* [PATCH] powerpc/epapr: add "memory" as a clobber to all hypercalls
From: Timur Tabi @ 2012-03-15 22:41 UTC (permalink / raw)
To: galak, linuxppc-dev
The "memory" clobber tells the compiler to ensure that all writes to memory
are committed before the hypercall is made.
"memory" is only necessary for hcalls where the Hypervisor will read or
write guest memory. However, we add it to all hcalls because the impact is
minimal, and we want to ensure that it's present for the hcalls that need it.
Signed-off-by: Timur Tabi <timur@freescale.com>
---
arch/powerpc/include/asm/epapr_hcalls.h | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h
index f3b0c2c..976835d 100644
--- a/arch/powerpc/include/asm/epapr_hcalls.h
+++ b/arch/powerpc/include/asm/epapr_hcalls.h
@@ -134,10 +134,15 @@
* whether they will be clobbered.
*
* Note that r11 can be used as an output parameter.
+ *
+ * The "memory" clobber is only necessary for hcalls where the Hypervisor
+ * will read or write guest memory. However, we add it to all hcalls because
+ * the impact is minimal, and we want to ensure that it's present for the
+ * hcalls that need it.
*/
/* List of common clobbered registers. Do not use this macro. */
-#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc"
+#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc", "memory"
#define EV_HCALL_CLOBBERS8 EV_HCALL_CLOBBERS
#define EV_HCALL_CLOBBERS7 EV_HCALL_CLOBBERS8, "r10"
--
1.7.3.4
^ permalink raw reply related
* [PATCH] Device Tree Bindings for Freescale TDM controller
From: Poonam Aggrwal @ 2012-03-16 1:30 UTC (permalink / raw)
To: devicetree-discuss, linuxppc-dev; +Cc: Sandeep Singh, Poonam Aggrwal
From: Poonam Aggrwal <poonam.aggrwal@freescale.com>
This TDM controller is available in various Freescale SOCs like MPC8315, P1020,
P1022, P1010.
Signed-off-by: Sandeep Singh <Sandeep@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
---
Documentation/devicetree/bindings/tdm/fsl-tdm.txt | 71 +++++++++++++++++++++
1 files changed, 71 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/tdm/fsl-tdm.txt
diff --git a/Documentation/devicetree/bindings/tdm/fsl-tdm.txt b/Documentation/devicetree/bindings/tdm/fsl-tdm.txt
new file mode 100644
index 0000000..61431e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/tdm/fsl-tdm.txt
@@ -0,0 +1,71 @@
+=====================================================================
+TDM Device Tree Binding
+Copyright (C) 2012 Freescale Semiconductor Inc.
+
+NOTE: The bindings described in this document are preliminary
+and subject to change.
+
+=====================================================================
+TDM (Time Division Multiplexing)
+
+DESCRIPTION
+
+The TDM is full duplex serial port designed to allow various devices including
+digital signal processors (DSPs) to communicate with a variety of serial devices
+including industry standard framers, codecs, other DSPs and microprocessors.
+
+The below properties describe the device tree bindings for Freescale TDM
+controller.
+This TDM controller is available on various Freescale Processors like
+MPC8313, P1020, P1022 and P1010.
+
+PROPERTIES
+
+ - compatible
+ Usage: required
+ Value type: <string>
+ Definition: Should contain "fsl,mpc8315-tdm".
+ So mpc8313 will have compatible = "fsl,mpc8315-tdm";
+ p1010 will have compatible "fsl,p1010-tdm", "fsl,mpc8315-tdm";
+
+ - reg
+ Usage: required
+ Value type: <tdm-reg-offset tdm-reg-size dmac-reg-offset dmac-reg-size>
+ Definition: A standard property. Specifies the physical address
+ offset and length of the TDM registers and TDM DMAC registers for
+ the device.
+
+ - clock-frequency
+ Usage: optional
+ Value type: <u32>
+ Definition: The frequency at which the TDM block is operating.
+
+ - interrupts
+ Usage: required
+ Value type: <tdm-err-intr tdm-err-intr-type dmac-intr dmac-intr-type>
+ Definition: This field defines two interrupt specifiers namely interrupt
+ number and interrupt type for TDM error and TDM DMAC.
+
+ - phy-handle
+ Usage: optional
+ Value type: <phandle>
+ Definition: Phandle of the line controller node or framer node eg. SLIC,
+ E1\T1 etc.
+
+ - fsl-max-time-slots
+ Usage: required
+ Value type: <u32>
+ Definition: Maximum number of 8-bit time slots in one TDM frame.
+ This is the maximum number which TDM hardware supports.
+
+EXAMPLE
+
+ tdm@16000 {
+ device_type = "tdm";
+ compatible = "fsl,p1010-tdm", "fsl,mpc8315-tdm";
+ reg = <0x16000 0x200 0x2c000 0x2000>;
+ clock-frequency = <0>;
+ interrupts = <16 8 62 8>;
+ phy-handle = <zarlink1>
+ fsl-max-time-slots = <128>
+ };
--
1.5.6.5
^ permalink raw reply related
* linux-next: manual merge of the trivial tree with the powerpc tree
From: Stephen Rothwell @ 2012-03-16 3:56 UTC (permalink / raw)
To: Jiri Kosina
Cc: linux-kernel, Masanari Iida, linux-next, Paul Mackerras,
linuxppc-dev
[-- Attachment #1: Type: text/plain, Size: 428 bytes --]
Hi Jiri,
Today's linux-next merge of the trivial tree got a conflict in
drivers/char/viotape.c between commit ba7a4822b48f ("powerpc: Remove some
of the legacy iSeries specific device drivers") from the powerpc tree and
commit a7ccf3775219 ("char: Fix typo in viotape.c") from the trivial tree.
The former commit removed the file, so I did that.
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
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^ permalink raw reply
* [PATCH 0/5] powerpc: clean up almos all the rest of the iSeries platform code
From: Stephen Rothwell @ 2012-03-16 4:14 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: gregkh, ppc-dev, LKML
[-- Attachment #1: Type: text/plain, Size: 2433 bytes --]
Hi all,
This series removes almost all the remaining code that is part of the
legacy iSeries platform.
arch/powerpc/boot/Makefile | 9 +--
arch/powerpc/include/asm/abs_addr.h | 21 +----
arch/powerpc/include/asm/dma.h | 4 -
arch/powerpc/include/asm/firmware.h | 9 --
arch/powerpc/include/asm/iseries/alpaca.h | 31 ------
arch/powerpc/include/asm/iseries/hv_call.h | 111 --------------------
arch/powerpc/include/asm/iseries/hv_call_sc.h | 50 ---------
arch/powerpc/include/asm/iseries/hv_call_xm.h | 61 -----------
arch/powerpc/include/asm/iseries/hv_lp_config.h | 128 -----------------------
arch/powerpc/include/asm/iseries/hv_types.h | 112 --------------------
arch/powerpc/include/asm/iseries/it_lp_queue.h | 78 --------------
arch/powerpc/include/asm/iseries/lpar_map.h | 85 ---------------
arch/powerpc/include/asm/iseries/mf.h | 51 ---------
arch/powerpc/include/asm/lppaca.h | 8 --
arch/powerpc/include/asm/spinlock.h | 5 +-
arch/powerpc/include/asm/time.h | 15 ---
arch/powerpc/kernel/asm-offsets.c | 14 ---
arch/powerpc/kernel/irq.c | 14 ---
arch/powerpc/kernel/isa-bridge.c | 3 -
arch/powerpc/kernel/lparcfg.c | 108 ++------------------
arch/powerpc/kernel/paca.c | 12 +--
arch/powerpc/kernel/pci-common.c | 15 ---
arch/powerpc/kernel/sysfs.c | 7 +-
arch/powerpc/kernel/time.c | 108 +-------------------
arch/powerpc/lib/locks.c | 24 +----
arch/powerpc/mm/hash_utils_64.c | 9 +-
arch/powerpc/mm/slb.c | 6 -
arch/powerpc/mm/stab.c | 9 --
arch/powerpc/oprofile/common.c | 3 -
arch/powerpc/platforms/powernv/pci.c | 1 +
arch/powerpc/platforms/pseries/lpar.c | 1 +
arch/powerpc/xmon/xmon.c | 28 -----
drivers/tty/hvc/hvc_vio.c | 4 -
init/do_mounts_rd.c | 4 +-
34 files changed, 31 insertions(+), 1117 deletions(-)
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
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^ permalink raw reply
* [PATCH 1/5] tty/hvc_vio: FW_FEATURE_ISERIES is no longer selectable
From: Stephen Rothwell @ 2012-03-16 4:16 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: gregkh, ppc-dev, LKML
In-Reply-To: <20120316151459.dab3cdcc2d5984b05e2d2b5c@canb.auug.org.au>
[-- Attachment #1: Type: text/plain, Size: 1032 bytes --]
so remove the code that tests for it.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
drivers/tty/hvc/hvc_vio.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)
Greg, it is probably easiest for this to go through the powerpc tree.
diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c
index fc3c3ad..3a0d53d 100644
--- a/drivers/tty/hvc/hvc_vio.c
+++ b/drivers/tty/hvc/hvc_vio.c
@@ -46,7 +46,6 @@
#include <asm/hvconsole.h>
#include <asm/vio.h>
#include <asm/prom.h>
-#include <asm/firmware.h>
#include <asm/hvsi.h>
#include <asm/udbg.h>
@@ -322,9 +321,6 @@ static int __init hvc_vio_init(void)
{
int rc;
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return -EIO;
-
/* Register as a vio device to receive callbacks */
rc = vio_register_driver(&hvc_vio_driver);
--
1.7.9.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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^ permalink raw reply related
* [PATCH 2/5] powerpc: remove FW_FEATURE ISERIES from arch code
From: Stephen Rothwell @ 2012-03-16 4:18 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: ppc-dev, LKML
In-Reply-To: <20120316151459.dab3cdcc2d5984b05e2d2b5c@canb.auug.org.au>
[-- Attachment #1: Type: text/plain, Size: 28527 bytes --]
This is no longer selectable, so just remove all the dependent code.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
arch/powerpc/include/asm/abs_addr.h | 21 +------
arch/powerpc/include/asm/firmware.h | 9 ---
arch/powerpc/include/asm/time.h | 15 -----
arch/powerpc/kernel/irq.c | 14 ----
arch/powerpc/kernel/isa-bridge.c | 3 -
arch/powerpc/kernel/lparcfg.c | 108 ++------------------------------
arch/powerpc/kernel/paca.c | 12 +---
arch/powerpc/kernel/pci-common.c | 15 -----
arch/powerpc/kernel/sysfs.c | 7 +--
arch/powerpc/kernel/time.c | 108 +--------------------------------
arch/powerpc/lib/locks.c | 24 ++------
arch/powerpc/mm/hash_utils_64.c | 9 +--
arch/powerpc/mm/slb.c | 6 --
arch/powerpc/mm/stab.c | 9 ---
arch/powerpc/oprofile/common.c | 3 -
arch/powerpc/platforms/powernv/pci.c | 1 +
arch/powerpc/platforms/pseries/lpar.c | 1 +
arch/powerpc/xmon/xmon.c | 28 ---------
18 files changed, 26 insertions(+), 367 deletions(-)
diff --git a/arch/powerpc/include/asm/abs_addr.h b/arch/powerpc/include/asm/abs_addr.h
index 5ab0b71..9d92ba0 100644
--- a/arch/powerpc/include/asm/abs_addr.h
+++ b/arch/powerpc/include/asm/abs_addr.h
@@ -17,7 +17,6 @@
#include <asm/types.h>
#include <asm/page.h>
#include <asm/prom.h>
-#include <asm/firmware.h>
struct mschunks_map {
unsigned long num_chunks;
@@ -46,30 +45,12 @@ static inline unsigned long addr_to_chunk(unsigned long addr)
static inline unsigned long phys_to_abs(unsigned long pa)
{
- unsigned long chunk;
-
- /* This is a no-op on non-iSeries */
- if (!firmware_has_feature(FW_FEATURE_ISERIES))
- return pa;
-
- chunk = addr_to_chunk(pa);
-
- if (chunk < mschunks_map.num_chunks)
- chunk = mschunks_map.mapping[chunk];
-
- return chunk_to_addr(chunk) + (pa & MSCHUNKS_OFFSET_MASK);
+ return pa;
}
/* Convenience macros */
#define virt_to_abs(va) phys_to_abs(__pa(va))
#define abs_to_virt(aa) __va(aa)
-/*
- * Converts Virtual Address to Real Address for
- * Legacy iSeries Hypervisor calls
- */
-#define iseries_hv_addr(virtaddr) \
- (0x8000000000000000UL | virt_to_abs(virtaddr))
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_ABS_ADDR_H */
diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 14db29b..ad0b751 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -41,7 +41,6 @@
#define FW_FEATURE_XDABR ASM_CONST(0x0000000000040000)
#define FW_FEATURE_MULTITCE ASM_CONST(0x0000000000080000)
#define FW_FEATURE_SPLPAR ASM_CONST(0x0000000000100000)
-#define FW_FEATURE_ISERIES ASM_CONST(0x0000000000200000)
#define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000)
#define FW_FEATURE_PS3_LV1 ASM_CONST(0x0000000000800000)
#define FW_FEATURE_BEAT ASM_CONST(0x0000000001000000)
@@ -65,8 +64,6 @@ enum {
FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO,
FW_FEATURE_PSERIES_ALWAYS = 0,
- FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
- FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2,
FW_FEATURE_POWERNV_ALWAYS = 0,
FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
@@ -79,9 +76,6 @@ enum {
#ifdef CONFIG_PPC_PSERIES
FW_FEATURE_PSERIES_POSSIBLE |
#endif
-#ifdef CONFIG_PPC_ISERIES
- FW_FEATURE_ISERIES_POSSIBLE |
-#endif
#ifdef CONFIG_PPC_POWERNV
FW_FEATURE_POWERNV_POSSIBLE |
#endif
@@ -99,9 +93,6 @@ enum {
#ifdef CONFIG_PPC_PSERIES
FW_FEATURE_PSERIES_ALWAYS &
#endif
-#ifdef CONFIG_PPC_ISERIES
- FW_FEATURE_ISERIES_ALWAYS &
-#endif
#ifdef CONFIG_PPC_POWERNV
FW_FEATURE_POWERNV_ALWAYS &
#endif
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 7eb10fb..2136f58 100644
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -18,11 +18,6 @@
#include <linux/percpu.h>
#include <asm/processor.h>
-#ifdef CONFIG_PPC_ISERIES
-#include <asm/paca.h>
-#include <asm/firmware.h>
-#include <asm/iseries/hv_call.h>
-#endif
/* time.c */
extern unsigned long tb_ticks_per_jiffy;
@@ -167,15 +162,6 @@ static inline void set_dec(int val)
#ifndef CONFIG_BOOKE
--val;
#endif
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES) &&
- get_lppaca()->shared_proc) {
- get_lppaca()->virtual_decr = val;
- if (get_dec() > val)
- HvCall_setVirtualDecr();
- return;
- }
-#endif
mtspr(SPRN_DEC, val);
#endif /* not 40x or 8xx_CPU6 */
}
@@ -217,7 +203,6 @@ DECLARE_PER_CPU(struct cpu_usage, cpu_usage_array);
#endif
extern void secondary_cpu_time_init(void);
-extern void iSeries_time_init_early(void);
DECLARE_PER_CPU(u64, decrementers_next_tb);
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index eb804e1..45b367c 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -211,11 +211,6 @@ notrace void arch_local_irq_restore(unsigned long en)
* External interrupt events on non-iseries will have caused
* interrupts to be hard-disabled, so there is no problem, we
* cannot have preempted.
- *
- * That leaves us with EEs on iSeries or decrementer interrupts,
- * which I decided to safely ignore. The preemption would have
- * itself been the result of an interrupt, upon which return we
- * will have checked for pending events on the old CPU.
*/
irq_happened = get_irq_happened();
if (!irq_happened)
@@ -458,15 +453,6 @@ void do_IRQ(struct pt_regs *regs)
irq_exit();
set_irq_regs(old_regs);
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES) &&
- get_lppaca()->int_dword.fields.decr_int) {
- get_lppaca()->int_dword.fields.decr_int = 0;
- /* Signal a fake decrementer interrupt */
- timer_interrupt(regs);
- }
-#endif
-
trace_irq_exit(regs);
}
diff --git a/arch/powerpc/kernel/isa-bridge.c b/arch/powerpc/kernel/isa-bridge.c
index 4797529..d45ec58 100644
--- a/arch/powerpc/kernel/isa-bridge.c
+++ b/arch/powerpc/kernel/isa-bridge.c
@@ -29,7 +29,6 @@
#include <asm/pci-bridge.h>
#include <asm/machdep.h>
#include <asm/ppc-pci.h>
-#include <asm/firmware.h>
unsigned long isa_io_base; /* NULL if no ISA bus */
EXPORT_SYMBOL(isa_io_base);
@@ -261,8 +260,6 @@ static struct notifier_block isa_bridge_notifier = {
*/
static int __init isa_bridge_init(void)
{
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return 0;
bus_register_notifier(&pci_bus_type, &isa_bridge_notifier);
return 0;
}
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 578f35f..ac12bd8 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -26,7 +26,6 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
-#include <asm/iseries/hv_lp_config.h>
#include <asm/lppaca.h>
#include <asm/hvcall.h>
#include <asm/firmware.h>
@@ -55,80 +54,14 @@ static unsigned long get_purr(void)
int cpu;
for_each_possible_cpu(cpu) {
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- sum_purr += lppaca_of(cpu).emulated_time_base;
- else {
- struct cpu_usage *cu;
+ struct cpu_usage *cu;
- cu = &per_cpu(cpu_usage_array, cpu);
- sum_purr += cu->current_tb;
- }
+ cu = &per_cpu(cpu_usage_array, cpu);
+ sum_purr += cu->current_tb;
}
return sum_purr;
}
-#ifdef CONFIG_PPC_ISERIES
-
-/*
- * Methods used to fetch LPAR data when running on an iSeries platform.
- */
-static int iseries_lparcfg_data(struct seq_file *m, void *v)
-{
- unsigned long pool_id;
- int shared, entitled_capacity, max_entitled_capacity;
- int processors, max_processors;
- unsigned long purr = get_purr();
-
- shared = (int)(local_paca->lppaca_ptr->shared_proc);
-
- seq_printf(m, "system_active_processors=%d\n",
- (int)HvLpConfig_getSystemPhysicalProcessors());
-
- seq_printf(m, "system_potential_processors=%d\n",
- (int)HvLpConfig_getSystemPhysicalProcessors());
-
- processors = (int)HvLpConfig_getPhysicalProcessors();
- seq_printf(m, "partition_active_processors=%d\n", processors);
-
- max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
- seq_printf(m, "partition_potential_processors=%d\n", max_processors);
-
- if (shared) {
- entitled_capacity = HvLpConfig_getSharedProcUnits();
- max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
- } else {
- entitled_capacity = processors * 100;
- max_entitled_capacity = max_processors * 100;
- }
- seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
-
- seq_printf(m, "partition_max_entitled_capacity=%d\n",
- max_entitled_capacity);
-
- if (shared) {
- pool_id = HvLpConfig_getSharedPoolIndex();
- seq_printf(m, "pool=%d\n", (int)pool_id);
- seq_printf(m, "pool_capacity=%d\n",
- (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
- 100));
- seq_printf(m, "purr=%ld\n", purr);
- }
-
- seq_printf(m, "shared_processor_mode=%d\n", shared);
-
- return 0;
-}
-
-#else /* CONFIG_PPC_ISERIES */
-
-static int iseries_lparcfg_data(struct seq_file *m, void *v)
-{
- return 0;
-}
-
-#endif /* CONFIG_PPC_ISERIES */
-
-#ifdef CONFIG_PPC_PSERIES
/*
* Methods used to fetch LPAR data when running on a pSeries platform.
