diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
| commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
| tree | aa5cc3760a27c3d57146498cb82fa549547de06c /include/linux/dma-mapping.h | |
| parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) | |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 728ef0746..9ea9aba28 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -70,6 +70,8 @@ struct dma_map_ops { int is_phys; }; +extern struct dma_map_ops dma_noop_ops; + #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) #define DMA_MASK_NONE 0x0ULL @@ -641,31 +643,40 @@ static inline void dmam_release_declared_memory(struct device *dev) } #endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */ -static inline void *dma_alloc_writecombine(struct device *dev, size_t size, - dma_addr_t *dma_addr, gfp_t gfp) +static inline void *dma_alloc_wc(struct device *dev, size_t size, + dma_addr_t *dma_addr, gfp_t gfp) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_alloc_attrs(dev, size, dma_addr, gfp, &attrs); } +#ifndef dma_alloc_writecombine +#define dma_alloc_writecombine dma_alloc_wc +#endif -static inline void dma_free_writecombine(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_addr) +static inline void dma_free_wc(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_addr) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_free_attrs(dev, size, cpu_addr, dma_addr, &attrs); } +#ifndef dma_free_writecombine +#define dma_free_writecombine dma_free_wc +#endif -static inline int dma_mmap_writecombine(struct device *dev, - struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) +static inline int dma_mmap_wc(struct device *dev, + struct vm_area_struct *vma, + void *cpu_addr, dma_addr_t dma_addr, + size_t size) { DEFINE_DMA_ATTRS(attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs); return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs); } +#ifndef dma_mmap_writecombine +#define dma_mmap_writecombine dma_mmap_wc +#endif #ifdef CONFIG_NEED_DMA_MAP_STATE #define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME |