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/*
* Copyright (C) 2015 Red Hat, Inc.
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*/
#include <drm/drmP.h>
#include "virtgpu_drv.h"
void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj)
{
struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(gem_obj);
if (obj)
virtio_gpu_object_unref(&obj);
}
struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev,
size_t size, bool kernel,
bool pinned)
{
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_object *obj;
int ret;
ret = virtio_gpu_object_create(vgdev, size, kernel, pinned, &obj);
if (ret)
return ERR_PTR(ret);
return obj;
}
int virtio_gpu_gem_create(struct drm_file *file,
struct drm_device *dev,
uint64_t size,
struct drm_gem_object **obj_p,
uint32_t *handle_p)
{
struct virtio_gpu_object *obj;
int ret;
u32 handle;
obj = virtio_gpu_alloc_object(dev, size, false, false);
if (IS_ERR(obj))
return PTR_ERR(obj);
ret = drm_gem_handle_create(file, &obj->gem_base, &handle);
if (ret) {
drm_gem_object_release(&obj->gem_base);
return ret;
}
*obj_p = &obj->gem_base;
/* drop reference from allocate - handle holds it now */
drm_gem_object_unreference_unlocked(&obj->gem_base);
*handle_p = handle;
return 0;
}
int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct virtio_gpu_device *vgdev = dev->dev_private;
struct drm_gem_object *gobj;
struct virtio_gpu_object *obj;
int ret;
uint32_t pitch;
uint32_t resid;
uint32_t format;
pitch = args->width * ((args->bpp + 1) / 8);
args->size = pitch * args->height;
args->size = ALIGN(args->size, PAGE_SIZE);
ret = virtio_gpu_gem_create(file_priv, dev, args->size, &gobj,
&args->handle);
if (ret)
goto fail;
format = virtio_gpu_translate_format(DRM_FORMAT_XRGB8888);
virtio_gpu_resource_id_get(vgdev, &resid);
virtio_gpu_cmd_create_resource(vgdev, resid, format,
args->width, args->height);
/* attach the object to the resource */
obj = gem_to_virtio_gpu_obj(gobj);
ret = virtio_gpu_object_attach(vgdev, obj, resid, NULL);
if (ret)
goto fail;
obj->dumb = true;
args->pitch = pitch;
return ret;
fail:
return ret;
}
int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
struct drm_device *dev,
uint32_t handle, uint64_t *offset_p)
{
struct drm_gem_object *gobj;
struct virtio_gpu_object *obj;
BUG_ON(!offset_p);
gobj = drm_gem_object_lookup(file_priv, handle);
if (gobj == NULL)
return -ENOENT;
obj = gem_to_virtio_gpu_obj(gobj);
*offset_p = virtio_gpu_object_mmap_offset(obj);
drm_gem_object_unreference_unlocked(gobj);
return 0;
}
int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
struct drm_file *file)
{
struct virtio_gpu_device *vgdev = obj->dev->dev_private;
struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
int r;
if (!vgdev->has_virgl_3d)
return 0;
r = virtio_gpu_object_reserve(qobj, false);
if (r)
return r;
virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
qobj->hw_res_handle);
virtio_gpu_object_unreserve(qobj);
return 0;
}
void virtio_gpu_gem_object_close(struct drm_gem_object *obj,
struct drm_file *file)
{
struct virtio_gpu_device *vgdev = obj->dev->dev_private;
struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
int r;
if (!vgdev->has_virgl_3d)
return;
r = virtio_gpu_object_reserve(qobj, false);
if (r)
return;
virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id,
qobj->hw_res_handle);
virtio_gpu_object_unreserve(qobj);
}
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