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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef __ASM_SH_CACHEFLUSH_H |
3 | #define __ASM_SH_CACHEFLUSH_H |
4 | |
5 | #include <linux/mm.h> |
6 | |
7 | /* |
8 | * Cache flushing: |
9 | * |
10 | * - flush_cache_all() flushes entire cache |
11 | * - flush_cache_mm(mm) flushes the specified mm context's cache lines |
12 | * - flush_cache_dup mm(mm) handles cache flushing when forking |
13 | * - flush_cache_page(mm, vmaddr, pfn) flushes a single page |
14 | * - flush_cache_range(vma, start, end) flushes a range of pages |
15 | * |
16 | * - flush_dcache_folio(folio) flushes(wback&invalidates) a folio for dcache |
17 | * - flush_icache_range(start, end) flushes(invalidates) a range for icache |
18 | * - flush_icache_pages(vma, pg, nr) flushes(invalidates) pages for icache |
19 | * - flush_cache_sigtramp(vaddr) flushes the signal trampoline |
20 | */ |
21 | extern void (*local_flush_cache_all)(void *args); |
22 | extern void (*local_flush_cache_mm)(void *args); |
23 | extern void (*local_flush_cache_dup_mm)(void *args); |
24 | extern void (*local_flush_cache_page)(void *args); |
25 | extern void (*local_flush_cache_range)(void *args); |
26 | extern void (*local_flush_dcache_folio)(void *args); |
27 | extern void (*local_flush_icache_range)(void *args); |
28 | extern void (*local_flush_icache_folio)(void *args); |
29 | extern void (*local_flush_cache_sigtramp)(void *args); |
30 | |
31 | static inline void cache_noop(void *args) { } |
32 | |
33 | extern void (*__flush_wback_region)(void *start, int size); |
34 | extern void (*__flush_purge_region)(void *start, int size); |
35 | extern void (*__flush_invalidate_region)(void *start, int size); |
36 | |
37 | extern void flush_cache_all(void); |
38 | extern void flush_cache_mm(struct mm_struct *mm); |
39 | extern void flush_cache_dup_mm(struct mm_struct *mm); |
40 | extern void flush_cache_page(struct vm_area_struct *vma, |
41 | unsigned long addr, unsigned long pfn); |
42 | extern void flush_cache_range(struct vm_area_struct *vma, |
43 | unsigned long start, unsigned long end); |
44 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
45 | void flush_dcache_folio(struct folio *folio); |
46 | #define flush_dcache_folio flush_dcache_folio |
47 | static inline void flush_dcache_page(struct page *page) |
48 | { |
49 | flush_dcache_folio(page_folio(page)); |
50 | } |
51 | |
52 | extern void flush_icache_range(unsigned long start, unsigned long end); |
53 | #define flush_icache_user_range flush_icache_range |
54 | void flush_icache_pages(struct vm_area_struct *vma, struct page *page, |
55 | unsigned int nr); |
56 | #define flush_icache_pages flush_icache_pages |
57 | extern void flush_cache_sigtramp(unsigned long address); |
58 | |
59 | struct flusher_data { |
60 | struct vm_area_struct *vma; |
61 | unsigned long addr1, addr2; |
62 | }; |
63 | |
64 | #define ARCH_HAS_FLUSH_ANON_PAGE |
65 | extern void __flush_anon_page(struct page *page, unsigned long); |
66 | |
67 | static inline void flush_anon_page(struct vm_area_struct *vma, |
68 | struct page *page, unsigned long vmaddr) |
69 | { |
70 | if (boot_cpu_data.dcache.n_aliases && PageAnon(page)) |
71 | __flush_anon_page(page, vmaddr); |
72 | } |
73 | |
74 | #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 |
75 | static inline void flush_kernel_vmap_range(void *addr, int size) |
76 | { |
77 | __flush_wback_region(addr, size); |
78 | } |
79 | static inline void invalidate_kernel_vmap_range(void *addr, int size) |
80 | { |
81 | __flush_invalidate_region(addr, size); |
82 | } |
83 | |
84 | extern void copy_to_user_page(struct vm_area_struct *vma, |
85 | struct page *page, unsigned long vaddr, void *dst, const void *src, |
86 | unsigned long len); |
87 | |
88 | extern void copy_from_user_page(struct vm_area_struct *vma, |
89 | struct page *page, unsigned long vaddr, void *dst, const void *src, |
90 | unsigned long len); |
91 | |
92 | #define flush_cache_vmap(start, end) local_flush_cache_all(NULL) |
93 | #define flush_cache_vunmap(start, end) local_flush_cache_all(NULL) |
94 | |
95 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
96 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
97 | |
98 | void kmap_coherent_init(void); |
99 | void *kmap_coherent(struct page *page, unsigned long addr); |
100 | void kunmap_coherent(void *kvaddr); |
101 | |
102 | #define PG_dcache_clean PG_arch_1 |
103 | |
104 | void cpu_cache_init(void); |
105 | |
106 | static inline void *sh_cacheop_vaddr(void *vaddr) |
107 | { |
108 | if (__in_29bit_mode()) |
109 | vaddr = (void *)CAC_ADDR((unsigned long)vaddr); |
110 | return vaddr; |
111 | } |
112 | |
113 | #endif /* __ASM_SH_CACHEFLUSH_H */ |
114 |
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