* [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-17 0:50 ` Scott Wood
2015-02-18 17:43 ` Kumar Gala
2015-02-16 15:46 ` [RFC v2 02/10] fsl_qman: Add drivers for the Freescale DPAA QMan Emil Medve
` (9 subsequent siblings)
10 siblings, 2 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I075944acf740dbaae861104c17a9ff7247dec1be
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/Kconfig | 1 +
drivers/soc/Makefile | 1 +
drivers/soc/freescale/Kconfig | 51 ++
drivers/soc/freescale/Makefile | 7 +
drivers/soc/freescale/bman.c | 611 ++++++++++++++++++++
drivers/soc/freescale/bman.h | 524 +++++++++++++++++
drivers/soc/freescale/bman_api.c | 1033 ++++++++++++++++++++++++++++++++++
drivers/soc/freescale/bman_portal.c | 330 +++++++++++
drivers/soc/freescale/bman_priv.h | 149 +++++
drivers/soc/freescale/dpaa_alloc.c | 404 +++++++++++++
drivers/soc/freescale/dpaa_sys.h | 235 ++++++++
drivers/soc/freescale/qbman_driver.c | 41 ++
include/linux/fsl_bman.h | 511 +++++++++++++++++
13 files changed, 3898 insertions(+)
create mode 100644 drivers/soc/freescale/Kconfig
create mode 100644 drivers/soc/freescale/Makefile
create mode 100644 drivers/soc/freescale/bman.c
create mode 100644 drivers/soc/freescale/bman.h
create mode 100644 drivers/soc/freescale/bman_api.c
create mode 100644 drivers/soc/freescale/bman_portal.c
create mode 100644 drivers/soc/freescale/bman_priv.h
create mode 100644 drivers/soc/freescale/dpaa_alloc.c
create mode 100644 drivers/soc/freescale/dpaa_sys.h
create mode 100644 drivers/soc/freescale/qbman_driver.c
create mode 100644 include/linux/fsl_bman.h
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index 76d6bd4..6534d8b 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -1,5 +1,6 @@
menu "SOC (System On Chip) specific Drivers"
+source "drivers/soc/freescale/Kconfig"
source "drivers/soc/qcom/Kconfig"
source "drivers/soc/ti/Kconfig"
source "drivers/soc/versatile/Kconfig"
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index 063113d..a63cc17 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -2,6 +2,7 @@
# Makefile for the Linux Kernel SOC specific device drivers.
#
+obj-$(CONFIG_FSL_DPA) += freescale/
obj-$(CONFIG_ARCH_QCOM) += qcom/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_SOC_TI) += ti/
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
new file mode 100644
index 0000000..63bf002
--- /dev/null
+++ b/drivers/soc/freescale/Kconfig
@@ -0,0 +1,51 @@
+menuconfig FSL_DPA
+ tristate "Freescale DPAA Buffer management"
+ depends on HAS_FSL_QBMAN
+ default y
+
+if FSL_DPA
+
+config FSL_DPA_CHECKING
+ bool "additional driver checking"
+ default n
+ ---help---
+ Compiles in additional checks to sanity-check the drivers and any
+ use of it by other code. Not recommended for performance.
+
+config FSL_DPA_CAN_WAIT
+ bool
+ default y
+
+config FSL_DPA_CAN_WAIT_SYNC
+ bool
+ default y
+
+config FSL_DPA_PIRQ_FAST
+ bool
+ default y
+
+config FSL_DPA_PIRQ_SLOW
+ bool
+ default y
+
+config FSL_DPA_PORTAL_SHARE
+ bool
+ default y
+
+config FSL_BMAN
+ bool "Freescale Buffer Manager (BMan) support"
+ default y
+
+if FSL_BMAN
+
+config FSL_BMAN_CONFIG
+ bool "BMan device management"
+ default y
+ ---help---
+ If this linux image is running natively, you need this option. If this
+ linux image is running as a guest OS under the hypervisor, only one
+ guest OS ("the control plane") needs this option.
+
+endif # FSL_BMAN
+
+endif # FSL_DPA
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
new file mode 100644
index 0000000..3f452ee
--- /dev/null
+++ b/drivers/soc/freescale/Makefile
@@ -0,0 +1,7 @@
+# Common
+obj-$(CONFIG_FSL_DPA) += dpaa_alloc.o
+obj-$(CONFIG_HAS_FSL_QBMAN) += qbman_driver.o
+
+# Bman
+obj-$(CONFIG_FSL_BMAN) += bman_api.o
+obj-$(CONFIG_FSL_BMAN_CONFIG) += bman.o bman_portal.o
diff --git a/drivers/soc/freescale/bman.c b/drivers/soc/freescale/bman.c
new file mode 100644
index 0000000..fba6ae0
--- /dev/null
+++ b/drivers/soc/freescale/bman.c
@@ -0,0 +1,611 @@
+/* Copyright (c) 2009-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/cacheflush.h>
+#include "bman_priv.h"
+
+/* Last updated for v00.79 of the BG */
+
+struct bman;
+
+/* Register offsets */
+#define REG_POOL_SWDET(n) (0x0000 + ((n) * 0x04))
+#define REG_POOL_HWDET(n) (0x0100 + ((n) * 0x04))
+#define REG_POOL_SWDXT(n) (0x0200 + ((n) * 0x04))
+#define REG_POOL_HWDXT(n) (0x0300 + ((n) * 0x04))
+#define REG_POOL_CONTENT(n) (0x0600 + ((n) * 0x04))
+#define REG_FBPR_FPC 0x0800
+#define REG_ECSR 0x0a00
+#define REG_ECIR 0x0a04
+#define REG_EADR 0x0a08
+#define REG_EDATA(n) (0x0a10 + ((n) * 0x04))
+#define REG_SBEC(n) (0x0a80 + ((n) * 0x04))
+#define REG_IP_REV_1 0x0bf8
+#define REG_IP_REV_2 0x0bfc
+#define REG_FBPR_BARE 0x0c00
+#define REG_FBPR_BAR 0x0c04
+#define REG_FBPR_AR 0x0c10
+#define REG_SRCIDR 0x0d04
+#define REG_LIODNR 0x0d08
+#define REG_ERR_ISR 0x0e00 /* + "enum bm_isr_reg" */
+
+/* Used by all error interrupt registers except 'inhibit' */
+#define BM_EIRQ_IVCI 0x00000010 /* Invalid Command Verb */
+#define BM_EIRQ_FLWI 0x00000008 /* FBPR Low Watermark */
+#define BM_EIRQ_MBEI 0x00000004 /* Multi-bit ECC Error */
+#define BM_EIRQ_SBEI 0x00000002 /* Single-bit ECC Error */
+#define BM_EIRQ_BSCN 0x00000001 /* pool State Change Notification */
+
+/* BMAN_ECIR valid error bit */
+#define PORTAL_ECSR_ERR (BM_EIRQ_IVCI)
+
+union bman_ecir {
+ u32 ecir_raw;
+ struct {
+ u32 __reserved1:4;
+ u32 portal_num:4;
+ u32 __reserved2:12;
+ u32 numb:4;
+ u32 __reserved3:2;
+ u32 pid:6;
+ } __packed info;
+};
+
+union bman_eadr {
+ u32 eadr_raw;
+ struct {
+ u32 __reserved1:5;
+ u32 memid:3;
+ u32 __reserved2:14;
+ u32 eadr:10;
+ } __packed info;
+};
+
+struct bman_hwerr_txt {
+ u32 mask;
+ const char *txt;
+};
+
+#define BMAN_HWE_TXT(a, b) { .mask = BM_EIRQ_##a, .txt = b }
+
+static const struct bman_hwerr_txt bman_hwerr_txts[] = {
+ BMAN_HWE_TXT(IVCI, "Invalid Command Verb"),
+ BMAN_HWE_TXT(FLWI, "FBPR Low Watermark"),
+ BMAN_HWE_TXT(MBEI, "Multi-bit ECC Error"),
+ BMAN_HWE_TXT(SBEI, "Single-bit ECC Error"),
+ BMAN_HWE_TXT(BSCN, "Pool State Change Notification"),
+};
+#define BMAN_HWE_COUNT (sizeof(bman_hwerr_txts)/sizeof(struct bman_hwerr_txt))
+
+struct bman_error_info_mdata {
+ u16 addr_mask;
+ u16 bits;
+ const char *txt;
+};
+
+#define BMAN_ERR_MDATA(a, b, c) { .addr_mask = a, .bits = b, .txt = c}
+static const struct bman_error_info_mdata error_mdata[] = {
+ BMAN_ERR_MDATA(0x03FF, 192, "Stockpile memory"),
+ BMAN_ERR_MDATA(0x00FF, 256, "SW portal ring memory port 1"),
+ BMAN_ERR_MDATA(0x00FF, 256, "SW portal ring memory port 2"),
+};
+#define BMAN_ERR_MDATA_COUNT \
+ (sizeof(error_mdata)/sizeof(struct bman_error_info_mdata))
+
+/* Add this in Kconfig */
+#define BMAN_ERRS_TO_UNENABLE (BM_EIRQ_FLWI)
+
+/**
+ * bm_err_isr_<reg>_<verb> - Manipulate global interrupt registers
+ * @v: for accessors that write values, this is the 32-bit value
+ *
+ * Manipulates BMAN_ERR_ISR, BMAN_ERR_IER, BMAN_ERR_ISDR, BMAN_ERR_IIR. All
+ * manipulations except bm_err_isr_[un]inhibit() use 32-bit masks composed of
+ * the BM_EIRQ_*** definitions. Note that "bm_err_isr_enable_write" means
+ * "write the enable register" rather than "enable the write register"!
+ */
+#define bm_err_isr_status_read(bm) \
+ __bm_err_isr_read(bm, bm_isr_status)
+#define bm_err_isr_status_clear(bm, m) \
+ __bm_err_isr_write(bm, bm_isr_status, m)
+#define bm_err_isr_enable_read(bm) \
+ __bm_err_isr_read(bm, bm_isr_enable)
+#define bm_err_isr_enable_write(bm, v) \
+ __bm_err_isr_write(bm, bm_isr_enable, v)
+#define bm_err_isr_disable_read(bm) \
+ __bm_err_isr_read(bm, bm_isr_disable)
+#define bm_err_isr_disable_write(bm, v) \
+ __bm_err_isr_write(bm, bm_isr_disable, v)
+#define bm_err_isr_inhibit(bm) \
+ __bm_err_isr_write(bm, bm_isr_inhibit, 1)
+#define bm_err_isr_uninhibit(bm) \
+ __bm_err_isr_write(bm, bm_isr_inhibit, 0)
+
+/*
+ * TODO: unimplemented registers
+ *
+ * BMAN_POOLk_SDCNT, BMAN_POOLk_HDCNT, BMAN_FULT,
+ * BMAN_VLDPL, BMAN_EECC, BMAN_SBET, BMAN_EINJ
+ */
+
+/* Encapsulate "struct bman *" as a cast of the register space address. */
+
+static struct bman *bm_create(void *regs)
+{
+ return (struct bman *)regs;
+}
+
+static inline u32 __bm_in(struct bman *bm, u32 offset)
+{
+ return in_be32((void *)bm + offset);
+}
+static inline void __bm_out(struct bman *bm, u32 offset, u32 val)
+{
+ out_be32((void *)bm + offset, val);
+}
+#define bm_in(reg) __bm_in(bm, REG_##reg)
+#define bm_out(reg, val) __bm_out(bm, REG_##reg, val)
+
+static u32 __bm_err_isr_read(struct bman *bm, enum bm_isr_reg n)
+{
+ return __bm_in(bm, REG_ERR_ISR + (n << 2));
+}
+
+static void __bm_err_isr_write(struct bman *bm, enum bm_isr_reg n, u32 val)
+{
+ __bm_out(bm, REG_ERR_ISR + (n << 2), val);
+}
+
+static void bm_get_version(struct bman *bm, u16 *id, u8 *major, u8 *minor)
+{
+ u32 v = bm_in(IP_REV_1);
+ *id = (v >> 16);
+ *major = (v >> 8) & 0xff;
+ *minor = v & 0xff;
+}
+
+static u32 __generate_thresh(u32 val, int roundup)
+{
+ u32 e = 0; /* co-efficient, exponent */
+ int oddbit = 0;
+ while (val > 0xff) {
+ oddbit = val & 1;
+ val >>= 1;
+ e++;
+ if (roundup && oddbit)
+ val++;
+ }
+ DPA_ASSERT(e < 0x10);
+ return val | (e << 8);
+}
+
+static void bm_set_pool(struct bman *bm, u8 pool, u32 swdet, u32 swdxt,
+ u32 hwdet, u32 hwdxt)
+{
+ DPA_ASSERT(pool < bman_pool_max);
+ bm_out(POOL_SWDET(pool), __generate_thresh(swdet, 0));
+ bm_out(POOL_SWDXT(pool), __generate_thresh(swdxt, 1));
+ bm_out(POOL_HWDET(pool), __generate_thresh(hwdet, 0));
+ bm_out(POOL_HWDXT(pool), __generate_thresh(hwdxt, 1));
+}
+
+static void bm_set_memory(struct bman *bm, u64 ba, int prio, u32 size)
+{
+ u32 exp = ilog2(size);
+ /* choke if size isn't within range */
+ DPA_ASSERT((size >= 4096) && (size <= 1073741824) &&
+ is_power_of_2(size));
+ /* choke if '[e]ba' has lower-alignment than 'size' */
+ DPA_ASSERT(!(ba & (size - 1)));
+ bm_out(FBPR_BARE, upper_32_bits(ba));
+ bm_out(FBPR_BAR, lower_32_bits(ba));
+ bm_out(FBPR_AR, (prio ? 0x40000000 : 0) | (exp - 1));
+}
+
+/*****************/
+/* Config driver */
+/*****************/
+
+/* We support only one of these. */
+static struct bman *bm;
+static struct device_node *bm_node;
+
+/* And this state belongs to 'bm'. It is set during fsl_bman_init(), but used
+ * during bman_init_ccsr(). */
+static dma_addr_t fbpr_a;
+static size_t fbpr_sz;
+
+static int bman_fbpr(struct reserved_mem *rmem)
+{
+ fbpr_a = rmem->base;
+ fbpr_sz = rmem->size;
+
+ WARN_ON(!(fbpr_a && fbpr_sz));
+
+ return 0;
+}
+RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr);
+
+static int __init fsl_bman_init(struct device_node *node)
+{
+ struct resource res;
+ u32 __iomem *regs;
+ int ret;
+ u16 id;
+ u8 major, minor;
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret) {
+ pr_err("Can't get %s property 'reg'\n",
+ node->full_name);
+ return ret;
+ }
+
+ /* Global configuration */
+ regs = ioremap(res.start, res.end - res.start + 1);
+ bm = bm_create(regs);
+ BUG_ON(!bm);
+ bm_node = node;
+ bm_get_version(bm, &id, &major, &minor);
+ pr_info("Bman ver:%04x,%02x,%02x\n", id, major, minor);
+ if ((major == 1) && (minor == 0)) {
+ bman_ip_rev = BMAN_REV10;
+ bman_pool_max = 64;
+ } else if ((major == 2) && (minor == 0)) {
+ bman_ip_rev = BMAN_REV20;
+ bman_pool_max = 8;
+ } else if ((major == 2) && (minor == 1)) {
+ bman_ip_rev = BMAN_REV21;
+ bman_pool_max = 64;
+ } else {
+ pr_warn("unknown Bman version, default to rev1.0\n");
+ }
+
+ return 0;
+}
+
+int bman_have_ccsr(void)
+{
+ return bm ? 1 : 0;
+}
+
+int bm_pool_set(u32 bpid, const u32 *thresholds)
+{
+ if (!bm)
+ return -ENODEV;
+ bm_set_pool(bm, bpid, thresholds[0], thresholds[1],
+ thresholds[2], thresholds[3]);
+ return 0;
+}
+EXPORT_SYMBOL(bm_pool_set);
+
+__init void bman_init_early(void)
+{
+ struct device_node *dn;
+ int ret;
+
+ for_each_compatible_node(dn, NULL, "fsl,bman") {
+ if (bm)
+ pr_err("%s: only one 'fsl,bman' allowed\n",
+ dn->full_name);
+ else {
+ if (!of_device_is_available(dn))
+ continue;
+
+ ret = fsl_bman_init(dn);
+ BUG_ON(ret);
+ }
+ }
+}
+
+static void log_edata_bits(u32 bit_count)
+{
+ u32 i, j, mask = 0xffffffff;
+
+ pr_warn("Bman ErrInt, EDATA:\n");
+ i = bit_count/32;
+ if (bit_count%32) {
+ i++;
+ mask = ~(mask << bit_count%32);
+ }
+ j = 16-i;
+ pr_warn(" 0x%08x\n", bm_in(EDATA(j)) & mask);
+ j++;
+ for (; j < 16; j++)
+ pr_warn(" 0x%08x\n", bm_in(EDATA(j)));
+}
+
+static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
+{
+ union bman_ecir ecir_val;
+ union bman_eadr eadr_val;
+
+ ecir_val.ecir_raw = bm_in(ECIR);
+ /* Is portal info valid */
+ if (ecsr_val & PORTAL_ECSR_ERR) {
+ pr_warn("Bman ErrInt: SWP id %d, numb %d, pid %d\n",
+ ecir_val.info.portal_num, ecir_val.info.numb,
+ ecir_val.info.pid);
+ }
+ if (ecsr_val & (BM_EIRQ_SBEI|BM_EIRQ_MBEI)) {
+ eadr_val.eadr_raw = bm_in(EADR);
+ pr_warn("Bman ErrInt: EADR Memory: %s, 0x%x\n",
+ error_mdata[eadr_val.info.memid].txt,
+ error_mdata[eadr_val.info.memid].addr_mask
+ & eadr_val.info.eadr);
+ log_edata_bits(error_mdata[eadr_val.info.memid].bits);
+ }
+}
+
+/* Bman interrupt handler */
+static irqreturn_t bman_isr(int irq, void *ptr)
+{
+ u32 isr_val, ier_val, ecsr_val, isr_mask, i;
+
+ ier_val = bm_err_isr_enable_read(bm);
+ isr_val = bm_err_isr_status_read(bm);
+ ecsr_val = bm_in(ECSR);
+ isr_mask = isr_val & ier_val;
+
+ if (!isr_mask)
+ return IRQ_NONE;
+ for (i = 0; i < BMAN_HWE_COUNT; i++) {
+ if (bman_hwerr_txts[i].mask & isr_mask) {
+ pr_warn("Bman ErrInt: %s\n", bman_hwerr_txts[i].txt);
+ if (bman_hwerr_txts[i].mask & ecsr_val) {
+ log_additional_error_info(isr_mask, ecsr_val);
+ /* Re-arm error capture registers */
+ bm_out(ECSR, ecsr_val);
+ }
+ if (bman_hwerr_txts[i].mask & BMAN_ERRS_TO_UNENABLE) {
+ pr_devel("Bman un-enabling error 0x%x\n",
+ bman_hwerr_txts[i].mask);
+ ier_val &= ~bman_hwerr_txts[i].mask;
+ bm_err_isr_enable_write(bm, ier_val);
+ }
+ }
+ }
+ bm_err_isr_status_clear(bm, isr_val);
+ return IRQ_HANDLED;
+}
+
+static int __bind_irq(void)
+{
+ int ret, err_irq;
+
+ err_irq = of_irq_to_resource(bm_node, 0, NULL);
+ if (err_irq == NO_IRQ) {
+ pr_info("Can't get %s property '%s'\n", bm_node->full_name,
+ "interrupts");
+ return -ENODEV;
+ }
+ ret = request_irq(err_irq, bman_isr, IRQF_SHARED, "bman-err", bm_node);
+ if (ret) {
+ pr_err("request_irq() failed %d for '%s'\n", ret,
+ bm_node->full_name);
+ return -ENODEV;
+ }
+ /* Disable Buffer Pool State Change */
+ bm_err_isr_disable_write(bm, BM_EIRQ_BSCN);
+ /* Write-to-clear any stale bits, (eg. starvation being asserted prior
+ * to resource allocation during driver init). */
+ bm_err_isr_status_clear(bm, 0xffffffff);
+ /* Enable Error Interrupts */
+ bm_err_isr_enable_write(bm, 0xffffffff);
+ return 0;
+}
+
+int bman_init_ccsr(struct device_node *node)
+{
+ int ret;
+ if (!bman_have_ccsr())
+ return 0;
+ if (node != bm_node)
+ return -EINVAL;
+ /* FBPR memory */
+ bm_set_memory(bm, fbpr_a, 0, fbpr_sz);
+ ret = __bind_irq();
+ if (ret)
+ return ret;
+ return 0;
+}
+
+u32 bm_pool_free_buffers(u32 bpid)
+{
+ return bm_in(POOL_CONTENT(bpid));
+}
+
+#ifdef CONFIG_SYSFS
+
+#define DRV_NAME "fsl-bman"
+
+static ssize_t show_fbpr_fpc(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", bm_in(FBPR_FPC));
+};
+
+static ssize_t show_pool_count(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ u32 data;
+ int i;
+
+ if (!sscanf(dev_attr->attr.name, "%d", &i))
+ return -EINVAL;
+ data = bm_in(POOL_CONTENT(i));
+ return snprintf(buf, PAGE_SIZE, "%d\n", data);
+};
+
+static ssize_t show_err_isr(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", bm_in(ERR_ISR));
+};
+
+static ssize_t show_sbec(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ int i;
+
+ if (!sscanf(dev_attr->attr.name, "sbec_%d", &i))
+ return -EINVAL;
+ return snprintf(buf, PAGE_SIZE, "%u\n", bm_in(SBEC(i)));
+};
+
+static DEVICE_ATTR(err_isr, S_IRUSR, show_err_isr, NULL);
+static DEVICE_ATTR(fbpr_fpc, S_IRUSR, show_fbpr_fpc, NULL);
+
+/* Didn't use DEVICE_ATTR as 64 of this would be required.
+ * Initialize them when needed. */
+static char *name_attrs_pool_count; /* "xx" + null-terminator */
+static struct device_attribute *dev_attr_buffer_pool_count;
+
+static DEVICE_ATTR(sbec_0, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_1, S_IRUSR, show_sbec, NULL);
+
+static struct attribute *bman_dev_attributes[] = {
+ &dev_attr_fbpr_fpc.attr,
+ &dev_attr_err_isr.attr,
+ NULL
+};
+
+static struct attribute *bman_dev_ecr_attributes[] = {
+ &dev_attr_sbec_0.attr,
+ &dev_attr_sbec_1.attr,
+ NULL
+};
+
+static struct attribute **bman_dev_pool_count_attributes;
+
+/* root level */
+static const struct attribute_group bman_dev_attr_grp = {
+ .name = NULL,
+ .attrs = bman_dev_attributes
+};
+static const struct attribute_group bman_dev_ecr_grp = {
+ .name = "error_capture",
+ .attrs = bman_dev_ecr_attributes
+};
+static struct attribute_group bman_dev_pool_countent_grp = {
+ .name = "pool_count",
+};
+
+static int of_fsl_bman_remove(struct platform_device *ofdev)
+{
+ sysfs_remove_group(&ofdev->dev.kobj, &bman_dev_attr_grp);
+ return 0;
+};
+
+static int of_fsl_bman_probe(struct platform_device *ofdev)
+{
+ int ret, i;
+ struct device *dev = &ofdev->dev;
+
+ ret = sysfs_create_group(&dev->kobj, &bman_dev_attr_grp);
+ if (ret)
+ goto done;
+ ret = sysfs_create_group(&dev->kobj, &bman_dev_ecr_grp);
+ if (ret)
+ goto del_group_0;
+
+ name_attrs_pool_count = devm_kmalloc(dev,
+ sizeof(char) * bman_pool_max * 3, GFP_KERNEL);
+ if (!name_attrs_pool_count) {
+ dev_err(dev, "Can't alloc name_attrs_pool_count\n");
+ goto del_group_1;
+ }
+
+ dev_attr_buffer_pool_count = devm_kmalloc(dev,
+ sizeof(struct device_attribute) * bman_pool_max, GFP_KERNEL);
+ if (!dev_attr_buffer_pool_count) {
+ dev_err(dev, "Can't alloc dev_attr_buffer_pool_count\n");
+ goto del_group_1;
+ }
+
+ bman_dev_pool_count_attributes = devm_kmalloc(dev,
+ sizeof(struct attribute *) * (bman_pool_max + 1), GFP_KERNEL);
+ if (!bman_dev_pool_count_attributes) {
+ dev_err(dev, "Can't alloc bman_dev_pool_count_attributes\n");
+ goto del_group_1;
+ }
+
+ for (i = 0; i < bman_pool_max; i++) {
+ ret = scnprintf((name_attrs_pool_count + i * 3), 3, "%d", i);
+ if (!ret)
+ goto del_group_1;
+ dev_attr_buffer_pool_count[i].attr.name =
+ (name_attrs_pool_count + i * 3);
+ dev_attr_buffer_pool_count[i].attr.mode = S_IRUSR;
+ dev_attr_buffer_pool_count[i].show = show_pool_count;
+ bman_dev_pool_count_attributes[i] =
+ &dev_attr_buffer_pool_count[i].attr;
+ }
+ bman_dev_pool_count_attributes[bman_pool_max] = NULL;
+
+ bman_dev_pool_countent_grp.attrs = bman_dev_pool_count_attributes;
+
+ ret = sysfs_create_group(&dev->kobj, &bman_dev_pool_countent_grp);
+ if (ret)
+ goto del_group_1;
+
+ goto done;
+
+del_group_1:
+ sysfs_remove_group(&dev->kobj, &bman_dev_ecr_grp);
+del_group_0:
+ sysfs_remove_group(&dev->kobj, &bman_dev_attr_grp);
+done:
+ if (ret)
+ dev_err(dev, "Cannot create dev attributes ret=%d\n", ret);
+ return ret;
+};
+
+static const struct of_device_id of_fsl_bman_ids[] = {
+ {
+ .compatible = "fsl,bman",
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, of_fsl_bman_ids);
+
+static struct platform_driver of_fsl_bman_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_fsl_bman_ids,
+ },
+ .probe = of_fsl_bman_probe,
+ .remove = of_fsl_bman_remove,
+};
+
+module_platform_driver(of_fsl_bman_driver);
+
+#endif /* CONFIG_SYSFS */
diff --git a/drivers/soc/freescale/bman.h b/drivers/soc/freescale/bman.h
new file mode 100644
index 0000000..126ef61
--- /dev/null
+++ b/drivers/soc/freescale/bman.h
@@ -0,0 +1,524 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman_priv.h"
+
+/***************************/
+/* Portal register assists */
+/***************************/
+
+/* Cache-inhibited register offsets */
+#define BM_REG_RCR_PI_CINH 0x0000
+#define BM_REG_RCR_CI_CINH 0x0004
+#define BM_REG_RCR_ITR 0x0008
+#define BM_REG_CFG 0x0100
+#define BM_REG_SCN(n) (0x0200 + ((n) << 2))
+#define BM_REG_ISR 0x0e00
+#define BM_REG_IIR 0x0e0c
+
+/* Cache-enabled register offsets */
+#define BM_CL_CR 0x0000
+#define BM_CL_RR0 0x0100
+#define BM_CL_RR1 0x0140
+#define BM_CL_RCR 0x1000
+#define BM_CL_RCR_PI_CENA 0x3000
+#define BM_CL_RCR_CI_CENA 0x3100
+
+/* BTW, the drivers (and h/w programming model) already obtain the required
+ * synchronisation for portal accesses via lwsync(), hwsync(), and
+ * data-dependencies. Use of barrier()s or other order-preserving primitives
+ * simply degrade performance. Hence the use of the __raw_*() interfaces, which
+ * simply ensure that the compiler treats the portal registers as volatile (ie.
+ * non-coherent). */
+
+/* Cache-inhibited register access. */
+#define __bm_in(bm, o) __raw_readl((bm)->addr_ci + (o))
+#define __bm_out(bm, o, val) __raw_writel((val), (bm)->addr_ci + (o))
+#define bm_in(reg) __bm_in(&portal->addr, BM_REG_##reg)
+#define bm_out(reg, val) __bm_out(&portal->addr, BM_REG_##reg, val)
+
+/* Cache-enabled (index) register access */
+#define __bm_cl_touch_ro(bm, o) dcbt_ro((bm)->addr_ce + (o))
+#define __bm_cl_touch_rw(bm, o) dcbt_rw((bm)->addr_ce + (o))
+#define __bm_cl_in(bm, o) __raw_readl((bm)->addr_ce + (o))
+#define __bm_cl_out(bm, o, val) \
+ do { \
+ u32 *__tmpclout = (bm)->addr_ce + (o); \
+ __raw_writel((val), __tmpclout); \
+ dcbf(__tmpclout); \
+ } while (0)
+#define __bm_cl_invalidate(bm, o) dcbi((bm)->addr_ce + (o))
+#define bm_cl_touch_ro(reg) __bm_cl_touch_ro(&portal->addr, BM_CL_##reg##_CENA)
+#define bm_cl_touch_rw(reg) __bm_cl_touch_rw(&portal->addr, BM_CL_##reg##_CENA)
+#define bm_cl_in(reg) __bm_cl_in(&portal->addr, BM_CL_##reg##_CENA)
+#define bm_cl_out(reg, val) __bm_cl_out(&portal->addr, BM_CL_##reg##_CENA, val)
+#define bm_cl_invalidate(reg)\
+ __bm_cl_invalidate(&portal->addr, BM_CL_##reg##_CENA)
+
+/* Cyclic helper for rings. FIXME: once we are able to do fine-grain perf
+ * analysis, look at using the "extra" bit in the ring index registers to avoid
+ * cyclic issues. */
+static inline u8 bm_cyc_diff(u8 ringsize, u8 first, u8 last)
+{
+ /* 'first' is included, 'last' is excluded */
+ if (first <= last)
+ return last - first;
+ return ringsize + last - first;
+}
+
+/* Portal modes.
+ * Enum types;
+ * pmode == production mode
+ * cmode == consumption mode,
+ * Enum values use 3 letter codes. First letter matches the portal mode,
+ * remaining two letters indicate;
+ * ci == cache-inhibited portal register
+ * ce == cache-enabled portal register
+ * vb == in-band valid-bit (cache-enabled)
+ */
+enum bm_rcr_pmode { /* matches BCSP_CFG::RPM */
+ bm_rcr_pci = 0, /* PI index, cache-inhibited */
+ bm_rcr_pce = 1, /* PI index, cache-enabled */
+ bm_rcr_pvb = 2 /* valid-bit */
+};
+enum bm_rcr_cmode { /* s/w-only */
+ bm_rcr_cci, /* CI index, cache-inhibited */
+ bm_rcr_cce /* CI index, cache-enabled */
+};
+
+
+/* ------------------------- */
+/* --- Portal structures --- */
+
+#define BM_RCR_SIZE 8
+
+struct bm_rcr {
+ struct bm_rcr_entry *ring, *cursor;
+ u8 ci, available, ithresh, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ u32 busy;
+ enum bm_rcr_pmode pmode;
+ enum bm_rcr_cmode cmode;
+#endif
+};
+
+struct bm_mc {
+ struct bm_mc_command *cr;
+ struct bm_mc_result *rr;
+ u8 rridx, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ enum {
+ /* Can only be _mc_start()ed */
+ mc_idle,
+ /* Can only be _mc_commit()ed or _mc_abort()ed */
+ mc_user,
+ /* Can only be _mc_retry()ed */
+ mc_hw
+ } state;
+#endif
+};
+
+struct bm_addr {
+ void __iomem *addr_ce; /* cache-enabled */
+ void __iomem *addr_ci; /* cache-inhibited */
+};
+
+struct bm_portal {
+ struct bm_addr addr;
+ struct bm_rcr rcr;
+ struct bm_mc mc;
+ struct bm_portal_config config;
+} ____cacheline_aligned;
+
+
+/* --------------- */
+/* --- RCR API --- */
+
+/* Bit-wise logic to wrap a ring pointer by clearing the "carry bit" */
+#define RCR_CARRYCLEAR(p) \
+ (void *)((unsigned long)(p) & (~(unsigned long)(BM_RCR_SIZE << 6)))
+
+/* Bit-wise logic to convert a ring pointer to a ring index */
+static inline u8 RCR_PTR2IDX(struct bm_rcr_entry *e)
+{
+ return ((uintptr_t)e >> 6) & (BM_RCR_SIZE - 1);
+}
+
+/* Increment the 'cursor' ring pointer, taking 'vbit' into account */
+static inline void RCR_INC(struct bm_rcr *rcr)
+{
+ /* NB: this is odd-looking, but experiments show that it generates
+ * fast code with essentially no branching overheads. We increment to
+ * the next RCR pointer and handle overflow and 'vbit'. */
+ struct bm_rcr_entry *partial = rcr->cursor + 1;
+ rcr->cursor = RCR_CARRYCLEAR(partial);
+ if (partial != rcr->cursor)
+ rcr->vbit ^= BM_RCR_VERB_VBIT;
+}
+
+static inline int bm_rcr_init(struct bm_portal *portal, enum bm_rcr_pmode pmode,
+ __maybe_unused enum bm_rcr_cmode cmode)
+{
+ /* This use of 'register', as well as all other occurrences, is because
+ * it has been observed to generate much faster code with gcc than is
+ * otherwise the case. */
+ register struct bm_rcr *rcr = &portal->rcr;
+ u32 cfg;
+ u8 pi;
+
+ rcr->ring = portal->addr.addr_ce + BM_CL_RCR;
+ rcr->ci = bm_in(RCR_CI_CINH) & (BM_RCR_SIZE - 1);
+ pi = bm_in(RCR_PI_CINH) & (BM_RCR_SIZE - 1);
+ rcr->cursor = rcr->ring + pi;
+ rcr->vbit = (bm_in(RCR_PI_CINH) & BM_RCR_SIZE) ? BM_RCR_VERB_VBIT : 0;
+ rcr->available = BM_RCR_SIZE - 1
+ - bm_cyc_diff(BM_RCR_SIZE, rcr->ci, pi);
+ rcr->ithresh = bm_in(RCR_ITR);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 0;
+ rcr->pmode = pmode;
+ rcr->cmode = cmode;
+#endif
+ cfg = (bm_in(CFG) & 0xffffffe0) | (pmode & 0x3); /* BCSP_CFG::RPM */
+ bm_out(CFG, cfg);
+ return 0;
+}
+
+static inline void bm_rcr_finish(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ u8 pi = bm_in(RCR_PI_CINH) & (BM_RCR_SIZE - 1);
+ u8 ci = bm_in(RCR_CI_CINH) & (BM_RCR_SIZE - 1);
+ DPA_ASSERT(!rcr->busy);
+ if (pi != RCR_PTR2IDX(rcr->cursor))
+ pr_crit("losing uncommited RCR entries\n");
+ if (ci != rcr->ci)
+ pr_crit("missing existing RCR completions\n");
+ if (rcr->ci != RCR_PTR2IDX(rcr->cursor))
+ pr_crit("RCR destroyed unquiesced\n");
+}
+
+static inline struct bm_rcr_entry *bm_rcr_start(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(!rcr->busy);
+ if (!rcr->available)
+ return NULL;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 1;
+#endif
+ dcbz_64(rcr->cursor);
+ return rcr->cursor;
+}
+
+static inline void bm_rcr_abort(struct bm_portal *portal)
+{
+ __maybe_unused register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->busy);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 0;
+#endif
+}
+
+static inline struct bm_rcr_entry *bm_rcr_pend_and_next(
+ struct bm_portal *portal, u8 myverb)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->busy);
+ DPA_ASSERT(rcr->pmode != bm_rcr_pvb);
+ if (rcr->available == 1)
+ return NULL;
+ rcr->cursor->__dont_write_directly__verb = myverb | rcr->vbit;
+ dcbf_64(rcr->cursor);
+ RCR_INC(rcr);
+ rcr->available--;
+ dcbz_64(rcr->cursor);
+ return rcr->cursor;
+}
+
+static inline void bm_rcr_pci_commit(struct bm_portal *portal, u8 myverb)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->busy);
+ DPA_ASSERT(rcr->pmode == bm_rcr_pci);
+ rcr->cursor->__dont_write_directly__verb = myverb | rcr->vbit;
+ RCR_INC(rcr);
+ rcr->available--;
+ hwsync();
+ bm_out(RCR_PI_CINH, RCR_PTR2IDX(rcr->cursor));
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 0;
+#endif
+}
+
+static inline void bm_rcr_pce_prefetch(struct bm_portal *portal)
+{
+ __maybe_unused register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->pmode == bm_rcr_pce);
+ bm_cl_invalidate(RCR_PI);
+ bm_cl_touch_rw(RCR_PI);
+}
+
+static inline void bm_rcr_pce_commit(struct bm_portal *portal, u8 myverb)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->busy);
+ DPA_ASSERT(rcr->pmode == bm_rcr_pce);
+ rcr->cursor->__dont_write_directly__verb = myverb | rcr->vbit;
+ RCR_INC(rcr);
+ rcr->available--;
+ lwsync();
+ bm_cl_out(RCR_PI, RCR_PTR2IDX(rcr->cursor));
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 0;
+#endif
+}
+
+static inline void bm_rcr_pvb_commit(struct bm_portal *portal, u8 myverb)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ struct bm_rcr_entry *rcursor;
+ DPA_ASSERT(rcr->busy);
+ DPA_ASSERT(rcr->pmode == bm_rcr_pvb);
+ lwsync();
+ rcursor = rcr->cursor;
+ rcursor->__dont_write_directly__verb = myverb | rcr->vbit;
+ dcbf_64(rcursor);
+ RCR_INC(rcr);
+ rcr->available--;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ rcr->busy = 0;
+#endif
+}
+
+static inline u8 bm_rcr_cci_update(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ u8 diff, old_ci = rcr->ci;
+ DPA_ASSERT(rcr->cmode == bm_rcr_cci);
+ rcr->ci = bm_in(RCR_CI_CINH) & (BM_RCR_SIZE - 1);
+ diff = bm_cyc_diff(BM_RCR_SIZE, old_ci, rcr->ci);
+ rcr->available += diff;
+ return diff;
+}
+
+static inline void bm_rcr_cce_prefetch(struct bm_portal *portal)
+{
+ __maybe_unused register struct bm_rcr *rcr = &portal->rcr;
+ DPA_ASSERT(rcr->cmode == bm_rcr_cce);
+ bm_cl_touch_ro(RCR_CI);
+}
+
+static inline u8 bm_rcr_cce_update(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ u8 diff, old_ci = rcr->ci;
+ DPA_ASSERT(rcr->cmode == bm_rcr_cce);
+ rcr->ci = bm_cl_in(RCR_CI) & (BM_RCR_SIZE - 1);
+ bm_cl_invalidate(RCR_CI);
+ diff = bm_cyc_diff(BM_RCR_SIZE, old_ci, rcr->ci);
+ rcr->available += diff;
+ return diff;
+}
+
+static inline u8 bm_rcr_get_ithresh(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ return rcr->ithresh;
+}
+
+static inline void bm_rcr_set_ithresh(struct bm_portal *portal, u8 ithresh)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ rcr->ithresh = ithresh;
+ bm_out(RCR_ITR, ithresh);
+}
+
+static inline u8 bm_rcr_get_avail(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ return rcr->available;
+}
+
+static inline u8 bm_rcr_get_fill(struct bm_portal *portal)
+{
+ register struct bm_rcr *rcr = &portal->rcr;
+ return BM_RCR_SIZE - 1 - rcr->available;
+}
+
+
+/* ------------------------------ */
+/* --- Management command API --- */
+
+static inline int bm_mc_init(struct bm_portal *portal)
+{
+ register struct bm_mc *mc = &portal->mc;
+ mc->cr = portal->addr.addr_ce + BM_CL_CR;
+ mc->rr = portal->addr.addr_ce + BM_CL_RR0;
+ mc->rridx = (__raw_readb(&mc->cr->__dont_write_directly__verb) &
+ BM_MCC_VERB_VBIT) ? 0 : 1;
+ mc->vbit = mc->rridx ? BM_MCC_VERB_VBIT : 0;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = mc_idle;
+#endif
+ return 0;
+}
+
+static inline void bm_mc_finish(struct bm_portal *portal)
+{
+ __maybe_unused register struct bm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == mc_idle);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (mc->state != mc_idle)
+ pr_crit("Losing incomplete MC command\n");
+#endif
+}
+
+static inline struct bm_mc_command *bm_mc_start(struct bm_portal *portal)
+{
+ register struct bm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == mc_idle);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = mc_user;
+#endif
+ dcbz_64(mc->cr);
+ return mc->cr;
+}
+
+static inline void bm_mc_abort(struct bm_portal *portal)
+{
+ __maybe_unused register struct bm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == mc_user);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = mc_idle;
+#endif
+}
+
+static inline void bm_mc_commit(struct bm_portal *portal, u8 myverb)
+{
+ register struct bm_mc *mc = &portal->mc;
+ struct bm_mc_result *rr = mc->rr + mc->rridx;
+ DPA_ASSERT(mc->state == mc_user);
+ lwsync();
+ mc->cr->__dont_write_directly__verb = myverb | mc->vbit;
+ dcbf(mc->cr);
+ dcbit_ro(rr);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = mc_hw;
+#endif
+}
+
+static inline struct bm_mc_result *bm_mc_result(struct bm_portal *portal)
+{
+ register struct bm_mc *mc = &portal->mc;
+ struct bm_mc_result *rr = mc->rr + mc->rridx;
+ DPA_ASSERT(mc->state == mc_hw);
+ /* The inactive response register's verb byte always returns zero until
+ * its command is submitted and completed. This includes the valid-bit,
+ * in case you were wondering... */
+ if (!__raw_readb(&rr->verb)) {
+ dcbit_ro(rr);
+ return NULL;
+ }
+ mc->rridx ^= 1;
+ mc->vbit ^= BM_MCC_VERB_VBIT;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = mc_idle;
+#endif
+ return rr;
+}
+
+
+/* ------------------------------------- */
+/* --- Portal interrupt register API --- */
+
+static inline int bm_isr_init(__always_unused struct bm_portal *portal)
+{
+ return 0;
+}
+
+static inline void bm_isr_finish(__always_unused struct bm_portal *portal)
+{
+}
+
+#define SCN_REG(bpid) BM_REG_SCN((bpid) / 32)
+#define SCN_BIT(bpid) (0x80000000 >> (bpid & 31))
+static inline void bm_isr_bscn_mask(struct bm_portal *portal, u8 bpid,
+ int enable)
+{
+ u32 val;
+ DPA_ASSERT(bpid < bman_pool_max);
+ /* REG_SCN for bpid=0..31, REG_SCN+4 for bpid=32..63 */
+ val = __bm_in(&portal->addr, SCN_REG(bpid));
+ if (enable)
+ val |= SCN_BIT(bpid);
+ else
+ val &= ~SCN_BIT(bpid);
+ __bm_out(&portal->addr, SCN_REG(bpid), val);
+}
+
+static inline u32 __bm_isr_read(struct bm_portal *portal, enum bm_isr_reg n)
+{
+ return __bm_in(&portal->addr, BM_REG_ISR + (n << 2));
+}
+
+static inline void __bm_isr_write(struct bm_portal *portal, enum bm_isr_reg n,
+ u32 val)
+{
+ __bm_out(&portal->addr, BM_REG_ISR + (n << 2), val);
+}
+
+/* Buffer Pool Cleanup */
+static inline int bm_shutdown_pool(struct bm_portal *p, u32 bpid)
+{
+ struct bm_mc_command *bm_cmd;
+ struct bm_mc_result *bm_res;
+
+ int aq_count = 0;
+ bool stop = false;
+ while (!stop) {
+ /* Acquire buffers until empty */
+ bm_cmd = bm_mc_start(p);
+ bm_cmd->acquire.bpid = bpid;
+ bm_mc_commit(p, BM_MCC_VERB_CMD_ACQUIRE | 1);
+ while (!(bm_res = bm_mc_result(p)))
+ cpu_relax();
+ if (!(bm_res->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT)) {
+ /* Pool is empty */
+ /* TBD : Should we do a few extra iterations in
+ case some other some blocks keep buffers 'on deck',
+ which may also be problematic */
+ stop = true;
+ } else
+ ++aq_count;
+ }
+ return 0;
+}
diff --git a/drivers/soc/freescale/bman_api.c b/drivers/soc/freescale/bman_api.c
new file mode 100644
index 0000000..cc15e28
--- /dev/null
+++ b/drivers/soc/freescale/bman_api.c
@@ -0,0 +1,1033 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman.h"
+
+/* Compilation constants */
+#define RCR_THRESH 2 /* reread h/w CI when running out of space */
+#define IRQNAME "BMan portal %d"
+#define MAX_IRQNAME 16 /* big enough for "BMan portal %d" */
+
+struct bman_portal {
+ struct bm_portal p;
+ /* 2-element array. pools[0] is mask, pools[1] is snapshot. */
+ struct bman_depletion *pools;
+ int thresh_set;
+ unsigned long irq_sources;
+ u32 slowpoll; /* only used when interrupts are off */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ struct bman_pool *rcri_owned; /* only 1 release WAIT_SYNC at a time */
+#endif
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ raw_spinlock_t sharing_lock; /* only used if is_shared */
+ int is_shared;
+ struct bman_portal *sharing_redirect;
+#endif
+ /* When the cpu-affine portal is activated, this is non-NULL */
+ const struct bm_portal_config *config;
+ /* 64-entry hash-table of pool objects that are tracking depletion
+ * entry/exit (ie. BMAN_POOL_FLAG_DEPLETION). This isn't fast-path, so
+ * we're not fussy about cache-misses and so forth - whereas the above
+ * members should all fit in one cacheline.
+ * BTW, with 64 entries in the hash table and 64 buffer pools to track,
+ * you'll never guess the hash-function ... */
+ struct bman_pool *cb[64];
+ char irqname[MAX_IRQNAME];
+ /* Track if the portal was alloced by the driver */
+ u8 alloced;
+};
+
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+#define PORTAL_IRQ_LOCK(p, irqflags) \
+ do { \
+ if ((p)->is_shared) \
+ raw_spin_lock_irqsave(&(p)->sharing_lock, irqflags); \
+ else \
+ local_irq_save(irqflags); \
+ } while (0)
+#define PORTAL_IRQ_UNLOCK(p, irqflags) \
+ do { \
+ if ((p)->is_shared) \
+ raw_spin_unlock_irqrestore(&(p)->sharing_lock, \
+ irqflags); \
+ else \
+ local_irq_restore(irqflags); \
+ } while (0)
+#else
+#define PORTAL_IRQ_LOCK(p, irqflags) local_irq_save(irqflags)
+#define PORTAL_IRQ_UNLOCK(p, irqflags) local_irq_restore(irqflags)
+#endif
+
+static cpumask_t affine_mask;
+static DEFINE_SPINLOCK(affine_mask_lock);
+static DEFINE_PER_CPU(struct bman_portal, bman_affine_portal);
+static inline struct bman_portal *get_raw_affine_portal(void)
+{
+ return &get_cpu_var(bman_affine_portal);
+}
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+static inline struct bman_portal *get_affine_portal(void)
+{
+ struct bman_portal *p = get_raw_affine_portal();
+ if (p->sharing_redirect)
+ return p->sharing_redirect;
+ return p;
+}
+#else
+#define get_affine_portal() get_raw_affine_portal()
+#endif
+static inline void put_affine_portal(void)
+{
+ put_cpu_var(bman_affine_portal);
+}
+static inline struct bman_portal *get_poll_portal(void)
+{
+ return this_cpu_ptr(&bman_affine_portal);
+}
+#define put_poll_portal()
+
+/* GOTCHA: this object type refers to a pool, it isn't *the* pool. There may be
+ * more than one such object per Bman buffer pool, eg. if different users of the
+ * pool are operating via different portals. */
+struct bman_pool {
+ struct bman_pool_params params;
+ /* Used for hash-table admin when using depletion notifications. */
+ struct bman_portal *portal;
+ struct bman_pool *next;
+ /* stockpile state - NULL unless BMAN_POOL_FLAG_STOCKPILE is set */
+ struct bm_buffer *sp;
+ unsigned int sp_fill;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ atomic_t in_use;
+#endif
+};
+
+/* (De)Registration of depletion notification callbacks */
+static void depletion_link(struct bman_portal *portal, struct bman_pool *pool)
+{
+ __maybe_unused unsigned long irqflags;
+ pool->portal = portal;
+ PORTAL_IRQ_LOCK(portal, irqflags);
+ pool->next = portal->cb[pool->params.bpid];
+ portal->cb[pool->params.bpid] = pool;
+ if (!pool->next)
+ /* First object for that bpid on this portal, enable the BSCN
+ * mask bit. */
+ bm_isr_bscn_mask(&portal->p, pool->params.bpid, 1);
+ PORTAL_IRQ_UNLOCK(portal, irqflags);
+}
+static void depletion_unlink(struct bman_pool *pool)
+{
+ struct bman_pool *it, *last = NULL;
+ struct bman_pool **base = &pool->portal->cb[pool->params.bpid];
+ __maybe_unused unsigned long irqflags;
+ PORTAL_IRQ_LOCK(pool->portal, irqflags);
+ it = *base; /* <-- gotcha, don't do this prior to the irq_save */
+ while (it != pool) {
+ last = it;
+ it = it->next;
+ }
+ if (!last)
+ *base = pool->next;
+ else
+ last->next = pool->next;
+ if (!last && !pool->next) {
+ /* Last object for that bpid on this portal, disable the BSCN
+ * mask bit. */
+ bm_isr_bscn_mask(&pool->portal->p, pool->params.bpid, 0);
+ /* And "forget" that we last saw this pool as depleted */
+ bman_depletion_unset(&pool->portal->pools[1],
+ pool->params.bpid);
+ }
+ PORTAL_IRQ_UNLOCK(pool->portal, irqflags);
+}
+
+/* In the case that the application's core loop calls
+ * bman_poll(), we ought to balance how often we incur the overheads of the
+ * slow-path poll. We'll use two decrementer sources. The idle decrementer
+ * constant is used when the last slow-poll detected no work to do, and the busy
+ * decrementer constant when the last slow-poll had work to do. */
+#define SLOW_POLL_IDLE 1000
+#define SLOW_POLL_BUSY 10
+static u32 __poll_portal_slow(struct bman_portal *p, u32 is);
+
+/* Portal interrupt handler */
+static irqreturn_t portal_isr(__always_unused int irq, void *ptr)
+{
+ struct bman_portal *p = ptr;
+ u32 clear = p->irq_sources;
+ u32 is = bm_isr_status_read(&p->p) & p->irq_sources;
+ clear |= __poll_portal_slow(p, is);
+ bm_isr_status_clear(&p->p, clear);
+ return IRQ_HANDLED;
+}
+
+
+struct bman_portal *bman_create_portal(
+ struct bman_portal *portal,
+ const struct bm_portal_config *config)
+{
+ struct bm_portal *__p;
+ const struct bman_depletion *pools = &config->public_cfg.mask;
+ int ret;
+ u8 bpid = 0;
+
+ if (!portal) {
+ portal = kmalloc(sizeof(*portal), GFP_KERNEL);
+ if (!portal)
+ return portal;
+ portal->alloced = 1;
+ } else
+ portal->alloced = 0;
+
+ __p = &portal->p;
+
+ /* prep the low-level portal struct with the mapped addresses from the
+ * config, everything that follows depends on it and "config" is more
+ * for (de)reference... */
+ __p->addr.addr_ce = config->addr_virt[DPA_PORTAL_CE];
+ __p->addr.addr_ci = config->addr_virt[DPA_PORTAL_CI];
+ if (bm_rcr_init(__p, bm_rcr_pvb, bm_rcr_cce)) {
+ pr_err("Bman RCR initialisation failed\n");
+ goto fail_rcr;
+ }
+ if (bm_mc_init(__p)) {
+ pr_err("Bman MC initialisation failed\n");
+ goto fail_mc;
+ }
+ if (bm_isr_init(__p)) {
+ pr_err("Bman ISR initialisation failed\n");
+ goto fail_isr;
+ }
+ portal->pools = kmalloc(2 * sizeof(*pools), GFP_KERNEL);
+ if (!portal->pools)
+ goto fail_pools;
+ portal->pools[0] = *pools;
+ bman_depletion_init(portal->pools + 1);
+ while (bpid < bman_pool_max) {
+ /* Default to all BPIDs disabled, we enable as required at
+ * run-time. */
+ bm_isr_bscn_mask(__p, bpid, 0);
+ bpid++;
+ }
+ portal->slowpoll = 0;
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ portal->rcri_owned = NULL;
+#endif
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ raw_spin_lock_init(&portal->sharing_lock);
+ portal->is_shared = config->public_cfg.is_shared;
+ portal->sharing_redirect = NULL;
+#endif
+ memset(&portal->cb, 0, sizeof(portal->cb));
+ /* Write-to-clear any stale interrupt status bits */
+ bm_isr_disable_write(__p, 0xffffffff);
+ portal->irq_sources = 0;
+ bm_isr_enable_write(__p, portal->irq_sources);
+ bm_isr_status_clear(__p, 0xffffffff);
+ snprintf(portal->irqname, MAX_IRQNAME, IRQNAME, config->public_cfg.cpu);
+ if (request_irq(config->public_cfg.irq, portal_isr, 0, portal->irqname,
+ portal)) {
+ pr_err("request_irq() failed\n");
+ goto fail_irq;
+ }
+ if ((config->public_cfg.cpu != -1) &&
+ irq_can_set_affinity(config->public_cfg.irq) &&
+ irq_set_affinity(config->public_cfg.irq,
+ cpumask_of(config->public_cfg.cpu))) {
+ pr_err("irq_set_affinity() failed\n");
+ goto fail_affinity;
+ }
+
+ /* Need RCR to be empty before continuing */
+ ret = bm_rcr_get_fill(__p);
+ if (ret) {
+ pr_err("Bman RCR unclean\n");
+ goto fail_rcr_empty;
+ }
+ /* Success */
+ portal->config = config;
+
+ bm_isr_disable_write(__p, 0);
+ bm_isr_uninhibit(__p);
+ return portal;
+fail_rcr_empty:
+fail_affinity:
+ free_irq(config->public_cfg.irq, portal);
+fail_irq:
+ kfree(portal->pools);
+fail_pools:
+ bm_isr_finish(__p);
+fail_isr:
+ bm_mc_finish(__p);
+fail_mc:
+ bm_rcr_finish(__p);
+fail_rcr:
+ if (portal->alloced)
+ kfree(portal);
+ return NULL;
+}
+
+struct bman_portal *bman_create_affine_portal(
+ const struct bm_portal_config *config)
+{
+ struct bman_portal *portal;
+
+ portal = &per_cpu(bman_affine_portal, config->public_cfg.cpu);
+ portal = bman_create_portal(portal, config);
+ if (portal) {
+ spin_lock(&affine_mask_lock);
+ cpumask_set_cpu(config->public_cfg.cpu, &affine_mask);
+ spin_unlock(&affine_mask_lock);
+ }
+ return portal;
+}
+
+
+struct bman_portal *bman_create_affine_slave(struct bman_portal *redirect,
+ int cpu)
+{
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ struct bman_portal *p;
+ p = &per_cpu(bman_affine_portal, cpu);
+ BUG_ON(p->config);
+ BUG_ON(p->is_shared);
+ BUG_ON(!redirect->config->public_cfg.is_shared);
+ p->irq_sources = 0;
+ p->sharing_redirect = redirect;
+ put_affine_portal();
+ return p;
+#else
+ BUG();
+ return NULL;
+#endif
+}
+
+void bman_destroy_portal(struct bman_portal *bm)
+{
+ const struct bm_portal_config *pcfg;
+ pcfg = bm->config;
+ bm_rcr_cce_update(&bm->p);
+ bm_rcr_cce_update(&bm->p);
+
+ free_irq(pcfg->public_cfg.irq, bm);
+
+ kfree(bm->pools);
+ bm_isr_finish(&bm->p);
+ bm_mc_finish(&bm->p);
+ bm_rcr_finish(&bm->p);
+ bm->config = NULL;
+ if (bm->alloced)
+ kfree(bm);
+}
+
+const struct bm_portal_config *bman_destroy_affine_portal(void)
+{
+ struct bman_portal *bm = get_raw_affine_portal();
+ const struct bm_portal_config *pcfg;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (bm->sharing_redirect) {
+ bm->sharing_redirect = NULL;
+ put_affine_portal();
+ return NULL;
+ }
+ bm->is_shared = 0;
+#endif
+ pcfg = bm->config;
+ bman_destroy_portal(bm);
+ spin_lock(&affine_mask_lock);
+ cpumask_clear_cpu(pcfg->public_cfg.cpu, &affine_mask);
+ spin_unlock(&affine_mask_lock);
+ put_affine_portal();
+ return pcfg;
+}
+
+/* When release logic waits on available RCR space, we need a global waitqueue
+ * in the case of "affine" use (as the waits wake on different cpus which means
+ * different portals - so we can't wait on any per-portal waitqueue). */
+static DECLARE_WAIT_QUEUE_HEAD(affine_queue);
+
+static u32 __poll_portal_slow(struct bman_portal *p, u32 is)
+{
+ struct bman_depletion tmp;
+ u32 ret = is;
+
+ /* There is a gotcha to be aware of. If we do the query before clearing
+ * the status register, we may miss state changes that occur between the
+ * two. If we write to clear the status register before the query, the
+ * cache-enabled query command may overtake the status register write
+ * unless we use a heavyweight sync (which we don't want). Instead, we
+ * write-to-clear the status register then *read it back* before doing
+ * the query, hence the odd while loop with the 'is' accumulation. */
+ if (is & BM_PIRQ_BSCN) {
+ struct bm_mc_result *mcr;
+ __maybe_unused unsigned long irqflags;
+ unsigned int i, j;
+ u32 __is;
+ bm_isr_status_clear(&p->p, BM_PIRQ_BSCN);
+ while ((__is = bm_isr_status_read(&p->p)) & BM_PIRQ_BSCN) {
+ is |= __is;
+ bm_isr_status_clear(&p->p, BM_PIRQ_BSCN);
+ }
+ is &= ~BM_PIRQ_BSCN;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ bm_mc_start(&p->p);
+ bm_mc_commit(&p->p, BM_MCC_VERB_CMD_QUERY);
+ while (!(mcr = bm_mc_result(&p->p)))
+ cpu_relax();
+ tmp = mcr->query.ds.state;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ for (i = 0; i < 2; i++) {
+ int idx = i * 32;
+ /* tmp is a mask of currently-depleted pools.
+ * pools[0] is mask of those we care about.
+ * pools[1] is our previous view (we only want to
+ * be told about changes). */
+ tmp.__state[i] &= p->pools[0].__state[i];
+ if (tmp.__state[i] == p->pools[1].__state[i])
+ /* fast-path, nothing to see, move along */
+ continue;
+ for (j = 0; j <= 31; j++, idx++) {
+ struct bman_pool *pool = p->cb[idx];
+ int b4 = bman_depletion_get(&p->pools[1], idx);
+ int af = bman_depletion_get(&tmp, idx);
+ if (b4 == af)
+ continue;
+ while (pool) {
+ pool->params.cb(p, pool,
+ pool->params.cb_ctx, af);
+ pool = pool->next;
+ }
+ }
+ }
+ p->pools[1] = tmp;
+ }
+
+ if (is & BM_PIRQ_RCRI) {
+ __maybe_unused unsigned long irqflags;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ bm_rcr_cce_update(&p->p);
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ /* If waiting for sync, we only cancel the interrupt threshold
+ * when the ring utilisation hits zero. */
+ if (p->rcri_owned) {
+ if (!bm_rcr_get_fill(&p->p)) {
+ p->rcri_owned = NULL;
+ bm_rcr_set_ithresh(&p->p, 0);
+ }
+ } else
+#endif
+ bm_rcr_set_ithresh(&p->p, 0);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ wake_up(&affine_queue);
+ bm_isr_status_clear(&p->p, BM_PIRQ_RCRI);
+ is &= ~BM_PIRQ_RCRI;
+ }
+
+ /* There should be no status register bits left undefined */
+ DPA_ASSERT(!is);
+ return ret;
+}
+
+const struct bman_portal_config *bman_get_portal_config(void)
+{
+ struct bman_portal *p = get_affine_portal();
+ const struct bman_portal_config *ret = &p->config->public_cfg;
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(bman_get_portal_config);
+
+u32 bman_irqsource_get(void)
+{
+ struct bman_portal *p = get_raw_affine_portal();
+ u32 ret = p->irq_sources & BM_PIRQ_VISIBLE;
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(bman_irqsource_get);
+
+int bman_p_irqsource_add(struct bman_portal *p, __maybe_unused u32 bits)
+{
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (p->sharing_redirect)
+ return -EINVAL;
+ else
+#endif
+ {
+ __maybe_unused unsigned long irqflags;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ set_bits(bits & BM_PIRQ_VISIBLE, &p->irq_sources);
+ bm_isr_enable_write(&p->p, p->irq_sources);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ }
+ return 0;
+}
+EXPORT_SYMBOL(bman_p_irqsource_add);
+
+int bman_irqsource_add(__maybe_unused u32 bits)
+{
+ struct bman_portal *p = get_raw_affine_portal();
+ int ret = 0;
+ ret = bman_p_irqsource_add(p, bits);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(bman_irqsource_add);
+
+int bman_irqsource_remove(u32 bits)
+{
+ struct bman_portal *p = get_raw_affine_portal();
+ __maybe_unused unsigned long irqflags;
+ u32 ier;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (p->sharing_redirect) {
+ put_affine_portal();
+ return -EINVAL;
+ }
+#endif
+ /* Our interrupt handler only processes+clears status register bits that
+ * are in p->irq_sources. As we're trimming that mask, if one of them
+ * were to assert in the status register just before we remove it from
+ * the enable register, there would be an interrupt-storm when we
+ * release the IRQ lock. So we wait for the enable register update to
+ * take effect in h/w (by reading it back) and then clear all other bits
+ * in the status register. Ie. we clear them from ISR once it's certain
+ * IER won't allow them to reassert. */
+ PORTAL_IRQ_LOCK(p, irqflags);
+ bits &= BM_PIRQ_VISIBLE;
+ clear_bits(bits, &p->irq_sources);
+ bm_isr_enable_write(&p->p, p->irq_sources);
+ ier = bm_isr_enable_read(&p->p);
+ /* Using "~ier" (rather than "bits" or "~p->irq_sources") creates a
+ * data-dependency, ie. to protect against re-ordering. */
+ bm_isr_status_clear(&p->p, ~ier);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return 0;
+}
+EXPORT_SYMBOL(bman_irqsource_remove);
+
+const cpumask_t *bman_affine_cpus(void)
+{
+ return &affine_mask;
+}
+EXPORT_SYMBOL(bman_affine_cpus);
+
+u32 bman_poll_slow(void)
+{
+ struct bman_portal *p = get_poll_portal();
+ u32 ret;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (unlikely(p->sharing_redirect))
+ ret = (u32)-1;
+ else
+#endif
+ {
+ u32 is = bm_isr_status_read(&p->p) & ~p->irq_sources;
+ ret = __poll_portal_slow(p, is);
+ bm_isr_status_clear(&p->p, ret);
+ }
+ put_poll_portal();
+ return ret;
+}
+EXPORT_SYMBOL(bman_poll_slow);
+
+/* Legacy wrapper */
+void bman_poll(void)
+{
+ struct bman_portal *p = get_poll_portal();
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (unlikely(p->sharing_redirect))
+ goto done;
+#endif
+ if (!(p->slowpoll--)) {
+ u32 is = bm_isr_status_read(&p->p) & ~p->irq_sources;
+ u32 active = __poll_portal_slow(p, is);
+ if (active)
+ p->slowpoll = SLOW_POLL_BUSY;
+ else
+ p->slowpoll = SLOW_POLL_IDLE;
+ }
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+done:
+#endif
+ put_poll_portal();
+}
+EXPORT_SYMBOL(bman_poll);
+
+static const u32 zero_thresholds[4] = {0, 0, 0, 0};
+
+struct bman_pool *bman_new_pool(const struct bman_pool_params *params)
+{
+ struct bman_pool *pool = NULL;
+ u32 bpid;
+
+ if (params->flags & BMAN_POOL_FLAG_DYNAMIC_BPID) {
+ int ret = bman_alloc_bpid(&bpid);
+ if (ret)
+ return NULL;
+ } else {
+ if (params->bpid >= bman_pool_max)
+ return NULL;
+ bpid = params->bpid;
+ }
+#ifdef CONFIG_FSL_BMAN_CONFIG
+ if (params->flags & BMAN_POOL_FLAG_THRESH) {
+ int ret = bm_pool_set(bpid, params->thresholds);
+ if (ret)
+ goto err;
+ }
+#else
+ if (params->flags & BMAN_POOL_FLAG_THRESH)
+ goto err;
+#endif
+ pool = kmalloc(sizeof(*pool), GFP_KERNEL);
+ if (!pool)
+ goto err;
+ pool->sp = NULL;
+ pool->sp_fill = 0;
+ pool->params = *params;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ atomic_set(&pool->in_use, 1);
+#endif
+ if (params->flags & BMAN_POOL_FLAG_DYNAMIC_BPID)
+ pool->params.bpid = bpid;
+ if (params->flags & BMAN_POOL_FLAG_STOCKPILE) {
+ pool->sp = kmalloc(sizeof(struct bm_buffer) * BMAN_STOCKPILE_SZ,
+ GFP_KERNEL);
+ if (!pool->sp)
+ goto err;
+ }
+ if (pool->params.flags & BMAN_POOL_FLAG_DEPLETION) {
+ struct bman_portal *p = get_affine_portal();
+ if (!p->pools || !bman_depletion_get(&p->pools[0], bpid)) {
+ pr_err("Depletion events disabled for bpid %d\n", bpid);
+ goto err;
+ }
+ depletion_link(p, pool);
+ put_affine_portal();
+ }
+ return pool;
+err:
+#ifdef CONFIG_FSL_BMAN_CONFIG
+ if (params->flags & BMAN_POOL_FLAG_THRESH)
+ bm_pool_set(bpid, zero_thresholds);
+#endif
+ if (params->flags & BMAN_POOL_FLAG_DYNAMIC_BPID)
+ bman_release_bpid(bpid);
+ if (pool) {
+ kfree(pool->sp);
+ kfree(pool);
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(bman_new_pool);
+
+void bman_free_pool(struct bman_pool *pool)
+{
+#ifdef CONFIG_FSL_BMAN_CONFIG
+ if (pool->params.flags & BMAN_POOL_FLAG_THRESH)
+ bm_pool_set(pool->params.bpid, zero_thresholds);
+#endif
+ if (pool->params.flags & BMAN_POOL_FLAG_DEPLETION)
+ depletion_unlink(pool);
+ if (pool->params.flags & BMAN_POOL_FLAG_STOCKPILE) {
+ if (pool->sp_fill)
+ pr_err("Stockpile not flushed, has %u in bpid %u.\n",
+ pool->sp_fill, pool->params.bpid);
+ kfree(pool->sp);
+ pool->sp = NULL;
+ pool->params.flags ^= BMAN_POOL_FLAG_STOCKPILE;
+ }
+ if (pool->params.flags & BMAN_POOL_FLAG_DYNAMIC_BPID)
+ bman_release_bpid(pool->params.bpid);
+ kfree(pool);
+}
+EXPORT_SYMBOL(bman_free_pool);
+
+const struct bman_pool_params *bman_get_params(const struct bman_pool *pool)
+{
+ return &pool->params;
+}
+EXPORT_SYMBOL(bman_get_params);
+
+static noinline void update_rcr_ci(struct bman_portal *p, u8 avail)
+{
+ if (avail)
+ bm_rcr_cce_prefetch(&p->p);
+ else
+ bm_rcr_cce_update(&p->p);
+}
+
+int bman_rcr_is_empty(void)
+{
+ __maybe_unused unsigned long irqflags;
+ struct bman_portal *p = get_affine_portal();
+ u8 avail;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ update_rcr_ci(p, 0);
+ avail = bm_rcr_get_fill(&p->p);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return avail == 0;
+}
+EXPORT_SYMBOL(bman_rcr_is_empty);
+
+static inline struct bm_rcr_entry *try_rel_start(struct bman_portal **p,
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ __maybe_unused struct bman_pool *pool,
+#endif
+ __maybe_unused unsigned long *irqflags,
+ __maybe_unused u32 flags)
+{
+ struct bm_rcr_entry *r;
+ u8 avail;
+
+ *p = get_affine_portal();
+ PORTAL_IRQ_LOCK(*p, (*irqflags));
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
+ (flags & BMAN_RELEASE_FLAG_WAIT_SYNC))) {
+ if ((*p)->rcri_owned) {
+ PORTAL_IRQ_UNLOCK(*p, (*irqflags));
+ put_affine_portal();
+ return NULL;
+ }
+ (*p)->rcri_owned = pool;
+ }
+#endif
+ avail = bm_rcr_get_avail(&(*p)->p);
+ if (avail < 2)
+ update_rcr_ci(*p, avail);
+ r = bm_rcr_start(&(*p)->p);
+ if (unlikely(!r)) {
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
+ (flags & BMAN_RELEASE_FLAG_WAIT_SYNC)))
+ (*p)->rcri_owned = NULL;
+#endif
+ PORTAL_IRQ_UNLOCK(*p, (*irqflags));
+ put_affine_portal();
+ }
+ return r;
+}
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+static noinline struct bm_rcr_entry *__wait_rel_start(struct bman_portal **p,
+ struct bman_pool *pool,
+ __maybe_unused unsigned long *irqflags,
+ u32 flags)
+{
+ struct bm_rcr_entry *rcr = try_rel_start(p, pool, irqflags, flags);
+ if (!rcr)
+ bm_rcr_set_ithresh(&(*p)->p, 1);
+ return rcr;
+}
+
+static noinline struct bm_rcr_entry *wait_rel_start(struct bman_portal **p,
+ struct bman_pool *pool,
+ __maybe_unused unsigned long *irqflags,
+ u32 flags)
+{
+ struct bm_rcr_entry *rcr;
+#ifndef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ pool = NULL;
+#endif
+ if (flags & BMAN_RELEASE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (rcr = __wait_rel_start(p, pool, irqflags, flags)));
+ else
+ wait_event(affine_queue,
+ (rcr = __wait_rel_start(p, pool, irqflags, flags)));
+ return rcr;
+}
+#endif
+
+/* to facilitate better copying of bufs into the ring without either (a) copying
+ * noise into the first byte (prematurely triggering the command), nor (b) being
+ * very inefficient by copying small fields using read-modify-write */
+struct overlay_bm_buffer {
+ u32 first;
+ u32 second;
+};
+
+static inline int __bman_release(struct bman_pool *pool,
+ const struct bm_buffer *bufs, u8 num, u32 flags)
+{
+ struct bman_portal *p;
+ struct bm_rcr_entry *r;
+ struct overlay_bm_buffer *o_dest;
+ struct overlay_bm_buffer *o_src = (struct overlay_bm_buffer *)&bufs[0];
+ __maybe_unused unsigned long irqflags;
+ u32 i = num - 1;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & BMAN_RELEASE_FLAG_WAIT)
+ r = wait_rel_start(&p, pool, &irqflags, flags);
+ else
+ r = try_rel_start(&p, pool, &irqflags, flags);
+#else
+ r = try_rel_start(&p, &irqflags, flags);
+#endif
+ if (!r)
+ return -EBUSY;
+ /* We can copy all but the first entry, as this can trigger badness
+ * with the valid-bit. Use the overlay to mask the verb byte. */
+ o_dest = (struct overlay_bm_buffer *)&r->bufs[0];
+ o_dest->first = (o_src->first & 0x0000ffff) |
+ (((u32)pool->params.bpid << 16) & 0x00ff0000);
+ o_dest->second = o_src->second;
+ if (i)
+ copy_words(&r->bufs[1], &bufs[1], i * sizeof(bufs[0]));
+ bm_rcr_pvb_commit(&p->p, BM_RCR_VERB_CMD_BPID_SINGLE |
+ (num & BM_RCR_VERB_BUFCOUNT_MASK));
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ /* if we wish to sync we need to set the threshold after h/w sees the
+ * new ring entry. As we're mixing cache-enabled and cache-inhibited
+ * accesses, this requires a heavy-weight sync. */
+ if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
+ (flags & BMAN_RELEASE_FLAG_WAIT_SYNC))) {
+ hwsync();
+ bm_rcr_set_ithresh(&p->p, 1);
+ }
+#endif
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
+ (flags & BMAN_RELEASE_FLAG_WAIT_SYNC))) {
+ if (flags & BMAN_RELEASE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->rcri_owned != pool));
+ else
+ wait_event(affine_queue, (p->rcri_owned != pool));
+ }
+#endif
+ return 0;
+}
+
+int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num,
+ u32 flags)
+{
+ int ret = 0;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (!num || (num > 8))
+ return -EINVAL;
+ if (pool->params.flags & BMAN_POOL_FLAG_NO_RELEASE)
+ return -EINVAL;
+#endif
+ /* Without stockpile, this API is a pass-through to the h/w operation */
+ if (!(pool->params.flags & BMAN_POOL_FLAG_STOCKPILE))
+ return __bman_release(pool, bufs, num, flags);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (!atomic_dec_and_test(&pool->in_use)) {
+ pr_crit("Parallel attempts to enter bman_released() detected.");
+ panic("only one instance of bman_released/acquired allowed");
+ }
+#endif
+ /* This needs some explanation. Adding the given buffers may take the
+ * stockpile over the threshold, but in fact the stockpile may already
+ * *be* over the threshold if a previous release-to-hw attempt had
+ * failed. So we have 3 cases to cover;
+ * 1. we add to the stockpile and don't hit the threshold,
+ * 2. we add to the stockpile, hit the threshold and release-to-hw,
+ * 3. we have to release-to-hw before adding to the stockpile
+ * (not enough room in the stockpile for case 2).
+ * Our constraints on thresholds guarantee that in case 3, there must be
+ * at least 8 bufs already in the stockpile, so all release-to-hw ops
+ * are for 8 bufs. Despite all this, the API must indicate whether the
+ * given buffers were taken off the caller's hands, irrespective of
+ * whether a release-to-hw was attempted. */
+ while (num) {
+ /* Add buffers to stockpile if they fit */
+ if ((pool->sp_fill + num) < BMAN_STOCKPILE_SZ) {
+ copy_words(pool->sp + pool->sp_fill, bufs,
+ sizeof(struct bm_buffer) * num);
+ pool->sp_fill += num;
+ num = 0; /* --> will return success no matter what */
+ }
+ /* Do hw op if hitting the high-water threshold */
+ if ((pool->sp_fill + num) >= BMAN_STOCKPILE_HIGH) {
+ ret = __bman_release(pool,
+ pool->sp + (pool->sp_fill - 8), 8, flags);
+ if (ret) {
+ ret = (num ? ret : 0);
+ goto release_done;
+ }
+ pool->sp_fill -= 8;
+ }
+ }
+release_done:
+#ifdef CONFIG_FSL_DPA_CHECKING
+ atomic_inc(&pool->in_use);
+#endif
+ return ret;
+}
+EXPORT_SYMBOL(bman_release);
+
+static inline int __bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs,
+ u8 num)
+{
+ struct bman_portal *p = get_affine_portal();
+ struct bm_mc_command *mcc;
+ struct bm_mc_result *mcr;
+ __maybe_unused unsigned long irqflags;
+ int ret;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = bm_mc_start(&p->p);
+ mcc->acquire.bpid = pool->params.bpid;
+ bm_mc_commit(&p->p, BM_MCC_VERB_CMD_ACQUIRE |
+ (num & BM_MCC_VERB_ACQUIRE_BUFCOUNT));
+ while (!(mcr = bm_mc_result(&p->p)))
+ cpu_relax();
+ ret = mcr->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT;
+ if (bufs)
+ copy_words(&bufs[0], &mcr->acquire.bufs[0],
+ num * sizeof(bufs[0]));
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (ret != num)
+ ret = -ENOMEM;
+ return ret;
+}
+
+int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num,
+ u32 flags)
+{
+ int ret = 0;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (!num || (num > 8))
+ return -EINVAL;
+ if (pool->params.flags & BMAN_POOL_FLAG_ONLY_RELEASE)
+ return -EINVAL;
+#endif
+ /* Without stockpile, this API is a pass-through to the h/w operation */
+ if (!(pool->params.flags & BMAN_POOL_FLAG_STOCKPILE))
+ return __bman_acquire(pool, bufs, num);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (!atomic_dec_and_test(&pool->in_use)) {
+ pr_crit("Parallel attempts to enter bman_acquire() detected.");
+ panic("only one instance of bman_released/acquired allowed");
+ }
+#endif
+ /* Only need a h/w op if we'll hit the low-water thresh */
+ if (!(flags & BMAN_ACQUIRE_FLAG_STOCKPILE) &&
+ (pool->sp_fill <= (BMAN_STOCKPILE_LOW + num))) {
+ /* refill stockpile with max amount, but if max amount
+ * isn't available, try amount the user wants */
+ int bufcount = 8;
+ ret = __bman_acquire(pool, pool->sp + pool->sp_fill, bufcount);
+ if (ret < 0 && bufcount != num) {
+ bufcount = num;
+ /* Maybe buffer pool has less than 8 */
+ ret = __bman_acquire(pool, pool->sp + pool->sp_fill,
+ bufcount);
+ }
+ if (ret < 0)
+ goto hw_starved;
+ DPA_ASSERT(ret == bufcount);
+ pool->sp_fill += bufcount;
+ } else {
+hw_starved:
+ if (pool->sp_fill < num) {
+ ret = -ENOMEM;
+ goto acquire_done;
+ }
+ }
+ copy_words(bufs, pool->sp + (pool->sp_fill - num),
+ sizeof(struct bm_buffer) * num);
+ pool->sp_fill -= num;
+ ret = num;
+acquire_done:
+#ifdef CONFIG_FSL_DPA_CHECKING
+ atomic_inc(&pool->in_use);
+#endif
+ return ret;
+}
+EXPORT_SYMBOL(bman_acquire);
+
+int bman_flush_stockpile(struct bman_pool *pool, u32 flags)
+{
+ u8 num;
+ int ret;
+
+ while (pool->sp_fill) {
+ num = ((pool->sp_fill > 8) ? 8 : pool->sp_fill);
+ ret = __bman_release(pool, pool->sp + (pool->sp_fill - num),
+ num, flags);
+ if (ret)
+ return ret;
+ pool->sp_fill -= num;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(bman_flush_stockpile);
+
+#ifdef CONFIG_FSL_BMAN_CONFIG
+u32 bman_query_free_buffers(struct bman_pool *pool)
+{
+ return bm_pool_free_buffers(pool->params.bpid);
+}
+EXPORT_SYMBOL(bman_query_free_buffers);
+
+int bman_update_pool_thresholds(struct bman_pool *pool, const u32 *thresholds)
+{
+ u32 bpid;
+
+ bpid = bman_get_params(pool)->bpid;
+
+ return bm_pool_set(bpid, thresholds);
+}
+EXPORT_SYMBOL(bman_update_pool_thresholds);
+#endif
+
+int bman_shutdown_pool(u32 bpid)
+{
+ struct bman_portal *p = get_affine_portal();
+ __maybe_unused unsigned long irqflags;
+ int ret;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ ret = bm_shutdown_pool(&p->p, bpid);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(bman_shutdown_pool);
+
+const struct bm_portal_config *bman_get_bm_portal_config(
+ struct bman_portal *portal)
+{
+ return portal->sharing_redirect ? NULL : portal->config;
+}
diff --git a/drivers/soc/freescale/bman_portal.c b/drivers/soc/freescale/bman_portal.c
new file mode 100644
index 0000000..1c67065
--- /dev/null
+++ b/drivers/soc/freescale/bman_portal.c
@@ -0,0 +1,330 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman_priv.h"
+
+/*
+ * Global variables of the max portal/pool number this bman version supported
+ */
+u16 bman_ip_rev;
+EXPORT_SYMBOL(bman_ip_rev);
+u16 bman_pool_max;
+EXPORT_SYMBOL(bman_pool_max);
+
+/* After initialising cpus that own shared portal configs, we cache the
+ * resulting portals (ie. not just the configs) in this array. Then we
+ * initialise slave cpus that don't have their own portals, redirecting them to
+ * portals from this cache in a round-robin assignment. */
+static struct bman_portal *shared_portals[NR_CPUS] __initdata;
+static int num_shared_portals __initdata;
+static int shared_portals_idx __initdata;
+static struct list_head unused_pcfgs __initdata = LIST_HEAD_INIT(unused_pcfgs);
+
+static void *affine_bportals[NR_CPUS];
+
+static struct bm_portal_config * __init parse_pcfg(struct device_node *node)
+{
+ struct bm_portal_config *pcfg;
+ int irq, ret;
+
+ pcfg = kmalloc(sizeof(*pcfg), GFP_KERNEL);
+ if (!pcfg) {
+ pr_err("can't allocate portal config");
+ return NULL;
+ }
+
+ if (of_device_is_compatible(node, "fsl,bman-portal-1.0") ||
+ of_device_is_compatible(node, "fsl,bman-portal-1.0.0")) {
+ bman_ip_rev = BMAN_REV10;
+ bman_pool_max = 64;
+ } else if (of_device_is_compatible(node, "fsl,bman-portal-2.0") ||
+ of_device_is_compatible(node, "fsl,bman-portal-2.0.8")) {
+ bman_ip_rev = BMAN_REV20;
+ bman_pool_max = 8;
+ } else if (of_device_is_compatible(node, "fsl,bman-portal-2.1.0") ||
+ of_device_is_compatible(node, "fsl,bman-portal-2.1.1") ||
+ of_device_is_compatible(node, "fsl,bman-portal-2.1.2") ||
+ of_device_is_compatible(node, "fsl,bman-portal-2.1.3")) {
+ bman_ip_rev = BMAN_REV21;
+ bman_pool_max = 64;
+ }
+
+ ret = of_address_to_resource(node, DPA_PORTAL_CE,
+ &pcfg->addr_phys[DPA_PORTAL_CE]);
+ if (ret) {
+ pr_err("Can't get %s property 'reg::CE'\n", node->full_name);
+ goto err;
+ }
+ ret = of_address_to_resource(node, DPA_PORTAL_CI,
+ &pcfg->addr_phys[DPA_PORTAL_CI]);
+ if (ret) {
+ pr_err("Can't get %s property 'reg::CI'\n", node->full_name);
+ goto err;
+ }
+
+ pcfg->public_cfg.cpu = -1;
+
+ irq = irq_of_parse_and_map(node, 0);
+ if (irq == NO_IRQ) {
+ pr_err("Can't get %s property 'interrupts'\n", node->full_name);
+ goto err;
+ }
+ pcfg->public_cfg.irq = irq;
+ bman_depletion_fill(&pcfg->public_cfg.mask);
+
+ pcfg->addr_virt[DPA_PORTAL_CE] = ioremap_prot(
+ pcfg->addr_phys[DPA_PORTAL_CE].start,
+ resource_size(&pcfg->addr_phys[DPA_PORTAL_CE]),
+ 0);
+ pcfg->addr_virt[DPA_PORTAL_CI] = ioremap_prot(
+ pcfg->addr_phys[DPA_PORTAL_CI].start,
+ resource_size(&pcfg->addr_phys[DPA_PORTAL_CI]),
+ _PAGE_GUARDED | _PAGE_NO_CACHE);
+ return pcfg;
+err:
+ kfree(pcfg);
+ return NULL;
+}
+
+static struct bm_portal_config * __init get_pcfg(struct list_head *list)
+{
+ struct bm_portal_config *pcfg;
+
+ if (list_empty(list))
+ return NULL;
+ pcfg = list_entry(list->prev, struct bm_portal_config, list);
+ list_del(&pcfg->list);
+
+ return pcfg;
+}
+
+static struct bman_portal * __init init_pcfg(struct bm_portal_config *pcfg)
+{
+ struct bman_portal *p = bman_create_affine_portal(pcfg);
+
+ if (p) {
+#ifdef CONFIG_FSL_DPA_PIRQ_SLOW
+ bman_p_irqsource_add(p, BM_PIRQ_RCRI | BM_PIRQ_BSCN);
+#endif
+ pr_info("Bman portal %s initialised, cpu %d\n",
+ pcfg->public_cfg.is_shared ? "(shared) " : "",
+ pcfg->public_cfg.cpu);
+ affine_bportals[pcfg->public_cfg.cpu] = p;
+ } else
+ pr_crit("Bman portal failure on cpu %d\n",
+ pcfg->public_cfg.cpu);
+
+ return p;
+}
+
+static void __init init_slave(int cpu)
+{
+ struct bman_portal *p;
+
+ p = bman_create_affine_slave(shared_portals[shared_portals_idx++], cpu);
+ if (!p)
+ pr_err("Bman slave portal failure on cpu %d\n", cpu);
+ else
+ pr_info("Bman portal %s initialised, cpu %d\n", "(slave) ", cpu);
+ if (shared_portals_idx >= num_shared_portals)
+ shared_portals_idx = 0;
+ affine_bportals[cpu] = p;
+}
+
+/* Bootarg "bportals=[...]" has the same syntax as "qportals=", and so the
+ * parsing is in dpaa_sys.h. The syntax is a comma-separated list of indexes
+ * and/or ranges of indexes, with each being optionally prefixed by "s" to
+ * explicitly mark it or them for sharing.
