[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 "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 = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
	if (!master)
		return NULL;

	kref_init(&master->refcount);
	spin_lock_init(&master->lock.spinlock);
	init_waitqueue_head(&master->lock.lock_queue);
	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	INIT_LIST_HEAD(&master->magicfree);
	master->minor = minor;

	list_add_tail(&master->head, &minor->master_list);

	return master;
}

struct drm_master *drm_master_get(struct drm_master *master)
{
	kref_get(&master->refcount);
	return master;
}

static void drm_master_destroy(struct kref *kref)
{
	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	struct drm_magic_entry *pt, *next;
	struct drm_device *dev = master->minor->dev;
	struct drm_map_list *r_list, *list_temp;

	list_del(&master->head);

	if (dev->driver->master_destroy)
		dev->driver->master_destroy(dev, master);

	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
		if (r_list->master == master) {
			drm_rmmap_locked(dev, r_list->map);
			r_list = NULL;
		}
	}

	if (master->unique) {
		drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
		master->unique = NULL;
		master->unique_len = 0;
	}

	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
		list_del(&pt->head);
		drm_ht_remove_item(&master->magiclist, &pt->hash_item);
		drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
	}

	drm_ht_remove(&master->magiclist);

	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
}

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

int drm_setmaster_ioctl(struct drm_device *dev, void *data,
			struct drm_file *file_priv)
{
	if (file_priv->is_master)
		return 0;

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

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

	if (!file_priv->minor->master &&
	    file_priv->minor->master != file_priv->master) {
		mutex_lock(&dev->struct_mutex);
		file_priv->minor->master = drm_master_get(file_priv->master);
		file_priv->is_master = 1;
		mutex_unlock(&dev->struct_mutex);
	}

	return 0;
}

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

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

	mutex_lock(&dev->struct_mutex);
	drm_master_put(&file_priv->minor->master);
	file_priv->is_master = 0;
	mutex_unlock(&dev->struct_mutex);
	return 0;
}

static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver)
{
	int retcode;

	INIT_LIST_HEAD(&dev->filelist);
	INIT_LIST_HEAD(&dev->ctxlist);
	INIT_LIST_HEAD(&dev->vmalist);
	INIT_LIST_HEAD(&dev->maplist);

	spin_lock_init(&dev->count_lock);
	spin_lock_init(&dev->drw_lock);
	init_timer(&dev->timer);
	mutex_init(&dev->struct_mutex);
	mutex_init(&dev->ctxlist_mutex);

	idr_init(&dev->drw_idr);

	dev->pdev = pdev;
	dev->pci_device = pdev->device;
	dev->pci_vendor = pdev->vendor;

#ifdef __alpha__
	dev->hose = pdev->sysdata;
#endif

	if (drm_ht_create(&dev->map_hash, 12)) {
		return -ENOMEM;
	}

	/* the DRM has 6 basic counters */
	dev->counters = 6;
	dev->types[0] = _DRM_STAT_LOCK;
	dev->types[1] = _DRM_STAT_OPENS;
	dev->types[2] = _DRM_STAT_CLOSES;
	dev->types[3] = _DRM_STAT_IOCTLS;
	dev->types[4] = _DRM_STAT_LOCKS;
	dev->types[5] = _DRM_STAT_UNLOCKS;

	dev->driver = driver;

	if (drm_core_has_AGP(dev)) {
		if (drm_device_is_agp(dev))
			dev->agp = drm_agp_init(dev);
		if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
		    && (dev->agp == NULL)) {
			DRM_ERROR("Cannot initialize the agpgart module.\n");
			retcode = -EINVAL;
			goto error_out_unreg;
		}
		if (drm_core_has_MTRR(dev)) {
			if (dev->agp)
				dev->agp->agp_mtrr =
				    mtrr_add(dev->agp->agp_info.aper_base,
					     dev->agp->agp_info.aper_size *
					     1024 * 1024, MTRR_TYPE_WRCOMB, 1);
		}
	}


