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
  15 extern int reserve_memtype(u64 start, u64 end,
  16                 unsigned long req_type, unsigned long *ret_type);
  17 extern int free_memtype(u64 start, u64 end);
  18
  19 extern int kernel_map_sync_memtype(u64 base, unsigned long size,
  20                 unsigned long flag);
  21 extern void map_devmem(unsigned long pfn, unsigned long size,
  22                        struct pgprot vma_prot);
  23 extern void unmap_devmem(unsigned long pfn, unsigned long size,
  24                          struct pgprot vma_prot);
  25
  26 #endif /* _ASM_X86_PAT_H */