[deliverable/linux.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 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;
        }

	mutex_lock(&dev->struct_mutex);
	ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL);
	mutex_unlock(&dev->struct_mutex);

	return ret == -ENOSPC ? -EINVAL : ret;
}

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 = 0;

	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 ret;
}

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, 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)
		arch_phys_wc_del(dev->agp->agp_mtrr);

	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)
2c14f28b DA	111	{
2c14f28b DA	112	int ret;
	113	int base = 0, limit = 63;
	114
f453ba04 DA	115	if (type == DRM_MINOR_CONTROL) {
	116	base += 64;
	117	limit = base + 127;
	118	} else if (type == DRM_MINOR_RENDER) {
	119	base += 128;
	120	limit = base + 255;
	121	}
	122
2c14f28b	123	mutex_lock(&dev->struct_mutex);
2e928815	124	ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL);
2c14f28b	125	mutex_unlock(&dev->struct_mutex);
2e928815 TH	126
2e928815 TH	127	return ret == -ENOSPC ? -EINVAL : ret;
2c14f28b DA	128	}
2c14f28b DA	129
7c1c2871 DA	130	struct drm_master drm_master_create(struct drm_minor minor)
	131	{
	132	struct drm_master *master;
	133
9a298b2a	134	master = kzalloc(sizeof(*master), GFP_KERNEL);
7c1c2871 DA	135	if (!master)
	136	return NULL;
	137
	138	kref_init(&master->refcount);
	139	spin_lock_init(&master->lock.spinlock);
	140	init_waitqueue_head(&master->lock.lock_queue);
	141	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	142	INIT_LIST_HEAD(&master->magicfree);
	143	master->minor = minor;
	144
	145	list_add_tail(&master->head, &minor->master_list);
	146
	147	return master;
	148	}
	149
	150	struct drm_master drm_master_get(struct drm_master master)
	151	{
	152	kref_get(&master->refcount);
	153	return master;
	154	}
85bb0c37	155	EXPORT_SYMBOL(drm_master_get);
7c1c2871 DA	156
	157	static void drm_master_destroy(struct kref *kref)
	158	{
	159	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	160	struct drm_magic_entry pt, next;
	161	struct drm_device *dev = master->minor->dev;
c1ff85d9	162	struct drm_map_list r_list, list_temp;
7c1c2871 DA	163
	164	list_del(&master->head);
	165
	166	if (dev->driver->master_destroy)
	167	dev->driver->master_destroy(dev, master);
	168
c1ff85d9 DA	169	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	170	if (r_list->master == master) {
	171	drm_rmmap_locked(dev, r_list->map);
	172	r_list = NULL;
	173	}
	174	}
	175
7c1c2871	176	if (master->unique) {
9a298b2a	177	kfree(master->unique);
7c1c2871 DA	178	master->unique = NULL;
	179	master->unique_len = 0;
	180	}
	181
6e35023f CW	182	kfree(dev->devname);
	183	dev->devname = NULL;
	184
7c1c2871 DA	185	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	186	list_del(&pt->head);
	187	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
9a298b2a	188	kfree(pt);
7c1c2871 DA	189	}
	190
	191	drm_ht_remove(&master->magiclist);
	192
9a298b2a	193	kfree(master);
7c1c2871 DA	194	}
	195
	196	void drm_master_put(struct drm_master **master)
	197	{
	198	kref_put(&(*master)->refcount, drm_master_destroy);
	199	*master = NULL;
	200	}
85bb0c37	201	EXPORT_SYMBOL(drm_master_put);
7c1c2871 DA	202
	203	int drm_setmaster_ioctl(struct drm_device dev, void data,
	204	struct drm_file *file_priv)
	205	{
53ef1600	206	int ret = 0;
862302ff	207
6b008426 JB	208	if (file_priv->is_master)
	209	return 0;
	210
7c1c2871 DA	211	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	212	return -EINVAL;
	213
	214	if (!file_priv->master)
	215	return -EINVAL;
	216
08bec5b4 DH	217	if (file_priv->minor->master)
	218	return -EINVAL;
	219
	220	mutex_lock(&dev->struct_mutex);
	221	file_priv->minor->master = drm_master_get(file_priv->master);
	222	file_priv->is_master = 1;
	223	if (dev->driver->master_set) {
	224	ret = dev->driver->master_set(dev, file_priv, false);
	225	if (unlikely(ret != 0)) {
	226	file_priv->is_master = 0;
	227	drm_master_put(&file_priv->minor->master);
862302ff	228	}
