1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_CACHEFLUSH_H
3#define __ASM_CACHEFLUSH_H
4
5/* Keep includes the same across arches. */
6#include <linux/mm.h>
7
8/*
9 * The cache doesn't need to be flushed when TLB entries change when
10 * the cache is mapped to physical memory, not virtual memory
11 */
12#define flush_cache_all() do { } while (0)
13#define flush_cache_mm(mm) do { } while (0)
14#define flush_cache_dup_mm(mm) do { } while (0)
15#define flush_cache_range(vma, start, end) do { } while (0)
16#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
17#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
18#define flush_dcache_page(page) do { } while (0)
19#define flush_dcache_mmap_lock(mapping) do { } while (0)
20#define flush_dcache_mmap_unlock(mapping) do { } while (0)
21#define flush_icache_range(start, end) do { } while (0)
22#define flush_icache_page(vma,pg) do { } while (0)
23#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
24#define flush_cache_vmap(start, end) do { } while (0)
25#define flush_cache_vunmap(start, end) do { } while (0)
26
27#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
28 do { \
29 memcpy(dst, src, len); \
30 flush_icache_user_range(vma, page, vaddr, len); \
31 } while (0)
32#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
33 memcpy(dst, src, len)
34
35#endif /* __ASM_CACHEFLUSH_H */
36