From: ccross@google.com (Colin Cross)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/6] ARM: pm: add generic CPU suspend/resume support
Date: Fri, 11 Feb 2011 18:50:57 -0800 [thread overview]
Message-ID: <AANLkTinL0HgSsFmoxyiBuRA6JiWKsHTLW4wFnVDJf_1w@mail.gmail.com> (raw)
In-Reply-To: <E1Pnvgw-0002yZ-M0@rmk-PC.arm.linux.org.uk>
On Fri, Feb 11, 2011 at 8:17 AM, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:
> This adds core support for saving and restoring CPU coprocessor
> registers for suspend/resume support. ?This contains support for suspend
> with ARM920, ARM926, SA11x0, PXA25x, PXA27x, PXA3xx, V6 and V7 CPUs.
>
> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> ---
> ?arch/arm/include/asm/glue-proc.h | ? ?3 +
> ?arch/arm/include/asm/proc-fns.h ?| ? ?7 ++
> ?arch/arm/kernel/Makefile ? ? ? ? | ? ?1 +
> ?arch/arm/kernel/asm-offsets.c ? ?| ? ?9 +++
> ?arch/arm/kernel/sleep.S ? ? ? ? ?| ?110 ++++++++++++++++++++++++++++++++++++
> ?arch/arm/mm/proc-arm1020.S ? ? ? | ? ?3 +
> ?arch/arm/mm/proc-arm1020e.S ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm1022.S ? ? ? | ? ?3 +
> ?arch/arm/mm/proc-arm1026.S ? ? ? | ? ?3 +
> ?arch/arm/mm/proc-arm6_7.S ? ? ? ?| ? ?6 ++
> ?arch/arm/mm/proc-arm720.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm740.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm7tdmi.S ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm920.S ? ? ? ?| ? 37 ++++++++++++
> ?arch/arm/mm/proc-arm922.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm925.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm926.S ? ? ? ?| ? 37 ++++++++++++
> ?arch/arm/mm/proc-arm940.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm946.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-arm9tdmi.S ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-fa526.S ? ? ? ? | ? ?3 +
> ?arch/arm/mm/proc-feroceon.S ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-mohawk.S ? ? ? ?| ? ?3 +
> ?arch/arm/mm/proc-sa110.S ? ? ? ? | ? ?3 +
> ?arch/arm/mm/proc-sa1100.S ? ? ? ?| ? 39 +++++++++++++
> ?arch/arm/mm/proc-v6.S ? ? ? ? ? ?| ? 50 ++++++++++++++++
> ?arch/arm/mm/proc-v7.S ? ? ? ? ? ?| ?116 ++++++++++++++++++++++++++++----------
> ?arch/arm/mm/proc-xsc3.S ? ? ? ? ?| ? 48 +++++++++++++++-
> ?arch/arm/mm/proc-xscale.S ? ? ? ?| ? 45 ++++++++++++++-
> ?29 files changed, 523 insertions(+), 33 deletions(-)
> ?create mode 100644 arch/arm/kernel/sleep.S
>
> diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h
> index e3bf443..6469521 100644
> --- a/arch/arm/include/asm/glue-proc.h
> +++ b/arch/arm/include/asm/glue-proc.h
> @@ -256,6 +256,9 @@
> ?#define cpu_dcache_clean_area ? ? ? ? ?__glue(CPU_NAME,_dcache_clean_area)
> ?#define cpu_do_switch_mm ? ? ? ? ? ? ? __glue(CPU_NAME,_switch_mm)
> ?#define cpu_set_pte_ext ? ? ? ? ? ? ? ? ? ? ? ?__glue(CPU_NAME,_set_pte_ext)
> +#define cpu_suspend_size ? ? ? ? ? ? ? __glue(CPU_NAME,_suspend_size)
> +#define cpu_do_suspend ? ? ? ? ? ? ? ? __glue(CPU_NAME,_do_suspend)
> +#define cpu_do_resume ? ? ? ? ? ? ? ? ?__glue(CPU_NAME,_do_resume)
> ?#endif
>
> ?#endif
> diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h
> index 6980215..8ec535e 100644
> --- a/arch/arm/include/asm/proc-fns.h
> +++ b/arch/arm/include/asm/proc-fns.h
> @@ -66,6 +66,11 @@ extern struct processor {
> ? ? ? ? * ignore 'ext'.
> ? ? ? ? */
> ? ? ? ?void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext);
> +
> + ? ? ? /* Suspend/resume */
> + ? ? ? unsigned int suspend_size;
> + ? ? ? void (*do_suspend)(void *);
> + ? ? ? void (*do_resume)(void *);
> ?} processor;
>
> ?#ifndef MULTI_CPU
> @@ -86,6 +91,8 @@ extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
> ?#define cpu_do_switch_mm(pgd,mm) ? ? ? processor.switch_mm(pgd,mm)
> ?#endif
>
> +extern void cpu_resume(void);
> +
> ?#include <asm/memory.h>
>
> ?#ifdef CONFIG_MMU
> diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
> index 185ee82..74554f1 100644
> --- a/arch/arm/kernel/Makefile
> +++ b/arch/arm/kernel/Makefile
> @@ -29,6 +29,7 @@ obj-$(CONFIG_MODULES) ? ? ? ? += armksyms.o module.o
> ?obj-$(CONFIG_ARTHUR) ? ? ? ? ? += arthur.o
> ?obj-$(CONFIG_ISA_DMA) ? ? ? ? ?+= dma-isa.o
> ?obj-$(CONFIG_PCI) ? ? ? ? ? ? ?+= bios32.o isa.o
> +obj-$(CONFIG_PM) ? ? ? ? ? ? ? += sleep.o
> ?obj-$(CONFIG_HAVE_SCHED_CLOCK) += sched_clock.o
> ?obj-$(CONFIG_SMP) ? ? ? ? ? ? ?+= smp.o smp_tlb.o
> ?obj-$(CONFIG_HAVE_ARM_SCU) ? ? += smp_scu.o
> diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
> index 5302a91..927522c 100644
> --- a/arch/arm/kernel/asm-offsets.c
> +++ b/arch/arm/kernel/asm-offsets.c
> @@ -13,6 +13,7 @@
