24c779697873803de4607ab259da6512216d07e0
[dragonfly.git] / sys / dev / drm / drm_drv.c
1 /*-
2  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the next
14  * paragraph) shall be included in all copies or substantial portions of the
15  * Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  *
25  * Authors:
26  *    Rickard E. (Rik) Faith <faith@valinux.com>
27  *    Gareth Hughes <gareth@valinux.com>
28  *
29  */
30
31 /** @file drm_drv.c
32  * The catch-all file for DRM device support, including module setup/teardown,
33  * open/close, and ioctl dispatch.
34  */
35
36 #include <machine/limits.h>
37 #include "dev/drm/drmP.h"
38 #include "dev/drm/drm.h"
39 #include "dev/drm/drm_sarea.h"
40
41 #ifdef DRM_DEBUG_DEFAULT_ON
42 int drm_debug_flag = 1;
43 #else
44 int drm_debug_flag = 0;
45 #endif
46
47 static int drm_load(struct drm_device *dev);
48 static void drm_unload(struct drm_device *dev);
49 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
50     drm_pci_id_list_t *idlist);
51
52 #define DRIVER_SOFTC(unit) \
53         ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
54
55 MODULE_VERSION(drm, 1);
56 MODULE_DEPEND(drm, agp, 1, 1, 1);
57 MODULE_DEPEND(drm, pci, 1, 1, 1);
58 MODULE_DEPEND(drm, mem, 1, 1, 1);
59
60 static drm_ioctl_desc_t           drm_ioctls[256] = {
61         DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
62         DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
63         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
64         DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
65         DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
66         DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
67         DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
68         DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
69
70         DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
71         DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
72         DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
73         DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74
75         DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
76         DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
77
78         DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
79         DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
80
81         DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
82         DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
83         DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
84         DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
85         DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
86         DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
87         DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
88
89         DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
90         DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
91
92         DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
93         DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
94
95         DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
96
97         DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
98         DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
99         DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
100         DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
101         DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
102         DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
103
104         DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
105
106         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
107         DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
108         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
109         DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
110         DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
111         DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
112         DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
113         DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114
115         DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116         DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117         DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
118         DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
119         DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
120 };
121
122 static struct dev_ops drm_cdevsw = {
123         { "drm", 145, D_TRACKCLOSE },
124         .d_open =       drm_open,
125         .d_close =      drm_close,
126         .d_read =       drm_read,
127         .d_ioctl =      drm_ioctl,
128         .d_poll =       drm_poll,
129         .d_mmap =       drm_mmap
130 };
131
132 static int drm_msi = 1; /* Enable by default. */
133 TUNABLE_INT("hw.drm.msi", &drm_msi);
134
