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 <[email protected]>
27 * Gareth Hughes <[email protected]>
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 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device");
136 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RDTUN, &drm_msi, 1,
137 "Enable MSI interrupts for drm devices");
138
139 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
140 {0x8086, 0x2772}, /* Intel i945G */ \
141 {0x8086, 0x27A2}, /* Intel i945GM */ \
142 {0x8086, 0x27AE}, /* Intel i945GME */ \
143 {0, 0}
144 };
145
drm_msi_is_blacklisted(int vendor,int device)146 static int drm_msi_is_blacklisted(int vendor, int device)
147 {
148 int i = 0;
149
150 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
151 if ((drm_msi_blacklist[i].vendor == vendor) &&
152 (drm_msi_blacklist[i].device == device)) {
153 return 1;
154 }
155 }
156
157 return 0;
158 }
159
drm_probe(device_t kdev,drm_pci_id_list_t * idlist)160 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
161 {
162 drm_pci_id_list_t *id_entry;
163 int vendor, device;
164 vendor = pci_get_vendor(kdev);
165 device = pci_get_device(kdev);
166
167 if (pci_get_class(kdev) != PCIC_DISPLAY
168 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
169 return ENXIO;
170
171 id_entry = drm_find_description(vendor, device, idlist);
172 if (id_entry != NULL) {
173 if (!device_get_desc(kdev)) {
174 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
175 device_set_desc(kdev, id_entry->name);
176 }
177 DRM_OBSOLETE(kdev);
178 return BUS_PROBE_GENERIC;
179 }
180
181 return ENXIO;
182 }
183
drm_attach(device_t kdev,drm_pci_id_list_t * idlist)184 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
185 {
186 struct drm_device *dev;
187 drm_pci_id_list_t *id_entry;
188 int unit, msicount;
189
190 unit = device_get_unit(kdev);
191 dev = device_get_softc(kdev);
192
193 dev->device = kdev;
194 dev->devnode = make_dev(&drm_cdevsw,
195 0,
196 DRM_DEV_UID,
197 DRM_DEV_GID,
198 DRM_DEV_MODE,
199 "dri/card%d", unit);
200 dev->devnode->si_drv1 = dev;
201
202 dev->pci_domain = pci_get_domain(dev->device);
203 dev->pci_bus = pci_get_bus(dev->device);
204 dev->pci_slot = pci_get_slot(dev->device);
205 dev->pci_func = pci_get_function(dev->device);
206
207 dev->pci_vendor = pci_get_vendor(dev->device);
208 dev->pci_device = pci_get_device(dev->device);
209
210 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
211 if (drm_msi &&
212 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
213 msicount = pci_msi_count(dev->device);
214 DRM_DEBUG("MSI count = %d\n", msicount);
215 if (msicount > 1)
216 msicount = 1;
217
218 if (pci_alloc_msi(dev->device, &msicount) == 0) {
219 DRM_INFO("MSI enabled %d message(s)\n",
220 msicount);
221 dev->msi_enabled = 1;
222 dev->irqrid = 1;
223 }
224 }
225
226 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
227 &dev->irqrid, RF_SHAREABLE);
228 if (!dev->irqr) {
229 return ENOENT;
230 }
231
232 dev->irq = (int) rman_get_start(dev->irqr);
233 }
234
235 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
236 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
