[PATCH net-next 3/7] qed: Add support for RoCE hw init

Yuval Mintz
2016-10-01T18:59:57Z

From: Ram Amrani <Ram.Amrani@caviumnetworks.com>

This adds the backbone required for the various HW initalizations
which are necessary for the qedr driver - FW notification, resource
initializations, etc.

Signed-off-by: Ram Amrani <Ram.Amrani@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
---
drivers/net/ethernet/qlogic/qed/Makefile | 1 +
drivers/net/ethernet/qlogic/qed/qed.h | 33 +-
drivers/net/ethernet/qlogic/qed/qed_cxt.c | 6 +
drivers/net/ethernet/qlogic/qed/qed_cxt.h | 6 +
drivers/net/ethernet/qlogic/qed/qed_dev.c | 154 +++++
drivers/net/ethernet/qlogic/qed/qed_main.c | 44 +-
drivers/net/ethernet/qlogic/qed/qed_reg_addr.h | 8 +-
drivers/net/ethernet/qlogic/qed/qed_roce.c | 886 +++++++++++++++++++++++++
drivers/net/ethernet/qlogic/qed/qed_roce.h | 123 ++++
drivers/net/ethernet/qlogic/qed/qed_sp.h | 1 +
drivers/net/ethernet/qlogic/qed/qed_spq.c | 8 +
drivers/net/ethernet/qlogic/qed/qed_sriov.c | 4 +-
drivers/net/ethernet/qlogic/qed/qed_vf.c | 2 +-
include/linux/qed/common_hsi.h | 1 +
include/linux/qed/qed_if.h | 5 +-
include/linux/qed/qed_roce_if.h | 345 ++++++++++
include/linux/qed/rdma_common.h | 1 +
17 files changed, 1620 insertions(+), 8 deletions(-)
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_roce.c
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_roce.h
create mode 100644 include/linux/qed/qed_roce_if.h

diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile
index e067098..cda0af7 100644
--- a/drivers/net/ethernet/qlogic/qed/Makefile
+++ b/drivers/net/ethernet/qlogic/qed/Makefile
@@ -5,3 +5,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
qed_selftest.o qed_dcbx.o qed_debug.o
qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o
qed-$(CONFIG_QED_LL2) += qed_ll2.o
+qed-$(CONFIG_INFINIBAND_QEDR) += qed_roce.o
diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index 91b571a..c5a098a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -35,6 +35,9 @@ extern const struct qed_common_ops qed_common_ops_pass;

#define QED_WFQ_UNIT 100

+#define QED_WID_SIZE (1024)
+#define QED_PF_DEMS_SIZE (4)
+
/* cau states */
enum qed_coalescing_mode {
QED_COAL_MODE_DISABLE,
@@ -50,6 +53,14 @@ enum qed_mcp_protocol_type;
static inline u32 qed_db_addr(u32 cid, u32 DEMS)
{
u32 db_addr = FIELD_VALUE(DB_LEGACY_ADDR_DEMS, DEMS) |
+ (cid * QED_PF_DEMS_SIZE);
+
+ return db_addr;
+}
+
+static inline u32 qed_db_addr_vf(u32 cid, u32 DEMS)
+{
+ u32 db_addr = FIELD_VALUE(DB_LEGACY_ADDR_DEMS, DEMS) |
FIELD_VALUE(DB_LEGACY_ADDR_ICID, cid);

return db_addr;
@@ -152,14 +163,17 @@ enum QED_RESOURCES {
QED_RL,
QED_MAC,
QED_VLAN,
+ QED_RDMA_CNQ_RAM,
QED_ILT,
QED_LL2_QUEUE,
+ QED_RDMA_STATS_QUEUE,
QED_MAX_RESC,
};

enum QED_FEATURE {
QED_PF_L2_QUE,
QED_VF,
+ QED_RDMA_CNQ,
QED_MAX_FEATURES,
};

@@ -364,6 +378,7 @@ struct qed_hwfn {
/* Protocol related */
bool using_ll2;
struct qed_ll2_info *p_ll2_info;
+ struct qed_rdma_info *p_rdma_info;
struct qed_pf_params pf_params;

bool b_rdma_enabled_in_prs;
@@ -402,6 +417,17 @@ struct qed_hwfn {

struct dbg_tools_data dbg_info;

+ /* PWM region specific data */
+ u32 dpi_size;
+ u32 dpi_count;
+
+ /* This is used to calculate the doorbell address */
+ u32 dpi_start_offset;
+
+ /* If one of the following is set then EDPM shouldn't be used */
+ u8 dcbx_no_edpm;
+ u8 db_bar_no_edpm;
+
struct qed_simd_fp_handler simd_proto_handler[64];

#ifdef CONFIG_QED_SRIOV
@@ -435,6 +461,8 @@ struct qed_int_params {
bool fp_initialized;
u8 fp_msix_base;
u8 fp_msix_cnt;
+ u8 rdma_msix_base;
+ u8 rdma_msix_cnt;
};

struct qed_dbg_feature {
@@ -541,7 +569,6 @@ struct qed_dev {

bool b_is_vf;
u32 drv_type;
-
struct qed_eth_stats *reset_stats;
struct qed_fw_data *fw_data;

@@ -574,6 +601,10 @@ struct qed_dev {
#endif

const struct firmware *firmware;
+
+ u32 rdma_max_sge;
+ u32 rdma_max_inline;
+ u32 rdma_max_srq_sge;
};

#define NUM_OF_VFS(dev) MAX_NUM_VFS_BB
diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
index d9bea2a..82370a1 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
@@ -48,7 +48,13 @@
#define TM_ELEM_SIZE 4

/* ILT constants */
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+/* For RoCE we configure to 64K to cover for RoCE max tasks 256K purpose. */
+#define ILT_DEFAULT_HW_P_SIZE 4
+#else
#define ILT_DEFAULT_HW_P_SIZE 3
+#endif
+
#define ILT_PAGE_IN_BYTES(hw_p_size) (1U << ((hw_p_size) + 12))
#define ILT_CFG_REG(cli, reg) PSWRQ2_REG_ ## cli ## _ ## reg ## _RT_OFFSET

diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.h b/drivers/net/ethernet/qlogic/qed/qed_cxt.h
index c6f6f2e..d00ad05 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_cxt.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.h
@@ -170,6 +170,12 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
*/
void qed_cxt_release_cid(struct qed_hwfn *p_hwfn,
u32 cid);
+int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
+ enum qed_cxt_elem_type elem_type, u32 iid);
+u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
+ enum protocol_type type);
+u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
+ enum protocol_type type);

#define QED_CTX_WORKING_MEM 0
#define QED_CTX_FL_MEM 1
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 9a8e153..754f6a9 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -35,9 +35,13 @@
#include "qed_sp.h"
#include "qed_sriov.h"
#include "qed_vf.h"
+#include "qed_roce.h"

static DEFINE_SPINLOCK(qm_lock);

+#define QED_MIN_DPIS (4)
+#define QED_MIN_PWM_REGION (QED_WID_SIZE * QED_MIN_DPIS)
+
/* API common to all protocols */
enum BAR_ID {
BAR_ID_0, /* used for GRC */
@@ -787,6 +791,136 @@ static int qed_hw_init_common(struct qed_hwfn *p_hwfn,
return rc;
}