*/
@@ -648,8 +581,7 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
u8 new_weight, *new_weight_ptr = &new_weight;
ssize_t retval;
- if (!firmware_has_feature(FW_FEATURE_SPLPAR) ||
- firmware_has_feature(FW_FEATURE_ISERIES))
+ if (!firmware_has_feature(FW_FEATURE_SPLPAR))
return -EINVAL;
if (count > kbuf_sz)
@@ -709,21 +641,6 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
return retval;
}
-#else /* CONFIG_PPC_PSERIES */
-
-static int pseries_lparcfg_data(struct seq_file *m, void *v)
-{
- return 0;
-}
-
-static ssize_t lparcfg_write(struct file *file, const char __user * buf,
- size_t count, loff_t * off)
-{
- return -EINVAL;
-}
-
-#endif /* CONFIG_PPC_PSERIES */
-
static int lparcfg_data(struct seq_file *m, void *v)
{
struct device_node *rootdn;
@@ -738,19 +655,11 @@ static int lparcfg_data(struct seq_file *m, void *v)
rootdn = of_find_node_by_path("/");
if (rootdn) {
tmp = of_get_property(rootdn, "model", NULL);
- if (tmp) {
+ if (tmp)
model = tmp;
- /* Skip "IBM," - see platforms/iseries/dt.c */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- model += 4;
- }
tmp = of_get_property(rootdn, "system-id", NULL);
- if (tmp) {
+ if (tmp)
system_id = tmp;
- /* Skip "IBM," - see platforms/iseries/dt.c */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- system_id += 4;
- }
lp_index_ptr = of_get_property(rootdn, "ibm,partition-no",
NULL);
if (lp_index_ptr)
@@ -761,8 +670,6 @@ static int lparcfg_data(struct seq_file *m, void *v)
seq_printf(m, "system_type=%s\n", model);
seq_printf(m, "partition_id=%d\n", (int)lp_index);
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return iseries_lparcfg_data(m, v);
return pseries_lparcfg_data(m, v);
}
@@ -786,8 +693,7 @@ static int __init lparcfg_init(void)
umode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
/* Allow writing if we have FW_FEATURE_SPLPAR */
- if (firmware_has_feature(FW_FEATURE_SPLPAR) &&
- !firmware_has_feature(FW_FEATURE_ISERIES))
+ if (firmware_has_feature(FW_FEATURE_SPLPAR))
mode |= S_IWUSR;
ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops);
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 41456ff..0bb1f98 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -11,13 +11,10 @@
#include <linux/export.h>
#include <linux/memblock.h>
-#include <asm/firmware.h>
#include <asm/lppaca.h>
#include <asm/paca.h>
#include <asm/sections.h>
#include <asm/pgtable.h>
-#include <asm/iseries/lpar_map.h>
-#include <asm/iseries/hv_types.h>
#include <asm/kexec.h>
/* This symbol is provided by the linker - let it fill in the paca
@@ -30,8 +27,8 @@ extern unsigned long __toc_start;
* The structure which the hypervisor knows about - this structure
* should not cross a page boundary. The vpa_init/register_vpa call
* is now known to fail if the lppaca structure crosses a page
- * boundary. The lppaca is also used on legacy iSeries and POWER5
- * pSeries boxes. The lppaca is 640 bytes long, and cannot readily
+ * boundary. The lppaca is also used on POWER5 pSeries boxes.
+ * The lppaca is 640 bytes long, and cannot readily
* change since the hypervisor knows its layout, so a 1kB alignment
* will suffice to ensure that it doesn't cross a page boundary.
*/
@@ -183,12 +180,9 @@ void __init allocate_pacas(void)
/*
* We can't take SLB misses on the paca, and we want to access them
* in real mode, so allocate them within the RMA and also within
- * the first segment. On iSeries they must be within the area mapped
- * by the HV, which is HvPagesToMap * HVPAGESIZE bytes.
+ * the first segment.
*/
limit = min(0x10000000ULL, ppc64_rma_size);
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- limit = min(limit, HvPagesToMap * HVPAGESIZE);
paca_size = PAGE_ALIGN(sizeof(struct paca_struct) * nr_cpu_ids);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index cce98d7..d0373bc 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -38,7 +38,6 @@
#include <asm/byteorder.h>
#include <asm/machdep.h>
#include <asm/ppc-pci.h>
-#include <asm/firmware.h>
#include <asm/eeh.h>
static DEFINE_SPINLOCK(hose_spinlock);
@@ -219,20 +218,6 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
struct of_irq oirq;
unsigned int virq;
- /* The current device-tree that iSeries generates from the HV
- * PCI informations doesn't contain proper interrupt routing,
- * and all the fallback would do is print out crap, so we
- * don't attempt to resolve the interrupts here at all, some
- * iSeries specific fixup does it.
- *
- * In the long run, we will hopefully fix the generated device-tree
- * instead.
- */
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return -1;
-#endif
-
pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
#ifdef DEBUG
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 883e74c..0c683d3 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -12,7 +12,6 @@
#include <asm/current.h>
#include <asm/processor.h>
#include <asm/cputable.h>
-#include <asm/firmware.h>
#include <asm/hvcall.h>
#include <asm/prom.h>
#include <asm/machdep.h>
@@ -341,8 +340,7 @@ static void __cpuinit register_cpu_online(unsigned int cpu)
int i, nattrs;
#ifdef CONFIG_PPC64
- if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
- cpu_has_feature(CPU_FTR_SMT))
+ if (cpu_has_feature(CPU_FTR_SMT))
device_create_file(s, &dev_attr_smt_snooze_delay);
#endif
@@ -414,8 +412,7 @@ static void unregister_cpu_online(unsigned int cpu)
BUG_ON(!c->hotpluggable);
#ifdef CONFIG_PPC64
- if (!firmware_has_feature(FW_FEATURE_ISERIES) &&
- cpu_has_feature(CPU_FTR_SMT))
+ if (cpu_has_feature(CPU_FTR_SMT))
device_remove_file(s, &dev_attr_smt_snooze_delay);
#endif
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index f81c81b..2c42cd7 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -17,8 +17,7 @@
*
* TODO (not necessarily in this file):
* - improve precision and reproducibility of timebase frequency
- * measurement at boot time. (for iSeries, we calibrate the timebase
- * against the Titan chip's clock.)
+ * measurement at boot time.
* - for astronomical applications: add a new function to get
* non ambiguous timestamps even around leap seconds. This needs
* a new timestamp format and a good name.
@@ -70,10 +69,6 @@
#include <asm/vdso_datapage.h>
#include <asm/firmware.h>
#include <asm/cputime.h>
-#ifdef CONFIG_PPC_ISERIES
-#include <asm/iseries/it_lp_queue.h>
-#include <asm/iseries/hv_call_xm.h>
-#endif
/* powerpc clocksource/clockevent code */
@@ -117,14 +112,6 @@ static struct clock_event_device decrementer_clockevent = {
DEFINE_PER_CPU(u64, decrementers_next_tb);
static DEFINE_PER_CPU(struct clock_event_device, decrementers);
-#ifdef CONFIG_PPC_ISERIES
-static unsigned long __initdata iSeries_recal_titan;
-static signed long __initdata iSeries_recal_tb;
-
-/* Forward declaration is only needed for iSereis compiles */
-static void __init clocksource_init(void);
-#endif
-
#define XSEC_PER_SEC (1024*1024)
#ifdef CONFIG_PPC64
@@ -423,74 +410,6 @@ unsigned long profile_pc(struct pt_regs *regs)
EXPORT_SYMBOL(profile_pc);
#endif
-#ifdef CONFIG_PPC_ISERIES
-
-/*
- * This function recalibrates the timebase based on the 49-bit time-of-day
- * value in the Titan chip. The Titan is much more accurate than the value
- * returned by the service processor for the timebase frequency.
- */
-
-static int __init iSeries_tb_recal(void)
-{
- unsigned long titan, tb;
-
- /* Make sure we only run on iSeries */
- if (!firmware_has_feature(FW_FEATURE_ISERIES))
- return -ENODEV;
-
- tb = get_tb();
- titan = HvCallXm_loadTod();
- if ( iSeries_recal_titan ) {
- unsigned long tb_ticks = tb - iSeries_recal_tb;
- unsigned long titan_usec = (titan - iSeries_recal_titan) >> 12;
- unsigned long new_tb_ticks_per_sec = (tb_ticks * USEC_PER_SEC)/titan_usec;
- unsigned long new_tb_ticks_per_jiffy =
- DIV_ROUND_CLOSEST(new_tb_ticks_per_sec, HZ);
- long tick_diff = new_tb_ticks_per_jiffy - tb_ticks_per_jiffy;
- char sign = '+';
- /* make sure tb_ticks_per_sec and tb_ticks_per_jiffy are consistent */
- new_tb_ticks_per_sec = new_tb_ticks_per_jiffy * HZ;
-
- if ( tick_diff < 0 ) {
- tick_diff = -tick_diff;
- sign = '-';
- }
- if ( tick_diff ) {
- if ( tick_diff < tb_ticks_per_jiffy/25 ) {
- printk( "Titan recalibrate: new tb_ticks_per_jiffy = %lu (%c%ld)\n",
- new_tb_ticks_per_jiffy, sign, tick_diff );
- tb_ticks_per_jiffy = new_tb_ticks_per_jiffy;
- tb_ticks_per_sec = new_tb_ticks_per_sec;
- calc_cputime_factors();
- vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
- setup_cputime_one_jiffy();
- }
- else {
- printk( "Titan recalibrate: FAILED (difference > 4 percent)\n"
- " new tb_ticks_per_jiffy = %lu\n"
- " old tb_ticks_per_jiffy = %lu\n",
- new_tb_ticks_per_jiffy, tb_ticks_per_jiffy );
- }
- }
- }
- iSeries_recal_titan = titan;
- iSeries_recal_tb = tb;
-
- /* Called here as now we know accurate values for the timebase */
- clocksource_init();
- return 0;
-}
-late_initcall(iSeries_tb_recal);
-
-/* Called from platform early init */
-void __init iSeries_time_init_early(void)
-{
- iSeries_recal_tb = get_tb();
- iSeries_recal_titan = HvCallXm_loadTod();
-}
-#endif /* CONFIG_PPC_ISERIES */
-
#ifdef CONFIG_IRQ_WORK
/*
@@ -547,16 +466,6 @@ void arch_irq_work_raise(void)
#endif /* CONFIG_IRQ_WORK */
/*
- * For iSeries shared processors, we have to let the hypervisor
- * set the hardware decrementer. We set a virtual decrementer
- * in the lppaca and call the hypervisor if the virtual
- * decrementer is less than the current value in the hardware
- * decrementer. (almost always the new decrementer value will
- * be greater than the current hardware decementer so the hypervisor
- * call will not be needed)
- */
-
-/*
* timer_interrupt - gets called when the decrementer overflows,
* with interrupts disabled.
*/
@@ -599,20 +508,10 @@ void timer_interrupt(struct pt_regs * regs)
irq_work_run();
}
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- get_lppaca()->int_dword.fields.decr_int = 0;
-#endif
-
*next_tb = ~(u64)0;
if (evt->event_handler)
evt->event_handler(evt);
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES) && hvlpevent_is_pending())
- process_hvlpevents();
-#endif
-
#ifdef CONFIG_PPC64
/* collect purr register values often, for accurate calculations */
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
@@ -984,9 +883,8 @@ void __init time_init(void)
*/
start_cpu_decrementer();
- /* Register the clocksource, if we're not running on iSeries */
- if (!firmware_has_feature(FW_FEATURE_ISERIES))
- clocksource_init();
+ /* Register the clocksource */
+ clocksource_init();
init_decrementer_clockevent();
}
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index a6ebba5..bb7cfec 100644
--- a/arch/powerpc/lib/locks.c
+++ b/arch/powerpc/lib/locks.c
@@ -19,11 +19,9 @@
#include <linux/smp.h>
/* waiting for a spinlock... */
-#if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES)
+#if defined(CONFIG_PPC_SPLPAR)
#include <asm/hvcall.h>
-#include <asm/iseries/hv_call.h>
#include <asm/smp.h>
-#include <asm/firmware.h>
void __spin_yield(arch_spinlock_t *lock)
{
@@ -40,14 +38,8 @@ void __spin_yield(arch_spinlock_t *lock)
rmb();
if (lock->slock != lock_value)
return; /* something has changed */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
- ((u64)holder_cpu << 32) | yield_count);
-#ifdef CONFIG_PPC_SPLPAR
- else
- plpar_hcall_norets(H_CONFER,
- get_hard_smp_processor_id(holder_cpu), yield_count);
-#endif
+ plpar_hcall_norets(H_CONFER,
+ get_hard_smp_processor_id(holder_cpu), yield_count);
}
/*
@@ -71,14 +63,8 @@ void __rw_yield(arch_rwlock_t *rw)
rmb();
if (rw->lock != lock_value)
return; /* something has changed */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- HvCall2(HvCallBaseYieldProcessor, HvCall_YieldToProc,
- ((u64)holder_cpu << 32) | yield_count);
-#ifdef CONFIG_PPC_SPLPAR
- else
- plpar_hcall_norets(H_CONFER,
- get_hard_smp_processor_id(holder_cpu), yield_count);
-#endif
+ plpar_hcall_norets(H_CONFER,
+ get_hard_smp_processor_id(holder_cpu), yield_count);
}
#endif
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index b534bba..3e8c37a 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -56,6 +56,7 @@
#include <asm/udbg.h>
#include <asm/code-patching.h>
#include <asm/fadump.h>
+#include <asm/firmware.h>
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
@@ -756,12 +757,9 @@ void __init early_init_mmu(void)
*/
htab_initialize();
- /* Initialize stab / SLB management except on iSeries
- */
+ /* Initialize stab / SLB management */
if (mmu_has_feature(MMU_FTR_SLB))
slb_initialize();
- else if (!firmware_has_feature(FW_FEATURE_ISERIES))
- stab_initialize(get_paca()->stab_real);
}
#ifdef CONFIG_SMP
@@ -772,8 +770,7 @@ void __cpuinit early_init_mmu_secondary(void)
mtspr(SPRN_SDR1, _SDR1);
/* Initialize STAB/SLB. We use a virtual address as it works
- * in real mode on pSeries and we want a virtual address on
- * iSeries anyway
+ * in real mode on pSeries.
*/
if (mmu_has_feature(MMU_FTR_SLB))
slb_initialize();
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index e22276c..a538c80 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -21,7 +21,6 @@
#include <asm/cputable.h>
#include <asm/cacheflush.h>
#include <asm/smp.h>
-#include <asm/firmware.h>
#include <linux/compiler.h>
#include <asm/udbg.h>
#include <asm/code-patching.h>
@@ -307,11 +306,6 @@ void slb_initialize(void)
get_paca()->stab_rr = SLB_NUM_BOLTED;
- /* On iSeries the bolted entries have already been set up by
- * the hypervisor from the lparMap data in head.S */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return;
-
lflags = SLB_VSID_KERNEL | linear_llp;
vflags = SLB_VSID_KERNEL | vmalloc_llp;
diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c
index 41e3164..9106ebb 100644
--- a/arch/powerpc/mm/stab.c
+++ b/arch/powerpc/mm/stab.c
@@ -21,8 +21,6 @@
#include <asm/cputable.h>
#include <asm/prom.h>
#include <asm/abs_addr.h>
-#include <asm/firmware.h>
-#include <asm/iseries/hv_call.h>
struct stab_entry {
unsigned long esid_data;
@@ -285,12 +283,5 @@ void stab_initialize(unsigned long stab)
/* Set ASR */
stabreal = get_paca()->stab_real | 0x1ul;
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES)) {
- HvCall1(HvCallBaseSetASR, stabreal);
- return;
- }
-#endif /* CONFIG_PPC_ISERIES */
-
mtspr(SPRN_ASR, stabreal);
}
diff --git a/arch/powerpc/oprofile/common.c b/arch/powerpc/oprofile/common.c
index d65e68f..6f01624 100644
--- a/arch/powerpc/oprofile/common.c
+++ b/arch/powerpc/oprofile/common.c
@@ -195,9 +195,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
if (!cur_cpu_spec->oprofile_cpu_type)
return -ENODEV;
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return -ENODEV;
-
switch (cur_cpu_spec->oprofile_type) {
#ifdef CONFIG_PPC_BOOK3S_64
#ifdef CONFIG_OPROFILE_CELL
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index f92b9ef..214478d 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -31,6 +31,7 @@
#include <asm/iommu.h>
#include <asm/tce.h>
#include <asm/abs_addr.h>
+#include <asm/firmware.h>
#include "powernv.h"
#include "pci.h"
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 7bc73af..5f3ef87 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -41,6 +41,7 @@
#include <asm/udbg.h>
#include <asm/smp.h>
#include <asm/trace.h>
+#include <asm/firmware.h>
#include "plpar_wrappers.h"
#include "pseries.h"
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 974a47b..68a9cbb 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -39,7 +39,6 @@
#include <asm/irq_regs.h>
#include <asm/spu.h>
#include <asm/spu_priv1.h>
-#include <asm/firmware.h>
#include <asm/setjmp.h>
#include <asm/reg.h>
@@ -1635,25 +1634,6 @@ static void super_regs(void)
mfspr(SPRN_DEC), mfspr(SPRN_SPRG2));
printf("sp = "REG" sprg3= "REG"\n", sp, mfspr(SPRN_SPRG3));
printf("toc = "REG" dar = "REG"\n", toc, mfspr(SPRN_DAR));
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES)) {
- struct paca_struct *ptrPaca;
- struct lppaca *ptrLpPaca;
-
- /* Dump out relevant Paca data areas. */
- printf("Paca: \n");
- ptrPaca = local_paca;
-
- printf(" Local Processor Control Area (LpPaca): \n");
- ptrLpPaca = ptrPaca->lppaca_ptr;
- printf(" Saved Srr0=%.16lx Saved Srr1=%.16lx \n",
- ptrLpPaca->saved_srr0, ptrLpPaca->saved_srr1);
- printf(" Saved Gpr3=%.16lx Saved Gpr4=%.16lx \n",
- ptrLpPaca->saved_gpr3, ptrLpPaca->saved_gpr4);
- printf(" Saved Gpr5=%.16lx \n",
- ptrLpPaca->gpr5_dword.saved_gpr5);
- }
-#endif
return;
}
@@ -2856,10 +2836,6 @@ static void dump_tlb_book3e(void)
static void xmon_init(int enable)
{
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return;
-#endif
if (enable) {
__debugger = xmon;
__debugger_ipi = xmon_ipi;
@@ -2896,10 +2872,6 @@ static struct sysrq_key_op sysrq_xmon_op = {
static int __init setup_xmon_sysrq(void)
{
-#ifdef CONFIG_PPC_ISERIES
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- return 0;
-#endif
register_sysrq_key('x', &sysrq_xmon_op);
return 0;
}
--
1.7.9.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply related
* [PATCH 3/5] init: remove CONFIG_PPC_ISERIES
From: Stephen Rothwell @ 2012-03-16 4:19 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: ppc-dev, LKML
In-Reply-To: <20120316151459.dab3cdcc2d5984b05e2d2b5c@canb.auug.org.au>
[-- Attachment #1: Type: text/plain, Size: 1077 bytes --]
It is no longer selectable, so remove the check for it.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
init/do_mounts_rd.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 887629e..01f1306 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -178,7 +178,7 @@ int __init rd_load_image(char *from)
char *buf = NULL;
unsigned short rotate = 0;
decompress_fn decompressor = NULL;
-#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES)
+#if !defined(CONFIG_S390)
char rotator[4] = { '|' , '/' , '-' , '\\' };
#endif
@@ -264,7 +264,7 @@ int __init rd_load_image(char *from)
}
sys_read(in_fd, buf, BLOCK_SIZE);
sys_write(out_fd, buf, BLOCK_SIZE);
-#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES)
+#if !defined(CONFIG_S390)
if (!(i % 16)) {
printk("%c\b", rotator[rotate & 0x3]);
rotate++;
--
1.7.9.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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^ permalink raw reply related
* [PATCH 4/5] powerpc: remove the remaining CONFIG_PPC_ISERIES pieces
From: Stephen Rothwell @ 2012-03-16 4:20 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: ppc-dev, LKML
In-Reply-To: <20120316151459.dab3cdcc2d5984b05e2d2b5c@canb.auug.org.au>
[-- Attachment #1: Type: text/plain, Size: 5122 bytes --]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
arch/powerpc/boot/Makefile | 9 +--------
arch/powerpc/include/asm/dma.h | 4 ----
arch/powerpc/include/asm/lppaca.h | 8 --------
arch/powerpc/include/asm/spinlock.h | 5 ++---
arch/powerpc/kernel/asm-offsets.c | 14 --------------
5 files changed, 3 insertions(+), 37 deletions(-)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 8844a17..6042e93 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -184,7 +184,6 @@ image-$(CONFIG_PPC_EFIKA) += zImage.chrp
image-$(CONFIG_PPC_PMAC) += zImage.pmac
image-$(CONFIG_PPC_HOLLY) += dtbImage.holly
image-$(CONFIG_PPC_PRPMC2800) += dtbImage.prpmc2800
-image-$(CONFIG_PPC_ISERIES) += zImage.iseries
image-$(CONFIG_DEFAULT_UIMAGE) += uImage
image-$(CONFIG_EPAPR_BOOT) += zImage.epapr
@@ -311,12 +310,6 @@ $(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb
$(obj)/vmlinux.strip: vmlinux
$(STRIP) -s -R .comment $< -o $@
-# The iseries hypervisor won't take an ET_DYN executable, so this
-# changes the type (byte 17) in the file to ET_EXEC (2).
