1 /* SPDX-License-Identifier: GPL-2.0 */
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_page(pg) flushes(wback&invalidates) a page for dcache
17 * - flush_icache_range(start, end) flushes(invalidates) a range for icache
18 * - flush_icache_page(vma, pg) flushes(invalidates) a page 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_page)(void *args);
27 extern void (*local_flush_icache_range)(void *args);
28 extern void (*local_flush_icache_page)(void *args);
29 extern void (*local_flush_cache_sigtramp)(void *args);
30
cache_noop(void * args)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 extern void flush_dcache_page(struct page *page);
46 extern void flush_icache_range(unsigned long start, unsigned long end);
47 #define flush_icache_user_range flush_icache_range
48 extern void flush_icache_page(struct vm_area_struct *vma,
49 struct page *page);
50 extern void flush_cache_sigtramp(unsigned long address);
51
52 struct flusher_data {
53 struct vm_area_struct *vma;
54 unsigned long addr1, addr2;
55 };
56
57 #define ARCH_HAS_FLUSH_ANON_PAGE
58 extern void __flush_anon_page(struct page *page, unsigned long);
59
flush_anon_page(struct vm_area_struct * vma,struct page * page,unsigned long vmaddr)60 static 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 }
flush_kernel_vmap_range(void * addr,int size)66 static inline void flush_kernel_vmap_range(void *addr, int size)
67 {
68 __flush_wback_region(addr, size);
69 }
invalidate_kernel_vmap_range(void * addr,int size)70 static 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
flush_kernel_dcache_page(struct page * page)76 static inline void flush_kernel_dcache_page(struct page *page)
77 {
78 flush_dcache_page(page);
79 }
80
81 extern 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
85 extern 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
95 void kmap_coherent_init(void);
96 void *kmap_coherent(struct page *page, unsigned long addr);
97 void kunmap_coherent(void *kvaddr);
98
99 #define PG_dcache_clean PG_arch_1
100
101 void cpu_cache_init(void);
102
sh_cacheop_vaddr(void * vaddr)103 static inline void *sh_cacheop_vaddr(void *vaddr)
104 {
105 if (__in_29bit_mode())
106 vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
107 return vaddr;
108 }
109
110 #endif /* __ASM_SH_CACHEFLUSH_H */
111