+static int
+qed_hw_init_dpi_size(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt, u32 pwm_region_size, u32 n_cpus)
+{
+ u32 dpi_page_size_1, dpi_page_size_2, dpi_page_size;
+ u32 dpi_bit_shift, dpi_count;
+ u32 min_dpis;
+
+ /* Calculate DPI size */
+ dpi_page_size_1 = QED_WID_SIZE * n_cpus;
+ dpi_page_size_2 = max_t(u32, QED_WID_SIZE, PAGE_SIZE);
+ dpi_page_size = max_t(u32, dpi_page_size_1, dpi_page_size_2);
+ dpi_page_size = roundup_pow_of_two(dpi_page_size);
+ dpi_bit_shift = ilog2(dpi_page_size / 4096);
+
+ dpi_count = pwm_region_size / dpi_page_size;
+
+ min_dpis = p_hwfn->pf_params.rdma_pf_params.min_dpis;
+ min_dpis = max_t(u32, QED_MIN_DPIS, min_dpis);
+
+ p_hwfn->dpi_size = dpi_page_size;
+ p_hwfn->dpi_count = dpi_count;
+
+ qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_DPI_BIT_SHIFT, dpi_bit_shift);
+
+ if (dpi_count < min_dpis)
+ return -EINVAL;
+
+ return 0;
+}
+
+enum QED_ROCE_EDPM_MODE {
+ QED_ROCE_EDPM_MODE_ENABLE = 0,
+ QED_ROCE_EDPM_MODE_FORCE_ON = 1,
+ QED_ROCE_EDPM_MODE_DISABLE = 2,
+};
+
+static int
+qed_hw_init_pf_doorbell_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+{
+ u32 pwm_regsize, norm_regsize;
+ u32 non_pwm_conn, min_addr_reg1;
+ u32 db_bar_size, n_cpus;
+ u32 roce_edpm_mode;
+ u32 pf_dems_shift;
+ int rc = 0;
+ u8 cond;
+
+ db_bar_size = qed_hw_bar_size(p_hwfn, BAR_ID_1);
+ if (p_hwfn->cdev->num_hwfns > 1)
+ db_bar_size /= 2;
+
+ /* Calculate doorbell regions */
+ non_pwm_conn = qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_CORE) +
+ qed_cxt_get_proto_cid_count(p_hwfn, PROTOCOLID_CORE,
+ NULL) +
+ qed_cxt_get_proto_cid_count(p_hwfn, PROTOCOLID_ETH,
+ NULL);
+ norm_regsize = roundup(QED_PF_DEMS_SIZE * non_pwm_conn, 4096);
+ min_addr_reg1 = norm_regsize / 4096;
+ pwm_regsize = db_bar_size - norm_regsize;
+
+ /* Check that the normal and PWM sizes are valid */
+ if (db_bar_size < norm_regsize) {
+ DP_ERR(p_hwfn->cdev,
+ "Doorbell BAR size 0x%x is too small (normal region is 0x%0x )\n",
+ db_bar_size, norm_regsize);
+ return -EINVAL;
+ }
+
+ if (pwm_regsize < QED_MIN_PWM_REGION) {
+ DP_ERR(p_hwfn->cdev,
+ "PWM region size 0x%0x is too small. Should be at least 0x%0x (Doorbell BAR size is 0x%x and normal region size is 0x%0x)\n",
+ pwm_regsize,
+ QED_MIN_PWM_REGION, db_bar_size, norm_regsize);
+ return -EINVAL;
+ }
+
+ /* Calculate number of DPIs */
+ roce_edpm_mode = p_hwfn->pf_params.rdma_pf_params.roce_edpm_mode;
+ if ((roce_edpm_mode == QED_ROCE_EDPM_MODE_ENABLE) ||
+ ((roce_edpm_mode == QED_ROCE_EDPM_MODE_FORCE_ON))) {
+ /* Either EDPM is mandatory, or we are attempting to allocate a
+ * WID per CPU.
+ */
+ n_cpus = num_active_cpus();
+ rc = qed_hw_init_dpi_size(p_hwfn, p_ptt, pwm_regsize, n_cpus);
+ }
+
+ cond = (rc && (roce_edpm_mode == QED_ROCE_EDPM_MODE_ENABLE)) ||
+ (roce_edpm_mode == QED_ROCE_EDPM_MODE_DISABLE);
+ if (cond || p_hwfn->dcbx_no_edpm) {
+ /* Either EDPM is disabled from user configuration, or it is
+ * disabled via DCBx, or it is not mandatory and we failed to
+ * allocated a WID per CPU.
+ */
+ n_cpus = 1;
+ rc = qed_hw_init_dpi_size(p_hwfn, p_ptt, pwm_regsize, n_cpus);
+
+ if (cond)
+ qed_rdma_dpm_bar(p_hwfn, p_ptt);
+ }
+
+ DP_INFO(p_hwfn,
+ "doorbell bar: normal_region_size=%d, pwm_region_size=%d, dpi_size=%d, dpi_count=%d, roce_edpm=%s\n",
+ norm_regsize,
+ pwm_regsize,
+ p_hwfn->dpi_size,
+ p_hwfn->dpi_count,
+ ((p_hwfn->dcbx_no_edpm) || (p_hwfn->db_bar_no_edpm)) ?
+ "disabled" : "enabled");
+
+ if (rc) {
+ DP_ERR(p_hwfn,
+ "Failed to allocate enough DPIs. Allocated %d but the current minimum is %d.\n",
+ p_hwfn->dpi_count,
+ p_hwfn->pf_params.rdma_pf_params.min_dpis);
+ return -EINVAL;
+ }
+
+ p_hwfn->dpi_start_offset = norm_regsize;
+
+ /* DEMS size is configured log2 of DWORDs, hence the division by 4 */
+ pf_dems_shift = ilog2(QED_PF_DEMS_SIZE / 4);
+ qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_ICID_BIT_SHIFT_NORM, pf_dems_shift);
+ qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_MIN_ADDR_REG1, min_addr_reg1);
+
+ return 0;
+}
+
static int qed_hw_init_port(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt, int hw_mode)
{
@@ -860,6 +994,10 @@ static int qed_hw_init_pf(struct qed_hwfn *p_hwfn,
/* Pure runtime initializations - directly to the HW */
qed_int_igu_init_pure_rt(p_hwfn, p_ptt, true, true);

+ rc = qed_hw_init_pf_doorbell_bar(p_hwfn, p_ptt);
+ if (rc)
+ return rc;
+
if (b_hw_start) {
/* enable interrupts */
qed_int_igu_enable(p_hwfn, p_ptt, int_mode);
@@ -1284,6 +1422,19 @@ static void qed_hw_set_feat(struct qed_hwfn *p_hwfn)
u32 *feat_num = p_hwfn->hw_info.feat_num;
int num_features = 1;

+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+ /* Roce CNQ each requires: 1 status block + 1 CNQ. We divide the
+ * status blocks equally between L2 / RoCE but with consideration as
+ * to how many l2 queues / cnqs we have
+ */
+ if (p_hwfn->hw_info.personality == QED_PCI_ETH_ROCE) {
+ num_features++;
+
+ feat_num[QED_RDMA_CNQ] =
+ min_t(u32, RESC_NUM(p_hwfn, QED_SB) / num_features,
+ RESC_NUM(p_hwfn, QED_RDMA_CNQ_RAM));
+ }
+#endif
feat_num[QED_PF_L2_QUE] = min_t(u32, RESC_NUM(p_hwfn, QED_SB) /
num_features,
RESC_NUM(p_hwfn, QED_L2_QUEUE));
@@ -1325,6 +1476,9 @@ static int qed_hw_get_resc(struct qed_hwfn *p_hwfn)
num_funcs;
resc_num[QED_ILT] = PXP_NUM_ILT_RECORDS_BB / num_funcs;
resc_num[QED_LL2_QUEUE] = MAX_NUM_LL2_RX_QUEUES / num_funcs;
+ resc_num[QED_RDMA_CNQ_RAM] = NUM_OF_CMDQS_CQS / num_funcs;
+ resc_num[QED_RDMA_STATS_QUEUE] = RDMA_NUM_STATISTIC_COUNTERS_BB /
+ num_funcs;

for (i = 0; i < QED_MAX_RESC; i++)
resc_start[i] = resc_num[i] * enabled_func_idx;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 48cdf62..4ee3151 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -33,6 +33,11 @@
#include "qed_hw.h"
#include "qed_selftest.h"

+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+#define QED_ROCE_QPS (8192)
+#define QED_ROCE_DPIS (8)
+#endif
+
static char version[] =
"QLogic FastLinQ 4xxxx Core Module qed " DRV_MODULE_VERSION "\n";

@@ -206,8 +211,8 @@ int qed_fill_dev_info(struct qed_dev *cdev,
dev_info->pci_mem_start = cdev->pci_params.mem_start;
dev_info->pci_mem_end = cdev->pci_params.mem_end;
dev_info->pci_irq = cdev->pci_params.irq;
- dev_info->rdma_supported =
- (cdev->hwfns[0].hw_info.personality == QED_PCI_ETH_ROCE);
+ dev_info->rdma_supported = (cdev->hwfns[0].hw_info.personality ==
+ QED_PCI_ETH_ROCE);
dev_info->is_mf_default = IS_MF_DEFAULT(&cdev->hwfns[0]);
ether_addr_copy(dev_info->hw_mac, cdev->hwfns[0].hw_info.hw_mac_addr);

@@ -677,6 +682,9 @@ static int qed_slowpath_setup_int(struct qed_dev *cdev,
enum qed_int_mode int_mode)
{
struct qed_sb_cnt_info sb_cnt_info;
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+ int num_l2_queues;
+#endif
int rc;
int i;

@@ -707,6 +715,31 @@ static int qed_slowpath_setup_int(struct qed_dev *cdev,
cdev->int_params.fp_msix_cnt = cdev->int_params.out.num_vectors -
cdev->num_hwfns;

