[net-next-2.6.git] / drivers / gpu / drm / drm_stub.c

/**
 * \file drm_stub.h
 * Stub support
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 */

/*
 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
 *
 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
 * 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
 * PRECISION INSIGHT 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/moduleparam.h>
#include "drmP.h"
#include "drm_core.h"

unsigned int drm_debug = 0;	/* 1 to enable debug output */
EXPORT_SYMBOL(drm_debug);

MODULE_AUTHOR(CORE_AUTHOR);
MODULE_DESCRIPTION(CORE_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_PARM_DESC(debug, "Enable debug output");

module_param_named(debug, drm_debug, int, 0600);

struct idr drm_minors_idr;

struct class *drm_class;
struct proc_dir_entry *drm_proc_root;

static int drm_minor_get_id(struct drm_device *dev, int type)
{
	int new_id;
	int ret;
	int base = 0, limit = 63;

	if (type == DRM_MINOR_CONTROL) {
                base += 64;
                limit = base + 127;
        } else if (type == DRM_MINOR_RENDER) {
                base += 128;
                limit = base + 255;
        }

again:
	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
		DRM_ERROR("Out of memory expanding drawable idr\n");
		return -ENOMEM;
	}
	mutex_lock(&dev->struct_mutex);
	ret = idr_get_new_above(&drm_minors_idr, NULL,
				base, &new_id);
	mutex_unlock(&dev->struct_mutex);
	if (ret == -EAGAIN) {
		goto again;
	} else if (ret) {
		return ret;
	}

	if (new_id >= limit) {
		idr_remove(&drm_minors_idr, new_id);
		return -EINVAL;
	}
	return new_id;
}

struct drm_master *drm_master_create(struct drm_minor *minor)
{
	struct drm_master *master;

	master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
	if (!master)
		return NULL;

	kref_init(&master->refcount);
	spin_lock_init(&master->lock.spinlock);
	init_waitqueue_head(&master->lock.lock_queue);
	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	INIT_LIST_HEAD(&master->magicfree);
	master->minor = minor;

	list_add_tail(&master->head, &minor->master_list);

	return master;
}

struct drm_master *drm_master_get(struct drm_master *master)
{
	kref_get(&master->refcount);
	return master;
}

static void drm_master_destroy(struct kref *kref)
{
	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	struct drm_magic_entry *pt, *next;
	struct drm_device *dev = master->minor->dev;
	struct drm_map_list *r_list, *list_temp;

	list_del(&master->head);

	if (dev->driver->master_destroy)
		dev->driver->master_destroy(dev, master);

	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
		if (r_list->master == master) {
			drm_rmmap_locked(dev, r_list->map);
			r_list = NULL;
		}
	}

	if (master->unique) {
		drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
		master->unique = NULL;
		master->unique_len = 0;
	}

	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
		list_del(&pt->head);
		drm_ht_remove_item(&master->magiclist, &pt->hash_item);
		drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
	}

	drm_ht_remove(&master->magiclist);

	if (master->lock.hw_lock) {
		if (dev->sigdata.lock == master->lock.hw_lock)
			dev->sigdata.lock = NULL;
		master->lock.hw_lock = NULL;
		master->lock.file_priv = NULL;
		wake_up_interruptible(&master->lock.lock_queue);
	}

	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
}

void drm_master_put(struct drm_master **master)
{
	kref_put(&(*master)->refcount, drm_master_destroy);
	*master = NULL;
}

int drm_setmaster_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
		return -EINVAL;

	if (!file_priv->master)
		return -EINVAL;

	if (!file_priv->minor->master &&
	    file_priv->minor->master != file_priv->master) {
		mutex_lock(&dev->struct_mutex);
		file_priv->minor->master = drm_master_get(file_priv->master);
		mutex_lock(&dev->struct_mutex);
	}

	return 0;
}

int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	if (!file_priv->master)
		return -EINVAL;
	mutex_lock(&dev->struct_mutex);
	drm_master_put(&file_priv->minor->master);
	mutex_unlock(&dev->struct_mutex);
	return 0;
}

static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver)
{
	int retcode;

	INIT_LIST_HEAD(&dev->filelist);
	INIT_LIST_HEAD(&dev->ctxlist);
	INIT_LIST_HEAD(&dev->vmalist);
	INIT_LIST_HEAD(&dev->maplist);

	spin_lock_init(&dev->count_lock);
	spin_lock_init(&dev->drw_lock);
	init_timer(&dev->timer);
	mutex_init(&dev->struct_mutex);
	mutex_init(&dev->ctxlist_mutex);

	idr_init(&dev->drw_idr);

	dev->pdev = pdev;
	dev->pci_device = pdev->device;
	dev->pci_vendor = pdev->vendor;

