mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 07:24:39 +08:00
f6b0fa02e8
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. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Tested-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
|
|
* arch/arm/include/asm/proc-fns.h
|
|
*
|
|
* Copyright (C) 1997-1999 Russell King
|
|
* Copyright (C) 2000 Deep Blue Solutions Ltd
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef __ASM_PROCFNS_H
|
|
#define __ASM_PROCFNS_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/glue-proc.h>
|
|
#include <asm/page.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct mm_struct;
|
|
|
|
/*
|
|
* Don't change this structure - ASM code relies on it.
|
|
*/
|
|
extern struct processor {
|
|
/* MISC
|
|
* get data abort address/flags
|
|
*/
|
|
void (*_data_abort)(unsigned long pc);
|
|
/*
|
|
* Retrieve prefetch fault address
|
|
*/
|
|
unsigned long (*_prefetch_abort)(unsigned long lr);
|
|
/*
|
|
* Set up any processor specifics
|
|
*/
|
|
void (*_proc_init)(void);
|
|
/*
|
|
* Disable any processor specifics
|
|
*/
|
|
void (*_proc_fin)(void);
|
|
/*
|
|
* Special stuff for a reset
|
|
*/
|
|
void (*reset)(unsigned long addr) __attribute__((noreturn));
|
|
/*
|
|
* Idle the processor
|
|
*/
|
|
int (*_do_idle)(void);
|
|
/*
|
|
* Processor architecture specific
|
|
*/
|
|
/*
|
|
* clean a virtual address range from the
|
|
* D-cache without flushing the cache.
|
|
*/
|
|
void (*dcache_clean_area)(void *addr, int size);
|
|
|
|
/*
|
|
* Set the page table
|
|
*/
|
|
void (*switch_mm)(unsigned long pgd_phys, struct mm_struct *mm);
|
|
/*
|
|
* Set a possibly extended PTE. Non-extended PTEs should
|
|
* 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
|
|
extern void cpu_proc_init(void);
|
|
extern void cpu_proc_fin(void);
|
|
extern int cpu_do_idle(void);
|
|
extern void cpu_dcache_clean_area(void *, int);
|
|
extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm);
|
|
extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
|
|
extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
|
|
#else
|
|
#define cpu_proc_init() processor._proc_init()
|
|
#define cpu_proc_fin() processor._proc_fin()
|
|
#define cpu_reset(addr) processor.reset(addr)
|
|
#define cpu_do_idle() processor._do_idle()
|
|
#define cpu_dcache_clean_area(addr,sz) processor.dcache_clean_area(addr,sz)
|
|
#define cpu_set_pte_ext(ptep,pte,ext) processor.set_pte_ext(ptep,pte,ext)
|
|
#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
|
|
|
|
#define cpu_switch_mm(pgd,mm) cpu_do_switch_mm(virt_to_phys(pgd),mm)
|
|
|
|
#define cpu_get_pgd() \
|
|
({ \
|
|
unsigned long pg; \
|
|
__asm__("mrc p15, 0, %0, c2, c0, 0" \
|
|
: "=r" (pg) : : "cc"); \
|
|
pg &= ~0x3fff; \
|
|
(pgd_t *)phys_to_virt(pg); \
|
|
})
|
|
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_PROCFNS_H */
|