-$(obj)/zImage.iseries: vmlinux
- $(STRIP) -s -R .comment $< -o $@
- printf "\x02" | dd of=$@ conv=notrunc bs=1 seek=17
-
$(obj)/uImage: vmlinux $(wrapperbits)
$(call if_changed,wrap,uboot)
@@ -364,7 +357,7 @@ install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y))
# anything not in $(targets)
clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
- zImage.iseries zImage.miboot zImage.pmac zImage.pseries \
+ zImage.miboot zImage.pmac zImage.pseries \
zImage.maple simpleImage.* otheros.bld *.dtb
# clean up files cached by wrapper
diff --git a/arch/powerpc/include/asm/dma.h b/arch/powerpc/include/asm/dma.h
index a7e06e2..adadb99 100644
--- a/arch/powerpc/include/asm/dma.h
+++ b/arch/powerpc/include/asm/dma.h
@@ -34,8 +34,6 @@
/* Doesn't really apply... */
#define MAX_DMA_ADDRESS (~0UL)
-#if !defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI)
-
#ifdef HAVE_REALLY_SLOW_DMA_CONTROLLER
#define dma_outb outb_p
#else
@@ -354,7 +352,5 @@ extern int isa_dma_bridge_buggy;
#define isa_dma_bridge_buggy (0)
#endif
-#endif /* !defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI) */
-
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DMA_H */
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h
index e0298d2..a76254a 100644
--- a/arch/powerpc/include/asm/lppaca.h
+++ b/arch/powerpc/include/asm/lppaca.h
@@ -41,15 +41,7 @@
* We only have to have statically allocated lppaca structs on
* legacy iSeries, which supports at most 64 cpus.
*/
-#ifdef CONFIG_PPC_ISERIES
-#if NR_CPUS < 64
-#define NR_LPPACAS NR_CPUS
-#else
-#define NR_LPPACAS 64
-#endif
-#else /* not iSeries */
#define NR_LPPACAS 1
-#endif
/* The Hypervisor barfs if the lppaca crosses a page boundary. A 1k
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index f9611bd..7124fc0 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -23,7 +23,6 @@
#ifdef CONFIG_PPC64
#include <asm/paca.h>
#include <asm/hvcall.h>
-#include <asm/iseries/hv_call.h>
#endif
#include <asm/asm-compat.h>
#include <asm/synch.h>
@@ -95,12 +94,12 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
* value.
*/
-#if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES)
+#if defined(CONFIG_PPC_SPLPAR)
/* We only yield to the hypervisor if we are in shared processor mode */
#define SHARED_PROCESSOR (get_lppaca()->shared_proc)
extern void __spin_yield(arch_spinlock_t *lock);
extern void __rw_yield(arch_rwlock_t *lock);
-#else /* SPLPAR || ISERIES */
+#else /* SPLPAR */
#define __spin_yield(x) barrier()
#define __rw_yield(x) barrier()
#define SHARED_PROCESSOR 0
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index cdd0d26..cc492e4 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -46,9 +46,6 @@
#include <asm/hvcall.h>
#include <asm/xics.h>
#endif
-#ifdef CONFIG_PPC_ISERIES
-#include <asm/iseries/alpaca.h>
-#endif
#ifdef CONFIG_PPC_POWERNV
#include <asm/opal.h>
#endif
@@ -384,17 +381,6 @@ int main(void)
DEFINE(BUG_ENTRY_SIZE, sizeof(struct bug_entry));
#endif
-#ifdef CONFIG_PPC_ISERIES
- /* the assembler miscalculates the VSID values */
- DEFINE(PAGE_OFFSET_ESID, GET_ESID(PAGE_OFFSET));
- DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET));
- DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START));
- DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START));
-
- /* alpaca */
- DEFINE(ALPACA_SIZE, sizeof(struct alpaca));
-#endif
-
DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
DEFINE(PTE_SIZE, sizeof(pte_t));
--
1.7.9.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply related
* [PATCH 5/5] powerpc: remove the rest of the legacy iSeries include files
From: Stephen Rothwell @ 2012-03-16 4:22 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: ppc-dev, LKML
In-Reply-To: <20120316151459.dab3cdcc2d5984b05e2d2b5c@canb.auug.org.au>
[-- Attachment #1: Type: text/plain, Size: 29372 bytes --]
since they are not referenced any more.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
arch/powerpc/include/asm/iseries/alpaca.h | 31 ------
arch/powerpc/include/asm/iseries/hv_call.h | 111 --------------------
arch/powerpc/include/asm/iseries/hv_call_sc.h | 50 ---------
arch/powerpc/include/asm/iseries/hv_call_xm.h | 61 -----------
arch/powerpc/include/asm/iseries/hv_lp_config.h | 128 -----------------------
arch/powerpc/include/asm/iseries/hv_types.h | 112 --------------------
arch/powerpc/include/asm/iseries/it_lp_queue.h | 78 --------------
arch/powerpc/include/asm/iseries/lpar_map.h | 85 ---------------
arch/powerpc/include/asm/iseries/mf.h | 51 ---------
9 files changed, 0 insertions(+), 707 deletions(-)
delete mode 100644 arch/powerpc/include/asm/iseries/alpaca.h
delete mode 100644 arch/powerpc/include/asm/iseries/hv_call.h
delete mode 100644 arch/powerpc/include/asm/iseries/hv_call_sc.h
delete mode 100644 arch/powerpc/include/asm/iseries/hv_call_xm.h
delete mode 100644 arch/powerpc/include/asm/iseries/hv_lp_config.h
delete mode 100644 arch/powerpc/include/asm/iseries/hv_types.h
delete mode 100644 arch/powerpc/include/asm/iseries/it_lp_queue.h
delete mode 100644 arch/powerpc/include/asm/iseries/lpar_map.h
delete mode 100644 arch/powerpc/include/asm/iseries/mf.h
diff --git a/arch/powerpc/include/asm/iseries/alpaca.h b/arch/powerpc/include/asm/iseries/alpaca.h
deleted file mode 100644
index c0cce67..0000000
--- a/arch/powerpc/include/asm/iseries/alpaca.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright © 2008 Stephen Rothwell IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_ALPACA_H
-#define _ASM_POWERPC_ISERIES_ALPACA_H
-
-/*
- * This is the part of the paca that the iSeries hypervisor
- * needs to be statically initialised. Immediately after boot
- * we switch to the normal Linux paca.
- */
-struct alpaca {
- struct lppaca *lppaca_ptr; /* Pointer to LpPaca for PLIC */
- const void *reg_save_ptr; /* Pointer to LpRegSave for PLIC */
-};
-
-#endif /* _ASM_POWERPC_ISERIES_ALPACA_H */
diff --git a/arch/powerpc/include/asm/iseries/hv_call.h b/arch/powerpc/include/asm/iseries/hv_call.h
deleted file mode 100644
index 162d653..0000000
--- a/arch/powerpc/include/asm/iseries/hv_call.h
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * This file contains the "hypervisor call" interface which is used to
- * drive the hypervisor from the OS.
- */
-#ifndef _ASM_POWERPC_ISERIES_HV_CALL_H
-#define _ASM_POWERPC_ISERIES_HV_CALL_H
-
-#include <asm/iseries/hv_call_sc.h>
-#include <asm/iseries/hv_types.h>
-#include <asm/paca.h>
-
-/* Type of yield for HvCallBaseYieldProcessor */
-#define HvCall_YieldTimed 0 /* Yield until specified time (tb) */
-#define HvCall_YieldToActive 1 /* Yield until all active procs have run */
-#define HvCall_YieldToProc 2 /* Yield until the specified processor has run */
-
-/* interrupt masks for setEnabledInterrupts */
-#define HvCall_MaskIPI 0x00000001
-#define HvCall_MaskLpEvent 0x00000002
-#define HvCall_MaskLpProd 0x00000004
-#define HvCall_MaskTimeout 0x00000008
-
-/* Log buffer formats */
-#define HvCall_LogBuffer_ASCII 0
-#define HvCall_LogBuffer_EBCDIC 1
-
-#define HvCallBaseAckDeferredInts HvCallBase + 0
-#define HvCallBaseCpmPowerOff HvCallBase + 1
-#define HvCallBaseGetHwPatch HvCallBase + 2
-#define HvCallBaseReIplSpAttn HvCallBase + 3
-#define HvCallBaseSetASR HvCallBase + 4
-#define HvCallBaseSetASRAndRfi HvCallBase + 5
-#define HvCallBaseSetIMR HvCallBase + 6
-#define HvCallBaseSendIPI HvCallBase + 7
-#define HvCallBaseTerminateMachine HvCallBase + 8
-#define HvCallBaseTerminateMachineSrc HvCallBase + 9
-#define HvCallBaseProcessPlicInterrupts HvCallBase + 10
-#define HvCallBaseIsPrimaryCpmOrMsdIpl HvCallBase + 11
-#define HvCallBaseSetVirtualSIT HvCallBase + 12
-#define HvCallBaseVaryOffThisProcessor HvCallBase + 13
-#define HvCallBaseVaryOffMemoryChunk HvCallBase + 14
-#define HvCallBaseVaryOffInteractivePercentage HvCallBase + 15
-#define HvCallBaseSendLpProd HvCallBase + 16
-#define HvCallBaseSetEnabledInterrupts HvCallBase + 17
-#define HvCallBaseYieldProcessor HvCallBase + 18
-#define HvCallBaseVaryOffSharedProcUnits HvCallBase + 19
-#define HvCallBaseSetVirtualDecr HvCallBase + 20
-#define HvCallBaseClearLogBuffer HvCallBase + 21
-#define HvCallBaseGetLogBufferCodePage HvCallBase + 22
-#define HvCallBaseGetLogBufferFormat HvCallBase + 23
-#define HvCallBaseGetLogBufferLength HvCallBase + 24
-#define HvCallBaseReadLogBuffer HvCallBase + 25
-#define HvCallBaseSetLogBufferFormatAndCodePage HvCallBase + 26
-#define HvCallBaseWriteLogBuffer HvCallBase + 27
-#define HvCallBaseRouter28 HvCallBase + 28
-#define HvCallBaseRouter29 HvCallBase + 29
-#define HvCallBaseRouter30 HvCallBase + 30
-#define HvCallBaseSetDebugBus HvCallBase + 31
-
-#define HvCallCcSetDABR HvCallCc + 7
-
-static inline void HvCall_setVirtualDecr(void)
-{
- /*
- * Ignore any error return codes - most likely means that the
- * target value for the LP has been increased and this vary off
- * would bring us below the new target.
- */
- HvCall0(HvCallBaseSetVirtualDecr);
-}
-
-static inline void HvCall_yieldProcessor(unsigned typeOfYield, u64 yieldParm)
-{
- HvCall2(HvCallBaseYieldProcessor, typeOfYield, yieldParm);
-}
-
-static inline void HvCall_setEnabledInterrupts(u64 enabledInterrupts)
-{
- HvCall1(HvCallBaseSetEnabledInterrupts, enabledInterrupts);
-}
-
-static inline void HvCall_setLogBufferFormatAndCodepage(int format,
- u32 codePage)
-{
- HvCall2(HvCallBaseSetLogBufferFormatAndCodePage, format, codePage);
-}
-
-extern void HvCall_writeLogBuffer(const void *buffer, u64 bufLen);
-
-static inline void HvCall_sendIPI(struct paca_struct *targetPaca)
-{
- HvCall1(HvCallBaseSendIPI, targetPaca->paca_index);
-}
-
-#endif /* _ASM_POWERPC_ISERIES_HV_CALL_H */
diff --git a/arch/powerpc/include/asm/iseries/hv_call_sc.h b/arch/powerpc/include/asm/iseries/hv_call_sc.h
deleted file mode 100644
index f5d2109..0000000
--- a/arch/powerpc/include/asm/iseries/hv_call_sc.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_HV_CALL_SC_H
-#define _ASM_POWERPC_ISERIES_HV_CALL_SC_H
-
-#include <linux/types.h>
-
-#define HvCallBase 0x8000000000000000ul
-#define HvCallCc 0x8001000000000000ul
-#define HvCallCfg 0x8002000000000000ul
-#define HvCallEvent 0x8003000000000000ul
-#define HvCallHpt 0x8004000000000000ul
-#define HvCallPci 0x8005000000000000ul
-#define HvCallSm 0x8007000000000000ul
-#define HvCallXm 0x8009000000000000ul
-
-extern u64 HvCall0(u64);
-extern u64 HvCall1(u64, u64);
-extern u64 HvCall2(u64, u64, u64);
-extern u64 HvCall3(u64, u64, u64, u64);
-extern u64 HvCall4(u64, u64, u64, u64, u64);
-extern u64 HvCall5(u64, u64, u64, u64, u64, u64);
-extern u64 HvCall6(u64, u64, u64, u64, u64, u64, u64);
-extern u64 HvCall7(u64, u64, u64, u64, u64, u64, u64, u64);
-
-extern u64 HvCall0Ret16(u64, void *);
-extern u64 HvCall1Ret16(u64, void *, u64);
-extern u64 HvCall2Ret16(u64, void *, u64, u64);
-extern u64 HvCall3Ret16(u64, void *, u64, u64, u64);
-extern u64 HvCall4Ret16(u64, void *, u64, u64, u64, u64);
-extern u64 HvCall5Ret16(u64, void *, u64, u64, u64, u64, u64);
-extern u64 HvCall6Ret16(u64, void *, u64, u64, u64, u64, u64, u64);
-extern u64 HvCall7Ret16(u64, void *, u64, u64 ,u64 ,u64 ,u64 ,u64 ,u64);
-
-#endif /* _ASM_POWERPC_ISERIES_HV_CALL_SC_H */
diff --git a/arch/powerpc/include/asm/iseries/hv_call_xm.h b/arch/powerpc/include/asm/iseries/hv_call_xm.h
deleted file mode 100644
index 392ac3f..0000000
--- a/arch/powerpc/include/asm/iseries/hv_call_xm.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * This file contains the "hypervisor call" interface which is used to
- * drive the hypervisor from SLIC.
- */
-#ifndef _ASM_POWERPC_ISERIES_HV_CALL_XM_H
-#define _ASM_POWERPC_ISERIES_HV_CALL_XM_H
-
-#include <asm/iseries/hv_call_sc.h>
-#include <asm/iseries/hv_types.h>
-
-#define HvCallXmGetTceTableParms HvCallXm + 0
-#define HvCallXmTestBus HvCallXm + 1
-#define HvCallXmConnectBusUnit HvCallXm + 2
-#define HvCallXmLoadTod HvCallXm + 8
-#define HvCallXmTestBusUnit HvCallXm + 9
-#define HvCallXmSetTce HvCallXm + 11
-#define HvCallXmSetTces HvCallXm + 13
-
-static inline void HvCallXm_getTceTableParms(u64 cb)
-{
- HvCall1(HvCallXmGetTceTableParms, cb);
-}
-
-static inline u64 HvCallXm_setTce(u64 tceTableToken, u64 tceOffset, u64 tce)
-{
- return HvCall3(HvCallXmSetTce, tceTableToken, tceOffset, tce);
-}
-
-static inline u64 HvCallXm_setTces(u64 tceTableToken, u64 tceOffset,
- u64 numTces, u64 tce1, u64 tce2, u64 tce3, u64 tce4)
-{
- return HvCall7(HvCallXmSetTces, tceTableToken, tceOffset, numTces,
- tce1, tce2, tce3, tce4);
-}
-
-static inline u64 HvCallXm_testBus(u16 busNumber)
-{
- return HvCall1(HvCallXmTestBus, busNumber);
-}
-
-static inline u64 HvCallXm_testBusUnit(u16 busNumber, u8 subBusNumber,
- u8 deviceId)
-{
- return HvCall2(HvCallXmTestBusUnit, busNumber,
- (subBusNumber << 8) | deviceId);
-}
-
-static inline u64 HvCallXm_connectBusUnit(u16 busNumber, u8 subBusNumber,
- u8 deviceId, u64 interruptToken)
-{
- return HvCall5(HvCallXmConnectBusUnit, busNumber,
- (subBusNumber << 8) | deviceId, interruptToken, 0,
- 0 /* HvLpConfig::mapDsaToQueueIndex(HvLpDSA(busNumber, xBoard, xCard)) */);
-}
-
-static inline u64 HvCallXm_loadTod(void)
-{
- return HvCall0(HvCallXmLoadTod);
-}
-
-#endif /* _ASM_POWERPC_ISERIES_HV_CALL_XM_H */
diff --git a/arch/powerpc/include/asm/iseries/hv_lp_config.h b/arch/powerpc/include/asm/iseries/hv_lp_config.h
deleted file mode 100644
index a006fd1..0000000
--- a/arch/powerpc/include/asm/iseries/hv_lp_config.h
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_HV_LP_CONFIG_H
-#define _ASM_POWERPC_ISERIES_HV_LP_CONFIG_H
-
-/*
- * This file contains the interface to the LPAR configuration data
- * to determine which resources should be allocated to each partition.
- */
-
-#include <asm/iseries/hv_call_sc.h>
-#include <asm/iseries/hv_types.h>
-
-enum {
- HvCallCfg_Cur = 0,
- HvCallCfg_Init = 1,
- HvCallCfg_Max = 2,
- HvCallCfg_Min = 3
-};
-
-#define HvCallCfgGetSystemPhysicalProcessors HvCallCfg + 6
-#define HvCallCfgGetPhysicalProcessors HvCallCfg + 7
-#define HvCallCfgGetMsChunks HvCallCfg + 9
-#define HvCallCfgGetSharedPoolIndex HvCallCfg + 20
-#define HvCallCfgGetSharedProcUnits HvCallCfg + 21
-#define HvCallCfgGetNumProcsInSharedPool HvCallCfg + 22
-#define HvCallCfgGetVirtualLanIndexMap HvCallCfg + 30
-#define HvCallCfgGetHostingLpIndex HvCallCfg + 32
-
-extern HvLpIndex HvLpConfig_getLpIndex_outline(void);
-extern HvLpIndex HvLpConfig_getLpIndex(void);
-extern HvLpIndex HvLpConfig_getPrimaryLpIndex(void);
-
-static inline u64 HvLpConfig_getMsChunks(void)
-{
- return HvCall2(HvCallCfgGetMsChunks, HvLpConfig_getLpIndex(),
- HvCallCfg_Cur);
-}
-
-static inline u64 HvLpConfig_getSystemPhysicalProcessors(void)
-{
- return HvCall0(HvCallCfgGetSystemPhysicalProcessors);
-}
-
-static inline u64 HvLpConfig_getNumProcsInSharedPool(HvLpSharedPoolIndex sPI)
-{
- return (u16)HvCall1(HvCallCfgGetNumProcsInSharedPool, sPI);
-}
-
-static inline u64 HvLpConfig_getPhysicalProcessors(void)
-{
- return HvCall2(HvCallCfgGetPhysicalProcessors, HvLpConfig_getLpIndex(),
- HvCallCfg_Cur);
-}
-
-static inline HvLpSharedPoolIndex HvLpConfig_getSharedPoolIndex(void)
-{
- return HvCall1(HvCallCfgGetSharedPoolIndex, HvLpConfig_getLpIndex());
-}
-
-static inline u64 HvLpConfig_getSharedProcUnits(void)
-{
- return HvCall2(HvCallCfgGetSharedProcUnits, HvLpConfig_getLpIndex(),
- HvCallCfg_Cur);
-}
-
-static inline u64 HvLpConfig_getMaxSharedProcUnits(void)
-{
- return HvCall2(HvCallCfgGetSharedProcUnits, HvLpConfig_getLpIndex(),
- HvCallCfg_Max);
-}
-
-static inline u64 HvLpConfig_getMaxPhysicalProcessors(void)
-{
- return HvCall2(HvCallCfgGetPhysicalProcessors, HvLpConfig_getLpIndex(),
- HvCallCfg_Max);
-}
-
-static inline HvLpVirtualLanIndexMap HvLpConfig_getVirtualLanIndexMapForLp(
- HvLpIndex lp)
-{
- /*
- * This is a new function in V5R1 so calls to this on older
- * hypervisors will return -1
- */
- u64 retVal = HvCall1(HvCallCfgGetVirtualLanIndexMap, lp);
- if (retVal == -1)
- retVal = 0;
- return retVal;
-}
-
-static inline HvLpVirtualLanIndexMap HvLpConfig_getVirtualLanIndexMap(void)
-{
- return HvLpConfig_getVirtualLanIndexMapForLp(
- HvLpConfig_getLpIndex_outline());
-}
-
-static inline int HvLpConfig_doLpsCommunicateOnVirtualLan(HvLpIndex lp1,
- HvLpIndex lp2)
-{
- HvLpVirtualLanIndexMap virtualLanIndexMap1 =
- HvLpConfig_getVirtualLanIndexMapForLp(lp1);
- HvLpVirtualLanIndexMap virtualLanIndexMap2 =
- HvLpConfig_getVirtualLanIndexMapForLp(lp2);
- return ((virtualLanIndexMap1 & virtualLanIndexMap2) != 0);
-}
-
-static inline HvLpIndex HvLpConfig_getHostingLpIndex(HvLpIndex lp)
-{
- return HvCall1(HvCallCfgGetHostingLpIndex, lp);
-}
-
-#endif /* _ASM_POWERPC_ISERIES_HV_LP_CONFIG_H */
diff --git a/arch/powerpc/include/asm/iseries/hv_types.h b/arch/powerpc/include/asm/iseries/hv_types.h
deleted file mode 100644
index c3e6d2a..0000000
--- a/arch/powerpc/include/asm/iseries/hv_types.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_HV_TYPES_H
-#define _ASM_POWERPC_ISERIES_HV_TYPES_H
-
-/*
- * General typedefs for the hypervisor.
