[linux-2.6-block.git] / drivers / gpu / drm / radeon / radeon_prime.c

/*
 * Copyright 2012 Advanced Micro Devices, Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * based on nouveau_prime.c
 *
 * Authors: Alex Deucher
 */
#include <drm/drmP.h>

#include "radeon.h"
#include <drm/radeon_drm.h>
#include <linux/dma-buf.h>

struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	int npages = bo->tbo.num_pages;

	return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
}

void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	int ret;

	ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
			  &bo->dma_buf_vmap);
	if (ret)
		return ERR_PTR(ret);

	return bo->dma_buf_vmap.virtual;
}

void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);

	ttm_bo_kunmap(&bo->dma_buf_vmap);
}

struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
							struct dma_buf_attachment *attach,
							struct sg_table *sg)
{
	struct reservation_object *resv = attach->dmabuf->resv;
	struct radeon_device *rdev = dev->dev_private;
	struct radeon_bo *bo;
	int ret;

	ww_mutex_lock(&resv->lock, NULL);
	ret = radeon_bo_create(rdev, attach->dmabuf->size, PAGE_SIZE, false,
			       RADEON_GEM_DOMAIN_GTT, 0, sg, resv, &bo);
	ww_mutex_unlock(&resv->lock);
	if (ret)
		return ERR_PTR(ret);

	mutex_lock(&rdev->gem.mutex);
	list_add_tail(&bo->list, &rdev->gem.objects);
	mutex_unlock(&rdev->gem.mutex);

	return &bo->gem_base;
}

int radeon_gem_prime_pin(struct drm_gem_object *obj)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	int ret = 0;

	ret = radeon_bo_reserve(bo, false);
	if (unlikely(ret != 0))
		return ret;

	/* pin buffer into GTT */
	ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
	radeon_bo_unreserve(bo);
	return ret;
}

void radeon_gem_prime_unpin(struct drm_gem_object *obj)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	int ret = 0;

	ret = radeon_bo_reserve(bo, false);
	if (unlikely(ret != 0))
		return;

	radeon_bo_unpin(bo);
	radeon_bo_unreserve(bo);
}


struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj)
{
	struct radeon_bo *bo = gem_to_radeon_bo(obj);

	return bo->tbo.resv;
}

struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
					struct drm_gem_object *gobj,
					int flags)
{
	struct radeon_bo *bo = gem_to_radeon_bo(gobj);
	if (radeon_ttm_tt_has_userptr(bo->tbo.ttm))
		return ERR_PTR(-EPERM);
	return drm_gem_prime_export(dev, gobj, flags);
}
Commit	Line	Data
40f5cf99 AD	1	/*
	2	* Copyright 2012 Advanced Micro Devices, Inc.
	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 shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* based on nouveau_prime.c
	23	*
	24	* Authors: Alex Deucher
	25	*/
760285e7	26	#include <drm/drmP.h>
40f5cf99 AD	27
40f5cf99 AD	28	#include "radeon.h"
760285e7	29	#include <drm/radeon_drm.h>
b5e9c1a2	30	#include <linux/dma-buf.h>
40f5cf99	31
1e6d17a5	32	struct sg_table radeon_gem_prime_get_sg_table(struct drm_gem_object obj)
40f5cf99	33	{
1e6d17a5	34	struct radeon_bo *bo = gem_to_radeon_bo(obj);
40f5cf99	35	int npages = bo->tbo.num_pages;
40f5cf99	36
1e6d17a5	37	return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
40f5cf99 AD	38	}
40f5cf99 AD	39
1e6d17a5	40	void radeon_gem_prime_vmap(struct drm_gem_object obj)
946c7491	41	{
1e6d17a5	42	struct radeon_bo *bo = gem_to_radeon_bo(obj);
63bc620b DA	43	int ret;
63bc620b DA	44
63bc620b DA	45	ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
63bc620b DA	46	&bo->dma_buf_vmap);
1e6d17a5	47	if (ret)
63bc620b	48	return ERR_PTR(ret);
1e6d17a5	49
63bc620b DA	50	return bo->dma_buf_vmap.virtual;
	51	}
	52
1e6d17a5	53	void radeon_gem_prime_vunmap(struct drm_gem_object obj, void vaddr)
63bc620b	54	{
1e6d17a5	55	struct radeon_bo *bo = gem_to_radeon_bo(obj);
63bc620b	56
1e6d17a5	57	ttm_bo_kunmap(&bo->dma_buf_vmap);
63bc620b	58	}
1e6d17a5 AP	59
1e6d17a5 AP	60	struct drm_gem_object radeon_gem_prime_import_sg_table(struct drm_device dev,
b5e9c1a2	61	struct dma_buf_attachment *attach,
1e6d17a5	62	struct sg_table *sg)
40f5cf99	63	{
831b6966	64	struct reservation_object *resv = attach->dmabuf->resv;
40f5cf99 AD	65	struct radeon_device *rdev = dev->dev_private;
	66	struct radeon_bo *bo;
	67	int ret;
	68
831b6966	69	ww_mutex_lock(&resv->lock, NULL);
b5e9c1a2	70	ret = radeon_bo_create(rdev, attach->dmabuf->size, PAGE_SIZE, false,
831b6966 ML	71	RADEON_GEM_DOMAIN_GTT, 0, sg, resv, &bo);
831b6966 ML	72	ww_mutex_unlock(&resv->lock);
40f5cf99	73	if (ret)
1e6d17a5	74	return ERR_PTR(ret);
40f5cf99 AD	75
	76	mutex_lock(&rdev->gem.mutex);
	77	list_add_tail(&bo->list, &rdev->gem.objects);
	78	mutex_unlock(&rdev->gem.mutex);
	79
1e6d17a5	80	return &bo->gem_base;
40f5cf99 AD	81	}
40f5cf99 AD	82
1e6d17a5	83	int radeon_gem_prime_pin(struct drm_gem_object *obj)
40f5cf99 AD	84	{
	85	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	86	int ret = 0;
	87
489797d5 DA	88	ret = radeon_bo_reserve(bo, false);
489797d5 DA	89	if (unlikely(ret != 0))
1e6d17a5	90	return ret;
489797d5	91
40f5cf99 AD	92	/* pin buffer into GTT */
40f5cf99 AD	93	ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
489797d5	94	radeon_bo_unreserve(bo);
280cf211 ML	95	return ret;
	96	}
	97
	98	void radeon_gem_prime_unpin(struct drm_gem_object *obj)
	99	{
	100	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	101	int ret = 0;
40f5cf99	102
280cf211 ML	103	ret = radeon_bo_reserve(bo, false);
	104	if (unlikely(ret != 0))
	105	return;
	106
	107	radeon_bo_unpin(bo);
	108	radeon_bo_unreserve(bo);
40f5cf99	109	}
3aac4502 ML	110
	111
	112	struct reservation_object radeon_gem_prime_res_obj(struct drm_gem_object obj)
	113	{
	114	struct radeon_bo *bo = gem_to_radeon_bo(obj);
	115
	116	return bo->tbo.resv;
	117	}
484048db	118
f72a113a CK	119	struct dma_buf radeon_gem_prime_export(struct drm_device dev,
	120	struct drm_gem_object *gobj,
	121	int flags)
	122	{
	123	struct radeon_bo *bo = gem_to_radeon_bo(gobj);
	124	if (radeon_ttm_tt_has_userptr(bo->tbo.ttm))
	125	return ERR_PTR(-EPERM);
	126	return drm_gem_prime_export(dev, gobj, flags);
	127	}