diff options
Diffstat (limited to 'arch/arc/mm/dma.c')
| -rw-r--r-- | arch/arc/mm/dma.c | 27 |
1 files changed, 2 insertions, 25 deletions
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c index eafdbd2ad20a..08d91c13ac52 100644 --- a/arch/arc/mm/dma.c +++ b/arch/arc/mm/dma.c @@ -130,29 +130,6 @@ static int arc_dma_mmap(struct device *dev, struct vm_area_struct *vma, return ret; } -/* - * streaming DMA Mapping API... - * CPU accesses page via normal paddr, thus needs to explicitly made - * consistent before each use - */ -static void _dma_cache_sync(phys_addr_t paddr, size_t size, - enum dma_data_direction dir) -{ - switch (dir) { - case DMA_FROM_DEVICE: - dma_cache_inv(paddr, size); - break; - case DMA_TO_DEVICE: - dma_cache_wback(paddr, size); - break; - case DMA_BIDIRECTIONAL: - dma_cache_wback_inv(paddr, size); - break; - default: - pr_err("Invalid DMA dir [%d] for OP @ %pa[p]\n", dir, &paddr); - } -} - static void arc_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) { @@ -185,7 +162,7 @@ static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page, phys_addr_t paddr = page_to_phys(page) + offset; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - _dma_cache_sync(paddr, size, dir); + arc_dma_sync_single_for_device(dev, paddr, size, dir); return paddr; } @@ -205,7 +182,7 @@ static void arc_dma_unmap_page(struct device *dev, dma_addr_t handle, phys_addr_t paddr = handle; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - _dma_cache_sync(paddr, size, dir); + arc_dma_sync_single_for_cpu(dev, paddr, size, dir); } static int arc_dma_map_sg(struct device *dev, struct scatterlist *sg, |