[linux-block.git] / drivers / gpu / drm / bochs / bochs_drv.c

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/mm.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_probe_helper.h>

#include "bochs.h"

static int bochs_modeset = -1;
module_param_named(modeset, bochs_modeset, int, 0444);
MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");

/* ---------------------------------------------------------------------- */
/* drm interface                                                          */

static void bochs_unload(struct drm_device *dev)
{
	struct bochs_device *bochs = dev->dev_private;

	bochs_kms_fini(bochs);
	bochs_mm_fini(bochs);
	bochs_hw_fini(dev);
	kfree(bochs);
	dev->dev_private = NULL;
}

static int bochs_load(struct drm_device *dev)
{
	struct bochs_device *bochs;
	int ret;

	bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
	if (bochs == NULL)
		return -ENOMEM;
	dev->dev_private = bochs;
	bochs->dev = dev;

	ret = bochs_hw_init(dev);
	if (ret)
		goto err;

	ret = bochs_mm_init(bochs);
	if (ret)
		goto err;

	ret = bochs_kms_init(bochs);
	if (ret)
		goto err;

	return 0;

err:
	bochs_unload(dev);
	return ret;
}

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

static struct drm_driver bochs_driver = {
	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
				  DRIVER_PRIME,
	.fops			= &bochs_fops,
	.name			= "bochs-drm",
	.desc			= "bochs dispi vga interface (qemu stdvga)",
	.date			= "20130925",
	.major			= 1,
	.minor			= 0,
	.gem_free_object_unlocked = bochs_gem_free_object,
	.dumb_create            = bochs_dumb_create,
	.dumb_map_offset        = bochs_dumb_mmap_offset,

	.gem_prime_export = drm_gem_prime_export,
	.gem_prime_import = drm_gem_prime_import,
	.gem_prime_pin = bochs_gem_prime_pin,
	.gem_prime_unpin = bochs_gem_prime_unpin,
	.gem_prime_vmap = bochs_gem_prime_vmap,
	.gem_prime_vunmap = bochs_gem_prime_vunmap,
	.gem_prime_mmap = bochs_gem_prime_mmap,
};

/* ---------------------------------------------------------------------- */
/* pm interface                                                           */

#ifdef CONFIG_PM_SLEEP
static int bochs_pm_suspend(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *drm_dev = pci_get_drvdata(pdev);

	return drm_mode_config_helper_suspend(drm_dev);
}

static int bochs_pm_resume(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *drm_dev = pci_get_drvdata(pdev);

	return drm_mode_config_helper_resume(drm_dev);
}
#endif

static const struct dev_pm_ops bochs_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
				bochs_pm_resume)
};

/* ---------------------------------------------------------------------- */
/* pci interface                                                          */

static int bochs_pci_probe(struct pci_dev *pdev,
			   const struct pci_device_id *ent)
{
	struct drm_device *dev;
	unsigned long fbsize;
	int ret;

	fbsize = pci_resource_len(pdev, 0);
	if (fbsize < 4 * 1024 * 1024) {
		DRM_ERROR("less than 4 MB video memory, ignoring device\n");
		return -ENOMEM;
	}

	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "bochsdrmfb");
	if (ret)
		return ret;

	dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
	if (IS_ERR(dev))
		return PTR_ERR(dev);

	dev->pdev = pdev;
	pci_set_drvdata(pdev, dev);

	ret = bochs_load(dev);
	if (ret)
		goto err_free_dev;

	ret = drm_dev_register(dev, 0);
	if (ret)
		goto err_unload;

	drm_fbdev_generic_setup(dev, 32);
	return ret;

err_unload:
	bochs_unload(dev);
err_free_dev:
	drm_dev_put(dev);
	return ret;
}

static void bochs_pci_remove(struct pci_dev *pdev)
{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_dev_unregister(dev);
	bochs_unload(dev);
	drm_dev_put(dev);
}

static const struct pci_device_id bochs_pci_tbl[] = {
	{
		.vendor      = 0x1234,
		.device      = 0x1111,
		.subvendor   = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
		.subdevice   = PCI_SUBDEVICE_ID_QEMU,
		.driver_data = BOCHS_QEMU_STDVGA,
	},
	{
		.vendor      = 0x1234,
		.device      = 0x1111,
		.subvendor   = PCI_ANY_ID,
		.subdevice   = PCI_ANY_ID,
		.driver_data = BOCHS_UNKNOWN,
	},
	{ /* end of list */ }
};

static struct pci_driver bochs_pci_driver = {
	.name =		"bochs-drm",
	.id_table =	bochs_pci_tbl,
	.probe =	bochs_pci_probe,
	.remove =	bochs_pci_remove,
	.driver.pm =    &bochs_pm_ops,
};

