[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);

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_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);

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 &&
	    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;
		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);
	if (dev->devname) {
		kfree(dev->devname);
		dev->devname = NULL;
	}
	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
b5e89ed5 DA	49	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	50	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	51	MODULE_LICENSE("GPL and additional rights");
1da177e4	52	MODULE_PARM_DESC(debug, "Enable debug output");
27641c3f MK	53	MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
27641c3f MK	54	MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
1da177e4	55
c0758146	56	module_param_named(debug, drm_debug, int, 0600);
27641c3f MK	57	module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
27641c3f MK	58	module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
1da177e4	59
2c14f28b DA	60	struct idr drm_minors_idr;
2c14f28b DA	61
0650fd58	62	struct class *drm_class;
1da177e4	63	struct proc_dir_entry *drm_proc_root;
955b12de	64	struct dentry *drm_debugfs_root;
5ad3d883 JP	65
	66	int drm_err(const char func, const char format, ...)
	67	{
	68	struct va_format vaf;
	69	va_list args;
	70	int r;
	71
	72	va_start(args, format);
	73
	74	vaf.fmt = format;
	75	vaf.va = &args;
	76
	77	r = printk(KERN_ERR "[" DRM_NAME ":%s] ERROR %pV", func, &vaf);
	78
	79	va_end(args);
	80
	81	return r;
	82	}
	83	EXPORT_SYMBOL(drm_err);
	84
4fefcb27	85	void drm_ut_debug_printk(unsigned int request_level,
	86	const char *prefix,
	87	const char *function_name,
	88	const char *format, ...)
	89	{
	90	va_list args;
1da177e4	91
4fefcb27	92	if (drm_debug & request_level) {
	93	if (function_name)
	94	printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
	95	va_start(args, format);
	96	vprintk(format, args);
	97	va_end(args);
	98	}
	99	}
	100	EXPORT_SYMBOL(drm_ut_debug_printk);
5ad3d883	101
2c14f28b DA	102	static int drm_minor_get_id(struct drm_device *dev, int type)
	103	{
	104	int new_id;
	105	int ret;
	106	int base = 0, limit = 63;
	107
f453ba04 DA	108	if (type == DRM_MINOR_CONTROL) {
	109	base += 64;
	110	limit = base + 127;
	111	} else if (type == DRM_MINOR_RENDER) {
	112	base += 128;
	113	limit = base + 255;
	114	}
	115
2c14f28b DA	116	again:
	117	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	118	DRM_ERROR("Out of memory expanding drawable idr\n");
	119	return -ENOMEM;
	120	}
	121	mutex_lock(&dev->struct_mutex);
	122	ret = idr_get_new_above(&drm_minors_idr, NULL,
	123	base, &new_id);
	124	mutex_unlock(&dev->struct_mutex);
f1ae126c	125	if (ret == -EAGAIN)
2c14f28b	126	goto again;
f1ae126c	127	else if (ret)
2c14f28b	128	return ret;
2c14f28b DA	129
	130	if (new_id >= limit) {
	131	idr_remove(&drm_minors_idr, new_id);
	132	return -EINVAL;
	133	}
	134	return new_id;
	135	}
	136
7c1c2871 DA	137	struct drm_master drm_master_create(struct drm_minor minor)
	138	{
	139	struct drm_master *master;
	140
9a298b2a	141	master = kzalloc(sizeof(*master), GFP_KERNEL);
7c1c2871 DA	142	if (!master)
	143	return NULL;
	144
	145	kref_init(&master->refcount);
	146	spin_lock_init(&master->lock.spinlock);
	147	init_waitqueue_head(&master->lock.lock_queue);
	148	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	149	INIT_LIST_HEAD(&master->magicfree);
	150	master->minor = minor;
	151
	152	list_add_tail(&master->head, &minor->master_list);
	153
	154	return master;
	155	}
	156
	157	struct drm_master drm_master_get(struct drm_master master)
