drm/radeon: include radeon_asic.h in the asic specific files
[linux-2.6.git] / drivers / gpu / drm / drm_stub.c
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
39 unsigned int drm_debug = 0;     /* 1 to enable debug output */
40 EXPORT_SYMBOL(drm_debug);
41
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");
46
47 module_param_named(debug, drm_debug, int, 0600);
48
49 struct idr drm_minors_idr;
50
51 struct class *drm_class;
52 struct proc_dir_entry *drm_proc_root;
53 struct dentry *drm_debugfs_root;
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;
60
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);
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
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
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
106 struct drm_master *drm_master_create(struct drm_minor *minor)
107 {
108         struct drm_master *master;
109
110         master = kzalloc(sizeof(*master), GFP_KERNEL);
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 EXPORT_SYMBOL(drm_master_get);
132
133 static void drm_master_destroy(struct kref *kref)
134 {
135         struct drm_master *master = container_of(kref, struct drm_master, refcount);
136         struct drm_magic_entry *pt, *next;
137         struct drm_device *dev = master->minor->dev;
138         struct drm_map_list *r_list, *list_temp;
139
140         list_del(&master->head);
141
142         if (dev->driver->master_destroy)
143                 dev->driver->master_destroy(dev, master);
144
145         list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
146                 if (r_list->master == master) {
147                         drm_rmmap_locked(dev, r_list->map);
148                         r_list = NULL;
149                 }
150         }
151
152         if (master->unique) {
153                 kfree(master->unique);
154                 master->unique = NULL;
155                 master->unique_len = 0;
156         }
157
158         list_for_each_entry_safe(pt, next, &master->magicfree, head) {
159                 list_del(&pt->head);
160                 drm_ht_remove_item(&master->magiclist, &pt->hash_item);
161                 kfree(pt);
162         }
163
164         drm_ht_remove(&master->magiclist);
165
166         kfree(master);
167 }
168
169 void drm_master_put(struct drm_master **master)
170 {
171         kref_put(&(*master)->refcount, drm_master_destroy);
172         *master = NULL;
173 }
174 EXPORT_SYMBOL(drm_master_put);
175
176 int drm_setmaster_ioctl(struct drm_device *dev, void *data,
177                         struct drm_file *file_priv)
178 {
179         int ret = 0;
180
181         if (file_priv->is_master)
182                 return 0;
183
184         if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
185                 return -EINVAL;
186
187         if (!file_priv->master)
188                 return -EINVAL;
189
190         if (!file_priv->minor->master &&
191             file_priv->minor->master != file_priv->master) {
192                 mutex_lock(&dev->struct_mutex);
193                 file_priv->minor->master = drm_master_get(file_priv->master);
194                 file_priv->is_master = 1;
195                 if (dev->driver->master_set) {
196                         ret = dev->driver->master_set(dev, file_priv, false);
197                         if (unlikely(ret != 0)) {
198                                 file_priv->is_master = 0;
199                                 drm_master_put(&file_priv->minor->master);
200                         }
201                 }
202                 mutex_unlock(&dev->struct_mutex);
203         }
204
205         return 0;
206 }
207
208 int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
209                          struct drm_file *file_priv)
210 {
211         if (!file_priv->is_master)
212                 return -EINVAL;
213
214         if (!file_priv->minor->master)
215                 return -EINVAL;
216
217         mutex_lock(&dev->struct_mutex);
218         if (dev->driver->master_drop)
219                 dev->driver->master_drop(dev, file_priv, false);
220         drm_master_put(&file_priv->minor->master);
221         file_priv->is_master = 0;
222         mutex_unlock(&dev->struct_mutex);
223         return 0;
224 }
225
226 static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
227                            const struct pci_device_id *ent,
228                            struct drm_driver *driver)
229 {
230         int retcode;
231
232         INIT_LIST_HEAD(&dev->filelist);
233         INIT_LIST_HEAD(&dev->ctxlist);
234         INIT_LIST_HEAD(&dev->vmalist);
235         INIT_LIST_HEAD(&dev->maplist);
236         INIT_LIST_HEAD(&dev->vblank_event_list);
237
238         spin_lock_init(&dev->count_lock);
239         spin_lock_init(&dev->drw_lock);
240         spin_lock_init(&dev->event_lock);
241         init_timer(&dev->timer);
242         mutex_init(&dev->struct_mutex);
243         mutex_init(&dev->ctxlist_mutex);
244
245         idr_init(&dev->drw_idr);
246
247         dev->pdev = pdev;
248         dev->pci_device = pdev->device;
