--- /dev/null
+/*
+ * 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(dev, 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);
+}
Code Review / kvmfornfv.git / blobdiff