+ * Eg;
+ * bportals=s0,1-3,s4
+ * means that cpus 1,2,3 get "unshared" portals, cpus 0 and 4 get "shared"
+ * portals, and any remaining cpus share the portals that are assigned to cpus 0
+ * or 4, selected in a round-robin fashion. (In this example, cpu 5 would share
+ * cpu 0's portal, cpu 6 would share cpu4's portal, and cpu 7 would share cpu
+ * 0's portal.) */
+static struct cpumask want_unshared __initdata; /* cpus requested without "s" */
+static struct cpumask want_shared __initdata; /* cpus requested with "s" */
+
+static int __init parse_bportals(char *str)
+{
+ return parse_portals_bootarg(str, &want_shared, &want_unshared,
+ "bportals");
+}
+__setup("bportals=", parse_bportals);
+
+static void bman_offline_cpu(unsigned int cpu)
+{
+ struct bman_portal *p = (struct bman_portal *)affine_bportals[cpu];
+ const struct bm_portal_config *pcfg;
+
+ if (p) {
+ pcfg = bman_get_bm_portal_config(p);
+ if (pcfg)
+ irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(0));
+ }
+}
+
+/* Initialise the Bman driver. The meat of this function deals with portals. The
+ * following describes the flow of portal-handling, the code "steps" refer to
+ * this description;
+ * 1. Portal configs are parsed from the device-tree into 'unused_pcfgs', with
+ * ::cpu==-1. Regions and interrupts are mapped (but interrupts are not
+ * bound).
+ * 2. The "want_shared" and "want_unshared" lists (as filled by the
+ * "bportals=[...]" bootarg) are processed, allocating portals and assigning
+ * them to cpus, placing them in the relevant list and setting ::cpu as
+ * appropriate. If no "bportals" bootarg was present, the defaut is to try to
+ * assign portals to all online cpus at the time of driver initialisation.
+ * Any failure to allocate portals (when parsing the "want" lists or when
+ * using default behaviour) will be silently tolerated (the "fixup" logic in
+ * step 3 will determine what happens in this case).
+ * 3. Do fixups relative to cpu_online_mask(). If no portals are marked for
+ * sharing and sharing is required (because not all cpus have been assigned
+ * portals), then one portal will marked for sharing. Conversely if no
+ * sharing is required, any portals marked for sharing will not be shared. It
+ * may be that sharing occurs when it wasn't expected, if portal allocation
+ * failed to honour all the requested assignments (including the default
+ * assignments if no bootarg is present).
+ * 4. Unshared portals are initialised on their respective cpus.
+ * 5. Shared portals are initialised on their respective cpus.
+ * 6. Each remaining cpu is initialised to slave to one of the shared portals,
+ * which are selected in a round-robin fashion.
+ */
+int __init bman_init(void)
+{
+ struct cpumask slave_cpus;
+ struct cpumask unshared_cpus = *cpu_none_mask;
+ struct cpumask shared_cpus = *cpu_none_mask;
+ LIST_HEAD(unshared_pcfgs);
+ LIST_HEAD(shared_pcfgs);
+ struct device_node *dn;
+ struct bm_portal_config *pcfg;
+ struct bman_portal *p;
+ int cpu;
+ struct cpumask offline_cpus;
+
+ /* Initialise the Bman (CCSR) device */
+ for_each_compatible_node(dn, NULL, "fsl,bman") {
+ if (!bman_init_ccsr(dn))
+ pr_info("Bman err interrupt handler present\n");
+ else
+ pr_err("Bman CCSR setup failed\n");
+ }
+ /* Step 1. See comments at the beginning of the file. */
+ for_each_compatible_node(dn, NULL, "fsl,bman-portal") {
+ if (!of_device_is_available(dn))
+ continue;
+ pcfg = parse_pcfg(dn);
+ if (pcfg)
+ list_add_tail(&pcfg->list, &unused_pcfgs);
+ }
+ /* Step 2. */
+ for_each_possible_cpu(cpu) {
+ if (cpumask_test_cpu(cpu, &want_shared)) {
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &shared_pcfgs);
+ cpumask_set_cpu(cpu, &shared_cpus);
+ }
+ if (cpumask_test_cpu(cpu, &want_unshared)) {
+ if (cpumask_test_cpu(cpu, &shared_cpus))
+ continue;
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &unshared_pcfgs);
+ cpumask_set_cpu(cpu, &unshared_cpus);
+ }
+ }
+ if (list_empty(&shared_pcfgs) && list_empty(&unshared_pcfgs)) {
+ /* Default, give an unshared portal to each online cpu */
+ for_each_possible_cpu(cpu) {
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &unshared_pcfgs);
+ cpumask_set_cpu(cpu, &unshared_cpus);
+ }
+ }
+ /* Step 3. */
+ cpumask_andnot(&slave_cpus, cpu_possible_mask, &shared_cpus);
+ cpumask_andnot(&slave_cpus, &slave_cpus, &unshared_cpus);
+ if (cpumask_empty(&slave_cpus)) {
+ /* No sharing required */
+ if (!list_empty(&shared_pcfgs)) {
+ /* Migrate "shared" to "unshared" */
+ cpumask_or(&unshared_cpus, &unshared_cpus,
+ &shared_cpus);
+ cpumask_clear(&shared_cpus);
+ list_splice_tail(&shared_pcfgs, &unshared_pcfgs);
+ INIT_LIST_HEAD(&shared_pcfgs);
+ }
+ } else {
+ /* Sharing required */
+ if (list_empty(&shared_pcfgs)) {
+ /* Migrate one "unshared" to "shared" */
+ pcfg = get_pcfg(&unshared_pcfgs);
+ if (!pcfg) {
+ pr_crit("No BMan portals available!\n");
+ return 0;
+ }
+ cpumask_clear_cpu(pcfg->public_cfg.cpu, &unshared_cpus);
+ cpumask_set_cpu(pcfg->public_cfg.cpu, &shared_cpus);
+ list_add_tail(&pcfg->list, &shared_pcfgs);
+ }
+ }
+ /* Step 4. */
+ list_for_each_entry(pcfg, &unshared_pcfgs, list) {
+ pcfg->public_cfg.is_shared = 0;
+ p = init_pcfg(pcfg);
+ }
+ /* Step 5. */
+ list_for_each_entry(pcfg, &shared_pcfgs, list) {
+ pcfg->public_cfg.is_shared = 1;
+ p = init_pcfg(pcfg);
+ if (p)
+ shared_portals[num_shared_portals++] = p;
+ }
+ /* Step 6. */
+ if (!cpumask_empty(&slave_cpus))
+ for_each_cpu(cpu, &slave_cpus)
+ init_slave(cpu);
+ pr_info("Bman portals initialised\n");
+ cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask);
+ for_each_cpu(cpu, &offline_cpus)
+ bman_offline_cpu(cpu);
+
+ return 0;
+}
diff --git a/drivers/soc/freescale/bman_priv.h b/drivers/soc/freescale/bman_priv.h
new file mode 100644
index 0000000..a183cc6
--- /dev/null
+++ b/drivers/soc/freescale/bman_priv.h
@@ -0,0 +1,149 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "dpaa_sys.h"
+#include <linux/fsl_bman.h>
+
+/* Revision info (for errata and feature handling) */
+#define BMAN_REV10 0x0100
+#define BMAN_REV20 0x0200
+#define BMAN_REV21 0x0201
+extern u16 bman_ip_rev; /* 0 if uninitialised, otherwise BMAN_REVx */
+
+/*
+ * Global variables of the max portal/pool number this bman version supported
+ */
+extern u16 bman_pool_max;
+
+/* used by CCSR and portal interrupt code */
+enum bm_isr_reg {
+ bm_isr_status = 0,
+ bm_isr_enable = 1,
+ bm_isr_disable = 2,
+ bm_isr_inhibit = 3
+};
+
+struct bm_portal_config {
+ /* Corenet portal addresses;
+ * [0]==cache-enabled, [1]==cache-inhibited. */
+ __iomem void *addr_virt[2];
+ struct resource addr_phys[2];
+ /* Allow these to be joined in lists */
+ struct list_head list;
+ /* User-visible portal configuration settings */
+ struct bman_portal_config public_cfg;
+};
+
+#ifdef CONFIG_FSL_BMAN_CONFIG
+/* Hooks from bman_driver.c to bman_config.c */
+int bman_init_ccsr(struct device_node *node);
+#endif
+
+/* Hooks from bman_driver.c in to bman_high.c */
+struct bman_portal *bman_create_portal(
+ struct bman_portal *portal,
+ const struct bm_portal_config *config);
+struct bman_portal *bman_create_affine_portal(
+ const struct bm_portal_config *config);
+struct bman_portal *bman_create_affine_slave(struct bman_portal *redirect,
+ int cpu);
+void bman_destroy_portal(struct bman_portal *bm);
+
+const struct bm_portal_config *bman_destroy_affine_portal(void);
+
+/* Pool logic in the portal driver, during initialisation, needs to know if
+ * there's access to CCSR or not (if not, it'll cripple the pool allocator). */
+#ifdef CONFIG_FSL_BMAN_CONFIG
+int bman_have_ccsr(void);
+#else
+#define bman_have_ccsr() 0
+#endif
+
+/* Stockpile build constants. The _LOW value: when bman_acquire() is called and
+ * the stockpile fill-level is <= _LOW, an acquire is attempted from h/w but it
+ * might fail (if the buffer pool is depleted). So this value provides some
+ * "stagger" in that the bman_acquire() function will only fail if lots of bufs
+ * are requested at once or if h/w has been tested a couple of times without
+ * luck. The _HIGH value: when bman_release() is called and the stockpile
+ * fill-level is >= _HIGH, a release is attempted to h/w but it might fail (if
+ * the release ring is full). So this value provides some "stagger" so that
+ * ring-access is retried a couple of times prior to the API returning a
+ * failure. The following *must* be true;
+ * BMAN_STOCKPILE_HIGH-BMAN_STOCKPILE_LOW > 8
+ * (to avoid thrashing)
+ * BMAN_STOCKPILE_SZ >= 16
+ * (as the release logic expects to either send 8 buffers to hw prior to
+ * adding the given buffers to the stockpile or add the buffers to the
+ * stockpile before sending 8 to hw, as the API must be an all-or-nothing
+ * success/fail.)
+ */
+#define BMAN_STOCKPILE_SZ 16u /* number of bufs in per-pool cache */
+#define BMAN_STOCKPILE_LOW 2u /* when fill is <= this, acquire from hw */
+#define BMAN_STOCKPILE_HIGH 14u /* when fill is >= this, release to hw */
+
+/*************************************************/
+/* BMan s/w corenet portal, low-level i/face */
+/*************************************************/
+
+/* Used by all portal interrupt registers except 'inhibit'
+ * This mask contains all the "irqsource" bits visible to API users
+ */
+#define BM_PIRQ_VISIBLE (BM_PIRQ_RCRI | BM_PIRQ_BSCN)
+
+/* These are bm_<reg>_<verb>(). So for example, bm_disable_write() means "write
+ * the disable register" rather than "disable the ability to write". */
+#define bm_isr_status_read(bm) __bm_isr_read(bm, bm_isr_status)
+#define bm_isr_status_clear(bm, m) __bm_isr_write(bm, bm_isr_status, m)
+#define bm_isr_enable_read(bm) __bm_isr_read(bm, bm_isr_enable)
+#define bm_isr_enable_write(bm, v) __bm_isr_write(bm, bm_isr_enable, v)
+#define bm_isr_disable_read(bm) __bm_isr_read(bm, bm_isr_disable)
+#define bm_isr_disable_write(bm, v) __bm_isr_write(bm, bm_isr_disable, v)
+#define bm_isr_inhibit(bm) __bm_isr_write(bm, bm_isr_inhibit, 1)
+#define bm_isr_uninhibit(bm) __bm_isr_write(bm, bm_isr_inhibit, 0)
+
+#ifdef CONFIG_FSL_BMAN_CONFIG
+/* Set depletion thresholds associated with a buffer pool. Requires that the
+ * operating system have access to Bman CCSR (ie. compiled in support and
+ * run-time access courtesy of the device-tree). */
+int bm_pool_set(u32 bpid, const u32 *thresholds);
+#define BM_POOL_THRESH_SW_ENTER 0
+#define BM_POOL_THRESH_SW_EXIT 1
+#define BM_POOL_THRESH_HW_ENTER 2
+#define BM_POOL_THRESH_HW_EXIT 3
+
+/* Read the free buffer count for a given buffer */
+u32 bm_pool_free_buffers(u32 bpid);
+
+__init int bman_init(void);
+
+const struct bm_portal_config *bman_get_bm_portal_config(
+ struct bman_portal *portal);
+#endif /* CONFIG_FSL_BMAN_CONFIG */
diff --git a/drivers/soc/freescale/dpaa_alloc.c b/drivers/soc/freescale/dpaa_alloc.c
new file mode 100644
index 0000000..10d24b6
--- /dev/null
+++ b/drivers/soc/freescale/dpaa_alloc.c
@@ -0,0 +1,404 @@
+/* Copyright 2009-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "dpaa_sys.h"
+#include <linux/fsl_bman.h>
+
+/* This interface is needed in a few places and though it's not specific to
+ * USDPAA as such, creating a new header for it doesn't make any sense. The
+ * qbman kernel driver implements this interface and uses it as the backend for
+ * both the FQID and BPID allocators. The fsl_usdpaa driver also uses this
+ * interface for tracking per-process allocations handed out to user-space
+ */
+struct dpa_alloc {
+ struct list_head free;
+ spinlock_t lock;
+ struct list_head used;
+};
+
+#define DECLARE_DPA_ALLOC(name) \
+ struct dpa_alloc name = { \
+ .free = { \
+ .prev = &name.free, \
+ .next = &name.free \
+ }, \
+ .lock = __SPIN_LOCK_UNLOCKED(name.lock), \
+ .used = { \
+ .prev = &name.used, \
+ .next = &name.used \
+ } \
+ }
+
+/* The allocator is a (possibly-empty) list of these */
+struct alloc_node {
+ struct list_head list;
+ u32 base;
+ u32 num;
+ /* refcount and is_alloced are only set
+ when the node is in the used list */
+ unsigned int refcount;
+ int is_alloced;
+};
+
+#ifdef DPA_ALLOC_DEBUG
+#define DPRINT pr_info
+static void DUMP(struct dpa_alloc *alloc)
+{
+ int off = 0;
+ char buf[256];
+ struct alloc_node *p;
+ pr_info("Free Nodes\n");
+ list_for_each_entry(p, &alloc->free, list) {
+ if (off < 255)
+ off += snprintf(buf + off, 255-off, "{%d,%d}",
+ p->base, p->base + p->num - 1);
+ }
+ pr_info("%s\n", buf);
+
+ off = 0;
+ pr_info("Used Nodes\n");
+ list_for_each_entry(p, &alloc->used, list) {
+ if (off < 255)
+ off += snprintf(buf + off, 255-off, "{%d,%d}",
+ p->base, p->base + p->num - 1);
+ }
+ pr_info("%s\n", buf);
+}
+#else
+#define DPRINT(x...)
+#define DUMP(a)
+#endif
+
+static int dpa_alloc_new(struct dpa_alloc *alloc,
+ u32 *result, u32 count, u32 align, int partial)
+{
+ struct alloc_node *i = NULL, *next_best = NULL, *used_node = NULL;
+ u32 base, next_best_base = 0, num = 0, next_best_num = 0;
+ struct alloc_node *margin_left, *margin_right;
+
+ *result = (u32)-1;
+ DPRINT("alloc_range(%d,%d,%d)\n", count, align, partial);
+ DUMP(alloc);
+ /* If 'align' is 0, it should behave as though it was 1 */
+ if (!align)
+ align = 1;
+ margin_left = kmalloc(sizeof(*margin_left), GFP_KERNEL);
+ if (!margin_left)
+ goto err;
+ margin_right = kmalloc(sizeof(*margin_right), GFP_KERNEL);
+ if (!margin_right) {
+ kfree(margin_left);
+ goto err;
+ }
+ spin_lock_irq(&alloc->lock);
+ list_for_each_entry(i, &alloc->free, list) {
+ base = (i->base + align - 1) / align;
+ base *= align;
+ if ((base - i->base) >= i->num)
+ /* alignment is impossible, regardless of count */
+ continue;
+ num = i->num - (base - i->base);
+ if (num >= count) {
+ /* this one will do nicely */
+ num = count;
+ goto done;
+ }
+ if (num > next_best_num) {
+ next_best = i;
+ next_best_base = base;
+ next_best_num = num;
+ }
+ }
+ if (partial && next_best) {
+ i = next_best;
+ base = next_best_base;
+ num = next_best_num;
+ } else
+ i = NULL;
+done:
+ if (i) {
+ if (base != i->base) {
+ margin_left->base = i->base;
+ margin_left->num = base - i->base;
+ list_add_tail(&margin_left->list, &i->list);
+ } else
+ kfree(margin_left);
+ if ((base + num) < (i->base + i->num)) {
+ margin_right->base = base + num;
+ margin_right->num = (i->base + i->num) -
+ (base + num);
+ list_add(&margin_right->list, &i->list);
+ } else
+ kfree(margin_right);
+ list_del(&i->list);
+ kfree(i);
+ *result = base;
+ }
+ spin_unlock_irq(&alloc->lock);
+err:
+ DPRINT("returning %d\n", i ? num : -ENOMEM);
+ DUMP(alloc);
+ if (!i)
+ return -ENOMEM;
+
+ /* Add the allocation to the used list with a refcount of 1 */
+ used_node = kmalloc(sizeof(*used_node), GFP_KERNEL);
+ if (!used_node)
+ return -ENOMEM;
+ used_node->base = *result;
+ used_node->num = num;
+ used_node->refcount = 1;
+ used_node->is_alloced = 1;
+ list_add_tail(&used_node->list, &alloc->used);
+ return (int)num;
+}
+
+/* Allocate the list node using GFP_ATOMIC, because we *really* want to avoid
+ * forcing error-handling on to users in the deallocation path. */
+static void _dpa_alloc_free(struct dpa_alloc *alloc, u32 base_id, u32 count)
+{
+ struct alloc_node *i, *node = kmalloc(sizeof(*node), GFP_ATOMIC);
+ BUG_ON(!node);
+ DPRINT("release_range(%d,%d)\n", base_id, count);
+ DUMP(alloc);
+ BUG_ON(!count);
+ spin_lock_irq(&alloc->lock);
+
+
+ node->base = base_id;
+ node->num = count;
+ list_for_each_entry(i, &alloc->free, list) {
+ if (i->base >= node->base) {
+ /* BUG_ON(any overlapping) */
+ BUG_ON(i->base < (node->base + node->num));
+ list_add_tail(&node->list, &i->list);
+ goto done;
+ }
+ }
+ list_add_tail(&node->list, &alloc->free);
+done:
+ /* Merge to the left */
+ i = list_entry(node->list.prev, struct alloc_node, list);
+ if (node->list.prev != &alloc->free) {
+ BUG_ON((i->base + i->num) > node->base);
+ if ((i->base + i->num) == node->base) {
+ node->base = i->base;
+ node->num += i->num;
+ list_del(&i->list);
+ kfree(i);
+ }
+ }
+ /* Merge to the right */
+ i = list_entry(node->list.next, struct alloc_node, list);
+ if (node->list.next != &alloc->free) {
+ BUG_ON((node->base + node->num) > i->base);
+ if ((node->base + node->num) == i->base) {
+ node->num += i->num;
+ list_del(&i->list);
+ kfree(i);
+ }
+ }
+ spin_unlock_irq(&alloc->lock);
+ DUMP(alloc);
+}
+
+static void dpa_alloc_free(struct dpa_alloc *alloc, u32 base_id, u32 count)
+{
+ struct alloc_node *i = NULL;
+ spin_lock_irq(&alloc->lock);
+
+ /* First find the node in the used list and decrement its ref count */
+ list_for_each_entry(i, &alloc->used, list) {
+ if (i->base == base_id && i->num == count) {
+ --i->refcount;
+ if (i->refcount == 0) {
+ list_del(&i->list);
+ spin_unlock_irq(&alloc->lock);
+ if (i->is_alloced)
+ _dpa_alloc_free(alloc, base_id, count);
+ kfree(i);
+ return;
+ }
+ spin_unlock_irq(&alloc->lock);
+ return;
+ }
+ }
+ /* Couldn't find the allocation */
+ pr_err("Attempt to free ID 0x%x COUNT %d that wasn't alloc'd or reserved\n",
+ base_id, count);
+ spin_unlock_irq(&alloc->lock);
+}
+
+/* Same as free but no previous allocation checking is needed */
+static void dpa_alloc_seed(struct dpa_alloc *alloc, u32 base_id, u32 count)
+{
+ _dpa_alloc_free(alloc, base_id, count);
+}
+
+/* Like 'new' but specifies the desired range, returns -ENOMEM if the entire
+ * desired range is not available, or 0 for success
+ */
+static int dpa_alloc_reserve(struct dpa_alloc *alloc, u32 base, u32 num)
+{
+ struct alloc_node *i = NULL, *used_node;
+
+ DPRINT("alloc_reserve(%d,%d)\n", base, num);
+ DUMP(alloc);
+
+ spin_lock_irq(&alloc->lock);
+
+ /* Check for the node in the used list.
+ If found, increase it's refcount */
+ list_for_each_entry(i, &alloc->used, list) {
+ if ((i->base == base) && (i->num == num)) {
+ ++i->refcount;
+ spin_unlock_irq(&alloc->lock);
+ return 0;
+ }
+ if ((base >= i->base) && (base < (i->base + i->num))) {
+ /* This is an attempt to reserve a region that was
+ already reserved or alloced with a different
+ base or num */
+ pr_err("Cannot reserve %d - %d, it overlaps with"
+ " existing reservation from %d - %d\n",
+ base, base + num - 1, i->base,
+ i->base + i->num - 1);
+ spin_unlock_irq(&alloc->lock);
+ return -1;
+ }
+ }
+ /* Check to make sure this ID isn't in the free list */
+ list_for_each_entry(i, &alloc->free, list) {
+ if ((base >= i->base) && (base < (i->base + i->num))) {
+ /* yep, the reservation is within this node */
+ pr_err("Cannot reserve %d - %d, it overlaps with"
+ " free range %d - %d and must be alloced\n",
+ base, base + num - 1,
+ i->base, i->base + i->num - 1);
+ spin_unlock_irq(&alloc->lock);
+ return -1;
+ }
+ }
+ /* Add the allocation to the used list with a refcount of 1 */
+ used_node = kmalloc(sizeof(*used_node), GFP_KERNEL);
+ if (!used_node) {
+ spin_unlock_irq(&alloc->lock);
+ return -ENOMEM;
+
+ }
+ used_node->base = base;
+ used_node->num = num;
+ used_node->refcount = 1;
+ used_node->is_alloced = 0;
+ list_add_tail(&used_node->list, &alloc->used);
+ spin_unlock_irq(&alloc->lock);
+ return 0;
+}
+
+/* This is a sort-of-conditional dpa_alloc_free() routine. Eg. when releasing
+ * FQIDs (probably from user-space), it can filter out those that aren't in the
+ * OOS state (better to leak a h/w resource than to crash). This function
+ * returns the number of invalid IDs that were not released. */
+static u32 release_id_range(struct dpa_alloc *alloc, u32 id, u32 count,
+ int (*is_valid)(u32 id))
+{
+ int valid_mode = 0;
+ u32 loop = id, total_invalid = 0;
+ while (loop < (id + count)) {
+ int isvalid = is_valid ? is_valid(loop) : 1;
+ if (!valid_mode) {
+ /* We're looking for a valid ID to terminate an invalid
+ * range */
+ if (isvalid) {
+ /* We finished a range of invalid IDs, a valid
+ * range is now underway */
+ valid_mode = 1;
+ count -= (loop - id);
+ id = loop;
+ } else
+ total_invalid++;
+ } else {
+ /* We're looking for an invalid ID to terminate a
+ * valid range */
+ if (!isvalid) {
+ /* Release the range of valid IDs, an unvalid
+ * range is now underway */
+ if (loop > id)
+ dpa_alloc_free(alloc, id, loop - id);
+ valid_mode = 0;
+ }
+ }
+ loop++;
+ }
+ /* Release any unterminated range of valid IDs */
+ if (valid_mode && count)
+ dpa_alloc_free(alloc, id, count);
+ return total_invalid;
+}
+
+/* Bman APIs are front-ends to the common code */
+
+#ifdef CONFIG_FSL_BMAN
+static DECLARE_DPA_ALLOC(bpalloc); /* BPID allocator */
+
+/* BPID allocator front-end */
+
+int bman_alloc_bpid_range(u32 *result, u32 count, u32 align, int partial)
+{
+ return dpa_alloc_new(&bpalloc, result, count, align, partial);
+}
+EXPORT_SYMBOL(bman_alloc_bpid_range);
+
+static int bp_cleanup(u32 bpid)
+{
+ return bman_shutdown_pool(bpid) == 0;
+}
+void bman_release_bpid_range(u32 bpid, u32 count)
+{
+ u32 total_invalid = release_id_range(&bpalloc, bpid, count, bp_cleanup);
+ if (total_invalid)
+ pr_err("BPID range [%d..%d] (%d) had %d leaks\n",
+ bpid, bpid + count - 1, count, total_invalid);
+}
+EXPORT_SYMBOL(bman_release_bpid_range);
+
+void bman_seed_bpid_range(u32 bpid, u32 count)
+{
+ dpa_alloc_seed(&bpalloc, bpid, count);
+}
+EXPORT_SYMBOL(bman_seed_bpid_range);
+
+int bman_reserve_bpid_range(u32 bpid, u32 count)
+{
+ return dpa_alloc_reserve(&bpalloc, bpid, count);
+}
+EXPORT_SYMBOL(bman_reserve_bpid_range);
+#endif /* CONFIG_FSL_BMAN */
diff --git a/drivers/soc/freescale/dpaa_sys.h b/drivers/soc/freescale/dpaa_sys.h
new file mode 100644
index 0000000..19adf70
--- /dev/null
+++ b/drivers/soc/freescale/dpaa_sys.h
@@ -0,0 +1,235 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef DPA_SYS_H
+#define DPA_SYS_H
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/dma-mapping.h>
+#include <linux/bootmem.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/kthread.h>
+#include <linux/memblock.h>
+#include <linux/completion.h>
+#include <linux/log2.h>
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/seq_file.h>
+#include <linux/device.h>
+#include <linux/smp.h>
+#include <sysdev/fsl_soc.h>
+#include <linux/fsl_hypervisor.h>
+#include <linux/vmalloc.h>
+#include <linux/ctype.h>
+#include <linux/math64.h>
+
+/* When copying aligned words or shorts, try to avoid memcpy() */
+#define CONFIG_TRY_BETTER_MEMCPY
+
+/* For 2-element tables related to cache-inhibited and cache-enabled mappings */
+#define DPA_PORTAL_CE 0
+#define DPA_PORTAL_CI 1
+
+/***********************/
+/* Misc inline assists */
+/***********************/
+
+/* TODO: NB, we currently assume that hwsync() and lwsync() imply compiler
+ * barriers and that dcb*() won't fall victim to compiler or execution
+ * reordering with respect to other code/instructions that manipulate the same
+ * cacheline. */
+#define hwsync() __asm__ __volatile__ ("sync" : : : "memory")
+#define lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : : "memory")
+#define dcbf(p) __asm__ __volatile__ ("dcbf 0,%0" : : "r" (p) : "memory")
+#define dcbt_ro(p) __asm__ __volatile__ ("dcbt 0,%0" : : "r" (p))
+#define dcbt_rw(p) __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (p))
+#define dcbi(p) dcbf(p)
+#ifdef CONFIG_PPC_E500MC
+#define dcbzl(p) __asm__ __volatile__ ("dcbzl 0,%0" : : "r" (p))
+#define dcbz_64(p) dcbzl(p)
+#define dcbf_64(p) dcbf(p)
+/* Commonly used combo */
+#define dcbit_ro(p) \
+ do { \
+ dcbi(p); \
+ dcbt_ro(p); \
+ } while (0)
+#else
+#define dcbz(p) __asm__ __volatile__ ("dcbz 0,%0" : : "r" (p))
+#define dcbz_64(p) \
+ do { \
+ dcbz((u32)p + 32); \
+ dcbz(p); \
+ } while (0)
+#define dcbf_64(p) \
+ do { \
+ dcbf((u32)p + 32); \
+ dcbf(p); \
+ } while (0)
+/* Commonly used combo */
+#define dcbit_ro(p) \
+ do { \
+ dcbi(p); \
+ dcbi((u32)p + 32); \
+ dcbt_ro(p); \
+ dcbt_ro((u32)p + 32); \
+ } while (0)
+#endif /* CONFIG_PPC_E500MC */
+
+static inline u64 mfatb(void)
+{
+ u32 hi, lo, chk;
+ do {
+ hi = mfspr(SPRN_ATBU);
+ lo = mfspr(SPRN_ATBL);
+ chk = mfspr(SPRN_ATBU);
+ } while (unlikely(hi != chk));
+ return ((u64)hi << 32) | (u64)lo;
+}
+
+#ifdef CONFIG_FSL_DPA_CHECKING
+#define DPA_ASSERT(x) \
+ do { \
+ if (!(x)) { \
+ pr_crit("ASSERT: (%s:%d) %s\n", __FILE__, __LINE__, \
+ __stringify_1(x)); \
+ dump_stack(); \
+ panic("assertion failure"); \
+ } \
+ } while (0)
+#else
+#define DPA_ASSERT(x)
+#endif
+
+/* memcpy() stuff - when you know alignments in advance */
+#ifdef CONFIG_TRY_BETTER_MEMCPY
+static inline void copy_words(void *dest, const void *src, size_t sz)
+{
+ u32 *__dest = dest;
+ const u32 *__src = src;
+ size_t __sz = sz >> 2;
+ BUG_ON((unsigned long)dest & 0x3);
+ BUG_ON((unsigned long)src & 0x3);
+ BUG_ON(sz & 0x3);
+ while (__sz--)
+ *(__dest++) = *(__src++);
+}
+static inline void copy_shorts(void *dest, const void *src, size_t sz)
+{
+ u16 *__dest = dest;
+ const u16 *__src = src;
+ size_t __sz = sz >> 1;
+ BUG_ON((unsigned long)dest & 0x1);
+ BUG_ON((unsigned long)src & 0x1);
+ BUG_ON(sz & 0x1);
+ while (__sz--)
+ *(__dest++) = *(__src++);
+}
+static inline void copy_bytes(void *dest, const void *src, size_t sz)
+{
+ u8 *__dest = dest;
+ const u8 *__src = src;
+ while (sz--)
+ *(__dest++) = *(__src++);
+}
+#else
+#define copy_words memcpy
+#define copy_shorts memcpy
+#define copy_bytes memcpy
+#endif
+
+/************/
+/* Bootargs */
+/************/
+
+/* Bman has "bportals=", they use the same syntax
+ * though; a comma-separated list of items, each item being a cpu index and/or a
+ * range of cpu indices, and each item optionally be prefixed by "s" to indicate
+ * that the portal associated with that cpu should be shared. See bman_driver.c
+ * for more specifics. */
+static int __parse_portals_cpu(const char **s, unsigned int *cpu)
+{
+ *cpu = 0;
+ if (!isdigit(**s))
+ return -EINVAL;
+ while (isdigit(**s))
+ *cpu = *cpu * 10 + (*((*s)++) - '0');
+ return 0;
+}
+static inline int parse_portals_bootarg(char *str, struct cpumask *want_shared,
+ struct cpumask *want_unshared,
+ const char *argname)
+{
+ const char *s = str;
+ unsigned int shared, cpu1, cpu2, loop;
+
+keep_going:
+ if (*s == 's') {
+ shared = 1;
+ s++;
+ } else
+ shared = 0;
+ if (__parse_portals_cpu(&s, &cpu1))
+ goto err;
+ if (*s == '-') {
+ s++;
+ if (__parse_portals_cpu(&s, &cpu2))
+ goto err;
+ if (cpu2 < cpu1)
+ goto err;
+ } else
+ cpu2 = cpu1;
+ for (loop = cpu1; loop <= cpu2; loop++)
+ cpumask_set_cpu(loop, shared ? want_shared : want_unshared);
+ if (*s == ',') {
+ s++;
+ goto keep_going;
+ } else if ((*s == '\0') || isspace(*s))
+ return 0;
+err:
+ pr_crit("Malformed %s argument: %s, offset: %lu\n", argname, str,
+ (unsigned long)s - (unsigned long)str);
+ return -EINVAL;
+}
+
+#endif /* DPA_SYS_H */
diff --git a/drivers/soc/freescale/qbman_driver.c b/drivers/soc/freescale/qbman_driver.c
new file mode 100644
index 0000000..80c2303
--- /dev/null
+++ b/drivers/soc/freescale/qbman_driver.c
@@ -0,0 +1,41 @@
+/* Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/time.h>
+#include "bman_priv.h"
+
+static __init int qbman_init(void)
+{
+ bman_init();
+
+ return 0;
+}
+subsys_initcall(qbman_init);
diff --git a/include/linux/fsl_bman.h b/include/linux/fsl_bman.h
new file mode 100644
index 0000000..d9a0dc9
--- /dev/null
+++ b/include/linux/fsl_bman.h
@@ -0,0 +1,511 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef FSL_BMAN_H
+#define FSL_BMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Last updated for v00.79 of the BG */
+
+/* Portal processing (interrupt) sources */
+#define BM_PIRQ_RCRI 0x00000002 /* RCR Ring (below threshold) */
+#define BM_PIRQ_BSCN 0x00000001 /* Buffer depletion State Change */
+
+/* This wrapper represents a bit-array for the depletion state of the 64 Bman
+ * buffer pools. */
+struct bman_depletion {
+ u32 __state[2];
+};
+#define BMAN_DEPLETION_EMPTY { { 0x00000000, 0x00000000 } }
+#define BMAN_DEPLETION_FULL { { 0xffffffff, 0xffffffff } }
+#define __bmdep_word(x) ((x) >> 5)
+#define __bmdep_shift(x) ((x) & 0x1f)
+#define __bmdep_bit(x) (0x80000000 >> __bmdep_shift(x))
+static inline void bman_depletion_init(struct bman_depletion *c)
+{
+ c->__state[0] = c->__state[1] = 0;
+}
+static inline void bman_depletion_fill(struct bman_depletion *c)
+{
+ c->__state[0] = c->__state[1] = ~0;
+}
+static inline int bman_depletion_get(const struct bman_depletion *c, u8 bpid)
+{
+ return c->__state[__bmdep_word(bpid)] & __bmdep_bit(bpid);
+}
+static inline void bman_depletion_set(struct bman_depletion *c, u8 bpid)
+{
+ c->__state[__bmdep_word(bpid)] |= __bmdep_bit(bpid);
+}
+static inline void bman_depletion_unset(struct bman_depletion *c, u8 bpid)
+{
+ c->__state[__bmdep_word(bpid)] &= ~__bmdep_bit(bpid);
+}
+
+/* ------------------------------------------------------- */
+/* --- Bman data structures (and associated constants) --- */
+
+/* Represents s/w corenet portal mapped data structures */
+struct bm_rcr_entry; /* RCR (Release Command Ring) entries */
+struct bm_mc_command; /* MC (Management Command) command */
+struct bm_mc_result; /* MC result */
+
+/* Code-reduction, define a wrapper for 48-bit buffers. In cases where a buffer
+ * pool id specific to this buffer is needed (BM_RCR_VERB_CMD_BPID_MULTI,
+ * BM_MCC_VERB_ACQUIRE), the 'bpid' field is used. */
+struct bm_buffer {
+ union {
+ struct {
+ u8 __reserved1;
+ u8 bpid;
+ u16 hi; /* High 16-bits of 48-bit address */
+ u32 lo; /* Low 32-bits of 48-bit address */
+ };
+ struct {
+ u64 __notaddress:16;
+ u64 addr:48;
+ };
+ };
+} __aligned(8);
+static inline u64 bm_buffer_get64(const struct bm_buffer *buf)
+{
+ return buf->addr;
+}
+static inline dma_addr_t bm_buf_addr(const struct bm_buffer *buf)
+{
+ return (dma_addr_t)buf->addr;
+}
+/* Macro, so we compile better if 'v' isn't always 64-bit */
+#define bm_buffer_set64(buf, v) \
+ do { \
+ struct bm_buffer *__buf931 = (buf); \
+ __buf931->hi = upper_32_bits(v); \
+ __buf931->lo = lower_32_bits(v); \
+ } while (0)
+
+/* See 1.5.3.5.4: "Release Command" */
+struct bm_rcr_entry {
+ union {
+ struct {
+ u8 __dont_write_directly__verb;
+ u8 bpid; /* used with BM_RCR_VERB_CMD_BPID_SINGLE */
+ u8 __reserved1[62];
+ };
+ struct bm_buffer bufs[8];
+ };
+} __packed;
+#define BM_RCR_VERB_VBIT 0x80
+#define BM_RCR_VERB_CMD_MASK 0x70 /* one of two values; */
+#define BM_RCR_VERB_CMD_BPID_SINGLE 0x20
+#define BM_RCR_VERB_CMD_BPID_MULTI 0x30
+#define BM_RCR_VERB_BUFCOUNT_MASK 0x0f /* values 1..8 */
+
+/* See 1.5.3.1: "Acquire Command" */
+/* See 1.5.3.2: "Query Command" */
+struct bm_mcc_acquire {
+ u8 bpid;
+ u8 __reserved1[62];
+} __packed;
+struct bm_mcc_query {
+ u8 __reserved2[63];
+} __packed;
+struct bm_mc_command {
+ u8 __dont_write_directly__verb;
+ union {
+ struct bm_mcc_acquire acquire;
+ struct bm_mcc_query query;
+ };
+} __packed;
+#define BM_MCC_VERB_VBIT 0x80
+#define BM_MCC_VERB_CMD_MASK 0x70 /* where the verb contains; */
+#define BM_MCC_VERB_CMD_ACQUIRE 0x10
+#define BM_MCC_VERB_CMD_QUERY 0x40
+#define BM_MCC_VERB_ACQUIRE_BUFCOUNT 0x0f /* values 1..8 go here */
+
+/* See 1.5.3.3: "Acquire Response" */
+/* See 1.5.3.4: "Query Response" */
+struct bm_pool_state {
+ u8 __reserved1[32];
+ /* "availability state" and "depletion state" */
+ struct {
+ u8 __reserved1[8];
+ /* Access using bman_depletion_***() */
+ struct bman_depletion state;
+ } as, ds;
+};
+struct bm_mc_result {
+ union {
+ struct {
+ u8 verb;
+ u8 __reserved1[63];
+ };
+ union {
+ struct {
+ u8 __reserved1;
+ u8 bpid;
+ u8 __reserved2[62];
+ };
+ struct bm_buffer bufs[8];
+ } acquire;
+ struct bm_pool_state query;
+ };
+} __packed;
+#define BM_MCR_VERB_VBIT 0x80
+#define BM_MCR_VERB_CMD_MASK BM_MCC_VERB_CMD_MASK
+#define BM_MCR_VERB_CMD_ACQUIRE BM_MCC_VERB_CMD_ACQUIRE
+#define BM_MCR_VERB_CMD_QUERY BM_MCC_VERB_CMD_QUERY
+#define BM_MCR_VERB_CMD_ERR_INVALID 0x60
+#define BM_MCR_VERB_CMD_ERR_ECC 0x70
+#define BM_MCR_VERB_ACQUIRE_BUFCOUNT BM_MCC_VERB_ACQUIRE_BUFCOUNT /* 0..8 */
+/* Determine the "availability state" of pool 'p' from a query result 'r' */
+#define BM_MCR_QUERY_AVAILABILITY(r, p) \
+ bman_depletion_get(&r->query.as.state, p)
+/* Determine the "depletion state" of pool 'p' from a query result 'r' */
+#define BM_MCR_QUERY_DEPLETION(r, p) \
+ bman_depletion_get(&r->query.ds.state, p)
+
+/*******************************************************************/
+/* Managed (aka "shared" or "mux/demux") portal, high-level i/face */
+/*******************************************************************/
+
+ /* Portal and Buffer Pools */
+ /* ----------------------- */
+/* Represents a managed portal */
+struct bman_portal;
+
+/* This object type represents Bman buffer pools. */
+struct bman_pool;
+
+struct bman_portal_config {
+ /* This is used for any "core-affine" portals, ie. default portals
+ * associated to the corresponding cpu. -1 implies that there is no core
+ * affinity configured. */
+ int cpu;
+ /* portal interrupt line */
+ int irq;
+ /* Is this portal shared? (If so, it has coarser locking and demuxes
+ * processing on behalf of other CPUs.) */
+ int is_shared;
+ /* These are the buffer pool IDs that may be used via this portal. */
+ struct bman_depletion mask;
+};
+
+/* This callback type is used when handling pool depletion entry/exit. The
+ * 'cb_ctx' value is the opaque value associated with the pool object in
+ * bman_new_pool(). 'depleted' is non-zero on depletion-entry, and zero on
+ * depletion-exit. */
+typedef void (*bman_cb_depletion)(struct bman_portal *bm,
+ struct bman_pool *pool, void *cb_ctx, int depleted);
+
+/* This struct specifies parameters for a bman_pool object. */
+struct bman_pool_params {
+ /* index of the buffer pool to encapsulate (0-63), ignored if
+ * BMAN_POOL_FLAG_DYNAMIC_BPID is set. */
+ u32 bpid;
+ /* bit-mask of BMAN_POOL_FLAG_*** options */
+ u32 flags;
+ /* depletion-entry/exit callback, if BMAN_POOL_FLAG_DEPLETION is set */
+ bman_cb_depletion cb;
+ /* opaque user value passed as a parameter to 'cb' */
+ void *cb_ctx;
+ /* depletion-entry/exit thresholds, if BMAN_POOL_FLAG_THRESH is set. NB:
+ * this is only allowed if BMAN_POOL_FLAG_DYNAMIC_BPID is used *and*
+ * when run in the control plane (which controls Bman CCSR). This array
+ * matches the definition of bm_pool_set(). */
+ u32 thresholds[4];
+};
+
+/* Flags to bman_new_pool() */
+#define BMAN_POOL_FLAG_NO_RELEASE 0x00000001 /* can't release to pool */
+#define BMAN_POOL_FLAG_ONLY_RELEASE 0x00000002 /* can only release to pool */
+#define BMAN_POOL_FLAG_DEPLETION 0x00000004 /* track depletion entry/exit */
+#define BMAN_POOL_FLAG_DYNAMIC_BPID 0x00000008 /* (de)allocate bpid */
+#define BMAN_POOL_FLAG_THRESH 0x00000010 /* set depletion thresholds */
+#define BMAN_POOL_FLAG_STOCKPILE 0x00000020 /* stockpile to reduce hw ops */
+
+/* Flags to bman_release() */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+#define BMAN_RELEASE_FLAG_WAIT 0x00000001 /* wait if RCR is full */
+#define BMAN_RELEASE_FLAG_WAIT_INT 0x00000002 /* if we wait, interruptible? */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+#define BMAN_RELEASE_FLAG_WAIT_SYNC 0x00000004 /* if wait, until consumed? */
+#endif
+#endif
+#define BMAN_RELEASE_FLAG_NOW 0x00000008 /* issue immediate release */
+
+/* Flags to bman_acquire() */
+#define BMAN_ACQUIRE_FLAG_STOCKPILE 0x00000001 /* no hw op, stockpile only */
+
+ /* Portal Management */
+ /* ----------------- */
+/**
+ * bman_get_portal_config - get portal configuration settings
+ *
+ * This returns a read-only view of the current cpu's affine portal settings.
+ */
+const struct bman_portal_config *bman_get_portal_config(void);
+
+/**
+ * bman_irqsource_get - return the portal work that is interrupt-driven
+ *
+ * Returns a bitmask of BM_PIRQ_**I processing sources that are currently
+ * enabled for interrupt handling on the current cpu's affine portal. These
+ * sources will trigger the portal interrupt and the interrupt handler (or a
+ * tasklet/bottom-half it defers to) will perform the corresponding processing
+ * work. The bman_poll_***() functions will only process sources that are not in
+ * this bitmask. If the current CPU is sharing a portal hosted on another CPU,
+ * this always returns zero.
+ */
+u32 bman_irqsource_get(void);
+
+/**
+ * bman_irqsource_add - add processing sources to be interrupt-driven
+ * @bits: bitmask of BM_PIRQ_**I processing sources
+ *
+ * Adds processing sources that should be interrupt-driven (rather than
+ * processed via bman_poll_***() functions). Returns zero for success, or
+ * -EINVAL if the current CPU is sharing a portal hosted on another CPU. */
+int bman_irqsource_add(u32 bits);
+
+/**
+ * bman_irqsource_remove - remove processing sources from being interrupt-driven
+ * @bits: bitmask of BM_PIRQ_**I processing sources
+ *
+ * Removes processing sources from being interrupt-driven, so that they will
+ * instead be processed via bman_poll_***() functions. Returns zero for success,
+ * or -EINVAL if the current CPU is sharing a portal hosted on another CPU. */
+int bman_irqsource_remove(u32 bits);
+
+/**
+ * bman_affine_cpus - return a mask of cpus that have affine portals
+ */
+const cpumask_t *bman_affine_cpus(void);
+
+/**
+ * bman_poll_slow - process anything that isn't interrupt-driven.
+ *
+ * This function does any portal processing that isn't interrupt-driven. If the
+ * current CPU is sharing a portal hosted on another CPU, this function will
+ * return -EINVAL, otherwise the return value is a bitmask of BM_PIRQ_* sources
+ * indicating what interrupt sources were actually processed by the call.
+ *
+ * NB, unlike the legacy wrapper bman_poll(), this function will
+ * deterministically check for the presence of portal processing work and do it,
+ * which implies some latency even if there's nothing to do. The bman_poll()
+ * wrapper on the other hand attenuates this by
+ * checking for (and doing) portal processing infrequently. Ie. such that
+ * bman_poll() can be called from core-processing loops. Use
+ * bman_poll_slow() when you yourself are deciding when to incur the overhead of
+ * processing.
+ */
+u32 bman_poll_slow(void);
+
+/**
+ * bman_poll - process anything that isn't interrupt-driven.
+ *
+ * Dispatcher logic on a cpu can use this to trigger any maintenance of the
+ * affine portal. This function does whatever processing is not triggered by
+ * interrupts. This is a legacy wrapper that can be used in core-processing
+ * loops but mitigates the performance overhead of portal processing by
+ * adaptively bypassing true portal processing most of the time. (Processing is
+ * done once every 10 calls if the previous processing revealed that work needed
+ * to be done, or once very 1000 calls if the previous processing revealed no
+ * work needed doing.) If you wish to control this yourself, call
+ * bman_poll_slow() instead, which always checks for portal processing work.
+ */
+void bman_poll(void);
+
+/**
+ * bman_rcr_is_empty - Determine if portal's RCR is empty
+ *
+ * For use in situations where a cpu-affine caller needs to determine when all
+ * releases for the local portal have been processed by Bman but can't use the
+ * BMAN_RELEASE_FLAG_WAIT_SYNC flag to do this from the final bman_release().
+ * The function forces tracking of RCR consumption (which normally doesn't
+ * happen until release processing needs to find space to put new release
+ * commands), and returns zero if the ring still has unprocessed entries,
+ * non-zero if it is empty.
+ */
+int bman_rcr_is_empty(void);
+
+/**
+ * bman_alloc_bpid_range - Allocate a contiguous range of BPIDs
+ * @result: is set by the API to the base BPID of the allocated range
+ * @count: the number of BPIDs required
+ * @align: required alignment of the allocated range
+ * @partial: non-zero if the API can return fewer than @count BPIDs
+ *
+ * Returns the number of buffer pools allocated, or a negative error code. If
+ * @partial is non zero, the allocation request may return a smaller range of
+ * BPs than requested (though alignment will be as requested). If @partial is
+ * zero, the return value will either be 'count' or negative.
+ */
+int bman_alloc_bpid_range(u32 *result, u32 count, u32 align, int partial);
+static inline int bman_alloc_bpid(u32 *result)
+{
+ int ret = bman_alloc_bpid_range(result, 1, 0, 0);
+ return (ret > 0) ? 0 : ret;
+}
+
+/**
+ * bman_release_bpid_range - Release the specified range of buffer pool IDs
+ * @bpid: the base BPID of the range to deallocate
+ * @count: the number of BPIDs in the range
+ *
+ * This function can also be used to seed the allocator with ranges of BPIDs
+ * that it can subsequently allocate from.
+ */
+void bman_release_bpid_range(u32 bpid, unsigned int count);
+static inline void bman_release_bpid(u32 bpid)
+{
+ bman_release_bpid_range(bpid, 1);
+}
+
+int bman_reserve_bpid_range(u32 bpid, unsigned int count);
+static inline int bman_reserve_bpid(u32 bpid)
+{
+ return bman_reserve_bpid_range(bpid, 1);
+}
+
+void bman_seed_bpid_range(u32 bpid, unsigned int count);
+
+
+int bman_shutdown_pool(u32 bpid);
+
+ /* Pool management */
+ /* --------------- */
+/**
+ * bman_new_pool - Allocates a Buffer Pool object
+ * @params: parameters specifying the buffer pool ID and behaviour
+ *
+ * Creates a pool object for the given @params. A portal and the depletion
+ * callback field of @params are only used if the BMAN_POOL_FLAG_DEPLETION flag
+ * is set. NB, the fields from @params are copied into the new pool object, so
+ * the structure provided by the caller can be released or reused after the
+ * function returns.
+ */
+struct bman_pool *bman_new_pool(const struct bman_pool_params *params);
+
+/**
+ * bman_free_pool - Deallocates a Buffer Pool object
+ * @pool: the pool object to release
+ *
+ */
+void bman_free_pool(struct bman_pool *pool);
+
+/**
+ * bman_get_params - Returns a pool object's parameters.
+ * @pool: the pool object
+ *
+ * The returned pointer refers to state within the pool object so must not be
+ * modified and can no longer be read once the pool object is destroyed.
+ */
+const struct bman_pool_params *bman_get_params(const struct bman_pool *pool);
+
+/**
+ * bman_release - Release buffer(s) to the buffer pool
+ * @pool: the buffer pool object to release to
+ * @bufs: an array of buffers to release
+ * @num: the number of buffers in @bufs (1-8)
+ * @flags: bit-mask of BMAN_RELEASE_FLAG_*** options
+ *
+ * Adds the given buffers to RCR entries. If the portal @p was created with the
+ * "COMPACT" flag, then it will be using a compaction algorithm to improve
+ * utilisation of RCR. As such, these buffers may join an existing ring entry
+ * and/or it may not be issued right away so as to allow future releases to join
+ * the same ring entry. Use the BMAN_RELEASE_FLAG_NOW flag to override this
+ * behaviour by committing the RCR entry (or entries) right away. If the RCR
+ * ring is full, the function will return -EBUSY unless BMAN_RELEASE_FLAG_WAIT
+ * is selected, in which case it will sleep waiting for space to become
+ * available in RCR. If the function receives a signal before such time (and
+ * BMAN_RELEASE_FLAG_WAIT_INT is set), the function returns -EINTR. Otherwise,
+ * it returns zero.
+ */
+int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num,
+ u32 flags);
+
+/**
+ * bman_acquire - Acquire buffer(s) from a buffer pool
+ * @pool: the buffer pool object to acquire from
+ * @bufs: array for storing the acquired buffers
+ * @num: the number of buffers desired (@bufs is at least this big)
+ *
+ * Issues an "Acquire" command via the portal's management command interface.
+ * The return value will be the number of buffers obtained from the pool, or a
+ * negative error code if a h/w error or pool starvation was encountered. In
+ * the latter case, the content of @bufs is undefined.
+ */
+int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num,
+ u32 flags);
+
+/**
+ * bman_flush_stockpile - Flush stockpile buffer(s) to the buffer pool
+ * @pool: the buffer pool object the stockpile belongs
+ * @flags: bit-mask of BMAN_RELEASE_FLAG_*** options
+ *
+ * Adds stockpile buffers to RCR entries until the stockpile is empty.
+ * The return value will be a negative error code if a h/w error occurred.
+ * If BMAN_RELEASE_FLAG_NOW flag is passed and RCR ring is full,
+ * -EAGAIN will be returned.
+ */
+int bman_flush_stockpile(struct bman_pool *pool, u32 flags);
+
+#ifdef CONFIG_FSL_BMAN_CONFIG
+/**
+ * bman_query_free_buffers - Query how many free buffers are in buffer pool
+ * @pool: the buffer pool object to query
+ *
+ * Return the number of the free buffers
+ */
+u32 bman_query_free_buffers(struct bman_pool *pool);
+
+/**
+ * bman_update_pool_thresholds - Change the buffer pool's depletion thresholds
+ * @pool: the buffer pool object to which the thresholds will be set
+ * @thresholds: the new thresholds
+ */
+int bman_update_pool_thresholds(struct bman_pool *pool, const u32 *thresholds);
+#endif
+
+/**
+ * The below bman_p_***() variant might be called in a situation that the cpu
+ * which the portal affine to is not online yet.
+ * @bman_portal specifies which portal the API will use.
+*/
+int bman_p_irqsource_add(struct bman_portal *p, __maybe_unused u32 bits);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FSL_BMAN_H */
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan
2015-02-16 15:46 ` [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan Emil Medve
@ 2015-02-17 0:50 ` Scott Wood
2015-02-18 17:43 ` Kumar Gala
1 sibling, 0 replies; 15+ messages in thread
From: Scott Wood @ 2015-02-17 0:50 UTC (permalink / raw)
To: Emil Medve; +Cc: Geoff Thorpe, linuxppc-dev, linux-kernel
On Mon, 2015-02-16 at 09:46 -0600, Emil Medve wrote:
> From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
>
> Change-Id: I075944acf740dbaae861104c17a9ff7247dec1be
> Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Remove Change-Id.
Provide a description of what BMan is.
> diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
> new file mode 100644
> index 0000000..63bf002
> --- /dev/null
> +++ b/drivers/soc/freescale/Kconfig
> @@ -0,0 +1,51 @@
> +menuconfig FSL_DPA
> + tristate "Freescale DPAA Buffer management"
> + depends on HAS_FSL_QBMAN
> + default y
"default y" is normally a bad idea for drivers (though it can make sense
for options within a driver).
Where is HAS_FSL_QBMAN defined (if the answer is in a later patch,
rearrange it)?
> +if FSL_DPA
> +
> +config FSL_DPA_CHECKING
> + bool "additional driver checking"
Option texts are usually capitalized.
> + default n
> + ---help---
> + Compiles in additional checks to sanity-check the drivers and any
> + use of it by other code. Not recommended for performance.
> +
> +config FSL_DPA_CAN_WAIT
> + bool
> + default y
> +config FSL_DPA_CAN_WAIT_SYNC
> + bool
> + default y
> +
> +config FSL_DPA_PIRQ_FAST
> + bool
> + default y
Use consistent whitespace.
Add help texts to these options to document them, even if they're not
user-visible.
> +config FSL_BMAN_CONFIG
> + bool "BMan device management"
> + default y
> + ---help---
> + If this linux image is running natively, you need this option. If this
> + linux image is running as a guest OS under the hypervisor, only one
> + guest OS ("the control plane") needs this option.
"the hypervisor"? I suspect this refers to the Freescale Embedded
Hypervisor (a.k.a. Topaz), rather than KVM or something else.
It would also be nice if the help text explained what the option does,
rather than just when it's needed.
> +struct bman;
Where is this struct defined?
> +union bman_ecir {
> + u32 ecir_raw;
> + struct {
> + u32 __reserved1:4;
> + u32 portal_num:4;
> + u32 __reserved2:12;
> + u32 numb:4;
> + u32 __reserved3:2;
> + u32 pid:6;
> + } __packed info;
> +};
Get rid of __packed. It causes GCC to generate terrible code with
bitfields. For that matter, consider getting rid of the bitfields.
> +#define BMAN_HWE_TXT(a, b) { .mask = BM_EIRQ_##a, .txt = b }
> +
> +static const struct bman_hwerr_txt bman_hwerr_txts[] = {
> + BMAN_HWE_TXT(IVCI, "Invalid Command Verb"),
> + BMAN_HWE_TXT(FLWI, "FBPR Low Watermark"),
> + BMAN_HWE_TXT(MBEI, "Multi-bit ECC Error"),
> + BMAN_HWE_TXT(SBEI, "Single-bit ECC Error"),
> + BMAN_HWE_TXT(BSCN, "Pool State Change Notification"),
> +};
> +#define BMAN_HWE_COUNT (sizeof(bman_hwerr_txts)/sizeof(struct bman_hwerr_txt))
Use ARRAY_SIZE(), here and elsewhere.
> +/* Add this in Kconfig */
> +#define BMAN_ERRS_TO_UNENABLE (BM_EIRQ_FLWI)
Add what to kconfig?
> +/**
> + * bm_err_isr_<reg>_<verb> - Manipulate global interrupt registers
> + * @v: for accessors that write values, this is the 32-bit value
> + *
> + * Manipulates BMAN_ERR_ISR, BMAN_ERR_IER, BMAN_ERR_ISDR, BMAN_ERR_IIR. All
> + * manipulations except bm_err_isr_[un]inhibit() use 32-bit masks composed of
> + * the BM_EIRQ_*** definitions. Note that "bm_err_isr_enable_write" means
> + * "write the enable register" rather than "enable the write register"!
> + */
> +#define bm_err_isr_status_read(bm) \
> + __bm_err_isr_read(bm, bm_isr_status)
> +#define bm_err_isr_status_clear(bm, m) \
> + __bm_err_isr_write(bm, bm_isr_status, m)
> +#define bm_err_isr_enable_read(bm) \
> + __bm_err_isr_read(bm, bm_isr_enable)
> +#define bm_err_isr_enable_write(bm, v) \
> + __bm_err_isr_write(bm, bm_isr_enable, v)
> +#define bm_err_isr_disable_read(bm) \
> + __bm_err_isr_read(bm, bm_isr_disable)
> +#define bm_err_isr_disable_write(bm, v) \
> + __bm_err_isr_write(bm, bm_isr_disable, v)
> +#define bm_err_isr_inhibit(bm) \
> + __bm_err_isr_write(bm, bm_isr_inhibit, 1)
> +#define bm_err_isr_uninhibit(bm) \
> + __bm_err_isr_write(bm, bm_isr_inhibit, 0)
Is this layer really helpful?
> +/*
> + * TODO: unimplemented registers
> + *
> + * BMAN_POOLk_SDCNT, BMAN_POOLk_HDCNT, BMAN_FULT,
> + * BMAN_VLDPL, BMAN_EECC, BMAN_SBET, BMAN_EINJ
> + */
What does it mean for registers to be unimplemented, in a piece of
software? If you mean accessors to those registers, why is that needed
if nothing uses them (yet)?
> +/* Encapsulate "struct bman *" as a cast of the register space address. */
> +
> +static struct bman *bm_create(void *regs)
> +{
> + return (struct bman *)regs;
> +}
Unnecessary cast -- and unnecessary encapsulation (especially since you
only use it once). It's also missing __iomem -- have you run sparse on
this?
> +static u32 __generate_thresh(u32 val, int roundup)
> +{
> + u32 e = 0; /* co-efficient, exponent */
> + int oddbit = 0;
> + while (val > 0xff) {
> + oddbit = val & 1;
> + val >>= 1;
> + e++;
> + if (roundup && oddbit)
> + val++;
> + }
> + DPA_ASSERT(e < 0x10);
> + return val | (e << 8);
> +}
> +
> +static void bm_set_pool(struct bman *bm, u8 pool, u32 swdet, u32 swdxt,
> + u32 hwdet, u32 hwdxt)
> +{
> + DPA_ASSERT(pool < bman_pool_max);
> + bm_out(POOL_SWDET(pool), __generate_thresh(swdet, 0));
> + bm_out(POOL_SWDXT(pool), __generate_thresh(swdxt, 1));
> + bm_out(POOL_HWDET(pool), __generate_thresh(hwdet, 0));
> + bm_out(POOL_HWDXT(pool), __generate_thresh(hwdxt, 1));
> +}
Why the underscores on __generate_thresh()? I don't see a
generate_thresh() to contrast with.
> +static void bm_set_memory(struct bman *bm, u64 ba, int prio, u32 size)
> +{
> + u32 exp = ilog2(size);
> + /* choke if size isn't within range */
> + DPA_ASSERT((size >= 4096) && (size <= 1073741824) &&
> + is_power_of_2(size));
Rewrite 1073741824 in a more readable way, such as (1024 * 1024 * 1024).
> +/*****************/
> +/* Config driver */
> +/*****************/
/*
* Linux multi-line
* Comment style is
* like this
*/
It's also not clear what the comment means. Is there a separate driver
for configuration?
> +/* We support only one of these. */
> +static struct bman *bm;
> +static struct device_node *bm_node;
> +
> +/* And this state belongs to 'bm'. It is set during fsl_bman_init(), but used
> + * during bman_init_ccsr(). */
> +static dma_addr_t fbpr_a;
> +static size_t fbpr_sz;
What state in this driver doesn't belong to bman? Why is it not in
struct bman?
I don't think the comment about being set in fsl_bman_init() is still
accurate.
> +static int bman_fbpr(struct reserved_mem *rmem)
> +{
> + fbpr_a = rmem->base;
> + fbpr_sz = rmem->size;
> +
> + WARN_ON(!(fbpr_a && fbpr_sz));
> +
> + return 0;
> +}
> +RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr);
> +
> +static int __init fsl_bman_init(struct device_node *node)
It's confusing to have both that and bman_init(). I suggest
s/fsl_bman_init/bman_init_early_one/ -- or just move the code into
bman_init_early() and get rid of the outer loop (just work with the
first fsl,bman match you find).
> +{
> + struct resource res;
> + u32 __iomem *regs;
> + int ret;
> + u16 id;
> + u8 major, minor;
> +
> + ret = of_address_to_resource(node, 0, &res);
> + if (ret) {
> + pr_err("Can't get %s property 'reg'\n",
> + node->full_name);
> + return ret;
> + }
> +
> + /* Global configuration */
> + regs = ioremap(res.start, res.end - res.start + 1);
Use of_iomap()
> + bm = bm_create(regs);
> + BUG_ON(!bm);
BUG_ON is not warranted here or (most likely) anywhere else in this
driver.
This case doesn't even warrant a WARN_ON -- it's just a bad device tree
node, or a lack of ioremap space, etc. A simple error message will
suffice.
> + bm_node = node;
> + bm_get_version(bm, &id, &major, &minor);
> + pr_info("Bman ver:%04x,%02x,%02x\n", id, major, minor);
> + if ((major == 1) && (minor == 0)) {
> + bman_ip_rev = BMAN_REV10;
> + bman_pool_max = 64;
> + } else if ((major == 2) && (minor == 0)) {
> + bman_ip_rev = BMAN_REV20;
> + bman_pool_max = 8;
> + } else if ((major == 2) && (minor == 1)) {
> + bman_ip_rev = BMAN_REV21;
> + bman_pool_max = 64;
> + } else {
> + pr_warn("unknown Bman version, default to rev1.0\n");
> + }
Default to rev1.0? Or to uninitialized values for bman_ip_rev and
bman_pool_max? You should probably just error out if you don't
recognize the version (e.g. if you didn't recognize rev 2.0, you'd have
a too-high value for bman_poool_max).
> +int bman_have_ccsr(void)
> +{
> + return bm ? 1 : 0;
> +}
Just open-code this in the one caller...
> +int bm_pool_set(u32 bpid, const u32 *thresholds)
> +{
> + if (!bm)
> + return -ENODEV;
...like you do other places that want to check.
> + bm_set_pool(bm, bpid, thresholds[0], thresholds[1],
> + thresholds[2], thresholds[3]);
> + return 0;
> +}
> +EXPORT_SYMBOL(bm_pool_set);
Please document functions exported for use outside the driver.
> +__init void bman_init_early(void)
> +{
> + struct device_node *dn;
> + int ret;
> +
> + for_each_compatible_node(dn, NULL, "fsl,bman") {
> + if (bm)
> + pr_err("%s: only one 'fsl,bman' allowed\n",
> + dn->full_name);
break; rather than indenting the rest.
> + else {
> + if (!of_device_is_available(dn))
> + continue;
> +
> + ret = fsl_bman_init(dn);
> + BUG_ON(ret);
Again, no BUG_ON.
> +static void log_edata_bits(u32 bit_count)
> +{
> + u32 i, j, mask = 0xffffffff;
> +
> + pr_warn("Bman ErrInt, EDATA:\n");
> + i = bit_count/32;
> + if (bit_count%32) {
Spaces around binary operators.
> + i++;
> + mask = ~(mask << bit_count%32);
Isn't this all a bit elaborate given there aren't any relevant memories
with non-multiple-of-32 bits?
> + }
> + j = 16-i;
> + pr_warn(" 0x%08x\n", bm_in(EDATA(j)) & mask);
> + j++;
> + for (; j < 16; j++)
> + pr_warn(" 0x%08x\n", bm_in(EDATA(j)));
DPAARM says, "When BMAN_ECSR indicates a memory that contains fewer
than 256 data bits, the data is left-justified in these registers, such
that bit 0 from the memory is always in bit 0 of BMAN_EDATA0, bit 32
from the memory is in bit 0 of BMAN_DATA1, and so on." The code appears
to assume the opposite.
Not to mention that we could just keep the software simple and dump
everything, and let the person interpreting the dump figure out which
bits are not useful.
> +}
> +
> +static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
> +{
> + union bman_ecir ecir_val;
> + union bman_eadr eadr_val;
> +
> + ecir_val.ecir_raw = bm_in(ECIR);
> + /* Is portal info valid */
> + if (ecsr_val & PORTAL_ECSR_ERR) {
> + pr_warn("Bman ErrInt: SWP id %d, numb %d, pid %d\n",
> + ecir_val.info.portal_num, ecir_val.info.numb,
> + ecir_val.info.pid);
> + }
> + if (ecsr_val & (BM_EIRQ_SBEI|BM_EIRQ_MBEI)) {
> + eadr_val.eadr_raw = bm_in(EADR);
> + pr_warn("Bman ErrInt: EADR Memory: %s, 0x%x\n",
> + error_mdata[eadr_val.info.memid].txt,
> + error_mdata[eadr_val.info.memid].addr_mask
> + & eadr_val.info.eadr);
Try not to let unexpected hardware register values lead to indexing
beyond the end of an array...
> + if (bman_hwerr_txts[i].mask & BMAN_ERRS_TO_UNENABLE) {
> + pr_devel("Bman un-enabling error 0x%x\n",
> + bman_hwerr_txts[i].mask);
s/unenable/disable/
> + bm_err_isr_status_clear(bm, isr_val);
> + return IRQ_HANDLED;
> +}
> +
> +static int __bind_irq(void)
Why the underscores?
> +{
> + int ret, err_irq;
> +
> + err_irq = of_irq_to_resource(bm_node, 0, NULL);
> + if (err_irq == NO_IRQ) {
> + pr_info("Can't get %s property '%s'\n", bm_node->full_name,
> + "interrupts");
> + return -ENODEV;
> + }
Why is "interrupts" a %s rather than embedded in the format string?
> +int bman_init_ccsr(struct device_node *node)
> +{
> + int ret;
> + if (!bman_have_ccsr())
> + return 0;
This is success? You'll print "Bman err interrupt handler present" in
this case...
> +static int of_fsl_bman_probe(struct platform_device *ofdev)
So there are three init phases of this driver? Early, subsys init, and
platform device probe? Can the latter two be combined, using deferred
probing instead of subsys init?
For that matter, I don't see anything in the early init that needs to be
early, now that the reserved mem mechanism is being used.
> +/* BTW, the drivers (and h/w programming model) already obtain the required
> + * synchronisation for portal accesses via lwsync(), hwsync(), and
> + * data-dependencies. Use of barrier()s or other order-preserving primitives
> + * simply degrade performance. Hence the use of the __raw_*() interfaces, which
> + * simply ensure that the compiler treats the portal registers as volatile (ie.
> + * non-coherent). */
s/BTW, the/The/
What does volatile have to do with non-coherence?
> +/* Cache-enabled (index) register access */
> +#define __bm_cl_touch_ro(bm, o) dcbt_ro((bm)->addr_ce + (o))
> +#define __bm_cl_touch_rw(bm, o) dcbt_rw((bm)->addr_ce + (o))
> +#define __bm_cl_in(bm, o) __raw_readl((bm)->addr_ce + (o))
> +#define __bm_cl_out(bm, o, val) \
> + do { \
> + u32 *__tmpclout = (bm)->addr_ce + (o); \
> + __raw_writel((val), __tmpclout); \
> + dcbf(__tmpclout); \
> + } while (0)
> +#define __bm_cl_invalidate(bm, o) dcbi((bm)->addr_ce + (o))
Can these be done as inline functions? What is the type of "bm"?
> +/* --------------- */
> +/* --- RCR API --- */
> +
> +/* Bit-wise logic to wrap a ring pointer by clearing the "carry bit" */
> +#define RCR_CARRYCLEAR(p) \
> + (void *)((unsigned long)(p) & (~(unsigned long)(BM_RCR_SIZE << 6)))
> +
> +/* Bit-wise logic to convert a ring pointer to a ring index */
> +static inline u8 RCR_PTR2IDX(struct bm_rcr_entry *e)
> +{
> + return ((uintptr_t)e >> 6) & (BM_RCR_SIZE - 1);
> +}
Why u8?
Can you replace 6 with a symbolic constant?
Don't put function names in ALLCAPS.
> +/* Increment the 'cursor' ring pointer, taking 'vbit' into account */
> +static inline void RCR_INC(struct bm_rcr *rcr)
> +{
> + /* NB: this is odd-looking, but experiments show that it generates
> + * fast code with essentially no branching overheads. We increment to
> + * the next RCR pointer and handle overflow and 'vbit'. */
> + struct bm_rcr_entry *partial = rcr->cursor + 1;
> + rcr->cursor = RCR_CARRYCLEAR(partial);
> + if (partial != rcr->cursor)
> + rcr->vbit ^= BM_RCR_VERB_VBIT;
> +}
> +
> +static inline int bm_rcr_init(struct bm_portal *portal, enum bm_rcr_pmode pmode,
> + __maybe_unused enum bm_rcr_cmode cmode)
You don't need __maybe_unused on function arguments.
> +{
> + /* This use of 'register', as well as all other occurrences, is because
> + * it has been observed to generate much faster code with gcc than is
> + * otherwise the case. */
> + register struct bm_rcr *rcr = &portal->rcr;
It's a bit sad if GCC can't figure out to use a register in a case like
this... Is this still true of recent GCC versions? Does it even matter
in an init function?
> +static inline void bm_rcr_finish(struct bm_portal *portal)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + u8 pi = bm_in(RCR_PI_CINH) & (BM_RCR_SIZE - 1);
> + u8 ci = bm_in(RCR_CI_CINH) & (BM_RCR_SIZE - 1);
> + DPA_ASSERT(!rcr->busy);
> + if (pi != RCR_PTR2IDX(rcr->cursor))
> + pr_crit("losing uncommited RCR entries\n");
> + if (ci != rcr->ci)
> + pr_crit("missing existing RCR completions\n");
> + if (rcr->ci != RCR_PTR2IDX(rcr->cursor))
> + pr_crit("RCR destroyed unquiesced\n");
> +}
Can you use dev_crit instead? These messages have no context...
> +static inline struct bm_rcr_entry *bm_rcr_start(struct bm_portal *portal)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + DPA_ASSERT(!rcr->busy);
> + if (!rcr->available)
> + return NULL;
> +#ifdef CONFIG_FSL_DPA_CHECKING
> + rcr->busy = 1;
> +#endif
> + dcbz_64(rcr->cursor);
> + return rcr->cursor;
> +}
> +
> +static inline void bm_rcr_abort(struct bm_portal *portal)
> +{
> + __maybe_unused register struct bm_rcr *rcr = &portal->rcr;
> + DPA_ASSERT(rcr->busy);
> +#ifdef CONFIG_FSL_DPA_CHECKING
> + rcr->busy = 0;
> +#endif
Does it make sense to check rcr->busy if CONFIG_FSL_DPA_CHECKING is not
defined? It might be harmless if the lack of checking makes DPA_ASSERT
a no-op, but it's awkward, especially with the __maybe_used...
You could also have inline functions to set/clear busy based on
CONFIG_FSL_DPA_CHECKING, with something like "(void)rcr;" in the
non-checking case, so that only the inline functions have to care about
the ifdefs.
> struct bm_portal *portal)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + return rcr->ithresh;
> +}
> +
> +static inline void bm_rcr_set_ithresh(struct bm_portal *portal, u8 ithresh)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + rcr->ithresh = ithresh;
> + bm_out(RCR_ITR, ithresh);
> +}
> +
> +static inline u8 bm_rcr_get_avail(struct bm_portal *portal)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + return rcr->available;
> +}
> +
> +static inline u8 bm_rcr_get_fill(struct bm_portal *portal)
> +{
> + register struct bm_rcr *rcr = &portal->rcr;
> + return BM_RCR_SIZE - 1 - rcr->available;
> +}
I really doubt that even these functions benefit from "register"...
Likewise, I see way too many "inline"s.
> +struct bman_portal {
> + struct bm_portal p;
Having both bman_portal and bm_portal is confusing.
> + /* 2-element array. pools[0] is mask, pools[1] is snapshot. */
> + struct bman_depletion *pools;
Symbolic names for 0/1? Is there a benefit to using an array here?
> + int thresh_set;
> + unsigned long irq_sources;
> + u32 slowpoll; /* only used when interrupts are off */
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
> + struct bman_pool *rcri_owned; /* only 1 release WAIT_SYNC at a time */
> +#endif
Please try to sort structs to reduce obvious padding.
> +#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
> + raw_spinlock_t sharing_lock; /* only used if is_shared */
> + int is_shared;
> + struct bman_portal *sharing_redirect;
> +#endif
> + /* When the cpu-affine portal is activated, this is non-NULL */
> + const struct bm_portal_config *config;
> + /* 64-entry hash-table of pool objects that are tracking depletion
> + * entry/exit (ie. BMAN_POOL_FLAG_DEPLETION). This isn't fast-path, so
> + * we're not fussy about cache-misses and so forth - whereas the above
> + * members should all fit in one cacheline.
> + * BTW, with 64 entries in the hash table and 64 buffer pools to track,
> + * you'll never guess the hash-function ... */
> + struct bman_pool *cb[64];
Symbolic constant for 64?
If this driver is assuming at most 64 buffer pools, is this checked
anywhere (e.g. if someone were to modify the version checking code in
the future, without auditing the rest of the driver)?
> + /* Track if the portal was alloced by the driver */
> + u8 alloced;
bool?
> +#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
> +static inline struct bman_portal *get_affine_portal(void)
> +{
> + struct bman_portal *p = get_raw_affine_portal();
> + if (p->sharing_redirect)
> + return p->sharing_redirect;
> + return p;
> +}
Some documentation on sharing_redirect would be nice.
> +static inline void put_affine_portal(void)
> +{
> + put_cpu_var(bman_affine_portal);
> +}
> +static inline struct bman_portal *get_poll_portal(void)
> +{
> + return this_cpu_ptr(&bman_affine_portal);
> +}
> +#define put_poll_portal()
static inline void put_poll_portal(void)
{
}
Is this expected to become non-empty in the future? How do we have
confidence that the put_poll_portal() calls are correct if it never does
anything?
> +
> +/* GOTCHA: this object type refers to a pool, it isn't *the* pool. There may be
> + * more than one such object per Bman buffer pool, eg. if different users of the
> + * pool are operating via different portals. */
> +struct bman_pool {
So maybe call it bman_pool_ref or similar?
> +/* (De)Registration of depletion notification callbacks */
> +static void depletion_link(struct bman_portal *portal, struct bman_pool *pool)
> +{
> + __maybe_unused unsigned long irqflags;
Have PORTAL_IRQ_LOCK unconditionally consume irqflags (by casting to
void) instead of having callers use __maybe_unused.
> +static void depletion_unlink(struct bman_pool *pool)
> +{
> + struct bman_pool *it, *last = NULL;
> + struct bman_pool **base = &pool->portal->cb[pool->params.bpid];
> + __maybe_unused unsigned long irqflags;
> + PORTAL_IRQ_LOCK(pool->portal, irqflags);
> + it = *base; /* <-- gotcha, don't do this prior to the irq_save */
> + while (it != pool) {
> + last = it;
> + it = it->next;
> + }
How long can this list be?