	158	{
	159	kref_get(&master->refcount);
	160	return master;
	161	}
85bb0c37	162	EXPORT_SYMBOL(drm_master_get);
7c1c2871 DA	163
	164	static void drm_master_destroy(struct kref *kref)
	165	{
	166	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	167	struct drm_magic_entry pt, next;
	168	struct drm_device *dev = master->minor->dev;
c1ff85d9	169	struct drm_map_list r_list, list_temp;
7c1c2871 DA	170
	171	list_del(&master->head);
	172
	173	if (dev->driver->master_destroy)
	174	dev->driver->master_destroy(dev, master);
	175
c1ff85d9 DA	176	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	177	if (r_list->master == master) {
	178	drm_rmmap_locked(dev, r_list->map);
	179	r_list = NULL;
	180	}
	181	}
	182
7c1c2871	183	if (master->unique) {
9a298b2a	184	kfree(master->unique);
7c1c2871 DA	185	master->unique = NULL;
	186	master->unique_len = 0;
	187	}
	188
6e35023f CW	189	kfree(dev->devname);
	190	dev->devname = NULL;
	191
7c1c2871 DA	192	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	193	list_del(&pt->head);
	194	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
9a298b2a	195	kfree(pt);
7c1c2871 DA	196	}
	197
	198	drm_ht_remove(&master->magiclist);
	199
9a298b2a	200	kfree(master);
7c1c2871 DA	201	}
	202
	203	void drm_master_put(struct drm_master **master)
	204	{
	205	kref_put(&(*master)->refcount, drm_master_destroy);
	206	*master = NULL;
	207	}
85bb0c37	208	EXPORT_SYMBOL(drm_master_put);
7c1c2871 DA	209
	210	int drm_setmaster_ioctl(struct drm_device dev, void data,
	211	struct drm_file *file_priv)
	212	{
4a1b0714	213	int ret;
862302ff	214
6b008426 JB	215	if (file_priv->is_master)
	216	return 0;
	217
7c1c2871 DA	218	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	219	return -EINVAL;
	220
	221	if (!file_priv->master)
	222	return -EINVAL;
	223
	224	if (!file_priv->minor->master &&
	225	file_priv->minor->master != file_priv->master) {
	226	mutex_lock(&dev->struct_mutex);
	227	file_priv->minor->master = drm_master_get(file_priv->master);
6b008426	228	file_priv->is_master = 1;
862302ff TH	229	if (dev->driver->master_set) {
	230	ret = dev->driver->master_set(dev, file_priv, false);
	231	if (unlikely(ret != 0)) {
	232	file_priv->is_master = 0;
	233	drm_master_put(&file_priv->minor->master);
	234	}
	235	}
5ad8b7d1	236	mutex_unlock(&dev->struct_mutex);
7c1c2871 DA	237	}
	238
	239	return 0;
	240	}
	241
	242	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	243	struct drm_file *file_priv)
	244	{
6b008426	245	if (!file_priv->is_master)
7c1c2871	246	return -EINVAL;
6b008426	247
07f1c7a7 DA	248	if (!file_priv->minor->master)
	249	return -EINVAL;
	250
7c1c2871	251	mutex_lock(&dev->struct_mutex);
862302ff TH	252	if (dev->driver->master_drop)
862302ff TH	253	dev->driver->master_drop(dev, file_priv, false);
7c1c2871	254	drm_master_put(&file_priv->minor->master);
6b008426	255	file_priv->is_master = 0;
7c1c2871 DA	256	mutex_unlock(&dev->struct_mutex);
	257	return 0;
	258	}
	259
dcdb1674	260	int drm_fill_in_dev(struct drm_device *dev,
b5e89ed5 DA	261	const struct pci_device_id *ent,
b5e89ed5 DA	262	struct drm_driver *driver)
1da177e4 LT	263	{
	264	int retcode;
	265
bd1b331f	266	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	267	INIT_LIST_HEAD(&dev->ctxlist);
	268	INIT_LIST_HEAD(&dev->vmalist);
	269	INIT_LIST_HEAD(&dev->maplist);
c9a9c5e0	270	INIT_LIST_HEAD(&dev->vblank_event_list);
7c158ace	271
1da177e4	272	spin_lock_init(&dev->count_lock);
c9a9c5e0	273	spin_lock_init(&dev->event_lock);
30e2fb18 DA	274	mutex_init(&dev->struct_mutex);
30e2fb18 DA	275	mutex_init(&dev->ctxlist_mutex);
1da177e4	276
8d153f71	277	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	278	return -ENOMEM;
