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Sync sys/queue.h with FreeBSD:
[dragonfly.git] / sys / dev / drm / drm_drv.c
blobfab780590f270dfdd3357a7db8bf126ad5bececf
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_read = drm_read,
126 .d_ioctl = drm_ioctl,
127 .d_poll = drm_poll,
128 .d_mmap = drm_mmap
129 };
130
131 int drm_msi = 1; /* Enable by default. */
132 TUNABLE_INT("hw.drm.msi", &drm_msi);
133
134 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
135 {0x8086, 0x2772}, /* Intel i945G */ \
136 {0x8086, 0x27A2}, /* Intel i945GM */ \
137 {0x8086, 0x27AE}, /* Intel i945GME */ \
138 {0, 0}
139 };
140
141 static int drm_msi_is_blacklisted(int vendor, int device)
142 {
143 int i = 0;
144
145 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
146 if ((drm_msi_blacklist[i].vendor == vendor) &&
147 (drm_msi_blacklist[i].device == device)) {
148 return 1;
149 }
150 }
151
152 return 0;
153 }
154
155 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
156 {
157 drm_pci_id_list_t *id_entry;
158 int vendor, device;
159 device_t realdev;
160
161 if (!strcmp(device_get_name(kdev), "drmsub"))
162 realdev = device_get_parent(kdev);
163 else
164 realdev = kdev;
165 vendor = pci_get_vendor(realdev);
166 device = pci_get_device(realdev);
167
168 #if 0 /* XXX */
169 if (pci_get_class(kdev) != PCIC_DISPLAY
170 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
171 return ENXIO;
172 #endif
173
174 id_entry = drm_find_description(vendor, device, idlist);
175 if (id_entry != NULL) {
176 if (!device_get_desc(kdev)) {
177 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
178 device_set_desc(kdev, id_entry->name);
179 }
180 return 0;
181 }
182
183 return ENXIO;
184 }
185
186 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
187 {
188 struct drm_device *dev;
189 drm_pci_id_list_t *id_entry;
190 int unit;
191 #if 0
192 int msicount;
193 #endif
194
195 unit = device_get_unit(kdev);
196 dev = device_get_softc(kdev);
197
198 if (!strcmp(device_get_name(kdev), "drmsub"))
199 dev->device = device_get_parent(kdev);
200 else
201 dev->device = kdev;
202
203 dev_ops_add(&drm_cdevsw, -1, unit);
204 dev->devnode = make_dev(&drm_cdevsw,
205 unit,
206 DRM_DEV_UID,
207 DRM_DEV_GID,
208 DRM_DEV_MODE,
209 "dri/card%d", unit);
210
211 dev->pci_domain = 0;
212 dev->pci_bus = pci_get_bus(dev->device);
213 dev->pci_slot = pci_get_slot(dev->device);
214 dev->pci_func = pci_get_function(dev->device);
215
216 dev->pci_vendor = pci_get_vendor(dev->device);
217 dev->pci_device = pci_get_device(dev->device);
218
219 if (drm_msi &&
220 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
221 #if 0
222 msicount = pci_msi_count(dev->device);
223 DRM_DEBUG("MSI count = %d\n", msicount);
224 if (msicount > 1)
225 msicount = 1;
226
227 if (pci_alloc_msi(dev->device, &msicount) == 0) {
228 DRM_INFO("MSI enabled %d message(s)\n", msicount);
229 dev->msi_enabled = 1;
230 dev->irqrid = 1;
231 }
232 #endif
233 }
234
235 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
236 &dev->irqrid, RF_SHAREABLE);
237 if (!dev->irqr) {
