74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* Copyright 2014 Canonical
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Andreas Pokorny
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*/
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#include "virtgpu_drv.h"
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/* Empty Implementations as there should not be any other driver for a virtual
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* device that might share buffers with virtgpu
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*/
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struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj)
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{
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struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
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if (!bo->tbo.ttm->pages || !bo->tbo.ttm->num_pages)
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/* should not happen */
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return ERR_PTR(-EINVAL);
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return drm_prime_pages_to_sg(bo->tbo.ttm->pages,
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bo->tbo.ttm->num_pages);
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}
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struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
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struct drm_device *dev, struct dma_buf_attachment *attach,
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struct sg_table *table)
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{
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return ERR_PTR(-ENODEV);
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}
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void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj)
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{
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struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
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int ret;
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ret = virtio_gpu_object_kmap(bo);
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if (ret)
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return NULL;
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return bo->vmap;
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}
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void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
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{
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virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj));
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}
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int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
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struct vm_area_struct *vma)
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{
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struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
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bo->gem_base.vma_node.vm_node.start = bo->tbo.vma_node.vm_node.start;
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return drm_gem_prime_mmap(obj, vma);
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}
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