[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / include / asm / proc-fns.h

/*
 *  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'.
	 */
#ifdef CONFIG_ARM_LPAE
	void (*set_pte_ext)(pte_t *ptep, pte_t pte);
#else
	void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext);
#endif

	/* 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);
#ifdef CONFIG_ARM_LPAE
extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte);
#else
extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
#endif
extern void cpu_reset(unsigned long addr) __attribute__((noreturn));

/* These three are private to arch/arm/kernel/suspend.c */
extern void cpu_do_suspend(void *);
extern void cpu_do_resume(void *);
#else
#define cpu_proc_init			processor._proc_init
#define cpu_proc_fin			processor._proc_fin
#define cpu_reset			processor.reset
#define cpu_do_idle			processor._do_idle
#define cpu_dcache_clean_area		processor.dcache_clean_area
#define cpu_set_pte_ext			processor.set_pte_ext
#define cpu_do_switch_mm		processor.switch_mm

/* These three are private to arch/arm/kernel/suspend.c */
#define cpu_do_suspend			processor.do_suspend
#define cpu_do_resume			processor.do_resume
#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)

#ifdef CONFIG_ARM_LPAE
#define cpu_get_pgd()	\
	({						\
		unsigned long pg, pg2;			\
		__asm__("mrrc	p15, 0, %0, %1, c2"	\
			: "=r" (pg), "=r" (pg2)		\
			:				\
			: "cc");			\
		pg &= ~(PTRS_PER_PGD*sizeof(pgd_t)-1);	\
		(pgd_t *)phys_to_virt(pg);		\
	})
#else
#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

#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* __ASM_PROCFNS_H */
Commit	Line	Data
1da177e4	1	/*
4baa9922	2	* arch/arm/include/asm/proc-fns.h
1da177e4 LT	3	*
	4	* Copyright (C) 1997-1999 Russell King
	5	* Copyright (C) 2000 Deep Blue Solutions Ltd
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11	#ifndef __ASM_PROCFNS_H
	12	#define __ASM_PROCFNS_H
	13
	14	#ifdef __KERNEL__
	15
753790e7 RK	16	#include <asm/glue-proc.h>
753790e7 RK	17	#include <asm/page.h>
1da177e4	18
753790e7 RK	19	#ifndef __ASSEMBLY__
	20
	21	struct mm_struct;
1da177e4 LT	22
1da177e4 LT	23	/*
753790e7	24	* Don't change this structure - ASM code relies on it.
1da177e4	25	*/
753790e7 RK	26	extern struct processor {
	27	/* MISC
	28	* get data abort address/flags
	29	*/
	30	void (*_data_abort)(unsigned long pc);
	31	/*
	32	* Retrieve prefetch fault address
	33	*/
	34	unsigned long (*_prefetch_abort)(unsigned long lr);
	35	/*
	36	* Set up any processor specifics
	37	*/
	38	void (*_proc_init)(void);
	39	/*
	40	* Disable any processor specifics
	41	*/
	42	void (*_proc_fin)(void);
	43	/*
	44	* Special stuff for a reset
	45	*/
	46	void (*reset)(unsigned long addr) __attribute__((noreturn));
	47	/*
	48	* Idle the processor
	49	*/
	50	int (*_do_idle)(void);
	51	/*
	52	* Processor architecture specific
	53	*/
	54	/*
	55	* clean a virtual address range from the
	56	* D-cache without flushing the cache.
	57	*/
	58	void (dcache_clean_area)(void addr, int size);
	59
	60	/*
	61	* Set the page table
	62	*/
	63	void (switch_mm)(unsigned long pgd_phys, struct mm_struct mm);
	64	/*
	65	* Set a possibly extended PTE. Non-extended PTEs should
	66	* ignore 'ext'.
	67	*/
da028779 CM	68	#ifdef CONFIG_ARM_LPAE
	69	void (set_pte_ext)(pte_t ptep, pte_t pte);
	70	#else
753790e7	71	void (set_pte_ext)(pte_t ptep, pte_t pte, unsigned int ext);
da028779	72	#endif
f6b0fa02 RK	73
	74	/* Suspend/resume */
	75	unsigned int suspend_size;
	76	void (do_suspend)(void );
	77	void (do_resume)(void );
753790e7	78	} processor;
1da177e4 LT	79
1da177e4 LT	80	#ifndef MULTI_CPU
753790e7 RK	81	extern void cpu_proc_init(void);
	82	extern void cpu_proc_fin(void);
	83	extern int cpu_do_idle(void);
	84	extern void cpu_dcache_clean_area(void *, int);
	85	extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm);
da028779 CM	86	#ifdef CONFIG_ARM_LPAE
	87	extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte);
	88	#else
753790e7	89	extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext);
da028779	90	#endif
753790e7	91	extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
abda1bd5 RK	92
	93	/* These three are private to arch/arm/kernel/suspend.c */
	94	extern void cpu_do_suspend(void *);
	95	extern void cpu_do_resume(void *);
1da177e4	96	#else
eca5dc2a WD	97	#define cpu_proc_init processor._proc_init
	98	#define cpu_proc_fin processor._proc_fin
	99	#define cpu_reset processor.reset
	100	#define cpu_do_idle processor._do_idle
	101	#define cpu_dcache_clean_area processor.dcache_clean_area
	102	#define cpu_set_pte_ext processor.set_pte_ext
	103	#define cpu_do_switch_mm processor.switch_mm
abda1bd5 RK	104
	105	/* These three are private to arch/arm/kernel/suspend.c */
	106	#define cpu_do_suspend processor.do_suspend
	107	#define cpu_do_resume processor.do_resume
1da177e4 LT	108	#endif
1da177e4 LT	109
f6b0fa02 RK	110	extern void cpu_resume(void);
f6b0fa02 RK	111
1da177e4 LT	112	#include <asm/memory.h>
1da177e4 LT	113
002547b4 RK	114	#ifdef CONFIG_MMU
002547b4 RK	115
1da177e4 LT	116	#define cpu_switch_mm(pgd,mm) cpu_do_switch_mm(virt_to_phys(pgd),mm)
1da177e4 LT	117
da028779 CM	118	#ifdef CONFIG_ARM_LPAE
	119	#define cpu_get_pgd() \
	120	({ \
	121	unsigned long pg, pg2; \
	122	__asm__("mrrc p15, 0, %0, %1, c2" \
	123	: "=r" (pg), "=r" (pg2) \
	124	: \
	125	: "cc"); \
	126	pg &= ~(PTRS_PER_PGD*sizeof(pgd_t)-1); \
	127	(pgd_t *)phys_to_virt(pg); \
	128	})
	129	#else
1da177e4 LT	130	#define cpu_get_pgd() \
	131	({ \
	132	unsigned long pg; \
	133	__asm__("mrc p15, 0, %0, c2, c0, 0" \
	134	: "=r" (pg) : : "cc"); \
	135	pg &= ~0x3fff; \
	136	(pgd_t *)phys_to_virt(pg); \
	137	})
da028779	138	#endif
1da177e4	139
002547b4 RK	140	#endif
002547b4 RK	141
1da177e4 LT	142	#endif /* __ASSEMBLY__ */
	143	#endif /* __KERNEL__ */
	144	#endif /* __ASM_PROCFNS_H */