7c1c2871	229	}
08bec5b4	230	mutex_unlock(&dev->struct_mutex);
7c1c2871	231
53ef1600	232	return ret;
7c1c2871 DA	233	}
	234
	235	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	236	struct drm_file *file_priv)
	237	{
6b008426	238	if (!file_priv->is_master)
7c1c2871	239	return -EINVAL;
6b008426	240
07f1c7a7 DA	241	if (!file_priv->minor->master)
	242	return -EINVAL;
	243
7c1c2871	244	mutex_lock(&dev->struct_mutex);
862302ff TH	245	if (dev->driver->master_drop)
862302ff TH	246	dev->driver->master_drop(dev, file_priv, false);
7c1c2871	247	drm_master_put(&file_priv->minor->master);
6b008426	248	file_priv->is_master = 0;
7c1c2871 DA	249	mutex_unlock(&dev->struct_mutex);
	250	return 0;
	251	}
	252
dcdb1674	253	int drm_fill_in_dev(struct drm_device *dev,
b5e89ed5 DA	254	const struct pci_device_id *ent,
b5e89ed5 DA	255	struct drm_driver *driver)
1da177e4 LT	256	{
	257	int retcode;
	258
bd1b331f	259	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	260	INIT_LIST_HEAD(&dev->ctxlist);
	261	INIT_LIST_HEAD(&dev->vmalist);
	262	INIT_LIST_HEAD(&dev->maplist);
c9a9c5e0	263	INIT_LIST_HEAD(&dev->vblank_event_list);
7c158ace	264
1da177e4	265	spin_lock_init(&dev->count_lock);
c9a9c5e0	266	spin_lock_init(&dev->event_lock);
30e2fb18 DA	267	mutex_init(&dev->struct_mutex);
30e2fb18 DA	268	mutex_init(&dev->ctxlist_mutex);
1da177e4	269
8d153f71	270	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	271	return -ENOMEM;
8d153f71 TH	272	}
836cf046	273
1da177e4 LT	274	/* the DRM has 6 basic counters */
1da177e4 LT	275	dev->counters = 6;
b5e89ed5 DA	276	dev->types[0] = _DRM_STAT_LOCK;
	277	dev->types[1] = _DRM_STAT_OPENS;
	278	dev->types[2] = _DRM_STAT_CLOSES;
	279	dev->types[3] = _DRM_STAT_IOCTLS;
	280	dev->types[4] = _DRM_STAT_LOCKS;
	281	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	282
1da177e4 LT	283	dev->driver = driver;
b5e89ed5	284
8410ea3b DA	285	if (dev->driver->bus->agp_init) {
	286	retcode = dev->driver->bus->agp_init(dev);
	287	if (retcode)
1da177e4	288	goto error_out_unreg;
1da177e4 LT	289	}
1da177e4 LT	290
2716a02f	291
8410ea3b	292
b5e89ed5 DA	293	retcode = drm_ctxbitmap_init(dev);
	294	if (retcode) {
	295	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	296	goto error_out_unreg;
	297	}
	298
673a394b EA	299	if (driver->driver_features & DRIVER_GEM) {
	300	retcode = drm_gem_init(dev);
	301	if (retcode) {
	302	DRM_ERROR("Cannot initialize graphics execution "
	303	"manager (GEM)\n");
	304	goto error_out_unreg;
	305	}
	306	}
	307
1da177e4	308	return 0;
b5e89ed5 DA	309
b5e89ed5 DA	310	error_out_unreg:
22eae947	311	drm_lastclose(dev);
1da177e4 LT	312	return retcode;
1da177e4 LT	313	}
9c1dfc55	314	EXPORT_SYMBOL(drm_fill_in_dev);
1da177e4	315
1da177e4	316
1da177e4 LT	317	/**
	318	* Get a secondary minor number.
	319	*
	320	* \param dev device data structure
	321	* \param sec-minor structure to hold the assigned minor
	322	* \return negative number on failure.
	323	*
	324	* Search an empty entry and initialize it to the given parameters, and
	325	* create the proc init entry via proc_init(). This routines assigns
	326	* minor numbers to secondary heads of multi-headed cards
	327	*/
dcdb1674	328	int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	329	{
2c14f28b	330	struct drm_minor *new_minor;
1da177e4	331	int ret;
2c14f28b	332	int minor_id;
1da177e4 LT	333
	334	DRM_DEBUG("\n");
	335
2c14f28b DA	336	minor_id = drm_minor_get_id(dev, type);
	337	if (minor_id < 0)
	338	return minor_id;
	339
	340	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	341	if (!new_minor) {
	342	ret = -ENOMEM;
	343	goto err_idr;
	344	}
	345
	346	new_minor->type = type;
	347	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	348	new_minor->dev = dev;
	349	new_minor->index = minor_id;
7c1c2871	350	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	351
	352	idr_replace(&drm_minors_idr, new_minor, minor_id);
	353
	354	if (type == DRM_MINOR_LEGACY) {
b63e6aa5	355	ret = drm_proc_init(new_minor, drm_proc_root);
2c14f28b DA	356	if (ret) {
	357	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	358	goto err_mem;