> ?#include <linux/sched.h>
> ?#include <linux/mm.h>
> ?#include <linux/dma-mapping.h>
> +#include <asm/cacheflush.h>
> ?#include <asm/glue-df.h>
> ?#include <asm/glue-pf.h>
> ?#include <asm/mach/arch.h>
> @@ -116,6 +117,14 @@ int main(void)
> ?#ifdef MULTI_PABORT
> ? DEFINE(PROCESSOR_PABT_FUNC, ?offsetof(struct processor, _prefetch_abort));
> ?#endif
> +#ifdef MULTI_CPU
> + ?DEFINE(CPU_SLEEP_SIZE, ? ? ? offsetof(struct processor, suspend_size));
> + ?DEFINE(CPU_DO_SUSPEND, ? ? ? offsetof(struct processor, do_suspend));
> + ?DEFINE(CPU_DO_RESUME, ? ? ? ? ? ? ? ?offsetof(struct processor, do_resume));
> +#endif
> +#ifdef MULTI_CACHE
> + ?DEFINE(CACHE_FLUSH_KERN_ALL, offsetof(struct cpu_cache_fns, flush_kern_all));
> +#endif
> ? BLANK();
> ? DEFINE(DMA_BIDIRECTIONAL, ? ?DMA_BIDIRECTIONAL);
> ? DEFINE(DMA_TO_DEVICE, ? ? ? ? ? ? ? ?DMA_TO_DEVICE);
> diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
> new file mode 100644
> index 0000000..9f106fa
> --- /dev/null
> +++ b/arch/arm/kernel/sleep.S
> @@ -0,0 +1,110 @@
> +#include <linux/linkage.h>
> +#include <asm/asm-offsets.h>
> +#include <asm/assembler.h>
> +#include <asm/glue-cache.h>
> +#include <asm/glue-proc.h>
> + ? ? ? .text
> +
> +/*
> + * Save CPU state for a suspend
> + * ?r1 = v:p offset
> + * ?r3 = virtual return function
> + * Note: sp is decremented to allocate space for CPU state on stack
> + * r0-r3,r9,r10,lr corrupted
> + */
> +ENTRY(cpu_suspend)
> + ? ? ? mov ? ? r9, lr
> +#ifdef MULTI_CPU
> + ? ? ? ldr ? ? r10, =processor
> + ? ? ? mov ? ? r2, sp ? ? ? ? ? ? ? ? ?@ current virtual SP
> + ? ? ? ldr ? ? r0, [r10, #CPU_SLEEP_SIZE] @ size of CPU sleep state
> + ? ? ? ldr ? ? ip, [r10, #CPU_DO_RESUME] @ virtual resume function
> + ? ? ? sub ? ? sp, sp, r0 ? ? ? ? ? ? ?@ allocate CPU state on stack
> + ? ? ? mov ? ? r0, sp ? ? ? ? ? ? ? ? ?@ save pointer
> + ? ? ? add ? ? ip, ip, r1 ? ? ? ? ? ? ?@ convert resume fn to phys
> + ? ? ? stmfd ? sp!, {r1, r2, r3, ip} ? @ save v:p, virt SP, retfn, phys resume fn
> + ? ? ? ldr ? ? r3, =sleep_save_sp
> + ? ? ? add ? ? r2, sp, r1 ? ? ? ? ? ? ?@ convert SP to phys
> + ? ? ? str ? ? r2, [r3] ? ? ? ? ? ? ? ?@ save phys SP
> + ? ? ? mov ? ? lr, pc
> + ? ? ? ldr ? ? pc, [r10, #CPU_DO_SUSPEND] @ save CPU state
> +#else
> + ? ? ? mov ? ? r2, sp ? ? ? ? ? ? ? ? ?@ current virtual SP
> + ? ? ? ldr ? ? r0, =cpu_suspend_size
> + ? ? ? sub ? ? sp, sp, r0 ? ? ? ? ? ? ?@ allocate CPU state on stack
> + ? ? ? mov ? ? r0, sp ? ? ? ? ? ? ? ? ?@ save pointer
> + ? ? ? stmfd ? sp!, {r1, r2, r3} ? ? ? @ save v:p, virt SP, return fn
> + ? ? ? ldr ? ? r3, =sleep_save_sp
> + ? ? ? add ? ? r2, sp, r1 ? ? ? ? ? ? ?@ convert SP to phys
> + ? ? ? str ? ? r2, [r3] ? ? ? ? ? ? ? ?@ save phys SP
> + ? ? ? bl ? ? ?cpu_do_suspend
> +#endif
> +
> + ? ? ? @ flush data cache
> +#ifdef MULTI_CACHE
> + ? ? ? ldr ? ? r10, =cpu_cache
> + ? ? ? mov ? ? lr, r9
> + ? ? ? ldr ? ? pc, [r10, #CACHE_FLUSH_KERN_ALL]
> +#else
> + ? ? ? mov ? ? lr, r9
> + ? ? ? b ? ? ? __cpuc_flush_kern_all
> +#endif
> +ENDPROC(cpu_suspend)
> + ? ? ? .ltorg
> +
> +/*
> + * r0 = control register value
> + * r1 = v:p offset (preserved by cpu_do_resume)
> + * r2 = phys page table base
> + * r3 = L1 section flags
> + */
> +ENTRY(cpu_resume_mmu)
> + ? ? ? adr ? ? r4, cpu_resume_turn_mmu_on
> + ? ? ? mov ? ? r4, r4, lsr #20
> + ? ? ? orr ? ? r3, r3, r4, lsl #20
> + ? ? ? ldr ? ? r5, [r2, r4, lsl #2] ? ?@ save old mapping
> + ? ? ? str ? ? r3, [r2, r4, lsl #2] ? ?@ setup 1:1 mapping for mmu code
> + ? ? ? sub ? ? r2, r2, r1
> + ? ? ? ldr ? ? r3, =cpu_resume_after_mmu
> + ? ? ? b ? ? ? cpu_resume_turn_mmu_on
> +ENDPROC(cpu_resume_mmu)
> + ? ? ? .ltorg
> + ? ? ? .align ?5
> +cpu_resume_turn_mmu_on:
> + ? ? ? mcr ? ? p15, 0, r0, c1, c0, 0 ? @ turn on MMU, caches, etc
> + ? ? ? mrc ? ? p15, 0, r0, c0, c0, 0 ? @ read id reg
> + ? ? ? mov ? ? r0, r0
> + ? ? ? mov ? ? r0, r0
> + ? ? ? mov ? ? pc, r3 ? ? ? ? ? ? ? ? ?@ jump to virtual address
> +ENDPROC(cpu_resume_turn_mmu_on)
> +cpu_resume_after_mmu:
> + ? ? ? str ? ? r5, [r2, r4, lsl #2] ? ?@ restore old mapping
> +#ifdef MULTI_CACHE
> + ? ? ? ldr ? ? r10, =cpu_cache
> + ? ? ? ldr ? ? pc, [r10, #CACHE_FLUSH_KERN_ALL]
> +#else
> + ? ? ? b ? ? ? __cpuc_flush_kern_all
> +#endif
> +
> +/*
> + * Note: Yes, part of the following code is located into the .data section.
> + * ? ? ? This is to allow sleep_save_sp to be accessed with a relative load
> + * ? ? ? while we can't rely on any MMU translation. ?We could have put
> + * ? ? ? sleep_save_sp in the .text section as well, but some setups might
> + * ? ? ? insist on it to be truly read-only.
