arch/score/include/asm/cacheflush.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SCORE_CACHEFLUSH_H
   3 #define _ASM_SCORE_CACHEFLUSH_H
   4
   5 /* Keep includes the same across arches. */
   6 #include <linux/mm.h>
   7
   8 extern void flush_cache_all(void);
   9 extern void flush_cache_mm(struct mm_struct *mm);
  10 extern void flush_cache_range(struct vm_area_struct *vma,
  11                                 unsigned long start, unsigned long end);
  12 extern void flush_cache_page(struct vm_area_struct *vma,
  13                                 unsigned long page, unsigned long pfn);
  14 extern void flush_cache_sigtramp(unsigned long addr);
  15 extern void flush_icache_all(void);
  16 extern void flush_icache_range(unsigned long start, unsigned long end);
  17 extern void flush_dcache_range(unsigned long start, unsigned long end);
  18 extern void flush_dcache_page(struct page *page);
  19
  20 #define PG_dcache_dirty         PG_arch_1
  21
  22 #define flush_cache_dup_mm(mm)                  do {} while (0)
  23 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  24 #define flush_dcache_mmap_lock(mapping)         do {} while (0)
  25 #define flush_dcache_mmap_unlock(mapping)       do {} while (0)
  26 #define flush_cache_vmap(start, end)            do {} while (0)
  27 #define flush_cache_vunmap(start, end)          do {} while (0)
  28
  29 static inline void flush_icache_page(struct vm_area_struct *vma,
  30         struct page *page)
  31 {
  32         if (vma->vm_flags & VM_EXEC) {
  33                 void *v = page_address(page);
  34                 flush_icache_range((unsigned long) v,
  35                                 (unsigned long) v + PAGE_SIZE);
  36         }
  37 }
  38
  39 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  40         memcpy(dst, src, len)
  41
  42 #define copy_to_user_page(vma, page, vaddr, dst, src, len)      \
  43         do {                                                    \
  44                 memcpy(dst, src, len);                          \
  45                 if ((vma->vm_flags & VM_EXEC))                  \
  46                         flush_cache_page(vma, vaddr, page_to_pfn(page));\
  47         } while (0)
  48
  49 #endif /* _ASM_SCORE_CACHEFLUSH_H */