arch/openrisc/include/asm/tlbflush.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * OpenRISC Linux
   4  *
   5  * Linux architectural port borrowing liberally from similar works of
   6  * others.  All original copyrights apply as per the original source
   7  * declaration.
   8  *
   9  * OpenRISC implementation:
  10  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
  11  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
  12  * et al.
  13  */
  14
  15 #ifndef __ASM_OPENRISC_TLBFLUSH_H
  16 #define __ASM_OPENRISC_TLBFLUSH_H
  17
  18 #include <linux/mm.h>
  19 #include <asm/processor.h>
  20 #include <asm/pgtable.h>
  21 #include <asm/pgalloc.h>
  22 #include <asm/current.h>
  23 #include <linux/sched.h>
  24
  25 /*
  26  *  - flush_tlb() flushes the current mm struct TLBs
  27  *  - flush_tlb_all() flushes all processes TLBs
  28  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
  29  *  - flush_tlb_page(vma, vmaddr) flushes one page
  30  *  - flush_tlb_range(mm, start, end) flushes a range of pages
  31  */
  32 extern void local_flush_tlb_all(void);
  33 extern void local_flush_tlb_mm(struct mm_struct *mm);
  34 extern void local_flush_tlb_page(struct vm_area_struct *vma,
  35                                  unsigned long addr);
  36 extern void local_flush_tlb_range(struct vm_area_struct *vma,
  37                                   unsigned long start,
  38                                   unsigned long end);
  39
  40 #ifndef CONFIG_SMP
  41 #define flush_tlb_all   local_flush_tlb_all
  42 #define flush_tlb_mm    local_flush_tlb_mm
  43 #define flush_tlb_page  local_flush_tlb_page
  44 #define flush_tlb_range local_flush_tlb_range
  45 #else
  46 extern void flush_tlb_all(void);
  47 extern void flush_tlb_mm(struct mm_struct *mm);
  48 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
  49 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  50                             unsigned long end);
  51 #endif
  52
  53 static inline void flush_tlb(void)
  54 {
  55         flush_tlb_mm(current->mm);
  56 }
  57
  58 static inline void flush_tlb_kernel_range(unsigned long start,
  59                                           unsigned long end)
  60 {
  61         flush_tlb_range(NULL, start, end);
  62 }
  63
  64 #endif /* __ASM_OPENRISC_TLBFLUSH_H */