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/*
* Copyright 2014 Canonical
*
* 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: Andreas Pokorny
*/
#include "virtgpu_drv.h"
/* Empty Implementations as there should not be any other driver for a virtual
* device that might share buffers with virtgpu
*/
struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj)
{
struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
if (!bo->tbo.ttm->pages || !bo->tbo.ttm->num_pages)
/* should not happen */
return ERR_PTR(-EINVAL);
return drm_prime_pages_to_sg(bo->tbo.ttm->pages,
bo->tbo.ttm->num_pages);
}
void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj)
{
struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
int ret;
ret = virtio_gpu_object_kmap(bo);
if (ret)
return NULL;
return bo->vmap;
}
void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
{
virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj));
}
int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma)
{
struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
bo->gem_base.vma_node.vm_node.start = bo->tbo.vma_node.vm_node.start;
return drm_gem_prime_mmap(obj, vma);
}
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