LXR linux/arch/powerpc/include/asm/nohash/tlbflush.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_POWERPC_NOHASH_TLBFLUSH_H
   3#define _ASM_POWERPC_NOHASH_TLBFLUSH_H
   4
   5/*
   6 * TLB flushing:
   7 *
   8 *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
   9 *  - flush_tlb_page(vma, vmaddr) flushes one page
  10 *  - local_flush_tlb_mm(mm, full) flushes the specified mm context on
  11 *                           the local processor
  12 *  - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
  13 *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
  14 *  - flush_tlb_range(vma, start, end) flushes a range of pages
  15 *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  16 *
  17 */
  18
  19/*
  20 * TLB flushing for software loaded TLB chips
  21 *
  22 * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
  23 * flush_tlb_kernel_range are best implemented as tlbia vs
  24 * specific tlbie's
  25 */
  26
  27struct vm_area_struct;
  28struct mm_struct;
  29
  30#define MMU_NO_CONTEXT          ((unsigned int)-1)
  31
  32extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  33                            unsigned long end);
  34extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
  35
  36extern void local_flush_tlb_mm(struct mm_struct *mm);
  37extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  38
  39extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
  40                                   int tsize, int ind);
  41
  42#ifdef CONFIG_SMP
  43extern void flush_tlb_mm(struct mm_struct *mm);
  44extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  45extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
  46                             int tsize, int ind);
  47#else
  48#define flush_tlb_mm(mm)                local_flush_tlb_mm(mm)
  49#define flush_tlb_page(vma,addr)        local_flush_tlb_page(vma,addr)
  50#define __flush_tlb_page(mm,addr,p,i)   __local_flush_tlb_page(mm,addr,p,i)
  51#endif
  52
  53#endif /* _ASM_POWERPC_NOHASH_TLBFLUSH_H */
  54