	retcode = drm_ctxbitmap_init(dev);
	if (retcode) {
		DRM_ERROR("Cannot allocate memory for context bitmap.\n");
		goto error_out_unreg;
	}

	if (driver->driver_features & DRIVER_GEM) {
		retcode = drm_gem_init(dev);
		if (retcode) {
			DRM_ERROR("Cannot initialize graphics execution "
				  "manager (GEM)\n");
			goto error_out_unreg;
		}
	}

	return 0;

      error_out_unreg:
	drm_lastclose(dev);
	return retcode;
}


/**
 * Get a secondary minor number.
 *
 * \param dev device data structure
 * \param sec-minor structure to hold the assigned minor
 * \return negative number on failure.
 *
 * Search an empty entry and initialize it to the given parameters, and
 * create the proc init entry via proc_init(). This routines assigns
 * minor numbers to secondary heads of multi-headed cards
 */
static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
{
	struct drm_minor *new_minor;
	int ret;
	int minor_id;

	DRM_DEBUG("\n");

	minor_id = drm_minor_get_id(dev, type);
	if (minor_id < 0)
		return minor_id;

	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	if (!new_minor) {
		ret = -ENOMEM;
		goto err_idr;
	}

	new_minor->type = type;
	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	new_minor->dev = dev;
	new_minor->index = minor_id;
	INIT_LIST_HEAD(&new_minor->master_list);

	idr_replace(&drm_minors_idr, new_minor, minor_id);

	if (type == DRM_MINOR_LEGACY) {
		ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
		if (ret) {
			DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
			goto err_mem;
		}
	} else
		new_minor->proc_root = NULL;

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

	ret = drm_sysfs_device_add(new_minor);
	if (ret) {
		printk(KERN_ERR
		       "DRM: Error sysfs_device_add.\n");
		goto err_g2;
	}
	*minor = new_minor;

	DRM_DEBUG("new minor assigned %d\n", minor_id);
	return 0;


err_g2:
	if (new_minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(new_minor, drm_proc_root);
err_mem:
	kfree(new_minor);
err_idr:
	idr_remove(&drm_minors_idr, minor_id);
	*minor = NULL;
	return ret;
}

/**
 * Register.
 *
 * \param pdev - PCI device structure
 * \param ent entry from the PCI ID table with device type flags
 * \return zero on success or a negative number on failure.
 *
 * Attempt to gets inter module "drm" information. If we are first
 * then register the character device and inter module information.
 * Try and register, if we fail to register, backout previous work.
 */
int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
		struct drm_driver *driver)
{
	struct drm_device *dev;
	int ret;

	DRM_DEBUG("\n");

	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	if (!dev)
		return -ENOMEM;

	ret = pci_enable_device(pdev);
	if (ret)
		goto err_g1;

	pci_set_master(pdev);
	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
		goto err_g2;
	}

	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		pci_set_drvdata(pdev, dev);
		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
		if (ret)
			goto err_g2;
	}

	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
		goto err_g3;

	if (dev->driver->load) {
		ret = dev->driver->load(dev, ent->driver_data);
		if (ret)
			goto err_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:
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	return ret;
}
EXPORT_SYMBOL(drm_get_dev);

/**
 * Put a secondary minor number.
 *
 * \param sec_minor - structure to be released
 * \return always zero
 *
 * Cleans up the proc resources. Not legal for this to be the
 * last minor released.
 *
 */
int drm_put_minor(struct drm_minor **minor_p)
{
	struct drm_minor *minor = *minor_p;

	DRM_DEBUG("release secondary minor %d\n", minor->index);

	if (minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(minor, drm_proc_root);
#if defined(CONFIG_DEBUG_FS)
	drm_debugfs_cleanup(minor);
#endif

	drm_sysfs_device_remove(minor);

	idr_remove(&drm_minors_idr, minor->index);

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

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

	DRM_DEBUG("\n");

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

	drm_vblank_cleanup(dev);

	drm_lastclose(dev);

