root/arch/powerpc/include/asm/nohash/tlbflush.h

INCLUDED FROM

   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 
  27 struct vm_area_struct;
  28 struct mm_struct;
  29 
  30 #define MMU_NO_CONTEXT          ((unsigned int)-1)
  31 
  32 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  33                             unsigned long end);
  34 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
  35 
  36 extern void local_flush_tlb_mm(struct mm_struct *mm);
  37 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  38 
  39 extern void __local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
  40                                    int tsize, int ind);
  41 
  42 #ifdef CONFIG_SMP
  43 extern void flush_tlb_mm(struct mm_struct *mm);
  44 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
  45 extern 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 */