summaryrefslogtreecommitdiff
path: root/arch/csky/abiv1/inc/abi/cacheflush.h
blob: fce5604cef400dbe3df8899c754dfc70f2a3bff3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.

#ifndef __ABI_CSKY_CACHEFLUSH_H
#define __ABI_CSKY_CACHEFLUSH_H

#include <linux/compiler.h>
#include <asm/string.h>
#include <asm/cache.h>

#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
extern void flush_dcache_page(struct page *);

#define flush_cache_mm(mm)			cache_wbinv_all()
#define flush_cache_page(vma, page, pfn)	cache_wbinv_all()
#define flush_cache_dup_mm(mm)			cache_wbinv_all()

/*
 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
 * Use cache_wbinv_all() here and need to be improved in future.
 */
#define flush_cache_range(vma, start, end)	cache_wbinv_all()
#define flush_cache_vmap(start, end)		cache_wbinv_range(start, end)
#define flush_cache_vunmap(start, end)		cache_wbinv_range(start, end)

#define flush_icache_page(vma, page)		cache_wbinv_all()
#define flush_icache_range(start, end)		cache_wbinv_range(start, end)

#define flush_icache_user_range(vma,page,addr,len) \
	flush_dcache_page(page)

#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
do { \
	cache_wbinv_all(); \
	memcpy(dst, src, len); \
	cache_wbinv_all(); \
} while (0)

#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { \
	cache_wbinv_all(); \
	memcpy(dst, src, len); \
	cache_wbinv_all(); \
} while (0)

#define flush_dcache_mmap_lock(mapping)		do {} while (0)
#define flush_dcache_mmap_unlock(mapping)	do {} while (0)

#endif /* __ABI_CSKY_CACHEFLUSH_H */