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

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

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

	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) {
		drm_free(dev->devname, strlen(dev->devname) + 1,
			 DRM_MEM_DRIVER);
		dev->devname = NULL;
	}
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
}
EXPORT_SYMBOL(drm_put_dev);
Commit	Line	Data
1da177e4 LT	1	/**
	2	* \file drm_stub.h
	3	* Stub support
	4	*
	5	* \author Rickard E. (Rik) Faith <faith@valinux.com>
	6	*/
	7
	8	/*
	9	* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
	10	*
	11	* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
	12	* All Rights Reserved.
	13	*
	14	* Permission is hereby granted, free of charge, to any person obtaining a
	15	* copy of this software and associated documentation files (the "Software"),
	16	* to deal in the Software without restriction, including without limitation
	17	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	18	* and/or sell copies of the Software, and to permit persons to whom the
	19	* Software is furnished to do so, subject to the following conditions:
	20	*
	21	* The above copyright notice and this permission notice (including the next
	22	* paragraph) shall be included in all copies or substantial portions of the
	23	* Software.
	24	*
	25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	26	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	27	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	28	* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	29	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	30	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	31	* DEALINGS IN THE SOFTWARE.
	32	*/
	33
	34	#include <linux/module.h>
	35	#include <linux/moduleparam.h>
	36	#include "drmP.h"
	37	#include "drm_core.h"
	38
b5e89ed5	39	unsigned int drm_debug = 0; /* 1 to enable debug output */
1da177e4 LT	40	EXPORT_SYMBOL(drm_debug);
1da177e4 LT	41
b5e89ed5 DA	42	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	43	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	44	MODULE_LICENSE("GPL and additional rights");
1da177e4 LT	45	MODULE_PARM_DESC(debug, "Enable debug output");
1da177e4 LT	46
c0758146	47	module_param_named(debug, drm_debug, int, 0600);
1da177e4	48
2c14f28b DA	49	struct idr drm_minors_idr;
2c14f28b DA	50
0650fd58	51	struct class *drm_class;
1da177e4	52	struct proc_dir_entry *drm_proc_root;
955b12de	53	struct dentry *drm_debugfs_root;
4fefcb27	54	void drm_ut_debug_printk(unsigned int request_level,
	55	const char *prefix,
	56	const char *function_name,
	57	const char *format, ...)
	58	{
	59	va_list args;
1da177e4	60
4fefcb27	61	if (drm_debug & request_level) {
	62	if (function_name)
	63	printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
	64	va_start(args, format);
	65	vprintk(format, args);
	66	va_end(args);
	67	}
	68	}
	69	EXPORT_SYMBOL(drm_ut_debug_printk);
2c14f28b DA	70	static int drm_minor_get_id(struct drm_device *dev, int type)
	71	{
	72	int new_id;
	73	int ret;
	74	int base = 0, limit = 63;
	75
f453ba04 DA	76	if (type == DRM_MINOR_CONTROL) {
	77	base += 64;
	78	limit = base + 127;
	79	} else if (type == DRM_MINOR_RENDER) {
	80	base += 128;
	81	limit = base + 255;
	82	}
	83
2c14f28b DA	84	again:
	85	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	86	DRM_ERROR("Out of memory expanding drawable idr\n");