238 return ENOENT;
239 }
240
241 dev->irq = (int) rman_get_start(dev->irqr);
242
243 DRM_SPININIT(&dev->dev_lock, "drmdev");
244 lwkt_serialize_init(&dev->irq_lock);
245 DRM_SPININIT(&dev->vbl_lock, "drmvbl");
246 DRM_SPININIT(&dev->drw_lock, "drmdrw");
247
248 id_entry = drm_find_description(dev->pci_vendor,
249 dev->pci_device, idlist);
250 dev->id_entry = id_entry;
251
252 return drm_load(dev);
253 }
254
255 int drm_detach(device_t kdev)
256 {
257 struct drm_device *dev;
258
259 dev = device_get_softc(kdev);
260
261 drm_unload(dev);
262
263 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
264
265 #if 0
266 if (dev->msi_enabled) {
267 pci_release_msi(dev->device);
268 DRM_INFO("MSI released\n");
269 }
270 #endif
271
272 return 0;
273 }
274
275 #ifndef DRM_DEV_NAME
276 #define DRM_DEV_NAME "drm"
277 #endif
278
279 devclass_t drm_devclass;
280
281 drm_pci_id_list_t *drm_find_description(int vendor, int device,
282 drm_pci_id_list_t *idlist)
283 {
284 int i = 0;
285
286 for (i = 0; idlist[i].vendor != 0; i++) {
287 if ((idlist[i].vendor == vendor) &&
288 ((idlist[i].device == device) ||
289 (idlist[i].device == 0))) {
290 return &idlist[i];
291 }
292 }
293 return NULL;
294 }
295
296 static int drm_firstopen(struct drm_device *dev)
297 {
298 drm_local_map_t *map;
299 int i;
300
301 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
302
303 /* prebuild the SAREA */
304 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
305 _DRM_CONTAINS_LOCK, &map);
306 if (i != 0)
307 return i;
308
309 if (dev->driver->firstopen)
310 dev->driver->firstopen(dev);
311
312 dev->buf_use = 0;
313
314 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
315 i = drm_dma_setup(dev);
316 if (i != 0)
317 return i;
318 }
319
320 for (i = 0; i < DRM_HASH_SIZE; i++) {
321 dev->magiclist[i].head = NULL;
322 dev->magiclist[i].tail = NULL;
323 }
324
325 dev->lock.lock_queue = 0;
326 dev->irq_enabled = 0;
327 dev->context_flag = 0;
328 dev->last_context = 0;
329 dev->if_version = 0;
330
331 dev->buf_sigio = NULL;
332
333 DRM_DEBUG("\n");
334
335 return 0;
336 }
337
338 static int drm_lastclose(struct drm_device *dev)
339 {
340 drm_magic_entry_t *pt, *next;
341 drm_local_map_t *map, *mapsave;
342 int i;
343
344 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
345
346 DRM_DEBUG("\n");
347
348 if (dev->driver->lastclose != NULL)
349 dev->driver->lastclose(dev);
350
351 if (dev->irq_enabled)
352 drm_irq_uninstall(dev);
353
354 if (dev->unique) {
355 free(dev->unique, DRM_MEM_DRIVER);
356 dev->unique = NULL;
357 dev->unique_len = 0;
358 }
359 /* Clear pid list */
360 for (i = 0; i < DRM_HASH_SIZE; i++) {
361 for (pt = dev->magiclist[i].head; pt; pt = next) {
362 next = pt->next;
363 free(pt, DRM_MEM_MAGIC);
364 }
365 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
366 }
367
368 DRM_UNLOCK();
369 drm_drawable_free_all(dev);
370 DRM_LOCK();
371
372 /* Clear AGP information */
373 if (dev->agp) {
374 drm_agp_mem_t *entry;
375 drm_agp_mem_t *nexte;
376
377 /* Remove AGP resources, but leave dev->agp intact until
378 * drm_unload is called.
