[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / virtio / virtgpu_kms.c

/*
 * 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 <linux/virtio.h>
#include <linux/virtio_config.h>
#include <drm/drmP.h>
#include "virtgpu_drv.h"

static int virtio_gpu_fbdev = 1;

MODULE_PARM_DESC(fbdev, "Disable/Enable framebuffer device & console");
module_param_named(fbdev, virtio_gpu_fbdev, int, 0400);

static void virtio_gpu_config_changed_work_func(struct work_struct *work)
{
	struct virtio_gpu_device *vgdev =
		container_of(work, struct virtio_gpu_device,
			     config_changed_work);
	u32 events_read, events_clear = 0;

	/* read the config space */
	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
		     events_read, &events_read);
	if (events_read & VIRTIO_GPU_EVENT_DISPLAY) {
		virtio_gpu_cmd_get_display_info(vgdev);
		drm_helper_hpd_irq_event(vgdev->ddev);
		events_clear |= VIRTIO_GPU_EVENT_DISPLAY;
	}
	virtio_cwrite(vgdev->vdev, struct virtio_gpu_config,
		      events_clear, &events_clear);
}

static void virtio_gpu_ctx_id_get(struct virtio_gpu_device *vgdev,
				  uint32_t *resid)
{
	int handle;

	idr_preload(GFP_KERNEL);
	spin_lock(&vgdev->ctx_id_idr_lock);
	handle = idr_alloc(&vgdev->ctx_id_idr, NULL, 1, 0, 0);
	spin_unlock(&vgdev->ctx_id_idr_lock);
	idr_preload_end();
	*resid = handle;
}

static void virtio_gpu_ctx_id_put(struct virtio_gpu_device *vgdev, uint32_t id)
{
	spin_lock(&vgdev->ctx_id_idr_lock);
	idr_remove(&vgdev->ctx_id_idr, id);
	spin_unlock(&vgdev->ctx_id_idr_lock);
}

static void virtio_gpu_context_create(struct virtio_gpu_device *vgdev,
				      uint32_t nlen, const char *name,
				      uint32_t *ctx_id)
{
	virtio_gpu_ctx_id_get(vgdev, ctx_id);
	virtio_gpu_cmd_context_create(vgdev, *ctx_id, nlen, name);
}

static void virtio_gpu_context_destroy(struct virtio_gpu_device *vgdev,
				      uint32_t ctx_id)
{
	virtio_gpu_cmd_context_destroy(vgdev, ctx_id);
	virtio_gpu_ctx_id_put(vgdev, ctx_id);
}

static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq,
			       void (*work_func)(struct work_struct *work))
{
	spin_lock_init(&vgvq->qlock);
	init_waitqueue_head(&vgvq->ack_queue);
	INIT_WORK(&vgvq->dequeue_work, work_func);
}

static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
				   int num_capsets)
{
	int i, ret;

	vgdev->capsets = kcalloc(num_capsets,
				 sizeof(struct virtio_gpu_drv_capset),
				 GFP_KERNEL);
	if (!vgdev->capsets) {
		DRM_ERROR("failed to allocate cap sets\n");
		return;
	}
	for (i = 0; i < num_capsets; i++) {
		virtio_gpu_cmd_get_capset_info(vgdev, i);
		ret = wait_event_timeout(vgdev->resp_wq,
					 vgdev->capsets[i].id > 0, 5 * HZ);
		if (ret == 0) {
			DRM_ERROR("timed out waiting for cap set %d\n", i);
			kfree(vgdev->capsets);
			vgdev->capsets = NULL;
			return;
		}
		DRM_INFO("cap set %d: id %d, max-version %d, max-size %d\n",
			 i, vgdev->capsets[i].id,
			 vgdev->capsets[i].max_version,
			 vgdev->capsets[i].max_size);
	}
	vgdev->num_capsets = num_capsets;
}