8d153f71 TH	279	}
836cf046	280
1da177e4 LT	281	/* the DRM has 6 basic counters */
1da177e4 LT	282	dev->counters = 6;
b5e89ed5 DA	283	dev->types[0] = _DRM_STAT_LOCK;
	284	dev->types[1] = _DRM_STAT_OPENS;
	285	dev->types[2] = _DRM_STAT_CLOSES;
	286	dev->types[3] = _DRM_STAT_IOCTLS;
	287	dev->types[4] = _DRM_STAT_LOCKS;
	288	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	289
1da177e4 LT	290	dev->driver = driver;
b5e89ed5	291
8410ea3b DA	292	if (dev->driver->bus->agp_init) {
	293	retcode = dev->driver->bus->agp_init(dev);
	294	if (retcode)
1da177e4	295	goto error_out_unreg;
1da177e4 LT	296	}
1da177e4 LT	297
2716a02f	298
8410ea3b	299
b5e89ed5 DA	300	retcode = drm_ctxbitmap_init(dev);
	301	if (retcode) {
	302	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	303	goto error_out_unreg;
	304	}
	305
673a394b EA	306	if (driver->driver_features & DRIVER_GEM) {
	307	retcode = drm_gem_init(dev);
	308	if (retcode) {
	309	DRM_ERROR("Cannot initialize graphics execution "
	310	"manager (GEM)\n");
	311	goto error_out_unreg;
	312	}
	313	}
	314
1da177e4	315	return 0;
b5e89ed5 DA	316
b5e89ed5 DA	317	error_out_unreg:
22eae947	318	drm_lastclose(dev);
1da177e4 LT	319	return retcode;
1da177e4 LT	320	}
9c1dfc55	321	EXPORT_SYMBOL(drm_fill_in_dev);
1da177e4	322
1da177e4	323
1da177e4 LT	324	/**
	325	* Get a secondary minor number.
	326	*
	327	* \param dev device data structure
	328	* \param sec-minor structure to hold the assigned minor
	329	* \return negative number on failure.
	330	*
	331	* Search an empty entry and initialize it to the given parameters, and
	332	* create the proc init entry via proc_init(). This routines assigns
	333	* minor numbers to secondary heads of multi-headed cards
	334	*/
dcdb1674	335	int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	336	{
2c14f28b	337	struct drm_minor *new_minor;
1da177e4	338	int ret;
2c14f28b	339	int minor_id;
1da177e4 LT	340
	341	DRM_DEBUG("\n");
	342
2c14f28b DA	343	minor_id = drm_minor_get_id(dev, type);
	344	if (minor_id < 0)
	345	return minor_id;
	346
	347	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	348	if (!new_minor) {
	349	ret = -ENOMEM;
	350	goto err_idr;
	351	}
	352
	353	new_minor->type = type;
	354	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	355	new_minor->dev = dev;
	356	new_minor->index = minor_id;
7c1c2871	357	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	358
	359	idr_replace(&drm_minors_idr, new_minor, minor_id);
	360
	361	if (type == DRM_MINOR_LEGACY) {
	362	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	363	if (ret) {
	364	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	365	goto err_mem;
1da177e4	366	}
2c14f28b	367	} else
955b12de BG	368	new_minor->proc_root = NULL;
	369
	370	#if defined(CONFIG_DEBUG_FS)
	371	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	372	if (ret) {
156f5a78	373	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
955b12de BG	374	goto err_g2;
	375	}
	376	#endif
2c14f28b DA	377
	378	ret = drm_sysfs_device_add(new_minor);
	379	if (ret) {
	380	printk(KERN_ERR
	381	"DRM: Error sysfs_device_add.\n");
	382	goto err_g2;
1da177e4	383	}
2c14f28b DA	384	*minor = new_minor;
	385
	386	DRM_DEBUG("new minor assigned %d\n", minor_id);
	387	return 0;
	388
	389
	390	err_g2:
	391	if (new_minor->type == DRM_MINOR_LEGACY)
	392	drm_proc_cleanup(new_minor, drm_proc_root);
	393	err_mem:
	394	kfree(new_minor);
	395	err_idr:
	396	idr_remove(&drm_minors_idr, minor_id);
	397	*minor = NULL;
1da177e4 LT	398	return ret;
1da177e4 LT	399	}
9c1dfc55	400	EXPORT_SYMBOL(drm_get_minor);
b5e89ed5	401
1da177e4 LT	402	/**
	403	* Put a secondary minor number.