237 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
238 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
239
240 id_entry = drm_find_description(dev->pci_vendor,
241 dev->pci_device, idlist);
242 dev->id_entry = id_entry;
243
244 return drm_load(dev);
245 }
246
drm_detach(device_t kdev)247 int drm_detach(device_t kdev)
248 {
249 struct drm_device *dev;
250
251 dev = device_get_softc(kdev);
252
253 drm_unload(dev);
254
255 if (dev->irqr) {
256 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
257 dev->irqr);
258
259 if (dev->msi_enabled) {
260 pci_release_msi(dev->device);
261 DRM_INFO("MSI released\n");
262 }
263 }
264
265 return 0;
266 }
267
268 #ifndef DRM_DEV_NAME
269 #define DRM_DEV_NAME "drm"
270 #endif
271
272 devclass_t drm_devclass;
273
drm_find_description(int vendor,int device,drm_pci_id_list_t * idlist)274 drm_pci_id_list_t *drm_find_description(int vendor, int device,
275 drm_pci_id_list_t *idlist)
276 {
277 int i = 0;
278
279 for (i = 0; idlist[i].vendor != 0; i++) {
280 if ((idlist[i].vendor == vendor) &&
281 ((idlist[i].device == device) ||
282 (idlist[i].device == 0))) {
283 return &idlist[i];
284 }
285 }
286 return NULL;
287 }
288
drm_firstopen(struct drm_device * dev)289 static int drm_firstopen(struct drm_device *dev)
290 {
291 drm_local_map_t *map;
292 int i;
293
294 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
295
296 /* prebuild the SAREA */
297 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
298 _DRM_CONTAINS_LOCK, &map);
299 if (i != 0)
300 return i;
301
302 if (dev->driver->firstopen)
303 dev->driver->firstopen(dev);
304
305 dev->buf_use = 0;
306
307 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
308 i = drm_dma_setup(dev);
309 if (i != 0)
310 return i;
311 }
312
313 for (i = 0; i < DRM_HASH_SIZE; i++) {
314 dev->magiclist[i].head = NULL;
315 dev->magiclist[i].tail = NULL;
316 }
317
318 dev->lock.lock_queue = 0;
319 dev->irq_enabled = 0;
320 dev->context_flag = 0;
321 dev->last_context = 0;
322 dev->if_version = 0;
323
324 dev->buf_sigio = NULL;
325
326 DRM_DEBUG("\n");
327
328 return 0;
329 }
330
drm_lastclose(struct drm_device * dev)331 static int drm_lastclose(struct drm_device *dev)
332 {
333 drm_magic_entry_t *pt, *next;
334 drm_local_map_t *map, *mapsave;
335 int i;
336
337 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
338
339 DRM_DEBUG("\n");
340
341 if (dev->driver->lastclose != NULL)
342 dev->driver->lastclose(dev);
343
344 if (dev->irq_enabled)
345 drm_irq_uninstall(dev);
346
347 if (dev->unique) {
348 free(dev->unique, DRM_MEM_DRIVER);
349 dev->unique = NULL;
350 dev->unique_len = 0;
351 }
352 /* Clear pid list */
353 for (i = 0; i < DRM_HASH_SIZE; i++) {
354 for (pt = dev->magiclist[i].head; pt; pt = next) {
355 next = pt->next;
356 free(pt, DRM_MEM_MAGIC);
357 }
358 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
359 }
360
361 DRM_UNLOCK();
362 drm_drawable_free_all(dev);
363 DRM_LOCK();
364
365 /* Clear AGP information */
366 if (dev->agp) {
367 drm_agp_mem_t *entry;
368 drm_agp_mem_t *nexte;
369
370 /* Remove AGP resources, but leave dev->agp intact until
371 * drm_unload is called.