int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
{
	static vq_callback_t *callbacks[] = {
		virtio_gpu_ctrl_ack, virtio_gpu_cursor_ack
	};
	static const char * const names[] = { "control", "cursor" };

	struct virtio_gpu_device *vgdev;
	/* this will expand later */
	struct virtqueue *vqs[2];
	u32 num_scanouts, num_capsets;
	int ret;

	if (!virtio_has_feature(dev->virtdev, VIRTIO_F_VERSION_1))
		return -ENODEV;

	vgdev = kzalloc(sizeof(struct virtio_gpu_device), GFP_KERNEL);
	if (!vgdev)
		return -ENOMEM;

	vgdev->ddev = dev;
	dev->dev_private = vgdev;
	vgdev->vdev = dev->virtdev;
	vgdev->dev = dev->dev;

	spin_lock_init(&vgdev->display_info_lock);
	spin_lock_init(&vgdev->ctx_id_idr_lock);
	idr_init(&vgdev->ctx_id_idr);
	spin_lock_init(&vgdev->resource_idr_lock);
	idr_init(&vgdev->resource_idr);
	init_waitqueue_head(&vgdev->resp_wq);
	virtio_gpu_init_vq(&vgdev->ctrlq, virtio_gpu_dequeue_ctrl_func);
	virtio_gpu_init_vq(&vgdev->cursorq, virtio_gpu_dequeue_cursor_func);

	vgdev->fence_drv.context = dma_fence_context_alloc(1);
	spin_lock_init(&vgdev->fence_drv.lock);
	INIT_LIST_HEAD(&vgdev->fence_drv.fences);
	INIT_LIST_HEAD(&vgdev->cap_cache);
	INIT_WORK(&vgdev->config_changed_work,
		  virtio_gpu_config_changed_work_func);

#ifdef __LITTLE_ENDIAN
	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL))
		vgdev->has_virgl_3d = true;
	DRM_INFO("virgl 3d acceleration %s\n",
		 vgdev->has_virgl_3d ? "enabled" : "not supported by host");
#else
	DRM_INFO("virgl 3d acceleration not supported by guest\n");
#endif

	ret = vgdev->vdev->config->find_vqs(vgdev->vdev, 2, vqs,
					    callbacks, names, NULL);
	if (ret) {
		DRM_ERROR("failed to find virt queues\n");
		goto err_vqs;
	}
	vgdev->ctrlq.vq = vqs[0];
	vgdev->cursorq.vq = vqs[1];
	ret = virtio_gpu_alloc_vbufs(vgdev);
	if (ret) {
		DRM_ERROR("failed to alloc vbufs\n");
		goto err_vbufs;
	}

	ret = virtio_gpu_ttm_init(vgdev);
	if (ret) {
		DRM_ERROR("failed to init ttm %d\n", ret);
		goto err_ttm;
	}

	/* get display info */
	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
		     num_scanouts, &num_scanouts);
	vgdev->num_scanouts = min_t(uint32_t, num_scanouts,
				    VIRTIO_GPU_MAX_SCANOUTS);
	if (!vgdev->num_scanouts) {
		DRM_ERROR("num_scanouts is zero\n");
		ret = -EINVAL;
		goto err_scanouts;
	}
	DRM_INFO("number of scanouts: %d\n", num_scanouts);

	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
		     num_capsets, &num_capsets);
	DRM_INFO("number of cap sets: %d\n", num_capsets);

	ret = virtio_gpu_modeset_init(vgdev);
	if (ret)
		goto err_modeset;

	virtio_device_ready(vgdev->vdev);
	vgdev->vqs_ready = true;

	if (num_capsets)
		virtio_gpu_get_capsets(vgdev, num_capsets);
	virtio_gpu_cmd_get_display_info(vgdev);
	wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
			   5 * HZ);
	if (virtio_gpu_fbdev)
		virtio_gpu_fbdev_init(vgdev);

	return 0;