1da177e4	359	}
2c14f28b	360	} else
955b12de BG	361	new_minor->proc_root = NULL;
	362
	363	#if defined(CONFIG_DEBUG_FS)
	364	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	365	if (ret) {
156f5a78	366	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
955b12de BG	367	goto err_g2;
	368	}
	369	#endif
2c14f28b DA	370
	371	ret = drm_sysfs_device_add(new_minor);
	372	if (ret) {
	373	printk(KERN_ERR
	374	"DRM: Error sysfs_device_add.\n");
	375	goto err_g2;
1da177e4	376	}
2c14f28b DA	377	*minor = new_minor;
	378
	379	DRM_DEBUG("new minor assigned %d\n", minor_id);
	380	return 0;
	381
	382
	383	err_g2:
	384	if (new_minor->type == DRM_MINOR_LEGACY)
	385	drm_proc_cleanup(new_minor, drm_proc_root);
	386	err_mem:
	387	kfree(new_minor);
	388	err_idr:
	389	idr_remove(&drm_minors_idr, minor_id);
	390	*minor = NULL;
1da177e4 LT	391	return ret;
1da177e4 LT	392	}
9c1dfc55	393	EXPORT_SYMBOL(drm_get_minor);
b5e89ed5	394
1da177e4 LT	395	/**
	396	* Put a secondary minor number.
	397	*
	398	* \param sec_minor - structure to be released
	399	* \return always zero
	400	*
	401	* Cleans up the proc resources. Not legal for this to be the
	402	* last minor released.
	403	*
	404	*/
2c14f28b	405	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	406	{
2c14f28b	407	struct drm_minor minor = minor_p;
673a394b	408
2c14f28b	409	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	410
2c14f28b DA	411	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	412	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	413	#if defined(CONFIG_DEBUG_FS)
	414	drm_debugfs_cleanup(minor);
	415	#endif
	416
2c14f28b	417	drm_sysfs_device_remove(minor);
1da177e4	418
2c14f28b	419	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	420
2c14f28b DA	421	kfree(minor);
2c14f28b DA	422	*minor_p = NULL;
1da177e4 LT	423	return 0;
1da177e4 LT	424	}
9c1dfc55	425	EXPORT_SYMBOL(drm_put_minor);
112b715e	426
2c07a21d DA	427	static void drm_unplug_minor(struct drm_minor *minor)
	428	{
	429	drm_sysfs_device_remove(minor);
	430	}
	431
112b715e KH	432	/**
	433	* Called via drm_exit() at module unload time or when pci device is
	434	* unplugged.
	435	*
	436	* Cleans up all DRM device, calling drm_lastclose().
	437	*
112b715e KH	438	*/
	439	void drm_put_dev(struct drm_device *dev)
	440	{
ecca0683	441	struct drm_driver *driver;
112b715e KH	442	struct drm_map_list r_list, list_temp;
	443
	444	DRM_DEBUG("\n");
	445
	446	if (!dev) {
	447	DRM_ERROR("cleanup called no dev\n");
	448	return;
	449	}
ecca0683	450	driver = dev->driver;
112b715e	451
112b715e KH	452	drm_lastclose(dev);
112b715e KH	453
f435046d AL	454	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp)
f435046d AL	455	arch_phys_wc_del(dev->agp->agp_mtrr);
112b715e KH	456
	457	if (dev->driver->unload)
	458	dev->driver->unload(dev);
	459
	460	if (drm_core_has_AGP(dev) && dev->agp) {
9a298b2a	461	kfree(dev->agp);
112b715e KH	462	dev->agp = NULL;
	463	}
	464
b78315f0 JB	465	drm_vblank_cleanup(dev);
b78315f0 JB	466
112b715e KH	467	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
112b715e KH	468	drm_rmmap(dev, r_list->map);
30ddbd94 BS	469	drm_ht_remove(&dev->map_hash);
	470
	471	drm_ctxbitmap_cleanup(dev);
112b715e KH	472
	473	if (drm_core_check_feature(dev, DRIVER_MODESET))
	474	drm_put_minor(&dev->control);
	475
	476	if (driver->driver_features & DRIVER_GEM)
	477	drm_gem_destroy(dev);
	478
	479	drm_put_minor(&dev->primary);
	480
a250b9fd	481	list_del(&dev->driver_item);
66141d3d	482	kfree(dev->devname);
9a298b2a	483	kfree(dev);
112b715e KH	484	}
112b715e KH	485	EXPORT_SYMBOL(drm_put_dev);
2c07a21d DA	486
	487	void drm_unplug_dev(struct drm_device *dev)
	488	{
	489	/* for a USB device */
	490	if (drm_core_check_feature(dev, DRIVER_MODESET))
	491	drm_unplug_minor(dev->control);
	492	drm_unplug_minor(dev->primary);
	493
	494	mutex_lock(&drm_global_mutex);
	495
	496	drm_device_set_unplugged(dev);
	497
	498	if (dev->open_count == 0) {
	499	drm_put_dev(dev);
	500	}
	501	mutex_unlock(&drm_global_mutex);
	502	}
	503	EXPORT_SYMBOL(drm_unplug_dev);