[linux-2.6-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 "bochs.h"

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

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

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

static void 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;
}

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,
	.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,
	.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)
{
	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 = 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)
{
	if (vgacon_text_force() && bochs_modeset == -1)
		return -EINVAL;

	if (bochs_modeset == 0)
		return -EINVAL;

	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
1acf5661 MS	15	static int bochs_modeset = -1;
	16	module_param_named(modeset, bochs_modeset, int, 0444);
	17	MODULE_PARM_DESC(modeset, "enable/disable kernel modesetting");
	18
0a6659bd GH	19	static bool enable_fbdev = true;
	20	module_param_named(fbdev, enable_fbdev, bool, 0444);
	21	MODULE_PARM_DESC(fbdev, "register fbdev device");
	22
	23	/* ---------------------------------------------------------------------- */
	24	/* drm interface */
	25
11b3c20b	26	static void bochs_unload(struct drm_device *dev)
0a6659bd GH	27	{
	28	struct bochs_device *bochs = dev->dev_private;
	29
	30	bochs_fbdev_fini(bochs);
	31	bochs_kms_fini(bochs);
	32	bochs_mm_fini(bochs);
	33	bochs_hw_fini(dev);
	34	kfree(bochs);
	35	dev->dev_private = NULL;
0a6659bd GH	36	}
	37
	38	static int bochs_load(struct drm_device *dev, unsigned long flags)
	39	{
	40	struct bochs_device *bochs;
	41	int ret;
	42
	43	bochs = kzalloc(sizeof(*bochs), GFP_KERNEL);
	44	if (bochs == NULL)
	45	return -ENOMEM;
	46	dev->dev_private = bochs;
	47	bochs->dev = dev;
	48
	49	ret = bochs_hw_init(dev, flags);
	50	if (ret)
	51	goto err;
	52
	53	ret = bochs_mm_init(bochs);
	54	if (ret)
	55	goto err;
	56
	57	ret = bochs_kms_init(bochs);
	58	if (ret)
	59	goto err;
	60
	61	if (enable_fbdev)
	62	bochs_fbdev_init(bochs);
	63
	64	return 0;
	65
	66	err:
	67	bochs_unload(dev);
	68	return ret;
	69	}
	70
	71	static const struct file_operations bochs_fops = {
	72	.owner = THIS_MODULE,
	73	.open = drm_open,
	74	.release = drm_release,
	75	.unlocked_ioctl = drm_ioctl,
0a6659bd	76	.compat_ioctl = drm_compat_ioctl,
0a6659bd GH	77	.poll = drm_poll,
	78	.read = drm_read,
	79	.llseek = no_llseek,
	80	.mmap = bochs_mmap,
	81	};
	82
	83	static struct drm_driver bochs_driver = {
	84	.driver_features = DRIVER_GEM \| DRIVER_MODESET,
	85	.load = bochs_load,
	86	.unload = bochs_unload,
915b4d11	87	.set_busid = drm_pci_set_busid,
0a6659bd GH	88	.fops = &bochs_fops,
	89	.name = "bochs-drm",
	90	.desc = "bochs dispi vga interface (qemu stdvga)",
	91	.date = "20130925",
	92	.major = 1,
	93	.minor = 0,
6f2c1c15	94	.gem_free_object_unlocked = bochs_gem_free_object,
0a6659bd GH	95	.dumb_create = bochs_dumb_create,
	96	.dumb_map_offset = bochs_dumb_mmap_offset,
	97	.dumb_destroy = drm_gem_dumb_destroy,
	98	};
	99
b8ccd70f GH	100	/* ---------------------------------------------------------------------- */
	101	/* pm interface */
	102
150cee9c	103	#ifdef CONFIG_PM_SLEEP
b8ccd70f GH	104	static int bochs_pm_suspend(struct device *dev)
	105	{
	106	struct pci_dev *pdev = to_pci_dev(dev);
	107	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	108	struct bochs_device *bochs = drm_dev->dev_private;
	109
	110	drm_kms_helper_poll_disable(drm_dev);
	111
	112	if (bochs->fb.initialized) {