135 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
136         {0x8086, 0x2772}, /* Intel i945G        */ \
137         {0x8086, 0x27A2}, /* Intel i945GM       */ \
138         {0x8086, 0x27AE}, /* Intel i945GME      */ \
139         {0, 0}
140 };
141
142 static int drm_msi_is_blacklisted(int vendor, int device)
143 {
144         int i = 0;
145         
146         for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
147                 if ((drm_msi_blacklist[i].vendor == vendor) &&
148                     (drm_msi_blacklist[i].device == device)) {
149                         return 1;
150                 }
151         }
152
153         return 0;
154 }
155
156 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
157 {
158         drm_pci_id_list_t *id_entry;
159         int vendor, device;
160         device_t realdev;
161
162         if (!strcmp(device_get_name(kdev), "drmsub"))
163                 realdev = device_get_parent(kdev);
164         else
165                 realdev = kdev;
166         vendor = pci_get_vendor(realdev);
167         device = pci_get_device(realdev);
168
169 #if 0 /* XXX */
170         if (pci_get_class(kdev) != PCIC_DISPLAY
171             || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
172                 return ENXIO;
173 #endif
174
175         id_entry = drm_find_description(vendor, device, idlist);
176         if (id_entry != NULL) {
177                 if (!device_get_desc(kdev)) {
178                         DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
179                         device_set_desc(kdev, id_entry->name);
180                 }
181                 return 0;
182         }
183
184         return ENXIO;
185 }
186
187 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
188 {
189         struct drm_device *dev;
190         drm_pci_id_list_t *id_entry;
191         int unit;
192 #if 0
193         int msicount;
194 #endif
195
196         unit = device_get_unit(kdev);
197         dev = device_get_softc(kdev);
198
199         if (!strcmp(device_get_name(kdev), "drmsub"))
200                 dev->device = device_get_parent(kdev);
201         else
202                 dev->device = kdev;
203
204         dev_ops_add(&drm_cdevsw, -1, unit);
205         dev->devnode = make_dev(&drm_cdevsw,
206                         unit,
207                         DRM_DEV_UID,
208                         DRM_DEV_GID,
209                         DRM_DEV_MODE,
210                         "dri/card%d", unit);
211
212         dev->pci_domain = 0;
213         dev->pci_bus = pci_get_bus(dev->device);
214         dev->pci_slot = pci_get_slot(dev->device);
215         dev->pci_func = pci_get_function(dev->device);
216
217         dev->pci_vendor = pci_get_vendor(dev->device);
218         dev->pci_device = pci_get_device(dev->device);
219
220         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
221                 if (drm_msi &&
222                     !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
223 #if 0
224                         msicount = pci_msi_count(dev->device);
225                         DRM_DEBUG("MSI count = %d\n", msicount);
226                         if (msicount > 1)
227                                 msicount = 1;
228
229                         if (pci_alloc_msi(dev->device, &msicount) == 0) {
230                                 DRM_INFO("MSI enabled %d message(s)\n",
231                                     msicount);
232                                 dev->msi_enabled = 1;
233                                 dev->irqrid = 1;
234                         }
235 #endif
236                 }
237
238                 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
239                     &dev->irqrid, RF_SHAREABLE);
240                 if (!dev->irqr) {
241                         return ENOENT;
242                 }
243
244                 dev->irq = (int) rman_get_start(dev->irqr);
245         }
246
247         DRM_SPININIT(&dev->dev_lock, "drmdev");
248         lwkt_serialize_init(&dev->irq_lock);
249         DRM_SPININIT(&dev->vbl_lock, "drmvbl");
250         DRM_SPININIT(&dev->drw_lock, "drmdrw");
251
252         id_entry = drm_find_description(dev->pci_vendor,
253             dev->pci_device, idlist);
254         dev->id_entry = id_entry;
255
256         return drm_load(dev);
257 }
258
259 int drm_detach(device_t kdev)
260 {
261         struct drm_device *dev;
262
263         dev = device_get_softc(kdev);
264
265         drm_unload(dev);
266
267         bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
268
269 #if 0
270         if (dev->msi_enabled) {
271                 pci_release_msi(dev->device);
272                 DRM_INFO("MSI released\n");
273         }
274 #endif
275
276         return 0;
277 }
278
279 #ifndef DRM_DEV_NAME
280 #define DRM_DEV_NAME "drm"
281 #endif
282
283 devclass_t drm_devclass;
284
285 drm_pci_id_list_t *drm_find_description(int vendor, int device,
286     drm_pci_id_list_t *idlist)
