Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1298 insertions, 0 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
new file mode 100644
index 000000000..208e9434c
--- /dev/null
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -0,0 +1,1298 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * Authors:
+ *    Dave Airlie <airlied@redhat.com>
+ *    Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * 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
+ * VA LINUX SYSTEMS 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 <linux/dma-mapping.h>
+#include <linux/virtio.h>
+#include <linux/virtio_config.h>
+#include <linux/virtio_ring.h>
+
+#include <drm/drm_edid.h>
+
+#include "virtgpu_drv.h"
+#include "virtgpu_trace.h"
+
+#define MAX_INLINE_CMD_SIZE   96
+#define MAX_INLINE_RESP_SIZE  24
+#define VBUFFER_SIZE          (sizeof(struct virtio_gpu_vbuffer) \
+			       + MAX_INLINE_CMD_SIZE		 \
+			       + MAX_INLINE_RESP_SIZE)
+
+static void convert_to_hw_box(struct virtio_gpu_box *dst,
+			      const struct drm_virtgpu_3d_box *src)
+{
+	dst->x = cpu_to_le32(src->x);
+	dst->y = cpu_to_le32(src->y);
+	dst->z = cpu_to_le32(src->z);
+	dst->w = cpu_to_le32(src->w);
+	dst->h = cpu_to_le32(src->h);
+	dst->d = cpu_to_le32(src->d);
+}
+
+void virtio_gpu_ctrl_ack(struct virtqueue *vq)
+{
+	struct drm_device *dev = vq->vdev->priv;
+	struct virtio_gpu_device *vgdev = dev->dev_private;
+
+	schedule_work(&vgdev->ctrlq.dequeue_work);
+}
+
+void virtio_gpu_cursor_ack(struct virtqueue *vq)
+{
+	struct drm_device *dev = vq->vdev->priv;
+	struct virtio_gpu_device *vgdev = dev->dev_private;
+
+	schedule_work(&vgdev->cursorq.dequeue_work);
+}
+
+int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev)
+{
+	vgdev->vbufs = kmem_cache_create("virtio-gpu-vbufs",
+					 VBUFFER_SIZE,
+					 __alignof__(struct virtio_gpu_vbuffer),
+					 0, NULL);
+	if (!vgdev->vbufs)
+		return -ENOMEM;
+	return 0;
+}
+
+void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev)
+{
+	kmem_cache_destroy(vgdev->vbufs);
+	vgdev->vbufs = NULL;
+}
+
+static struct virtio_gpu_vbuffer*
+virtio_gpu_get_vbuf(struct virtio_gpu_device *vgdev,
+		    int size, int resp_size, void *resp_buf,
+		    virtio_gpu_resp_cb resp_cb)
+{
+	struct virtio_gpu_vbuffer *vbuf;
+
+	vbuf = kmem_cache_zalloc(vgdev->vbufs, GFP_KERNEL | __GFP_NOFAIL);
+
+	BUG_ON(size > MAX_INLINE_CMD_SIZE ||
+	       size < sizeof(struct virtio_gpu_ctrl_hdr));
+	vbuf->buf = (void *)vbuf + sizeof(*vbuf);
+	vbuf->size = size;
+
+	vbuf->resp_cb = resp_cb;
+	vbuf->resp_size = resp_size;
+	if (resp_size <= MAX_INLINE_RESP_SIZE)
+		vbuf->resp_buf = (void *)vbuf->buf + size;
+	else
+		vbuf->resp_buf = resp_buf;
+	BUG_ON(!vbuf->resp_buf);
+	return vbuf;
+}
+
+static struct virtio_gpu_ctrl_hdr *
+virtio_gpu_vbuf_ctrl_hdr(struct virtio_gpu_vbuffer *vbuf)
+{
+	/* this assumes a vbuf contains a command that starts with a
+	 * virtio_gpu_ctrl_hdr, which is true for both ctrl and cursor
+	 * virtqueues.