/* ---------------------------------------------------------------------- */
/* module init/exit                                                       */

static int __init bochs_init(void)
{
	if (vgacon_text_force() && bochs_modeset == -1)
		return -EINVAL;

	if (bochs_modeset == 0)
		return -EINVAL;

	return pci_register_driver(&bochs_pci_driver);
}

static void __exit bochs_exit(void)
{
	pci_unregister_driver(&bochs_pci_driver);
}

module_init(bochs_init);
module_exit(bochs_exit);

MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License as published by
	4	* the Free Software Foundation; either version 2 of the License, or
	5	* (at your option) any later version.
	6	*/
	7
	8	#include <linux/mm.h>
	9	#include <linux/module.h>
	10	#include <linux/slab.h>
	11	#include <drm/drm_fb_helper.h>
	12	#include <drm/drm_probe_helper.h>
	13
	14	#include "bochs.h"
	15
	16	static int bochs_modeset = -1;
	17	module_param_named(modeset, bochs_modeset, int, 0444);
	18	MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
	19
	20	/* ---------------------------------------------------------------------- */
	21	/* drm interface */
	22
	23	static void bochs_unload(struct drm_device *dev)
	24	{
	25	struct bochs_device *bochs = dev->dev_private;
	26
	27	bochs_kms_fini(bochs);
	28	bochs_mm_fini(bochs);
	29	bochs_hw_fini(dev);
	30	kfree(bochs);
	31	dev->dev_private = NULL;
	32	}
	33
	34	static int bochs_load(struct drm_device *dev)
	35	{
	36	struct bochs_device *bochs;
	37	int ret;
	38
	39	bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
	40	if (bochs == NULL)
	41	return -ENOMEM;
	42	dev->dev_private = bochs;
	43	bochs->dev = dev;
	44
	45	ret = bochs_hw_init(dev);
	46	if (ret)
	47	goto err;
	48
	49	ret = bochs_mm_init(bochs);
	50	if (ret)
	51	goto err;
	52
	53	ret = bochs_kms_init(bochs);
	54	if (ret)
	55	goto err;
	56
	57	return 0;
	58
	59	err:
	60	bochs_unload(dev);
	61	return ret;
	62	}
	63
	64	static const struct file_operations bochs_fops = {
	65	.owner = THIS_MODULE,
	66	.open = drm_open,
	67	.release = drm_release,
	68	.unlocked_ioctl = drm_ioctl,
	69	.compat_ioctl = drm_compat_ioctl,
	70	.poll = drm_poll,
	71	.read = drm_read,
	72	.llseek = no_llseek,
	73	.mmap = bochs_mmap,
	74	};
	75
	76	static struct drm_driver bochs_driver = {
	77	.driver_features = DRIVER_GEM \| DRIVER_MODESET \| DRIVER_ATOMIC \|
	78	DRIVER_PRIME,
	79	.fops = &bochs_fops,
	80	.name = "bochs-drm",
	81	.desc = "bochs dispi vga interface (qemu stdvga)",
	82	.date = "20130925",
	83	.major = 1,
	84	.minor = 0,
	85	.gem_free_object_unlocked = bochs_gem_free_object,
	86	.dumb_create = bochs_dumb_create,
	87	.dumb_map_offset = bochs_dumb_mmap_offset,
	88
	89	.gem_prime_export = drm_gem_prime_export,
	90	.gem_prime_import = drm_gem_prime_import,
	91	.gem_prime_pin = bochs_gem_prime_pin,
	92	.gem_prime_unpin = bochs_gem_prime_unpin,
	93	.gem_prime_vmap = bochs_gem_prime_vmap,
	94	.gem_prime_vunmap = bochs_gem_prime_vunmap,
	95	.gem_prime_mmap = bochs_gem_prime_mmap,
	96	};
	97
	98	/* ---------------------------------------------------------------------- */
	99	/* pm interface */
	100
	101	#ifdef CONFIG_PM_SLEEP
	102	static int bochs_pm_suspend(struct device *dev)
	103	{
