/arch/mn10300/include/asm/tlbflush.h
C++ Header | 80 lines | 48 code | 12 blank | 20 comment | 6 complexity | 1a4e2fb9c79abce250137d5ccb3a7a3b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1/* MN10300 TLB flushing functions 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11#ifndef _ASM_TLBFLUSH_H 12#define _ASM_TLBFLUSH_H 13 14#include <asm/processor.h> 15 16#define __flush_tlb() \ 17do { \ 18 int w; \ 19 __asm__ __volatile__ \ 20 (" mov %1,%0 \n" \ 21 " or %2,%0 \n" \ 22 " mov %0,%1 \n" \ 23 : "=d"(w) \ 24 : "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV) \ 25 : "cc", "memory" \ 26 ); \ 27} while (0) 28 29#define __flush_tlb_all() __flush_tlb() 30#define __flush_tlb_one(addr) __flush_tlb() 31 32 33/* 34 * TLB flushing: 35 * 36 * - flush_tlb() flushes the current mm struct TLBs 37 * - flush_tlb_all() flushes all processes TLBs 38 * - flush_tlb_mm(mm) flushes the specified mm context TLB's 39 * - flush_tlb_page(vma, vmaddr) flushes one page 40 * - flush_tlb_range(mm, start, end) flushes a range of pages 41 * - flush_tlb_pgtables(mm, start, end) flushes a range of page tables 42 */ 43#define flush_tlb_all() \ 44do { \ 45 preempt_disable(); \ 46 __flush_tlb_all(); \ 47 preempt_enable(); \ 48} while (0) 49 50#define flush_tlb_mm(mm) \ 51do { \ 52 preempt_disable(); \ 53 __flush_tlb_all(); \ 54 preempt_enable(); \ 55} while (0) 56 57#define flush_tlb_range(vma, start, end) \ 58do { \ 59 unsigned long __s __attribute__((unused)) = (start); \ 60 unsigned long __e __attribute__((unused)) = (end); \ 61 preempt_disable(); \ 62 __flush_tlb_all(); \ 63 preempt_enable(); \ 64} while (0) 65 66 67#define __flush_tlb_global() flush_tlb_all() 68#define flush_tlb() flush_tlb_all() 69#define flush_tlb_kernel_range(start, end) \ 70do { \ 71 unsigned long __s __attribute__((unused)) = (start); \ 72 unsigned long __e __attribute__((unused)) = (end); \ 73 flush_tlb_all(); \ 74} while (0) 75 76extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr); 77 78#define flush_tlb_pgtables(mm, start, end) do {} while (0) 79 80#endif /* _ASM_TLBFLUSH_H */