[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_gem_dmabuf.h

/*
 * Copyright 2016 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef _I915_GEM_DMABUF_H_
#define _I915_GEM_DMABUF_H_

#include <linux/dma-buf.h>

static inline struct reservation_object *
i915_gem_object_get_dmabuf_resv(struct drm_i915_gem_object *obj)
{
	struct dma_buf *dma_buf;

	if (obj->base.dma_buf)
		dma_buf = obj->base.dma_buf;
	else if (obj->base.import_attach)
		dma_buf = obj->base.import_attach->dmabuf;
	else
		return NULL;

	return dma_buf->resv;
}

#endif
Commit	Line	Data
c37efb99 CW	1	/*
	2	* Copyright 2016 Intel Corporation
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the next
	12	* paragraph) shall be included in all copies or substantial portions of the
	13	* Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	21	* DEALINGS IN THE SOFTWARE.
	22	*
	23	*/
	24
	25	#ifndef _I915_GEM_DMABUF_H_
	26	#define _I915_GEM_DMABUF_H_
	27
	28	#include <linux/dma-buf.h>
	29
	30	static inline struct reservation_object *
	31	i915_gem_object_get_dmabuf_resv(struct drm_i915_gem_object *obj)
	32	{
	33	struct dma_buf *dma_buf;
	34
	35	if (obj->base.dma_buf)
	36	dma_buf = obj->base.dma_buf;
	37	else if (obj->base.import_attach)
	38	dma_buf = obj->base.import_attach->dmabuf;
	39	else
	40	return NULL;
	41
	42	return dma_buf->resv;
	43	}
	44
	45	#endif