[linux-2.6-block.git] / arch / sh / include / asm / cacheflush.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CACHEFLUSH_H
#define __ASM_SH_CACHEFLUSH_H

#ifdef __KERNEL__

#include <linux/mm.h>

/*
 * Cache flushing:
 *
 *  - flush_cache_all() flushes entire cache
 *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
 *  - flush_cache_dup mm(mm) handles cache flushing when forking
 *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
 *  - flush_cache_range(vma, start, end) flushes a range of pages
 *
 *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
 *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
 *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
 *  - flush_cache_sigtramp(vaddr) flushes the signal trampoline
 */
extern void (*local_flush_cache_all)(void *args);
extern void (*local_flush_cache_mm)(void *args);
extern void (*local_flush_cache_dup_mm)(void *args);
extern void (*local_flush_cache_page)(void *args);
extern void (*local_flush_cache_range)(void *args);
extern void (*local_flush_dcache_page)(void *args);
extern void (*local_flush_icache_range)(void *args);
extern void (*local_flush_icache_page)(void *args);
extern void (*local_flush_cache_sigtramp)(void *args);

static inline void cache_noop(void *args) { }

extern void (*__flush_wback_region)(void *start, int size);
extern void (*__flush_purge_region)(void *start, int size);
extern void (*__flush_invalidate_region)(void *start, int size);

extern void flush_cache_all(void);
extern void flush_cache_mm(struct mm_struct *mm);
extern void flush_cache_dup_mm(struct mm_struct *mm);
extern void flush_cache_page(struct vm_area_struct *vma,
				unsigned long addr, unsigned long pfn);
extern void flush_cache_range(struct vm_area_struct *vma,
				 unsigned long start, unsigned long end);
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
extern void flush_dcache_page(struct page *page);
extern void flush_icache_range(unsigned long start, unsigned long end);
extern void flush_icache_page(struct vm_area_struct *vma,
				 struct page *page);
extern void flush_cache_sigtramp(unsigned long address);

struct flusher_data {
	struct vm_area_struct *vma;
	unsigned long addr1, addr2;
};

#define ARCH_HAS_FLUSH_ANON_PAGE
extern void __flush_anon_page(struct page *page, unsigned long);

static inline void flush_anon_page(struct vm_area_struct *vma,
				   struct page *page, unsigned long vmaddr)
{
	if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
		__flush_anon_page(page, vmaddr);
}
static inline void flush_kernel_vmap_range(void *addr, int size)
{
	__flush_wback_region(addr, size);
}
static inline void invalidate_kernel_vmap_range(void *addr, int size)
{
	__flush_invalidate_region(addr, size);
}

#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
static inline void flush_kernel_dcache_page(struct page *page)
{
	flush_dcache_page(page);
}

extern void copy_to_user_page(struct vm_area_struct *vma,
	struct page *page, unsigned long vaddr, void *dst, const void *src,
	unsigned long len);

extern void copy_from_user_page(struct vm_area_struct *vma,
	struct page *page, unsigned long vaddr, void *dst, const void *src,
	unsigned long len);

#define flush_cache_vmap(start, end)		local_flush_cache_all(NULL)
#define flush_cache_vunmap(start, end)		local_flush_cache_all(NULL)

#define flush_dcache_mmap_lock(mapping)		do { } while (0)
#define flush_dcache_mmap_unlock(mapping)	do { } while (0)

void kmap_coherent_init(void);
void *kmap_coherent(struct page *page, unsigned long addr);
void kunmap_coherent(void *kvaddr);

#define PG_dcache_clean	PG_arch_1

void cpu_cache_init(void);

