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 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 /** @file drm_drv.c
35 * The catch-all file for DRM device support, including module setup/teardown,
36 * open/close, and ioctl dispatch.
37 */
38
39
40 #include <sys/limits.h>
41 #include "dev/drm/drmP.h"
42 #include "dev/drm/drm.h"
43 #include "dev/drm/drm_sarea.h"
44
45 #ifdef DRM_DEBUG_DEFAULT_ON
46 int drm_debug_flag = 1;
47 #else
48 int drm_debug_flag = 0;
49 #endif
50
51 static int drm_load(struct drm_device *dev);
52 static void drm_unload(struct drm_device *dev);
53 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
54 drm_pci_id_list_t *idlist);
55
56 MODULE_VERSION(drm, 1);
57 MODULE_DEPEND(drm, agp, 1, 1, 1);
58 MODULE_DEPEND(drm, pci, 1, 1, 1);
59 MODULE_DEPEND(drm, mem, 1, 1, 1);
60
61 static drm_ioctl_desc_t drm_ioctls[256] = {
62 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
63 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
65 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
66 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
67 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
68 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
69 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
70
71 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
72 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
73 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
75
76 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
77 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
78
79 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
80 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
81
82 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
83 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
84 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
85 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
86 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
87 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
89
90 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
91 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
92
93 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
94 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
95
96 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
97
98 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
99 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
100 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
101 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
102 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
103 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
104
105 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
106
107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
115
116 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
118 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
119 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
120 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
121 };
122
123 static struct cdevsw drm_cdevsw = {
124 .d_version = D_VERSION,
125 .d_open = drm_open,
126 .d_read = drm_read,
127 .d_ioctl = drm_ioctl,
128 .d_poll = drm_poll,
129 .d_mmap = drm_mmap,
130 .d_name = "drm",
131 .d_flags = D_TRACKCLOSE
132 };
133
134 static int drm_msi = 1; /* Enable by default. */
135 TUNABLE_INT("hw.drm.msi", &drm_msi);
136 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
137 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
138 "Enable MSI interrupts for drm devices");
139
140 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
141 {0x8086, 0x2772}, /* Intel i945G */ \
142 {0x8086, 0x27A2}, /* Intel i945GM */ \
143 {0x8086, 0x27AE}, /* Intel i945GME */ \
144 {0, 0}
145 };
146