> +/* In the case that the application's core loop calls
> + * bman_poll(), we ought to balance how often we incur the overheads of the
> + * slow-path poll. We'll use two decrementer sources. The idle decrementer
> + * constant is used when the last slow-poll detected no work to do, and the busy
> + * decrementer constant when the last slow-poll had work to do. */
> +#define SLOW_POLL_IDLE 1000
> +#define SLOW_POLL_BUSY 10
> +static u32 __poll_portal_slow(struct bman_portal *p, u32 is);
Why underscores? Likewise elsewhere where it doesn't distinguish from a
non-underscore version.
Why the forward declaration instead of reordering?
> +
> +/* Portal interrupt handler */
> +static irqreturn_t portal_isr(__always_unused int irq, void *ptr)
> +{
> + struct bman_portal *p = ptr;
> + u32 clear = p->irq_sources;
> + u32 is = bm_isr_status_read(&p->p) & p->irq_sources;
> + clear |= __poll_portal_slow(p, is);
> + bm_isr_status_clear(&p->p, clear);
> + return IRQ_HANDLED;
> +}
Don't return IRQ_HANDLED unless something was actually handled.
> +struct bman_portal *bman_create_portal(
> + struct bman_portal *portal,
> + const struct bm_portal_config *config)
> +{
> + struct bm_portal *__p;
Why the underscores?
> + if (!portal) {
> + portal = kmalloc(sizeof(*portal), GFP_KERNEL);
> + if (!portal)
> + return portal;
s/return portal/return NULL/
> +/* When release logic waits on available RCR space, we need a global waitqueue
> + * in the case of "affine" use (as the waits wake on different cpus which means
> + * different portals - so we can't wait on any per-portal waitqueue). */
> +static DECLARE_WAIT_QUEUE_HEAD(affine_queue);
> +
> +static u32 __poll_portal_slow(struct bman_portal *p, u32 is)
> +{
> + struct bman_depletion tmp;
This could use a better name.
> + u32 ret = is;
What is "is"?
(I'm assuming "interrupt status", but please use a more normal name for
that).
> + PORTAL_IRQ_LOCK(p, irqflags);
> + bm_mc_start(&p->p);
> + bm_mc_commit(&p->p, BM_MCC_VERB_CMD_QUERY);
> + while (!(mcr = bm_mc_result(&p->p)))
> + cpu_relax();
> + tmp = mcr->query.ds.state;
> + PORTAL_IRQ_UNLOCK(p, irqflags);
How long can that loop take? No timeout?
> + for (i = 0; i < 2; i++) {
ARRAY_SIZE()?
> + int idx = i * 32;
> + /* tmp is a mask of currently-depleted pools.
> + * pools[0] is mask of those we care about.
> + * pools[1] is our previous view (we only want to
> + * be told about changes). */
> + tmp.__state[i] &= p->pools[0].__state[i];
> + if (tmp.__state[i] == p->pools[1].__state[i])
Why do struct members have leading underscores?
> + /* fast-path, nothing to see, move along */
> + continue;
> + for (j = 0; j <= 31; j++, idx++) {
Symbolic constant for 31?
> + struct bman_pool *pool = p->cb[idx];
> + int b4 = bman_depletion_get(&p->pools[1], idx);
> + int af = bman_depletion_get(&tmp, idx);
> + if (b4 == af)
> + continue;
b4? af? srsly?
For a second I thought I was looking at hex numbers. :-P
> +const cpumask_t *bman_affine_cpus(void)
> +{
> + return &affine_mask;
> +}
> +EXPORT_SYMBOL(bman_affine_cpus);
Why not just export affine_mask?
> + ret = (u32)-1;
:-(
> +/* Legacy wrapper */
Legacy? From what?
> +static inline struct bm_rcr_entry *try_rel_start(struct bman_portal **p,
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT
> + __maybe_unused struct bman_pool *pool,
> +#endif
Please don't put ifdefs in the middle of an argument list.
> + __maybe_unused unsigned long *irqflags,
> + __maybe_unused u32 flags)
> +{
> + struct bm_rcr_entry *r;
> + u8 avail;
> +
> + *p = get_affine_portal();
> + PORTAL_IRQ_LOCK(*p, (*irqflags));
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
> + if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
> + (flags & BMAN_RELEASE_FLAG_WAIT_SYNC))) {
> + if ((*p)->rcri_owned) {
> + PORTAL_IRQ_UNLOCK(*p, (*irqflags));
> + put_affine_portal();
> + return NULL;
> + }
> + (*p)->rcri_owned = pool;
> + }
> +#endif
> + avail = bm_rcr_get_avail(&(*p)->p);
> + if (avail < 2)
> + update_rcr_ci(*p, avail);
> + r = bm_rcr_start(&(*p)->p);
> + if (unlikely(!r)) {
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
> + if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
> + (flags & BMAN_RELEASE_FLAG_WAIT_SYNC)))
> + (*p)->rcri_owned = NULL;
> +#endif
> + PORTAL_IRQ_UNLOCK(*p, (*irqflags));
> + put_affine_portal();
> + }
> + return r;
> +}
Where does the unlock happen in the "likely" case that r != NULL?
> +/* to facilitate better copying of bufs into the ring without either (a) copying
> + * noise into the first byte (prematurely triggering the command), nor (b) being
> + * very inefficient by copying small fields using read-modify-write */
> +struct overlay_bm_buffer {
> + u32 first;
> + u32 second;
> +};
This ought to be a hint that the bitfields should go away.
> +static inline int __bman_release(struct bman_pool *pool,
> + const struct bm_buffer *bufs, u8 num, u32 flags)
> +{
> + struct bman_portal *p;
> + struct bm_rcr_entry *r;
> + struct overlay_bm_buffer *o_dest;
> + struct overlay_bm_buffer *o_src = (struct overlay_bm_buffer *)&bufs[0];
> + __maybe_unused unsigned long irqflags;
> + u32 i = num - 1;
> +
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT
> + if (flags & BMAN_RELEASE_FLAG_WAIT)
> + r = wait_rel_start(&p, pool, &irqflags, flags);
> + else
> + r = try_rel_start(&p, pool, &irqflags, flags);
> +#else
> + r = try_rel_start(&p, &irqflags, flags);
> +#endif
> + if (!r)
> + return -EBUSY;
> + /* We can copy all but the first entry, as this can trigger badness
> + * with the valid-bit. Use the overlay to mask the verb byte. */
> + o_dest = (struct overlay_bm_buffer *)&r->bufs[0];
> + o_dest->first = (o_src->first & 0x0000ffff) |
> + (((u32)pool->params.bpid << 16) & 0x00ff0000);
> + o_dest->second = o_src->second;
> + if (i)
> + copy_words(&r->bufs[1], &bufs[1], i * sizeof(bufs[0]));
> + bm_rcr_pvb_commit(&p->p, BM_RCR_VERB_CMD_BPID_SINGLE |
> + (num & BM_RCR_VERB_BUFCOUNT_MASK));
> +#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
> + /* if we wish to sync we need to set the threshold after h/w sees the
> + * new ring entry. As we're mixing cache-enabled and cache-inhibited
> + * accesses, this requires a heavy-weight sync. */
> + if (unlikely((flags & BMAN_RELEASE_FLAG_WAIT) &&
> + (flags & BMAN_RELEASE_FLAG_WAIT_SYNC))) {
> + hwsync();
> + bm_rcr_set_ithresh(&p->p, 1);
> + }
> +#endif
> + PORTAL_IRQ_UNLOCK(p, irqflags);
Where was the lock acquired?
> +int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num,
> + u32 flags)
> +{
> + int ret = 0;
> +#ifdef CONFIG_FSL_DPA_CHECKING
> + if (!num || (num > 8))
> + return -EINVAL;
> + if (pool->params.flags & BMAN_POOL_FLAG_NO_RELEASE)
> + return -EINVAL;
> +#endif
> + /* Without stockpile, this API is a pass-through to the h/w operation */
> + if (!(pool->params.flags & BMAN_POOL_FLAG_STOCKPILE))
> + return __bman_release(pool, bufs, num, flags);
> +#ifdef CONFIG_FSL_DPA_CHECKING
> + if (!atomic_dec_and_test(&pool->in_use)) {
> + pr_crit("Parallel attempts to enter bman_released() detected.");
> + panic("only one instance of bman_released/acquired allowed");
> + }
panic() is even worse than BUG_ON(). WARN_ON and return would be
appropriate here.
s/bman_released/bman_release/
> +static inline int __bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs,
> + u8 num)
> +{
> + struct bman_portal *p = get_affine_portal();
> + struct bm_mc_command *mcc;
> + struct bm_mc_result *mcr;
> + __maybe_unused unsigned long irqflags;
> + int ret;
> +
> + PORTAL_IRQ_LOCK(p, irqflags);
> + mcc = bm_mc_start(&p->p);
> + mcc->acquire.bpid = pool->params.bpid;
> + bm_mc_commit(&p->p, BM_MCC_VERB_CMD_ACQUIRE |
> + (num & BM_MCC_VERB_ACQUIRE_BUFCOUNT));
> + while (!(mcr = bm_mc_result(&p->p)))
> + cpu_relax();
> + ret = mcr->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT;
> + if (bufs)
> + copy_words(&bufs[0], &mcr->acquire.bufs[0],
> + num * sizeof(bufs[0]));
> + PORTAL_IRQ_UNLOCK(p, irqflags);
Again, how long will this take, loop timeout, etc.
> +/* After initialising cpus that own shared portal configs,
If they're shared why is there an owning cpu?
> we cache the
> + * resulting portals (ie. not just the configs) in this array. Then we
> + * initialise slave cpus that don't have their own portals, redirecting them to
> + * portals from this cache in a round-robin assignment. */
>
> +static struct bman_portal *shared_portals[NR_CPUS] __initdata;
> +static int num_shared_portals __initdata;
> +static int shared_portals_idx __initdata;
> +static struct list_head unused_pcfgs __initdata = LIST_HEAD_INIT(unused_pcfgs);
> +
> +static void *affine_bportals[NR_CPUS];
> +
> +static struct bm_portal_config * __init parse_pcfg(struct device_node *node)
> +{
> + struct bm_portal_config *pcfg;
> + int irq, ret;
> +
> + pcfg = kmalloc(sizeof(*pcfg), GFP_KERNEL);
> + if (!pcfg) {
> + pr_err("can't allocate portal config");
> + return NULL;
> + }
> +
> + if (of_device_is_compatible(node, "fsl,bman-portal-1.0") ||
> + of_device_is_compatible(node, "fsl,bman-portal-1.0.0")) {
> + bman_ip_rev = BMAN_REV10;
> + bman_pool_max = 64;
> + } else if (of_device_is_compatible(node, "fsl,bman-portal-2.0") ||
> + of_device_is_compatible(node, "fsl,bman-portal-2.0.8")) {
> + bman_ip_rev = BMAN_REV20;
> + bman_pool_max = 8;
> + } else if (of_device_is_compatible(node, "fsl,bman-portal-2.1.0") ||
> + of_device_is_compatible(node, "fsl,bman-portal-2.1.1") ||
> + of_device_is_compatible(node, "fsl,bman-portal-2.1.2") ||
> + of_device_is_compatible(node, "fsl,bman-portal-2.1.3")) {
> + bman_ip_rev = BMAN_REV21;
> + bman_pool_max = 64;
> + }
Is this to deal with VMs that have portals but no bman node?
> + irq = irq_of_parse_and_map(node, 0);
> + if (irq == NO_IRQ) {
Don't use NO_IRQ. An open-coded value of zero indicates the absence of
an IRQ.
> +static struct bman_portal * __init init_pcfg(struct bm_portal_config *pcfg)
> +{
> + struct bman_portal *p = bman_create_affine_portal(pcfg);
> +
> + if (p) {
> +#ifdef CONFIG_FSL_DPA_PIRQ_SLOW
> + bman_p_irqsource_add(p, BM_PIRQ_RCRI | BM_PIRQ_BSCN);
> +#endif
> + pr_info("Bman portal %s initialised, cpu %d\n",
> + pcfg->public_cfg.is_shared ? "(shared) " : "",
> + pcfg->public_cfg.cpu);
This seems a bit verbose given the number of portals.
> +int __init bman_init(void)
> +{
> + struct cpumask slave_cpus;
> + struct cpumask unshared_cpus = *cpu_none_mask;
> + struct cpumask shared_cpus = *cpu_none_mask;
> + LIST_HEAD(unshared_pcfgs);
> + LIST_HEAD(shared_pcfgs);
> + struct device_node *dn;
> + struct bm_portal_config *pcfg;
> + struct bman_portal *p;
> + int cpu;
> + struct cpumask offline_cpus;
> +
> + /* Initialise the Bman (CCSR) device */
> + for_each_compatible_node(dn, NULL, "fsl,bman") {
> + if (!bman_init_ccsr(dn))
> + pr_info("Bman err interrupt handler present\n");
> + else
> + pr_err("Bman CCSR setup failed\n");
> + }
Shouldn't you abort on an error here?
And the message on success is a bit weird given the function name (also
too verbose) and the else message.
> +extern u16 bman_ip_rev; /* 0 if uninitialised, otherwise BMAN_REVx */
All global/static variables are 0 if uninitialized.
> +struct bm_portal_config {
> + /* Corenet portal addresses;
> + * [0]==cache-enabled, [1]==cache-inhibited. */
> + __iomem void *addr_virt[2];
Usually __iomem goes after the "void".
Any reason for this to be an array?
> + struct resource addr_phys[2];
Why do you need the physical address? Can you use of_ioremap() instead?
> +#ifdef CONFIG_FSL_BMAN_CONFIG
> +/* Hooks from bman_driver.c to bman_config.c */
> +int bman_init_ccsr(struct device_node *node);
> +#endif
> +
> +/* Hooks from bman_driver.c in to bman_high.c */
Document what functions do, not which files call or implement them (grep
can answer that, and the info will stay up to date).
> +/* Pool logic in the portal driver, during initialisation, needs to know if
> + * there's access to CCSR or not (if not, it'll cripple the pool allocator). */
> +#ifdef CONFIG_FSL_BMAN_CONFIG
> +int bman_have_ccsr(void);
> +#else
> +#define bman_have_ccsr() 0
> +#endif
static inline -- or just let the address stay NULL and test that.
> +/* This interface is needed in a few places and though it's not specific to
> + * USDPAA as such, creating a new header for it doesn't make any sense. The
> + * qbman kernel driver implements this interface and uses it as the backend for
> + * both the FQID and BPID allocators. The fsl_usdpaa driver also uses this
> + * interface for tracking per-process allocations handed out to user-space
> + */
I don't see an fsl_usdpaa driver in this patchset. Is that coming
later, or is this a reference to something that won't go upstream any
time soon?
> +struct dpa_alloc {
> + struct list_head free;
> + spinlock_t lock;
> + struct list_head used;
> +};
> +
> +#define DECLARE_DPA_ALLOC(name) \
> + struct dpa_alloc name = { \
> + .free = { \
> + .prev = &name.free, \
> + .next = &name.free \
> + }, \
> + .lock = __SPIN_LOCK_UNLOCKED(name.lock), \
> + .used = { \
> + .prev = &name.used, \
> + .next = &name.used \
> + } \
> + }
> +
> +/* The allocator is a (possibly-empty) list of these */
> +struct alloc_node {
> + struct list_head list;
> + u32 base;
> + u32 num;
> + /* refcount and is_alloced are only set
> + when the node is in the used list */
> + unsigned int refcount;
> + int is_alloced;
> +};
Is there any reason why lib/genalloc.c couldn't be used?
> +/* When copying aligned words or shorts, try to avoid memcpy() */
> +#define CONFIG_TRY_BETTER_MEMCPY
Hmm?
> +/***********************/
> +/* Misc inline assists */
> +/***********************/
> +
> +/* TODO: NB, we currently assume that hwsync() and lwsync() imply compiler
> + * barriers and that dcb*() won't fall victim to compiler or execution
> + * reordering with respect to other code/instructions that manipulate the same
> + * cacheline. */
If you don't want dcb* to be reordered relative to memory accesses, use
a memory clobber.
> +#define hwsync() __asm__ __volatile__ ("sync" : : : "memory")
> +#define lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : : "memory")
> +#define dcbf(p) __asm__ __volatile__ ("dcbf 0,%0" : : "r" (p) : "memory")
> +#define dcbt_ro(p) __asm__ __volatile__ ("dcbt 0,%0" : : "r" (p))
> +#define dcbt_rw(p) __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (p))
> +#define dcbi(p) dcbf(p)
> +#ifdef CONFIG_PPC_E500MC
> +#define dcbzl(p) __asm__ __volatile__ ("dcbzl 0,%0" : : "r" (p))
> +#define dcbz_64(p) dcbzl(p)
> +#define dcbf_64(p) dcbf(p)
> +/* Commonly used combo */
> +#define dcbit_ro(p) \
> + do { \
> + dcbi(p); \
> + dcbt_ro(p); \
> + } while (0)
> +#else
> +#define dcbz(p) __asm__ __volatile__ ("dcbz 0,%0" : : "r" (p))
> +#define dcbz_64(p) \
> + do { \
> + dcbz((u32)p + 32); \
> + dcbz(p); \
> + } while (0)
> +#define dcbf_64(p) \
> + do { \
> + dcbf((u32)p + 32); \
> + dcbf(p); \
> + } while (0)
> +/* Commonly used combo */
> +#define dcbit_ro(p) \
> + do { \
> + dcbi(p); \
> + dcbi((u32)p + 32); \
> + dcbt_ro(p); \
> + dcbt_ro((u32)p + 32); \
> + } while (0)
> +#endif /* CONFIG_PPC_E500MC */
This is not the place for such defines. Put it in a common PPC header.
> +static inline u64 mfatb(void)
> +{
> + u32 hi, lo, chk;
> + do {
> + hi = mfspr(SPRN_ATBU);
> + lo = mfspr(SPRN_ATBL);
> + chk = mfspr(SPRN_ATBU);
> + } while (unlikely(hi != chk));
> + return ((u64)hi << 32) | (u64)lo;
> +}
Why do you need the ATB?
> +#ifdef CONFIG_FSL_DPA_CHECKING
> +#define DPA_ASSERT(x) \
> + do { \
> + if (!(x)) { \
> + pr_crit("ASSERT: (%s:%d) %s\n", __FILE__, __LINE__, \
> + __stringify_1(x)); \
> + dump_stack(); \
> + panic("assertion failure"); \
WARN_ON
> + } \
> + } while (0)
> +#else
> +#define DPA_ASSERT(x)
#define DPA_ASSERT(x) do { (void)(x); } while (0)
or,
static inline void DPA_ASSERT(bool x)
{
}
> +/* memcpy() stuff - when you know alignments in advance */
> +#ifdef CONFIG_TRY_BETTER_MEMCPY
> +static inline void copy_words(void *dest, const void *src, size_t sz)
> +{
> + u32 *__dest = dest;
> + const u32 *__src = src;
> + size_t __sz = sz >> 2;
> + BUG_ON((unsigned long)dest & 0x3);
> + BUG_ON((unsigned long)src & 0x3);
> + BUG_ON(sz & 0x3);
> + while (__sz--)
> + *(__dest++) = *(__src++);
> +}
> +static inline void copy_shorts(void *dest, const void *src, size_t sz)
> +{
> + u16 *__dest = dest;
> + const u16 *__src = src;
> + size_t __sz = sz >> 1;
> + BUG_ON((unsigned long)dest & 0x1);
> + BUG_ON((unsigned long)src & 0x1);
> + BUG_ON(sz & 0x1);
> + while (__sz--)
> + *(__dest++) = *(__src++);
> +}
Doesn't PPC memcpy already check for alignment?
And if it didn't, this wouldn't be the right place to try to implement
something better.
> +static inline void copy_bytes(void *dest, const void *src, size_t sz)
> +{
> + u8 *__dest = dest;
> + const u8 *__src = src;
> + while (sz--)
> + *(__dest++) = *(__src++);
> +}
What does this accomplish beyond plain memcpy()?
> +/************/
> +/* Bootargs */
> +/************/
> +
> +/* Bman has "bportals=", they use the same syntax
> + * though; a comma-separated list of items, each item being a cpu index and/or a
> + * range of cpu indices, and each item optionally be prefixed by "s" to indicate
> + * that the portal associated with that cpu should be shared. See bman_driver.c
> + * for more specifics. */
> +static int __parse_portals_cpu(const char **s, unsigned int *cpu)
> +{
> + *cpu = 0;
> + if (!isdigit(**s))
> + return -EINVAL;
> + while (isdigit(**s))
> + *cpu = *cpu * 10 + (*((*s)++) - '0');
> + return 0;
> +}
What does this do that kstrtoull() doesn't?
> +/* Last updated for v00.79 of the BG */
Don't leave comments in the code making cryptic references to internal
documents... and check that this is still correct based on the final,
published documentation.
> +static inline int bman_depletion_get(const struct bman_depletion *c, u8 bpid)
> +{
> + return c->__state[__bmdep_word(bpid)] & __bmdep_bit(bpid);
> +}
> +static inline void bman_depletion_set(struct bman_depletion *c, u8 bpid)
> +{
> + c->__state[__bmdep_word(bpid)] |= __bmdep_bit(bpid);
> +}
> +static inline void bman_depletion_unset(struct bman_depletion *c, u8 bpid)
> +{
> + c->__state[__bmdep_word(bpid)] &= ~__bmdep_bit(bpid);
> +}
What do these do that test_bit, __set_bit, and __clear_bit don't?
-Scott
^ permalink raw reply [flat|nested] 15+ messages in thread* Re: [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan
2015-02-16 15:46 ` [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan Emil Medve
2015-02-17 0:50 ` Scott Wood
@ 2015-02-18 17:43 ` Kumar Gala
2015-02-18 17:59 ` Emil Medve
1 sibling, 1 reply; 15+ messages in thread
From: Kumar Gala @ 2015-02-18 17:43 UTC (permalink / raw)
To: Emil Medve; +Cc: Geoff Thorpe, linuxppc-dev, linux-kernel
On Feb 16, 2015, at 9:46 AM, Emil Medve <Emilian.Medve@freescale.com> =
wrote:
> From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
>=20
> Change-Id: I075944acf740dbaae861104c17a9ff7247dec1be
> Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
> ---
> drivers/soc/Kconfig | 1 +
> drivers/soc/Makefile | 1 +
> drivers/soc/freescale/Kconfig | 51 ++
> drivers/soc/freescale/Makefile | 7 +
> drivers/soc/freescale/bman.c | 611 ++++++++++++++++++++
> drivers/soc/freescale/bman.h | 524 +++++++++++++++++
> drivers/soc/freescale/bman_api.c | 1033 =
++++++++++++++++++++++++++++++++++
> drivers/soc/freescale/bman_portal.c | 330 +++++++++++
> drivers/soc/freescale/bman_priv.h | 149 +++++
> drivers/soc/freescale/dpaa_alloc.c | 404 +++++++++++++
> drivers/soc/freescale/dpaa_sys.h | 235 ++++++++
> drivers/soc/freescale/qbman_driver.c | 41 ++
> include/linux/fsl_bman.h | 511 +++++++++++++++++
If you are using drivers/soc than the include should probably be =
include/soc/freescale/
Also, any reason you guys aren=92t using drivers/soc/fsl ?
- k=
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan
2015-02-18 17:43 ` Kumar Gala
@ 2015-02-18 17:59 ` Emil Medve
0 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-18 17:59 UTC (permalink / raw)
To: Kumar Gala; +Cc: Geoff Thorpe, linuxppc-dev, linux-kernel
Hello Kumar,
Thanks for taking the time to review this
On 02/18/2015 11:43 AM, Kumar Gala wrote:
> On Feb 16, 2015, at 9:46 AM, Emil Medve <Emilian.Medve@freescale.com> wrote:
>
>> From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
>>
>> Change-Id: I075944acf740dbaae861104c17a9ff7247dec1be
>> Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
>> ---
>> drivers/soc/Kconfig | 1 +
>> drivers/soc/Makefile | 1 +
>> drivers/soc/freescale/Kconfig | 51 ++
>> drivers/soc/freescale/Makefile | 7 +
>> drivers/soc/freescale/bman.c | 611 ++++++++++++++++++++
>> drivers/soc/freescale/bman.h | 524 +++++++++++++++++
>> drivers/soc/freescale/bman_api.c | 1033 ++++++++++++++++++++++++++++++++++
>> drivers/soc/freescale/bman_portal.c | 330 +++++++++++
>> drivers/soc/freescale/bman_priv.h | 149 +++++
>> drivers/soc/freescale/dpaa_alloc.c | 404 +++++++++++++
>> drivers/soc/freescale/dpaa_sys.h | 235 ++++++++
>> drivers/soc/freescale/qbman_driver.c | 41 ++
>> include/linux/fsl_bman.h | 511 +++++++++++++++++
>
> If you are using drivers/soc than the include should probably be include/soc/freescale/
Will move/rename
> Also, any reason you guys aren’t using drivers/soc/fsl ?
Will rename
Cheers,
^ permalink raw reply [flat|nested] 15+ messages in thread
* [RFC v2 02/10] fsl_qman: Add drivers for the Freescale DPAA QMan
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
2015-02-16 15:46 ` [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 03/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA BMan Emil Medve
` (8 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I075944acf740dbaae861104c17a9ff7247dec1be
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/freescale/Kconfig | 74 +-
drivers/soc/freescale/Makefile | 4 +
drivers/soc/freescale/bman_api.c | 5 +-
drivers/soc/freescale/dpaa_alloc.c | 169 +++
drivers/soc/freescale/dpaa_sys.h | 60 +-
drivers/soc/freescale/qbman_driver.c | 44 +
drivers/soc/freescale/qman.c | 991 +++++++++++++
drivers/soc/freescale/qman.h | 1302 +++++++++++++++++
drivers/soc/freescale/qman_api.c | 2566 ++++++++++++++++++++++++++++++++++
drivers/soc/freescale/qman_portal.c | 503 +++++++
drivers/soc/freescale/qman_priv.h | 275 ++++
drivers/soc/freescale/qman_utils.c | 129 ++
include/linux/fsl_bman.h | 4 +-
include/linux/fsl_qman.h | 1949 ++++++++++++++++++++++++++
14 files changed, 8070 insertions(+), 5 deletions(-)
create mode 100644 drivers/soc/freescale/qman.c
create mode 100644 drivers/soc/freescale/qman.h
create mode 100644 drivers/soc/freescale/qman_api.c
create mode 100644 drivers/soc/freescale/qman_portal.c
create mode 100644 drivers/soc/freescale/qman_priv.h
create mode 100644 drivers/soc/freescale/qman_utils.c
create mode 100644 include/linux/fsl_qman.h
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
index 63bf002..9329c5c 100644
--- a/drivers/soc/freescale/Kconfig
+++ b/drivers/soc/freescale/Kconfig
@@ -1,7 +1,8 @@
menuconfig FSL_DPA
- tristate "Freescale DPAA Buffer management"
+ tristate "Freescale DPAA Buffer/Queue management"
depends on HAS_FSL_QBMAN
default y
+ select FSL_QMAN_FQ_LOOKUP if PPC64
if FSL_DPA
@@ -48,4 +49,75 @@ config FSL_BMAN_CONFIG
endif # FSL_BMAN
+config FSL_QMAN
+ bool "Freescale Queue Manager (QMan) support"
+ default y
+
+if FSL_QMAN
+
+config FSL_QMAN_POLL_LIMIT
+ int
+ default 32
+
+config FSL_QMAN_CONFIG
+ bool "QMan device management"
+ default y
+ ---help---
+ If this linux image is running natively, you need this option. If this
+ linux image is running as a guest OS under the hypervisor, only one
+ guest OS ("the control plane") needs this option.
+
+# H/w settings that can be hard-coded for now.
+config FSL_QMAN_FQD_SZ
+ int "size of Frame Queue Descriptor region"
+ default 10
+ ---help---
+ This is the size of the FQD region defined as: PAGE_SIZE * (2^value)
+ ex: 10 => PAGE_SIZE * (2^10)
+ Note: Default device-trees now require minimum Kconfig setting of 10.
+
+# Corenet initiator settings. Stash request queues are 4-deep to match cores'
+# ability to snart. Stash priority is 3, other priorities are 2.
+config FSL_QMAN_CI_SCHED_CFG_SRCCIV
+ int
+ depends on FSL_QMAN_CONFIG
+ default 4
+config FSL_QMAN_CI_SCHED_CFG_SRQ_W
+ int
+ depends on FSL_QMAN_CONFIG
+ default 3
+config FSL_QMAN_CI_SCHED_CFG_RW_W
+ int
+ depends on FSL_QMAN_CONFIG
+ default 2
+config FSL_QMAN_CI_SCHED_CFG_BMAN_W
+ int
+ depends on FSL_QMAN_CONFIG
+ default 2
+
+# portal interrupt settings
+config FSL_QMAN_PIRQ_DQRR_ITHRESH
+ int
+ default 12
+config FSL_QMAN_PIRQ_MR_ITHRESH
+ int
+ default 4
+config FSL_QMAN_PIRQ_IPERIOD
+ int
+ default 100
+
+# 64 bit kernel support
+config FSL_QMAN_FQ_LOOKUP
+ bool
+ default n
+
+config FSL_QMAN_INIT_TIMEOUT
+ int "timeout for qman init stage, in seconds"
+ default 10
+ ---help---
+ The timeout setting to quit the initialization loop for non-control
+ partition in case the control partition fails to boot-up.
+
+endif # FSL_QMAN
+
endif # FSL_DPA
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
index 3f452ee..69be592 100644
--- a/drivers/soc/freescale/Makefile
+++ b/drivers/soc/freescale/Makefile
@@ -5,3 +5,7 @@ obj-$(CONFIG_HAS_FSL_QBMAN) += qbman_driver.o
# Bman
obj-$(CONFIG_FSL_BMAN) += bman_api.o
obj-$(CONFIG_FSL_BMAN_CONFIG) += bman.o bman_portal.o
+
+# Qman
+obj-$(CONFIG_FSL_QMAN) += qman_api.o qman_utils.o
+obj-$(CONFIG_FSL_QMAN_CONFIG) += qman.o qman_portal.o
diff --git a/drivers/soc/freescale/bman_api.c b/drivers/soc/freescale/bman_api.c
index cc15e28..ab16f16 100644
--- a/drivers/soc/freescale/bman_api.c
+++ b/drivers/soc/freescale/bman_api.c
@@ -65,6 +65,9 @@ struct bman_portal {
u8 alloced;
};
+/* For an explanation of the locking, redirection, or affine-portal logic,
+ * please consult the Qman driver for details. This is the same, only simpler
+ * (no fiddly Qman-specific bits.) */
#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
#define PORTAL_IRQ_LOCK(p, irqflags) \
do { \
@@ -170,7 +173,7 @@ static void depletion_unlink(struct bman_pool *pool)
PORTAL_IRQ_UNLOCK(pool->portal, irqflags);
}
-/* In the case that the application's core loop calls
+/* In the case that the application's core loop calls qman_poll() and
* bman_poll(), we ought to balance how often we incur the overheads of the
* slow-path poll. We'll use two decrementer sources. The idle decrementer
* constant is used when the last slow-poll detected no work to do, and the busy
diff --git a/drivers/soc/freescale/dpaa_alloc.c b/drivers/soc/freescale/dpaa_alloc.c
index 10d24b6..0215477 100644
--- a/drivers/soc/freescale/dpaa_alloc.c
+++ b/drivers/soc/freescale/dpaa_alloc.c
@@ -30,6 +30,7 @@
*/
#include "dpaa_sys.h"
+#include <linux/fsl_qman.h>
#include <linux/fsl_bman.h>
/* This interface is needed in a few places and though it's not specific to
@@ -402,3 +403,171 @@ int bman_reserve_bpid_range(u32 bpid, u32 count)
}
EXPORT_SYMBOL(bman_reserve_bpid_range);
#endif /* CONFIG_FSL_BMAN */
+
+#ifdef CONFIG_FSL_QMAN
+static DECLARE_DPA_ALLOC(fqalloc); /* FQID allocator */
+static DECLARE_DPA_ALLOC(qpalloc); /* pool-channel allocator */
+static DECLARE_DPA_ALLOC(cgralloc); /* CGR ID allocator */
+
+/* FQID allocator front-end */
+
+int qman_alloc_fqid_range(u32 *result, u32 count, u32 align, int partial)
+{
+ return dpa_alloc_new(&fqalloc, result, count, align, partial);
+}
+EXPORT_SYMBOL(qman_alloc_fqid_range);
+
+static int fq_cleanup(u32 fqid)
+{
+ return qman_shutdown_fq(fqid) == 0;
+}
+void qman_release_fqid_range(u32 fqid, u32 count)
+{
+ u32 total_invalid = release_id_range(&fqalloc, fqid, count, fq_cleanup);
+ if (total_invalid)
+ pr_err("FQID range [%d..%d] (%d) had %d leaks\n",
+ fqid, fqid + count - 1, count, total_invalid);
+}
+EXPORT_SYMBOL(qman_release_fqid_range);
+
+int qman_reserve_fqid_range(u32 fqid, u32 count)
+{
+ return dpa_alloc_reserve(&fqalloc, fqid, count);
+}
+EXPORT_SYMBOL(qman_reserve_fqid_range);
+
+void qman_seed_fqid_range(u32 fqid, u32 count)
+{
+ dpa_alloc_seed(&fqalloc, fqid, count);
+}
+EXPORT_SYMBOL(qman_seed_fqid_range);
+
+/* Pool-channel allocator front-end */
+
+int qman_alloc_pool_range(u32 *result, u32 count, u32 align, int partial)
+{
+ return dpa_alloc_new(&qpalloc, result, count, align, partial);
+}
+EXPORT_SYMBOL(qman_alloc_pool_range);
+
+static int qpool_cleanup(u32 qp)
+{
+ /* We query all FQDs starting from
+ * FQID 1 until we get an "invalid FQID" error, looking for non-OOS FQDs
+ * whose destination channel is the pool-channel being released.
+ * When a non-OOS FQD is found we attempt to clean it up */
+ struct qman_fq fq = {
+ .fqid = 1
+ };
+ int err;
+ do {
+ struct qm_mcr_queryfq_np np;
+ err = qman_query_fq_np(&fq, &np);
+ if (err)
+ /* FQID range exceeded, found no problems */
+ return 1;
+ if ((np.state & QM_MCR_NP_STATE_MASK) != QM_MCR_NP_STATE_OOS) {
+ struct qm_fqd fqd;
+ err = qman_query_fq(&fq, &fqd);
+ BUG_ON(err);
+ if (fqd.dest.channel == qp) {
+ /* The channel is the FQ's target, clean it */
+ if (qman_shutdown_fq(fq.fqid) != 0)
+ /* Couldn't shut down the FQ
+ so the pool must be leaked */
+ return 0;
+ }
+ }
+ /* Move to the next FQID */
+ fq.fqid++;
+ } while (1);
+}
+void qman_release_pool_range(u32 qp, u32 count)
+{
+ u32 total_invalid = release_id_range(&qpalloc, qp,
+ count, qpool_cleanup);
+ if (total_invalid) {
+ /* Pool channels are almost always used individually */
+ if (count == 1)
+ pr_err("Pool channel 0x%x had %d leaks\n",
+ qp, total_invalid);
+ else
+ pr_err("Pool channels [%d..%d] (%d) had %d leaks\n",
+ qp, qp + count - 1, count, total_invalid);
+ }
+}
+EXPORT_SYMBOL(qman_release_pool_range);
+
+
+void qman_seed_pool_range(u32 poolid, u32 count)
+{
+ dpa_alloc_seed(&qpalloc, poolid, count);
+
+}
+EXPORT_SYMBOL(qman_seed_pool_range);
+
+int qman_reserve_pool_range(u32 poolid, u32 count)
+{
+ return dpa_alloc_reserve(&qpalloc, poolid, count);
+}
+EXPORT_SYMBOL(qman_reserve_pool_range);
+
+
+/* CGR ID allocator front-end */
+
+int qman_alloc_cgrid_range(u32 *result, u32 count, u32 align, int partial)
+{
+ return dpa_alloc_new(&cgralloc, result, count, align, partial);
+}
+EXPORT_SYMBOL(qman_alloc_cgrid_range);
+
+static int cqr_cleanup(u32 cgrid)
+{
+ /* We query all FQDs starting from
+ * FQID 1 until we get an "invalid FQID" error, looking for non-OOS FQDs
+ * whose CGR is the CGR being released.
+ */
+ struct qman_fq fq = {
+ .fqid = 1
+ };
+ int err;
+ do {
+ struct qm_mcr_queryfq_np np;
+ err = qman_query_fq_np(&fq, &np);
+ if (err)
+ /* FQID range exceeded, found no problems */
+ return 1;
+ if ((np.state & QM_MCR_NP_STATE_MASK) != QM_MCR_NP_STATE_OOS) {
+ struct qm_fqd fqd;
+ err = qman_query_fq(&fq, &fqd);
+ BUG_ON(err);
+ if ((fqd.fq_ctrl & QM_FQCTRL_CGE) &&
+ (fqd.cgid == cgrid)) {
+ pr_err("CRGID 0x%x is being used by FQID 0x%x,"
+ " CGR will be leaked\n",
+ cgrid, fq.fqid);
+ return 1;
+ }
+ }
+ /* Move to the next FQID */
+ fq.fqid++;
+ } while (1);
+}
+
+void qman_release_cgrid_range(u32 cgrid, u32 count)
+{
+ u32 total_invalid = release_id_range(&cgralloc, cgrid,
+ count, cqr_cleanup);
+ if (total_invalid)
+ pr_err("CGRID range [%d..%d] (%d) had %d leaks\n",
+ cgrid, cgrid + count - 1, count, total_invalid);
+}
+EXPORT_SYMBOL(qman_release_cgrid_range);
+
+void qman_seed_cgrid_range(u32 cgrid, u32 count)
+{
+ dpa_alloc_seed(&cgralloc, cgrid, count);
+
+}
+EXPORT_SYMBOL(qman_seed_cgrid_range);
+#endif /* CONFIG_FSL_QMAN */
diff --git a/drivers/soc/freescale/dpaa_sys.h b/drivers/soc/freescale/dpaa_sys.h
index 19adf70..86b280c 100644
--- a/drivers/soc/freescale/dpaa_sys.h
+++ b/drivers/soc/freescale/dpaa_sys.h
@@ -179,10 +179,68 @@ static inline void copy_bytes(void *dest, const void *src, size_t sz)
#endif
/************/
+/* RB-trees */
+/************/
+
+/* We encapsulate RB-trees so that its easier to use non-linux forms in
+ * non-linux systems. This also encapsulates the extra plumbing that linux code
+ * usually provides when using RB-trees. This encapsulation assumes that the
+ * data type held by the tree is u32. */
+
+struct dpa_rbtree {
+ struct rb_root root;
+};
+#define DPA_RBTREE { .root = RB_ROOT }
+
+static inline void dpa_rbtree_init(struct dpa_rbtree *tree)
+{
+ tree->root = RB_ROOT;
+}
+
+#define IMPLEMENT_DPA_RBTREE(name, type, node_field, val_field) \
+static inline int name##_push(struct dpa_rbtree *tree, type *obj) \
+{ \
+ struct rb_node *parent = NULL, **p = &tree->root.rb_node; \
+ while (*p) { \
+ u32 item; \
+ parent = *p; \
+ item = rb_entry(parent, type, node_field)->val_field; \
+ if (obj->val_field < item) \
+ p = &parent->rb_left; \
+ else if (obj->val_field > item) \
+ p = &parent->rb_right; \
+ else \
+ return -EBUSY; \
+ } \
+ rb_link_node(&obj->node_field, parent, p); \
+ rb_insert_color(&obj->node_field, &tree->root); \
+ return 0; \
+} \
+static inline void name##_del(struct dpa_rbtree *tree, type *obj) \
+{ \
+ rb_erase(&obj->node_field, &tree->root); \
+} \
+static inline type *name##_find(struct dpa_rbtree *tree, u32 val) \
+{ \
+ type *ret; \
+ struct rb_node *p = tree->root.rb_node; \
+ while (p) { \
+ ret = rb_entry(p, type, node_field); \
+ if (val < ret->val_field) \
+ p = p->rb_left; \
+ else if (val > ret->val_field) \
+ p = p->rb_right; \
+ else \
+ return ret; \
+ } \
+ return NULL; \
+}
+
+/************/
/* Bootargs */
/************/
-/* Bman has "bportals=", they use the same syntax
+/* Qman has "qportals=" and Bman has "bportals=", they use the same syntax
* though; a comma-separated list of items, each item being a cpu index and/or a
* range of cpu indices, and each item optionally be prefixed by "s" to indicate
* that the portal associated with that cpu should be shared. See bman_driver.c
diff --git a/drivers/soc/freescale/qbman_driver.c b/drivers/soc/freescale/qbman_driver.c
index 80c2303..e11ba57 100644
--- a/drivers/soc/freescale/qbman_driver.c
+++ b/drivers/soc/freescale/qbman_driver.c
@@ -30,11 +30,55 @@
*/
#include <linux/time.h>
+#include "qman_priv.h"
#include "bman_priv.h"
static __init int qbman_init(void)
{
+ struct device_node *dn;
+ u32 is_portal_available;
+
bman_init();
+ qman_init();
+
+ is_portal_available = 0;
+ for_each_compatible_node(dn, NULL, "fsl,qman-portal") {
+ if (!of_device_is_available(dn))
+ continue;
+ else
+ is_portal_available = 1;
+ }
+
+ if (!qman_have_ccsr() && is_portal_available) {
+ struct qman_fq fq = {
+ .fqid = 1
+ };
+ struct qm_mcr_queryfq_np np;
+ int err, retry = CONFIG_FSL_QMAN_INIT_TIMEOUT;
+ struct timespec nowts, diffts, startts = current_kernel_time();
+ /* Loop while querying given fqid succeeds or time out */
+ while (1) {
+ err = qman_query_fq_np(&fq, &np);
+ if (!err) {
+ /* success, control-plane has configured QMan */
+ break;
+ } else if (err != -ERANGE) {
+ pr_err("QMan: I/O error, continuing anyway\n");
+ break;
+ }
+ nowts = current_kernel_time();
+ diffts = timespec_sub(nowts, startts);
+ if (diffts.tv_sec > 0) {
+ if (!retry--) {
+ pr_err("QMan: time out, control-plane"
+ " dead?\n");
+ break;
+ }
+ pr_warn("QMan: polling for the control-plane"
+ " (%d)\n", retry);
+ }
+ }
+ }
return 0;
}
diff --git a/drivers/soc/freescale/qman.c b/drivers/soc/freescale/qman.c
new file mode 100644
index 0000000..3d7d02e
--- /dev/null
+++ b/drivers/soc/freescale/qman.c
@@ -0,0 +1,991 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/cacheflush.h>
+#include "qman_priv.h"
+
+/* Last updated for v00.800 of the BG */
+
+/* Register offsets */
+#define REG_QCSP_LIO_CFG(n) (0x0000 + ((n) * 0x10))
+#define REG_QCSP_IO_CFG(n) (0x0004 + ((n) * 0x10))
+#define REG_QCSP_DD_CFG(n) (0x000c + ((n) * 0x10))
+#define REG_DD_CFG 0x0200
+#define REG_DCP_CFG(n) (0x0300 + ((n) * 0x10))
+#define REG_DCP_DD_CFG(n) (0x0304 + ((n) * 0x10))
+#define REG_DCP_DLM_AVG(n) (0x030c + ((n) * 0x10))
+#define REG_PFDR_FPC 0x0400
+#define REG_PFDR_FP_HEAD 0x0404
+#define REG_PFDR_FP_TAIL 0x0408
+#define REG_PFDR_FP_LWIT 0x0410
+#define REG_PFDR_CFG 0x0414
+#define REG_SFDR_CFG 0x0500
+#define REG_SFDR_IN_USE 0x0504
+#define REG_WQ_CS_CFG(n) (0x0600 + ((n) * 0x04))
+#define REG_WQ_DEF_ENC_WQID 0x0630
+#define REG_WQ_SC_DD_CFG(n) (0x640 + ((n) * 0x04))
+#define REG_WQ_PC_DD_CFG(n) (0x680 + ((n) * 0x04))
+#define REG_WQ_DC0_DD_CFG(n) (0x6c0 + ((n) * 0x04))
+#define REG_WQ_DC1_DD_CFG(n) (0x700 + ((n) * 0x04))
+#define REG_WQ_DCn_DD_CFG(n) (0x6c0 + ((n) * 0x40)) /* n=2,3 */
+#define REG_CM_CFG 0x0800
+#define REG_ECSR 0x0a00
+#define REG_ECIR 0x0a04
+#define REG_EADR 0x0a08
+#define REG_ECIR2 0x0a0c
+#define REG_EDATA(n) (0x0a10 + ((n) * 0x04))
+#define REG_SBEC(n) (0x0a80 + ((n) * 0x04))
+#define REG_MCR 0x0b00
+#define REG_MCP(n) (0x0b04 + ((n) * 0x04))
+#define REG_MISC_CFG 0x0be0
+#define REG_HID_CFG 0x0bf0
+#define REG_IDLE_STAT 0x0bf4
+#define REG_IP_REV_1 0x0bf8
+#define REG_IP_REV_2 0x0bfc
+#define REG_FQD_BARE 0x0c00
+#define REG_PFDR_BARE 0x0c20
+#define REG_offset_BAR 0x0004 /* relative to REG_[FQD|PFDR]_BARE */
+#define REG_offset_AR 0x0010 /* relative to REG_[FQD|PFDR]_BARE */
+#define REG_QCSP_BARE 0x0c80
+#define REG_QCSP_BAR 0x0c84
+#define REG_CI_SCHED_CFG 0x0d00
+#define REG_SRCIDR 0x0d04
+#define REG_LIODNR 0x0d08
+#define REG_CI_RLM_AVG 0x0d14
+#define REG_ERR_ISR 0x0e00 /* + "enum qm_isr_reg" */
+#define REG_REV3_QCSP_LIO_CFG(n) (0x1000 + ((n) * 0x10))
+#define REG_REV3_QCSP_IO_CFG(n) (0x1004 + ((n) * 0x10))
+#define REG_REV3_QCSP_DD_CFG(n) (0x100c + ((n) * 0x10))
+
+/* Assists for QMAN_MCR */
+#define MCR_INIT_PFDR 0x01000000
+#define MCR_get_rslt(v) (u8)((v) >> 24)
+#define MCR_rslt_idle(r) (!rslt || (rslt >= 0xf0))
+#define MCR_rslt_ok(r) (rslt == 0xf0)
+#define MCR_rslt_eaccess(r) (rslt == 0xf8)
+#define MCR_rslt_inval(r) (rslt == 0xff)
+
+struct qman;
+
+/* Follows WQ_CS_CFG0-5 */
+enum qm_wq_class {
+ qm_wq_portal = 0,
+ qm_wq_pool = 1,
+ qm_wq_fman0 = 2,
+ qm_wq_fman1 = 3,
+ qm_wq_caam = 4,
+ qm_wq_pme = 5,
+ qm_wq_first = qm_wq_portal,
+ qm_wq_last = qm_wq_pme
+};
+
+/* Follows FQD_[BARE|BAR|AR] and PFDR_[BARE|BAR|AR] */
+enum qm_memory {
+ qm_memory_fqd,
+ qm_memory_pfdr
+};
+
+/* Used by all error interrupt registers except 'inhibit' */
+#define QM_EIRQ_CIDE 0x20000000 /* Corenet Initiator Data Error */
+#define QM_EIRQ_CTDE 0x10000000 /* Corenet Target Data Error */
+#define QM_EIRQ_CITT 0x08000000 /* Corenet Invalid Target Transaction */
+#define QM_EIRQ_PLWI 0x04000000 /* PFDR Low Watermark */
+#define QM_EIRQ_MBEI 0x02000000 /* Multi-bit ECC Error */
+#define QM_EIRQ_SBEI 0x01000000 /* Single-bit ECC Error */
+#define QM_EIRQ_PEBI 0x00800000 /* PFDR Enqueues Blocked Interrupt */
+#define QM_EIRQ_IFSI 0x00020000 /* Invalid FQ Flow Control State */
+#define QM_EIRQ_ICVI 0x00010000 /* Invalid Command Verb */
+#define QM_EIRQ_IDDI 0x00000800 /* Invalid Dequeue (Direct-connect) */
+#define QM_EIRQ_IDFI 0x00000400 /* Invalid Dequeue FQ */
+#define QM_EIRQ_IDSI 0x00000200 /* Invalid Dequeue Source */
+#define QM_EIRQ_IDQI 0x00000100 /* Invalid Dequeue Queue */
+#define QM_EIRQ_IECE 0x00000010 /* Invalid Enqueue Configuration */
+#define QM_EIRQ_IEOI 0x00000008 /* Invalid Enqueue Overflow */
+#define QM_EIRQ_IESI 0x00000004 /* Invalid Enqueue State */
+#define QM_EIRQ_IECI 0x00000002 /* Invalid Enqueue Channel */
+#define QM_EIRQ_IEQI 0x00000001 /* Invalid Enqueue Queue */
+
+/* QMAN_ECIR valid error bit */
+#define PORTAL_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IESI | QM_EIRQ_IEOI | \
+ QM_EIRQ_IDQI | QM_EIRQ_IDSI | QM_EIRQ_IDFI | \
+ QM_EIRQ_IDDI | QM_EIRQ_ICVI | QM_EIRQ_IFSI)
+#define FQID_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IECI | QM_EIRQ_IESI | \
+ QM_EIRQ_IEOI | QM_EIRQ_IDQI | QM_EIRQ_IDFI | \
+ QM_EIRQ_IFSI)
+
+union qman_ecir {
+ u32 ecir_raw;
+ struct {
+ u32 __reserved:2;
+ u32 portal_type:1;
+ u32 portal_num:5;
+ u32 fqid:24;
+ } __packed info;
+};
+
+union qman_ecir2 {
+ u32 ecir2_raw;
+ struct {
+ u32 portal_type:1;
+ u32 __reserved:21;
+ u32 portal_num:10;
+ } __packed info;
+};
+
+union qman_eadr {
+ u32 eadr_raw;
+ struct {
+ u32 __reserved1:4;
+ u32 memid:4;
+ u32 __reserved2:12;
+ u32 eadr:12;
+ } __packed info;
+ struct {
+ u32 __reserved1:3;
+ u32 memid:5;
+ u32 __reserved:8;
+ u32 eadr:16;
+ } __packed info_rev3;
+};
+
+struct qman_hwerr_txt {
+ u32 mask;
+ const char *txt;
+};
+
+#define QMAN_HWE_TXT(a, b) { .mask = QM_EIRQ_##a, .txt = b }
+
+static const struct qman_hwerr_txt qman_hwerr_txts[] = {
+ QMAN_HWE_TXT(CIDE, "Corenet Initiator Data Error"),
+ QMAN_HWE_TXT(CTDE, "Corenet Target Data Error"),
+ QMAN_HWE_TXT(CITT, "Corenet Invalid Target Transaction"),
+ QMAN_HWE_TXT(PLWI, "PFDR Low Watermark"),
+ QMAN_HWE_TXT(MBEI, "Multi-bit ECC Error"),
+ QMAN_HWE_TXT(SBEI, "Single-bit ECC Error"),
+ QMAN_HWE_TXT(PEBI, "PFDR Enqueues Blocked Interrupt"),
+ QMAN_HWE_TXT(ICVI, "Invalid Command Verb"),
+ QMAN_HWE_TXT(IFSI, "Invalid Flow Control State"),
+ QMAN_HWE_TXT(IDDI, "Invalid Dequeue (Direct-connect)"),
+ QMAN_HWE_TXT(IDFI, "Invalid Dequeue FQ"),
+ QMAN_HWE_TXT(IDSI, "Invalid Dequeue Source"),
+ QMAN_HWE_TXT(IDQI, "Invalid Dequeue Queue"),
+ QMAN_HWE_TXT(IECE, "Invalid Enqueue Configuration"),
+ QMAN_HWE_TXT(IEOI, "Invalid Enqueue Overflow"),
+ QMAN_HWE_TXT(IESI, "Invalid Enqueue State"),
+ QMAN_HWE_TXT(IECI, "Invalid Enqueue Channel"),
+ QMAN_HWE_TXT(IEQI, "Invalid Enqueue Queue")
+};
+#define QMAN_HWE_COUNT (sizeof(qman_hwerr_txts)/sizeof(struct qman_hwerr_txt))
+
+struct qman_error_info_mdata {
+ u16 addr_mask;
+ u16 bits;
+ const char *txt;
+};
+
+#define QMAN_ERR_MDATA(a, b, c) { .addr_mask = a, .bits = b, .txt = c}
+static const struct qman_error_info_mdata error_mdata[] = {
+ QMAN_ERR_MDATA(0x01FF, 24, "FQD cache tag memory 0"),
+ QMAN_ERR_MDATA(0x01FF, 24, "FQD cache tag memory 1"),
+ QMAN_ERR_MDATA(0x01FF, 24, "FQD cache tag memory 2"),
+ QMAN_ERR_MDATA(0x01FF, 24, "FQD cache tag memory 3"),
+ QMAN_ERR_MDATA(0x0FFF, 512, "FQD cache memory"),
+ QMAN_ERR_MDATA(0x07FF, 128, "SFDR memory"),
+ QMAN_ERR_MDATA(0x01FF, 72, "WQ context memory"),
+ QMAN_ERR_MDATA(0x00FF, 240, "CGR memory"),
+ QMAN_ERR_MDATA(0x00FF, 302, "Internal Order Restoration List memory"),
+ QMAN_ERR_MDATA(0x01FF, 256, "SW portal ring memory"),
+};
+#define QMAN_ERR_MDATA_COUNT \
+ (sizeof(error_mdata)/sizeof(struct qman_error_info_mdata))
+
+/* Add this in Kconfig */
+#define QMAN_ERRS_TO_UNENABLE (QM_EIRQ_PLWI | QM_EIRQ_PEBI)
+
+/**
+ * qm_err_isr_<reg>_<verb> - Manipulate global interrupt registers
+ * @v: for accessors that write values, this is the 32-bit value
+ *
+ * Manipulates QMAN_ERR_ISR, QMAN_ERR_IER, QMAN_ERR_ISDR, QMAN_ERR_IIR. All
+ * manipulations except qm_err_isr_[un]inhibit() use 32-bit masks composed of
+ * the QM_EIRQ_*** definitions. Note that "qm_err_isr_enable_write" means
+ * "write the enable register" rather than "enable the write register"!
+ */
+#define qm_err_isr_status_read(qm) \
+ __qm_err_isr_read(qm, qm_isr_status)
+#define qm_err_isr_status_clear(qm, m) \
+ __qm_err_isr_write(qm, qm_isr_status, m)
+#define qm_err_isr_enable_read(qm) \
+ __qm_err_isr_read(qm, qm_isr_enable)
+#define qm_err_isr_enable_write(qm, v) \
+ __qm_err_isr_write(qm, qm_isr_enable, v)
+#define qm_err_isr_disable_read(qm) \
+ __qm_err_isr_read(qm, qm_isr_disable)
+#define qm_err_isr_disable_write(qm, v) \
+ __qm_err_isr_write(qm, qm_isr_disable, v)
+#define qm_err_isr_inhibit(qm) \
+ __qm_err_isr_write(qm, qm_isr_inhibit, 1)
+#define qm_err_isr_uninhibit(qm) \
+ __qm_err_isr_write(qm, qm_isr_inhibit, 0)
+
+/*
+ * TODO: unimplemented registers
+ *
+ * Keeping a list here of Qman registers I have not yet covered;
+ * QCSP_DD_IHRSR, QCSP_DD_IHRFR, QCSP_DD_HASR,
+ * DCP_DD_IHRSR, DCP_DD_IHRFR, DCP_DD_HASR, CM_CFG,
+ * QMAN_EECC, QMAN_SBET, QMAN_EINJ, QMAN_SBEC0-12
+ */
+
+/* Encapsulate "struct qman *" as a cast of the register space address. */
+
+static struct qman *qm_create(void *regs)
+{
+ return (struct qman *)regs;
+}
+
+static inline u32 __qm_in(struct qman *qm, u32 offset)
+{
+ return in_be32((void *)qm + offset);
+}
+static inline void __qm_out(struct qman *qm, u32 offset, u32 val)
+{
+ out_be32((void *)qm + offset, val);
+}
+#define qm_in(reg) __qm_in(qm, REG_##reg)
+#define qm_out(reg, val) __qm_out(qm, REG_##reg, val)
+
+static u32 __qm_err_isr_read(struct qman *qm, enum qm_isr_reg n)
+{
+ return __qm_in(qm, REG_ERR_ISR + (n << 2));
+}
+
+static void __qm_err_isr_write(struct qman *qm, enum qm_isr_reg n, u32 val)
+{
+ __qm_out(qm, REG_ERR_ISR + (n << 2), val);
+}
+
+static void qm_set_dc(struct qman *qm, enum qm_dc_portal portal,
+ int ed, u8 sernd)
+{
+ DPA_ASSERT(!ed || (portal == qm_dc_portal_fman0) ||
+ (portal == qm_dc_portal_fman1));
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
+ qm_out(DCP_CFG(portal), (ed ? 0x1000 : 0) | (sernd & 0x3ff));
+ else
+ qm_out(DCP_CFG(portal), (ed ? 0x100 : 0) | (sernd & 0x1f));
+}
+
+static void qm_set_wq_scheduling(struct qman *qm, enum qm_wq_class wq_class,
+ u8 cs_elev, u8 csw2, u8 csw3, u8 csw4, u8 csw5,
+ u8 csw6, u8 csw7)
+{
+ qm_out(WQ_CS_CFG(wq_class), ((cs_elev & 0xff) << 24) |
+ ((csw2 & 0x7) << 20) | ((csw3 & 0x7) << 16) |
+ ((csw4 & 0x7) << 12) | ((csw5 & 0x7) << 8) |
+ ((csw6 & 0x7) << 4) | (csw7 & 0x7));
+}
+
+static void qm_set_hid(struct qman *qm)
+{
+ qm_out(HID_CFG, 0);
+}
+
+static void qm_set_corenet_initiator(struct qman *qm)
+{
+ qm_out(CI_SCHED_CFG,
+ 0x80000000 | /* write srcciv enable */
+ (CONFIG_FSL_QMAN_CI_SCHED_CFG_SRCCIV << 24) |
+ (CONFIG_FSL_QMAN_CI_SCHED_CFG_SRQ_W << 8) |
+ (CONFIG_FSL_QMAN_CI_SCHED_CFG_RW_W << 4) |
+ CONFIG_FSL_QMAN_CI_SCHED_CFG_BMAN_W);
+}
+
+static void qm_get_version(struct qman *qm, u16 *id, u8 *major, u8 *minor)
+{
+ u32 v = qm_in(IP_REV_1);
+ *id = (v >> 16);
+ *major = (v >> 8) & 0xff;
+ *minor = v & 0xff;
+}
+
+static void qm_set_memory(struct qman *qm, enum qm_memory memory, u64 ba,
+ int enable, int prio, int stash, u32 size)
+{
+ u32 offset = (memory == qm_memory_fqd) ? REG_FQD_BARE : REG_PFDR_BARE;
+ u32 exp = ilog2(size);
+ /* choke if size isn't within range */
+ DPA_ASSERT((size >= 4096) && (size <= 1073741824) &&
+ is_power_of_2(size));
+ /* choke if 'ba' has lower-alignment than 'size' */
+ DPA_ASSERT(!(ba & (size - 1)));
+ __qm_out(qm, offset, upper_32_bits(ba));
+ __qm_out(qm, offset + REG_offset_BAR, lower_32_bits(ba));
+ __qm_out(qm, offset + REG_offset_AR,
+ (enable ? 0x80000000 : 0) |
+ (prio ? 0x40000000 : 0) |
+ (stash ? 0x20000000 : 0) |
+ (exp - 1));
+}
+
+static void qm_set_pfdr_threshold(struct qman *qm, u32 th, u8 k)
+{
+ qm_out(PFDR_FP_LWIT, th & 0xffffff);
+ qm_out(PFDR_CFG, k);
+}
+
+static void qm_set_sfdr_threshold(struct qman *qm, u16 th)
+{
+ qm_out(SFDR_CFG, th & 0x3ff);
+}
+
+static int qm_init_pfdr(struct qman *qm, u32 pfdr_start, u32 num)
+{
+ u8 rslt = MCR_get_rslt(qm_in(MCR));
+
+ DPA_ASSERT(pfdr_start && !(pfdr_start & 7) && !(num & 7) && num);
+ /* Make sure the command interface is 'idle' */
+ if (!MCR_rslt_idle(rslt))
+ panic("QMAN_MCR isn't idle");
+
+ /* Write the MCR command params then the verb */
+ qm_out(MCP(0), pfdr_start);
+ /* TODO: remove this - it's a workaround for a model bug that is
+ * corrected in more recent versions. We use the workaround until
+ * everyone has upgraded. */
+ qm_out(MCP(1), (pfdr_start + num - 16));
+ lwsync();
+ qm_out(MCR, MCR_INIT_PFDR);
+ /* Poll for the result */
+ do {
+ rslt = MCR_get_rslt(qm_in(MCR));
+ } while (!MCR_rslt_idle(rslt));
+ if (MCR_rslt_ok(rslt))
+ return 0;
+ if (MCR_rslt_eaccess(rslt))
+ return -EACCES;
+ if (MCR_rslt_inval(rslt))
+ return -EINVAL;
+ pr_crit("Unexpected result from MCR_INIT_PFDR: %02x\n", rslt);
+ return -ENOSYS;
+}
+
+/*****************/
+/* Config driver */
+/*****************/
+
+/* We support only one of these */
+static struct qman *qm;
+static struct device_node *qm_node;
+
+/* And this state belongs to 'qm'. It is set during fsl_qman_init(), but used
+ * during qman_init_ccsr(). */
+static dma_addr_t fqd_a, pfdr_a;
+static size_t fqd_sz, pfdr_sz;
+
+static int qman_fqd(struct reserved_mem *rmem)
+{
+ fqd_a = rmem->base;
+ fqd_sz = rmem->size;
+
+ WARN_ON(!(fqd_a && fqd_sz));
+
+ return 0;
+}
+RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
+
+static int qman_pfdr(struct reserved_mem *rmem)
+{
+ pfdr_a = rmem->base;
+ pfdr_sz = rmem->size;
+
+ WARN_ON(!(pfdr_a && pfdr_sz));
+
+ return 0;
+}
+RESERVEDMEM_OF_DECLARE(qman_fbpr, "fsl,qman-pfdr", qman_pfdr);
+
+static __init int parse_mem_property(struct device_node *node,
+ dma_addr_t *addr, size_t *sz, int zero)
+{
+ if (zero) {
+ /* map as cacheable, non-guarded */
+ void __iomem *tmpp = ioremap_prot(*addr, *sz, 0);
+ memset_io(tmpp, 0, *sz);
+ flush_dcache_range((unsigned long)tmpp,
+ (unsigned long)tmpp + *sz);
+ iounmap(tmpp);
+ }
+
+ return 0;
+}
+
+/* TODO:
+ * - there is obviously no handling of errors,
+ * - the calls to qm_set_memory() hard-code the priority and CPC-stashing for
+ * both memory resources to zero.
+ */
+static int __init fsl_qman_init(struct device_node *node)
+{
+ struct resource res;
+ u32 __iomem *regs;
+ int ret;
+ u16 id;
+ u8 major, minor;
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret) {
+ pr_err("Can't get %s property '%s'\n", node->full_name, "reg");
+ return ret;
+ }
+
+ ret = parse_mem_property(node, &fqd_a, &fqd_sz, 1);
+ BUG_ON(ret);
+ ret = parse_mem_property(node, &pfdr_a, &pfdr_sz, 0);
+ BUG_ON(ret);
+
+ /* Global configuration */
+ regs = ioremap(res.start, res.end - res.start + 1);
+ qm = qm_create(regs);
+ qm_node = node;
+ qm_get_version(qm, &id, &major, &minor);
+ pr_info("Qman ver:%04x,%02x,%02x\n", id, major, minor);
+ if (!qman_ip_rev) {
+ if ((major == 1) && (minor == 0)) {
+ pr_err("QMAN rev1.0 on P4080 rev1 is not supported!\n");
+ iounmap(regs);
+ return -ENODEV;
+ } else if ((major == 1) && (minor == 1))
+ qman_ip_rev = QMAN_REV11;
+ else if ((major == 1) && (minor == 2))
+ qman_ip_rev = QMAN_REV12;
+ else if ((major == 2) && (minor == 0))
+ qman_ip_rev = QMAN_REV20;
+ else if ((major == 3) && (minor == 0))
+ qman_ip_rev = QMAN_REV30;
+ else if ((major == 3) && (minor == 1))
+ qman_ip_rev = QMAN_REV31;
+ else {
+ pr_warn("unknown Qman version, default to rev1.1\n");
+ qman_ip_rev = QMAN_REV11;
+ }
+ }
+
+ return 0;
+}
+
+int qman_have_ccsr(void)
+{
+ return qm ? 1 : 0;
+}
+
+__init void qman_init_early(void)
+{
+ struct device_node *dn;
+ int ret;
+
+ for_each_compatible_node(dn, NULL, "fsl,qman") {
+ if (qm)
+ pr_err("%s: only one 'fsl,qman' allowed\n",
+ dn->full_name);
+ else {
+ if (!of_device_is_available(dn))
+ continue;
+
+ ret = fsl_qman_init(dn);
+ BUG_ON(ret);
+ }
+ }
+}
+
+static void log_edata_bits(u32 bit_count)
+{
+ u32 i, j, mask = 0xffffffff;
+
+ pr_warn("Qman ErrInt, EDATA:\n");
+ i = bit_count/32;
+ if (bit_count%32) {
+ i++;
+ mask = ~(mask << bit_count%32);
+ }
+ j = 16-i;
+ pr_warn(" 0x%08x\n", qm_in(EDATA(j)) & mask);
+ j++;
+ for (; j < 16; j++)
+ pr_warn(" 0x%08x\n", qm_in(EDATA(j)));
+}
+
+static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
+{
+ union qman_ecir ecir_val;
+ union qman_eadr eadr_val;
+
+ ecir_val.ecir_raw = qm_in(ECIR);
+ /* Is portal info valid */
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
+ union qman_ecir2 ecir2_val;
+ ecir2_val.ecir2_raw = qm_in(ECIR2);
+ if (ecsr_val & PORTAL_ECSR_ERR) {
+ pr_warn("Qman ErrInt: %s id %d\n",
+ (ecir2_val.info.portal_type) ?
+ "DCP" : "SWP", ecir2_val.info.portal_num);
+ }
+ if (ecsr_val & (FQID_ECSR_ERR | QM_EIRQ_IECE)) {
+ pr_warn("Qman ErrInt: ecir.fqid 0x%x\n",
+ ecir_val.info.fqid);
+ }
+ if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
+ eadr_val.eadr_raw = qm_in(EADR);
+ pr_warn("Qman ErrInt: EADR Memory: %s, 0x%x\n",
+ error_mdata[eadr_val.info_rev3.memid].txt,
+ error_mdata[eadr_val.info_rev3.memid].addr_mask
+ & eadr_val.info_rev3.eadr);
+ log_edata_bits(
+ error_mdata[eadr_val.info_rev3.memid].bits);
+ }
+ } else {
+ if (ecsr_val & PORTAL_ECSR_ERR) {
+ pr_warn("Qman ErrInt: %s id %d\n",
+ (ecir_val.info.portal_type) ?
+ "DCP" : "SWP", ecir_val.info.portal_num);
+ }
+ if (ecsr_val & FQID_ECSR_ERR) {
+ pr_warn("Qman ErrInt: ecir.fqid 0x%x\n",
+ ecir_val.info.fqid);
+ }
+ if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
+ eadr_val.eadr_raw = qm_in(EADR);
+ pr_warn("Qman ErrInt: EADR Memory: %s, 0x%x\n",
+ error_mdata[eadr_val.info.memid].txt,
+ error_mdata[eadr_val.info.memid].addr_mask
+ & eadr_val.info.eadr);
+ log_edata_bits(error_mdata[eadr_val.info.memid].bits);
+ }
+ }
+}
+
+/* Qman interrupt handler */
+static irqreturn_t qman_isr(int irq, void *ptr)
+{
+ u32 isr_val, ier_val, ecsr_val, isr_mask, i;
+
+ ier_val = qm_err_isr_enable_read(qm);
+ isr_val = qm_err_isr_status_read(qm);
+ ecsr_val = qm_in(ECSR);
+ isr_mask = isr_val & ier_val;
+
+ if (!isr_mask)
+ return IRQ_NONE;
+ for (i = 0; i < QMAN_HWE_COUNT; i++) {
+ if (qman_hwerr_txts[i].mask & isr_mask) {
+ pr_warn("Qman ErrInt: %s\n", qman_hwerr_txts[i].txt);
+ if (qman_hwerr_txts[i].mask & ecsr_val) {
+ log_additional_error_info(isr_mask, ecsr_val);
+ /* Re-arm error capture registers */
+ qm_out(ECSR, ecsr_val);
+ }
+ if (qman_hwerr_txts[i].mask & QMAN_ERRS_TO_UNENABLE) {
+ pr_devel("Qman un-enabling error 0x%x\n",
+ qman_hwerr_txts[i].mask);
+ ier_val &= ~qman_hwerr_txts[i].mask;
+ qm_err_isr_enable_write(qm, ier_val);
+ }
+ }
+ }
+ qm_err_isr_status_clear(qm, isr_val);
+ return IRQ_HANDLED;
+}
+
+static int __bind_irq(void)
+{
+ int ret, err_irq;
+
+ err_irq = of_irq_to_resource(qm_node, 0, NULL);
+ if (err_irq == NO_IRQ) {
+ pr_info("Can't get %s property '%s'\n", qm_node->full_name,
+ "interrupts");
+ return -ENODEV;
+ }
+ ret = request_irq(err_irq, qman_isr, IRQF_SHARED, "qman-err", qm_node);
+ if (ret) {
+ pr_err("request_irq() failed %d for '%s'\n", ret,
+ qm_node->full_name);
+ return -ENODEV;
+ }
+ /* Write-to-clear any stale bits, (eg. starvation being asserted prior
+ * to resource allocation during driver init). */
+ qm_err_isr_status_clear(qm, 0xffffffff);
+ /* Enable Error Interrupts */
+ qm_err_isr_enable_write(qm, 0xffffffff);
+ return 0;
+}
+
+int qman_init_ccsr(struct device_node *node)
+{
+ int ret;
+ if (!qman_have_ccsr())
+ return 0;
+ if (node != qm_node)
+ return -EINVAL;
+ /* FQD memory */
+ qm_set_memory(qm, qm_memory_fqd, fqd_a, 1, 0, 0, fqd_sz);
+ /* PFDR memory */
+ qm_set_memory(qm, qm_memory_pfdr, pfdr_a, 1, 0, 0, pfdr_sz);
+ qm_init_pfdr(qm, 8, pfdr_sz / 64 - 8);
+ /* thresholds */
+ qm_set_pfdr_threshold(qm, 512, 64);
+ qm_set_sfdr_threshold(qm, 128);
+ /* clear stale PEBI bit from interrupt status register */
+ qm_err_isr_status_clear(qm, QM_EIRQ_PEBI);
+ /* corenet initiator settings */
+ qm_set_corenet_initiator(qm);
+ /* HID settings */
+ qm_set_hid(qm);
+ /* Set scheduling weights to defaults */
+ for (ret = qm_wq_first; ret <= qm_wq_last; ret++)
+ qm_set_wq_scheduling(qm, ret, 0, 0, 0, 0, 0, 0, 0);
+ /* We are not prepared to accept ERNs for hardware enqueues */
+ qm_set_dc(qm, qm_dc_portal_fman0, 1, 0);
+ qm_set_dc(qm, qm_dc_portal_fman1, 1, 0);
+ /* Initialise Error Interrupt Handler */
+ ret = __bind_irq();
+ if (ret)
+ return ret;
+ return 0;
+}
+
+#define LIO_CFG_LIODN_MASK 0x0fff0000
+void qman_liodn_fixup(u16 channel)
+{
+ static int done;
+ static u32 liodn_offset;
+ u32 before, after;
+ int idx = channel - QM_CHANNEL_SWPORTAL0;
+
+ if (!qman_have_ccsr())
+ return;
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
+ before = qm_in(REV3_QCSP_LIO_CFG(idx));
+ else
+ before = qm_in(QCSP_LIO_CFG(idx));
+ if (!done) {
+ liodn_offset = before & LIO_CFG_LIODN_MASK;
+ done = 1;
+ return;
+ }
+ after = (before & (~LIO_CFG_LIODN_MASK)) | liodn_offset;
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
+ qm_out(REV3_QCSP_LIO_CFG(idx), after);
+ else
+ qm_out(QCSP_LIO_CFG(idx), after);
+}
+
+#define IO_CFG_SDEST_MASK 0x00ff0000
+int qman_set_sdest(u16 channel, unsigned int cpu_idx)
+{
+ int idx = channel - QM_CHANNEL_SWPORTAL0;
+ u32 before, after;
+
+ if (!qman_have_ccsr())
+ return -ENODEV;
+
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
+ before = qm_in(REV3_QCSP_IO_CFG(idx));
+ /* Each pair of vcpu share the same SRQ(SDEST) */
+ cpu_idx /= 2;
+ after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
+ qm_out(REV3_QCSP_IO_CFG(idx), after);
+ } else {
+ before = qm_in(QCSP_IO_CFG(idx));
+ after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
+ qm_out(QCSP_IO_CFG(idx), after);
+ }
+ return 0;
+}
+
+#define MISC_CFG_WPM_MASK 0x00000002
+int qm_set_wpm(int wpm)
+{
+ u32 before;
+ u32 after;
+
+ if (!qman_have_ccsr())
+ return -ENODEV;
+
+ before = qm_in(MISC_CFG);
+ after = (before & (~MISC_CFG_WPM_MASK)) | (wpm << 1);
+ qm_out(MISC_CFG, after);
+ return 0;
+}
+
+int qm_get_wpm(int *wpm)
+{
+ u32 before;
+
+ if (!qman_have_ccsr())
+ return -ENODEV;
+
+ before = qm_in(MISC_CFG);
+ *wpm = (before & MISC_CFG_WPM_MASK) >> 1;
+ return 0;
+}
+
+#ifdef CONFIG_SYSFS
+
+#define DRV_NAME "fsl-qman"
+
+static ssize_t show_pfdr_fpc(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", qm_in(PFDR_FPC));
+};
+
+static ssize_t show_dlm_avg(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ u32 data;
+ int i;
+
+ if (!sscanf(dev_attr->attr.name, "dcp%d_dlm_avg", &i))
+ return -EINVAL;
+ data = qm_in(DCP_DLM_AVG(i));
+ return snprintf(buf, PAGE_SIZE, "%d.%08d\n", data>>8,
+ (data & 0x000000ff)*390625);
+};
+
+static ssize_t set_dlm_avg(struct device *dev,
+ struct device_attribute *dev_attr, const char *buf, size_t count)
+{
+ unsigned long val;
+ int i;
+
+ if (!sscanf(dev_attr->attr.name, "dcp%d_dlm_avg", &i))
+ return -EINVAL;
+ if (kstrtoul(buf, 0, &val)) {
+ dev_dbg(dev, "invalid input %s\n", buf);
+ return -EINVAL;
+ }
+ qm_out(DCP_DLM_AVG(i), val);
+ return count;
+};
+
+static ssize_t show_pfdr_cfg(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", qm_in(PFDR_CFG));
+};
+
+static ssize_t set_pfdr_cfg(struct device *dev,
+ struct device_attribute *dev_attr, const char *buf, size_t count)
+{
+ unsigned long val;
+
+ if (kstrtoul(buf, 0, &val)) {
+ dev_dbg(dev, "invalid input %s\n", buf);
+ return -EINVAL;
+ }
+ qm_out(PFDR_CFG, val);
+ return count;
+};
+
+static ssize_t show_sfdr_in_use(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", qm_in(SFDR_IN_USE));
+};
+
+static ssize_t show_idle_stat(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%u\n", qm_in(IDLE_STAT));
+};
+
+static ssize_t show_ci_rlm_avg(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ u32 data = qm_in(CI_RLM_AVG);
+ return snprintf(buf, PAGE_SIZE, "%d.%08d\n", data>>8,
+ (data & 0x000000ff)*390625);
+};
+
+static ssize_t set_ci_rlm_avg(struct device *dev,
+ struct device_attribute *dev_attr, const char *buf, size_t count)
+{
+ unsigned long val;
+
+ if (kstrtoul(buf, 0, &val)) {
+ dev_dbg(dev, "invalid input %s\n", buf);
+ return -EINVAL;
+ }
+ qm_out(CI_RLM_AVG, val);
+ return count;
+};
+
+static ssize_t show_err_isr(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", qm_in(ERR_ISR));
+};
+
+
+static ssize_t show_sbec(struct device *dev,
+ struct device_attribute *dev_attr, char *buf)
+{
+ int i;
+
+ if (!sscanf(dev_attr->attr.name, "sbec_%d", &i))
+ return -EINVAL;
+ return snprintf(buf, PAGE_SIZE, "%u\n", qm_in(SBEC(i)));
+};
+
+static DEVICE_ATTR(pfdr_fpc, S_IRUSR, show_pfdr_fpc, NULL);
+static DEVICE_ATTR(pfdr_cfg, S_IRUSR, show_pfdr_cfg, set_pfdr_cfg);
+static DEVICE_ATTR(idle_stat, S_IRUSR, show_idle_stat, NULL);
+static DEVICE_ATTR(ci_rlm_avg, (S_IRUSR|S_IWUSR),
+ show_ci_rlm_avg, set_ci_rlm_avg);
+static DEVICE_ATTR(err_isr, S_IRUSR, show_err_isr, NULL);
+static DEVICE_ATTR(sfdr_in_use, S_IRUSR, show_sfdr_in_use, NULL);
+
+static DEVICE_ATTR(dcp0_dlm_avg, (S_IRUSR|S_IWUSR), show_dlm_avg, set_dlm_avg);
+static DEVICE_ATTR(dcp1_dlm_avg, (S_IRUSR|S_IWUSR), show_dlm_avg, set_dlm_avg);
+static DEVICE_ATTR(dcp2_dlm_avg, (S_IRUSR|S_IWUSR), show_dlm_avg, set_dlm_avg);
+static DEVICE_ATTR(dcp3_dlm_avg, (S_IRUSR|S_IWUSR), show_dlm_avg, set_dlm_avg);
+
+static DEVICE_ATTR(sbec_0, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_1, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_2, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_3, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_4, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_5, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_6, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_7, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_8, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_9, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_10, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_11, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_12, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_13, S_IRUSR, show_sbec, NULL);
+static DEVICE_ATTR(sbec_14, S_IRUSR, show_sbec, NULL);
+
+static struct attribute *qman_dev_attributes[] = {
+ &dev_attr_pfdr_fpc.attr,
+ &dev_attr_pfdr_cfg.attr,
+ &dev_attr_idle_stat.attr,
+ &dev_attr_ci_rlm_avg.attr,
+ &dev_attr_err_isr.attr,
+ &dev_attr_dcp0_dlm_avg.attr,
+ &dev_attr_dcp1_dlm_avg.attr,
+ &dev_attr_dcp2_dlm_avg.attr,
+ &dev_attr_dcp3_dlm_avg.attr,
+ /* sfdr_in_use will be added if necessary */
+ NULL
+};
+
+static struct attribute *qman_dev_ecr_attributes[] = {
+ &dev_attr_sbec_0.attr,
+ &dev_attr_sbec_1.attr,
+ &dev_attr_sbec_2.attr,
+ &dev_attr_sbec_3.attr,
+ &dev_attr_sbec_4.attr,
+ &dev_attr_sbec_5.attr,
+ &dev_attr_sbec_6.attr,
+ &dev_attr_sbec_7.attr,
+ &dev_attr_sbec_8.attr,
+ &dev_attr_sbec_9.attr,
+ &dev_attr_sbec_10.attr,
+ &dev_attr_sbec_11.attr,
+ &dev_attr_sbec_12.attr,
+ &dev_attr_sbec_13.attr,
+ &dev_attr_sbec_14.attr,
+ NULL
+};
+
+/* root level */
+static const struct attribute_group qman_dev_attr_grp = {
+ .name = NULL,
+ .attrs = qman_dev_attributes
+};
+static const struct attribute_group qman_dev_ecr_grp = {
+ .name = "error_capture",
+ .attrs = qman_dev_ecr_attributes
+};
+
+static int of_fsl_qman_remove(struct platform_device *ofdev)
+{
+ sysfs_remove_group(&ofdev->dev.kobj, &qman_dev_attr_grp);
+ return 0;
+};
+
+static int of_fsl_qman_probe(struct platform_device *ofdev)
+{
+ int ret;
+ struct device *dev = &ofdev->dev;
+
+ ret = sysfs_create_group(&dev->kobj, &qman_dev_attr_grp);
+ if (ret)
+ goto done;
+ ret = sysfs_add_file_to_group(&dev->kobj,
+ &dev_attr_sfdr_in_use.attr, qman_dev_attr_grp.name);
+ if (ret)
+ goto del_group_0;
+ ret = sysfs_create_group(&dev->kobj, &qman_dev_ecr_grp);
+ if (ret)
+ goto del_group_0;
+
+ goto done;
+
+del_group_0:
+ sysfs_remove_group(&dev->kobj, &qman_dev_attr_grp);
+done:
+ if (ret)
+ dev_err(dev, "Cannot create dev attributes ret=%d\n", ret);
+ return ret;
+};
+
+static const struct of_device_id of_fsl_qman_ids[] = {
+ {
+ .compatible = "fsl,qman",
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, of_fsl_qman_ids);
+
+static struct platform_driver of_fsl_qman_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_fsl_qman_ids,
+ },
+ .probe = of_fsl_qman_probe,
+ .remove = of_fsl_qman_remove,
+};
+
+module_platform_driver(of_fsl_qman_driver);
+
+#endif /* CONFIG_SYSFS */
diff --git a/drivers/soc/freescale/qman.h b/drivers/soc/freescale/qman.h
new file mode 100644
index 0000000..f65588f
--- /dev/null
+++ b/drivers/soc/freescale/qman.h
@@ -0,0 +1,1302 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qman_priv.h"
+
+/***************************/
+/* Portal register assists */
+/***************************/
+
+/* Cache-inhibited register offsets */
+#define QM_REG_EQCR_PI_CINH 0x0000
+#define QM_REG_EQCR_CI_CINH 0x0004
+#define QM_REG_EQCR_ITR 0x0008
+#define QM_REG_DQRR_PI_CINH 0x0040
+#define QM_REG_DQRR_CI_CINH 0x0044
+#define QM_REG_DQRR_ITR 0x0048
+#define QM_REG_DQRR_DCAP 0x0050
+#define QM_REG_DQRR_SDQCR 0x0054
+#define QM_REG_DQRR_VDQCR 0x0058
+#define QM_REG_DQRR_PDQCR 0x005c
+#define QM_REG_MR_PI_CINH 0x0080
+#define QM_REG_MR_CI_CINH 0x0084
+#define QM_REG_MR_ITR 0x0088
+#define QM_REG_CFG 0x0100
+#define QM_REG_ISR 0x0e00
+#define QM_REG_IIR 0x0e0c
+#define QM_REG_ITPR 0x0e14
+
+/* Cache-enabled register offsets */
+#define QM_CL_EQCR 0x0000
+#define QM_CL_DQRR 0x1000
+#define QM_CL_MR 0x2000
+#define QM_CL_EQCR_PI_CENA 0x3000
+#define QM_CL_EQCR_CI_CENA 0x3100
+#define QM_CL_DQRR_PI_CENA 0x3200
+#define QM_CL_DQRR_CI_CENA 0x3300
+#define QM_CL_MR_PI_CENA 0x3400
+#define QM_CL_MR_CI_CENA 0x3500
+#define QM_CL_CR 0x3800
+#define QM_CL_RR0 0x3900
+#define QM_CL_RR1 0x3940
+
+/* BTW, the drivers (and h/w programming model) already obtain the required
+ * synchronisation for portal accesses via lwsync(), hwsync(), and
+ * data-dependencies. Use of barrier()s or other order-preserving primitives
+ * simply degrade performance. Hence the use of the __raw_*() interfaces, which
+ * simply ensure that the compiler treats the portal registers as volatile (ie.