> + */
> + ? ? ? .data
> + ? ? ? .align
> +ENTRY(cpu_resume)
> + ? ? ? ldr ? ? r0, sleep_save_sp ? ? ? @ stack phys addr
> + ? ? ? msr ? ? cpsr_c, #PSR_I_BIT | PSR_F_BIT | SVC_MODE @ set SVC, irqs off
> +#ifdef MULTI_CPU
> + ? ? ? ldmia ? r0!, {r1, sp, lr, pc} ? @ load v:p, stack, return fn, resume fn
> +#else
> + ? ? ? ldmia ? r0!, {r1, sp, lr} ? ? ? @ load v:p, stack, return fn
> + ? ? ? b ? ? ? cpu_do_resume
> +#endif
> +ENDPROC(cpu_resume)
> +
> +sleep_save_sp:
> + ? ? ? .word ? 0 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? @ preserve stack phys ptr here
> diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S
> index bcf748d..226e3d8 100644
> --- a/arch/arm/mm/proc-arm1020.S
> +++ b/arch/arm/mm/proc-arm1020.S
> @@ -493,6 +493,9 @@ arm1020_processor_functions:
> ? ? ? ?.word ? cpu_arm1020_dcache_clean_area
> ? ? ? ?.word ? cpu_arm1020_switch_mm
> ? ? ? ?.word ? cpu_arm1020_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm1020_processor_functions, . - arm1020_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S
> index ab7ec26..86d9c2c 100644
> --- a/arch/arm/mm/proc-arm1020e.S
> +++ b/arch/arm/mm/proc-arm1020e.S
> @@ -474,6 +474,9 @@ arm1020e_processor_functions:
> ? ? ? ?.word ? cpu_arm1020e_dcache_clean_area
> ? ? ? ?.word ? cpu_arm1020e_switch_mm
> ? ? ? ?.word ? cpu_arm1020e_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm1020e_processor_functions, . - arm1020e_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S
> index 831c5e5..83d3dd3 100644
> --- a/arch/arm/mm/proc-arm1022.S
> +++ b/arch/arm/mm/proc-arm1022.S
> @@ -457,6 +457,9 @@ arm1022_processor_functions:
> ? ? ? ?.word ? cpu_arm1022_dcache_clean_area
> ? ? ? ?.word ? cpu_arm1022_switch_mm
> ? ? ? ?.word ? cpu_arm1022_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm1022_processor_functions, . - arm1022_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S
> index e3f7e9a..686043e 100644
> --- a/arch/arm/mm/proc-arm1026.S
> +++ b/arch/arm/mm/proc-arm1026.S
> @@ -452,6 +452,9 @@ arm1026_processor_functions:
> ? ? ? ?.word ? cpu_arm1026_dcache_clean_area
> ? ? ? ?.word ? cpu_arm1026_switch_mm
> ? ? ? ?.word ? cpu_arm1026_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm1026_processor_functions, . - arm1026_processor_functions
>
> ? ? ? ?.section .rodata
> diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S
> index 6a7be18..5f79dc4 100644
> --- a/arch/arm/mm/proc-arm6_7.S
> +++ b/arch/arm/mm/proc-arm6_7.S
> @@ -284,6 +284,9 @@ ENTRY(arm6_processor_functions)
> ? ? ? ? ? ? ? ?.word ? cpu_arm6_dcache_clean_area
> ? ? ? ? ? ? ? ?.word ? cpu_arm6_switch_mm
> ? ? ? ? ? ? ? ?.word ? cpu_arm6_set_pte_ext
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> ? ? ? ? ? ? ? ?.size ? arm6_processor_functions, . - arm6_processor_functions
>
> ?/*
> @@ -301,6 +304,9 @@ ENTRY(arm7_processor_functions)
> ? ? ? ? ? ? ? ?.word ? cpu_arm7_dcache_clean_area
> ? ? ? ? ? ? ? ?.word ? cpu_arm7_switch_mm
> ? ? ? ? ? ? ? ?.word ? cpu_arm7_set_pte_ext
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> ? ? ? ? ? ? ? ?.size ? arm7_processor_functions, . - arm7_processor_functions
>
> ? ? ? ? ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S
> index c285395..665266d 100644
> --- a/arch/arm/mm/proc-arm720.S
> +++ b/arch/arm/mm/proc-arm720.S
> @@ -185,6 +185,9 @@ ENTRY(arm720_processor_functions)
> ? ? ? ? ? ? ? ?.word ? cpu_arm720_dcache_clean_area
> ? ? ? ? ? ? ? ?.word ? cpu_arm720_switch_mm
> ? ? ? ? ? ? ? ?.word ? cpu_arm720_set_pte_ext
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> ? ? ? ? ? ? ? ?.size ? arm720_processor_functions, . - arm720_processor_functions
>
> ? ? ? ? ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm740.S b/arch/arm/mm/proc-arm740.S
> index 38b27dc..6f9d12e 100644
> --- a/arch/arm/mm/proc-arm740.S
> +++ b/arch/arm/mm/proc-arm740.S
> @@ -130,6 +130,9 @@ ENTRY(arm740_processor_functions)
> ? ? ? ?.word ? cpu_arm740_dcache_clean_area
> ? ? ? ?.word ? cpu_arm740_switch_mm
> ? ? ? ?.word ? 0 ? ? ? ? ? ? ? ? ? ? ? @ cpu_*_set_pte
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm740_processor_functions, . - arm740_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S
> index 0c9786d..e4c165c 100644
> --- a/arch/arm/mm/proc-arm7tdmi.S
> +++ b/arch/arm/mm/proc-arm7tdmi.S
> @@ -70,6 +70,9 @@ ENTRY(arm7tdmi_processor_functions)
> ? ? ? ? ? ? ? ?.word ? cpu_arm7tdmi_dcache_clean_area
> ? ? ? ? ? ? ? ?.word ? cpu_arm7tdmi_switch_mm
> ? ? ? ? ? ? ? ?.word ? 0 ? ? ? ? ? ? ? @ cpu_*_set_pte
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> ? ? ? ? ? ? ? ?.size ? arm7tdmi_processor_functions, . - arm7tdmi_processor_functions
>
> ? ? ? ? ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S
> index 6109f27..b2705de 100644
> --- a/arch/arm/mm/proc-arm920.S
> +++ b/arch/arm/mm/proc-arm920.S
> @@ -387,6 +387,40 @@ ENTRY(cpu_arm920_set_pte_ext)
> ?#endif
> ? ? ? ?mov ? ? pc, lr
>
> +/* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */
> +.globl arm920_suspend_size
> +.equ ? arm920_suspend_size, 4 * 3
> +#ifdef CONFIG_PM