- */
-
-#include <asm/types.h>
-
-typedef u8 HvLpIndex;
-typedef u16 HvLpInstanceId;
-typedef u64 HvLpTOD;
-typedef u64 HvLpSystemSerialNum;
-typedef u8 HvLpDeviceSerialNum[12];
-typedef u16 HvLpSanHwSet;
-typedef u16 HvLpBus;
-typedef u16 HvLpBoard;
-typedef u16 HvLpCard;
-typedef u8 HvLpDeviceType[4];
-typedef u8 HvLpDeviceModel[3];
-typedef u64 HvIoToken;
-typedef u8 HvLpName[8];
-typedef u32 HvIoId;
-typedef u64 HvRealMemoryIndex;
-typedef u32 HvLpIndexMap; /* Must hold HVMAXARCHITECTEDLPS bits!!! */
-typedef u16 HvLpVrmIndex;
-typedef u32 HvXmGenerationId;
-typedef u8 HvLpBusPool;
-typedef u8 HvLpSharedPoolIndex;
-typedef u16 HvLpSharedProcUnitsX100;
-typedef u8 HvLpVirtualLanIndex;
-typedef u16 HvLpVirtualLanIndexMap; /* Must hold HVMAXARCHITECTEDVIRTUALLANS bits!!! */
-typedef u16 HvBusNumber; /* Hypervisor Bus Number */
-typedef u8 HvSubBusNumber; /* Hypervisor SubBus Number */
-typedef u8 HvAgentId; /* Hypervisor DevFn */
-
-
-#define HVMAXARCHITECTEDLPS 32
-#define HVMAXARCHITECTEDVIRTUALLANS 16
-#define HVMAXARCHITECTEDVIRTUALDISKS 32
-#define HVMAXARCHITECTEDVIRTUALCDROMS 8
-#define HVMAXARCHITECTEDVIRTUALTAPES 8
-#define HVCHUNKSIZE (256 * 1024)
-#define HVPAGESIZE (4 * 1024)
-#define HVLPMINMEGSPRIMARY 256
-#define HVLPMINMEGSSECONDARY 64
-#define HVCHUNKSPERMEG 4
-#define HVPAGESPERMEG 256
-#define HVPAGESPERCHUNK 64
-
-#define HvLpIndexInvalid ((HvLpIndex)0xff)
-
-/*
- * Enums for the sub-components under PLIC
- * Used in HvCall and HvPrimaryCall
- */
-enum {
- HvCallCompId = 0,
- HvCallCpuCtlsCompId = 1,
- HvCallCfgCompId = 2,
- HvCallEventCompId = 3,
- HvCallHptCompId = 4,
- HvCallPciCompId = 5,
- HvCallSlmCompId = 6,
- HvCallSmCompId = 7,
- HvCallSpdCompId = 8,
- HvCallXmCompId = 9,
- HvCallRioCompId = 10,
- HvCallRsvd3CompId = 11,
- HvCallRsvd2CompId = 12,
- HvCallRsvd1CompId = 13,
- HvCallMaxCompId = 14,
- HvPrimaryCallCompId = 0,
- HvPrimaryCallCfgCompId = 1,
- HvPrimaryCallPciCompId = 2,
- HvPrimaryCallSmCompId = 3,
- HvPrimaryCallSpdCompId = 4,
- HvPrimaryCallXmCompId = 5,
- HvPrimaryCallRioCompId = 6,
- HvPrimaryCallRsvd7CompId = 7,
- HvPrimaryCallRsvd6CompId = 8,
- HvPrimaryCallRsvd5CompId = 9,
- HvPrimaryCallRsvd4CompId = 10,
- HvPrimaryCallRsvd3CompId = 11,
- HvPrimaryCallRsvd2CompId = 12,
- HvPrimaryCallRsvd1CompId = 13,
- HvPrimaryCallMaxCompId = HvCallMaxCompId
-};
-
-struct HvLpBufferList {
- u64 addr;
- u64 len;
-};
-
-#endif /* _ASM_POWERPC_ISERIES_HV_TYPES_H */
diff --git a/arch/powerpc/include/asm/iseries/it_lp_queue.h b/arch/powerpc/include/asm/iseries/it_lp_queue.h
deleted file mode 100644
index 4282788..0000000
--- a/arch/powerpc/include/asm/iseries/it_lp_queue.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_IT_LP_QUEUE_H
-#define _ASM_POWERPC_ISERIES_IT_LP_QUEUE_H
-
-/*
- * This control block defines the simple LP queue structure that is
- * shared between the hypervisor (PLIC) and the OS in order to send
- * events to an LP.
- */
-
-#include <asm/types.h>
-#include <asm/ptrace.h>
-
-#define IT_LP_MAX_QUEUES 8
-
-#define IT_LP_NOT_USED 0 /* Queue will not be used by PLIC */
-#define IT_LP_DEDICATED_IO 1 /* Queue dedicated to IO processor specified */
-#define IT_LP_DEDICATED_LP 2 /* Queue dedicated to LP specified */
-#define IT_LP_SHARED 3 /* Queue shared for both IO and LP */
-
-#define IT_LP_EVENT_STACK_SIZE 4096
-#define IT_LP_EVENT_MAX_SIZE 256
-#define IT_LP_EVENT_ALIGN 64
-
-struct hvlpevent_queue {
-/*
- * The hq_current_event is the pointer to the next event stack entry
- * that will become valid. The OS must peek at this entry to determine
- * if it is valid. PLIC will set the valid indicator as the very last
- * store into that entry.
- *
- * When the OS has completed processing of the event then it will mark
- * the event as invalid so that PLIC knows it can store into that event
- * location again.
- *
- * If the event stack fills and there are overflow events, then PLIC
- * will set the hq_overflow_pending flag in which case the OS will
- * have to fetch the additional LP events once they have drained the
- * event stack.
- *
- * The first 16-bytes are known by both the OS and PLIC. The remainder
- * of the cache line is for use by the OS.
- */
- u8 hq_overflow_pending; /* 0x00 Overflow events are pending */
- u8 hq_status; /* 0x01 DedicatedIo or DedicatedLp or NotUsed */
- u16 hq_proc_index; /* 0x02 Logical Proc Index for correlation */
- u8 hq_reserved1[12]; /* 0x04 */
- char *hq_current_event; /* 0x10 */
- char *hq_last_event; /* 0x18 */
- char *hq_event_stack; /* 0x20 */
- u8 hq_index; /* 0x28 unique sequential index. */
- u8 hq_reserved2[3]; /* 0x29-2b */
- spinlock_t hq_lock;
-};
-
-extern struct hvlpevent_queue hvlpevent_queue;
-
-extern int hvlpevent_is_pending(void);
-extern void process_hvlpevents(void);
-extern void setup_hvlpevent_queue(void);
-
-#endif /* _ASM_POWERPC_ISERIES_IT_LP_QUEUE_H */
diff --git a/arch/powerpc/include/asm/iseries/lpar_map.h b/arch/powerpc/include/asm/iseries/lpar_map.h
deleted file mode 100644
index 5e9f3e1..0000000
--- a/arch/powerpc/include/asm/iseries/lpar_map.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2001 Mike Corrigan IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_LPAR_MAP_H
-#define _ASM_POWERPC_ISERIES_LPAR_MAP_H
-
-#ifndef __ASSEMBLY__
-
-#include <asm/types.h>
-
-#endif
-
-/*
- * The iSeries hypervisor will set up mapping for one or more
- * ESID/VSID pairs (in SLB/segment registers) and will set up
- * mappings of one or more ranges of pages to VAs.
- * We will have the hypervisor set up the ESID->VSID mapping
- * for the four kernel segments (C-F). With shared processors,
- * the hypervisor will clear all segment registers and reload
- * these four whenever the processor is switched from one
- * partition to another.
- */
-
-/* The Vsid and Esid identified below will be used by the hypervisor
- * to set up a memory mapping for part of the load area before giving
- * control to the Linux kernel. The load area is 64 MB, but this must
- * not attempt to map the whole load area. The Hashed Page Table may
- * need to be located within the load area (if the total partition size
- * is 64 MB), but cannot be mapped. Typically, this should specify
- * to map half (32 MB) of the load area.
- *
- * The hypervisor will set up page table entries for the number of
- * pages specified.
- *
- * In 32-bit mode, the hypervisor will load all four of the
- * segment registers (identified by the low-order four bits of the
- * Esid field. In 64-bit mode, the hypervisor will load one SLB
- * entry to map the Esid to the Vsid.
-*/
-
-#define HvEsidsToMap 2
-#define HvRangesToMap 1
-
-/* Hypervisor initially maps 32MB of the load area */
-#define HvPagesToMap 8192
-
-#ifndef __ASSEMBLY__
-struct LparMap {
- u64 xNumberEsids; // Number of ESID/VSID pairs
- u64 xNumberRanges; // Number of VA ranges to map
- u64 xSegmentTableOffs; // Page number within load area of seg table
- u64 xRsvd[5];
- struct {
- u64 xKernelEsid; // Esid used to map kernel load
- u64 xKernelVsid; // Vsid used to map kernel load
- } xEsids[HvEsidsToMap];
- struct {
- u64 xPages; // Number of pages to be mapped
- u64 xOffset; // Offset from start of load area
- u64 xVPN; // Virtual Page Number
- } xRanges[HvRangesToMap];
-};
-
-extern const struct LparMap xLparMap;
-
-#endif /* __ASSEMBLY__ */
-
-/* the fixed address where the LparMap exists */
-#define LPARMAP_PHYS 0x7000
-
-#endif /* _ASM_POWERPC_ISERIES_LPAR_MAP_H */
diff --git a/arch/powerpc/include/asm/iseries/mf.h b/arch/powerpc/include/asm/iseries/mf.h
deleted file mode 100644
index eb851a9..0000000
--- a/arch/powerpc/include/asm/iseries/mf.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2001 Troy D. Armstrong IBM Corporation
- * Copyright (C) 2004 Stephen Rothwell IBM Corporation
- *
- * This modules exists as an interface between a Linux secondary partition
- * running on an iSeries and the primary partition's Virtual Service
- * Processor (VSP) object. The VSP has final authority over powering on/off
- * all partitions in the iSeries. It also provides miscellaneous low-level
- * machine facility type operations.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#ifndef _ASM_POWERPC_ISERIES_MF_H
-#define _ASM_POWERPC_ISERIES_MF_H
-
-#include <linux/types.h>
-
-#include <asm/iseries/hv_types.h>
-#include <asm/iseries/hv_call_event.h>
-
-struct rtc_time;
-
-typedef void (*MFCompleteHandler)(void *clientToken, int returnCode);
-
-extern void mf_allocate_lp_events(HvLpIndex targetLp, HvLpEvent_Type type,
- unsigned size, unsigned amount, MFCompleteHandler hdlr,
- void *userToken);
-extern void mf_deallocate_lp_events(HvLpIndex targetLp, HvLpEvent_Type type,
- unsigned count, MFCompleteHandler hdlr, void *userToken);
-
-extern void mf_power_off(void);
-extern void mf_reboot(char *cmd);
-
-extern void mf_display_src(u32 word);
-extern void mf_display_progress(u16 value);
-
-extern void mf_init(void);
-
-#endif /* _ASM_POWERPC_ISERIES_MF_H */
--
1.7.9.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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^ permalink raw reply related
* linux-next: manual merge of the char-misc tree with the powerpc tree
From: Stephen Rothwell @ 2012-03-16 5:52 UTC (permalink / raw)
To: Greg KH, Arnd Bergmann
Cc: linux-kernel, Masanari Iida, linux-next, Paul Mackerras,
linuxppc-dev
[-- Attachment #1: Type: text/plain, Size: 426 bytes --]
Hi all,
Today's linux-next merge of the char-misc tree got a conflict in
drivers/char/viotape.c between commit ba7a4822b48f ("powerpc: Remove some
of the legacy iSeries specific device drivers") from the powerpc tree and
commit 5fb15db4376f ("char: Fix typo in viotape.c") from the char-misc
tree.
The former removed this file, so I did that.
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply
* [PATCH v4 1/4] powerpc/85xx: add HOTPLUG_CPU support
From: Zhao Chenhui @ 2012-03-16 9:22 UTC (permalink / raw)
To: linuxppc-dev; +Cc: linux-kernel
From: Li Yang <leoli@freescale.com>
Add support to disable and re-enable individual cores at runtime
on MPC85xx/QorIQ SMP machines. Currently support e500v1/e500v2 core.
MPC85xx machines use ePAPR spin-table in boot page for CPU kick-off.
This patch uses the boot page from bootloader to boot core at runtime.
It supports 32-bit and 36-bit physical address.
Add generic_set_cpu_up() to set cpu_state as CPU_UP_PREPARE in kick_cpu().
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
---
Changes for v4:
* used spin_event_timeout()
* fixed build problem with corenet32_smp_defconfig
* code cleanup
arch/powerpc/Kconfig | 6 +-
arch/powerpc/include/asm/cacheflush.h | 6 ++
arch/powerpc/include/asm/smp.h | 2 +
arch/powerpc/kernel/head_fsl_booke.S | 28 ++++++
arch/powerpc/kernel/smp.c | 10 ++
arch/powerpc/platforms/85xx/smp.c | 146 ++++++++++++++++++++++++---------
6 files changed, 157 insertions(+), 41 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 4eecaaa..3d4c497 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -219,7 +219,8 @@ config ARCH_HIBERNATION_POSSIBLE
config ARCH_SUSPEND_POSSIBLE
def_bool y
depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
- (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
+ (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
+ || 44x || 40x
config PPC_DCR_NATIVE
bool
@@ -330,7 +331,8 @@ config SWIOTLB
config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
- depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
+ depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
+ PPC_PMAC || PPC_POWERNV || PPC_85xx)
---help---
Say Y here to be able to disable and re-enable individual
CPUs at runtime on SMP machines.
diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h
index ab9e402..57b5dd7 100644
--- a/arch/powerpc/include/asm/cacheflush.h
+++ b/arch/powerpc/include/asm/cacheflush.h
@@ -30,6 +30,12 @@ extern void flush_dcache_page(struct page *page);
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
+#ifdef CONFIG_FSL_BOOKE
+extern void flush_disable_L1(void);
+#else
+#define flush_disable_L1() do { } while (0)
+#endif
+
extern void __flush_icache_range(unsigned long, unsigned long);
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index adba970..7517863 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h
@@ -65,6 +65,7 @@ int generic_cpu_disable(void);
void generic_cpu_die(unsigned int cpu);
void generic_mach_cpu_die(void);
void generic_set_cpu_dead(unsigned int cpu);
+void generic_set_cpu_up(unsigned int cpu);
int generic_check_cpu_restart(unsigned int cpu);
#endif
@@ -191,6 +192,7 @@ extern unsigned long __secondary_hold_spinloop;
extern unsigned long __secondary_hold_acknowledge;
extern char __secondary_hold;
+extern void __early_start(void);
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 28e6259..e654f97 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -1004,6 +1004,34 @@ _GLOBAL(flush_dcache_L1)
blr
+/* Flush L1 d-cache, invalidate and disable d-cache and i-cache */
+_GLOBAL(flush_disable_L1)
+ mflr r10
+ bl flush_dcache_L1 /* Flush L1 d-cache */
+ mtlr r10
+
+ mfspr r4, SPRN_L1CSR0 /* Invalidate and disable d-cache */
+ li r5, 2
+ rlwimi r4, r5, 0, 3
+
+ msync
+ isync
+ mtspr SPRN_L1CSR0, r4
+ isync
+
+1: mfspr r4, SPRN_L1CSR0 /* Wait for the invalidate to finish */
+ andi. r4, r4, 2
+ bne 1b
+
+ mfspr r4, SPRN_L1CSR1 /* Invalidate and disable i-cache */
+ li r5, 2
+ rlwimi r4, r5, 0, 3
+
+ mtspr SPRN_L1CSR1, r4
+ isync
+
+ blr
+
#ifdef CONFIG_SMP
/* When we get here, r24 needs to hold the CPU # */
.globl __secondary_start
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 46695fe..cc18a70 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -423,6 +423,16 @@ void generic_set_cpu_dead(unsigned int cpu)
per_cpu(cpu_state, cpu) = CPU_DEAD;
}
+/*
+ * The cpu_state should be set to CPU_UP_PREPARE in kick_cpu(), otherwise
+ * the cpu_state is always CPU_DEAD after calling generic_set_cpu_dead(),
+ * which makes the delay in generic_cpu_die() not happen.
+ */
+void generic_set_cpu_up(unsigned int cpu)
+{
+ per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
+}
+
int generic_check_cpu_restart(unsigned int cpu)
{
return per_cpu(cpu_state, cpu) == CPU_UP_PREPARE;
diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c
index ff42490..f24b2b4 100644
--- a/arch/powerpc/platforms/85xx/smp.c
+++ b/arch/powerpc/platforms/85xx/smp.c
@@ -2,7 +2,7 @@
* Author: Andy Fleming <afleming@freescale.com>
* Kumar Gala <galak@kernel.crashing.org>
*
- * Copyright 2006-2008, 2011 Freescale Semiconductor Inc.
+ * Copyright 2006-2008, 2011-2012 Freescale Semiconductor Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/kexec.h>
#include <linux/highmem.h>
+#include <linux/cpu.h>
#include <asm/machdep.h>
#include <asm/pgtable.h>
@@ -29,28 +30,59 @@
#include <sysdev/mpic.h>
#include "smp.h"
-extern void __early_start(void);
-
-#define BOOT_ENTRY_ADDR_UPPER 0
-#define BOOT_ENTRY_ADDR_LOWER 1
-#define BOOT_ENTRY_R3_UPPER 2
-#define BOOT_ENTRY_R3_LOWER 3
-#define BOOT_ENTRY_RESV 4
-#define BOOT_ENTRY_PIR 5
-#define BOOT_ENTRY_R6_UPPER 6
-#define BOOT_ENTRY_R6_LOWER 7
-#define NUM_BOOT_ENTRY 8
-#define SIZE_BOOT_ENTRY (NUM_BOOT_ENTRY * sizeof(u32))
-
-static int __init
-smp_85xx_kick_cpu(int nr)
+struct epapr_spin_table {
+ u32 addr_h;
+ u32 addr_l;
+ u32 r3_h;
+ u32 r3_l;
+ u32 reserved;
+ u32 pir;
+};
+
+static void __cpuinit smp_85xx_setup_cpu(int cpu_nr);
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void __cpuinit smp_85xx_mach_cpu_die(void)
+{
+ unsigned int cpu = smp_processor_id();
+ u32 tmp;
+
+ local_irq_disable();
+ idle_task_exit();
+ generic_set_cpu_dead(cpu);
+ mb();
+
+ mtspr(SPRN_TCR, 0);
+
+ flush_disable_L1();
+ tmp = (mfspr(SPRN_HID0) & ~(HID0_DOZE|HID0_SLEEP)) | HID0_NAP;
+ mb();
+ isync();
+ mtspr(SPRN_HID0, tmp);
+ isync();
+
+ /* Enter NAP mode. */
+ tmp = mfmsr();
+ tmp |= MSR_WE;
+ mb();
+ mtmsr(tmp);
+ isync();
+
+ while (1)
+ ;
+}
+#endif
+
+static int __cpuinit smp_85xx_kick_cpu(int nr)
+
{
unsigned long flags;
const u64 *cpu_rel_addr;
- __iomem u32 *bptr_vaddr;
+ __iomem struct epapr_spin_table *spin_table;
struct device_node *np;
- int n = 0, hw_cpu = get_hard_smp_processor_id(nr);
+ int hw_cpu = get_hard_smp_processor_id(nr);
int ioremappable;
+ int ret = 0;
WARN_ON(nr < 0 || nr >= NR_CPUS);
WARN_ON(hw_cpu < 0 || hw_cpu >= NR_CPUS);
@@ -75,50 +107,83 @@ smp_85xx_kick_cpu(int nr)
/* Map the spin table */
if (ioremappable)
- bptr_vaddr = ioremap(*cpu_rel_addr, SIZE_BOOT_ENTRY);
+ spin_table = ioremap(*cpu_rel_addr,
+ sizeof(struct epapr_spin_table));
else
- bptr_vaddr = phys_to_virt(*cpu_rel_addr);
+ spin_table = phys_to_virt(*cpu_rel_addr);
local_irq_save(flags);
-
- out_be32(bptr_vaddr + BOOT_ENTRY_PIR, hw_cpu);
#ifdef CONFIG_PPC32
- out_be32(bptr_vaddr + BOOT_ENTRY_ADDR_LOWER, __pa(__early_start));
+#ifdef CONFIG_HOTPLUG_CPU
+ /* Corresponding to generic_set_cpu_dead() */
+ generic_set_cpu_up(nr);
+
+ if (system_state == SYSTEM_RUNNING) {
+ out_be32(&spin_table->addr_l, 0);
+
+ /*
+ * We don't set the BPTR register here upon it points
+ * to the boot page properly.
