diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_prime.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_prime.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c new file mode 100644 index 0000000..4940af7 --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -0,0 +1,98 @@ +/* + * 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> + +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, + size_t size, + struct sg_table *sg) +{ + struct radeon_device *rdev = dev->dev_private; + struct radeon_bo *bo; + int ret; + + ret = radeon_bo_create(rdev, size, PAGE_SIZE, false, + RADEON_GEM_DOMAIN_GTT, sg, &bo); + if (ret) + return ERR_PTR(ret); + bo->gem_base.driver_private = bo; + + 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); + if (ret) { + radeon_bo_unreserve(bo); + return ret; + } + radeon_bo_unreserve(bo); + + return 0; +} |