#ifdef __alpha__
	dev->hose = pdev->sysdata;
#endif

	if (drm_ht_create(&dev->map_hash, 12)) {
		return -ENOMEM;
	}

	/* the DRM has 6 basic counters */
	dev->counters = 6;
	dev->types[0] = _DRM_STAT_LOCK;
	dev->types[1] = _DRM_STAT_OPENS;
	dev->types[2] = _DRM_STAT_CLOSES;
	dev->types[3] = _DRM_STAT_IOCTLS;
	dev->types[4] = _DRM_STAT_LOCKS;
	dev->types[5] = _DRM_STAT_UNLOCKS;

	dev->driver = driver;

	if (drm_core_has_AGP(dev)) {
		if (drm_device_is_agp(dev))
			dev->agp = drm_agp_init(dev);
		if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
		    && (dev->agp == NULL)) {
			DRM_ERROR("Cannot initialize the agpgart module.\n");
			retcode = -EINVAL;
			goto error_out_unreg;
		}
		if (drm_core_has_MTRR(dev)) {
			if (dev->agp)
				dev->agp->agp_mtrr =
				    mtrr_add(dev->agp->agp_info.aper_base,
					     dev->agp->agp_info.aper_size *
					     1024 * 1024, MTRR_TYPE_WRCOMB, 1);
		}
	}


	retcode = drm_ctxbitmap_init(dev);
	if (retcode) {
		DRM_ERROR("Cannot allocate memory for context bitmap.\n");
		goto error_out_unreg;
	}

	if (driver->driver_features & DRIVER_GEM) {
		retcode = drm_gem_init(dev);
		if (retcode) {
			DRM_ERROR("Cannot initialize graphics execution "
				  "manager (GEM)\n");
			goto error_out_unreg;
		}
	}

	return 0;

      error_out_unreg:
	drm_lastclose(dev);
	return retcode;
}


/**
 * Get a secondary minor number.
 *
 * \param dev device data structure
 * \param sec-minor structure to hold the assigned minor
 * \return negative number on failure.
 *
 * Search an empty entry and initialize it to the given parameters, and
 * create the proc init entry via proc_init(). This routines assigns
 * minor numbers to secondary heads of multi-headed cards
 */
static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
{
	struct drm_minor *new_minor;
	int ret;
	int minor_id;

	DRM_DEBUG("\n");

	minor_id = drm_minor_get_id(dev, type);
	if (minor_id < 0)
		return minor_id;

	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	if (!new_minor) {
		ret = -ENOMEM;
		goto err_idr;
	}

	new_minor->type = type;
	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	new_minor->dev = dev;
	new_minor->index = minor_id;
	INIT_LIST_HEAD(&new_minor->master_list);

	idr_replace(&drm_minors_idr, new_minor, minor_id);

	if (type == DRM_MINOR_LEGACY) {
		ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
		if (ret) {
			DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
			goto err_mem;
		}
	} else
		new_minor->dev_root = NULL;

	ret = drm_sysfs_device_add(new_minor);
	if (ret) {
		printk(KERN_ERR
		       "DRM: Error sysfs_device_add.\n");
		goto err_g2;
	}
	*minor = new_minor;

	DRM_DEBUG("new minor assigned %d\n", minor_id);
	return 0;


err_g2:
	if (new_minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(new_minor, drm_proc_root);
err_mem:
	kfree(new_minor);
err_idr:
	idr_remove(&drm_minors_idr, minor_id);
	*minor = NULL;
	return ret;
}

/**
 * Register.
 *
 * \param pdev - PCI device structure
 * \param ent entry from the PCI ID table with device type flags
 * \return zero on success or a negative number on failure.
 *
 * Attempt to gets inter module "drm" information. If we are first
 * then register the character device and inter module information.
 * Try and register, if we fail to register, backout previous work.
 */
int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
		struct drm_driver *driver)
{
	struct drm_device *dev;
	int ret;

	DRM_DEBUG("\n");

	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	if (!dev)
		return -ENOMEM;

	ret = pci_enable_device(pdev);
	if (ret)
		goto err_g1;

	pci_set_master(pdev);
	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
		goto err_g2;
	}

	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
		if (ret)
			goto err_g2;
	}

