include/asm-arm/proc-armo/cache.h

   1 /*
   2  * Cache flushing...
   3  */
   4 #define flush_cache_all()                       do { } while (0)
   5 #define flush_cache_mm(mm)                      do { } while (0)
   6 #define flush_cache_range(mm,start,end)         do { } while (0)
   7 #define flush_cache_page(vma,vmaddr)            do { } while (0)
   8 #define flush_page_to_ram(page)                 do { } while (0)
   9 #define flush_icache_page(vma,page)             do { } while (0)
  10 #define flush_icache_range(start,end)           do { } while (0)
  11
  12 /*
  13  * TLB flushing:
  14  *
  15  *  - flush_tlb_all() flushes all processes TLBs
  16  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
  17  *  - flush_tlb_page(vma, vmaddr) flushes one page
  18  *  - flush_tlb_range(mm, start, end) flushes a range of pages
  19  */
  20 #define flush_tlb_all()                         memc_update_all()
  21 #define flush_tlb_mm(mm)                        do { } while (0)
  22 #define flush_tlb_range(mm, start, end)         do { (void)(start); (void)(end); } while (0)
  23 #define flush_tlb_page(vma, vmaddr)             do { } while (0)
  24
  25 /*
  26  * The following handle the weird MEMC chip
  27  */
  28 extern __inline__ void memc_update_all(void)
  29 {
  30         struct task_struct *p;
  31
  32         cpu_memc_update_all(init_mm.pgd);
  33         for_each_task(p) {
  34                 if (!p->mm)
  35                         continue;
  36                 cpu_memc_update_all(p->mm->pgd);
  37         }
  38         processor._set_pgd(current->active_mm->pgd);
  39 }
  40
  41 extern __inline__ void memc_update_mm(struct mm_struct *mm)
  42 {
  43         cpu_memc_update_all(mm->pgd);
  44
  45         if (mm == current->active_mm)
  46                 processor._set_pgd(mm->pgd);
  47 }
  48
  49 extern __inline__ void
  50 memc_update_addr(struct mm_struct *mm, pte_t pte, unsigned long vaddr)
  51 {
  52         cpu_memc_update_entry(mm->pgd, pte_val(pte), vaddr);
  53
  54         if (mm == current->active_mm)
  55                 processor._set_pgd(mm->pgd);
  56 }
  57
  58 extern __inline__ void
  59 memc_clear(struct mm_struct *mm, struct page *page)
  60 {
  61         cpu_memc_update_entry(mm->pgd, page_address(page), 0);
  62
  63         if (mm == current->active_mm)
  64                 processor._set_pgd(mm->pgd);
  65 }
  66
  67 #define __flush_entry_to_ram(entry)
  68