+ * non-coherent). */
+
+/* Cache-inhibited register access. */
+#define __qm_in(qm, o) __raw_readl((qm)->addr_ci + (o))
+#define __qm_out(qm, o, val) __raw_writel((val), (qm)->addr_ci + (o))
+#define qm_in(reg) __qm_in(&portal->addr, QM_REG_##reg)
+#define qm_out(reg, val) __qm_out(&portal->addr, QM_REG_##reg, val)
+
+/* Cache-enabled (index) register access */
+#define __qm_cl_touch_ro(qm, o) dcbt_ro((qm)->addr_ce + (o))
+#define __qm_cl_touch_rw(qm, o) dcbt_rw((qm)->addr_ce + (o))
+#define __qm_cl_in(qm, o) __raw_readl((qm)->addr_ce + (o))
+#define __qm_cl_out(qm, o, val) \
+ do { \
+ u32 *__tmpclout = (qm)->addr_ce + (o); \
+ __raw_writel((val), __tmpclout); \
+ dcbf(__tmpclout); \
+ } while (0)
+#define __qm_cl_invalidate(qm, o) dcbi((qm)->addr_ce + (o))
+#define qm_cl_touch_ro(reg) __qm_cl_touch_ro(&portal->addr, QM_CL_##reg##_CENA)
+#define qm_cl_touch_rw(reg) __qm_cl_touch_rw(&portal->addr, QM_CL_##reg##_CENA)
+#define qm_cl_in(reg) __qm_cl_in(&portal->addr, QM_CL_##reg##_CENA)
+#define qm_cl_out(reg, val) __qm_cl_out(&portal->addr, QM_CL_##reg##_CENA, val)
+#define qm_cl_invalidate(reg)\
+ __qm_cl_invalidate(&portal->addr, QM_CL_##reg##_CENA)
+
+/* Cache-enabled ring access */
+#define qm_cl(base, idx) ((void *)base + ((idx) << 6))
+
+/* Cyclic helper for rings. FIXME: once we are able to do fine-grain perf
+ * analysis, look at using the "extra" bit in the ring index registers to avoid
+ * cyclic issues. */
+static inline u8 qm_cyc_diff(u8 ringsize, u8 first, u8 last)
+{
+ /* 'first' is included, 'last' is excluded */
+ if (first <= last)
+ return last - first;
+ return ringsize + last - first;
+}
+
+/* Portal modes.
+ * Enum types;
+ * pmode == production mode
+ * cmode == consumption mode,
+ * dmode == h/w dequeue mode.
+ * Enum values use 3 letter codes. First letter matches the portal mode,
+ * remaining two letters indicate;
+ * ci == cache-inhibited portal register
+ * ce == cache-enabled portal register
+ * vb == in-band valid-bit (cache-enabled)
+ * dc == DCA (Discrete Consumption Acknowledgement), DQRR-only
+ * As for "enum qm_dqrr_dmode", it should be self-explanatory.
+ */
+enum qm_eqcr_pmode { /* matches QCSP_CFG::EPM */
+ qm_eqcr_pci = 0, /* PI index, cache-inhibited */
+ qm_eqcr_pce = 1, /* PI index, cache-enabled */
+ qm_eqcr_pvb = 2 /* valid-bit */
+};
+enum qm_dqrr_dmode { /* matches QCSP_CFG::DP */
+ qm_dqrr_dpush = 0, /* SDQCR + VDQCR */
+ qm_dqrr_dpull = 1 /* PDQCR */
+};
+enum qm_dqrr_pmode { /* s/w-only */
+ qm_dqrr_pci, /* reads DQRR_PI_CINH */
+ qm_dqrr_pce, /* reads DQRR_PI_CENA */
+ qm_dqrr_pvb /* reads valid-bit */
+};
+enum qm_dqrr_cmode { /* matches QCSP_CFG::DCM */
+ qm_dqrr_cci = 0, /* CI index, cache-inhibited */
+ qm_dqrr_cce = 1, /* CI index, cache-enabled */
+ qm_dqrr_cdc = 2 /* Discrete Consumption Acknowledgement */
+};
+enum qm_mr_pmode { /* s/w-only */
+ qm_mr_pci, /* reads MR_PI_CINH */
+ qm_mr_pce, /* reads MR_PI_CENA */
+ qm_mr_pvb /* reads valid-bit */
+};
+enum qm_mr_cmode { /* matches QCSP_CFG::MM */
+ qm_mr_cci = 0, /* CI index, cache-inhibited */
+ qm_mr_cce = 1 /* CI index, cache-enabled */
+};
+
+
+/* ------------------------- */
+/* --- Portal structures --- */
+
+#define QM_EQCR_SIZE 8
+#define QM_DQRR_SIZE 16
+#define QM_MR_SIZE 8
+
+struct qm_eqcr {
+ struct qm_eqcr_entry *ring, *cursor;
+ u8 ci, available, ithresh, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ u32 busy;
+ enum qm_eqcr_pmode pmode;
+#endif
+};
+
+struct qm_dqrr {
+ const struct qm_dqrr_entry *ring, *cursor;
+ u8 pi, ci, fill, ithresh, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ enum qm_dqrr_dmode dmode;
+ enum qm_dqrr_pmode pmode;
+ enum qm_dqrr_cmode cmode;
+#endif
+};
+
+struct qm_mr {
+ const struct qm_mr_entry *ring, *cursor;
+ u8 pi, ci, fill, ithresh, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ enum qm_mr_pmode pmode;
+ enum qm_mr_cmode cmode;
+#endif
+};
+
+struct qm_mc {
+ struct qm_mc_command *cr;
+ struct qm_mc_result *rr;
+ u8 rridx, vbit;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ enum {
+ /* Can be _mc_start()ed */
+ qman_mc_idle,
+ /* Can be _mc_commit()ed or _mc_abort()ed */
+ qman_mc_user,
+ /* Can only be _mc_retry()ed */
+ qman_mc_hw
+ } state;
+#endif
+};
+
+#define QM_PORTAL_ALIGNMENT ____cacheline_aligned
+
+struct qm_addr {
+ void __iomem *addr_ce; /* cache-enabled */
+ void __iomem *addr_ci; /* cache-inhibited */
+};
+
+struct qm_portal {
+ /* In the non-CONFIG_FSL_DPA_CHECKING case, the following stuff up to
+ * and including 'mc' fits within a cacheline (yay!). The 'config' part
+ * is setup-only, so isn't a cause for a concern. In other words, don't
+ * rearrange this structure on a whim, there be dragons ... */
+ struct qm_addr addr;
+ struct qm_eqcr eqcr;
+ struct qm_dqrr dqrr;
+ struct qm_mr mr;
+ struct qm_mc mc;
+} QM_PORTAL_ALIGNMENT;
+
+
+/* ---------------- */
+/* --- EQCR API --- */
+
+/* Bit-wise logic to wrap a ring pointer by clearing the "carry bit" */
+#define EQCR_CARRYCLEAR(p) \
+ (void *)((unsigned long)(p) & (~(unsigned long)(QM_EQCR_SIZE << 6)))
+
+/* Bit-wise logic to convert a ring pointer to a ring index */
+static inline u8 EQCR_PTR2IDX(struct qm_eqcr_entry *e)
+{
+ return ((uintptr_t)e >> 6) & (QM_EQCR_SIZE - 1);
+}
+
+/* Increment the 'cursor' ring pointer, taking 'vbit' into account */
+static inline void EQCR_INC(struct qm_eqcr *eqcr)
+{
+ /* NB: this is odd-looking, but experiments show that it generates fast
+ * code with essentially no branching overheads. We increment to the
+ * next EQCR pointer and handle overflow and 'vbit'. */
+ struct qm_eqcr_entry *partial = eqcr->cursor + 1;
+ eqcr->cursor = EQCR_CARRYCLEAR(partial);
+ if (partial != eqcr->cursor)
+ eqcr->vbit ^= QM_EQCR_VERB_VBIT;
+}
+
+static inline int qm_eqcr_init(struct qm_portal *portal,
+ enum qm_eqcr_pmode pmode,
+ unsigned int eq_stash_thresh,
+ int eq_stash_prio)
+{
+ /* This use of 'register', as well as all other occurrences, is because
+ * it has been observed to generate much faster code with gcc than is
+ * otherwise the case. */
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ u32 cfg;
+ u8 pi;
+
+ eqcr->ring = portal->addr.addr_ce + QM_CL_EQCR;
+ eqcr->ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1);
+ qm_cl_invalidate(EQCR_CI);
+ pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1);
+ eqcr->cursor = eqcr->ring + pi;
+ eqcr->vbit = (qm_in(EQCR_PI_CINH) & QM_EQCR_SIZE) ?
+ QM_EQCR_VERB_VBIT : 0;
+ eqcr->available = QM_EQCR_SIZE - 1 -
+ qm_cyc_diff(QM_EQCR_SIZE, eqcr->ci, pi);
+ eqcr->ithresh = qm_in(EQCR_ITR);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 0;
+ eqcr->pmode = pmode;
+#endif
+ cfg = (qm_in(CFG) & 0x00ffffff) |
+ (eq_stash_thresh << 28) | /* QCSP_CFG: EST */
+ (eq_stash_prio << 26) | /* QCSP_CFG: EP */
+ ((pmode & 0x3) << 24); /* QCSP_CFG::EPM */
+ qm_out(CFG, cfg);
+ return 0;
+}
+
+static inline unsigned int qm_eqcr_get_ci_stashing(struct qm_portal *portal)
+{
+ return (qm_in(CFG) >> 28) & 0x7;
+}
+
+static inline void qm_eqcr_finish(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ u8 pi = qm_in(EQCR_PI_CINH) & (QM_EQCR_SIZE - 1);
+ u8 ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1);
+
+ DPA_ASSERT(!eqcr->busy);
+ if (pi != EQCR_PTR2IDX(eqcr->cursor))
+ pr_crit("losing uncommited EQCR entries\n");
+ if (ci != eqcr->ci)
+ pr_crit("missing existing EQCR completions\n");
+ if (eqcr->ci != EQCR_PTR2IDX(eqcr->cursor))
+ pr_crit("EQCR destroyed unquiesced\n");
+}
+
+static inline struct qm_eqcr_entry *qm_eqcr_start_no_stash(struct qm_portal
+ *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ DPA_ASSERT(!eqcr->busy);
+ if (!eqcr->available)
+ return NULL;
+
+
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 1;
+#endif
+ dcbz_64(eqcr->cursor);
+ return eqcr->cursor;
+}
+
+static inline struct qm_eqcr_entry *qm_eqcr_start_stash(struct qm_portal
+ *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ u8 diff, old_ci;
+
+ DPA_ASSERT(!eqcr->busy);
+ if (!eqcr->available) {
+ old_ci = eqcr->ci;
+ eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1);
+ diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci);
+ eqcr->available += diff;
+ if (!diff)
+ return NULL;
+ }
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 1;
+#endif
+ dcbz_64(eqcr->cursor);
+ return eqcr->cursor;
+}
+
+static inline void qm_eqcr_abort(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr;
+ DPA_ASSERT(eqcr->busy);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 0;
+#endif
+}
+
+static inline struct qm_eqcr_entry *qm_eqcr_pend_and_next(
+ struct qm_portal *portal, u8 myverb)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ DPA_ASSERT(eqcr->busy);
+ DPA_ASSERT(eqcr->pmode != qm_eqcr_pvb);
+ if (eqcr->available == 1)
+ return NULL;
+ eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit;
+ dcbf(eqcr->cursor);
+ EQCR_INC(eqcr);
+ eqcr->available--;
+ dcbz_64(eqcr->cursor);
+ return eqcr->cursor;
+}
+
+#define EQCR_COMMIT_CHECKS(eqcr) \
+do { \
+ DPA_ASSERT(eqcr->busy); \
+ DPA_ASSERT(eqcr->cursor->orp == (eqcr->cursor->orp & 0x00ffffff)); \
+ DPA_ASSERT(eqcr->cursor->fqid == (eqcr->cursor->fqid & 0x00ffffff)); \
+} while (0)
+
+static inline void qm_eqcr_pci_commit(struct qm_portal *portal, u8 myverb)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ EQCR_COMMIT_CHECKS(eqcr);
+ DPA_ASSERT(eqcr->pmode == qm_eqcr_pci);
+ eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit;
+ EQCR_INC(eqcr);
+ eqcr->available--;
+ dcbf(eqcr->cursor);
+ hwsync();
+ qm_out(EQCR_PI_CINH, EQCR_PTR2IDX(eqcr->cursor));
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 0;
+#endif
+}
+
+static inline void qm_eqcr_pce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr;
+ DPA_ASSERT(eqcr->pmode == qm_eqcr_pce);
+ qm_cl_invalidate(EQCR_PI);
+ qm_cl_touch_rw(EQCR_PI);
+}
+
+static inline void qm_eqcr_pce_commit(struct qm_portal *portal, u8 myverb)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ EQCR_COMMIT_CHECKS(eqcr);
+ DPA_ASSERT(eqcr->pmode == qm_eqcr_pce);
+ eqcr->cursor->__dont_write_directly__verb = myverb | eqcr->vbit;
+ EQCR_INC(eqcr);
+ eqcr->available--;
+ dcbf(eqcr->cursor);
+ lwsync();
+ qm_cl_out(EQCR_PI, EQCR_PTR2IDX(eqcr->cursor));
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 0;
+#endif
+}
+
+static inline void qm_eqcr_pvb_commit(struct qm_portal *portal, u8 myverb)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ struct qm_eqcr_entry *eqcursor;
+ EQCR_COMMIT_CHECKS(eqcr);
+ DPA_ASSERT(eqcr->pmode == qm_eqcr_pvb);
+ lwsync();
+ eqcursor = eqcr->cursor;
+ eqcursor->__dont_write_directly__verb = myverb | eqcr->vbit;
+ dcbf(eqcursor);
+ EQCR_INC(eqcr);
+ eqcr->available--;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ eqcr->busy = 0;
+#endif
+}
+
+static inline u8 qm_eqcr_cci_update(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ u8 diff, old_ci = eqcr->ci;
+ eqcr->ci = qm_in(EQCR_CI_CINH) & (QM_EQCR_SIZE - 1);
+ diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci);
+ eqcr->available += diff;
+ return diff;
+}
+
+static inline void qm_eqcr_cce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_eqcr *eqcr = &portal->eqcr;
+ qm_cl_touch_ro(EQCR_CI);
+}
+
+static inline u8 qm_eqcr_cce_update(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ u8 diff, old_ci = eqcr->ci;
+ eqcr->ci = qm_cl_in(EQCR_CI) & (QM_EQCR_SIZE - 1);
+ qm_cl_invalidate(EQCR_CI);
+ diff = qm_cyc_diff(QM_EQCR_SIZE, old_ci, eqcr->ci);
+ eqcr->available += diff;
+ return diff;
+}
+
+static inline u8 qm_eqcr_get_ithresh(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ return eqcr->ithresh;
+}
+
+static inline void qm_eqcr_set_ithresh(struct qm_portal *portal, u8 ithresh)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ eqcr->ithresh = ithresh;
+ qm_out(EQCR_ITR, ithresh);
+}
+
+static inline u8 qm_eqcr_get_avail(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ return eqcr->available;
+}
+
+static inline u8 qm_eqcr_get_fill(struct qm_portal *portal)
+{
+ register struct qm_eqcr *eqcr = &portal->eqcr;
+ return QM_EQCR_SIZE - 1 - eqcr->available;
+}
+
+
+/* ---------------- */
+/* --- DQRR API --- */
+
+/* FIXME: many possible improvements;
+ * - look at changing the API to use pointer rather than index parameters now
+ * that 'cursor' is a pointer,
+ * - consider moving other parameters to pointer if it could help (ci)
+ */
+
+#define DQRR_CARRYCLEAR(p) \
+ (void *)((unsigned long)(p) & (~(unsigned long)(QM_DQRR_SIZE << 6)))
+
+static inline u8 DQRR_PTR2IDX(const struct qm_dqrr_entry *e)
+{
+ return ((uintptr_t)e >> 6) & (QM_DQRR_SIZE - 1);
+}
+
+static inline const struct qm_dqrr_entry *DQRR_INC(
+ const struct qm_dqrr_entry *e)
+{
+ return DQRR_CARRYCLEAR(e + 1);
+}
+
+static inline void qm_dqrr_set_maxfill(struct qm_portal *portal, u8 mf)
+{
+ qm_out(CFG, (qm_in(CFG) & 0xff0fffff) |
+ ((mf & (QM_DQRR_SIZE - 1)) << 20));
+}
+
+static inline int qm_dqrr_init(struct qm_portal *portal,
+ const struct qm_portal_config *config,
+ enum qm_dqrr_dmode dmode,
+ __maybe_unused enum qm_dqrr_pmode pmode,
+ enum qm_dqrr_cmode cmode, u8 max_fill)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ u32 cfg;
+
+ /* Make sure the DQRR will be idle when we enable */
+ qm_out(DQRR_SDQCR, 0);
+ qm_out(DQRR_VDQCR, 0);
+ qm_out(DQRR_PDQCR, 0);
+ dqrr->ring = portal->addr.addr_ce + QM_CL_DQRR;
+ dqrr->pi = qm_in(DQRR_PI_CINH) & (QM_DQRR_SIZE - 1);
+ dqrr->ci = qm_in(DQRR_CI_CINH) & (QM_DQRR_SIZE - 1);
+ dqrr->cursor = dqrr->ring + dqrr->ci;
+ dqrr->fill = qm_cyc_diff(QM_DQRR_SIZE, dqrr->ci, dqrr->pi);
+ dqrr->vbit = (qm_in(DQRR_PI_CINH) & QM_DQRR_SIZE) ?
+ QM_DQRR_VERB_VBIT : 0;
+ dqrr->ithresh = qm_in(DQRR_ITR);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ dqrr->dmode = dmode;
+ dqrr->pmode = pmode;
+ dqrr->cmode = cmode;
+#endif
+ /* Invalidate every ring entry before beginning */
+ for (cfg = 0; cfg < QM_DQRR_SIZE; cfg++)
+ dcbi(qm_cl(dqrr->ring, cfg));
+ cfg = (qm_in(CFG) & 0xff000f00) |
+ ((max_fill & (QM_DQRR_SIZE - 1)) << 20) | /* DQRR_MF */
+ ((dmode & 1) << 18) | /* DP */
+ ((cmode & 3) << 16) | /* DCM */
+ 0xa0 | /* RE+SE */
+ (0 ? 0x40 : 0) | /* Ignore RP */
+ (0 ? 0x10 : 0); /* Ignore SP */
+ qm_out(CFG, cfg);
+ qm_dqrr_set_maxfill(portal, max_fill);
+ return 0;
+}
+
+static inline void qm_dqrr_finish(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if ((dqrr->cmode != qm_dqrr_cdc) &&
+ (dqrr->ci != DQRR_PTR2IDX(dqrr->cursor)))
+ pr_crit("Ignoring completed DQRR entries\n");
+#endif
+}
+
+static inline const struct qm_dqrr_entry *qm_dqrr_current(
+ struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ if (!dqrr->fill)
+ return NULL;
+ return dqrr->cursor;
+}
+
+static inline u8 qm_dqrr_cursor(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ return DQRR_PTR2IDX(dqrr->cursor);
+}
+
+static inline u8 qm_dqrr_next(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->fill);
+ dqrr->cursor = DQRR_INC(dqrr->cursor);
+ return --dqrr->fill;
+}
+
+static inline u8 qm_dqrr_pci_update(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ u8 diff, old_pi = dqrr->pi;
+ DPA_ASSERT(dqrr->pmode == qm_dqrr_pci);
+ dqrr->pi = qm_in(DQRR_PI_CINH) & (QM_DQRR_SIZE - 1);
+ diff = qm_cyc_diff(QM_DQRR_SIZE, old_pi, dqrr->pi);
+ dqrr->fill += diff;
+ return diff;
+}
+
+static inline void qm_dqrr_pce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->pmode == qm_dqrr_pce);
+ qm_cl_invalidate(DQRR_PI);
+ qm_cl_touch_ro(DQRR_PI);
+}
+
+static inline u8 qm_dqrr_pce_update(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ u8 diff, old_pi = dqrr->pi;
+ DPA_ASSERT(dqrr->pmode == qm_dqrr_pce);
+ dqrr->pi = qm_cl_in(DQRR_PI) & (QM_DQRR_SIZE - 1);
+ diff = qm_cyc_diff(QM_DQRR_SIZE, old_pi, dqrr->pi);
+ dqrr->fill += diff;
+ return diff;
+}
+
+static inline void qm_dqrr_pvb_update(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ const struct qm_dqrr_entry *res = qm_cl(dqrr->ring, dqrr->pi);
+ DPA_ASSERT(dqrr->pmode == qm_dqrr_pvb);
+ /* when accessing 'verb', use __raw_readb() to ensure that compiler
+ * inlining doesn't try to optimise out "excess reads". */
+ if ((__raw_readb(&res->verb) & QM_DQRR_VERB_VBIT) == dqrr->vbit) {
+ dqrr->pi = (dqrr->pi + 1) & (QM_DQRR_SIZE - 1);
+ if (!dqrr->pi)
+ dqrr->vbit ^= QM_DQRR_VERB_VBIT;
+ dqrr->fill++;
+ }
+}
+
+static inline void qm_dqrr_cci_consume(struct qm_portal *portal, u8 num)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cci);
+ dqrr->ci = (dqrr->ci + num) & (QM_DQRR_SIZE - 1);
+ qm_out(DQRR_CI_CINH, dqrr->ci);
+}
+
+static inline void qm_dqrr_cci_consume_to_current(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cci);
+ dqrr->ci = DQRR_PTR2IDX(dqrr->cursor);
+ qm_out(DQRR_CI_CINH, dqrr->ci);
+}
+
+static inline void qm_dqrr_cce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cce);
+ qm_cl_invalidate(DQRR_CI);
+ qm_cl_touch_rw(DQRR_CI);
+}
+
+static inline void qm_dqrr_cce_consume(struct qm_portal *portal, u8 num)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cce);
+ dqrr->ci = (dqrr->ci + num) & (QM_DQRR_SIZE - 1);
+ qm_cl_out(DQRR_CI, dqrr->ci);
+}
+
+static inline void qm_dqrr_cce_consume_to_current(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cce);
+ dqrr->ci = DQRR_PTR2IDX(dqrr->cursor);
+ qm_cl_out(DQRR_CI, dqrr->ci);
+}
+
+static inline void qm_dqrr_cdc_consume_1(struct qm_portal *portal, u8 idx,
+ int park)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ DPA_ASSERT(idx < QM_DQRR_SIZE);
+ qm_out(DQRR_DCAP, (0 << 8) | /* S */
+ ((park ? 1 : 0) << 6) | /* PK */
+ idx); /* DCAP_CI */
+}
+
+static inline void qm_dqrr_cdc_consume_1ptr(struct qm_portal *portal,
+ const struct qm_dqrr_entry *dq,
+ int park)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ u8 idx = DQRR_PTR2IDX(dq);
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ DPA_ASSERT((dqrr->ring + idx) == dq);
+ DPA_ASSERT(idx < QM_DQRR_SIZE);
+ qm_out(DQRR_DCAP, (0 << 8) | /* DQRR_DCAP::S */
+ ((park ? 1 : 0) << 6) | /* DQRR_DCAP::PK */
+ idx); /* DQRR_DCAP::DCAP_CI */
+}
+
+static inline void qm_dqrr_cdc_consume_n(struct qm_portal *portal, u16 bitmask)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ qm_out(DQRR_DCAP, (1 << 8) | /* DQRR_DCAP::S */
+ ((u32)bitmask << 16)); /* DQRR_DCAP::DCAP_CI */
+}
+
+static inline u8 qm_dqrr_cdc_cci(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ return qm_in(DQRR_CI_CINH) & (QM_DQRR_SIZE - 1);
+}
+
+static inline void qm_dqrr_cdc_cce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ qm_cl_invalidate(DQRR_CI);
+ qm_cl_touch_ro(DQRR_CI);
+}
+
+static inline u8 qm_dqrr_cdc_cce(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode == qm_dqrr_cdc);
+ return qm_cl_in(DQRR_CI) & (QM_DQRR_SIZE - 1);
+}
+
+static inline u8 qm_dqrr_get_ci(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc);
+ return dqrr->ci;
+}
+
+static inline void qm_dqrr_park(struct qm_portal *portal, u8 idx)
+{
+ __maybe_unused register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc);
+ qm_out(DQRR_DCAP, (0 << 8) | /* S */
+ (1 << 6) | /* PK */
+ (idx & (QM_DQRR_SIZE - 1))); /* DCAP_CI */
+}
+
+static inline void qm_dqrr_park_current(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ DPA_ASSERT(dqrr->cmode != qm_dqrr_cdc);
+ qm_out(DQRR_DCAP, (0 << 8) | /* S */
+ (1 << 6) | /* PK */
+ DQRR_PTR2IDX(dqrr->cursor)); /* DCAP_CI */
+}
+
+static inline void qm_dqrr_sdqcr_set(struct qm_portal *portal, u32 sdqcr)
+{
+ qm_out(DQRR_SDQCR, sdqcr);
+}
+
+static inline u32 qm_dqrr_sdqcr_get(struct qm_portal *portal)
+{
+ return qm_in(DQRR_SDQCR);
+}
+
+static inline void qm_dqrr_vdqcr_set(struct qm_portal *portal, u32 vdqcr)
+{
+ qm_out(DQRR_VDQCR, vdqcr);
+}
+
+static inline u32 qm_dqrr_vdqcr_get(struct qm_portal *portal)
+{
+ return qm_in(DQRR_VDQCR);
+}
+
+static inline void qm_dqrr_pdqcr_set(struct qm_portal *portal, u32 pdqcr)
+{
+ qm_out(DQRR_PDQCR, pdqcr);
+}
+
+static inline u32 qm_dqrr_pdqcr_get(struct qm_portal *portal)
+{
+ return qm_in(DQRR_PDQCR);
+}
+
+static inline u8 qm_dqrr_get_ithresh(struct qm_portal *portal)
+{
+ register struct qm_dqrr *dqrr = &portal->dqrr;
+ return dqrr->ithresh;
+}
+
+static inline void qm_dqrr_set_ithresh(struct qm_portal *portal, u8 ithresh)
+{
+ qm_out(DQRR_ITR, ithresh);
+}
+
+static inline u8 qm_dqrr_get_maxfill(struct qm_portal *portal)
+{
+ return (qm_in(CFG) & 0x00f00000) >> 20;
+}
+
+
+/* -------------- */
+/* --- MR API --- */
+
+#define MR_CARRYCLEAR(p) \
+ (void *)((unsigned long)(p) & (~(unsigned long)(QM_MR_SIZE << 6)))
+
+static inline u8 MR_PTR2IDX(const struct qm_mr_entry *e)
+{
+ return ((uintptr_t)e >> 6) & (QM_MR_SIZE - 1);
+}
+
+static inline const struct qm_mr_entry *MR_INC(const struct qm_mr_entry *e)
+{
+ return MR_CARRYCLEAR(e + 1);
+}
+
+static inline int qm_mr_init(struct qm_portal *portal, enum qm_mr_pmode pmode,
+ enum qm_mr_cmode cmode)
+{
+ register struct qm_mr *mr = &portal->mr;
+ u32 cfg;
+
+ mr->ring = portal->addr.addr_ce + QM_CL_MR;
+ mr->pi = qm_in(MR_PI_CINH) & (QM_MR_SIZE - 1);
+ mr->ci = qm_in(MR_CI_CINH) & (QM_MR_SIZE - 1);
+ mr->cursor = mr->ring + mr->ci;
+ mr->fill = qm_cyc_diff(QM_MR_SIZE, mr->ci, mr->pi);
+ mr->vbit = (qm_in(MR_PI_CINH) & QM_MR_SIZE) ? QM_MR_VERB_VBIT : 0;
+ mr->ithresh = qm_in(MR_ITR);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mr->pmode = pmode;
+ mr->cmode = cmode;
+#endif
+ cfg = (qm_in(CFG) & 0xfffff0ff) |
+ ((cmode & 1) << 8); /* QCSP_CFG:MM */
+ qm_out(CFG, cfg);
+ return 0;
+}
+
+static inline void qm_mr_finish(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ if (mr->ci != MR_PTR2IDX(mr->cursor))
+ pr_crit("Ignoring completed MR entries\n");
+}
+
+static inline const struct qm_mr_entry *qm_mr_current(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ if (!mr->fill)
+ return NULL;
+ return mr->cursor;
+}
+
+static inline u8 qm_mr_cursor(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ return MR_PTR2IDX(mr->cursor);
+}
+
+static inline u8 qm_mr_next(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->fill);
+ mr->cursor = MR_INC(mr->cursor);
+ return --mr->fill;
+}
+
+static inline u8 qm_mr_pci_update(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ u8 diff, old_pi = mr->pi;
+ DPA_ASSERT(mr->pmode == qm_mr_pci);
+ mr->pi = qm_in(MR_PI_CINH);
+ diff = qm_cyc_diff(QM_MR_SIZE, old_pi, mr->pi);
+ mr->fill += diff;
+ return diff;
+}
+
+static inline void qm_mr_pce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->pmode == qm_mr_pce);
+ qm_cl_invalidate(MR_PI);
+ qm_cl_touch_ro(MR_PI);
+}
+
+static inline u8 qm_mr_pce_update(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ u8 diff, old_pi = mr->pi;
+ DPA_ASSERT(mr->pmode == qm_mr_pce);
+ mr->pi = qm_cl_in(MR_PI) & (QM_MR_SIZE - 1);
+ diff = qm_cyc_diff(QM_MR_SIZE, old_pi, mr->pi);
+ mr->fill += diff;
+ return diff;
+}
+
+static inline void qm_mr_pvb_update(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ const struct qm_mr_entry *res = qm_cl(mr->ring, mr->pi);
+ DPA_ASSERT(mr->pmode == qm_mr_pvb);
+ /* when accessing 'verb', use __raw_readb() to ensure that compiler
+ * inlining doesn't try to optimise out "excess reads". */
+ if ((__raw_readb(&res->verb) & QM_MR_VERB_VBIT) == mr->vbit) {
+ mr->pi = (mr->pi + 1) & (QM_MR_SIZE - 1);
+ if (!mr->pi)
+ mr->vbit ^= QM_MR_VERB_VBIT;
+ mr->fill++;
+ res = MR_INC(res);
+ }
+ dcbit_ro(res);
+}
+
+static inline void qm_mr_cci_consume(struct qm_portal *portal, u8 num)
+{
+ register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->cmode == qm_mr_cci);
+ mr->ci = (mr->ci + num) & (QM_MR_SIZE - 1);
+ qm_out(MR_CI_CINH, mr->ci);
+}
+
+static inline void qm_mr_cci_consume_to_current(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->cmode == qm_mr_cci);
+ mr->ci = MR_PTR2IDX(mr->cursor);
+ qm_out(MR_CI_CINH, mr->ci);
+}
+
+static inline void qm_mr_cce_prefetch(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->cmode == qm_mr_cce);
+ qm_cl_invalidate(MR_CI);
+ qm_cl_touch_rw(MR_CI);
+}
+
+static inline void qm_mr_cce_consume(struct qm_portal *portal, u8 num)
+{
+ register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->cmode == qm_mr_cce);
+ mr->ci = (mr->ci + num) & (QM_MR_SIZE - 1);
+ qm_cl_out(MR_CI, mr->ci);
+}
+
+static inline void qm_mr_cce_consume_to_current(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ DPA_ASSERT(mr->cmode == qm_mr_cce);
+ mr->ci = MR_PTR2IDX(mr->cursor);
+ qm_cl_out(MR_CI, mr->ci);
+}
+
+static inline u8 qm_mr_get_ci(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ return mr->ci;
+}
+
+static inline u8 qm_mr_get_ithresh(struct qm_portal *portal)
+{
+ register struct qm_mr *mr = &portal->mr;
+ return mr->ithresh;
+}
+
+static inline void qm_mr_set_ithresh(struct qm_portal *portal, u8 ithresh)
+{
+ qm_out(MR_ITR, ithresh);
+}
+
+
+/* ------------------------------ */
+/* --- Management command API --- */
+
+static inline int qm_mc_init(struct qm_portal *portal)
+{
+ register struct qm_mc *mc = &portal->mc;
+ mc->cr = portal->addr.addr_ce + QM_CL_CR;
+ mc->rr = portal->addr.addr_ce + QM_CL_RR0;
+ mc->rridx = (__raw_readb(&mc->cr->__dont_write_directly__verb) &
+ QM_MCC_VERB_VBIT) ? 0 : 1;
+ mc->vbit = mc->rridx ? QM_MCC_VERB_VBIT : 0;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = qman_mc_idle;
+#endif
+ return 0;
+}
+
+static inline void qm_mc_finish(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == qman_mc_idle);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (mc->state != qman_mc_idle)
+ pr_crit("Losing incomplete MC command\n");
+#endif
+}
+
+static inline struct qm_mc_command *qm_mc_start(struct qm_portal *portal)
+{
+ register struct qm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == qman_mc_idle);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = qman_mc_user;
+#endif
+ dcbz_64(mc->cr);
+ return mc->cr;
+}
+
+static inline void qm_mc_abort(struct qm_portal *portal)
+{
+ __maybe_unused register struct qm_mc *mc = &portal->mc;
+ DPA_ASSERT(mc->state == qman_mc_user);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = qman_mc_idle;
+#endif
+}
+
+static inline void qm_mc_commit(struct qm_portal *portal, u8 myverb)
+{
+ register struct qm_mc *mc = &portal->mc;
+ struct qm_mc_result *rr = mc->rr + mc->rridx;
+ DPA_ASSERT(mc->state == qman_mc_user);
+ lwsync();
+ mc->cr->__dont_write_directly__verb = myverb | mc->vbit;
+ dcbf(mc->cr);
+ dcbit_ro(rr);
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = qman_mc_hw;
+#endif
+}
+
+static inline struct qm_mc_result *qm_mc_result(struct qm_portal *portal)
+{
+ register struct qm_mc *mc = &portal->mc;
+ struct qm_mc_result *rr = mc->rr + mc->rridx;
+ DPA_ASSERT(mc->state == qman_mc_hw);
+ /* The inactive response register's verb byte always returns zero until
+ * its command is submitted and completed. This includes the valid-bit,
+ * in case you were wondering... */
+ if (!__raw_readb(&rr->verb)) {
+ dcbit_ro(rr);
+ return NULL;
+ }
+ mc->rridx ^= 1;
+ mc->vbit ^= QM_MCC_VERB_VBIT;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ mc->state = qman_mc_idle;
+#endif
+ return rr;
+}
+
+
+/* ------------------------------------- */
+/* --- Portal interrupt register API --- */
+
+static inline int qm_isr_init(__always_unused struct qm_portal *portal)
+{
+ return 0;
+}
+
+static inline void qm_isr_finish(__always_unused struct qm_portal *portal)
+{
+}
+
+static inline void qm_isr_set_iperiod(struct qm_portal *portal, u16 iperiod)
+{
+ qm_out(ITPR, iperiod);
+}
+
+static inline u32 __qm_isr_read(struct qm_portal *portal, enum qm_isr_reg n)
+{
+ return __qm_in(&portal->addr, QM_REG_ISR + (n << 2));
+}
+
+static inline void __qm_isr_write(struct qm_portal *portal, enum qm_isr_reg n,
+ u32 val)
+{
+ __qm_out(&portal->addr, QM_REG_ISR + (n << 2), val);
+}
+
+/* Cleanup FQs */
+static inline int qm_shutdown_fq(struct qm_portal **portal, int portal_count,
+ u32 fqid)
+{
+
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ u8 state;
+ int orl_empty, fq_empty, i, drain = 0;
+ u32 result;
+ u32 channel, wq;
+
+ /* Determine the state of the FQID */
+ mcc = qm_mc_start(portal[0]);
+ mcc->queryfq_np.fqid = fqid;
+ qm_mc_commit(portal[0], QM_MCC_VERB_QUERYFQ_NP);
+ while (!(mcr = qm_mc_result(portal[0])))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ_NP);
+ state = mcr->queryfq_np.state & QM_MCR_NP_STATE_MASK;
+ if (state == QM_MCR_NP_STATE_OOS)
+ return 0; /* Already OOS, no need to do anymore checks */
+
+ /* Query which channel the FQ is using */
+ mcc = qm_mc_start(portal[0]);
+ mcc->queryfq.fqid = fqid;
+ qm_mc_commit(portal[0], QM_MCC_VERB_QUERYFQ);
+ while (!(mcr = qm_mc_result(portal[0])))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ);
+
+ /* Need to store these since the MCR gets reused */
+ channel = mcr->queryfq.fqd.dest.channel;
+ wq = mcr->queryfq.fqd.dest.wq;
+
+ switch (state) {
+ case QM_MCR_NP_STATE_TEN_SCHED:
+ case QM_MCR_NP_STATE_TRU_SCHED:
+ case QM_MCR_NP_STATE_ACTIVE:
+ case QM_MCR_NP_STATE_PARKED:
+ orl_empty = 0;
+ mcc = qm_mc_start(portal[0]);
+ mcc->alterfq.fqid = fqid;
+ qm_mc_commit(portal[0], QM_MCC_VERB_ALTER_RETIRE);
+ while (!(mcr = qm_mc_result(portal[0])))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
+ QM_MCR_VERB_ALTER_RETIRE);
+ result = mcr->result; /* Make a copy as we reuse MCR below */
+
+ if (result == QM_MCR_RESULT_PENDING) {
+ /* Need to wait for the FQRN in the message ring, which
+ will only occur once the FQ has been drained. In
+ order for the FQ to drain the portal needs to be set
+ to dequeue from the channel the FQ is scheduled on */
+ const struct qm_mr_entry *msg;
+ const struct qm_dqrr_entry *dqrr = NULL;
+ int found_fqrn = 0;
+ u16 dequeue_wq = 0;
+
+ /* Flag that we need to drain FQ */
+ drain = 1;
+
+ if (channel >= qm_channel_pool1 &&
+ channel < (qm_channel_pool1 + 15)) {
+ /* Pool channel, enable the bit in the portal */
+ dequeue_wq = (channel -
+ qm_channel_pool1 + 1)<<4 | wq;
+ } else if (channel < qm_channel_pool1) {
+ /* Dedicated channel */
+ dequeue_wq = wq;
+ } else {
+ pr_info("Cannot recover FQ 0x%x, it is "
+ "scheduled on channel 0x%x",
+ fqid, channel);
+ return -EBUSY;
+ }
+ /* Set the sdqcr to drain this channel */
+ if (channel < qm_channel_pool1)
+ for (i = 0; i < portal_count; i++)
+ qm_dqrr_sdqcr_set(portal[i],
+ QM_SDQCR_TYPE_ACTIVE |
+ QM_SDQCR_CHANNELS_DEDICATED);
+ else
+ for (i = 0; i < portal_count; i++)
+ qm_dqrr_sdqcr_set(
+ portal[i],
+ QM_SDQCR_TYPE_ACTIVE |
+ QM_SDQCR_CHANNELS_POOL_CONV
+ (channel));
+ while (!found_fqrn) {
+ /* Keep draining DQRR while checking the MR*/
+ for (i = 0; i < portal_count; i++) {
+ qm_dqrr_pvb_update(portal[i]);
+ dqrr = qm_dqrr_current(portal[i]);
+ while (dqrr) {
+ qm_dqrr_cdc_consume_1ptr(
+ portal[i], dqrr, 0);
+ qm_dqrr_pvb_update(portal[i]);
+ qm_dqrr_next(portal[i]);
+ dqrr = qm_dqrr_current(
+ portal[i]);
+ }
+ /* Process message ring too */
+ qm_mr_pvb_update(portal[i]);
+ msg = qm_mr_current(portal[i]);
+ while (msg) {
+ if ((msg->verb &
+ QM_MR_VERB_TYPE_MASK)
+ == QM_MR_VERB_FQRN)
+ found_fqrn = 1;
+ qm_mr_next(portal[i]);
+ qm_mr_cci_consume_to_current(
+ portal[i]);
+ qm_mr_pvb_update(portal[i]);
+ msg = qm_mr_current(portal[i]);
+ }
+ cpu_relax();
+ }
+ }
+ }
+ if (result != QM_MCR_RESULT_OK &&
+ result != QM_MCR_RESULT_PENDING) {
+ /* error */
+ pr_err("qman_retire_fq failed on FQ 0x%x, result=0x%x\n",
+ fqid, result);
+ return -1;
+ }
+ if (!(mcr->alterfq.fqs & QM_MCR_FQS_ORLPRESENT)) {
+ /* ORL had no entries, no need to wait until the
+ ERNs come in */
+ orl_empty = 1;
+ }
+ /* Retirement succeeded, check to see if FQ needs
+ to be drained */
+ if (drain || mcr->alterfq.fqs & QM_MCR_FQS_NOTEMPTY) {
+ /* FQ is Not Empty, drain using volatile DQ commands */
+ fq_empty = 0;
+ do {
+ const struct qm_dqrr_entry *dqrr = NULL;
+ u32 vdqcr = fqid | QM_VDQCR_NUMFRAMES_SET(3);
+ qm_dqrr_vdqcr_set(portal[0], vdqcr);
+
+ /* Wait for a dequeue to occur */
+ while (dqrr == NULL) {
+ qm_dqrr_pvb_update(portal[0]);
+ dqrr = qm_dqrr_current(portal[0]);
+ if (!dqrr)
+ cpu_relax();
+ }
+ /* Process the dequeues, making sure to
+ empty the ring completely */
+ while (dqrr) {
+ if (dqrr->fqid == fqid &&
+ dqrr->stat & QM_DQRR_STAT_FQ_EMPTY)
+ fq_empty = 1;
+ qm_dqrr_cdc_consume_1ptr(portal[0],
+ dqrr, 0);
+ qm_dqrr_pvb_update(portal[0]);
+ qm_dqrr_next(portal[0]);
+ dqrr = qm_dqrr_current(portal[0]);
+ }
+ } while (fq_empty == 0);
+ }
+ for (i = 0; i < portal_count; i++)
+ qm_dqrr_sdqcr_set(portal[i], 0);
+
+ /* Wait for the ORL to have been completely drained */
+ while (orl_empty == 0) {
+ const struct qm_mr_entry *msg;
+ qm_mr_pvb_update(portal[0]);
+ msg = qm_mr_current(portal[0]);
+ while (msg) {
+ if ((msg->verb & QM_MR_VERB_TYPE_MASK) ==
+ QM_MR_VERB_FQRL)
+ orl_empty = 1;
+ qm_mr_next(portal[0]);
+ qm_mr_cci_consume_to_current(portal[0]);
+ qm_mr_pvb_update(portal[0]);
+ msg = qm_mr_current(portal[0]);
+ }
+ cpu_relax();
+ }
+ mcc = qm_mc_start(portal[0]);
+ mcc->alterfq.fqid = fqid;
+ qm_mc_commit(portal[0], QM_MCC_VERB_ALTER_OOS);
+ while (!(mcr = qm_mc_result(portal[0])))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
+ QM_MCR_VERB_ALTER_OOS);
+ if (mcr->result != QM_MCR_RESULT_OK) {
+ pr_err("OOS after drain Failed on FQID 0x%x, result 0x%x\n",
+ fqid, mcr->result);
+ return -1;
+ }
+ return 0;
+ case QM_MCR_NP_STATE_RETIRED:
+ /* Send OOS Command */
+ mcc = qm_mc_start(portal[0]);
+ mcc->alterfq.fqid = fqid;
+ qm_mc_commit(portal[0], QM_MCC_VERB_ALTER_OOS);
+ while (!(mcr = qm_mc_result(portal[0])))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
+ QM_MCR_VERB_ALTER_OOS);
+ if (mcr->result) {
+ pr_err("OOS Failed on FQID 0x%x\n", fqid);
+ return -1;
+ }
+ return 0;
+ case QM_MCR_NP_STATE_OOS:
+ /* Done */
+ return 0;
+ }
+ return -1;
+}
diff --git a/drivers/soc/freescale/qman_api.c b/drivers/soc/freescale/qman_api.c
new file mode 100644
index 0000000..2d980b3
--- /dev/null
+++ b/drivers/soc/freescale/qman_api.c
@@ -0,0 +1,2566 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qman.h"
+
+/* Compilation constants */
+#define DQRR_MAXFILL 15
+#define EQCR_ITHRESH 4 /* if EQCR congests, interrupt threshold */
+#define IRQNAME "QMan portal %d"
+#define MAX_IRQNAME 16 /* big enough for "QMan portal %d" */
+
+/* Divide 'n' by 'd', rounding down if 'r' is negative, rounding up if it's
+ * positive, and rounding to the closest value if it's zero. NB, this macro
+ * implicitly upgrades parameters to unsigned 64-bit, so feed it with types
+ * that are compatible with this. NB, these arguments should not be expressions
+ * unless it is safe for them to be evaluated multiple times. Eg. do not pass
+ * in "some_value++" as a parameter to the macro! */
+#define ROUNDING(n, d, r) \
+ (((r) < 0) ? div64_u64((n), (d)) : \
+ (((r) > 0) ? div64_u64(((n) + (d) - 1), (d)) : \
+ div64_u64(((n) + ((d) / 2)), (d))))
+
+/* Lock/unlock frame queues, subject to the "LOCKED" flag. This is about
+ * inter-processor locking only. Note, FQLOCK() is always called either under a
+ * local_irq_save() or from interrupt context - hence there's no need for irq
+ * protection (and indeed, attempting to nest irq-protection doesn't work, as
+ * the "irq en/disable" machinery isn't recursive...). */
+#define FQLOCK(fq) \
+ do { \
+ struct qman_fq *__fq478 = (fq); \
+ if (fq_isset(__fq478, QMAN_FQ_FLAG_LOCKED)) \
+ spin_lock(&__fq478->fqlock); \
+ } while (0)
+#define FQUNLOCK(fq) \
+ do { \
+ struct qman_fq *__fq478 = (fq); \
+ if (fq_isset(__fq478, QMAN_FQ_FLAG_LOCKED)) \
+ spin_unlock(&__fq478->fqlock); \
+ } while (0)
+
+static inline void fq_set(struct qman_fq *fq, u32 mask)
+{
+ set_bits(mask, &fq->flags);
+}
+static inline void fq_clear(struct qman_fq *fq, u32 mask)
+{
+ clear_bits(mask, &fq->flags);
+}
+static inline int fq_isset(struct qman_fq *fq, u32 mask)
+{
+ return fq->flags & mask;
+}
+static inline int fq_isclear(struct qman_fq *fq, u32 mask)
+{
+ return !(fq->flags & mask);
+}
+
+struct qman_portal {
+ struct qm_portal p;
+ unsigned long bits; /* PORTAL_BITS_*** - dynamic, strictly internal */
+ unsigned long irq_sources;
+ u32 use_eqcr_ci_stashing;
+ u32 slowpoll; /* only used when interrupts are off */
+ struct qman_fq *vdqcr_owned; /* only 1 volatile dequeue at a time */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ struct qman_fq *eqci_owned; /* only 1 enqueue WAIT_SYNC at a time */
+#endif
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ raw_spinlock_t sharing_lock; /* only used if is_shared */
+ int is_shared;
+ struct qman_portal *sharing_redirect;
+#endif
+ u32 sdqcr;
+ int dqrr_disable_ref;
+ /* A portal-specific handler for DCP ERNs. If this is NULL, the global
+ * handler is called instead. */
+ qman_cb_dc_ern cb_dc_ern;
+ /* When the cpu-affine portal is activated, this is non-NULL */
+ const struct qm_portal_config *config;
+ /* This is needed for providing a non-NULL device to dma_map_***() */
+ struct platform_device *pdev;
+ struct dpa_rbtree retire_table;
+ char irqname[MAX_IRQNAME];
+ /* 2-element array. cgrs[0] is mask, cgrs[1] is snapshot. */
+ struct qman_cgrs *cgrs;
+ /* linked-list of CSCN handlers. */
+ struct list_head cgr_cbs;
+ /* list lock */
+ spinlock_t cgr_lock;
+ /* track if memory was allocated by the driver */
+ u8 alloced;
+};
+
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+#define PORTAL_IRQ_LOCK(p, irqflags) \
+ do { \
+ if ((p)->is_shared) \
+ raw_spin_lock_irqsave(&(p)->sharing_lock, irqflags); \
+ else \
+ local_irq_save(irqflags); \
+ } while (0)
+#define PORTAL_IRQ_UNLOCK(p, irqflags) \
+ do { \
+ if ((p)->is_shared) \
+ raw_spin_unlock_irqrestore(&(p)->sharing_lock, \
+ irqflags); \
+ else \
+ local_irq_restore(irqflags); \
+ } while (0)
+#else
+#define PORTAL_IRQ_LOCK(p, irqflags) local_irq_save(irqflags)
+#define PORTAL_IRQ_UNLOCK(p, irqflags) local_irq_restore(irqflags)
+#endif
+
+/* Global handler for DCP ERNs. Used when the portal receiving the message does
+ * not have a portal-specific handler. */
+static qman_cb_dc_ern cb_dc_ern;
+
+static cpumask_t affine_mask;
+static DEFINE_SPINLOCK(affine_mask_lock);
+static u16 affine_channels[NR_CPUS];
+static DEFINE_PER_CPU(struct qman_portal, qman_affine_portal);
+void *affine_portals[NR_CPUS];
+
+/* "raw" gets the cpu-local struct whether it's a redirect or not. */
+static inline struct qman_portal *get_raw_affine_portal(void)
+{
+ return &get_cpu_var(qman_affine_portal);
+}
+/* For ops that can redirect, this obtains the portal to use */
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+static inline struct qman_portal *get_affine_portal(void)
+{
+ struct qman_portal *p = get_raw_affine_portal();
+ if (p->sharing_redirect)
+ return p->sharing_redirect;
+ return p;
+}
+#else
+#define get_affine_portal() get_raw_affine_portal()
+#endif
+/* For every "get", there must be a "put" */
+static inline void put_affine_portal(void)
+{
+ put_cpu_var(qman_affine_portal);
+}
+/* Exception: poll functions assume the caller is cpu-affine and in no risk of
+ * re-entrance, which are the two reasons we usually use the get/put_cpu_var()
+ * semantic - ie. to disable pre-emption. Some use-cases expect the execution
+ * context to remain as non-atomic during poll-triggered callbacks as it was
+ * when the poll API was first called (eg. NAPI), so we go out of our way in
+ * this case to not disable pre-emption. */
+static inline struct qman_portal *get_poll_portal(void)
+{
+ return this_cpu_ptr(&qman_affine_portal);
+}
+#define put_poll_portal()
+
+/* This gives a FQID->FQ lookup to cover the fact that we can't directly demux
+ * retirement notifications (the fact they are sometimes h/w-consumed means that
+ * contextB isn't always a s/w demux - and as we can't know which case it is
+ * when looking at the notification, we have to use the slow lookup for all of
+ * them). NB, it's possible to have multiple FQ objects refer to the same FQID
+ * (though at most one of them should be the consumer), so this table isn't for
+ * all FQs - FQs are added when retirement commands are issued, and removed when
+ * they complete, which also massively reduces the size of this table. */
+IMPLEMENT_DPA_RBTREE(fqtree, struct qman_fq, node, fqid);
+
+/* This is what everything can wait on, even if it migrates to a different cpu
+ * to the one whose affine portal it is waiting on. */
+static DECLARE_WAIT_QUEUE_HEAD(affine_queue);
+
+static inline int table_push_fq(struct qman_portal *p, struct qman_fq *fq)
+{
+ int ret = fqtree_push(&p->retire_table, fq);
+ if (ret)
+ pr_err("ERROR: double FQ-retirement %d\n", fq->fqid);
+ return ret;
+}
+
+static inline void table_del_fq(struct qman_portal *p, struct qman_fq *fq)
+{
+ fqtree_del(&p->retire_table, fq);
+}
+
+static inline struct qman_fq *table_find_fq(struct qman_portal *p, u32 fqid)
+{
+ return fqtree_find(&p->retire_table, fqid);
+}
+
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+static void **qman_fq_lookup_table;
+static size_t qman_fq_lookup_table_size;
+
+int qman_setup_fq_lookup_table(size_t num_entries)
+{
+ num_entries++;
+ /* Allocate 1 more entry since the first entry is not used */
+ qman_fq_lookup_table = vzalloc((num_entries * sizeof(void *)));
+ if (!qman_fq_lookup_table) {
+ pr_err("QMan: Could not allocate fq lookup table\n");
+ return -ENOMEM;
+ }
+ qman_fq_lookup_table_size = num_entries;
+ pr_info("QMan: Allocated lookup table at %p, entry count %lu\n",
+ qman_fq_lookup_table,
+ (unsigned long)qman_fq_lookup_table_size);
+ return 0;
+}
+
+/* global structure that maintains fq object mapping */
+static DEFINE_SPINLOCK(fq_hash_table_lock);
+
+static int find_empty_fq_table_entry(u32 *entry, struct qman_fq *fq)
+{
+ u32 i;
+
+ spin_lock(&fq_hash_table_lock);
+ /* Can't use index zero because this has special meaning
+ * in context_b field. */
+ for (i = 1; i < qman_fq_lookup_table_size; i++) {
+ if (qman_fq_lookup_table[i] == NULL) {
+ *entry = i;
+ qman_fq_lookup_table[i] = fq;
+ spin_unlock(&fq_hash_table_lock);
+ return 0;
+ }
+ }
+ spin_unlock(&fq_hash_table_lock);
+ return -ENOMEM;
+}
+
+static void clear_fq_table_entry(u32 entry)
+{
+ spin_lock(&fq_hash_table_lock);
+ BUG_ON(entry >= qman_fq_lookup_table_size);
+ qman_fq_lookup_table[entry] = NULL;
+ spin_unlock(&fq_hash_table_lock);
+}
+
+static inline struct qman_fq *get_fq_table_entry(u32 entry)
+{
+ BUG_ON(entry >= qman_fq_lookup_table_size);
+ return qman_fq_lookup_table[entry];
+}
+#endif
+
+/* In the case that slow- and fast-path handling are both done by qman_poll()
+ * (ie. because there is no interrupt handling), we ought to balance how often
+ * we do the fast-path poll versus the slow-path poll. We'll use two decrementer
+ * sources, so we call the fast poll 'n' times before calling the slow poll
+ * once. The idle decrementer constant is used when the last slow-poll detected
+ * no work to do, and the busy decrementer constant when the last slow-poll had
+ * work to do. */
+#define SLOW_POLL_IDLE 1000
+#define SLOW_POLL_BUSY 10
+static u32 __poll_portal_slow(struct qman_portal *p, u32 is);
+static inline unsigned int __poll_portal_fast(struct qman_portal *p,
+ unsigned int poll_limit);
+
+/* Portal interrupt handler */
+static irqreturn_t portal_isr(__always_unused int irq, void *ptr)
+{
+ struct qman_portal *p = ptr;
+ /*
+ * The CSCI source is cleared inside __poll_portal_slow(), because
+ * it could race against a Query Congestion State command also given
+ * as part of the handling of this interrupt source. We mustn't
+ * clear it a second time in this top-level function.
+ */
+ u32 clear = QM_DQAVAIL_MASK | (p->irq_sources & ~QM_PIRQ_CSCI);
+ u32 is = qm_isr_status_read(&p->p) & p->irq_sources;
+ /* DQRR-handling if it's interrupt-driven */
+ if (is & QM_PIRQ_DQRI)
+ __poll_portal_fast(p, CONFIG_FSL_QMAN_POLL_LIMIT);
+ /* Handling of anything else that's interrupt-driven */
+ clear |= __poll_portal_slow(p, is);
+ qm_isr_status_clear(&p->p, clear);
+ return IRQ_HANDLED;
+}
+
+/* This inner version is used privately by qman_create_affine_portal(), as well
+ * as by the exported qman_stop_dequeues(). */
+static inline void qman_stop_dequeues_ex(struct qman_portal *p)
+{
+ unsigned long irqflags __maybe_unused;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ if (!(p->dqrr_disable_ref++))
+ qm_dqrr_set_maxfill(&p->p, 0);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+}
+
+static int drain_mr_fqrni(struct qm_portal *p)
+{
+ const struct qm_mr_entry *msg;
+loop:
+ msg = qm_mr_current(p);
+ if (!msg) {
+ /* if MR was full and h/w had other FQRNI entries to produce, we
+ * need to allow it time to produce those entries once the
+ * existing entries are consumed. A worst-case situation
+ * (fully-loaded system) means h/w sequencers may have to do 3-4
+ * other things before servicing the portal's MR pump, each of
+ * which (if slow) may take ~50 qman cycles (which is ~200
+ * processor cycles). So rounding up and then multiplying this
+ * worst-case estimate by a factor of 10, just to be
+ * ultra-paranoid, goes as high as 10,000 cycles. NB, we consume
+ * one entry at a time, so h/w has an opportunity to produce new
+ * entries well before the ring has been fully consumed, so
+ * we're being *really* paranoid here. */
+ u64 now, then = mfatb();
+ do {
+ now = mfatb();
+ } while ((then + 10000) > now);
+ msg = qm_mr_current(p);
+ if (!msg)
+ return 0;
+ }
+ if ((msg->verb & QM_MR_VERB_TYPE_MASK) != QM_MR_VERB_FQRNI) {
+ /* We aren't draining anything but FQRNIs */
+ pr_err("QMan found verb 0x%x in MR\n", msg->verb);
+ return -1;
+ }
+ qm_mr_next(p);
+ qm_mr_cci_consume(p, 1);
+ goto loop;
+}
+
+struct qman_portal *qman_create_portal(
+ struct qman_portal *portal,
+ const struct qm_portal_config *config,
+ const struct qman_cgrs *cgrs)
+{
+ struct qm_portal *__p;
+ char buf[16];
+ int ret;
+ u32 isdr;
+
+ if (!portal) {
+ portal = kmalloc(sizeof(*portal), GFP_KERNEL);
+ if (!portal)
+ return portal;
+ portal->alloced = 1;
+ } else
+ portal->alloced = 0;
+
+ __p = &portal->p;
+
+ portal->use_eqcr_ci_stashing = ((qman_ip_rev >= QMAN_REV30) ?
+ 1 : 0);
+
+ /* prep the low-level portal struct with the mapped addresses from the
+ * config, everything that follows depends on it and "config" is more
+ * for (de)reference... */
+ __p->addr.addr_ce = config->addr_virt[DPA_PORTAL_CE];
+ __p->addr.addr_ci = config->addr_virt[DPA_PORTAL_CI];
+ /*
+ * If CI-stashing is used, the current defaults use a threshold of 3,
+ * and stash with high-than-DQRR priority.
+ */
+ if (qm_eqcr_init(__p, qm_eqcr_pvb,
+ portal->use_eqcr_ci_stashing ? 3 : 0, 1)) {
+ pr_err("Qman EQCR initialisation failed\n");
+ goto fail_eqcr;
+ }
+ if (qm_dqrr_init(__p, config, qm_dqrr_dpush, qm_dqrr_pvb,
+ qm_dqrr_cdc, DQRR_MAXFILL)) {
+ pr_err("Qman DQRR initialisation failed\n");
+ goto fail_dqrr;
+ }
+ if (qm_mr_init(__p, qm_mr_pvb, qm_mr_cci)) {
+ pr_err("Qman MR initialisation failed\n");
+ goto fail_mr;
+ }
+ if (qm_mc_init(__p)) {
+ pr_err("Qman MC initialisation failed\n");
+ goto fail_mc;
+ }
+ if (qm_isr_init(__p)) {
+ pr_err("Qman ISR initialisation failed\n");
+ goto fail_isr;
+ }
+ /* static interrupt-gating controls */
+ qm_dqrr_set_ithresh(__p, CONFIG_FSL_QMAN_PIRQ_DQRR_ITHRESH);
+ qm_mr_set_ithresh(__p, CONFIG_FSL_QMAN_PIRQ_MR_ITHRESH);
+ qm_isr_set_iperiod(__p, CONFIG_FSL_QMAN_PIRQ_IPERIOD);
+ portal->cgrs = kmalloc(2 * sizeof(*cgrs), GFP_KERNEL);
+ if (!portal->cgrs)
+ goto fail_cgrs;
+ /* initial snapshot is no-depletion */
+ qman_cgrs_init(&portal->cgrs[1]);
+ if (cgrs)
+ portal->cgrs[0] = *cgrs;
+ else
+ /* if the given mask is NULL, assume all CGRs can be seen */
+ qman_cgrs_fill(&portal->cgrs[0]);
+ INIT_LIST_HEAD(&portal->cgr_cbs);
+ spin_lock_init(&portal->cgr_lock);
+ portal->bits = 0;
+ portal->slowpoll = 0;
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ portal->eqci_owned = NULL;
+#endif
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ raw_spin_lock_init(&portal->sharing_lock);
+ portal->is_shared = config->public_cfg.is_shared;
+ portal->sharing_redirect = NULL;
+#endif
+ portal->sdqcr = QM_SDQCR_SOURCE_CHANNELS | QM_SDQCR_COUNT_UPTO3 |
+ QM_SDQCR_DEDICATED_PRECEDENCE | QM_SDQCR_TYPE_PRIO_QOS |
+ QM_SDQCR_TOKEN_SET(0xab) | QM_SDQCR_CHANNELS_DEDICATED;
+ portal->dqrr_disable_ref = 0;
+ portal->cb_dc_ern = NULL;
+ sprintf(buf, "qportal-%d", config->public_cfg.channel);
+ portal->pdev = platform_device_alloc(buf, -1);
+ if (!portal->pdev)
+ goto fail_devalloc;
+ if (dma_set_mask(&portal->pdev->dev, DMA_BIT_MASK(40)))
+ goto fail_devadd;
+ ret = platform_device_add(portal->pdev);
+ if (ret)
+ goto fail_devadd;
+ dpa_rbtree_init(&portal->retire_table);
+ isdr = 0xffffffff;
+ qm_isr_disable_write(__p, isdr);
+ portal->irq_sources = 0;
+ qm_isr_enable_write(__p, portal->irq_sources);
+ qm_isr_status_clear(__p, 0xffffffff);
+ snprintf(portal->irqname, MAX_IRQNAME, IRQNAME, config->public_cfg.cpu);
+ if (request_irq(config->public_cfg.irq, portal_isr, 0, portal->irqname,
+ portal)) {
+ pr_err("request_irq() failed\n");
+ goto fail_irq;
+ }
+ if ((config->public_cfg.cpu != -1) &&
+ irq_can_set_affinity(config->public_cfg.irq) &&
+ irq_set_affinity(config->public_cfg.irq,
+ cpumask_of(config->public_cfg.cpu))) {
+ pr_err("irq_set_affinity() failed\n");
+ goto fail_affinity;
+ }
+
+ /* Need EQCR to be empty before continuing */
+ isdr ^= QM_PIRQ_EQCI;
+ qm_isr_disable_write(__p, isdr);
+ ret = qm_eqcr_get_fill(__p);
+ if (ret) {
+ pr_err("Qman EQCR unclean\n");
+ goto fail_eqcr_empty;
+ }
+ isdr ^= (QM_PIRQ_DQRI | QM_PIRQ_MRI);
+ qm_isr_disable_write(__p, isdr);
+ if (qm_dqrr_current(__p) != NULL) {
+ pr_err("Qman DQRR unclean\n");
+ qm_dqrr_cdc_consume_n(__p, 0xffff);
+ }
+ if (qm_mr_current(__p) != NULL) {
+ /* special handling, drain just in case it's a few FQRNIs */
+ if (drain_mr_fqrni(__p)) {
+ const struct qm_mr_entry *e = qm_mr_current(__p);
+ pr_err("Qman MR unclean, MR VERB 0x%x, "
+ "rc 0x%x\n, addr 0x%x",
+ e->verb, e->ern.rc, e->ern.fd.addr_lo);
+ goto fail_dqrr_mr_empty;
+ }
+ }
+ /* Success */
+ portal->config = config;
+ qm_isr_disable_write(__p, 0);
+ qm_isr_uninhibit(__p);
+ /* Write a sane SDQCR */
+ qm_dqrr_sdqcr_set(__p, portal->sdqcr);
+ return portal;
+fail_dqrr_mr_empty:
+fail_eqcr_empty:
+fail_affinity:
+ free_irq(config->public_cfg.irq, portal);
+fail_irq:
+ platform_device_del(portal->pdev);
+fail_devadd:
+ platform_device_put(portal->pdev);
+fail_devalloc:
+ kfree(portal->cgrs);
+fail_cgrs:
+ qm_isr_finish(__p);
+fail_isr:
+ qm_mc_finish(__p);
+fail_mc:
+ qm_mr_finish(__p);
+fail_mr:
+ qm_dqrr_finish(__p);
+fail_dqrr:
+ qm_eqcr_finish(__p);
+fail_eqcr:
+ return NULL;
+}
+
+struct qman_portal *qman_create_affine_portal(
+ const struct qm_portal_config *config,
+ const struct qman_cgrs *cgrs)
+{
+ struct qman_portal *res;
+ struct qman_portal *portal;
+
+ portal = &per_cpu(qman_affine_portal, config->public_cfg.cpu);
+ res = qman_create_portal(portal, config, cgrs);
+ if (res) {
+ spin_lock(&affine_mask_lock);
+ cpumask_set_cpu(config->public_cfg.cpu, &affine_mask);
+ affine_channels[config->public_cfg.cpu] =
+ config->public_cfg.channel;
+ affine_portals[config->public_cfg.cpu] = portal;
+ spin_unlock(&affine_mask_lock);
+ }
+ return res;
+}
+
+/* These checks are BUG_ON()s because the driver is already supposed to avoid
+ * these cases. */
+struct qman_portal *qman_create_affine_slave(struct qman_portal *redirect,
+ int cpu)
+{
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ struct qman_portal *p;
+ p = &per_cpu(qman_affine_portal, cpu);
+ /* Check that we don't already have our own portal */
+ BUG_ON(p->config);
+ /* Check that we aren't already slaving to another portal */
+ BUG_ON(p->is_shared);
+ /* Check that 'redirect' is prepared to have us */
+ BUG_ON(!redirect->config->public_cfg.is_shared);
+ /* These are the only elements to initialise when redirecting */
+ p->irq_sources = 0;
+ p->sharing_redirect = redirect;
+ affine_portals[cpu] = p;
+ return p;
+#else
+ BUG();
+ return NULL;
+#endif
+}
+
+void qman_destroy_portal(struct qman_portal *qm)
+{
+ const struct qm_portal_config *pcfg;
+
+ /* Stop dequeues on the portal */
+ qm_dqrr_sdqcr_set(&qm->p, 0);
+
+ /* NB we do this to "quiesce" EQCR. If we add enqueue-completions or
+ * something related to QM_PIRQ_EQCI, this may need fixing.
+ * Also, due to the prefetching model used for CI updates in the enqueue
+ * path, this update will only invalidate the CI cacheline *after*
+ * working on it, so we need to call this twice to ensure a full update
+ * irrespective of where the enqueue processing was at when the teardown
+ * began. */
+ qm_eqcr_cce_update(&qm->p);
+ qm_eqcr_cce_update(&qm->p);
+ pcfg = qm->config;
+
+ free_irq(pcfg->public_cfg.irq, qm);
+
+ kfree(qm->cgrs);
+ qm_isr_finish(&qm->p);
+ qm_mc_finish(&qm->p);
+ qm_mr_finish(&qm->p);
+ qm_dqrr_finish(&qm->p);
+ qm_eqcr_finish(&qm->p);
+
+ platform_device_del(qm->pdev);
+ platform_device_put(qm->pdev);
+
+ qm->config = NULL;
+ if (qm->alloced)
+ kfree(qm);
+}
+
+const struct qm_portal_config *qman_destroy_affine_portal(void)
+{
+ /* We don't want to redirect if we're a slave, use "raw" */
+ struct qman_portal *qm = get_raw_affine_portal();
+ const struct qm_portal_config *pcfg;
+ int cpu;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (qm->sharing_redirect) {
+ qm->sharing_redirect = NULL;
+ put_affine_portal();
+ return NULL;
+ }
+ qm->is_shared = 0;
+#endif
+ pcfg = qm->config;
+ cpu = pcfg->public_cfg.cpu;
+
+ qman_destroy_portal(qm);
+
+ spin_lock(&affine_mask_lock);
+ cpumask_clear_cpu(cpu, &affine_mask);
+ spin_unlock(&affine_mask_lock);
+ put_affine_portal();
+ return pcfg;
+}
+
+const struct qman_portal_config *qman_p_get_portal_config(struct qman_portal *p)
+{
+ return &p->config->public_cfg;
+}
+EXPORT_SYMBOL(qman_p_get_portal_config);
+
+const struct qman_portal_config *qman_get_portal_config(void)
+{
+ struct qman_portal *p = get_affine_portal();
+ const struct qman_portal_config *ret = qman_p_get_portal_config(p);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_get_portal_config);
+
+/* Inline helper to reduce nesting in __poll_portal_slow() */
+static inline void fq_state_change(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_mr_entry *msg, u8 verb)
+{
+ FQLOCK(fq);
+ switch (verb) {
+ case QM_MR_VERB_FQRL:
+ DPA_ASSERT(fq_isset(fq, QMAN_FQ_STATE_ORL));
+ fq_clear(fq, QMAN_FQ_STATE_ORL);
+ table_del_fq(p, fq);
+ break;
+ case QM_MR_VERB_FQRN:
+ DPA_ASSERT((fq->state == qman_fq_state_parked) ||
+ (fq->state == qman_fq_state_sched));
+ DPA_ASSERT(fq_isset(fq, QMAN_FQ_STATE_CHANGING));
+ fq_clear(fq, QMAN_FQ_STATE_CHANGING);
+ if (msg->fq.fqs & QM_MR_FQS_NOTEMPTY)
+ fq_set(fq, QMAN_FQ_STATE_NE);
+ if (msg->fq.fqs & QM_MR_FQS_ORLPRESENT)
+ fq_set(fq, QMAN_FQ_STATE_ORL);
+ else
+ table_del_fq(p, fq);
+ fq->state = qman_fq_state_retired;
+ break;
+ case QM_MR_VERB_FQPN:
+ DPA_ASSERT(fq->state == qman_fq_state_sched);
+ DPA_ASSERT(fq_isclear(fq, QMAN_FQ_STATE_CHANGING));
+ fq->state = qman_fq_state_parked;
+ }
+ FQUNLOCK(fq);
+}
+
+static u32 __poll_portal_slow(struct qman_portal *p, u32 is)
+{
+ const struct qm_mr_entry *msg;
+
+ if (is & QM_PIRQ_CSCI) {
+ struct qman_cgrs rr, c;
+ struct qm_mc_result *mcr;
+ struct qman_cgr *cgr;
+ unsigned long irqflags __maybe_unused;
+
+ spin_lock_irqsave(&p->cgr_lock, irqflags);
+ /*
+ * The CSCI bit must be cleared _before_ issuing the
+ * Query Congestion State command, to ensure that a long
+ * CGR State Change callback cannot miss an intervening
+ * state change.
+ */
+ qm_isr_status_clear(&p->p, QM_PIRQ_CSCI);
+ qm_mc_start(&p->p);
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCONGESTION);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ /* mask out the ones I'm not interested in */
+ qman_cgrs_and(&rr, (const struct qman_cgrs *)
+ &mcr->querycongestion.state, &p->cgrs[0]);
+ /* check previous snapshot for delta, enter/exit congestion */
+ qman_cgrs_xor(&c, &rr, &p->cgrs[1]);
+ /* update snapshot */
+ qman_cgrs_cp(&p->cgrs[1], &rr);
+ /* Invoke callback */
+ list_for_each_entry(cgr, &p->cgr_cbs, node)
+ if (cgr->cb && qman_cgrs_get(&c, cgr->cgrid))
+ cgr->cb(p, cgr, qman_cgrs_get(&rr, cgr->cgrid));
+ spin_unlock_irqrestore(&p->cgr_lock, irqflags);
+ }
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (is & QM_PIRQ_EQCI) {
+ unsigned long irqflags;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ p->eqci_owned = NULL;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ wake_up(&affine_queue);
+ }
+#endif
+
+ if (is & QM_PIRQ_EQRI) {
+ unsigned long irqflags __maybe_unused;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ qm_eqcr_cce_update(&p->p);
+ qm_eqcr_set_ithresh(&p->p, 0);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ wake_up(&affine_queue);
+ }
+
+ if (is & QM_PIRQ_MRI) {
+ struct qman_fq *fq;
+ u8 verb, num = 0;
+mr_loop:
+ qm_mr_pvb_update(&p->p);
+ msg = qm_mr_current(&p->p);
+ if (!msg)
+ goto mr_done;
+ verb = msg->verb & QM_MR_VERB_TYPE_MASK;
+ /* The message is a software ERN iff the 0x20 bit is set */
+ if (verb & 0x20) {
+ switch (verb) {
+ case QM_MR_VERB_FQRNI:
+ /* nada, we drop FQRNIs on the floor */
+ break;
+ case QM_MR_VERB_FQRN:
+ case QM_MR_VERB_FQRL:
+ /* Lookup in the retirement table */
+ fq = table_find_fq(p, msg->fq.fqid);
+ BUG_ON(!fq);
+ fq_state_change(p, fq, msg, verb);
+ if (fq->cb.fqs)
+ fq->cb.fqs(p, fq, msg);
+ break;
+ case QM_MR_VERB_FQPN:
+ /* Parked */
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ fq = get_fq_table_entry(msg->fq.contextB);
+#else
+ fq = (void *)(uintptr_t)msg->fq.contextB;
+#endif
+ fq_state_change(p, fq, msg, verb);
+ if (fq->cb.fqs)
+ fq->cb.fqs(p, fq, msg);
+ break;
+ case QM_MR_VERB_DC_ERN:
+ /* DCP ERN */
+ if (p->cb_dc_ern)
+ p->cb_dc_ern(p, msg);
+ else if (cb_dc_ern)
+ cb_dc_ern(p, msg);
+ else {
+ static int warn_once;
+ if (!warn_once) {
+ pr_crit("Leaking DCP ERNs!\n");
+ warn_once = 1;
+ }
+ }
+ break;
+ default:
+ pr_crit("Invalid MR verb 0x%02x\n", verb);
+ }
+ } else {
+ /* Its a software ERN */
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ fq = get_fq_table_entry(msg->ern.tag);
+#else
+ fq = (void *)(uintptr_t)msg->ern.tag;
+#endif
+ fq->cb.ern(p, fq, msg);
+ }
+ num++;
+ qm_mr_next(&p->p);
+ goto mr_loop;
+mr_done:
+ qm_mr_cci_consume(&p->p, num);
+ }
+ /*
+ * QM_PIRQ_CSCI has already been cleared, as part of its specific
+ * processing. If that interrupt source has meanwhile been re-asserted,
+ * we mustn't clear it here (or in the top-level interrupt handler).
+ */
+ return is & (QM_PIRQ_EQCI | QM_PIRQ_EQRI | QM_PIRQ_MRI);
+}
+
+/* remove some slowish-path stuff from the "fast path" and make sure it isn't
+ * inlined. */
+static noinline void clear_vdqcr(struct qman_portal *p, struct qman_fq *fq)
+{
+ p->vdqcr_owned = NULL;
+ FQLOCK(fq);
+ fq_clear(fq, QMAN_FQ_STATE_VDQCR);
+ FQUNLOCK(fq);
+ wake_up(&affine_queue);
+}
+
+/* Look: no locks, no irq_save()s, no preempt_disable()s! :-) The only states
+ * that would conflict with other things if they ran at the same time on the
+ * same cpu are;
+ *
+ * (i) setting/clearing vdqcr_owned, and
+ * (ii) clearing the NE (Not Empty) flag.
+ *
+ * Both are safe. Because;
+ *
+ * (i) this clearing can only occur after qman_volatile_dequeue() has set the
+ * vdqcr_owned field (which it does before setting VDQCR), and
+ * qman_volatile_dequeue() blocks interrupts and preemption while this is
+ * done so that we can't interfere.
+ * (ii) the NE flag is only cleared after qman_retire_fq() has set it, and as
+ * with (i) that API prevents us from interfering until it's safe.
+ *
+ * The good thing is that qman_volatile_dequeue() and qman_retire_fq() run far
+ * less frequently (ie. per-FQ) than __poll_portal_fast() does, so the nett
+ * advantage comes from this function not having to "lock" anything at all.
+ *
+ * Note also that the callbacks are invoked at points which are safe against the
+ * above potential conflicts, but that this function itself is not re-entrant
+ * (this is because the function tracks one end of each FIFO in the portal and
+ * we do *not* want to lock that). So the consequence is that it is safe for
+ * user callbacks to call into any Qman API *except* qman_poll() (as that's the
+ * sole API that could be invoking the callback through this function).
