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[netbsd-mini2440.git] / sys / external / bsd / drm / dist / bsd-core / drm_drv.c
blobe1874874d9f422fdba2d586f695e14754c6f5dec
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
37 #if defined(__FreeBSD__)
38 #include <sys/limits.h>
39 #elif defined(__NetBSD__)
40 #include <sys/module.h>
41 #endif
42 #include "drmP.h"
43 #include "drm.h"
44 #include "drm_sarea.h"
45
46 #ifdef DRM_DEBUG_DEFAULT_ON
47 int drm_debug_flag = 1;
48 #else
49 int drm_debug_flag = 0;
50 #endif
51
52 static int drm_load(struct drm_device *dev);
53 static void drm_unload(struct drm_device *dev);
54 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
55 drm_pci_id_list_t *idlist);
56
57 #if defined(__FreeBSD__)
58 #define DRIVER_SOFTC(unit) \
59 ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
60
61 MODULE_VERSION(drm, 1);
62 MODULE_DEPEND(drm, agp, 1, 1, 1);
63 MODULE_DEPEND(drm, pci, 1, 1, 1);
64 MODULE_DEPEND(drm, mem, 1, 1, 1);
65 #elif defined(__NetBSD__)
66 #define DRIVER_SOFTC(kdev) drm_get_device_from_kdev(kdev)
67 #endif
68
69 static drm_ioctl_desc_t drm_ioctls[256] = {
70 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
71 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
72 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
73 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
75 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
76 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
77 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
78
79 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
80 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
81 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
82 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
83
84 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
85 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
86
87 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
89
90 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
91 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
92 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
93 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
94 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
95 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
96 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
97
98 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
99 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
100
101 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
102 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
103
104 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
105
106 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
107 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
108 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
109 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
110 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
111 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
112
113 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
114
115 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
118 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
120 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
121 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
122 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
123
124 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
125 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
126 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
127 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
128 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
129 };
130
131 #if defined(__FreeBSD__)
132 static struct cdevsw drm_cdevsw = {
133 .d_version = D_VERSION,
134 .d_open = drm_open,
135 .d_read = drm_read,
136 .d_ioctl = drm_ioctl,
137 .d_poll = drm_poll,
138 .d_mmap = drm_mmap,
139 .d_name = "drm",
140 .d_flags = D_TRACKCLOSE
141 };
142
143 int drm_msi = 1; /* Enable by default. */
144 TUNABLE_INT("hw.drm.msi", &drm_msi);
145
146 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
147 {0x8086, 0x2772}, /* Intel i945G */ \
148 {0x8086, 0x27A2}, /* Intel i945GM */ \
149 {0x8086, 0x27AE}, /* Intel i945GME */ \
150 {0, 0}
151 };
152
153 static int drm_msi_is_blacklisted(int vendor, int device)
154 {
155 int i = 0;
156
157 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
158 if ((drm_msi_blacklist[i].vendor == vendor) &&
159 (drm_msi_blacklist[i].device == device)) {
160 return 1;
161 }
162 }
163
164 return 0;
165 }
166
167 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
