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ARM: dma-mapping: provide per-cpu type map/unmap functions

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Russell King
2009-11-26 16:19:58 +00:00
parent 93f1d629e2
commit a9c9147eb9
24 changed files with 598 additions and 17 deletions
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26
arch/arm/mm/cache-fa.S
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@@ -205,6 +205,30 @@ ENTRY(fa_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer
mov pc, lr
/*
* dma_map_area(start, size, dir)
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
ENTRY(fa_dma_map_area)
add r1, r1, r0
cmp r2, #DMA_TO_DEVICE
beq fa_dma_clean_range
bcs fa_dma_inv_range
b fa_dma_flush_range
ENDPROC(fa_dma_map_area)
/*
* dma_unmap_area(start, size, dir)
* - start - kernel virtual start address
* - size - size of region
* - dir - DMA direction
*/
ENTRY(fa_dma_unmap_area)
mov pc, lr
ENDPROC(fa_dma_unmap_area)
__INITDATA
.type fa_cache_fns, #object
@@ -215,6 +239,8 @@ ENTRY(fa_cache_fns)
.long fa_coherent_kern_range
.long fa_coherent_user_range
.long fa_flush_kern_dcache_area
.long fa_dma_map_area
.long fa_dma_unmap_area
.long fa_dma_inv_range
.long fa_dma_clean_range
.long fa_dma_flush_range