+ */
+static inline unsigned int __poll_portal_fast(struct qman_portal *p,
+ unsigned int poll_limit)
+{
+ const struct qm_dqrr_entry *dq;
+ struct qman_fq *fq;
+ enum qman_cb_dqrr_result res;
+ unsigned int limit = 0;
+
+loop:
+ qm_dqrr_pvb_update(&p->p);
+ dq = qm_dqrr_current(&p->p);
+ if (!dq)
+ goto done;
+ if (dq->stat & QM_DQRR_STAT_UNSCHEDULED) {
+ /* VDQCR: don't trust contextB as the FQ may have been
+ * configured for h/w consumption and we're draining it
+ * post-retirement. */
+ fq = p->vdqcr_owned;
+ /* We only set QMAN_FQ_STATE_NE when retiring, so we only need
+ * to check for clearing it when doing volatile dequeues. It's
+ * one less thing to check in the critical path (SDQCR). */
+ if (dq->stat & QM_DQRR_STAT_FQ_EMPTY)
+ fq_clear(fq, QMAN_FQ_STATE_NE);
+ /* this is duplicated from the SDQCR code, but we have stuff to
+ * do before *and* after this callback, and we don't want
+ * multiple if()s in the critical path (SDQCR). */
+ res = fq->cb.dqrr(p, fq, dq);
+ if (res == qman_cb_dqrr_stop)
+ goto done;
+ /* Check for VDQCR completion */
+ if (dq->stat & QM_DQRR_STAT_DQCR_EXPIRED)
+ clear_vdqcr(p, fq);
+ } else {
+ /* SDQCR: contextB points to the FQ */
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ fq = get_fq_table_entry(dq->contextB);
+#else
+ fq = (void *)(uintptr_t)dq->contextB;
+#endif
+ /* Now let the callback do its stuff */
+ res = fq->cb.dqrr(p, fq, dq);
+ /* The callback can request that we exit without consuming this
+ * entry nor advancing; */
+ if (res == qman_cb_dqrr_stop)
+ goto done;
+ }
+ /* Interpret 'dq' from a driver perspective. */
+ /* Parking isn't possible unless HELDACTIVE was set. NB,
+ * FORCEELIGIBLE implies HELDACTIVE, so we only need to
+ * check for HELDACTIVE to cover both. */
+ DPA_ASSERT((dq->stat & QM_DQRR_STAT_FQ_HELDACTIVE) ||
+ (res != qman_cb_dqrr_park));
+ /* Defer just means "skip it, I'll consume it myself later on" */
+ if (res != qman_cb_dqrr_defer)
+ qm_dqrr_cdc_consume_1ptr(&p->p, dq, (res == qman_cb_dqrr_park));
+ /* Move forward */
+ qm_dqrr_next(&p->p);
+ /* Entry processed and consumed, increment our counter. The callback can
+ * request that we exit after consuming the entry, and we also exit if
+ * we reach our processing limit, so loop back only if neither of these
+ * conditions is met. */
+ if ((++limit < poll_limit) && (res != qman_cb_dqrr_consume_stop))
+ goto loop;
+done:
+ return limit;
+}
+
+u32 qman_irqsource_get(void)
+{
+ /* "irqsource" and "poll" APIs mustn't redirect when sharing, they
+ * should shut the user out if they are not the primary CPU hosting the
+ * portal. That's why we use the "raw" interface. */
+ struct qman_portal *p = get_raw_affine_portal();
+ u32 ret = p->irq_sources & QM_PIRQ_VISIBLE;
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_irqsource_get);
+
+int qman_p_irqsource_add(struct qman_portal *p, u32 bits __maybe_unused)
+{
+ __maybe_unused unsigned long irqflags;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (p->sharing_redirect)
+ return -EINVAL;
+ else
+#endif
+ {
+ PORTAL_IRQ_LOCK(p, irqflags);
+ set_bits(bits & QM_PIRQ_VISIBLE, &p->irq_sources);
+ qm_isr_enable_write(&p->p, p->irq_sources);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ }
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_irqsource_add);
+
+int qman_irqsource_add(u32 bits __maybe_unused)
+{
+ struct qman_portal *p = get_raw_affine_portal();
+ int ret;
+ ret = qman_p_irqsource_add(p, bits);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_irqsource_add);
+
+int qman_p_irqsource_remove(struct qman_portal *p, u32 bits)
+{
+ __maybe_unused unsigned long irqflags;
+ u32 ier;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (p->sharing_redirect) {
+ put_affine_portal();
+ return -EINVAL;
+ }
+#endif
+ /* Our interrupt handler only processes+clears status register bits that
+ * are in p->irq_sources. As we're trimming that mask, if one of them
+ * were to assert in the status register just before we remove it from
+ * the enable register, there would be an interrupt-storm when we
+ * release the IRQ lock. So we wait for the enable register update to
+ * take effect in h/w (by reading it back) and then clear all other bits
+ * in the status register. Ie. we clear them from ISR once it's certain
+ * IER won't allow them to reassert. */
+ PORTAL_IRQ_LOCK(p, irqflags);
+ bits &= QM_PIRQ_VISIBLE;
+ clear_bits(bits, &p->irq_sources);
+ qm_isr_enable_write(&p->p, p->irq_sources);
+ ier = qm_isr_enable_read(&p->p);
+ /* Using "~ier" (rather than "bits" or "~p->irq_sources") creates a
+ * data-dependency, ie. to protect against re-ordering. */
+ qm_isr_status_clear(&p->p, ~ier);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_irqsource_remove);
+
+int qman_irqsource_remove(u32 bits)
+{
+ struct qman_portal *p = get_raw_affine_portal();
+ int ret;
+ ret = qman_p_irqsource_remove(p, bits);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_irqsource_remove);
+
+const cpumask_t *qman_affine_cpus(void)
+{
+ return &affine_mask;
+}
+EXPORT_SYMBOL(qman_affine_cpus);
+
+u16 qman_affine_channel(int cpu)
+{
+ if (cpu < 0) {
+ struct qman_portal *portal = get_raw_affine_portal();
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ BUG_ON(portal->sharing_redirect);
+#endif
+ cpu = portal->config->public_cfg.cpu;
+ put_affine_portal();
+ }
+ BUG_ON(!cpumask_test_cpu(cpu, &affine_mask));
+ return affine_channels[cpu];
+}
+EXPORT_SYMBOL(qman_affine_channel);
+
+void *qman_get_affine_portal(int cpu)
+{
+ return affine_portals[cpu];
+}
+EXPORT_SYMBOL(qman_get_affine_portal);
+
+int qman_p_poll_dqrr(struct qman_portal *p, unsigned int limit)
+{
+ int ret;
+
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (unlikely(p->sharing_redirect))
+ ret = -EINVAL;
+ else
+#endif
+ {
+ BUG_ON(p->irq_sources & QM_PIRQ_DQRI);
+ ret = __poll_portal_fast(p, limit);
+ }
+ return ret;
+}
+EXPORT_SYMBOL(qman_p_poll_dqrr);
+
+int qman_poll_dqrr(unsigned int limit)
+{
+ struct qman_portal *p = get_poll_portal();
+ int ret;
+ ret = qman_p_poll_dqrr(p, limit);
+ put_poll_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_poll_dqrr);
+
+u32 qman_p_poll_slow(struct qman_portal *p)
+{
+ u32 ret;
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (unlikely(p->sharing_redirect))
+ ret = (u32)-1;
+ else
+#endif
+ {
+ u32 is = qm_isr_status_read(&p->p) & ~p->irq_sources;
+ ret = __poll_portal_slow(p, is);
+ qm_isr_status_clear(&p->p, ret);
+ }
+ return ret;
+}
+EXPORT_SYMBOL(qman_p_poll_slow);
+
+u32 qman_poll_slow(void)
+{
+ struct qman_portal *p = get_poll_portal();
+ u32 ret;
+ ret = qman_p_poll_slow(p);
+ put_poll_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_poll_slow);
+
+/* Legacy wrapper */
+void qman_p_poll(struct qman_portal *p)
+{
+#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
+ if (unlikely(p->sharing_redirect))
+ return;
+#endif
+ if ((~p->irq_sources) & QM_PIRQ_SLOW) {
+ if (!(p->slowpoll--)) {
+ u32 is = qm_isr_status_read(&p->p) & ~p->irq_sources;
+ u32 active = __poll_portal_slow(p, is);
+ if (active) {
+ qm_isr_status_clear(&p->p, active);
+ p->slowpoll = SLOW_POLL_BUSY;
+ } else
+ p->slowpoll = SLOW_POLL_IDLE;
+ }
+ }
+ if ((~p->irq_sources) & QM_PIRQ_DQRI)
+ __poll_portal_fast(p, CONFIG_FSL_QMAN_POLL_LIMIT);
+}
+EXPORT_SYMBOL(qman_p_poll);
+
+void qman_poll(void)
+{
+ struct qman_portal *p = get_poll_portal();
+ qman_p_poll(p);
+ put_poll_portal();
+}
+EXPORT_SYMBOL(qman_poll);
+
+void qman_p_stop_dequeues(struct qman_portal *p)
+{
+ qman_stop_dequeues_ex(p);
+}
+EXPORT_SYMBOL(qman_p_stop_dequeues);
+
+void qman_stop_dequeues(void)
+{
+ struct qman_portal *p = get_affine_portal();
+ qman_p_stop_dequeues(p);
+ put_affine_portal();
+}
+EXPORT_SYMBOL(qman_stop_dequeues);
+
+void qman_p_start_dequeues(struct qman_portal *p)
+{
+ unsigned long irqflags __maybe_unused;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ DPA_ASSERT(p->dqrr_disable_ref > 0);
+ if (!(--p->dqrr_disable_ref))
+ qm_dqrr_set_maxfill(&p->p, DQRR_MAXFILL);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+}
+EXPORT_SYMBOL(qman_p_start_dequeues);
+
+void qman_start_dequeues(void)
+{
+ struct qman_portal *p = get_affine_portal();
+ qman_p_start_dequeues(p);
+ put_affine_portal();
+}
+EXPORT_SYMBOL(qman_start_dequeues);
+
+void qman_p_static_dequeue_add(struct qman_portal *p, u32 pools)
+{
+ unsigned long irqflags __maybe_unused;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ pools &= p->config->public_cfg.pools;
+ p->sdqcr |= pools;
+ qm_dqrr_sdqcr_set(&p->p, p->sdqcr);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+}
+EXPORT_SYMBOL(qman_p_static_dequeue_add);
+
+void qman_static_dequeue_add(u32 pools)
+{
+ struct qman_portal *p = get_affine_portal();
+ qman_p_static_dequeue_add(p, pools);
+ put_affine_portal();
+}
+EXPORT_SYMBOL(qman_static_dequeue_add);
+
+void qman_p_static_dequeue_del(struct qman_portal *p, u32 pools)
+{
+ unsigned long irqflags __maybe_unused;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ pools &= p->config->public_cfg.pools;
+ p->sdqcr &= ~pools;
+ qm_dqrr_sdqcr_set(&p->p, p->sdqcr);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+}
+EXPORT_SYMBOL(qman_p_static_dequeue_del);
+
+void qman_static_dequeue_del(u32 pools)
+{
+ struct qman_portal *p = get_affine_portal();
+ qman_p_static_dequeue_del(p, pools);
+ put_affine_portal();
+}
+EXPORT_SYMBOL(qman_static_dequeue_del);
+
+u32 qman_p_static_dequeue_get(struct qman_portal *p)
+{
+ return p->sdqcr;
+}
+EXPORT_SYMBOL(qman_p_static_dequeue_get);
+
+u32 qman_static_dequeue_get(void)
+{
+ struct qman_portal *p = get_affine_portal();
+ u32 ret = qman_p_static_dequeue_get(p);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_static_dequeue_get);
+
+void qman_p_dca(struct qman_portal *p, struct qm_dqrr_entry *dq,
+ int park_request)
+{
+ qm_dqrr_cdc_consume_1ptr(&p->p, dq, park_request);
+}
+EXPORT_SYMBOL(qman_p_dca);
+
+void qman_dca(struct qm_dqrr_entry *dq, int park_request)
+{
+ struct qman_portal *p = get_affine_portal();
+ qman_p_dca(p, dq, park_request);
+ put_affine_portal();
+}
+EXPORT_SYMBOL(qman_dca);
+
+/*******************/
+/* Frame queue API */
+/*******************/
+
+static const char *mcr_result_str(u8 result)
+{
+ switch (result) {
+ case QM_MCR_RESULT_NULL:
+ return "QM_MCR_RESULT_NULL";
+ case QM_MCR_RESULT_OK:
+ return "QM_MCR_RESULT_OK";
+ case QM_MCR_RESULT_ERR_FQID:
+ return "QM_MCR_RESULT_ERR_FQID";
+ case QM_MCR_RESULT_ERR_FQSTATE:
+ return "QM_MCR_RESULT_ERR_FQSTATE";
+ case QM_MCR_RESULT_ERR_NOTEMPTY:
+ return "QM_MCR_RESULT_ERR_NOTEMPTY";
+ case QM_MCR_RESULT_PENDING:
+ return "QM_MCR_RESULT_PENDING";
+ case QM_MCR_RESULT_ERR_BADCOMMAND:
+ return "QM_MCR_RESULT_ERR_BADCOMMAND";
+ }
+ return "<unknown MCR result>";
+}
+
+int qman_create_fq(u32 fqid, u32 flags, struct qman_fq *fq)
+{
+ struct qm_fqd fqd;
+ struct qm_mcr_queryfq_np np;
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+
+ if (flags & QMAN_FQ_FLAG_DYNAMIC_FQID) {
+ int ret = qman_alloc_fqid(&fqid);
+ if (ret)
+ return ret;
+ }
+ spin_lock_init(&fq->fqlock);
+ fq->fqid = fqid;
+ fq->flags = flags;
+ fq->state = qman_fq_state_oos;
+ fq->cgr_groupid = 0;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ if (unlikely(find_empty_fq_table_entry(&fq->key, fq)))
+ return -ENOMEM;
+#endif
+ if (!(flags & QMAN_FQ_FLAG_AS_IS) || (flags & QMAN_FQ_FLAG_NO_MODIFY))
+ return 0;
+ /* Everything else is AS_IS support */
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ mcc->queryfq.fqid = fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYFQ);
+ if (mcr->result != QM_MCR_RESULT_OK) {
+ pr_err("QUERYFQ failed: %s\n", mcr_result_str(mcr->result));
+ goto err;
+ }
+ fqd = mcr->queryfq.fqd;
+ mcc = qm_mc_start(&p->p);
+ mcc->queryfq_np.fqid = fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYFQ_NP);
+ if (mcr->result != QM_MCR_RESULT_OK) {
+ pr_err("QUERYFQ_NP failed: %s\n", mcr_result_str(mcr->result));
+ goto err;
+ }
+ np = mcr->queryfq_np;
+ /* Phew, have queryfq and queryfq_np results, stitch together
+ * the FQ object from those. */
+ fq->cgr_groupid = fqd.cgid;
+ switch (np.state & QM_MCR_NP_STATE_MASK) {
+ case QM_MCR_NP_STATE_OOS:
+ break;
+ case QM_MCR_NP_STATE_RETIRED:
+ fq->state = qman_fq_state_retired;
+ if (np.frm_cnt)
+ fq_set(fq, QMAN_FQ_STATE_NE);
+ break;
+ case QM_MCR_NP_STATE_TEN_SCHED:
+ case QM_MCR_NP_STATE_TRU_SCHED:
+ case QM_MCR_NP_STATE_ACTIVE:
+ fq->state = qman_fq_state_sched;
+ if (np.state & QM_MCR_NP_STATE_R)
+ fq_set(fq, QMAN_FQ_STATE_CHANGING);
+ break;
+ case QM_MCR_NP_STATE_PARKED:
+ fq->state = qman_fq_state_parked;
+ break;
+ default:
+ DPA_ASSERT(NULL == "invalid FQ state");
+ }
+ if (fqd.fq_ctrl & QM_FQCTRL_CGE)
+ fq->state |= QMAN_FQ_STATE_CGR_EN;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return 0;
+err:
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (flags & QMAN_FQ_FLAG_DYNAMIC_FQID)
+ qman_release_fqid(fqid);
+ return -EIO;
+}
+EXPORT_SYMBOL(qman_create_fq);
+
+void qman_destroy_fq(struct qman_fq *fq, u32 flags __maybe_unused)
+{
+
+ /* We don't need to lock the FQ as it is a pre-condition that the FQ be
+ * quiesced. Instead, run some checks. */
+ switch (fq->state) {
+ case qman_fq_state_parked:
+ DPA_ASSERT(flags & QMAN_FQ_DESTROY_PARKED);
+ case qman_fq_state_oos:
+ if (fq_isset(fq, QMAN_FQ_FLAG_DYNAMIC_FQID))
+ qman_release_fqid(fq->fqid);
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ clear_fq_table_entry(fq->key);
+#endif
+ return;
+ default:
+ break;
+ }
+ DPA_ASSERT(NULL == "qman_free_fq() on unquiesced FQ!");
+}
+EXPORT_SYMBOL(qman_destroy_fq);
+
+u32 qman_fq_fqid(struct qman_fq *fq)
+{
+ return fq->fqid;
+}
+EXPORT_SYMBOL(qman_fq_fqid);
+
+void qman_fq_state(struct qman_fq *fq, enum qman_fq_state *state, u32 *flags)
+{
+ if (state)
+ *state = fq->state;
+ if (flags)
+ *flags = fq->flags;
+}
+EXPORT_SYMBOL(qman_fq_state);
+
+int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ u8 res, myverb = (flags & QMAN_INITFQ_FLAG_SCHED) ?
+ QM_MCC_VERB_INITFQ_SCHED : QM_MCC_VERB_INITFQ_PARKED;
+
+ if ((fq->state != qman_fq_state_oos) &&
+ (fq->state != qman_fq_state_parked))
+ return -EINVAL;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
+ return -EINVAL;
+#endif
+ if (opts && (opts->we_mask & QM_INITFQ_WE_OAC)) {
+ /* And can't be set at the same time as TDTHRESH */
+ if (opts->we_mask & QM_INITFQ_WE_TDTHRESH)
+ return -EINVAL;
+ }
+ /* Issue an INITFQ_[PARKED|SCHED] management command */
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ FQLOCK(fq);
+ if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
+ ((fq->state != qman_fq_state_oos) &&
+ (fq->state != qman_fq_state_parked)))) {
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return -EBUSY;
+ }
+ mcc = qm_mc_start(&p->p);
+ if (opts)
+ mcc->initfq = *opts;
+ mcc->initfq.fqid = fq->fqid;
+ mcc->initfq.count = 0;
+ /* If the FQ does *not* have the TO_DCPORTAL flag, contextB is set as a
+ * demux pointer. Otherwise, the caller-provided value is allowed to
+ * stand, don't overwrite it. */
+ if (fq_isclear(fq, QMAN_FQ_FLAG_TO_DCPORTAL)) {
+ dma_addr_t phys_fq;
+ mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTB;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ mcc->initfq.fqd.context_b = fq->key;
+#else
+ mcc->initfq.fqd.context_b = (u32)(uintptr_t)fq;
+#endif
+ /* and the physical address - NB, if the user wasn't trying to
+ * set CONTEXTA, clear the stashing settings. */
+ if (!(mcc->initfq.we_mask & QM_INITFQ_WE_CONTEXTA)) {
+ mcc->initfq.we_mask |= QM_INITFQ_WE_CONTEXTA;
+ memset(&mcc->initfq.fqd.context_a, 0,
+ sizeof(mcc->initfq.fqd.context_a));
+ } else {
+ phys_fq = dma_map_single(&p->pdev->dev, fq, sizeof(*fq),
+ DMA_TO_DEVICE);
+ qm_fqd_stashing_set64(&mcc->initfq.fqd, phys_fq);
+ }
+ }
+ if (flags & QMAN_INITFQ_FLAG_LOCAL) {
+ mcc->initfq.fqd.dest.channel = p->config->public_cfg.channel;
+ if (!(mcc->initfq.we_mask & QM_INITFQ_WE_DESTWQ)) {
+ mcc->initfq.we_mask |= QM_INITFQ_WE_DESTWQ;
+ mcc->initfq.fqd.dest.wq = 4;
+ }
+ }
+ qm_mc_commit(&p->p, myverb);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
+ res = mcr->result;
+ if (res != QM_MCR_RESULT_OK) {
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return -EIO;
+ }
+ if (opts) {
+ if (opts->we_mask & QM_INITFQ_WE_FQCTRL) {
+ if (opts->fqd.fq_ctrl & QM_FQCTRL_CGE)
+ fq_set(fq, QMAN_FQ_STATE_CGR_EN);
+ else
+ fq_clear(fq, QMAN_FQ_STATE_CGR_EN);
+ }
+ if (opts->we_mask & QM_INITFQ_WE_CGID)
+ fq->cgr_groupid = opts->fqd.cgid;
+ }
+ fq->state = (flags & QMAN_INITFQ_FLAG_SCHED) ?
+ qman_fq_state_sched : qman_fq_state_parked;
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return 0;
+}
+EXPORT_SYMBOL(qman_init_fq);
+
+int qman_schedule_fq(struct qman_fq *fq)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ int ret = 0;
+ u8 res;
+
+ if (fq->state != qman_fq_state_parked)
+ return -EINVAL;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
+ return -EINVAL;
+#endif
+ /* Issue a ALTERFQ_SCHED management command */
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ FQLOCK(fq);
+ if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
+ (fq->state != qman_fq_state_parked))) {
+ ret = -EBUSY;
+ goto out;
+ }
+ mcc = qm_mc_start(&p->p);
+ mcc->alterfq.fqid = fq->fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_SCHED);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_SCHED);
+ res = mcr->result;
+ if (res != QM_MCR_RESULT_OK) {
+ ret = -EIO;
+ goto out;
+ }
+ fq->state = qman_fq_state_sched;
+out:
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_schedule_fq);
+
+int qman_retire_fq(struct qman_fq *fq, u32 *flags)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ int rval;
+ u8 res;
+
+ if ((fq->state != qman_fq_state_parked) &&
+ (fq->state != qman_fq_state_sched))
+ return -EINVAL;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
+ return -EINVAL;
+#endif
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ FQLOCK(fq);
+ if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
+ (fq->state == qman_fq_state_retired) ||
+ (fq->state == qman_fq_state_oos))) {
+ rval = -EBUSY;
+ goto out;
+ }
+ rval = table_push_fq(p, fq);
+ if (rval)
+ goto out;
+ mcc = qm_mc_start(&p->p);
+ mcc->alterfq.fqid = fq->fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_RETIRE);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_RETIRE);
+ res = mcr->result;
+ /* "Elegant" would be to treat OK/PENDING the same way; set CHANGING,
+ * and defer the flags until FQRNI or FQRN (respectively) show up. But
+ * "Friendly" is to process OK immediately, and not set CHANGING. We do
+ * friendly, otherwise the caller doesn't necessarily have a fully
+ * "retired" FQ on return even if the retirement was immediate. However
+ * this does mean some code duplication between here and
+ * fq_state_change(). */
+ if (likely(res == QM_MCR_RESULT_OK)) {
+ rval = 0;
+ /* Process 'fq' right away, we'll ignore FQRNI */
+ if (mcr->alterfq.fqs & QM_MCR_FQS_NOTEMPTY)
+ fq_set(fq, QMAN_FQ_STATE_NE);
+ if (mcr->alterfq.fqs & QM_MCR_FQS_ORLPRESENT)
+ fq_set(fq, QMAN_FQ_STATE_ORL);
+ else
+ table_del_fq(p, fq);
+ if (flags)
+ *flags = fq->flags;
+ fq->state = qman_fq_state_retired;
+ if (fq->cb.fqs) {
+ /* Another issue with supporting "immediate" retirement
+ * is that we're forced to drop FQRNIs, because by the
+ * time they're seen it may already be "too late" (the
+ * fq may have been OOS'd and free()'d already). But if
+ * the upper layer wants a callback whether it's
+ * immediate or not, we have to fake a "MR" entry to
+ * look like an FQRNI... */
+ struct qm_mr_entry msg;
+ msg.verb = QM_MR_VERB_FQRNI;
+ msg.fq.fqs = mcr->alterfq.fqs;
+ msg.fq.fqid = fq->fqid;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ msg.fq.contextB = fq->key;
+#else
+ msg.fq.contextB = (u32)(uintptr_t)fq;
+#endif
+ fq->cb.fqs(p, fq, &msg);
+ }
+ } else if (res == QM_MCR_RESULT_PENDING) {
+ rval = 1;
+ fq_set(fq, QMAN_FQ_STATE_CHANGING);
+ } else {
+ rval = -EIO;
+ table_del_fq(p, fq);
+ }
+out:
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return rval;
+}
+EXPORT_SYMBOL(qman_retire_fq);
+
+int qman_oos_fq(struct qman_fq *fq)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ int ret = 0;
+ u8 res;
+
+ if (fq->state != qman_fq_state_retired)
+ return -EINVAL;
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
+ return -EINVAL;
+#endif
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ FQLOCK(fq);
+ if (unlikely((fq_isset(fq, QMAN_FQ_STATE_BLOCKOOS)) ||
+ (fq->state != qman_fq_state_retired))) {
+ ret = -EBUSY;
+ goto out;
+ }
+ mcc = qm_mc_start(&p->p);
+ mcc->alterfq.fqid = fq->fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_ALTER_OOS);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_ALTER_OOS);
+ res = mcr->result;
+ if (res != QM_MCR_RESULT_OK) {
+ ret = -EIO;
+ goto out;
+ }
+ fq->state = qman_fq_state_oos;
+out:
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_oos_fq);
+
+int qman_fq_flow_control(struct qman_fq *fq, int xon)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ int ret = 0;
+ u8 res;
+ u8 myverb;
+
+ if ((fq->state == qman_fq_state_oos) ||
+ (fq->state == qman_fq_state_retired) ||
+ (fq->state == qman_fq_state_parked))
+ return -EINVAL;
+
+#ifdef CONFIG_FSL_DPA_CHECKING
+ if (unlikely(fq_isset(fq, QMAN_FQ_FLAG_NO_MODIFY)))
+ return -EINVAL;
+#endif
+ /* Issue a ALTER_FQXON or ALTER_FQXOFF management command */
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ FQLOCK(fq);
+ if (unlikely((fq_isset(fq, QMAN_FQ_STATE_CHANGING)) ||
+ (fq->state == qman_fq_state_parked) ||
+ (fq->state == qman_fq_state_oos) ||
+ (fq->state == qman_fq_state_retired))) {
+ ret = -EBUSY;
+ goto out;
+ }
+ mcc = qm_mc_start(&p->p);
+ mcc->alterfq.fqid = fq->fqid;
+ mcc->alterfq.count = 0;
+ myverb = xon ? QM_MCC_VERB_ALTER_FQXON : QM_MCC_VERB_ALTER_FQXOFF;
+
+ qm_mc_commit(&p->p, myverb);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
+
+ res = mcr->result;
+ if (res != QM_MCR_RESULT_OK) {
+ ret = -EIO;
+ goto out;
+ }
+out:
+ FQUNLOCK(fq);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_fq_flow_control);
+
+int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ mcc->queryfq.fqid = fq->fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *fqd = mcr->queryfq.fqd;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res != QM_MCR_RESULT_OK)
+ return -EIO;
+ return 0;
+}
+EXPORT_SYMBOL(qman_query_fq);
+
+int qman_query_fq_np(struct qman_fq *fq, struct qm_mcr_queryfq_np *np)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ mcc->queryfq.fqid = fq->fqid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYFQ_NP);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCR_VERB_QUERYFQ_NP);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *np = mcr->queryfq_np;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res == QM_MCR_RESULT_ERR_FQID)
+ return -ERANGE;
+ else if (res != QM_MCR_RESULT_OK)
+ return -EIO;
+ return 0;
+}
+EXPORT_SYMBOL(qman_query_fq_np);
+
+int qman_query_wq(u8 query_dedicated, struct qm_mcr_querywq *wq)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res, myverb;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ myverb = (query_dedicated) ? QM_MCR_VERB_QUERYWQ_DEDICATED :
+ QM_MCR_VERB_QUERYWQ;
+ mcc = qm_mc_start(&p->p);
+ mcc->querywq.channel.id = wq->channel.id;
+ qm_mc_commit(&p->p, myverb);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == myverb);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *wq = mcr->querywq;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res != QM_MCR_RESULT_OK) {
+ pr_err("QUERYWQ failed: %s\n", mcr_result_str(res));
+ return -EIO;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(qman_query_wq);
+
+int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ mcc->querycgr.cgid = cgr->cgrid;
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCGR);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_QUERYCGR);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *cgrd = mcr->querycgr;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res != QM_MCR_RESULT_OK) {
+ pr_err("QUERY_CGR failed: %s\n", mcr_result_str(res));
+ return -EIO;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(qman_query_cgr);
+
+/* internal function used as a wait_event() expression */
+static int set_p_vdqcr(struct qman_portal *p, struct qman_fq *fq, u32 vdqcr)
+{
+ unsigned long irqflags __maybe_unused;
+ int ret = -EBUSY;
+ PORTAL_IRQ_LOCK(p, irqflags);
+ if (!p->vdqcr_owned) {
+ FQLOCK(fq);
+ if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
+ goto escape;
+ fq_set(fq, QMAN_FQ_STATE_VDQCR);
+ FQUNLOCK(fq);
+ p->vdqcr_owned = fq;
+ ret = 0;
+ }
+escape:
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ if (!ret)
+ qm_dqrr_vdqcr_set(&p->p, vdqcr);
+ return ret;
+}
+
+static int set_vdqcr(struct qman_portal **p, struct qman_fq *fq, u32 vdqcr)
+{
+ int ret;
+ *p = get_affine_portal();
+ ret = set_p_vdqcr(*p, fq, vdqcr);
+ put_affine_portal();
+ return ret;
+}
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+static int wait_p_vdqcr_start(struct qman_portal *p, struct qman_fq *fq,
+ u32 vdqcr, u32 flags)
+{
+ int ret = 0;
+ if (flags & QMAN_VOLATILE_FLAG_WAIT_INT)
+ ret = wait_event_interruptible(affine_queue,
+ !(ret = set_p_vdqcr(p, fq, vdqcr)));
+ else
+ wait_event(affine_queue, !(ret = set_p_vdqcr(p, fq, vdqcr)));
+ return ret;
+}
+
+static int wait_vdqcr_start(struct qman_portal **p, struct qman_fq *fq,
+ u32 vdqcr, u32 flags)
+{
+ int ret = 0;
+ if (flags & QMAN_VOLATILE_FLAG_WAIT_INT)
+ ret = wait_event_interruptible(affine_queue,
+ !(ret = set_vdqcr(p, fq, vdqcr)));
+ else
+ wait_event(affine_queue, !(ret = set_vdqcr(p, fq, vdqcr)));
+ return ret;
+}
+#endif
+
+int qman_p_volatile_dequeue(struct qman_portal *p, struct qman_fq *fq,
+ u32 flags __maybe_unused, u32 vdqcr)
+{
+ int ret;
+
+ if ((fq->state != qman_fq_state_parked) &&
+ (fq->state != qman_fq_state_retired))
+ return -EINVAL;
+ if (vdqcr & QM_VDQCR_FQID_MASK)
+ return -EINVAL;
+ if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
+ return -EBUSY;
+ vdqcr = (vdqcr & ~QM_VDQCR_FQID_MASK) | fq->fqid;
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_VOLATILE_FLAG_WAIT)
+ ret = wait_p_vdqcr_start(p, fq, vdqcr, flags);
+ else
+#endif
+ ret = set_p_vdqcr(p, fq, vdqcr);
+ if (ret)
+ return ret;
+ /* VDQCR is set */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_VOLATILE_FLAG_FINISH) {
+ if (flags & QMAN_VOLATILE_FLAG_WAIT_INT)
+ /* NB: don't propagate any error - the caller wouldn't
+ * know whether the VDQCR was issued or not. A signal
+ * could arrive after returning anyway, so the caller
+ * can check signal_pending() if that's an issue. */
+ wait_event_interruptible(affine_queue,
+ !fq_isset(fq, QMAN_FQ_STATE_VDQCR));
+ else
+ wait_event(affine_queue,
+ !fq_isset(fq, QMAN_FQ_STATE_VDQCR));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_volatile_dequeue);
+
+int qman_volatile_dequeue(struct qman_fq *fq, u32 flags __maybe_unused,
+ u32 vdqcr)
+{
+ struct qman_portal *p;
+ int ret;
+
+ if ((fq->state != qman_fq_state_parked) &&
+ (fq->state != qman_fq_state_retired))
+ return -EINVAL;
+ if (vdqcr & QM_VDQCR_FQID_MASK)
+ return -EINVAL;
+ if (fq_isset(fq, QMAN_FQ_STATE_VDQCR))
+ return -EBUSY;
+ vdqcr = (vdqcr & ~QM_VDQCR_FQID_MASK) | fq->fqid;
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_VOLATILE_FLAG_WAIT)
+ ret = wait_vdqcr_start(&p, fq, vdqcr, flags);
+ else
+#endif
+ ret = set_vdqcr(&p, fq, vdqcr);
+ if (ret)
+ return ret;
+ /* VDQCR is set */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_VOLATILE_FLAG_FINISH) {
+ if (flags & QMAN_VOLATILE_FLAG_WAIT_INT)
+ /* NB: don't propagate any error - the caller wouldn't
+ * know whether the VDQCR was issued or not. A signal
+ * could arrive after returning anyway, so the caller
+ * can check signal_pending() if that's an issue. */
+ wait_event_interruptible(affine_queue,
+ !fq_isset(fq, QMAN_FQ_STATE_VDQCR));
+ else
+ wait_event(affine_queue,
+ !fq_isset(fq, QMAN_FQ_STATE_VDQCR));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_volatile_dequeue);
+
+static noinline void update_eqcr_ci(struct qman_portal *p, u8 avail)
+{
+ if (avail)
+ qm_eqcr_cce_prefetch(&p->p);
+ else
+ qm_eqcr_cce_update(&p->p);
+}
+
+int qman_eqcr_is_empty(void)
+{
+ unsigned long irqflags __maybe_unused;
+ struct qman_portal *p = get_affine_portal();
+ u8 avail;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ update_eqcr_ci(p, 0);
+ avail = qm_eqcr_get_fill(&p->p);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return avail == 0;
+}
+EXPORT_SYMBOL(qman_eqcr_is_empty);
+
+void qman_set_dc_ern(qman_cb_dc_ern handler, int affine)
+{
+ if (affine) {
+ unsigned long irqflags __maybe_unused;
+ struct qman_portal *p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ p->cb_dc_ern = handler;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ } else
+ cb_dc_ern = handler;
+}
+EXPORT_SYMBOL(qman_set_dc_ern);
+
+static inline struct qm_eqcr_entry *try_p_eq_start(struct qman_portal *p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq;
+ u8 avail;
+ PORTAL_IRQ_LOCK(p, (*irqflags));
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (p->eqci_owned) {
+ PORTAL_IRQ_UNLOCK(p, (*irqflags));
+ return NULL;
+ }
+ p->eqci_owned = fq;
+ }
+#endif
+ if (p->use_eqcr_ci_stashing) {
+ /*
+ * The stashing case is easy, only update if we need to in
+ * order to try and liberate ring entries.
+ */
+ eq = qm_eqcr_start_stash(&p->p);
+ } else {
+ /*
+ * The non-stashing case is harder, need to prefetch ahead of
+ * time.
+ */
+ avail = qm_eqcr_get_avail(&p->p);
+ if (avail < 2)
+ update_eqcr_ci(p, avail);
+ eq = qm_eqcr_start_no_stash(&p->p);
+ }
+
+ if (unlikely(!eq)) {
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC)))
+ p->eqci_owned = NULL;
+#endif
+ PORTAL_IRQ_UNLOCK(p, (*irqflags));
+ return NULL;
+ }
+ if (flags & QMAN_ENQUEUE_FLAG_DCA)
+ eq->dca = QM_EQCR_DCA_ENABLE |
+ ((flags & QMAN_ENQUEUE_FLAG_DCA_PARK) ?
+ QM_EQCR_DCA_PARK : 0) |
+ ((flags >> 8) & QM_EQCR_DCA_IDXMASK);
+ eq->fqid = fq->fqid;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ eq->tag = fq->key;
+#else
+ eq->tag = (u32)(uintptr_t)fq;
+#endif
+ eq->fd = *fd;
+ return eq;
+}
+
+static inline struct qm_eqcr_entry *try_eq_start(struct qman_portal **p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq;
+ *p = get_affine_portal();
+ eq = try_p_eq_start(*p, irqflags, fq, fd, flags);
+ if (!eq)
+ put_affine_portal();
+ return eq;
+}
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+static noinline struct qm_eqcr_entry *__wait_eq_start(struct qman_portal **p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq = try_eq_start(p, irqflags, fq, fd, flags);
+ if (!eq)
+ qm_eqcr_set_ithresh(&(*p)->p, EQCR_ITHRESH);
+ return eq;
+}
+static noinline struct qm_eqcr_entry *wait_eq_start(struct qman_portal **p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq;
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (eq = __wait_eq_start(p, irqflags, fq, fd, flags)));
+ else
+ wait_event(affine_queue,
+ (eq = __wait_eq_start(p, irqflags, fq, fd, flags)));
+ return eq;
+}
+static noinline struct qm_eqcr_entry *__wait_p_eq_start(struct qman_portal *p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq = try_p_eq_start(p, irqflags, fq, fd, flags);
+ if (!eq)
+ qm_eqcr_set_ithresh(&p->p, EQCR_ITHRESH);
+ return eq;
+}
+static noinline struct qm_eqcr_entry *wait_p_eq_start(struct qman_portal *p,
+ unsigned long *irqflags __maybe_unused,
+ struct qman_fq *fq,
+ const struct qm_fd *fd,
+ u32 flags)
+{
+ struct qm_eqcr_entry *eq;
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (eq = __wait_p_eq_start(p, irqflags, fq, fd, flags)));
+ else
+ wait_event(affine_queue,
+ (eq = __wait_p_eq_start(p, irqflags, fq, fd, flags)));
+ return eq;
+}
+#endif
+
+int qman_p_enqueue(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags)
+{
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_p_eq_start(p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_p_eq_start(p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ /* Factor the below out, it's used from qman_enqueue_orp() too */
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_enqueue);
+
+int qman_enqueue(struct qman_fq *fq, const struct qm_fd *fd, u32 flags)
+{
+ struct qman_portal *p;
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_eq_start(&p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_eq_start(&p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ /* Factor the below out, it's used from qman_enqueue_orp() too */
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_enqueue);
+
+int qman_p_enqueue_orp(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags,
+ struct qman_fq *orp, u16 orp_seqnum)
+{
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_p_eq_start(p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_p_eq_start(p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* Process ORP-specifics here */
+ if (flags & QMAN_ENQUEUE_FLAG_NLIS)
+ orp_seqnum |= QM_EQCR_SEQNUM_NLIS;
+ else {
+ orp_seqnum &= ~QM_EQCR_SEQNUM_NLIS;
+ if (flags & QMAN_ENQUEUE_FLAG_NESN)
+ orp_seqnum |= QM_EQCR_SEQNUM_NESN;
+ else
+ /* No need to check 4 QMAN_ENQUEUE_FLAG_HOLE */
+ orp_seqnum &= ~QM_EQCR_SEQNUM_NESN;
+ }
+ eq->seqnum = orp_seqnum;
+ eq->orp = orp->fqid;
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_ORP |
+ ((flags & (QMAN_ENQUEUE_FLAG_HOLE | QMAN_ENQUEUE_FLAG_NESN)) ?
+ 0 : QM_EQCR_VERB_CMD_ENQUEUE) |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_enqueue_orp);
+
+int qman_enqueue_orp(struct qman_fq *fq, const struct qm_fd *fd, u32 flags,
+ struct qman_fq *orp, u16 orp_seqnum)
+{
+ struct qman_portal *p;
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_eq_start(&p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_eq_start(&p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* Process ORP-specifics here */
+ if (flags & QMAN_ENQUEUE_FLAG_NLIS)
+ orp_seqnum |= QM_EQCR_SEQNUM_NLIS;
+ else {
+ orp_seqnum &= ~QM_EQCR_SEQNUM_NLIS;
+ if (flags & QMAN_ENQUEUE_FLAG_NESN)
+ orp_seqnum |= QM_EQCR_SEQNUM_NESN;
+ else
+ /* No need to check 4 QMAN_ENQUEUE_FLAG_HOLE */
+ orp_seqnum &= ~QM_EQCR_SEQNUM_NESN;
+ }
+ eq->seqnum = orp_seqnum;
+ eq->orp = orp->fqid;
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_ORP |
+ ((flags & (QMAN_ENQUEUE_FLAG_HOLE | QMAN_ENQUEUE_FLAG_NESN)) ?
+ 0 : QM_EQCR_VERB_CMD_ENQUEUE) |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_enqueue_orp);
+
+int qman_p_enqueue_precommit(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags,
+ qman_cb_precommit cb, void *cb_arg)
+{
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_p_eq_start(p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_p_eq_start(p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* invoke user supplied callback function before writing commit verb */
+ if (cb(cb_arg)) {
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ return -EINVAL;
+ }
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ /* Factor the below out, it's used from qman_enqueue_orp() too */
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_p_enqueue_precommit);
+
+int qman_enqueue_precommit(struct qman_fq *fq, const struct qm_fd *fd,
+ u32 flags, qman_cb_precommit cb, void *cb_arg)
+{
+ struct qman_portal *p;
+ struct qm_eqcr_entry *eq;
+ unsigned long irqflags __maybe_unused;
+
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT)
+ eq = wait_eq_start(&p, &irqflags, fq, fd, flags);
+ else
+#endif
+ eq = try_eq_start(&p, &irqflags, fq, fd, flags);
+ if (!eq)
+ return -EBUSY;
+ /* invoke user supplied callback function before writing commit verb */
+ if (cb(cb_arg)) {
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return -EINVAL;
+ }
+ /* Note: QM_EQCR_VERB_INTERRUPT == QMAN_ENQUEUE_FLAG_WAIT_SYNC */
+ qm_eqcr_pvb_commit(&p->p, QM_EQCR_VERB_CMD_ENQUEUE |
+ (flags & (QM_EQCR_VERB_COLOUR_MASK | QM_EQCR_VERB_INTERRUPT)));
+ /* Factor the below out, it's used from qman_enqueue_orp() too */
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+ if (unlikely((flags & QMAN_ENQUEUE_FLAG_WAIT) &&
+ (flags & QMAN_ENQUEUE_FLAG_WAIT_SYNC))) {
+ if (flags & QMAN_ENQUEUE_FLAG_WAIT_INT)
+ wait_event_interruptible(affine_queue,
+ (p->eqci_owned != fq));
+ else
+ wait_event(affine_queue, (p->eqci_owned != fq));
+ }
+#endif
+ return 0;
+}
+EXPORT_SYMBOL(qman_enqueue_precommit);
+
+int qman_modify_cgr(struct qman_cgr *cgr, u32 flags,
+ struct qm_mcc_initcgr *opts)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+ u8 verb = QM_MCC_VERB_MODIFYCGR;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ if (opts)
+ mcc->initcgr = *opts;
+ mcc->initcgr.cgid = cgr->cgrid;
+ if (flags & QMAN_CGR_FLAG_USE_INIT)
+ verb = QM_MCC_VERB_INITCGR;
+ qm_mc_commit(&p->p, verb);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == verb);
+ res = mcr->result;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return (res == QM_MCR_RESULT_OK) ? 0 : -EIO;
+}
+EXPORT_SYMBOL(qman_modify_cgr);
+
+#define TARG_MASK(n) (0x80000000 >> (n->config->public_cfg.channel - \
+ QM_CHANNEL_SWPORTAL0))
+#define PORTAL_IDX(n) (n->config->public_cfg.channel - QM_CHANNEL_SWPORTAL0)
+
+int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
+ struct qm_mcc_initcgr *opts)
+{
+ unsigned long irqflags __maybe_unused;
+ struct qm_mcr_querycgr cgr_state;
+ struct qm_mcc_initcgr local_opts;
+ int ret;
+ struct qman_portal *p;
+
+ /* We have to check that the provided CGRID is within the limits of the
+ * data-structures, for obvious reasons. However we'll let h/w take
+ * care of determining whether it's within the limits of what exists on
+ * the SoC. */
+ if (cgr->cgrid >= __CGR_NUM)
+ return -EINVAL;
+
+ p = get_affine_portal();
+
+ memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
+ cgr->chan = p->config->public_cfg.channel;
+ spin_lock_irqsave(&p->cgr_lock, irqflags);
+
+ /* if no opts specified, just add it to the list */
+ if (!opts)
+ goto add_list;
+
+ ret = qman_query_cgr(cgr, &cgr_state);
+ if (ret)
+ goto release_lock;
+ if (opts)
+ local_opts = *opts;
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
+ local_opts.cgr.cscn_targ_upd_ctrl =
+ QM_CGR_TARG_UDP_CTRL_WRITE_BIT | PORTAL_IDX(p);
+ else
+ /* Overwrite TARG */
+ local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ |
+ TARG_MASK(p);
+ local_opts.we_mask |= QM_CGR_WE_CSCN_TARG;
+
+ /* send init if flags indicate so */
+ if (opts && (flags & QMAN_CGR_FLAG_USE_INIT))
+ ret = qman_modify_cgr(cgr, QMAN_CGR_FLAG_USE_INIT, &local_opts);
+ else
+ ret = qman_modify_cgr(cgr, 0, &local_opts);
+ if (ret)
+ goto release_lock;
+add_list:
+ list_add(&cgr->node, &p->cgr_cbs);
+
+ /* Determine if newly added object requires its callback to be called */
+ ret = qman_query_cgr(cgr, &cgr_state);
+ if (ret) {
+ /* we can't go back, so proceed and return success, but screen
+ * and wail to the log file */
+ pr_crit("CGR HW state partially modified\n");
+ ret = 0;
+ goto release_lock;
+ }
+ if (cgr->cb && cgr_state.cgr.cscn_en && qman_cgrs_get(&p->cgrs[1],
+ cgr->cgrid))
+ cgr->cb(p, cgr, 1);
+release_lock:
+ spin_unlock_irqrestore(&p->cgr_lock, irqflags);
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_create_cgr);
+
+int qman_create_cgr_to_dcp(struct qman_cgr *cgr, u32 flags, u16 dcp_portal,
+ struct qm_mcc_initcgr *opts)
+{
+ unsigned long irqflags __maybe_unused;
+ struct qm_mcc_initcgr local_opts;
+ int ret;
+
+ if ((qman_ip_rev & 0xFF00) < QMAN_REV30) {
+ pr_warn("This QMan version doesn't support to send CSCN to"
+ " DCP portal\n");
+ return -EINVAL;
+ }
+ /* We have to check that the provided CGRID is within the limits of the
+ * data-structures, for obvious reasons. However we'll let h/w take
+ * care of determining whether it's within the limits of what exists on
+ * the SoC.
+ */
+ if (cgr->cgrid >= __CGR_NUM)
+ return -EINVAL;
+
+ memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
+ if (opts)
+ local_opts = *opts;
+
+ local_opts.cgr.cscn_targ_upd_ctrl = QM_CGR_TARG_UDP_CTRL_WRITE_BIT |
+ QM_CGR_TARG_UDP_CTRL_DCP | dcp_portal;
+ local_opts.we_mask |= QM_CGR_WE_CSCN_TARG;
+
+ /* send init if flags indicate so */
+ if (opts && (flags & QMAN_CGR_FLAG_USE_INIT))
+ ret = qman_modify_cgr(cgr, QMAN_CGR_FLAG_USE_INIT,
+ &local_opts);
+ else
+ ret = qman_modify_cgr(cgr, 0, &local_opts);
+
+ return ret;
+}
+EXPORT_SYMBOL(qman_create_cgr_to_dcp);
+
+int qman_delete_cgr(struct qman_cgr *cgr)
+{
+ unsigned long irqflags __maybe_unused;
+ struct qm_mcr_querycgr cgr_state;
+ struct qm_mcc_initcgr local_opts;
+ int ret = 0;
+ struct qman_cgr *i;
+ struct qman_portal *p = get_affine_portal();
+
+ if (cgr->chan != p->config->public_cfg.channel) {
+ pr_crit("Attempting to delete cgr from different portal "
+ "than it was create: create 0x%x, delete 0x%x\n",
+ cgr->chan, p->config->public_cfg.channel);
+ ret = -EINVAL;
+ goto put_portal;
+ }
+ memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
+ spin_lock_irqsave(&p->cgr_lock, irqflags);
+ list_del(&cgr->node);
+ /*
+ * If there are no other CGR objects for this CGRID in the list, update
+ * CSCN_TARG accordingly
+ */
+ list_for_each_entry(i, &p->cgr_cbs, node)
+ if ((i->cgrid == cgr->cgrid) && i->cb)
+ goto release_lock;
+ ret = qman_query_cgr(cgr, &cgr_state);
+ if (ret) {
+ /* add back to the list */
+ list_add(&cgr->node, &p->cgr_cbs);
+ goto release_lock;
+ }
+ /* Overwrite TARG */
+ local_opts.we_mask = QM_CGR_WE_CSCN_TARG;
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
+ local_opts.cgr.cscn_targ_upd_ctrl = PORTAL_IDX(p);
+ else
+ local_opts.cgr.cscn_targ = cgr_state.cgr.cscn_targ &
+ ~(TARG_MASK(p));
+ ret = qman_modify_cgr(cgr, 0, &local_opts);
+ if (ret)
+ /* add back to the list */
+ list_add(&cgr->node, &p->cgr_cbs);
+release_lock:
+ spin_unlock_irqrestore(&p->cgr_lock, irqflags);
+put_portal:
+ put_affine_portal();
+ return ret;
+}
+EXPORT_SYMBOL(qman_delete_cgr);
+
+int qman_set_wpm(int wpm_enable)
+{
+ return qm_set_wpm(wpm_enable);
+}
+EXPORT_SYMBOL(qman_set_wpm);
+
+int qman_get_wpm(int *wpm_enable)
+{
+ return qm_get_wpm(wpm_enable);
+}
+EXPORT_SYMBOL(qman_get_wpm);
+
+int qman_shutdown_fq(u32 fqid)
+{
+ struct qman_portal *p;
+ unsigned long irqflags __maybe_unused;
+ int ret;
+ struct qm_portal *low_p;
+ p = get_affine_portal();
+ PORTAL_IRQ_LOCK(p, irqflags);
+ low_p = &p->p;
+ ret = qm_shutdown_fq(&low_p, 1, fqid);
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return ret;
+}
+
+const struct qm_portal_config *qman_get_qm_portal_config(
+ struct qman_portal *portal)
+{
+ return portal->sharing_redirect ? NULL : portal->config;
+}
diff --git a/drivers/soc/freescale/qman_portal.c b/drivers/soc/freescale/qman_portal.c
new file mode 100644
index 0000000..ac1b80f
--- /dev/null
+++ b/drivers/soc/freescale/qman_portal.c
@@ -0,0 +1,503 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qman_priv.h"
+
+/* Global variable containing revision id (even on non-control plane systems
+ * where CCSR isn't available) */
+u16 qman_ip_rev;
+EXPORT_SYMBOL(qman_ip_rev);
+u16 qm_channel_pool1 = QMAN_CHANNEL_POOL1;
+EXPORT_SYMBOL(qm_channel_pool1);
+u16 qm_channel_caam = QMAN_CHANNEL_CAAM;
+EXPORT_SYMBOL(qm_channel_caam);
+u16 qm_channel_pme = QMAN_CHANNEL_PME;
+EXPORT_SYMBOL(qm_channel_pme);
+u16 qm_channel_dce = QMAN_CHANNEL_DCE;
+EXPORT_SYMBOL(qm_channel_dce);
+
+/* size of the fqd region in bytes */
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+static u32 fqd_size = (PAGE_SIZE << CONFIG_FSL_QMAN_FQD_SZ);
+#endif
+
+/* For these variables, and the portal-initialisation logic, the
+ * comments in bman_driver.c apply here so won't be repeated. */
+static struct qman_portal *shared_portals[NR_CPUS];
+static int num_shared_portals;
+static int shared_portals_idx;
+static LIST_HEAD(unused_pcfgs);
+
+/* A SDQCR mask comprising all the available/visible pool channels */
+static u32 pools_sdqcr;
+
+#define STR_ERR_NOPROP "No '%s' property in node %s\n"
+#define STR_ERR_CELL "'%s' is not a %d-cell range in node %s\n"
+
+static void qman_get_ip_revision(struct device_node *dn)
+{
+ u16 ip_rev = 0;
+ for_each_compatible_node(dn, NULL, "fsl,qman-portal") {
+ if (!of_device_is_available(dn))
+ continue;
+ if (of_device_is_compatible(dn, "fsl,qman-portal-1.0") ||
+ of_device_is_compatible(dn, "fsl,qman-portal-1.0.0")) {
+ pr_err("QMAN rev1.0 on P4080 rev1 is not supported!\n");
+ BUG_ON(1);
+ } else if (of_device_is_compatible(dn, "fsl,qman-portal-1.1") ||
+ of_device_is_compatible(dn, "fsl,qman-portal-1.1.0")) {
+ ip_rev = QMAN_REV11;
+ } else if (of_device_is_compatible(dn, "fsl,qman-portal-1.2") ||
+ of_device_is_compatible(dn, "fsl,qman-portal-1.2.0")) {
+ ip_rev = QMAN_REV12;
+ } else if (of_device_is_compatible(dn, "fsl,qman-portal-2.0") ||
+ of_device_is_compatible(dn, "fsl,qman-portal-2.0.0")) {
+ ip_rev = QMAN_REV20;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.0.0")) {
+ ip_rev = QMAN_REV30;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.0.1")) {
+ ip_rev = QMAN_REV30;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.1.0")) {
+ ip_rev = QMAN_REV31;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.1.1")) {
+ ip_rev = QMAN_REV31;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.1.2")) {
+ ip_rev = QMAN_REV31;
+ } else if (of_device_is_compatible(dn,
+ "fsl,qman-portal-3.1.3")) {
+ ip_rev = QMAN_REV31;
+ } else {
+ pr_warn("unknown QMan version in portal node,"
+ "default to rev1.1\n");
+ ip_rev = QMAN_REV11;
+ }
+
+ if (!qman_ip_rev) {
+ if (ip_rev) {
+ qman_ip_rev = ip_rev;
+ } else {
+ pr_warn("unknown Qman version,"
+ " default to rev1.1\n");
+ qman_ip_rev = QMAN_REV11;
+ }
+ } else if (ip_rev && (qman_ip_rev != ip_rev))
+ pr_warn("Revision=0x%04x, but portal '%s' has"
+ " 0x%04x\n",
+ qman_ip_rev, dn->full_name, ip_rev);
+ if (qman_ip_rev == ip_rev)
+ break;
+ }
+}
+
+/* Parse a portal node, perform generic mapping duties and return the config. It
+ * is not known at this stage for what purpose (or even if) the portal will be
+ * used. */
+static struct qm_portal_config * __init parse_pcfg(struct device_node *node)
+{
+ struct qm_portal_config *pcfg;
+ const u32 *channel;
+ int irq, ret;
+
+ pcfg = kmalloc(sizeof(*pcfg), GFP_KERNEL);
+ if (!pcfg) {
+ pr_err("can't allocate portal config");
+ return NULL;
+ }
+
+ /*
+ * This is a *horrible hack*, but the IOMMU/PAMU driver needs a
+ * 'struct device' in order to get the PAMU stashing setup and the QMan
+ * portal [driver] won't function at all without ring stashing
+ *
+ * Making the QMan portal driver nice and proper is part of the
+ * upstreaming effort
+ */
+ pcfg->dev.bus = &platform_bus_type;
+ pcfg->dev.of_node = node;
+#ifdef CONFIG_IOMMU_API
+ pcfg->dev.archdata.iommu_domain = NULL;
+#endif
+
+ ret = of_address_to_resource(node, DPA_PORTAL_CE,
+ &pcfg->addr_phys[DPA_PORTAL_CE]);
+ if (ret) {
+ pr_err("Can't get %s property '%s'\n", node->full_name,
+ "reg::CE");
+ goto err;
+ }
+ ret = of_address_to_resource(node, DPA_PORTAL_CI,
+ &pcfg->addr_phys[DPA_PORTAL_CI]);
+ if (ret) {
+ pr_err("Can't get %s property '%s'\n", node->full_name,
+ "reg::CI");
+ goto err;
+ }
+
+ channel = of_get_property(node, "fsl,qman-channel-id", &ret);
+ if (!channel || (ret != 4)) {
+ pr_err("Can't get %s property '%s'\n", node->full_name,
+ "fsl,qman-channel-id");
+ goto err;
+ }
+ pcfg->public_cfg.channel = *channel;
+ pcfg->public_cfg.cpu = -1;
+ irq = irq_of_parse_and_map(node, 0);
+ if (irq == NO_IRQ) {
+ pr_err("Can't get %s property '%s'\n", node->full_name,
+ "interrupts");
+ goto err;
+ }
+ pcfg->public_cfg.irq = irq;
+#ifdef CONFIG_FSL_QMAN_CONFIG
+ /* We need the same LIODN offset for all portals */
+ qman_liodn_fixup(pcfg->public_cfg.channel);
+#endif
+
+ pcfg->addr_virt[DPA_PORTAL_CE] = ioremap_prot(
+ pcfg->addr_phys[DPA_PORTAL_CE].start,
+ resource_size(&pcfg->addr_phys[DPA_PORTAL_CE]),
+ 0);
+ pcfg->addr_virt[DPA_PORTAL_CI] = ioremap_prot(
+ pcfg->addr_phys[DPA_PORTAL_CI].start,
+ resource_size(&pcfg->addr_phys[DPA_PORTAL_CI]),
+ _PAGE_GUARDED | _PAGE_NO_CACHE);
+
+ return pcfg;
+err:
+ kfree(pcfg);
+ return NULL;
+}
+
+static struct qm_portal_config *get_pcfg(struct list_head *list)
+{
+ struct qm_portal_config *pcfg;
+ if (list_empty(list))
+ return NULL;
+ pcfg = list_entry(list->prev, struct qm_portal_config, list);
+ list_del(&pcfg->list);
+ return pcfg;
+}
+
+static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu)
+{
+#ifdef CONFIG_FSL_PAMU
+ int ret;
+ int window_count = 1;
+ struct iommu_domain_geometry geom_attr;
+ struct pamu_stash_attribute stash_attr;
+
+ pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type);
+ if (!pcfg->iommu_domain) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_alloc() failed",
+ __func__);
+ goto _no_iommu;
+ }
+ geom_attr.aperture_start = 0;
+ geom_attr.aperture_end =
+ ((dma_addr_t)1 << min(8 * sizeof(dma_addr_t), (size_t)36)) - 1;
+ geom_attr.force_aperture = true;
+ ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_GEOMETRY,
+ &geom_attr);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_set_attr() = %d",
+ __func__, ret);
+ goto _iommu_domain_free;
+ }
+ ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_WINDOWS,
+ &window_count);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_set_attr() = %d",
+ __func__, ret);
+ goto _iommu_domain_free;
+ }
+ stash_attr.cpu = cpu;
+ stash_attr.cache = PAMU_ATTR_CACHE_L1;
+ ret = iommu_domain_set_attr(pcfg->iommu_domain,
+ DOMAIN_ATTR_FSL_PAMU_STASH,
+ &stash_attr);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_set_attr() = %d",
+ __func__, ret);
+ goto _iommu_domain_free;
+ }
+ ret = iommu_domain_window_enable(pcfg->iommu_domain, 0, 0, 1ULL << 36,
+ IOMMU_READ | IOMMU_WRITE);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_window_enable() = %d",
+ __func__, ret);
+ goto _iommu_domain_free;
+ }
+ ret = iommu_attach_device(pcfg->iommu_domain, &pcfg->dev);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_device_attach() = %d",
+ __func__, ret);
+ goto _iommu_domain_free;
+ }
+ ret = iommu_domain_set_attr(pcfg->iommu_domain,
+ DOMAIN_ATTR_FSL_PAMU_ENABLE,
+ &window_count);
+ if (ret < 0) {
+ pr_err(KBUILD_MODNAME ":%s(): iommu_domain_set_attr() = %d",
+ __func__, ret);
+ goto _iommu_detach_device;
+ }
+
+_no_iommu:
+#endif
+#ifdef CONFIG_FSL_QMAN_CONFIG
+ if (qman_set_sdest(pcfg->public_cfg.channel, cpu))
+#endif
+ pr_warn("Failed to set QMan portal's stash request queue\n");
+
+ return;
+
+#ifdef CONFIG_FSL_PAMU
+_iommu_detach_device:
+ iommu_detach_device(pcfg->iommu_domain, NULL);
+_iommu_domain_free:
+ iommu_domain_free(pcfg->iommu_domain);
+ pcfg->iommu_domain = NULL;
+#endif
+}
+
+static struct qman_portal *init_pcfg(struct qm_portal_config *pcfg)
+{
+ struct qman_portal *p;
+
+ pcfg->iommu_domain = NULL;
+ portal_set_cpu(pcfg, pcfg->public_cfg.cpu);
+ p = qman_create_affine_portal(pcfg, NULL);
+ if (p) {
+ u32 irq_sources = 0;
+ /* Determine what should be interrupt-vs-poll driven */
+#ifdef CONFIG_FSL_DPA_PIRQ_SLOW
+ irq_sources |= QM_PIRQ_EQCI | QM_PIRQ_EQRI | QM_PIRQ_MRI |
+ QM_PIRQ_CSCI;
+#endif
+#ifdef CONFIG_FSL_DPA_PIRQ_FAST
+ irq_sources |= QM_PIRQ_DQRI;
+#endif
+ qman_p_irqsource_add(p, irq_sources);
+ pr_info("Qman portal %sinitialised, cpu %d\n",
+ pcfg->public_cfg.is_shared ? "(shared) " : "",
+ pcfg->public_cfg.cpu);
+ } else
+ pr_crit("Qman portal failure on cpu %d\n",
+ pcfg->public_cfg.cpu);
+ return p;
+}
+
+static void init_slave(int cpu)
+{
+ struct qman_portal *p;
+ struct cpumask oldmask = *tsk_cpus_allowed(current);
+ set_cpus_allowed_ptr(current, get_cpu_mask(cpu));
+ p = qman_create_affine_slave(shared_portals[shared_portals_idx++], cpu);
+ if (!p)
+ pr_err("Qman slave portal failure on cpu %d\n", cpu);
+ else
+ pr_info("Qman portal %sinitialised, cpu %d\n", "(slave) ", cpu);
+ set_cpus_allowed_ptr(current, &oldmask);
+ if (shared_portals_idx >= num_shared_portals)
+ shared_portals_idx = 0;
+}
+
+static struct cpumask want_unshared __initdata;
+static struct cpumask want_shared __initdata;
+
+static int __init parse_qportals(char *str)
+{
+ return parse_portals_bootarg(str, &want_shared, &want_unshared,
+ "qportals");
+}
+__setup("qportals=", parse_qportals);
+
+static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
+ unsigned int cpu)
+{
+ struct pamu_stash_attribute stash_attr;
+ int ret;
+
+ if (pcfg->iommu_domain) {
+ stash_attr.cpu = cpu;
+ stash_attr.cache = PAMU_ATTR_CACHE_L1;
+ ret = iommu_domain_set_attr(pcfg->iommu_domain,
+ DOMAIN_ATTR_FSL_PAMU_STASH, &stash_attr);
+ if (ret < 0) {
+ pr_err("Failed to update pamu stash setting\n");
+ return;
+ }
+ }
+#ifdef CONFIG_FSL_QMAN_CONFIG
+ if (qman_set_sdest(pcfg->public_cfg.channel, cpu))
+#endif
+ pr_warn("Failed to update portal's stash request queue\n");
+}
+
+static void qman_offline_cpu(unsigned int cpu)
+{
+ struct qman_portal *p;
+ const struct qm_portal_config *pcfg;
+ p = (struct qman_portal *)affine_portals[cpu];
+ if (p) {
+ pcfg = qman_get_qm_portal_config(p);
+ if (pcfg) {
+ irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(0));
+ qman_portal_update_sdest(pcfg, 0);
+ }
+ }
+}
+
+__init int qman_init(void)
+{
+ struct cpumask slave_cpus;
+ struct cpumask unshared_cpus = *cpu_none_mask;
+ struct cpumask shared_cpus = *cpu_none_mask;
+ LIST_HEAD(unshared_pcfgs);
+ LIST_HEAD(shared_pcfgs);
+ struct device_node *dn;
+ struct qm_portal_config *pcfg;
+ struct qman_portal *p;
+ int cpu;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ int ret;
+#endif
+ struct cpumask offline_cpus;
+
+ /* Initialise the Qman (CCSR) device */
+ for_each_compatible_node(dn, NULL, "fsl,qman") {
+ if (!qman_init_ccsr(dn))
+ pr_info("Qman err interrupt handler present\n");
+ else
+ pr_err("Qman CCSR setup failed\n");
+ }
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ /* Setup lookup table for FQ demux */
+ ret = qman_setup_fq_lookup_table(fqd_size/64);
+ if (ret)
+ return ret;
+#endif
+
+ /* Get qman ip revision */
+ qman_get_ip_revision(dn);
+ if ((qman_ip_rev & 0xff00) >= QMAN_REV30) {
+ qm_channel_pool1 = QMAN_CHANNEL_POOL1_REV3;
+ qm_channel_caam = QMAN_CHANNEL_CAAM_REV3;
+ qm_channel_pme = QMAN_CHANNEL_PME_REV3;
+ }
+
+ memset(affine_portals, 0, sizeof(void *) * num_possible_cpus());
+ /* Initialise portals. See bman_driver.c for comments */
+ for_each_compatible_node(dn, NULL, "fsl,qman-portal") {
+ if (!of_device_is_available(dn))
+ continue;
+ pcfg = parse_pcfg(dn);
+ if (pcfg) {
+ pcfg->public_cfg.pools = pools_sdqcr;
+ list_add_tail(&pcfg->list, &unused_pcfgs);
+ }
+ }
+ for_each_possible_cpu(cpu) {
+ if (cpumask_test_cpu(cpu, &want_shared)) {
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &shared_pcfgs);
+ cpumask_set_cpu(cpu, &shared_cpus);
+ }
+ if (cpumask_test_cpu(cpu, &want_unshared)) {
+ if (cpumask_test_cpu(cpu, &shared_cpus))
+ continue;
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &unshared_pcfgs);
+ cpumask_set_cpu(cpu, &unshared_cpus);
+ }
+ }
+ if (list_empty(&shared_pcfgs) && list_empty(&unshared_pcfgs)) {
+ for_each_possible_cpu(cpu) {
+ pcfg = get_pcfg(&unused_pcfgs);
+ if (!pcfg)
+ break;
+ pcfg->public_cfg.cpu = cpu;
+ list_add_tail(&pcfg->list, &unshared_pcfgs);
+ cpumask_set_cpu(cpu, &unshared_cpus);
+ }
+ }
+ cpumask_andnot(&slave_cpus, cpu_possible_mask, &shared_cpus);
+ cpumask_andnot(&slave_cpus, &slave_cpus, &unshared_cpus);
+ if (cpumask_empty(&slave_cpus)) {
+ if (!list_empty(&shared_pcfgs)) {
+ cpumask_or(&unshared_cpus, &unshared_cpus,
+ &shared_cpus);
+ cpumask_clear(&shared_cpus);
+ list_splice_tail(&shared_pcfgs, &unshared_pcfgs);
+ INIT_LIST_HEAD(&shared_pcfgs);
+ }
+ } else {
+ if (list_empty(&shared_pcfgs)) {
+ pcfg = get_pcfg(&unshared_pcfgs);
+ if (!pcfg) {
+ pr_crit("No QMan portals available!\n");
+ return 0;
+ }
+ cpumask_clear_cpu(pcfg->public_cfg.cpu, &unshared_cpus);
+ cpumask_set_cpu(pcfg->public_cfg.cpu, &shared_cpus);
+ list_add_tail(&pcfg->list, &shared_pcfgs);
+ }
+ }
+ list_for_each_entry(pcfg, &unshared_pcfgs, list) {
+ pcfg->public_cfg.is_shared = 0;
+ p = init_pcfg(pcfg);
+ }
+ list_for_each_entry(pcfg, &shared_pcfgs, list) {
+ pcfg->public_cfg.is_shared = 1;
+ p = init_pcfg(pcfg);
+ if (p)
+ shared_portals[num_shared_portals++] = p;
+ }
+ if (!cpumask_empty(&slave_cpus))
+ for_each_cpu(cpu, &slave_cpus)
+ init_slave(cpu);
+ pr_info("Qman portals initialised\n");
+ cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask);
+ for_each_cpu(cpu, &offline_cpus)
+ qman_offline_cpu(cpu);
+ return 0;
+}
diff --git a/drivers/soc/freescale/qman_priv.h b/drivers/soc/freescale/qman_priv.h
new file mode 100644
index 0000000..da9021b
--- /dev/null
+++ b/drivers/soc/freescale/qman_priv.h
@@ -0,0 +1,275 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "dpaa_sys.h"
+#include <linux/fsl_qman.h>
+#include <linux/iommu.h>
+#include <asm/fsl_pamu_stash.h>
+
+#if !defined(CONFIG_FSL_QMAN_FQ_LOOKUP) && defined(CONFIG_PPC64)
+#error "_PPC64 requires _FSL_QMAN_FQ_LOOKUP"
+#endif
+
+ /* ----------------- */
+ /* Congestion Groups */
+ /* ----------------- */
+/* This wrapper represents a bit-array for the state of the 256 Qman congestion
+ * groups. Is also used as a *mask* for congestion groups, eg. so we ignore
+ * those that don't concern us. We harness the structure and accessor details
+ * already used in the management command to query congestion groups. */
+struct qman_cgrs {
+ struct __qm_mcr_querycongestion q;
+};
+static inline void qman_cgrs_init(struct qman_cgrs *c)
+{
+ memset(c, 0, sizeof(*c));
+}
+static inline void qman_cgrs_fill(struct qman_cgrs *c)
+{
+ memset(c, 0xff, sizeof(*c));
+}
+static inline int qman_cgrs_get(struct qman_cgrs *c, int num)
+{
+ return QM_MCR_QUERYCONGESTION(&c->q, num);
+}
+static inline void qman_cgrs_set(struct qman_cgrs *c, int num)
+{
+ c->q.__state[__CGR_WORD(num)] |= (0x80000000 >> __CGR_SHIFT(num));
+}
+static inline void qman_cgrs_unset(struct qman_cgrs *c, int num)
+{
+ c->q.__state[__CGR_WORD(num)] &= ~(0x80000000 >> __CGR_SHIFT(num));
+}
+static inline int qman_cgrs_next(struct qman_cgrs *c, int num)
+{
+ while ((++num < __CGR_NUM) && !qman_cgrs_get(c, num))
+ ;
+ return num;
+}
+static inline void qman_cgrs_cp(struct qman_cgrs *dest,
+ const struct qman_cgrs *src)
+{
+ *dest = *src;
+}
+static inline void qman_cgrs_and(struct qman_cgrs *dest,
+ const struct qman_cgrs *a, const struct qman_cgrs *b)
+{
+ int ret;
+ u32 *_d = dest->q.__state;
+ const u32 *_a = a->q.__state;
+ const u32 *_b = b->q.__state;
+ for (ret = 0; ret < 8; ret++)
+ *(_d++) = *(_a++) & *(_b++);
+}
+static inline void qman_cgrs_xor(struct qman_cgrs *dest,
+ const struct qman_cgrs *a, const struct qman_cgrs *b)
+{
+ int ret;
+ u32 *_d = dest->q.__state;
+ const u32 *_a = a->q.__state;
+ const u32 *_b = b->q.__state;
+ for (ret = 0; ret < 8; ret++)
+ *(_d++) = *(_a++) ^ *(_b++);
+}
+
+/* used by CCSR and portal interrupt code */
+enum qm_isr_reg {
+ qm_isr_status = 0,
+ qm_isr_enable = 1,
+ qm_isr_disable = 2,
+ qm_isr_inhibit = 3
+};
+
+struct qm_portal_config {
+ /* Corenet portal addresses;
+ * [0]==cache-enabled, [1]==cache-inhibited. */
+ __iomem void *addr_virt[2];
+ struct resource addr_phys[2];
+ struct device dev;
+ struct iommu_domain *iommu_domain;
+ /* Allow these to be joined in lists */
+ struct list_head list;
+ /* User-visible portal configuration settings */
+ struct qman_portal_config public_cfg;
+};
+
+/* Revision info (for errata and feature handling) */
+#define QMAN_REV11 0x0101
+#define QMAN_REV12 0x0102
+#define QMAN_REV20 0x0200
+#define QMAN_REV30 0x0300
+#define QMAN_REV31 0x0301
+extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */
+
+#ifdef CONFIG_FSL_QMAN_CONFIG
+/* Hooks from qman_driver.c to qman_config.c */
+int qman_init_ccsr(struct device_node *node);
+void qman_liodn_fixup(u16 channel);
+int qman_set_sdest(u16 channel, unsigned int cpu_idx);
+#endif
+
+int qm_set_wpm(int wpm);
+int qm_get_wpm(int *wpm);
+
+/* Hooks from qman_driver.c in to qman_high.c */
+struct qman_portal *qman_create_portal(
+ struct qman_portal *portal,
+ const struct qm_portal_config *config,
+ const struct qman_cgrs *cgrs);
+
+struct qman_portal *qman_create_affine_portal(
+ const struct qm_portal_config *config,
+ const struct qman_cgrs *cgrs);
+struct qman_portal *qman_create_affine_slave(struct qman_portal *redirect,
+ int cpu);
+const struct qm_portal_config *qman_destroy_affine_portal(void);
+void qman_destroy_portal(struct qman_portal *qm);
+
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+/* If the fq object pointer is greater than the size of context_b field,
+ * than a lookup table is required. */
+int qman_setup_fq_lookup_table(size_t num_entries);
+#endif
+
+
+/*************************************************/
+/* QMan s/w corenet portal, low-level i/face */
+/*************************************************/
+
+/* Note: most functions are only used by the high-level interface, so are
+ * inlined from qman.h. The stuff below is for use by other parts of the
+ * driver. */
+
+/* For qm_dqrr_sdqcr_set(); Choose one SOURCE. Choose one COUNT. Choose one
+ * dequeue TYPE. Choose TOKEN (8-bit).
+ * If SOURCE == CHANNELS,
+ * Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n).
+ * You can choose DEDICATED_PRECEDENCE if the portal channel should have
+ * priority.
+ * If SOURCE == SPECIFICWQ,
+ * Either select the work-queue ID with SPECIFICWQ_WQ(), or select the
+ * channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the
+ * work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the
+ * same value.
+ */
+#define QM_SDQCR_SOURCE_CHANNELS 0x0
+#define QM_SDQCR_SOURCE_SPECIFICWQ 0x40000000
+#define QM_SDQCR_COUNT_EXACT1 0x0
+#define QM_SDQCR_COUNT_UPTO3 0x20000000
+#define QM_SDQCR_DEDICATED_PRECEDENCE 0x10000000
+#define QM_SDQCR_TYPE_MASK 0x03000000
+#define QM_SDQCR_TYPE_NULL 0x0
+#define QM_SDQCR_TYPE_PRIO_QOS 0x01000000
+#define QM_SDQCR_TYPE_ACTIVE_QOS 0x02000000
+#define QM_SDQCR_TYPE_ACTIVE 0x03000000
+#define QM_SDQCR_TOKEN_MASK 0x00ff0000
+#define QM_SDQCR_TOKEN_SET(v) (((v) & 0xff) << 16)
+#define QM_SDQCR_TOKEN_GET(v) (((v) >> 16) & 0xff)
+#define QM_SDQCR_CHANNELS_DEDICATED 0x00008000
+#define QM_SDQCR_SPECIFICWQ_MASK 0x000000f7
+#define QM_SDQCR_SPECIFICWQ_DEDICATED 0x00000000
+#define QM_SDQCR_SPECIFICWQ_POOL(n) ((n) << 4)
+#define QM_SDQCR_SPECIFICWQ_WQ(n) (n)
+
+/* For qm_dqrr_vdqcr_set(): use FQID(n) to fill in the frame queue ID */
+#define QM_VDQCR_FQID_MASK 0x00ffffff
+#define QM_VDQCR_FQID(n) ((n) & QM_VDQCR_FQID_MASK)
+
+/* For qm_dqrr_pdqcr_set(); Choose one MODE. Choose one COUNT.
+ * If MODE==SCHEDULED
+ * Choose SCHEDULED_CHANNELS or SCHEDULED_SPECIFICWQ. Choose one dequeue TYPE.
+ * If CHANNELS,
+ * Choose CHANNELS_DEDICATED and/or CHANNELS_POOL() channels.
+ * You can choose DEDICATED_PRECEDENCE if the portal channel should have
+ * priority.
+ * If SPECIFICWQ,
+ * Either select the work-queue ID with SPECIFICWQ_WQ(), or select the
+ * channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the
+ * work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the
+ * same value.
+ * If MODE==UNSCHEDULED
+ * Choose FQID().
+ */
+#define QM_PDQCR_MODE_SCHEDULED 0x0
+#define QM_PDQCR_MODE_UNSCHEDULED 0x80000000
+#define QM_PDQCR_SCHEDULED_CHANNELS 0x0
+#define QM_PDQCR_SCHEDULED_SPECIFICWQ 0x40000000
+#define QM_PDQCR_COUNT_EXACT1 0x0
+#define QM_PDQCR_COUNT_UPTO3 0x20000000
+#define QM_PDQCR_DEDICATED_PRECEDENCE 0x10000000
+#define QM_PDQCR_TYPE_MASK 0x03000000
+#define QM_PDQCR_TYPE_NULL 0x0
+#define QM_PDQCR_TYPE_PRIO_QOS 0x01000000
+#define QM_PDQCR_TYPE_ACTIVE_QOS 0x02000000
+#define QM_PDQCR_TYPE_ACTIVE 0x03000000
+#define QM_PDQCR_CHANNELS_DEDICATED 0x00008000
+#define QM_PDQCR_CHANNELS_POOL(n) (0x00008000 >> (n))
+#define QM_PDQCR_SPECIFICWQ_MASK 0x000000f7
+#define QM_PDQCR_SPECIFICWQ_DEDICATED 0x00000000
+#define QM_PDQCR_SPECIFICWQ_POOL(n) ((n) << 4)
+#define QM_PDQCR_SPECIFICWQ_WQ(n) (n)
+#define QM_PDQCR_FQID(n) ((n) & 0xffffff)
+
+/* Used by all portal interrupt registers except 'inhibit'
+ * Channels with frame availability
+ */
+#define QM_PIRQ_DQAVAIL 0x0000ffff
+
+/* The DQAVAIL interrupt fields break down into these bits; */
+#define QM_DQAVAIL_PORTAL 0x8000 /* Portal channel */
+#define QM_DQAVAIL_POOL(n) (0x8000 >> (n)) /* Pool channel, n==[1..15] */
+#define QM_DQAVAIL_MASK 0xffff
+/* This mask contains all the "irqsource" bits visible to API users */
+#define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI)
+
+/* These are qm_<reg>_<verb>(). So for example, qm_disable_write() means "write
+ * the disable register" rather than "disable the ability to write". */
+#define qm_isr_status_read(qm) __qm_isr_read(qm, qm_isr_status)
+#define qm_isr_status_clear(qm, m) __qm_isr_write(qm, qm_isr_status, m)
+#define qm_isr_enable_read(qm) __qm_isr_read(qm, qm_isr_enable)
+#define qm_isr_enable_write(qm, v) __qm_isr_write(qm, qm_isr_enable, v)
+#define qm_isr_disable_read(qm) __qm_isr_read(qm, qm_isr_disable)
+#define qm_isr_disable_write(qm, v) __qm_isr_write(qm, qm_isr_disable, v)
+/* TODO: unfortunate name-clash here, reword? */
+#define qm_isr_inhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 1)
+#define qm_isr_uninhibit(qm) __qm_isr_write(qm, qm_isr_inhibit, 0)
+
+#ifdef CONFIG_FSL_QMAN_CONFIG
+int qman_have_ccsr(void);
+#else
+#define qman_have_ccsr 0
+#endif
+
+__init int qman_init(void);
+
+extern void *affine_portals[NR_CPUS];
+const struct qm_portal_config *qman_get_qm_portal_config(
+ struct qman_portal *portal);
diff --git a/drivers/soc/freescale/qman_utils.c b/drivers/soc/freescale/qman_utils.c
new file mode 100644
index 0000000..356d497
--- /dev/null
+++ b/drivers/soc/freescale/qman_utils.c
@@ -0,0 +1,129 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qman_priv.h"
+
+/* ----------------- */
+/* --- FQID Pool --- */
+
+struct qman_fqid_pool {
+ /* Base and size of the FQID range */
+ u32 fqid_base;
+ u32 total;
+ /* Number of FQIDs currently "allocated" */
+ u32 used;
+ /* Allocation optimisation. When 'used<total', it is the index of an
+ * available FQID. Otherwise there are no available FQIDs, and this
+ * will be set when the next deallocation occurs. */
+ u32 next;
+ /* A bit-field representation of the FQID range. */
+ unsigned long *bits;
+};
+
+#define QLONG_BYTES sizeof(unsigned long)
+#define QLONG_BITS (QLONG_BYTES * 8)
+/* Number of 'longs' required for the given number of bits */
+#define QNUM_LONGS(b) (((b) + QLONG_BITS - 1) / QLONG_BITS)
+/* Shorthand for the number of bytes of same (kmalloc, memset, etc) */
+#define QNUM_BYTES(b) (QNUM_LONGS(b) * QLONG_BYTES)
+/* And in bits */
+#define QNUM_BITS(b) (QNUM_LONGS(b) * QLONG_BITS)
+
+struct qman_fqid_pool *qman_fqid_pool_create(u32 fqid_start, u32 num)
+{
+ struct qman_fqid_pool *pool = kmalloc(sizeof(*pool), GFP_KERNEL);
+ unsigned int i;
+
+ BUG_ON(!num);
+ if (!pool)
+ return NULL;
+ pool->fqid_base = fqid_start;
+ pool->total = num;
+ pool->used = 0;
+ pool->next = 0;
+ pool->bits = kzalloc(QNUM_BYTES(num), GFP_KERNEL);
+ if (!pool->bits) {
+ kfree(pool);
+ return NULL;
+ }
+ /* If num is not an even multiple of QLONG_BITS (or even 8, for
+ * byte-oriented searching) then we fill the trailing bits with 1, to
+ * make them look allocated (permanently). */
+ for (i = num + 1; i < QNUM_BITS(num); i++)
+ set_bit(i, pool->bits);
+ return pool;
+}
+EXPORT_SYMBOL(qman_fqid_pool_create);
+
+int qman_fqid_pool_destroy(struct qman_fqid_pool *pool)
+{
+ int ret = pool->used;
+ kfree(pool->bits);
+ kfree(pool);
+ return ret;
+}
+EXPORT_SYMBOL(qman_fqid_pool_destroy);
+
+int qman_fqid_pool_alloc(struct qman_fqid_pool *pool, u32 *fqid)
+{
+ int ret;
+ if (pool->used == pool->total)
+ return -ENOMEM;
+ *fqid = pool->fqid_base + pool->next;
+ ret = test_and_set_bit(pool->next, pool->bits);
+ BUG_ON(ret);
+ if (++pool->used == pool->total)
+ return 0;
+ pool->next = find_next_zero_bit(pool->bits, pool->total, pool->next);
+ if (pool->next >= pool->total)
+ pool->next = find_first_zero_bit(pool->bits, pool->total);
+ BUG_ON(pool->next >= pool->total);
+ return 0;
+}
+EXPORT_SYMBOL(qman_fqid_pool_alloc);
+
+void qman_fqid_pool_free(struct qman_fqid_pool *pool, u32 fqid)
+{
+ int ret;
+
+ fqid -= pool->fqid_base;
+ ret = test_and_clear_bit(fqid, pool->bits);
+ BUG_ON(!ret);
+ if (pool->used-- == pool->total)
+ pool->next = fqid;
+}
+EXPORT_SYMBOL(qman_fqid_pool_free);
+
+u32 qman_fqid_pool_used(struct qman_fqid_pool *pool)
+{
+ return pool->used;
+}
+EXPORT_SYMBOL(qman_fqid_pool_used);
diff --git a/include/linux/fsl_bman.h b/include/linux/fsl_bman.h
index d9a0dc9..16845d3 100644
--- a/include/linux/fsl_bman.h
+++ b/include/linux/fsl_bman.h
@@ -323,9 +323,9 @@ const cpumask_t *bman_affine_cpus(void);
* NB, unlike the legacy wrapper bman_poll(), this function will
* deterministically check for the presence of portal processing work and do it,
* which implies some latency even if there's nothing to do. The bman_poll()
- * wrapper on the other hand attenuates this by
+ * wrapper on the other hand (like the qman_poll() wrapper) attenuates this by
* checking for (and doing) portal processing infrequently. Ie. such that
- * bman_poll() can be called from core-processing loops. Use
+ * qman_poll() and bman_poll() can be called from core-processing loops. Use
* bman_poll_slow() when you yourself are deciding when to incur the overhead of
* processing.