+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+ num_l2_queues = 0;
+ for_each_hwfn(cdev, i)
+ num_l2_queues += FEAT_NUM(&cdev->hwfns[i], QED_PF_L2_QUE);
+
+ DP_VERBOSE(cdev, QED_MSG_RDMA,
+ "cdev->int_params.fp_msix_cnt=%d num_l2_queues=%d\n",
+ cdev->int_params.fp_msix_cnt, num_l2_queues);
+
+ if (cdev->int_params.fp_msix_cnt > num_l2_queues) {
+ cdev->int_params.rdma_msix_cnt =
+ (cdev->int_params.fp_msix_cnt - num_l2_queues)
+ / cdev->num_hwfns;
+ cdev->int_params.rdma_msix_base =
+ cdev->int_params.fp_msix_base + num_l2_queues;
+ cdev->int_params.fp_msix_cnt = num_l2_queues;
+ } else {
+ cdev->int_params.rdma_msix_cnt = 0;
+ }
+
+ DP_VERBOSE(cdev, QED_MSG_RDMA, "roce_msix_cnt=%d roce_msix_base=%d\n",
+ cdev->int_params.rdma_msix_cnt,
+ cdev->int_params.rdma_msix_base);
+#endif
+
return 0;
}

@@ -810,6 +843,13 @@ static void qed_update_pf_params(struct qed_dev *cdev,
{
int i;

+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+ params->rdma_pf_params.num_qps = QED_ROCE_QPS;
+ params->rdma_pf_params.min_dpis = QED_ROCE_DPIS;
+ /* divide by 3 the MRs to avoid MF ILT overflow */
+ params->rdma_pf_params.num_mrs = RDMA_MAX_TIDS;
+ params->rdma_pf_params.gl_pi = QED_ROCE_PROTOCOL_INDEX;
+#endif
for (i = 0; i < cdev->num_hwfns; i++) {
struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

