[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;
struct dentry *drm_debugfs_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);

	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->is_master)
		return 0;

	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);
		file_priv->is_master = 1;
		mutex_unlock(&dev->struct_mutex);
	}

	return 0;
}

int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
{
	if (!file_priv->is_master)
		return -EINVAL;

	mutex_lock(&dev->struct_mutex);
	drm_master_put(&file_priv->minor->master);
	file_priv->is_master = 0;
	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->proc_root = NULL;

#if defined(CONFIG_DEBUG_FS)
	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	if (ret) {
		DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n");
		goto err_g2;
	}
#endif

	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)) {
		pci_set_drvdata(pdev, dev);
		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 for %s on minor %d\n",
		 driver->name, driver->major, driver->minor, driver->patchlevel,
		 driver->date, pci_name(pdev), 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;
}
EXPORT_SYMBOL(drm_get_dev);

/**
 * 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);
#if defined(CONFIG_DEBUG_FS)
	drm_debugfs_cleanup(minor);
#endif

	drm_sysfs_device_remove(minor);

	idr_remove(&drm_minors_idr, minor->index);

	kfree(minor);
	*minor_p = NULL;
	return 0;
}

/**
 * Called via drm_exit() at module unload time or when pci device is
 * unplugged.
 *
 * Cleans up all DRM device, calling drm_lastclose().
 *
 * \sa drm_init
 */
void drm_put_dev(struct drm_device *dev)
{
	struct drm_driver *driver = dev->driver;
	struct drm_map_list *r_list, *list_temp;

	DRM_DEBUG("\n");

	if (!dev) {
		DRM_ERROR("cleanup called no dev\n");
		return;
	}

	drm_vblank_cleanup(dev);

	drm_lastclose(dev);

	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	    dev->agp && dev->agp->agp_mtrr >= 0) {
		int retval;
		retval = mtrr_del(dev->agp->agp_mtrr,
				  dev->agp->agp_info.aper_base,
				  dev->agp->agp_info.aper_size * 1024 * 1024);
		DRM_DEBUG("mtrr_del=%d\n", retval);
	}

	if (dev->driver->unload)
		dev->driver->unload(dev);

	if (drm_core_has_AGP(dev) && dev->agp) {
		drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
		dev->agp = NULL;
	}

	drm_ht_remove(&dev->map_hash);
	drm_ctxbitmap_cleanup(dev);

	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
		drm_rmmap(dev, r_list->map);

	if (drm_core_check_feature(dev, DRIVER_MODESET))
		drm_put_minor(&dev->control);

	if (driver->driver_features & DRIVER_GEM)
		drm_gem_destroy(dev);

	drm_put_minor(&dev->primary);