+	 */
+	return (struct virtio_gpu_ctrl_hdr *)vbuf->buf;
+}
+
+static struct virtio_gpu_update_cursor*
+virtio_gpu_alloc_cursor(struct virtio_gpu_device *vgdev,
+			struct virtio_gpu_vbuffer **vbuffer_p)
+{
+	struct virtio_gpu_vbuffer *vbuf;
+
+	vbuf = virtio_gpu_get_vbuf
+		(vgdev, sizeof(struct virtio_gpu_update_cursor),
+		 0, NULL, NULL);
+	if (IS_ERR(vbuf)) {
+		*vbuffer_p = NULL;
+		return ERR_CAST(vbuf);
+	}
+	*vbuffer_p = vbuf;
+	return (struct virtio_gpu_update_cursor *)vbuf->buf;
+}
+
+static void *virtio_gpu_alloc_cmd_resp(struct virtio_gpu_device *vgdev,
+				       virtio_gpu_resp_cb cb,
+				       struct virtio_gpu_vbuffer **vbuffer_p,
+				       int cmd_size, int resp_size,
+				       void *resp_buf)
+{
+	struct virtio_gpu_vbuffer *vbuf;
+
+	vbuf = virtio_gpu_get_vbuf(vgdev, cmd_size,
+				   resp_size, resp_buf, cb);
+	*vbuffer_p = vbuf;
+	return (struct virtio_gpu_command *)vbuf->buf;
+}
+
+static void *virtio_gpu_alloc_cmd(struct virtio_gpu_device *vgdev,
+				  struct virtio_gpu_vbuffer **vbuffer_p,
+				  int size)
+{
+	return virtio_gpu_alloc_cmd_resp(vgdev, NULL, vbuffer_p, size,
+					 sizeof(struct virtio_gpu_ctrl_hdr),
+					 NULL);
+}
+
+static void *virtio_gpu_alloc_cmd_cb(struct virtio_gpu_device *vgdev,
+				     struct virtio_gpu_vbuffer **vbuffer_p,
+				     int size,
+				     virtio_gpu_resp_cb cb)
+{
+	return virtio_gpu_alloc_cmd_resp(vgdev, cb, vbuffer_p, size,
+					 sizeof(struct virtio_gpu_ctrl_hdr),
+					 NULL);
+}
+
+static void free_vbuf(struct virtio_gpu_device *vgdev,
+		      struct virtio_gpu_vbuffer *vbuf)
+{
+	if (vbuf->resp_size > MAX_INLINE_RESP_SIZE)
+		kfree(vbuf->resp_buf);
+	kvfree(vbuf->data_buf);
+	kmem_cache_free(vgdev->vbufs, vbuf);
+}
+
+static void reclaim_vbufs(struct virtqueue *vq, struct list_head *reclaim_list)
+{
+	struct virtio_gpu_vbuffer *vbuf;
+	unsigned int len;
+	int freed = 0;
+
+	while ((vbuf = virtqueue_get_buf(vq, &len))) {
+		list_add_tail(&vbuf->list, reclaim_list);
+		freed++;
+	}
+	if (freed == 0)
+		DRM_DEBUG("Huh? zero vbufs reclaimed");
+}
+
+void virtio_gpu_dequeue_ctrl_func(struct work_struct *work)
+{
+	struct virtio_gpu_device *vgdev =
+		container_of(work, struct virtio_gpu_device,
+			     ctrlq.dequeue_work);
+	struct list_head reclaim_list;
+	struct virtio_gpu_vbuffer *entry, *tmp;
+	struct virtio_gpu_ctrl_hdr *resp;
+	u64 fence_id;
+
+	INIT_LIST_HEAD(&reclaim_list);
+	spin_lock(&vgdev->ctrlq.qlock);
+	do {
+		virtqueue_disable_cb(vgdev->ctrlq.vq);
+		reclaim_vbufs(vgdev->ctrlq.vq, &reclaim_list);
+
+	} while (!virtqueue_enable_cb(vgdev->ctrlq.vq));
+	spin_unlock(&vgdev->ctrlq.qlock);
+
+	list_for_each_entry(entry, &reclaim_list, list) {
+		resp = (struct virtio_gpu_ctrl_hdr *)entry->resp_buf;
+
+		trace_virtio_gpu_cmd_response(vgdev->ctrlq.vq, resp);
+
+		if (resp->type != cpu_to_le32(VIRTIO_GPU_RESP_OK_NODATA)) {
+			if (le32_to_cpu(resp->type) >= VIRTIO_GPU_RESP_ERR_UNSPEC) {
+				struct virtio_gpu_ctrl_hdr *cmd;
+				cmd = virtio_gpu_vbuf_ctrl_hdr(entry);
+				DRM_ERROR_RATELIMITED("response 0x%x (command 0x%x)\n",
+						      le32_to_cpu(resp->type),
+						      le32_to_cpu(cmd->type));
+			} else
+				DRM_DEBUG("response 0x%x\n", le32_to_cpu(resp->type));
+		}
+		if (resp->flags & cpu_to_le32(VIRTIO_GPU_FLAG_FENCE)) {
+			fence_id = le64_to_cpu(resp->fence_id);
+			virtio_gpu_fence_event_process(vgdev, fence_id);
+		}
+		if (entry->resp_cb)
+			entry->resp_cb(vgdev, entry);
+	}
+	wake_up(&vgdev->ctrlq.ack_queue);
+
+	list_for_each_entry_safe(entry, tmp, &reclaim_list, list) {
+		if (entry->objs)
+			virtio_gpu_array_put_free_delayed(vgdev, entry->objs);
+		list_del(&entry->list);
+		free_vbuf(vgdev, entry);
+	}
+}
+
+void virtio_gpu_dequeue_cursor_func(struct work_struct *work)
+{
+	struct virtio_gpu_device *vgdev =
+		container_of(work, struct virtio_gpu_device,
+			     cursorq.dequeue_work);
+	struct list_head reclaim_list;
+	struct virtio_gpu_vbuffer *entry, *tmp;
+
+	INIT_LIST_HEAD(&reclaim_list);
+	spin_lock(&vgdev->cursorq.qlock);
+	do {
+		virtqueue_disable_cb(vgdev->cursorq.vq);
+		reclaim_vbufs(vgdev->cursorq.vq, &reclaim_list);
+	} while (!virtqueue_enable_cb(vgdev->cursorq.vq));
+	spin_unlock(&vgdev->cursorq.qlock);
+
+	list_for_each_entry_safe(entry, tmp, &reclaim_list, list) {
+		list_del(&entry->list);
+		free_vbuf(vgdev, entry);
+	}
+	wake_up(&vgdev->cursorq.ack_queue);
+}
+
+/* Create sg_table from a vmalloc'd buffer. */
+static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
+{
