diff options
Diffstat (limited to 'arch/mn10300/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/mn10300/include/asm/dma-mapping.h | 161 |
1 files changed, 3 insertions, 158 deletions
diff --git a/arch/mn10300/include/asm/dma-mapping.h b/arch/mn10300/include/asm/dma-mapping.h index a18abfc558eb..1dcd44757f32 100644 --- a/arch/mn10300/include/asm/dma-mapping.h +++ b/arch/mn10300/include/asm/dma-mapping.h @@ -11,154 +11,14 @@ #ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/scatterlist.h> - #include <asm/cache.h> #include <asm/io.h> -/* - * See Documentation/DMA-API.txt for the description of how the - * following DMA API should work. - */ - -extern void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, int flag); - -extern void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); - -#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f)) -#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h)) - -static inline -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - mn10300_dcache_flush_inv(); - return virt_to_bus(ptr); -} - -static inline -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline -int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) -{ - struct scatterlist *sg; - int i; - - BUG_ON(!valid_dma_direction(direction)); - WARN_ON(nents == 0 || sglist[0].length == 0); - - for_each_sg(sglist, sg, nents, i) { - BUG_ON(!sg_page(sg)); - - sg->dma_address = sg_phys(sg); - } +extern struct dma_map_ops mn10300_dma_ops; - mn10300_dcache_flush_inv(); - return nents; -} - -static inline -void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(!valid_dma_direction(direction)); -} - -static inline -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return page_to_bus(page) + offset; -} - -static inline -void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { -} - -static inline -void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, - size_t size, enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - -static inline -void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - - -static inline -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) -{ -} - -static inline -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, enum dma_data_direction direction) -{ - mn10300_dcache_flush_inv(); -} - -static inline -int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline -int dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, so we can't - * guarantee allocations that must be within a tighter range than - * GFP_DMA - */ - if (mask < 0x00ffffff) - return 0; - return 1; -} - -static inline -int dma_set_mask(struct device *dev, u64 mask) -{ - if (!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - return 0; + return &mn10300_dma_ops; } static inline @@ -168,19 +28,4 @@ void dma_cache_sync(void *vaddr, size_t size, mn10300_dcache_flush_inv(); } -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; -} - -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} - #endif |