diff --git a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
index e75738d..b414a05 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
@@ -1448,5 +1448,11 @@
0x620000UL
#define PHY_PCIE_REG_PHY1 \
0x624000UL
-
+#define NIG_REG_ROCE_DUPLICATE_TO_HOST 0x5088f0UL
+#define PRS_REG_LIGHT_L2_ETHERTYPE_EN 0x1f0968UL
+#define NIG_REG_LLH_ENG_CLS_ENG_ID_TBL 0x501b90UL
+#define DORQ_REG_PF_DPM_ENABLE 0x100510UL
+#define DORQ_REG_PF_ICID_BIT_SHIFT_NORM 0x100448UL
+#define DORQ_REG_PF_MIN_ADDR_REG1 0x100400UL
+#define DORQ_REG_PF_DPI_BIT_SHIFT 0x100450UL
#endif
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
new file mode 100644
index 0000000..4c53b85
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c
@@ -0,0 +1,886 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/io.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/tcp.h>
+#include <linux/bitops.h>
+#include <linux/qed/qed_roce_if.h>
+#include <linux/qed/qed_roce_if.h>
+#include "qed.h"
+#include "qed_cxt.h"
+#include "qed_hsi.h"
+#include "qed_hw.h"
+#include "qed_init_ops.h"
+#include "qed_int.h"
+#include "qed_ll2.h"
+#include "qed_mcp.h"
+#include "qed_reg_addr.h"
+#include "qed_sp.h"
+#include "qed_roce.h"
+
+void qed_async_roce_event(struct qed_hwfn *p_hwfn,
+ struct event_ring_entry *p_eqe)
+{
+ struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info;
+
+ p_rdma_info->events.affiliated_event(p_rdma_info->events.context,
+ p_eqe->opcode, &p_eqe->data);
+}
+
+static int qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
+ struct qed_bmap *bmap, u32 max_count)
+{
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "max_count = %08x\n", max_count);
+
+ bmap->max_count = max_count;
+
+ bmap->bitmap = kzalloc(BITS_TO_LONGS(max_count) * sizeof(long),
+ GFP_KERNEL);
+ if (!bmap->bitmap) {
+ DP_NOTICE(p_hwfn,
+ "qed bmap alloc failed: cannot allocate memory (bitmap)\n");
+ return -ENOMEM;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocated bitmap %p\n",
+ bmap->bitmap);
+ return 0;
+}
+
+static int qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn,
+ struct qed_bmap *bmap, u32 *id_num)
+{
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "bmap = %p\n", bmap);
+
+ *id_num = find_first_zero_bit(bmap->bitmap, bmap->max_count);
+
+ if (*id_num >= bmap->max_count) {
+ DP_NOTICE(p_hwfn, "no id available max_count=%d\n",
+ bmap->max_count);
+ return -EINVAL;
+ }
+
+ __set_bit(*id_num, bmap->bitmap);
+
+ return 0;
+}
+
+static void qed_bmap_release_id(struct qed_hwfn *p_hwfn,
+ struct qed_bmap *bmap, u32 id_num)
+{
+ bool b_acquired;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "id_num = %08x", id_num);
+ if (id_num >= bmap->max_count)
+ return;
+
+ b_acquired = test_and_clear_bit(id_num, bmap->bitmap);
+ if (!b_acquired) {
+ DP_NOTICE(p_hwfn, "ID %d already released\n", id_num);
+ return;
+ }
+}
+
+u32 qed_rdma_get_sb_id(void *p_hwfn, u32 rel_sb_id)
+{
+ /* First sb id for RoCE is after all the l2 sb */
+ return FEAT_NUM((struct qed_hwfn *)p_hwfn, QED_PF_L2_QUE) + rel_sb_id;
+}
+
+u32 qed_rdma_query_cau_timer_res(void *rdma_cxt)
+{
+ return QED_CAU_DEF_RX_TIMER_RES;
+}
+
+static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_rdma_start_in_params *params)
+{
+ struct qed_rdma_info *p_rdma_info;
+ u32 num_cons, num_tasks;
+ int rc = -ENOMEM;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocating RDMA\n");
+
+ /* Allocate a struct with current pf rdma info */
+ p_rdma_info = kzalloc(sizeof(*p_rdma_info), GFP_KERNEL);
+ if (!p_rdma_info) {
+ DP_NOTICE(p_hwfn,
+ "qed rdma alloc failed: cannot allocate memory (rdma info). rc = %d\n",
+ rc);
+ return rc;
+ }
+
+ p_hwfn->p_rdma_info = p_rdma_info;
+ p_rdma_info->proto = PROTOCOLID_ROCE;
+
+ num_cons = qed_cxt_get_proto_cid_count(p_hwfn, p_rdma_info->proto, 0);
+
+ p_rdma_info->num_qps = num_cons / 2;
+
+ num_tasks = qed_cxt_get_proto_tid_count(p_hwfn, PROTOCOLID_ROCE);
+
+ /* Each MR uses a single task */
+ p_rdma_info->num_mrs = num_tasks;
+
+ /* Queue zone lines are shared between RoCE and L2 in such a way that
+ * they can be used by each without obstructing the other.
+ */
+ p_rdma_info->queue_zone_base = (u16)FEAT_NUM(p_hwfn, QED_L2_QUEUE);
+
+ /* Allocate a struct with device params and fill it */
+ p_rdma_info->dev = kzalloc(sizeof(*p_rdma_info->dev), GFP_KERNEL);
+ if (!p_rdma_info->dev) {
+ DP_NOTICE(p_hwfn,
+ "qed rdma alloc failed: cannot allocate memory (rdma info dev). rc = %d\n",
+ rc);
+ goto free_rdma_info;
+ }
+
+ /* Allocate a struct with port params and fill it */
+ p_rdma_info->port = kzalloc(sizeof(*p_rdma_info->port), GFP_KERNEL);
+ if (!p_rdma_info->port) {
+ DP_NOTICE(p_hwfn,
+ "qed rdma alloc failed: cannot allocate memory (rdma info port). rc = %d\n",
+ rc);
+ goto free_rdma_dev;
+ }
+
+ /* Allocate bit map for pd's */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->pd_map, RDMA_MAX_PDS);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate pd_map, rc = %d\n",
+ rc);
+ goto free_rdma_port;
+ }
+
+ /* Allocate DPI bitmap */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->dpi_map,
+ p_hwfn->dpi_count);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate DPI bitmap, rc = %d\n", rc);
+ goto free_pd_map;
+ }
+
+ /* Allocate bitmap for cq's. The maximum number of CQs is bounded to
+ * twice the number of QPs.
+ */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cq_map,
+ p_rdma_info->num_qps * 2);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate cq bitmap, rc = %d\n", rc);
+ goto free_dpi_map;
+ }
+
+ /* Allocate bitmap for toggle bit for cq icids
+ * We toggle the bit every time we create or resize cq for a given icid.
+ * The maximum number of CQs is bounded to twice the number of QPs.
+ */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->toggle_bits,
+ p_rdma_info->num_qps * 2);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate toogle bits, rc = %d\n", rc);
+ goto free_cq_map;
+ }
+
+ /* Allocate bitmap for itids */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->tid_map,
+ p_rdma_info->num_mrs);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate itids bitmaps, rc = %d\n", rc);
+ goto free_toggle_map;
+ }
+
+ /* Allocate bitmap for cids used for qps. */
+ rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cid_map, num_cons);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Failed to allocate cid bitmap, rc = %d\n", rc);
+ goto free_tid_map;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocation successful\n");
+ return 0;
+
+free_tid_map:
+ kfree(p_rdma_info->tid_map.bitmap);
+free_toggle_map:
+ kfree(p_rdma_info->toggle_bits.bitmap);
+free_cq_map:
+ kfree(p_rdma_info->cq_map.bitmap);
+free_dpi_map:
+ kfree(p_rdma_info->dpi_map.bitmap);
+free_pd_map:
+ kfree(p_rdma_info->pd_map.bitmap);
+free_rdma_port:
+ kfree(p_rdma_info->port);
+free_rdma_dev:
+ kfree(p_rdma_info->dev);
+free_rdma_info:
+ kfree(p_rdma_info);
+
+ return rc;
+}
+
+void qed_rdma_resc_free(struct qed_hwfn *p_hwfn)
+{
+ struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info;
+
+ kfree(p_rdma_info->cid_map.bitmap);
+ kfree(p_rdma_info->tid_map.bitmap);
+ kfree(p_rdma_info->toggle_bits.bitmap);
+ kfree(p_rdma_info->cq_map.bitmap);
+ kfree(p_rdma_info->dpi_map.bitmap);
+ kfree(p_rdma_info->pd_map.bitmap);
+
+ kfree(p_rdma_info->port);
+ kfree(p_rdma_info->dev);
+
+ kfree(p_rdma_info);
+}
+
+static void qed_rdma_free(struct qed_hwfn *p_hwfn)
+{
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Freeing RDMA\n");
+
+ qed_rdma_resc_free(p_hwfn);
+}
+
+static void qed_rdma_get_guid(struct qed_hwfn *p_hwfn, u8 *guid)
+{
+ guid[0] = p_hwfn->hw_info.hw_mac_addr[0] ^ 2;
+ guid[1] = p_hwfn->hw_info.hw_mac_addr[1];
+ guid[2] = p_hwfn->hw_info.hw_mac_addr[2];
+ guid[3] = 0xff;
+ guid[4] = 0xfe;
+ guid[5] = p_hwfn->hw_info.hw_mac_addr[3];
+ guid[6] = p_hwfn->hw_info.hw_mac_addr[4];
+ guid[7] = p_hwfn->hw_info.hw_mac_addr[5];
+}
+
+static void qed_rdma_init_events(struct qed_hwfn *p_hwfn,
+ struct qed_rdma_start_in_params *params)
+{
+ struct qed_rdma_events *events;
+
+ events = &p_hwfn->p_rdma_info->events;
+
+ events->unaffiliated_event = params->events->unaffiliated_event;
+ events->affiliated_event = params->events->affiliated_event;
+ events->context = params->events->context;
+}
+
+static void qed_rdma_init_devinfo(struct qed_hwfn *p_hwfn,
+ struct qed_rdma_start_in_params *params)
+{
+ struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
+ struct qed_dev *cdev = p_hwfn->cdev;
+ u32 pci_status_control;
+ u32 num_qps;
+
+ /* Vendor specific information */
+ dev->vendor_id = cdev->vendor_id;
+ dev->vendor_part_id = cdev->device_id;
+ dev->hw_ver = 0;
+ dev->fw_ver = (FW_MAJOR_VERSION << 24) | (FW_MINOR_VERSION << 16) |
+ (FW_REVISION_VERSION << 8) | (FW_ENGINEERING_VERSION);
+
+ qed_rdma_get_guid(p_hwfn, (u8 *)&dev->sys_image_guid);
+ dev->node_guid = dev->sys_image_guid;
+
+ dev->max_sge = min_t(u32, RDMA_MAX_SGE_PER_SQ_WQE,
+ RDMA_MAX_SGE_PER_RQ_WQE);
+
+ if (cdev->rdma_max_sge)
+ dev->max_sge = min_t(u32, cdev->rdma_max_sge, dev->max_sge);
+
+ dev->max_inline = ROCE_REQ_MAX_INLINE_DATA_SIZE;
+
+ dev->max_inline = (cdev->rdma_max_inline) ?
+ min_t(u32, cdev->rdma_max_inline, dev->max_inline) :
+ dev->max_inline;
+
+ dev->max_wqe = QED_RDMA_MAX_WQE;
+ dev->max_cnq = (u8)FEAT_NUM(p_hwfn, QED_RDMA_CNQ);