+	int ret, s, i;
+	struct sg_table *sgt;
+	struct scatterlist *sg;
+	struct page *pg;
+
+	if (WARN_ON(!PAGE_ALIGNED(data)))
+		return NULL;
+
+	sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
+	if (!sgt)
+		return NULL;
+
+	*sg_ents = DIV_ROUND_UP(size, PAGE_SIZE);
+	ret = sg_alloc_table(sgt, *sg_ents, GFP_KERNEL);
+	if (ret) {
+		kfree(sgt);
+		return NULL;
+	}
+
+	for_each_sgtable_sg(sgt, sg, i) {
+		pg = vmalloc_to_page(data);
+		if (!pg) {
+			sg_free_table(sgt);
+			kfree(sgt);
+			return NULL;
+		}
+
+		s = min_t(int, PAGE_SIZE, size);
+		sg_set_page(sg, pg, s, 0);
+
+		size -= s;
+		data += s;
+	}
+
+	return sgt;
+}
+
+static int virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev,
+				     struct virtio_gpu_vbuffer *vbuf,
+				     struct virtio_gpu_fence *fence,
+				     int elemcnt,
+				     struct scatterlist **sgs,
+				     int outcnt,
+				     int incnt)
+{
+	struct virtqueue *vq = vgdev->ctrlq.vq;
+	int ret, idx;
+
+	if (!drm_dev_enter(vgdev->ddev, &idx)) {
+		if (fence && vbuf->objs)
+			virtio_gpu_array_unlock_resv(vbuf->objs);
+		free_vbuf(vgdev, vbuf);
+		return -ENODEV;
+	}
+
+	if (vgdev->has_indirect)
+		elemcnt = 1;
+
+again:
+	spin_lock(&vgdev->ctrlq.qlock);
+
+	if (vq->num_free < elemcnt) {
+		spin_unlock(&vgdev->ctrlq.qlock);
+		virtio_gpu_notify(vgdev);
+		wait_event(vgdev->ctrlq.ack_queue, vq->num_free >= elemcnt);
+		goto again;
+	}
+
+	/* now that the position of the vbuf in the virtqueue is known, we can
+	 * finally set the fence id
+	 */
+	if (fence) {
+		virtio_gpu_fence_emit(vgdev, virtio_gpu_vbuf_ctrl_hdr(vbuf),
+				      fence);
+		if (vbuf->objs) {
+			virtio_gpu_array_add_fence(vbuf->objs, &fence->f);
+			virtio_gpu_array_unlock_resv(vbuf->objs);
+		}
+	}
+
+	ret = virtqueue_add_sgs(vq, sgs, outcnt, incnt, vbuf, GFP_ATOMIC);
+	WARN_ON(ret);
+
+	trace_virtio_gpu_cmd_queue(vq, virtio_gpu_vbuf_ctrl_hdr(vbuf));
+
+	atomic_inc(&vgdev->pending_commands);
+
+	spin_unlock(&vgdev->ctrlq.qlock);
+
+	drm_dev_exit(idx);
+	return 0;
+}
+
+static int virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
+					       struct virtio_gpu_vbuffer *vbuf,
+					       struct virtio_gpu_fence *fence)
+{
+	struct scatterlist *sgs[3], vcmd, vout, vresp;
+	struct sg_table *sgt = NULL;
+	int elemcnt = 0, outcnt = 0, incnt = 0, ret;
+
+	/* set up vcmd */
+	sg_init_one(&vcmd, vbuf->buf, vbuf->size);
+	elemcnt++;
+	sgs[outcnt] = &vcmd;
+	outcnt++;
+
+	/* set up vout */
+	if (vbuf->data_size) {
+		if (is_vmalloc_addr(vbuf->data_buf)) {
+			int sg_ents;
+			sgt = vmalloc_to_sgt(vbuf->data_buf, vbuf->data_size,
+					     &sg_ents);
+			if (!sgt) {
+				if (fence && vbuf->objs)
+					virtio_gpu_array_unlock_resv(vbuf->objs);
+				return -ENOMEM;
+			}
+
+			elemcnt += sg_ents;
+			sgs[outcnt] = sgt->sgl;
+		} else {
+			sg_init_one(&vout, vbuf->data_buf, vbuf->data_size);
+			elemcnt++;
+			sgs[outcnt] = &vout;
+		}
+		outcnt++;
+	}
+
+	/* set up vresp */
+	if (vbuf->resp_size) {
+		sg_init_one(&vresp, vbuf->resp_buf, vbuf->resp_size);
+		elemcnt++;
+		sgs[outcnt + incnt] = &vresp;
+		incnt++;
+	}
+
+	ret = virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt,
+					incnt);
+
+	if (sgt) {
+		sg_free_table(sgt);
+		kfree(sgt);
+	}
+	return ret;
+}
+
+void virtio_gpu_notify(struct virtio_gpu_device *vgdev)
+{
+	bool notify;
+
+	if (!atomic_read(&vgdev->pending_commands))
+		return;
+
+	spin_lock(&vgdev->ctrlq.qlock);
+	atomic_set(&vgdev->pending_commands, 0);
+	notify = virtqueue_kick_prepare(vgdev->ctrlq.vq);
+	spin_unlock(&vgdev->ctrlq.qlock);
+
+	if (notify)
+		virtqueue_notify(vgdev->ctrlq.vq);
+}
+
+static int virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev,
+					struct virtio_gpu_vbuffer *vbuf)
+{
+	return virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL);
+}
+
+static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev,
+				    struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtqueue *vq = vgdev->cursorq.vq;
+	struct scatterlist *sgs[1], ccmd;
+	int idx, ret, outcnt;
+	bool notify;
+
+	if (!drm_dev_enter(vgdev->ddev, &idx)) {
+		free_vbuf(vgdev, vbuf);
+		return;
+	}
+
+	sg_init_one(&ccmd, vbuf->buf, vbuf->size);
+	sgs[0] = &ccmd;
+	outcnt = 1;
+
+	spin_lock(&vgdev->cursorq.qlock);
+retry:
+	ret = virtqueue_add_sgs(vq, sgs, outcnt, 0, vbuf, GFP_ATOMIC);
+	if (ret == -ENOSPC) {
+		spin_unlock(&vgdev->cursorq.qlock);
+		wait_event(vgdev->cursorq.ack_queue, vq->num_free >= outcnt);
+		spin_lock(&vgdev->cursorq.qlock);
+		goto retry;
