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 * 26 * $FreeBSD: head/sys/dev/drm2/radeon/radeon_prime.c 254885 2013-08-25 19:37:15Z dumbbell $ 27 */ 28 29 #include <drm/drmP.h> 30 31 #include "radeon.h" 32 #include <drm/radeon_drm.h> 33 34 struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj) 35 { 36 struct radeon_bo *bo = gem_to_radeon_bo(obj); 37 int npages = bo->tbo.num_pages; 38 39 return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages); 40 } 41 42 void *radeon_gem_prime_vmap(struct drm_gem_object *obj) 43 { 44 struct radeon_bo *bo = gem_to_radeon_bo(obj); 45 int ret; 46 47 ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, 48 &bo->dma_buf_vmap); 49 if (ret) 50 return ERR_PTR(ret); 51 52 return bo->dma_buf_vmap.virtual; 53 } 54 55 void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) 56 { 57 struct radeon_bo *bo = gem_to_radeon_bo(obj); 58 59 ttm_bo_kunmap(&bo->dma_buf_vmap); 60 } 61 62 struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev, 63 size_t size, 64 struct sg_table *sg) 65 { 66 struct radeon_device *rdev = dev->dev_private; 67 struct radeon_bo *bo; 68 int ret; 69 70 ret = radeon_bo_create(rdev, size, PAGE_SIZE, false, 71 RADEON_GEM_DOMAIN_GTT, sg, &bo); 72 if (ret) 73 return ERR_PTR(ret); 74 bo->gem_base.driver_private = bo; 75 76 mutex_lock(&rdev->gem.mutex); 77 list_add_tail(&bo->list, &rdev->gem.objects); 78 mutex_unlock(&rdev->gem.mutex); 79 80 return &bo->gem_base; 81 } 82 83 int radeon_gem_prime_pin(struct drm_gem_object *obj) 84 { 85 struct radeon_bo *bo = gem_to_radeon_bo(obj); 86 int ret = 0; 87 88 ret = radeon_bo_reserve(bo, false); 89 if (unlikely(ret != 0)) 90 return ret; 91 92 /* pin buffer into GTT */ 93 ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL); 94 if (ret) { 95 radeon_bo_unreserve(bo); 96 return ret; 97 } 98 radeon_bo_unreserve(bo); 99 100 return 0; 101 } 102