[linux-2.6-block.git] / drivers / gpu / drm / virtio / virtgpu_drv.c

/*
 * 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/module.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <drm/drmP.h>
#include <drm/drm.h>

#include "virtgpu_drv.h"
static struct drm_driver driver;

static int virtio_gpu_modeset = -1;

MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, virtio_gpu_modeset, int, 0400);

static int virtio_gpu_probe(struct virtio_device *vdev)
{
	if (vgacon_text_force() && virtio_gpu_modeset == -1)
		return -EINVAL;

	if (virtio_gpu_modeset == 0)
		return -EINVAL;

	return drm_virtio_init(&driver, vdev);
}

static void virtio_gpu_remove(struct virtio_device *vdev)
{
	struct drm_device *dev = vdev->priv;

	drm_put_dev(dev);
}

static void virtio_gpu_config_changed(struct virtio_device *vdev)
{
	struct drm_device *dev = vdev->priv;
	struct virtio_gpu_device *vgdev = dev->dev_private;

	schedule_work(&vgdev->config_changed_work);
}

static struct virtio_device_id id_table[] = {
	{ VIRTIO_ID_GPU, VIRTIO_DEV_ANY_ID },
	{ 0 },
};

static unsigned int features[] = {
#ifdef __LITTLE_ENDIAN
	/*
	 * Gallium command stream send by virgl is native endian.
	 * Because of that we only support little endian guests on
	 * little endian hosts.
	 */
	VIRTIO_GPU_F_VIRGL,
#endif
	VIRTIO_GPU_F_EDID,
};
static struct virtio_driver virtio_gpu_driver = {
	.feature_table = features,
	.feature_table_size = ARRAY_SIZE(features),
	.driver.name = KBUILD_MODNAME,
	.driver.owner = THIS_MODULE,
	.id_table = id_table,
	.probe = virtio_gpu_probe,
	.remove = virtio_gpu_remove,
	.config_changed = virtio_gpu_config_changed
};

module_virtio_driver(virtio_gpu_driver);

MODULE_DEVICE_TABLE(virtio, id_table);
MODULE_DESCRIPTION("Virtio GPU driver");
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("Dave Airlie <airlied@redhat.com>");
MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
MODULE_AUTHOR("Alon Levy");

static const struct file_operations virtio_gpu_driver_fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.mmap = virtio_gpu_mmap,
	.poll = drm_poll,
	.read = drm_read,
	.unlocked_ioctl	= drm_ioctl,
	.release = drm_release,
	.compat_ioctl = drm_compat_ioctl,
	.llseek = noop_llseek,
};

static struct drm_driver driver = {
	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_RENDER | DRIVER_ATOMIC,
	.load = virtio_gpu_driver_load,
	.unload = virtio_gpu_driver_unload,
	.open = virtio_gpu_driver_open,
	.postclose = virtio_gpu_driver_postclose,

	.dumb_create = virtio_gpu_mode_dumb_create,
	.dumb_map_offset = virtio_gpu_mode_dumb_mmap,

#if defined(CONFIG_DEBUG_FS)
	.debugfs_init = virtio_gpu_debugfs_init,
#endif
	.gem_prime_export = drm_gem_prime_export,
	.gem_prime_import = drm_gem_prime_import,
	.gem_prime_pin = virtgpu_gem_prime_pin,
	.gem_prime_unpin = virtgpu_gem_prime_unpin,
	.gem_prime_vmap = virtgpu_gem_prime_vmap,
	.gem_prime_vunmap = virtgpu_gem_prime_vunmap,
	.gem_prime_mmap = virtgpu_gem_prime_mmap,

	.gem_free_object_unlocked = virtio_gpu_gem_free_object,
	.gem_open_object = virtio_gpu_gem_object_open,
	.gem_close_object = virtio_gpu_gem_object_close,
	.fops = &virtio_gpu_driver_fops,

