diff options
Diffstat (limited to 'arch/m68knommu/kernel/dma.c')
| -rw-r--r-- | arch/m68knommu/kernel/dma.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/arch/m68knommu/kernel/dma.c b/arch/m68knommu/kernel/dma.c index 93612580663..aaf38bbbb6c 100644 --- a/arch/m68knommu/kernel/dma.c +++ b/arch/m68knommu/kernel/dma.c @@ -7,10 +7,9 @@ #include <linux/types.h> #include <linux/mm.h> -#include <linux/string.h> #include <linux/device.h> #include <linux/dma-mapping.h> -#include <asm/io.h> +#include <asm/cacheflush.h> void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) @@ -36,7 +35,39 @@ void dma_free_coherent(struct device *dev, size_t size, free_pages((unsigned long)vaddr, get_order(size)); } -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir) +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { + switch (dir) { + case DMA_TO_DEVICE: + flush_dcache_range(handle, size); + break; + case DMA_FROM_DEVICE: + /* Should be clear already */ + break; + default: + if (printk_ratelimit()) + printk("dma_sync_single_for_device: unsupported dir %u\n", dir); + break; + } +} + +EXPORT_SYMBOL(dma_sync_single_for_device); +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = virt_to_phys(addr); + flush_dcache_range(handle, size); + return handle; } +EXPORT_SYMBOL(dma_map_single); +dma_addr_t dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = page_to_phys(page) + offset; + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_page); |