drm_msi_is_blacklisted(int vendor,int device)147 static int drm_msi_is_blacklisted(int vendor, int device)
148 {
149 int i = 0;
150
151 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
152 if ((drm_msi_blacklist[i].vendor == vendor) &&
153 (drm_msi_blacklist[i].device == device)) {
154 return 1;
155 }
156 }
157
158 return 0;
159 }
160
drm_probe(device_t kdev,drm_pci_id_list_t * idlist)161 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
162 {
163 drm_pci_id_list_t *id_entry;
164 int vendor, device;
165 #if __FreeBSD_version < 700010
166 device_t realdev;
167
168 if (!strcmp(device_get_name(kdev), "drmsub"))
169 realdev = device_get_parent(kdev);
170 else
171 realdev = kdev;
172 vendor = pci_get_vendor(realdev);
173 device = pci_get_device(realdev);
174 #else
175 vendor = pci_get_vendor(kdev);
176 device = pci_get_device(kdev);
177 #endif
178
179 if (pci_get_class(kdev) != PCIC_DISPLAY
180 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
181 return ENXIO;
182
183 id_entry = drm_find_description(vendor, device, idlist);
184 if (id_entry != NULL) {
185 if (!device_get_desc(kdev)) {
186 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
187 device_set_desc(kdev, id_entry->name);
188 }
189 return 0;
190 }
191
192 return ENXIO;
193 }
194
drm_attach(device_t kdev,drm_pci_id_list_t * idlist)195 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
196 {
197 struct drm_device *dev;
198 drm_pci_id_list_t *id_entry;
199 int unit, msicount;
200
201 unit = device_get_unit(kdev);
202 dev = device_get_softc(kdev);
203
204 #if __FreeBSD_version < 700010
205 if (!strcmp(device_get_name(kdev), "drmsub"))
206 dev->device = device_get_parent(kdev);
207 else
208 dev->device = kdev;
209 #else
210 dev->device = kdev;
211 #endif
212 dev->devnode = make_dev(&drm_cdevsw,
213 0,
214 DRM_DEV_UID,
215 DRM_DEV_GID,
216 DRM_DEV_MODE,
217 "dri/card%d", unit);
218 dev->devnode->si_drv1 = dev;
219
220 #if __FreeBSD_version >= 700053
221 dev->pci_domain = pci_get_domain(dev->device);
222 #else
223 dev->pci_domain = 0;
224 #endif
225 dev->pci_bus = pci_get_bus(dev->device);
226 dev->pci_slot = pci_get_slot(dev->device);
227 dev->pci_func = pci_get_function(dev->device);
228
229 dev->pci_vendor = pci_get_vendor(dev->device);
230 dev->pci_device = pci_get_device(dev->device);
231
232 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
233 if (drm_msi &&
234 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
235 msicount = pci_msi_count(dev->device);
236 DRM_DEBUG("MSI count = %d\n", msicount);
237 if (msicount > 1)
238 msicount = 1;
239
240 if (pci_alloc_msi(dev->device, &msicount) == 0) {
241 DRM_INFO("MSI enabled %d message(s)\n",
242 msicount);
243 dev->msi_enabled = 1;
244 dev->irqrid = 1;
245 }
246 }
247
248 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
249 &dev->irqrid, RF_SHAREABLE);
250 if (!dev->irqr) {
251 return ENOENT;
252 }
253
254 dev->irq = (int) rman_get_start(dev->irqr);
255 }
256
257 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
258 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
259 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
260 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
261
262 id_entry = drm_find_description(dev->pci_vendor,
263 dev->pci_device, idlist);
264 dev->id_entry = id_entry;
265
266 return drm_load(dev);
267 }
268
drm_detach(device_t kdev)269 int drm_detach(device_t kdev)
270 {
271 struct drm_device *dev;
272
273 dev = device_get_softc(kdev);
274
275 drm_unload(dev);
276
277 if (dev->irqr) {
278 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
279 dev->irqr);
280
281 if (dev->msi_enabled) {
282 pci_release_msi(dev->device);
283 DRM_INFO("MSI released\n");
284 }
285 }
286
287 return 0;
288 }
289
290 #ifndef DRM_DEV_NAME
291 #define DRM_DEV_NAME "drm"
292 #endif
293