+
+ /* The number of QPs may be higher than QED_ROCE_MAX_QPS, because
+ * it is up-aligned to 16 and then to ILT page size within qed cxt.
+ * This is OK in terms of ILT but we don't want to configure the FW
+ * above its abilities
+ */
+ num_qps = ROCE_MAX_QPS;
+ num_qps = min_t(u64, num_qps, p_hwfn->p_rdma_info->num_qps);
+ dev->max_qp = num_qps;
+
+ /* CQs uses the same icids that QPs use hence they are limited by the
+ * number of icids. There are two icids per QP.
+ */
+ dev->max_cq = num_qps * 2;
+
+ /* The number of mrs is smaller by 1 since the first is reserved */
+ dev->max_mr = p_hwfn->p_rdma_info->num_mrs - 1;
+ dev->max_mr_size = QED_RDMA_MAX_MR_SIZE;
+
+ /* The maximum CQE capacity per CQ supported.
+ * max number of cqes will be in two layer pbl,
+ * 8 is the pointer size in bytes
+ * 32 is the size of cq element in bytes
+ */
+ if (params->cq_mode == QED_RDMA_CQ_MODE_32_BITS)
+ dev->max_cqe = QED_RDMA_MAX_CQE_32_BIT;
+ else
+ dev->max_cqe = QED_RDMA_MAX_CQE_16_BIT;
+
+ dev->max_mw = 0;
+ dev->max_fmr = QED_RDMA_MAX_FMR;
+ dev->max_mr_mw_fmr_pbl = (PAGE_SIZE / 8) * (PAGE_SIZE / 8);
+ dev->max_mr_mw_fmr_size = dev->max_mr_mw_fmr_pbl * PAGE_SIZE;
+ dev->max_pkey = QED_RDMA_MAX_P_KEY;
+
+ dev->max_qp_resp_rd_atomic_resc = RDMA_RING_PAGE_SIZE /
+ (RDMA_RESP_RD_ATOMIC_ELM_SIZE * 2);
+ dev->max_qp_req_rd_atomic_resc = RDMA_RING_PAGE_SIZE /
+ RDMA_REQ_RD_ATOMIC_ELM_SIZE;
+ dev->max_dev_resp_rd_atomic_resc = dev->max_qp_resp_rd_atomic_resc *
+ p_hwfn->p_rdma_info->num_qps;
+ dev->page_size_caps = QED_RDMA_PAGE_SIZE_CAPS;
+ dev->dev_ack_delay = QED_RDMA_ACK_DELAY;
+ dev->max_pd = RDMA_MAX_PDS;
+ dev->max_ah = p_hwfn->p_rdma_info->num_qps;
+ dev->max_stats_queues = (u8)RESC_NUM(p_hwfn, QED_RDMA_STATS_QUEUE);
+
+ /* Set capablities */
+ dev->dev_caps = 0;
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_RNR_NAK, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_PORT_ACTIVE_EVENT, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_PORT_CHANGE_EVENT, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_RESIZE_CQ, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_BASE_MEMORY_EXT, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_BASE_QUEUE_EXT, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_ZBVA, 1);
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_LOCAL_INV_FENCE, 1);
+
+ /* Check atomic operations support in PCI configuration space. */
+ pci_read_config_dword(cdev->pdev,
+ cdev->pdev->pcie_cap + PCI_EXP_DEVCTL2,
+ &pci_status_control);
+
+ if (pci_status_control & PCI_EXP_DEVCTL2_LTR_EN)
+ SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_ATOMIC_OP, 1);
+}
+
+static void qed_rdma_init_port(struct qed_hwfn *p_hwfn)
+{
+ struct qed_rdma_port *port = p_hwfn->p_rdma_info->port;
+ struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
+
+ port->port_state = p_hwfn->mcp_info->link_output.link_up ?
+ QED_RDMA_PORT_UP : QED_RDMA_PORT_DOWN;
+
+ port->max_msg_size = min_t(u64,
+ (dev->max_mr_mw_fmr_size *
+ p_hwfn->cdev->rdma_max_sge),
+ BIT(31));
+
+ port->pkey_bad_counter = 0;
+}
+
+static int qed_rdma_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+{
+ u32 ll2_ethertype_en;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW\n");
+ p_hwfn->b_rdma_enabled_in_prs = false;
+
+ qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0);
+
+ p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_ROCE;
+
+ /* We delay writing to this reg until first cid is allocated. See
+ * qed_cxt_dynamic_ilt_alloc function for more details
+ */
+ ll2_ethertype_en = qed_rd(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN);
+ qed_wr(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN,
+ (ll2_ethertype_en | 0x01));
+
+ if (qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_ROCE) % 2) {
+ DP_NOTICE(p_hwfn, "The first RoCE's cid should be even\n");
+ return -EINVAL;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW - Done\n");
+ return 0;
+}
+
+static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn,
+ struct qed_rdma_start_in_params *params,
+ struct qed_ptt *p_ptt)
+{
+ struct rdma_init_func_ramrod_data *p_ramrod;
+ struct qed_rdma_cnq_params *p_cnq_pbl_list;
+ struct rdma_init_func_hdr *p_params_header;
+ struct rdma_cnq_params *p_cnq_params;
+ struct qed_sp_init_data init_data;
+ struct qed_spq_entry *p_ent;
+ u32 cnq_id, sb_id;
+ int rc;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Starting FW\n");
+
+ /* Save the number of cnqs for the function close ramrod */
+ p_hwfn->p_rdma_info->num_cnqs = params->desired_cnq;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_FUNC_INIT,
+ p_hwfn->p_rdma_info->proto, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.roce_init_func.rdma;
+
+ p_params_header = &p_ramrod->params_header;
+ p_params_header->cnq_start_offset = (u8)RESC_START(p_hwfn,
+ QED_RDMA_CNQ_RAM);
+ p_params_header->num_cnqs = params->desired_cnq;
+
+ if (params->cq_mode == QED_RDMA_CQ_MODE_16_BITS)
+ p_params_header->cq_ring_mode = 1;
+ else
+ p_params_header->cq_ring_mode = 0;
+
+ for (cnq_id = 0; cnq_id < params->desired_cnq; cnq_id++) {
+ sb_id = qed_rdma_get_sb_id(p_hwfn, cnq_id);
+ p_cnq_params = &p_ramrod->cnq_params[cnq_id];
+ p_cnq_pbl_list = &params->cnq_pbl_list[cnq_id];
+ p_cnq_params->sb_num =
+ cpu_to_le16(p_hwfn->sbs_info[sb_id]->igu_sb_id);
+
+ p_cnq_params->sb_index = p_hwfn->pf_params.rdma_pf_params.gl_pi;
+ p_cnq_params->num_pbl_pages = p_cnq_pbl_list->num_pbl_pages;
+
+ DMA_REGPAIR_LE(p_cnq_params->pbl_base_addr,
+ p_cnq_pbl_list->pbl_ptr);
+
+ /* we assume here that cnq_id and qz_offset are the same */
+ p_cnq_params->queue_zone_num =
+ cpu_to_le16(p_hwfn->p_rdma_info->queue_zone_base +
+ cnq_id);
+ }
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_rdma_reserve_lkey(struct qed_hwfn *p_hwfn)
+{
+ struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
+
+ /* The first DPI is reserved for the Kernel */
+ __set_bit(0, p_hwfn->p_rdma_info->dpi_map.bitmap);
+
+ /* Tid 0 will be used as the key for "reserved MR".
+ * The driver should allocate memory for it so it can be loaded but no
+ * ramrod should be passed on it.
+ */
+ qed_rdma_alloc_tid(p_hwfn, &dev->reserved_lkey);
+ if (dev->reserved_lkey != RDMA_RESERVED_LKEY) {
+ DP_NOTICE(p_hwfn,
+ "Reserved lkey should be equal to RDMA_RESERVED_LKEY\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int qed_rdma_setup(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_rdma_start_in_params *params)
+{
+ int rc;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA setup\n");
+
+ spin_lock_init(&p_hwfn->p_rdma_info->lock);
+
+ qed_rdma_init_devinfo(p_hwfn, params);
+ qed_rdma_init_port(p_hwfn);
+ qed_rdma_init_events(p_hwfn, params);
+
+ rc = qed_rdma_reserve_lkey(p_hwfn);
+ if (rc)
+ return rc;
+
+ rc = qed_rdma_init_hw(p_hwfn, p_ptt);
+ if (rc)
+ return rc;
+
+ return qed_rdma_start_fw(p_hwfn, params, p_ptt);
+}
+
+int qed_rdma_stop(void *rdma_cxt)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ struct rdma_close_func_ramrod_data *p_ramrod;
+ struct qed_sp_init_data init_data;
+ struct qed_spq_entry *p_ent;
+ struct qed_ptt *p_ptt;
+ u32 ll2_ethertype_en;
+ int rc = -EBUSY;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA stop\n");
+
+ p_ptt = qed_ptt_acquire(p_hwfn);
+ if (!p_ptt) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Failed to acquire PTT\n");
+ return rc;
+ }
+
+ /* Disable RoCE search */
+ qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 0);
+ p_hwfn->b_rdma_enabled_in_prs = false;
+
+ qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0);
+
+ ll2_ethertype_en = qed_rd(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN);
+
+ qed_wr(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN,
+ (ll2_ethertype_en & 0xFFFE));
+
+ qed_ptt_release(p_hwfn, p_ptt);
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
+
+ /* Stop RoCE */
+ rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_FUNC_CLOSE,
+ p_hwfn->p_rdma_info->proto, &init_data);
+ if (rc)
+ goto out;
+
+ p_ramrod = &p_ent->ramrod.rdma_close_func;
+
+ p_ramrod->num_cnqs = p_hwfn->p_rdma_info->num_cnqs;
+ p_ramrod->cnq_start_offset = (u8)RESC_START(p_hwfn, QED_RDMA_CNQ_RAM);
+
+ rc = qed_spq_post(p_hwfn, p_ent, NULL);
+
+out:
+ qed_rdma_free(p_hwfn);
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA stop done, rc = %d\n", rc);
+ return rc;
+}
+
+int qed_rdma_add_user(void *rdma_cxt,
+ struct qed_rdma_add_user_out_params *out_params)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ u32 dpi_start_offset;
+ u32 returned_id = 0;
+ int rc;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Adding User\n");
+
+ /* Allocate DPI */
+ spin_lock_bh(&p_hwfn->p_rdma_info->lock);
+ rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->dpi_map,
+ &returned_id);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
+
+ out_params->dpi = (u16)returned_id;
+
+ /* Calculate the corresponding DPI address */
+ dpi_start_offset = p_hwfn->dpi_start_offset;
+
+ out_params->dpi_addr = (u64)((u8 __iomem *)p_hwfn->doorbells +
+ dpi_start_offset +
+ ((out_params->dpi) * p_hwfn->dpi_size));
+
+ out_params->dpi_phys_addr = p_hwfn->cdev->db_phys_addr +
+ dpi_start_offset +
+ ((out_params->dpi) * p_hwfn->dpi_size);
+
