| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* cache.S: cache managment routines |
| 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 | #include <asm/spr-regs.h> |
| 13 | #include <asm/cache.h> |
| 14 | |
| 15 | .text |
| 16 | .p2align 4 |
| 17 | |
| 18 | ############################################################################### |
| 19 | # |
| 20 | # Write back a range of dcache |
| 21 | # - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9]) |
| 22 | # |
| 23 | ############################################################################### |
| 24 | .globl frv_dcache_writeback |
| 25 | .type frv_dcache_writeback,@function |
| 26 | frv_dcache_writeback: |
| 27 | andi gr8,~(L1_CACHE_BYTES-1),gr8 |
| 28 | |
| 29 | 2: dcf @(gr8,gr0) |
| 30 | addi gr8,#L1_CACHE_BYTES,gr8 |
| 31 | cmp gr9,gr8,icc0 |
| 32 | bhi icc0,#2,2b |
| 33 | |
| 34 | membar |
| 35 | bralr |
| 36 | .size frv_dcache_writeback, .-frv_dcache_writeback |
| 37 | |
| 38 | ############################################################################## |
| 39 | # |
| 40 | # Invalidate a range of dcache and icache |
| 41 | # - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]); |
| 42 | # |
| 43 | ############################################################################### |
| 44 | .globl frv_cache_invalidate |
| 45 | .type frv_cache_invalidate,@function |
| 46 | frv_cache_invalidate: |
| 47 | andi gr8,~(L1_CACHE_BYTES-1),gr8 |
| 48 | |
| 49 | 2: dci @(gr8,gr0) |
| 50 | ici @(gr8,gr0) |
| 51 | addi gr8,#L1_CACHE_BYTES,gr8 |
| 52 | cmp gr9,gr8,icc0 |
| 53 | bhi icc0,#2,2b |
| 54 | |
| 55 | membar |
| 56 | bralr |
| 57 | .size frv_cache_invalidate, .-frv_cache_invalidate |
| 58 | |
| 59 | ############################################################################## |
| 60 | # |
| 61 | # Invalidate a range of icache |
| 62 | # - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]); |
| 63 | # |
| 64 | ############################################################################### |
| 65 | .globl frv_icache_invalidate |
| 66 | .type frv_icache_invalidate,@function |
| 67 | frv_icache_invalidate: |
| 68 | andi gr8,~(L1_CACHE_BYTES-1),gr8 |
| 69 | |
| 70 | 2: ici @(gr8,gr0) |
| 71 | addi gr8,#L1_CACHE_BYTES,gr8 |
| 72 | cmp gr9,gr8,icc0 |
| 73 | bhi icc0,#2,2b |
| 74 | |
| 75 | membar |
| 76 | bralr |
| 77 | .size frv_icache_invalidate, .-frv_icache_invalidate |
| 78 | |
| 79 | ############################################################################### |
| 80 | # |
| 81 | # Write back and invalidate a range of dcache and icache |
| 82 | # - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9]) |
| 83 | # |
| 84 | ############################################################################### |
| 85 | .globl frv_cache_wback_inv |
| 86 | .type frv_cache_wback_inv,@function |
| 87 | frv_cache_wback_inv: |
| 88 | andi gr8,~(L1_CACHE_BYTES-1),gr8 |
| 89 | |
| 90 | 2: dcf @(gr8,gr0) |
| 91 | ici @(gr8,gr0) |
| 92 | addi gr8,#L1_CACHE_BYTES,gr8 |
| 93 | cmp gr9,gr8,icc0 |
| 94 | bhi icc0,#2,2b |
| 95 | |
| 96 | membar |
| 97 | bralr |
| 98 | .size frv_cache_wback_inv, .-frv_cache_wback_inv |