372 */
373 for (entry = dev->agp->memory; entry; entry = nexte) {
374 nexte = entry->next;
375 if (entry->bound)
376 drm_agp_unbind_memory(entry->handle);
377 drm_agp_free_memory(entry->handle);
378 free(entry, DRM_MEM_AGPLISTS);
379 }
380 dev->agp->memory = NULL;
381
382 if (dev->agp->acquired)
383 drm_agp_release(dev);
384
385 dev->agp->acquired = 0;
386 dev->agp->enabled = 0;
387 }
388 if (dev->sg != NULL) {
389 drm_sg_cleanup(dev->sg);
390 dev->sg = NULL;
391 }
392
393 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
394 if (!(map->flags & _DRM_DRIVER))
395 drm_rmmap(dev, map);
396 }
397
398 drm_dma_takedown(dev);
399 if (dev->lock.hw_lock) {
400 dev->lock.hw_lock = NULL; /* SHM removed */
401 dev->lock.file_priv = NULL;
402 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
403 }
404
405 return 0;
406 }
407
drm_load(struct drm_device * dev)408 static int drm_load(struct drm_device *dev)
409 {
410 int i, retcode;
411
412 DRM_DEBUG("\n");
413
414 TAILQ_INIT(&dev->maplist);
415 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL);
416 if (dev->map_unrhdr == NULL) {
417 DRM_ERROR("Couldn't allocate map number allocator\n");
418 return EINVAL;
419 }
420
421
422 drm_mem_init();
423 drm_sysctl_init(dev);
424 TAILQ_INIT(&dev->files);
425
426 dev->counters = 6;
427 dev->types[0] = _DRM_STAT_LOCK;
428 dev->types[1] = _DRM_STAT_OPENS;
429 dev->types[2] = _DRM_STAT_CLOSES;
430 dev->types[3] = _DRM_STAT_IOCTLS;
431 dev->types[4] = _DRM_STAT_LOCKS;
432 dev->types[5] = _DRM_STAT_UNLOCKS;
433
434 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
435 atomic_set(&dev->counts[i], 0);
436
437 if (dev->driver->load != NULL) {
438 DRM_LOCK();
439 /* Shared code returns -errno. */
440 retcode = -dev->driver->load(dev,
441 dev->id_entry->driver_private);
442 if (pci_enable_busmaster(dev->device))
443 DRM_ERROR("Request to enable bus-master failed.\n");
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 && dev->agp->info.ai_aperture_base != 0) {
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 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
473 if (dev->drw_unrhdr == NULL) {
474 DRM_ERROR("Couldn't allocate drawable number allocator\n");
475 goto error;
476 }
477
478 DRM_INFO("Initialized %s %d.%d.%d %s\n",
479 dev->driver->name,
480 dev->driver->major,
481 dev->driver->minor,
482 dev->driver->patchlevel,
483 dev->driver->date);
484
485 return 0;
486
487 error:
488 drm_sysctl_cleanup(dev);
489 DRM_LOCK();
490 drm_lastclose(dev);
491 DRM_UNLOCK();
492 destroy_dev(dev->devnode);
493
494 mtx_destroy(&dev->drw_lock);
495 mtx_destroy(&dev->vbl_lock);
496 mtx_destroy(&dev->irq_lock);
497 mtx_destroy(&dev->dev_lock);
498
499 return retcode;
500 }
501
drm_unload(struct drm_device * dev)502 static void drm_unload(struct drm_device *dev)
503 {
504 int i;
505
506 DRM_DEBUG("\n");
507
508 drm_sysctl_cleanup(dev);
509 destroy_dev(dev->devnode);
510
511 drm_ctxbitmap_cleanup(dev);
512
513 if (dev->agp && dev->agp->mtrr) {
514 int __unused retcode;
515
516 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
517 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
518 DRM_DEBUG("mtrr_del = %d", retcode);
519 }
520
521 drm_vblank_cleanup(dev);
522
523 DRM_LOCK();
524 drm_lastclose(dev);
525 DRM_UNLOCK();
526
527 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
528 * worried about resource consumption while the DRM is inactive (between
529 * lastclose and firstopen or unload) because these aren't actually
530 * taking up KVA, just keeping the PCI resource allocated.
