| /* |
| * Copyright 2011 Red Hat 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. |
| * |
| * Authors: Dave Airlie |
| */ |
| |
| #include <drm/drmP.h> |
| #include <linux/dma-buf.h> |
| |
| #include "nouveau_drm.h" |
| #include "nouveau_gem.h" |
| |
| struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| int npages = nvbo->bo.num_pages; |
| |
| return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages); |
| } |
| |
| void *nouveau_gem_prime_vmap(struct drm_gem_object *obj) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| int ret; |
| |
| ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.num_pages, |
| &nvbo->dma_buf_vmap); |
| if (ret) |
| return ERR_PTR(ret); |
| |
| return nvbo->dma_buf_vmap.virtual; |
| } |
| |
| void nouveau_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| |
| ttm_bo_kunmap(&nvbo->dma_buf_vmap); |
| } |
| |
| struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev, |
| struct dma_buf_attachment *attach, |
| struct sg_table *sg) |
| { |
| struct nouveau_bo *nvbo; |
| u32 flags = 0; |
| int ret; |
| |
| flags = TTM_PL_FLAG_TT; |
| |
| ret = nouveau_bo_new(dev, attach->dmabuf->size, 0, flags, 0, 0, |
| sg, &nvbo); |
| if (ret) |
| return ERR_PTR(ret); |
| |
| nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART; |
| |
| /* Initialize the embedded gem-object. We return a single gem-reference |
| * to the caller, instead of a normal nouveau_bo ttm reference. */ |
| ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size); |
| if (ret) { |
| nouveau_bo_ref(NULL, &nvbo); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| return &nvbo->gem; |
| } |
| |
| int nouveau_gem_prime_pin(struct drm_gem_object *obj) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| int ret; |
| |
| /* pin buffer into GTT */ |
| ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT); |
| if (ret) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| void nouveau_gem_prime_unpin(struct drm_gem_object *obj) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| |
| nouveau_bo_unpin(nvbo); |
| } |
| |
| struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *obj) |
| { |
| struct nouveau_bo *nvbo = nouveau_gem_object(obj); |
| |
| return nvbo->bo.resv; |
| } |