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review.trustedfirmware.org / hafnium / third_party / linux / 157378f43faad830e4aa3815bde5fa9f9a9f5be6 / . / arch / sh / include / asm / cacheflush.h
blob: 4486a865ff62f64f8ac30e9707e3fb8a338860aa [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_SH_CACHEFLUSH_H
3#define __ASM_SH_CACHEFLUSH_H
4
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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 */
21extern void (*local_flush_cache_all)(void *args);
22extern void (*local_flush_cache_mm)(void *args);
23extern void (*local_flush_cache_dup_mm)(void *args);
24extern void (*local_flush_cache_page)(void *args);
25extern void (*local_flush_cache_range)(void *args);
26extern void (*local_flush_dcache_page)(void *args);
27extern void (*local_flush_icache_range)(void *args);
28extern void (*local_flush_icache_page)(void *args);
29extern void (*local_flush_cache_sigtramp)(void *args);
30
31static inline void cache_noop(void *args) { }
32
33extern void (*__flush_wback_region)(void *start, int size);
34extern void (*__flush_purge_region)(void *start, int size);
35extern void (*__flush_invalidate_region)(void *start, int size);
36
37extern void flush_cache_all(void);
38extern void flush_cache_mm(struct mm_struct *mm);
39extern void flush_cache_dup_mm(struct mm_struct *mm);
40extern void flush_cache_page(struct vm_area_struct *vma,
41 unsigned long addr, unsigned long pfn);
42extern void flush_cache_range(struct vm_area_struct *vma,
43 unsigned long start, unsigned long end);
44#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
45extern void flush_dcache_page(struct page *page);
46extern void flush_icache_range(unsigned long start, unsigned long end);
Olivier Deprez157378f2022-04-04 15:47:50 +0200[diff] [blame^]47#define flush_icache_user_range flush_icache_range
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]48extern void flush_icache_page(struct vm_area_struct *vma,
49 struct page *page);
50extern void flush_cache_sigtramp(unsigned long address);
51
52struct flusher_data {
53 struct vm_area_struct *vma;
54 unsigned long addr1, addr2;
55};
56
57#define ARCH_HAS_FLUSH_ANON_PAGE
58extern void __flush_anon_page(struct page *page, unsigned long);
59
60static 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}
66static inline void flush_kernel_vmap_range(void *addr, int size)
67{
68 __flush_wback_region(addr, size);
69}
70static 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
76static inline void flush_kernel_dcache_page(struct page *page)
77{
78 flush_dcache_page(page);
79}
80
81extern 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
85extern 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
95void kmap_coherent_init(void);
96void *kmap_coherent(struct page *page, unsigned long addr);
97void kunmap_coherent(void *kvaddr);
98
99#define PG_dcache_clean PG_arch_1
100
101void cpu_cache_init(void);
102
103static 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
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]110#endif /* __ASM_SH_CACHEFLUSH_H */