+ out_params->dpi_size = p_hwfn->dpi_size;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Adding user - done, rc = %d\n", rc);
+ return rc;
+}
+
+struct qed_rdma_device *qed_rdma_query_device(void *rdma_cxt)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Query device\n");
+
+ /* Return struct with device parameters */
+ return p_hwfn->p_rdma_info->dev;
+}
+
+int qed_rdma_alloc_tid(void *rdma_cxt, u32 *itid)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ int rc;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocate TID\n");
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->lock);
+ rc = qed_rdma_bmap_alloc_id(p_hwfn,
+ &p_hwfn->p_rdma_info->tid_map, itid);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
+ if (rc)
+ goto out;
+
+ rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_TASK, *itid);
+out:
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocate TID - done, rc = %d\n", rc);
+ return rc;
+}
+
+void qed_rdma_cnq_prod_update(void *rdma_cxt, u8 qz_offset, u16 prod)
+{
+ struct qed_hwfn *p_hwfn;
+ u16 qz_num;
+ u32 addr;
+
+ p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ qz_num = p_hwfn->p_rdma_info->queue_zone_base + qz_offset;
+ addr = GTT_BAR0_MAP_REG_USDM_RAM +
+ USTORM_COMMON_QUEUE_CONS_OFFSET(qz_num);
+
+ REG_WR16(p_hwfn, addr, prod);
+
+ /* keep prod updates ordered */
+ wmb();
+}
+
+static int qed_fill_rdma_dev_info(struct qed_dev *cdev,
+ struct qed_dev_rdma_info *info)
+{
+ memset(info, 0, sizeof(*info));
+
+ info->rdma_type = QED_RDMA_TYPE_ROCE;
+
+ qed_fill_dev_info(cdev, &info->common);
+
+ return 0;
+}
+
+static int qed_rdma_get_sb_start(struct qed_dev *cdev)
+{
+ int feat_num;
+
+ if (cdev->num_hwfns > 1)
+ feat_num = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_PF_L2_QUE);
+ else
+ feat_num = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_PF_L2_QUE) *
+ cdev->num_hwfns;
+
+ return feat_num;
+}
+
+static int qed_rdma_get_min_cnq_msix(struct qed_dev *cdev)
+{
+ int n_cnq = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_RDMA_CNQ);
+ int n_msix = cdev->int_params.rdma_msix_cnt;
+
+ return min_t(int, n_cnq, n_msix);
+}
+
+static int qed_rdma_set_int(struct qed_dev *cdev, u16 cnt)
+{
+ int limit = 0;
+
+ /* Mark the fastpath as free/used */
+ cdev->int_params.fp_initialized = cnt ? true : false;
+
+ if (cdev->int_params.out.int_mode != QED_INT_MODE_MSIX) {
+ DP_ERR(cdev,
+ "qed roce supports only MSI-X interrupts (detected %d).\n",
+ cdev->int_params.out.int_mode);
+ return -EINVAL;
+ } else if (cdev->int_params.fp_msix_cnt) {
+ limit = cdev->int_params.rdma_msix_cnt;
+ }
+
+ if (!limit)
+ return -ENOMEM;
+
+ return min_t(int, cnt, limit);
+}
+
+static int qed_rdma_get_int(struct qed_dev *cdev, struct qed_int_info *info)
+{
+ memset(info, 0, sizeof(*info));
+
+ if (!cdev->int_params.fp_initialized) {
+ DP_INFO(cdev,
+ "Protocol driver requested interrupt information, but its support is not yet configured\n");
+ return -EINVAL;
+ }
+
+ if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
+ int msix_base = cdev->int_params.rdma_msix_base;
+
+ info->msix_cnt = cdev->int_params.rdma_msix_cnt;
+ info->msix = &cdev->int_params.msix_table[msix_base];
+
+ DP_VERBOSE(cdev, QED_MSG_RDMA, "msix_cnt = %d msix_base=%d\n",
+ info->msix_cnt, msix_base);
+ }
+
+ return 0;
+}
+
+static void *qed_rdma_get_rdma_ctx(struct qed_dev *cdev)
+{
+ return QED_LEADING_HWFN(cdev);
+}
+
+static void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+{
+ u32 val;
+
+ val = (p_hwfn->dcbx_no_edpm || p_hwfn->db_bar_no_edpm) ? 0 : 1;
+
+ qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_DPM_ENABLE, val);
+ DP_VERBOSE(p_hwfn, (QED_MSG_DCB | QED_MSG_RDMA),
+ "Changing DPM_EN state to %d (DCBX=%d, DB_BAR=%d)\n",
+ val, p_hwfn->dcbx_no_edpm, p_hwfn->db_bar_no_edpm);
+}
+
+void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+{
+ p_hwfn->db_bar_no_edpm = true;
+
+ qed_rdma_dpm_conf(p_hwfn, p_ptt);
+}
+
+int qed_rdma_start(void *rdma_cxt, struct qed_rdma_start_in_params *params)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+ struct qed_ptt *p_ptt;
+ int rc = -EBUSY;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "desired_cnq = %08x\n", params->desired_cnq);
+
+ p_ptt = qed_ptt_acquire(p_hwfn);
+ if (!p_ptt)
+ goto err;
+
+ rc = qed_rdma_alloc(p_hwfn, p_ptt, params);
+ if (rc)
+ goto err1;
+
+ rc = qed_rdma_setup(p_hwfn, p_ptt, params);
+ if (rc)
+ goto err2;
+
+ qed_ptt_release(p_hwfn, p_ptt);
+
+ return rc;
+
+err2:
+ qed_rdma_free(p_hwfn);
+err1:
+ qed_ptt_release(p_hwfn, p_ptt);
+err:
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA start - error, rc = %d\n", rc);
+ return rc;
+}
+
+static int qed_rdma_init(struct qed_dev *cdev,
+ struct qed_rdma_start_in_params *params)
+{
+ return qed_rdma_start(QED_LEADING_HWFN(cdev), params);
+}
+
+void qed_rdma_remove_user(void *rdma_cxt, u16 dpi)
+{
+ struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "dpi = %08x\n", dpi);
+
+ spin_lock_bh(&p_hwfn->p_rdma_info->lock);
+ qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->dpi_map, dpi);
+ spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
+}
+
+static const struct qed_rdma_ops qed_rdma_ops_pass = {
+ .common = &qed_common_ops_pass,
+ .fill_dev_info = &qed_fill_rdma_dev_info,
+ .rdma_get_rdma_ctx = &qed_rdma_get_rdma_ctx,
+ .rdma_init = &qed_rdma_init,
+ .rdma_add_user = &qed_rdma_add_user,
+ .rdma_remove_user = &qed_rdma_remove_user,
+ .rdma_stop = &qed_rdma_stop,
+ .rdma_query_device = &qed_rdma_query_device,
+ .rdma_get_start_sb = &qed_rdma_get_sb_start,
+ .rdma_get_rdma_int = &qed_rdma_get_int,
+ .rdma_set_rdma_int = &qed_rdma_set_int,
+ .rdma_get_min_cnq_msix = &qed_rdma_get_min_cnq_msix,
+ .rdma_cnq_prod_update = &qed_rdma_cnq_prod_update,
+};
+
+const struct qed_rdma_ops *qed_get_rdma_ops()
+{
+ return &qed_rdma_ops_pass;
+}
+EXPORT_SYMBOL(qed_get_rdma_ops);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.h b/drivers/net/ethernet/qlogic/qed/qed_roce.h
new file mode 100644
index 0000000..e550481
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_roce.h
@@ -0,0 +1,123 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef _QED_ROCE_H
+#define _QED_ROCE_H
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qed_roce_if.h>
+#include "qed.h"
+#include "qed_dev_api.h"
+#include "qed_hsi.h"
+
+#define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS)
+#define QED_RDMA_MAX_P_KEY (1)
+#define QED_RDMA_MAX_WQE (0x7FFF)
+#define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF)
+#define QED_RDMA_PAGE_SIZE_CAPS (0xFFFFF000)
+#define QED_RDMA_ACK_DELAY (15)
+#define QED_RDMA_MAX_MR_SIZE (0x10000000000ULL)
+#define QED_RDMA_MAX_CQS (RDMA_MAX_CQS)
+#define QED_RDMA_MAX_MRS (RDMA_MAX_TIDS)
+/* Add 1 for header element */
+#define QED_RDMA_MAX_SRQ_ELEM_PER_WQE (RDMA_MAX_SGE_PER_RQ_WQE + 1)
+#define QED_RDMA_MAX_SGE_PER_SRQ_WQE (RDMA_MAX_SGE_PER_RQ_WQE)
+#define QED_RDMA_SRQ_WQE_ELEM_SIZE (16)
+#define QED_RDMA_MAX_SRQS (32 * 1024)
+
+#define QED_RDMA_MAX_CQE_32_BIT (0x7FFFFFFF - 1)
+#define QED_RDMA_MAX_CQE_16_BIT (0x7FFF - 1)
+
+enum qed_rdma_toggle_bit {
+ QED_RDMA_TOGGLE_BIT_CLEAR = 0,
+ QED_RDMA_TOGGLE_BIT_SET = 1
+};
+
+struct qed_bmap {
+ unsigned long *bitmap;
+ u32 max_count;
+};
+
+struct qed_rdma_info {
+ /* spin lock to protect bitmaps */
+ spinlock_t lock;
+
+ struct qed_bmap cq_map;
+ struct qed_bmap pd_map;
+ struct qed_bmap tid_map;
+ struct qed_bmap qp_map;
+ struct qed_bmap srq_map;
+ struct qed_bmap cid_map;
+ struct qed_bmap dpi_map;
+ struct qed_bmap toggle_bits;
+ struct qed_rdma_events events;
+ struct qed_rdma_device *dev;
+ struct qed_rdma_port *port;
+ u32 last_tid;
+ u8 num_cnqs;
+ u32 num_qps;
+ u32 num_mrs;
+ u16 queue_zone_base;
+ enum protocol_type proto;
+};
+
+int
+qed_rdma_add_user(void *rdma_cxt,
+ struct qed_rdma_add_user_out_params *out_params);
+int qed_rdma_alloc_pd(void *rdma_cxt, u16 *pd);
+int qed_rdma_alloc_tid(void *rdma_cxt, u32 *tid);
+int qed_rdma_deregister_tid(void *rdma_cxt, u32 tid);
+void qed_rdma_free_tid(void *rdma_cxt, u32 tid);
+struct qed_rdma_device *qed_rdma_query_device(void *rdma_cxt);
+int
+qed_rdma_register_tid(void *rdma_cxt,
+ struct qed_rdma_register_tid_in_params *params);
+void qed_rdma_remove_user(void *rdma_cxt, u16 dpi);
+int qed_rdma_start(void *p_hwfn, struct qed_rdma_start_in_params *params);
+int qed_rdma_stop(void *rdma_cxt);
+u32 qed_rdma_get_sb_id(void *p_hwfn, u32 rel_sb_id);
+u32 qed_rdma_query_cau_timer_res(void *p_hwfn);
+void qed_rdma_cnq_prod_update(void *rdma_cxt, u8 cnq_index, u16 prod);
+void qed_rdma_resc_free(struct qed_hwfn *p_hwfn);
+void qed_async_roce_event(struct qed_hwfn *p_hwfn,
+ struct event_ring_entry *p_eqe);
+
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
+#else
+void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
+#endif
+#endif
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sp.h b/drivers/net/ethernet/qlogic/qed/qed_sp.h
index a3c539f..652c908 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sp.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_sp.h
@@ -85,6 +85,7 @@ union ramrod_data {
struct rdma_srq_create_ramrod_data rdma_create_srq;
struct rdma_srq_destroy_ramrod_data rdma_destroy_srq;
struct rdma_srq_modify_ramrod_data rdma_modify_srq;
+ struct roce_init_func_ramrod_data roce_init_func;