	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
		goto err_g3;

	if (dev->driver->load) {
		ret = dev->driver->load(dev, ent->driver_data);
		if (ret)
			goto err_g3;
	}

        /* setup the grouping for the legacy output */
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
		if (ret)
			goto err_g3;
	}

	list_add_tail(&dev->driver_item, &driver->device_list);

	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
		 driver->name, driver->major, driver->minor, driver->patchlevel,
		 driver->date, dev->primary->index);

	return 0;

err_g3:
	drm_put_minor(&dev->primary);
err_g2:
	pci_disable_device(pdev);
err_g1:
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	return ret;
}

/**
 * Put a device minor number.
 *
 * \param dev device data structure
 * \return always zero
 *
 * Cleans up the proc resources. If it is the last minor then release the foreign
 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
 * unregisters the character device.
 */
int drm_put_dev(struct drm_device * dev)
{
	DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);

	if (dev->devname) {
		drm_free(dev->devname, strlen(dev->devname) + 1,
			 DRM_MEM_DRIVER);
		dev->devname = NULL;
	}
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	return 0;
}

/**
 * Put a secondary minor number.
 *
 * \param sec_minor - structure to be released
 * \return always zero
 *
 * Cleans up the proc resources. Not legal for this to be the
 * last minor released.
 *
 */
int drm_put_minor(struct drm_minor **minor_p)
{
	struct drm_minor *minor = *minor_p;

	DRM_DEBUG("release secondary minor %d\n", minor->index);

	if (minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(minor, drm_proc_root);
	drm_sysfs_device_remove(minor);

	idr_remove(&drm_minors_idr, minor->index);