> +ENTRY(arm920_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r7, lr}
> + ? ? ? mrc ? ? p15, 0, r4, c13, c0, 0 ?@ PID
> + ? ? ? mrc ? ? p15, 0, r5, c3, c0, 0 ? @ Domain ID
> + ? ? ? mrc ? ? p15, 0, r6, c2, c0, 0 ? @ TTB address
> + ? ? ? mrc ? ? p15, 0, r7, c1, c0, 0 ? @ Control register
> + ? ? ? stmia ? r0, {r4 - r7}
> + ? ? ? ldmfd ? sp!, {r4 - r7, pc}
> +ENDPROC(arm920_do_suspend)
> +
> +ENTRY(arm920_do_resume)
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c8, c7, 0 ? @ invalidate I+D TLBs
> + ? ? ? mcr ? ? p15, 0, ip, c7, c7, 0 ? @ invalidate I+D caches
> + ? ? ? ldmia ? r0, {r4 - r7}
> + ? ? ? mcr ? ? p15, 0, r4, c13, c0, 0 ?@ PID
> + ? ? ? mcr ? ? p15, 0, r5, c3, c0, 0 ? @ Domain ID
> + ? ? ? mcr ? ? p15, 0, r6, c2, c0, 0 ? @ TTB address
> + ? ? ? mov ? ? r0, r7 ? ? ? ? ? ? ? ? ?@ control register
> + ? ? ? mov ? ? r2, r6, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, =PMD_TYPE_SECT | PMD_SECT_BUFFERABLE | \
> + ? ? ? ? ? ? ? ? ? ?PMD_SECT_CACHEABLE | PMD_BIT4 | PMD_SECT_AP_WRITE
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(arm920_do_resume)
> +#else
> +#define arm920_do_suspend ? ? ?0
> +#define arm920_do_resume ? ? ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ? ? ? ?.type ? __arm920_setup, #function
> @@ -432,6 +466,9 @@ arm920_processor_functions:
> ? ? ? ?.word ? cpu_arm920_dcache_clean_area
> ? ? ? ?.word ? cpu_arm920_switch_mm
> ? ? ? ?.word ? cpu_arm920_set_pte_ext
> + ? ? ? .word ? arm920_suspend_size
> + ? ? ? .word ? arm920_do_suspend
> + ? ? ? .word ? arm920_do_resume
> ? ? ? ?.size ? arm920_processor_functions, . - arm920_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S
> index bb2f0f4..36154b1 100644
> --- a/arch/arm/mm/proc-arm922.S
> +++ b/arch/arm/mm/proc-arm922.S
> @@ -436,6 +436,9 @@ arm922_processor_functions:
> ? ? ? ?.word ? cpu_arm922_dcache_clean_area
> ? ? ? ?.word ? cpu_arm922_switch_mm
> ? ? ? ?.word ? cpu_arm922_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm922_processor_functions, . - arm922_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S
> index c13e01a..89c5e00 100644
> --- a/arch/arm/mm/proc-arm925.S
> +++ b/arch/arm/mm/proc-arm925.S
> @@ -503,6 +503,9 @@ arm925_processor_functions:
> ? ? ? ?.word ? cpu_arm925_dcache_clean_area
> ? ? ? ?.word ? cpu_arm925_switch_mm
> ? ? ? ?.word ? cpu_arm925_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm925_processor_functions, . - arm925_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S
> index 42eb431..3beb784 100644
> --- a/arch/arm/mm/proc-arm926.S
> +++ b/arch/arm/mm/proc-arm926.S
> @@ -401,6 +401,40 @@ ENTRY(cpu_arm926_set_pte_ext)
> ?#endif
> ? ? ? ?mov ? ? pc, lr
>
> +/* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */
> +.globl arm926_suspend_size
> +.equ ? arm926_suspend_size, 4 * 3
> +#ifdef CONFIG_PM
> +ENTRY(arm926_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r7, lr}
> + ? ? ? mrc ? ? p15, 0, r4, c13, c0, 0 ?@ PID
> + ? ? ? mrc ? ? p15, 0, r5, c3, c0, 0 ? @ Domain ID
> + ? ? ? mrc ? ? p15, 0, r6, c2, c0, 0 ? @ TTB address
> + ? ? ? mrc ? ? p15, 0, r7, c1, c0, 0 ? @ Control register
> + ? ? ? stmia ? r0, {r4 - r7}
> + ? ? ? ldmfd ? sp!, {r4 - r7, pc}
> +ENDPROC(arm926_do_suspend)
> +
> +ENTRY(arm926_do_resume)
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c8, c7, 0 ? @ invalidate I+D TLBs
> + ? ? ? mcr ? ? p15, 0, ip, c7, c7, 0 ? @ invalidate I+D caches
> + ? ? ? ldmia ? r0, {r4 - r7}
> + ? ? ? mcr ? ? p15, 0, r4, c13, c0, 0 ?@ PID
> + ? ? ? mcr ? ? p15, 0, r5, c3, c0, 0 ? @ Domain ID
> + ? ? ? mcr ? ? p15, 0, r6, c2, c0, 0 ? @ TTB address
> + ? ? ? mov ? ? r0, r7 ? ? ? ? ? ? ? ? ?@ control register
> + ? ? ? mov ? ? r2, r6, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, =PMD_TYPE_SECT | PMD_SECT_BUFFERABLE | \
> + ? ? ? ? ? ? ? ? ? ?PMD_SECT_CACHEABLE | PMD_BIT4 | PMD_SECT_AP_WRITE
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(arm926_do_resume)
> +#else
> +#define arm926_do_suspend ? ? ?0
> +#define arm926_do_resume ? ? ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ? ? ? ?.type ? __arm926_setup, #function
> @@ -456,6 +490,9 @@ arm926_processor_functions:
> ? ? ? ?.word ? cpu_arm926_dcache_clean_area
> ? ? ? ?.word ? cpu_arm926_switch_mm
> ? ? ? ?.word ? cpu_arm926_set_pte_ext
> + ? ? ? .word ? arm926_suspend_size
> + ? ? ? .word ? arm926_do_suspend
> + ? ? ? .word ? arm926_do_resume
> ? ? ? ?.size ? arm926_processor_functions, . - arm926_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S
> index 7b11cdb..26aea3f 100644
> --- a/arch/arm/mm/proc-arm940.S
> +++ b/arch/arm/mm/proc-arm940.S
> @@ -363,6 +363,9 @@ ENTRY(arm940_processor_functions)
> ? ? ? ?.word ? cpu_arm940_dcache_clean_area
> ? ? ? ?.word ? cpu_arm940_switch_mm
> ? ? ? ?.word ? 0 ? ? ? ? ? ? ? @ cpu_*_set_pte
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm940_processor_functions, . - arm940_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S
> index 1a5bbf0..8063345 100644
> --- a/arch/arm/mm/proc-arm946.S
> +++ b/arch/arm/mm/proc-arm946.S
> @@ -419,6 +419,9 @@ ENTRY(arm946_processor_functions)
