2 * linux/arch/arm/mm/cache-v3.S
4 * Copyright (C) 1997-2002 Russell king
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 #include <linux/linkage.h>
11 #include <linux/init.h>
13 #include "proc-macros.S"
18 * Unconditionally clean and invalidate the entire icache.
20 ENTRY(v3_flush_icache_all)
22 ENDPROC(v3_flush_icache_all)
25 * flush_user_cache_all()
27 * Invalidate all cache entries in a particular address
30 * - mm - mm_struct describing address space
32 ENTRY(v3_flush_user_cache_all)
35 * flush_kern_cache_all()
37 * Clean and invalidate the entire cache.
39 ENTRY(v3_flush_kern_cache_all)
43 * flush_user_cache_range(start, end, flags)
45 * Invalidate a range of cache entries in the specified
48 * - start - start address (may not be aligned)
49 * - end - end address (exclusive, may not be aligned)
50 * - flags - vma_area_struct flags describing address space
52 ENTRY(v3_flush_user_cache_range)
54 mcreq p15, 0, ip, c7, c0, 0 @ flush ID cache
58 * coherent_kern_range(start, end)
60 * Ensure coherency between the Icache and the Dcache in the
61 * region described by start. If you have non-snooping
62 * Harvard caches, you need to implement this function.
64 * - start - virtual start address
65 * - end - virtual end address
67 ENTRY(v3_coherent_kern_range)
71 * coherent_user_range(start, end)
73 * Ensure coherency between the Icache and the Dcache in the
74 * region described by start. If you have non-snooping
75 * Harvard caches, you need to implement this function.
77 * - start - virtual start address
78 * - end - virtual end address
80 ENTRY(v3_coherent_user_range)
84 * flush_kern_dcache_area(void *page, size_t size)
86 * Ensure no D cache aliasing occurs, either with itself or
89 * - addr - kernel address
90 * - size - region size
92 ENTRY(v3_flush_kern_dcache_area)
96 * dma_flush_range(start, end)
98 * Clean and invalidate the specified virtual address range.
100 * - start - virtual start address
101 * - end - virtual end address
103 ENTRY(v3_dma_flush_range)
105 mcr p15, 0, r0, c7, c0, 0 @ flush ID cache
109 * dma_unmap_area(start, size, dir)
110 * - start - kernel virtual start address
111 * - size - size of region
112 * - dir - DMA direction
114 ENTRY(v3_dma_unmap_area)
115 teq r2, #DMA_TO_DEVICE
116 bne v3_dma_flush_range
120 * dma_map_area(start, size, dir)
121 * - start - kernel virtual start address
122 * - size - size of region
123 * - dir - DMA direction
125 ENTRY(v3_dma_map_area)
127 ENDPROC(v3_dma_unmap_area)
128 ENDPROC(v3_dma_map_area)
132 .type v3_cache_fns, #object
134 .long v3_flush_icache_all
135 .long v3_flush_kern_cache_all
136 .long v3_flush_user_cache_all
137 .long v3_flush_user_cache_range
138 .long v3_coherent_kern_range
139 .long v3_coherent_user_range
140 .long v3_flush_kern_dcache_area
141 .long v3_dma_map_area
142 .long v3_dma_unmap_area
143 .long v3_dma_flush_range
144 .size v3_cache_fns, . - v3_cache_fns