5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
11 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
12 * All Rights Reserved.
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:
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
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.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
39 unsigned int drm_debug = 0; /* 1 to enable debug output */
40 EXPORT_SYMBOL(drm_debug);
42 MODULE_AUTHOR(CORE_AUTHOR);
43 MODULE_DESCRIPTION(CORE_DESC);
44 MODULE_LICENSE("GPL and additional rights");
45 MODULE_PARM_DESC(debug, "Enable debug output");
47 module_param_named(debug, drm_debug, int, 0600);
49 struct idr drm_minors_idr;
51 struct class *drm_class;
52 struct proc_dir_entry *drm_proc_root;
53 struct dentry *drm_debugfs_root;
55 static int drm_minor_get_id(struct drm_device *dev, int type)
59 int base = 0, limit = 63;
61 if (type == DRM_MINOR_CONTROL) {
64 } else if (type == DRM_MINOR_RENDER) {
70 if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
71 DRM_ERROR("Out of memory expanding drawable idr\n");
74 mutex_lock(&dev->struct_mutex);
75 ret = idr_get_new_above(&drm_minors_idr, NULL,
77 mutex_unlock(&dev->struct_mutex);
84 if (new_id >= limit) {
85 idr_remove(&drm_minors_idr, new_id);
91 struct drm_master *drm_master_create(struct drm_minor *minor)
93 struct drm_master *master;
95 master = drm_calloc(1, sizeof(*master), DRM_MEM_DRIVER);
99 kref_init(&master->refcount);
100 spin_lock_init(&master->lock.spinlock);
101 init_waitqueue_head(&master->lock.lock_queue);
102 drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
103 INIT_LIST_HEAD(&master->magicfree);
104 master->minor = minor;
106 list_add_tail(&master->head, &minor->master_list);
111 struct drm_master *drm_master_get(struct drm_master *master)
113 kref_get(&master->refcount);
117 static void drm_master_destroy(struct kref *kref)
119 struct drm_master *master = container_of(kref, struct drm_master, refcount);
120 struct drm_magic_entry *pt, *next;
121 struct drm_device *dev = master->minor->dev;
122 struct drm_map_list *r_list, *list_temp;
124 list_del(&master->head);
126 if (dev->driver->master_destroy)
127 dev->driver->master_destroy(dev, master);
129 list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
130 if (r_list->master == master) {
131 drm_rmmap_locked(dev, r_list->map);
136 if (master->unique) {
137 drm_free(master->unique, master->unique_size, DRM_MEM_DRIVER);
138 master->unique = NULL;
139 master->unique_len = 0;
142 list_for_each_entry_safe(pt, next, &master->magicfree, head) {
144 drm_ht_remove_item(&master->magiclist, &pt->hash_item);
145 drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
148 drm_ht_remove(&master->magiclist);
150 drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
153 void drm_master_put(struct drm_master **master)
155 kref_put(&(*master)->refcount, drm_master_destroy);
159 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
160 struct drm_file *file_priv)
162 if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
165 if (!file_priv->master)
168 if (!file_priv->minor->master &&
169 file_priv->minor->master != file_priv->master) {
170 mutex_lock(&dev->struct_mutex);
171 file_priv->minor->master = drm_master_get(file_priv->master);
172 mutex_unlock(&dev->struct_mutex);
178 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
179 struct drm_file *file_priv)
181 if (!file_priv->master)
183 mutex_lock(&dev->struct_mutex);
184 drm_master_put(&file_priv->minor->master);
185 mutex_unlock(&dev->struct_mutex);
189 static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
190 const struct pci_device_id *ent,
191 struct drm_driver *driver)
195 INIT_LIST_HEAD(&dev->filelist);
196 INIT_LIST_HEAD(&dev->ctxlist);
197 INIT_LIST_HEAD(&dev->vmalist);
198 INIT_LIST_HEAD(&dev->maplist);
200 spin_lock_init(&dev->count_lock);
201 spin_lock_init(&dev->drw_lock);
202 init_timer(&dev->timer);
203 mutex_init(&dev->struct_mutex);
204 mutex_init(&dev->ctxlist_mutex);
206 idr_init(&dev->drw_idr);
209 dev->pci_device = pdev->device;
210 dev->pci_vendor = pdev->vendor;
213 dev->hose = pdev->sysdata;
216 if (drm_ht_create(&dev->map_hash, 12)) {
220 /* the DRM has 6 basic counters */
222 dev->types[0] = _DRM_STAT_LOCK;
223 dev->types[1] = _DRM_STAT_OPENS;
224 dev->types[2] = _DRM_STAT_CLOSES;
225 dev->types[3] = _DRM_STAT_IOCTLS;
226 dev->types[4] = _DRM_STAT_LOCKS;
227 dev->types[5] = _DRM_STAT_UNLOCKS;
229 dev->driver = driver;
231 if (drm_core_has_AGP(dev)) {
232 if (drm_device_is_agp(dev))
233 dev->agp = drm_agp_init(dev);
234 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
235 && (dev->agp == NULL)) {
236 DRM_ERROR("Cannot initialize the agpgart module.\n");
238 goto error_out_unreg;
240 if (drm_core_has_MTRR(dev)) {
243 mtrr_add(dev->agp->agp_info.aper_base,
244 dev->agp->agp_info.aper_size *
245 1024 * 1024, MTRR_TYPE_WRCOMB, 1);
250 retcode = drm_ctxbitmap_init(dev);
252 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
253 goto error_out_unreg;
256 if (driver->driver_features & DRIVER_GEM) {
257 retcode = drm_gem_init(dev);
259 DRM_ERROR("Cannot initialize graphics execution "
261 goto error_out_unreg;
274 * Get a secondary minor number.