+	} else {
+		trace_virtio_gpu_cmd_queue(vq,
+			virtio_gpu_vbuf_ctrl_hdr(vbuf));
+
+		notify = virtqueue_kick_prepare(vq);
+	}
+
+	spin_unlock(&vgdev->cursorq.qlock);
+
+	if (notify)
+		virtqueue_notify(vq);
+
+	drm_dev_exit(idx);
+}
+
+/* just create gem objects for userspace and long lived objects,
+ * just use dma_alloced pages for the queue objects?
+ */
+
+/* create a basic resource */
+void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
+				    struct virtio_gpu_object *bo,
+				    struct virtio_gpu_object_params *params,
+				    struct virtio_gpu_object_array *objs,
+				    struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_resource_create_2d *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_2D);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->format = cpu_to_le32(params->format);
+	cmd_p->width = cpu_to_le32(params->width);
+	cmd_p->height = cpu_to_le32(params->height);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+	bo->created = true;
+}
+
+static void virtio_gpu_cmd_unref_cb(struct virtio_gpu_device *vgdev,
+				    struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_object *bo;
+
+	bo = vbuf->resp_cb_data;
+	vbuf->resp_cb_data = NULL;
+
+	virtio_gpu_cleanup_object(bo);
+}
+
+void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
+				   struct virtio_gpu_object *bo)
+{
+	struct virtio_gpu_resource_unref *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	int ret;
+
+	cmd_p = virtio_gpu_alloc_cmd_cb(vgdev, &vbuf, sizeof(*cmd_p),
+					virtio_gpu_cmd_unref_cb);
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNREF);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+
+	vbuf->resp_cb_data = bo;
+	ret = virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	if (ret < 0)
+		virtio_gpu_cleanup_object(bo);
+}
+
+void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
+				uint32_t scanout_id, uint32_t resource_id,
+				uint32_t width, uint32_t height,
+				uint32_t x, uint32_t y)
+{
+	struct virtio_gpu_set_scanout *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT);
+	cmd_p->resource_id = cpu_to_le32(resource_id);
+	cmd_p->scanout_id = cpu_to_le32(scanout_id);
+	cmd_p->r.width = cpu_to_le32(width);
+	cmd_p->r.height = cpu_to_le32(height);
+	cmd_p->r.x = cpu_to_le32(x);
+	cmd_p->r.y = cpu_to_le32(y);
+
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
+				   uint32_t resource_id,
+				   uint32_t x, uint32_t y,
+				   uint32_t width, uint32_t height,
+				   struct virtio_gpu_object_array *objs,
+				   struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_resource_flush *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_FLUSH);
+	cmd_p->resource_id = cpu_to_le32(resource_id);
+	cmd_p->r.width = cpu_to_le32(width);
+	cmd_p->r.height = cpu_to_le32(height);
+	cmd_p->r.x = cpu_to_le32(x);
+	cmd_p->r.y = cpu_to_le32(y);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
+					uint64_t offset,
+					uint32_t width, uint32_t height,
+					uint32_t x, uint32_t y,
+					struct virtio_gpu_object_array *objs,
+					struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_transfer_to_host_2d *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev);
+
+	if (virtio_gpu_is_shmem(bo) && use_dma_api)
+		dma_sync_sgtable_for_device(vgdev->vdev->dev.parent,
+					    bo->base.sgt, DMA_TO_DEVICE);
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->offset = cpu_to_le64(offset);
+	cmd_p->r.width = cpu_to_le32(width);
+	cmd_p->r.height = cpu_to_le32(height);
+	cmd_p->r.x = cpu_to_le32(x);
+	cmd_p->r.y = cpu_to_le32(y);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+static void
+virtio_gpu_cmd_resource_attach_backing(struct virtio_gpu_device *vgdev,
+				       uint32_t resource_id,
+				       struct virtio_gpu_mem_entry *ents,
+				       uint32_t nents,
+				       struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_resource_attach_backing *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING);
+	cmd_p->resource_id = cpu_to_le32(resource_id);
+	cmd_p->nr_entries = cpu_to_le32(nents);
+
+	vbuf->data_buf = ents;
+	vbuf->data_size = sizeof(*ents) * nents;
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev,
+					       struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_resp_display_info *resp =
+		(struct virtio_gpu_resp_display_info *)vbuf->resp_buf;
+	int i;
+
+	spin_lock(&vgdev->display_info_lock);
+	for (i = 0; i < vgdev->num_scanouts; i++) {
+		vgdev->outputs[i].info = resp->pmodes[i];
+		if (resp->pmodes[i].enabled) {
