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