Blame - include/linux/swiotlb.h - kernel/msm

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Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	1	#ifndef __LINUX_SWIOTLB_H
				2	#define __LINUX_SWIOTLB_H
				3
				4	#include <linux/types.h>
				5
				6	struct device;
				7	struct dma_attrs;
				8	struct scatterlist;
				9
Ian Campbell	0016fde	2008-12-16 12:17:27 -0800	[diff] [blame]	10	/*
				11	* Maximum allowable number of contiguous slabs to map,
				12	* must be a power of 2. What is the appropriate value ?
				13	* The complexity of {map,unmap}_single is linearly dependent on this value.
				14	*/
				15	#define IO_TLB_SEGSIZE 128
				16
Ian Campbell	0016fde	2008-12-16 12:17:27 -0800	[diff] [blame]	17	/*
				18	* log of the size of each IO TLB slab. The number of slabs is command line
				19	* controllable.
				20	*/
				21	#define IO_TLB_SHIFT 11
				22
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	23	extern void
				24	swiotlb_init(void);
				25
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	26	extern void
				27	swiotlb_alloc_coherent(struct device hwdev, size_t size,
				28	dma_addr_t *dma_handle, gfp_t flags);
				29
				30	extern void
				31	swiotlb_free_coherent(struct device *hwdev, size_t size,
				32	void *vaddr, dma_addr_t dma_handle);
				33
FUJITA Tomonori	f98eee8	2009-01-05 23:59:03 +0900	[diff] [blame]	34	extern dma_addr_t swiotlb_map_page(struct device dev, struct page page,
				35	unsigned long offset, size_t size,
				36	enum dma_data_direction dir,
				37	struct dma_attrs *attrs);
				38	extern void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
				39	size_t size, enum dma_data_direction dir,
				40	struct dma_attrs *attrs);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	41
				42	extern int
				43	swiotlb_map_sg(struct device hwdev, struct scatterlist sg, int nents,
				44	int direction);
				45
				46	extern void
				47	swiotlb_unmap_sg(struct device hwdev, struct scatterlist sg, int nents,
				48	int direction);
				49
				50	extern int
				51	swiotlb_map_sg_attrs(struct device hwdev, struct scatterlist sgl, int nelems,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	52	enum dma_data_direction dir, struct dma_attrs *attrs);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	53
				54	extern void
				55	swiotlb_unmap_sg_attrs(struct device hwdev, struct scatterlist sgl,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	56	int nelems, enum dma_data_direction dir,
				57	struct dma_attrs *attrs);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	58
				59	extern void
				60	swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	61	size_t size, enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	62
				63	extern void
				64	swiotlb_sync_sg_for_cpu(struct device hwdev, struct scatterlist sg,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	65	int nelems, enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	66
				67	extern void
				68	swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	69	size_t size, enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	70
				71	extern void
				72	swiotlb_sync_sg_for_device(struct device hwdev, struct scatterlist sg,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	73	int nelems, enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	74
				75	extern void
				76	swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	77	unsigned long offset, size_t size,
				78	enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	79
				80	extern void
				81	swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
				82	unsigned long offset, size_t size,
FUJITA Tomonori	160c1d8	2009-01-05 23:59:02 +0900	[diff] [blame]	83	enum dma_data_direction dir);
Joerg Roedel	1648993	2008-10-15 22:01:03 -0700	[diff] [blame]	84
				85	extern int
				86	swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
				87
				88	extern int
				89	swiotlb_dma_supported(struct device *hwdev, u64 mask);
				90
				91	#endif /* __LINUX_SWIOTLB_H */