> ? ? ? ?.word ? cpu_arm946_dcache_clean_area
> ? ? ? ?.word ? cpu_arm946_switch_mm
> ? ? ? ?.word ? 0 ? ? ? ? ? ? ? @ cpu_*_set_pte
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? arm946_processor_functions, . - arm946_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S
> index db67e31..7b7ebd4 100644
> --- a/arch/arm/mm/proc-arm9tdmi.S
> +++ b/arch/arm/mm/proc-arm9tdmi.S
> @@ -70,6 +70,9 @@ ENTRY(arm9tdmi_processor_functions)
> ? ? ? ? ? ? ? ?.word ? cpu_arm9tdmi_dcache_clean_area
> ? ? ? ? ? ? ? ?.word ? cpu_arm9tdmi_switch_mm
> ? ? ? ? ? ? ? ?.word ? 0 ? ? ? ? ? ? ? @ cpu_*_set_pte
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> + ? ? ? ? ? ? ? .word ? 0
> ? ? ? ? ? ? ? ?.size ? arm9tdmi_processor_functions, . - arm9tdmi_processor_functions
>
> ? ? ? ? ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S
> index 7c9ad62..fc2a4ae 100644
> --- a/arch/arm/mm/proc-fa526.S
> +++ b/arch/arm/mm/proc-fa526.S
> @@ -195,6 +195,9 @@ fa526_processor_functions:
> ? ? ? ?.word ? cpu_fa526_dcache_clean_area
> ? ? ? ?.word ? cpu_fa526_switch_mm
> ? ? ? ?.word ? cpu_fa526_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? fa526_processor_functions, . - fa526_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S
> index b4597ed..d3883ee 100644
> --- a/arch/arm/mm/proc-feroceon.S
> +++ b/arch/arm/mm/proc-feroceon.S
> @@ -554,6 +554,9 @@ feroceon_processor_functions:
> ? ? ? ?.word ? cpu_feroceon_dcache_clean_area
> ? ? ? ?.word ? cpu_feroceon_switch_mm
> ? ? ? ?.word ? cpu_feroceon_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? feroceon_processor_functions, . - feroceon_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S
> index 4458ee6..9d4f2ae 100644
> --- a/arch/arm/mm/proc-mohawk.S
> +++ b/arch/arm/mm/proc-mohawk.S
> @@ -388,6 +388,9 @@ mohawk_processor_functions:
> ? ? ? ?.word ? cpu_mohawk_dcache_clean_area
> ? ? ? ?.word ? cpu_mohawk_switch_mm
> ? ? ? ?.word ? cpu_mohawk_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? mohawk_processor_functions, . - mohawk_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S
> index 5aa8d59..46f09ed 100644
> --- a/arch/arm/mm/proc-sa110.S
> +++ b/arch/arm/mm/proc-sa110.S
> @@ -203,6 +203,9 @@ ENTRY(sa110_processor_functions)
> ? ? ? ?.word ? cpu_sa110_dcache_clean_area
> ? ? ? ?.word ? cpu_sa110_switch_mm
> ? ? ? ?.word ? cpu_sa110_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? sa110_processor_functions, . - sa110_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S
> index 2ac4e6f..74483d1 100644
> --- a/arch/arm/mm/proc-sa1100.S
> +++ b/arch/arm/mm/proc-sa1100.S
> @@ -169,6 +169,42 @@ ENTRY(cpu_sa1100_set_pte_ext)
> ?#endif
> ? ? ? ?mov ? ? pc, lr
>
> +.globl cpu_sa1100_suspend_size
> +.equ ? cpu_sa1100_suspend_size, 4*4
> +#ifdef CONFIG_PM
> +ENTRY(cpu_sa1100_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r7, lr}
> + ? ? ? mrc ? ? p15, 0, r4, c3, c0, 0 ? ? ? ? ? @ domain ID
> + ? ? ? mrc ? ? p15, 0, r5, c2, c0, 0 ? ? ? ? ? @ translation table base addr
> + ? ? ? mrc ? ? p15, 0, r6, c13, c0, 0 ? ? ? ? ?@ PID
> + ? ? ? mrc ? ? p15, 0, r7, c1, c0, 0 ? ? ? ? ? @ control reg
> + ? ? ? stmia ? r0, {r4 - r7} ? ? ? ? ? ? ? ? ? @ store cp regs
> + ? ? ? ldmfd ? sp!, {r4 - r7, pc}
> +ENDPROC(cpu_sa1100_do_suspend)
> +
> +ENTRY(cpu_sa1100_do_resume)
> + ? ? ? ldmia ? r0, {r4 - r7} ? ? ? ? ? ? ? ? ? @ load cp regs
> + ? ? ? mov ? ? r1, #0
> + ? ? ? mcr ? ? p15, 0, r1, c8, c7, 0 ? ? ? ? ? @ flush I+D TLBs
> + ? ? ? mcr ? ? p15, 0, r1, c7, c7, 0 ? ? ? ? ? @ flush I&D cache
> + ? ? ? mcr ? ? p15, 0, r1, c9, c0, 0 ? ? ? ? ? @ invalidate RB
> + ? ? ? mcr ? ? p15, 0, r1, c9, c0, 5 ? ? ? ? ? @ allow user space to use RB
> +
> + ? ? ? mcr ? ? p15, 0, r4, c3, c0, 0 ? ? ? ? ? @ domain ID
> + ? ? ? mcr ? ? p15, 0, r5, c2, c0, 0 ? ? ? ? ? @ translation table base addr
> + ? ? ? mcr ? ? p15, 0, r6, c13, c0, 0 ? ? ? ? ?@ PID
> + ? ? ? mov ? ? r0, r7 ? ? ? ? ? ? ? ? ? ? ? ? ?@ control register
> + ? ? ? mov ? ? r2, r5, lsr #14 ? ? ? ? ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, =PMD_TYPE_SECT | PMD_SECT_BUFFERABLE | \
> + ? ? ? ? ? ? ? ? ? ?PMD_SECT_CACHEABLE | PMD_SECT_AP_WRITE
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(cpu_sa1100_do_resume)
> +#else
> +#define cpu_sa1100_do_suspend ?0
> +#define cpu_sa1100_do_resume ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ? ? ? ?.type ? __sa1100_setup, #function
> @@ -218,6 +254,9 @@ ENTRY(sa1100_processor_functions)
> ? ? ? ?.word ? cpu_sa1100_dcache_clean_area
> ? ? ? ?.word ? cpu_sa1100_switch_mm
> ? ? ? ?.word ? cpu_sa1100_set_pte_ext
> + ? ? ? .word ? cpu_sa1100_suspend_size
> + ? ? ? .word ? cpu_sa1100_do_suspend
> + ? ? ? .word ? cpu_sa1100_do_resume
> ? ? ? ?.size ? sa1100_processor_functions, . - sa1100_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
> index 59a7e1f..832b6bd 100644
> --- a/arch/arm/mm/proc-v6.S
> +++ b/arch/arm/mm/proc-v6.S
> @@ -121,6 +121,53 @@ ENTRY(cpu_v6_set_pte_ext)
> ?#endif
> ? ? ? ?mov ? ? pc, lr
>
> +/* Suspend/resume support: taken from arch/arm/mach-s3c64xx/sleep.S */