	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);
}
EXPORT_SYMBOL(drm_put_dev);
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	52	struct proc_dir_entry *drm_proc_root;
955b12de	53	struct dentry *drm_debugfs_root;
1da177e4	54
2c14f28b DA	55	static int drm_minor_get_id(struct drm_device *dev, int type)
	56	{
	57	int new_id;
	58	int ret;
	59	int base = 0, limit = 63;
	60
f453ba04 DA	61	if (type == DRM_MINOR_CONTROL) {
	62	base += 64;
	63	limit = base + 127;
	64	} else if (type == DRM_MINOR_RENDER) {
	65	base += 128;
	66	limit = base + 255;
	67	}
	68
2c14f28b DA	69	again:
	70	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	71	DRM_ERROR("Out of memory expanding drawable idr\n");
	72	return -ENOMEM;
	73	}
	74	mutex_lock(&dev->struct_mutex);
	75	ret = idr_get_new_above(&drm_minors_idr, NULL,
	76	base, &new_id);
	77	mutex_unlock(&dev->struct_mutex);
	78	if (ret == -EAGAIN) {
	79	goto again;
	80	} else if (ret) {
	81	return ret;
	82	}
	83
	84	if (new_id >= limit) {
	85	idr_remove(&drm_minors_idr, new_id);
	86	return -EINVAL;
	87	}
	88	return new_id;
	89	}
	90
7c1c2871 DA	91	struct drm_master drm_master_create(struct drm_minor minor)
	92	{
	93	struct drm_master *master;
	94
	95	master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
	96	if (!master)
	97	return NULL;
	98
	99	kref_init(&master->refcount);
	100	spin_lock_init(&master->lock.spinlock);
	101	init_waitqueue_head(&master->lock.lock_queue);
	102	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	103	INIT_LIST_HEAD(&master->magicfree);
	104	master->minor = minor;
	105
	106	list_add_tail(&master->head, &minor->master_list);
	107
	108	return master;
	109	}
	110
	111	struct drm_master drm_master_get(struct drm_master master)
	112	{
	113	kref_get(&master->refcount);
	114	return master;
	115	}
	116
	117	static void drm_master_destroy(struct kref *kref)
	118	{
	119	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	120	struct drm_magic_entry pt, next;
	121	struct drm_device *dev = master->minor->dev;
c1ff85d9	122	struct drm_map_list r_list, list_temp;
7c1c2871 DA	123
	124	list_del(&master->head);
	125
	126	if (dev->driver->master_destroy)
	127	dev->driver->master_destroy(dev, master);
	128
c1ff85d9 DA	129	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	130	if (r_list->master == master) {
	131	drm_rmmap_locked(dev, r_list->map);
	132	r_list = NULL;
	133	}
	134	}
	135
7c1c2871	136	if (master->unique) {
1147c9cd	137	drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
7c1c2871 DA	138	master->unique = NULL;
	139	master->unique_len = 0;
	140	}
	141
	142	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	143	list_del(&pt->head);
	144	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
	145	drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
	146	}
	147
	148	drm_ht_remove(&master->magiclist);
	149
7c1c2871 DA	150	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
	151	}
	152
	153	void drm_master_put(struct drm_master **master)
	154	{
	155	kref_put(&(*master)->refcount, drm_master_destroy);
	156	*master = NULL;
	157	}
	158
	159	int drm_setmaster_ioctl(struct drm_device dev, void data,
	160	struct drm_file *file_priv)
	161	{
6b008426 JB	162	if (file_priv->is_master)
	163	return 0;
	164
7c1c2871 DA	165	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	166	return -EINVAL;
	167
	168	if (!file_priv->master)
	169	return -EINVAL;
	170
	171	if (!file_priv->minor->master &&
	172	file_priv->minor->master != file_priv->master) {
	173	mutex_lock(&dev->struct_mutex);
	174	file_priv->minor->master = drm_master_get(file_priv->master);
6b008426	175	file_priv->is_master = 1;
5ad8b7d1	176	mutex_unlock(&dev->struct_mutex);
7c1c2871 DA	177	}
	178
	179	return 0;
	180	}
	181
	182	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	183	struct drm_file *file_priv)
	184	{
6b008426	185	if (!file_priv->is_master)
7c1c2871	186	return -EINVAL;
6b008426	187
7c1c2871 DA	188	mutex_lock(&dev->struct_mutex);
7c1c2871 DA	189	drm_master_put(&file_priv->minor->master);
6b008426	190	file_priv->is_master = 0;
7c1c2871 DA	191	mutex_unlock(&dev->struct_mutex);
	192	return 0;
	193	}
	194
84b1fd10	195	static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
b5e89ed5 DA	196	const struct pci_device_id *ent,
b5e89ed5 DA	197	struct drm_driver *driver)
1da177e4 LT	198	{
	199	int retcode;
	200
bd1b331f	201	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	202	INIT_LIST_HEAD(&dev->ctxlist);
	203	INIT_LIST_HEAD(&dev->vmalist);
	204	INIT_LIST_HEAD(&dev->maplist);
	205
1da177e4	206	spin_lock_init(&dev->count_lock);
bea5679f	207	spin_lock_init(&dev->drw_lock);
b5e89ed5	208	init_timer(&dev->timer);
30e2fb18 DA	209	mutex_init(&dev->struct_mutex);