+			DRM_DEBUG("output %d: %dx%d+%d+%d", i,
+				  le32_to_cpu(resp->pmodes[i].r.width),
+				  le32_to_cpu(resp->pmodes[i].r.height),
+				  le32_to_cpu(resp->pmodes[i].r.x),
+				  le32_to_cpu(resp->pmodes[i].r.y));
+		} else {
+			DRM_DEBUG("output %d: disabled", i);
+		}
+	}
+
+	vgdev->display_info_pending = false;
+	spin_unlock(&vgdev->display_info_lock);
+	wake_up(&vgdev->resp_wq);
+
+	if (!drm_helper_hpd_irq_event(vgdev->ddev))
+		drm_kms_helper_hotplug_event(vgdev->ddev);
+}
+
+static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev,
+					      struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_get_capset_info *cmd =
+		(struct virtio_gpu_get_capset_info *)vbuf->buf;
+	struct virtio_gpu_resp_capset_info *resp =
+		(struct virtio_gpu_resp_capset_info *)vbuf->resp_buf;
+	int i = le32_to_cpu(cmd->capset_index);
+
+	spin_lock(&vgdev->display_info_lock);
+	if (vgdev->capsets) {
+		vgdev->capsets[i].id = le32_to_cpu(resp->capset_id);
+		vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version);
+		vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size);
+	} else {
+		DRM_ERROR("invalid capset memory.");
+	}
+	spin_unlock(&vgdev->display_info_lock);
+	wake_up(&vgdev->resp_wq);
+}
+
+static void virtio_gpu_cmd_capset_cb(struct virtio_gpu_device *vgdev,
+				     struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_get_capset *cmd =
+		(struct virtio_gpu_get_capset *)vbuf->buf;
+	struct virtio_gpu_resp_capset *resp =
+		(struct virtio_gpu_resp_capset *)vbuf->resp_buf;
+	struct virtio_gpu_drv_cap_cache *cache_ent;
+
+	spin_lock(&vgdev->display_info_lock);
+	list_for_each_entry(cache_ent, &vgdev->cap_cache, head) {
+		if (cache_ent->version == le32_to_cpu(cmd->capset_version) &&
+		    cache_ent->id == le32_to_cpu(cmd->capset_id)) {
+			memcpy(cache_ent->caps_cache, resp->capset_data,
+			       cache_ent->size);
+			/* Copy must occur before is_valid is signalled. */
+			smp_wmb();
+			atomic_set(&cache_ent->is_valid, 1);
+			break;
+		}
+	}
+	spin_unlock(&vgdev->display_info_lock);
+	wake_up_all(&vgdev->resp_wq);
+}
+
+static int virtio_get_edid_block(void *data, u8 *buf,
+				 unsigned int block, size_t len)
+{
+	struct virtio_gpu_resp_edid *resp = data;
+	size_t start = block * EDID_LENGTH;
+
+	if (start + len > le32_to_cpu(resp->size))
+		return -EINVAL;
+	memcpy(buf, resp->edid + start, len);
+	return 0;
+}
+
+static void virtio_gpu_cmd_get_edid_cb(struct virtio_gpu_device *vgdev,
+				       struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_cmd_get_edid *cmd =
+		(struct virtio_gpu_cmd_get_edid *)vbuf->buf;
+	struct virtio_gpu_resp_edid *resp =
+		(struct virtio_gpu_resp_edid *)vbuf->resp_buf;
+	uint32_t scanout = le32_to_cpu(cmd->scanout);
+	struct virtio_gpu_output *output;
+	struct edid *new_edid, *old_edid;
+
+	if (scanout >= vgdev->num_scanouts)
+		return;
+	output = vgdev->outputs + scanout;
+
+	new_edid = drm_do_get_edid(&output->conn, virtio_get_edid_block, resp);
+	drm_connector_update_edid_property(&output->conn, new_edid);
+
+	spin_lock(&vgdev->display_info_lock);
+	old_edid = output->edid;
+	output->edid = new_edid;
+	spin_unlock(&vgdev->display_info_lock);
+
+	kfree(old_edid);
+	wake_up(&vgdev->resp_wq);
+}
+
+int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev)
+{
+	struct virtio_gpu_ctrl_hdr *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	void *resp_buf;
+
+	resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_display_info),
+			   GFP_KERNEL);
+	if (!resp_buf)
+		return -ENOMEM;
+
+	cmd_p = virtio_gpu_alloc_cmd_resp
+		(vgdev, &virtio_gpu_cmd_get_display_info_cb, &vbuf,
+		 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_display_info),
+		 resp_buf);
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	vgdev->display_info_pending = true;
+	cmd_p->type = cpu_to_le32(VIRTIO_GPU_CMD_GET_DISPLAY_INFO);
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	return 0;
+}
+
+int virtio_gpu_cmd_get_capset_info(struct virtio_gpu_device *vgdev, int idx)
+{
+	struct virtio_gpu_get_capset_info *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	void *resp_buf;
+
+	resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset_info),
+			   GFP_KERNEL);
+	if (!resp_buf)
+		return -ENOMEM;
+
+	cmd_p = virtio_gpu_alloc_cmd_resp
+		(vgdev, &virtio_gpu_cmd_get_capset_info_cb, &vbuf,
+		 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_capset_info),
+		 resp_buf);
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET_INFO);
