From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- include/asm-generic/dma-mapping-broken.h | 95 ++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 include/asm-generic/dma-mapping-broken.h (limited to 'include/asm-generic/dma-mapping-broken.h') diff --git a/include/asm-generic/dma-mapping-broken.h b/include/asm-generic/dma-mapping-broken.h new file mode 100644 index 000000000..6c32af918 --- /dev/null +++ b/include/asm-generic/dma-mapping-broken.h @@ -0,0 +1,95 @@ +#ifndef _ASM_GENERIC_DMA_MAPPING_H +#define _ASM_GENERIC_DMA_MAPPING_H + +/* define the dma api to allow compilation but not linking of + * dma dependent code. Code that depends on the dma-mapping + * API needs to set 'depends on HAS_DMA' in its Kconfig + */ + +struct scatterlist; + +extern void * +dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t flag); + +extern void +dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_handle); + +static inline void *dma_alloc_attrs(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) +{ + /* attrs is not supported and ignored */ + return dma_alloc_coherent(dev, size, dma_handle, flag); +} + +static inline void dma_free_attrs(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle, + struct dma_attrs *attrs) +{ + /* attrs is not supported and ignored */ + dma_free_coherent(dev, size, cpu_addr, 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) + +extern dma_addr_t +dma_map_single(struct device *dev, void *ptr, size_t size, + enum dma_data_direction direction); + +extern void +dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, + enum dma_data_direction direction); + +extern int +dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction); + +extern void +dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, + enum dma_data_direction direction); + +extern dma_addr_t +dma_map_page(struct device *dev, struct page *page, unsigned long offset, + size_t size, enum dma_data_direction direction); + +extern void +dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, + enum dma_data_direction direction); + +extern void +dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction); + +extern 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); + +extern void +dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, + enum dma_data_direction direction); + +#define dma_sync_single_for_device dma_sync_single_for_cpu +#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu +#define dma_sync_sg_for_device dma_sync_sg_for_cpu + +extern int +dma_mapping_error(struct device *dev, dma_addr_t dma_addr); + +extern int +dma_supported(struct device *dev, u64 mask); + +extern int +dma_set_mask(struct device *dev, u64 mask); + +extern int +dma_get_cache_alignment(void); + +extern void +dma_cache_sync(struct device *dev, void *vaddr, size_t size, + enum dma_data_direction direction); + +#endif /* _ASM_GENERIC_DMA_MAPPING_H */ -- cgit v1.2.3-54-g00ecf