	kfree(minor);
	*minor_p = NULL;
	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/**
	2	* \file drm_stub.h
	3	* Stub support
	4	*
	5	* \author Rickard E. (Rik) Faith <faith@valinux.com>
	6	*/
	7
	8	/*
	9	* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
	10	*
	11	* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
	12	* All Rights Reserved.
	13	*
	14	* Permission is hereby granted, free of charge, to any person obtaining a
	15	* copy of this software and associated documentation files (the "Software"),
	16	* to deal in the Software without restriction, including without limitation
	17	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	18	* and/or sell copies of the Software, and to permit persons to whom the
	19	* Software is furnished to do so, subject to the following conditions:
	20	*
	21	* The above copyright notice and this permission notice (including the next
	22	* paragraph) shall be included in all copies or substantial portions of the
	23	* Software.
	24	*
	25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	26	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	27	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	28	* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	29	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	30	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	31	* DEALINGS IN THE SOFTWARE.
	32	*/
	33
	34	#include <linux/module.h>
	35	#include <linux/moduleparam.h>
	36	#include "drmP.h"
	37	#include "drm_core.h"
	38
b5e89ed5	39	unsigned int drm_debug = 0; /* 1 to enable debug output */
1da177e4 LT	40	EXPORT_SYMBOL(drm_debug);
1da177e4 LT	41
b5e89ed5 DA	42	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	43	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	44	MODULE_LICENSE("GPL and additional rights");
1da177e4 LT	45	MODULE_PARM_DESC(debug, "Enable debug output");
1da177e4 LT	46
c0758146	47	module_param_named(debug, drm_debug, int, 0600);
1da177e4	48
2c14f28b DA	49	struct idr drm_minors_idr;
2c14f28b DA	50
0650fd58	51	struct class *drm_class;
1da177e4 LT	52	struct proc_dir_entry *drm_proc_root;
1da177e4 LT	53
2c14f28b DA	54	static int drm_minor_get_id(struct drm_device *dev, int type)
	55	{
	56	int new_id;
	57	int ret;
	58	int base = 0, limit = 63;
	59
f453ba04 DA	60	if (type == DRM_MINOR_CONTROL) {
	61	base += 64;
	62	limit = base + 127;
	63	} else if (type == DRM_MINOR_RENDER) {
	64	base += 128;
	65	limit = base + 255;
	66	}
	67
2c14f28b DA	68	again:
	69	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	70	DRM_ERROR("Out of memory expanding drawable idr\n");
	71	return -ENOMEM;
	72	}
	73	mutex_lock(&dev->struct_mutex);
	74	ret = idr_get_new_above(&drm_minors_idr, NULL,
	75	base, &new_id);
	76	mutex_unlock(&dev->struct_mutex);
	77	if (ret == -EAGAIN) {
	78	goto again;
	79	} else if (ret) {
	80	return ret;
	81	}
	82
	83	if (new_id >= limit) {
	84	idr_remove(&drm_minors_idr, new_id);
	85	return -EINVAL;
	86	}
	87	return new_id;
	88	}
	89
7c1c2871 DA	90	struct drm_master drm_master_create(struct drm_minor minor)
	91	{
	92	struct drm_master *master;
	93
	94	master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
	95	if (!master)
	96	return NULL;
	97
	98	kref_init(&master->refcount);
	99	spin_lock_init(&master->lock.spinlock);
	100	init_waitqueue_head(&master->lock.lock_queue);
	101	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	102	INIT_LIST_HEAD(&master->magicfree);
	103	master->minor = minor;
	104
	105	list_add_tail(&master->head, &minor->master_list);
	106
	107	return master;
	108	}
	109
	110	struct drm_master drm_master_get(struct drm_master master)
	111	{
	112	kref_get(&master->refcount);
	113	return master;
	114	}
	115
	116	static void drm_master_destroy(struct kref *kref)
	117	{
	118	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	119	struct drm_magic_entry pt, next;
	120	struct drm_device *dev = master->minor->dev;
c1ff85d9	121	struct drm_map_list r_list, list_temp;
7c1c2871 DA	122
	123	list_del(&master->head);
	124
	125	if (dev->driver->master_destroy)
	126	dev->driver->master_destroy(dev, master);
	127
c1ff85d9 DA	128	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	129	if (r_list->master == master) {
	130	drm_rmmap_locked(dev, r_list->map);
	131	r_list = NULL;
	132	}
	133	}
	134
7c1c2871	135	if (master->unique) {
1147c9cd	136	drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
7c1c2871 DA	137	master->unique = NULL;
	138	master->unique_len = 0;
	139	}
	140
	141	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	142	list_del(&pt->head);
	143	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
	144	drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
	145	}
	146
	147	drm_ht_remove(&master->magiclist);
	148
	149	if (master->lock.hw_lock) {
	150	if (dev->sigdata.lock == master->lock.hw_lock)
	151	dev->sigdata.lock = NULL;
