mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 20:01:55 +00:00
aaf4f97f26
Since commit 0049fb2603 ("OMAPFB: use
dma_alloc_attrs to allocate memory") we have one non-arch user of
dma_{alloc,free}_attrs().
Hence provide these functions, as wrappers around
dma_{alloc,free}_coherent().
Note that most architectures do it the other way around. But as these are
dummy functions, we don't care.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
#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 */
|