	104	struct pci_dev *pdev = to_pci_dev(dev);
	105	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	106
	107	return drm_mode_config_helper_suspend(drm_dev);
	108	}
	109
	110	static int bochs_pm_resume(struct device *dev)
	111	{
	112	struct pci_dev *pdev = to_pci_dev(dev);
	113	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	114
	115	return drm_mode_config_helper_resume(drm_dev);
	116	}
	117	#endif
	118
	119	static const struct dev_pm_ops bochs_pm_ops = {
	120	SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
	121	bochs_pm_resume)
	122	};
	123
	124	/* ---------------------------------------------------------------------- */
	125	/* pci interface */
	126
	127	static int bochs_pci_probe(struct pci_dev *pdev,
	128	const struct pci_device_id *ent)
	129	{
	130	struct drm_device *dev;
	131	unsigned long fbsize;
	132	int ret;
	133
	134	fbsize = pci_resource_len(pdev, 0);
	135	if (fbsize < 4 * 1024 * 1024) {
	136	DRM_ERROR("less than 4 MB video memory, ignoring device\n");
	137	return -ENOMEM;
	138	}
	139
	140	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "bochsdrmfb");
	141	if (ret)
	142	return ret;
	143
	144	dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
	145	if (IS_ERR(dev))
	146	return PTR_ERR(dev);
	147
	148	dev->pdev = pdev;
	149	pci_set_drvdata(pdev, dev);
	150
	151	ret = bochs_load(dev);
	152	if (ret)
	153	goto err_free_dev;
	154
	155	ret = drm_dev_register(dev, 0);
	156	if (ret)
	157	goto err_unload;
	158
	159	drm_fbdev_generic_setup(dev, 32);
	160	return ret;
	161
	162	err_unload:
	163	bochs_unload(dev);
	164	err_free_dev:
	165	drm_dev_put(dev);
	166	return ret;
	167	}
	168
	169	static void bochs_pci_remove(struct pci_dev *pdev)
	170	{
	171	struct drm_device *dev = pci_get_drvdata(pdev);
	172
	173	drm_dev_unregister(dev);
	174	bochs_unload(dev);
	175	drm_dev_put(dev);
	176	}
	177
	178	static const struct pci_device_id bochs_pci_tbl[] = {
	179	{
	180	.vendor = 0x1234,
	181	.device = 0x1111,
	182	.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
	183	.subdevice = PCI_SUBDEVICE_ID_QEMU,
	184	.driver_data = BOCHS_QEMU_STDVGA,
	185	},
	186	{
	187	.vendor = 0x1234,
	188	.device = 0x1111,
	189	.subvendor = PCI_ANY_ID,
	190	.subdevice = PCI_ANY_ID,
	191	.driver_data = BOCHS_UNKNOWN,
	192	},
	193	{ /* end of list */ }
	194	};
	195
	196	static struct pci_driver bochs_pci_driver = {
	197	.name = "bochs-drm",
	198	.id_table = bochs_pci_tbl,
	199	.probe = bochs_pci_probe,
	200	.remove = bochs_pci_remove,
	201	.driver.pm = &bochs_pm_ops,
	202	};
	203
	204	/* ---------------------------------------------------------------------- */
	205	/* module init/exit */
	206
	207	static int __init bochs_init(void)
	208	{
	209	if (vgacon_text_force() && bochs_modeset == -1)
	210	return -EINVAL;
	211
	212	if (bochs_modeset == 0)
	213	return -EINVAL;
	214
	215	return pci_register_driver(&bochs_pci_driver);
	216	}
	217
	218	static void __exit bochs_exit(void)
	219	{
	220	pci_unregister_driver(&bochs_pci_driver);
	221	}
	222
	223	module_init(bochs_init);
	224	module_exit(bochs_exit);
	225
	226	MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
	227	MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
	228	MODULE_LICENSE("GPL");