*/
diff --git a/include/linux/fsl_qman.h b/include/linux/fsl_qman.h
new file mode 100644
index 0000000..c12cbd3
--- /dev/null
+++ b/include/linux/fsl_qman.h
@@ -0,0 +1,1949 @@
+/* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef FSL_QMAN_H
+#define FSL_QMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Last updated for v00.800 of the BG */
+
+/* Hardware constants */
+#define QM_CHANNEL_SWPORTAL0 0
+#define QMAN_CHANNEL_POOL1 0x21
+#define QMAN_CHANNEL_CAAM 0x80
+#define QMAN_CHANNEL_PME 0xa0
+#define QMAN_CHANNEL_POOL1_REV3 0x401
+#define QMAN_CHANNEL_CAAM_REV3 0x840
+#define QMAN_CHANNEL_PME_REV3 0x860
+#define QMAN_CHANNEL_DCE 0x8a0
+extern u16 qm_channel_pool1;
+extern u16 qm_channel_caam;
+extern u16 qm_channel_pme;
+extern u16 qm_channel_dce;
+enum qm_dc_portal {
+ qm_dc_portal_fman0 = 0,
+ qm_dc_portal_fman1 = 1,
+ qm_dc_portal_caam = 2,
+ qm_dc_portal_pme = 3,
+ qm_dc_portal_rman = 4,
+ qm_dc_portal_dce = 5
+};
+
+/* Portal processing (interrupt) sources */
+#define QM_PIRQ_CSCI 0x00100000 /* Congestion State Change */
+#define QM_PIRQ_EQCI 0x00080000 /* Enqueue Command Committed */
+#define QM_PIRQ_EQRI 0x00040000 /* EQCR Ring (below threshold) */
+#define QM_PIRQ_DQRI 0x00020000 /* DQRR Ring (non-empty) */
+#define QM_PIRQ_MRI 0x00010000 /* MR Ring (non-empty) */
+/* This mask contains all the interrupt sources that need handling except DQRI,
+ * ie. that if present should trigger slow-path processing. */
+#define QM_PIRQ_SLOW (QM_PIRQ_CSCI | QM_PIRQ_EQCI | QM_PIRQ_EQRI | \
+ QM_PIRQ_MRI)
+
+/* --- Clock speed --- */
+/* A qman driver instance may or may not know the current qman clock speed.
+ * However, certain CEETM calculations may not be possible if this is not known.
+ * The 'set' function will only succeed (return zero) if the driver did not
+ * already know the clock speed. Likewise, the 'get' function will only succeed
+ * if the driver does know the clock speed (either because it knew when booting,
+ * or was told via 'set'). In cases where software is running on a driver
+ * instance that does not know the clock speed (eg. on a hypervised data-plane),
+ * and the user can obtain the current qman clock speed by other means (eg. from
+ * a message sent from the control-plane), then the 'set' function can be used
+ * to enable rate-calculations in a driver where it would otherwise not be
+ * possible. */
+int qm_get_clock(u64 *clock_hz);
+int qm_set_clock(u64 clock_hz);
+
+/* For qman_static_dequeue_*** APIs */
+#define QM_SDQCR_CHANNELS_POOL_MASK 0x00007fff
+/* for n in [1,15] */
+#define QM_SDQCR_CHANNELS_POOL(n) (0x00008000 >> (n))
+/* for conversion from n of qm_channel */
+static inline u32 QM_SDQCR_CHANNELS_POOL_CONV(u16 channel)
+{
+ return QM_SDQCR_CHANNELS_POOL(channel + 1 - qm_channel_pool1);
+}
+
+/* For qman_volatile_dequeue(); Choose one PRECEDENCE. EXACT is optional. Use
+ * NUMFRAMES(n) (6-bit) or NUMFRAMES_TILLEMPTY to fill in the frame-count. Use
+ * FQID(n) to fill in the frame queue ID. */
+#define QM_VDQCR_PRECEDENCE_VDQCR 0x0
+#define QM_VDQCR_PRECEDENCE_SDQCR 0x80000000
+#define QM_VDQCR_EXACT 0x40000000
+#define QM_VDQCR_NUMFRAMES_MASK 0x3f000000
+#define QM_VDQCR_NUMFRAMES_SET(n) (((n) & 0x3f) << 24)
+#define QM_VDQCR_NUMFRAMES_GET(n) (((n) >> 24) & 0x3f)
+#define QM_VDQCR_NUMFRAMES_TILLEMPTY QM_VDQCR_NUMFRAMES_SET(0)
+
+
+/* ------------------------------------------------------- */
+/* --- Qman data structures (and associated constants) --- */
+
+/* Represents s/w corenet portal mapped data structures */
+struct qm_eqcr_entry; /* EQCR (EnQueue Command Ring) entries */
+struct qm_dqrr_entry; /* DQRR (DeQueue Response Ring) entries */
+struct qm_mr_entry; /* MR (Message Ring) entries */
+struct qm_mc_command; /* MC (Management Command) command */
+struct qm_mc_result; /* MC result */
+
+/* See David Lapp's "Frame formats" document, "dpateam", Jan 07, 2008 */
+#define QM_FD_FORMAT_SG 0x4
+#define QM_FD_FORMAT_LONG 0x2
+#define QM_FD_FORMAT_COMPOUND 0x1
+enum qm_fd_format {
+ /* 'contig' implies a contiguous buffer, whereas 'sg' implies a
+ * scatter-gather table. 'big' implies a 29-bit length with no offset
+ * field, otherwise length is 20-bit and offset is 9-bit. 'compound'
+ * implies a s/g-like table, where each entry itself represents a frame
+ * (contiguous or scatter-gather) and the 29-bit "length" is
+ * interpreted purely for congestion calculations, ie. a "congestion
+ * weight". */
+ qm_fd_contig = 0,
+ qm_fd_contig_big = QM_FD_FORMAT_LONG,
+ qm_fd_sg = QM_FD_FORMAT_SG,
+ qm_fd_sg_big = QM_FD_FORMAT_SG | QM_FD_FORMAT_LONG,
+ qm_fd_compound = QM_FD_FORMAT_COMPOUND
+};
+
+/* Capitalised versions are un-typed but can be used in static expressions */
+#define QM_FD_CONTIG 0
+#define QM_FD_CONTIG_BIG QM_FD_FORMAT_LONG
+#define QM_FD_SG QM_FD_FORMAT_SG
+#define QM_FD_SG_BIG (QM_FD_FORMAT_SG | QM_FD_FORMAT_LONG)
+#define QM_FD_COMPOUND QM_FD_FORMAT_COMPOUND
+
+/* See 1.5.1.1: "Frame Descriptor (FD)" */
+struct qm_fd {
+ union {
+ struct {
+ u8 dd:2; /* dynamic debug */
+ u8 liodn_offset:6;
+ u8 bpid:8; /* Buffer Pool ID */
+ u8 eliodn_offset:4;
+ u8 __reserved:4;
+ u8 addr_hi; /* high 8-bits of 40-bit address */
+ u32 addr_lo; /* low 32-bits of 40-bit address */
+ };
+ struct {
+ u64 __notaddress:24;
+ /* More efficient address accessor */
+ u64 addr:40;
+ };
+ u64 opaque_addr;
+ };
+ /* The 'format' field indicates the interpretation of the remaining 29
+ * bits of the 32-bit word. For packing reasons, it is duplicated in the
+ * other union elements. Note, union'd structs are difficult to use with
+ * static initialisation under gcc, in which case use the "opaque" form
+ * with one of the macros. */
+ union {
+ /* For easier/faster copying of this part of the fd (eg. from a
+ * DQRR entry to an EQCR entry) copy 'opaque' */
+ u32 opaque;
+ /* If 'format' is _contig or _sg, 20b length and 9b offset */
+ struct {
+ enum qm_fd_format format:3;
+ u16 offset:9;
+ u32 length20:20;
+ };
+ /* If 'format' is _contig_big or _sg_big, 29b length */
+ struct {
+ enum qm_fd_format _format1:3;
+ u32 length29:29;
+ };
+ /* If 'format' is _compound, 29b "congestion weight" */
+ struct {
+ enum qm_fd_format _format2:3;
+ u32 cong_weight:29;
+ };
+ };
+ union {
+ u32 cmd;
+ u32 status;
+ };
+} __aligned(8);
+#define QM_FD_DD_NULL 0x00
+#define QM_FD_PID_MASK 0x3f
+static inline u64 qm_fd_addr_get64(const struct qm_fd *fd)
+{
+ return fd->addr;
+}
+
+static inline dma_addr_t qm_fd_addr(const struct qm_fd *fd)
+{
+ return (dma_addr_t)fd->addr;
+}
+/* Macro, so we compile better if 'v' isn't always 64-bit */
+#define qm_fd_addr_set64(fd, v) \
+ do { \
+ struct qm_fd *__fd931 = (fd); \
+ __fd931->addr = v; \
+ } while (0)
+
+/* For static initialisation of FDs (which is complicated by the use of unions
+ * in "struct qm_fd"), use the following macros. Note that;
+ * - 'dd', 'pid' and 'bpid' are ignored because there's no static initialisation
+ * use-case),
+ * - use capitalised QM_FD_*** formats for static initialisation.
+ */
+#define QM_FD_FMT_20(cmd, addr_hi, addr_lo, fmt, off, len) \
+ { 0, 0, 0, 0, 0, addr_hi, addr_lo, \
+ { (((fmt)&0x7) << 29) | (((off)&0x1ff) << 20) | ((len)&0xfffff) }, \
+ { cmd } }
+#define QM_FD_FMT_29(cmd, addr_hi, addr_lo, fmt, len) \
+ { 0, 0, 0, 0, 0, addr_hi, addr_lo, \
+ { (((fmt)&0x7) << 29) | ((len)&0x1fffffff) }, \
+ { cmd } }
+
+/* See 2.2.1.3 Multi-Core Datapath Acceleration Architecture */
+struct qm_sg_entry {
+ union {
+ struct {
+ u8 __reserved1[3];
+ u8 addr_hi; /* high 8-bits of 40-bit address */
+ u32 addr_lo; /* low 32-bits of 40-bit address */
+ };
+ struct {
+ u64 __notaddress:24;
+ u64 addr:40;
+ };
+ };
+ u32 extension:1; /* Extension bit */
+ u32 final:1; /* Final bit */
+ u32 length:30;
+ u8 __reserved2;
+ u8 bpid;
+ u16 __reserved3:3;
+ u16 offset:13;
+} __packed;
+static inline u64 qm_sg_entry_get64(const struct qm_sg_entry *sg)
+{
+ return sg->addr;
+}
+static inline dma_addr_t qm_sg_addr(const struct qm_sg_entry *sg)
+{
+ return (dma_addr_t)sg->addr;
+}
+/* Macro, so we compile better if 'v' isn't always 64-bit */
+#define qm_sg_entry_set64(sg, v) \
+ do { \
+ struct qm_sg_entry *__sg931 = (sg); \
+ __sg931->addr = v; \
+ } while (0)
+
+/* See 1.5.8.1: "Enqueue Command" */
+struct qm_eqcr_entry {
+ u8 __dont_write_directly__verb;
+ u8 dca;
+ u16 seqnum;
+ u32 orp; /* 24-bit */
+ u32 fqid; /* 24-bit */
+ u32 tag;
+ struct qm_fd fd;
+ u8 __reserved3[32];
+} __packed;
+#define QM_EQCR_VERB_VBIT 0x80
+#define QM_EQCR_VERB_CMD_MASK 0x61 /* but only one value; */
+#define QM_EQCR_VERB_CMD_ENQUEUE 0x01
+#define QM_EQCR_VERB_COLOUR_MASK 0x18 /* 4 possible values; */
+#define QM_EQCR_VERB_COLOUR_GREEN 0x00
+#define QM_EQCR_VERB_COLOUR_YELLOW 0x08
+#define QM_EQCR_VERB_COLOUR_RED 0x10
+#define QM_EQCR_VERB_COLOUR_OVERRIDE 0x18
+#define QM_EQCR_VERB_INTERRUPT 0x04 /* on command consumption */
+#define QM_EQCR_VERB_ORP 0x02 /* enable order restoration */
+#define QM_EQCR_DCA_ENABLE 0x80
+#define QM_EQCR_DCA_PARK 0x40
+#define QM_EQCR_DCA_IDXMASK 0x0f /* "DQRR::idx" goes here */
+#define QM_EQCR_SEQNUM_NESN 0x8000 /* Advance NESN */
+#define QM_EQCR_SEQNUM_NLIS 0x4000 /* More fragments to come */
+#define QM_EQCR_SEQNUM_SEQMASK 0x3fff /* sequence number goes here */
+#define QM_EQCR_FQID_NULL 0 /* eg. for an ORP seqnum hole */
+
+/* See 1.5.8.2: "Frame Dequeue Response" */
+struct qm_dqrr_entry {
+ u8 verb;
+ u8 stat;
+ u16 seqnum; /* 15-bit */
+ u8 tok;
+ u8 __reserved2[3];
+ u32 fqid; /* 24-bit */
+ u32 contextB;
+ struct qm_fd fd;
+ u8 __reserved4[32];
+};
+#define QM_DQRR_VERB_VBIT 0x80
+#define QM_DQRR_VERB_MASK 0x7f /* where the verb contains; */
+#define QM_DQRR_VERB_FRAME_DEQUEUE 0x60 /* "this format" */
+#define QM_DQRR_STAT_FQ_EMPTY 0x80 /* FQ empty */
+#define QM_DQRR_STAT_FQ_HELDACTIVE 0x40 /* FQ held active */
+#define QM_DQRR_STAT_FQ_FORCEELIGIBLE 0x20 /* FQ was force-eligible'd */
+#define QM_DQRR_STAT_FD_VALID 0x10 /* has a non-NULL FD */
+#define QM_DQRR_STAT_UNSCHEDULED 0x02 /* Unscheduled dequeue */
+#define QM_DQRR_STAT_DQCR_EXPIRED 0x01 /* VDQCR or PDQCR expired*/
+
+/* See 1.5.8.3: "ERN Message Response" */
+/* See 1.5.8.4: "FQ State Change Notification" */
+struct qm_mr_entry {
+ u8 verb;
+ union {
+ struct {
+ u8 dca;
+ u16 seqnum;
+ u8 rc; /* Rejection Code */
+ u32 orp:24;
+ u32 fqid; /* 24-bit */
+ u32 tag;
+ struct qm_fd fd;
+ } __packed ern;
+ struct {
+ u8 colour:2; /* See QM_MR_DCERN_COLOUR_* */
+ u8 __reserved1:3;
+ enum qm_dc_portal portal:3;
+ u16 __reserved2;
+ u8 rc; /* Rejection Code */
+ u32 __reserved3:24;
+ u32 fqid; /* 24-bit */
+ u32 tag;
+ struct qm_fd fd;
+ } __packed dcern;
+ struct {
+ u8 fqs; /* Frame Queue Status */
+ u8 __reserved1[6];
+ u32 fqid; /* 24-bit */
+ u32 contextB;
+ u8 __reserved2[16];
+ } __packed fq; /* FQRN/FQRNI/FQRL/FQPN */
+ };
+ u8 __reserved2[32];
+} __packed;
+#define QM_MR_VERB_VBIT 0x80
+/* The "ern" VERB bits match QM_EQCR_VERB_*** so aren't reproduced here. ERNs
+ * originating from direct-connect portals ("dcern") use 0x20 as a verb which
+ * would be invalid as a s/w enqueue verb. A s/w ERN can be distinguished from
+ * the other MR types by noting if the 0x20 bit is unset. */
+#define QM_MR_VERB_TYPE_MASK 0x27
+#define QM_MR_VERB_DC_ERN 0x20
+#define QM_MR_VERB_FQRN 0x21
+#define QM_MR_VERB_FQRNI 0x22
+#define QM_MR_VERB_FQRL 0x23
+#define QM_MR_VERB_FQPN 0x24
+#define QM_MR_RC_MASK 0xf0 /* contains one of; */
+#define QM_MR_RC_CGR_TAILDROP 0x00
+#define QM_MR_RC_WRED 0x10
+#define QM_MR_RC_ERROR 0x20
+#define QM_MR_RC_ORPWINDOW_EARLY 0x30
+#define QM_MR_RC_ORPWINDOW_LATE 0x40
+#define QM_MR_RC_FQ_TAILDROP 0x50
+#define QM_MR_RC_ORPWINDOW_RETIRED 0x60
+#define QM_MR_RC_ORP_ZERO 0x70
+#define QM_MR_FQS_ORLPRESENT 0x02 /* ORL fragments to come */
+#define QM_MR_FQS_NOTEMPTY 0x01 /* FQ has enqueued frames */
+#define QM_MR_DCERN_COLOUR_GREEN 0x00
+#define QM_MR_DCERN_COLOUR_YELLOW 0x01
+#define QM_MR_DCERN_COLOUR_RED 0x02
+#define QM_MR_DCERN_COLOUR_OVERRIDE 0x03
+
+/* An identical structure of FQD fields is present in the "Init FQ" command and
+ * the "Query FQ" result, it's suctioned out into the "struct qm_fqd" type.
+ * Within that, the 'stashing' and 'taildrop' pieces are also factored out, the
+ * latter has two inlines to assist with converting to/from the mant+exp
+ * representation. */
+struct qm_fqd_stashing {
+ /* See QM_STASHING_EXCL_<...> */
+ u8 exclusive;
+ u8 __reserved1:2;
+ /* Numbers of cachelines */
+ u8 annotation_cl:2;
+ u8 data_cl:2;
+ u8 context_cl:2;
+} __packed;
+struct qm_fqd_taildrop {
+ u16 __reserved1:3;
+ u16 mant:8;
+ u16 exp:5;
+} __packed;
+struct qm_fqd_oac {
+ /* See QM_OAC_<...> */
+ u8 oac:2; /* "Overhead Accounting Control" */
+ u8 __reserved1:6;
+ /* Two's-complement value (-128 to +127) */
+ signed char oal; /* "Overhead Accounting Length" */
+} __packed;
+struct qm_fqd {
+ union {
+ u8 orpc;
+ struct {
+ u8 __reserved1:2;
+ u8 orprws:3;
+ u8 oa:1;
+ u8 olws:2;
+ } __packed;
+ };
+ u8 cgid;
+ u16 fq_ctrl; /* See QM_FQCTRL_<...> */
+ union {
+ u16 dest_wq;
+ struct {
+ u16 channel:13; /* qm_channel */
+ u16 wq:3;
+ } __packed dest;
+ };
+ u16 __reserved2:1;
+ u16 ics_cred:15;
+ /* For "Initialize Frame Queue" commands, the write-enable mask
+ * determines whether 'td' or 'oac_init' is observed. For query
+ * commands, this field is always 'td', and 'oac_query' (below) reflects
+ * the Overhead ACcounting values. */
+ union {
+ struct qm_fqd_taildrop td;
+ struct qm_fqd_oac oac_init;
+ };
+ u32 context_b;
+ union {
+ /* Treat it as 64-bit opaque */
+ u64 opaque;
+ struct {
+ u32 hi;
+ u32 lo;
+ };
+ /* Treat it as s/w portal stashing config */
+ /* See 1.5.6.7.1: "FQD Context_A field used for [...] */
+ struct {
+ struct qm_fqd_stashing stashing;
+ /* 48-bit address of FQ context to
+ * stash, must be cacheline-aligned */
+ u16 context_hi;
+ u32 context_lo;
+ } __packed;
+ } context_a;
+ struct qm_fqd_oac oac_query;
+} __packed;
+/* 64-bit converters for context_hi/lo */
+static inline u64 qm_fqd_stashing_get64(const struct qm_fqd *fqd)
+{
+ return ((u64)fqd->context_a.context_hi << 32) |
+ (u64)fqd->context_a.context_lo;
+}
+static inline dma_addr_t qm_fqd_stashing_addr(const struct qm_fqd *fqd)
+{
+ return (dma_addr_t)qm_fqd_stashing_get64(fqd);
+}
+static inline u64 qm_fqd_context_a_get64(const struct qm_fqd *fqd)
+{
+ return ((u64)fqd->context_a.hi << 32) |
+ (u64)fqd->context_a.lo;
+}
+/* Macro, so we compile better when 'v' isn't necessarily 64-bit */
+#define qm_fqd_stashing_set64(fqd, v) \
+ do { \
+ struct qm_fqd *__fqd931 = (fqd); \
+ __fqd931->context_a.context_hi = upper_32_bits(v); \
+ __fqd931->context_a.context_lo = lower_32_bits(v); \
+ } while (0)
+#define qm_fqd_context_a_set64(fqd, v) \
+ do { \
+ struct qm_fqd *__fqd931 = (fqd); \
+ __fqd931->context_a.hi = upper_32_bits(v); \
+ __fqd931->context_a.lo = lower_32_bits(v); \
+ } while (0)
+/* convert a threshold value into mant+exp representation */
+static inline int qm_fqd_taildrop_set(struct qm_fqd_taildrop *td, u32 val,
+ int roundup)
+{
+ u32 e = 0;
+ int oddbit = 0;
+ if (val > 0xe0000000)
+ return -ERANGE;
+ while (val > 0xff) {
+ oddbit = val & 1;
+ val >>= 1;
+ e++;
+ if (roundup && oddbit)
+ val++;
+ }
+ td->exp = e;
+ td->mant = val;
+ return 0;
+}
+/* and the other direction */
+static inline u32 qm_fqd_taildrop_get(const struct qm_fqd_taildrop *td)
+{
+ return (u32)td->mant << td->exp;
+}
+
+/* See 1.5.2.2: "Frame Queue Descriptor (FQD)" */
+/* Frame Queue Descriptor (FQD) field 'fq_ctrl' uses these constants */
+#define QM_FQCTRL_MASK 0x07ff /* 'fq_ctrl' flags; */
+#define QM_FQCTRL_CGE 0x0400 /* Congestion Group Enable */
+#define QM_FQCTRL_TDE 0x0200 /* Tail-Drop Enable */
+#define QM_FQCTRL_ORP 0x0100 /* ORP Enable */
+#define QM_FQCTRL_CTXASTASHING 0x0080 /* Context-A stashing */
+#define QM_FQCTRL_CPCSTASH 0x0040 /* CPC Stash Enable */
+#define QM_FQCTRL_FORCESFDR 0x0008 /* High-priority SFDRs */
+#define QM_FQCTRL_AVOIDBLOCK 0x0004 /* Don't block active */
+#define QM_FQCTRL_HOLDACTIVE 0x0002 /* Hold active in portal */
+#define QM_FQCTRL_PREFERINCACHE 0x0001 /* Aggressively cache FQD */
+#define QM_FQCTRL_LOCKINCACHE QM_FQCTRL_PREFERINCACHE /* older naming */
+
+/* See 1.5.6.7.1: "FQD Context_A field used for [...] */
+/* Frame Queue Descriptor (FQD) field 'CONTEXT_A' uses these constants */
+#define QM_STASHING_EXCL_ANNOTATION 0x04
+#define QM_STASHING_EXCL_DATA 0x02
+#define QM_STASHING_EXCL_CTX 0x01
+
+/* See 1.5.5.3: "Intra Class Scheduling" */
+/* FQD field 'OAC' (Overhead ACcounting) uses these constants */
+#define QM_OAC_ICS 0x2 /* Accounting for Intra-Class Scheduling */
+#define QM_OAC_CG 0x1 /* Accounting for Congestion Groups */
+
+/* See 1.5.8.4: "FQ State Change Notification" */
+/* This struct represents the 32-bit "WR_PARM_[GYR]" parameters in CGR fields
+ * and associated commands/responses. The WRED parameters are calculated from
+ * these fields as follows;
+ * MaxTH = MA * (2 ^ Mn)
+ * Slope = SA / (2 ^ Sn)
+ * MaxP = 4 * (Pn + 1)
+ */
+struct qm_cgr_wr_parm {
+ union {
+ u32 word;
+ struct {
+ u32 MA:8;
+ u32 Mn:5;
+ u32 SA:7; /* must be between 64-127 */
+ u32 Sn:6;
+ u32 Pn:6;
+ } __packed;
+ };
+} __packed;
+/* This struct represents the 13-bit "CS_THRES" CGR field. In the corresponding
+ * management commands, this is padded to a 16-bit structure field, so that's
+ * how we represent it here. The congestion state threshold is calculated from
+ * these fields as follows;
+ * CS threshold = TA * (2 ^ Tn)
+ */
+struct qm_cgr_cs_thres {
+ u16 __reserved:3;
+ u16 TA:8;
+ u16 Tn:5;
+} __packed;
+/* This identical structure of CGR fields is present in the "Init/Modify CGR"
+ * commands and the "Query CGR" result. It's suctioned out here into its own
+ * struct. */
+struct __qm_mc_cgr {
+ struct qm_cgr_wr_parm wr_parm_g;
+ struct qm_cgr_wr_parm wr_parm_y;
+ struct qm_cgr_wr_parm wr_parm_r;
+ u8 wr_en_g; /* boolean, use QM_CGR_EN */
+ u8 wr_en_y; /* boolean, use QM_CGR_EN */
+ u8 wr_en_r; /* boolean, use QM_CGR_EN */
+ u8 cscn_en; /* boolean, use QM_CGR_EN */
+ union {
+ struct {
+ u16 cscn_targ_upd_ctrl; /* use QM_CSCN_TARG_UDP_ */
+ u16 cscn_targ_dcp_low; /* CSCN_TARG_DCP low-16bits */
+ };
+ u32 cscn_targ; /* use QM_CGR_TARG_* */
+ };
+ u8 cstd_en; /* boolean, use QM_CGR_EN */
+ u8 cs; /* boolean, only used in query response */
+ struct qm_cgr_cs_thres cs_thres; /* use qm_cgr_cs_thres_set64() */
+ u8 mode; /* QMAN_CGR_MODE_FRAME not supported in rev1.0 */
+} __packed;
+#define QM_CGR_EN 0x01 /* For wr_en_*, cscn_en, cstd_en */
+#define QM_CGR_TARG_UDP_CTRL_WRITE_BIT 0x8000 /* value written to portal bit*/
+#define QM_CGR_TARG_UDP_CTRL_DCP 0x4000 /* 0: SWP, 1: DCP */
+#define QM_CGR_TARG_PORTAL(n) (0x80000000 >> (n)) /* s/w portal, 0-9 */
+#define QM_CGR_TARG_FMAN0 0x00200000 /* direct-connect portal: fman0 */
+#define QM_CGR_TARG_FMAN1 0x00100000 /* : fman1 */
+/* Convert CGR thresholds to/from "cs_thres" format */
+static inline u64 qm_cgr_cs_thres_get64(const struct qm_cgr_cs_thres *th)
+{
+ return (u64)th->TA << th->Tn;
+}
+static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val,
+ int roundup)
+{
+ u32 e = 0;
+ int oddbit = 0;
+ while (val > 0xff) {
+ oddbit = val & 1;
+ val >>= 1;
+ e++;
+ if (roundup && oddbit)
+ val++;
+ }
+ th->Tn = e;
+ th->TA = val;
+ return 0;
+}
+
+/* See 1.5.8.5.1: "Initialize FQ" */
+/* See 1.5.8.5.2: "Query FQ" */
+/* See 1.5.8.5.3: "Query FQ Non-Programmable Fields" */
+/* See 1.5.8.5.4: "Alter FQ State Commands " */
+/* See 1.5.8.6.1: "Initialize/Modify CGR" */
+/* See 1.5.8.6.2: "CGR Test Write" */
+/* See 1.5.8.6.3: "Query CGR" */
+/* See 1.5.8.6.4: "Query Congestion Group State" */
+struct qm_mcc_initfq {
+ u8 __reserved1;
+ u16 we_mask; /* Write Enable Mask */
+ u32 fqid; /* 24-bit */
+ u16 count; /* Initialises 'count+1' FQDs */
+ struct qm_fqd fqd; /* the FQD fields go here */
+ u8 __reserved3[30];
+} __packed;
+struct qm_mcc_queryfq {
+ u8 __reserved1[3];
+ u32 fqid; /* 24-bit */
+ u8 __reserved2[56];
+} __packed;
+struct qm_mcc_queryfq_np {
+ u8 __reserved1[3];
+ u32 fqid; /* 24-bit */
+ u8 __reserved2[56];
+} __packed;
+struct qm_mcc_alterfq {
+ u8 __reserved1[3];
+ u32 fqid; /* 24-bit */
+ u8 __reserved2;
+ u8 count; /* number of consecutive FQID */
+ u8 __reserved3[10];
+ u32 context_b; /* frame queue context b */
+ u8 __reserved4[40];
+} __packed;
+struct qm_mcc_initcgr {
+ u8 __reserved1;
+ u16 we_mask; /* Write Enable Mask */
+ struct __qm_mc_cgr cgr; /* CGR fields */
+ u8 __reserved2[2];
+ u8 cgid;
+ u8 __reserved4[32];
+} __packed;
+struct qm_mcc_cgrtestwrite {
+ u8 __reserved1[2];
+ u8 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */
+ u32 i_bcnt_lo; /* low 32-bits of 40-bit */
+ u8 __reserved2[23];
+ u8 cgid;
+ u8 __reserved3[32];
+} __packed;
+struct qm_mcc_querycgr {
+ u8 __reserved1[30];
+ u8 cgid;
+ u8 __reserved2[32];
+} __packed;
+struct qm_mcc_querycongestion {
+ u8 __reserved[63];
+} __packed;
+struct qm_mcc_querywq {
+ u8 __reserved;
+ /* select channel if verb != QUERYWQ_DEDICATED */
+ union {
+ u16 channel_wq; /* ignores wq (3 lsbits) */
+ struct {
+ u16 id:13; /* qm_channel */
+ u16 __reserved1:3;
+ } __packed channel;
+ };
+ u8 __reserved2[60];
+} __packed;
+
+struct qm_mc_command {
+ u8 __dont_write_directly__verb;
+ union {
+ struct qm_mcc_initfq initfq;
+ struct qm_mcc_queryfq queryfq;
+ struct qm_mcc_queryfq_np queryfq_np;
+ struct qm_mcc_alterfq alterfq;
+ struct qm_mcc_initcgr initcgr;
+ struct qm_mcc_cgrtestwrite cgrtestwrite;
+ struct qm_mcc_querycgr querycgr;
+ struct qm_mcc_querycongestion querycongestion;
+ struct qm_mcc_querywq querywq;
+ };
+} __packed;
+#define QM_MCC_VERB_VBIT 0x80
+#define QM_MCC_VERB_MASK 0x7f /* where the verb contains; */
+#define QM_MCC_VERB_INITFQ_PARKED 0x40
+#define QM_MCC_VERB_INITFQ_SCHED 0x41
+#define QM_MCC_VERB_QUERYFQ 0x44
+#define QM_MCC_VERB_QUERYFQ_NP 0x45 /* "non-programmable" fields */
+#define QM_MCC_VERB_QUERYWQ 0x46
+#define QM_MCC_VERB_QUERYWQ_DEDICATED 0x47
+#define QM_MCC_VERB_ALTER_SCHED 0x48 /* Schedule FQ */
+#define QM_MCC_VERB_ALTER_FE 0x49 /* Force Eligible FQ */
+#define QM_MCC_VERB_ALTER_RETIRE 0x4a /* Retire FQ */
+#define QM_MCC_VERB_ALTER_OOS 0x4b /* Take FQ out of service */
+#define QM_MCC_VERB_ALTER_FQXON 0x4d /* FQ XON */
+#define QM_MCC_VERB_ALTER_FQXOFF 0x4e /* FQ XOFF */
+#define QM_MCC_VERB_INITCGR 0x50
+#define QM_MCC_VERB_MODIFYCGR 0x51
+#define QM_MCC_VERB_CGRTESTWRITE 0x52
+#define QM_MCC_VERB_QUERYCGR 0x58
+#define QM_MCC_VERB_QUERYCONGESTION 0x59
+/* INITFQ-specific flags */
+#define QM_INITFQ_WE_MASK 0x01ff /* 'Write Enable' flags; */
+#define QM_INITFQ_WE_OAC 0x0100
+#define QM_INITFQ_WE_ORPC 0x0080
+#define QM_INITFQ_WE_CGID 0x0040
+#define QM_INITFQ_WE_FQCTRL 0x0020
+#define QM_INITFQ_WE_DESTWQ 0x0010
+#define QM_INITFQ_WE_ICSCRED 0x0008
+#define QM_INITFQ_WE_TDTHRESH 0x0004
+#define QM_INITFQ_WE_CONTEXTB 0x0002
+#define QM_INITFQ_WE_CONTEXTA 0x0001
+/* INITCGR/MODIFYCGR-specific flags */
+#define QM_CGR_WE_MASK 0x07ff /* 'Write Enable Mask'; */
+#define QM_CGR_WE_WR_PARM_G 0x0400
+#define QM_CGR_WE_WR_PARM_Y 0x0200
+#define QM_CGR_WE_WR_PARM_R 0x0100
+#define QM_CGR_WE_WR_EN_G 0x0080
+#define QM_CGR_WE_WR_EN_Y 0x0040
+#define QM_CGR_WE_WR_EN_R 0x0020
+#define QM_CGR_WE_CSCN_EN 0x0010
+#define QM_CGR_WE_CSCN_TARG 0x0008
+#define QM_CGR_WE_CSTD_EN 0x0004
+#define QM_CGR_WE_CS_THRES 0x0002
+#define QM_CGR_WE_MODE 0x0001
+
+/* See 1.5.8.5.1: "Initialize FQ" */
+/* See 1.5.8.5.2: "Query FQ" */
+/* See 1.5.8.5.3: "Query FQ Non-Programmable Fields" */
+/* See 1.5.8.5.4: "Alter FQ State Commands " */
+/* See 1.5.8.6.1: "Initialize/Modify CGR" */
+/* See 1.5.8.6.2: "CGR Test Write" */
+/* See 1.5.8.6.3: "Query CGR" */
+/* See 1.5.8.6.4: "Query Congestion Group State" */
+struct qm_mcr_initfq {
+ u8 __reserved1[62];
+} __packed;
+struct qm_mcr_queryfq {
+ u8 __reserved1[8];
+ struct qm_fqd fqd; /* the FQD fields are here */
+ u8 __reserved2[30];
+} __packed;
+struct qm_mcr_queryfq_np {
+ u8 __reserved1;
+ u8 state; /* QM_MCR_NP_STATE_*** */
+ u8 __reserved2;
+ u32 fqd_link:24;
+ u16 __reserved3:2;
+ u16 odp_seq:14;
+ u16 __reserved4:2;
+ u16 orp_nesn:14;
+ u16 __reserved5:1;
+ u16 orp_ea_hseq:15;
+ u16 __reserved6:1;
+ u16 orp_ea_tseq:15;
+ u8 __reserved7;
+ u32 orp_ea_hptr:24;
+ u8 __reserved8;
+ u32 orp_ea_tptr:24;
+ u8 __reserved9;
+ u32 pfdr_hptr:24;
+ u8 __reserved10;
+ u32 pfdr_tptr:24;
+ u8 __reserved11[5];
+ u8 __reserved12:7;
+ u8 is:1;
+ u16 ics_surp;
+ u32 byte_cnt;
+ u8 __reserved13;
+ u32 frm_cnt:24;
+ u32 __reserved14;
+ u16 ra1_sfdr; /* QM_MCR_NP_RA1_*** */
+ u16 ra2_sfdr; /* QM_MCR_NP_RA2_*** */
+ u16 __reserved15;
+ u16 od1_sfdr; /* QM_MCR_NP_OD1_*** */
+ u16 od2_sfdr; /* QM_MCR_NP_OD2_*** */
+ u16 od3_sfdr; /* QM_MCR_NP_OD3_*** */
+} __packed;
+struct qm_mcr_alterfq {
+ u8 fqs; /* Frame Queue Status */
+ u8 __reserved1[61];
+} __packed;
+struct qm_mcr_initcgr {
+ u8 __reserved1[62];
+} __packed;
+struct qm_mcr_cgrtestwrite {
+ u16 __reserved1;
+ struct __qm_mc_cgr cgr; /* CGR fields */
+ u8 __reserved2[3];
+ u32 __reserved3:24;
+ u32 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */
+ u32 i_bcnt_lo; /* low 32-bits of 40-bit */
+ u32 __reserved4:24;
+ u32 a_bcnt_hi:8;/* high 8-bits of 40-bit "Average" */
+ u32 a_bcnt_lo; /* low 32-bits of 40-bit */
+ u16 lgt; /* Last Group Tick */
+ u16 wr_prob_g;
+ u16 wr_prob_y;
+ u16 wr_prob_r;
+ u8 __reserved5[8];
+} __packed;
+struct qm_mcr_querycgr {
+ u16 __reserved1;
+ struct __qm_mc_cgr cgr; /* CGR fields */
+ u8 __reserved2[3];
+ u32 __reserved3:24;
+ u32 i_bcnt_hi:8;/* high 8-bits of 40-bit "Instant" */
+ u32 i_bcnt_lo; /* low 32-bits of 40-bit */
+ u32 __reserved4:24;
+ u32 a_bcnt_hi:8;/* high 8-bits of 40-bit "Average" */
+ u32 a_bcnt_lo; /* low 32-bits of 40-bit */
+ union {
+ u32 cscn_targ_swp[4];
+ u8 __reserved5[16];
+ };
+} __packed;
+static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q)
+{
+ return ((u64)q->i_bcnt_hi << 32) | (u64)q->i_bcnt_lo;
+}
+static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q)
+{
+ return ((u64)q->a_bcnt_hi << 32) | (u64)q->a_bcnt_lo;
+}
+static inline u64 qm_mcr_cgrtestwrite_i_get64(
+ const struct qm_mcr_cgrtestwrite *q)
+{
+ return ((u64)q->i_bcnt_hi << 32) | (u64)q->i_bcnt_lo;
+}
+static inline u64 qm_mcr_cgrtestwrite_a_get64(
+ const struct qm_mcr_cgrtestwrite *q)
+{
+ return ((u64)q->a_bcnt_hi << 32) | (u64)q->a_bcnt_lo;
+}
+/* Macro, so we compile better if 'v' isn't always 64-bit */
+#define qm_mcr_querycgr_i_set64(q, v) \
+ do { \
+ struct qm_mcr_querycgr *__q931 = (fd); \
+ __q931->i_bcnt_hi = upper_32_bits(v); \
+ __q931->i_bcnt_lo = lower_32_bits(v); \
+ } while (0)
+#define qm_mcr_querycgr_a_set64(q, v) \
+ do { \
+ struct qm_mcr_querycgr *__q931 = (fd); \
+ __q931->a_bcnt_hi = upper_32_bits(v); \
+ __q931->a_bcnt_lo = lower_32_bits(v); \
+ } while (0)
+struct __qm_mcr_querycongestion {
+ u32 __state[8];
+};
+struct qm_mcr_querycongestion {
+ u8 __reserved[30];
+ /* Access this struct using QM_MCR_QUERYCONGESTION() */
+ struct __qm_mcr_querycongestion state;
+} __packed;
+struct qm_mcr_querywq {
+ union {
+ u16 channel_wq; /* ignores wq (3 lsbits) */
+ struct {
+ u16 id:13; /* qm_channel */
+ u16 __reserved:3;
+ } __packed channel;
+ };
+ u8 __reserved[28];
+ u32 wq_len[8];
+} __packed;
+
+struct qm_mc_result {
+ u8 verb;
+ u8 result;
+ union {
+ struct qm_mcr_initfq initfq;
+ struct qm_mcr_queryfq queryfq;
+ struct qm_mcr_queryfq_np queryfq_np;
+ struct qm_mcr_alterfq alterfq;
+ struct qm_mcr_initcgr initcgr;
+ struct qm_mcr_cgrtestwrite cgrtestwrite;
+ struct qm_mcr_querycgr querycgr;
+ struct qm_mcr_querycongestion querycongestion;
+ struct qm_mcr_querywq querywq;
+ };
+} __packed;
+
+#define QM_MCR_VERB_RRID 0x80
+#define QM_MCR_VERB_MASK QM_MCC_VERB_MASK
+#define QM_MCR_VERB_INITFQ_PARKED QM_MCC_VERB_INITFQ_PARKED
+#define QM_MCR_VERB_INITFQ_SCHED QM_MCC_VERB_INITFQ_SCHED
+#define QM_MCR_VERB_QUERYFQ QM_MCC_VERB_QUERYFQ
+#define QM_MCR_VERB_QUERYFQ_NP QM_MCC_VERB_QUERYFQ_NP
+#define QM_MCR_VERB_QUERYWQ QM_MCC_VERB_QUERYWQ
+#define QM_MCR_VERB_QUERYWQ_DEDICATED QM_MCC_VERB_QUERYWQ_DEDICATED
+#define QM_MCR_VERB_ALTER_SCHED QM_MCC_VERB_ALTER_SCHED
+#define QM_MCR_VERB_ALTER_FE QM_MCC_VERB_ALTER_FE
+#define QM_MCR_VERB_ALTER_RETIRE QM_MCC_VERB_ALTER_RETIRE
+#define QM_MCR_VERB_ALTER_OOS QM_MCC_VERB_ALTER_OOS
+#define QM_MCR_RESULT_NULL 0x00
+#define QM_MCR_RESULT_OK 0xf0
+#define QM_MCR_RESULT_ERR_FQID 0xf1
+#define QM_MCR_RESULT_ERR_FQSTATE 0xf2
+#define QM_MCR_RESULT_ERR_NOTEMPTY 0xf3 /* OOS fails if FQ is !empty */
+#define QM_MCR_RESULT_ERR_BADCHANNEL 0xf4
+#define QM_MCR_RESULT_PENDING 0xf8
+#define QM_MCR_RESULT_ERR_BADCOMMAND 0xff
+#define QM_MCR_NP_STATE_FE 0x10
+#define QM_MCR_NP_STATE_R 0x08
+#define QM_MCR_NP_STATE_MASK 0x07 /* Reads FQD::STATE; */
+#define QM_MCR_NP_STATE_OOS 0x00
+#define QM_MCR_NP_STATE_RETIRED 0x01
+#define QM_MCR_NP_STATE_TEN_SCHED 0x02
+#define QM_MCR_NP_STATE_TRU_SCHED 0x03
+#define QM_MCR_NP_STATE_PARKED 0x04
+#define QM_MCR_NP_STATE_ACTIVE 0x05
+#define QM_MCR_NP_PTR_MASK 0x07ff /* for RA[12] & OD[123] */
+#define QM_MCR_NP_RA1_NRA(v) (((v) >> 14) & 0x3) /* FQD::NRA */
+#define QM_MCR_NP_RA2_IT(v) (((v) >> 14) & 0x1) /* FQD::IT */
+#define QM_MCR_NP_OD1_NOD(v) (((v) >> 14) & 0x3) /* FQD::NOD */
+#define QM_MCR_NP_OD3_NPC(v) (((v) >> 14) & 0x3) /* FQD::NPC */
+#define QM_MCR_FQS_ORLPRESENT 0x02 /* ORL fragments to come */
+#define QM_MCR_FQS_NOTEMPTY 0x01 /* FQ has enqueued frames */
+/* This extracts the state for congestion group 'n' from a query response.
+ * Eg.
+ * u8 cgr = [...];
+ * struct qm_mc_result *res = [...];
+ * printf("congestion group %d congestion state: %d\n", cgr,
+ * QM_MCR_QUERYCONGESTION(&res->querycongestion.state, cgr));
+ */
+#define __CGR_WORD(num) (num >> 5)
+#define __CGR_SHIFT(num) (num & 0x1f)
+#define __CGR_NUM (sizeof(struct __qm_mcr_querycongestion) << 3)
+static inline int QM_MCR_QUERYCONGESTION(struct __qm_mcr_querycongestion *p,
+ u8 cgr)
+{
+ return p->__state[__CGR_WORD(cgr)] & (0x80000000 >> __CGR_SHIFT(cgr));
+}
+
+
+/*********************/
+/* Utility interface */
+/*********************/
+
+/* Represents an allocator over a range of FQIDs. NB, accesses are not locked,
+ * spinlock them yourself if needed. */
+struct qman_fqid_pool;
+
+/* Create/destroy a FQID pool, num must be a multiple of 32. NB, _destroy()
+ * always succeeds, but returns non-zero if there were "leaked" FQID
+ * allocations. */
+struct qman_fqid_pool *qman_fqid_pool_create(u32 fqid_start, u32 num);
+int qman_fqid_pool_destroy(struct qman_fqid_pool *pool);
+/* Alloc/free a FQID from the range. _alloc() returns zero for success. */
+int qman_fqid_pool_alloc(struct qman_fqid_pool *pool, u32 *fqid);
+void qman_fqid_pool_free(struct qman_fqid_pool *pool, u32 fqid);
+u32 qman_fqid_pool_used(struct qman_fqid_pool *pool);
+
+/*******************************************************************/
+/* Managed (aka "shared" or "mux/demux") portal, high-level i/face */
+/*******************************************************************/
+
+ /* Portal and Frame Queues */
+ /* ----------------------- */
+/* Represents a managed portal */
+struct qman_portal;
+
+/* This object type represents Qman frame queue descriptors (FQD), it is
+ * cacheline-aligned, and initialised by qman_create_fq(). The structure is
+ * defined further down. */
+struct qman_fq;
+
+/* This object type represents a Qman congestion group, it is defined further
+ * down. */
+struct qman_cgr;
+
+struct qman_portal_config {
+ /* If the caller enables DQRR stashing (and thus wishes to operate the
+ * portal from only one cpu), this is the logical CPU that the portal
+ * will stash to. Whether stashing is enabled or not, this setting is
+ * also used for any "core-affine" portals, ie. default portals
+ * associated to the corresponding cpu. -1 implies that there is no core
+ * affinity configured. */
+ int cpu;
+ /* portal interrupt line */
+ int irq;
+ /* Is this portal shared? (If so, it has coarser locking and demuxes
+ * processing on behalf of other CPUs.) */
+ int is_shared;
+ /* The portal's dedicated channel id, use this value for initialising
+ * frame queues to target this portal when scheduled. */
+ u16 channel;
+ /* A mask of which pool channels this portal has dequeue access to
+ * (using QM_SDQCR_CHANNELS_POOL(n) for the bitmask) */
+ u32 pools;
+};
+
+/* This enum, and the callback type that returns it, are used when handling
+ * dequeued frames via DQRR. Note that for "null" callbacks registered with the
+ * portal object (for handling dequeues that do not demux because contextB is
+ * NULL), the return value *MUST* be qman_cb_dqrr_consume. */
+enum qman_cb_dqrr_result {
+ /* DQRR entry can be consumed */
+ qman_cb_dqrr_consume,
+ /* Like _consume, but requests parking - FQ must be held-active */
+ qman_cb_dqrr_park,
+ /* Does not consume, for DCA mode only. This allows out-of-order
+ * consumes by explicit calls to qman_dca() and/or the use of implicit
+ * DCA via EQCR entries. */
+ qman_cb_dqrr_defer,
+ /* Stop processing without consuming this ring entry. Exits the current
+ * qman_poll_dqrr() or interrupt-handling, as appropriate. If within an
+ * interrupt handler, the callback would typically call
+ * qman_irqsource_remove(QM_PIRQ_DQRI) before returning this value,
+ * otherwise the interrupt will reassert immediately. */
+ qman_cb_dqrr_stop,
+ /* Like qman_cb_dqrr_stop, but consumes the current entry. */
+ qman_cb_dqrr_consume_stop
+};
+typedef enum qman_cb_dqrr_result (*qman_cb_dqrr)(struct qman_portal *qm,
+ struct qman_fq *fq,
+ const struct qm_dqrr_entry *dqrr);
+
+/* This callback type is used when handling ERNs, FQRNs and FQRLs via MR. They
+ * are always consumed after the callback returns. */
+typedef void (*qman_cb_mr)(struct qman_portal *qm, struct qman_fq *fq,
+ const struct qm_mr_entry *msg);
+
+/* This callback type is used when handling DCP ERNs */
+typedef void (*qman_cb_dc_ern)(struct qman_portal *qm,
+ const struct qm_mr_entry *msg);
+
+/* s/w-visible states. Ie. tentatively scheduled + truly scheduled + active +
+ * held-active + held-suspended are just "sched". Things like "retired" will not
+ * be assumed until it is complete (ie. QMAN_FQ_STATE_CHANGING is set until
+ * then, to indicate it's completing and to gate attempts to retry the retire
+ * command). Note, park commands do not set QMAN_FQ_STATE_CHANGING because it's
+ * technically impossible in the case of enqueue DCAs (which refer to DQRR ring
+ * index rather than the FQ that ring entry corresponds to), so repeated park
+ * commands are allowed (if you're silly enough to try) but won't change FQ
+ * state, and the resulting park notifications move FQs from "sched" to
+ * "parked". */
+enum qman_fq_state {
+ qman_fq_state_oos,
+ qman_fq_state_parked,
+ qman_fq_state_sched,
+ qman_fq_state_retired
+};
+
+/* Frame queue objects (struct qman_fq) are stored within memory passed to
+ * qman_create_fq(), as this allows stashing of caller-provided demux callback
+ * pointers at no extra cost to stashing of (driver-internal) FQ state. If the
+ * caller wishes to add per-FQ state and have it benefit from dequeue-stashing,
+ * they should;
+ *
+ * (a) extend the qman_fq structure with their state; eg.
+ *
+ * // myfq is allocated and driver_fq callbacks filled in;
+ * struct my_fq {
+ * struct qman_fq base;
+ * int an_extra_field;
+ * [ ... add other fields to be associated with each FQ ...]
+ * } *myfq = some_my_fq_allocator();
+ * struct qman_fq *fq = qman_create_fq(fqid, flags, &myfq->base);
+ *
+ * // in a dequeue callback, access extra fields from 'fq' via a cast;
+ * struct my_fq *myfq = (struct my_fq *)fq;
+ * do_something_with(myfq->an_extra_field);
+ * [...]
+ *
+ * (b) when and if configuring the FQ for context stashing, specify how ever
+ * many cachelines are required to stash 'struct my_fq', to accelerate not
+ * only the Qman driver but the callback as well.
+ */
+
+struct qman_fq_cb {
+ qman_cb_dqrr dqrr; /* for dequeued frames */
+ qman_cb_mr ern; /* for s/w ERNs */
+ qman_cb_mr fqs; /* frame-queue state changes*/
+};
+
+struct qman_fq {
+ /* Caller of qman_create_fq() provides these demux callbacks */
+ struct qman_fq_cb cb;
+ /* These are internal to the driver, don't touch. In particular, they
+ * may change, be removed, or extended (so you shouldn't rely on
+ * sizeof(qman_fq) being a constant). */
+ spinlock_t fqlock;
+ u32 fqid;
+ volatile unsigned long flags;
+ enum qman_fq_state state;
+ int cgr_groupid;
+ struct rb_node node;
+#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
+ u32 key;
+#endif
+};
+
+/* This callback type is used when handling congestion group entry/exit.
+ * 'congested' is non-zero on congestion-entry, and zero on congestion-exit. */
+typedef void (*qman_cb_cgr)(struct qman_portal *qm,
+ struct qman_cgr *cgr, int congested);
+
+struct qman_cgr {
+ /* Set these prior to qman_create_cgr() */
+ u32 cgrid; /* 0..255, but u32 to allow specials like -1, 256, etc.*/
+ qman_cb_cgr cb;
+ /* These are private to the driver */
+ u16 chan; /* portal channel this object is created on */
+ struct list_head node;
+};
+
+/* Flags to qman_create_fq() */
+#define QMAN_FQ_FLAG_NO_ENQUEUE 0x00000001 /* can't enqueue */
+#define QMAN_FQ_FLAG_NO_MODIFY 0x00000002 /* can only enqueue */
+#define QMAN_FQ_FLAG_TO_DCPORTAL 0x00000004 /* consumed by CAAM/PME/Fman */
+#define QMAN_FQ_FLAG_LOCKED 0x00000008 /* multi-core locking */
+#define QMAN_FQ_FLAG_AS_IS 0x00000010 /* query h/w state */
+#define QMAN_FQ_FLAG_DYNAMIC_FQID 0x00000020 /* (de)allocate fqid */
+
+/* Flags to qman_destroy_fq() */
+#define QMAN_FQ_DESTROY_PARKED 0x00000001 /* FQ can be parked or OOS */
+
+/* Flags from qman_fq_state() */
+#define QMAN_FQ_STATE_CHANGING 0x80000000 /* 'state' is changing */
+#define QMAN_FQ_STATE_NE 0x40000000 /* retired FQ isn't empty */
+#define QMAN_FQ_STATE_ORL 0x20000000 /* retired FQ has ORL */
+#define QMAN_FQ_STATE_BLOCKOOS 0xe0000000 /* if any are set, no OOS */
+#define QMAN_FQ_STATE_CGR_EN 0x10000000 /* CGR enabled */
+#define QMAN_FQ_STATE_VDQCR 0x08000000 /* being volatile dequeued */
+
+/* Flags to qman_init_fq() */
+#define QMAN_INITFQ_FLAG_SCHED 0x00000001 /* schedule rather than park */
+#define QMAN_INITFQ_FLAG_LOCAL 0x00000004 /* set dest portal */
+
+/* Flags to qman_volatile_dequeue() */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+#define QMAN_VOLATILE_FLAG_WAIT 0x00000001 /* wait if VDQCR is in use */
+#define QMAN_VOLATILE_FLAG_WAIT_INT 0x00000002 /* if wait, interruptible? */
+#define QMAN_VOLATILE_FLAG_FINISH 0x00000004 /* wait till VDQCR completes */
+#endif
+
+/* Flags to qman_enqueue(). NB, the strange numbering is to align with hardware,
+ * bit-wise. (NB: the PME API is sensitive to these precise numberings too, so
+ * any change here should be audited in PME.) */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT
+#define QMAN_ENQUEUE_FLAG_WAIT 0x00010000 /* wait if EQCR is full */
+#define QMAN_ENQUEUE_FLAG_WAIT_INT 0x00020000 /* if wait, interruptible? */
+#ifdef CONFIG_FSL_DPA_CAN_WAIT_SYNC
+#define QMAN_ENQUEUE_FLAG_WAIT_SYNC 0x00000004 /* if wait, until consumed? */
+#endif
+#endif
+#define QMAN_ENQUEUE_FLAG_WATCH_CGR 0x00080000 /* watch congestion state */
+#define QMAN_ENQUEUE_FLAG_DCA 0x00008000 /* perform enqueue-DCA */
+#define QMAN_ENQUEUE_FLAG_DCA_PARK 0x00004000 /* If DCA, requests park */
+#define QMAN_ENQUEUE_FLAG_DCA_PTR(p) /* If DCA, p is DQRR entry */ \
+ (((u32)(p) << 2) & 0x00000f00)
+#define QMAN_ENQUEUE_FLAG_C_GREEN 0x00000000 /* choose one C_*** flag */
+#define QMAN_ENQUEUE_FLAG_C_YELLOW 0x00000008
+#define QMAN_ENQUEUE_FLAG_C_RED 0x00000010
+#define QMAN_ENQUEUE_FLAG_C_OVERRIDE 0x00000018
+/* For the ORP-specific qman_enqueue_orp() variant;
+ * - this flag indicates "Not Last In Sequence", ie. all but the final fragment
+ * of a frame. */
+#define QMAN_ENQUEUE_FLAG_NLIS 0x01000000
+/* - this flag performs no enqueue but fills in an ORP sequence number that
+ * would otherwise block it (eg. if a frame has been dropped). */
+#define QMAN_ENQUEUE_FLAG_HOLE 0x02000000
+/* - this flag performs no enqueue but advances NESN to the given sequence
+ * number. */
+#define QMAN_ENQUEUE_FLAG_NESN 0x04000000
+
+/* Flags to qman_modify_cgr() */
+#define QMAN_CGR_FLAG_USE_INIT 0x00000001
+#define QMAN_CGR_MODE_FRAME 0x00000001
+
+ /* Portal Management */
+ /* ----------------- */
+/**
+ * qman_get_portal_config - get portal configuration settings
+ *
+ * This returns a read-only view of the current cpu's affine portal settings.
+ */
+const struct qman_portal_config *qman_get_portal_config(void);
+
+/**
+ * qman_irqsource_get - return the portal work that is interrupt-driven
+ *
+ * Returns a bitmask of QM_PIRQ_**I processing sources that are currently
+ * enabled for interrupt handling on the current cpu's affine portal. These
+ * sources will trigger the portal interrupt and the interrupt handler (or a
+ * tasklet/bottom-half it defers to) will perform the corresponding processing
+ * work. The qman_poll_***() functions will only process sources that are not in
+ * this bitmask. If the current CPU is sharing a portal hosted on another CPU,
+ * this always returns zero.
+ */
+u32 qman_irqsource_get(void);
+
+/**
+ * qman_irqsource_add - add processing sources to be interrupt-driven
+ * @bits: bitmask of QM_PIRQ_**I processing sources
+ *
+ * Adds processing sources that should be interrupt-driven (rather than
+ * processed via qman_poll_***() functions). Returns zero for success, or
+ * -EINVAL if the current CPU is sharing a portal hosted on another CPU.
+ */
+int qman_irqsource_add(u32 bits);
+
+/**
+ * qman_irqsource_remove - remove processing sources from being interrupt-driven
+ * @bits: bitmask of QM_PIRQ_**I processing sources
+ *
+ * Removes processing sources from being interrupt-driven, so that they will
+ * instead be processed via qman_poll_***() functions. Returns zero for success,
+ * or -EINVAL if the current CPU is sharing a portal hosted on another CPU.
+ */
+int qman_irqsource_remove(u32 bits);
+
+/**
+ * qman_affine_cpus - return a mask of cpus that have affine portals
+ */
+const cpumask_t *qman_affine_cpus(void);
+
+/**
+ * qman_affine_channel - return the channel ID of an portal
+ * @cpu: the cpu whose affine portal is the subject of the query
+ *
+ * If @cpu is -1, the affine portal for the current CPU will be used. It is a
+ * bug to call this function for any value of @cpu (other than -1) that is not a
+ * member of the mask returned from qman_affine_cpus().
+ */
+u16 qman_affine_channel(int cpu);
+
+/**
+ * qman_get_affine_portal - return the portal pointer affine to cpu
+ * @cpu: the cpu whose affine portal is the subject of the query
+ *
+ */
+void *qman_get_affine_portal(int cpu);
+
+/**
+ * qman_poll_dqrr - process DQRR (fast-path) entries
+ * @limit: the maximum number of DQRR entries to process
+ *
+ * Use of this function requires that DQRR processing not be interrupt-driven.
+ * Ie. the value returned by qman_irqsource_get() should not include
+ * QM_PIRQ_DQRI. If the current CPU is sharing a portal hosted on another CPU,
+ * this function will return -EINVAL, otherwise the return value is >=0 and
+ * represents the number of DQRR entries processed.
+ */
+int qman_poll_dqrr(unsigned int limit);
+
+/**
+ * qman_poll_slow - process anything (except DQRR) that isn't interrupt-driven.
+ *
+ * This function does any portal processing that isn't interrupt-driven. If the
+ * current CPU is sharing a portal hosted on another CPU, this function will
+ * return (u32)-1, otherwise the return value is a bitmask of QM_PIRQ_* sources
+ * indicating what interrupt sources were actually processed by the call.
+ */
+u32 qman_poll_slow(void);
+
+/**
+ * qman_poll - legacy wrapper for qman_poll_dqrr() and qman_poll_slow()
+ *
+ * Dispatcher logic on a cpu can use this to trigger any maintenance of the
+ * affine portal. There are two classes of portal processing in question;
+ * fast-path (which involves demuxing dequeue ring (DQRR) entries and tracking
+ * enqueue ring (EQCR) consumption), and slow-path (which involves EQCR
+ * thresholds, congestion state changes, etc). This function does whatever
+ * processing is not triggered by interrupts.
+ *
+ * Note, if DQRR and some slow-path processing are poll-driven (rather than
+ * interrupt-driven) then this function uses a heuristic to determine how often
+ * to run slow-path processing - as slow-path processing introduces at least a
+ * minimum latency each time it is run, whereas fast-path (DQRR) processing is
+ * close to zero-cost if there is no work to be done. Applications can tune this
+ * behaviour themselves by using qman_poll_dqrr() and qman_poll_slow() directly
+ * rather than going via this wrapper.
+ */
+void qman_poll(void);
+
+/**
+ * qman_stop_dequeues - Stop h/w dequeuing to the s/w portal
+ *
+ * Disables DQRR processing of the portal. This is reference-counted, so
+ * qman_start_dequeues() must be called as many times as qman_stop_dequeues() to
+ * truly re-enable dequeuing.
+ */
+void qman_stop_dequeues(void);
+
+/**
+ * qman_start_dequeues - (Re)start h/w dequeuing to the s/w portal
+ *
+ * Enables DQRR processing of the portal. This is reference-counted, so
+ * qman_start_dequeues() must be called as many times as qman_stop_dequeues() to
+ * truly re-enable dequeuing.
+ */
+void qman_start_dequeues(void);
+
+/**
+ * qman_static_dequeue_add - Add pool channels to the portal SDQCR
+ * @pools: bit-mask of pool channels, using QM_SDQCR_CHANNELS_POOL(n)
+ *
+ * Adds a set of pool channels to the portal's static dequeue command register
+ * (SDQCR). The requested pools are limited to those the portal has dequeue
+ * access to.
+ */
+void qman_static_dequeue_add(u32 pools);
+
+/**
+ * qman_static_dequeue_del - Remove pool channels from the portal SDQCR
+ * @pools: bit-mask of pool channels, using QM_SDQCR_CHANNELS_POOL(n)
+ *
+ * Removes a set of pool channels from the portal's static dequeue command
+ * register (SDQCR). The requested pools are limited to those the portal has
+ * dequeue access to.
+ */
+void qman_static_dequeue_del(u32 pools);
+
+/**
+ * qman_static_dequeue_get - return the portal's current SDQCR
+ *
+ * Returns the portal's current static dequeue command register (SDQCR). The
+ * entire register is returned, so if only the currently-enabled pool channels
+ * are desired, mask the return value with QM_SDQCR_CHANNELS_POOL_MASK.
+ */
+u32 qman_static_dequeue_get(void);
+
+/**
+ * qman_dca - Perform a Discrete Consumption Acknowledgement
+ * @dq: the DQRR entry to be consumed
+ * @park_request: indicates whether the held-active @fq should be parked
+ *
+ * Only allowed in DCA-mode portals, for DQRR entries whose handler callback had
+ * previously returned 'qman_cb_dqrr_defer'. NB, as with the other APIs, this
+ * does not take a 'portal' argument but implies the core affine portal from the
+ * cpu that is currently executing the function. For reasons of locking, this
+ * function must be called from the same CPU as that which processed the DQRR
+ * entry in the first place.
+ */
+void qman_dca(struct qm_dqrr_entry *dq, int park_request);
+
+/**
+ * qman_eqcr_is_empty - Determine if portal's EQCR is empty
+ *
+ * For use in situations where a cpu-affine caller needs to determine when all
+ * enqueues for the local portal have been processed by Qman but can't use the
+ * QMAN_ENQUEUE_FLAG_WAIT_SYNC flag to do this from the final qman_enqueue().
+ * The function forces tracking of EQCR consumption (which normally doesn't
+ * happen until enqueue processing needs to find space to put new enqueue
+ * commands), and returns zero if the ring still has unprocessed entries,
+ * non-zero if it is empty.
+ */
+int qman_eqcr_is_empty(void);
+
+/**
+ * qman_set_dc_ern - Set the handler for DCP enqueue rejection notifications
+ * @handler: callback for processing DCP ERNs
+ * @affine: whether this handler is specific to the locally affine portal
+ *
+ * If a hardware block's interface to Qman (ie. its direct-connect portal, or
+ * DCP) is configured not to receive enqueue rejections, then any enqueues
+ * through that DCP that are rejected will be sent to a given software portal.
+ * If @affine is non-zero, then this handler will only be used for DCP ERNs
+ * received on the portal affine to the current CPU. If multiple CPUs share a
+ * portal and they all call this function, they will be setting the handler for
+ * the same portal! If @affine is zero, then this handler will be global to all
+ * portals handled by this instance of the driver. Only those portals that do
+ * not have their own affine handler will use the global handler.
+ */
+void qman_set_dc_ern(qman_cb_dc_ern handler, int affine);
+
+ /* FQ management */
+ /* ------------- */
+/**
+ * qman_create_fq - Allocates a FQ
+ * @fqid: the index of the FQD to encapsulate, must be "Out of Service"
+ * @flags: bit-mask of QMAN_FQ_FLAG_*** options
+ * @fq: memory for storing the 'fq', with callbacks filled in
+ *
+ * Creates a frame queue object for the given @fqid, unless the
+ * QMAN_FQ_FLAG_DYNAMIC_FQID flag is set in @flags, in which case a FQID is
+ * dynamically allocated (or the function fails if none are available). Once
+ * created, the caller should not touch the memory at 'fq' except as extended to
+ * adjacent memory for user-defined fields (see the definition of "struct
+ * qman_fq" for more info). NO_MODIFY is only intended for enqueuing to
+ * pre-existing frame-queues that aren't to be otherwise interfered with, it
+ * prevents all other modifications to the frame queue. The TO_DCPORTAL flag
+ * causes the driver to honour any contextB modifications requested in the
+ * qm_init_fq() API, as this indicates the frame queue will be consumed by a
+ * direct-connect portal (PME, CAAM, or Fman). When frame queues are consumed by
+ * software portals, the contextB field is controlled by the driver and can't be
+ * modified by the caller. If the AS_IS flag is specified, management commands
+ * will be used on portal @p to query state for frame queue @fqid and construct
+ * a frame queue object based on that, rather than assuming/requiring that it be
+ * Out of Service.
+ */
+int qman_create_fq(u32 fqid, u32 flags, struct qman_fq *fq);
+
+/**
+ * qman_destroy_fq - Deallocates a FQ
+ * @fq: the frame queue object to release
+ * @flags: bit-mask of QMAN_FQ_FREE_*** options
+ *
+ * The memory for this frame queue object ('fq' provided in qman_create_fq()) is
+ * not deallocated but the caller regains ownership, to do with as desired. The
+ * FQ must be in the 'out-of-service' state unless the QMAN_FQ_FREE_PARKED flag
+ * is specified, in which case it may also be in the 'parked' state.
+ */
+void qman_destroy_fq(struct qman_fq *fq, u32 flags);
+
+/**
+ * qman_fq_fqid - Queries the frame queue ID of a FQ object
+ * @fq: the frame queue object to query
+ */
+u32 qman_fq_fqid(struct qman_fq *fq);
+
+/**
+ * qman_fq_state - Queries the state of a FQ object
+ * @fq: the frame queue object to query
+ * @state: pointer to state enum to return the FQ scheduling state
+ * @flags: pointer to state flags to receive QMAN_FQ_STATE_*** bitmask
+ *
+ * Queries the state of the FQ object, without performing any h/w commands.
+ * This captures the state, as seen by the driver, at the time the function
+ * executes.
+ */
+void qman_fq_state(struct qman_fq *fq, enum qman_fq_state *state, u32 *flags);
+
+/**
+ * qman_init_fq - Initialises FQ fields, leaves the FQ "parked" or "scheduled"
+ * @fq: the frame queue object to modify, must be 'parked' or new.
+ * @flags: bit-mask of QMAN_INITFQ_FLAG_*** options
+ * @opts: the FQ-modification settings, as defined in the low-level API
+ *
+ * The @opts parameter comes from the low-level portal API. Select
+ * QMAN_INITFQ_FLAG_SCHED in @flags to cause the frame queue to be scheduled
+ * rather than parked. NB, @opts can be NULL.
+ *
+ * Note that some fields and options within @opts may be ignored or overwritten
+ * by the driver;
+ * 1. the 'count' and 'fqid' fields are always ignored (this operation only
+ * affects one frame queue: @fq).
+ * 2. the QM_INITFQ_WE_CONTEXTB option of the 'we_mask' field and the associated
+ * 'fqd' structure's 'context_b' field are sometimes overwritten;
+ * - if @fq was not created with QMAN_FQ_FLAG_TO_DCPORTAL, then context_b is
+ * initialised to a value used by the driver for demux.
+ * - if context_b is initialised for demux, so is context_a in case stashing
+ * is requested (see item 4).
+ * (So caller control of context_b is only possible for TO_DCPORTAL frame queue
+ * objects.)
+ * 3. if @flags contains QMAN_INITFQ_FLAG_LOCAL, the 'fqd' structure's
+ * 'dest::channel' field will be overwritten to match the portal used to issue
+ * the command. If the WE_DESTWQ write-enable bit had already been set by the
+ * caller, the channel workqueue will be left as-is, otherwise the write-enable
+ * bit is set and the workqueue is set to a default of 4. If the "LOCAL" flag
+ * isn't set, the destination channel/workqueue fields and the write-enable bit
+ * are left as-is.
+ * 4. if the driver overwrites context_a/b for demux, then if
+ * QM_INITFQ_WE_CONTEXTA is set, the driver will only overwrite
+ * context_a.address fields and will leave the stashing fields provided by the
+ * user alone, otherwise it will zero out the context_a.stashing fields.
+ */
+int qman_init_fq(struct qman_fq *fq, u32 flags, struct qm_mcc_initfq *opts);
+
+/**
+ * qman_schedule_fq - Schedules a FQ
+ * @fq: the frame queue object to schedule, must be 'parked'
+ *
+ * Schedules the frame queue, which must be Parked, which takes it to
+ * Tentatively-Scheduled or Truly-Scheduled depending on its fill-level.
+ */
+int qman_schedule_fq(struct qman_fq *fq);
+
+/**
+ * qman_retire_fq - Retires a FQ
+ * @fq: the frame queue object to retire
+ * @flags: FQ flags (as per qman_fq_state) if retirement completes immediately
+ *
+ * Retires the frame queue. This returns zero if it succeeds immediately, +1 if
+ * the retirement was started asynchronously, otherwise it returns negative for
+ * failure. When this function returns zero, @flags is set to indicate whether
+ * the retired FQ is empty and/or whether it has any ORL fragments (to show up
+ * as ERNs). Otherwise the corresponding flags will be known when a subsequent
+ * FQRN message shows up on the portal's message ring.
+ *
+ * NB, if the retirement is asynchronous (the FQ was in the Truly Scheduled or
+ * Active state), the completion will be via the message ring as a FQRN - but
+ * the corresponding callback may occur before this function returns!! Ie. the
+ * caller should be prepared to accept the callback as the function is called,
+ * not only once it has returned.
+ */
+int qman_retire_fq(struct qman_fq *fq, u32 *flags);
+
+/**
+ * qman_oos_fq - Puts a FQ "out of service"
+ * @fq: the frame queue object to be put out-of-service, must be 'retired'
+ *
+ * The frame queue must be retired and empty, and if any order restoration list
+ * was released as ERNs at the time of retirement, they must all be consumed.
+ */
+int qman_oos_fq(struct qman_fq *fq);
+
+/**
+ * qman_fq_flow_control - Set the XON/XOFF state of a FQ
+ * @fq: the frame queue object to be set to XON/XOFF state, must not be 'oos',
+ * or 'retired' or 'parked' state
+ * @xon: boolean to set fq in XON or XOFF state
+ *
+ * The frame should be in Tentatively Scheduled state or Truly Schedule sate,
+ * otherwise the IFSI interrupt will be asserted.
+ */
+int qman_fq_flow_control(struct qman_fq *fq, int xon);
+
+/**
+ * qman_query_fq - Queries FQD fields (via h/w query command)
+ * @fq: the frame queue object to be queried
+ * @fqd: storage for the queried FQD fields
+ */
+int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd);
+
+/**
+ * qman_query_fq_np - Queries non-programmable FQD fields
+ * @fq: the frame queue object to be queried
+ * @np: storage for the queried FQD fields
+ */
+int qman_query_fq_np(struct qman_fq *fq, struct qm_mcr_queryfq_np *np);
+
+/**
+ * qman_query_wq - Queries work queue lengths
+ * @query_dedicated: If non-zero, query length of WQs in the channel dedicated
+ * to this software portal. Otherwise, query length of WQs in a
+ * channel specified in wq.
+ * @wq: storage for the queried WQs lengths. Also specified the channel to
+ * to query if query_dedicated is zero.
+ */
+int qman_query_wq(u8 query_dedicated, struct qm_mcr_querywq *wq);
+
+/**
+ * qman_volatile_dequeue - Issue a volatile dequeue command
+ * @fq: the frame queue object to dequeue from
+ * @flags: a bit-mask of QMAN_VOLATILE_FLAG_*** options
+ * @vdqcr: bit mask of QM_VDQCR_*** options, as per qm_dqrr_vdqcr_set()
+ *
+ * Attempts to lock access to the portal's VDQCR volatile dequeue functionality.
+ * The function will block and sleep if QMAN_VOLATILE_FLAG_WAIT is specified and
+ * the VDQCR is already in use, otherwise returns non-zero for failure. If
+ * QMAN_VOLATILE_FLAG_FINISH is specified, the function will only return once
+ * the VDQCR command has finished executing (ie. once the callback for the last
+ * DQRR entry resulting from the VDQCR command has been called). If not using
+ * the FINISH flag, completion can be determined either by detecting the
+ * presence of the QM_DQRR_STAT_UNSCHEDULED and QM_DQRR_STAT_DQCR_EXPIRED bits
+ * in the "stat" field of the "struct qm_dqrr_entry" passed to the FQ's dequeue
+ * callback, or by waiting for the QMAN_FQ_STATE_VDQCR bit to disappear from the
+ * "flags" retrieved from qman_fq_state().
+ */
+int qman_volatile_dequeue(struct qman_fq *fq, u32 flags, u32 vdqcr);
+
+/**
+ * qman_enqueue - Enqueue a frame to a frame queue
+ * @fq: the frame queue object to enqueue to
+ * @fd: a descriptor of the frame to be enqueued
+ * @flags: bit-mask of QMAN_ENQUEUE_FLAG_*** options
+ *
+ * Fills an entry in the EQCR of portal @qm to enqueue the frame described by
+ * @fd. The descriptor details are copied from @fd to the EQCR entry, the 'pid'
+ * field is ignored. The return value is non-zero on error, such as ring full
+ * (and FLAG_WAIT not specified), congestion avoidance (FLAG_WATCH_CGR
+ * specified), etc. If the ring is full and FLAG_WAIT is specified, this
+ * function will block. If FLAG_INTERRUPT is set, the EQCI bit of the portal
+ * interrupt will assert when Qman consumes the EQCR entry (subject to "status
+ * disable", "enable", and "inhibit" registers). If FLAG_DCA is set, Qman will
+ * perform an implied "discrete consumption acknowledgement" on the dequeue
+ * ring's (DQRR) entry, at the ring index specified by the FLAG_DCA_IDX(x)
+ * macro. (As an alternative to issuing explicit DCA actions on DQRR entries,
+ * this implicit DCA can delay the release of a "held active" frame queue
+ * corresponding to a DQRR entry until Qman consumes the EQCR entry - providing
+ * order-preservation semantics in packet-forwarding scenarios.) If FLAG_DCA is
+ * set, then FLAG_DCA_PARK can also be set to imply that the DQRR consumption
+ * acknowledgement should "park request" the "held active" frame queue. Ie.
+ * when the portal eventually releases that frame queue, it will be left in the
+ * Parked state rather than Tentatively Scheduled or Truly Scheduled. If the
+ * portal is watching congestion groups, the QMAN_ENQUEUE_FLAG_WATCH_CGR flag
+ * is requested, and the FQ is a member of a congestion group, then this
+ * function returns -EAGAIN if the congestion group is currently congested.
+ * Note, this does not eliminate ERNs, as the async interface means we can be
+ * sending enqueue commands to an un-congested FQ that becomes congested before
+ * the enqueue commands are processed, but it does minimise needless thrashing
+ * of an already busy hardware resource by throttling many of the to-be-dropped
+ * enqueues "at the source".
+ */
+int qman_enqueue(struct qman_fq *fq, const struct qm_fd *fd, u32 flags);
+
+typedef int (*qman_cb_precommit) (void *arg);
+/**
+ * qman_enqueue_precommit - Enqueue a frame to a frame queue and call cb
+ * @fq: the frame queue object to enqueue to
+ * @fd: a descriptor of the frame to be enqueued
+ * @flags: bit-mask of QMAN_ENQUEUE_FLAG_*** options
+ * @cb: user supplied callback function to invoke before writing commit verb.
+ * @cb_arg: callback function argument
+ *
+ * This is similar to qman_enqueue except that it will invoke a user supplied
+ * callback function just before writng the commit verb. This is useful
+ * when the user want to do something *just before* enqueuing the request and
+ * the enqueue can't fail.
+ */
+int qman_enqueue_precommit(struct qman_fq *fq, const struct qm_fd *fd,
+ u32 flags, qman_cb_precommit cb, void *cb_arg);
+
+/**
+ * qman_enqueue_orp - Enqueue a frame to a frame queue using an ORP
+ * @fq: the frame queue object to enqueue to
+ * @fd: a descriptor of the frame to be enqueued
+ * @flags: bit-mask of QMAN_ENQUEUE_FLAG_*** options
+ * @orp: the frame queue object used as an order restoration point.