+ */
+ mpic_reset_core(hw_cpu);
+
+ /* wait until core is ready... */
+ if (!spin_event_timeout(in_be32(&spin_table->addr_l) == 1,
+ 10000, 100)) {
+ pr_err("%s: timeout waiting for core %d to reset\n",
+ __func__, hw_cpu);
+ ret = -ENOENT;
+ goto out;
+ }
+
+ /* clear the acknowledge status */
+ __secondary_hold_acknowledge = -1;
+ }
+#endif
+ out_be32(&spin_table->pir, hw_cpu);
+ out_be32(&spin_table->addr_l, __pa(__early_start));
if (!ioremappable)
- flush_dcache_range((ulong)bptr_vaddr,
- (ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
+ flush_dcache_range((ulong)spin_table,
+ (ulong)spin_table + sizeof(struct epapr_spin_table));
/* Wait a bit for the CPU to ack. */
- while ((__secondary_hold_acknowledge != hw_cpu) && (++n < 1000))
- mdelay(1);
+ if (!spin_event_timeout(__secondary_hold_acknowledge == hw_cpu,
+ 10000, 100)) {
+ pr_err("%s: timeout waiting for core %d to ack\n",
+ __func__, hw_cpu);
+ ret = -ENOENT;
+ goto out;
+ }
+out:
#else
smp_generic_kick_cpu(nr);
- out_be64((u64 *)(bptr_vaddr + BOOT_ENTRY_ADDR_UPPER),
- __pa((u64)*((unsigned long long *) generic_secondary_smp_init)));
+ out_be32(&spin_table->pir, hw_cpu);
+ out_be64((u64 *)(&spin_table->addr_h),
+ __pa((u64)*((unsigned long long *)generic_secondary_smp_init)));
if (!ioremappable)
- flush_dcache_range((ulong)bptr_vaddr,
- (ulong)(bptr_vaddr + SIZE_BOOT_ENTRY));
+ flush_dcache_range((ulong)spin_table,
+ (ulong)spin_table + sizeof(struct epapr_spin_table));
#endif
local_irq_restore(flags);
if (ioremappable)
- iounmap(bptr_vaddr);
+ iounmap(spin_table);
- pr_debug("waited %d msecs for CPU #%d.\n", n, nr);
-
- return 0;
+ return ret;
}
struct smp_ops_t smp_85xx_ops = {
.kick_cpu = smp_85xx_kick_cpu,
-#ifdef CONFIG_KEXEC
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_disable = generic_cpu_disable,
+ .cpu_die = generic_cpu_die,
+#endif
.give_timebase = smp_generic_give_timebase,
.take_timebase = smp_generic_take_timebase,
-#endif
};
#ifdef CONFIG_KEXEC
@@ -218,8 +283,7 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image)
}
#endif /* CONFIG_KEXEC */
-static void __init
-smp_85xx_setup_cpu(int cpu_nr)
+static void __cpuinit smp_85xx_setup_cpu(int cpu_nr)
{
if (smp_85xx_ops.probe == smp_mpic_probe)
mpic_setup_this_cpu();
@@ -249,6 +313,10 @@ void __init mpc85xx_smp_init(void)
smp_85xx_ops.cause_ipi = doorbell_cause_ipi;
}
+#ifdef CONFIG_HOTPLUG_CPU
+ ppc_md.cpu_die = smp_85xx_mach_cpu_die;
+#endif
+
smp_ops = &smp_85xx_ops;
#ifdef CONFIG_KEXEC
--
1.6.4.1
^ permalink raw reply related
* [PATCH v4 2/4] powerpc/85xx: add sleep and deep sleep support
From: Zhao Chenhui @ 2012-03-16 9:26 UTC (permalink / raw)
To: linuxppc-dev; +Cc: linux-kernel
From: Li Yang <leoli@freescale.com>
In sleep PM mode, the clocks of e500 core and unused IP blocks is
turned off. IP blocks which are allowed to wake up the processor
are still running.
Some Freescale chips like MPC8536 and P1022 has deep sleep PM mode
in addtion to the sleep PM mode.
While in deep sleep PM mode, additionally, the power supply is
removed from e500 core and most IP blocks. Only the blocks needed
to wake up the chip out of deep sleep are ON.
This patch supports 32-bit and 36-bit address space.
The sleep mode is equal to the Standby state in Linux. The deep sleep
mode is equal to the Suspend-to-RAM state of Linux Power Management.
Command to enter sleep mode.
echo standby > /sys/power/state
Command to enter deep sleep mode.
echo mem > /sys/power/state
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/cacheflush.h | 2 +
arch/powerpc/kernel/Makefile | 3 +
arch/powerpc/kernel/l2cache_85xx.S | 53 +++
arch/powerpc/platforms/85xx/Makefile | 3 +
arch/powerpc/platforms/85xx/sleep.S | 609 +++++++++++++++++++++++++++++++++
arch/powerpc/sysdev/fsl_pmc.c | 90 ++++-
arch/powerpc/sysdev/fsl_soc.h | 5 +
8 files changed, 748 insertions(+), 19 deletions(-)
create mode 100644 arch/powerpc/kernel/l2cache_85xx.S
create mode 100644 arch/powerpc/platforms/85xx/sleep.S
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3d4c497..6f88c59 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -672,7 +672,7 @@ config FSL_PCI
config FSL_PMC
bool
default y
- depends on SUSPEND && (PPC_85xx || PPC_86xx)
+ depends on SUSPEND && (PPC_85xx || PPC_86xx) && !PPC_E500MC
help
Freescale MPC85xx/MPC86xx power management controller support
(suspend/resume). For MPC83xx see platforms/83xx/suspend.c
diff --git a/arch/powerpc/include/asm/cacheflush.h b/arch/powerpc/include/asm/cacheflush.h
index 57b5dd7..1031786 100644
--- a/arch/powerpc/include/asm/cacheflush.h
+++ b/arch/powerpc/include/asm/cacheflush.h
@@ -32,8 +32,10 @@ extern void flush_dcache_page(struct page *page);
#ifdef CONFIG_FSL_BOOKE
extern void flush_disable_L1(void);
+extern void flush_dcache_L1(void);
#else
#define flush_disable_L1() do { } while (0)
+#define flush_dcache_L1() do { } while (0)
#endif
extern void __flush_icache_range(unsigned long, unsigned long);
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index f5808a3..cb70dba 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -64,6 +64,9 @@ obj-$(CONFIG_FA_DUMP) += fadump.o
ifeq ($(CONFIG_PPC32),y)
obj-$(CONFIG_E500) += idle_e500.o
endif
+ifneq ($(CONFIG_PPC_E500MC),y)
+obj-$(CONFIG_PPC_85xx) += l2cache_85xx.o
+endif
obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o
obj-$(CONFIG_TAU) += tau_6xx.o
obj-$(CONFIG_HIBERNATION) += swsusp.o suspend.o
diff --git a/arch/powerpc/kernel/l2cache_85xx.S b/arch/powerpc/kernel/l2cache_85xx.S
new file mode 100644
index 0000000..b0b7d1c
--- /dev/null
+++ b/arch/powerpc/kernel/l2cache_85xx.S
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2009-2012 Freescale Semiconductor, Inc. All rights reserved.
+ * Scott Wood <scottwood@freescale.com>
+ * Dave Liu <daveliu@freescale.com>
+ * implement the L2 cache operations of e500 based L2 controller
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <asm/reg.h>
+#include <asm/cputable.h>
+#include <asm/ppc_asm.h>
+#include <asm/asm-offsets.h>
+
+ .section .text
+
+ /* r3 = virtual address of L2 controller, WIMG = 01xx */
+_GLOBAL(flush_disable_L2)
+ /* It's a write-through cache, so only invalidation is needed. */
+ mbar
+ isync
+ lwz r4, 0(r3)
+ li r5, 1
+ rlwimi r4, r5, 30, 0xc0000000
+ stw r4, 0(r3)
+
+ /* Wait for the invalidate to finish */
+1: lwz r4, 0(r3)
+ andis. r4, r4, 0x4000
+ bne 1b
+ mbar
+
+ blr
+
+ /* r3 = virtual address of L2 controller, WIMG = 01xx */
+_GLOBAL(invalidate_enable_L2)
+ mbar
+ isync
+ lwz r4, 0(r3)
+ li r5, 3
+ rlwimi r4, r5, 30, 0xc0000000
+ stw r4, 0(r3)
+
+ /* Wait for the invalidate to finish */
+1: lwz r4, 0(r3)
+ andis. r4, r4, 0x4000
+ bne 1b
+ mbar
+
+ blr
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 9cb2d43..f9fcbf4 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -2,6 +2,9 @@
# Makefile for the PowerPC 85xx linux kernel.
#
obj-$(CONFIG_SMP) += smp.o
+ifneq ($(CONFIG_PPC_E500MC),y)
+obj-$(CONFIG_SUSPEND) += sleep.o
+endif
obj-y += common.o
diff --git a/arch/powerpc/platforms/85xx/sleep.S b/arch/powerpc/platforms/85xx/sleep.S
new file mode 100644
index 0000000..29a4f17
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/sleep.S
@@ -0,0 +1,609 @@
+/*
+ * Enter and leave deep sleep/sleep state on MPC85xx
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (C) 2006-2012 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <asm/page.h>
+#include <asm/ppc_asm.h>
+#include <asm/reg.h>
+#include <asm/asm-offsets.h>
+
+#define SS_TB 0x00
+#define SS_HID 0x08 /* 2 HIDs */
+#define SS_IAC 0x10 /* 2 IACs */
+#define SS_DAC 0x18 /* 2 DACs */
+#define SS_DBCR 0x20 /* 3 DBCRs */
+#define SS_PID 0x2c /* 3 PIDs */
+#define SS_SPRG 0x38 /* 8 SPRGs */
+#define SS_IVOR 0x58 /* 20 interrupt vectors */
+#define SS_TCR 0xa8
+#define SS_BUCSR 0xac
+#define SS_L1CSR 0xb0 /* 2 L1CSRs */
+#define SS_MSR 0xb8
+#define SS_USPRG 0xbc
+#define SS_GPREG 0xc0 /* r12-r31 */
+#define SS_LR 0x110
+#define SS_CR 0x114
+#define SS_SP 0x118
+#define SS_CURRENT 0x11c
+#define SS_IVPR 0x120
+#define SS_BPTR 0x124
+
+
+#define STATE_SAVE_SIZE 0x128
+
+ .section .data
+ .align 5
+mpc85xx_sleep_save_area:
+ .space STATE_SAVE_SIZE
+ccsrbase_low:
+ .long 0
+ccsrbase_high:
+ .long 0
+powmgtreq:
+ .long 0
+
+ .section .text
+ .align 12
+
+ /*
+ * r3 = high word of physical address of CCSR
+ * r4 = low word of physical address of CCSR
+ * r5 = JOG or deep sleep request
+ * JOG-0x00200000, deep sleep-0x00100000
+ */
+_GLOBAL(mpc85xx_enter_deep_sleep)
+ lis r6, ccsrbase_low@ha
+ stw r4, ccsrbase_low@l(r6)
+ lis r6, ccsrbase_high@ha
+ stw r3, ccsrbase_high@l(r6)
+
+ lis r6, powmgtreq@ha
+ stw r5, powmgtreq@l(r6)
+
+ lis r10, mpc85xx_sleep_save_area@h
+ ori r10, r10, mpc85xx_sleep_save_area@l
+
+ mfspr r5, SPRN_HID0
+ mfspr r6, SPRN_HID1
+
+ stw r5, SS_HID+0(r10)
+ stw r6, SS_HID+4(r10)
+
+ mfspr r4, SPRN_IAC1
+ mfspr r5, SPRN_IAC2
+ mfspr r6, SPRN_DAC1
+ mfspr r7, SPRN_DAC2
+
+ stw r4, SS_IAC+0(r10)
+ stw r5, SS_IAC+4(r10)
+ stw r6, SS_DAC+0(r10)
+ stw r7, SS_DAC+4(r10)
+
+ mfspr r4, SPRN_DBCR0
+ mfspr r5, SPRN_DBCR1
+ mfspr r6, SPRN_DBCR2
+
+ stw r4, SS_DBCR+0(r10)
+ stw r5, SS_DBCR+4(r10)
+ stw r6, SS_DBCR+8(r10)
+
+ mfspr r4, SPRN_PID0
+ mfspr r5, SPRN_PID1
+ mfspr r6, SPRN_PID2
+
+ stw r4, SS_PID+0(r10)
+ stw r5, SS_PID+4(r10)
+ stw r6, SS_PID+8(r10)
+
+ mfspr r4, SPRN_SPRG0
+ mfspr r5, SPRN_SPRG1
+ mfspr r6, SPRN_SPRG2
+ mfspr r7, SPRN_SPRG3
+
+ stw r4, SS_SPRG+0x00(r10)
+ stw r5, SS_SPRG+0x04(r10)
+ stw r6, SS_SPRG+0x08(r10)
+ stw r7, SS_SPRG+0x0c(r10)
+
+ mfspr r4, SPRN_SPRG4
+ mfspr r5, SPRN_SPRG5
+ mfspr r6, SPRN_SPRG6
+ mfspr r7, SPRN_SPRG7
+
+ stw r4, SS_SPRG+0x10(r10)
+ stw r5, SS_SPRG+0x14(r10)
+ stw r6, SS_SPRG+0x18(r10)
+ stw r7, SS_SPRG+0x1c(r10)
+
+ mfspr r4, SPRN_IVPR
+ stw r4, SS_IVPR(r10)
+
+ mfspr r4, SPRN_IVOR0
+ mfspr r5, SPRN_IVOR1
+ mfspr r6, SPRN_IVOR2
+ mfspr r7, SPRN_IVOR3
+
+ stw r4, SS_IVOR+0x00(r10)
+ stw r5, SS_IVOR+0x04(r10)
+ stw r6, SS_IVOR+0x08(r10)
+ stw r7, SS_IVOR+0x0c(r10)
+
+ mfspr r4, SPRN_IVOR4
+ mfspr r5, SPRN_IVOR5
+ mfspr r6, SPRN_IVOR6
+ mfspr r7, SPRN_IVOR7
+
+ stw r4, SS_IVOR+0x10(r10)
+ stw r5, SS_IVOR+0x14(r10)
+ stw r6, SS_IVOR+0x18(r10)
+ stw r7, SS_IVOR+0x1c(r10)
+
+ mfspr r4, SPRN_IVOR8
+ mfspr r5, SPRN_IVOR9
+ mfspr r6, SPRN_IVOR10
+ mfspr r7, SPRN_IVOR11
+
+ stw r4, SS_IVOR+0x20(r10)
+ stw r5, SS_IVOR+0x24(r10)
+ stw r6, SS_IVOR+0x28(r10)
+ stw r7, SS_IVOR+0x2c(r10)
+
+ mfspr r4, SPRN_IVOR12
+ mfspr r5, SPRN_IVOR13
+ mfspr r6, SPRN_IVOR14
+ mfspr r7, SPRN_IVOR15
+
+ stw r4, SS_IVOR+0x30(r10)
+ stw r5, SS_IVOR+0x34(r10)
+ stw r6, SS_IVOR+0x38(r10)
+ stw r7, SS_IVOR+0x3c(r10)
+
+ mfspr r4, SPRN_IVOR32
+ mfspr r5, SPRN_IVOR33
+ mfspr r6, SPRN_IVOR34
+ mfspr r7, SPRN_IVOR35
+
+ stw r4, SS_IVOR+0x40(r10)
+ stw r5, SS_IVOR+0x44(r10)
+ stw r6, SS_IVOR+0x48(r10)
+ stw r7, SS_IVOR+0x4c(r10)
+
+ mfspr r4, SPRN_TCR
+ mfspr r5, SPRN_BUCSR
+ mfspr r6, SPRN_L1CSR0
+ mfspr r7, SPRN_L1CSR1
+ mfspr r8, SPRN_USPRG0
+
+ stw r4, SS_TCR(r10)
+ stw r5, SS_BUCSR(r10)
+ stw r6, SS_L1CSR+0(r10)
+ stw r7, SS_L1CSR+4(r10)
+ stw r8, SS_USPRG+0(r10)
+
+ stmw r12, SS_GPREG(r10)
+
+ mfmsr r4
+ mflr r5
+ mfcr r6
+
+ stw r4, SS_MSR(r10)
+ stw r5, SS_LR(r10)
+ stw r6, SS_CR(r10)
+ stw r1, SS_SP(r10)
+ stw r2, SS_CURRENT(r10)
+
+1: mftbu r4
+ mftb r5
+ mftbu r6
+ cmpw r4, r6
+ bne 1b
+
+ stw r4, SS_TB+0(r10)
+ stw r5, SS_TB+4(r10)
+
+ lis r5, ccsrbase_low@ha
+ lwz r4, ccsrbase_low@l(r5)
+ lis r5, ccsrbase_high@ha
+ lwz r3, ccsrbase_high@l(r5)
+
+ /* Disable machine checks and critical exceptions */
+ mfmsr r5
+ rlwinm r5, r5, 0, ~MSR_CE
+ rlwinm r5, r5, 0, ~MSR_ME
+ mtmsr r5
+ isync
+
+ /* Use TLB1[15] to map the CCSR at 0xf0000000 */
+ lis r5, 0x100f
+ mtspr SPRN_MAS0, r5
+ lis r5, 0xc000
+ ori r5, r5, 0x0500
+ mtspr SPRN_MAS1, r5
+ lis r5, 0xf000
+ ori r5, r5, 0x000a
+ mtspr SPRN_MAS2, r5
+ rlwinm r5, r4, 0, 0xfffff000
+ ori r5, r5, 0x0005
+ mtspr SPRN_MAS3, r5
+ mtspr SPRN_MAS7, r3
+ isync
+ tlbwe
+ isync
+
+ lis r3, 0xf000
+ lwz r4, 0x20(r3)
+ stw r4, SS_BPTR(r10)
+
+ lis r3, 0xf002 /* L2 cache controller at CCSR+0x20000 */
+ bl flush_disable_L2
+ bl flush_disable_L1
+
+ /* Enable I-cache, so as not to upset the bus
+ * with our loop.
+ */
+
+ mfspr r4, SPRN_L1CSR1
+ ori r4, r4, 1
+ mtspr SPRN_L1CSR1, r4
+ isync
+
+ /* Set boot page translation */
+ lis r3, 0xf000
+ lis r4, (mpc85xx_deep_resume - PAGE_OFFSET)@h
+ ori r4, r4, (mpc85xx_deep_resume - PAGE_OFFSET)@l
+ rlwinm r4, r4, 20, 0x000fffff
+ oris r4, r4, 0x8000
+ stw r4, 0x20(r3)
+ lwz r4, 0x20(r3) /* read-back to flush write */
+ twi 0, r4, 0
+ isync
+
+ /* Disable the decrementer */
+ mfspr r4, SPRN_TCR
+ rlwinm r4, r4, 0, ~TCR_DIE
+ mtspr SPRN_TCR, r4
+
+ mfspr r4, SPRN_TSR
+ oris r4, r4, TSR_DIS@h
+ mtspr SPRN_TSR, r4
+
+ /* set PMRCCR[VRCNT] to wait power stable for 40ms */
+ lis r3, 0xf00e
+ lwz r4, 0x84(r3)
+ clrlwi r4, r4, 16
+ oris r4, r4, 0x12a3
+ stw r4, 0x84(r3)
+ lwz r4, 0x84(r3)
+
+ /* set deep sleep bit in POWMGTSCR */
+ lis r3, powmgtreq@ha
+ lwz r8, powmgtreq@l(r3)
+
+ lis r3, 0xf00e
+ lwz r4, 0x80(r3)
+ or r4, r4, r8
+ stw r4, 0x80(r3)
+ lwz r4, 0x80(r3) /* read-back to flush write */
+ twi 0, r4, 0
+ isync
+
+ mftb r5
+1: /* spin until either we enter deep sleep, or the sleep process is
+ * aborted due to a pending wakeup event. Wait some time between
+ * accesses, so we don't flood the bus and prevent the pmc from
+ * detecting an idle system.
+ */
+
+ mftb r4
+ subf r7, r5, r4
+ cmpwi r7, 1000
+ blt 1b
+ mr r5, r4
+
+ lwz r6, 0x80(r3)
+ andis. r6, r6, 0x0010
+ bne 1b
+ b 2f
+
+2: mfspr r4, SPRN_PIR
+ andi. r4, r4, 1
+99: bne 99b
+
+ /* Establish a temporary 64MB 0->0 mapping in TLB1[1]. */
+ lis r4, 0x1001
+ mtspr SPRN_MAS0, r4
+ lis r4, 0xc000
+ ori r4, r4, 0x0800
+ mtspr SPRN_MAS1, r4
+ li r4, 0
+ mtspr SPRN_MAS2, r4
+ li r4, 0x0015
+ mtspr SPRN_MAS3, r4
+ li r4, 0
+ mtspr SPRN_MAS7, r4
+ isync
+ tlbwe
+ isync
+
+ lis r3, (3f - PAGE_OFFSET)@h
+ ori r3, r3, (3f - PAGE_OFFSET)@l
+ mtctr r3
+ bctr
+
+ /* Locate the resume vector in the last word of the current page. */
+ . = mpc85xx_enter_deep_sleep + 0xffc
+mpc85xx_deep_resume:
+ b 2b
+
+3:
+ /* Restore the contents of TLB1[0]. It is assumed that it covers
+ * the currently executing code and the sleep save area, and that
+ * it does not alias our temporary mapping (which is at virtual zero).