	.ioctls = virtio_gpu_ioctls,
	.num_ioctls = DRM_VIRTIO_NUM_IOCTLS,

	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
	.patchlevel = DRIVER_PATCHLEVEL,
};
Commit	Line	Data
dc5698e8 DA	1	/*
	2	* Copyright (C) 2015 Red Hat, Inc.
	3	* All Rights Reserved.
	4	*
	5	* Authors:
	6	* Dave Airlie <airlied@redhat.com>
	7	* Gerd Hoffmann <kraxel@redhat.com>
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a
	10	* copy of this software and associated documentation files (the "Software"),
	11	* to deal in the Software without restriction, including without limitation
	12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	13	* and/or sell copies of the Software, and to permit persons to whom the
	14	* Software is furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice (including the next
	17	* paragraph) shall be included in all copies or substantial portions of the
	18	* Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	24	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	25	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	26	* OTHER DEALINGS IN THE SOFTWARE.
	27	*/
	28
	29	#include <linux/module.h>
	30	#include <linux/console.h>
	31	#include <linux/pci.h>
ff67a25d MY	32	#include <drm/drmP.h>
ff67a25d MY	33	#include <drm/drm.h>
dc5698e8 DA	34
	35	#include "virtgpu_drv.h"
	36	static struct drm_driver driver;
	37
	38	static int virtio_gpu_modeset = -1;
	39
	40	MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
	41	module_param_named(modeset, virtio_gpu_modeset, int, 0400);
	42
	43	static int virtio_gpu_probe(struct virtio_device *vdev)
	44	{
dc5698e8 DA	45	if (vgacon_text_force() && virtio_gpu_modeset == -1)
dc5698e8 DA	46	return -EINVAL;
dc5698e8 DA	47
	48	if (virtio_gpu_modeset == 0)
	49	return -EINVAL;
	50
	51	return drm_virtio_init(&driver, vdev);
	52	}
	53
	54	static void virtio_gpu_remove(struct virtio_device *vdev)
	55	{
	56	struct drm_device *dev = vdev->priv;
9d492b6b	57
dc5698e8 DA	58	drm_put_dev(dev);
	59	}
	60
	61	static void virtio_gpu_config_changed(struct virtio_device *vdev)
	62	{
	63	struct drm_device *dev = vdev->priv;
	64	struct virtio_gpu_device *vgdev = dev->dev_private;
	65
	66	schedule_work(&vgdev->config_changed_work);
	67	}
	68
	69	static struct virtio_device_id id_table[] = {
	70	{ VIRTIO_ID_GPU, VIRTIO_DEV_ANY_ID },
	71	{ 0 },
	72	};
	73
	74	static unsigned int features[] = {
62fb7a5e GH	75	#ifdef __LITTLE_ENDIAN
	76	/*
	77	* Gallium command stream send by virgl is native endian.
	78	* Because of that we only support little endian guests on
	79	* little endian hosts.
	80	*/
	81	VIRTIO_GPU_F_VIRGL,
	82	#endif
b4b01b49	83	VIRTIO_GPU_F_EDID,
dc5698e8 DA	84	};
	85	static struct virtio_driver virtio_gpu_driver = {
	86	.feature_table = features,
	87	.feature_table_size = ARRAY_SIZE(features),
	88	.driver.name = KBUILD_MODNAME,
	89	.driver.owner = THIS_MODULE,
	90	.id_table = id_table,
	91	.probe = virtio_gpu_probe,
	92	.remove = virtio_gpu_remove,
	93	.config_changed = virtio_gpu_config_changed
	94	};
	95
	96	module_virtio_driver(virtio_gpu_driver);
	97
	98	MODULE_DEVICE_TABLE(virtio, id_table);
	99	MODULE_DESCRIPTION("Virtio GPU driver");
	100	MODULE_LICENSE("GPL and additional rights");
	101	MODULE_AUTHOR("Dave Airlie <airlied@redhat.com>");
	102	MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
	103	MODULE_AUTHOR("Alon Levy");
	104
	105	static const struct file_operations virtio_gpu_driver_fops = {
	106	.owner = THIS_MODULE,
	107	.open = drm_open,
	108	.mmap = virtio_gpu_mmap,
	109	.poll = drm_poll,
	110	.read = drm_read,
	111	.unlocked_ioctl = drm_ioctl,
	112	.release = drm_release,
dc5698e8	113	.compat_ioctl = drm_compat_ioctl,
dc5698e8 DA	114	.llseek = noop_llseek,
	115	};
	116
dc5698e8	117	static struct drm_driver driver = {
5443ce86	118	.driver_features = DRIVER_MODESET \| DRIVER_GEM \| DRIVER_PRIME \| DRIVER_RENDER \| DRIVER_ATOMIC,
dc5698e8 DA	119	.load = virtio_gpu_driver_load,
dc5698e8 DA	120	.unload = virtio_gpu_driver_unload,
62fb7a5e GH	121	.open = virtio_gpu_driver_open,
62fb7a5e GH	122	.postclose = virtio_gpu_driver_postclose,
dc5698e8 DA	123
	124	.dumb_create = virtio_gpu_mode_dumb_create,
	125	.dumb_map_offset = virtio_gpu_mode_dumb_mmap,
dc5698e8 DA	126
	127	#if defined(CONFIG_DEBUG_FS)
	128	.debugfs_init = virtio_gpu_debugfs_init,
dc5698e8	129	#endif
11a8f280 DA	130	.gem_prime_export = drm_gem_prime_export,
	131	.gem_prime_import = drm_gem_prime_import,
	132	.gem_prime_pin = virtgpu_gem_prime_pin,
	133	.gem_prime_unpin = virtgpu_gem_prime_unpin,
11a8f280 DA	134	.gem_prime_vmap = virtgpu_gem_prime_vmap,
	135	.gem_prime_vunmap = virtgpu_gem_prime_vunmap,
	136	.gem_prime_mmap = virtgpu_gem_prime_mmap,
dc5698e8	137
bd884b74	138	.gem_free_object_unlocked = virtio_gpu_gem_free_object,
62fb7a5e GH	139	.gem_open_object = virtio_gpu_gem_object_open,
62fb7a5e GH	140	.gem_close_object = virtio_gpu_gem_object_close,
dc5698e8 DA	141	.fops = &virtio_gpu_driver_fops,
dc5698e8 DA	142
62fb7a5e GH	143	.ioctls = virtio_gpu_ioctls,
	144	.num_ioctls = DRM_VIRTIO_NUM_IOCTLS,
	145
dc5698e8 DA	146	.name = DRIVER_NAME,
	147	.desc = DRIVER_DESC,
	148	.date = DRIVER_DATE,
	149	.major = DRIVER_MAJOR,
	150	.minor = DRIVER_MINOR,
	151	.patchlevel = DRIVER_PATCHLEVEL,
	152	};