+ * @orp_seqnum: the sequence number of this frame in the order restoration path
+ *
+ * Similar to qman_enqueue(), but with the addition of an Order Restoration
+ * Point (@orp) and corresponding sequence number (@orp_seqnum) for this
+ * enqueue operation to employ order restoration. Each frame queue object acts
+ * as an Order Definition Point (ODP) by providing each frame dequeued from it
+ * with an incrementing sequence number, this value is generally ignored unless
+ * that sequence of dequeued frames will need order restoration later. Each
+ * frame queue object also encapsulates an Order Restoration Point (ORP), which
+ * is a re-assembly context for re-ordering frames relative to their sequence
+ * numbers as they are enqueued. The ORP does not have to be within the frame
+ * queue that receives the enqueued frame, in fact it is usually the frame
+ * queue from which the frames were originally dequeued. For the purposes of
+ * order restoration, multiple frames (or "fragments") can be enqueued for a
+ * single sequence number by setting the QMAN_ENQUEUE_FLAG_NLIS flag for all
+ * enqueues except the final fragment of a given sequence number. Ordering
+ * between sequence numbers is guaranteed, even if fragments of different
+ * sequence numbers are interlaced with one another. Fragments of the same
+ * sequence number will retain the order in which they are enqueued. If no
+ * enqueue is to performed, QMAN_ENQUEUE_FLAG_HOLE indicates that the given
+ * sequence number is to be "skipped" by the ORP logic (eg. if a frame has been
+ * dropped from a sequence), or QMAN_ENQUEUE_FLAG_NESN indicates that the given
+ * sequence number should become the ORP's "Next Expected Sequence Number".
+ *
+ * Side note: a frame queue object can be used purely as an ORP, without
+ * carrying any frames at all. Care should be taken not to deallocate a frame
+ * queue object that is being actively used as an ORP, as a future allocation
+ * of the frame queue object may start using the internal ORP before the
+ * previous use has finished.
+ */
+int qman_enqueue_orp(struct qman_fq *fq, const struct qm_fd *fd, u32 flags,
+ struct qman_fq *orp, u16 orp_seqnum);
+
+/**
+ * qman_alloc_fqid_range - Allocate a contiguous range of FQIDs
+ * @result: is set by the API to the base FQID of the allocated range
+ * @count: the number of FQIDs required
+ * @align: required alignment of the allocated range
+ * @partial: non-zero if the API can return fewer than @count FQIDs
+ *
+ * Returns the number of frame queues allocated, or a negative error code. If
+ * @partial is non zero, the allocation request may return a smaller range of
+ * FQs than requested (though alignment will be as requested). If @partial is
+ * zero, the return value will either be 'count' or negative.
+ */
+int qman_alloc_fqid_range(u32 *result, u32 count, u32 align, int partial);
+static inline int qman_alloc_fqid(u32 *result)
+{
+ int ret = qman_alloc_fqid_range(result, 1, 0, 0);
+ return (ret > 0) ? 0 : ret;
+}
+
+/**
+ * qman_release_fqid_range - Release the specified range of frame queue IDs
+ * @fqid: the base FQID of the range to deallocate
+ * @count: the number of FQIDs in the range
+ *
+ * This function can also be used to seed the allocator with ranges of FQIDs
+ * that it can subsequently allocate from.
+ */
+void qman_release_fqid_range(u32 fqid, unsigned int count);
+static inline void qman_release_fqid(u32 fqid)
+{
+ qman_release_fqid_range(fqid, 1);
+}
+
+void qman_seed_fqid_range(u32 fqid, unsigned int count);
+
+
+int qman_shutdown_fq(u32 fqid);
+
+/**
+ * qman_reserve_fqid_range - Reserve the specified range of frame queue IDs
+ * @fqid: the base FQID of the range to deallocate
+ * @count: the number of FQIDs in the range
+ */
+int qman_reserve_fqid_range(u32 fqid, unsigned int count);
+static inline int qman_reserve_fqid(u32 fqid)
+{
+ return qman_reserve_fqid_range(fqid, 1);
+}
+
+ /* Pool-channel management */
+ /* ----------------------- */
+/**
+ * qman_alloc_pool_range - Allocate a contiguous range of pool-channel IDs
+ * @result: is set by the API to the base pool-channel ID of the allocated range
+ * @count: the number of pool-channel IDs required
+ * @align: required alignment of the allocated range
+ * @partial: non-zero if the API can return fewer than @count
+ *
+ * Returns the number of pool-channel IDs allocated, or a negative error code.
+ * If @partial is non zero, the allocation request may return a smaller range of
+ * than requested (though alignment will be as requested). If @partial is zero,
+ * the return value will either be 'count' or negative.
+ */
+int qman_alloc_pool_range(u32 *result, u32 count, u32 align, int partial);
+static inline int qman_alloc_pool(u32 *result)
+{
+ int ret = qman_alloc_pool_range(result, 1, 0, 0);
+ return (ret > 0) ? 0 : ret;
+}
+
+/**
+ * qman_release_pool_range - Release the specified range of pool-channel IDs
+ * @id: the base pool-channel ID of the range to deallocate
+ * @count: the number of pool-channel IDs in the range
+ */
+void qman_release_pool_range(u32 id, unsigned int count);
+static inline void qman_release_pool(u32 id)
+{
+ qman_release_pool_range(id, 1);
+}
+
+/**
+ * qman_reserve_pool_range - Reserve the specified range of pool-channel IDs
+ * @id: the base pool-channel ID of the range to reserve
+ * @count: the number of pool-channel IDs in the range
+ */
+int qman_reserve_pool_range(u32 id, unsigned int count);
+static inline int qman_reserve_pool(u32 id)
+{
+ return qman_reserve_pool_range(id, 1);
+}
+
+void qman_seed_pool_range(u32 id, unsigned int count);
+
+ /* CGR management */
+ /* -------------- */
+/**
+ * qman_create_cgr - Register a congestion group object
+ * @cgr: the 'cgr' object, with fields filled in
+ * @flags: QMAN_CGR_FLAG_* values
+ * @opts: optional state of CGR settings
+ *
+ * Registers this object to receiving congestion entry/exit callbacks on the
+ * portal affine to the cpu portal on which this API is executed. If opts is
+ * NULL then only the callback (cgr->cb) function is registered. If @flags
+ * contains QMAN_CGR_FLAG_USE_INIT, then an init hw command (which will reset
+ * any unspecified parameters) will be used rather than a modify hw hardware
+ * (which only modifies the specified parameters).
+ */
+int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
+ struct qm_mcc_initcgr *opts);
+
+/**
+ * qman_create_cgr_to_dcp - Register a congestion group object to DCP portal
+ * @cgr: the 'cgr' object, with fields filled in
+ * @flags: QMAN_CGR_FLAG_* values
+ * @dcp_portal: the DCP portal to which the cgr object is registered.
+ * @opts: optional state of CGR settings
+ *
+ */
+int qman_create_cgr_to_dcp(struct qman_cgr *cgr, u32 flags, u16 dcp_portal,
+ struct qm_mcc_initcgr *opts);
+
+/**
+ * qman_delete_cgr - Deregisters a congestion group object
+ * @cgr: the 'cgr' object to deregister
+ *
+ * "Unplugs" this CGR object from the portal affine to the cpu on which this API
+ * is executed. This must be excuted on the same affine portal on which it was
+ * created.
+ */
+int qman_delete_cgr(struct qman_cgr *cgr);
+
+/**
+ * qman_modify_cgr - Modify CGR fields
+ * @cgr: the 'cgr' object to modify
+ * @flags: QMAN_CGR_FLAG_* values
+ * @opts: the CGR-modification settings
+ *
+ * The @opts parameter comes from the low-level portal API, and can be NULL.
+ * Note that some fields and options within @opts may be ignored or overwritten
+ * by the driver, in particular the 'cgrid' field is ignored (this operation
+ * only affects the given CGR object). If @flags contains
+ * QMAN_CGR_FLAG_USE_INIT, then an init hw command (which will reset any
+ * unspecified parameters) will be used rather than a modify hw hardware (which
+ * only modifies the specified parameters).
+ */
+int qman_modify_cgr(struct qman_cgr *cgr, u32 flags,
+ struct qm_mcc_initcgr *opts);
+
+/**
+* qman_query_cgr - Queries CGR fields
+* @cgr: the 'cgr' object to query
+* @result: storage for the queried congestion group record
+*/
+int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *result);
+
+/**
+ * qman_alloc_cgrid_range - Allocate a contiguous range of CGR IDs
+ * @result: is set by the API to the base CGR ID of the allocated range
+ * @count: the number of CGR IDs required
+ * @align: required alignment of the allocated range
+ * @partial: non-zero if the API can return fewer than @count
+ *
+ * Returns the number of CGR IDs allocated, or a negative error code.
+ * If @partial is non zero, the allocation request may return a smaller range of
+ * than requested (though alignment will be as requested). If @partial is zero,
+ * the return value will either be 'count' or negative.
+ */
+int qman_alloc_cgrid_range(u32 *result, u32 count, u32 align, int partial);
+static inline int qman_alloc_cgrid(u32 *result)
+{
+ int ret = qman_alloc_cgrid_range(result, 1, 0, 0);
+ return (ret > 0) ? 0 : ret;
+}
+
+/**
+ * qman_release_cgrid_range - Release the specified range of CGR IDs
+ * @id: the base CGR ID of the range to deallocate
+ * @count: the number of CGR IDs in the range
+ */
+void qman_release_cgrid_range(u32 id, unsigned int count);
+static inline void qman_release_cgrid(u32 id)
+{
+ qman_release_cgrid_range(id, 1);
+}
+
+/**
+ * qman_reserve_cgrid_range - Reserve the specified range of CGR ID
+ * @id: the base CGR ID of the range to reserve
+ * @count: the number of CGR IDs in the range
+ */
+int qman_reserve_cgrid_range(u32 id, unsigned int count);
+static inline int qman_reserve_cgrid(u32 id)
+{
+ return qman_reserve_cgrid_range(id, 1);
+}
+
+void qman_seed_cgrid_range(u32 id, unsigned int count);
+
+
+ /* Helpers */
+ /* ------- */
+/**
+ * qman_poll_fq_for_init - Check if an FQ has been initialised from OOS
+ * @fqid: the FQID that will be initialised by other s/w
+ *
+ * In many situations, a FQID is provided for communication between s/w
+ * entities, and whilst the consumer is responsible for initialising and
+ * scheduling the FQ, the producer(s) generally create a wrapper FQ object using
+ * and only call qman_enqueue() (no FQ initialisation, scheduling, etc). Ie;
+ * qman_create_fq(..., QMAN_FQ_FLAG_NO_MODIFY, ...);
+ * However, data can not be enqueued to the FQ until it is initialised out of
+ * the OOS state - this function polls for that condition. It is particularly
+ * useful for users of IPC functions - each endpoint's Rx FQ is the other
+ * endpoint's Tx FQ, so each side can initialise and schedule their Rx FQ object
+ * and then use this API on the (NO_MODIFY) Tx FQ object in order to
+ * synchronise. The function returns zero for success, +1 if the FQ is still in
+ * the OOS state, or negative if there was an error.
+ */
+static inline int qman_poll_fq_for_init(struct qman_fq *fq)
+{
+ struct qm_mcr_queryfq_np np;
+ int err;
+ err = qman_query_fq_np(fq, &np);
+ if (err)
+ return err;
+ if ((np.state & QM_MCR_NP_STATE_MASK) == QM_MCR_NP_STATE_OOS)
+ return 1;
+ return 0;
+}
+
+/**
+ * qman_set_wpm - Set waterfall power management
+ *
+ * @wpm_enable: boolean, 1 = enable wpm, 0 = disable wpm.
+ *
+ * Return 0 for success, return -ENODEV if QMan misc_cfg register is not
+ * accessible.
+ */
+int qman_set_wpm(int wpm_enable);
+
+/**
+ * qman_get_swp - Query the waterfall power management setting
+ *
+ * @wpm_enable: boolean, 1 = enable wpm, 0 = disable wpm.
+ *
+ * Return 0 for success, return -ENODEV if QMan misc_cfg register is not
+ * accessible.
+ */
+int qman_get_wpm(int *wpm_enable);
+
+/* The below qman_p_***() variants might be called in a migration situation
+ * (e.g. cpu hotplug). They are used to continue accessing the portal that
+ * execution was affine to prior to migration.
+ * @qman_portal specifies which portal the APIs will use.
+*/
+const struct qman_portal_config *qman_p_get_portal_config(struct qman_portal
+ *p);
+int qman_p_irqsource_add(struct qman_portal *p, u32 bits);
+int qman_p_irqsource_remove(struct qman_portal *p, u32 bits);
+int qman_p_poll_dqrr(struct qman_portal *p, unsigned int limit);
+u32 qman_p_poll_slow(struct qman_portal *p);
+void qman_p_poll(struct qman_portal *p);
+void qman_p_stop_dequeues(struct qman_portal *p);
+void qman_p_start_dequeues(struct qman_portal *p);
+void qman_p_static_dequeue_add(struct qman_portal *p, u32 pools);
+void qman_p_static_dequeue_del(struct qman_portal *p, u32 pools);
+u32 qman_p_static_dequeue_get(struct qman_portal *p);
+void qman_p_dca(struct qman_portal *p, struct qm_dqrr_entry *dq,
+ int park_request);
+int qman_p_volatile_dequeue(struct qman_portal *p, struct qman_fq *fq,
+ u32 flags __maybe_unused, u32 vdqcr);
+int qman_p_enqueue(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags);
+int qman_p_enqueue_orp(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags,
+ struct qman_fq *orp, u16 orp_seqnum);
+int qman_p_enqueue_precommit(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_fd *fd, u32 flags,
+ qman_cb_precommit cb, void *cb_arg);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FSL_QMAN_H */
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 03/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA BMan
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
2015-02-16 15:46 ` [RFC v2 01/10] fsl_bman: Add drivers for the Freescale DPAA BMan Emil Medve
2015-02-16 15:46 ` [RFC v2 02/10] fsl_qman: Add drivers for the Freescale DPAA QMan Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 04/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA QMan Emil Medve
` (7 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I59de17c040cdd304f86306336fcf89f130f7db2d
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
arch/powerpc/Kconfig | 5 +++++
arch/powerpc/configs/mpc85xx_defconfig | 1 +
arch/powerpc/configs/mpc85xx_smp_defconfig | 1 +
arch/powerpc/platforms/85xx/Kconfig | 1 +
arch/powerpc/platforms/85xx/corenet_generic.c | 16 ++++++++++++++++
arch/powerpc/platforms/85xx/p1023_rdb.c | 14 ++++++++++++++
6 files changed, 38 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 7258b468..6ab5ad5 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -779,6 +779,11 @@ config FSL_GTM
help
Freescale General-purpose Timers support
+config HAS_FSL_QBMAN
+ bool "Datapath Acceleration Queue and Buffer management"
+ help
+ Datapath Acceleration Queue and Buffer management
+
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
bool
diff --git a/arch/powerpc/configs/mpc85xx_defconfig b/arch/powerpc/configs/mpc85xx_defconfig
index 8496389..aa7e41f 100644
--- a/arch/powerpc/configs/mpc85xx_defconfig
+++ b/arch/powerpc/configs/mpc85xx_defconfig
@@ -49,6 +49,7 @@ CONFIG_HIGHMEM=y
CONFIG_BINFMT_MISC=m
CONFIG_MATH_EMULATION=y
CONFIG_FORCE_MAX_ZONEORDER=12
+CONFIG_HAS_FSL_QBMAN=y
CONFIG_PCI=y
CONFIG_PCIEPORTBUS=y
# CONFIG_PCIEASPM is not set
diff --git a/arch/powerpc/configs/mpc85xx_smp_defconfig b/arch/powerpc/configs/mpc85xx_smp_defconfig
index bf88caf..82feda1 100644
--- a/arch/powerpc/configs/mpc85xx_smp_defconfig
+++ b/arch/powerpc/configs/mpc85xx_smp_defconfig
@@ -50,6 +50,7 @@ CONFIG_HIGHMEM=y
CONFIG_BINFMT_MISC=m
CONFIG_MATH_EMULATION=y
CONFIG_FORCE_MAX_ZONEORDER=12
+CONFIG_HAS_FSL_QBMAN=y
CONFIG_PCI=y
CONFIG_PCI_MSI=y
CONFIG_RAPIDIO=y
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index dbdd5fa..51e9a7b 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -276,6 +276,7 @@ config CORENET_GENERIC
select GPIO_MPC8XXX
select HAS_RAPIDIO
select PPC_EPAPR_HV_PIC
+ select HAS_FSL_QBMAN
help
This option enables support for the FSL CoreNet based boards.
For 32bit kernel, the following boards are supported:
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c
index 63bef30..74faab7 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -197,6 +197,21 @@ static int __init corenet_generic_probe(void)
return 0;
}
+/* Early setup is required for large chunks of contiguous (and coarsely-aligned)
+ * memory. The following shoe-horns Bman "init_early" calls into the
+ * platform setup to let them parse their CCSR nodes early on.
+ */
+#ifdef CONFIG_FSL_BMAN_CONFIG
+void __init bman_init_early(void);
+#endif
+
+__init void corenet_ds_init_early(void)
+{
+#ifdef CONFIG_FSL_BMAN_CONFIG
+ bman_init_early();
+#endif
+}
+
define_machine(corenet_generic) {
.name = "CoreNet Generic",
.probe = corenet_generic_probe,
@@ -215,6 +230,7 @@ define_machine(corenet_generic) {
#else
.power_save = e500_idle,
#endif
+ .init_early = corenet_ds_init_early,
};
machine_arch_initcall(corenet_generic, corenet_gen_publish_devices);
diff --git a/arch/powerpc/platforms/85xx/p1023_rdb.c b/arch/powerpc/platforms/85xx/p1023_rdb.c
index d5b7509..624d3d6 100644
--- a/arch/powerpc/platforms/85xx/p1023_rdb.c
+++ b/arch/powerpc/platforms/85xx/p1023_rdb.c
@@ -103,7 +103,20 @@ static int __init p1023_rdb_probe(void)
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,P1023RDB");
+}
+
+/* Early setup is required for large chunks of contiguous (and coarsely-aligned)
+ * memory. The following shoe-horns Bman "init_early" calls into the
+ * platform setup to let them parse their CCSR nodes early on. */
+#ifdef CONFIG_FSL_BMAN_CONFIG
+void __init bman_init_early(void);
+#endif
+static __init void p1023_rdb_init_early(void)
+{
+#ifdef CONFIG_FSL_BMAN_CONFIG
+ bman_init_early();
+#endif
}
define_machine(p1023_rdb) {
@@ -119,4 +132,5 @@ define_machine(p1023_rdb) {
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
+ .init_early = p1023_rdb_init_early,
};
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 04/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA QMan
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (2 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 03/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA BMan Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 05/10] fsl_bman: Add self-tester Emil Medve
` (6 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I59de17c040cdd304f86306336fcf89f130f7db2d
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
arch/powerpc/platforms/85xx/corenet_generic.c | 8 +++++++-
arch/powerpc/platforms/85xx/p1023_rdb.c | 8 +++++++-
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c
index 74faab7..20b8f9a 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -198,15 +198,21 @@ static int __init corenet_generic_probe(void)
}
/* Early setup is required for large chunks of contiguous (and coarsely-aligned)
- * memory. The following shoe-horns Bman "init_early" calls into the
+ * memory. The following shoe-horns Q/Bman "init_early" calls into the
* platform setup to let them parse their CCSR nodes early on.
*/
+#ifdef CONFIG_FSL_QMAN_CONFIG
+void __init qman_init_early(void);
+#endif
#ifdef CONFIG_FSL_BMAN_CONFIG
void __init bman_init_early(void);
#endif
__init void corenet_ds_init_early(void)
{
+#ifdef CONFIG_FSL_QMAN_CONFIG
+ qman_init_early();
+#endif
#ifdef CONFIG_FSL_BMAN_CONFIG
bman_init_early();
#endif
diff --git a/arch/powerpc/platforms/85xx/p1023_rdb.c b/arch/powerpc/platforms/85xx/p1023_rdb.c
index 624d3d6..dc69801 100644
--- a/arch/powerpc/platforms/85xx/p1023_rdb.c
+++ b/arch/powerpc/platforms/85xx/p1023_rdb.c
@@ -106,14 +106,20 @@ static int __init p1023_rdb_probe(void)
}
/* Early setup is required for large chunks of contiguous (and coarsely-aligned)
- * memory. The following shoe-horns Bman "init_early" calls into the
+ * memory. The following shoe-horns Q/Bman "init_early" calls into the
* platform setup to let them parse their CCSR nodes early on. */
+#ifdef CONFIG_FSL_QMAN_CONFIG
+void __init qman_init_early(void);
+#endif
#ifdef CONFIG_FSL_BMAN_CONFIG
void __init bman_init_early(void);
#endif
static __init void p1023_rdb_init_early(void)
{
+#ifdef CONFIG_FSL_QMAN_CONFIG
+ qman_init_early();
+#endif
#ifdef CONFIG_FSL_BMAN_CONFIG
bman_init_early();
#endif
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 05/10] fsl_bman: Add self-tester
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (3 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 04/10] powerpc/mpc85xx: Add platform support for the Freescale DPAA QMan Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 06/10] fsl_qman: " Emil Medve
` (5 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: If1b44bb013addc1e855c73a4e6ff74bc8b6e4829
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/freescale/Kconfig | 26 ++++
drivers/soc/freescale/Makefile | 8 +-
drivers/soc/freescale/bman.c | 16 +--
drivers/soc/freescale/bman_api.c | 14 +--
drivers/soc/freescale/bman_portal.c | 18 +--
drivers/soc/freescale/bman_priv.h | 2 +-
drivers/soc/freescale/bman_test.c | 56 +++++++++
drivers/soc/freescale/bman_test.h | 44 +++++++
drivers/soc/freescale/bman_test_api.c | 181 ++++++++++++++++++++++++++++
drivers/soc/freescale/bman_test_thresh.c | 196 +++++++++++++++++++++++++++++++
drivers/soc/freescale/dpaa_alloc.c | 2 +-
drivers/soc/freescale/dpaa_sys.h | 2 +-
drivers/soc/freescale/qman.c | 26 ++--
drivers/soc/freescale/qman_api.c | 18 +--
drivers/soc/freescale/qman_portal.c | 18 +--
drivers/soc/freescale/qman_priv.h | 2 +-
include/linux/fsl_bman.h | 10 +-
include/linux/fsl_qman.h | 18 +--
18 files changed, 582 insertions(+), 75 deletions(-)
create mode 100644 drivers/soc/freescale/bman_test.c
create mode 100644 drivers/soc/freescale/bman_test.h
create mode 100644 drivers/soc/freescale/bman_test_api.c
create mode 100644 drivers/soc/freescale/bman_test_thresh.c
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
index 9329c5c..6786b94 100644
--- a/drivers/soc/freescale/Kconfig
+++ b/drivers/soc/freescale/Kconfig
@@ -47,6 +47,32 @@ config FSL_BMAN_CONFIG
linux image is running as a guest OS under the hypervisor, only one
guest OS ("the control plane") needs this option.
+config FSL_BMAN_TEST
+ tristate "BMan self-tests"
+ default n
+ ---help---
+ This option compiles self-test code for BMan.
+
+config FSL_BMAN_TEST_HIGH
+ bool "BMan high-level self-test"
+ depends on FSL_BMAN_TEST
+ default y
+ ---help---
+ This requires the presence of cpu-affine portals, and performs
+ high-level API testing with them (whichever portal(s) are affine to
+ the cpu(s) the test executes on).
+
+config FSL_BMAN_TEST_THRESH
+ bool "BMan threshold test"
+ depends on FSL_BMAN_TEST
+ default y
+ ---help---
+ Multi-threaded (SMP) test of BMan pool depletion. A pool is seeded
+ before multiple threads (one per cpu) create pool objects to track
+ depletion state changes. The pool is then drained to empty by a
+ "drainer" thread, and the other threads that they observe exactly
+ the depletion state changes that are expected.
+
endif # FSL_BMAN
config FSL_QMAN
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
index 69be592..09f31b0 100644
--- a/drivers/soc/freescale/Makefile
+++ b/drivers/soc/freescale/Makefile
@@ -2,10 +2,14 @@
obj-$(CONFIG_FSL_DPA) += dpaa_alloc.o
obj-$(CONFIG_HAS_FSL_QBMAN) += qbman_driver.o
-# Bman
+# BMan
obj-$(CONFIG_FSL_BMAN) += bman_api.o
obj-$(CONFIG_FSL_BMAN_CONFIG) += bman.o bman_portal.o
+obj-$(CONFIG_FSL_BMAN_TEST) += bman_tester.o
+bman_tester-y = bman_test.o
+bman_tester-$(CONFIG_FSL_BMAN_TEST_API) += bman_test_api.o
+bman_tester-$(CONFIG_FSL_BMAN_TEST_THRESH) += bman_test_thresh.o
-# Qman
+# QMan
obj-$(CONFIG_FSL_QMAN) += qman_api.o qman_utils.o
obj-$(CONFIG_FSL_QMAN_CONFIG) += qman.o qman_portal.o
diff --git a/drivers/soc/freescale/bman.c b/drivers/soc/freescale/bman.c
index fba6ae0..66986f2 100644
--- a/drivers/soc/freescale/bman.c
+++ b/drivers/soc/freescale/bman.c
@@ -275,7 +275,7 @@ static int __init fsl_bman_init(struct device_node *node)
BUG_ON(!bm);
bm_node = node;
bm_get_version(bm, &id, &major, &minor);
- pr_info("Bman ver:%04x,%02x,%02x\n", id, major, minor);
+ pr_info("BMan ver:%04x,%02x,%02x\n", id, major, minor);
if ((major == 1) && (minor == 0)) {
bman_ip_rev = BMAN_REV10;
bman_pool_max = 64;
@@ -286,7 +286,7 @@ static int __init fsl_bman_init(struct device_node *node)
bman_ip_rev = BMAN_REV21;
bman_pool_max = 64;
} else {
- pr_warn("unknown Bman version, default to rev1.0\n");
+ pr_warn("unknown BMan version, default to rev1.0\n");
}
return 0;
@@ -330,7 +330,7 @@ static void log_edata_bits(u32 bit_count)
{
u32 i, j, mask = 0xffffffff;
- pr_warn("Bman ErrInt, EDATA:\n");
+ pr_warn("BMan ErrInt, EDATA:\n");
i = bit_count/32;
if (bit_count%32) {
i++;
@@ -351,13 +351,13 @@ static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
ecir_val.ecir_raw = bm_in(ECIR);
/* Is portal info valid */
if (ecsr_val & PORTAL_ECSR_ERR) {
- pr_warn("Bman ErrInt: SWP id %d, numb %d, pid %d\n",
+ pr_warn("BMan ErrInt: SWP id %d, numb %d, pid %d\n",
ecir_val.info.portal_num, ecir_val.info.numb,
ecir_val.info.pid);
}
if (ecsr_val & (BM_EIRQ_SBEI|BM_EIRQ_MBEI)) {
eadr_val.eadr_raw = bm_in(EADR);
- pr_warn("Bman ErrInt: EADR Memory: %s, 0x%x\n",
+ pr_warn("BMan ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[eadr_val.info.memid].txt,
error_mdata[eadr_val.info.memid].addr_mask
& eadr_val.info.eadr);
@@ -365,7 +365,7 @@ static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
}
}
-/* Bman interrupt handler */
+/* BMan interrupt handler */
static irqreturn_t bman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
@@ -379,14 +379,14 @@ static irqreturn_t bman_isr(int irq, void *ptr)
return IRQ_NONE;
for (i = 0; i < BMAN_HWE_COUNT; i++) {
if (bman_hwerr_txts[i].mask & isr_mask) {
- pr_warn("Bman ErrInt: %s\n", bman_hwerr_txts[i].txt);
+ pr_warn("BMan ErrInt: %s\n", bman_hwerr_txts[i].txt);
if (bman_hwerr_txts[i].mask & ecsr_val) {
log_additional_error_info(isr_mask, ecsr_val);
/* Re-arm error capture registers */
bm_out(ECSR, ecsr_val);
}
if (bman_hwerr_txts[i].mask & BMAN_ERRS_TO_UNENABLE) {
- pr_devel("Bman un-enabling error 0x%x\n",
+ pr_devel("BMan un-enabling error 0x%x\n",
bman_hwerr_txts[i].mask);
ier_val &= ~bman_hwerr_txts[i].mask;
bm_err_isr_enable_write(bm, ier_val);
diff --git a/drivers/soc/freescale/bman_api.c b/drivers/soc/freescale/bman_api.c
index ab16f16..7bb4840 100644
--- a/drivers/soc/freescale/bman_api.c
+++ b/drivers/soc/freescale/bman_api.c
@@ -66,8 +66,8 @@ struct bman_portal {
};
/* For an explanation of the locking, redirection, or affine-portal logic,
- * please consult the Qman driver for details. This is the same, only simpler
- * (no fiddly Qman-specific bits.) */
+ * please consult the QMan driver for details. This is the same, only simpler
+ * (no fiddly QMan-specific bits.) */
#ifdef CONFIG_FSL_DPA_PORTAL_SHARE
#define PORTAL_IRQ_LOCK(p, irqflags) \
do { \
@@ -118,7 +118,7 @@ static inline struct bman_portal *get_poll_portal(void)
#define put_poll_portal()
/* GOTCHA: this object type refers to a pool, it isn't *the* pool. There may be
- * more than one such object per Bman buffer pool, eg. if different users of the
+ * more than one such object per BMan buffer pool, eg. if different users of the
* pool are operating via different portals. */
struct bman_pool {
struct bman_pool_params params;
@@ -219,15 +219,15 @@ struct bman_portal *bman_create_portal(
__p->addr.addr_ce = config->addr_virt[DPA_PORTAL_CE];
__p->addr.addr_ci = config->addr_virt[DPA_PORTAL_CI];
if (bm_rcr_init(__p, bm_rcr_pvb, bm_rcr_cce)) {
- pr_err("Bman RCR initialisation failed\n");
+ pr_err("BMan RCR initialisation failed\n");
goto fail_rcr;
}
if (bm_mc_init(__p)) {
- pr_err("Bman MC initialisation failed\n");
+ pr_err("BMan MC initialisation failed\n");
goto fail_mc;
}
if (bm_isr_init(__p)) {
- pr_err("Bman ISR initialisation failed\n");
+ pr_err("BMan ISR initialisation failed\n");
goto fail_isr;
}
portal->pools = kmalloc(2 * sizeof(*pools), GFP_KERNEL);
@@ -273,7 +273,7 @@ struct bman_portal *bman_create_portal(
/* Need RCR to be empty before continuing */
ret = bm_rcr_get_fill(__p);
if (ret) {
- pr_err("Bman RCR unclean\n");
+ pr_err("BMan RCR unclean\n");
goto fail_rcr_empty;
}
/* Success */
diff --git a/drivers/soc/freescale/bman_portal.c b/drivers/soc/freescale/bman_portal.c
index 1c67065..a91081c 100644
--- a/drivers/soc/freescale/bman_portal.c
+++ b/drivers/soc/freescale/bman_portal.c
@@ -134,12 +134,12 @@ static struct bman_portal * __init init_pcfg(struct bm_portal_config *pcfg)
#ifdef CONFIG_FSL_DPA_PIRQ_SLOW
bman_p_irqsource_add(p, BM_PIRQ_RCRI | BM_PIRQ_BSCN);
#endif
- pr_info("Bman portal %s initialised, cpu %d\n",
+ pr_info("BMan portal %s initialised, cpu %d\n",
pcfg->public_cfg.is_shared ? "(shared) " : "",
pcfg->public_cfg.cpu);
affine_bportals[pcfg->public_cfg.cpu] = p;
} else
- pr_crit("Bman portal failure on cpu %d\n",
+ pr_crit("BMan portal failure on cpu %d\n",
pcfg->public_cfg.cpu);
return p;
@@ -151,9 +151,9 @@ static void __init init_slave(int cpu)
p = bman_create_affine_slave(shared_portals[shared_portals_idx++], cpu);
if (!p)
- pr_err("Bman slave portal failure on cpu %d\n", cpu);
+ pr_err("BMan slave portal failure on cpu %d\n", cpu);
else
- pr_info("Bman portal %s initialised, cpu %d\n", "(slave) ", cpu);
+ pr_info("BMan portal %s initialised, cpu %d\n", "(slave) ", cpu);
if (shared_portals_idx >= num_shared_portals)
shared_portals_idx = 0;
affine_bportals[cpu] = p;
@@ -192,7 +192,7 @@ static void bman_offline_cpu(unsigned int cpu)
}
}
-/* Initialise the Bman driver. The meat of this function deals with portals. The
+/* Initialise the BMan driver. The meat of this function deals with portals. The
* following describes the flow of portal-handling, the code "steps" refer to
* this description;
* 1. Portal configs are parsed from the device-tree into 'unused_pcfgs', with
@@ -231,12 +231,12 @@ int __init bman_init(void)
int cpu;
struct cpumask offline_cpus;
- /* Initialise the Bman (CCSR) device */
+ /* Initialise the BMan (CCSR) device */
for_each_compatible_node(dn, NULL, "fsl,bman") {
if (!bman_init_ccsr(dn))
- pr_info("Bman err interrupt handler present\n");
+ pr_info("BMan err interrupt handler present\n");
else
- pr_err("Bman CCSR setup failed\n");
+ pr_err("BMan CCSR setup failed\n");
}
/* Step 1. See comments at the beginning of the file. */
for_each_compatible_node(dn, NULL, "fsl,bman-portal") {
@@ -321,7 +321,7 @@ int __init bman_init(void)
if (!cpumask_empty(&slave_cpus))
for_each_cpu(cpu, &slave_cpus)
init_slave(cpu);
- pr_info("Bman portals initialised\n");
+ pr_info("BMan portals initialised\n");
cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask);
for_each_cpu(cpu, &offline_cpus)
bman_offline_cpu(cpu);
diff --git a/drivers/soc/freescale/bman_priv.h b/drivers/soc/freescale/bman_priv.h
index a183cc6..842ec37 100644
--- a/drivers/soc/freescale/bman_priv.h
+++ b/drivers/soc/freescale/bman_priv.h
@@ -131,7 +131,7 @@ int bman_have_ccsr(void);
#ifdef CONFIG_FSL_BMAN_CONFIG
/* Set depletion thresholds associated with a buffer pool. Requires that the
- * operating system have access to Bman CCSR (ie. compiled in support and
+ * operating system have access to BMan CCSR (ie. compiled in support and
* run-time access courtesy of the device-tree). */
int bm_pool_set(u32 bpid, const u32 *thresholds);
#define BM_POOL_THRESH_SW_ENTER 0
diff --git a/drivers/soc/freescale/bman_test.c b/drivers/soc/freescale/bman_test.c
new file mode 100644
index 0000000..350f2f8
--- /dev/null
+++ b/drivers/soc/freescale/bman_test.c
@@ -0,0 +1,56 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman_test.h"
+
+MODULE_AUTHOR("Geoff Thorpe");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("BMan testing");
+
+static int test_init(void)
+{
+#ifdef CONFIG_FSL_BMAN_TEST_HIGH
+ int loop = 1;
+ while (loop--)
+ bman_test_api();
+#endif
+#ifdef CONFIG_FSL_BMAN_TEST_THRESH
+ bman_test_thresh();
+#endif
+ return 0;
+}
+
+static void test_exit(void)
+{
+}
+
+module_init(test_init);
+module_exit(test_exit);
diff --git a/drivers/soc/freescale/bman_test.h b/drivers/soc/freescale/bman_test.h
new file mode 100644
index 0000000..a0f5147
--- /dev/null
+++ b/drivers/soc/freescale/bman_test.h
@@ -0,0 +1,44 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+
+#include <linux/fsl_bman.h>
+
+void bman_test_api(void);
+void bman_test_thresh(void);
diff --git a/drivers/soc/freescale/bman_test_api.c b/drivers/soc/freescale/bman_test_api.c
new file mode 100644
index 0000000..467cde7
--- /dev/null
+++ b/drivers/soc/freescale/bman_test_api.c
@@ -0,0 +1,181 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman_test.h"
+#include "bman_priv.h"
+
+/*************/
+/* constants */
+/*************/
+
+#define PORTAL_OPAQUE ((void *)0xf00dbeef)
+#define POOL_OPAQUE ((void *)0xdeadabba)
+#define NUM_BUFS 93
+#define LOOPS 3
+#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU
+
+/***************/
+/* global vars */
+/***************/
+
+static struct bman_pool *pool;
+static int depleted;
+static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned;
+static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned;
+static int bufs_received;
+
+/* Predeclare the callback so we can instantiate pool parameters */
+static void depletion_cb(struct bman_portal *, struct bman_pool *, void *, int);
+
+/**********************/
+/* internal functions */
+/**********************/
+
+static void bufs_init(void)
+{
+ int i;
+ for (i = 0; i < NUM_BUFS; i++)
+ bm_buffer_set64(&bufs_in[i], 0xfedc01234567LLU * i);
+ bufs_received = 0;
+}
+
+static inline int bufs_cmp(const struct bm_buffer *a, const struct bm_buffer *b)
+{
+ if ((bman_ip_rev == BMAN_REV20) || (bman_ip_rev == BMAN_REV21)) {
+
+ /* On SoCs with BMan revison 2.0, BMan only respects the 40
+ * LS-bits of buffer addresses, masking off the upper 8-bits on
+ * release commands. The API provides for 48-bit addresses
+ * because some SoCs support all 48-bits. When generating
+ * garbage addresses for testing, we either need to zero the
+ * upper 8-bits when releasing to BMan (otherwise we'll be
+ * disappointed when the buffers we acquire back from BMan
+ * don't match), or we need to mask the upper 8-bits off when
+ * comparing. We do the latter.
+ */
+ if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK)
+ < (bm_buffer_get64(b) & BMAN_TOKEN_MASK))
+ return -1;
+ if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK)
+ > (bm_buffer_get64(b) & BMAN_TOKEN_MASK))
+ return 1;
+ } else {
+ if (bm_buffer_get64(a) < bm_buffer_get64(b))
+ return -1;
+ if (bm_buffer_get64(a) > bm_buffer_get64(b))
+ return 1;
+ }
+
+ return 0;
+}
+
+static void bufs_confirm(void)
+{
+ int i, j;
+ for (i = 0; i < NUM_BUFS; i++) {
+ int matches = 0;
+ for (j = 0; j < NUM_BUFS; j++)
+ if (!bufs_cmp(&bufs_in[i], &bufs_out[j]))
+ matches++;
+ BUG_ON(matches != 1);
+ }
+}
+
+/********/
+/* test */
+/********/
+
+static void depletion_cb(struct bman_portal *__portal, struct bman_pool *__pool,
+ void *pool_ctx, int __depleted)
+{
+ BUG_ON(__pool != pool);
+ BUG_ON(pool_ctx != POOL_OPAQUE);
+ depleted = __depleted;
+}
+
+void bman_test_api(void)
+{
+ struct bman_pool_params pparams = {
+ .flags = BMAN_POOL_FLAG_DEPLETION | BMAN_POOL_FLAG_DYNAMIC_BPID,
+ .cb = depletion_cb,
+ .cb_ctx = POOL_OPAQUE,
+ };
+ int i, loops = LOOPS;
+
+ bufs_init();
+
+ pr_info("BMAN: --- starting high-level test ---\n");
+
+ pool = bman_new_pool(&pparams);
+ BUG_ON(!pool);
+
+ /*******************/
+ /* Release buffers */
+ /*******************/
+do_loop:
+ i = 0;
+ while (i < NUM_BUFS) {
+ u32 flags = BMAN_RELEASE_FLAG_WAIT;
+ int num = 8;
+ if ((i + num) > NUM_BUFS)
+ num = NUM_BUFS - i;
+ if ((i + num) == NUM_BUFS)
+ flags |= BMAN_RELEASE_FLAG_WAIT_SYNC;
+ if (bman_release(pool, bufs_in + i, num, flags))
+ panic("bman_release() failed\n");
+ i += num;
+ }
+
+ /*******************/
+ /* Acquire buffers */
+ /*******************/
+ while (i > 0) {
+ int tmp, num = 8;
+ if (num > i)
+ num = i;
+ tmp = bman_acquire(pool, bufs_out + i - num, num, 0);
+ BUG_ON(tmp != num);
+ i -= num;
+ }
+ i = bman_acquire(pool, NULL, 1, 0);
+ BUG_ON(i > 0);
+
+ bufs_confirm();
+
+ if (--loops)
+ goto do_loop;
+
+ /************/
+ /* Clean up */
+ /************/
+ bman_free_pool(pool);
+ pr_info("BMAN: --- finished high-level test ---\n");
+}
diff --git a/drivers/soc/freescale/bman_test_thresh.c b/drivers/soc/freescale/bman_test_thresh.c
new file mode 100644
index 0000000..c03db24
--- /dev/null
+++ b/drivers/soc/freescale/bman_test_thresh.c
@@ -0,0 +1,196 @@
+/* Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "bman_test.h"
+
+/* Test constants */
+#define TEST_NUMBUFS 129728
+#define TEST_EXIT 129536
+#define TEST_ENTRY 129024
+
+struct affine_test_data {
+ struct task_struct *t;
+ int cpu;
+ int expect_affinity;
+ int drain;
+ int num_enter;
+ int num_exit;
+ struct list_head node;
+ struct completion wakethread;
+ struct completion wakeparent;
+};
+
+static void cb_depletion(struct bman_portal *portal,
+ struct bman_pool *pool,
+ void *opaque,
+ int depleted)
+{
+ struct affine_test_data *data = opaque;
+ int c = smp_processor_id();
+ pr_info("cb_depletion: bpid=%d, depleted=%d, cpu=%d, original=%d\n",
+ bman_get_params(pool)->bpid, !!depleted, c, data->cpu);
+ /* We should be executing on the CPU of the thread that owns the pool if
+ * and that CPU has an affine portal (ie. it isn't slaved). */
+ BUG_ON((c != data->cpu) && data->expect_affinity);
+ BUG_ON((c == data->cpu) && !data->expect_affinity);
+ if (depleted)
+ data->num_enter++;
+ else
+ data->num_exit++;
+}
+
+/* Params used to set up a pool, this also dynamically allocates a BPID */
+static const struct bman_pool_params params_nocb = {
+ .flags = BMAN_POOL_FLAG_DYNAMIC_BPID | BMAN_POOL_FLAG_THRESH,
+ .thresholds = { TEST_ENTRY, TEST_EXIT, 0, 0 }
+};
+
+/* Params used to set up each cpu's pool with callbacks enabled */
+static struct bman_pool_params params_cb = {
+ .bpid = 0, /* will be replaced to match pool_nocb */
+ .flags = BMAN_POOL_FLAG_DEPLETION,
+ .cb = cb_depletion
+};
+
+static struct bman_pool *pool_nocb;
+static LIST_HEAD(threads);
+
+static int affine_test(void *__data)
+{
+ struct bman_pool *pool;
+ struct affine_test_data *data = __data;
+ struct bman_pool_params my_params = params_cb;
+
+ pr_info("thread %d: starting\n", data->cpu);
+ /* create the pool */
+ my_params.cb_ctx = data;
+ pool = bman_new_pool(&my_params);
+ BUG_ON(!pool);
+ complete(&data->wakeparent);
+ wait_for_completion(&data->wakethread);
+ init_completion(&data->wakethread);
+
+ /* if we're the drainer, we get signalled for that */
+ if (data->drain) {
+ struct bm_buffer buf;
+ int ret;
+ pr_info("thread %d: draining...\n", data->cpu);
+ do {
+ ret = bman_acquire(pool, &buf, 1, 0);
+ } while (ret > 0);
+ pr_info("thread %d: draining done.\n", data->cpu);
+ complete(&data->wakeparent);
+ wait_for_completion(&data->wakethread);
+ init_completion(&data->wakethread);
+ }
+
+ /* cleanup */
+ bman_free_pool(pool);
+ while (!kthread_should_stop())
+ cpu_relax();
+ pr_info("thread %d: exiting\n", data->cpu);
+ return 0;
+}
+
+static struct affine_test_data *start_affine_test(int cpu, int drain)
+{
+ struct affine_test_data *data = kmalloc(sizeof(*data), GFP_KERNEL);
+
+ if (!data)
+ return NULL;
+ data->cpu = cpu;
+ data->expect_affinity = cpumask_test_cpu(cpu, bman_affine_cpus());
+ data->drain = drain;
+ data->num_enter = 0;
+ data->num_exit = 0;
+ init_completion(&data->wakethread);
+ init_completion(&data->wakeparent);
+ list_add_tail(&data->node, &threads);
+ data->t = kthread_create(affine_test, data, "threshtest%d", cpu);
+ BUG_ON(IS_ERR(data->t));
+ kthread_bind(data->t, cpu);
+ wake_up_process(data->t);
+ return data;
+}
+
+void bman_test_thresh(void)
+{
+ int loop = TEST_NUMBUFS;
+ int ret, num_cpus = 0;
+ struct affine_test_data *data, *drainer = NULL;
+
+ pr_info("bman_test_thresh: start\n");
+
+ /* allocate a BPID and seed it */
+ pool_nocb = bman_new_pool(¶ms_nocb);
+ BUG_ON(!pool_nocb);
+ while (loop--) {
+ struct bm_buffer buf;
+ bm_buffer_set64(&buf, 0x0badbeef + loop);
+ ret = bman_release(pool_nocb, &buf, 1,
+ BMAN_RELEASE_FLAG_WAIT);
+ BUG_ON(ret);
+ }
+ while (!bman_rcr_is_empty())
+ cpu_relax();
+ pr_info("bman_test_thresh: buffers are in\n");
+
+ /* create threads and wait for them to create pools */
+ params_cb.bpid = bman_get_params(pool_nocb)->bpid;
+ for_each_cpu(loop, cpu_online_mask) {
+ data = start_affine_test(loop, drainer ? 0 : 1);
+ BUG_ON(!data);
+ if (!drainer)
+ drainer = data;
+ num_cpus++;
+ wait_for_completion(&data->wakeparent);
+ }
+
+ /* signal the drainer to start draining */
+ complete(&drainer->wakethread);
+ wait_for_completion(&drainer->wakeparent);
+ init_completion(&drainer->wakeparent);
+
+ /* tear down */
+ list_for_each_entry_safe(data, drainer, &threads, node) {
+ complete(&data->wakethread);
+ ret = kthread_stop(data->t);
+ BUG_ON(ret);
+ list_del(&data->node);
+ /* check that we get the expected callbacks (and no others) */
+ BUG_ON(data->num_enter != 1);
+ BUG_ON(data->num_exit != 0);
+ kfree(data);
+ }
+ bman_free_pool(pool_nocb);
+
+ pr_info("bman_test_thresh: done\n");
+}
diff --git a/drivers/soc/freescale/dpaa_alloc.c b/drivers/soc/freescale/dpaa_alloc.c
index 0215477..88a4786 100644
--- a/drivers/soc/freescale/dpaa_alloc.c
+++ b/drivers/soc/freescale/dpaa_alloc.c
@@ -365,7 +365,7 @@ static u32 release_id_range(struct dpa_alloc *alloc, u32 id, u32 count,
return total_invalid;
}
-/* Bman APIs are front-ends to the common code */
+/* BMan APIs are front-ends to the common code */
#ifdef CONFIG_FSL_BMAN
static DECLARE_DPA_ALLOC(bpalloc); /* BPID allocator */
diff --git a/drivers/soc/freescale/dpaa_sys.h b/drivers/soc/freescale/dpaa_sys.h
index 86b280c..6631b2a 100644
--- a/drivers/soc/freescale/dpaa_sys.h
+++ b/drivers/soc/freescale/dpaa_sys.h
@@ -240,7 +240,7 @@ static inline type *name##_find(struct dpa_rbtree *tree, u32 val) \
/* Bootargs */
/************/
-/* Qman has "qportals=" and Bman has "bportals=", they use the same syntax
+/* QMan has "qportals=" and BMan has "bportals=", they use the same syntax
* though; a comma-separated list of items, each item being a cpu index and/or a
* range of cpu indices, and each item optionally be prefixed by "s" to indicate
* that the portal associated with that cpu should be shared. See bman_driver.c
diff --git a/drivers/soc/freescale/qman.c b/drivers/soc/freescale/qman.c
index 3d7d02e..f791884 100644
--- a/drivers/soc/freescale/qman.c
+++ b/drivers/soc/freescale/qman.c
@@ -259,7 +259,7 @@ static const struct qman_error_info_mdata error_mdata[] = {
/*
* TODO: unimplemented registers
*
- * Keeping a list here of Qman registers I have not yet covered;
+ * Keeping a list here of QMan registers I have not yet covered;
* QCSP_DD_IHRSR, QCSP_DD_IHRFR, QCSP_DD_HASR,
* DCP_DD_IHRSR, DCP_DD_IHRFR, DCP_DD_HASR, CM_CFG,
* QMAN_EECC, QMAN_SBET, QMAN_EINJ, QMAN_SBEC0-12
@@ -476,7 +476,7 @@ static int __init fsl_qman_init(struct device_node *node)
qm = qm_create(regs);
qm_node = node;
qm_get_version(qm, &id, &major, &minor);
- pr_info("Qman ver:%04x,%02x,%02x\n", id, major, minor);
+ pr_info("QMan ver:%04x,%02x,%02x\n", id, major, minor);
if (!qman_ip_rev) {
if ((major == 1) && (minor == 0)) {
pr_err("QMAN rev1.0 on P4080 rev1 is not supported!\n");
@@ -493,7 +493,7 @@ static int __init fsl_qman_init(struct device_node *node)
else if ((major == 3) && (minor == 1))
qman_ip_rev = QMAN_REV31;
else {
- pr_warn("unknown Qman version, default to rev1.1\n");
+ pr_warn("unknown QMan version, default to rev1.1\n");
qman_ip_rev = QMAN_REV11;
}
}
@@ -529,7 +529,7 @@ static void log_edata_bits(u32 bit_count)
{
u32 i, j, mask = 0xffffffff;
- pr_warn("Qman ErrInt, EDATA:\n");
+ pr_warn("QMan ErrInt, EDATA:\n");
i = bit_count/32;
if (bit_count%32) {
i++;
@@ -553,17 +553,17 @@ static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
union qman_ecir2 ecir2_val;
ecir2_val.ecir2_raw = qm_in(ECIR2);
if (ecsr_val & PORTAL_ECSR_ERR) {
- pr_warn("Qman ErrInt: %s id %d\n",
+ pr_warn("QMan ErrInt: %s id %d\n",
(ecir2_val.info.portal_type) ?
"DCP" : "SWP", ecir2_val.info.portal_num);
}
if (ecsr_val & (FQID_ECSR_ERR | QM_EIRQ_IECE)) {
- pr_warn("Qman ErrInt: ecir.fqid 0x%x\n",
+ pr_warn("QMan ErrInt: ecir.fqid 0x%x\n",
ecir_val.info.fqid);
}
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.eadr_raw = qm_in(EADR);
- pr_warn("Qman ErrInt: EADR Memory: %s, 0x%x\n",
+ pr_warn("QMan ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[eadr_val.info_rev3.memid].txt,
error_mdata[eadr_val.info_rev3.memid].addr_mask
& eadr_val.info_rev3.eadr);
@@ -572,17 +572,17 @@ static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
}
} else {
if (ecsr_val & PORTAL_ECSR_ERR) {
- pr_warn("Qman ErrInt: %s id %d\n",
+ pr_warn("QMan ErrInt: %s id %d\n",
(ecir_val.info.portal_type) ?
"DCP" : "SWP", ecir_val.info.portal_num);
}
if (ecsr_val & FQID_ECSR_ERR) {
- pr_warn("Qman ErrInt: ecir.fqid 0x%x\n",
+ pr_warn("QMan ErrInt: ecir.fqid 0x%x\n",
ecir_val.info.fqid);
}
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.eadr_raw = qm_in(EADR);
- pr_warn("Qman ErrInt: EADR Memory: %s, 0x%x\n",
+ pr_warn("QMan ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[eadr_val.info.memid].txt,
error_mdata[eadr_val.info.memid].addr_mask
& eadr_val.info.eadr);
@@ -591,7 +591,7 @@ static void log_additional_error_info(u32 isr_val, u32 ecsr_val)
}
}
-/* Qman interrupt handler */
+/* QMan interrupt handler */
static irqreturn_t qman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
@@ -605,14 +605,14 @@ static irqreturn_t qman_isr(int irq, void *ptr)
return IRQ_NONE;
for (i = 0; i < QMAN_HWE_COUNT; i++) {
if (qman_hwerr_txts[i].mask & isr_mask) {
- pr_warn("Qman ErrInt: %s\n", qman_hwerr_txts[i].txt);
+ pr_warn("QMan ErrInt: %s\n", qman_hwerr_txts[i].txt);
if (qman_hwerr_txts[i].mask & ecsr_val) {
log_additional_error_info(isr_mask, ecsr_val);
/* Re-arm error capture registers */
qm_out(ECSR, ecsr_val);
}
if (qman_hwerr_txts[i].mask & QMAN_ERRS_TO_UNENABLE) {
- pr_devel("Qman un-enabling error 0x%x\n",
+ pr_devel("QMan un-enabling error 0x%x\n",
qman_hwerr_txts[i].mask);
ier_val &= ~qman_hwerr_txts[i].mask;
qm_err_isr_enable_write(qm, ier_val);
diff --git a/drivers/soc/freescale/qman_api.c b/drivers/soc/freescale/qman_api.c
index 2d980b3..08dbb36 100644
--- a/drivers/soc/freescale/qman_api.c
+++ b/drivers/soc/freescale/qman_api.c
@@ -388,24 +388,24 @@ struct qman_portal *qman_create_portal(
*/
if (qm_eqcr_init(__p, qm_eqcr_pvb,
portal->use_eqcr_ci_stashing ? 3 : 0, 1)) {
- pr_err("Qman EQCR initialisation failed\n");
+ pr_err("QMan EQCR initialisation failed\n");
goto fail_eqcr;
}
if (qm_dqrr_init(__p, config, qm_dqrr_dpush, qm_dqrr_pvb,
qm_dqrr_cdc, DQRR_MAXFILL)) {
- pr_err("Qman DQRR initialisation failed\n");
+ pr_err("QMan DQRR initialisation failed\n");
goto fail_dqrr;
}
if (qm_mr_init(__p, qm_mr_pvb, qm_mr_cci)) {
- pr_err("Qman MR initialisation failed\n");
+ pr_err("QMan MR initialisation failed\n");
goto fail_mr;
}
if (qm_mc_init(__p)) {
- pr_err("Qman MC initialisation failed\n");
+ pr_err("QMan MC initialisation failed\n");
goto fail_mc;
}
if (qm_isr_init(__p)) {
- pr_err("Qman ISR initialisation failed\n");
+ pr_err("QMan ISR initialisation failed\n");
goto fail_isr;
}
/* static interrupt-gating controls */
@@ -473,20 +473,20 @@ struct qman_portal *qman_create_portal(
qm_isr_disable_write(__p, isdr);
ret = qm_eqcr_get_fill(__p);
if (ret) {
- pr_err("Qman EQCR unclean\n");
+ pr_err("QMan EQCR unclean\n");
goto fail_eqcr_empty;
}
isdr ^= (QM_PIRQ_DQRI | QM_PIRQ_MRI);
qm_isr_disable_write(__p, isdr);
if (qm_dqrr_current(__p) != NULL) {
- pr_err("Qman DQRR unclean\n");
+ pr_err("QMan DQRR unclean\n");
qm_dqrr_cdc_consume_n(__p, 0xffff);
}
if (qm_mr_current(__p) != NULL) {
/* special handling, drain just in case it's a few FQRNIs */
if (drain_mr_fqrni(__p)) {
const struct qm_mr_entry *e = qm_mr_current(__p);
- pr_err("Qman MR unclean, MR VERB 0x%x, "
+ pr_err("QMan MR unclean, MR VERB 0x%x, "
"rc 0x%x\n, addr 0x%x",
e->verb, e->ern.rc, e->ern.fd.addr_lo);
goto fail_dqrr_mr_empty;
@@ -841,7 +841,7 @@ static noinline void clear_vdqcr(struct qman_portal *p, struct qman_fq *fq)
* above potential conflicts, but that this function itself is not re-entrant
* (this is because the function tracks one end of each FIFO in the portal and
* we do *not* want to lock that). So the consequence is that it is safe for
- * user callbacks to call into any Qman API *except* qman_poll() (as that's the
+ * user callbacks to call into any QMan API *except* qman_poll() (as that's the
* sole API that could be invoking the callback through this function).
*/
static inline unsigned int __poll_portal_fast(struct qman_portal *p,
diff --git a/drivers/soc/freescale/qman_portal.c b/drivers/soc/freescale/qman_portal.c
index ac1b80f..7216de1 100644
--- a/drivers/soc/freescale/qman_portal.c
+++ b/drivers/soc/freescale/qman_portal.c
@@ -109,7 +109,7 @@ static void qman_get_ip_revision(struct device_node *dn)
if (ip_rev) {
qman_ip_rev = ip_rev;
} else {
- pr_warn("unknown Qman version,"
+ pr_warn("unknown QMan version,"
" default to rev1.1\n");
qman_ip_rev = QMAN_REV11;
}
@@ -311,11 +311,11 @@ static struct qman_portal *init_pcfg(struct qm_portal_config *pcfg)
irq_sources |= QM_PIRQ_DQRI;
#endif
qman_p_irqsource_add(p, irq_sources);
- pr_info("Qman portal %sinitialised, cpu %d\n",
+ pr_info("QMan portal %sinitialised, cpu %d\n",
pcfg->public_cfg.is_shared ? "(shared) " : "",
pcfg->public_cfg.cpu);
} else
- pr_crit("Qman portal failure on cpu %d\n",
+ pr_crit("QMan portal failure on cpu %d\n",
pcfg->public_cfg.cpu);
return p;
}
@@ -327,9 +327,9 @@ static void init_slave(int cpu)
set_cpus_allowed_ptr(current, get_cpu_mask(cpu));
p = qman_create_affine_slave(shared_portals[shared_portals_idx++], cpu);
if (!p)
- pr_err("Qman slave portal failure on cpu %d\n", cpu);
+ pr_err("QMan slave portal failure on cpu %d\n", cpu);
else
- pr_info("Qman portal %sinitialised, cpu %d\n", "(slave) ", cpu);
+ pr_info("QMan portal %sinitialised, cpu %d\n", "(slave) ", cpu);
set_cpus_allowed_ptr(current, &oldmask);
if (shared_portals_idx >= num_shared_portals)
shared_portals_idx = 0;
@@ -397,12 +397,12 @@ __init int qman_init(void)
#endif
struct cpumask offline_cpus;
- /* Initialise the Qman (CCSR) device */
+ /* Initialise the QMan (CCSR) device */
for_each_compatible_node(dn, NULL, "fsl,qman") {
if (!qman_init_ccsr(dn))
- pr_info("Qman err interrupt handler present\n");
+ pr_info("QMan err interrupt handler present\n");
else
- pr_err("Qman CCSR setup failed\n");
+ pr_err("QMan CCSR setup failed\n");
}
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
/* Setup lookup table for FQ demux */
@@ -495,7 +495,7 @@ __init int qman_init(void)
if (!cpumask_empty(&slave_cpus))
for_each_cpu(cpu, &slave_cpus)
init_slave(cpu);
- pr_info("Qman portals initialised\n");
+ pr_info("QMan portals initialised\n");
cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask);
for_each_cpu(cpu, &offline_cpus)
qman_offline_cpu(cpu);
diff --git a/drivers/soc/freescale/qman_priv.h b/drivers/soc/freescale/qman_priv.h
index da9021b..2a5fa2d 100644
--- a/drivers/soc/freescale/qman_priv.h
+++ b/drivers/soc/freescale/qman_priv.h
@@ -41,7 +41,7 @@
/* ----------------- */
/* Congestion Groups */
/* ----------------- */
-/* This wrapper represents a bit-array for the state of the 256 Qman congestion
+/* This wrapper represents a bit-array for the state of the 256 QMan congestion
* groups. Is also used as a *mask* for congestion groups, eg. so we ignore
* those that don't concern us. We harness the structure and accessor details
* already used in the management command to query congestion groups. */
diff --git a/include/linux/fsl_bman.h b/include/linux/fsl_bman.h
index 16845d3..5883453 100644
--- a/include/linux/fsl_bman.h
+++ b/include/linux/fsl_bman.h
@@ -42,7 +42,7 @@ extern "C" {
#define BM_PIRQ_RCRI 0x00000002 /* RCR Ring (below threshold) */
#define BM_PIRQ_BSCN 0x00000001 /* Buffer depletion State Change */
-/* This wrapper represents a bit-array for the depletion state of the 64 Bman
+/* This wrapper represents a bit-array for the depletion state of the 64 BMan
* buffer pools. */
struct bman_depletion {
u32 __state[2];
@@ -74,7 +74,7 @@ static inline void bman_depletion_unset(struct bman_depletion *c, u8 bpid)
}
/* ------------------------------------------------------- */
-/* --- Bman data structures (and associated constants) --- */
+/* --- BMan data structures (and associated constants) --- */
/* Represents s/w corenet portal mapped data structures */
struct bm_rcr_entry; /* RCR (Release Command Ring) entries */
@@ -204,7 +204,7 @@ struct bm_mc_result {
/* Represents a managed portal */
struct bman_portal;
-/* This object type represents Bman buffer pools. */
+/* This object type represents BMan buffer pools. */
struct bman_pool;
struct bman_portal_config {
@@ -241,7 +241,7 @@ struct bman_pool_params {
void *cb_ctx;
/* depletion-entry/exit thresholds, if BMAN_POOL_FLAG_THRESH is set. NB:
* this is only allowed if BMAN_POOL_FLAG_DYNAMIC_BPID is used *and*
- * when run in the control plane (which controls Bman CCSR). This array
+ * when run in the control plane (which controls BMan CCSR). This array
* matches the definition of bm_pool_set(). */
u32 thresholds[4];
};
@@ -350,7 +350,7 @@ void bman_poll(void);
* bman_rcr_is_empty - Determine if portal's RCR is empty
*
* For use in situations where a cpu-affine caller needs to determine when all
- * releases for the local portal have been processed by Bman but can't use the
+ * releases for the local portal have been processed by BMan but can't use the
* BMAN_RELEASE_FLAG_WAIT_SYNC flag to do this from the final bman_release().
* The function forces tracking of RCR consumption (which normally doesn't
* happen until release processing needs to find space to put new release
diff --git a/include/linux/fsl_qman.h b/include/linux/fsl_qman.h
index c12cbd3..f52e919 100644
--- a/include/linux/fsl_qman.h
+++ b/include/linux/fsl_qman.h
@@ -109,7 +109,7 @@ static inline u32 QM_SDQCR_CHANNELS_POOL_CONV(u16 channel)
/* ------------------------------------------------------- */
-/* --- Qman data structures (and associated constants) --- */
+/* --- QMan data structures (and associated constants) --- */
/* Represents s/w corenet portal mapped data structures */
struct qm_eqcr_entry; /* EQCR (EnQueue Command Ring) entries */
@@ -978,12 +978,12 @@ u32 qman_fqid_pool_used(struct qman_fqid_pool *pool);
/* Represents a managed portal */
struct qman_portal;
-/* This object type represents Qman frame queue descriptors (FQD), it is
+/* This object type represents QMan frame queue descriptors (FQD), it is
* cacheline-aligned, and initialised by qman_create_fq(). The structure is
* defined further down. */
struct qman_fq;
-/* This object type represents a Qman congestion group, it is defined further
+/* This object type represents a QMan congestion group, it is defined further
* down. */
struct qman_cgr;
@@ -1083,7 +1083,7 @@ enum qman_fq_state {
*
* (b) when and if configuring the FQ for context stashing, specify how ever
* many cachelines are required to stash 'struct my_fq', to accelerate not
- * only the Qman driver but the callback as well.
+ * only the QMan driver but the callback as well.
*/
struct qman_fq_cb {
@@ -1358,7 +1358,7 @@ void qman_dca(struct qm_dqrr_entry *dq, int park_request);
* qman_eqcr_is_empty - Determine if portal's EQCR is empty
*
* For use in situations where a cpu-affine caller needs to determine when all
- * enqueues for the local portal have been processed by Qman but can't use the
+ * enqueues for the local portal have been processed by QMan but can't use the
* QMAN_ENQUEUE_FLAG_WAIT_SYNC flag to do this from the final qman_enqueue().
* The function forces tracking of EQCR consumption (which normally doesn't
* happen until enqueue processing needs to find space to put new enqueue
@@ -1372,7 +1372,7 @@ int qman_eqcr_is_empty(void);
* @handler: callback for processing DCP ERNs
* @affine: whether this handler is specific to the locally affine portal
*
- * If a hardware block's interface to Qman (ie. its direct-connect portal, or
+ * If a hardware block's interface to QMan (ie. its direct-connect portal, or
* DCP) is configured not to receive enqueue rejections, then any enqueues
* through that DCP that are rejected will be sent to a given software portal.
* If @affine is non-zero, then this handler will only be used for DCP ERNs
@@ -1582,13 +1582,13 @@ int qman_volatile_dequeue(struct qman_fq *fq, u32 flags, u32 vdqcr);
* (and FLAG_WAIT not specified), congestion avoidance (FLAG_WATCH_CGR
* specified), etc. If the ring is full and FLAG_WAIT is specified, this
* function will block. If FLAG_INTERRUPT is set, the EQCI bit of the portal
- * interrupt will assert when Qman consumes the EQCR entry (subject to "status
- * disable", "enable", and "inhibit" registers). If FLAG_DCA is set, Qman will
+ * interrupt will assert when QMan consumes the EQCR entry (subject to "status
+ * disable", "enable", and "inhibit" registers). If FLAG_DCA is set, QMan will
* perform an implied "discrete consumption acknowledgement" on the dequeue
* ring's (DQRR) entry, at the ring index specified by the FLAG_DCA_IDX(x)
* macro. (As an alternative to issuing explicit DCA actions on DQRR entries,
* this implicit DCA can delay the release of a "held active" frame queue
- * corresponding to a DQRR entry until Qman consumes the EQCR entry - providing
+ * corresponding to a DQRR entry until QMan consumes the EQCR entry - providing
* order-preservation semantics in packet-forwarding scenarios.) If FLAG_DCA is
* set, then FLAG_DCA_PARK can also be set to imply that the DQRR consumption
* acknowledgement should "park request" the "held active" frame queue. Ie.
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 06/10] fsl_qman: Add self-tester
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (4 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 05/10] fsl_bman: Add self-tester Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 07/10] fsl_bman: Add debugfs support Emil Medve
` (4 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I314d36d94717cfc34053b6212899f71cb729d16c
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/freescale/Kconfig | 26 +-
drivers/soc/freescale/Makefile | 4 +
drivers/soc/freescale/bman_test.c | 2 +-
drivers/soc/freescale/{bman_test.c => qman_test.c} | 15 +-
drivers/soc/freescale/{bman_test.c => qman_test.h} | 33 +-
drivers/soc/freescale/qman_test_api.c | 213 +++++++++
drivers/soc/freescale/qman_test_stash.c | 497 +++++++++++++++++++++
7 files changed, 758 insertions(+), 32 deletions(-)
copy drivers/soc/freescale/{bman_test.c => qman_test.c} (91%)
copy drivers/soc/freescale/{bman_test.c => qman_test.h} (81%)
create mode 100644 drivers/soc/freescale/qman_test_api.c
create mode 100644 drivers/soc/freescale/qman_test_stash.c
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
index 6786b94..001999e 100644
--- a/drivers/soc/freescale/Kconfig
+++ b/drivers/soc/freescale/Kconfig
@@ -53,7 +53,7 @@ config FSL_BMAN_TEST
---help---
This option compiles self-test code for BMan.
-config FSL_BMAN_TEST_HIGH
+config FSL_BMAN_TEST_API
bool "BMan high-level self-test"
depends on FSL_BMAN_TEST
default y
@@ -93,6 +93,30 @@ config FSL_QMAN_CONFIG
linux image is running as a guest OS under the hypervisor, only one
guest OS ("the control plane") needs this option.
+config FSL_QMAN_TEST
+ tristate "QMan self-tests"
+ default n
+ ---help---
+ This option compiles self-test code for QMan.
+
+config FSL_QMAN_TEST_API
+ bool "QMan high-level self-test"
+ depends on FSL_QMAN_TEST
+ default y
+ ---help---
+ This requires the presence of cpu-affine portals, and performs
+ high-level API testing with them (whichever portal(s) are affine to
+ the cpu(s) the test executes on).
+
+config FSL_QMAN_TEST_STASH
+ bool "QMan 'hot potato' data-stashing self-test"
+ depends on FSL_QMAN_TEST
+ default y
+ ---help---
+ This performs a "hot potato" style test enqueuing/dequeuing a frame
+ across a series of FQs scheduled to different portals (and cpus), with
+ DQRR, data and context stashing always on.
+
# H/w settings that can be hard-coded for now.
config FSL_QMAN_FQD_SZ
int "size of Frame Queue Descriptor region"
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
index 09f31b0..1f59a6b 100644
--- a/drivers/soc/freescale/Makefile
+++ b/drivers/soc/freescale/Makefile
@@ -13,3 +13,7 @@ bman_tester-$(CONFIG_FSL_BMAN_TEST_THRESH) += bman_test_thresh.o
# QMan
obj-$(CONFIG_FSL_QMAN) += qman_api.o qman_utils.o
obj-$(CONFIG_FSL_QMAN_CONFIG) += qman.o qman_portal.o
+obj-$(CONFIG_FSL_QMAN_TEST) += qman_tester.o
+qman_tester-y = qman_test.o
+qman_tester-$(CONFIG_FSL_QMAN_TEST_API) += qman_test_api.o
+qman_tester-$(CONFIG_FSL_QMAN_TEST_STASH) += qman_test_stash.o
diff --git a/drivers/soc/freescale/bman_test.c b/drivers/soc/freescale/bman_test.c
index 350f2f8..5d23752 100644
--- a/drivers/soc/freescale/bman_test.c
+++ b/drivers/soc/freescale/bman_test.c
@@ -37,7 +37,7 @@ MODULE_DESCRIPTION("BMan testing");
static int test_init(void)
{
-#ifdef CONFIG_FSL_BMAN_TEST_HIGH
+#ifdef CONFIG_FSL_BMAN_TEST_API
int loop = 1;
while (loop--)
bman_test_api();
diff --git a/drivers/soc/freescale/bman_test.c b/drivers/soc/freescale/qman_test.c
similarity index 91%
copy from drivers/soc/freescale/bman_test.c
copy to drivers/soc/freescale/qman_test.c
index 350f2f8..094d46d 100644
--- a/drivers/soc/freescale/bman_test.c
+++ b/drivers/soc/freescale/qman_test.c
@@ -29,22 +29,23 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include "bman_test.h"
+#include "qman_test.h"
MODULE_AUTHOR("Geoff Thorpe");
MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("BMan testing");
+MODULE_DESCRIPTION("QMan testing");
static int test_init(void)
{
-#ifdef CONFIG_FSL_BMAN_TEST_HIGH
int loop = 1;
- while (loop--)
- bman_test_api();
+ while (loop--) {
+#ifdef CONFIG_FSL_QMAN_TEST_STASH
+ qman_test_stash();
#endif
-#ifdef CONFIG_FSL_BMAN_TEST_THRESH
- bman_test_thresh();
+#ifdef CONFIG_FSL_QMAN_TEST_API
+ qman_test_api();
#endif
+ }
return 0;
}
diff --git a/drivers/soc/freescale/bman_test.c b/drivers/soc/freescale/qman_test.h
similarity index 81%
copy from drivers/soc/freescale/bman_test.c
copy to drivers/soc/freescale/qman_test.h
index 350f2f8..4690376 100644
--- a/drivers/soc/freescale/bman_test.c
+++ b/drivers/soc/freescale/qman_test.h
@@ -29,28 +29,15 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include "bman_test.h"
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
-MODULE_AUTHOR("Geoff Thorpe");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_DESCRIPTION("BMan testing");
+#include <linux/fsl_qman.h>
-static int test_init(void)
-{
-#ifdef CONFIG_FSL_BMAN_TEST_HIGH
- int loop = 1;
- while (loop--)
- bman_test_api();
-#endif
-#ifdef CONFIG_FSL_BMAN_TEST_THRESH
- bman_test_thresh();
-#endif
- return 0;
-}
-
-static void test_exit(void)
-{
-}
-
-module_init(test_init);
-module_exit(test_exit);
+void qman_test_stash(void);
+void qman_test_api(void);
diff --git a/drivers/soc/freescale/qman_test_api.c b/drivers/soc/freescale/qman_test_api.c
new file mode 100644
index 0000000..ab8ea41
--- /dev/null
+++ b/drivers/soc/freescale/qman_test_api.c
@@ -0,0 +1,213 @@
+/* Copyright 2008-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qman_test.h"
+
+/*************/
+/* constants */
+/*************/
+
+#define CGR_ID 27
+#define POOL_ID 2
+#define FQ_FLAGS QMAN_FQ_FLAG_DYNAMIC_FQID
+#define NUM_ENQUEUES 10
+#define NUM_PARTIAL 4
+#define PORTAL_SDQCR (QM_SDQCR_SOURCE_CHANNELS | \
+ QM_SDQCR_TYPE_PRIO_QOS | \
+ QM_SDQCR_TOKEN_SET(0x98) | \
+ QM_SDQCR_CHANNELS_DEDICATED | \
+ QM_SDQCR_CHANNELS_POOL(POOL_ID))
+#define PORTAL_OPAQUE ((void *)0xf00dbeef)
+#define VDQCR_FLAGS (QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH)
+
+/*************************************/
+/* Predeclarations (eg. for fq_base) */
+/*************************************/
+
+static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *,
+ struct qman_fq *,
+ const struct qm_dqrr_entry *);
+static void cb_ern(struct qman_portal *, struct qman_fq *,
+ const struct qm_mr_entry *);
+static void cb_fqs(struct qman_portal *, struct qman_fq *,
+ const struct qm_mr_entry *);
+
+/***************/
+/* global vars */
+/***************/
+
+static struct qm_fd fd, fd_dq;
+static struct qman_fq fq_base = {
+ .cb.dqrr = cb_dqrr,
+ .cb.ern = cb_ern,
+ .cb.fqs = cb_fqs
+};
+static DECLARE_WAIT_QUEUE_HEAD(waitqueue);
+static int retire_complete, sdqcr_complete;
+
+/**********************/
+/* internal functions */
+/**********************/
+
+/* Helpers for initialising and "incrementing" a frame descriptor */
+static void fd_init(struct qm_fd *__fd)
+{
+ qm_fd_addr_set64(__fd, 0xabdeadbeefLLU);
+ __fd->format = qm_fd_contig_big;
+ __fd->length29 = 0x0000ffff;
+ __fd->cmd = 0xfeedf00d;
+}
+
+static void fd_inc(struct qm_fd *__fd)
+{
+ u64 t = qm_fd_addr_get64(__fd);
+ int z = t >> 40;
+ t <<= 1;
+ if (z)
+ t |= 1;
+ qm_fd_addr_set64(__fd, t);
+ __fd->length29--;
+ __fd->cmd++;
+}
+
+/* The only part of the 'fd' we can't memcmp() is the ppid */
+static int fd_cmp(const struct qm_fd *a, const struct qm_fd *b)
+{
+ int r = (qm_fd_addr_get64(a) == qm_fd_addr_get64(b)) ? 0 : -1;
+ if (!r)
+ r = a->format - b->format;
+ if (!r)
+ r = a->opaque - b->opaque;
+ if (!r)
+ r = a->cmd - b->cmd;
+ return r;
+}
+
+/********/
+/* test */
+/********/
+
+static void do_enqueues(struct qman_fq *fq)
+{
+ unsigned int loop;
+ for (loop = 0; loop < NUM_ENQUEUES; loop++) {
+ if (qman_enqueue(fq, &fd, QMAN_ENQUEUE_FLAG_WAIT |
+ (((loop + 1) == NUM_ENQUEUES) ?
+ QMAN_ENQUEUE_FLAG_WAIT_SYNC : 0)))
+ panic("qman_enqueue() failed\n");
+ fd_inc(&fd);
+ }
+}
+
+void qman_test_api(void)
+{
+ unsigned int flags;
+ int res;
+ struct qman_fq *fq = &fq_base;
+
+ pr_info("qman_test_api starting\n");
+ fd_init(&fd);
+ fd_init(&fd_dq);
+
+ /* Initialise (parked) FQ */
+ if (qman_create_fq(0, FQ_FLAGS, fq))
+ panic("qman_create_fq() failed\n");
+ if (qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL))
+ panic("qman_init_fq() failed\n");
+
+ /* Do enqueues + VDQCR, twice. (Parked FQ) */
+ do_enqueues(fq);
+ pr_info("VDQCR (till-empty);\n");
+ if (qman_volatile_dequeue(fq, VDQCR_FLAGS,
+ QM_VDQCR_NUMFRAMES_TILLEMPTY))
+ panic("qman_volatile_dequeue() failed\n");
+ do_enqueues(fq);
+ pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
+ if (qman_volatile_dequeue(fq, VDQCR_FLAGS,
+ QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL)))
+ panic("qman_volatile_dequeue() failed\n");
+ pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
+ NUM_ENQUEUES);
+ if (qman_volatile_dequeue(fq, VDQCR_FLAGS,
+ QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL)))
+ panic("qman_volatile_dequeue() failed\n");
+
+ do_enqueues(fq);
+ pr_info("scheduled dequeue (till-empty)\n");
+ if (qman_schedule_fq(fq))
+ panic("qman_schedule_fq() failed\n");
+ wait_event(waitqueue, sdqcr_complete);
+
+ /* Retire and OOS the FQ */
+ res = qman_retire_fq(fq, &flags);
+ if (res < 0)
+ panic("qman_retire_fq() failed\n");
+ wait_event(waitqueue, retire_complete);
+ if (flags & QMAN_FQ_STATE_BLOCKOOS)
+ panic("leaking frames\n");
+ if (qman_oos_fq(fq))
+ panic("qman_oos_fq() failed\n");
+ qman_destroy_fq(fq, 0);
+ pr_info("qman_test_api finished\n");
+}
+
+static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p,
+ struct qman_fq *fq,
+ const struct qm_dqrr_entry *dq)
+{
+ if (fd_cmp(&fd_dq, &dq->fd)) {
+ pr_err("BADNESS: dequeued frame doesn't match;\n");
+ BUG();
+ }
+ fd_inc(&fd_dq);
+ if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_cmp(&fd_dq, &fd)) {
+ sdqcr_complete = 1;
+ wake_up(&waitqueue);
+ }
+ return qman_cb_dqrr_consume;
+}
+
+static void cb_ern(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_mr_entry *msg)
+{
+ panic("cb_ern() unimplemented");
+}
+
+static void cb_fqs(struct qman_portal *p, struct qman_fq *fq,
+ const struct qm_mr_entry *msg)
+{
+ u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK);
+ if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI))
+ panic("unexpected FQS message");
+ pr_info("Retirement message received\n");
+ retire_complete = 1;
+ wake_up(&waitqueue);
+}
diff --git a/drivers/soc/freescale/qman_test_stash.c b/drivers/soc/freescale/qman_test_stash.c
new file mode 100644
index 0000000..bb17d98
--- /dev/null
+++ b/drivers/soc/freescale/qman_test_stash.c
@@ -0,0 +1,497 @@
+/* Copyright 2009-2012 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kthread.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include "qman_test.h"
+
+/* Algorithm:
+ *
+ * Each cpu will have HP_PER_CPU "handlers" set up, each of which incorporates
+ * an rx/tx pair of FQ objects (both of which are stashed on dequeue). The
+ * organisation of FQIDs is such that the HP_PER_CPU*NUM_CPUS handlers will
+ * shuttle a "hot potato" frame around them such that every forwarding action
+ * moves it from one cpu to another. (The use of more than one handler per cpu
+ * is to allow enough handlers/FQs to truly test the significance of caching -
+ * ie. when cache-expiries are occurring.)
+ *
+ * The "hot potato" frame content will be HP_NUM_WORDS*4 bytes in size, and the
+ * first and last words of the frame data will undergo a transformation step on
+ * each forwarding action. To achieve this, each handler will be assigned a
+ * 32-bit "mixer", that is produced using a 32-bit LFSR. When a frame is
+ * received by a handler, the mixer of the expected sender is XOR'd into all
+ * words of the entire frame, which is then validated against the original
+ * values. Then, before forwarding, the entire frame is XOR'd with the mixer of
+ * the current handler. Apart from validating that the frame is taking the
+ * expected path, this also provides some quasi-realistic overheads to each
+ * forwarding action - dereferencing *all* the frame data, computation, and
+ * conditional branching. There is a "special" handler designated to act as the
+ * instigator of the test by creating an enqueuing the "hot potato" frame, and
+ * to determine when the test has completed by counting HP_LOOPS iterations.
+ *
+ * Init phases:
+ *
+ * 1. prepare each cpu's 'hp_cpu' struct using on_each_cpu(,,1) and link them
+ * into 'hp_cpu_list'. Specifically, set processor_id, allocate HP_PER_CPU
+ * handlers and link-list them (but do no other handler setup).
