[mirror_ubuntu-artful-kernel.git] / include / linux / dma-debug.h

/*
 * Copyright (C) 2008 Advanced Micro Devices, Inc.
 *
 * Author: Joerg Roedel <joerg.roedel@amd.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef __DMA_DEBUG_H
#define __DMA_DEBUG_H

#include <linux/types.h>

struct device;
struct scatterlist;

#ifdef CONFIG_DMA_API_DEBUG

extern void dma_debug_init(u32 num_entries);

extern void debug_dma_map_page(struct device *dev, struct page *page,
			       size_t offset, size_t size,
			       int direction, dma_addr_t dma_addr,
			       bool map_single);

extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
				 size_t size, int direction, bool map_single);

extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
			     int nents, int mapped_ents, int direction);

extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
			       int nelems, int dir);

extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
				     dma_addr_t dma_addr, void *virt);

extern void debug_dma_free_coherent(struct device *dev, size_t size,
				    void *virt, dma_addr_t addr);

#else /* CONFIG_DMA_API_DEBUG */

static inline void dma_debug_init(u32 num_entries)
{
}

static inline void debug_dma_map_page(struct device *dev, struct page *page,
				      size_t offset, size_t size,
				      int direction, dma_addr_t dma_addr,
				      bool map_single)
{
}

static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
					size_t size, int direction,
					bool map_single)
{
}

static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
				    int nents, int mapped_ents, int direction)
{
}

static inline void debug_dma_unmap_sg(struct device *dev,
				      struct scatterlist *sglist,
				      int nelems, int dir)
{
}

static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
					    dma_addr_t dma_addr, void *virt)
{
}

static inline void debug_dma_free_coherent(struct device *dev, size_t size,
					   void *virt, dma_addr_t addr)
{
}

#endif /* CONFIG_DMA_API_DEBUG */

#endif /* __DMA_DEBUG_H */
Commit	Line	Data
f2f45e5f JR	1	/*
	2	* Copyright (C) 2008 Advanced Micro Devices, Inc.
	3	*
	4	* Author: Joerg Roedel <joerg.roedel@amd.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License version 2 as published
	8	* by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18	*/
	19
	20	#ifndef __DMA_DEBUG_H
	21	#define __DMA_DEBUG_H
	22
6bf07871 JR	23	#include <linux/types.h>
6bf07871 JR	24
f2f45e5f	25	struct device;
972aa45c	26	struct scatterlist;
f2f45e5f	27
6bf07871 JR	28	#ifdef CONFIG_DMA_API_DEBUG
	29
	30	extern void dma_debug_init(u32 num_entries);
	31
f62bc980 JR	32	extern void debug_dma_map_page(struct device dev, struct page page,
	33	size_t offset, size_t size,
	34	int direction, dma_addr_t dma_addr,
	35	bool map_single);
	36
	37	extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
	38	size_t size, int direction, bool map_single);
	39
972aa45c JR	40	extern void debug_dma_map_sg(struct device dev, struct scatterlist sg,
	41	int nents, int mapped_ents, int direction);
	42
	43	extern void debug_dma_unmap_sg(struct device dev, struct scatterlist sglist,
	44	int nelems, int dir);
f62bc980	45
6bfd4498 JR	46	extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
	47	dma_addr_t dma_addr, void *virt);
	48
	49	extern void debug_dma_free_coherent(struct device *dev, size_t size,
	50	void *virt, dma_addr_t addr);
	51
6bf07871 JR	52	#else /* CONFIG_DMA_API_DEBUG */
	53
	54	static inline void dma_debug_init(u32 num_entries)
	55	{
	56	}
	57
f62bc980 JR	58	static inline void debug_dma_map_page(struct device dev, struct page page,
	59	size_t offset, size_t size,
	60	int direction, dma_addr_t dma_addr,
	61	bool map_single)
	62	{
	63	}
	64
	65	static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
	66	size_t size, int direction,
	67	bool map_single)
	68	{
	69	}
	70
972aa45c JR	71	static inline void debug_dma_map_sg(struct device dev, struct scatterlist sg,
	72	int nents, int mapped_ents, int direction)
	73	{
	74	}
	75
	76	static inline void debug_dma_unmap_sg(struct device *dev,
	77	struct scatterlist *sglist,
	78	int nelems, int dir)
	79	{
	80	}
f62bc980	81
6bfd4498 JR	82	static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
	83	dma_addr_t dma_addr, void *virt)
	84	{
	85	}
	86
	87	static inline void debug_dma_free_coherent(struct device *dev, size_t size,
	88	void *virt, dma_addr_t addr)
	89	{
	90	}
	91
6bf07871 JR	92	#endif /* CONFIG_DMA_API_DEBUG */
6bf07871 JR	93
f2f45e5f	94	#endif /* __DMA_DEBUG_H */