[mirror_ubuntu-artful-kernel.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 "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;
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;
	}

	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 &&
	    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;
}

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);
	INIT_LIST_HEAD(&dev->vblank_event_list);

	spin_lock_init(&dev->count_lock);
	spin_lock_init(&dev->drw_lock);
	spin_lock_init(&dev->event_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 /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;
}

/**
 * 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 = kzalloc(sizeof(*dev), GFP_KERNEL);
	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_g4;
	}

        /* 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_g4;
	}

	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_g4:
	drm_put_minor(&dev->primary);
err_g3:
	if (drm_core_check_feature(dev, DRIVER_MODESET))
		drm_put_minor(&dev->control);
err_g2:
	pci_disable_device(pdev);
err_g1:
	kfree(dev);
	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;
	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_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) {
		kfree(dev->agp);
		dev->agp = NULL;
	}

	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);

	if (dev->devname) {
		kfree(dev->devname);
		dev->devname = NULL;
	}
	kfree(dev);
}
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>
5a0e3ad6	36	#include <linux/slab.h>
1da177e4 LT	37	#include "drmP.h"
	38	#include "drm_core.h"
	39
b5e89ed5	40	unsigned int drm_debug = 0; /* 1 to enable debug output */
1da177e4 LT	41	EXPORT_SYMBOL(drm_debug);
1da177e4 LT	42
b5e89ed5 DA	43	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	44	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	45	MODULE_LICENSE("GPL and additional rights");
1da177e4 LT	46	MODULE_PARM_DESC(debug, "Enable debug output");
1da177e4 LT	47
c0758146	48	module_param_named(debug, drm_debug, int, 0600);
1da177e4	49
2c14f28b DA	50	struct idr drm_minors_idr;
2c14f28b DA	51
0650fd58	52	struct class *drm_class;
1da177e4	53	struct proc_dir_entry *drm_proc_root;
955b12de	54	struct dentry *drm_debugfs_root;
4fefcb27	55	void drm_ut_debug_printk(unsigned int request_level,
	56	const char *prefix,
	57	const char *function_name,
	58	const char *format, ...)
	59	{
	60	va_list args;
1da177e4	61
4fefcb27	62	if (drm_debug & request_level) {
	63	if (function_name)
	64	printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
	65	va_start(args, format);
	66	vprintk(format, args);
	67	va_end(args);
	68	}
	69	}
	70	EXPORT_SYMBOL(drm_ut_debug_printk);
2c14f28b DA	71	static int drm_minor_get_id(struct drm_device *dev, int type)
	72	{
	73	int new_id;
	74	int ret;
	75	int base = 0, limit = 63;
	76
f453ba04 DA	77	if (type == DRM_MINOR_CONTROL) {
	78	base += 64;
	79	limit = base + 127;
	80	} else if (type == DRM_MINOR_RENDER) {
	81	base += 128;
	82	limit = base + 255;
	83	}
	84
2c14f28b DA	85	again:
	86	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	87	DRM_ERROR("Out of memory expanding drawable idr\n");
	88	return -ENOMEM;
	89	}
	90	mutex_lock(&dev->struct_mutex);
	91	ret = idr_get_new_above(&drm_minors_idr, NULL,
	92	base, &new_id);
	93	mutex_unlock(&dev->struct_mutex);
	94	if (ret == -EAGAIN) {