err_modeset:
err_scanouts:
	virtio_gpu_ttm_fini(vgdev);
err_ttm:
	virtio_gpu_free_vbufs(vgdev);
err_vbufs:
	vgdev->vdev->config->del_vqs(vgdev->vdev);
err_vqs:
	kfree(vgdev);
	return ret;
}

static void virtio_gpu_cleanup_cap_cache(struct virtio_gpu_device *vgdev)
{
	struct virtio_gpu_drv_cap_cache *cache_ent, *tmp;

	list_for_each_entry_safe(cache_ent, tmp, &vgdev->cap_cache, head) {
		kfree(cache_ent->caps_cache);
		kfree(cache_ent);
	}
}

void virtio_gpu_driver_unload(struct drm_device *dev)
{
	struct virtio_gpu_device *vgdev = dev->dev_private;

	vgdev->vqs_ready = false;
	flush_work(&vgdev->ctrlq.dequeue_work);
	flush_work(&vgdev->cursorq.dequeue_work);
	flush_work(&vgdev->config_changed_work);
	vgdev->vdev->config->del_vqs(vgdev->vdev);

	virtio_gpu_modeset_fini(vgdev);
	virtio_gpu_ttm_fini(vgdev);
	virtio_gpu_free_vbufs(vgdev);
	virtio_gpu_cleanup_cap_cache(vgdev);
	kfree(vgdev->capsets);
	kfree(vgdev);
}

int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)
{
	struct virtio_gpu_device *vgdev = dev->dev_private;
	struct virtio_gpu_fpriv *vfpriv;
	uint32_t id;
	char dbgname[64], tmpname[TASK_COMM_LEN];

	/* can't create contexts without 3d renderer */
	if (!vgdev->has_virgl_3d)
		return 0;

	get_task_comm(tmpname, current);
	snprintf(dbgname, sizeof(dbgname), "%s", tmpname);
	dbgname[63] = 0;
	/* allocate a virt GPU context for this opener */
	vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL);
	if (!vfpriv)
		return -ENOMEM;

	virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id);

	vfpriv->ctx_id = id;
	file->driver_priv = vfpriv;
	return 0;
}

void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file)
{
	struct virtio_gpu_device *vgdev = dev->dev_private;
	struct virtio_gpu_fpriv *vfpriv;

	if (!vgdev->has_virgl_3d)
		return;

	vfpriv = file->driver_priv;