287 {
288         int i = 0;
289         
290         for (i = 0; idlist[i].vendor != 0; i++) {
291                 if ((idlist[i].vendor == vendor) &&
292                     ((idlist[i].device == device) ||
293                     (idlist[i].device == 0))) {
294                         return &idlist[i];
295                 }
296         }
297         return NULL;
298 }
299
300 static int drm_firstopen(struct drm_device *dev)
301 {
302         drm_local_map_t *map;
303         int i;
304
305         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
306
307         /* prebuild the SAREA */
308         i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
309             _DRM_CONTAINS_LOCK, &map);
310         if (i != 0)
311                 return i;
312
313         if (dev->driver->firstopen)
314                 dev->driver->firstopen(dev);
315
316         dev->buf_use = 0;
317
318         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
319                 i = drm_dma_setup(dev);
320                 if (i != 0)
321                         return i;
322         }
323
324         for (i = 0; i < DRM_HASH_SIZE; i++) {
325                 dev->magiclist[i].head = NULL;
326                 dev->magiclist[i].tail = NULL;
327         }
328
329         dev->lock.lock_queue = 0;
330         dev->irq_enabled = 0;
331         dev->context_flag = 0;
332         dev->last_context = 0;
333         dev->if_version = 0;
334
335         dev->buf_sigio = NULL;
336
337         DRM_DEBUG("\n");
338
339         return 0;
340 }
341
342 static int drm_lastclose(struct drm_device *dev)
343 {
344         drm_magic_entry_t *pt, *next;
345         drm_local_map_t *map, *mapsave;
346         int i;
347
348         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
349
350         DRM_DEBUG("\n");
351
352         if (dev->driver->lastclose != NULL)
353                 dev->driver->lastclose(dev);
354
355         if (dev->irq_enabled)
356                 drm_irq_uninstall(dev);
357
358         if (dev->unique) {
359                 free(dev->unique, DRM_MEM_DRIVER);
360                 dev->unique = NULL;
361                 dev->unique_len = 0;
362         }
363         /* Clear pid list */
364         for (i = 0; i < DRM_HASH_SIZE; i++) {
365                 for (pt = dev->magiclist[i].head; pt; pt = next) {
366                         next = pt->next;
367                         free(pt, DRM_MEM_MAGIC);
368                 }
369                 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
370         }
371
372         DRM_UNLOCK();
373         drm_drawable_free_all(dev);
374         DRM_LOCK();
375
376         /* Clear AGP information */
377         if (dev->agp) {
378                 drm_agp_mem_t *entry;
379                 drm_agp_mem_t *nexte;
380
381                 /* Remove AGP resources, but leave dev->agp intact until
382                  * drm_unload is called.
383                  */
384                 for (entry = dev->agp->memory; entry; entry = nexte) {
385                         nexte = entry->next;
386                         if (entry->bound)
387                                 drm_agp_unbind_memory(entry->handle);
388                         drm_agp_free_memory(entry->handle);
389                         free(entry, DRM_MEM_AGPLISTS);
390                 }
391                 dev->agp->memory = NULL;
392
393                 if (dev->agp->acquired)
394                         drm_agp_release(dev);
395
396                 dev->agp->acquired = 0;
397                 dev->agp->enabled  = 0;
398         }
399         if (dev->sg != NULL) {
400                 drm_sg_cleanup(dev->sg);
401                 dev->sg = NULL;
402         }
403
404         TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
405                 if (!(map->flags & _DRM_DRIVER))
406                         drm_rmmap(dev, map);
407         }
408
409         drm_dma_takedown(dev);
410         if (dev->lock.hw_lock) {
411                 dev->lock.hw_lock = NULL; /* SHM removed */
412                 dev->lock.file_priv = NULL;
413                 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
414         }
415
416         return 0;
417 }
418
419 static int drm_load(struct drm_device *dev)
420 {
421         int i, retcode;
422
423         DRM_DEBUG("\n");
424
425         TAILQ_INIT(&dev->maplist);
426
427         drm_mem_init();
428         drm_sysctl_init(dev);
429         TAILQ_INIT(&dev->files);
430
431         dev->counters  = 6;
432         dev->types[0]  = _DRM_STAT_LOCK;
433         dev->types[1]  = _DRM_STAT_OPENS;
434         dev->types[2]  = _DRM_STAT_CLOSES;
435         dev->types[3]  = _DRM_STAT_IOCTLS;
436         dev->types[4]  = _DRM_STAT_LOCKS;
437         dev->types[5]  = _DRM_STAT_UNLOCKS;
438
439         for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
440                 atomic_set(&dev->counts[i], 0);
441
442         if (dev->driver->load != NULL) {