	87	return -ENOMEM;
	88	}
	89	mutex_lock(&dev->struct_mutex);
	90	ret = idr_get_new_above(&drm_minors_idr, NULL,
	91	base, &new_id);
	92	mutex_unlock(&dev->struct_mutex);
	93	if (ret == -EAGAIN) {
	94	goto again;
	95	} else if (ret) {
	96	return ret;
	97	}
	98
	99	if (new_id >= limit) {
	100	idr_remove(&drm_minors_idr, new_id);
	101	return -EINVAL;
	102	}
	103	return new_id;
	104	}
	105
7c1c2871 DA	106	struct drm_master drm_master_create(struct drm_minor minor)
	107	{
	108	struct drm_master *master;
	109
	110	master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
	111	if (!master)
	112	return NULL;
	113
	114	kref_init(&master->refcount);
	115	spin_lock_init(&master->lock.spinlock);
	116	init_waitqueue_head(&master->lock.lock_queue);
	117	drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
	118	INIT_LIST_HEAD(&master->magicfree);
	119	master->minor = minor;
	120
	121	list_add_tail(&master->head, &minor->master_list);
	122
	123	return master;
	124	}
	125
	126	struct drm_master drm_master_get(struct drm_master master)
	127	{
	128	kref_get(&master->refcount);
	129	return master;
	130	}
	131
	132	static void drm_master_destroy(struct kref *kref)
	133	{
	134	struct drm_master *master = container_of(kref, struct drm_master, refcount);
	135	struct drm_magic_entry pt, next;
	136	struct drm_device *dev = master->minor->dev;
c1ff85d9	137	struct drm_map_list r_list, list_temp;
7c1c2871 DA	138
	139	list_del(&master->head);
	140
	141	if (dev->driver->master_destroy)
	142	dev->driver->master_destroy(dev, master);
	143
c1ff85d9 DA	144	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
	145	if (r_list->master == master) {
	146	drm_rmmap_locked(dev, r_list->map);
	147	r_list = NULL;
	148	}
	149	}
	150
7c1c2871	151	if (master->unique) {
1147c9cd	152	drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
7c1c2871 DA	153	master->unique = NULL;
	154	master->unique_len = 0;
	155	}
	156
	157	list_for_each_entry_safe(pt, next, &master->magicfree, head) {
	158	list_del(&pt->head);
	159	drm_ht_remove_item(&master->magiclist, &pt->hash_item);
	160	drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
	161	}
	162
	163	drm_ht_remove(&master->magiclist);
	164
7c1c2871 DA	165	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
	166	}
	167
	168	void drm_master_put(struct drm_master **master)
	169	{
	170	kref_put(&(*master)->refcount, drm_master_destroy);
	171	*master = NULL;
	172	}
	173
	174	int drm_setmaster_ioctl(struct drm_device dev, void data,
	175	struct drm_file *file_priv)
	176	{
6b008426 JB	177	if (file_priv->is_master)
	178	return 0;
	179
7c1c2871 DA	180	if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
	181	return -EINVAL;
	182
	183	if (!file_priv->master)
	184	return -EINVAL;
	185
	186	if (!file_priv->minor->master &&
	187	file_priv->minor->master != file_priv->master) {
	188	mutex_lock(&dev->struct_mutex);
	189	file_priv->minor->master = drm_master_get(file_priv->master);
6b008426	190	file_priv->is_master = 1;
5ad8b7d1	191	mutex_unlock(&dev->struct_mutex);
7c1c2871 DA	192	}
	193
	194	return 0;
	195	}
	196
	197	int drm_dropmaster_ioctl(struct drm_device dev, void data,
	198	struct drm_file *file_priv)
	199	{
6b008426	200	if (!file_priv->is_master)
7c1c2871	201	return -EINVAL;
6b008426	202
07f1c7a7 DA	203	if (!file_priv->minor->master)
	204	return -EINVAL;
	205
7c1c2871 DA	206	mutex_lock(&dev->struct_mutex);
