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