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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;
- 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;
- virtio_gpu_resource_id_get(vgdev, &resid);
- virtio_gpu_cmd_create_resource(vgdev, resid,
- 2, 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_destroy(struct drm_file *file_priv,
- struct drm_device *dev,
- uint32_t handle)
- {
- return drm_gem_handle_delete(file_priv, handle);
- }
- 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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