[net-next-2.6.git] / arch / mips / include / asm / dma-mapping.h

#ifndef _ASM_DMA_MAPPING_H
#define _ASM_DMA_MAPPING_H

#include <asm/scatterlist.h>
#include <asm/cache.h>

void *dma_alloc_noncoherent(struct device *dev, size_t size,
			   dma_addr_t *dma_handle, gfp_t flag);

void dma_free_noncoherent(struct device *dev, size_t size,
			 void *vaddr, dma_addr_t dma_handle);

void *dma_alloc_coherent(struct device *dev, size_t size,
			   dma_addr_t *dma_handle, gfp_t flag);

void dma_free_coherent(struct device *dev, size_t size,
			 void *vaddr, dma_addr_t dma_handle);

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 dma_addr_t dma_map_page(struct device *dev, struct page *page,
	unsigned long offset, size_t size, enum dma_data_direction direction);

static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
	size_t size, enum dma_data_direction direction)
{
	dma_unmap_single(dev, dma_address, size, direction);
}

extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
	int nhwentries, 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_for_device(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_single_range_for_device(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);
extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
	int nelems, enum dma_data_direction direction);
extern int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
extern int dma_supported(struct device *dev, u64 mask);

static inline int
dma_set_mask(struct device *dev, u64 mask)
{
	if(!dev->dma_mask || !dma_supported(dev, mask))
		return -EIO;

	*dev->dma_mask = mask;

	return 0;
}

static inline int
dma_get_cache_alignment(void)
{
	/* XXX Largest on any MIPS */
	return 128;
}

extern int dma_is_consistent(struct device *dev, dma_addr_t dma_addr);

extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
	       enum dma_data_direction direction);

#if 0
#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY

extern int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
	dma_addr_t device_addr, size_t size, int flags);
extern void dma_release_declared_memory(struct device *dev);
extern void * dma_mark_declared_memory_occupied(struct device *dev,
	dma_addr_t device_addr, size_t size);
#endif

#endif /* _ASM_DMA_MAPPING_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_DMA_MAPPING_H
	2	#define _ASM_DMA_MAPPING_H
	3
	4	#include <asm/scatterlist.h>
	5	#include <asm/cache.h>
	6
	7	void dma_alloc_noncoherent(struct device dev, size_t size,
185a8ff5	8	dma_addr_t *dma_handle, gfp_t flag);
1da177e4 LT	9
	10	void dma_free_noncoherent(struct device *dev, size_t size,
	11	void *vaddr, dma_addr_t dma_handle);
	12
	13	void dma_alloc_coherent(struct device dev, size_t size,
185a8ff5	14	dma_addr_t *dma_handle, gfp_t flag);
1da177e4 LT	15
	16	void dma_free_coherent(struct device *dev, size_t size,
	17	void *vaddr, dma_addr_t dma_handle);
	18
	19	extern dma_addr_t dma_map_single(struct device dev, void ptr, size_t size,
	20	enum dma_data_direction direction);
	21	extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
	22	size_t size, enum dma_data_direction direction);
	23	extern int dma_map_sg(struct device dev, struct scatterlist sg, int nents,
	24	enum dma_data_direction direction);
	25	extern dma_addr_t dma_map_page(struct device dev, struct page page,
	26	unsigned long offset, size_t size, enum dma_data_direction direction);
4f29c057 AN	27
	28	static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
	29	size_t size, enum dma_data_direction direction)
	30	{
	31	dma_unmap_single(dev, dma_address, size, direction);
	32	}
	33
1da177e4 LT	34	extern void dma_unmap_sg(struct device dev, struct scatterlist sg,
	35	int nhwentries, enum dma_data_direction direction);
	36	extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
	37	size_t size, enum dma_data_direction direction);
	38	extern void dma_sync_single_for_device(struct device *dev,
	39	dma_addr_t dma_handle, size_t size, enum dma_data_direction direction);
	40	extern void dma_sync_single_range_for_cpu(struct device *dev,
	41	dma_addr_t dma_handle, unsigned long offset, size_t size,
	42	enum dma_data_direction direction);
	43	extern void dma_sync_single_range_for_device(struct device *dev,
	44	dma_addr_t dma_handle, unsigned long offset, size_t size,
	45	enum dma_data_direction direction);
	46	extern void dma_sync_sg_for_cpu(struct device dev, struct scatterlist sg,
	47	int nelems, enum dma_data_direction direction);
	48	extern void dma_sync_sg_for_device(struct device dev, struct scatterlist sg,
	49	int nelems, enum dma_data_direction direction);
8d8bb39b	50	extern int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
1da177e4 LT	51	extern int dma_supported(struct device *dev, u64 mask);
	52
	53	static inline int
	54	dma_set_mask(struct device *dev, u64 mask)
	55	{
	56	if(!dev->dma_mask \|\| !dma_supported(dev, mask))
	57	return -EIO;
	58
	59	*dev->dma_mask = mask;
	60
	61	return 0;
	62	}
	63
	64	static inline int
	65	dma_get_cache_alignment(void)
	66	{
	67	/* XXX Largest on any MIPS */
	68	return 128;
	69	}
	70
f67637ee	71	extern int dma_is_consistent(struct device *dev, dma_addr_t dma_addr);
1da177e4	72
d3fa72e4	73	extern void dma_cache_sync(struct device dev, void vaddr, size_t size,
1da177e4 LT	74	enum dma_data_direction direction);
1da177e4 LT	75
84b47a95	76	#if 0
1da177e4 LT	77	#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
	78
	79	extern int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
	80	dma_addr_t device_addr, size_t size, int flags);
	81	extern void dma_release_declared_memory(struct device *dev);
	82	extern void * dma_mark_declared_memory_occupied(struct device *dev,
	83	dma_addr_t device_addr, size_t size);
84b47a95	84	#endif
1da177e4 LT	85
1da177e4 LT	86	#endif /* _ASM_DMA_MAPPING_H */