443                 DRM_LOCK();
444                 /* Shared code returns -errno. */
445                 retcode = -dev->driver->load(dev,
446                     dev->id_entry->driver_private);
447                 pci_enable_busmaster(dev->device);
448                 DRM_UNLOCK();
449                 if (retcode != 0)
450                         goto error;
451         }
452
453         if (drm_core_has_AGP(dev)) {
454                 if (drm_device_is_agp(dev))
455                         dev->agp = drm_agp_init();
456                 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
457                     dev->agp == NULL) {
458                         DRM_ERROR("Card isn't AGP, or couldn't initialize "
459                             "AGP.\n");
460                         retcode = ENOMEM;
461                         goto error;
462                 }
463                 if (dev->agp != NULL) {
464                         if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
465                             dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
466                                 dev->agp->mtrr = 1;
467                 }
468         }
469
470         retcode = drm_ctxbitmap_init(dev);
471         if (retcode != 0) {
472                 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
473                 goto error;
474         }
475
476         DRM_INFO("Initialized %s %d.%d.%d %s\n",
477             dev->driver->name,
478             dev->driver->major,
479             dev->driver->minor,
480             dev->driver->patchlevel,
481             dev->driver->date);
482
483         return 0;
484
485 error:
486         drm_sysctl_cleanup(dev);
487         DRM_LOCK();
488         drm_lastclose(dev);
489         DRM_UNLOCK();
490         destroy_dev(dev->devnode);
491
492         DRM_SPINUNINIT(&dev->drw_lock);
493         DRM_SPINUNINIT(&dev->vbl_lock);
494         DRM_SPINUNINIT(&dev->dev_lock);
495
496         return retcode;
497 }
498
499 static void drm_unload(struct drm_device *dev)
500 {
501         int i;
502
503         DRM_DEBUG("\n");
504
505         drm_sysctl_cleanup(dev);
506         destroy_dev(dev->devnode);
507
508         drm_ctxbitmap_cleanup(dev);
509
510         if (dev->agp && dev->agp->mtrr) {
511                 int __unused retcode;
512
513                 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
514                     dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
515                 DRM_DEBUG("mtrr_del = %d", retcode);
516         }
517
518         drm_vblank_cleanup(dev);
519
520         DRM_LOCK();
521         drm_lastclose(dev);
522         DRM_UNLOCK();
523
524         /* Clean up PCI resources allocated by drm_bufs.c.  We're not really
525          * worried about resource consumption while the DRM is inactive (between
526          * lastclose and firstopen or unload) because these aren't actually
527          * taking up KVA, just keeping the PCI resource allocated.
528          */
529         for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
530                 if (dev->pcir[i] == NULL)
531                         continue;
532                 bus_release_resource(dev->device, SYS_RES_MEMORY,
533                     dev->pcirid[i], dev->pcir[i]);
534                 dev->pcir[i] = NULL;
535         }
536
537         if (dev->agp) {
538                 free(dev->agp, DRM_MEM_AGPLISTS);
539                 dev->agp = NULL;
540         }
541
542         if (dev->driver->unload != NULL) {
543                 DRM_LOCK();
544                 dev->driver->unload(dev);
545                 DRM_UNLOCK();
546         }
547
548         drm_mem_uninit();
549
550         pci_disable_busmaster(dev->device);
551
552         DRM_SPINUNINIT(&dev->drw_lock);
553         DRM_SPINUNINIT(&dev->vbl_lock);
554         DRM_SPINUNINIT(&dev->dev_lock);
555 }
556
557 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
558 {
559         struct drm_version *version = data;
560         int len;
561
562 #define DRM_COPY( name, value )                                         \
563         len = strlen( value );                                          \
564         if ( len > name##_len ) len = name##_len;                       \
565         name##_len = strlen( value );                                   \
566         if ( len && name ) {                                            \
567                 if ( DRM_COPY_TO_USER( name, value, len ) )             \
568                         return EFAULT;                          \
569         }
570
571         version->version_major          = dev->driver->major;
572         version->version_minor          = dev->driver->minor;
573         version->version_patchlevel     = dev->driver->patchlevel;
574
575         DRM_COPY(version->name, dev->driver->name);
576         DRM_COPY(version->date, dev->driver->date);
577         DRM_COPY(version->desc, dev->driver->desc);