+ */
+ lis r3, (TLBCAM - PAGE_OFFSET)@h
+ ori r3, r3, (TLBCAM - PAGE_OFFSET)@l
+
+ lwz r4, 0(r3)
+ lwz r5, 4(r3)
+ lwz r6, 8(r3)
+ lwz r7, 12(r3)
+ lwz r8, 16(r3)
+
+ mtspr SPRN_MAS0, r4
+ mtspr SPRN_MAS1, r5
+ mtspr SPRN_MAS2, r6
+ mtspr SPRN_MAS3, r7
+ mtspr SPRN_MAS7, r8
+
+ isync
+ tlbwe
+ isync
+
+ /* Access the ccsrbase address with TLB1[0] */
+ lis r5, ccsrbase_low@ha
+ lwz r4, ccsrbase_low@l(r5)
+ lis r5, ccsrbase_high@ha
+ lwz r3, ccsrbase_high@l(r5)
+
+ /* Use TLB1[15] to map the CCSR at 0xf0000000 */
+ lis r5, 0x100f
+ mtspr SPRN_MAS0, r5
+ lis r5, 0xc000
+ ori r5, r5, 0x0500
+ mtspr SPRN_MAS1, r5
+ lis r5, 0xf000
+ ori r5, r5, 0x000a
+ mtspr SPRN_MAS2, r5
+ rlwinm r5, r4, 0, 0xfffff000
+ ori r5, r5, 0x0005
+ mtspr SPRN_MAS3, r5
+ mtspr SPRN_MAS7, r3
+ isync
+ tlbwe
+ isync
+
+ lis r3, 0xf002 /* L2 cache controller at CCSR+0x20000 */
+ bl invalidate_enable_L2
+
+ /* Access the MEM(r10) with TLB1[0] */
+ lis r10, mpc85xx_sleep_save_area@h
+ ori r10, r10, mpc85xx_sleep_save_area@l
+
+ lis r3, 0xf000
+ lwz r4, SS_BPTR(r10)
+ stw r4, 0x20(r3) /* restore BPTR */
+
+ /* Program shift running space to PAGE_OFFSET */
+ mfmsr r3
+ lis r4, 1f@h
+ ori r4, r4, 1f@l
+
+ mtsrr1 r3
+ mtsrr0 r4
+ rfi
+
+1: /* Restore the rest of TLB1, in ascending order so that
+ * the TLB1[1] gets invalidated first.
+ *
+ * XXX: It's better to invalidate the temporary mapping
+ * TLB1[15] for CCSR before restore any TLB1 entry include 0.
+ */
+ lis r4, 0x100f
+ mtspr SPRN_MAS0, r4
+ lis r4, 0
+ mtspr SPRN_MAS1, r4
+ isync
+ tlbwe
+ isync
+
+ lis r3, (TLBCAM + 5*4 - 4)@h
+ ori r3, r3, (TLBCAM + 5*4 - 4)@l
+ li r4, 15
+ mtctr r4
+
+2:
+ lwz r5, 4(r3)
+ lwz r6, 8(r3)
+ lwz r7, 12(r3)
+ lwz r8, 16(r3)
+ lwzu r9, 20(r3)
+
+ mtspr SPRN_MAS0, r5
+ mtspr SPRN_MAS1, r6
+ mtspr SPRN_MAS2, r7
+ mtspr SPRN_MAS3, r8
+ mtspr SPRN_MAS7, r9
+
+ isync
+ tlbwe
+ isync
+ bdnz 2b
+
+ lis r10, mpc85xx_sleep_save_area@h
+ ori r10, r10, mpc85xx_sleep_save_area@l
+
+ lwz r5, SS_HID+0(r10)
+ lwz r6, SS_HID+4(r10)
+
+ isync
+ mtspr SPRN_HID0, r5
+ isync
+
+ msync
+ mtspr SPRN_HID1, r6
+ isync
+
+ lwz r4, SS_IAC+0(r10)
+ lwz r5, SS_IAC+4(r10)
+ lwz r6, SS_DAC+0(r10)
+ lwz r7, SS_DAC+4(r10)
+
+ mtspr SPRN_IAC1, r4
+ mtspr SPRN_IAC2, r5
+ mtspr SPRN_DAC1, r6
+ mtspr SPRN_DAC2, r7
+
+ lwz r4, SS_DBCR+0(r10)
+ lwz r5, SS_DBCR+4(r10)
+ lwz r6, SS_DBCR+8(r10)
+
+ mtspr SPRN_DBCR0, r4
+ mtspr SPRN_DBCR1, r5
+ mtspr SPRN_DBCR2, r6
+
+ lwz r4, SS_PID+0(r10)
+ lwz r5, SS_PID+4(r10)
+ lwz r6, SS_PID+8(r10)
+
+ mtspr SPRN_PID0, r4
+ mtspr SPRN_PID1, r5
+ mtspr SPRN_PID2, r6
+
+ lwz r4, SS_SPRG+0x00(r10)
+ lwz r5, SS_SPRG+0x04(r10)
+ lwz r6, SS_SPRG+0x08(r10)
+ lwz r7, SS_SPRG+0x0c(r10)
+
+ mtspr SPRN_SPRG0, r4
+ mtspr SPRN_SPRG1, r5
+ mtspr SPRN_SPRG2, r6
+ mtspr SPRN_SPRG3, r7
+
+ lwz r4, SS_SPRG+0x10(r10)
+ lwz r5, SS_SPRG+0x14(r10)
+ lwz r6, SS_SPRG+0x18(r10)
+ lwz r7, SS_SPRG+0x1c(r10)
+
+ mtspr SPRN_SPRG4, r4
+ mtspr SPRN_SPRG5, r5
+ mtspr SPRN_SPRG6, r6
+ mtspr SPRN_SPRG7, r7
+
+ lwz r4, SS_IVPR(r10)
+ mtspr SPRN_IVPR, r4
+
+ lwz r4, SS_IVOR+0x00(r10)
+ lwz r5, SS_IVOR+0x04(r10)
+ lwz r6, SS_IVOR+0x08(r10)
+ lwz r7, SS_IVOR+0x0c(r10)
+
+ mtspr SPRN_IVOR0, r4
+ mtspr SPRN_IVOR1, r5
+ mtspr SPRN_IVOR2, r6
+ mtspr SPRN_IVOR3, r7
+
+ lwz r4, SS_IVOR+0x10(r10)
+ lwz r5, SS_IVOR+0x14(r10)
+ lwz r6, SS_IVOR+0x18(r10)
+ lwz r7, SS_IVOR+0x1c(r10)
+
+ mtspr SPRN_IVOR4, r4
+ mtspr SPRN_IVOR5, r5
+ mtspr SPRN_IVOR6, r6
+ mtspr SPRN_IVOR7, r7
+
+ lwz r4, SS_IVOR+0x20(r10)
+ lwz r5, SS_IVOR+0x24(r10)
+ lwz r6, SS_IVOR+0x28(r10)
+ lwz r7, SS_IVOR+0x2c(r10)
+
+ mtspr SPRN_IVOR8, r4
+ mtspr SPRN_IVOR9, r5
+ mtspr SPRN_IVOR10, r6
+ mtspr SPRN_IVOR11, r7
+
+ lwz r4, SS_IVOR+0x30(r10)
+ lwz r5, SS_IVOR+0x34(r10)
+ lwz r6, SS_IVOR+0x38(r10)
+ lwz r7, SS_IVOR+0x3c(r10)
+
+ mtspr SPRN_IVOR12, r4
+ mtspr SPRN_IVOR13, r5
+ mtspr SPRN_IVOR14, r6
+ mtspr SPRN_IVOR15, r7
+
+ lwz r4, SS_IVOR+0x40(r10)
+ lwz r5, SS_IVOR+0x44(r10)
+ lwz r6, SS_IVOR+0x48(r10)
+ lwz r7, SS_IVOR+0x4c(r10)
+
+ mtspr SPRN_IVOR32, r4
+ mtspr SPRN_IVOR33, r5
+ mtspr SPRN_IVOR34, r6
+ mtspr SPRN_IVOR35, r7
+
+ lwz r4, SS_TCR(r10)
+ lwz r5, SS_BUCSR(r10)
+ lwz r6, SS_L1CSR+0(r10)
+ lwz r7, SS_L1CSR+4(r10)
+ lwz r8, SS_USPRG+0(r10)
+
+ mtspr SPRN_TCR, r4
+ mtspr SPRN_BUCSR, r5
+
+ msync
+ isync
+ mtspr SPRN_L1CSR0, r6
+ isync
+
+ mtspr SPRN_L1CSR1, r7
+ isync
+
+ mtspr SPRN_USPRG0, r8
+
+ lmw r12, SS_GPREG(r10)
+
+ lwz r1, SS_SP(r10)
+ lwz r2, SS_CURRENT(r10)
+ lwz r4, SS_MSR(r10)
+ lwz r5, SS_LR(r10)
+ lwz r6, SS_CR(r10)
+
+ msync
+ mtmsr r4
+ isync
+
+ mtlr r5
+ mtcr r6
+
+ li r4, 0
+ mtspr SPRN_TBWL, r4
+
+ lwz r4, SS_TB+0(r10)
+ lwz r5, SS_TB+4(r10)
+
+ mtspr SPRN_TBWU, r4
+ mtspr SPRN_TBWL, r5
+
+ lis r3, 1
+ mtdec r3
+
+ blr
diff --git a/arch/powerpc/sysdev/fsl_pmc.c b/arch/powerpc/sysdev/fsl_pmc.c
index 592a0f8..2b7f62d 100644
--- a/arch/powerpc/sysdev/fsl_pmc.c
+++ b/arch/powerpc/sysdev/fsl_pmc.c
@@ -2,6 +2,7 @@
* Suspend/resume support
*
* Copyright 2009 MontaVista Software, Inc.
+ * Copyright 2010-2012 Freescale Semiconductor Inc.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
*
@@ -19,39 +20,82 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/of_platform.h>
+#include <linux/pm.h>
+#include <asm/cacheflush.h>
+
+#include <sysdev/fsl_soc.h>
struct pmc_regs {
__be32 devdisr;
__be32 devdisr2;
- __be32 :32;
- __be32 :32;
- __be32 pmcsr;
-#define PMCSR_SLP (1 << 17)
+ __be32 res1;
+ __be32 res2;
+ __be32 powmgtcsr;
+#define POWMGTCSR_SLP 0x00020000
+#define POWMGTCSR_DPSLP 0x00100000
+ __be32 res3[2];
+ __be32 pmcdr;
};
-static struct device *pmc_dev;
static struct pmc_regs __iomem *pmc_regs;
+static unsigned int pmc_flag;
+
+#define PMC_SLEEP 0x1
+#define PMC_DEEP_SLEEP 0x2
static int pmc_suspend_enter(suspend_state_t state)
{
- int ret;
+ int ret = 0;
+
+ switch (state) {
+#ifdef CONFIG_PPC_85xx
+ case PM_SUSPEND_MEM:
+#ifdef CONFIG_SPE
+ enable_kernel_spe();
+#endif
+ enable_kernel_fp();
+
+ pr_debug("%s: Entering deep sleep\n", __func__);
+
+ local_irq_disable();
+ mpc85xx_enter_deep_sleep(get_immrbase(), POWMGTCSR_DPSLP);
+
+ pr_debug("%s: Resumed from deep sleep\n", __func__);
+ break;
+#endif
+
+ case PM_SUSPEND_STANDBY:
+ local_irq_disable();
+ flush_dcache_L1();
- setbits32(&pmc_regs->pmcsr, PMCSR_SLP);
- /* At this point, the CPU is asleep. */
+ setbits32(&pmc_regs->powmgtcsr, POWMGTCSR_SLP);
+ /* At this point, the CPU is asleep. */
- /* Upon resume, wait for SLP bit to be clear. */
- ret = spin_event_timeout((in_be32(&pmc_regs->pmcsr) & PMCSR_SLP) == 0,
- 10000, 10) ? 0 : -ETIMEDOUT;
- if (ret)
- dev_err(pmc_dev, "tired waiting for SLP bit to clear\n");
+ /* Upon resume, wait for SLP bit to be clear. */
+ ret = spin_event_timeout(
+ (in_be32(&pmc_regs->powmgtcsr) & POWMGTCSR_SLP) == 0,
+ 10000, 10);
+ if (!ret) {
+ pr_err("%s: timeout waiting for SLP bit "
+ "to be cleared\n", __func__);
+ ret = -EINVAL;
+ }
+ break;
+
+ default:
+ ret = -EINVAL;
+
+ }
return ret;
}
static int pmc_suspend_valid(suspend_state_t state)
{
- if (state != PM_SUSPEND_STANDBY)
+ if (((pmc_flag & PMC_SLEEP) && (state == PM_SUSPEND_STANDBY)) ||
+ ((pmc_flag & PMC_DEEP_SLEEP) && (state == PM_SUSPEND_MEM)))
+ return 1;
+ else
return 0;
- return 1;
}
static const struct platform_suspend_ops pmc_suspend_ops = {
@@ -59,14 +103,24 @@ static const struct platform_suspend_ops pmc_suspend_ops = {
.enter = pmc_suspend_enter,
};
-static int pmc_probe(struct platform_device *ofdev)
+static int pmc_probe(struct platform_device *pdev)
{
- pmc_regs = of_iomap(ofdev->dev.of_node, 0);
+ struct device_node *np = pdev->dev.of_node;
+
+ pmc_regs = of_iomap(np, 0);
if (!pmc_regs)
return -ENOMEM;
- pmc_dev = &ofdev->dev;
+ pmc_flag = PMC_SLEEP;
+ if (of_device_is_compatible(np, "fsl,mpc8536-pmc"))
+ pmc_flag |= PMC_DEEP_SLEEP;
+
+ if (of_device_is_compatible(np, "fsl,p1022-pmc"))
+ pmc_flag |= PMC_DEEP_SLEEP;
+
suspend_set_ops(&pmc_suspend_ops);
+
+ pr_info("Freescale PMC driver\n");
return 0;
}
diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h
index c6d0073..949377d 100644
--- a/arch/powerpc/sysdev/fsl_soc.h
+++ b/arch/powerpc/sysdev/fsl_soc.h
@@ -48,5 +48,10 @@ extern struct platform_diu_data_ops diu_ops;
void fsl_hv_restart(char *cmd);
void fsl_hv_halt(void);
+/*
+ * Cast the ccsrbar to 64-bit parameter so that the assembly
+ * code can be compatible with both 32-bit & 36-bit.
+ */
+extern void mpc85xx_enter_deep_sleep(u64 ccsrbar, u32 powmgtreq);
#endif
#endif
--
1.6.4.1
^ permalink raw reply related
* [PATCH v4 3/4] fsl_pmc: Add API to enable device as wakeup event source
From: Zhao Chenhui @ 2012-03-16 9:27 UTC (permalink / raw)
To: linuxppc-dev; +Cc: devicetree-discuss, linux-kernel
Add APIs for setting wakeup source and lossless Ethernet in low power modes.
These APIs can be used by wake-on-packet feature.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
---
arch/powerpc/sysdev/fsl_pmc.c | 71 ++++++++++++++++++++++++++++++++++++++++-
arch/powerpc/sysdev/fsl_soc.h | 9 +++++
2 files changed, 79 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/sysdev/fsl_pmc.c b/arch/powerpc/sysdev/fsl_pmc.c
index 2b7f62d..c0c41d6 100644
--- a/arch/powerpc/sysdev/fsl_pmc.c
+++ b/arch/powerpc/sysdev/fsl_pmc.c
@@ -33,6 +33,7 @@ struct pmc_regs {
__be32 powmgtcsr;
#define POWMGTCSR_SLP 0x00020000
#define POWMGTCSR_DPSLP 0x00100000
+#define POWMGTCSR_LOSSLESS 0x00400000
__be32 res3[2];
__be32 pmcdr;
};
@@ -42,6 +43,74 @@ static unsigned int pmc_flag;
#define PMC_SLEEP 0x1
#define PMC_DEEP_SLEEP 0x2
+#define PMC_LOSSLESS 0x4
+
+/**
+ * mpc85xx_pmc_set_wake - enable devices as wakeup event source
+ * @pdev: platform device affected
+ * @enable: True to enable event generation; false to disable
+ *
+ * This enables the device as a wakeup event source, or disables it.
+ *
+ * RETURN VALUE:
+ * 0 is returned on success
+ * -EINVAL is returned if device is not supposed to wake up the system
+ * Error code depending on the platform is returned if both the platform and
+ * the native mechanism fail to enable the generation of wake-up events
+ */
+int mpc85xx_pmc_set_wake(struct platform_device *pdev, bool enable)
+{
+ int ret = 0;
+ struct device_node *clk_np;
+ u32 *prop;
+ u32 pmcdr_mask;
+
+ if (!pmc_regs) {
+ pr_err("%s: PMC is unavailable\n", __func__);
+ return -ENODEV;
+ }
+
+ if (enable && !device_may_wakeup(&pdev->dev))
+ return -EINVAL;
+
+ clk_np = of_parse_phandle(pdev->dev.of_node, "fsl,pmc-handle", 0);
+ if (!clk_np)
+ return -EINVAL;
+
+ prop = (u32 *)of_get_property(clk_np, "fsl,pmcdr-mask", NULL);
+ if (!prop) {
+ ret = -EINVAL;
+ goto out;
+ }
+ pmcdr_mask = be32_to_cpup(prop);
+
+ if (enable)
+ /* clear to enable clock in low power mode */
+ clrbits32(&pmc_regs->pmcdr, pmcdr_mask);
+ else
+ setbits32(&pmc_regs->pmcdr, pmcdr_mask);
+
+out:
+ of_node_put(clk_np);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mpc85xx_pmc_set_wake);
+
+/**
+ * mpc85xx_pmc_set_lossless_ethernet - enable lossless ethernet
+ * in (deep) sleep mode
+ * @enable: True to enable event generation; false to disable
+ */
+void mpc85xx_pmc_set_lossless_ethernet(int enable)
+{
+ if (pmc_flag & PMC_LOSSLESS) {
+ if (enable)
+ setbits32(&pmc_regs->powmgtcsr, POWMGTCSR_LOSSLESS);
+ else
+ clrbits32(&pmc_regs->powmgtcsr, POWMGTCSR_LOSSLESS);
+ }
+}
+EXPORT_SYMBOL_GPL(mpc85xx_pmc_set_lossless_ethernet);
static int pmc_suspend_enter(suspend_state_t state)
{
@@ -116,7 +185,7 @@ static int pmc_probe(struct platform_device *pdev)
pmc_flag |= PMC_DEEP_SLEEP;
if (of_device_is_compatible(np, "fsl,p1022-pmc"))
- pmc_flag |= PMC_DEEP_SLEEP;
+ pmc_flag |= PMC_DEEP_SLEEP | PMC_LOSSLESS;
suspend_set_ops(&pmc_suspend_ops);
diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h
index 949377d..8976534 100644
--- a/arch/powerpc/sysdev/fsl_soc.h
+++ b/arch/powerpc/sysdev/fsl_soc.h
@@ -3,6 +3,7 @@
#ifdef __KERNEL__
#include <asm/mmu.h>
+#include <linux/platform_device.h>
struct spi_device;
@@ -21,6 +22,14 @@ struct device_node;
extern void fsl_rstcr_restart(char *cmd);
+#ifdef CONFIG_FSL_PMC
+extern int mpc85xx_pmc_set_wake(struct platform_device *pdev, bool enable);
+extern void mpc85xx_pmc_set_lossless_ethernet(int enable);
+#else
+#define mpc85xx_pmc_set_wake(pdev, enable) do { } while (0)
+#define mpc85xx_pmc_set_lossless_ethernet(enable) do { } while (0)
+#endif
+
#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
/* The different ports that the DIU can be connected to */
--
1.6.4.1
^ permalink raw reply related
* [PATCH v4 4/4] powerpc/85xx: add support to JOG feature using cpufreq interface
From: Zhao Chenhui @ 2012-03-16 9:28 UTC (permalink / raw)
To: linuxppc-dev; +Cc: devicetree-discuss, linux-kernel
Some 85xx silicons like MPC8536 and P1022 have a JOG feature, which provides
a dynamic mechanism to lower or raise the CPU core clock at runtime.
This patch adds the support to change CPU frequency using the standard
cpufreq interface. The ratio CORE to CCB can be 1:1(except MPC8536), 3:2,
2:1, 5:2, 3:1, 7:2 and 4:1.
Two CPU cores on P1022 must not in the low power state during the frequency
transition. The driver uses a atomic counter to meet the requirement.
The jog mode frequency transition process on the MPC8536 is similar to
the deep sleep process. The driver need save the CPU state and restore
it after CPU warm reset.
Note:
* The I/O peripherals such as PCIe and eTSEC may lose packets during
the jog mode frequency transition.