+ *
+ * 2. scan over 'hp_cpu_list' HP_PER_CPU times, the first time sets each
+ * hp_cpu's 'iterator' to point to its first handler. With each loop,
+ * allocate rx/tx FQIDs and mixer values to the hp_cpu's iterator handler
+ * and advance the iterator for the next loop. This includes a final fixup,
+ * which connects the last handler to the first (and which is why phase 2
+ * and 3 are separate).
+ *
+ * 3. scan over 'hp_cpu_list' HP_PER_CPU times, the first time sets each
+ * hp_cpu's 'iterator' to point to its first handler. With each loop,
+ * initialise FQ objects and advance the iterator for the next loop.
+ * Moreover, do this initialisation on the cpu it applies to so that Rx FQ
+ * initialisation targets the correct cpu.
+ */
+
+/* helper to run something on all cpus (can't use on_each_cpu(), as that invokes
+ * the fn from irq context, which is too restrictive). */
+struct bstrap {
+ void (*fn)(void);
+ atomic_t started;
+};
+static int bstrap_fn(void *__bstrap)
+{
+ struct bstrap *bstrap = __bstrap;
+ atomic_inc(&bstrap->started);
+ bstrap->fn();
+ while (!kthread_should_stop())
+ msleep(1);
+ return 0;
+}
+static int on_all_cpus(void (*fn)(void))
+{
+ int cpu;
+ for_each_cpu(cpu, cpu_online_mask) {
+ struct bstrap bstrap = {
+ .fn = fn,
+ .started = ATOMIC_INIT(0)
+ };
+ struct task_struct *k = kthread_create(bstrap_fn, &bstrap,
+ "hotpotato%d", cpu);
+ int ret;
+ if (IS_ERR(k))
+ return -ENOMEM;
+ kthread_bind(k, cpu);
+ wake_up_process(k);
+ /* If we call kthread_stop() before the "wake up" has had an
+ * effect, then the thread may exit with -EINTR without ever
+ * running the function. So poll until it's started before
+ * requesting it to stop. */
+ while (!atomic_read(&bstrap.started))
+ msleep(10);
+ ret = kthread_stop(k);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+struct hp_handler {
+
+ /* The following data is stashed when 'rx' is dequeued; */
+ /* -------------- */
+ /* The Rx FQ, dequeues of which will stash the entire hp_handler */
+ struct qman_fq rx;
+ /* The Tx FQ we should forward to */
+ struct qman_fq tx;
+ /* The value we XOR post-dequeue, prior to validating */
+ u32 rx_mixer;
+ /* The value we XOR pre-enqueue, after validating */
+ u32 tx_mixer;
+ /* what the hotpotato address should be on dequeue */
+ dma_addr_t addr;
+ u32 *frame_ptr;
+
+ /* The following data isn't (necessarily) stashed on dequeue; */
+ /* -------------- */
+ u32 fqid_rx, fqid_tx;
+ /* list node for linking us into 'hp_cpu' */
+ struct list_head node;
+ /* Just to check ... */
+ unsigned int processor_id;
+} ____cacheline_aligned;
+
+struct hp_cpu {
+ /* identify the cpu we run on; */
+ unsigned int processor_id;
+ /* root node for the per-cpu list of handlers */
+ struct list_head handlers;
+ /* list node for linking us into 'hp_cpu_list' */
+ struct list_head node;
+ /* when repeatedly scanning 'hp_list', each time linking the n'th
+ * handlers together, this is used as per-cpu iterator state */
+ struct hp_handler *iterator;
+};
+
+/* Each cpu has one of these */
+static DEFINE_PER_CPU(struct hp_cpu, hp_cpus);
+
+/* links together the hp_cpu structs, in first-come first-serve order. */
+static LIST_HEAD(hp_cpu_list);
+static spinlock_t hp_lock = __SPIN_LOCK_UNLOCKED(hp_lock);
+
+static unsigned int hp_cpu_list_length;
+
+/* the "special" handler, that starts and terminates the test. */
+static struct hp_handler *special_handler;
+static int loop_counter;
+
+/* handlers are allocated out of this, so they're properly aligned. */
+static struct kmem_cache *hp_handler_slab;
+
+/* this is the frame data */
+static void *__frame_ptr;
+static u32 *frame_ptr;
+static dma_addr_t frame_dma;
+
+/* the main function waits on this */
+static DECLARE_WAIT_QUEUE_HEAD(queue);
+
+#define HP_PER_CPU 2
+#define HP_LOOPS 8
+/* 80 bytes, like a small ethernet frame, and bleeds into a second cacheline */
+#define HP_NUM_WORDS 80
+/* First word of the LFSR-based frame data */
+#define HP_FIRST_WORD 0xabbaf00d
+
+static inline u32 do_lfsr(u32 prev)
+{
+ return (prev >> 1) ^ (-(prev & 1u) & 0xd0000001u);
+}
+
+static void allocate_frame_data(void)
+{
+ u32 lfsr = HP_FIRST_WORD;
+ int loop;
+ struct platform_device *pdev = platform_device_alloc("foobar", -1);
+ if (!pdev)
+ panic("platform_device_alloc() failed");
+ if (platform_device_add(pdev))
+ panic("platform_device_add() failed");
+ __frame_ptr = kmalloc(4 * HP_NUM_WORDS, GFP_KERNEL);
+ if (!__frame_ptr)
+ panic("kmalloc() failed");
+ frame_ptr = (void *)(((unsigned long)__frame_ptr + 63) &
+ ~(unsigned long)63);
+ for (loop = 0; loop < HP_NUM_WORDS; loop++) {
+ frame_ptr[loop] = lfsr;
+ lfsr = do_lfsr(lfsr);
+ }
+ frame_dma = dma_map_single(&pdev->dev, frame_ptr, 4 * HP_NUM_WORDS,
+ DMA_BIDIRECTIONAL);
+ platform_device_del(pdev);
+ platform_device_put(pdev);
+}
+
+static void deallocate_frame_data(void)
+{
+ kfree(__frame_ptr);
+}
+
+static inline void process_frame_data(struct hp_handler *handler,
+ const struct qm_fd *fd)
+{
+ u32 *p = handler->frame_ptr;
+ u32 lfsr = HP_FIRST_WORD;
+ int loop;
+ if (qm_fd_addr_get64(fd) != handler->addr)
+ panic("bad frame address");
+ for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) {
+ *p ^= handler->rx_mixer;
+ if (*p != lfsr)
+ panic("corrupt frame data");
+ *p ^= handler->tx_mixer;
+ lfsr = do_lfsr(lfsr);
+ }
+}
+
+static enum qman_cb_dqrr_result normal_dqrr(struct qman_portal *portal,
+ struct qman_fq *fq,
+ const struct qm_dqrr_entry *dqrr)
+{
+ struct hp_handler *handler = (struct hp_handler *)fq;
+
+ process_frame_data(handler, &dqrr->fd);
+ if (qman_enqueue(&handler->tx, &dqrr->fd, 0))
+ panic("qman_enqueue() failed");
+ return qman_cb_dqrr_consume;
+}
+
+static enum qman_cb_dqrr_result special_dqrr(struct qman_portal *portal,
+ struct qman_fq *fq,
+ const struct qm_dqrr_entry *dqrr)
+{
+ struct hp_handler *handler = (struct hp_handler *)fq;
+
+ process_frame_data(handler, &dqrr->fd);
+ if (++loop_counter < HP_LOOPS) {
+ if (qman_enqueue(&handler->tx, &dqrr->fd, 0))
+ panic("qman_enqueue() failed");
+ } else {
+ pr_info("Received final (%dth) frame\n", loop_counter);
+ wake_up(&queue);
+ }
+ return qman_cb_dqrr_consume;
+}
+
+static void create_per_cpu_handlers(void)
+{
+ struct hp_handler *handler;
+ int loop;
+ struct hp_cpu *hp_cpu = this_cpu_ptr(&hp_cpus);
+
+ hp_cpu->processor_id = smp_processor_id();
+ spin_lock(&hp_lock);
+ list_add_tail(&hp_cpu->node, &hp_cpu_list);
+ hp_cpu_list_length++;
+ spin_unlock(&hp_lock);
+ INIT_LIST_HEAD(&hp_cpu->handlers);
+ for (loop = 0; loop < HP_PER_CPU; loop++) {
+ handler = kmem_cache_alloc(hp_handler_slab, GFP_KERNEL);
+ if (!handler)
+ panic("kmem_cache_alloc() failed");
+ handler->processor_id = hp_cpu->processor_id;
+ handler->addr = frame_dma;
+ handler->frame_ptr = frame_ptr;
+ list_add_tail(&handler->node, &hp_cpu->handlers);
+ }
+}
+
+static void destroy_per_cpu_handlers(void)
+{
+ struct list_head *loop, *tmp;
+ struct hp_cpu *hp_cpu = &this_cpu_ptr(&hp_cpus);
+
+ spin_lock(&hp_lock);
+ list_del(&hp_cpu->node);
+ spin_unlock(&hp_lock);
+ list_for_each_safe(loop, tmp, &hp_cpu->handlers) {
+ u32 flags;
+ struct hp_handler *handler = list_entry(loop, struct hp_handler,
+ node);
+ if (qman_retire_fq(&handler->rx, &flags))
+ panic("qman_retire_fq(rx) failed");
+ BUG_ON(flags & QMAN_FQ_STATE_BLOCKOOS);
+ if (qman_oos_fq(&handler->rx))
+ panic("qman_oos_fq(rx) failed");
+ qman_destroy_fq(&handler->rx, 0);
+ qman_destroy_fq(&handler->tx, 0);
+ qman_release_fqid(handler->fqid_rx);
+ list_del(&handler->node);
+ kmem_cache_free(hp_handler_slab, handler);
+ }
+}
+
+static inline u8 num_cachelines(u32 offset)
+{
+ u8 res = (offset + (L1_CACHE_BYTES - 1))
+ / (L1_CACHE_BYTES);
+ if (res > 3)
+ return 3;
+ return res;
+}
+#define STASH_DATA_CL \
+ num_cachelines(HP_NUM_WORDS * 4)
+#define STASH_CTX_CL \
+ num_cachelines(offsetof(struct hp_handler, fqid_rx))
+
+static void init_handler(void *__handler)
+{
+ struct qm_mcc_initfq opts;
+ struct hp_handler *handler = __handler;
+ BUG_ON(handler->processor_id != smp_processor_id());
+ /* Set up rx */
+ memset(&handler->rx, 0, sizeof(handler->rx));
+ if (handler == special_handler)
+ handler->rx.cb.dqrr = special_dqrr;
+ else
+ handler->rx.cb.dqrr = normal_dqrr;
+ if (qman_create_fq(handler->fqid_rx, 0, &handler->rx))
+ panic("qman_create_fq(rx) failed");
+ memset(&opts, 0, sizeof(opts));
+ opts.we_mask = QM_INITFQ_WE_FQCTRL | QM_INITFQ_WE_CONTEXTA;
+ opts.fqd.fq_ctrl = QM_FQCTRL_CTXASTASHING;
+ opts.fqd.context_a.stashing.data_cl = STASH_DATA_CL;
+ opts.fqd.context_a.stashing.context_cl = STASH_CTX_CL;
+ if (qman_init_fq(&handler->rx, QMAN_INITFQ_FLAG_SCHED |
+ QMAN_INITFQ_FLAG_LOCAL, &opts))
+ panic("qman_init_fq(rx) failed");
+ /* Set up tx */
+ memset(&handler->tx, 0, sizeof(handler->tx));
+ if (qman_create_fq(handler->fqid_tx, QMAN_FQ_FLAG_NO_MODIFY,
+ &handler->tx))
+ panic("qman_create_fq(tx) failed");
+}
+
+static void init_phase2(void)
+{
+ int loop;
+ u32 fqid = 0;
+ u32 lfsr = 0xdeadbeef;
+ struct hp_cpu *hp_cpu;
+ struct hp_handler *handler;
+
+ for (loop = 0; loop < HP_PER_CPU; loop++) {
+ list_for_each_entry(hp_cpu, &hp_cpu_list, node) {
+ int ret;
+ if (!loop)
+ hp_cpu->iterator = list_first_entry(
+ &hp_cpu->handlers,
+ struct hp_handler, node);
+ else
+ hp_cpu->iterator = list_entry(
+ hp_cpu->iterator->node.next,
+ struct hp_handler, node);
+ /* Rx FQID is the previous handler's Tx FQID */
+ hp_cpu->iterator->fqid_rx = fqid;
+ /* Allocate new FQID for Tx */
+ ret = qman_alloc_fqid(&fqid);
+ if (ret)
+ panic("qman_alloc_fqid() failed");
+ hp_cpu->iterator->fqid_tx = fqid;
+ /* Rx mixer is the previous handler's Tx mixer */
+ hp_cpu->iterator->rx_mixer = lfsr;
+ /* Get new mixer for Tx */
+ lfsr = do_lfsr(lfsr);
+ hp_cpu->iterator->tx_mixer = lfsr;
+ }
+ }
+ /* Fix up the first handler (fqid_rx==0, rx_mixer=0xdeadbeef) */
+ hp_cpu = list_first_entry(&hp_cpu_list, struct hp_cpu, node);
+ handler = list_first_entry(&hp_cpu->handlers, struct hp_handler, node);
+ BUG_ON((handler->fqid_rx != 0) || (handler->rx_mixer != 0xdeadbeef));
+ handler->fqid_rx = fqid;
+ handler->rx_mixer = lfsr;
+ /* and tag it as our "special" handler */
+ special_handler = handler;
+}
+
+static void init_phase3(void)
+{
+ int loop;
+ struct hp_cpu *hp_cpu;
+
+ for (loop = 0; loop < HP_PER_CPU; loop++) {
+ list_for_each_entry(hp_cpu, &hp_cpu_list, node) {
+ if (!loop)
+ hp_cpu->iterator = list_first_entry(
+ &hp_cpu->handlers,
+ struct hp_handler, node);
+ else
+ hp_cpu->iterator = list_entry(
+ hp_cpu->iterator->node.next,
+ struct hp_handler, node);
+ preempt_disable();
+ if (hp_cpu->processor_id == smp_processor_id())
+ init_handler(hp_cpu->iterator);
+ else
+ smp_call_function_single(hp_cpu->processor_id,
+ init_handler, hp_cpu->iterator, 1);
+ preempt_enable();
+ }
+ }
+}
+
+static void send_first_frame(void *ignore)
+{
+ u32 *p = special_handler->frame_ptr;
+ u32 lfsr = HP_FIRST_WORD;
+ int loop;
+ struct qm_fd fd;
+
+ BUG_ON(special_handler->processor_id != smp_processor_id());
+ memset(&fd, 0, sizeof(fd));
+ qm_fd_addr_set64(&fd, special_handler->addr);
+ fd.format = qm_fd_contig_big;
+ fd.length29 = HP_NUM_WORDS * 4;
+ for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) {
+ if (*p != lfsr)
+ panic("corrupt frame data");
+ *p ^= special_handler->tx_mixer;
+ lfsr = do_lfsr(lfsr);
+ }
+ pr_info("Sending first frame\n");
+ if (qman_enqueue(&special_handler->tx, &fd, 0))
+ panic("qman_enqueue() failed");
+}
+
+void qman_test_stash(void)
+{
+ if (cpumask_weight(cpu_online_mask) < 2) {
+ pr_info("qman_test_stash, skip - only 1 CPU\n");
+ return;
+ }
+
+ pr_info("qman_test_stash starting\n");
+
+ hp_cpu_list_length = 0;
+ loop_counter = 0;
+ hp_handler_slab = kmem_cache_create("hp_handler_slab",
+ sizeof(struct hp_handler), L1_CACHE_BYTES,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!hp_handler_slab)
+ panic("kmem_cache_create() failed");
+
+ allocate_frame_data();
+
+ /* Init phase 1 */
+ pr_info("Creating %d handlers per cpu...\n", HP_PER_CPU);
+ if (on_all_cpus(create_per_cpu_handlers))
+ panic("on_each_cpu() failed");
+ pr_info("Number of cpus: %d, total of %d handlers\n",
+ hp_cpu_list_length, hp_cpu_list_length * HP_PER_CPU);
+
+ init_phase2();
+
+ init_phase3();
+
+ preempt_disable();
+ if (special_handler->processor_id == smp_processor_id())
+ send_first_frame(NULL);
+ else
+ smp_call_function_single(special_handler->processor_id,
+ send_first_frame, NULL, 1);
+ preempt_enable();
+
+ wait_event(queue, loop_counter == HP_LOOPS);
+ deallocate_frame_data();
+ if (on_all_cpus(destroy_per_cpu_handlers))
+ panic("on_each_cpu() failed");
+ kmem_cache_destroy(hp_handler_slab);
+ pr_info("qman_test_stash finished\n");
+}
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 07/10] fsl_bman: Add debugfs support
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (5 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 06/10] fsl_qman: " Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 08/10] fsl_qman: " Emil Medve
` (3 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I7eea7aea8a58ad0c28451b70801c0d101e88d263
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/freescale/Kconfig | 7 +++
drivers/soc/freescale/Makefile | 1 +
drivers/soc/freescale/bman_api.c | 19 ++++++
drivers/soc/freescale/bman_debugfs.c | 119 +++++++++++++++++++++++++++++++++++
drivers/soc/freescale/dpaa_sys.h | 1 +
include/linux/fsl_bman.h | 6 ++
6 files changed, 153 insertions(+)
create mode 100644 drivers/soc/freescale/bman_debugfs.c
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
index 001999e..f819671 100644
--- a/drivers/soc/freescale/Kconfig
+++ b/drivers/soc/freescale/Kconfig
@@ -73,6 +73,13 @@ config FSL_BMAN_TEST_THRESH
"drainer" thread, and the other threads that they observe exactly
the depletion state changes that are expected.
+config FSL_BMAN_DEBUGFS
+ tristate "BMan debugfs interface"
+ depends on DEBUG_FS
+ default y
+ ---help---
+ This option compiles debugfs code for BMan.
+
endif # FSL_BMAN
config FSL_QMAN
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
index 1f59a6b..c980dac 100644
--- a/drivers/soc/freescale/Makefile
+++ b/drivers/soc/freescale/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_FSL_BMAN_TEST) += bman_tester.o
bman_tester-y = bman_test.o
bman_tester-$(CONFIG_FSL_BMAN_TEST_API) += bman_test_api.o
bman_tester-$(CONFIG_FSL_BMAN_TEST_THRESH) += bman_test_thresh.o
+obj-$(CONFIG_FSL_BMAN_DEBUGFS) += bman_debugfs.o
# QMan
obj-$(CONFIG_FSL_QMAN) += qman_api.o qman_utils.o
diff --git a/drivers/soc/freescale/bman_api.c b/drivers/soc/freescale/bman_api.c
index 7bb4840..20f510a 100644
--- a/drivers/soc/freescale/bman_api.c
+++ b/drivers/soc/freescale/bman_api.c
@@ -997,6 +997,25 @@ int bman_flush_stockpile(struct bman_pool *pool, u32 flags)
}
EXPORT_SYMBOL(bman_flush_stockpile);
+int bman_query_pools(struct bm_pool_state *state)
+{
+ struct bman_portal *p = get_affine_portal();
+ struct bm_mc_result *mcr;
+ __maybe_unused unsigned long irqflags;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ bm_mc_start(&p->p);
+ bm_mc_commit(&p->p, BM_MCC_VERB_CMD_QUERY);
+ while (!(mcr = bm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & BM_MCR_VERB_CMD_MASK) == BM_MCR_VERB_CMD_QUERY);
+ *state = mcr->query;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ return 0;
+}
+EXPORT_SYMBOL(bman_query_pools);
+
#ifdef CONFIG_FSL_BMAN_CONFIG
u32 bman_query_free_buffers(struct bman_pool *pool)
{
diff --git a/drivers/soc/freescale/bman_debugfs.c b/drivers/soc/freescale/bman_debugfs.c
new file mode 100644
index 0000000..b93e705
--- /dev/null
+++ b/drivers/soc/freescale/bman_debugfs.c
@@ -0,0 +1,119 @@
+/* Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <linux/module.h>
+#include <linux/fsl_bman.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
+
+static struct dentry *dfs_root; /* debugfs root directory */
+
+/*******************************************************************************
+ * Query Buffer Pool State
+ ******************************************************************************/
+static int query_bp_state_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct bm_pool_state state;
+ int i, j;
+ u32 mask;
+
+ memset(&state, 0, sizeof(struct bm_pool_state));
+ ret = bman_query_pools(&state);
+ if (ret) {
+ seq_printf(file, "Error %d\n", ret);
+ return 0;
+ }
+ seq_puts(file, "bp_id free_buffers_avail bp_depleted\n");
+ for (i = 0; i < 2; i++) {
+ mask = 0x80000000;
+ for (j = 0; j < 32; j++) {
+ seq_printf(file,
+ " %-2u %-3s %-3s\n",
+ (i*32)+j,
+ (state.as.state.__state[i] & mask) ? "no" : "yes",
+ (state.ds.state.__state[i] & mask) ? "yes" : "no");
+ mask >>= 1;
+ }
+ }
+ return 0;
+}
+
+static int query_bp_state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, query_bp_state_show, NULL);
+}
+
+static const struct file_operations query_bp_state_fops = {
+ .owner = THIS_MODULE,
+ .open = query_bp_state_open,
+ .read = seq_read,
+ .release = single_release,
+};
+
+static int __init bman_debugfs_module_init(void)
+{
+ int ret = 0;
+ struct dentry *d;
+
+ dfs_root = debugfs_create_dir("bman", NULL);
+
+ if (dfs_root == NULL) {
+ ret = -ENOMEM;
+ pr_err("Cannot create bman debugfs dir\n");
+ goto _return;
+ }
+ d = debugfs_create_file("query_bp_state",
+ S_IRUGO,
+ dfs_root,
+ NULL,
+ &query_bp_state_fops);
+ if (d == NULL) {
+ ret = -ENOMEM;
+ pr_err("Cannot create query_bp_state\n");
+ goto _return;
+ }
+ return 0;
+
+_return:
+ debugfs_remove_recursive(dfs_root);
+ return ret;
+}
+
+static void __exit bman_debugfs_module_exit(void)
+{
+ debugfs_remove_recursive(dfs_root);
+}
+
+
+module_init(bman_debugfs_module_init);
+module_exit(bman_debugfs_module_exit);
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/soc/freescale/dpaa_sys.h b/drivers/soc/freescale/dpaa_sys.h
index 6631b2a..a382591 100644
--- a/drivers/soc/freescale/dpaa_sys.h
+++ b/drivers/soc/freescale/dpaa_sys.h
@@ -54,6 +54,7 @@
#include <linux/ioctl.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
+#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/device.h>
#include <linux/smp.h>
diff --git a/include/linux/fsl_bman.h b/include/linux/fsl_bman.h
index 5883453..78e327f 100644
--- a/include/linux/fsl_bman.h
+++ b/include/linux/fsl_bman.h
@@ -481,6 +481,12 @@ int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num,
*/
int bman_flush_stockpile(struct bman_pool *pool, u32 flags);
+/**
+ * bman_query_pools - Query all buffer pool states
+ * @state: storage for the queried availability and depletion states
+ */
+int bman_query_pools(struct bm_pool_state *state);
+
#ifdef CONFIG_FSL_BMAN_CONFIG
/**
* bman_query_free_buffers - Query how many free buffers are in buffer pool
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 08/10] fsl_qman: Add debugfs support
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (6 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 07/10] fsl_bman: Add debugfs support Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 09/10] fsl_bman: Add HOTPLUG_CPU support Emil Medve
` (2 subsequent siblings)
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel; +Cc: Geoff Thorpe
From: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Change-Id: I59a75a91b289193b5ab1d30a08f60119dc4d7568
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
drivers/soc/freescale/Kconfig | 7 +
drivers/soc/freescale/Makefile | 1 +
drivers/soc/freescale/qman_api.c | 58 ++
drivers/soc/freescale/qman_debugfs.c | 1326 ++++++++++++++++++++++++++++++++++
drivers/soc/freescale/qman_priv.h | 8 +
include/linux/fsl_qman.h | 6 +
6 files changed, 1406 insertions(+)
create mode 100644 drivers/soc/freescale/qman_debugfs.c
diff --git a/drivers/soc/freescale/Kconfig b/drivers/soc/freescale/Kconfig
index f819671..5f683c8 100644
--- a/drivers/soc/freescale/Kconfig
+++ b/drivers/soc/freescale/Kconfig
@@ -124,6 +124,13 @@ config FSL_QMAN_TEST_STASH
across a series of FQs scheduled to different portals (and cpus), with
DQRR, data and context stashing always on.
+config FSL_QMAN_DEBUGFS
+ tristate "QMan debugfs interface"
+ depends on DEBUG_FS
+ default y
+ ---help---
+ This option compiles debugfs code for QMan.
+
# H/w settings that can be hard-coded for now.
config FSL_QMAN_FQD_SZ
int "size of Frame Queue Descriptor region"
diff --git a/drivers/soc/freescale/Makefile b/drivers/soc/freescale/Makefile
index c980dac..aac7cb2 100644
--- a/drivers/soc/freescale/Makefile
+++ b/drivers/soc/freescale/Makefile
@@ -18,3 +18,4 @@ obj-$(CONFIG_FSL_QMAN_TEST) += qman_tester.o
qman_tester-y = qman_test.o
qman_tester-$(CONFIG_FSL_QMAN_TEST_API) += qman_test_api.o
qman_tester-$(CONFIG_FSL_QMAN_TEST_STASH) += qman_test_stash.o
+obj-$(CONFIG_FSL_QMAN_DEBUGFS) += qman_debugfs.o
diff --git a/drivers/soc/freescale/qman_api.c b/drivers/soc/freescale/qman_api.c
index 08dbb36..7556118 100644
--- a/drivers/soc/freescale/qman_api.c
+++ b/drivers/soc/freescale/qman_api.c
@@ -1765,6 +1765,37 @@ int qman_query_wq(u8 query_dedicated, struct qm_mcr_querywq *wq)
}
EXPORT_SYMBOL(qman_query_wq);
+int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt,
+ struct qm_mcr_cgrtestwrite *result)
+{
+ struct qm_mc_command *mcc;
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ mcc = qm_mc_start(&p->p);
+ mcc->cgrtestwrite.cgid = cgr->cgrid;
+ mcc->cgrtestwrite.i_bcnt_hi = (u8)(i_bcnt >> 32);
+ mcc->cgrtestwrite.i_bcnt_lo = (u32)i_bcnt;
+ qm_mc_commit(&p->p, QM_MCC_VERB_CGRTESTWRITE);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_CGRTESTWRITE);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *result = mcr->cgrtestwrite;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res != QM_MCR_RESULT_OK) {
+ pr_err("CGR TEST WRITE failed: %s\n", mcr_result_str(res));
+ return -EIO;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(qman_testwrite_cgr);
+
int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
{
struct qm_mc_command *mcc;
@@ -1793,6 +1824,33 @@ int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
}
EXPORT_SYMBOL(qman_query_cgr);
+int qman_query_congestion(struct qm_mcr_querycongestion *congestion)
+{
+ struct qm_mc_result *mcr;
+ struct qman_portal *p = get_affine_portal();
+ unsigned long irqflags __maybe_unused;
+ u8 res;
+
+ PORTAL_IRQ_LOCK(p, irqflags);
+ qm_mc_start(&p->p);
+ qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCONGESTION);
+ while (!(mcr = qm_mc_result(&p->p)))
+ cpu_relax();
+ DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
+ QM_MCC_VERB_QUERYCONGESTION);
+ res = mcr->result;
+ if (res == QM_MCR_RESULT_OK)
+ *congestion = mcr->querycongestion;
+ PORTAL_IRQ_UNLOCK(p, irqflags);
+ put_affine_portal();
+ if (res != QM_MCR_RESULT_OK) {
+ pr_err("QUERY_CONGESTION failed: %s\n", mcr_result_str(res));
+ return -EIO;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(qman_query_congestion);
+
/* internal function used as a wait_event() expression */
static int set_p_vdqcr(struct qman_portal *p, struct qman_fq *fq, u32 vdqcr)
{
diff --git a/drivers/soc/freescale/qman_debugfs.c b/drivers/soc/freescale/qman_debugfs.c
new file mode 100644
index 0000000..c09f88f
--- /dev/null
+++ b/drivers/soc/freescale/qman_debugfs.c
@@ -0,0 +1,1326 @@
+/* Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "qman_priv.h"
+
+#define MAX_FQID (0x00ffffff)
+#define QM_FQD_BLOCK_SIZE 64
+#define QM_FQD_AR (0xC10)
+
+static u32 fqid_max;
+static u64 qman_ccsr_start;
+static u64 qman_ccsr_size;
+
+static const char * const state_txt[] = {
+ "Out of Service",
+ "Retired",
+ "Tentatively Scheduled",
+ "Truly Scheduled",
+ "Parked",
+ "Active, Active Held or Held Suspended",
+ "Unknown State 6",
+ "Unknown State 7",
+ NULL,
+};
+
+static const u8 fqd_states[] = {
+ QM_MCR_NP_STATE_OOS, QM_MCR_NP_STATE_RETIRED, QM_MCR_NP_STATE_TEN_SCHED,
+ QM_MCR_NP_STATE_TRU_SCHED, QM_MCR_NP_STATE_PARKED,
+ QM_MCR_NP_STATE_ACTIVE};
+
+struct mask_to_text {
+ u16 mask;
+ const char *txt;
+};
+
+struct mask_filter_s {
+ u16 mask;
+ u8 filter;
+};
+
+static const struct mask_filter_s mask_filter[] = {
+ {QM_FQCTRL_PREFERINCACHE, 0},
+ {QM_FQCTRL_PREFERINCACHE, 1},
+ {QM_FQCTRL_HOLDACTIVE, 0},
+ {QM_FQCTRL_HOLDACTIVE, 1},
+ {QM_FQCTRL_AVOIDBLOCK, 0},
+ {QM_FQCTRL_AVOIDBLOCK, 1},
+ {QM_FQCTRL_FORCESFDR, 0},
+ {QM_FQCTRL_FORCESFDR, 1},
+ {QM_FQCTRL_CPCSTASH, 0},
+ {QM_FQCTRL_CPCSTASH, 1},
+ {QM_FQCTRL_CTXASTASHING, 0},
+ {QM_FQCTRL_CTXASTASHING, 1},
+ {QM_FQCTRL_ORP, 0},
+ {QM_FQCTRL_ORP, 1},
+ {QM_FQCTRL_TDE, 0},
+ {QM_FQCTRL_TDE, 1},
+ {QM_FQCTRL_CGE, 0},
+ {QM_FQCTRL_CGE, 1}
+};
+
+static const struct mask_to_text fq_ctrl_text_list[] = {
+ {
+ .mask = QM_FQCTRL_PREFERINCACHE,
+ .txt = "Prefer in cache",
+ },
+ {
+ .mask = QM_FQCTRL_HOLDACTIVE,
+ .txt = "Hold active in portal",
+ },
+ {
+ .mask = QM_FQCTRL_AVOIDBLOCK,
+ .txt = "Avoid Blocking",
+ },
+ {
+ .mask = QM_FQCTRL_FORCESFDR,
+ .txt = "High-priority SFDRs",
+ },
+ {
+ .mask = QM_FQCTRL_CPCSTASH,
+ .txt = "CPC Stash Enable",
+ },
+ {
+ .mask = QM_FQCTRL_CTXASTASHING,
+ .txt = "Context-A stashing",
+ },
+ {
+ .mask = QM_FQCTRL_ORP,
+ .txt = "ORP Enable",
+ },
+ {
+ .mask = QM_FQCTRL_TDE,
+ .txt = "Tail-Drop Enable",
+ },
+ {
+ .mask = QM_FQCTRL_CGE,
+ .txt = "Congestion Group Enable",
+ },
+ {
+ .mask = 0,
+ .txt = NULL,
+ }
+};
+
+static const char *get_fqd_ctrl_text(u16 mask)
+{
+ int i = 0;
+
+ while (fq_ctrl_text_list[i].txt != NULL) {
+ if (fq_ctrl_text_list[i].mask == mask)
+ return fq_ctrl_text_list[i].txt;
+ i++;
+ }
+ return NULL;
+}
+
+static const struct mask_to_text stashing_text_list[] = {
+ {
+ .mask = QM_STASHING_EXCL_CTX,
+ .txt = "FQ Ctx Stash"
+ },
+ {
+ .mask = QM_STASHING_EXCL_DATA,
+ .txt = "Frame Data Stash",
+ },
+ {
+ .mask = QM_STASHING_EXCL_ANNOTATION,
+ .txt = "Frame Annotation Stash",
+ },
+ {
+ .mask = 0,
+ .txt = NULL,
+ },
+};
+
+static int user_input_convert(const char __user *user_buf, size_t count,
+ unsigned long *val)
+{
+ char buf[12];
+
+ if (count > sizeof(buf) - 1)
+ return -EINVAL;
+ if (copy_from_user(buf, user_buf, count))
+ return -EFAULT;
+ buf[count] = '\0';
+ if (kstrtoul(buf, 0, val))
+ return -EINVAL;
+ return 0;
+}
+
+struct line_buffer_fq {
+ u32 buf[8];
+ u32 buf_cnt;
+ int line_cnt;
+};
+
+static void add_to_line_buffer(struct line_buffer_fq *line_buf, u32 fqid,
+ struct seq_file *file)
+{
+ line_buf->buf[line_buf->buf_cnt] = fqid;
+ line_buf->buf_cnt++;
+ if (line_buf->buf_cnt == 8) {
+ /* Buffer is full, flush it */
+ if (line_buf->line_cnt != 0)
+ seq_puts(file, ",\n");
+ seq_printf(file, "0x%06x,0x%06x,0x%06x,0x%06x,0x%06x,"
+ "0x%06x,0x%06x,0x%06x",
+ line_buf->buf[0], line_buf->buf[1], line_buf->buf[2],
+ line_buf->buf[3], line_buf->buf[4], line_buf->buf[5],
+ line_buf->buf[6], line_buf->buf[7]);
+ line_buf->buf_cnt = 0;
+ line_buf->line_cnt++;
+ }
+}
+
+static void flush_line_buffer(struct line_buffer_fq *line_buf,
+ struct seq_file *file)
+{
+ if (line_buf->buf_cnt) {
+ int y = 0;
+ if (line_buf->line_cnt != 0)
+ seq_puts(file, ",\n");
+ while (y != line_buf->buf_cnt) {
+ if (y+1 == line_buf->buf_cnt)
+ seq_printf(file, "0x%06x", line_buf->buf[y]);
+ else
+ seq_printf(file, "0x%06x,", line_buf->buf[y]);
+ y++;
+ }
+ line_buf->line_cnt++;
+ }
+ if (line_buf->line_cnt)
+ seq_putc(file, '\n');
+}
+
+static struct dentry *dfs_root; /* debugfs root directory */
+
+/*******************************************************************************
+ * Query Frame Queue Non Programmable Fields
+ ******************************************************************************/
+struct query_fq_np_fields_data_s {
+ u32 fqid;
+};
+static struct query_fq_np_fields_data_s query_fq_np_fields_data = {
+ .fqid = 1,
+};
+
+static int query_fq_np_fields_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_mcr_queryfq_np np;
+ struct qman_fq fq;
+
+ fq.fqid = query_fq_np_fields_data.fqid;
+ ret = qman_query_fq_np(&fq, &np);
+ if (ret)
+ return ret;
+ /* Print state */
+ seq_printf(file, "Query FQ Non Programmable Fields Result fqid 0x%x\n",
+ fq.fqid);
+ seq_printf(file, " force eligible pending: %s\n",
+ (np.state & QM_MCR_NP_STATE_FE) ? "yes" : "no");
+ seq_printf(file, " retirement pending: %s\n",
+ (np.state & QM_MCR_NP_STATE_R) ? "yes" : "no");
+ seq_printf(file, " state: %s\n",
+ state_txt[np.state & QM_MCR_NP_STATE_MASK]);
+ seq_printf(file, " fq_link: 0x%x\n", np.fqd_link);
+ seq_printf(file, " odp_seq: %u\n", np.odp_seq);
+ seq_printf(file, " orp_nesn: %u\n", np.orp_nesn);
+ seq_printf(file, " orp_ea_hseq: %u\n", np.orp_ea_hseq);
+ seq_printf(file, " orp_ea_tseq: %u\n", np.orp_ea_tseq);
+ seq_printf(file, " orp_ea_hptr: 0x%x\n", np.orp_ea_hptr);
+ seq_printf(file, " orp_ea_tptr: 0x%x\n", np.orp_ea_tptr);
+ seq_printf(file, " pfdr_hptr: 0x%x\n", np.pfdr_hptr);
+ seq_printf(file, " pfdr_tptr: 0x%x\n", np.pfdr_tptr);
+ seq_printf(file, " is: ics_surp contains a %s\n",
+ (np.is) ? "deficit" : "surplus");
+ seq_printf(file, " ics_surp: %u\n", np.ics_surp);
+ seq_printf(file, " byte_cnt: %u\n", np.byte_cnt);
+ seq_printf(file, " frm_cnt: %u\n", np.frm_cnt);
+ seq_printf(file, " ra1_sfdr: 0x%x\n", np.ra1_sfdr);
+ seq_printf(file, " ra2_sfdr: 0x%x\n", np.ra2_sfdr);
+ seq_printf(file, " od1_sfdr: 0x%x\n", np.od1_sfdr);
+ seq_printf(file, " od2_sfdr: 0x%x\n", np.od2_sfdr);
+ seq_printf(file, " od3_sfdr: 0x%x\n", np.od3_sfdr);
+ return 0;
+}
+
+static int query_fq_np_fields_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, query_fq_np_fields_show, NULL);
+}
+
+static ssize_t query_fq_np_fields_write(struct file *f,
+ const char __user *buf, size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > MAX_FQID)
+ return -EINVAL;
+ query_fq_np_fields_data.fqid = (u32)val;
+ return count;
+}
+
+static const struct file_operations query_fq_np_fields_fops = {
+ .owner = THIS_MODULE,
+ .open = query_fq_np_fields_open,
+ .read = seq_read,
+ .write = query_fq_np_fields_write,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * Frame Queue Programmable Fields
+ ******************************************************************************/
+struct query_fq_fields_data_s {
+ u32 fqid;
+};
+
+static struct query_fq_fields_data_s query_fq_fields_data = {
+ .fqid = 1,
+};
+
+static int query_fq_fields_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_fqd fqd;
+ struct qman_fq fq;
+ int i = 0;
+
+ memset(&fqd, 0, sizeof(struct qm_fqd));
+ fq.fqid = query_fq_fields_data.fqid;
+ ret = qman_query_fq(&fq, &fqd);
+ if (ret)
+ return ret;
+ seq_printf(file, "Query FQ Programmable Fields Result fqid 0x%x\n",
+ fq.fqid);
+ seq_printf(file, " orprws: %u\n", fqd.orprws);
+ seq_printf(file, " oa: %u\n", fqd.oa);
+ seq_printf(file, " olws: %u\n", fqd.olws);
+
+ seq_printf(file, " cgid: %u\n", fqd.cgid);
+
+ if ((fqd.fq_ctrl & QM_FQCTRL_MASK) == 0)
+ seq_puts(file, " fq_ctrl: None\n");
+ else {
+ i = 0;
+ seq_puts(file, " fq_ctrl:\n");
+ while (fq_ctrl_text_list[i].txt != NULL) {
+ if ((fqd.fq_ctrl & QM_FQCTRL_MASK) &
+ fq_ctrl_text_list[i].mask)
+ seq_printf(file, " %s\n",
+ fq_ctrl_text_list[i].txt);
+ i++;
+ }
+ }
+ seq_printf(file, " dest_channel: %u\n", fqd.dest.channel);
+ seq_printf(file, " dest_wq: %u\n", fqd.dest.wq);
+ seq_printf(file, " ics_cred: %u\n", fqd.ics_cred);
+ seq_printf(file, " td_mant: %u\n", fqd.td.mant);
+ seq_printf(file, " td_exp: %u\n", fqd.td.exp);
+
+ seq_printf(file, " ctx_b: 0x%x\n", fqd.context_b);
+
+ seq_printf(file, " ctx_a: 0x%llx\n", qm_fqd_stashing_get64(&fqd));
+ /* Any stashing configured */
+ if ((fqd.context_a.stashing.exclusive & 0x7) == 0)
+ seq_puts(file, " ctx_a_stash_exclusive: None\n");
+ else {
+ seq_puts(file, " ctx_a_stash_exclusive:\n");
+ i = 0;
+ while (stashing_text_list[i].txt != NULL) {
+ if ((fqd.fq_ctrl & 0x7) & stashing_text_list[i].mask)
+ seq_printf(file, " %s\n",
+ stashing_text_list[i].txt);
+ i++;
+ }
+ }
+ seq_printf(file, " ctx_a_stash_annotation_cl: %u\n",
+ fqd.context_a.stashing.annotation_cl);
+ seq_printf(file, " ctx_a_stash_data_cl: %u\n",
+ fqd.context_a.stashing.data_cl);
+ seq_printf(file, " ctx_a_stash_context_cl: %u\n",
+ fqd.context_a.stashing.context_cl);
+ return 0;
+}
+
+static int query_fq_fields_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, query_fq_fields_show, NULL);
+}
+
+static ssize_t query_fq_fields_write(struct file *f,
+ const char __user *buf, size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > MAX_FQID)
+ return -EINVAL;
+ query_fq_fields_data.fqid = (u32)val;
+ return count;
+}
+
+static const struct file_operations query_fq_fields_fops = {
+ .owner = THIS_MODULE,
+ .open = query_fq_fields_open,
+ .read = seq_read,
+ .write = query_fq_fields_write,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * Query WQ lengths
+ ******************************************************************************/
+struct query_wq_lengths_data_s {
+ union {
+ u16 channel_wq; /* ignores wq (3 lsbits) */
+ struct {
+ u16 id:13; /* qm_channel */
+ u16 __reserved:3;
+ } __packed channel;
+ };
+};
+static struct query_wq_lengths_data_s query_wq_lengths_data;
+static int query_wq_lengths_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_mcr_querywq wq;
+ int i;
+
+ memset(&wq, 0, sizeof(struct qm_mcr_querywq));
+ wq.channel.id = query_wq_lengths_data.channel.id;
+ ret = qman_query_wq(0, &wq);
+ if (ret)
+ return ret;
+ seq_printf(file, "Query Result For Channel: 0x%x\n", wq.channel.id);
+ for (i = 0; i < 8; i++)
+ /* mask out upper 4 bits since they are not part of length */
+ seq_printf(file, " wq%d_len : %u\n", i, wq.wq_len[i] & 0x0fff);
+ return 0;
+}
+
+static int query_wq_lengths_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, query_wq_lengths_show, NULL);
+}
+
+static ssize_t query_wq_lengths_write(struct file *f,
+ const char __user *buf, size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > 0xfff8)
+ return -EINVAL;
+ query_wq_lengths_data.channel.id = (u16)val;
+ return count;
+}
+
+static const struct file_operations query_wq_lengths_fops = {
+ .owner = THIS_MODULE,
+ .open = query_wq_lengths_open,
+ .read = seq_read,
+ .write = query_wq_lengths_write,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * Query CGR
+ ******************************************************************************/
+struct query_cgr_s {
+ u8 cgid;
+};
+static struct query_cgr_s query_cgr_data;
+
+static int query_cgr_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_mcr_querycgr cgrd;
+ struct qman_cgr cgr;
+ int i, j;
+ u32 mask;
+
+ memset(&cgr, 0, sizeof(cgr));
+ memset(&cgrd, 0, sizeof(cgrd));
+ cgr.cgrid = query_cgr_data.cgid;
+ ret = qman_query_cgr(&cgr, &cgrd);
+ if (ret)
+ return ret;
+ seq_printf(file, "Query CGR id 0x%x\n", cgr.cgrid);
+ seq_printf(file, " wr_parm_g MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ cgrd.cgr.wr_parm_g.MA, cgrd.cgr.wr_parm_g.Mn,
+ cgrd.cgr.wr_parm_g.SA, cgrd.cgr.wr_parm_g.Sn,
+ cgrd.cgr.wr_parm_g.Pn);
+
+ seq_printf(file, " wr_parm_y MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ cgrd.cgr.wr_parm_y.MA, cgrd.cgr.wr_parm_y.Mn,
+ cgrd.cgr.wr_parm_y.SA, cgrd.cgr.wr_parm_y.Sn,
+ cgrd.cgr.wr_parm_y.Pn);
+
+ seq_printf(file, " wr_parm_r MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ cgrd.cgr.wr_parm_r.MA, cgrd.cgr.wr_parm_r.Mn,
+ cgrd.cgr.wr_parm_r.SA, cgrd.cgr.wr_parm_r.Sn,
+ cgrd.cgr.wr_parm_r.Pn);
+
+ seq_printf(file, " wr_en_g: %u, wr_en_y: %u, we_en_r: %u\n",
+ cgrd.cgr.wr_en_g, cgrd.cgr.wr_en_y, cgrd.cgr.wr_en_r);
+
+ seq_printf(file, " cscn_en: %u\n", cgrd.cgr.cscn_en);
+ if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
+ seq_puts(file, " cscn_targ_dcp:\n");
+ mask = 0x80000000;
+ for (i = 0; i < 32; i++) {
+ if (cgrd.cgr.cscn_targ & mask)
+ seq_printf(file, " send CSCN to dcp %u\n",
+ (31 - i));
+ mask >>= 1;
+ }
+
+ seq_puts(file, " cscn_targ_swp:\n");
+ for (i = 0; i < 4; i++) {
+ mask = 0x80000000;
+ for (j = 0; j < 32; j++) {
+ if (cgrd.cscn_targ_swp[i] & mask)
+ seq_printf(file, " send CSCN to swp"
+ " %u\n", (127 - (i * 32) - j));
+ mask >>= 1;
+ }
+ }
+ } else {
+ seq_printf(file, " cscn_targ: %u\n", cgrd.cgr.cscn_targ);
+ }
+ seq_printf(file, " cstd_en: %u\n", cgrd.cgr.cstd_en);
+ seq_printf(file, " cs: %u\n", cgrd.cgr.cs);
+
+ seq_printf(file, " cs_thresh_TA: %u, cs_thresh_Tn: %u\n",
+ cgrd.cgr.cs_thres.TA, cgrd.cgr.cs_thres.Tn);
+
+ seq_printf(file, " mode: %s\n",
+ (cgrd.cgr.mode & QMAN_CGR_MODE_FRAME) ?
+ "frame count" : "byte count");
+ seq_printf(file, " i_bcnt: %llu\n", qm_mcr_querycgr_i_get64(&cgrd));
+ seq_printf(file, " a_bcnt: %llu\n", qm_mcr_querycgr_a_get64(&cgrd));
+
+ return 0;
+}
+
+static int query_cgr_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, query_cgr_show, NULL);
+}
+
+static ssize_t query_cgr_write(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > 0xff)
+ return -EINVAL;
+ query_cgr_data.cgid = (u8)val;
+ return count;
+}
+
+static const struct file_operations query_cgr_fops = {
+ .owner = THIS_MODULE,
+ .open = query_cgr_open,
+ .read = seq_read,
+ .write = query_cgr_write,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * Test Write CGR
+ ******************************************************************************/
+struct test_write_cgr_s {
+ u64 i_bcnt;
+ u8 cgid;
+};
+static struct test_write_cgr_s test_write_cgr_data;
+
+static int testwrite_cgr_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_mcr_cgrtestwrite result;
+ struct qman_cgr cgr;
+ u64 i_bcnt;
+
+ memset(&cgr, 0, sizeof(struct qman_cgr));
+ memset(&result, 0, sizeof(struct qm_mcr_cgrtestwrite));
+ cgr.cgrid = test_write_cgr_data.cgid;
+ i_bcnt = test_write_cgr_data.i_bcnt;
+ ret = qman_testwrite_cgr(&cgr, i_bcnt, &result);
+ if (ret)
+ return ret;
+ seq_printf(file, "CGR Test Write CGR id 0x%x\n", cgr.cgrid);
+ seq_printf(file, " wr_parm_g MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ result.cgr.wr_parm_g.MA, result.cgr.wr_parm_g.Mn,
+ result.cgr.wr_parm_g.SA, result.cgr.wr_parm_g.Sn,
+ result.cgr.wr_parm_g.Pn);
+ seq_printf(file, " wr_parm_y MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ result.cgr.wr_parm_y.MA, result.cgr.wr_parm_y.Mn,
+ result.cgr.wr_parm_y.SA, result.cgr.wr_parm_y.Sn,
+ result.cgr.wr_parm_y.Pn);
+ seq_printf(file, " wr_parm_r MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+ result.cgr.wr_parm_r.MA, result.cgr.wr_parm_r.Mn,
+ result.cgr.wr_parm_r.SA, result.cgr.wr_parm_r.Sn,
+ result.cgr.wr_parm_r.Pn);
+ seq_printf(file, " wr_en_g: %u, wr_en_y: %u, we_en_r: %u\n",
+ result.cgr.wr_en_g, result.cgr.wr_en_y, result.cgr.wr_en_r);
+ seq_printf(file, " cscn_en: %u\n", result.cgr.cscn_en);
+ seq_printf(file, " cscn_targ: %u\n", result.cgr.cscn_targ);
+ seq_printf(file, " cstd_en: %u\n", result.cgr.cstd_en);
+ seq_printf(file, " cs: %u\n", result.cgr.cs);
+ seq_printf(file, " cs_thresh_TA: %u, cs_thresh_Tn: %u\n",
+ result.cgr.cs_thres.TA, result.cgr.cs_thres.Tn);
+
+ /* Add Mode for Si 2 */
+ seq_printf(file, " mode: %s\n",
+ (result.cgr.mode & QMAN_CGR_MODE_FRAME) ?
+ "frame count" : "byte count");
+
+ seq_printf(file, " i_bcnt: %llu\n",
+ qm_mcr_cgrtestwrite_i_get64(&result));
+ seq_printf(file, " a_bcnt: %llu\n",
+ qm_mcr_cgrtestwrite_a_get64(&result));
+ seq_printf(file, " wr_prob_g: %u\n", result.wr_prob_g);
+ seq_printf(file, " wr_prob_y: %u\n", result.wr_prob_y);
+ seq_printf(file, " wr_prob_r: %u\n", result.wr_prob_r);
+ return 0;
+}
+
+static int testwrite_cgr_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, testwrite_cgr_show, NULL);
+}
+
+static const struct file_operations testwrite_cgr_fops = {
+ .owner = THIS_MODULE,
+ .open = testwrite_cgr_open,
+ .read = seq_read,
+ .release = single_release,
+};
+
+
+static int testwrite_cgr_ibcnt_show(struct seq_file *file, void *offset)
+{
+ seq_printf(file, "i_bcnt: %llu\n", test_write_cgr_data.i_bcnt);
+ return 0;
+}
+static int testwrite_cgr_ibcnt_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, testwrite_cgr_ibcnt_show, NULL);
+}
+
+static ssize_t testwrite_cgr_ibcnt_write(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ test_write_cgr_data.i_bcnt = val;
+ return count;
+}
+
+static const struct file_operations teswrite_cgr_ibcnt_fops = {
+ .owner = THIS_MODULE,
+ .open = testwrite_cgr_ibcnt_open,
+ .read = seq_read,
+ .write = testwrite_cgr_ibcnt_write,
+ .release = single_release,
+};
+
+static int testwrite_cgr_cgrid_show(struct seq_file *file, void *offset)
+{
+ seq_printf(file, "cgrid: %u\n", (u32)test_write_cgr_data.cgid);
+ return 0;
+}
+static int testwrite_cgr_cgrid_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, testwrite_cgr_cgrid_show, NULL);
+}
+
+static ssize_t testwrite_cgr_cgrid_write(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > 0xff)
+ return -EINVAL;
+ test_write_cgr_data.cgid = (u8)val;
+ return count;
+}
+
+static const struct file_operations teswrite_cgr_cgrid_fops = {
+ .owner = THIS_MODULE,
+ .open = testwrite_cgr_cgrid_open,
+ .read = seq_read,
+ .write = testwrite_cgr_cgrid_write,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * Query Congestion State
+ ******************************************************************************/
+static int query_congestion_show(struct seq_file *file, void *offset)
+{
+ int ret;
+ struct qm_mcr_querycongestion cs;
+ int i, j, in_cong = 0;
+ u32 mask;
+
+ memset(&cs, 0, sizeof(struct qm_mcr_querycongestion));
+ ret = qman_query_congestion(&cs);
+ if (ret)
+ return ret;
+ seq_puts(file, "Query Congestion Result\n");
+ for (i = 0; i < 8; i++) {
+ mask = 0x80000000;
+ for (j = 0; j < 32; j++) {
+ if (cs.state.__state[i] & mask) {
+ in_cong = 1;
+ seq_printf(file, " cg %u: %s\n", (i*32)+j,
+ "in congestion");
+ }
+ mask >>= 1;
+ }
+ }
+ if (!in_cong)
+ seq_puts(file, " All congestion groups not congested.\n");
+ return 0;
+}
+
+static int query_congestion_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, query_congestion_show, NULL);
+}
+
+static const struct file_operations query_congestion_fops = {
+ .owner = THIS_MODULE,
+ .open = query_congestion_open,
+ .read = seq_read,
+ .release = single_release,
+};
+
+/*******************************************************************************
+ * QMan register
+ ******************************************************************************/
+struct qman_register_s {
+ u32 val;
+};
+static struct qman_register_s qman_register_data;
+
+static void init_ccsrmempeek(void)
+{
+ struct device_node *dn;
+ const u32 *regaddr_p;
+
+ dn = of_find_compatible_node(NULL, NULL, "fsl,qman");
+ if (!dn) {
+ pr_info("No fsl,qman node\n");
+ return;
+ }
+ regaddr_p = of_get_address(dn, 0, &qman_ccsr_size, NULL);
+ if (!regaddr_p) {
+ of_node_put(dn);
+ return;
+ }
+ qman_ccsr_start = of_translate_address(dn, regaddr_p);
+ of_node_put(dn);
+}
+/* This function provides access to QMan ccsr memory map */
+static int qman_ccsrmempeek(u32 *val, u32 offset)
+{
+ void __iomem *addr;
+ u64 phys_addr;
+
+ if (!qman_ccsr_start)
+ return -EINVAL;
+
+ if (offset > (qman_ccsr_size - sizeof(u32)))
+ return -EINVAL;
+
+ phys_addr = qman_ccsr_start + offset;
+ addr = ioremap(phys_addr, sizeof(u32));
+ if (!addr) {
+ pr_err("ccsrmempeek, ioremap failed\n");
+ return -EINVAL;
+ }
+ *val = in_be32(addr);
+ iounmap(addr);
+ return 0;
+}
+
+static int qman_ccsrmempeek_show(struct seq_file *file, void *offset)
+{
+ u32 b;
+
+ qman_ccsrmempeek(&b, qman_register_data.val);
+ seq_printf(file, "QMan register offset = 0x%x\n",
+ qman_register_data.val);
+ seq_printf(file, "value = 0x%08x\n", b);
+
+ return 0;
+}
+
+static int qman_ccsrmempeek_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_ccsrmempeek_show, NULL);
+}
+
+static ssize_t qman_ccsrmempeek_write(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ /* multiple of 4 */
+ if (val > (qman_ccsr_size - sizeof(u32))) {
+ pr_info("Input 0x%lx > 0x%llx\n",
+ val, (qman_ccsr_size - sizeof(u32)));
+ return -EINVAL;
+ }
+ if (val & 0x3) {
+ pr_info("Input 0x%lx not multiple of 4\n", val);
+ return -EINVAL;
+ }
+ qman_register_data.val = val;
+ return count;
+}
+
+static const struct file_operations qman_ccsrmempeek_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_ccsrmempeek_open,
+ .read = seq_read,
+ .write = qman_ccsrmempeek_write,
+};
+
+/*******************************************************************************
+ * QMan state
+ ******************************************************************************/
+static int qman_fqd_state_show(struct seq_file *file, void *offset)
+{
+ struct qm_mcr_queryfq_np np;
+ struct qman_fq fq;
+ struct line_buffer_fq line_buf;
+ int ret, i;
+ u8 *state = file->private;
+ u32 qm_fq_state_cnt[ARRAY_SIZE(fqd_states)];
+
+ memset(qm_fq_state_cnt, 0, sizeof(qm_fq_state_cnt));
+ memset(&line_buf, 0, sizeof(line_buf));
+
+ seq_printf(file, "List of fq ids in state: %s\n", state_txt[*state]);
+
+ for (i = 1; i < fqid_max; i++) {
+ fq.fqid = i;
+ ret = qman_query_fq_np(&fq, &np);
+ if (ret)
+ return ret;
+ if (*state == (np.state & QM_MCR_NP_STATE_MASK))
+ add_to_line_buffer(&line_buf, fq.fqid, file);
+ /* Keep a summary count of all states */
+ if ((np.state & QM_MCR_NP_STATE_MASK) < ARRAY_SIZE(fqd_states))
+ qm_fq_state_cnt[(np.state & QM_MCR_NP_STATE_MASK)]++;
+ }
+ flush_line_buffer(&line_buf, file);
+
+ for (i = 0; i < ARRAY_SIZE(fqd_states); i++) {
+ seq_printf(file, "%s count = %u\n", state_txt[i],
+ qm_fq_state_cnt[i]);
+ }
+ return 0;
+}
+
+static int qman_fqd_state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_fqd_state_show, inode->i_private);
+}
+
+static const struct file_operations qman_fqd_state_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_fqd_state_open,
+ .read = seq_read,
+};
+
+static int qman_fqd_ctrl_show(struct seq_file *file, void *offset)
+{
+ struct qm_fqd fqd;
+ struct qman_fq fq;
+ u32 fq_en_cnt = 0, fq_di_cnt = 0;
+ int ret, i;
+ struct mask_filter_s *data = file->private;
+ const char *ctrl_txt = get_fqd_ctrl_text(data->mask);
+ struct line_buffer_fq line_buf;
+
+ memset(&line_buf, 0, sizeof(line_buf));
+ seq_printf(file, "List of fq ids with: %s :%s\n",
+ ctrl_txt, (data->filter) ? "enabled" : "disabled");
+ for (i = 1; i < fqid_max; i++) {
+ fq.fqid = i;
+ memset(&fqd, 0, sizeof(struct qm_fqd));
+ ret = qman_query_fq(&fq, &fqd);
+ if (ret)
+ return ret;
+ if (data->filter) {
+ if (fqd.fq_ctrl & data->mask)
+ add_to_line_buffer(&line_buf, fq.fqid, file);
+ } else {
+ if (!(fqd.fq_ctrl & data->mask))
+ add_to_line_buffer(&line_buf, fq.fqid, file);
+ }
+ if (fqd.fq_ctrl & data->mask)
+ fq_en_cnt++;
+ else
+ fq_di_cnt++;
+ }
+ flush_line_buffer(&line_buf, file);
+
+ seq_printf(file, "Total FQD with: %s : enabled = %u\n",
+ ctrl_txt, fq_en_cnt);
+ seq_printf(file, "Total FQD with: %s : disabled = %u\n",
+ ctrl_txt, fq_di_cnt);
+ return 0;
+}
+
+/*******************************************************************************
+ * QMan ctrl CGE, TDE, ORP, CTX, CPC, SFDR, BLOCK, HOLD, CACHE
+ ******************************************************************************/
+static int qman_fqd_ctrl_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_fqd_ctrl_show, inode->i_private);
+}
+
+static const struct file_operations qman_fqd_ctrl_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_fqd_ctrl_open,
+ .read = seq_read,
+};
+
+/*******************************************************************************
+ * QMan ctrl summary
+ ******************************************************************************/
+/*******************************************************************************
+ * QMan summary state
+ ******************************************************************************/
+static int qman_fqd_non_prog_summary_show(struct seq_file *file, void *offset)
+{
+ struct qm_mcr_queryfq_np np;
+ struct qman_fq fq;
+ int ret, i;
+ u32 qm_fq_state_cnt[ARRAY_SIZE(fqd_states)];
+
+ memset(qm_fq_state_cnt, 0, sizeof(qm_fq_state_cnt));
+
+ for (i = 1; i < fqid_max; i++) {
+ fq.fqid = i;
+ ret = qman_query_fq_np(&fq, &np);
+ if (ret)
+ return ret;
+ /* Keep a summary count of all states */
+ if ((np.state & QM_MCR_NP_STATE_MASK) < ARRAY_SIZE(fqd_states))
+ qm_fq_state_cnt[(np.state & QM_MCR_NP_STATE_MASK)]++;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(fqd_states); i++) {
+ seq_printf(file, "%s count = %u\n", state_txt[i],
+ qm_fq_state_cnt[i]);
+ }
+ return 0;
+}
+
+static int qman_fqd_prog_summary_show(struct seq_file *file, void *offset)
+{
+ struct qm_fqd fqd;
+ struct qman_fq fq;
+ int ret, i , j;
+ u32 qm_prog_cnt[ARRAY_SIZE(mask_filter)/2];
+
+ memset(qm_prog_cnt, 0, sizeof(qm_prog_cnt));
+
+ for (i = 1; i < fqid_max; i++) {
+ memset(&fqd, 0, sizeof(struct qm_fqd));
+ fq.fqid = i;
+ ret = qman_query_fq(&fq, &fqd);
+ if (ret)
+ return ret;
+ /* Keep a summary count of all states */
+ for (j = 0; j < ARRAY_SIZE(mask_filter); j += 2)
+ if ((fqd.fq_ctrl & QM_FQCTRL_MASK) &
+ mask_filter[j].mask)
+ qm_prog_cnt[j/2]++;
+ }
+ for (i = 0; i < ARRAY_SIZE(mask_filter) / 2; i++) {
+ seq_printf(file, "%s count = %u\n",
+ get_fqd_ctrl_text(mask_filter[i*2].mask),
+ qm_prog_cnt[i]);
+ }
+ return 0;
+}
+
+static int qman_fqd_summary_show(struct seq_file *file, void *offset)
+{
+ int ret;
+
+ /* Display summary of non programmable fields */
+ ret = qman_fqd_non_prog_summary_show(file, offset);
+ if (ret)
+ return ret;
+ seq_puts(file, "-----------------------------------------\n");
+ /* Display programmable fields */
+ ret = qman_fqd_prog_summary_show(file, offset);
+ if (ret)
+ return ret;
+ return 0;
+}
+
+static int qman_fqd_summary_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_fqd_summary_show, NULL);
+}
+
+static const struct file_operations qman_fqd_summary_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_fqd_summary_open,
+ .read = seq_read,
+};
+
+/*******************************************************************************
+ * QMan destination work queue
+ ******************************************************************************/
+struct qman_dest_wq_s {
+ u16 wq_id;
+};
+static struct qman_dest_wq_s qman_dest_wq_data = {
+ .wq_id = 0,
+};
+
+static int qman_fqd_dest_wq_show(struct seq_file *file, void *offset)
+{
+ struct qm_fqd fqd;
+ struct qman_fq fq;
+ int ret, i;
+ u16 *wq, wq_id = qman_dest_wq_data.wq_id;
+ struct line_buffer_fq line_buf;
+
+ memset(&line_buf, 0, sizeof(line_buf));
+ /* use vmalloc : need to allocate large memory region and don't
+ * require the memory to be physically contiguous. */
+ wq = vzalloc(sizeof(u16) * (0xFFFF+1));
+ if (!wq)
+ return -ENOMEM;
+
+ seq_printf(file, "List of fq ids with destination work queue id"
+ " = 0x%x\n", wq_id);
+
+ for (i = 1; i < fqid_max; i++) {
+ fq.fqid = i;
+ memset(&fqd, 0, sizeof(struct qm_fqd));
+ ret = qman_query_fq(&fq, &fqd);
+ if (ret) {
+ vfree(wq);
+ return ret;
+ }
+ if (wq_id == fqd.dest_wq)
+ add_to_line_buffer(&line_buf, fq.fqid, file);
+ wq[fqd.dest_wq]++;
+ }
+ flush_line_buffer(&line_buf, file);
+
+ seq_puts(file, "Summary of all FQD destination work queue values\n");
+ for (i = 0; i < 0xFFFF; i++) {
+ if (wq[i])
+ seq_printf(file, "Channel: 0x%x WQ: 0x%x WQ_ID: 0x%x, "
+ "count = %u\n", i >> 3, i & 0x3, i, wq[i]);
+ }
+ vfree(wq);
+ return 0;
+}
+
+static ssize_t qman_fqd_dest_wq_write(struct file *f, const char __user *buf,
+ size_t count, loff_t *off)
+{
+ int ret;
+ unsigned long val;
+
+ ret = user_input_convert(buf, count, &val);
+ if (ret)
+ return ret;
+ if (val > 0xFFFF)
+ return -EINVAL;
+ qman_dest_wq_data.wq_id = val;
+ return count;
+}
+
+static int qman_fqd_dest_wq_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_fqd_dest_wq_show, NULL);
+}
+
+static const struct file_operations qman_fqd_dest_wq_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_fqd_dest_wq_open,
+ .read = seq_read,
+ .write = qman_fqd_dest_wq_write,
+};
+
+/*******************************************************************************
+ * QMan Intra-Class Scheduling Credit
+ ******************************************************************************/
+static int qman_fqd_cred_show(struct seq_file *file, void *offset)
+{
+ struct qm_fqd fqd;
+ struct qman_fq fq;
+ int ret, i;
+ u32 fq_cnt = 0;
+ struct line_buffer_fq line_buf;
+
+ memset(&line_buf, 0, sizeof(line_buf));
+ seq_puts(file, "List of fq ids with Intra-Class Scheduling Credit > 0"
+ "\n");
+
+ for (i = 1; i < fqid_max; i++) {
+ fq.fqid = i;
+ memset(&fqd, 0, sizeof(struct qm_fqd));
+ ret = qman_query_fq(&fq, &fqd);
+ if (ret)
+ return ret;
+ if (fqd.ics_cred > 0) {
+ add_to_line_buffer(&line_buf, fq.fqid, file);
+ fq_cnt++;
+ }
+ }
+ flush_line_buffer(&line_buf, file);
+
+ seq_printf(file, "Total FQD with ics_cred > 0 = %d\n", fq_cnt);
+ return 0;
+}
+
+static int qman_fqd_cred_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, qman_fqd_cred_show, NULL);
+}
+
+static const struct file_operations qman_fqd_cred_fops = {
+ .owner = THIS_MODULE,
+ .open = qman_fqd_cred_open,
+ .read = seq_read,
+};
+
+/* helper macros used in qman_debugfs_module_init */
+#define QMAN_DBGFS_ENTRY(name, mode, parent, data, fops) \
+ do { \
+ d = debugfs_create_file(name, \
+ mode, parent, \
+ data, \
+ fops); \
+ if (d == NULL) { \
+ ret = -ENOMEM; \
+ goto _return; \
+ } \
+ } while (0)
+
+/* dfs_root as parent */
+#define QMAN_DBGFS_ENTRY_ROOT(name, mode, data, fops) \
+ QMAN_DBGFS_ENTRY(name, mode, dfs_root, data, fops)
+
+/* fqd_root as parent */
+#define QMAN_DBGFS_ENTRY_FQDROOT(name, mode, data, fops) \
+ QMAN_DBGFS_ENTRY(name, mode, fqd_root, data, fops)
+
+/* fqd state */
+#define QMAN_DBGFS_ENTRY_FQDSTATE(name, index) \
+ QMAN_DBGFS_ENTRY_FQDROOT(name, S_IRUGO, \
+ (void *)&mask_filter[index], &qman_fqd_ctrl_fops)
+
+static int __init qman_debugfs_module_init(void)
+{
+ int ret = 0;
+ struct dentry *d, *fqd_root;
+ u32 reg;
+
+ fqid_max = 0;
+ init_ccsrmempeek();
+ if (qman_ccsr_start) {
+ if (!qman_ccsrmempeek(®, QM_FQD_AR)) {
+ /* extract the size of the FQD window */
+ reg = reg & 0x3f;
+ /* calculate valid frame queue descriptor range */
+ fqid_max = (1 << (reg + 1)) / QM_FQD_BLOCK_SIZE;
+ }
+ }
+ dfs_root = debugfs_create_dir("qman", NULL);
+ fqd_root = debugfs_create_dir("fqd", dfs_root);
+ if (dfs_root == NULL || fqd_root == NULL) {
+ ret = -ENOMEM;
+ pr_err("Cannot create qman/fqd debugfs dir\n");
+ goto _return;
+ }
+ if (fqid_max) {
+ QMAN_DBGFS_ENTRY_ROOT("ccsrmempeek", S_IRUGO | S_IWUGO,
+ NULL, &qman_ccsrmempeek_fops);
+ }
+ QMAN_DBGFS_ENTRY_ROOT("query_fq_np_fields", S_IRUGO | S_IWUGO,
+ &query_fq_np_fields_data, &query_fq_np_fields_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("query_fq_fields", S_IRUGO | S_IWUGO,
+ &query_fq_fields_data, &query_fq_fields_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("query_wq_lengths", S_IRUGO | S_IWUGO,
+ &query_wq_lengths_data, &query_wq_lengths_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("query_cgr", S_IRUGO | S_IWUGO,
+ &query_cgr_data, &query_cgr_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("query_congestion", S_IRUGO,
+ NULL, &query_congestion_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr", S_IRUGO,
+ NULL, &testwrite_cgr_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr_cgrid", S_IRUGO | S_IWUGO,
+ NULL, &teswrite_cgr_cgrid_fops);
+
+ QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr_ibcnt", S_IRUGO | S_IWUGO,
+ NULL, &teswrite_cgr_ibcnt_fops);
+
+ /* Create files with fqd_root as parent */
+
+ QMAN_DBGFS_ENTRY_FQDROOT("stateoos", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_OOS], &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("state_retired", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_RETIRED],
+ &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("state_tentatively_sched", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_TEN_SCHED],
+ &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("state_truly_sched", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_TRU_SCHED],
+ &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("state_parked", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_PARKED],
+ &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("state_active", S_IRUGO,
+ (void *)&fqd_states[QM_MCR_NP_STATE_ACTIVE],
+ &qman_fqd_state_fops);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("cge_enable", 17);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("cge_disable", 16);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("tde_enable", 15);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("tde_disable", 14);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("orp_enable", 13);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("orp_disable", 12);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("ctx_a_stashing_enable", 11);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("ctx_a_stashing_disable", 10);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("cpc_enable", 9);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("cpc_disable", 8);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("sfdr_enable", 7);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("sfdr_disable", 6);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("avoid_blocking_enable", 5);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("avoid_blocking_disable", 4);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("hold_active_enable", 3);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("hold_active_disable", 2);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("prefer_in_cache_enable", 1);
+
+ QMAN_DBGFS_ENTRY_FQDSTATE("prefer_in_cache_disable", 0);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("summary", S_IRUGO,
+ NULL, &qman_fqd_summary_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("wq", S_IRUGO | S_IWUGO,
+ NULL, &qman_fqd_dest_wq_fops);
+
+ QMAN_DBGFS_ENTRY_FQDROOT("cred", S_IRUGO,
+ NULL, &qman_fqd_cred_fops);
+
+ return 0;
+
+_return:
+ debugfs_remove_recursive(dfs_root);
+ return ret;
+}
+
+static void __exit qman_debugfs_module_exit(void)
+{
+ debugfs_remove_recursive(dfs_root);
+}
+
+module_init(qman_debugfs_module_init);
+module_exit(qman_debugfs_module_exit);
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/soc/freescale/qman_priv.h b/drivers/soc/freescale/qman_priv.h
index 2a5fa2d..217e947 100644
--- a/drivers/soc/freescale/qman_priv.h
+++ b/drivers/soc/freescale/qman_priv.h
@@ -153,6 +153,14 @@ struct qman_portal *qman_create_affine_slave(struct qman_portal *redirect,
const struct qm_portal_config *qman_destroy_affine_portal(void);
void qman_destroy_portal(struct qman_portal *qm);
+/* This CGR feature is supported by h/w and required by unit-tests and the
+ * debugfs hooks, so is implemented in the driver. However it allows an explicit
+ * corruption of h/w fields by s/w that are usually incorruptible (because the
+ * counters are usually maintained entirely within h/w). As such, we declare
+ * this API internally. */
+int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt,
+ struct qm_mcr_cgrtestwrite *result);
+
#ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
/* If the fq object pointer is greater than the size of context_b field,
* than a lookup table is required. */
diff --git a/include/linux/fsl_qman.h b/include/linux/fsl_qman.h
index f52e919..f3650c5 100644
--- a/include/linux/fsl_qman.h
+++ b/include/linux/fsl_qman.h
@@ -1819,6 +1819,12 @@ int qman_modify_cgr(struct qman_cgr *cgr, u32 flags,
int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *result);
/**
+ * qman_query_congestion - Queries the state of all congestion groups
+ * @congestion: storage for the queried state of all congestion groups
+ */
+int qman_query_congestion(struct qm_mcr_querycongestion *congestion);
+
+/**
* qman_alloc_cgrid_range - Allocate a contiguous range of CGR IDs
* @result: is set by the API to the base CGR ID of the allocated range
* @count: the number of CGR IDs required
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 09/10] fsl_bman: Add HOTPLUG_CPU support
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (7 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 08/10] fsl_qman: " Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-16 15:46 ` [RFC v2 10/10] fsl_qman: " Emil Medve
2015-02-18 17:45 ` [RFC v2 00/10] Freescale DPAA B/QMan drivers Kumar Gala
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel
From: Hai-Ying Wang <Haiying.Wang@freescale.com>
Change-Id: I863d5c15c7f35f9de4ea3d985e4ff467167924b7
Signed-off-by: Hai-Ying Wang <Haiying.Wang@freescale.com>
---
drivers/soc/freescale/bman_portal.c | 45 ++++++++++++++++++++++++++++++++++++-
1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/soc/freescale/bman_portal.c b/drivers/soc/freescale/bman_portal.c
index a91081c..f484a91 100644
--- a/drivers/soc/freescale/bman_portal.c
+++ b/drivers/soc/freescale/bman_portal.c
@@ -30,6 +30,9 @@
*/
#include "bman_priv.h"
+#ifdef CONFIG_HOTPLUG_CPU
+#include <linux/cpu.h>
+#endif
/*
* Global variables of the max portal/pool number this bman version supported
@@ -180,7 +183,7 @@ static int __init parse_bportals(char *str)
}
__setup("bportals=", parse_bportals);
-static void bman_offline_cpu(unsigned int cpu)
+static void __cold bman_offline_cpu(unsigned int cpu)
{
struct bman_portal *p = (struct bman_portal *)affine_bportals[cpu];
const struct bm_portal_config *pcfg;
@@ -192,6 +195,42 @@ static void bman_offline_cpu(unsigned int cpu)
}
}
+#ifdef CONFIG_HOTPLUG_CPU
+static void __cold bman_online_cpu(unsigned int cpu)
+{
+ struct bman_portal *p = (struct bman_portal *)affine_bportals[cpu];
+ const struct bm_portal_config *pcfg;
+
+ if (p) {
+ pcfg = bman_get_bm_portal_config(p);
+ if (pcfg)
+ irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(cpu));
+ }
+}
+
+static int __cold bman_hotplug_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ bman_online_cpu(cpu);
+ break;
+ case CPU_DOWN_PREPARE:
+ case CPU_DOWN_PREPARE_FROZEN:
+ bman_offline_cpu(cpu);
+ }
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block bman_hotplug_cpu_notifier = {
+ .notifier_call = bman_hotplug_cpu_callback,
+};
+#endif /* CONFIG_HOTPLUG_CPU */
+
/* Initialise the BMan driver. The meat of this function deals with portals. The
* following describes the flow of portal-handling, the code "steps" refer to
* this description;
@@ -326,5 +365,9 @@ int __init bman_init(void)
for_each_cpu(cpu, &offline_cpus)
bman_offline_cpu(cpu);
+#ifdef CONFIG_HOTPLUG_CPU
+ register_hotcpu_notifier(&bman_hotplug_cpu_notifier);
+#endif
+
return 0;
}
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* [RFC v2 10/10] fsl_qman: Add HOTPLUG_CPU support
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (8 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 09/10] fsl_bman: Add HOTPLUG_CPU support Emil Medve
@ 2015-02-16 15:46 ` Emil Medve
2015-02-18 17:45 ` [RFC v2 00/10] Freescale DPAA B/QMan drivers Kumar Gala
10 siblings, 0 replies; 15+ messages in thread
From: Emil Medve @ 2015-02-16 15:46 UTC (permalink / raw)
To: linuxppc-dev, linux-kernel
From: Hai-Ying Wang <Haiying.Wang@freescale.com>
Change-Id: Ica4d1b2b0fd3c3ae5e043663febd9f4cb7c762cf
Signed-off-by: Hai-Ying Wang <Haiying.Wang@freescale.com>
---
drivers/soc/freescale/qman_portal.c | 45 +++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/soc/freescale/qman_portal.c b/drivers/soc/freescale/qman_portal.c
index 7216de1..b008b41 100644
--- a/drivers/soc/freescale/qman_portal.c
+++ b/drivers/soc/freescale/qman_portal.c
@@ -30,6 +30,9 @@
*/
#include "qman_priv.h"
+#ifdef CONFIG_HOTPLUG_CPU
+#include <linux/cpu.h>
+#endif
/* Global variable containing revision id (even on non-control plane systems
* where CCSR isn't available) */
@@ -381,6 +384,45 @@ static void qman_offline_cpu(unsigned int cpu)
}
}
+#ifdef CONFIG_HOTPLUG_CPU
+static void qman_online_cpu(unsigned int cpu)
+{
+ struct qman_portal *p;
+ const struct qm_portal_config *pcfg;
+ p = (struct qman_portal *)affine_portals[cpu];
+ if (p) {
+ pcfg = qman_get_qm_portal_config(p);
+ if (pcfg) {
+ irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(cpu));
+ qman_portal_update_sdest(pcfg, cpu);
+ }
+ }
+}
+
+static int __cpuinit qman_hotplug_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ qman_online_cpu(cpu);
+ break;
+ case CPU_DOWN_PREPARE:
+ case CPU_DOWN_PREPARE_FROZEN:
+ qman_offline_cpu(cpu);
+ default:
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block qman_hotplug_cpu_notifier = {
+ .notifier_call = qman_hotplug_cpu_callback,
+};
+#endif /* CONFIG_HOTPLUG_CPU */
+
__init int qman_init(void)
{
struct cpumask slave_cpus;
@@ -499,5 +541,8 @@ __init int qman_init(void)
cpumask_andnot(&offline_cpus, cpu_possible_mask, cpu_online_mask);
for_each_cpu(cpu, &offline_cpus)
qman_offline_cpu(cpu);
+#ifdef CONFIG_HOTPLUG_CPU
+ register_hotcpu_notifier(&qman_hotplug_cpu_notifier);
+#endif
return 0;
}
--
2.3.0
^ permalink raw reply related [flat|nested] 15+ messages in thread* Re: [RFC v2 00/10] Freescale DPAA B/QMan drivers
2015-02-16 15:46 [RFC v2 00/10] Freescale DPAA B/QMan drivers Emil Medve
` (9 preceding siblings ...)
2015-02-16 15:46 ` [RFC v2 10/10] fsl_qman: " Emil Medve
@ 2015-02-18 17:45 ` Kumar Gala
10 siblings, 0 replies; 15+ messages in thread
From: Kumar Gala @ 2015-02-18 17:45 UTC (permalink / raw)
To: Emil Medve; +Cc: linuxppc-dev, linux-kernel
On Feb 16, 2015, at 9:46 AM, Emil Medve <Emilian.Medve@freescale.com> =
wrote:
> v2: Moved out of staging into soc/freescale
>=20
> Hello,
>=20
>=20
> This is the se attempt to publish the . They are
> not to be applied yet. =20
>=20
> These are the Freescale DPAA B/QMan drivers. At this stage, this is =
more or less
> the drivers from the Freescale PowerPC SDK roughly squashed and split =
in a
> sequence of component patches. They still needs some work and cleanup =
before we
> expect to have them applied, but we appreciate early feedback
>=20
> To do: Add a maintainer(s) entry
> Add module(s) support
> Some important clean-ups
>=20
> Cheers,
>=20
>=20
> Geoff Thorpe (8):
> fsl_bman: Add drivers for the Freescale DPAA BMan
> fsl_qman: Add drivers for the Freescale DPAA QMan
> powerpc/mpc85xx: Add platform support for the Freescale DPAA BMan
> powerpc/mpc85xx: Add platform support for the Freescale DPAA QMan
> fsl_bman: Add self-tester
> fsl_qman: Add self-tester
> fsl_bman: Add debugfs support
> fsl_qman: Add debugfs support
>=20
> Hai-Ying Wang (2):
> fsl_bman: Add HOTPLUG_CPU support
> fsl_qman: Add HOTPLUG_CPU support
Really should look at using CMA for memory reservations used by q/bman =
backing store.
- k=
^ permalink raw reply [flat|nested] 15+ messages in thread