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Linux/arch/csky/abiv1/inc/abi/cacheflush.h

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  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 ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
 18 extern void flush_kernel_dcache_page(struct page *);
 19 
 20 #define flush_dcache_mmap_lock(mapping)         xa_lock_irq(&mapping->i_pages)
 21 #define flush_dcache_mmap_unlock(mapping)       xa_unlock_irq(&mapping->i_pages)
 22 
 23 static inline void flush_kernel_vmap_range(void *addr, int size)
 24 {
 25         dcache_wbinv_all();
 26 }
 27 static inline void invalidate_kernel_vmap_range(void *addr, int size)
 28 {
 29         dcache_wbinv_all();
 30 }
 31 
 32 #define ARCH_HAS_FLUSH_ANON_PAGE
 33 static inline void flush_anon_page(struct vm_area_struct *vma,
 34                          struct page *page, unsigned long vmaddr)
 35 {
 36         if (PageAnon(page))
 37                 cache_wbinv_all();
 38 }
 39 
 40 /*
 41  * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken.
 42  * Use cache_wbinv_all() here and need to be improved in future.
 43  */
 44 extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
 45 #define flush_cache_vmap(start, end)            cache_wbinv_all()
 46 #define flush_cache_vunmap(start, end)          cache_wbinv_all()
 47 
 48 #define flush_icache_page(vma, page)            do {} while (0);
 49 #define flush_icache_range(start, end)          cache_wbinv_range(start, end)
 50 #define flush_icache_mm_range(mm, start, end)   cache_wbinv_range(start, end)
 51 #define flush_icache_deferred(mm)               do {} while (0);
 52 
 53 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
 54 do { \
 55         memcpy(dst, src, len); \
 56 } while (0)
 57 
 58 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
 59 do { \
 60         memcpy(dst, src, len); \
 61         cache_wbinv_all(); \
 62 } while (0)
 63 
 64 #endif /* __ABI_CSKY_CACHEFLUSH_H */
 65 

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