7c1c2871 DA	207	drm_master_put(&file_priv->minor->master);
6b008426	208	file_priv->is_master = 0;
7c1c2871 DA	209	mutex_unlock(&dev->struct_mutex);
	210	return 0;
	211	}
	212
84b1fd10	213	static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
b5e89ed5 DA	214	const struct pci_device_id *ent,
b5e89ed5 DA	215	struct drm_driver *driver)
1da177e4 LT	216	{
	217	int retcode;
	218
bd1b331f	219	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	220	INIT_LIST_HEAD(&dev->ctxlist);
	221	INIT_LIST_HEAD(&dev->vmalist);
	222	INIT_LIST_HEAD(&dev->maplist);
	223
1da177e4	224	spin_lock_init(&dev->count_lock);
bea5679f	225	spin_lock_init(&dev->drw_lock);
b5e89ed5	226	init_timer(&dev->timer);
30e2fb18 DA	227	mutex_init(&dev->struct_mutex);
30e2fb18 DA	228	mutex_init(&dev->ctxlist_mutex);
1da177e4	229
45ea5dcd DA	230	idr_init(&dev->drw_idr);
45ea5dcd DA	231
b5e89ed5	232	dev->pdev = pdev;
2f02cc3f EA	233	dev->pci_device = pdev->device;
2f02cc3f EA	234	dev->pci_vendor = pdev->vendor;
1da177e4 LT	235
1da177e4 LT	236	#ifdef __alpha__
b5e89ed5	237	dev->hose = pdev->sysdata;
1da177e4	238	#endif
1da177e4	239
8d153f71	240	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	241	return -ENOMEM;
8d153f71 TH	242	}
836cf046	243
1da177e4 LT	244	/* the DRM has 6 basic counters */
1da177e4 LT	245	dev->counters = 6;
b5e89ed5 DA	246	dev->types[0] = _DRM_STAT_LOCK;
	247	dev->types[1] = _DRM_STAT_OPENS;
	248	dev->types[2] = _DRM_STAT_CLOSES;
	249	dev->types[3] = _DRM_STAT_IOCTLS;
	250	dev->types[4] = _DRM_STAT_LOCKS;
	251	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	252
1da177e4 LT	253	dev->driver = driver;
b5e89ed5	254
1da177e4	255	if (drm_core_has_AGP(dev)) {
cda17380 DA	256	if (drm_device_is_agp(dev))
cda17380 DA	257	dev->agp = drm_agp_init(dev);
b5e89ed5 DA	258	if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
	259	&& (dev->agp == NULL)) {
	260	DRM_ERROR("Cannot initialize the agpgart module.\n");
1da177e4 LT	261	retcode = -EINVAL;
	262	goto error_out_unreg;
	263	}
	264	if (drm_core_has_MTRR(dev)) {
	265	if (dev->agp)
b5e89ed5 DA	266	dev->agp->agp_mtrr =
	267	mtrr_add(dev->agp->agp_info.aper_base,
	268	dev->agp->agp_info.aper_size *
	269	1024 * 1024, MTRR_TYPE_WRCOMB, 1);
1da177e4 LT	270	}
	271	}
	272
2716a02f	273
b5e89ed5 DA	274	retcode = drm_ctxbitmap_init(dev);
	275	if (retcode) {
	276	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	277	goto error_out_unreg;
	278	}
	279
673a394b EA	280	if (driver->driver_features & DRIVER_GEM) {
	281	retcode = drm_gem_init(dev);
	282	if (retcode) {
	283	DRM_ERROR("Cannot initialize graphics execution "
	284	"manager (GEM)\n");
	285	goto error_out_unreg;
	286	}
	287	}
	288
1da177e4	289	return 0;
b5e89ed5 DA	290
b5e89ed5 DA	291	error_out_unreg:
22eae947	292	drm_lastclose(dev);
1da177e4 LT	293	return retcode;
	294	}
	295
1da177e4	296
1da177e4 LT	297	/**
	298	* Get a secondary minor number.
	299	*
	300	* \param dev device data structure
	301	* \param sec-minor structure to hold the assigned minor
	302	* \return negative number on failure.
	303	*
	304	* Search an empty entry and initialize it to the given parameters, and
	305	* create the proc init entry via proc_init(). This routines assigns
	306	* minor numbers to secondary heads of multi-headed cards
	307	*/
2c14f28b	308	static int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	309	{
2c14f28b	310	struct drm_minor *new_minor;
1da177e4	311	int ret;