578
579         return 0;
580 }
581
582 int drm_open(struct dev_open_args *ap)
583 {
584         struct cdev *kdev = ap->a_head.a_dev;
585         int flags = ap->a_oflags;
586         int fmt = 0;
587         struct thread *p = curthread;
588         struct drm_device *dev = NULL;
589         int retcode = 0;
590
591         dev = DRIVER_SOFTC(minor(kdev));
592
593         DRM_DEBUG("open_count = %d\n", dev->open_count);
594
595         retcode = drm_open_helper(kdev, flags, fmt, p, dev);
596
597         if (!retcode) {
598                 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
599                 DRM_LOCK();
600                 device_busy(dev->device);
601                 if (!dev->open_count++)
602                         retcode = drm_firstopen(dev);
603                 DRM_UNLOCK();
604         }
605
606         return retcode;
607 }
608
609 int drm_close(struct dev_close_args *ap)
610 {
611         struct cdev *kdev = ap->a_head.a_dev;
612         struct drm_file *file_priv;
613         struct drm_device *dev;
614         int retcode = 0;
615
616         dev = DRIVER_SOFTC(minor(kdev));
617         file_priv = drm_find_file_by_proc(dev, curthread);
618
619         DRM_DEBUG("open_count = %d\n", dev->open_count);
620
621         DRM_LOCK();
622
623         if (--file_priv->refs != 0)
624                 goto done;
625
626         if (dev->driver->preclose != NULL)
627                 dev->driver->preclose(dev, file_priv);
628
629         /* ========================================================
630          * Begin inline drm_release
631          */
632
633         DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
634             DRM_CURRENTPID, (long)dev->device, dev->open_count);
635
636         if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
637             && dev->lock.file_priv == file_priv) {
638                 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
639                           DRM_CURRENTPID,
640                           _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
641                 if (dev->driver->reclaim_buffers_locked != NULL)
642                         dev->driver->reclaim_buffers_locked(dev, file_priv);
643
644                 drm_lock_free(&dev->lock,
645                     _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
646                 
647                                 /* FIXME: may require heavy-handed reset of
648                                    hardware at this point, possibly
649                                    processed via a callback to the X
650                                    server. */
651         } else if (dev->driver->reclaim_buffers_locked != NULL &&
652             dev->lock.hw_lock != NULL) {
653                 /* The lock is required to reclaim buffers */
654                 for (;;) {
655                         if (!dev->lock.hw_lock) {
656                                 /* Device has been unregistered */
657                                 retcode = EINTR;
658                                 break;
659                         }
660                         if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
661                                 dev->lock.file_priv = file_priv;
662                                 dev->lock.lock_time = jiffies;
663                                 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
664                                 break;  /* Got lock */
665                         }
666                         /* Contention */
667                         crit_enter();
668                         tsleep_interlock((void *)&dev->lock.lock_queue);
669                         DRM_UNLOCK();
670                         retcode = tsleep((void *)&dev->lock.lock_queue,
671                             PCATCH, "drmlk2", 0);
672                         crit_exit();
673                         DRM_LOCK();
674                         if (retcode)
675                                 break;
676                 }
677                 if (retcode == 0) {
678                         dev->driver->reclaim_buffers_locked(dev, file_priv);
679                         drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
680                 }
681         }
682
683         if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
684             !dev->driver->reclaim_buffers_locked)
685                 drm_reclaim_buffers(dev, file_priv);
686
687         funsetown(dev->buf_sigio);
688
689         if (dev->driver->postclose != NULL)
690                 dev->driver->postclose(dev, file_priv);
691         TAILQ_REMOVE(&dev->files, file_priv, link);
692         free(file_priv, DRM_MEM_FILES);
693
694         /* ========================================================
695          * End inline drm_release
696          */
697 done:
698         atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
699         device_unbusy(dev->device);
