[linux-2.6-block.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 <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_core.h>

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

unsigned int drm_vblank_offdelay = 5000;    /* Default to 5000 msecs. */
EXPORT_SYMBOL(drm_vblank_offdelay);

unsigned int drm_timestamp_precision = 20;  /* Default to 20 usecs. */
EXPORT_SYMBOL(drm_timestamp_precision);

/*
 * Default to use monotonic timestamps for wait-for-vblank and page-flip
 * complete events.
 */
unsigned int drm_timestamp_monotonic = 1;

MODULE_AUTHOR(CORE_AUTHOR);
MODULE_DESCRIPTION(CORE_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_PARM_DESC(debug, "Enable debug output");
MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");

module_param_named(debug, drm_debug, int, 0600);
module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);

struct idr drm_minors_idr;

struct class *drm_class;
struct proc_dir_entry *drm_proc_root;
struct dentry *drm_debugfs_root;

int drm_err(const char *func, const char *format, ...)
{
	struct va_format vaf;
	va_list args;
	int r;

	va_start(args, format);

	vaf.fmt = format;
	vaf.va = &args;

	r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);

	va_end(args);

	return r;
}
EXPORT_SYMBOL(drm_err);

void drm_ut_debug_printk(unsigned int request_level,
			 const char *prefix,
			 const char *function_name,
			 const char *format, ...)
{
	va_list args;

	if (drm_debug & request_level) {
		if (function_name)
			printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
		va_start(args, format);
		vprintk(format, args);
		va_end(args);
	}
}
EXPORT_SYMBOL(drm_ut_debug_printk);

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 = kzalloc(sizeof(*master), GFP_KERNEL);
	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;
}
EXPORT_SYMBOL(drm_master_get);

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) {
		kfree(master->unique);
		master->unique = NULL;
		master->unique_len = 0;
	}

	kfree(dev->devname);
	dev->devname = NULL;

	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
		list_del(&pt->head);
		drm_ht_remove_item(&master->magiclist, &pt->hash_item);
		kfree(pt);
	}

	drm_ht_remove(&master->magiclist);

	kfree(master);
}

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

int drm_setmaster_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	int ret;

	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)
		return -EINVAL;

	mutex_lock(&dev->struct_mutex);
	file_priv->minor->master = drm_master_get(file_priv->master);
	file_priv->is_master = 1;
	if (dev->driver->master_set) {
		ret = dev->driver->master_set(dev, file_priv, false);
		if (unlikely(ret != 0)) {
			file_priv->is_master = 0;
			drm_master_put(&file_priv->minor->master);
		}
	}
	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;

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

	mutex_lock(&dev->struct_mutex);
	if (dev->driver->master_drop)
		dev->driver->master_drop(dev, file_priv, false);
	drm_master_put(&file_priv->minor->master);
	file_priv->is_master = 0;
	mutex_unlock(&dev->struct_mutex);
	return 0;
}

int drm_fill_in_dev(struct drm_device *dev,
			   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);
	INIT_LIST_HEAD(&dev->vblank_event_list);

	spin_lock_init(&dev->count_lock);
	spin_lock_init(&dev->event_lock);
	mutex_init(&dev->struct_mutex);
	mutex_init(&dev->ctxlist_mutex);

	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 (dev->driver->bus->agp_init) {
		retcode = dev->driver->bus->agp_init(dev);
		if (retcode)
			goto error_out_unreg;
	}


	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;
}
EXPORT_SYMBOL(drm_fill_in_dev);


/**
 * 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
 */
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 /sys/kernel/debug/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;
}
EXPORT_SYMBOL(drm_get_minor);

/**
 * 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;
}
EXPORT_SYMBOL(drm_put_minor);

static void drm_unplug_minor(struct drm_minor *minor)
{
	drm_sysfs_device_remove(minor);
}

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

	DRM_DEBUG("\n");

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

	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) {
		kfree(dev->agp);
		dev->agp = NULL;
	}

	drm_vblank_cleanup(dev);

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

	drm_ctxbitmap_cleanup(dev);

