LXR linux/arch/microblaze/include/asm/tlbflush.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   4 * Copyright (C) 2008-2009 PetaLogix
   5 * Copyright (C) 2006 Atmark Techno, Inc.
   6 */
   7
   8#ifndef _ASM_MICROBLAZE_TLBFLUSH_H
   9#define _ASM_MICROBLAZE_TLBFLUSH_H
  10
  11#ifdef CONFIG_MMU
  12
  13#include <linux/sched.h>
  14#include <linux/threads.h>
  15#include <asm/processor.h>      /* For TASK_SIZE */
  16#include <asm/mmu.h>
  17#include <asm/page.h>
  18
  19extern void _tlbie(unsigned long address);
  20extern void _tlbia(void);
  21
  22#define __tlbia()       { preempt_disable(); _tlbia(); preempt_enable(); }
  23#define __tlbie(x)      { _tlbie(x); }
  24
  25static inline void local_flush_tlb_all(void)
  26        { __tlbia(); }
  27static inline void local_flush_tlb_mm(struct mm_struct *mm)
  28        { __tlbia(); }
  29static inline void local_flush_tlb_page(struct vm_area_struct *vma,
  30                                unsigned long vmaddr)
  31        { __tlbie(vmaddr); }
  32static inline void local_flush_tlb_range(struct vm_area_struct *vma,
  33                unsigned long start, unsigned long end)
  34        { __tlbia(); }
  35
  36#define flush_tlb_kernel_range(start, end)      do { } while (0)
  37
  38#define update_mmu_cache(vma, addr, ptep)       do { } while (0)
  39
  40#define flush_tlb_all local_flush_tlb_all
  41#define flush_tlb_mm local_flush_tlb_mm
  42#define flush_tlb_page local_flush_tlb_page
  43#define flush_tlb_range local_flush_tlb_range
  44
  45/*
  46 * This is called in munmap when we have freed up some page-table
  47 * pages.  We don't need to do anything here, there's nothing special
  48 * about our page-table pages.  -- paulus
  49 */
  50static inline void flush_tlb_pgtables(struct mm_struct *mm,
  51        unsigned long start, unsigned long end) { }
  52
  53#else /* CONFIG_MMU */
  54
  55#define flush_tlb()                             BUG()
  56#define flush_tlb_all()                         BUG()
  57#define flush_tlb_mm(mm)                        BUG()
  58#define flush_tlb_page(vma, addr)               BUG()
  59#define flush_tlb_range(mm, start, end)         BUG()
  60#define flush_tlb_pgtables(mm, start, end)      BUG()
  61#define flush_tlb_kernel_range(start, end)      BUG()
  62
  63#endif /* CONFIG_MMU */
  64
  65#endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
  66