	virtio_gpu_context_destroy(vgdev, vfpriv->ctx_id);
	kfree(vfpriv);
	file->driver_priv = NULL;
}
Commit	Line	Data
dc5698e8 DA	1	/*
	2	* Copyright (C) 2015 Red Hat, Inc.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining
	6	* a copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sublicense, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the
	14	* next paragraph) shall be included in all copies or substantial
	15	* portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	21	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	22	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	23	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	24	*/
	25
	26	#include <linux/virtio.h>
	27	#include <linux/virtio_config.h>
	28	#include <drm/drmP.h>
	29	#include "virtgpu_drv.h"
	30
	31	static int virtio_gpu_fbdev = 1;
	32
	33	MODULE_PARM_DESC(fbdev, "Disable/Enable framebuffer device & console");
	34	module_param_named(fbdev, virtio_gpu_fbdev, int, 0400);
	35
	36	static void virtio_gpu_config_changed_work_func(struct work_struct *work)
	37	{
	38	struct virtio_gpu_device *vgdev =
	39	container_of(work, struct virtio_gpu_device,
	40	config_changed_work);
	41	u32 events_read, events_clear = 0;
	42
	43	/* read the config space */
	44	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
	45	events_read, &events_read);
	46	if (events_read & VIRTIO_GPU_EVENT_DISPLAY) {
	47	virtio_gpu_cmd_get_display_info(vgdev);
	48	drm_helper_hpd_irq_event(vgdev->ddev);
	49	events_clear \|= VIRTIO_GPU_EVENT_DISPLAY;
	50	}
	51	virtio_cwrite(vgdev->vdev, struct virtio_gpu_config,
	52	events_clear, &events_clear);
	53	}
	54
62fb7a5e GH	55	static void virtio_gpu_ctx_id_get(struct virtio_gpu_device *vgdev,
	56	uint32_t *resid)
	57	{
	58	int handle;
	59
	60	idr_preload(GFP_KERNEL);
	61	spin_lock(&vgdev->ctx_id_idr_lock);
	62	handle = idr_alloc(&vgdev->ctx_id_idr, NULL, 1, 0, 0);
	63	spin_unlock(&vgdev->ctx_id_idr_lock);
	64	idr_preload_end();
	65	*resid = handle;
	66	}
	67
	68	static void virtio_gpu_ctx_id_put(struct virtio_gpu_device *vgdev, uint32_t id)
	69	{
	70	spin_lock(&vgdev->ctx_id_idr_lock);
	71	idr_remove(&vgdev->ctx_id_idr, id);
	72	spin_unlock(&vgdev->ctx_id_idr_lock);
	73	}
	74
	75	static void virtio_gpu_context_create(struct virtio_gpu_device *vgdev,
	76	uint32_t nlen, const char *name,
	77	uint32_t *ctx_id)
	78	{
	79	virtio_gpu_ctx_id_get(vgdev, ctx_id);
	80	virtio_gpu_cmd_context_create(vgdev, *ctx_id, nlen, name);
	81	}
	82
	83	static void virtio_gpu_context_destroy(struct virtio_gpu_device *vgdev,
	84	uint32_t ctx_id)
	85	{
	86	virtio_gpu_cmd_context_destroy(vgdev, ctx_id);
	87	virtio_gpu_ctx_id_put(vgdev, ctx_id);
	88	}
	89
dc5698e8 DA	90	static void virtio_gpu_init_vq(struct virtio_gpu_queue *vgvq,
	91	void (work_func)(struct work_struct work))
	92	{
	93	spin_lock_init(&vgvq->qlock);
	94	init_waitqueue_head(&vgvq->ack_queue);
	95	INIT_WORK(&vgvq->dequeue_work, work_func);
	96	}
	97
62fb7a5e GH	98	static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
	99	int num_capsets)
	100	{
	101	int i, ret;
	102
	103	vgdev->capsets = kcalloc(num_capsets,
	104	sizeof(struct virtio_gpu_drv_capset),
	105	GFP_KERNEL);
	106	if (!vgdev->capsets) {