294 devclass_t drm_devclass;
295
drm_find_description(int vendor,int device,drm_pci_id_list_t * idlist)296 drm_pci_id_list_t *drm_find_description(int vendor, int device,
297 drm_pci_id_list_t *idlist)
298 {
299 int i = 0;
300
301 for (i = 0; idlist[i].vendor != 0; i++) {
302 if ((idlist[i].vendor == vendor) &&
303 ((idlist[i].device == device) ||
304 (idlist[i].device == 0))) {
305 return &idlist[i];
306 }
307 }
308 return NULL;
309 }
310
drm_firstopen(struct drm_device * dev)311 static int drm_firstopen(struct drm_device *dev)
312 {
313 drm_local_map_t *map;
314 int i;
315
316 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
317
318 /* prebuild the SAREA */
319 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
320 _DRM_CONTAINS_LOCK, &map);
321 if (i != 0)
322 return i;
323
324 if (dev->driver->firstopen)
325 dev->driver->firstopen(dev);
326
327 dev->buf_use = 0;
328
329 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
330 i = drm_dma_setup(dev);
331 if (i != 0)
332 return i;
333 }
334
335 for (i = 0; i < DRM_HASH_SIZE; i++) {
336 dev->magiclist[i].head = NULL;
337 dev->magiclist[i].tail = NULL;
338 }
339
340 dev->lock.lock_queue = 0;
341 dev->irq_enabled = 0;
342 dev->context_flag = 0;
343 dev->last_context = 0;
344 dev->if_version = 0;
345
346 dev->buf_sigio = NULL;
347
348 DRM_DEBUG("\n");
349
350 return 0;
351 }
352
drm_lastclose(struct drm_device * dev)353 static int drm_lastclose(struct drm_device *dev)
354 {
355 drm_magic_entry_t *pt, *next;
356 drm_local_map_t *map, *mapsave;
357 int i;
358
359 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
360
361 DRM_DEBUG("\n");
362
363 if (dev->driver->lastclose != NULL)
364 dev->driver->lastclose(dev);
365
366 if (dev->irq_enabled)
367 drm_irq_uninstall(dev);
368
369 if (dev->unique) {
370 free(dev->unique, DRM_MEM_DRIVER);
371 dev->unique = NULL;
372 dev->unique_len = 0;
373 }
374 /* Clear pid list */
375 for (i = 0; i < DRM_HASH_SIZE; i++) {
376 for (pt = dev->magiclist[i].head; pt; pt = next) {
377 next = pt->next;
378 free(pt, DRM_MEM_MAGIC);
379 }
380 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
381 }
382
383 DRM_UNLOCK();
384 drm_drawable_free_all(dev);
385 DRM_LOCK();
386
387 /* Clear AGP information */
388 if (dev->agp) {
389 drm_agp_mem_t *entry;
390 drm_agp_mem_t *nexte;
391
392 /* Remove AGP resources, but leave dev->agp intact until
393 * drm_unload is called.
394 */
395 for (entry = dev->agp->memory; entry; entry = nexte) {
396 nexte = entry->next;
397 if (entry->bound)
398 drm_agp_unbind_memory(entry->handle);
399 drm_agp_free_memory(entry->handle);
400 free(entry, DRM_MEM_AGPLISTS);
401 }
402 dev->agp->memory = NULL;
403
404 if (dev->agp->acquired)
405 drm_agp_release(dev);
406
407 dev->agp->acquired = 0;
408 dev->agp->enabled = 0;
409 }
410 if (dev->sg != NULL) {
411 drm_sg_cleanup(dev->sg);
412 dev->sg = NULL;
413 }
414
415 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
416 if (!(map->flags & _DRM_DRIVER))
417 drm_rmmap(dev, map);
418 }
419
420 drm_dma_takedown(dev);
421 if (dev->lock.hw_lock) {
422 dev->lock.hw_lock = NULL; /* SHM removed */
423 dev->lock.file_priv = NULL;
424 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
425 }
426
427 return 0;
428 }
429
drm_load(struct drm_device * dev)430 static int drm_load(struct drm_device *dev)
431 {
432 int i, retcode;
433
434 DRM_DEBUG("\n");
435
436 TAILQ_INIT(&dev->maplist);
437 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
438 if (dev->map_unrhdr == NULL) {
439 DRM_ERROR("Couldn't allocate map number allocator\n");
440 return EINVAL;
441 }
442
443
444 drm_mem_init();
445 drm_sysctl_init(dev);
446 TAILQ_INIT(&dev->files);
447
448 dev->counters = 6;
449 dev->types[0] = _DRM_STAT_LOCK;
450 dev->types[1] = _DRM_STAT_OPENS;
451 dev->types[2] = _DRM_STAT_CLOSES;
