[net-next-2.6.git] / include / asm-generic / dma-mapping-common.h

#ifndef _ASM_GENERIC_DMA_MAPPING_H
#define _ASM_GENERIC_DMA_MAPPING_H

#include <linux/kmemcheck.h>
#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <linux/dma-attrs.h>

static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
					      size_t size,
					      enum dma_data_direction dir,
					      struct dma_attrs *attrs)
{
	struct dma_map_ops *ops = get_dma_ops(dev);
	dma_addr_t addr;

	kmemcheck_mark_initialized(ptr, size);
	BUG_ON(!valid_dma_direction(dir));
	addr = ops->map_page(dev, virt_to_page(ptr),
			     (unsigned long)ptr & ~PAGE_MASK, size,
			     dir, attrs);
	debug_dma_map_page(dev, virt_to_page(ptr),
			   (unsigned long)ptr & ~PAGE_MASK, size,
			   dir, addr, true);
	return addr;
}

static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
					  size_t size,
					  enum dma_data_direction dir,
					  struct dma_attrs *attrs)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->unmap_page)
		ops->unmap_page(dev, addr, size, dir, attrs);
	debug_dma_unmap_page(dev, addr, size, dir, true);
}

static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
				   int nents, enum dma_data_direction dir,
				   struct dma_attrs *attrs)
{
	struct dma_map_ops *ops = get_dma_ops(dev);
	int i, ents;
	struct scatterlist *s;

	for_each_sg(sg, s, nents, i)
		kmemcheck_mark_initialized(sg_virt(s), s->length);
	BUG_ON(!valid_dma_direction(dir));
	ents = ops->map_sg(dev, sg, nents, dir, attrs);
	debug_dma_map_sg(dev, sg, nents, ents, dir);

	return ents;
}

static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
				      int nents, enum dma_data_direction dir,
				      struct dma_attrs *attrs)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	debug_dma_unmap_sg(dev, sg, nents, dir);
	if (ops->unmap_sg)
		ops->unmap_sg(dev, sg, nents, dir, attrs);
}

static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
				      size_t offset, size_t size,
				      enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);
	dma_addr_t addr;

	kmemcheck_mark_initialized(page_address(page) + offset, size);
	BUG_ON(!valid_dma_direction(dir));
	addr = ops->map_page(dev, page, offset, size, dir, NULL);
	debug_dma_map_page(dev, page, offset, size, dir, addr, false);

	return addr;
}

static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
				  size_t size, enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->unmap_page)
		ops->unmap_page(dev, addr, size, dir, NULL);
	debug_dma_unmap_page(dev, addr, size, dir, false);
}

static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
					   size_t size,
					   enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->sync_single_for_cpu)
		ops->sync_single_for_cpu(dev, addr, size, dir);
	debug_dma_sync_single_for_cpu(dev, addr, size, dir);
}

static inline void dma_sync_single_for_device(struct device *dev,
					      dma_addr_t addr, size_t size,
					      enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->sync_single_for_device)
		ops->sync_single_for_device(dev, addr, size, dir);
	debug_dma_sync_single_for_device(dev, addr, size, dir);
}

static inline void dma_sync_single_range_for_cpu(struct device *dev,
						 dma_addr_t addr,
						 unsigned long offset,
						 size_t size,
						 enum dma_data_direction dir)
{
	dma_sync_single_for_cpu(dev, addr + offset, size, dir);
}

static inline void dma_sync_single_range_for_device(struct device *dev,
						    dma_addr_t addr,
						    unsigned long offset,
						    size_t size,
						    enum dma_data_direction dir)
{
	dma_sync_single_for_device(dev, addr + offset, size, dir);
}

static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
		    int nelems, enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->sync_sg_for_cpu)
		ops->sync_sg_for_cpu(dev, sg, nelems, dir);
	debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
}

static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
		       int nelems, enum dma_data_direction dir)
{
	struct dma_map_ops *ops = get_dma_ops(dev);

	BUG_ON(!valid_dma_direction(dir));
	if (ops->sync_sg_for_device)
		ops->sync_sg_for_device(dev, sg, nelems, dir);
	debug_dma_sync_sg_for_device(dev, sg, nelems, dir);

}

#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)

