Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
[linux-2.6] / include / asm-mn10300 / tlbflush.h
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()                                           \
17 do {                                                            \
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()                         \
44 do {                                            \
45         preempt_disable();                      \
46         __flush_tlb_all();                      \
47         preempt_enable();                       \
48 } while (0)
49
50 #define flush_tlb_mm(mm)                        \
51 do {                                            \
52         preempt_disable();                      \
53         __flush_tlb_all();                      \
54         preempt_enable();                       \
55 } while (0)
56
57 #define flush_tlb_range(vma, start, end)                        \
58 do {                                                            \
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)                      \
70 do {                                                            \
71         unsigned long __s __attribute__((unused)) = (start);    \
72         unsigned long __e __attribute__((unused)) = (end);      \
73         flush_tlb_all();                                        \
74 } while (0)
75
76 extern 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 */