700         if (--dev->open_count == 0) {
701                 retcode = drm_lastclose(dev);
702         }
703
704         DRM_UNLOCK();
705
706         return (0);
707 }
708
709 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
710  */
711 int drm_ioctl(struct dev_ioctl_args *ap)
712 {
713         struct cdev *kdev = ap->a_head.a_dev;
714         u_long cmd = ap->a_cmd;
715         caddr_t data = ap->a_data;
716         struct thread *p = curthread;
717         struct drm_device *dev = drm_get_device_from_kdev(kdev);
718         int retcode = 0;
719         drm_ioctl_desc_t *ioctl;
720         int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
721         int nr = DRM_IOCTL_NR(cmd);
722         int is_driver_ioctl = 0;
723         struct drm_file *file_priv;
724
725         file_priv = drm_find_file_by_proc(dev, p);
726         if (!file_priv) {
727                 DRM_ERROR("can't find authenticator\n");
728                 return EINVAL;
729         }
730
731         atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
732         ++file_priv->ioctl_count;
733
734         DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
735             DRM_CURRENTPID, cmd, nr, (long)dev->device,
736             file_priv->authenticated);
737
738         switch (cmd) {
739         case FIONBIO:
740         case FIOASYNC:
741                 return 0;
742
743         case FIOSETOWN:
744                 return fsetown(*(int *)data, &dev->buf_sigio);
745
746         case FIOGETOWN:
747                 *(int *) data = fgetown(dev->buf_sigio);
748                 return 0;
749         }
750
751         if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
752                 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
753                 return EINVAL;
754         }
755
756         ioctl = &drm_ioctls[nr];
757         /* It's not a core DRM ioctl, try driver-specific. */
758         if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
759                 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
760                 nr -= DRM_COMMAND_BASE;
761                 if (nr > dev->driver->max_ioctl) {
762                         DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
763                             nr, dev->driver->max_ioctl);
764                         return EINVAL;
765                 }
766                 ioctl = &dev->driver->ioctls[nr];
767                 is_driver_ioctl = 1;
768         }
769         func = ioctl->func;
770
771         if (func == NULL) {
772                 DRM_DEBUG("no function\n");
773                 return EINVAL;
774         }
775
776         if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
777             ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
778             ((ioctl->flags & DRM_MASTER) && !file_priv->master))
779                 return EACCES;
780
781         if (is_driver_ioctl) {
782                 DRM_LOCK();
783                 /* shared code returns -errno */
784                 retcode = -func(dev, data, file_priv);
785                 DRM_UNLOCK();
786         } else {
787                 retcode = func(dev, data, file_priv);
788         }
789
790         if (retcode != 0)
791                 DRM_DEBUG("    returning %d\n", retcode);
792
793         return retcode;
794 }
795
796 drm_local_map_t *drm_getsarea(struct drm_device *dev)
797 {
798         drm_local_map_t *map;
799
800         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
801         TAILQ_FOREACH(map, &dev->maplist, link) {
802                 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
803                         return map;
804         }
805
806         return NULL;
807 }
808
809 #if DRM_LINUX
810
811 #include <sys/sysproto.h>
812
813 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
814
815 #define LINUX_IOCTL_DRM_MIN             0x6400
816 #define LINUX_IOCTL_DRM_MAX             0x64ff
817
818 static linux_ioctl_function_t drm_linux_ioctl;
819 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 
820     LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
821
822 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, 
823     linux_ioctl_register_handler, &drm_handler);
824 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, 
825     linux_ioctl_unregister_handler, &drm_handler);
826
827 /* The bits for in/out are switched on Linux */
828 #define LINUX_IOC_IN    IOC_OUT
829 #define LINUX_IOC_OUT   IOC_IN
830
831 static int
832 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
833 {
834         int error;
835         int cmd = args->cmd;
836
837         args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
838         if (cmd & LINUX_IOC_IN)
839                 args->cmd |= IOC_IN;
840         if (cmd & LINUX_IOC_OUT)
841                 args->cmd |= IOC_OUT;
842         
843         error = ioctl(p, (struct ioctl_args *)args);
844
845         return error;
846 }
847 #endif /* DRM_LINUX */