276 * \param dev device data structure
277 * \param sec-minor structure to hold the assigned minor
278 * \return negative number on failure.
280 * Search an empty entry and initialize it to the given parameters, and
281 * create the proc init entry via proc_init(). This routines assigns
282 * minor numbers to secondary heads of multi-headed cards
284 static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
286 struct drm_minor *new_minor;
292 minor_id = drm_minor_get_id(dev, type);
296 new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
302 new_minor->type = type;
303 new_minor->device = MKDEV(DRM_MAJOR, minor_id);
304 new_minor->dev = dev;
305 new_minor->index = minor_id;
306 INIT_LIST_HEAD(&new_minor->master_list);
308 idr_replace(&drm_minors_idr, new_minor, minor_id);
310 if (type == DRM_MINOR_LEGACY) {
311 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
313 DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
317 new_minor->proc_root = NULL;
319 #if defined(CONFIG_DEBUG_FS)
320 ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
322 DRM_ERROR("DRM: Failed to initialize /debugfs/dri.\n");
327 ret = drm_sysfs_device_add(new_minor);
330 "DRM: Error sysfs_device_add.\n");
335 DRM_DEBUG("new minor assigned %d\n", minor_id);
340 if (new_minor->type == DRM_MINOR_LEGACY)
341 drm_proc_cleanup(new_minor, drm_proc_root);
345 idr_remove(&drm_minors_idr, minor_id);
353 * \param pdev - PCI device structure
354 * \param ent entry from the PCI ID table with device type flags
355 * \return zero on success or a negative number on failure.
357 * Attempt to gets inter module "drm" information. If we are first
358 * then register the character device and inter module information.
359 * Try and register, if we fail to register, backout previous work.
361 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
362 struct drm_driver *driver)
364 struct drm_device *dev;
369 dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
373 ret = pci_enable_device(pdev);
377 pci_set_master(pdev);
378 if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
379 printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
383 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
384 ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
389 if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
392 if (dev->driver->load) {
393 ret = dev->driver->load(dev, ent->driver_data);
398 /* setup the grouping for the legacy output */
399 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
400 ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
405 list_add_tail(&dev->driver_item, &driver->device_list);
407 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
408 driver->name, driver->major, driver->minor, driver->patchlevel,
409 driver->date, dev->primary->index);
414 drm_put_minor(&dev->primary);
416 pci_disable_device(pdev);
418 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
423 * Put a device minor number.
425 * \param dev device data structure
426 * \return always zero
428 * Cleans up the proc resources. If it is the last minor then release the foreign
429 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
430 * unregisters the character device.
432 int drm_put_dev(struct drm_device * dev)
434 DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
437 drm_free(dev->devname, strlen(dev->devname) + 1,
441 drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
446 * Put a secondary minor number.
448 * \param sec_minor - structure to be released
449 * \return always zero
451 * Cleans up the proc resources. Not legal for this to be the
452 * last minor released.
455 int drm_put_minor(struct drm_minor **minor_p)
457 struct drm_minor *minor = *minor_p;
459 DRM_DEBUG("release secondary minor %d\n", minor->index);
461 if (minor->type == DRM_MINOR_LEGACY)
462 drm_proc_cleanup(minor, drm_proc_root);
463 #if defined(CONFIG_DEBUG_FS)
464 drm_debugfs_cleanup(minor);
467 drm_sysfs_device_remove(minor);
469 idr_remove(&drm_minors_idr, minor->index);