Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_SH_CACHEFLUSH_H
3#define __ASM_SH_CACHEFLUSH_H
4
5#ifdef __KERNEL__
6
7#include <linux/mm.h>
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 */
23extern void (*local_flush_cache_all)(void *args);
24extern void (*local_flush_cache_mm)(void *args);
25extern void (*local_flush_cache_dup_mm)(void *args);
26extern void (*local_flush_cache_page)(void *args);
27extern void (*local_flush_cache_range)(void *args);
28extern void (*local_flush_dcache_page)(void *args);
29extern void (*local_flush_icache_range)(void *args);
30extern void (*local_flush_icache_page)(void *args);
31extern void (*local_flush_cache_sigtramp)(void *args);
32
33static inline void cache_noop(void *args) { }
34
35extern void (*__flush_wback_region)(void *start, int size);
36extern void (*__flush_purge_region)(void *start, int size);
37extern void (*__flush_invalidate_region)(void *start, int size);
38
39extern void flush_cache_all(void);
40extern void flush_cache_mm(struct mm_struct *mm);
41extern void flush_cache_dup_mm(struct mm_struct *mm);
42extern void flush_cache_page(struct vm_area_struct *vma,
43 unsigned long addr, unsigned long pfn);
44extern void flush_cache_range(struct vm_area_struct *vma,
45 unsigned long start, unsigned long end);
46#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
47extern void flush_dcache_page(struct page *page);
48extern void flush_icache_range(unsigned long start, unsigned long end);
49extern void flush_icache_page(struct vm_area_struct *vma,
50 struct page *page);
51extern void flush_cache_sigtramp(unsigned long address);
52
53struct flusher_data {
54 struct vm_area_struct *vma;
55 unsigned long addr1, addr2;
56};
57
58#define ARCH_HAS_FLUSH_ANON_PAGE
59extern void __flush_anon_page(struct page *page, unsigned long);
60
61static 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}
67static inline void flush_kernel_vmap_range(void *addr, int size)
68{
69 __flush_wback_region(addr, size);
70}
71static inline void invalidate_kernel_vmap_range(void *addr, int size)
72{
73 __flush_invalidate_region(addr, size);
74}
75
76#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
77static inline void flush_kernel_dcache_page(struct page *page)
78{
79 flush_dcache_page(page);
80}
81
82extern 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);
85
86extern 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);
89
90#define flush_cache_vmap(start, end) local_flush_cache_all(NULL)
91#define flush_cache_vunmap(start, end) local_flush_cache_all(NULL)
92
93#define flush_dcache_mmap_lock(mapping) do { } while (0)
94#define flush_dcache_mmap_unlock(mapping) do { } while (0)
95
96void kmap_coherent_init(void);
97void *kmap_coherent(struct page *page, unsigned long addr);
98void kunmap_coherent(void *kvaddr);
99
100#define PG_dcache_clean PG_arch_1
101
102void cpu_cache_init(void);
103
104#endif /* __KERNEL__ */
105#endif /* __ASM_SH_CACHEFLUSH_H */