	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);

	list_del(&dev->driver_item);
	kfree(dev->devname);
	kfree(dev);
}
EXPORT_SYMBOL(drm_put_dev);

void drm_unplug_dev(struct drm_device *dev)
{
	/* for a USB device */
	if (drm_core_check_feature(dev, DRIVER_MODESET))
		drm_unplug_minor(dev->control);
	drm_unplug_minor(dev->primary);

	mutex_lock(&drm_global_mutex);

	drm_device_set_unplugged(dev);

	if (dev->open_count == 0) {
		drm_put_dev(dev);
	}
	mutex_unlock(&drm_global_mutex);
}
EXPORT_SYMBOL(drm_unplug_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>
5a0e3ad6	36	#include <linux/slab.h>
760285e7 DH	37	#include <drm/drmP.h>
760285e7 DH	38	#include <drm/drm_core.h>
1da177e4	39
b5e89ed5	40	unsigned int drm_debug = 0; /* 1 to enable debug output */
1da177e4 LT	41	EXPORT_SYMBOL(drm_debug);
1da177e4 LT	42
27641c3f MK	43	unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
	44	EXPORT_SYMBOL(drm_vblank_offdelay);
	45
	46	unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
	47	EXPORT_SYMBOL(drm_timestamp_precision);
	48
c61eef72 ID	49	/*
	50	* Default to use monotonic timestamps for wait-for-vblank and page-flip
	51	* complete events.
	52	*/
	53	unsigned int drm_timestamp_monotonic = 1;
	54
b5e89ed5 DA	55	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	56	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	57	MODULE_LICENSE("GPL and additional rights");
1da177e4	58	MODULE_PARM_DESC(debug, "Enable debug output");
27641c3f MK	59	MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
27641c3f MK	60	MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
c61eef72	61	MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
1da177e4	62
c0758146	63	module_param_named(debug, drm_debug, int, 0600);
27641c3f MK	64	module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
27641c3f MK	65	module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
c61eef72	66	module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);
1da177e4	67
2c14f28b DA	68	struct idr drm_minors_idr;
2c14f28b DA	69
0650fd58	70	struct class *drm_class;
1da177e4	71	struct proc_dir_entry *drm_proc_root;
955b12de	72	struct dentry *drm_debugfs_root;
5ad3d883 JP	73
	74	int drm_err(const char func, const char format, ...)
	75	{
	76	struct va_format vaf;
	77	va_list args;
	78	int r;
	79
	80	va_start(args, format);
	81
	82	vaf.fmt = format;
	83	vaf.va = &args;
	84
	85	r = printk(KERN_ERR "[" DRM_NAME ":%s] ERROR %pV", func, &vaf);
	86
	87	va_end(args);
	88
	89	return r;
	90	}
	91	EXPORT_SYMBOL(drm_err);
	92
4fefcb27	93	void drm_ut_debug_printk(unsigned int request_level,
	94	const char *prefix,
	95	const char *function_name,
	96	const char *format, ...)
	97	{
	98	va_list args;
1da177e4	99
4fefcb27	100	if (drm_debug & request_level) {
	101	if (function_name)
	102	printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
	103	va_start(args, format);
	104	vprintk(format, args);
	105	va_end(args);
	106	}
	107	}
	108	EXPORT_SYMBOL(drm_ut_debug_printk);
5ad3d883	109
2c14f28b DA	110	static int drm_minor_get_id(struct drm_device *dev, int type)
	111	{
	112	int new_id;
	113	int ret;
	114	int base = 0, limit = 63;
	115
f453ba04 DA	116	if (type == DRM_MINOR_CONTROL) {
	117	base += 64;
	118	limit = base + 127;
	119	} else if (type == DRM_MINOR_RENDER) {
	120	base += 128;
	121	limit = base + 255;
	122	}
	123
2c14f28b DA	124	again:
	125	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	126	DRM_ERROR("Out of memory expanding drawable idr\n");
	127	return -ENOMEM;
	128	}
	129	mutex_lock(&dev->struct_mutex);
	130	ret = idr_get_new_above(&drm_minors_idr, NULL,
	131	base, &new_id);
	132	mutex_unlock(&dev->struct_mutex);
f1ae126c	133	if (ret == -EAGAIN)
2c14f28b	134	goto again;
f1ae126c	135	else if (ret)
