[deliverable/linux.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 "bochs.h"

static bool enable_fbdev = true;
module_param_named(fbdev, enable_fbdev, bool, 0444);
MODULE_PARM_DESC(fbdev, "register fbdev device");

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

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

	bochs_fbdev_fini(bochs);
	bochs_kms_fini(bochs);
	bochs_mm_fini(bochs);
	bochs_hw_fini(dev);
	kfree(bochs);
	dev->dev_private = NULL;
	return 0;
}

static int bochs_load(struct drm_device *dev, unsigned long flags)
{
	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, flags);
	if (ret)
		goto err;

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

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

	if (enable_fbdev)
		bochs_fbdev_init(bochs);

	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,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= drm_compat_ioctl,
#endif
	.poll		= drm_poll,
	.read		= drm_read,
	.llseek		= no_llseek,
	.mmap           = bochs_mmap,
};

static struct drm_driver bochs_driver = {
	.driver_features	= DRIVER_GEM | DRIVER_MODESET,
	.load			= bochs_load,
	.unload			= bochs_unload,
	.set_busid		= drm_pci_set_busid,
	.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,
	.dumb_destroy           = drm_gem_dumb_destroy,
};

/* ---------------------------------------------------------------------- */
/* 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);
	struct bochs_device *bochs = drm_dev->dev_private;

	drm_kms_helper_poll_disable(drm_dev);

	if (bochs->fb.initialized) {
		console_lock();
		drm_fb_helper_set_suspend(&bochs->fb.helper, 1);
		console_unlock();
	}

	return 0;
}

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);
	struct bochs_device *bochs = drm_dev->dev_private;

	drm_helper_resume_force_mode(drm_dev);

	if (bochs->fb.initialized) {
		console_lock();
		drm_fb_helper_set_suspend(&bochs->fb.helper, 0);
		console_unlock();
	}

	drm_kms_helper_poll_enable(drm_dev);
	return 0;
}
#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_kick_out_firmware_fb(struct pci_dev *pdev)
{
	struct apertures_struct *ap;

	ap = alloc_apertures(1);
	if (!ap)
		return -ENOMEM;

	ap->ranges[0].base = pci_resource_start(pdev, 0);
	ap->ranges[0].size = pci_resource_len(pdev, 0);
	drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
	kfree(ap);

	return 0;
}

static int bochs_pci_probe(struct pci_dev *pdev,
			   const struct pci_device_id *ent)
{
	int ret;

	ret = bochs_kick_out_firmware_fb(pdev);
	if (ret)
		return ret;

	return drm_get_pci_dev(pdev, ent, &bochs_driver);
}

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

	drm_put_dev(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)
{
	return drm_pci_init(&bochs_driver, &bochs_pci_driver);
}