249         dev->pci_vendor = pdev->vendor;
250
251 #ifdef __alpha__
252         dev->hose = pdev->sysdata;
253 #endif
254
255         if (drm_ht_create(&dev->map_hash, 12)) {
256                 return -ENOMEM;
257         }
258
259         /* the DRM has 6 basic counters */
260         dev->counters = 6;
261         dev->types[0] = _DRM_STAT_LOCK;
262         dev->types[1] = _DRM_STAT_OPENS;
263         dev->types[2] = _DRM_STAT_CLOSES;
264         dev->types[3] = _DRM_STAT_IOCTLS;
265         dev->types[4] = _DRM_STAT_LOCKS;
266         dev->types[5] = _DRM_STAT_UNLOCKS;
267
268         dev->driver = driver;
269
270         if (drm_core_has_AGP(dev)) {
271                 if (drm_device_is_agp(dev))
272                         dev->agp = drm_agp_init(dev);
273                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
274                     && (dev->agp == NULL)) {
275                         DRM_ERROR("Cannot initialize the agpgart module.\n");
276                         retcode = -EINVAL;
277                         goto error_out_unreg;
278                 }
279                 if (drm_core_has_MTRR(dev)) {
280                         if (dev->agp)
281                                 dev->agp->agp_mtrr =
282                                     mtrr_add(dev->agp->agp_info.aper_base,
283                                              dev->agp->agp_info.aper_size *
284                                              1024 * 1024, MTRR_TYPE_WRCOMB, 1);
285                 }
286         }
287
288
289         retcode = drm_ctxbitmap_init(dev);
290         if (retcode) {
291                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
292                 goto error_out_unreg;
293         }
294
295         if (driver->driver_features & DRIVER_GEM) {
296                 retcode = drm_gem_init(dev);
297                 if (retcode) {
298                         DRM_ERROR("Cannot initialize graphics execution "
299                                   "manager (GEM)\n");
300                         goto error_out_unreg;
301                 }
302         }
303
304         return 0;
305
306       error_out_unreg:
307         drm_lastclose(dev);
308         return retcode;
309 }
310
311
312 /**
313  * Get a secondary minor number.
314  *
315  * \param dev device data structure
316  * \param sec-minor structure to hold the assigned minor
317  * \return negative number on failure.
318  *
319  * Search an empty entry and initialize it to the given parameters, and
320  * create the proc init entry via proc_init(). This routines assigns
321  * minor numbers to secondary heads of multi-headed cards
322  */
323 static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
324 {
325         struct drm_minor *new_minor;
326         int ret;
327         int minor_id;
328
329         DRM_DEBUG("\n");
330
331         minor_id = drm_minor_get_id(dev, type);
332         if (minor_id < 0)
333                 return minor_id;
334
335         new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
336         if (!new_minor) {
337                 ret = -ENOMEM;
338                 goto err_idr;
339         }
340
341         new_minor->type = type;
342         new_minor->device = MKDEV(DRM_MAJOR, minor_id);
343         new_minor->dev = dev;
344         new_minor->index = minor_id;
345         INIT_LIST_HEAD(&new_minor->master_list);
346
347         idr_replace(&drm_minors_idr, new_minor, minor_id);
348
349         if (type == DRM_MINOR_LEGACY) {
350                 ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
351                 if (ret) {
352                         DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
353                         goto err_mem;
354                 }
355         } else
356                 new_minor->proc_root = NULL;
357
358 #if defined(CONFIG_DEBUG_FS)
359         ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root);
360         if (ret) {
361                 DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
362                 goto err_g2;
363         }
364 #endif
365
366         ret = drm_sysfs_device_add(new_minor);
367         if (ret) {
368                 printk(KERN_ERR
369                        "DRM: Error sysfs_device_add.\n");
370                 goto err_g2;
371         }
372         *minor = new_minor;
373
374         DRM_DEBUG("new minor assigned %d\n", minor_id);
375         return 0;
376
377
378 err_g2:
379         if (new_minor->type == DRM_MINOR_LEGACY)
380                 drm_proc_cleanup(new_minor, drm_proc_root);
381 err_mem:
382         kfree(new_minor);
383 err_idr:
384         idr_remove(&drm_minors_idr, minor_id);
385         *minor = NULL;
386         return ret;
387 }
388
389 /**
390  * Register.
391  *
392  * \param pdev - PCI device structure
393  * \param ent entry from the PCI ID table with device type flags
394  * \return zero on success or a negative number on failure.
395  *
396  * Attempt to gets inter module "drm" information. If we are first
397  * then register the character device and inter module information.