	95	goto again;
	96	} else if (ret) {
	97	return ret;
	98	}
	99
	100	if (new_id >= limit) {
	101	idr_remove(&drm_minors_idr, new_id);
	102	return -EINVAL;
	103	}
	104	return new_id;
	105	}
	106
7c1c2871 DA	107	struct drm_master drm_master_create(struct drm_minor minor)
	108	{
	109	struct drm_master *master;
	110
9a298b2a	111	master = kzalloc(sizeof(*master), GFP_KERNEL);
7c1c2871 DA	112	if (!master)
	113	return NULL;
	114
	115	kref_init(&master->refcount);
	116	spin_lock_init(&master->lock.spinlock);
	117	init_waitqueue_head(&master->lock.lock_queue);
	118	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	119	INIT_LIST_HEAD(&master->magicfree);
	120	master->minor = minor;
	121
	122	list_add_tail(&master->head, &minor->master_list);
	123
	124	return master;
	125	}
	126
	127	struct drm_master drm_master_get(struct drm_master master)
	128	{
	129	kref_get(&master->refcount);
	130	return master;
	131	}
85bb0c37	132	EXPORT_SYMBOL(drm_master_get);
7c1c2871 DA	133
	134	static void drm_master_destroy(struct kref *kref)
	135	{
	136	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	137	struct drm_magic_entry pt, next;
	138	struct drm_device *dev = master->minor->dev;
c1ff85d9	139	struct drm_map_list r_list, list_temp;
7c1c2871 DA	140
	141	list_del(&master->head);
	142
	143	if (dev->driver->master_destroy)
	144	dev->driver->master_destroy(dev, master);
	145
c1ff85d9 DA	146	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	147	if (r_list->master == master) {
	148	drm_rmmap_locked(dev, r_list->map);
	149	r_list = NULL;
	150	}
	151	}
	152
7c1c2871	153	if (master->unique) {
9a298b2a	154	kfree(master->unique);
7c1c2871 DA	155	master->unique = NULL;
	156	master->unique_len = 0;
	157	}
	158
	159	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	160	list_del(&pt->head);
	161	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
9a298b2a	162	kfree(pt);
7c1c2871 DA	163	}
	164
	165	drm_ht_remove(&master->magiclist);
	166
9a298b2a	167	kfree(master);
7c1c2871 DA	168	}
	169
	170	void drm_master_put(struct drm_master **master)
	171	{
	172	kref_put(&(*master)->refcount, drm_master_destroy);
	173	*master = NULL;
	174	}
85bb0c37	175	EXPORT_SYMBOL(drm_master_put);
7c1c2871 DA	176
	177	int drm_setmaster_ioctl(struct drm_device dev, void data,
	178	struct drm_file *file_priv)
	179	{
862302ff TH	180	int ret = 0;
862302ff TH	181
6b008426 JB	182	if (file_priv->is_master)
	183	return 0;
	184
7c1c2871 DA	185	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	186	return -EINVAL;
	187
	188	if (!file_priv->master)
	189	return -EINVAL;
	190
	191	if (!file_priv->minor->master &&
	192	file_priv->minor->master != file_priv->master) {
	193	mutex_lock(&dev->struct_mutex);
	194	file_priv->minor->master = drm_master_get(file_priv->master);
6b008426	195	file_priv->is_master = 1;
862302ff TH	196	if (dev->driver->master_set) {
	197	ret = dev->driver->master_set(dev, file_priv, false);
	198	if (unlikely(ret != 0)) {
	199	file_priv->is_master = 0;
	200	drm_master_put(&file_priv->minor->master);
	201	}
	202	}
5ad8b7d1	203	mutex_unlock(&dev->struct_mutex);
7c1c2871 DA	204	}
	205
	206	return 0;
	207	}
	208
	209	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	210	struct drm_file *file_priv)
	211	{
6b008426	212	if (!file_priv->is_master)
7c1c2871	213	return -EINVAL;
6b008426	214
