bc34626250846942bf70ff87a7acac767fc7fb3a
[linux-2.6.git] / include / asm-frv / tlbflush.h
1 /* tlbflush.h: TLB flushing functions
2  *
3  * Copyright (C) 2004 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 License
8  * as published by the Free Software Foundation; either version
9  * 2 of the License, or (at your option) any later version.
10  */
11
12 #ifndef _ASM_TLBFLUSH_H
13 #define _ASM_TLBFLUSH_H
14
15 #include <linux/config.h>
16 #include <linux/mm.h>
17 #include <asm/processor.h>
18
19 #ifdef CONFIG_MMU
20
21 #ifndef __ASSEMBLY__
22 extern void asmlinkage __flush_tlb_all(void);
23 extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
24 extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
25 extern void asmlinkage __flush_tlb_range(unsigned long contextid,
26                                          unsigned long start, unsigned long end);
27 #endif /* !__ASSEMBLY__ */
28
29 #define flush_tlb_all()                         \
30 do {                                            \
31         preempt_disable();                      \
32         __flush_tlb_all();                      \
33         preempt_enable();                       \
34 } while(0)
35
36 #define flush_tlb_mm(mm)                        \
37 do {                                            \
38         preempt_disable();                      \
39         __flush_tlb_mm((mm)->context.id);       \
40         preempt_enable();                       \
41 } while(0)
42
43 #define flush_tlb_range(vma,start,end)                                  \
44 do {                                                                    \
45         preempt_disable();                                              \
46         __flush_tlb_range((vma)->vm_mm->context.id, start, end);        \
47         preempt_enable();                                               \
48 } while(0)
49
50 #define flush_tlb_page(vma,addr)                                \
51 do {                                                            \
52         preempt_disable();                                      \
53         __flush_tlb_page((vma)->vm_mm->context.id, addr);       \
54         preempt_enable();                                       \
55 } while(0)
56
57
58 #define __flush_tlb_global()                    flush_tlb_all()
59 #define flush_tlb()                             flush_tlb_all()
60 #define flush_tlb_kernel_range(start, end)      flush_tlb_all()
61 #define flush_tlb_pgtables(mm,start,end) \
62         asm volatile("movgs %0,scr0 ! movgs %0,scr1" :: "r"(ULONG_MAX) : "memory");
63
64 #else
65
66 #define flush_tlb()                             BUG()
67 #define flush_tlb_all()                         BUG()
68 #define flush_tlb_mm(mm)                        BUG()
69 #define flush_tlb_page(vma,addr)                BUG()
70 #define flush_tlb_range(mm,start,end)           BUG()
71 #define flush_tlb_pgtables(mm,start,end)        BUG()
72 #define flush_tlb_kernel_range(start, end)      BUG()
73
74 #endif
75
76
77 #endif /* _ASM_TLBFLUSH_H */