arch/mips/include/asm/tlb.h

   1 #ifndef __ASM_TLB_H
   2 #define __ASM_TLB_H
   3
   4 #include <asm/cpu-features.h>
   5 #include <asm/mipsregs.h>
   6
   7 /*
   8  * MIPS doesn't need any special per-pte or per-vma handling, except
   9  * we need to flush cache for area to be unmapped.
  10  */
  11 #define tlb_start_vma(tlb, vma)                                 \
  12         do {                                                    \
  13                 if (!tlb->fullmm)                               \
  14                         flush_cache_range(vma, vma->vm_start, vma->vm_end); \
  15         }  while (0)
  16 #define tlb_end_vma(tlb, vma) do { } while (0)
  17 #define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
  18
  19 /*
  20  * .. because we flush the whole mm when it fills up.
  21  */
  22 #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
  23
  24 #define UNIQUE_ENTRYHI(idx)                                             \
  25                 ((CKSEG0 + ((idx) << (PAGE_SHIFT + 1))) |               \
  26                  (cpu_has_tlbinv ? MIPS_ENTRYHI_EHINV : 0))
  27
  28 static inline unsigned int num_wired_entries(void)
  29 {
  30         unsigned int wired = read_c0_wired();
  31
  32         if (cpu_has_mips_r6)
  33                 wired &= MIPSR6_WIRED_WIRED;
  34
  35         return wired;
  36 }
  37
  38 #include <asm-generic/tlb.h>
  39
  40 #endif /* __ASM_TLB_H */