> +.globl cpu_v6_suspend_size
> +.equ ? cpu_v6_suspend_size, 4 * 8
> +#ifdef CONFIG_PM
> +ENTRY(cpu_v6_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r11, lr}
> + ? ? ? mrc ? ? p15, 0, r4, c13, c0, 0 ?@ FCSE/PID
> + ? ? ? mrc ? ? p15, 0, r5, c13, c0, 1 ?@ Context ID
> + ? ? ? mrc ? ? p15, 0, r6, c3, c0, 0 ? @ Domain ID
> + ? ? ? mrc ? ? p15, 0, r7, c2, c0, 0 ? @ Translation table base 0
> + ? ? ? mrc ? ? p15, 0, r8, c2, c0, 1 ? @ Translation table base 1
> + ? ? ? mrc ? ? p15, 0, r9, c1, c0, 1 ? @ auxillary control register
> + ? ? ? mrc ? ? p15, 0, r10, c1, c0, 2 ?@ co-processor access control
> + ? ? ? mrc ? ? p15, 0, r11, c1, c0, 0 ?@ control register
> + ? ? ? stmia ? r0, {r4 - r11}
> + ? ? ? ldmfd ? sp!, {r4- r11, pc}
> +ENDPROC(cpu_v6_do_suspend)
> +
> +ENTRY(cpu_v6_do_resume)
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c7, c14, 0 ?@ clean+invalidate D cache
> + ? ? ? mcr ? ? p15, 0, ip, c7, c5, 0 ? @ invalidate I cache
> + ? ? ? mcr ? ? p15, 0, ip, c7, c15, 0 ?@ clean+invalidate cache
> + ? ? ? mcr ? ? p15, 0, ip, c7, c10, 4 ?@ drain write buffer
> + ? ? ? ldmia ? r0, {r4 - r11}
> + ? ? ? mcr ? ? p15, 0, r4, c13, c0, 0 ?@ FCSE/PID
> + ? ? ? mcr ? ? p15, 0, r5, c13, c0, 1 ?@ Context ID
> + ? ? ? mcr ? ? p15, 0, r6, c3, c0, 0 ? @ Domain ID
> + ? ? ? mcr ? ? p15, 0, r7, c2, c0, 0 ? @ Translation table base 0
> + ? ? ? mcr ? ? p15, 0, r8, c2, c0, 1 ? @ Translation table base 1
> + ? ? ? mcr ? ? p15, 0, r9, c1, c0, 1 ? @ auxillary control register
> + ? ? ? mcr ? ? p15, 0, r10, c1, c0, 2 ?@ co-processor access control
> + ? ? ? mcr ? ? p15, 0, ip, c2, c0, 2 ? @ TTB control register
> + ? ? ? mcr ? ? p15, 0, ip, c7, c5, 4 ? @ ISB
> + ? ? ? mov ? ? r0, r11 ? ? ? ? ? ? ? ? @ control register
> + ? ? ? mov ? ? r2, r7, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, cpu_resume_l1_flags
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(cpu_v6_do_resume)
> +cpu_resume_l1_flags:
> + ? ? ? ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_SMP)
> + ? ? ? ALT_UP(.long ?PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_UP)
> +#else
> +#define cpu_v6_do_suspend 0
> +#define cpu_v6_do_resume 0
> +#endif
>
>
> ? ? ? ?.type ? cpu_v6_name, #object
> @@ -206,6 +253,9 @@ ENTRY(v6_processor_functions)
> ? ? ? ?.word ? cpu_v6_dcache_clean_area
> ? ? ? ?.word ? cpu_v6_switch_mm
> ? ? ? ?.word ? cpu_v6_set_pte_ext
> + ? ? ? .word ? cpu_v6_suspend_size
> + ? ? ? .word ? cpu_v6_do_suspend
> + ? ? ? .word ? cpu_v6_do_resume
> ? ? ? ?.size ? v6_processor_functions, . - v6_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
> index 0c1172b..a5187dd 100644
> --- a/arch/arm/mm/proc-v7.S
> +++ b/arch/arm/mm/proc-v7.S
> @@ -171,6 +171,87 @@ cpu_v7_name:
> ? ? ? ?.ascii ?"ARMv7 Processor"
> ? ? ? ?.align
>
> + ? ? ? /*
> + ? ? ? ?* Memory region attributes with SCTLR.TRE=1
> + ? ? ? ?*
> + ? ? ? ?* ? n = TEX[0],C,B
> + ? ? ? ?* ? TR = PRRR[2n+1:2n] ? ? ? ? - memory type
> + ? ? ? ?* ? IR = NMRR[2n+1:2n] ? ? ? ? - inner cacheable property
> + ? ? ? ?* ? OR = NMRR[2n+17:2n+16] ? ? - outer cacheable property
> + ? ? ? ?*
> + ? ? ? ?* ? ? ? ? ? ? ? ? ? ? ?n ? ? ? TR ? ? ?IR ? ? ?OR
> + ? ? ? ?* ? UNCACHED ? ? ? ? ? 000 ? ? 00
> + ? ? ? ?* ? BUFFERABLE ? ? ? ? 001 ? ? 10 ? ? ?00 ? ? ?00
> + ? ? ? ?* ? WRITETHROUGH ? ? ? 010 ? ? 10 ? ? ?10 ? ? ?10
> + ? ? ? ?* ? WRITEBACK ? ? ? ? ?011 ? ? 10 ? ? ?11 ? ? ?11
> + ? ? ? ?* ? reserved ? ? ? ? ? 110
> + ? ? ? ?* ? WRITEALLOC ? ? ? ? 111 ? ? 10 ? ? ?01 ? ? ?01
> + ? ? ? ?* ? DEV_SHARED ? ? ? ? 100 ? ? 01
> + ? ? ? ?* ? DEV_NONSHARED ? ? ?100 ? ? 01
> + ? ? ? ?* ? DEV_WC ? ? ? ? ? ? 001 ? ? 10
> + ? ? ? ?* ? DEV_CACHED ? ? ? ? 011 ? ? 10
> + ? ? ? ?*
> + ? ? ? ?* Other attributes:
> + ? ? ? ?*
> + ? ? ? ?* ? DS0 = PRRR[16] = 0 ? ? ? ? - device shareable property
> + ? ? ? ?* ? DS1 = PRRR[17] = 1 ? ? ? ? - device shareable property
> + ? ? ? ?* ? NS0 = PRRR[18] = 0 ? ? ? ? - normal shareable property
> + ? ? ? ?* ? NS1 = PRRR[19] = 1 ? ? ? ? - normal shareable property
> + ? ? ? ?* ? NOS = PRRR[24+n] = 1 ? ? ? - not outer shareable
> + ? ? ? ?*/
> +.equ ? PRRR, ? 0xff0a81a8
> +.equ ? NMRR, ? 0x40e040e0
> +
> +/* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */
> +.globl cpu_v7_suspend_size
> +.equ ? cpu_v7_suspend_size, 4 * 8
> +#ifdef CONFIG_PM
> +ENTRY(cpu_v7_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r11, lr}
> + ? ? ? mrc ? ? p15, 0, r4, c13, c0, 0 ?@ FCSE/PID
> + ? ? ? mrc ? ? p15, 0, r5, c13, c0, 1 ?@ Context ID
> + ? ? ? mrc ? ? p15, 0, r6, c3, c0, 0 ? @ Domain ID
> + ? ? ? mrc ? ? p15, 0, r7, c2, c0, 0 ? @ TTB 0
> + ? ? ? mrc ? ? p15, 0, r8, c2, c0, 1 ? @ TTB 1
> + ? ? ? mrc ? ? p15, 0, r9, c1, c0, 0 ? @ Control register
> + ? ? ? mrc ? ? p15, 0, r10, c1, c0, 1 ?@ Auxiliary control register
> + ? ? ? mrc ? ? p15, 0, r11, c1, c0, 2 ?@ Co-processor access control
> + ? ? ? stmia ? r0, {r4 - r11}
> + ? ? ? ldmfd ? sp!, {r4 - r11, pc}
> +ENDPROC(cpu_v7_do_suspend)
> +
> +ENTRY(cpu_v7_do_resume)
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c8, c7, 0 ? @ invalidate TLBs
