diff options
| -rw-r--r-- | arch/frv/mb93090-mb00/pci-dma-nommu.c | 14 | ||||
| -rw-r--r-- | arch/frv/mb93090-mb00/pci-dma.c | 9 |
2 files changed, 17 insertions, 6 deletions
diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c index 90f2e4cb33d6..187688128c65 100644 --- a/arch/frv/mb93090-mb00/pci-dma-nommu.c +++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c @@ -109,16 +109,19 @@ static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction, unsigned long attrs) { - int i; struct scatterlist *sg; + int i; + + BUG_ON(direction == DMA_NONE); + + if (attrs & DMA_ATTR_SKIP_CPU_SYNC) + return nents; for_each_sg(sglist, sg, nents, i) { frv_cache_wback_inv(sg_dma_address(sg), sg_dma_address(sg) + sg_dma_len(sg)); } - BUG_ON(direction == DMA_NONE); - return nents; } @@ -127,7 +130,10 @@ static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, enum dma_data_direction direction, unsigned long attrs) { BUG_ON(direction == DMA_NONE); - flush_dcache_page(page); + + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + flush_dcache_page(page); + return (dma_addr_t) page_to_phys(page) + offset; } diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c index f585745b1abc..dba7df918144 100644 --- a/arch/frv/mb93090-mb00/pci-dma.c +++ b/arch/frv/mb93090-mb00/pci-dma.c @@ -40,13 +40,16 @@ static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction, unsigned long attrs) { + struct scatterlist *sg; unsigned long dampr2; void *vaddr; int i; - struct scatterlist *sg; BUG_ON(direction == DMA_NONE); + if (attrs & DMA_ATTR_SKIP_CPU_SYNC) + return nents; + dampr2 = __get_DAMPR(2); for_each_sg(sglist, sg, nents, i) { @@ -70,7 +73,9 @@ static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction direction, unsigned long attrs) { - flush_dcache_page(page); + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + flush_dcache_page(page); + return (dma_addr_t) page_to_phys(page) + offset; } |