LXR linux/include/asm-arm26/tlbflush.h

   1#ifndef __ASMARM_TLBFLUSH_H
   2#define __ASMARM_TLBFLUSH_H
   3
   4/*
   5 * TLB flushing:
   6 *
   7 *  - flush_tlb_all() flushes all processes TLBs
   8 *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
   9 *  - flush_tlb_page(vma, vmaddr) flushes one page
  10 *  - flush_tlb_range(vma, start, end) flushes a range of pages
  11 */
  12
  13#define flush_tlb_all()                         memc_update_all()
  14#define flush_tlb_mm(mm)                        memc_update_mm(mm)
  15#define flush_tlb_page(vma, vmaddr)             do { printk("flush_tlb_page\n");} while (0)  // IS THIS RIGHT?
  16#define flush_tlb_range(vma,start,end)          \
  17                do { memc_update_mm(vma->vm_mm); (void)(start); (void)(end); } while (0)
  18#define flush_tlb_pgtables(mm,start,end)        do { printk("flush_tlb_pgtables\n");} while (0)
  19#define flush_tlb_kernel_range(s,e)             do { printk("flush_tlb_range\n");} while (0)
  20
  21/*
  22 * The following handle the weird MEMC chip
  23 */
  24static inline void memc_update_all(void)
  25{
  26        struct task_struct *p;
  27        cpu_memc_update_all(init_mm.pgd);
  28        for_each_process(p) {
  29                if (!p->mm)
  30                        continue;
  31                cpu_memc_update_all(p->mm->pgd);
  32        }
  33        processor._set_pgd(current->active_mm->pgd);
  34}
  35
  36static inline void memc_update_mm(struct mm_struct *mm)
  37{
  38        cpu_memc_update_all(mm->pgd);
  39
  40        if (mm == current->active_mm)
  41                processor._set_pgd(mm->pgd);
  42}
  43
  44static inline void
  45memc_clear(struct mm_struct *mm, struct page *page)
  46{
  47        cpu_memc_update_entry(mm->pgd, (unsigned long) page_address(page), 0);
  48
  49        if (mm == current->active_mm)
  50                processor._set_pgd(mm->pgd);
  51}
  52
  53static inline void
  54memc_update_addr(struct mm_struct *mm, pte_t pte, unsigned long vaddr)
  55{
  56        cpu_memc_update_entry(mm->pgd, pte_val(pte), vaddr);
  57
  58        if (mm == current->active_mm)
  59                processor._set_pgd(mm->pgd);
  60}
  61
  62static inline void
  63update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
  64{
  65        struct mm_struct *mm = vma->vm_mm;
  66printk("update_mmu_cache\n");
  67        memc_update_addr(mm, pte, addr);
  68}
  69
  70#endif
  71