blob: e0239865abcbe28946e82f6fa0c5d5900a42464b [file] [log] [blame]
David Howellsb920de12008-02-08 04:19:31 -08001/* 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 : "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 */