531 */
532 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
533 if (dev->pcir[i] == NULL)
534 continue;
535 bus_release_resource(dev->device, SYS_RES_MEMORY,
536 dev->pcirid[i], dev->pcir[i]);
537 dev->pcir[i] = NULL;
538 }
539
540 if (dev->agp) {
541 free(dev->agp, DRM_MEM_AGPLISTS);
542 dev->agp = NULL;
543 }
544
545 if (dev->driver->unload != NULL) {
546 DRM_LOCK();
547 dev->driver->unload(dev);
548 DRM_UNLOCK();
549 }
550
551 delete_unrhdr(dev->drw_unrhdr);
552 delete_unrhdr(dev->map_unrhdr);
553
554 drm_mem_uninit();
555
556 if (pci_disable_busmaster(dev->device))
557 DRM_ERROR("Request to disable bus-master failed.\n");
558
559 mtx_destroy(&dev->drw_lock);
560 mtx_destroy(&dev->vbl_lock);
561 mtx_destroy(&dev->irq_lock);
562 mtx_destroy(&dev->dev_lock);
563 }
564
drm_version(struct drm_device * dev,void * data,struct drm_file * file_priv)565 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
566 {
567 struct drm_version *version = data;
568 int len;
569
570 #define DRM_COPY( name, value ) \
571 len = strlen( value ); \
572 if ( len > name##_len ) len = name##_len; \
573 name##_len = strlen( value ); \
574 if ( len && name ) { \
575 if ( DRM_COPY_TO_USER( name, value, len ) ) \
576 return EFAULT; \
577 }
578
579 version->version_major = dev->driver->major;
580 version->version_minor = dev->driver->minor;
581 version->version_patchlevel = dev->driver->patchlevel;
582
583 DRM_COPY(version->name, dev->driver->name);
584 DRM_COPY(version->date, dev->driver->date);
585 DRM_COPY(version->desc, dev->driver->desc);
586
587 return 0;
588 }
589
drm_open(struct cdev * kdev,int flags,int fmt,DRM_STRUCTPROC * p)590 int drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
591 {
592 struct drm_device *dev = NULL;
593 int retcode = 0;
594
595 dev = kdev->si_drv1;
596
597 DRM_DEBUG("open_count = %d\n", dev->open_count);
598
599 retcode = drm_open_helper(kdev, flags, fmt, p, dev);
600
601 if (!retcode) {
602 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
603 DRM_LOCK();
604 device_busy(dev->device);
605 if (!dev->open_count++)
606 retcode = drm_firstopen(dev);
607 DRM_UNLOCK();
608 }
609
610 return retcode;
611 }
612
drm_close(void * data)613 void drm_close(void *data)
614 {
615 struct drm_file *file_priv = data;
616 struct drm_device *dev = file_priv->dev;
617 int retcode = 0;
618
619 DRM_DEBUG("open_count = %d\n", dev->open_count);
620
621 DRM_LOCK();
622
623 if (dev->driver->preclose != NULL)
624 dev->driver->preclose(dev, file_priv);
625
626 /* ========================================================
627 * Begin inline drm_release
628 */
629
630 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
631 DRM_CURRENTPID, (long)dev->device, dev->open_count);
632
633 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
634 && dev->lock.file_priv == file_priv) {
635 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
636 DRM_CURRENTPID,
637 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
638 if (dev->driver->reclaim_buffers_locked != NULL)
639 dev->driver->reclaim_buffers_locked(dev, file_priv);
640
641 drm_lock_free(&dev->lock,
642 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
643
644 /* FIXME: may require heavy-handed reset of
645 hardware at this point, possibly
646 processed via a callback to the X
647 server. */
648 } else if (dev->driver->reclaim_buffers_locked != NULL &&
649 dev->lock.hw_lock != NULL) {
650 /* The lock is required to reclaim buffers */
651 for (;;) {
652 if (!dev->lock.hw_lock) {
653 /* Device has been unregistered */
654 retcode = EINTR;
655 break;
656 }
657 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
658 dev->lock.file_priv = file_priv;
659 dev->lock.lock_time = jiffies;
660 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
661 break; /* Got lock */
662 }
663 /* Contention */
664 retcode = mtx_sleep((void *)&dev->lock.lock_queue,
665 &dev->dev_lock, PCATCH, "drmlk2", 0);