struct iscsi_slow_path_hdr iscsi_empty;
struct iscsi_init_ramrod_params iscsi_init;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c
index 349af18..caff415 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_spq.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c
@@ -28,6 +28,9 @@
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_sriov.h"
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+#include "qed_roce.h"
+#endif

/***************************************************************************
* Structures & Definitions
@@ -237,6 +240,11 @@ qed_async_event_completion(struct qed_hwfn *p_hwfn,
struct event_ring_entry *p_eqe)
{
switch (p_eqe->protocol_id) {
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+ case PROTOCOLID_ROCE:
+ qed_async_roce_event(p_hwfn, p_eqe);
+ return 0;
+#endif
case PROTOCOLID_COMMON:
return qed_sriov_eqe_event(p_hwfn,
p_eqe->opcode,
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
index a4a3cea..d2d6621 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
@@ -1851,8 +1851,8 @@ static void qed_iov_vf_mbx_start_txq_resp(struct qed_hwfn *p_hwfn,
if ((status == PFVF_STATUS_SUCCESS) && !b_legacy) {
u16 qid = mbx->req_virt->start_txq.tx_qid;

- p_tlv->offset = qed_db_addr(p_vf->vf_queues[qid].fw_cid,
- DQ_DEMS_LEGACY);
+ p_tlv->offset = qed_db_addr_vf(p_vf->vf_queues[qid].fw_cid,
+ DQ_DEMS_LEGACY);
}

qed_iov_send_response(p_hwfn, p_ptt, p_vf, length, status);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_vf.c b/drivers/net/ethernet/qlogic/qed/qed_vf.c
index 85334ce..abf5bf1 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_vf.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_vf.c
@@ -544,7 +544,7 @@ int qed_vf_pf_txq_start(struct qed_hwfn *p_hwfn,
u8 cid = p_iov->acquire_resp.resc.cid[tx_queue_id];
u32 db_addr;

- db_addr = qed_db_addr(cid, DQ_DEMS_LEGACY);
+ db_addr = qed_db_addr_vf(cid, DQ_DEMS_LEGACY);
*pp_doorbell = (u8 __iomem *)p_hwfn->doorbells +
db_addr;
}
diff --git a/include/linux/qed/common_hsi.h b/include/linux/qed/common_hsi.h
index 1902763..734deb0 100644
--- a/include/linux/qed/common_hsi.h
+++ b/include/linux/qed/common_hsi.h
@@ -674,6 +674,7 @@ union event_ring_data {
struct iscsi_eqe_data iscsi_info;
struct malicious_vf_eqe_data malicious_vf;
struct initial_cleanup_eqe_data vf_init_cleanup;
+ struct regpair roce_handle;
};

/* Event Ring Entry */
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index e313742..f9ae903 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -34,6 +34,8 @@ enum dcbx_protocol_type {
DCBX_MAX_PROTOCOL_TYPE
};

+#define QED_ROCE_PROTOCOL_INDEX (3)
+
#ifdef CONFIG_DCB
#define QED_LLDP_CHASSIS_ID_STAT_LEN 4
#define QED_LLDP_PORT_ID_STAT_LEN 4
@@ -268,6 +270,7 @@ struct qed_dev_info {

enum qed_sb_type {
QED_SB_TYPE_L2_QUEUE,
+ QED_SB_TYPE_CNQ,
};

