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