2c14f28b	312	int minor_id;
1da177e4 LT	313
	314	DRM_DEBUG("\n");
	315
2c14f28b DA	316	minor_id = drm_minor_get_id(dev, type);
	317	if (minor_id < 0)
	318	return minor_id;
	319
	320	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	321	if (!new_minor) {
	322	ret = -ENOMEM;
	323	goto err_idr;
	324	}
	325
	326	new_minor->type = type;
	327	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	328	new_minor->dev = dev;
	329	new_minor->index = minor_id;
7c1c2871	330	INIT_LIST_HEAD(&new_minor->master_list);
2c14f28b DA	331
	332	idr_replace(&drm_minors_idr, new_minor, minor_id);
	333
	334	if (type == DRM_MINOR_LEGACY) {
	335	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	336	if (ret) {
	337	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	338	goto err_mem;
1da177e4	339	}
2c14f28b	340	} else
955b12de BG	341	new_minor->proc_root = NULL;
	342
	343	#if defined(CONFIG_DEBUG_FS)
	344	ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
	345	if (ret) {
	346	DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n");
	347	goto err_g2;
	348	}
	349	#endif
2c14f28b DA	350
	351	ret = drm_sysfs_device_add(new_minor);
	352	if (ret) {
	353	printk(KERN_ERR
	354	"DRM: Error sysfs_device_add.\n");
	355	goto err_g2;
1da177e4	356	}
2c14f28b DA	357	*minor = new_minor;
	358
	359	DRM_DEBUG("new minor assigned %d\n", minor_id);
	360	return 0;
	361
	362
	363	err_g2:
	364	if (new_minor->type == DRM_MINOR_LEGACY)
	365	drm_proc_cleanup(new_minor, drm_proc_root);
	366	err_mem:
	367	kfree(new_minor);
	368	err_idr:
	369	idr_remove(&drm_minors_idr, minor_id);
	370	*minor = NULL;
1da177e4 LT	371	return ret;
1da177e4 LT	372	}
b5e89ed5	373
c94f7029 DA	374	/**
	375	* Register.
	376	*
	377	* \param pdev - PCI device structure
	378	* \param ent entry from the PCI ID table with device type flags
	379	* \return zero on success or a negative number on failure.
	380	*
	381	* Attempt to gets inter module "drm" information. If we are first
	382	* then register the character device and inter module information.
	383	* Try and register, if we fail to register, backout previous work.
	384	*/
	385	int drm_get_dev(struct pci_dev pdev, const struct pci_device_id ent,
b5e89ed5	386	struct drm_driver *driver)
c94f7029	387	{
84b1fd10	388	struct drm_device *dev;
c94f7029 DA	389	int ret;
	390
	391	DRM_DEBUG("\n");
	392
	393	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	394	if (!dev)
	395	return -ENOMEM;
	396
2c3f0edd JG	397	ret = pci_enable_device(pdev);
	398	if (ret)
	399	goto err_g1;
c94f7029	400
19a8f59a	401	pci_set_master(pdev);
c94f7029 DA	402	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
c94f7029 DA	403	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
2c3f0edd	404	goto err_g2;
c94f7029	405	}
f453ba04 DA	406
f453ba04 DA	407	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
112b715e	408	pci_set_drvdata(pdev, dev);
f453ba04 DA	409	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	410	if (ret)
	411	goto err_g2;
	412	}
	413
2c14f28b	414	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
f453ba04	415	goto err_g3;
bc5f4523	416
f453ba04 DA	417	if (dev->driver->load) {
	418	ret = dev->driver->load(dev, ent->driver_data);
	419	if (ret)
3788f48a	420	goto err_g4;
f453ba04 DA	421	}
	422
	423	/* setup the grouping for the legacy output */
	424	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	425	ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
	426	if (ret)