+	cmd_p->capset_index = cpu_to_le32(idx);
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	return 0;
+}
+
+int virtio_gpu_cmd_get_capset(struct virtio_gpu_device *vgdev,
+			      int idx, int version,
+			      struct virtio_gpu_drv_cap_cache **cache_p)
+{
+	struct virtio_gpu_get_capset *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	int max_size;
+	struct virtio_gpu_drv_cap_cache *cache_ent;
+	struct virtio_gpu_drv_cap_cache *search_ent;
+	void *resp_buf;
+
+	*cache_p = NULL;
+
+	if (idx >= vgdev->num_capsets)
+		return -EINVAL;
+
+	if (version > vgdev->capsets[idx].max_version)
+		return -EINVAL;
+
+	cache_ent = kzalloc(sizeof(*cache_ent), GFP_KERNEL);
+	if (!cache_ent)
+		return -ENOMEM;
+
+	max_size = vgdev->capsets[idx].max_size;
+	cache_ent->caps_cache = kmalloc(max_size, GFP_KERNEL);
+	if (!cache_ent->caps_cache) {
+		kfree(cache_ent);
+		return -ENOMEM;
+	}
+
+	resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_capset) + max_size,
+			   GFP_KERNEL);
+	if (!resp_buf) {
+		kfree(cache_ent->caps_cache);
+		kfree(cache_ent);
+		return -ENOMEM;
+	}
+
+	cache_ent->version = version;
+	cache_ent->id = vgdev->capsets[idx].id;
+	atomic_set(&cache_ent->is_valid, 0);
+	cache_ent->size = max_size;
+	spin_lock(&vgdev->display_info_lock);
+	/* Search while under lock in case it was added by another task. */
+	list_for_each_entry(search_ent, &vgdev->cap_cache, head) {
+		if (search_ent->id == vgdev->capsets[idx].id &&
+		    search_ent->version == version) {
+			*cache_p = search_ent;
+			break;
+		}
+	}
+	if (!*cache_p)
+		list_add_tail(&cache_ent->head, &vgdev->cap_cache);
+	spin_unlock(&vgdev->display_info_lock);
+
+	if (*cache_p) {
+		/* Entry was found, so free everything that was just created. */
+		kfree(resp_buf);
+		kfree(cache_ent->caps_cache);
+		kfree(cache_ent);
+		return 0;
+	}
+
+	cmd_p = virtio_gpu_alloc_cmd_resp
+		(vgdev, &virtio_gpu_cmd_capset_cb, &vbuf, sizeof(*cmd_p),
+		 sizeof(struct virtio_gpu_resp_capset) + max_size,
+		 resp_buf);
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_CAPSET);
+	cmd_p->capset_id = cpu_to_le32(vgdev->capsets[idx].id);
+	cmd_p->capset_version = cpu_to_le32(version);
+	*cache_p = cache_ent;
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+
+	return 0;
+}
+
+int virtio_gpu_cmd_get_edids(struct virtio_gpu_device *vgdev)
+{
+	struct virtio_gpu_cmd_get_edid *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	void *resp_buf;
+	int scanout;
+
+	if (WARN_ON(!vgdev->has_edid))
+		return -EINVAL;
+
+	for (scanout = 0; scanout < vgdev->num_scanouts; scanout++) {
+		resp_buf = kzalloc(sizeof(struct virtio_gpu_resp_edid),
+				   GFP_KERNEL);
+		if (!resp_buf)
+			return -ENOMEM;
+
+		cmd_p = virtio_gpu_alloc_cmd_resp
+			(vgdev, &virtio_gpu_cmd_get_edid_cb, &vbuf,
+			 sizeof(*cmd_p), sizeof(struct virtio_gpu_resp_edid),
+			 resp_buf);
+		cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_GET_EDID);
+		cmd_p->scanout = cpu_to_le32(scanout);
+		virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	}
+
+	return 0;
+}
+
+void virtio_gpu_cmd_context_create(struct virtio_gpu_device *vgdev, uint32_t id,
+				   uint32_t context_init, uint32_t nlen,
+				   const char *name)
+{
+	struct virtio_gpu_ctx_create *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_CREATE);
+	cmd_p->hdr.ctx_id = cpu_to_le32(id);
+	cmd_p->nlen = cpu_to_le32(nlen);
+	cmd_p->context_init = cpu_to_le32(context_init);
+	strncpy(cmd_p->debug_name, name, sizeof(cmd_p->debug_name) - 1);
+	cmd_p->debug_name[sizeof(cmd_p->debug_name) - 1] = 0;
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_context_destroy(struct virtio_gpu_device *vgdev,
+				    uint32_t id)
+{
+	struct virtio_gpu_ctx_destroy *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DESTROY);
+	cmd_p->hdr.ctx_id = cpu_to_le32(id);
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device *vgdev,
+					    uint32_t ctx_id,
+					    struct virtio_gpu_object_array *objs)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_ctx_resource *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE);
+	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device *vgdev,
+					    uint32_t ctx_id,
+					    struct virtio_gpu_object_array *objs)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_ctx_resource *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE);
+	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void
+virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
+				  struct virtio_gpu_object *bo,