	404	*
	405	* \param sec_minor - structure to be released
	406	* \return always zero
	407	*
	408	* Cleans up the proc resources. Not legal for this to be the
	409	* last minor released.
	410	*
	411	*/
2c14f28b	412	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	413	{
2c14f28b	414	struct drm_minor minor = minor_p;
673a394b	415
2c14f28b	416	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	417
2c14f28b DA	418	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	419	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	420	#if defined(CONFIG_DEBUG_FS)
	421	drm_debugfs_cleanup(minor);
	422	#endif
	423
2c14f28b	424	drm_sysfs_device_remove(minor);
1da177e4	425
2c14f28b	426	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	427
2c14f28b DA	428	kfree(minor);
2c14f28b DA	429	*minor_p = NULL;
1da177e4 LT	430	return 0;
1da177e4 LT	431	}
9c1dfc55	432	EXPORT_SYMBOL(drm_put_minor);
112b715e	433
2c07a21d DA	434	static void drm_unplug_minor(struct drm_minor *minor)
	435	{
	436	drm_sysfs_device_remove(minor);
	437	}
	438
112b715e KH	439	/**
	440	* Called via drm_exit() at module unload time or when pci device is
	441	* unplugged.
	442	*
	443	* Cleans up all DRM device, calling drm_lastclose().
	444	*
112b715e KH	445	*/
	446	void drm_put_dev(struct drm_device *dev)
	447	{
ecca0683	448	struct drm_driver *driver;
112b715e KH	449	struct drm_map_list r_list, list_temp;
	450
	451	DRM_DEBUG("\n");
	452
	453	if (!dev) {
	454	DRM_ERROR("cleanup called no dev\n");
	455	return;
	456	}
ecca0683	457	driver = dev->driver;
112b715e	458
112b715e KH	459	drm_lastclose(dev);
	460
	461	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	462	dev->agp && dev->agp->agp_mtrr >= 0) {
	463	int retval;
	464	retval = mtrr_del(dev->agp->agp_mtrr,
	465	dev->agp->agp_info.aper_base,
	466	dev->agp->agp_info.aper_size * 1024 * 1024);
	467	DRM_DEBUG("mtrr_del=%d\n", retval);
	468	}
	469
	470	if (dev->driver->unload)
	471	dev->driver->unload(dev);
	472
	473	if (drm_core_has_AGP(dev) && dev->agp) {
9a298b2a	474	kfree(dev->agp);
112b715e KH	475	dev->agp = NULL;
	476	}
	477
b78315f0 JB	478	drm_vblank_cleanup(dev);
b78315f0 JB	479
112b715e KH	480	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
112b715e KH	481	drm_rmmap(dev, r_list->map);
30ddbd94 BS	482	drm_ht_remove(&dev->map_hash);
	483
	484	drm_ctxbitmap_cleanup(dev);
112b715e KH	485
	486	if (drm_core_check_feature(dev, DRIVER_MODESET))
	487	drm_put_minor(&dev->control);
	488
	489	if (driver->driver_features & DRIVER_GEM)
	490	drm_gem_destroy(dev);
	491
	492	drm_put_minor(&dev->primary);
	493
a250b9fd	494	list_del(&dev->driver_item);
112b715e	495	if (dev->devname) {
9a298b2a	496	kfree(dev->devname);
112b715e KH	497	dev->devname = NULL;
112b715e KH	498	}
9a298b2a	499	kfree(dev);
112b715e KH	500	}
112b715e KH	501	EXPORT_SYMBOL(drm_put_dev);
2c07a21d DA	502
	503	void drm_unplug_dev(struct drm_device *dev)
	504	{
	505	/* for a USB device */
	506	if (drm_core_check_feature(dev, DRIVER_MODESET))
	507	drm_unplug_minor(dev->control);
	508	drm_unplug_minor(dev->primary);
	509
	510	mutex_lock(&drm_global_mutex);
	511
	512	drm_device_set_unplugged(dev);
	513
	514	if (dev->open_count == 0) {
	515	drm_put_dev(dev);
	516	}
	517	mutex_unlock(&drm_global_mutex);
	518	}
	519	EXPORT_SYMBOL(drm_unplug_dev);