07f1c7a7 DA	215	if (!file_priv->minor->master)
	216	return -EINVAL;
	217
7c1c2871	218	mutex_lock(&dev->struct_mutex);
862302ff TH	219	if (dev->driver->master_drop)
862302ff TH	220	dev->driver->master_drop(dev, file_priv, false);
7c1c2871	221	drm_master_put(&file_priv->minor->master);
6b008426	222	file_priv->is_master = 0;
7c1c2871 DA	223	mutex_unlock(&dev->struct_mutex);
	224	return 0;
	225	}
	226
84b1fd10	227	static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
b5e89ed5 DA	228	const struct pci_device_id *ent,
b5e89ed5 DA	229	struct drm_driver *driver)
1da177e4 LT	230	{
	231	int retcode;
	232
bd1b331f	233	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	234	INIT_LIST_HEAD(&dev->ctxlist);
	235	INIT_LIST_HEAD(&dev->vmalist);
	236	INIT_LIST_HEAD(&dev->maplist);
c9a9c5e0	237	INIT_LIST_HEAD(&dev->vblank_event_list);
7c158ace	238
1da177e4	239	spin_lock_init(&dev->count_lock);
bea5679f	240	spin_lock_init(&dev->drw_lock);
c9a9c5e0	241	spin_lock_init(&dev->event_lock);
b5e89ed5	242	init_timer(&dev->timer);
30e2fb18 DA	243	mutex_init(&dev->struct_mutex);
30e2fb18 DA	244	mutex_init(&dev->ctxlist_mutex);
1da177e4	245
45ea5dcd DA	246	idr_init(&dev->drw_idr);
45ea5dcd DA	247
b5e89ed5	248	dev->pdev = pdev;
2f02cc3f EA	249	dev->pci_device = pdev->device;
2f02cc3f EA	250	dev->pci_vendor = pdev->vendor;
1da177e4 LT	251
1da177e4 LT	252	#ifdef __alpha__
b5e89ed5	253	dev->hose = pdev->sysdata;
1da177e4	254	#endif
1da177e4	255
8d153f71	256	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	257	return -ENOMEM;
8d153f71 TH	258	}
836cf046	259
1da177e4 LT	260	/* the DRM has 6 basic counters */
1da177e4 LT	261	dev->counters = 6;
b5e89ed5 DA	262	dev->types[0] = _DRM_STAT_LOCK;
	263	dev->types[1] = _DRM_STAT_OPENS;
	264	dev->types[2] = _DRM_STAT_CLOSES;
	265	dev->types[3] = _DRM_STAT_IOCTLS;
	266	dev->types[4] = _DRM_STAT_LOCKS;
	267	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	268
1da177e4 LT	269	dev->driver = driver;
b5e89ed5	270
1da177e4	271	if (drm_core_has_AGP(dev)) {
cda17380 DA	272	if (drm_device_is_agp(dev))
cda17380 DA	273	dev->agp = drm_agp_init(dev);
b5e89ed5 DA	274	if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
	275	&& (dev->agp == NULL)) {
	276	DRM_ERROR("Cannot initialize the agpgart module.\n");
1da177e4 LT	277	retcode = -EINVAL;
	278	goto error_out_unreg;
	279	}
	280	if (drm_core_has_MTRR(dev)) {
	281	if (dev->agp)
b5e89ed5 DA	282	dev->agp->agp_mtrr =
	283	mtrr_add(dev->agp->agp_info.aper_base,
	284	dev->agp->agp_info.aper_size *
	285	1024 * 1024, MTRR_TYPE_WRCOMB, 1);
1da177e4 LT	286	}
	287	}
	288
2716a02f	289
b5e89ed5 DA	290	retcode = drm_ctxbitmap_init(dev);
	291	if (retcode) {
	292	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	293	goto error_out_unreg;
	294	}
	295
673a394b EA	296	if (driver->driver_features & DRIVER_GEM) {
	297	retcode = drm_gem_init(dev);
	298	if (retcode) {
	299	DRM_ERROR("Cannot initialize graphics execution "
	300	"manager (GEM)\n");
	301	goto error_out_unreg;
	302	}
	303	}
	304
1da177e4	305	return 0;
b5e89ed5 DA	306
b5e89ed5 DA	307	error_out_unreg:
22eae947	308	drm_lastclose(dev);
1da177e4 LT	309	return retcode;
	310	}
	311
1da177e4	312
1da177e4 LT	313	/**
	314	* Get a secondary minor number.
	315	*
	316	* \param dev device data structure
	317	* \param sec-minor structure to hold the assigned minor
	318	* \return negative number on failure.