+				  struct virtio_gpu_object_params *params,
+				  struct virtio_gpu_object_array *objs,
+				  struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_resource_create_3d *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_3D);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->format = cpu_to_le32(params->format);
+	cmd_p->width = cpu_to_le32(params->width);
+	cmd_p->height = cpu_to_le32(params->height);
+
+	cmd_p->target = cpu_to_le32(params->target);
+	cmd_p->bind = cpu_to_le32(params->bind);
+	cmd_p->depth = cpu_to_le32(params->depth);
+	cmd_p->array_size = cpu_to_le32(params->array_size);
+	cmd_p->last_level = cpu_to_le32(params->last_level);
+	cmd_p->nr_samples = cpu_to_le32(params->nr_samples);
+	cmd_p->flags = cpu_to_le32(params->flags);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+
+	bo->created = true;
+}
+
+void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
+					uint32_t ctx_id,
+					uint64_t offset, uint32_t level,
+					uint32_t stride,
+					uint32_t layer_stride,
+					struct drm_virtgpu_3d_box *box,
+					struct virtio_gpu_object_array *objs,
+					struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_transfer_host_3d *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev);
+
+	if (virtio_gpu_is_shmem(bo) && use_dma_api)
+		dma_sync_sgtable_for_device(vgdev->vdev->dev.parent,
+					    bo->base.sgt, DMA_TO_DEVICE);
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
+	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	convert_to_hw_box(&cmd_p->box, box);
+	cmd_p->offset = cpu_to_le64(offset);
+	cmd_p->level = cpu_to_le32(level);
+	cmd_p->stride = cpu_to_le32(stride);
+	cmd_p->layer_stride = cpu_to_le32(layer_stride);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
+					  uint32_t ctx_id,
+					  uint64_t offset, uint32_t level,
+					  uint32_t stride,
+					  uint32_t layer_stride,
+					  struct drm_virtgpu_3d_box *box,
+					  struct virtio_gpu_object_array *objs,
+					  struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_transfer_host_3d *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D);
+	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	convert_to_hw_box(&cmd_p->box, box);
+	cmd_p->offset = cpu_to_le64(offset);
+	cmd_p->level = cpu_to_le32(level);
+	cmd_p->stride = cpu_to_le32(stride);
+	cmd_p->layer_stride = cpu_to_le32(layer_stride);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
+			   void *data, uint32_t data_size,
+			   uint32_t ctx_id,
+			   struct virtio_gpu_object_array *objs,
+			   struct virtio_gpu_fence *fence)
+{
+	struct virtio_gpu_cmd_submit *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	vbuf->data_buf = data;
+	vbuf->data_size = data_size;
+	vbuf->objs = objs;
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SUBMIT_3D);
+	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
+	cmd_p->size = cpu_to_le32(data_size);
+
+	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+}
+
+void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev,
+			      struct virtio_gpu_object *obj,
+			      struct virtio_gpu_mem_entry *ents,
+			      unsigned int nents)
+{
+	virtio_gpu_cmd_resource_attach_backing(vgdev, obj->hw_res_handle,
+					       ents, nents, NULL);
+}
+
+void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev,
+			    struct virtio_gpu_output *output)
+{
+	struct virtio_gpu_vbuffer *vbuf;
+	struct virtio_gpu_update_cursor *cur_p;
+
+	output->cursor.pos.scanout_id = cpu_to_le32(output->index);
+	cur_p = virtio_gpu_alloc_cursor(vgdev, &vbuf);
+	memcpy(cur_p, &output->cursor, sizeof(output->cursor));
+	virtio_gpu_queue_cursor(vgdev, vbuf);
+}
+
+static void virtio_gpu_cmd_resource_uuid_cb(struct virtio_gpu_device *vgdev,
+					    struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_object *obj =
+		gem_to_virtio_gpu_obj(vbuf->objs->objs[0]);
+	struct virtio_gpu_resp_resource_uuid *resp =
+		(struct virtio_gpu_resp_resource_uuid *)vbuf->resp_buf;
+	uint32_t resp_type = le32_to_cpu(resp->hdr.type);
+
+	spin_lock(&vgdev->resource_export_lock);
+	WARN_ON(obj->uuid_state != STATE_INITIALIZING);
+
+	if (resp_type == VIRTIO_GPU_RESP_OK_RESOURCE_UUID &&
+	    obj->uuid_state == STATE_INITIALIZING) {
+		import_uuid(&obj->uuid, resp->uuid);
+		obj->uuid_state = STATE_OK;
+	} else {
+		obj->uuid_state = STATE_ERR;
+	}
+	spin_unlock(&vgdev->resource_export_lock);
+
+	wake_up_all(&vgdev->resp_wq);
+}
+
+int
+virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