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
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 */
drm_ioctl(struct cdev * kdev,u_long cmd,caddr_t data,int flags,DRM_STRUCTPROC * p)701 int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
702 DRM_STRUCTPROC *p)
703 {
704 struct drm_device *dev = drm_get_device_from_kdev(kdev);
705 int retcode = 0;
706 drm_ioctl_desc_t *ioctl;
707 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
708 int nr = DRM_IOCTL_NR(cmd);
709 int is_driver_ioctl = 0;
710 struct drm_file *file_priv;
711
712 retcode = devfs_get_cdevpriv((void **)&file_priv);
713 if (retcode != 0) {
714 DRM_ERROR("can't find authenticator\n");
715 return EINVAL;
716 }
717
718 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
719 ++file_priv->ioctl_count;
720
721 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
722 DRM_CURRENTPID, cmd, nr, (long)dev->device,
723 file_priv->authenticated);
724
725 switch (cmd) {
726 case FIONBIO:
727 case FIOASYNC:
728 return 0;
729
730 case FIOSETOWN:
731 return fsetown(*(int *)data, &dev->buf_sigio);
732
733 case FIOGETOWN:
734 *(int *) data = fgetown(&dev->buf_sigio);
735 return 0;
736 }
737
738 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
739 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
740 return EINVAL;
741 }
742
743 ioctl = &drm_ioctls[nr];
744 /* It's not a core DRM ioctl, try driver-specific. */
745 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
746 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
747 nr -= DRM_COMMAND_BASE;
748 if (nr >= dev->driver->max_ioctl) {
749 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
750 nr, dev->driver->max_ioctl);
751 return EINVAL;
752 }
753 ioctl = &dev->driver->ioctls[nr];
754 is_driver_ioctl = 1;
755 }
756 func = ioctl->func;
757
758 if (func == NULL) {
759 DRM_DEBUG("no function\n");
760 return EINVAL;
761 }
762
763 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
764 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
765 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
766 return EACCES;
767
768 if (is_driver_ioctl) {
769 DRM_LOCK();
770 /* shared code returns -errno */
771 retcode = -func(dev, data, file_priv);
772 DRM_UNLOCK();
773 } else {
774 retcode = func(dev, data, file_priv);
775 }
776
777 if (retcode != 0)
778 DRM_DEBUG(" returning %d\n", retcode);
779
780 return retcode;
781 }
782
drm_getsarea(struct drm_device * dev)783 drm_local_map_t *drm_getsarea(struct drm_device *dev)
784 {
785 drm_local_map_t *map;
786
787 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
788 TAILQ_FOREACH(map, &dev->maplist, link) {
789 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
790 return map;
791 }
792
793 return NULL;
794 }
795
796 #if DRM_LINUX
797
798 #include <sys/sysproto.h>
799
800 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
801
802 #define LINUX_IOCTL_DRM_MIN 0x6400
803 #define LINUX_IOCTL_DRM_MAX 0x64ff
804
805 static linux_ioctl_function_t drm_linux_ioctl;
806 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
807 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
808
809 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
810 linux_ioctl_register_handler, &drm_handler);
811 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
812 linux_ioctl_unregister_handler, &drm_handler);
813
814 /* The bits for in/out are switched on Linux */
815 #define LINUX_IOC_IN IOC_OUT
816 #define LINUX_IOC_OUT IOC_IN
817
818 static int
drm_linux_ioctl(DRM_STRUCTPROC * p,struct linux_ioctl_args * args)819 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
820 {
821 int error;
822 int cmd = args->cmd;
823
824 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
825 if (cmd & LINUX_IOC_IN)
826 args->cmd |= IOC_IN;
827 if (cmd & LINUX_IOC_OUT)
828 args->cmd |= IOC_OUT;
829
830 error = ioctl(p, (struct ioctl_args *)args);
831
832 return error;
833 }
834 #endif /* DRM_LINUX */
835