452 dev->types[3] = _DRM_STAT_IOCTLS;
453 dev->types[4] = _DRM_STAT_LOCKS;
454 dev->types[5] = _DRM_STAT_UNLOCKS;
455
456 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
457 atomic_set(&dev->counts[i], 0);
458
459 if (dev->driver->load != NULL) {
460 DRM_LOCK();
461 /* Shared code returns -errno. */
462 retcode = -dev->driver->load(dev,
463 dev->id_entry->driver_private);
464 if (pci_enable_busmaster(dev->device))
465 DRM_ERROR("Request to enable bus-master failed.\n");
466 DRM_UNLOCK();
467 if (retcode != 0)
468 goto error;
469 }
470
471 if (drm_core_has_AGP(dev)) {
472 if (drm_device_is_agp(dev))
473 dev->agp = drm_agp_init();
474 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
475 dev->agp == NULL) {
476 DRM_ERROR("Card isn't AGP, or couldn't initialize "
477 "AGP.\n");
478 retcode = ENOMEM;
479 goto error;
480 }
481 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) {
482 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
483 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
484 dev->agp->mtrr = 1;
485 }
486 }
487
488 retcode = drm_ctxbitmap_init(dev);
489 if (retcode != 0) {
490 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
491 goto error;
492 }
493
494 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
495 if (dev->drw_unrhdr == NULL) {
496 DRM_ERROR("Couldn't allocate drawable number allocator\n");
497 goto error;
498 }
499
500 DRM_INFO("Initialized %s %d.%d.%d %s\n",
501 dev->driver->name,
502 dev->driver->major,
503 dev->driver->minor,
504 dev->driver->patchlevel,
505 dev->driver->date);
506
507 return 0;
508
509 error:
510 drm_sysctl_cleanup(dev);
511 DRM_LOCK();
512 drm_lastclose(dev);
513 DRM_UNLOCK();
514 destroy_dev(dev->devnode);
515
516 mtx_destroy(&dev->drw_lock);
517 mtx_destroy(&dev->vbl_lock);
518 mtx_destroy(&dev->irq_lock);
519 mtx_destroy(&dev->dev_lock);
520
521 return retcode;
522 }
523
drm_unload(struct drm_device * dev)524 static void drm_unload(struct drm_device *dev)
525 {
526 int i;
527
528 DRM_DEBUG("\n");
529
530 drm_sysctl_cleanup(dev);
531 destroy_dev(dev->devnode);
532
533 drm_ctxbitmap_cleanup(dev);
534
535 if (dev->agp && dev->agp->mtrr) {
536 int __unused retcode;
537
538 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
539 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
540 DRM_DEBUG("mtrr_del = %d", retcode);
541 }
542
543 drm_vblank_cleanup(dev);
544
545 DRM_LOCK();
546 drm_lastclose(dev);
547 DRM_UNLOCK();
548
549 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
550 * worried about resource consumption while the DRM is inactive (between
551 * lastclose and firstopen or unload) because these aren't actually
552 * taking up KVA, just keeping the PCI resource allocated.
553 */
554 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
555 if (dev->pcir[i] == NULL)
556 continue;
557 bus_release_resource(dev->device, SYS_RES_MEMORY,
558 dev->pcirid[i], dev->pcir[i]);
559 dev->pcir[i] = NULL;
560 }
561
562 if (dev->agp) {
563 free(dev->agp, DRM_MEM_AGPLISTS);
564 dev->agp = NULL;
565 }
566
567 if (dev->driver->unload != NULL) {
568 DRM_LOCK();
569 dev->driver->unload(dev);
570 DRM_UNLOCK();
571 }
572
573 delete_unrhdr(dev->drw_unrhdr);
574 delete_unrhdr(dev->map_unrhdr);
575
576 drm_mem_uninit();
577
578 if (pci_disable_busmaster(dev->device))
579 DRM_ERROR("Request to disable bus-master failed.\n");
580
581 mtx_destroy(&dev->drw_lock);
582 mtx_destroy(&dev->vbl_lock);
583 mtx_destroy(&dev->irq_lock);
584 mtx_destroy(&dev->dev_lock);
585 }
586
drm_version(struct drm_device * dev,void * data,struct drm_file * file_priv)587 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
588 {
589 struct drm_version *version = data;
590 int len;
591
592 #define DRM_COPY( name, value ) \
593 len = strlen( value ); \