379 */
380 for (entry = dev->agp->memory; entry; entry = nexte) {
381 nexte = entry->next;
382 if (entry->bound)
383 drm_agp_unbind_memory(entry->handle);
384 drm_agp_free_memory(entry->handle);
385 free(entry, DRM_MEM_AGPLISTS);
386 }
387 dev->agp->memory = NULL;
388
389 if (dev->agp->acquired)
390 drm_agp_release(dev);
391
392 dev->agp->acquired = 0;
393 dev->agp->enabled = 0;
394 }
395 if (dev->sg != NULL) {
396 drm_sg_cleanup(dev->sg);
397 dev->sg = NULL;
398 }
399
400 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
401 if (!(map->flags & _DRM_DRIVER))
402 drm_rmmap(dev, map);
403 }
404
405 drm_dma_takedown(dev);
406 if (dev->lock.hw_lock) {
407 dev->lock.hw_lock = NULL; /* SHM removed */
408 dev->lock.file_priv = NULL;
409 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
410 }
411
412 return 0;
413 }
414
415 static int drm_load(struct drm_device *dev)
416 {
417 int i, retcode;
418
419 DRM_DEBUG("\n");
420
421 TAILQ_INIT(&dev->maplist);
422
423 drm_mem_init();
424 drm_sysctl_init(dev);
425 TAILQ_INIT(&dev->files);
426
427 dev->counters = 6;
428 dev->types[0] = _DRM_STAT_LOCK;
429 dev->types[1] = _DRM_STAT_OPENS;
430 dev->types[2] = _DRM_STAT_CLOSES;
431 dev->types[3] = _DRM_STAT_IOCTLS;
432 dev->types[4] = _DRM_STAT_LOCKS;
433 dev->types[5] = _DRM_STAT_UNLOCKS;
434
435 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
436 atomic_set(&dev->counts[i], 0);
437
438 if (dev->driver->load != NULL) {
439 DRM_LOCK();
440 /* Shared code returns -errno. */
441 retcode = -dev->driver->load(dev,
442 dev->id_entry->driver_private);
443 pci_enable_busmaster(dev->device);
444 DRM_UNLOCK();
445 if (retcode != 0)
446 goto error;
447 }
448
449 if (drm_core_has_AGP(dev)) {
450 if (drm_device_is_agp(dev))
451 dev->agp = drm_agp_init();
452 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
453 dev->agp == NULL) {
454 DRM_ERROR("Card isn't AGP, or couldn't initialize "
455 "AGP.\n");
456 retcode = ENOMEM;
457 goto error;
458 }
459 if (dev->agp != NULL) {
460 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
461 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
462 dev->agp->mtrr = 1;
463 }
464 }
465
466 retcode = drm_ctxbitmap_init(dev);
467 if (retcode != 0) {
468 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
469 goto error;
470 }
471
472 DRM_INFO("Initialized %s %d.%d.%d %s\n",
473 dev->driver->name,
474 dev->driver->major,
475 dev->driver->minor,
476 dev->driver->patchlevel,
477 dev->driver->date);
478
479 return 0;
480
481 error:
482 drm_sysctl_cleanup(dev);
483 DRM_LOCK();
484 drm_lastclose(dev);
485 DRM_UNLOCK();
486 destroy_dev(dev->devnode);
487
488 DRM_SPINUNINIT(&dev->drw_lock);
489 DRM_SPINUNINIT(&dev->vbl_lock);
490 DRM_SPINUNINIT(&dev->dev_lock);
491
492 return retcode;
493 }
494
495 static void drm_unload(struct drm_device *dev)
496 {
497 int i;
498
499 DRM_DEBUG("\n");
500
501 drm_sysctl_cleanup(dev);
502 destroy_dev(dev->devnode);
503
504 drm_ctxbitmap_cleanup(dev);
505
506 if (dev->agp && dev->agp->mtrr) {
507 int __unused retcode;
508
509 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
510 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
511 DRM_DEBUG("mtrr_del = %d", retcode);
512 }
513
514 drm_vblank_cleanup(dev);
515
516 DRM_LOCK();
517 drm_lastclose(dev);
518 DRM_UNLOCK();
519
520 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
521 * worried about resource consumption while the DRM is inactive (between
522 * lastclose and firstopen or unload) because these aren't actually
523 * taking up KVA, just keeping the PCI resource allocated.