2c14f28b	136	return ret;
2c14f28b DA	137
	138	if (new_id >= limit) {
	139	idr_remove(&drm_minors_idr, new_id);
	140	return -EINVAL;
	141	}
	142	return new_id;
	143	}
	144
7c1c2871 DA	145	struct drm_master drm_master_create(struct drm_minor minor)
	146	{
	147	struct drm_master *master;
	148
9a298b2a	149	master = kzalloc(sizeof(*master), GFP_KERNEL);
7c1c2871 DA	150	if (!master)
	151	return NULL;
	152
	153	kref_init(&master->refcount);
	154	spin_lock_init(&master->lock.spinlock);
	155	init_waitqueue_head(&master->lock.lock_queue);
	156	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	157	INIT_LIST_HEAD(&master->magicfree);
	158	master->minor = minor;
	159
	160	list_add_tail(&master->head, &minor->master_list);
	161
	162	return master;
	163	}
	164
	165	struct drm_master drm_master_get(struct drm_master master)
	166	{
	167	kref_get(&master->refcount);
	168	return master;
	169	}
85bb0c37	170	EXPORT_SYMBOL(drm_master_get);
7c1c2871 DA	171
	172	static void drm_master_destroy(struct kref *kref)
	173	{
	174	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	175	struct drm_magic_entry pt, next;
	176	struct drm_device *dev = master->minor->dev;
c1ff85d9	177	struct drm_map_list r_list, list_temp;
7c1c2871 DA	178
	179	list_del(&master->head);
	180
	181	if (dev->driver->master_destroy)
	182	dev->driver->master_destroy(dev, master);
	183
c1ff85d9 DA	184	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	185	if (r_list->master == master) {
	186	drm_rmmap_locked(dev, r_list->map);
	187	r_list = NULL;
	188	}
	189	}
	190
7c1c2871	191	if (master->unique) {
9a298b2a	192	kfree(master->unique);
7c1c2871 DA	193	master->unique = NULL;
	194	master->unique_len = 0;
	195	}
	196
6e35023f CW	197	kfree(dev->devname);
	198	dev->devname = NULL;
	199
7c1c2871 DA	200	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	201	list_del(&pt->head);
	202	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
9a298b2a	203	kfree(pt);
7c1c2871 DA	204	}
	205
	206	drm_ht_remove(&master->magiclist);
	207
9a298b2a	208	kfree(master);
7c1c2871 DA	209	}
	210
	211	void drm_master_put(struct drm_master **master)
	212	{
	213	kref_put(&(*master)->refcount, drm_master_destroy);
	214	*master = NULL;
	215	}
85bb0c37	216	EXPORT_SYMBOL(drm_master_put);
7c1c2871 DA	217
	218	int drm_setmaster_ioctl(struct drm_device dev, void data,
	219	struct drm_file *file_priv)
	220	{
4a1b0714	221	int ret;
862302ff	222
6b008426 JB	223	if (file_priv->is_master)
	224	return 0;
	225
7c1c2871 DA	226	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	227	return -EINVAL;
	228
	229	if (!file_priv->master)
	230	return -EINVAL;
	231
08bec5b4 DH	232	if (file_priv->minor->master)
	233	return -EINVAL;
	234
	235	mutex_lock(&dev->struct_mutex);
	236	file_priv->minor->master = drm_master_get(file_priv->master);
	237	file_priv->is_master = 1;
	238	if (dev->driver->master_set) {
	239	ret = dev->driver->master_set(dev, file_priv, false);
	240	if (unlikely(ret != 0)) {
	241	file_priv->is_master = 0;
	242	drm_master_put(&file_priv->minor->master);
862302ff	243	}
7c1c2871	244	}
08bec5b4	245	mutex_unlock(&dev->struct_mutex);
7c1c2871 DA	246
	247	return 0;
	248	}
	249
	250	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	251	struct drm_file *file_priv)
	252	{
6b008426	253	if (!file_priv->is_master)
7c1c2871	254	return -EINVAL;
6b008426	255
07f1c7a7 DA	256	if (!file_priv->minor->master)
	257	return -EINVAL;
	258
7c1c2871	259	mutex_lock(&dev->struct_mutex);
862302ff TH	260	if (dev->driver->master_drop)
862302ff TH	261	dev->driver->master_drop(dev, file_priv, false);
7c1c2871	262	drm_master_put(&file_priv->minor->master);
6b008426	263	file_priv->is_master = 0;
7c1c2871 DA	264	mutex_unlock(&dev->struct_mutex);
	265	return 0;
	266	}
	267
