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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-26 16:19:58 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-02-15 15:22:20 +0000 |
| commit | a9c9147eb9b1dba0ce567a41897c7773b4d1b0bc (patch) | |
| tree | 178938c909f4717c2e599d6f3de954d7ee8a7f21 /arch/arm/mm/cache-fa.S | |
| parent | 93f1d629e22b08642eb713ad96ac2cb9ade0641c (diff) | |
| download | lwn-a9c9147eb9b1dba0ce567a41897c7773b4d1b0bc.tar.gz lwn-a9c9147eb9b1dba0ce567a41897c7773b4d1b0bc.zip | |
ARM: dma-mapping: provide per-cpu type map/unmap functions
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mm/cache-fa.S')
| -rw-r--r-- | arch/arm/mm/cache-fa.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S index a89444a3c016..8ebffdd6fcff 100644 --- a/arch/arm/mm/cache-fa.S +++ b/arch/arm/mm/cache-fa.S @@ -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 |