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
12 extern 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
19 extern 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
flush_kernel_vmap_range(void * addr,int size)24 static inline void flush_kernel_vmap_range(void *addr, int size)
25 {
26 dcache_wbinv_all();
27 }
invalidate_kernel_vmap_range(void * addr,int size)28 static inline void invalidate_kernel_vmap_range(void *addr, int size)
29 {
30 dcache_wbinv_all();
31 }
32
33 #define ARCH_HAS_FLUSH_ANON_PAGE
flush_anon_page(struct vm_area_struct * vma,struct page * page,unsigned long vmaddr)34 static 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 */
45 extern 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) \
55 do { \
56 memcpy(dst, src, len); \
57 } while (0)
58
59 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
60 do { \
61 memcpy(dst, src, len); \
62 cache_wbinv_all(); \
63 } while (0)
64
65 #endif /* __ABI_CSKY_CACHEFLUSH_H */
66