398  * Try and register, if we fail to register, backout previous work.
399  */
400 int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
401                 struct drm_driver *driver)
402 {
403         struct drm_device *dev;
404         int ret;
405
406         DRM_DEBUG("\n");
407
408         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
409         if (!dev)
410                 return -ENOMEM;
411
412         ret = pci_enable_device(pdev);
413         if (ret)
414                 goto err_g1;
415
416         pci_set_master(pdev);
417         if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
418                 printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
419                 goto err_g2;
420         }
421
422         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
423                 pci_set_drvdata(pdev, dev);
424                 ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
425                 if (ret)
426                         goto err_g2;
427         }
428
429         if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
430                 goto err_g3;
431
432         if (dev->driver->load) {
433                 ret = dev->driver->load(dev, ent->driver_data);
434                 if (ret)
435                         goto err_g4;
436         }
437
438         /* setup the grouping for the legacy output */
439         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
440                 ret = drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group);
441                 if (ret)
442                         goto err_g4;
443         }
444
445         list_add_tail(&dev->driver_item, &driver->device_list);
446
447         DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n",
448                  driver->name, driver->major, driver->minor, driver->patchlevel,
449                  driver->date, pci_name(pdev), dev->primary->index);
450
451         return 0;
452
453 err_g4:
454         drm_put_minor(&dev->primary);
455 err_g3:
456         if (drm_core_check_feature(dev, DRIVER_MODESET))
457                 drm_put_minor(&dev->control);
458 err_g2:
459         pci_disable_device(pdev);
460 err_g1:
461         kfree(dev);
462         return ret;
463 }
464 EXPORT_SYMBOL(drm_get_dev);
465
466 /**
467  * Put a secondary minor number.
468  *
469  * \param sec_minor - structure to be released
470  * \return always zero
471  *
472  * Cleans up the proc resources. Not legal for this to be the
473  * last minor released.
474  *
475  */
476 int drm_put_minor(struct drm_minor **minor_p)
477 {
478         struct drm_minor *minor = *minor_p;
479
480         DRM_DEBUG("release secondary minor %d\n", minor->index);
481
482         if (minor->type == DRM_MINOR_LEGACY)
483                 drm_proc_cleanup(minor, drm_proc_root);
484 #if defined(CONFIG_DEBUG_FS)
485         drm_debugfs_cleanup(minor);
486 #endif
487
488         drm_sysfs_device_remove(minor);
489
490         idr_remove(&drm_minors_idr, minor->index);
491
492         kfree(minor);
493         *minor_p = NULL;
494         return 0;
495 }
496
497 /**
498  * Called via drm_exit() at module unload time or when pci device is
499  * unplugged.
500  *
501  * Cleans up all DRM device, calling drm_lastclose().
502  *
503  * \sa drm_init
504  */
505 void drm_put_dev(struct drm_device *dev)
506 {
507         struct drm_driver *driver;
508         struct drm_map_list *r_list, *list_temp;
509
510         DRM_DEBUG("\n");
511
512         if (!dev) {
513                 DRM_ERROR("cleanup called no dev\n");
514                 return;
515         }
516         driver = dev->driver;
517
518         drm_vblank_cleanup(dev);
519
520         drm_lastclose(dev);
521
522         if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
523             dev->agp && dev->agp->agp_mtrr >= 0) {
524                 int retval;
525                 retval = mtrr_del(dev->agp->agp_mtrr,
526                                   dev->agp->agp_info.aper_base,
527                                   dev->agp->agp_info.aper_size * 1024 * 1024);
528                 DRM_DEBUG("mtrr_del=%d\n", retval);
529         }
530
531         if (dev->driver->unload)
532                 dev->driver->unload(dev);
533
534         if (drm_core_has_AGP(dev) && dev->agp) {
535                 kfree(dev->agp);
536                 dev->agp = NULL;
537         }
538
539         list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
540                 drm_rmmap(dev, r_list->map);
541         drm_ht_remove(&dev->map_hash);
542
543         drm_ctxbitmap_cleanup(dev);
544
545         if (drm_core_check_feature(dev, DRIVER_MODESET))
546                 drm_put_minor(&dev->control);
547
548         if (driver->driver_features & DRIVER_GEM)
549                 drm_gem_destroy(dev);
550
551         drm_put_minor(&dev->primary);
552
553         if (dev->devname) {
554                 kfree(dev->devname);
555                 dev->devname = NULL;
556         }
557         kfree(dev);
558 }
559 EXPORT_SYMBOL(drm_put_dev);