dcdb1674	268	int drm_fill_in_dev(struct drm_device *dev,
b5e89ed5 DA	269	const struct pci_device_id *ent,
b5e89ed5 DA	270	struct drm_driver *driver)
1da177e4 LT	271	{
	272	int retcode;
	273
bd1b331f	274	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	275	INIT_LIST_HEAD(&dev->ctxlist);
	276	INIT_LIST_HEAD(&dev->vmalist);
	277	INIT_LIST_HEAD(&dev->maplist);
c9a9c5e0	278	INIT_LIST_HEAD(&dev->vblank_event_list);
7c158ace	279
1da177e4	280	spin_lock_init(&dev->count_lock);
c9a9c5e0	281	spin_lock_init(&dev->event_lock);
30e2fb18 DA	282	mutex_init(&dev->struct_mutex);
30e2fb18 DA	283	mutex_init(&dev->ctxlist_mutex);
1da177e4	284
8d153f71	285	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	286	return -ENOMEM;
8d153f71 TH	287	}
836cf046	288
1da177e4 LT	289	/* the DRM has 6 basic counters */
1da177e4 LT	290	dev->counters = 6;
b5e89ed5 DA	291	dev->types[0] = _DRM_STAT_LOCK;
	292	dev->types[1] = _DRM_STAT_OPENS;
	293	dev->types[2] = _DRM_STAT_CLOSES;
	294	dev->types[3] = _DRM_STAT_IOCTLS;
	295	dev->types[4] = _DRM_STAT_LOCKS;
	296	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	297
1da177e4 LT	298	dev->driver = driver;
b5e89ed5	299
8410ea3b DA	300	if (dev->driver->bus->agp_init) {
	301	retcode = dev->driver->bus->agp_init(dev);
	302	if (retcode)
1da177e4	303	goto error_out_unreg;
1da177e4 LT	304	}
1da177e4 LT	305
2716a02f	306
8410ea3b	307
b5e89ed5 DA	308	retcode = drm_ctxbitmap_init(dev);
	309	if (retcode) {
	310	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	311	goto error_out_unreg;
	312	}
	313
673a394b EA	314	if (driver->driver_features & DRIVER_GEM) {
	315	retcode = drm_gem_init(dev);
	316	if (retcode) {
	317	DRM_ERROR("Cannot initialize graphics execution "
	318	"manager (GEM)\n");
	319	goto error_out_unreg;
	320	}
	321	}
	322
1da177e4	323	return 0;
b5e89ed5 DA	324
b5e89ed5 DA	325	error_out_unreg:
22eae947	326	drm_lastclose(dev);
1da177e4 LT	327	return retcode;
1da177e4 LT	328	}
9c1dfc55	329	EXPORT_SYMBOL(drm_fill_in_dev);
1da177e4	330
1da177e4	331
1da177e4 LT	332	/**
	333	* Get a secondary minor number.
	334	*
	335	* \param dev device data structure
	336	* \param sec-minor structure to hold the assigned minor
	337	* \return negative number on failure.
	338	*
	339	* Search an empty entry and initialize it to the given parameters, and
	340	* create the proc init entry via proc_init(). This routines assigns
	341	* minor numbers to secondary heads of multi-headed cards
	342	*/
dcdb1674	343	int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	344	{
2c14f28b	345	struct drm_minor *new_minor;
1da177e4	346	int ret;
2c14f28b	347	int minor_id;
1da177e4 LT	348
	349	DRM_DEBUG("\n");
	350
2c14f28b DA	351	minor_id = drm_minor_get_id(dev, type);
	352	if (minor_id < 0)
	353	return minor_id;
	354
	355	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	356	if (!new_minor) {
	357	ret = -ENOMEM;
	358	goto err_idr;
	359	}
	360
	361	new_minor->type = type;
	362	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	363	new_minor->dev = dev;
	364	new_minor->index = minor_id;
7c1c2871	365	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	366
	367	idr_replace(&drm_minors_idr, new_minor, minor_id);
	368
	369	if (type == DRM_MINOR_LEGACY) {
	370	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	371	if (ret) {
	372	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	373	goto err_mem;
1da177e4	374	}
2c14f28b	375	} else
955b12de BG	376	new_minor->proc_root = NULL;
	377
	378	#if defined(CONFIG_DEBUG_FS)
	379	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	380	if (ret) {
156f5a78	381	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
955b12de BG	382	goto err_g2;
	383	}
	384	#endif
2c14f28b DA	385
	386	ret = drm_sysfs_device_add(new_minor);
	387	if (ret) {
	388	printk(KERN_ERR