> + ? ? ? mcr ? ? p15, 0, ip, c7, c5, 0 ? @ invalidate I cache
> + ? ? ? ldmia ? r0, {r4 - r11}
> + ? ? ? mcr ? ? p15, 0, r4, c13, c0, 0 ?@ FCSE/PID
> + ? ? ? mcr ? ? p15, 0, r5, c13, c0, 1 ?@ Context ID
> + ? ? ? mcr ? ? p15, 0, r6, c3, c0, 0 ? @ Domain ID
> + ? ? ? mcr ? ? p15, 0, r7, c2, c0, 0 ? @ TTB 0
> + ? ? ? mcr ? ? p15, 0, r8, c2, c0, 1 ? @ TTB 1
> + ? ? ? mcr ? ? p15, 0, ip, c2, c0, 2 ? @ TTB control register
> + ? ? ? mcr ? ? p15, 0, r10, c1, c0, 1 ?@ Auxillary control register
> + ? ? ? mcr ? ? p15, 0, r11, c1, c0, 2 ?@ Co-processor access control
> + ? ? ? ldr ? ? r4, =PRRR ? ? ? ? ? ? ? @ PRRR
> + ? ? ? ldr ? ? r5, =NMRR ? ? ? ? ? ? ? @ NMRR
> + ? ? ? mcr ? ? p15, 0, r4, c10, c2, 0 ?@ write PRRR
> + ? ? ? mcr ? ? p15, 0, r5, c10, c2, 1 ?@ write NMRR
> + ? ? ? isb
> + ? ? ? mov ? ? r0, r9 ? ? ? ? ? ? ? ? ?@ control register
> + ? ? ? mov ? ? r2, r7, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, cpu_resume_l1_flags
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(cpu_v7_do_resume)
> +cpu_resume_l1_flags:
> + ? ? ? ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_SMP)
> + ? ? ? ALT_UP(.long ?PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_UP)
> +#else
> +#define cpu_v7_do_suspend ? ? ?0
> +#define cpu_v7_do_resume ? ? ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ?/*
> @@ -276,36 +357,8 @@ __v7_setup:
> ? ? ? ?ALT_SMP(orr ? ? r4, r4, #TTB_FLAGS_SMP)
> ? ? ? ?ALT_UP(orr ? ? ?r4, r4, #TTB_FLAGS_UP)
> ? ? ? ?mcr ? ? p15, 0, r4, c2, c0, 1 ? ? ? ? ? @ load TTB1
> - ? ? ? /*
> - ? ? ? ?* Memory region attributes with SCTLR.TRE=1
> - ? ? ? ?*
> - ? ? ? ?* ? n = TEX[0],C,B
> - ? ? ? ?* ? TR = PRRR[2n+1:2n] ? ? ? ? - memory type
> - ? ? ? ?* ? IR = NMRR[2n+1:2n] ? ? ? ? - inner cacheable property
> - ? ? ? ?* ? OR = NMRR[2n+17:2n+16] ? ? - outer cacheable property
> - ? ? ? ?*
> - ? ? ? ?* ? ? ? ? ? ? ? ? ? ? ?n ? ? ? TR ? ? ?IR ? ? ?OR
> - ? ? ? ?* ? UNCACHED ? ? ? ? ? 000 ? ? 00
> - ? ? ? ?* ? BUFFERABLE ? ? ? ? 001 ? ? 10 ? ? ?00 ? ? ?00
> - ? ? ? ?* ? WRITETHROUGH ? ? ? 010 ? ? 10 ? ? ?10 ? ? ?10
> - ? ? ? ?* ? WRITEBACK ? ? ? ? ?011 ? ? 10 ? ? ?11 ? ? ?11
> - ? ? ? ?* ? reserved ? ? ? ? ? 110
> - ? ? ? ?* ? WRITEALLOC ? ? ? ? 111 ? ? 10 ? ? ?01 ? ? ?01
> - ? ? ? ?* ? DEV_SHARED ? ? ? ? 100 ? ? 01
> - ? ? ? ?* ? DEV_NONSHARED ? ? ?100 ? ? 01
> - ? ? ? ?* ? DEV_WC ? ? ? ? ? ? 001 ? ? 10
> - ? ? ? ?* ? DEV_CACHED ? ? ? ? 011 ? ? 10
> - ? ? ? ?*
> - ? ? ? ?* Other attributes:
> - ? ? ? ?*
> - ? ? ? ?* ? DS0 = PRRR[16] = 0 ? ? ? ? - device shareable property
> - ? ? ? ?* ? DS1 = PRRR[17] = 1 ? ? ? ? - device shareable property
> - ? ? ? ?* ? NS0 = PRRR[18] = 0 ? ? ? ? - normal shareable property
> - ? ? ? ?* ? NS1 = PRRR[19] = 1 ? ? ? ? - normal shareable property
> - ? ? ? ?* ? NOS = PRRR[24+n] = 1 ? ? ? - not outer shareable
> - ? ? ? ?*/
> - ? ? ? ldr ? ? r5, =0xff0a81a8 ? ? ? ? ? ? ? ? @ PRRR
> - ? ? ? ldr ? ? r6, =0x40e040e0 ? ? ? ? ? ? ? ? @ NMRR
> + ? ? ? ldr ? ? r5, =PRRR ? ? ? ? ? ? ? ? ? ? ? @ PRRR
> + ? ? ? ldr ? ? r6, =NMRR ? ? ? ? ? ? ? ? ? ? ? @ NMRR
> ? ? ? ?mcr ? ? p15, 0, r5, c10, c2, 0 ? ? ? ? ?@ write PRRR
> ? ? ? ?mcr ? ? p15, 0, r6, c10, c2, 1 ? ? ? ? ?@ write NMRR
> ?#endif
> @@ -351,6 +404,9 @@ ENTRY(v7_processor_functions)
> ? ? ? ?.word ? cpu_v7_dcache_clean_area
> ? ? ? ?.word ? cpu_v7_switch_mm
> ? ? ? ?.word ? cpu_v7_set_pte_ext
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> + ? ? ? .word ? 0
> ? ? ? ?.size ? v7_processor_functions, . - v7_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
> index ec26355..63d8b20 100644
> --- a/arch/arm/mm/proc-xsc3.S
> +++ b/arch/arm/mm/proc-xsc3.S
> @@ -413,9 +413,52 @@ ENTRY(cpu_xsc3_set_pte_ext)
> ? ? ? ?mov ? ? pc, lr
>
> ? ? ? ?.ltorg
> -
> ? ? ? ?.align
>
> +.globl cpu_xsc3_suspend_size
> +.equ ? cpu_xsc3_suspend_size, 4 * 8
> +#ifdef CONFIG_PM
> +ENTRY(cpu_xsc3_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r10, lr}
> + ? ? ? mrc ? ? p14, 0, r4, c6, c0, 0 ? @ clock configuration, for turbo mode
> + ? ? ? mrc ? ? p15, 0, r5, c15, c1, 0 ?@ CP access reg
> + ? ? ? mrc ? ? p15, 0, r6, c13, c0, 0 ?@ PID
> + ? ? ? mrc ? ? p15, 0, r7, c3, c0, 0 ? @ domain ID
> + ? ? ? mrc ? ? p15, 0, r8, c2, c0, 0 ? @ translation table base addr
> + ? ? ? mrc ? ? p15, 0, r9, c1, c0, 1 ? @ auxiliary control reg
> + ? ? ? mrc ? ? p15, 0, r10, c1, c0, 0 ?@ control reg
> + ? ? ? bic ? ? r4, r4, #2 ? ? ? ? ? ? ?@ clear frequency change bit
> + ? ? ? stmia ? r0, {r1, r4 - r10} ? ? ?@ store v:p offset + cp regs
> + ? ? ? ldmia ? sp!, {r4 - r10, pc}
> +ENDPROC(cpu_xsc3_do_suspend)
> +
> +ENTRY(cpu_xsc3_do_resume)
> + ? ? ? ldmia ? r0, {r1, r4 - r10} ? ? ?@ load v:p offset + cp regs
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c7, c7, 0 ? @ invalidate I & D caches, BTB
> + ? ? ? mcr ? ? p15, 0, ip, c7, c10, 4 ?@ drain write (&fill) buffer
> + ? ? ? mcr ? ? p15, 0, ip, c7, c5, 4 ? @ flush prefetch buffer
> + ? ? ? mcr ? ? p15, 0, ip, c8, c7, 0 ? @ invalidate I & D TLBs
> + ? ? ? mcr ? ? p14, 0, r4, c6, c0, 0 ? @ clock configuration, turbo mode.