3788f48a	427	goto err_g4;
f453ba04	428	}
a9d51a5a	429
e7f7ab45 DA	430	list_add_tail(&dev->driver_item, &driver->device_list);
e7f7ab45 DA	431
cd00f95a	432	DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
22eae947	433	driver->name, driver->major, driver->minor, driver->patchlevel,
cd00f95a	434	driver->date, pci_name(pdev), dev->primary->index);
c94f7029 DA	435
	436	return 0;
	437
3788f48a	438	err_g4:
a9d51a5a	439	drm_put_minor(&dev->primary);
3788f48a BS	440	err_g3:
	441	if (drm_core_check_feature(dev, DRIVER_MODESET))
	442	drm_put_minor(&dev->control);
2c3f0edd JG	443	err_g2:
	444	pci_disable_device(pdev);
	445	err_g1:
c94f7029 DA	446	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	447	return ret;
	448	}
112b715e	449	EXPORT_SYMBOL(drm_get_dev);
1da177e4 LT	450
	451	/**
	452	* Put a secondary minor number.
	453	*
	454	* \param sec_minor - structure to be released
	455	* \return always zero
	456	*
	457	* Cleans up the proc resources. Not legal for this to be the
	458	* last minor released.
	459	*
	460	*/
2c14f28b	461	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	462	{
2c14f28b	463	struct drm_minor minor = minor_p;
673a394b	464
2c14f28b	465	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	466
2c14f28b DA	467	if (minor->type == DRM_MINOR_LEGACY)
2c14f28b DA	468	drm_proc_cleanup(minor, drm_proc_root);
955b12de BG	469	#if defined(CONFIG_DEBUG_FS)
	470	drm_debugfs_cleanup(minor);
	471	#endif
	472
2c14f28b	473	drm_sysfs_device_remove(minor);
1da177e4	474
2c14f28b	475	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	476
2c14f28b DA	477	kfree(minor);
2c14f28b DA	478	*minor_p = NULL;
1da177e4 LT	479	return 0;
1da177e4 LT	480	}
112b715e KH	481
	482	/**
	483	* Called via drm_exit() at module unload time or when pci device is
	484	* unplugged.
	485	*
	486	* Cleans up all DRM device, calling drm_lastclose().
	487	*
	488	* \sa drm_init
	489	*/
	490	void drm_put_dev(struct drm_device *dev)
	491	{
	492	struct drm_driver *driver = dev->driver;
	493	struct drm_map_list r_list, list_temp;
	494
	495	DRM_DEBUG("\n");
	496
	497	if (!dev) {
	498	DRM_ERROR("cleanup called no dev\n");
	499	return;
	500	}
	501
	502	drm_vblank_cleanup(dev);
	503
	504	drm_lastclose(dev);
	505
	506	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
	507	dev->agp && dev->agp->agp_mtrr >= 0) {
	508	int retval;
	509	retval = mtrr_del(dev->agp->agp_mtrr,
	510	dev->agp->agp_info.aper_base,
	511	dev->agp->agp_info.aper_size * 1024 * 1024);
	512	DRM_DEBUG("mtrr_del=%d\n", retval);
	513	}
	514
	515	if (dev->driver->unload)
	516	dev->driver->unload(dev);
	517
	518	if (drm_core_has_AGP(dev) && dev->agp) {
	519	drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
	520	dev->agp = NULL;
	521	}
	522
112b715e KH	523	list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
112b715e KH	524	drm_rmmap(dev, r_list->map);
30ddbd94 BS	525	drm_ht_remove(&dev->map_hash);
	526
	527	drm_ctxbitmap_cleanup(dev);
112b715e KH	528
	529	if (drm_core_check_feature(dev, DRIVER_MODESET))
	530	drm_put_minor(&dev->control);
	531
	532	if (driver->driver_features & DRIVER_GEM)
	533	drm_gem_destroy(dev);
	534
	535	drm_put_minor(&dev->primary);
	536
	537	if (dev->devname) {
	538	drm_free(dev->devname, strlen(dev->devname) + 1,
	539	DRM_MEM_DRIVER);
	540	dev->devname = NULL;
	541	}
	542	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	543	}
	544	EXPORT_SYMBOL(drm_put_dev);