	152	master->lock.hw_lock = NULL;
	153	master->lock.file_priv = NULL;
	154	wake_up_interruptible(&master->lock.lock_queue);
	155	}
	156
	157	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
	158	}
	159
	160	void drm_master_put(struct drm_master **master)
	161	{
	162	kref_put(&(*master)->refcount, drm_master_destroy);
	163	*master = NULL;
	164	}
	165
	166	int drm_setmaster_ioctl(struct drm_device dev, void data,
	167	struct drm_file *file_priv)
	168	{
	169	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	170	return -EINVAL;
	171
	172	if (!file_priv->master)
	173	return -EINVAL;
	174
	175	if (!file_priv->minor->master &&
	176	file_priv->minor->master != file_priv->master) {
	177	mutex_lock(&dev->struct_mutex);
	178	file_priv->minor->master = drm_master_get(file_priv->master);
	179	mutex_lock(&dev->struct_mutex);
	180	}
	181
	182	return 0;
	183	}
	184
	185	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	186	struct drm_file *file_priv)
	187	{
	188	if (!file_priv->master)
	189	return -EINVAL;
	190	mutex_lock(&dev->struct_mutex);
	191	drm_master_put(&file_priv->minor->master);
	192	mutex_unlock(&dev->struct_mutex);
	193	return 0;
	194	}
	195
84b1fd10	196	static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
b5e89ed5 DA	197	const struct pci_device_id *ent,
b5e89ed5 DA	198	struct drm_driver *driver)
1da177e4 LT	199	{
	200	int retcode;
	201
bd1b331f	202	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	203	INIT_LIST_HEAD(&dev->ctxlist);
	204	INIT_LIST_HEAD(&dev->vmalist);
	205	INIT_LIST_HEAD(&dev->maplist);
	206
1da177e4	207	spin_lock_init(&dev->count_lock);
bea5679f	208	spin_lock_init(&dev->drw_lock);
b5e89ed5	209	init_timer(&dev->timer);
30e2fb18 DA	210	mutex_init(&dev->struct_mutex);
30e2fb18 DA	211	mutex_init(&dev->ctxlist_mutex);
1da177e4	212
45ea5dcd DA	213	idr_init(&dev->drw_idr);
45ea5dcd DA	214
b5e89ed5	215	dev->pdev = pdev;
2f02cc3f EA	216	dev->pci_device = pdev->device;
2f02cc3f EA	217	dev->pci_vendor = pdev->vendor;
1da177e4 LT	218
1da177e4 LT	219	#ifdef __alpha__
b5e89ed5	220	dev->hose = pdev->sysdata;
1da177e4	221	#endif
1da177e4	222
8d153f71	223	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	224	return -ENOMEM;
8d153f71 TH	225	}
836cf046	226
1da177e4 LT	227	/* the DRM has 6 basic counters */
1da177e4 LT	228	dev->counters = 6;
b5e89ed5 DA	229	dev->types[0] = _DRM_STAT_LOCK;
	230	dev->types[1] = _DRM_STAT_OPENS;
	231	dev->types[2] = _DRM_STAT_CLOSES;
	232	dev->types[3] = _DRM_STAT_IOCTLS;
	233	dev->types[4] = _DRM_STAT_LOCKS;
	234	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	235
1da177e4 LT	236	dev->driver = driver;
b5e89ed5	237
1da177e4	238	if (drm_core_has_AGP(dev)) {
cda17380 DA	239	if (drm_device_is_agp(dev))
cda17380 DA	240	dev->agp = drm_agp_init(dev);
b5e89ed5 DA	241	if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
	242	&& (dev->agp == NULL)) {
	243	DRM_ERROR("Cannot initialize the agpgart module.\n");
1da177e4 LT	244	retcode = -EINVAL;
	245	goto error_out_unreg;
	246	}
	247	if (drm_core_has_MTRR(dev)) {
	248	if (dev->agp)
b5e89ed5 DA	249	dev->agp->agp_mtrr =
	250	mtrr_add(dev->agp->agp_info.aper_base,
	251	dev->agp->agp_info.aper_size *
	252	1024 * 1024, MTRR_TYPE_WRCOMB, 1);
1da177e4 LT	253	}
	254	}
	255
2716a02f	256
b5e89ed5 DA	257	retcode = drm_ctxbitmap_init(dev);
	258	if (retcode) {
	259	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	260	goto error_out_unreg;
	261	}
	262
673a394b EA	263	if (driver->driver_features & DRIVER_GEM) {
	264	retcode = drm_gem_init(dev);
	265	if (retcode) {
	266	DRM_ERROR("Cannot initialize graphics execution "
	267	"manager (GEM)\n");
	268	goto error_out_unreg;
	269	}
	270	}
	271
1da177e4	272	return 0;
b5e89ed5 DA	273
b5e89ed5 DA	274	error_out_unreg:
22eae947	275	drm_lastclose(dev);
1da177e4 LT	276	return retcode;
	277	}
	278
1da177e4	279
1da177e4 LT	280	/**
	281	* Get a secondary minor number.
	282	*
	283	* \param dev device data structure
	284	* \param sec-minor structure to hold the assigned minor
	285	* \return negative number on failure.
	286	*
	287	* Search an empty entry and initialize it to the given parameters, and
	288	* create the proc init entry via proc_init(). This routines assigns
	289	* minor numbers to secondary heads of multi-headed cards
	290	*/
2c14f28b	291	static int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	292	{
2c14f28b	293	struct drm_minor *new_minor;
1da177e4	294	int ret;
2c14f28b	295	int minor_id;
1da177e4 LT	296
	297	DRM_DEBUG("\n");
	298
2c14f28b DA	299	minor_id = drm_minor_get_id(dev, type);
	300	if (minor_id < 0)
	301	return minor_id;
	302
	303	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	304	if (!new_minor) {
	305	ret = -ENOMEM;
	306	goto err_idr;
	307	}
	308
	309	new_minor->type = type;
	310	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	311	new_minor->dev = dev;
