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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 10:42:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 10:42:52 +0100 |
| commit | 4708ac49305bbcd511600d4af71a4c6dca15af65 (patch) | |
| tree | 77ba5c83a7d4f4a119e3fd524d82adc297df1e35 /arch/arm/mm/cache-v6.S | |
| parent | 1dbd30e9890fd69e50b17edd70ca583546b0fe4e (diff) | |
| parent | 2f7989efd4398d92b8adffce2e07dd043a0895fe (diff) | |
Merge branch 'origin' into misc
Diffstat (limited to 'arch/arm/mm/cache-v6.S')
| -rw-r--r-- | arch/arm/mm/cache-v6.S | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index e46ecd84713..86aa689ef1a 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -211,8 +211,9 @@ v6_dma_inv_range: mcrne p15, 0, r1, c7, c15, 1 @ clean & invalidate unified line #endif 1: -#ifdef CONFIG_SMP - str r0, [r0] @ write for ownership +#ifdef CONFIG_DMA_CACHE_RWFO + ldr r2, [r0] @ read for ownership + str r2, [r0] @ write for ownership #endif #ifdef HARVARD_CACHE mcr p15, 0, r0, c7, c6, 1 @ invalidate D line @@ -234,7 +235,7 @@ v6_dma_inv_range: v6_dma_clean_range: bic r0, r0, #D_CACHE_LINE_SIZE - 1 1: -#ifdef CONFIG_SMP +#ifdef CONFIG_DMA_CACHE_RWFO ldr r2, [r0] @ read for ownership #endif #ifdef HARVARD_CACHE @@ -257,7 +258,7 @@ v6_dma_clean_range: ENTRY(v6_dma_flush_range) bic r0, r0, #D_CACHE_LINE_SIZE - 1 1: -#ifdef CONFIG_SMP +#ifdef CONFIG_DMA_CACHE_RWFO ldr r2, [r0] @ read for ownership str r2, [r0] @ write for ownership #endif @@ -283,9 +284,13 @@ ENTRY(v6_dma_map_area) add r1, r1, r0 teq r2, #DMA_FROM_DEVICE beq v6_dma_inv_range +#ifndef CONFIG_DMA_CACHE_RWFO + b v6_dma_clean_range +#else teq r2, #DMA_TO_DEVICE beq v6_dma_clean_range b v6_dma_flush_range +#endif ENDPROC(v6_dma_map_area) /* @@ -295,6 +300,11 @@ ENDPROC(v6_dma_map_area) * - dir - DMA direction */ ENTRY(v6_dma_unmap_area) +#ifndef CONFIG_DMA_CACHE_RWFO + add r1, r1, r0 + teq r2, #DMA_TO_DEVICE + bne v6_dma_inv_range +#endif mov pc, lr ENDPROC(v6_dma_unmap_area) |