	319	*
	320	* Search an empty entry and initialize it to the given parameters, and
	321	* create the proc init entry via proc_init(). This routines assigns
	322	* minor numbers to secondary heads of multi-headed cards
	323	*/
2c14f28b	324	static int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	325	{
2c14f28b	326	struct drm_minor *new_minor;
1da177e4	327	int ret;
2c14f28b	328	int minor_id;
1da177e4 LT	329
	330	DRM_DEBUG("\n");
	331
2c14f28b DA	332	minor_id = drm_minor_get_id(dev, type);
	333	if (minor_id < 0)
	334	return minor_id;
	335
	336	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	337	if (!new_minor) {
	338	ret = -ENOMEM;
	339	goto err_idr;
	340	}
	341
	342	new_minor->type = type;
	343	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	344	new_minor->dev = dev;
	345	new_minor->index = minor_id;
7c1c2871	346	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	347
	348	idr_replace(&drm_minors_idr, new_minor, minor_id);
	349
	350	if (type == DRM_MINOR_LEGACY) {
	351	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	352	if (ret) {
	353	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	354	goto err_mem;
1da177e4	355	}
2c14f28b	356	} else
955b12de BG	357	new_minor->proc_root = NULL;
	358
	359	#if defined(CONFIG_DEBUG_FS)
	360	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	361	if (ret) {
156f5a78	362	DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
955b12de BG	363	goto err_g2;
	364	}
	365	#endif
2c14f28b DA	366
	367	ret = drm_sysfs_device_add(new_minor);
	368	if (ret) {
	369	printk(KERN_ERR
	370	"DRM: Error sysfs_device_add.\n");
	371	goto err_g2;
1da177e4	372	}
2c14f28b DA	373	*minor = new_minor;
	374
	375	DRM_DEBUG("new minor assigned %d\n", minor_id);
	376	return 0;
	377
	378
	379	err_g2:
	380	if (new_minor->type == DRM_MINOR_LEGACY)
	381	drm_proc_cleanup(new_minor, drm_proc_root);
	382	err_mem:
	383	kfree(new_minor);
	384	err_idr:
	385	idr_remove(&drm_minors_idr, minor_id);
	386	*minor = NULL;
1da177e4 LT	387	return ret;
1da177e4 LT	388	}
b5e89ed5	389
c94f7029 DA	390	/**
	391	* Register.
	392	*
	393	* \param pdev - PCI device structure
	394	* \param ent entry from the PCI ID table with device type flags
	395	* \return zero on success or a negative number on failure.
	396	*
	397	* Attempt to gets inter module "drm" information. If we are first
	398	* then register the character device and inter module information.
	399	* Try and register, if we fail to register, backout previous work.
	400	*/
	401	int drm_get_dev(struct pci_dev pdev, const struct pci_device_id ent,
b5e89ed5	402	struct drm_driver *driver)
c94f7029	403	{
84b1fd10	404	struct drm_device *dev;
c94f7029 DA	405	int ret;
	406
	407	DRM_DEBUG("\n");
	408
9a298b2a	409	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
c94f7029 DA	410	if (!dev)
	411	return -ENOMEM;
	412
2c3f0edd JG	413	ret = pci_enable_device(pdev);
	414	if (ret)
	415	goto err_g1;
c94f7029	416
19a8f59a	417	pci_set_master(pdev);
c94f7029 DA	418	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
c94f7029 DA	419	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
2c3f0edd	420	goto err_g2;
c94f7029	421	}
f453ba04 DA	422
f453ba04 DA	423	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
112b715e	424	pci_set_drvdata(pdev, dev);
f453ba04 DA	425	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	426	if (ret)
	427	goto err_g2;
	428	}
	429
2c14f28b	430	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
f453ba04	431	goto err_g3;
bc5f4523	432
f453ba04 DA	433	if (dev->driver->load) {
	434	ret = dev->driver->load(dev, ent->driver_data);
	435	if (ret)
3788f48a	436	goto err_g4;
f453ba04 DA	437	}
	438
	439	/* setup the grouping for the legacy output */
	440	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	441	ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
	442	if (ret)
3788f48a	443	goto err_g4;
f453ba04	444	}
a9d51a5a	445
e7f7ab45 DA	446	list_add_tail(&dev->driver_item, &driver->device_list);
e7f7ab45 DA	447
cd00f95a	448	DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
22eae947	449	driver->name, driver->major, driver->minor, driver->patchlevel,
cd00f95a	450	driver->date, pci_name(pdev), dev->primary->index);
c94f7029 DA	451
	452	return 0;
	453
3788f48a	454	err_g4:
a9d51a5a	455	drm_put_minor(&dev->primary);
3788f48a BS	456	err_g3:
	457	if (drm_core_check_feature(dev, DRIVER_MODESET))
	458	drm_put_minor(&dev->control);
2c3f0edd JG	459	err_g2:
	460	pci_disable_device(pdev);
	461	err_g1:
9a298b2a	462	kfree(dev);
c94f7029 DA	463	return ret;
c94f7029 DA	464	}
112b715e	465	EXPORT_SYMBOL(drm_get_dev);
1da177e4 LT	466
	467	/**
	468	* Put a secondary minor number.