	389	"DRM: Error sysfs_device_add.\n");
	390	goto err_g2;
1da177e4	391	}
2c14f28b DA	392	*minor = new_minor;
	393
	394	DRM_DEBUG("new minor assigned %d\n", minor_id);
	395	return 0;
	396
	397
	398	err_g2:
	399	if (new_minor->type == DRM_MINOR_LEGACY)
	400	drm_proc_cleanup(new_minor, drm_proc_root);
	401	err_mem:
	402	kfree(new_minor);
	403	err_idr:
	404	idr_remove(&drm_minors_idr, minor_id);
	405	*minor = NULL;
1da177e4 LT	406	return ret;
1da177e4 LT	407	}
9c1dfc55	408	EXPORT_SYMBOL(drm_get_minor);
b5e89ed5	409
1da177e4 LT	410	/**
	411	* Put a secondary minor number.
	412	*
	413	* \param sec_minor - structure to be released
	414	* \return always zero
	415	*
	416	* Cleans up the proc resources. Not legal for this to be the
	417	* last minor released.
	418	*
	419	*/
2c14f28b	420	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	421	{
2c14f28b	422	struct drm_minor minor = minor_p;
673a394b	423
2c14f28b	424	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	425
2c14f28b DA	426	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	427	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	428	#if defined(CONFIG_DEBUG_FS)
	429	drm_debugfs_cleanup(minor);
	430	#endif
	431
2c14f28b	432	drm_sysfs_device_remove(minor);
1da177e4	433
2c14f28b	434	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	435
2c14f28b DA	436	kfree(minor);
2c14f28b DA	437	*minor_p = NULL;
1da177e4 LT	438	return 0;
1da177e4 LT	439	}
9c1dfc55	440	EXPORT_SYMBOL(drm_put_minor);
112b715e	441
2c07a21d DA	442	static void drm_unplug_minor(struct drm_minor *minor)
	443	{
	444	drm_sysfs_device_remove(minor);
	445	}
	446
112b715e KH	447	/**
	448	* Called via drm_exit() at module unload time or when pci device is
	449	* unplugged.
	450	*
	451	* Cleans up all DRM device, calling drm_lastclose().
	452	*
112b715e KH	453	*/
	454	void drm_put_dev(struct drm_device *dev)
	455	{
ecca0683	456	struct drm_driver *driver;
112b715e KH	457	struct drm_map_list r_list, list_temp;
	458
	459	DRM_DEBUG("\n");
	460
	461	if (!dev) {
	462	DRM_ERROR("cleanup called no dev\n");
	463	return;
	464	}
ecca0683	465	driver = dev->driver;
112b715e	466
112b715e KH	467	drm_lastclose(dev);
	468
	469	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	470	dev->agp && dev->agp->agp_mtrr >= 0) {
	471	int retval;
	472	retval = mtrr_del(dev->agp->agp_mtrr,
	473	dev->agp->agp_info.aper_base,
	474	dev->agp->agp_info.aper_size * 1024 * 1024);
	475	DRM_DEBUG("mtrr_del=%d\n", retval);
	476	}
	477
	478	if (dev->driver->unload)
	479	dev->driver->unload(dev);
	480
	481	if (drm_core_has_AGP(dev) && dev->agp) {
9a298b2a	482	kfree(dev->agp);
112b715e KH	483	dev->agp = NULL;
	484	}
	485
b78315f0 JB	486	drm_vblank_cleanup(dev);
b78315f0 JB	487
112b715e KH	488	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
112b715e KH	489	drm_rmmap(dev, r_list->map);
30ddbd94 BS	490	drm_ht_remove(&dev->map_hash);
	491
	492	drm_ctxbitmap_cleanup(dev);
112b715e KH	493
	494	if (drm_core_check_feature(dev, DRIVER_MODESET))
	495	drm_put_minor(&dev->control);
	496
	497	if (driver->driver_features & DRIVER_GEM)
	498	drm_gem_destroy(dev);
	499
	500	drm_put_minor(&dev->primary);
	501
a250b9fd	502	list_del(&dev->driver_item);
66141d3d	503	kfree(dev->devname);
9a298b2a	504	kfree(dev);
112b715e KH	505	}
112b715e KH	506	EXPORT_SYMBOL(drm_put_dev);
2c07a21d DA	507
	508	void drm_unplug_dev(struct drm_device *dev)
	509	{
	510	/* for a USB device */
	511	if (drm_core_check_feature(dev, DRIVER_MODESET))
	512	drm_unplug_minor(dev->control);
	513	drm_unplug_minor(dev->primary);
	514
	515	mutex_lock(&drm_global_mutex);
	516
	517	drm_device_set_unplugged(dev);
	518
	519	if (dev->open_count == 0) {
	520	drm_put_dev(dev);
	521	}
	522	mutex_unlock(&drm_global_mutex);
	523	}
	524	EXPORT_SYMBOL(drm_unplug_dev);