static void __exit bochs_exit(void)
{
	drm_pci_exit(&bochs_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
0a6659bd GH	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>
44adece5	11	#include <drm/drm_fb_helper.h>
0a6659bd GH	12
	13	#include "bochs.h"
	14
	15	static bool enable_fbdev = true;
	16	module_param_named(fbdev, enable_fbdev, bool, 0444);
	17	MODULE_PARM_DESC(fbdev, "register fbdev device");
	18
	19	/* ---------------------------------------------------------------------- */
	20	/* drm interface */
	21
	22	static int bochs_unload(struct drm_device *dev)
	23	{
	24	struct bochs_device *bochs = dev->dev_private;
	25
	26	bochs_fbdev_fini(bochs);
	27	bochs_kms_fini(bochs);
	28	bochs_mm_fini(bochs);
	29	bochs_hw_fini(dev);
	30	kfree(bochs);
	31	dev->dev_private = NULL;
	32	return 0;
	33	}
	34
	35	static int bochs_load(struct drm_device *dev, unsigned long flags)
	36	{
	37	struct bochs_device *bochs;
	38	int ret;
	39
	40	bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
	41	if (bochs == NULL)
	42	return -ENOMEM;
	43	dev->dev_private = bochs;
	44	bochs->dev = dev;
	45
	46	ret = bochs_hw_init(dev, flags);
	47	if (ret)
	48	goto err;
	49
	50	ret = bochs_mm_init(bochs);
	51	if (ret)
	52	goto err;
	53
	54	ret = bochs_kms_init(bochs);
	55	if (ret)
	56	goto err;
	57
	58	if (enable_fbdev)
	59	bochs_fbdev_init(bochs);
	60
	61	return 0;
	62
	63	err:
	64	bochs_unload(dev);
	65	return ret;
	66	}
	67
	68	static const struct file_operations bochs_fops = {
	69	.owner = THIS_MODULE,
	70	.open = drm_open,
	71	.release = drm_release,
	72	.unlocked_ioctl = drm_ioctl,
	73	#ifdef CONFIG_COMPAT
	74	.compat_ioctl = drm_compat_ioctl,
	75	#endif
76	.poll = drm_poll,
77	.read = drm_read,
78	.llseek = no_llseek,
79	.mmap = bochs_mmap,
80	};
81
82	static struct drm_driver bochs_driver = {
83	.driver_features = DRIVER_GEM \| DRIVER_MODESET,
84	.load = bochs_load,
85	.unload = bochs_unload,
915b4d11	86	.set_busid = drm_pci_set_busid,
0a6659bd GH	87	.fops = &bochs_fops,
	88	.name = "bochs-drm",
	89	.desc = "bochs dispi vga interface (qemu stdvga)",
	90	.date = "20130925",
	91	.major = 1,
	92	.minor = 0,
6f2c1c15	93	.gem_free_object_unlocked = bochs_gem_free_object,
0a6659bd GH	94	.dumb_create = bochs_dumb_create,
	95	.dumb_map_offset = bochs_dumb_mmap_offset,
	96	.dumb_destroy = drm_gem_dumb_destroy,
	97	};
	98
b8ccd70f GH	99	/* ---------------------------------------------------------------------- */
	100	/* pm interface */
	101
150cee9c	102	#ifdef CONFIG_PM_SLEEP
b8ccd70f GH	103	static int bochs_pm_suspend(struct device *dev)
	104	{
	105	struct pci_dev *pdev = to_pci_dev(dev);
	106	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	107	struct bochs_device *bochs = drm_dev->dev_private;
	108
	109	drm_kms_helper_poll_disable(drm_dev);
	110
	111	if (bochs->fb.initialized) {
	112	console_lock();
6a752972	113	drm_fb_helper_set_suspend(&bochs->fb.helper, 1);
b8ccd70f GH	114	console_unlock();
	115	}
	116
	117	return 0;
	118	}
	119
	120	static int bochs_pm_resume(struct device *dev)
	121	{
	122	struct pci_dev *pdev = to_pci_dev(dev);
	123	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	124	struct bochs_device *bochs = drm_dev->dev_private;
	125
	126	drm_helper_resume_force_mode(drm_dev);
	127
	128	if (bochs->fb.initialized) {
	129	console_lock();
6a752972	130	drm_fb_helper_set_suspend(&bochs->fb.helper, 0);
b8ccd70f GH	131	console_unlock();
	132	}
	133
	134	drm_kms_helper_poll_enable(drm_dev);
	135	return 0;
	136	}
150cee9c	137	#endif
b8ccd70f GH	138
	139	static const struct dev_pm_ops bochs_pm_ops = {
	140	SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
	141	bochs_pm_resume)
	142	};
	143
0a6659bd GH	144	/* ---------------------------------------------------------------------- */
	145	/* pci interface */
	146
	147	static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
	148	{
	149	struct apertures_struct *ap;
	150
	151	ap = alloc_apertures(1);
	152	if (!ap)
	153	return -ENOMEM;
	154
	155	ap->ranges[0].base = pci_resource_start(pdev, 0);
	156	ap->ranges[0].size = pci_resource_len(pdev, 0);
44adece5	157	drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
0a6659bd GH	158	kfree(ap);
	159
	160	return 0;
	161	}
	162
	163	static int bochs_pci_probe(struct pci_dev *pdev,
	164	const struct pci_device_id *ent)
	165	{
	166	int ret;
	167
	168	ret = bochs_kick_out_firmware_fb(pdev);
	169	if (ret)
	170	return ret;
	171
	172	return drm_get_pci_dev(pdev, ent, &bochs_driver);
	173	}
	174
	175	static void bochs_pci_remove(struct pci_dev *pdev)
	176	{
	177	struct drm_device *dev = pci_get_drvdata(pdev);
	178
	179	drm_put_dev(dev);
	180	}
	181
9baa3c34	182	static const struct pci_device_id bochs_pci_tbl[] = {
0a6659bd GH	183	{
	184	.vendor = 0x1234,
	185	.device = 0x1111,
caf02abf RJ	186	.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
caf02abf RJ	187	.subdevice = PCI_SUBDEVICE_ID_QEMU,
0a6659bd GH	188	.driver_data = BOCHS_QEMU_STDVGA,
	189	},
	190	{
	191	.vendor = 0x1234,
	192	.device = 0x1111,
	193	.subvendor = PCI_ANY_ID,
	194	.subdevice = PCI_ANY_ID,
	195	.driver_data = BOCHS_UNKNOWN,
	196	},
	197	{ /* end of list */ }
	198	};
	199
	200	static struct pci_driver bochs_pci_driver = {
	201	.name = "bochs-drm",
	202	.id_table = bochs_pci_tbl,
	203	.probe = bochs_pci_probe,
	204	.remove = bochs_pci_remove,
b8ccd70f	205	.driver.pm = &bochs_pm_ops,
0a6659bd GH	206	};
	207
	208	/* ---------------------------------------------------------------------- */
	209	/* module init/exit */
	210
	211	static int __init bochs_init(void)
	212	{
	213	return drm_pci_init(&bochs_driver, &bochs_pci_driver);
	214	}
	215
	216	static void __exit bochs_exit(void)
	217	{
	218	drm_pci_exit(&bochs_driver, &bochs_pci_driver);
	219	}
	220
	221	module_init(bochs_init);
	222	module_exit(bochs_exit);
	223
	224	MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
	225	MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
	226	MODULE_LICENSE("GPL");