	107	DRM_ERROR("failed to allocate cap sets\n");
	108	return;
	109	}
	110	for (i = 0; i < num_capsets; i++) {
	111	virtio_gpu_cmd_get_capset_info(vgdev, i);
	112	ret = wait_event_timeout(vgdev->resp_wq,
	113	vgdev->capsets[i].id > 0, 5 * HZ);
	114	if (ret == 0) {
	115	DRM_ERROR("timed out waiting for cap set %d\n", i);
	116	kfree(vgdev->capsets);
	117	vgdev->capsets = NULL;
	118	return;
	119	}
	120	DRM_INFO("cap set %d: id %d, max-version %d, max-size %d\n",
	121	i, vgdev->capsets[i].id,
	122	vgdev->capsets[i].max_version,
	123	vgdev->capsets[i].max_size);
	124	}
	125	vgdev->num_capsets = num_capsets;
	126	}
	127
dc5698e8 DA	128	int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
	129	{
	130	static vq_callback_t *callbacks[] = {
	131	virtio_gpu_ctrl_ack, virtio_gpu_cursor_ack
	132	};
f7ad26ff	133	static const char * const names[] = { "control", "cursor" };
dc5698e8 DA	134
	135	struct virtio_gpu_device *vgdev;
	136	/* this will expand later */
	137	struct virtqueue *vqs[2];
62fb7a5e	138	u32 num_scanouts, num_capsets;
dc5698e8 DA	139	int ret;
	140
	141	if (!virtio_has_feature(dev->virtdev, VIRTIO_F_VERSION_1))
	142	return -ENODEV;
	143
	144	vgdev = kzalloc(sizeof(struct virtio_gpu_device), GFP_KERNEL);
	145	if (!vgdev)
	146	return -ENOMEM;
	147
	148	vgdev->ddev = dev;
	149	dev->dev_private = vgdev;
	150	vgdev->vdev = dev->virtdev;
	151	vgdev->dev = dev->dev;
	152
	153	spin_lock_init(&vgdev->display_info_lock);
	154	spin_lock_init(&vgdev->ctx_id_idr_lock);
	155	idr_init(&vgdev->ctx_id_idr);
	156	spin_lock_init(&vgdev->resource_idr_lock);
	157	idr_init(&vgdev->resource_idr);
	158	init_waitqueue_head(&vgdev->resp_wq);
	159	virtio_gpu_init_vq(&vgdev->ctrlq, virtio_gpu_dequeue_ctrl_func);
	160	virtio_gpu_init_vq(&vgdev->cursorq, virtio_gpu_dequeue_cursor_func);
	161
f54d1867	162	vgdev->fence_drv.context = dma_fence_context_alloc(1);
dc5698e8 DA	163	spin_lock_init(&vgdev->fence_drv.lock);
dc5698e8 DA	164	INIT_LIST_HEAD(&vgdev->fence_drv.fences);
62fb7a5e	165	INIT_LIST_HEAD(&vgdev->cap_cache);
dc5698e8 DA	166	INIT_WORK(&vgdev->config_changed_work,
	167	virtio_gpu_config_changed_work_func);
	168
ff2ac58a	169	#ifdef __LITTLE_ENDIAN
62fb7a5e GH	170	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL))
	171	vgdev->has_virgl_3d = true;
	172	DRM_INFO("virgl 3d acceleration %s\n",
ff2ac58a LV	173	vgdev->has_virgl_3d ? "enabled" : "not supported by host");
	174	#else
	175	DRM_INFO("virgl 3d acceleration not supported by guest\n");
	176	#endif
62fb7a5e	177
dc5698e8	178	ret = vgdev->vdev->config->find_vqs(vgdev->vdev, 2, vqs,
fb5e31d9	179	callbacks, names, NULL);
dc5698e8 DA	180	if (ret) {
	181	DRM_ERROR("failed to find virt queues\n");
	182	goto err_vqs;
	183	}
	184	vgdev->ctrlq.vq = vqs[0];
	185	vgdev->cursorq.vq = vqs[1];
	186	ret = virtio_gpu_alloc_vbufs(vgdev);
	187	if (ret) {
	188	DRM_ERROR("failed to alloc vbufs\n");
	189	goto err_vbufs;
	190	}
	191
	192	ret = virtio_gpu_ttm_init(vgdev);
	193	if (ret) {
	194	DRM_ERROR("failed to init ttm %d\n", ret);
	195	goto err_ttm;
	196	}
	197
	198	/* get display info */
	199	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
	200	num_scanouts, &num_scanouts);
	201	vgdev->num_scanouts = min_t(uint32_t, num_scanouts,
	202	VIRTIO_GPU_MAX_SCANOUTS);
