From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/nouveau/nouveau_prime.c | 115 ++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nouveau_prime.c (limited to 'drivers/gpu/drm/nouveau/nouveau_prime.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c new file mode 100644 index 000000000..dd32ad6db --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -0,0 +1,115 @@ +/* + * 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 +#include + +#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; + struct reservation_object *robj = attach->dmabuf->resv; + u32 flags = 0; + int ret; + + flags = TTM_PL_FLAG_TT; + + ww_mutex_lock(&robj->lock, NULL); + ret = nouveau_bo_new(dev, attach->dmabuf->size, 0, flags, 0, 0, + sg, robj, &nvbo); + ww_mutex_unlock(&robj->lock); + 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, false); + 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; +} -- cgit v1.2.3-54-g00ecf