[mirror_ubuntu-kernels.git] / arch / arm64 / include / asm / dma-mapping.h

/*
 * Copyright (C) 2012 ARM Ltd.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_DMA_MAPPING_H
#define __ASM_DMA_MAPPING_H

#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/vmalloc.h>

#include <xen/xen.h>
#include <asm/xen/hypervisor.h>

static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
	return NULL;
}

/*
 * Do not use this function in a driver, it is only provided for
 * arch/arm/mm/xen.c, which is used by arm64 as well.
 */
static inline bool is_device_dma_coherent(struct device *dev)
{
	return dev->dma_coherent;
}

#endif	/* __KERNEL__ */
#endif	/* __ASM_DMA_MAPPING_H */
Commit	Line	Data
09b55412 CM	1	/*
	2	* Copyright (C) 2012 ARM Ltd.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16	#ifndef __ASM_DMA_MAPPING_H
	17	#define __ASM_DMA_MAPPING_H
	18
	19	#ifdef __KERNEL__
	20
	21	#include <linux/types.h>
	22	#include <linux/vmalloc.h>
	23
58c8b269 SS	24	#include <xen/xen.h>
	25	#include <asm/xen/hypervisor.h>
	26
e0586326	27	static inline const struct dma_map_ops get_arch_dma_ops(struct bus_type bus)
09b55412	28	{
9ab91e7c	29	return NULL;
09b55412 CM	30	}
09b55412 CM	31
886643b7 CH	32	/*
	33	* Do not use this function in a driver, it is only provided for
	34	* arch/arm/mm/xen.c, which is used by arm64 as well.
	35	*/
de7ee503 SS	36	static inline bool is_device_dma_coherent(struct device *dev)
de7ee503 SS	37	{
886643b7	38	return dev->dma_coherent;
de7ee503 SS	39	}
de7ee503 SS	40
09b55412 CM	41	#endif /* __KERNEL__ */
09b55412 CM	42	#endif /* __ASM_DMA_MAPPING_H */