	203	if (!vgdev->num_scanouts) {
	204	DRM_ERROR("num_scanouts is zero\n");
	205	ret = -EINVAL;
	206	goto err_scanouts;
	207	}
62fb7a5e GH	208	DRM_INFO("number of scanouts: %d\n", num_scanouts);
	209
	210	virtio_cread(vgdev->vdev, struct virtio_gpu_config,
	211	num_capsets, &num_capsets);
	212	DRM_INFO("number of cap sets: %d\n", num_capsets);
dc5698e8 DA	213
	214	ret = virtio_gpu_modeset_init(vgdev);
	215	if (ret)
	216	goto err_modeset;
	217
	218	virtio_device_ready(vgdev->vdev);
	219	vgdev->vqs_ready = true;
	220
62fb7a5e GH	221	if (num_capsets)
62fb7a5e GH	222	virtio_gpu_get_capsets(vgdev, num_capsets);
441012af DA	223	virtio_gpu_cmd_get_display_info(vgdev);
	224	wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
	225	5 * HZ);
dc5698e8 DA	226	if (virtio_gpu_fbdev)
dc5698e8 DA	227	virtio_gpu_fbdev_init(vgdev);
dc5698e8 DA	228
	229	return 0;
	230
	231	err_modeset:
	232	err_scanouts:
	233	virtio_gpu_ttm_fini(vgdev);
	234	err_ttm:
	235	virtio_gpu_free_vbufs(vgdev);
	236	err_vbufs:
	237	vgdev->vdev->config->del_vqs(vgdev->vdev);
	238	err_vqs:
	239	kfree(vgdev);
	240	return ret;
	241	}
	242
62fb7a5e GH	243	static void virtio_gpu_cleanup_cap_cache(struct virtio_gpu_device *vgdev)
	244	{
	245	struct virtio_gpu_drv_cap_cache cache_ent, tmp;
	246
	247	list_for_each_entry_safe(cache_ent, tmp, &vgdev->cap_cache, head) {
	248	kfree(cache_ent->caps_cache);
	249	kfree(cache_ent);
	250	}
	251	}
	252
11b3c20b	253	void virtio_gpu_driver_unload(struct drm_device *dev)
dc5698e8 DA	254	{
	255	struct virtio_gpu_device *vgdev = dev->dev_private;
	256
	257	vgdev->vqs_ready = false;
	258	flush_work(&vgdev->ctrlq.dequeue_work);
	259	flush_work(&vgdev->cursorq.dequeue_work);
	260	flush_work(&vgdev->config_changed_work);
	261	vgdev->vdev->config->del_vqs(vgdev->vdev);
	262
	263	virtio_gpu_modeset_fini(vgdev);
	264	virtio_gpu_ttm_fini(vgdev);
	265	virtio_gpu_free_vbufs(vgdev);
62fb7a5e GH	266	virtio_gpu_cleanup_cap_cache(vgdev);
62fb7a5e GH	267	kfree(vgdev->capsets);
dc5698e8	268	kfree(vgdev);
dc5698e8	269	}
62fb7a5e GH	270
	271	int virtio_gpu_driver_open(struct drm_device dev, struct drm_file file)
	272	{
	273	struct virtio_gpu_device *vgdev = dev->dev_private;
	274	struct virtio_gpu_fpriv *vfpriv;
	275	uint32_t id;
	276	char dbgname[64], tmpname[TASK_COMM_LEN];
	277
	278	/* can't create contexts without 3d renderer */
	279	if (!vgdev->has_virgl_3d)
	280	return 0;
	281
	282	get_task_comm(tmpname, current);
	283	snprintf(dbgname, sizeof(dbgname), "%s", tmpname);
	284	dbgname[63] = 0;
	285	/* allocate a virt GPU context for this opener */
	286	vfpriv = kzalloc(sizeof(*vfpriv), GFP_KERNEL);
	287	if (!vfpriv)
	288	return -ENOMEM;
	289
	290	virtio_gpu_context_create(vgdev, strlen(dbgname), dbgname, &id);
	291
	292	vfpriv->ctx_id = id;
	293	file->driver_priv = vfpriv;
	294	return 0;
	295	}
	296
	297	void virtio_gpu_driver_postclose(struct drm_device dev, struct drm_file file)
	298	{
	299	struct virtio_gpu_device *vgdev = dev->dev_private;
	300	struct virtio_gpu_fpriv *vfpriv;
	301
	302	if (!vgdev->has_virgl_3d)
	303	return;
	304
	305	vfpriv = file->driver_priv;
	306
	307	virtio_gpu_context_destroy(vgdev, vfpriv->ctx_id);
	308	kfree(vfpriv);
	309	file->driver_priv = NULL;
	310	}