diff options
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 69 |
1 files changed, 39 insertions, 30 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 07dfd460d286..ba8319ae5fcc 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -40,16 +40,6 @@ struct dma_map_ops { void (*sync_single_for_device)(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir); - void (*sync_single_range_for_cpu)(struct device *dev, - dma_addr_t dma_handle, - unsigned long offset, - size_t size, - enum dma_data_direction dir); - void (*sync_single_range_for_device)(struct device *dev, - dma_addr_t dma_handle, - unsigned long offset, - size_t size, - enum dma_data_direction dir); void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir); @@ -58,6 +48,7 @@ struct dma_map_ops { enum dma_data_direction dir); int (*mapping_error)(struct device *dev, dma_addr_t dma_addr); int (*dma_supported)(struct device *dev, u64 mask); + int (*set_dma_mask)(struct device *dev, u64 mask); int is_phys; }; @@ -98,32 +89,12 @@ static inline int is_device_dma_capable(struct device *dev) return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE; } -static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size) -{ - return addr + size <= mask; -} - #ifdef CONFIG_HAS_DMA #include <asm/dma-mapping.h> #else #include <asm-generic/dma-mapping-broken.h> #endif -/* for backwards compatibility, removed soon */ -static inline void __deprecated dma_sync_single(struct device *dev, - dma_addr_t addr, size_t size, - enum dma_data_direction dir) -{ - dma_sync_single_for_cpu(dev, addr, size, dir); -} - -static inline void __deprecated dma_sync_sg(struct device *dev, - struct scatterlist *sg, int nelems, - enum dma_data_direction dir) -{ - dma_sync_sg_for_cpu(dev, sg, nelems, dir); -} - static inline u64 dma_get_mask(struct device *dev) { if (dev && dev->dma_mask && *dev->dma_mask) @@ -131,6 +102,18 @@ static inline u64 dma_get_mask(struct device *dev) return DMA_BIT_MASK(32); } +#ifdef ARCH_HAS_DMA_SET_COHERENT_MASK +int dma_set_coherent_mask(struct device *dev, u64 mask); +#else +static inline int dma_set_coherent_mask(struct device *dev, u64 mask) +{ + if (!dma_supported(dev, mask)) + return -EIO; + dev->coherent_dma_mask = mask; + return 0; +} +#endif + extern u64 dma_get_required_mask(struct device *dev); static inline unsigned int dma_get_max_seg_size(struct device *dev) @@ -163,6 +146,16 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) return -EIO; } +#ifdef CONFIG_HAS_DMA +static inline int dma_get_cache_alignment(void) +{ +#ifdef ARCH_DMA_MINALIGN + return ARCH_DMA_MINALIGN; +#endif + return 1; +} +#endif + /* flags for the coherent memory api */ #define DMA_MEMORY_MAP 0x01 #define DMA_MEMORY_IO 0x02 @@ -236,4 +229,20 @@ struct dma_attrs; #endif /* CONFIG_HAVE_DMA_ATTRS */ +#ifdef CONFIG_NEED_DMA_MAP_STATE +#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME +#define DEFINE_DMA_UNMAP_LEN(LEN_NAME) __u32 LEN_NAME +#define dma_unmap_addr(PTR, ADDR_NAME) ((PTR)->ADDR_NAME) +#define dma_unmap_addr_set(PTR, ADDR_NAME, VAL) (((PTR)->ADDR_NAME) = (VAL)) +#define dma_unmap_len(PTR, LEN_NAME) ((PTR)->LEN_NAME) +#define dma_unmap_len_set(PTR, LEN_NAME, VAL) (((PTR)->LEN_NAME) = (VAL)) +#else +#define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) +#define DEFINE_DMA_UNMAP_LEN(LEN_NAME) +#define dma_unmap_addr(PTR, ADDR_NAME) (0) +#define dma_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) +#define dma_unmap_len(PTR, LEN_NAME) (0) +#define dma_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) +#endif + #endif |