1/* SPDX-License-Identifier: GPL-2.0 */
2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
3
4#ifndef __ABI_CSKY_CACHEFLUSH_H
5#define __ABI_CSKY_CACHEFLUSH_H
6
7#include <linux/mm.h>
8#include <asm/string.h>
9#include <asm/cache.h>
10
11#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
12extern void flush_dcache_page(struct page *);
13
14#define flush_cache_mm(mm)			dcache_wbinv_all()
15#define flush_cache_page(vma, page, pfn)	cache_wbinv_all()
16#define flush_cache_dup_mm(mm)			cache_wbinv_all()
17
18#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
19extern void flush_kernel_dcache_page(struct page *);
20
21#define flush_dcache_mmap_lock(mapping)		xa_lock_irq(&mapping->i_pages)
22#define flush_dcache_mmap_unlock(mapping)	xa_unlock_irq(&mapping->i_pages)
23
24static inline void flush_kernel_vmap_range(void *addr, int size)
25{
26	dcache_wbinv_all();
27}
28static inline void invalidate_kernel_vmap_range(void *addr, int size)
29{
30	dcache_wbinv_all();
31}
32
33#define ARCH_HAS_FLUSH_ANON_PAGE
34static inline void flush_anon_page(struct vm_area_struct *vma,
35			 struct page *page, unsigned long vmaddr)
36{
37	if (PageAnon(page))
38		cache_wbinv_all();
39}
40
41/*
42 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
43 * Use cache_wbinv_all() here and need to be improved in future.
44 */
45extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
46#define flush_cache_vmap(start, end)		cache_wbinv_all()
47#define flush_cache_vunmap(start, end)		cache_wbinv_all()
48
49#define flush_icache_page(vma, page)		do {} while (0);
50#define flush_icache_range(start, end)		cache_wbinv_range(start, end)
51#define flush_icache_mm_range(mm, start, end)	cache_wbinv_range(start, end)
52#define flush_icache_deferred(mm)		do {} while (0);
53
54#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
55do { \
56	memcpy(dst, src, len); \
57} while (0)
58
59#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
60do { \
61	memcpy(dst, src, len); \
62	cache_wbinv_all(); \
63} while (0)
64
65#endif /* __ABI_CSKY_CACHEFLUSH_H */
66