#endif
Commit	Line	Data
c147d8ea FT	1	#ifndef _ASM_GENERIC_DMA_MAPPING_H
	2	#define _ASM_GENERIC_DMA_MAPPING_H
	3
	4	#include <linux/kmemcheck.h>
	5	#include <linux/scatterlist.h>
	6	#include <linux/dma-debug.h>
	7	#include <linux/dma-attrs.h>
	8
	9	static inline dma_addr_t dma_map_single_attrs(struct device dev, void ptr,
	10	size_t size,
	11	enum dma_data_direction dir,
	12	struct dma_attrs *attrs)
	13	{
	14	struct dma_map_ops *ops = get_dma_ops(dev);
	15	dma_addr_t addr;
	16
	17	kmemcheck_mark_initialized(ptr, size);
	18	BUG_ON(!valid_dma_direction(dir));
	19	addr = ops->map_page(dev, virt_to_page(ptr),
	20	(unsigned long)ptr & ~PAGE_MASK, size,
	21	dir, attrs);
	22	debug_dma_map_page(dev, virt_to_page(ptr),
	23	(unsigned long)ptr & ~PAGE_MASK, size,
	24	dir, addr, true);
	25	return addr;
	26	}
	27
	28	static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
	29	size_t size,
	30	enum dma_data_direction dir,
	31	struct dma_attrs *attrs)
	32	{
	33	struct dma_map_ops *ops = get_dma_ops(dev);
	34
	35	BUG_ON(!valid_dma_direction(dir));
	36	if (ops->unmap_page)
	37	ops->unmap_page(dev, addr, size, dir, attrs);
	38	debug_dma_unmap_page(dev, addr, size, dir, true);
	39	}
	40
	41	static inline int dma_map_sg_attrs(struct device dev, struct scatterlist sg,
	42	int nents, enum dma_data_direction dir,
	43	struct dma_attrs *attrs)
	44	{
	45	struct dma_map_ops *ops = get_dma_ops(dev);
	46	int i, ents;
	47	struct scatterlist *s;
	48
	49	for_each_sg(sg, s, nents, i)
	50	kmemcheck_mark_initialized(sg_virt(s), s->length);
	51	BUG_ON(!valid_dma_direction(dir));
	52	ents = ops->map_sg(dev, sg, nents, dir, attrs);
	53	debug_dma_map_sg(dev, sg, nents, ents, dir);
	54
	55	return ents;
	56	}
	57
	58	static inline void dma_unmap_sg_attrs(struct device dev, struct scatterlist sg,
	59	int nents, enum dma_data_direction dir,
	60	struct dma_attrs *attrs)
	61	{
	62	struct dma_map_ops *ops = get_dma_ops(dev);
	63
	64	BUG_ON(!valid_dma_direction(dir));
65	debug_dma_unmap_sg(dev, sg, nents, dir);
66	if (ops->unmap_sg)
67	ops->unmap_sg(dev, sg, nents, dir, attrs);
68	}
69
70	static inline dma_addr_t dma_map_page(struct device dev, struct page page,
71	size_t offset, size_t size,
72	enum dma_data_direction dir)
73	{
74	struct dma_map_ops *ops = get_dma_ops(dev);
75	dma_addr_t addr;
76
77	kmemcheck_mark_initialized(page_address(page) + offset, size);
78	BUG_ON(!valid_dma_direction(dir));
79	addr = ops->map_page(dev, page, offset, size, dir, NULL);
80	debug_dma_map_page(dev, page, offset, size, dir, addr, false);
81
82	return addr;
83	}
84
85	static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
86	size_t size, enum dma_data_direction dir)
87	{
88	struct dma_map_ops *ops = get_dma_ops(dev);
89
90	BUG_ON(!valid_dma_direction(dir));
91	if (ops->unmap_page)
92	ops->unmap_page(dev, addr, size, dir, NULL);
93	debug_dma_unmap_page(dev, addr, size, dir, false);
94	}
95
96	static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
97	size_t size,
98	enum dma_data_direction dir)
99	{
100	struct dma_map_ops *ops = get_dma_ops(dev);
101
102	BUG_ON(!valid_dma_direction(dir));
103	if (ops->sync_single_for_cpu)
104	ops->sync_single_for_cpu(dev, addr, size, dir);
105	debug_dma_sync_single_for_cpu(dev, addr, size, dir);
c147d8ea FT	106	}
	107
	108	static inline void dma_sync_single_for_device(struct device *dev,
	109	dma_addr_t addr, size_t size,
	110	enum dma_data_direction dir)
	111	{
	112	struct dma_map_ops *ops = get_dma_ops(dev);
	113
	114	BUG_ON(!valid_dma_direction(dir));
	115	if (ops->sync_single_for_device)
	116	ops->sync_single_for_device(dev, addr, size, dir);
	117	debug_dma_sync_single_for_device(dev, addr, size, dir);
c147d8ea FT	118	}
	119
	120	static inline void dma_sync_single_range_for_cpu(struct device *dev,
	121	dma_addr_t addr,
	122	unsigned long offset,
	123	size_t size,
	124	enum dma_data_direction dir)
	125	{
5fd75a78	126	dma_sync_single_for_cpu(dev, addr + offset, size, dir);
c147d8ea FT	127	}
	128
	129	static inline void dma_sync_single_range_for_device(struct device *dev,
	130	dma_addr_t addr,
	131	unsigned long offset,
	132	size_t size,
	133	enum dma_data_direction dir)
	134	{
5fd75a78	135	dma_sync_single_for_device(dev, addr + offset, size, dir);
c147d8ea FT	136	}
	137
	138	static inline void
	139	dma_sync_sg_for_cpu(struct device dev, struct scatterlist sg,
	140	int nelems, enum dma_data_direction dir)
	141	{
	142	struct dma_map_ops *ops = get_dma_ops(dev);
	143
	144	BUG_ON(!valid_dma_direction(dir));
	145	if (ops->sync_sg_for_cpu)
	146	ops->sync_sg_for_cpu(dev, sg, nelems, dir);
	147	debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
c147d8ea FT	148	}
	149
	150	static inline void
	151	dma_sync_sg_for_device(struct device dev, struct scatterlist sg,
	152	int nelems, enum dma_data_direction dir)
	153	{
	154	struct dma_map_ops *ops = get_dma_ops(dev);
	155
	156	BUG_ON(!valid_dma_direction(dir));
	157	if (ops->sync_sg_for_device)
	158	ops->sync_sg_for_device(dev, sg, nelems, dir);
	159	debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
	160
c147d8ea FT	161	}
	162
	163	#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
	164	#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
	165	#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
	166	#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
	167
	168	#endif