594 if ( len > name##_len ) len = name##_len; \
595 name##_len = strlen( value ); \
596 if ( len && name ) { \
597 if ( DRM_COPY_TO_USER( name, value, len ) ) \
598 return EFAULT; \
599 }
600
601 version->version_major = dev->driver->major;
602 version->version_minor = dev->driver->minor;
603 version->version_patchlevel = dev->driver->patchlevel;
604
605 DRM_COPY(version->name, dev->driver->name);
606 DRM_COPY(version->date, dev->driver->date);
607 DRM_COPY(version->desc, dev->driver->desc);
608
609 return 0;
610 }
611
drm_open(struct cdev * kdev,int flags,int fmt,DRM_STRUCTPROC * p)612 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
613 {
614 struct drm_device *dev = NULL;
615 int retcode = 0;
616
617 dev = kdev->si_drv1;
618
619 DRM_DEBUG("open_count = %d\n", dev->open_count);
620
621 retcode = drm_open_helper(kdev, flags, fmt, p, dev);
622
623 if (!retcode) {
624 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
625 DRM_LOCK();
626 device_busy(dev->device);
627 if (!dev->open_count++)
628 retcode = drm_firstopen(dev);
629 DRM_UNLOCK();
630 }
631
632 return retcode;
633 }
634
drm_close(void * data)635 void drm_close(void *data)
636 {
637 struct drm_file *file_priv = data;
638 struct drm_device *dev = file_priv->dev;
639 int retcode = 0;
640
641 DRM_DEBUG("open_count = %d\n", dev->open_count);
642
643 DRM_LOCK();
644
645 if (dev->driver->preclose != NULL)
646 dev->driver->preclose(dev, file_priv);
647
648 /* ========================================================
649 * Begin inline drm_release
650 */
651
652 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
653 DRM_CURRENTPID, (long)dev->device, dev->open_count);
654
655 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
656 && dev->lock.file_priv == file_priv) {
657 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
658 DRM_CURRENTPID,
659 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
660 if (dev->driver->reclaim_buffers_locked != NULL)
661 dev->driver->reclaim_buffers_locked(dev, file_priv);
662
663 drm_lock_free(&dev->lock,
664 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
665
666 /* FIXME: may require heavy-handed reset of
667 hardware at this point, possibly
668 processed via a callback to the X
669 server. */
670 } else if (dev->driver->reclaim_buffers_locked != NULL &&
671 dev->lock.hw_lock != NULL) {
672 /* The lock is required to reclaim buffers */
673 for (;;) {
674 if (!dev->lock.hw_lock) {
675 /* Device has been unregistered */
676 retcode = EINTR;
677 break;
678 }
679 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
680 dev->lock.file_priv = file_priv;
681 dev->lock.lock_time = jiffies;
682 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
683 break; /* Got lock */
684 }
685 /* Contention */
686 retcode = mtx_sleep((void *)&dev->lock.lock_queue,
687 &dev->dev_lock, PCATCH, "drmlk2", 0);
688 if (retcode)
689 break;
690 }
691 if (retcode == 0) {
692 dev->driver->reclaim_buffers_locked(dev, file_priv);
693 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
694 }
695 }
696
697 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
698 !dev->driver->reclaim_buffers_locked)
699 drm_reclaim_buffers(dev, file_priv);
700
701 funsetown(&dev->buf_sigio);
702
703 if (dev->driver->postclose != NULL)
704 dev->driver->postclose(dev, file_priv);
705 TAILQ_REMOVE(&dev->files, file_priv, link);
706 free(file_priv, DRM_MEM_FILES);
707
708 /* ========================================================
709 * End inline drm_release
710 */
711
712 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
713 device_unbusy(dev->device);
714 if (--dev->open_count == 0) {
715 retcode = drm_lastclose(dev);
716 }
717
718 DRM_UNLOCK();
719 }
720
721 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
722 */
