diff options
Diffstat (limited to 'include/asm-powerpc/dma-mapping.h')
| -rw-r--r-- | include/asm-powerpc/dma-mapping.h | 125 |
1 files changed, 95 insertions, 30 deletions
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h index bbefb69bfb6..74c54978098 100644 --- a/include/asm-powerpc/dma-mapping.h +++ b/include/asm-powerpc/dma-mapping.h @@ -13,6 +13,7 @@ /* need struct page definitions */ #include <linux/mm.h> #include <linux/scatterlist.h> +#include <linux/dma-attrs.h> #include <asm/io.h> #define DMA_ERROR_CODE (~(dma_addr_t)0x0) @@ -44,6 +45,15 @@ extern void __dma_sync_page(struct page *page, unsigned long offset, #endif /* ! CONFIG_NOT_COHERENT_CACHE */ #ifdef CONFIG_PPC64 + +static inline unsigned long device_to_mask(struct device *dev) +{ + if (dev->dma_mask && *dev->dma_mask) + return *dev->dma_mask; + /* Assume devices without mask can take 32 bit addresses */ + return 0xfffffffful; +} + /* * DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO */ @@ -53,13 +63,17 @@ struct dma_mapping_ops { void (*free_coherent)(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle); dma_addr_t (*map_single)(struct device *dev, void *ptr, - size_t size, enum dma_data_direction direction); + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs); void (*unmap_single)(struct device *dev, dma_addr_t dma_addr, - size_t size, enum dma_data_direction direction); + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs); int (*map_sg)(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction); + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs); void (*unmap_sg)(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction direction); + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs); int (*dma_supported)(struct device *dev, u64 mask); int (*set_dma_mask)(struct device *dev, u64 dma_mask); }; @@ -109,6 +123,77 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask) return 0; } +static inline dma_addr_t dma_map_single_attrs(struct device *dev, + void *cpu_addr, + size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + return dma_ops->map_single(dev, cpu_addr, size, direction, attrs); +} + +static inline void dma_unmap_single_attrs(struct device *dev, + dma_addr_t dma_addr, + size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + dma_ops->unmap_single(dev, dma_addr, size, direction, attrs); +} + +static inline dma_addr_t dma_map_page_attrs(struct device *dev, + struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + return dma_ops->map_single(dev, page_address(page) + offset, size, + direction, attrs); +} + +static inline void dma_unmap_page_attrs(struct device *dev, + dma_addr_t dma_address, + size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + dma_ops->unmap_single(dev, dma_address, size, direction, attrs); +} + +static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + return dma_ops->map_sg(dev, sg, nents, direction, attrs); +} + +static inline void dma_unmap_sg_attrs(struct device *dev, + struct scatterlist *sg, + int nhwentries, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + struct dma_mapping_ops *dma_ops = get_dma_ops(dev); + + BUG_ON(!dma_ops); + dma_ops->unmap_sg(dev, sg, nhwentries, direction, attrs); +} + static inline void *dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { @@ -131,63 +216,43 @@ static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction direction) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - return dma_ops->map_single(dev, cpu_addr, size, direction); + return dma_map_single_attrs(dev, cpu_addr, size, direction, NULL); } static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction direction) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - dma_ops->unmap_single(dev, dma_addr, size, direction); + dma_unmap_single_attrs(dev, dma_addr, size, direction, NULL); } 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) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - return dma_ops->map_single(dev, page_address(page) + offset, size, - direction); + return dma_map_page_attrs(dev, page, offset, size, direction, NULL); } static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, enum dma_data_direction direction) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - dma_ops->unmap_single(dev, dma_address, size, direction); + dma_unmap_page_attrs(dev, dma_address, size, direction, NULL); } static inline int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - return dma_ops->map_sg(dev, sg, nents, direction); + return dma_map_sg_attrs(dev, sg, nents, direction, NULL); } static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, enum dma_data_direction direction) { - struct dma_mapping_ops *dma_ops = get_dma_ops(dev); - - BUG_ON(!dma_ops); - dma_ops->unmap_sg(dev, sg, nhwentries, direction); + dma_unmap_sg_attrs(dev, sg, nhwentries, direction, NULL); } - /* * Available generic sets of operations */ |