+				    struct virtio_gpu_object_array *objs)
+{
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_resource_assign_uuid *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	struct virtio_gpu_resp_resource_uuid *resp_buf;
+
+	resp_buf = kzalloc(sizeof(*resp_buf), GFP_KERNEL);
+	if (!resp_buf) {
+		spin_lock(&vgdev->resource_export_lock);
+		bo->uuid_state = STATE_ERR;
+		spin_unlock(&vgdev->resource_export_lock);
+		virtio_gpu_array_put_free(objs);
+		return -ENOMEM;
+	}
+
+	cmd_p = virtio_gpu_alloc_cmd_resp
+		(vgdev, virtio_gpu_cmd_resource_uuid_cb, &vbuf, sizeof(*cmd_p),
+		 sizeof(struct virtio_gpu_resp_resource_uuid), resp_buf);
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_ASSIGN_UUID);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+
+	vbuf->objs = objs;
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	return 0;
+}
+
+static void virtio_gpu_cmd_resource_map_cb(struct virtio_gpu_device *vgdev,
+					   struct virtio_gpu_vbuffer *vbuf)
+{
+	struct virtio_gpu_object *bo =
+		gem_to_virtio_gpu_obj(vbuf->objs->objs[0]);
+	struct virtio_gpu_resp_map_info *resp =
+		(struct virtio_gpu_resp_map_info *)vbuf->resp_buf;
+	struct virtio_gpu_object_vram *vram = to_virtio_gpu_vram(bo);
+	uint32_t resp_type = le32_to_cpu(resp->hdr.type);
+
+	spin_lock(&vgdev->host_visible_lock);
+
+	if (resp_type == VIRTIO_GPU_RESP_OK_MAP_INFO) {
+		vram->map_info = resp->map_info;
+		vram->map_state = STATE_OK;
+	} else {
+		vram->map_state = STATE_ERR;
+	}
+
+	spin_unlock(&vgdev->host_visible_lock);
+	wake_up_all(&vgdev->resp_wq);
+}
+
+int virtio_gpu_cmd_map(struct virtio_gpu_device *vgdev,
+		       struct virtio_gpu_object_array *objs, uint64_t offset)
+{
+	struct virtio_gpu_resource_map_blob *cmd_p;
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]);
+	struct virtio_gpu_vbuffer *vbuf;
+	struct virtio_gpu_resp_map_info *resp_buf;
+
+	resp_buf = kzalloc(sizeof(*resp_buf), GFP_KERNEL);
+	if (!resp_buf)
+		return -ENOMEM;
+
+	cmd_p = virtio_gpu_alloc_cmd_resp
+		(vgdev, virtio_gpu_cmd_resource_map_cb, &vbuf, sizeof(*cmd_p),
+		 sizeof(struct virtio_gpu_resp_map_info), resp_buf);
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->offset = cpu_to_le64(offset);
+	vbuf->objs = objs;
+
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	return 0;
+}
+
+void virtio_gpu_cmd_unmap(struct virtio_gpu_device *vgdev,
+			  struct virtio_gpu_object *bo)
+{
+	struct virtio_gpu_resource_unmap_blob *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}
+
+void
+virtio_gpu_cmd_resource_create_blob(struct virtio_gpu_device *vgdev,
+				    struct virtio_gpu_object *bo,
+				    struct virtio_gpu_object_params *params,
+				    struct virtio_gpu_mem_entry *ents,
+				    uint32_t nents)
+{
+	struct virtio_gpu_resource_create_blob *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB);
+	cmd_p->hdr.ctx_id = cpu_to_le32(params->ctx_id);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->blob_mem = cpu_to_le32(params->blob_mem);
+	cmd_p->blob_flags = cpu_to_le32(params->blob_flags);
+	cmd_p->blob_id = cpu_to_le64(params->blob_id);
+	cmd_p->size = cpu_to_le64(params->size);
+	cmd_p->nr_entries = cpu_to_le32(nents);
+
+	vbuf->data_buf = ents;
+	vbuf->data_size = sizeof(*ents) * nents;
+
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	bo->created = true;
+}
+
+void virtio_gpu_cmd_set_scanout_blob(struct virtio_gpu_device *vgdev,
+				     uint32_t scanout_id,
+				     struct virtio_gpu_object *bo,
+				     struct drm_framebuffer *fb,
+				     uint32_t width, uint32_t height,
+				     uint32_t x, uint32_t y)
+{
+	uint32_t i;
+	struct virtio_gpu_set_scanout_blob *cmd_p;
+	struct virtio_gpu_vbuffer *vbuf;
+	uint32_t format = virtio_gpu_translate_format(fb->format->format);
+
+	cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
+	memset(cmd_p, 0, sizeof(*cmd_p));
+
+	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_SET_SCANOUT_BLOB);
+	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
+	cmd_p->scanout_id = cpu_to_le32(scanout_id);
+
+	cmd_p->format = cpu_to_le32(format);
+	cmd_p->width  = cpu_to_le32(fb->width);
+	cmd_p->height = cpu_to_le32(fb->height);
+
+	for (i = 0; i < 4; i++) {
+		cmd_p->strides[i] = cpu_to_le32(fb->pitches[i]);
+		cmd_p->offsets[i] = cpu_to_le32(fb->offsets[i]);
+	}
+
+	cmd_p->r.width = cpu_to_le32(width);
+	cmd_p->r.height = cpu_to_le32(height);
+	cmd_p->r.x = cpu_to_le32(x);
+	cmd_p->r.y = cpu_to_le32(y);
+
+	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+}