30e2fb18 DA	210	mutex_init(&dev->ctxlist_mutex);
1da177e4	211
45ea5dcd DA	212	idr_init(&dev->drw_idr);
45ea5dcd DA	213
b5e89ed5	214	dev->pdev = pdev;
2f02cc3f EA	215	dev->pci_device = pdev->device;
2f02cc3f EA	216	dev->pci_vendor = pdev->vendor;
1da177e4 LT	217
1da177e4 LT	218	#ifdef __alpha__
b5e89ed5	219	dev->hose = pdev->sysdata;
1da177e4	220	#endif
1da177e4	221
8d153f71	222	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	223	return -ENOMEM;
8d153f71 TH	224	}
836cf046	225
1da177e4 LT	226	/* the DRM has 6 basic counters */
1da177e4 LT	227	dev->counters = 6;
b5e89ed5 DA	228	dev->types[0] = _DRM_STAT_LOCK;
	229	dev->types[1] = _DRM_STAT_OPENS;
	230	dev->types[2] = _DRM_STAT_CLOSES;
	231	dev->types[3] = _DRM_STAT_IOCTLS;
	232	dev->types[4] = _DRM_STAT_LOCKS;
	233	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	234
1da177e4 LT	235	dev->driver = driver;
b5e89ed5	236
1da177e4	237	if (drm_core_has_AGP(dev)) {
cda17380 DA	238	if (drm_device_is_agp(dev))
cda17380 DA	239	dev->agp = drm_agp_init(dev);
b5e89ed5 DA	240	if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
	241	&& (dev->agp == NULL)) {
	242	DRM_ERROR("Cannot initialize the agpgart module.\n");
1da177e4 LT	243	retcode = -EINVAL;
	244	goto error_out_unreg;
	245	}
	246	if (drm_core_has_MTRR(dev)) {
	247	if (dev->agp)
b5e89ed5 DA	248	dev->agp->agp_mtrr =
	249	mtrr_add(dev->agp->agp_info.aper_base,
	250	dev->agp->agp_info.aper_size *
	251	1024 * 1024, MTRR_TYPE_WRCOMB, 1);
1da177e4 LT	252	}
	253	}
	254
2716a02f	255
b5e89ed5 DA	256	retcode = drm_ctxbitmap_init(dev);
	257	if (retcode) {
	258	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	259	goto error_out_unreg;
	260	}
	261
673a394b EA	262	if (driver->driver_features & DRIVER_GEM) {
	263	retcode = drm_gem_init(dev);
	264	if (retcode) {
	265	DRM_ERROR("Cannot initialize graphics execution "
	266	"manager (GEM)\n");
	267	goto error_out_unreg;
	268	}
	269	}
	270
1da177e4	271	return 0;
b5e89ed5 DA	272
b5e89ed5 DA	273	error_out_unreg:
22eae947	274	drm_lastclose(dev);
1da177e4 LT	275	return retcode;
	276	}
	277
1da177e4	278
1da177e4 LT	279	/**
	280	* Get a secondary minor number.
	281	*
	282	* \param dev device data structure
	283	* \param sec-minor structure to hold the assigned minor
	284	* \return negative number on failure.
	285	*
	286	* Search an empty entry and initialize it to the given parameters, and
	287	* create the proc init entry via proc_init(). This routines assigns
	288	* minor numbers to secondary heads of multi-headed cards
	289	*/
2c14f28b	290	static int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	291	{
2c14f28b	292	struct drm_minor *new_minor;
1da177e4	293	int ret;
2c14f28b	294	int minor_id;
1da177e4 LT	295
	296	DRM_DEBUG("\n");
	297
2c14f28b DA	298	minor_id = drm_minor_get_id(dev, type);
	299	if (minor_id < 0)
	300	return minor_id;
	301
	302	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	303	if (!new_minor) {
	304	ret = -ENOMEM;
	305	goto err_idr;
	306	}
	307
	308	new_minor->type = type;
	309	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	310	new_minor->dev = dev;
	311	new_minor->index = minor_id;
7c1c2871	312	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	313
	314	idr_replace(&drm_minors_idr, new_minor, minor_id);
	315
	316	if (type == DRM_MINOR_LEGACY) {
	317	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	318	if (ret) {
	319	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	320	goto err_mem;
1da177e4	321	}
2c14f28b	322	} else
955b12de BG	323	new_minor->proc_root = NULL;
	324
	325	#if defined(CONFIG_DEBUG_FS)
	326	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	327	if (ret) {
	328	DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n");
	329	goto err_g2;
	330	}
	331	#endif
2c14f28b DA	332
	333	ret = drm_sysfs_device_add(new_minor);
	334	if (ret) {
	335	printk(KERN_ERR
	336	"DRM: Error sysfs_device_add.\n");
	337	goto err_g2;
1da177e4	338	}
2c14f28b DA	339	*minor = new_minor;
	340
	341	DRM_DEBUG("new minor assigned %d\n", minor_id);
	342	return 0;
	343
	344
	345	err_g2:
	346	if (new_minor->type == DRM_MINOR_LEGACY)
	347	drm_proc_cleanup(new_minor, drm_proc_root);
	348	err_mem:
	349	kfree(new_minor);
	350	err_idr:
	351	idr_remove(&drm_minors_idr, minor_id);
	352	*minor = NULL;
1da177e4 LT	353	return ret;
1da177e4 LT	354	}
b5e89ed5	355
c94f7029 DA	356	/**
	357	* Register.
	358	*
	359	* \param pdev - PCI device structure
	360	* \param ent entry from the PCI ID table with device type flags
	361	* \return zero on success or a negative number on failure.
	362	*
	363	* Attempt to gets inter module "drm" information. If we are first
	364	* then register the character device and inter module information.
