arch/x86/include/asm/pat.h

   1 #ifndef _ASM_X86_PAT_H
   2 #define _ASM_X86_PAT_H
   3
   4 #include <linux/types.h>
   5 #include <asm/pgtable_types.h>
   6
   7 #ifdef CONFIG_X86_PAT
   8 extern int pat_enabled;
   9 #else
  10 static const int pat_enabled;
  11 #endif
  12
  13 extern void pat_init(void);
  14 void pat_init_cache_modes(void);
  15
  16 extern int reserve_memtype(u64 start, u64 end,
  17                 enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
  18 extern int free_memtype(u64 start, u64 end);
  19
  20 extern int kernel_map_sync_memtype(u64 base, unsigned long size,
  21                 enum page_cache_mode pcm);
  22
  23 int io_reserve_memtype(resource_size_t start, resource_size_t end,
  24                         enum page_cache_mode *pcm);
  25
  26 void io_free_memtype(resource_size_t start, resource_size_t end);
  27
  28 #endif /* _ASM_X86_PAT_H */