| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 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 */ |