	365	* Try and register, if we fail to register, backout previous work.
	366	*/
	367	int drm_get_dev(struct pci_dev pdev, const struct pci_device_id ent,
b5e89ed5	368	struct drm_driver *driver)
c94f7029	369	{
84b1fd10	370	struct drm_device *dev;
c94f7029 DA	371	int ret;
	372
	373	DRM_DEBUG("\n");
	374
	375	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	376	if (!dev)
	377	return -ENOMEM;
	378
2c3f0edd JG	379	ret = pci_enable_device(pdev);
	380	if (ret)
	381	goto err_g1;
c94f7029	382
19a8f59a	383	pci_set_master(pdev);
c94f7029 DA	384	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
c94f7029 DA	385	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
2c3f0edd	386	goto err_g2;
c94f7029	387	}
f453ba04 DA	388
f453ba04 DA	389	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
112b715e	390	pci_set_drvdata(pdev, dev);
f453ba04 DA	391	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	392	if (ret)
	393	goto err_g2;
	394	}
	395
2c14f28b	396	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
f453ba04	397	goto err_g3;
bc5f4523	398
f453ba04 DA	399	if (dev->driver->load) {
	400	ret = dev->driver->load(dev, ent->driver_data);
	401	if (ret)
a9d51a5a	402	goto err_g3;
f453ba04 DA	403	}
	404
	405	/* setup the grouping for the legacy output */
	406	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	407	ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
	408	if (ret)
	409	goto err_g3;
	410	}
a9d51a5a	411
e7f7ab45 DA	412	list_add_tail(&dev->driver_item, &driver->device_list);
e7f7ab45 DA	413
cd00f95a	414	DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
22eae947	415	driver->name, driver->major, driver->minor, driver->patchlevel,
cd00f95a	416	driver->date, pci_name(pdev), dev->primary->index);
c94f7029 DA	417
	418	return 0;
	419
a9d51a5a DA	420	err_g3:
a9d51a5a DA	421	drm_put_minor(&dev->primary);
2c3f0edd JG	422	err_g2:
	423	pci_disable_device(pdev);
	424	err_g1:
c94f7029 DA	425	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	426	return ret;
	427	}
112b715e	428	EXPORT_SYMBOL(drm_get_dev);
1da177e4 LT	429
	430	/**
	431	* Put a secondary minor number.
	432	*
	433	* \param sec_minor - structure to be released
	434	* \return always zero
	435	*
	436	* Cleans up the proc resources. Not legal for this to be the
	437	* last minor released.
	438	*
	439	*/
2c14f28b	440	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	441	{
2c14f28b	442	struct drm_minor minor = minor_p;
673a394b	443
2c14f28b	444	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	445
2c14f28b DA	446	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	447	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	448	#if defined(CONFIG_DEBUG_FS)
	449	drm_debugfs_cleanup(minor);
	450	#endif
	451
2c14f28b	452	drm_sysfs_device_remove(minor);
1da177e4	453
2c14f28b	454	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	455
2c14f28b DA	456	kfree(minor);
2c14f28b DA	457	*minor_p = NULL;
1da177e4 LT	458	return 0;
1da177e4 LT	459	}
112b715e KH	460
	461	/**
	462	* Called via drm_exit() at module unload time or when pci device is
	463	* unplugged.
	464	*
	465	* Cleans up all DRM device, calling drm_lastclose().
	466	*
	467	* \sa drm_init
	468	*/
	469	void drm_put_dev(struct drm_device *dev)
	470	{
	471	struct drm_driver *driver = dev->driver;
	472	struct drm_map_list r_list, list_temp;
	473
	474	DRM_DEBUG("\n");
	475
	476	if (!dev) {
	477	DRM_ERROR("cleanup called no dev\n");
	478	return;
	479	}
	480
	481	drm_vblank_cleanup(dev);
	482
	483	drm_lastclose(dev);
	484
	485	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	486	dev->agp && dev->agp->agp_mtrr >= 0) {
	487	int retval;
	488	retval = mtrr_del(dev->agp->agp_mtrr,
	489	dev->agp->agp_info.aper_base,
	490	dev->agp->agp_info.aper_size * 1024 * 1024);
	491	DRM_DEBUG("mtrr_del=%d\n", retval);
	492	}
	493
	494	if (dev->driver->unload)
	495	dev->driver->unload(dev);
	496
	497	if (drm_core_has_AGP(dev) && dev->agp) {
	498	drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
	499	dev->agp = NULL;
	500	}
	501
	502	drm_ht_remove(&dev->map_hash);
	503	drm_ctxbitmap_cleanup(dev);
	504
	505	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
	506	drm_rmmap(dev, r_list->map);
	507
	508	if (drm_core_check_feature(dev, DRIVER_MODESET))
	509	drm_put_minor(&dev->control);
	510
	511	if (driver->driver_features & DRIVER_GEM)
	512	drm_gem_destroy(dev);
	513
	514	drm_put_minor(&dev->primary);
	515
	516	if (dev->devname) {
	517	drm_free(dev->devname, strlen(dev->devname) + 1,
	518	DRM_MEM_DRIVER);
	519	dev->devname = NULL;
	520	}
	521	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	522	}
	523	EXPORT_SYMBOL(drm_put_dev);