[mirror_ubuntu-zesty-kernel.git] / arch / openrisc / include / asm / dma-mapping.h

/*
 * OpenRISC Linux
 *
 * Linux architectural port borrowing liberally from similar works of
 * others.  All original copyrights apply as per the original source
 * declaration.
 *
 * OpenRISC implementation:
 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __ASM_OPENRISC_DMA_MAPPING_H
#define __ASM_OPENRISC_DMA_MAPPING_H

/*
 * See Documentation/DMA-API-HOWTO.txt and
 * Documentation/DMA-API.txt for documentation.
 */

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

#define DMA_ERROR_CODE		(~(dma_addr_t)0x0)

extern struct dma_map_ops or1k_dma_map_ops;

static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
	return &or1k_dma_map_ops;
}

#define HAVE_ARCH_DMA_SUPPORTED 1
static inline int dma_supported(struct device *dev, u64 dma_mask)
{
	/* Support 32 bit DMA mask exclusively */
	return dma_mask == DMA_BIT_MASK(32);
}

#endif	/* __ASM_OPENRISC_DMA_MAPPING_H */
Commit	Line	Data
a39af6f7 JB	1	/*
	2	* OpenRISC Linux
	3	*
	4	* Linux architectural port borrowing liberally from similar works of
	5	* others. All original copyrights apply as per the original source
	6	* declaration.
	7	*
	8	* OpenRISC implementation:
	9	* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*/
	16
	17	#ifndef __ASM_OPENRISC_DMA_MAPPING_H
	18	#define __ASM_OPENRISC_DMA_MAPPING_H
	19
	20	/*
395cf969	21	* See Documentation/DMA-API-HOWTO.txt and
a39af6f7	22	* Documentation/DMA-API.txt for documentation.
a39af6f7 JB	23	*/
	24
	25	#include <linux/dma-debug.h>
a39af6f7	26	#include <linux/kmemcheck.h>
7b903e6c	27	#include <linux/dma-mapping.h>
a39af6f7 JB	28
	29	#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
	30
7b903e6c	31	extern struct dma_map_ops or1k_dma_map_ops;
a39af6f7	32
7b903e6c	33	static inline struct dma_map_ops get_dma_ops(struct device dev)
a39af6f7	34	{
7b903e6c	35	return &or1k_dma_map_ops;
a39af6f7 JB	36	}
a39af6f7 JB	37
ee196371	38	#define HAVE_ARCH_DMA_SUPPORTED 1
a39af6f7 JB	39	static inline int dma_supported(struct device *dev, u64 dma_mask)
	40	{
	41	/* Support 32 bit DMA mask exclusively */
707b38a0 JB	42	return dma_mask == DMA_BIT_MASK(32);
	43	}
	44
a39af6f7	45	#endif /* __ASM_OPENRISC_DMA_MAPPING_H */