enum qed_protocol {
@@ -628,7 +631,7 @@ enum DP_MODULE {
QED_MSG_CXT = 0x800000,
QED_MSG_LL2 = 0x1000000,
QED_MSG_ILT = 0x2000000,
- QED_MSG_ROCE = 0x4000000,
+ QED_MSG_RDMA = 0x4000000,
QED_MSG_DEBUG = 0x8000000,
/* to be added...up to 0x8000000 */
};
diff --git a/include/linux/qed/qed_roce_if.h b/include/linux/qed/qed_roce_if.h
new file mode 100644
index 0000000..0f7d527
--- /dev/null
+++ b/include/linux/qed/qed_roce_if.h
@@ -0,0 +1,345 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef _QED_ROCE_IF_H
+#define _QED_ROCE_IF_H
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qed_ll2_if.h>
+
+#define QED_RDMA_MAX_CNQ_SIZE (0xFFFF)
+
+/* rdma interface */
+enum qed_rdma_tid_type {
+ QED_RDMA_TID_REGISTERED_MR,
+ QED_RDMA_TID_FMR,
+ QED_RDMA_TID_MW_TYPE1,
+ QED_RDMA_TID_MW_TYPE2A
+};
+
+struct qed_rdma_events {
+ void *context;
+ void (*affiliated_event)(void *context, u8 fw_event_code,
+ void *fw_handle);
+ void (*unaffiliated_event)(void *context, u8 event_code);
+};
+
+struct qed_rdma_device {
+ u32 vendor_id;
+ u32 vendor_part_id;
+ u32 hw_ver;
+ u64 fw_ver;
+
+ u64 node_guid;
+ u64 sys_image_guid;
+
+ u8 max_cnq;
+ u8 max_sge;
+ u8 max_srq_sge;
+ u16 max_inline;
+ u32 max_wqe;
+ u32 max_srq_wqe;
+ u8 max_qp_resp_rd_atomic_resc;
+ u8 max_qp_req_rd_atomic_resc;
+ u64 max_dev_resp_rd_atomic_resc;
+ u32 max_cq;
+ u32 max_qp;
+ u32 max_srq;
+ u32 max_mr;
+ u64 max_mr_size;
+ u32 max_cqe;
+ u32 max_mw;
+ u32 max_fmr;
+ u32 max_mr_mw_fmr_pbl;
+ u64 max_mr_mw_fmr_size;
+ u32 max_pd;
+ u32 max_ah;
+ u8 max_pkey;
+ u16 max_srq_wr;
+ u8 max_stats_queues;
+ u32 dev_caps;
+
+ /* Abilty to support RNR-NAK generation */
+
+#define QED_RDMA_DEV_CAP_RNR_NAK_MASK 0x1
+#define QED_RDMA_DEV_CAP_RNR_NAK_SHIFT 0
+ /* Abilty to support shutdown port */
+#define QED_RDMA_DEV_CAP_SHUTDOWN_PORT_MASK 0x1
+#define QED_RDMA_DEV_CAP_SHUTDOWN_PORT_SHIFT 1
+ /* Abilty to support port active event */
+#define QED_RDMA_DEV_CAP_PORT_ACTIVE_EVENT_MASK 0x1
+#define QED_RDMA_DEV_CAP_PORT_ACTIVE_EVENT_SHIFT 2
+ /* Abilty to support port change event */
+#define QED_RDMA_DEV_CAP_PORT_CHANGE_EVENT_MASK 0x1
+#define QED_RDMA_DEV_CAP_PORT_CHANGE_EVENT_SHIFT 3
+ /* Abilty to support system image GUID */
+#define QED_RDMA_DEV_CAP_SYS_IMAGE_MASK 0x1
+#define QED_RDMA_DEV_CAP_SYS_IMAGE_SHIFT 4
+ /* Abilty to support bad P_Key counter support */
+#define QED_RDMA_DEV_CAP_BAD_PKEY_CNT_MASK 0x1
+#define QED_RDMA_DEV_CAP_BAD_PKEY_CNT_SHIFT 5
+ /* Abilty to support atomic operations */
+#define QED_RDMA_DEV_CAP_ATOMIC_OP_MASK 0x1
+#define QED_RDMA_DEV_CAP_ATOMIC_OP_SHIFT 6
+#define QED_RDMA_DEV_CAP_RESIZE_CQ_MASK 0x1
+#define QED_RDMA_DEV_CAP_RESIZE_CQ_SHIFT 7
+ /* Abilty to support modifying the maximum number of
+ * outstanding work requests per QP
+ */
+#define QED_RDMA_DEV_CAP_RESIZE_MAX_WR_MASK 0x1
+#define QED_RDMA_DEV_CAP_RESIZE_MAX_WR_SHIFT 8
+ /* Abilty to support automatic path migration */
+#define QED_RDMA_DEV_CAP_AUTO_PATH_MIG_MASK 0x1
+#define QED_RDMA_DEV_CAP_AUTO_PATH_MIG_SHIFT 9
+ /* Abilty to support the base memory management extensions */
+#define QED_RDMA_DEV_CAP_BASE_MEMORY_EXT_MASK 0x1
+#define QED_RDMA_DEV_CAP_BASE_MEMORY_EXT_SHIFT 10
+#define QED_RDMA_DEV_CAP_BASE_QUEUE_EXT_MASK 0x1
+#define QED_RDMA_DEV_CAP_BASE_QUEUE_EXT_SHIFT 11
+ /* Abilty to support multipile page sizes per memory region */
+#define QED_RDMA_DEV_CAP_MULTI_PAGE_PER_MR_EXT_MASK 0x1
+#define QED_RDMA_DEV_CAP_MULTI_PAGE_PER_MR_EXT_SHIFT 12
+ /* Abilty to support block list physical buffer list */
+#define QED_RDMA_DEV_CAP_BLOCK_MODE_MASK 0x1
+#define QED_RDMA_DEV_CAP_BLOCK_MODE_SHIFT 13
+ /* Abilty to support zero based virtual addresses */
+#define QED_RDMA_DEV_CAP_ZBVA_MASK 0x1
+#define QED_RDMA_DEV_CAP_ZBVA_SHIFT 14
+ /* Abilty to support local invalidate fencing */
+#define QED_RDMA_DEV_CAP_LOCAL_INV_FENCE_MASK 0x1
+#define QED_RDMA_DEV_CAP_LOCAL_INV_FENCE_SHIFT 15
+ /* Abilty to support Loopback on QP */
+#define QED_RDMA_DEV_CAP_LB_INDICATOR_MASK 0x1
+#define QED_RDMA_DEV_CAP_LB_INDICATOR_SHIFT 16
+ u64 page_size_caps;
+ u8 dev_ack_delay;
+ u32 reserved_lkey;
+ u32 bad_pkey_counter;
+ struct qed_rdma_events events;
+};
+
+enum qed_port_state {
+ QED_RDMA_PORT_UP,
+ QED_RDMA_PORT_DOWN,
+};
+
+enum qed_roce_capability {
+ QED_ROCE_V1 = 1 << 0,
+ QED_ROCE_V2 = 1 << 1,
+};
+
+struct qed_rdma_port {
+ enum qed_port_state port_state;
+ int link_speed;
+ u64 max_msg_size;
+ u8 source_gid_table_len;
+ void *source_gid_table_ptr;
+ u8 pkey_table_len;
+ void *pkey_table_ptr;
+ u32 pkey_bad_counter;
+ enum qed_roce_capability capability;
+};
+
+struct qed_rdma_cnq_params {
+ u8 num_pbl_pages;
+ u64 pbl_ptr;
+};
+
+/* The CQ Mode affects the CQ doorbell transaction size.
+ * 64/32 bit machines should configure to 32/16 bits respectively.
+ */
+enum qed_rdma_cq_mode {
+ QED_RDMA_CQ_MODE_16_BITS,
+ QED_RDMA_CQ_MODE_32_BITS,
+};
+
+struct qed_roce_dcqcn_params {
+ u8 notification_point;
+ u8 reaction_point;
+
+ /* fields for notification point */
+ u32 cnp_send_timeout;
+
+ /* fields for reaction point */
+ u32 rl_bc_rate;
+ u16 rl_max_rate;
+ u16 rl_r_ai;
+ u16 rl_r_hai;
+ u16 dcqcn_g;
+ u32 dcqcn_k_us;
+ u32 dcqcn_timeout_us;
+};
+
+struct qed_rdma_start_in_params {
+ struct qed_rdma_events *events;
+ struct qed_rdma_cnq_params cnq_pbl_list[128];
+ u8 desired_cnq;
+ enum qed_rdma_cq_mode cq_mode;
+ struct qed_roce_dcqcn_params dcqcn_params;
+ u16 max_mtu;
+ u8 mac_addr[ETH_ALEN];
+ u8 iwarp_flags;
+};
+
+struct qed_rdma_add_user_out_params {
+ u16 dpi;
+ u64 dpi_addr;
+ u64 dpi_phys_addr;
+ u32 dpi_size;
+};
+
+enum roce_mode {
+ ROCE_V1,
+ ROCE_V2_IPV4,
+ ROCE_V2_IPV6,
+ MAX_ROCE_MODE
+};
+
+union qed_gid {
+ u8 bytes[16];
+ u16 words[8];
+ u32 dwords[4];
+ u64 qwords[2];
+ u32 ipv4_addr;
+};
+
+struct qed_rdma_register_tid_in_params {
+ u32 itid;
+ enum qed_rdma_tid_type tid_type;
+ u8 key;
+ u16 pd;
+ bool local_read;
+ bool local_write;
+ bool remote_read;
+ bool remote_write;
+ bool remote_atomic;
+ bool mw_bind;
+ u64 pbl_ptr;
+ bool pbl_two_level;
+ u8 pbl_page_size_log;
+ u8 page_size_log;
+ u32 fbo;
+ u64 length;
+ u64 vaddr;
+ bool zbva;
+ bool phy_mr;
+ bool dma_mr;
+
+ bool dif_enabled;
+ u64 dif_error_addr;
+ u64 dif_runt_addr;
+};
+
+struct qed_rdma_create_srq_in_params {
+ u64 pbl_base_addr;
+ u64 prod_pair_addr;
+ u16 num_pages;
+ u16 pd_id;
+ u16 page_size;
+};
+
+struct qed_rdma_create_srq_out_params {
+ u16 srq_id;
+};
+
+struct qed_rdma_destroy_srq_in_params {
+ u16 srq_id;
+};
+
+struct qed_rdma_modify_srq_in_params {
+ u32 wqe_limit;
+ u16 srq_id;
+};
+
+struct qed_rdma_stats_out_params {
+ u64 sent_bytes;
+ u64 sent_pkts;
+ u64 rcv_bytes;
+ u64 rcv_pkts;
+};
+
+struct qed_rdma_counters_out_params {
+ u64 pd_count;
+ u64 max_pd;
+ u64 dpi_count;
+ u64 max_dpi;
+ u64 cq_count;
+ u64 max_cq;
+ u64 qp_count;
+ u64 max_qp;
+ u64 tid_count;
+ u64 max_tid;
+};
+
+#define QED_ROCE_TX_HEAD_FAILURE (1)
+#define QED_ROCE_TX_FRAG_FAILURE (2)
+
+enum qed_rdma_type {
+ QED_RDMA_TYPE_ROCE,
+};
+
+struct qed_dev_rdma_info {
+ struct qed_dev_info common;
+ enum qed_rdma_type rdma_type;
+};
+
+struct qed_rdma_ops {
+ const struct qed_common_ops *common;
+
+ int (*fill_dev_info)(struct qed_dev *cdev,
+ struct qed_dev_rdma_info *info);
+ void *(*rdma_get_rdma_ctx)(struct qed_dev *cdev);
+
+ int (*rdma_init)(struct qed_dev *dev,
+ struct qed_rdma_start_in_params *iparams);
+
+ int (*rdma_add_user)(void *rdma_cxt,
+ struct qed_rdma_add_user_out_params *oparams);
+
+ void (*rdma_remove_user)(void *rdma_cxt, u16 dpi);
+ int (*rdma_stop)(void *rdma_cxt);
+ struct qed_rdma_device* (*rdma_query_device)(void *rdma_cxt);
+ int (*rdma_get_start_sb)(struct qed_dev *cdev);
+ int (*rdma_get_min_cnq_msix)(struct qed_dev *cdev);
+ void (*rdma_cnq_prod_update)(void *rdma_cxt, u8 cnq_index, u16 prod);
+ int (*rdma_get_rdma_int)(struct qed_dev *cdev,
+ struct qed_int_info *info);
+ int (*rdma_set_rdma_int)(struct qed_dev *cdev, u16 cnt);
+};
+
+const struct qed_rdma_ops *qed_get_rdma_ops(void);
+
+#endif
diff --git a/include/linux/qed/rdma_common.h b/include/linux/qed/rdma_common.h
index 187991c..7663725 100644
--- a/include/linux/qed/rdma_common.h
+++ b/include/linux/qed/rdma_common.h
@@ -28,6 +28,7 @@
#define RDMA_MAX_PDS (64 * 1024)

#define RDMA_NUM_STATISTIC_COUNTERS MAX_NUM_VPORTS
+#define RDMA_NUM_STATISTIC_COUNTERS_BB MAX_NUM_VPORTS_BB

#define RDMA_TASK_TYPE (PROTOCOLID_ROCE)

--
1.9.3