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 */
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
cache_noop(void * args)33 static inline void cache_noop(void *args) { }
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);
38
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);
46 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
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
58 #define ARCH_HAS_FLUSH_ANON_PAGE
59 extern void __flush_anon_page(struct page *page, unsigned long);
60
flush_anon_page(struct vm_area_struct * vma,struct page * page,unsigned long vmaddr)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 }
flush_kernel_vmap_range(void * addr,int size)67 static inline void flush_kernel_vmap_range(void *addr, int size)
68 {
69 __flush_wback_region(addr, size);
70 }
invalidate_kernel_vmap_range(void * addr,int size)71 static 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
flush_kernel_dcache_page(struct page * page)77 static inline void flush_kernel_dcache_page(struct page *page)
78 {
79 flush_dcache_page(page);
80 }
81
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);
85
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);
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
96 void kmap_coherent_init(void);
97 void *kmap_coherent(struct page *page, unsigned long addr);
98 void kunmap_coherent(void *kvaddr);
99
100 #define PG_dcache_clean PG_arch_1
101
102 void cpu_cache_init(void);
103
sh_cacheop_vaddr(void * vaddr)104 static inline void *sh_cacheop_vaddr(void *vaddr)
105 {
106 if (__in_29bit_mode())
107 vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
108 return vaddr;
109 }
110
111 #endif /* __KERNEL__ */
112 #endif /* __ASM_SH_CACHEFLUSH_H */
113
