1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __ASM_SH_CACHEFLUSH_H
3*4882a593Smuzhiyun #define __ASM_SH_CACHEFLUSH_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/mm.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun * Cache flushing:
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * - flush_cache_all() flushes entire cache
11*4882a593Smuzhiyun * - flush_cache_mm(mm) flushes the specified mm context's cache lines
12*4882a593Smuzhiyun * - flush_cache_dup mm(mm) handles cache flushing when forking
13*4882a593Smuzhiyun * - flush_cache_page(mm, vmaddr, pfn) flushes a single page
14*4882a593Smuzhiyun * - flush_cache_range(vma, start, end) flushes a range of pages
15*4882a593Smuzhiyun *
16*4882a593Smuzhiyun * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
17*4882a593Smuzhiyun * - flush_icache_range(start, end) flushes(invalidates) a range for icache
18*4882a593Smuzhiyun * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
19*4882a593Smuzhiyun * - flush_cache_sigtramp(vaddr) flushes the signal trampoline
20*4882a593Smuzhiyun */
21*4882a593Smuzhiyun extern void (*local_flush_cache_all)(void *args);
22*4882a593Smuzhiyun extern void (*local_flush_cache_mm)(void *args);
23*4882a593Smuzhiyun extern void (*local_flush_cache_dup_mm)(void *args);
24*4882a593Smuzhiyun extern void (*local_flush_cache_page)(void *args);
25*4882a593Smuzhiyun extern void (*local_flush_cache_range)(void *args);
26*4882a593Smuzhiyun extern void (*local_flush_dcache_page)(void *args);
27*4882a593Smuzhiyun extern void (*local_flush_icache_range)(void *args);
28*4882a593Smuzhiyun extern void (*local_flush_icache_page)(void *args);
29*4882a593Smuzhiyun extern void (*local_flush_cache_sigtramp)(void *args);
30*4882a593Smuzhiyun
cache_noop(void * args)31*4882a593Smuzhiyun static inline void cache_noop(void *args) { }
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun extern void (*__flush_wback_region)(void *start, int size);
34*4882a593Smuzhiyun extern void (*__flush_purge_region)(void *start, int size);
35*4882a593Smuzhiyun extern void (*__flush_invalidate_region)(void *start, int size);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun extern void flush_cache_all(void);
38*4882a593Smuzhiyun extern void flush_cache_mm(struct mm_struct *mm);
39*4882a593Smuzhiyun extern void flush_cache_dup_mm(struct mm_struct *mm);
40*4882a593Smuzhiyun extern void flush_cache_page(struct vm_area_struct *vma,
41*4882a593Smuzhiyun unsigned long addr, unsigned long pfn);
42*4882a593Smuzhiyun extern void flush_cache_range(struct vm_area_struct *vma,
43*4882a593Smuzhiyun unsigned long start, unsigned long end);
44*4882a593Smuzhiyun #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
45*4882a593Smuzhiyun extern void flush_dcache_page(struct page *page);
46*4882a593Smuzhiyun extern void flush_icache_range(unsigned long start, unsigned long end);
47*4882a593Smuzhiyun #define flush_icache_user_range flush_icache_range
48*4882a593Smuzhiyun extern void flush_icache_page(struct vm_area_struct *vma,
49*4882a593Smuzhiyun struct page *page);
50*4882a593Smuzhiyun extern void flush_cache_sigtramp(unsigned long address);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun struct flusher_data {
53*4882a593Smuzhiyun struct vm_area_struct *vma;
54*4882a593Smuzhiyun unsigned long addr1, addr2;
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun #define ARCH_HAS_FLUSH_ANON_PAGE
58*4882a593Smuzhiyun extern void __flush_anon_page(struct page *page, unsigned long);
59*4882a593Smuzhiyun
flush_anon_page(struct vm_area_struct * vma,struct page * page,unsigned long vmaddr)60*4882a593Smuzhiyun static inline void flush_anon_page(struct vm_area_struct *vma,
61*4882a593Smuzhiyun struct page *page, unsigned long vmaddr)
62*4882a593Smuzhiyun {
63*4882a593Smuzhiyun if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
64*4882a593Smuzhiyun __flush_anon_page(page, vmaddr);
65*4882a593Smuzhiyun }
flush_kernel_vmap_range(void * addr,int size)66*4882a593Smuzhiyun static inline void flush_kernel_vmap_range(void *addr, int size)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun __flush_wback_region(addr, size);
69*4882a593Smuzhiyun }
invalidate_kernel_vmap_range(void * addr,int size)70*4882a593Smuzhiyun static inline void invalidate_kernel_vmap_range(void *addr, int size)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun __flush_invalidate_region(addr, size);
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
flush_kernel_dcache_page(struct page * page)76*4882a593Smuzhiyun static inline void flush_kernel_dcache_page(struct page *page)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun flush_dcache_page(page);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun extern void copy_to_user_page(struct vm_area_struct *vma,
82*4882a593Smuzhiyun struct page *page, unsigned long vaddr, void *dst, const void *src,
83*4882a593Smuzhiyun unsigned long len);
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun extern void copy_from_user_page(struct vm_area_struct *vma,
86*4882a593Smuzhiyun struct page *page, unsigned long vaddr, void *dst, const void *src,
87*4882a593Smuzhiyun unsigned long len);
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun #define flush_cache_vmap(start, end) local_flush_cache_all(NULL)
90*4882a593Smuzhiyun #define flush_cache_vunmap(start, end) local_flush_cache_all(NULL)
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun #define flush_dcache_mmap_lock(mapping) do { } while (0)
93*4882a593Smuzhiyun #define flush_dcache_mmap_unlock(mapping) do { } while (0)
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun void kmap_coherent_init(void);
96*4882a593Smuzhiyun void *kmap_coherent(struct page *page, unsigned long addr);
97*4882a593Smuzhiyun void kunmap_coherent(void *kvaddr);
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #define PG_dcache_clean PG_arch_1
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun void cpu_cache_init(void);
102*4882a593Smuzhiyun
sh_cacheop_vaddr(void * vaddr)103*4882a593Smuzhiyun static inline void *sh_cacheop_vaddr(void *vaddr)
104*4882a593Smuzhiyun {
105*4882a593Smuzhiyun if (__in_29bit_mode())
106*4882a593Smuzhiyun vaddr = (void *)CAC_ADDR((unsigned long)vaddr);
107*4882a593Smuzhiyun return vaddr;
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun #endif /* __ASM_SH_CACHEFLUSH_H */
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