> + ? ? ? mcr ? ? p15, 0, r5, c15, c1, 0 ?@ CP access reg
> + ? ? ? mcr ? ? p15, 0, r6, c13, c0, 0 ?@ PID
> + ? ? ? mcr ? ? p15, 0, r7, c3, c0, 0 ? @ domain ID
> + ? ? ? mcr ? ? p15, 0, r8, c2, c0, 0 ? @ translation table base addr
> + ? ? ? mcr ? ? p15, 0, r9, c1, c0, 1 ? @ auxiliary control reg
> +
> + ? ? ? @ temporarily map resume_turn_on_mmu into the page table,
> + ? ? ? @ otherwise prefetch abort occurs after MMU is turned on
> + ? ? ? mov ? ? r0, r10 ? ? ? ? ? ? ? ? @ control register
> + ? ? ? mov ? ? r2, r8, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, =0x542e ? ? ? ? ? ? @ section flags
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(cpu_xsc3_do_resume)
> +#else
> +#define cpu_xsc3_do_suspend ? ?0
> +#define cpu_xsc3_do_resume ? ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ? ? ? ?.type ? __xsc3_setup, #function
> @@ -476,6 +519,9 @@ ENTRY(xsc3_processor_functions)
> ? ? ? ?.word ? cpu_xsc3_dcache_clean_area
> ? ? ? ?.word ? cpu_xsc3_switch_mm
> ? ? ? ?.word ? cpu_xsc3_set_pte_ext
> + ? ? ? .word ? cpu_xsc3_suspend_size
> + ? ? ? .word ? cpu_xsc3_do_suspend
> + ? ? ? .word ? cpu_xsc3_do_resume
> ? ? ? ?.size ? xsc3_processor_functions, . - xsc3_processor_functions
>
> ? ? ? ?.section ".rodata"
> diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
> index 5a37c5e..086038c 100644
> --- a/arch/arm/mm/proc-xscale.S
> +++ b/arch/arm/mm/proc-xscale.S
> @@ -513,11 +513,49 @@ ENTRY(cpu_xscale_set_pte_ext)
> ? ? ? ?xscale_set_pte_ext_epilogue
> ? ? ? ?mov ? ? pc, lr
>
> -
> ? ? ? ?.ltorg
> -
> ? ? ? ?.align
>
> +.globl cpu_xscale_suspend_size
> +.equ ? cpu_xscale_suspend_size, 4 * 7
> +#ifdef CONFIG_PM
> +ENTRY(cpu_xscale_do_suspend)
> + ? ? ? stmfd ? sp!, {r4 - r10, lr}
> + ? ? ? mrc ? ? p14, 0, r4, c6, c0, 0 ? @ clock configuration, for turbo mode
> + ? ? ? mrc ? ? p15, 0, r5, c15, c1, 0 ?@ CP access reg
> + ? ? ? mrc ? ? p15, 0, r6, c13, c0, 0 ?@ PID
> + ? ? ? mrc ? ? p15, 0, r7, c3, c0, 0 ? @ domain ID
> + ? ? ? mrc ? ? p15, 0, r8, c2, c0, 0 ? @ translation table base addr
> + ? ? ? mrc ? ? p15, 0, r9, c1, c1, 0 ? @ auxiliary control reg
> + ? ? ? mrc ? ? p15, 0, r10, c1, c0, 0 ?@ control reg
> + ? ? ? bic ? ? r4, r4, #2 ? ? ? ? ? ? ?@ clear frequency change bit
> + ? ? ? stmia ? r0, {r4 - r10} ? ? ? ? ?@ store cp regs
> + ? ? ? ldmfd ? sp!, {r4 - r10, pc}
> +ENDPROC(cpu_xscale_do_suspend)
> +
> +ENTRY(cpu_xscale_do_resume)
> + ? ? ? ldmia ? r0, {r4 - r10} ? ? ? ? ?@ load cp regs
> + ? ? ? mov ? ? ip, #0
> + ? ? ? mcr ? ? p15, 0, ip, c8, c7, 0 ? @ invalidate I & D TLBs
> + ? ? ? mcr ? ? p15, 0, ip, c7, c7, 0 ? @ invalidate I & D caches, BTB
> + ? ? ? mcr ? ? p14, 0, r4, c6, c0, 0 ? @ clock configuration, turbo mode.
> + ? ? ? mcr ? ? p15, 0, r5, c15, c1, 0 ?@ CP access reg
> + ? ? ? mcr ? ? p15, 0, r6, c13, c0, 0 ?@ PID
> + ? ? ? mcr ? ? p15, 0, r7, c3, c0, 0 ? @ domain ID
> + ? ? ? mcr ? ? p15, 0, r8, c2, c0, 0 ? @ translation table base addr
> + ? ? ? mcr ? ? p15, 0, r9, c1, c1, 0 ? @ auxiliary control reg
> + ? ? ? mov ? ? r0, r10 ? ? ? ? ? ? ? ? @ control register
> + ? ? ? mov ? ? r2, r8, lsr #14 ? ? ? ? @ get TTB0 base
> + ? ? ? mov ? ? r2, r2, lsl #14
> + ? ? ? ldr ? ? r3, =PMD_TYPE_SECT | PMD_SECT_BUFFERABLE | \
> + ? ? ? ? ? ? ? ? ? ?PMD_SECT_CACHEABLE | PMD_SECT_AP_WRITE
> + ? ? ? b ? ? ? cpu_resume_mmu
> +ENDPROC(cpu_xscale_do_resume)
> +#else
> +#define cpu_xscale_do_suspend ?0
> +#define cpu_xscale_do_resume ? 0
> +#endif
> +
> ? ? ? ?__CPUINIT
>
> ? ? ? ?.type ? __xscale_setup, #function
> @@ -565,6 +603,9 @@ ENTRY(xscale_processor_functions)
> ? ? ? ?.word ? cpu_xscale_dcache_clean_area
> ? ? ? ?.word ? cpu_xscale_switch_mm
> ? ? ? ?.word ? cpu_xscale_set_pte_ext
> + ? ? ? .word ? cpu_xscale_suspend_size
> + ? ? ? .word ? cpu_xscale_do_suspend
> + ? ? ? .word ? cpu_xscale_do_resume
> ? ? ? ?.size ? xscale_processor_functions, . - xscale_processor_functions
>
> ? ? ? ?.section ".rodata"
> --
> 1.6.2.5
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
Acked-by: Colin Cross <ccross@android.com>
Tested with idle and suspend on Tegra 2.
next prev parent reply other threads:[~2011-02-12 2:50 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-11 16:16 [PATCH] Generic CPU save/restore PM support Russell King - ARM Linux
2011-02-11 16:17 ` [PATCH 1/6] ARM: move cache/processor/fault glue to separate include files Russell King - ARM Linux
2011-02-12 2:52 ` Colin Cross
2011-02-12 9:48 ` Russell King - ARM Linux
2011-02-11 16:17 ` [PATCH 2/6] ARM: pm: add generic CPU suspend/resume support Russell King - ARM Linux
2011-02-12 2:50 ` Colin Cross [this message]
2011-02-15 11:04 ` Russell King - ARM Linux
2011-02-16 0:26 ` Colin Cross
2011-02-17 10:41 ` Lorenzo Pieralisi
2011-02-17 13:59 ` Russell King - ARM Linux
2011-02-17 20:05 ` Colin Cross
2011-02-17 23:36 ` Russell King - ARM Linux
2011-02-20 12:00 ` Russell King - ARM Linux
2011-02-21 9:58 ` Kukjin Kim
2011-02-15 1:21 ` Colin Cross
2011-02-15 4:11 ` Colin Cross
2011-02-15 10:50 ` Russell King - ARM Linux
2011-02-15 18:20 ` Colin Cross
2011-02-11 16:18 ` [PATCH 3/6] ARM: pm: convert PXA to generic " Russell King - ARM Linux
2011-02-11 16:18 ` [PATCH 4/6] ARM: pm: convert sa11x0 " Russell King - ARM Linux
2011-02-11 16:18 ` [PATCH 5/6] ARM: pm: convert samsung platforms " Russell King - ARM Linux
2011-02-17 12:09 ` Kukjin Kim
2011-02-17 14:06 ` Russell King - ARM Linux
2011-02-17 23:05 ` Kukjin Kim
2011-02-17 23:29 ` Russell King - ARM Linux
2011-02-17 23:46 ` Kukjin Kim
2011-02-17 23:58 ` SAMSUNG: any example code for soc_camera, tv output, etc...? Nick Pelling
2011-02-22 14:00 ` 余谨智
[not found] ` <AANLkTin0PR3VQLruade+w6GbCMoW9pXy4Kvn-sBZ+LBM@mail.gmail.c om>
2011-02-22 22:54 ` Nick Pelling
2011-02-23 11:03 ` Sylwester Nawrocki
2011-02-11 16:19 ` [PATCH 6/6] ARM: pm: allow generic sleep code to be used with SMP CPU idle Russell King - ARM Linux
2011-02-12 2:52 ` Colin Cross
2011-02-13 21:59 ` Colin Cross
2011-02-14 16:01 ` Russell King - ARM Linux
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