524 */
525 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
526 if (dev->pcir[i] == NULL)
527 continue;
528 bus_release_resource(dev->device, SYS_RES_MEMORY,
529 dev->pcirid[i], dev->pcir[i]);
530 dev->pcir[i] = NULL;
531 }
532
533 if (dev->agp) {
534 free(dev->agp, DRM_MEM_AGPLISTS);
535 dev->agp = NULL;
536 }
537
538 if (dev->driver->unload != NULL) {
539 DRM_LOCK();
540 dev->driver->unload(dev);
541 DRM_UNLOCK();
542 }
543
544 drm_mem_uninit();
545
546 pci_disable_busmaster(dev->device);
547
548 DRM_SPINUNINIT(&dev->drw_lock);
549 DRM_SPINUNINIT(&dev->vbl_lock);
550 DRM_SPINUNINIT(&dev->dev_lock);
551 }
552
553 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
554 {
555 struct drm_version *version = data;
556 int len;
557
558 #define DRM_COPY( name, value ) \
559 len = strlen( value ); \
560 if ( len > name##_len ) len = name##_len; \
561 name##_len = strlen( value ); \
562 if ( len && name ) { \
563 if ( DRM_COPY_TO_USER( name, value, len ) ) \
564 return EFAULT; \
565 }
566
567 version->version_major = dev->driver->major;
568 version->version_minor = dev->driver->minor;
569 version->version_patchlevel = dev->driver->patchlevel;
570
571 DRM_COPY(version->name, dev->driver->name);
572 DRM_COPY(version->date, dev->driver->date);
573 DRM_COPY(version->desc, dev->driver->desc);
574
575 return 0;
576 }
577
578 int drm_open(struct dev_open_args *ap)
579 {
580 struct cdev *kdev = ap->a_head.a_dev;
581 int flags = ap->a_oflags;
582 int fmt = 0;
583 struct thread *p = curthread;
584 struct drm_device *dev = NULL;
585 int retcode = 0;
586
587 dev = DRIVER_SOFTC(minor(kdev));
588
589 DRM_DEBUG("open_count = %d\n", dev->open_count);
590
591 retcode = drm_open_helper(kdev, flags, fmt, p, dev);
592
593 if (!retcode) {
594 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
595 DRM_LOCK();
596 device_busy(dev->device);
597 if (!dev->open_count++)
598 retcode = drm_firstopen(dev);
599 DRM_UNLOCK();
600 }
601
602 return retcode;
603 }
604
605 void drm_close(void *data)
606 {
607 struct drm_file *file_priv = data;
608 struct drm_device *dev = file_priv->dev;
609 int retcode = 0;
610
611 DRM_DEBUG("open_count = %d\n", dev->open_count);
612
613 DRM_LOCK();
614
615 if (--file_priv->refs != 0)
616 goto done;
617
618 if (dev->driver->preclose != NULL)
619 dev->driver->preclose(dev, file_priv);
620
621 /* ========================================================
622 * Begin inline drm_release
623 */
624
625 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
626 DRM_CURRENTPID, (long)dev->device, dev->open_count);
627
628 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
629 && dev->lock.file_priv == file_priv) {
630 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
631 DRM_CURRENTPID,
632 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
633 if (dev->driver->reclaim_buffers_locked != NULL)
634 dev->driver->reclaim_buffers_locked(dev, file_priv);
635
636 drm_lock_free(&dev->lock,
637 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
638
639 /* FIXME: may require heavy-handed reset of
640 hardware at this point, possibly
641 processed via a callback to the X
642 server. */
643 } else if (dev->driver->reclaim_buffers_locked != NULL &&
644 dev->lock.hw_lock != NULL) {
645 /* The lock is required to reclaim buffers */
646 for (;;) {
647 if (!dev->lock.hw_lock) {
648 /* Device has been unregistered */
649 retcode = EINTR;
650 break;
651 }
652 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
653 dev->lock.file_priv = file_priv;
654 dev->lock.lock_time = jiffies;
655 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
656 break; /* Got lock */
657 }
658 /* Contention */
659 crit_enter();
660 tsleep_interlock((void *)&dev->lock.lock_queue);
661 DRM_UNLOCK();
662 retcode = tsleep((void *)&dev->lock.lock_queue,
663 PCATCH, "drmlk2", 0);
664 crit_exit();
665 DRM_LOCK();
666 if (retcode)
667 break;
668 }
669 if (retcode == 0) {
670 dev->driver->reclaim_buffers_locked(dev, file_priv);
671 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
672 }
673 }
674
675 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
676 !dev->driver->reclaim_buffers_locked)
677 drm_reclaim_buffers(dev, file_priv);
678
679 funsetown(dev->buf_sigio);
680
681 if (dev->driver->postclose != NULL)