	312	new_minor->index = minor_id;
7c1c2871	313	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	314
	315	idr_replace(&drm_minors_idr, new_minor, minor_id);
	316
	317	if (type == DRM_MINOR_LEGACY) {
	318	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	319	if (ret) {
	320	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	321	goto err_mem;
1da177e4	322	}
2c14f28b DA	323	} else
	324	new_minor->dev_root = NULL;
	325
	326	ret = drm_sysfs_device_add(new_minor);
	327	if (ret) {
	328	printk(KERN_ERR
	329	"DRM: Error sysfs_device_add.\n");
	330	goto err_g2;
1da177e4	331	}
2c14f28b DA	332	*minor = new_minor;
	333
	334	DRM_DEBUG("new minor assigned %d\n", minor_id);
	335	return 0;
	336
	337
	338	err_g2:
	339	if (new_minor->type == DRM_MINOR_LEGACY)
	340	drm_proc_cleanup(new_minor, drm_proc_root);
	341	err_mem:
	342	kfree(new_minor);
	343	err_idr:
	344	idr_remove(&drm_minors_idr, minor_id);
	345	*minor = NULL;
1da177e4 LT	346	return ret;
1da177e4 LT	347	}
b5e89ed5	348
c94f7029 DA	349	/**
	350	* Register.
	351	*
	352	* \param pdev - PCI device structure
	353	* \param ent entry from the PCI ID table with device type flags
	354	* \return zero on success or a negative number on failure.
	355	*
	356	* Attempt to gets inter module "drm" information. If we are first
	357	* then register the character device and inter module information.
	358	* Try and register, if we fail to register, backout previous work.
	359	*/
	360	int drm_get_dev(struct pci_dev pdev, const struct pci_device_id ent,
b5e89ed5	361	struct drm_driver *driver)
c94f7029	362	{
84b1fd10	363	struct drm_device *dev;
c94f7029 DA	364	int ret;
	365
	366	DRM_DEBUG("\n");
	367
	368	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	369	if (!dev)
	370	return -ENOMEM;
	371
2c3f0edd JG	372	ret = pci_enable_device(pdev);
	373	if (ret)
	374	goto err_g1;
c94f7029	375
19a8f59a	376	pci_set_master(pdev);
c94f7029 DA	377	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
c94f7029 DA	378	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
2c3f0edd	379	goto err_g2;
c94f7029	380	}
f453ba04 DA	381
	382	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	383	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	384	if (ret)
	385	goto err_g2;
	386	}
	387
2c14f28b	388	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
f453ba04	389	goto err_g3;
bc5f4523	390
f453ba04 DA	391	if (dev->driver->load) {
	392	ret = dev->driver->load(dev, ent->driver_data);
	393	if (ret)
a9d51a5a	394	goto err_g3;
f453ba04 DA	395	}
	396
	397	/* setup the grouping for the legacy output */
	398	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	399	ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
	400	if (ret)
	401	goto err_g3;
	402	}
a9d51a5a	403
e7f7ab45 DA	404	list_add_tail(&dev->driver_item, &driver->device_list);
e7f7ab45 DA	405
22eae947 DA	406	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
22eae947 DA	407	driver->name, driver->major, driver->minor, driver->patchlevel,
2c14f28b	408	driver->date, dev->primary->index);
c94f7029 DA	409
	410	return 0;
	411
a9d51a5a DA	412	err_g3:
a9d51a5a DA	413	drm_put_minor(&dev->primary);
2c3f0edd JG	414	err_g2:
	415	pci_disable_device(pdev);
	416	err_g1:
c94f7029 DA	417	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	418	return ret;
	419	}
b5e89ed5	420
1da177e4 LT	421	/**
	422	* Put a device minor number.
	423	*
	424	* \param dev device data structure
	425	* \return always zero
	426	*
	427	* Cleans up the proc resources. If it is the last minor then release the foreign
	428	* "drm" data, otherwise unregisters the "drm" data, frees the dev list and
	429	* unregisters the character device.
	430	*/
84b1fd10	431	int drm_put_dev(struct drm_device * dev)
1da177e4 LT	432	{
	433	DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
	434
1da177e4 LT	435	if (dev->devname) {
	436	drm_free(dev->devname, strlen(dev->devname) + 1,
	437	DRM_MEM_DRIVER);
	438	dev->devname = NULL;
	439	}
	440	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	441	return 0;
	442	}
	443
	444	/**
	445	* Put a secondary minor number.
	446	*
	447	* \param sec_minor - structure to be released
	448	* \return always zero
	449	*
	450	* Cleans up the proc resources. Not legal for this to be the
	451	* last minor released.
	452	*
	453	*/
2c14f28b	454	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	455	{
2c14f28b	456	struct drm_minor minor = minor_p;
673a394b	457
2c14f28b	458	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	459
2c14f28b DA	460	if (minor->type == DRM_MINOR_LEGACY)
	461	drm_proc_cleanup(minor, drm_proc_root);
	462	drm_sysfs_device_remove(minor);
1da177e4	463
2c14f28b	464	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	465
2c14f28b DA	466	kfree(minor);
2c14f28b DA	467	*minor_p = NULL;
1da177e4 LT	468	return 0;
1da177e4 LT	469	}