drm_ioctl(struct cdev * kdev,u_long cmd,caddr_t data,int flags,DRM_STRUCTPROC * p)723 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
724 DRM_STRUCTPROC *p)
725 {
726 struct drm_device *dev = drm_get_device_from_kdev(kdev);
727 int retcode = 0;
728 drm_ioctl_desc_t *ioctl;
729 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
730 int nr = DRM_IOCTL_NR(cmd);
731 int is_driver_ioctl = 0;
732 struct drm_file *file_priv;
733
734 retcode = devfs_get_cdevpriv((void **)&file_priv);
735 if (retcode != 0) {
736 DRM_ERROR("can't find authenticator\n");
737 return EINVAL;
738 }
739
740 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
741 ++file_priv->ioctl_count;
742
743 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
744 DRM_CURRENTPID, cmd, nr, (long)dev->device,
745 file_priv->authenticated);
746
747 switch (cmd) {
748 case FIONBIO:
749 case FIOASYNC:
750 return 0;
751
752 case FIOSETOWN:
753 return fsetown(*(int *)data, &dev->buf_sigio);
754
755 case FIOGETOWN:
756 *(int *) data = fgetown(&dev->buf_sigio);
757 return 0;
758 }
759
760 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
761 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
762 return EINVAL;
763 }
764
765 ioctl = &drm_ioctls[nr];
766 /* It's not a core DRM ioctl, try driver-specific. */
767 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
768 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
769 nr -= DRM_COMMAND_BASE;
770 if (nr > dev->driver->max_ioctl) {
771 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
772 nr, dev->driver->max_ioctl);
773 return EINVAL;
774 }
775 ioctl = &dev->driver->ioctls[nr];
776 is_driver_ioctl = 1;
777 }
778 func = ioctl->func;
779
780 if (func == NULL) {
781 DRM_DEBUG("no function\n");
782 return EINVAL;
783 }
784
785 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
786 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
787 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
788 return EACCES;
789
790 if (is_driver_ioctl) {
791 DRM_LOCK();
792 /* shared code returns -errno */
793 retcode = -func(dev, data, file_priv);
794 DRM_UNLOCK();
795 } else {
796 retcode = func(dev, data, file_priv);
797 }
798
799 if (retcode != 0)
800 DRM_DEBUG(" returning %d\n", retcode);
801
802 return retcode;
803 }
804
drm_getsarea(struct drm_device * dev)805 drm_local_map_t *drm_getsarea(struct drm_device *dev)
806 {
807 drm_local_map_t *map;
808
809 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
810 TAILQ_FOREACH(map, &dev->maplist, link) {
811 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
812 return map;
813 }
814
815 return NULL;
816 }
817
818 #if DRM_LINUX
819
820 #include <sys/sysproto.h>
821
822 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
823
824 #define LINUX_IOCTL_DRM_MIN 0x6400
825 #define LINUX_IOCTL_DRM_MAX 0x64ff
826
827 static linux_ioctl_function_t drm_linux_ioctl;
828 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
829 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
830
831 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
832 linux_ioctl_register_handler, &drm_handler);
833 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
834 linux_ioctl_unregister_handler, &drm_handler);
835
836 /* The bits for in/out are switched on Linux */
837 #define LINUX_IOC_IN IOC_OUT
838 #define LINUX_IOC_OUT IOC_IN
839
840 static int
drm_linux_ioctl(DRM_STRUCTPROC * p,struct linux_ioctl_args * args)841 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
842 {
843 int error;
844 int cmd = args->cmd;
845
846 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
847 if (cmd & LINUX_IOC_IN)
848 args->cmd |= IOC_IN;
849 if (cmd & LINUX_IOC_OUT)
850 args->cmd |= IOC_OUT;
851
852 error = ioctl(p, (struct ioctl_args *)args);
853
854 return error;
855 }
856 #endif /* DRM_LINUX */
857