root/arch/csky/abiv2/inc/abi/cacheflush.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 
   3 #ifndef __ABI_CSKY_CACHEFLUSH_H
   4 #define __ABI_CSKY_CACHEFLUSH_H
   5 
   6 /* Keep includes the same across arches.  */
   7 #include <linux/mm.h>
   8 
   9 /*
  10  * The cache doesn't need to be flushed when TLB entries change when
  11  * the cache is mapped to physical memory, not virtual memory
  12  */
  13 #define flush_cache_all()                       do { } while (0)
  14 #define flush_cache_mm(mm)                      do { } while (0)
  15 #define flush_cache_dup_mm(mm)                  do { } while (0)
  16 
  17 #define flush_cache_range(vma, start, end) \
  18         do { \
  19                 if (vma->vm_flags & VM_EXEC) \
  20                         icache_inv_all(); \
  21         } while (0)
  22 
  23 #define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
  24 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  25 #define flush_dcache_page(page)                 do { } while (0)
  26 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  27 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  28 
  29 #define flush_icache_range(start, end)          cache_wbinv_range(start, end)
  30 
  31 void flush_icache_page(struct vm_area_struct *vma, struct page *page);
  32 void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
  33                              unsigned long vaddr, int len);
  34 
  35 #define flush_cache_vmap(start, end)            do { } while (0)
  36 #define flush_cache_vunmap(start, end)          do { } while (0)
  37 
  38 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  39 do { \
  40         memcpy(dst, src, len); \
  41         cache_wbinv_range((unsigned long)dst, (unsigned long)dst + len); \
  42 } while (0)
  43 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  44         memcpy(dst, src, len)
  45 
  46 #endif /* __ABI_CSKY_CACHEFLUSH_H */