#endif /* __KERNEL__ */
#endif /* __ASM_SH_CACHEFLUSH_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __ASM_SH_CACHEFLUSH_H
1da177e4 LT	3	#define __ASM_SH_CACHEFLUSH_H
e7bd34a1	4
1da177e4 LT	5	#ifdef __KERNEL__
1da177e4 LT	6
37443ef3	7	#include <linux/mm.h>
f9bd71f2 PM	8
	9	/*
	10	* Cache flushing:
	11	*
	12	* - flush_cache_all() flushes entire cache
	13	* - flush_cache_mm(mm) flushes the specified mm context's cache lines
	14	* - flush_cache_dup mm(mm) handles cache flushing when forking
	15	* - flush_cache_page(mm, vmaddr, pfn) flushes a single page
	16	* - flush_cache_range(vma, start, end) flushes a range of pages
	17	*
	18	* - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
	19	* - flush_icache_range(start, end) flushes(invalidates) a range for icache
	20	* - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
	21	* - flush_cache_sigtramp(vaddr) flushes the signal trampoline
	22	*/
f26b2a56 PM	23	extern void (local_flush_cache_all)(void args);
	24	extern void (local_flush_cache_mm)(void args);
	25	extern void (local_flush_cache_dup_mm)(void args);
	26	extern void (local_flush_cache_page)(void args);
	27	extern void (local_flush_cache_range)(void args);
	28	extern void (local_flush_dcache_page)(void args);
	29	extern void (local_flush_icache_range)(void args);
	30	extern void (local_flush_icache_page)(void args);
	31	extern void (local_flush_cache_sigtramp)(void args);
	32
	33	static inline void cache_noop(void *args) { }
f9bd71f2 PM	34
	35	extern void (__flush_wback_region)(void start, int size);
	36	extern void (__flush_purge_region)(void start, int size);
	37	extern void (__flush_invalidate_region)(void start, int size);
1da177e4	38
f26b2a56 PM	39	extern void flush_cache_all(void);
	40	extern void flush_cache_mm(struct mm_struct *mm);
	41	extern void flush_cache_dup_mm(struct mm_struct *mm);
	42	extern void flush_cache_page(struct vm_area_struct *vma,
	43	unsigned long addr, unsigned long pfn);
	44	extern void flush_cache_range(struct vm_area_struct *vma,
	45	unsigned long start, unsigned long end);
2d4dc890	46	#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
f26b2a56 PM	47	extern void flush_dcache_page(struct page *page);
	48	extern void flush_icache_range(unsigned long start, unsigned long end);
	49	extern void flush_icache_page(struct vm_area_struct *vma,
	50	struct page *page);
	51	extern void flush_cache_sigtramp(unsigned long address);
	52
	53	struct flusher_data {
	54	struct vm_area_struct *vma;
	55	unsigned long addr1, addr2;
	56	};
	57
c0fe478d PM	58	#define ARCH_HAS_FLUSH_ANON_PAGE
	59	extern void __flush_anon_page(struct page *page, unsigned long);
	60
	61	static inline void flush_anon_page(struct vm_area_struct *vma,
	62	struct page *page, unsigned long vmaddr)
	63	{
	64	if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
	65	__flush_anon_page(page, vmaddr);
	66	}
c9334f60 JB	67	static inline void flush_kernel_vmap_range(void *addr, int size)
	68	{
	69	__flush_wback_region(addr, size);
	70	}
	71	static inline void invalidate_kernel_vmap_range(void *addr, int size)
	72	{
	73	__flush_invalidate_region(addr, size);
	74	}
c0fe478d	75
844b43ad CA	76	#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
	77	static inline void flush_kernel_dcache_page(struct page *page)
	78	{
	79	flush_dcache_page(page);
	80	}
	81
ba1789ef PM	82	extern void copy_to_user_page(struct vm_area_struct *vma,
	83	struct page page, unsigned long vaddr, void dst, const void *src,
	84	unsigned long len);
1da177e4	85
ba1789ef PM	86	extern void copy_from_user_page(struct vm_area_struct *vma,
	87	struct page page, unsigned long vaddr, void dst, const void *src,
	88	unsigned long len);
ba1789ef	89
b07f6b32 PM	90	#define flush_cache_vmap(start, end) local_flush_cache_all(NULL)
b07f6b32 PM	91	#define flush_cache_vunmap(start, end) local_flush_cache_all(NULL)
1da177e4	92
7fbb2d3b PM	93	#define flush_dcache_mmap_lock(mapping) do { } while (0)
	94	#define flush_dcache_mmap_unlock(mapping) do { } while (0)
	95
2739742c PM	96	void kmap_coherent_init(void);
2739742c PM	97	void kmap_coherent(struct page page, unsigned long addr);
0906a3ad	98	void kunmap_coherent(void *kvaddr);
2739742c	99
55661fc1	100	#define PG_dcache_clean PG_arch_1
dde5e3ff	101
ecba1060 PM	102	void cpu_cache_init(void);
ecba1060 PM	103
1da177e4 LT	104	#endif /* __KERNEL__ */
1da177e4 LT	105	#endif /* __ASM_SH_CACHEFLUSH_H */