drm/radeon: Sync to Linux 3.11
[dragonfly.git] / sys / dev / drm / radeon / radeon_prime.c
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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
926deccb 25 */
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26#include <drm/drmP.h>
27
28#include "radeon.h"
29#include <drm/radeon_drm.h>
30
b403bed8 31struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj)
926deccb 32{
b403bed8 33 struct radeon_bo *bo = gem_to_radeon_bo(obj);
926deccb 34 int npages = bo->tbo.num_pages;
926deccb 35
b403bed8 36 return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages);
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37}
38
b403bed8 39void *radeon_gem_prime_vmap(struct drm_gem_object *obj)
926deccb 40{
b403bed8 41 struct radeon_bo *bo = gem_to_radeon_bo(obj);
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42 int ret;
43
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44 ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages,
45 &bo->dma_buf_vmap);
b403bed8 46 if (ret)
926deccb 47 return ERR_PTR(ret);
b403bed8 48
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49 return bo->dma_buf_vmap.virtual;
50}
51
b403bed8 52void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
926deccb 53{
b403bed8 54 struct radeon_bo *bo = gem_to_radeon_bo(obj);
926deccb 55
b403bed8 56 ttm_bo_kunmap(&bo->dma_buf_vmap);
926deccb 57}
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58
59struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
60 size_t size,
61 struct sg_table *sg)
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62{
63 struct radeon_device *rdev = dev->dev_private;
64 struct radeon_bo *bo;
65 int ret;
66
67 ret = radeon_bo_create(rdev, size, PAGE_SIZE, false,
b403bed8 68 RADEON_GEM_DOMAIN_GTT, sg, &bo);
926deccb 69 if (ret)
b403bed8 70 return ERR_PTR(ret);
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71 bo->gem_base.driver_private = bo;
72
73 mutex_lock(&rdev->gem.mutex);
74 list_add_tail(&bo->list, &rdev->gem.objects);
75 mutex_unlock(&rdev->gem.mutex);
76
b403bed8 77 return &bo->gem_base;
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78}
79
b403bed8 80int radeon_gem_prime_pin(struct drm_gem_object *obj)
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81{
82 struct radeon_bo *bo = gem_to_radeon_bo(obj);
83 int ret = 0;
84
85 ret = radeon_bo_reserve(bo, false);
86 if (unlikely(ret != 0))
b403bed8 87 return ret;
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88
89 /* pin buffer into GTT */
90 ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
926deccb 91 radeon_bo_unreserve(bo);
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92 return ret;
93}
94
95void radeon_gem_prime_unpin(struct drm_gem_object *obj)
96{
97 struct radeon_bo *bo = gem_to_radeon_bo(obj);
98 int ret = 0;
99
100 ret = radeon_bo_reserve(bo, false);
101 if (unlikely(ret != 0))
102 return;
926deccb 103
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104 radeon_bo_unpin(bo);
105 radeon_bo_unreserve(bo);
926deccb 106}