Commit | Line | Data |
---|---|---|
b920de1b DH |
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 */ |