* The driver doesn't support MPC8536 Rev 1.0 due to a JOG erratum.
Subsequent revisions of MPC8536 have corrected the erratum.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
CC: Scott Wood <scottwood@freescale.com>
---
Changes for v4:
* Incorporated Scott's commets.
arch/powerpc/platforms/85xx/Makefile | 1 +
arch/powerpc/platforms/85xx/cpufreq-jog.c | 416 +++++++++++++++++++++++++++++
arch/powerpc/platforms/Kconfig | 11 +
arch/powerpc/sysdev/fsl_soc.h | 5 +
include/linux/cpu.h | 4 +
kernel/cpu.c | 60 ++--
6 files changed, 467 insertions(+), 30 deletions(-)
create mode 100644 arch/powerpc/platforms/85xx/cpufreq-jog.c
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index f9fcbf4..eeaa1f4 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -5,6 +5,7 @@ obj-$(CONFIG_SMP) += smp.o
ifneq ($(CONFIG_PPC_E500MC),y)
obj-$(CONFIG_SUSPEND) += sleep.o
endif
+obj-$(CONFIG_MPC85xx_CPUFREQ) += cpufreq-jog.o
obj-y += common.o
diff --git a/arch/powerpc/platforms/85xx/cpufreq-jog.c b/arch/powerpc/platforms/85xx/cpufreq-jog.c
new file mode 100644
index 0000000..5d427ab
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/cpufreq-jog.c
@@ -0,0 +1,416 @@
+/*
+ * Copyright (C) 2008-2012 Freescale Semiconductor, Inc.
+ * Author: Dave Liu <daveliu@freescale.com>
+ * Modifier: Chenhui Zhao <chenhui.zhao@freescale.com>
+ *
+ * The cpufreq driver is for Freescale 85xx processor,
+ * based on arch/powerpc/platforms/cell/cbe_cpufreq.c
+ * (C) Copyright IBM Deutschland Entwicklung GmbH 2005-2007
+ * Christian Krafft <krafft@de.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/cpufreq.h>
+#include <linux/of_platform.h>
+#include <linux/suspend.h>
+#include <linux/cpu.h>
+
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/reg.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/smp.h>
+
+#include <sysdev/fsl_soc.h>
+
+static DEFINE_MUTEX(mpc85xx_switch_mutex);
+static void __iomem *guts;
+
+static u32 sysfreq;
+static unsigned int max_pll[2];
+static atomic_t in_jog_process;
+static struct cpufreq_frequency_table *mpc85xx_freqs;
+static int (*set_pll)(unsigned int cpu, unsigned int pll);
+
+static struct cpufreq_frequency_table mpc8536_freqs_table[] = {
+ {3, 0},
+ {4, 0},
+ {5, 0},
+ {6, 0},
+ {7, 0},
+ {8, 0},
+ {0, CPUFREQ_TABLE_END},
+};
+
+static struct cpufreq_frequency_table p1022_freqs_table[] = {
+ {2, 0},
+ {3, 0},
+ {4, 0},
+ {5, 0},
+ {6, 0},
+ {7, 0},
+ {8, 0},
+ {0, CPUFREQ_TABLE_END},
+};
+
+#define FREQ_500MHz 500000000
+#define FREQ_800MHz 800000000
+
+#define CORE_RATIO_STRIDE 8
+#define CORE_RATIO_MASK 0x3f
+#define CORE_RATIO_SHIFT 16
+
+#define PORPLLSR 0x0 /* Power-On Reset PLL ratio status register */
+
+#define PMJCR 0x7c /* Power Management Jog Control Register */
+#define PMJCR_CORE0_SPD 0x00001000
+#define PMJCR_CORE_SPD 0x00002000
+
+#define POWMGTCSR 0x80 /* Power management control and status register */
+#define POWMGTCSR_JOG 0x00200000
+#define POWMGTCSR_INT_MASK 0x00000f00
+
+static void spin_while_jogging(void *dummy)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ atomic_inc(&in_jog_process);
+
+ while (atomic_read(&in_jog_process) != 0)
+ barrier();
+
+ local_irq_restore(flags);
+}
+
+static int get_pll(int hw_cpu)
+{
+ int shift;
+ u32 val = in_be32(guts + PORPLLSR);
+
+ shift = hw_cpu * CORE_RATIO_STRIDE + CORE_RATIO_SHIFT;
+
+ return (val >> shift) & CORE_RATIO_MASK;
+}
+
+static int mpc8536_set_pll(unsigned int cpu, unsigned int pll)
+{
+ u32 corefreq, val, mask;
+ unsigned int cur_pll = get_pll(0);
+ unsigned long flags;
+
+ if (pll == cur_pll)
+ return 0;
+
+ val = (pll & CORE_RATIO_MASK) << CORE_RATIO_SHIFT;
+
+ corefreq = sysfreq * pll / 2;
+ /*
+ * Set the COREx_SPD bit if the requested core frequency
+ * is larger than the threshold frequency.
+ */
+ if (corefreq > FREQ_800MHz)
+ val |= PMJCR_CORE_SPD;
+
+ mask = (CORE_RATIO_MASK << CORE_RATIO_SHIFT) | PMJCR_CORE_SPD;
+ clrsetbits_be32(guts + PMJCR, mask, val);
+
+ /* readback to sync write */
+ in_be32(guts + PMJCR);
+
+ local_irq_save(flags);
+ mpc85xx_enter_jog(get_immrbase(), POWMGTCSR_JOG);
+ local_irq_restore(flags);
+
+ /* verify */
+ cur_pll = get_pll(0);
+ if (cur_pll != pll) {
+ pr_err("%s: error. The current PLL of core 0 is %d instead of %d.\n",
+ __func__, cur_pll, pll);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int p1022_set_pll(unsigned int cpu, unsigned int pll)
+{
+ int index, hw_cpu = get_hard_smp_processor_id(cpu);
+ int shift;
+ u32 corefreq, val, mask = 0;
+ unsigned int cur_pll = get_pll(hw_cpu);
+ unsigned long flags;
+ int ret = 0;
+
+ if (pll == cur_pll)
+ return 0;
+
+ shift = hw_cpu * CORE_RATIO_STRIDE + CORE_RATIO_SHIFT;
+ val = (pll & CORE_RATIO_MASK) << shift;
+
+ corefreq = sysfreq * pll / 2;
+ /*
+ * Set the COREx_SPD bit if the requested core frequency
+ * is larger than the threshold frequency.
+ */
+ if (corefreq > FREQ_500MHz)
+ val |= PMJCR_CORE0_SPD << hw_cpu;
+
+ mask = (CORE_RATIO_MASK << shift) | (PMJCR_CORE0_SPD << hw_cpu);
+ clrsetbits_be32(guts + PMJCR, mask, val);
+
+ /* readback to sync write */
+ in_be32(guts + PMJCR);
+
+ cpu_hotplug_disable_before_freeze();
+ /*
+ * A Jog request can not be asserted when any core is in a low
+ * power state on P1022. Before executing a jog request, any
+ * core which is in a low power state must be waked by a
+ * interrupt, and keep waking up until the sequence is
+ * finished.
+ */
+ for_each_present_cpu(index) {
+ if (!cpu_online(index)) {
+ cpu_hotplug_enable_after_thaw();
+ pr_err("%s: error, core%d is down.\n", __func__, index);
+ return -1;
+ }
+ }
+
+ atomic_set(&in_jog_process, 0);
+ smp_call_function(spin_while_jogging, NULL, 0);
+
+ local_irq_save(flags);
+
+ /* Wait for the other core to wake. */
+ if (!spin_event_timeout(atomic_read(&in_jog_process) == 1, 1000, 100)) {
+ pr_err("%s: timeout, the other core is not at running state.\n",
+ __func__);
+ ret = -1;
+ goto err;
+ }
+
+ out_be32(guts + POWMGTCSR, POWMGTCSR_JOG | POWMGTCSR_INT_MASK);
+
+ if (!spin_event_timeout(
+ (in_be32(guts + POWMGTCSR) & POWMGTCSR_JOG) == 0, 1000, 100)) {
+ pr_err("%s: timeout, fail to switch the core frequency.\n",
+ __func__);
+ ret = -1;
+ goto err;
+ }
+
+ clrbits32(guts + POWMGTCSR, POWMGTCSR_INT_MASK);
+ in_be32(guts + POWMGTCSR);
+
+ atomic_set(&in_jog_process, 0);
+err:
+ local_irq_restore(flags);
+ cpu_hotplug_enable_after_thaw();
+
+ /* verify */
+ cur_pll = get_pll(hw_cpu);
+ if (cur_pll != pll) {
+ pr_err("%s: error, the current PLL of core %d is %d instead of %d.\n",
+ __func__, hw_cpu, cur_pll, pll);
+ return -1;
+ }
+
+ return ret;
+}
+
+/*
+ * cpufreq functions
+ */
+static int mpc85xx_cpufreq_cpu_init(struct cpufreq_policy *policy)
+{
+ unsigned int i, cur_pll;
+ int hw_cpu = get_hard_smp_processor_id(policy->cpu);
+
+ if (!cpu_present(policy->cpu))
+ return -ENODEV;
+
+ /* the latency of a transition, the unit is ns */
+ policy->cpuinfo.transition_latency = 2000;
+
+ cur_pll = get_pll(hw_cpu);
+
+ /* initialize frequency table */
+ pr_debug("core%d frequency table:\n", hw_cpu);
+ for (i = 0; mpc85xx_freqs[i].frequency != CPUFREQ_TABLE_END; i++) {
+ if (mpc85xx_freqs[i].index <= max_pll[hw_cpu]) {
+ /* The frequency unit is kHz. */
+ mpc85xx_freqs[i].frequency =
+ (sysfreq * mpc85xx_freqs[i].index / 2) / 1000;
+ } else {
+ mpc85xx_freqs[i].frequency = CPUFREQ_ENTRY_INVALID;
+ }
+
+ pr_debug("%d: %dkHz\n", i, mpc85xx_freqs[i].frequency);
+
+ if (mpc85xx_freqs[i].index == cur_pll)
+ policy->cur = mpc85xx_freqs[i].frequency;
+ }
+ pr_debug("current pll is at %d, and core freq is%d\n",
+ cur_pll, policy->cur);
+
+ cpufreq_frequency_table_get_attr(mpc85xx_freqs, policy->cpu);
+
+ /*
+ * This ensures that policy->cpuinfo_min
+ * and policy->cpuinfo_max are set correctly.
+ */
+ return cpufreq_frequency_table_cpuinfo(policy, mpc85xx_freqs);
+}
+
+static int mpc85xx_cpufreq_cpu_exit(struct cpufreq_policy *policy)
+{
+ cpufreq_frequency_table_put_attr(policy->cpu);
+
+ return 0;
+}
+
+static int mpc85xx_cpufreq_verify(struct cpufreq_policy *policy)
+{
+ return cpufreq_frequency_table_verify(policy, mpc85xx_freqs);
+}
+
+static int mpc85xx_cpufreq_target(struct cpufreq_policy *policy,
+ unsigned int target_freq,
+ unsigned int relation)
+{
+ struct cpufreq_freqs freqs;
+ unsigned int new;
+ int ret = 0;
+
+ if (!set_pll)
+ return -ENODEV;
+
+ cpufreq_frequency_table_target(policy,
+ mpc85xx_freqs,
+ target_freq,
+ relation,
+ &new);
+
+ freqs.old = policy->cur;
+ freqs.new = mpc85xx_freqs[new].frequency;
+ freqs.cpu = policy->cpu;
+
+ mutex_lock(&mpc85xx_switch_mutex);
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+ ret = set_pll(policy->cpu, mpc85xx_freqs[new].index);
+ if (!ret) {
+ pr_info("cpufreq: Setting core%d frequency to %d kHz and PLL ratio to %d:2\n",
+ policy->cpu, mpc85xx_freqs[new].frequency,
+ mpc85xx_freqs[new].index);
+
+ ppc_proc_freq = freqs.new * 1000ul;
+ }
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+ mutex_unlock(&mpc85xx_switch_mutex);
+
+ return ret;
+}
+
+static struct cpufreq_driver mpc85xx_cpufreq_driver = {
+ .verify = mpc85xx_cpufreq_verify,
+ .target = mpc85xx_cpufreq_target,
+ .init = mpc85xx_cpufreq_cpu_init,
+ .exit = mpc85xx_cpufreq_cpu_exit,
+ .name = "mpc85xx-JOG",
+ .owner = THIS_MODULE,
+ .flags = CPUFREQ_CONST_LOOPS,
+};
+
+static int mpc85xx_job_probe(struct platform_device *ofdev)
+{
+ struct device_node *np = ofdev->dev.of_node;
+ unsigned int svr;
+
+ if (of_device_is_compatible(np, "fsl,mpc8536-guts")) {
+ svr = mfspr(SPRN_SVR);
+ if ((svr & 0x7fff) == 0x10) {
+ pr_err("MPC8536 Rev 1.0 do not support JOG.\n");
+ return -ENODEV;
+ }
+ mpc85xx_freqs = mpc8536_freqs_table;
+ set_pll = mpc8536_set_pll;
+ } else if (of_device_is_compatible(np, "fsl,p1022-guts")) {
+ mpc85xx_freqs = p1022_freqs_table;
+ set_pll = p1022_set_pll;
+ } else {
+ return -ENODEV;
+ }
+
+ sysfreq = fsl_get_sys_freq();
+
+ guts = of_iomap(np, 0);
+ if (!guts)
+ return -ENODEV;
+
+ max_pll[0] = get_pll(0);
+ if (mpc85xx_freqs == p1022_freqs_table)
+ max_pll[1] = get_pll(1);
+
+ pr_info("Freescale MPC85xx CPU frequency switching(JOG) driver\n");
+
+ return cpufreq_register_driver(&mpc85xx_cpufreq_driver);
+}
+
+static int mpc85xx_jog_remove(struct platform_device *ofdev)
+{
+ iounmap(guts);
+ cpufreq_unregister_driver(&mpc85xx_cpufreq_driver);
+
+ return 0;
+}
+
+static struct of_device_id mpc85xx_jog_ids[] = {
+ { .compatible = "fsl,mpc8536-guts", },
+ { .compatible = "fsl,p1022-guts", },
+ {}
+};
+
+static struct platform_driver mpc85xx_jog_driver = {
+ .driver = {
+ .name = "mpc85xx_cpufreq_jog",
+ .owner = THIS_MODULE,
+ .of_match_table = mpc85xx_jog_ids,
+ },
+ .probe = mpc85xx_job_probe,
+ .remove = mpc85xx_jog_remove,
+};
+
+static int __init mpc85xx_jog_init(void)
+{
+ return platform_driver_register(&mpc85xx_jog_driver);
+}
+
+static void __exit mpc85xx_jog_exit(void)
+{
+ platform_driver_unregister(&mpc85xx_jog_driver);
+}
+
+module_init(mpc85xx_jog_init);
+module_exit(mpc85xx_jog_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dave Liu <daveliu@freescale.com>");
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 236ab67..9527101 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -196,6 +196,17 @@ config CPU_FREQ_PMAC64
This adds support for frequency switching on Apple iMac G5,
and some of the more recent desktop G5 machines as well.
+config MPC85xx_CPUFREQ
+ bool "Support for Freescale MPC85xx CPU freq"
+ depends on PPC_85xx && PPC32 && !PPC_E500MC
+ default y
+ select CPU_FREQ_TABLE
+ help
+ This adds support for dynamic frequency switching on
+ Freescale MPC85xx by cpufreq interface. MPC8536 and P1022
+ have a JOG feature, which provides a dynamic mechanism
+ to lower or raise the CPU core clock at runtime.
+
config PPC_PASEMI_CPUFREQ
bool "Support for PA Semi PWRficient"
depends on PPC_PASEMI
diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/fsl_soc.h
index 8976534..401cac0 100644
--- a/arch/powerpc/sysdev/fsl_soc.h
+++ b/arch/powerpc/sysdev/fsl_soc.h
@@ -62,5 +62,10 @@ void fsl_hv_halt(void);
* code can be compatible with both 32-bit & 36-bit.
*/
extern void mpc85xx_enter_deep_sleep(u64 ccsrbar, u32 powmgtreq);
+
+static inline void mpc85xx_enter_jog(u64 ccsrbar, u32 powmgtreq)
+{
+ mpc85xx_enter_deep_sleep(ccsrbar, powmgtreq);
+}
#endif
#endif
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 1f65875..0bc1c7c 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -139,6 +139,8 @@ void notify_cpu_starting(unsigned int cpu);
extern void cpu_maps_update_begin(void);
extern void cpu_maps_update_done(void);
+extern void cpu_hotplug_disable_before_freeze(void);
+extern void cpu_hotplug_enable_after_thaw(void);
#else /* CONFIG_SMP */
#define cpu_notifier(fn, pri) do { (void)(fn); } while (0)
@@ -160,6 +162,8 @@ static inline void cpu_maps_update_done(void)
{
}
+static inline void cpu_hotplug_disable_before_freeze(void) {}
+static inline void cpu_hotplug_enable_after_thaw(void) {}
#endif /* CONFIG_SMP */
extern struct bus_type cpu_subsys;
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 2060c6e..c4cd342 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -381,6 +381,36 @@ out:
}
EXPORT_SYMBOL_GPL(cpu_up);
+/*
+ * Prevent regular CPU hotplug from racing with the freezer, by disabling CPU
+ * hotplug when tasks are about to be frozen. Also, don't allow the freezer
+ * to continue until any currently running CPU hotplug operation gets
+ * completed.
+ * To modify the 'cpu_hotplug_disabled' flag, we need to acquire the
+ * 'cpu_add_remove_lock'. And this same lock is also taken by the regular
+ * CPU hotplug path and released only after it is complete. Thus, we
+ * (and hence the freezer) will block here until any currently running CPU
+ * hotplug operation gets completed.
+ */
+void cpu_hotplug_disable_before_freeze(void)
+{
+ cpu_maps_update_begin();
+ cpu_hotplug_disabled = 1;
+ cpu_maps_update_done();
+}
+
+
+/*
+ * When tasks have been thawed, re-enable regular CPU hotplug (which had been
+ * disabled while beginning to freeze tasks).
+ */
+void cpu_hotplug_enable_after_thaw(void)
+{
+ cpu_maps_update_begin();
+ cpu_hotplug_disabled = 0;
+ cpu_maps_update_done();
+}
+
#ifdef CONFIG_PM_SLEEP_SMP
static cpumask_var_t frozen_cpus;
@@ -479,36 +509,6 @@ static int __init alloc_frozen_cpus(void)
core_initcall(alloc_frozen_cpus);
/*
- * Prevent regular CPU hotplug from racing with the freezer, by disabling CPU
- * hotplug when tasks are about to be frozen. Also, don't allow the freezer
- * to continue until any currently running CPU hotplug operation gets
- * completed.
- * To modify the 'cpu_hotplug_disabled' flag, we need to acquire the
- * 'cpu_add_remove_lock'. And this same lock is also taken by the regular
- * CPU hotplug path and released only after it is complete. Thus, we
- * (and hence the freezer) will block here until any currently running CPU
- * hotplug operation gets completed.
- */
-void cpu_hotplug_disable_before_freeze(void)
-{
- cpu_maps_update_begin();
- cpu_hotplug_disabled = 1;
- cpu_maps_update_done();
-}
-
-
-/*
- * When tasks have been thawed, re-enable regular CPU hotplug (which had been
- * disabled while beginning to freeze tasks).
- */
-void cpu_hotplug_enable_after_thaw(void)
-{
- cpu_maps_update_begin();
- cpu_hotplug_disabled = 0;
- cpu_maps_update_done();
-}
-
-/*
* When callbacks for CPU hotplug notifications are being executed, we must
* ensure that the state of the system with respect to the tasks being frozen
* or not, as reported by the notification, remains unchanged *throughout the
--
1.6.4.1
^ permalink raw reply related
* [PATCH] fsl_pmc: update device bindings
From: Zhao Chenhui @ 2012-03-16 9:31 UTC (permalink / raw)
To: linuxppc-dev; +Cc: devicetree-discuss, linux-kernel, linux-doc
From: Li Yang <leoli@freescale.com>
* Added compatible "fsl,p1022-pmc".
* Added clock nodes to control the clock of wake-up source.
* Used "fsl,pmc-handle" property to connect device and clock node.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
---
.../devicetree/bindings/powerpc/fsl/pmc.txt | 65 ++++++++++++--------
1 files changed, 40 insertions(+), 25 deletions(-)
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/pmc.txt b/Documentation/devicetree/bindings/powerpc/fsl/pmc.txt
index 07256b7..d296e88 100644
--- a/Documentation/devicetree/bindings/powerpc/fsl/pmc.txt
+++ b/Documentation/devicetree/bindings/powerpc/fsl/pmc.txt
@@ -9,22 +9,26 @@ Properties:
"fsl,mpc8548-pmc" should be listed for any chip whose PMC is
compatible. "fsl,mpc8536-pmc" should also be listed for any chip
- whose PMC is compatible, and implies deep-sleep capability.