682 dev->driver->postclose(dev, file_priv);
683 TAILQ_REMOVE(&dev->files, file_priv, link);
684 free(file_priv, DRM_MEM_FILES);
685
686 /* ========================================================
687 * End inline drm_release
688 */
689 done:
690 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
691 device_unbusy(dev->device);
692 if (--dev->open_count == 0) {
693 retcode = drm_lastclose(dev);
694 }
695
696 DRM_UNLOCK();
697 }
698
699 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
700 */
701 int drm_ioctl(struct dev_ioctl_args *ap)
702 {
703 struct cdev *kdev = ap->a_head.a_dev;
704 u_long cmd = ap->a_cmd;
705 caddr_t data = ap->a_data;
706 struct thread *p = curthread;
707 struct drm_device *dev = drm_get_device_from_kdev(kdev);
708 int retcode = 0;
709 drm_ioctl_desc_t *ioctl;
710 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
711 int nr = DRM_IOCTL_NR(cmd);
712 int is_driver_ioctl = 0;
713 struct drm_file *file_priv;
714
715 file_priv = drm_find_file_by_proc(dev, p);
716 if (!file_priv) {
717 DRM_ERROR("can't find authenticator\n");
718 return EINVAL;
719 }
720
721 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
722 ++file_priv->ioctl_count;
723
724 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
725 DRM_CURRENTPID, cmd, nr, (long)dev->device,
726 file_priv->authenticated);
727
728 switch (cmd) {
729 case FIONBIO:
730 case FIOASYNC:
731 return 0;
732
733 case FIOSETOWN:
734 return fsetown(*(int *)data, &dev->buf_sigio);
735
736 case FIOGETOWN:
737 *(int *) data = fgetown(dev->buf_sigio);
738 return 0;
739 }
740
741 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
742 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
743 return EINVAL;
744 }
745
746 ioctl = &drm_ioctls[nr];
747 /* It's not a core DRM ioctl, try driver-specific. */
748 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
749 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
750 nr -= DRM_COMMAND_BASE;
751 if (nr > dev->driver->max_ioctl) {
752 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
753 nr, dev->driver->max_ioctl);
754 return EINVAL;
755 }
756 ioctl = &dev->driver->ioctls[nr];
757 is_driver_ioctl = 1;
758 }
759 func = ioctl->func;
760
761 if (func == NULL) {
762 DRM_DEBUG("no function\n");
763 return EINVAL;
764 }
765
766 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
767 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
768 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
769 return EACCES;
770
771 if (is_driver_ioctl) {
772 DRM_LOCK();
773 /* shared code returns -errno */
774 retcode = -func(dev, data, file_priv);
775 DRM_UNLOCK();
776 } else {
777 retcode = func(dev, data, file_priv);
778 }
779
780 if (retcode != 0)
781 DRM_DEBUG(" returning %d\n", retcode);
782
783 return retcode;
784 }
785
786 drm_local_map_t *drm_getsarea(struct drm_device *dev)
787 {
788 drm_local_map_t *map;
789
790 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
791 TAILQ_FOREACH(map, &dev->maplist, link) {
792 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
793 return map;
794 }
795
796 return NULL;
797 }
798
799 #if DRM_LINUX
800
801 #include <sys/sysproto.h>
802
803 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
804
805 #define LINUX_IOCTL_DRM_MIN 0x6400
806 #define LINUX_IOCTL_DRM_MAX 0x64ff
807
808 static linux_ioctl_function_t drm_linux_ioctl;
809 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
810 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
811
812 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
813 linux_ioctl_register_handler, &drm_handler);
814 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
815 linux_ioctl_unregister_handler, &drm_handler);
816
817 /* The bits for in/out are switched on Linux */
818 #define LINUX_IOC_IN IOC_OUT
819 #define LINUX_IOC_OUT IOC_IN
820
821 static int
822 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
823 {
824 int error;
825 int cmd = args->cmd;
826
827 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
828 if (cmd & LINUX_IOC_IN)
829 args->cmd |= IOC_IN;
830 if (cmd & LINUX_IOC_OUT)
831 args->cmd |= IOC_OUT;
832
833 error = ioctl(p, (struct ioctl_args *)args);
834
835 return error;
836 }
837 #endif /* DRM_LINUX */
DragonFly BSD