	113	console_lock();
6a752972	114	drm_fb_helper_set_suspend(&bochs->fb.helper, 1);
b8ccd70f GH	115	console_unlock();
	116	}
	117
	118	return 0;
	119	}
	120
	121	static int bochs_pm_resume(struct device *dev)
	122	{
	123	struct pci_dev *pdev = to_pci_dev(dev);
	124	struct drm_device *drm_dev = pci_get_drvdata(pdev);
	125	struct bochs_device *bochs = drm_dev->dev_private;
	126
	127	drm_helper_resume_force_mode(drm_dev);
	128
	129	if (bochs->fb.initialized) {
	130	console_lock();
6a752972	131	drm_fb_helper_set_suspend(&bochs->fb.helper, 0);
b8ccd70f GH	132	console_unlock();
	133	}
	134
	135	drm_kms_helper_poll_enable(drm_dev);
	136	return 0;
	137	}
150cee9c	138	#endif
b8ccd70f GH	139
	140	static const struct dev_pm_ops bochs_pm_ops = {
	141	SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
	142	bochs_pm_resume)
	143	};
	144
0a6659bd GH	145	/* ---------------------------------------------------------------------- */
	146	/* pci interface */
	147
	148	static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
	149	{
	150	struct apertures_struct *ap;
	151
	152	ap = alloc_apertures(1);
	153	if (!ap)
	154	return -ENOMEM;
	155
	156	ap->ranges[0].base = pci_resource_start(pdev, 0);
	157	ap->ranges[0].size = pci_resource_len(pdev, 0);
44adece5	158	drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
0a6659bd GH	159	kfree(ap);
	160
	161	return 0;
	162	}
	163
	164	static int bochs_pci_probe(struct pci_dev *pdev,
	165	const struct pci_device_id *ent)
	166	{
de595762	167	unsigned long fbsize;
0a6659bd GH	168	int ret;
0a6659bd GH	169
de595762 GH	170	fbsize = pci_resource_len(pdev, 0);
	171	if (fbsize < 4 * 1024 * 1024) {
	172	DRM_ERROR("less than 4 MB video memory, ignoring device\n");
	173	return -ENOMEM;
	174	}
	175
0a6659bd GH	176	ret = bochs_kick_out_firmware_fb(pdev);
	177	if (ret)
	178	return ret;
	179
	180	return drm_get_pci_dev(pdev, ent, &bochs_driver);
	181	}
	182
	183	static void bochs_pci_remove(struct pci_dev *pdev)
	184	{
	185	struct drm_device *dev = pci_get_drvdata(pdev);
	186
	187	drm_put_dev(dev);
	188	}
	189
9baa3c34	190	static const struct pci_device_id bochs_pci_tbl[] = {
0a6659bd GH	191	{
	192	.vendor = 0x1234,
	193	.device = 0x1111,
caf02abf RJ	194	.subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
caf02abf RJ	195	.subdevice = PCI_SUBDEVICE_ID_QEMU,
0a6659bd GH	196	.driver_data = BOCHS_QEMU_STDVGA,
	197	},
	198	{
	199	.vendor = 0x1234,
	200	.device = 0x1111,
	201	.subvendor = PCI_ANY_ID,
	202	.subdevice = PCI_ANY_ID,
	203	.driver_data = BOCHS_UNKNOWN,
	204	},
	205	{ /* end of list */ }
	206	};
	207
	208	static struct pci_driver bochs_pci_driver = {
	209	.name = "bochs-drm",
	210	.id_table = bochs_pci_tbl,
	211	.probe = bochs_pci_probe,
	212	.remove = bochs_pci_remove,
b8ccd70f	213	.driver.pm = &bochs_pm_ops,
0a6659bd GH	214	};
	215
	216	/* ---------------------------------------------------------------------- */
	217	/* module init/exit */
	218
	219	static int __init bochs_init(void)
	220	{
1acf5661 MS	221	if (vgacon_text_force() && bochs_modeset == -1)
	222	return -EINVAL;
	223
	224	if (bochs_modeset == 0)
	225	return -EINVAL;
	226
0a6659bd GH	227	return drm_pci_init(&bochs_driver, &bochs_pci_driver);
	228	}
	229
	230	static void __exit bochs_exit(void)
	231	{
	232	drm_pci_exit(&bochs_driver, &bochs_pci_driver);
	233	}
	234
	235	module_init(bochs_init);
	236	module_exit(bochs_exit);
	237
	238	MODULE_DEVICE_TABLE(pci, bochs_pci_tbl);
	239	MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
	240	MODULE_LICENSE("GPL");