+ whose PMC is compatible, and implies deep-sleep capability and
+ wake on user defined packet(wakeup on ARP). "fsl,p1022-pmc"
+ should be listed for any chip whose PMC is compatible, and
+ implies lossless Ethernet capability during sleep or deep sleep.
"fsl,mpc8641d-pmc" should be listed for any chip whose PMC is
compatible; all statements below that apply to "fsl,mpc8548-pmc" also
apply to "fsl,mpc8641d-pmc".
Compatibility does not include bit assignments in SCCR/PMCDR/DEVDISR; these
- bit assignments are indicated via the sleep specifier in each device's
- sleep property.
+ bit assignments are indicated via the clock nodes. Device which has a
+ controllable clock source should have a "fsl,pmc-handle" property pointing
+ to the clock node.
- reg: For devices compatible with "fsl,mpc8349-pmc", the first resource
is the PMC block, and the second resource is the Clock Configuration
block.
- For devices compatible with "fsl,mpc8548-pmc", the first resource
- is a 32-byte block beginning with DEVDISR.
+ For devices compatible with "fsl,mpc8548-pmc", the resource is a 32-byte
+ block beginning with the register DEVDISR.
- interrupts: For "fsl,mpc8349-pmc"-compatible devices, the first
resource is the PMC block interrupt.
@@ -33,31 +37,42 @@ Properties:
this is a phandle to an "fsl,gtm" node on which timer 4 can be used as
a wakeup source from deep sleep.
-Sleep specifiers:
-
- fsl,mpc8349-pmc: Sleep specifiers consist of one cell. For each bit
- that is set in the cell, the corresponding bit in SCCR will be saved
- and cleared on suspend, and restored on resume. This sleep controller
- supports disabling and resuming devices at any time.
-
- fsl,mpc8536-pmc: Sleep specifiers consist of three cells, the third of
- which will be ORed into PMCDR upon suspend, and cleared from PMCDR
- upon resume. The first two cells are as described for fsl,mpc8578-pmc.
- This sleep controller only supports disabling devices during system
- sleep, or permanently.
+Clock nodes:
+The clock nodes are to describe the masks in PM controller registers for each
+soc clock.
+- fsl,pmcdr-mask: For "fsl,mpc8548-pmc"-compatible devices, some blocks as
+ wake-up sources can run in low power mode. If a block used as a wake-up
+ source in low power mode, the corresponding bit in the register PMCDR should
+ be cleared on suspend and set on resume. If setting bits of the mask,
+ the corresponding blocks will be used as wake-up sources.
- fsl,mpc8548-pmc: Sleep specifiers consist of one or two cells, the
- first of which will be ORed into DEVDISR (and the second into
- DEVDISR2, if present -- this cell should be zero or absent if the
- hardware does not have DEVDISR2) upon a request for permanent device
- disabling. This sleep controller does not support configuring devices
- to disable during system sleep (unless supported by another compatible
- match), or dynamically.
+- fsl,sccr-mask: For "fsl,mpc8349-pmc"-compatible devices, the corresponding
+ bit specified by the mask in SCCR will be saved and cleared on suspend, and
+ restored on resume.
-Example:
+- fsl,devdisr-mask: Contain one or two cells, depending on the availability of
+ DEVDISR2 register. For compatible devices, the mask will be ORed into DEVDISR
+ or DEVDISR2 when the clock should be permenently disabled.
+Example 1:
power@b00 {
compatible = "fsl,mpc8313-pmc", "fsl,mpc8349-pmc";
reg = <0xb00 0x100 0xa00 0x100>;
interrupts = <80 8>;
};
+
+Example 2:
+ power@e0070 {
+ compatible = "fsl,mpc8548-pmc", "fsl,mpc8536-pmc";
+ reg = <0xe0070 0x20>;
+
+ etsec1_clk: soc-clk@24 {
+ fsl,pmcdr-mask = <0x00000080>;
+ };
+ etsec2_clk: soc-clk@25 {
+ fsl,pmcdr-mask = <0x00000040>;
+ };
+ etsec3_clk: soc-clk@26 {
+ fsl,pmcdr-mask = <0x00000020>;
+ };
+ };
--
1.6.4.1
^ permalink raw reply related
* Re: linux-next: manual merge of the trivial tree with the powerpc tree
From: Jiri Kosina @ 2012-03-16 11:10 UTC (permalink / raw)
To: Stephen Rothwell
Cc: linux-kernel, Masanari Iida, linux-next, Paul Mackerras,
linuxppc-dev
In-Reply-To: <20120316145658.3fb06c5213dbca29d6898c4b@canb.auug.org.au>
On Fri, 16 Mar 2012, Stephen Rothwell wrote:
> Today's linux-next merge of the trivial tree got a conflict in
> drivers/char/viotape.c between commit ba7a4822b48f ("powerpc: Remove some
> of the legacy iSeries specific device drivers") from the powerpc tree and
> commit a7ccf3775219 ("char: Fix typo in viotape.c") from the trivial tree.
Dropped a7ccf3775219 in my tree, thanks for report Stephen.
--
Jiri Kosina
SUSE Labs
^ permalink raw reply
* Re: [PATCH 1/2] [v3] powerpc/44x: Fix PCI MSI support for Maui APM821xx SoC and Bluestone board
From: Josh Boyer @ 2012-03-16 12:41 UTC (permalink / raw)
To: Mai La
Cc: Michael Neuling, open-source-review, Tirumala R Marri,
linux-kernel, Josh Boyer, Anton Blanchard, Paul Mackerras,
linuxppc-dev
In-Reply-To: <1331539663-29641-1-git-send-email-mla@apm.com>
On Mon, Mar 12, 2012 at 4:07 AM, Mai La <mla@apm.com> wrote:
> diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4x=
x_msi.c
> index 1c2d7af..63989d0 100644
> --- a/arch/powerpc/sysdev/ppc4xx_msi.c
> +++ b/arch/powerpc/sysdev/ppc4xx_msi.c
> @@ -28,10 +28,11 @@
> =A0#include <linux/of_platform.h>
> =A0#include <linux/interrupt.h>
> =A0#include <linux/export.h>
> +#include <linux/kernel.h>
> =A0#include <asm/prom.h>
> =A0#include <asm/hw_irq.h>
> =A0#include <asm/ppc-pci.h>
> -#include <boot/dcr.h>
> +#include <asm/dcr.h>
> =A0#include <asm/dcr-regs.h>
> =A0#include <asm/msi_bitmap.h>
>
> @@ -43,13 +44,14 @@
> =A0#define PEIH_FLUSH0 =A0 =A00x30
> =A0#define PEIH_FLUSH1 =A0 =A00x38
> =A0#define PEIH_CNTRST =A0 =A00x48
> -#define NR_MSI_IRQS =A0 =A04
> +
> +int msi_irqs;
This should be static.
> =A0struct ppc4xx_msi {
> =A0 =A0 =A0 =A0u32 msi_addr_lo;
> =A0 =A0 =A0 =A0u32 msi_addr_hi;
> =A0 =A0 =A0 =A0void __iomem *msi_regs;
> - =A0 =A0 =A0 int msi_virqs[NR_MSI_IRQS];
> + =A0 =A0 =A0 int *msi_virqs;
> =A0 =A0 =A0 =A0struct msi_bitmap bitmap;
> =A0 =A0 =A0 =A0struct device_node *msi_dev;
> =A0};
> @@ -61,7 +63,7 @@ static int ppc4xx_msi_init_allocator(struct platform_de=
vice *dev,
> =A0{
> =A0 =A0 =A0 =A0int err;
>
> - =A0 =A0 =A0 err =3D msi_bitmap_alloc(&msi_data->bitmap, NR_MSI_IRQS,
> + =A0 =A0 =A0 err =3D msi_bitmap_alloc(&msi_data->bitmap, msi_irqs,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev->dev.of_no=
de);
> =A0 =A0 =A0 =A0if (err)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return err;
> @@ -83,6 +85,9 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, i=
nt nvec, int type)
> =A0 =A0 =A0 =A0struct msi_desc *entry;
> =A0 =A0 =A0 =A0struct ppc4xx_msi *msi_data =3D &ppc4xx_msi;
>
> + =A0 =A0 =A0 msi_data->msi_virqs =3D kmalloc((msi_irqs) * sizeof(int),
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
=A0 =A0 =A0 GFP_KERNEL);
> +
What happens if this allocation fails? Unlikely perhaps, but we should sti=
ll
probably try and handle the error.
> =A0 =A0 =A0 =A0list_for_each_entry(entry, &dev->msi_list, list) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0int_no =3D msi_bitmap_alloc_hwirqs(&msi_da=
ta->bitmap, 1);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (int_no >=3D 0)
<snip>
> @@ -234,6 +241,10 @@ static int __devinit ppc4xx_msi_probe(struct platfor=
m_device *dev)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0goto error_out;
> =A0 =A0 =A0 =A0}
>
> + =A0 =A0 =A0 msi_irqs =3D of_irq_count(dev->dev.of_node);
> + =A0 =A0 =A0 if (!msi_irqs)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return -1;
> +
Maybe return -ENODEV here instead of -1? It probably doesn't matter at the
moment, but if anything actually checked why the probe function failed, tha=
t
would be more descriptive.
josh
^ permalink raw reply
* Please pull 'next' branch of 4xx tree
From: Josh Boyer @ 2012-03-16 13:41 UTC (permalink / raw)
To: Benjamin Herrenschmidt, Stephen Rothwell; +Cc: linuxppc-dev
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi Ben,
A small pull request for linux-next. This adds some commits for Bluestone
from APM, and updates the location of my tree in MAINTAINERS back to
kernel.org.
Stephen, could you change linux-next to pull from this tree instead of the
infradead one?
josh
The following changes since commit 01e8ec4417d3c484986af0adaa0ae6632e0a59cd:
powerpc: Fix power4/970 idle code regression with lockdep
(2012-03-16 09:28:17 +1100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx.git next
Josh Boyer (1):
MAINTAINERS: Update PowerPC 4xx tree
Vinh Nguyen Huu Tuong (3):
powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board
powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone board
powerpc/44x: Add additional device support for APM821xx SoC and
Bluestone board
MAINTAINERS | 2 +-
arch/powerpc/boot/dts/bluestone.dts | 127 +++++++++++++++++++++++++++-
arch/powerpc/kernel/cputable.c | 2 +-
arch/powerpc/platforms/44x/Kconfig | 1 +
arch/powerpc/platforms/44x/ppc44x_simple.c | 2 +-
arch/powerpc/sysdev/ppc4xx_pci.c | 70 +++++++++++++++
6 files changed, 199 insertions(+), 5 deletions(-)
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^ permalink raw reply
* Re: Please pull 'next' branch of 4xx tree
From: Stephen Rothwell @ 2012-03-16 14:50 UTC (permalink / raw)
To: Josh Boyer; +Cc: linuxppc-dev
In-Reply-To: <CA+5PVA4n_G9mtUcExUuJoMWGuWWDh1h1hCPWe-DEy38G5qg40Q@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 268 bytes --]
Hi Josh,
On Fri, 16 Mar 2012 09:41:38 -0400 Josh Boyer <jwboyer@gmail.com> wrote:
>
> Stephen, could you change linux-next to pull from this tree instead of the
> infradead one?
Done.
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
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^ permalink raw reply
* Re: [PATCH] powerpc/85xx:Add usb controller version info
From: Kumar Gala @ 2012-03-16 15:06 UTC (permalink / raw)
To: Ramneek Mehresh; +Cc: devicetree-discuss, linuxppc-dev
In-Reply-To: <1326865248-3333-1-git-send-email-ramneek.mehresh@freescale.com>
On Jan 17, 2012, at 11:40 PM, Ramneek Mehresh wrote:
> Add usb controller version info for the following:
> MPC8536, P1010, P1020, P1021, P1022, P1023, P2020, P2041,
> P3041, P3060, P5020
>
> Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
> ---
> Applies on git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc.git
> (branch next)
>
> arch/powerpc/boot/dts/fsl/mpc8536si-post.dtsi | 4 ++--
> arch/powerpc/boot/dts/fsl/p1010si-post.dtsi | 3 +++
> arch/powerpc/boot/dts/fsl/p1020si-post.dtsi | 6 ++++++
> arch/powerpc/boot/dts/fsl/p1021si-post.dtsi | 3 +++
> arch/powerpc/boot/dts/fsl/p1022si-post.dtsi | 6 ++++++
> arch/powerpc/boot/dts/fsl/p1023si-post.dtsi | 3 +++
> arch/powerpc/boot/dts/fsl/p2020si-post.dtsi | 3 +++
> arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 2 ++
> arch/powerpc/boot/dts/fsl/p3041si-post.dtsi | 2 ++
> arch/powerpc/boot/dts/fsl/p3060si-post.dtsi | 6 ++++++
> arch/powerpc/boot/dts/fsl/p5020si-post.dtsi | 2 ++
> 11 files changed, 38 insertions(+), 2 deletions(-)
applied
- k
^ permalink raw reply
* Re: [PATCH 2/2 V3] powerpc/85xx: Add p2020rdb-pc dts support
From: Kumar Gala @ 2012-03-16 15:06 UTC (permalink / raw)
To: <b29983@freescale.com>
Cc: Tang Yuantian, linuxppc-dev, Prabhakar Kushwaha, Poonam Aggrwal
In-Reply-To: <1328860797-9283-1-git-send-email-b29983@freescale.com>
On Feb 10, 2012, at 1:59 AM, <b29983@freescale.com> =
<b29983@freescale.com> wrote:
> From: Tang Yuantian <Yuantian.Tang@freescale.com>
>=20
> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
> Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
> Signed-off-by: Tang Yuantian <b29983@freescale.com>
> ---
> v3:
> -correct the patch author
>=20
> arch/powerpc/boot/dts/p2020rdb-pc.dtsi | 241 =
+++++++++++++++++++++++++++++
> arch/powerpc/boot/dts/p2020rdb-pc_32b.dts | 96 ++++++++++++
> arch/powerpc/boot/dts/p2020rdb-pc_36b.dts | 96 ++++++++++++
> 3 files changed, 433 insertions(+), 0 deletions(-)
> create mode 100644 arch/powerpc/boot/dts/p2020rdb-pc.dtsi
> create mode 100644 arch/powerpc/boot/dts/p2020rdb-pc_32b.dts
> create mode 100644 arch/powerpc/boot/dts/p2020rdb-pc_36b.dts
applied
- k=
^ permalink raw reply
* Re: [PATCH 1/2 v4] powerpc/85xx: Add p1025rdb platform support
From: Kumar Gala @ 2012-03-16 15:07 UTC (permalink / raw)
To: Tabi Timur-B04825; +Cc: linuxppc-dev@lists.ozlabs.org, Fan Zhicheng-B32736
In-Reply-To: <CAOZdJXV+CJvCBShO9sPMn2mptgeewO+=a53PEFV7KegOLfHRWA@mail.gmail.com>
On Feb 16, 2012, at 3:07 PM, Tabi Timur-B04825 wrote:
> On Tue, Feb 14, 2012 at 2:06 AM, Zhicheng Fan <B32736@freescale.com> wrote:
>> From: Zhicheng Fan <b32736@freescale.com>
>>
>> Signed-off-by: Zhicheng Fan <b32736@freescale.com>
>> ---
>
> Acked-by: Timur Tabi <timur@freescale.com>
>
> --
applied
- k
^ permalink raw reply
* Re: [PATCH 2/2 v4] powerpc/dts: Add dts for p1025rdb board
From: Kumar Gala @ 2012-03-16 15:07 UTC (permalink / raw)
To: Tabi Timur-B04825; +Cc: linuxppc-dev@lists.ozlabs.org, Fan Zhicheng-B32736
In-Reply-To: <CAOZdJXWPbH7s=_LsvEnd_p8wrgH2LKWXV8Xi8NgjF_dC_8zqfw@mail.gmail.com>
On Feb 16, 2012, at 3:06 PM, Tabi Timur-B04825 wrote:
> On Tue, Feb 14, 2012 at 2:06 AM, Zhicheng Fan <B32736@freescale.com> wrote:
>> From: Zhicheng Fan <b32736@freescale.com>
>>
>> P1025RDB Overview
>> ------------------
>> 1Gbyte DDR3 SDRAM
>> 32 Mbyte NAND flash
>> 16Mbyte NOR flash
>> 16 Mbyte SPI flash
>> SD connector to interface with the SD memory card
>> Real-time clock on I2C bus
>>
>> PCIe:
>> - x1 PCIe slot
>> - x1 mini-PCIe slot
>>
>> 10/100/1000 BaseT Ethernet ports:
>> - eTSEC1, RGMII: one 10/100/1000 port using AtherosTM AR8021
>> - eTSEC2, SGMII: one 10/100/1000 port using VitesseTM VSC8221
>> - eTSEC3, RGMII: one 10/100/1000 port using AtherosTM AR8021
>>
>> USB 2.0 port:
>> - Two USB2.0 Type A receptacles
>> - One USB2.0 signal to Mini PCIe slot
>>
>> Dual RJ45 UART ports:
>> - DUART interface: supports two UARTs up to 115200 bps for console display
>>
>> Signed-off-by: Zhicheng Fan <b32736@freescale.com>
>> ---
>
> Acked-by: Timur Tabi <timur@freescale.com>
applied
- k
^ permalink raw reply
* Re: [PATCH] powerpc/srio: Fix the relocation errors when building with 64bit
From: Kumar Gala @ 2012-03-16 15:12 UTC (permalink / raw)
To: Liu Gang
Cc: r58472, paul.gortmaker, linux-kernel, r61911, Alexandre.Bounine,
scottwood, akpm, linuxppc-dev
In-Reply-To: <1331002692-9061-1-git-send-email-Gang.Liu@freescale.com>
On Mar 5, 2012, at 8:58 PM, Liu Gang wrote:
> For the file "arch/powerpc/sysdev/fsl_rio.c", there will be some relocation
> errors while using the corenet64_smp_defconfig:
>
> WARNING: modpost: Found 6 section mismatch(es).
> To see full details build your kernel with:
> 'make CONFIG_DEBUG_SECTION_MISMATCH=y'
> GEN .version
> CHK include/generated/compile.h
> UPD include/generated/compile.h
> CC init/version.o
> LD init/built-in.o
> LD .tmp_vmlinux1
> arch/powerpc/sysdev/built-in.o:(__ex_table+0x0):
> relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3208
> arch/powerpc/sysdev/built-in.o:(__ex_table+0x2):
> relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'
> arch/powerpc/sysdev/built-in.o:(__ex_table+0x4):
> relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3230
> arch/powerpc/sysdev/built-in.o:(__ex_table+0x6):
> relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'+c
> arch/powerpc/sysdev/built-in.o:(__ex_table+0x8):
> relocation truncated to fit: R_PPC64_ADDR16 against `.text'+3250
> arch/powerpc/sysdev/built-in.o:(__ex_table+0xa):
> relocation truncated to fit: R_PPC64_ADDR16 against `.fixup'+18
>
> Rewrote the corresponding code with the support of 64bit building.
>
> Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
> ---
> arch/powerpc/sysdev/fsl_rio.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
applied
- k
^ permalink raw reply
* Re: [PATCH v3] powerpc/srio: Fix the compile errors when building with 64bit
From: Kumar Gala @ 2012-03-16 15:13 UTC (permalink / raw)
To: Liu Gang
Cc: r58472, paul.gortmaker, linux-kernel, r61911, Alexandre.Bounine,
akpm, linuxppc-dev, Shaohui Xie
In-Reply-To: <1331280638-23525-1-git-send-email-Gang.Liu@freescale.com>
On Mar 9, 2012, at 2:10 AM, Liu Gang wrote:
> For the file "arch/powerpc/sysdev/fsl_rmu.c", there will be some =
compile
> errors while using the corenet64_smp_defconfig:
>=20
> .../fsl_rmu.c:315: error: cast from pointer to integer of different =
size
> .../fsl_rmu.c:320: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:320: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:320: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:330: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:332: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:339: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:340: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:341: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:348: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:348: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:348: error: cast to pointer from integer of different =
size
> .../fsl_rmu.c:659: error: cast from pointer to integer of different =
size
> .../fsl_rmu.c:659: error: format '%8.8x' expects type 'unsigned int',
> but argument 5 has type 'size_t'
> .../fsl_rmu.c:985: error: cast from pointer to integer of different =
size
> .../fsl_rmu.c:997: error: cast to pointer from integer of different =
size
>=20
> Rewrote the corresponding code with the support of 64bit building.
>=20
> Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
> Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
> Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
> ---
> Changes in v2:
> - Add the struct "rio_dbell_msg" to instead of some DBELL_* macros.
> - Change the "virt_buf" to be "void *" type.
> - Change "Signed-off-by" to "Reported-by" for Paul.
>=20
> Changes in v3:
> - Change the "%8.8lx" to be "%p" and remove the cast of the "buffer"
>=20
> arch/powerpc/sysdev/fsl_rmu.c | 42 =
+++++++++++++++++++++-------------------
> 1 files changed, 22 insertions(+), 20 deletions(-)
applied
- k=
^ permalink raw reply
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