	469	*
	470	* \param sec_minor - structure to be released
	471	* \return always zero
	472	*
	473	* Cleans up the proc resources. Not legal for this to be the
	474	* last minor released.
	475	*
	476	*/
2c14f28b	477	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	478	{
2c14f28b	479	struct drm_minor minor = minor_p;
673a394b	480
2c14f28b	481	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	482
2c14f28b DA	483	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	484	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	485	#if defined(CONFIG_DEBUG_FS)
	486	drm_debugfs_cleanup(minor);
	487	#endif
	488
2c14f28b	489	drm_sysfs_device_remove(minor);
1da177e4	490
2c14f28b	491	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	492
2c14f28b DA	493	kfree(minor);
2c14f28b DA	494	*minor_p = NULL;
1da177e4 LT	495	return 0;
1da177e4 LT	496	}
112b715e KH	497
	498	/**
	499	* Called via drm_exit() at module unload time or when pci device is
	500	* unplugged.
	501	*
	502	* Cleans up all DRM device, calling drm_lastclose().
	503	*
	504	* \sa drm_init
	505	*/
	506	void drm_put_dev(struct drm_device *dev)
	507	{
ecca0683	508	struct drm_driver *driver;
112b715e KH	509	struct drm_map_list r_list, list_temp;
	510
	511	DRM_DEBUG("\n");
	512
	513	if (!dev) {
	514	DRM_ERROR("cleanup called no dev\n");
	515	return;
	516	}
ecca0683	517	driver = dev->driver;
112b715e KH	518
	519	drm_vblank_cleanup(dev);
	520
	521	drm_lastclose(dev);
	522
	523	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	524	dev->agp && dev->agp->agp_mtrr >= 0) {
	525	int retval;
	526	retval = mtrr_del(dev->agp->agp_mtrr,
	527	dev->agp->agp_info.aper_base,
	528	dev->agp->agp_info.aper_size * 1024 * 1024);
	529	DRM_DEBUG("mtrr_del=%d\n", retval);
	530	}
	531
	532	if (dev->driver->unload)
	533	dev->driver->unload(dev);
	534
	535	if (drm_core_has_AGP(dev) && dev->agp) {
9a298b2a	536	kfree(dev->agp);
112b715e KH	537	dev->agp = NULL;
	538	}
	539
112b715e KH	540	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
112b715e KH	541	drm_rmmap(dev, r_list->map);
30ddbd94 BS	542	drm_ht_remove(&dev->map_hash);
	543
	544	drm_ctxbitmap_cleanup(dev);
112b715e KH	545
	546	if (drm_core_check_feature(dev, DRIVER_MODESET))
	547	drm_put_minor(&dev->control);
	548
	549	if (driver->driver_features & DRIVER_GEM)
	550	drm_gem_destroy(dev);
	551
	552	drm_put_minor(&dev->primary);
	553
	554	if (dev->devname) {
9a298b2a	555	kfree(dev->devname);
112b715e KH	556	dev->devname = NULL;
112b715e KH	557	}
9a298b2a	558	kfree(dev);
112b715e KH	559	}
112b715e KH	560	EXPORT_SYMBOL(drm_put_dev);