168 {
169 drm_pci_id_list_t *id_entry;
170 int vendor, device;
171 #if __FreeBSD_version < 700010
172 device_t realdev;
173
174 if (!strcmp(device_get_name(kdev), "drmsub"))
175 realdev = device_get_parent(kdev);
176 else
177 realdev = kdev;
178 vendor = pci_get_vendor(realdev);
179 device = pci_get_device(realdev);
180 #else
181 vendor = pci_get_vendor(kdev);
182 device = pci_get_device(kdev);
183 #endif
184
185 if (pci_get_class(kdev) != PCIC_DISPLAY
186 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
187 return ENXIO;
188
189 id_entry = drm_find_description(vendor, device, idlist);
190 if (id_entry != NULL) {
191 if (!device_get_desc(kdev)) {
192 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
193 device_set_desc(kdev, id_entry->name);
194 }
195 return 0;
196 }
197
198 return ENXIO;
199 }
200
201 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
202 {
203 struct drm_device *dev;
204 drm_pci_id_list_t *id_entry;
205 int unit, msicount;
206
207 unit = device_get_unit(kdev);
208 dev = device_get_softc(kdev);
209
210 #if __FreeBSD_version < 700010
211 if (!strcmp(device_get_name(kdev), "drmsub"))
212 dev->device = device_get_parent(kdev);
213 else
214 dev->device = kdev;
215 #else
216 dev->device = kdev;
217 #endif
218 dev->devnode = make_dev(&drm_cdevsw,
219 unit,
220 DRM_DEV_UID,
221 DRM_DEV_GID,
222 DRM_DEV_MODE,
223 "dri/card%d", unit);
224
225 #if __FreeBSD_version >= 700053
226 dev->pci_domain = pci_get_domain(dev->device);
227 #else
228 dev->pci_domain = 0;
229 #endif
230 dev->pci_bus = pci_get_bus(dev->device);
231 dev->pci_slot = pci_get_slot(dev->device);
232 dev->pci_func = pci_get_function(dev->device);
233
234 dev->pci_vendor = pci_get_vendor(dev->device);
235 dev->pci_device = pci_get_device(dev->device);
236
237 if (drm_msi &&
238 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
239 msicount = pci_msi_count(dev->device);
240 DRM_DEBUG("MSI count = %d\n", msicount);
241 if (msicount > 1)
242 msicount = 1;
243
244 if (pci_alloc_msi(dev->device, &msicount) == 0) {
245 DRM_INFO("MSI enabled %d message(s)\n", msicount);
246 dev->msi_enabled = 1;
247 dev->irqrid = 1;
248 }
249 }
250
251 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
252 &dev->irqrid, RF_SHAREABLE);
253 if (!dev->irqr) {
254 return ENOENT;
255 }
256
257 dev->irq = (int) rman_get_start(dev->irqr);
258
259 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
260 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
261 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
262 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
263
264 id_entry = drm_find_description(dev->pci_vendor,
265 dev->pci_device, idlist);
266 dev->id_entry = id_entry;
267
268 return drm_load(dev);
269 }
270
271 int drm_detach(device_t kdev)
272 {
273 struct drm_device *dev;
274
275 dev = device_get_softc(kdev);
276
277 drm_unload(dev);
278
279 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
280
281 if (dev->msi_enabled) {
282 pci_release_msi(dev->device);
283 DRM_INFO("MSI released\n");
284 }
285
286 return 0;
287 }
288
289 #ifndef DRM_DEV_NAME
290 #define DRM_DEV_NAME "drm"
291 #endif
292
293 devclass_t drm_devclass;
294
295 #elif defined(__NetBSD__)
296
297 /*
298 * Mapping from device minor to struct drm_device.
299 * This is needed, because each driver (radeon, i915, etc.) has its own
300 * _cd structure, so we can't just lookup from _cd with minor.
301 */
302 struct drm_device *drm_units[DRM_MAXUNITS];
303
304 struct cdevsw drm_cdevsw = {
305 drm_open,
306 drm_close,
307 drm_read,
308 nowrite,
309 drm_ioctl,
310 nostop,
311 notty,
312 drm_poll,
313 drm_mmap,
314 nokqfilter,
315 D_TTY | D_NEGOFFSAFE
316 };
317
318 int drm_refcnt = 0;
319
320 int
321 drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t *idlist)
322 {
323 drm_pci_id_list_t *id_entry;
324
325 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
326 PCI_PRODUCT(pa->pa_id), idlist);
327 if (id_entry != NULL) {
328 return 1;
329 }
330
331 return 0;
332 }
333
334 void
335 drm_attach(device_t kdev, struct pci_attach_args *pa, drm_pci_id_list_t *idlist)
336 {
337 device_t parent_dev;
338 struct drm_device *dev;
339 int unit, parent_unit;
340
341 unit = device_unit(kdev);
342 if (unit < 0 || unit >= DRM_MAXUNITS)
343 panic("drm_attach: device unit %d invalid", unit);
344 if (drm_units[unit] != NULL)
345 panic("drm_attach: unit %d already attached", unit);
346
347 /*
348 * this is kind of ugly but we fake up the pci "domain" by using
349 * our pci unit number, so, find our parent pci device's unit...
350 */
351 parent_dev = kdev;
352 do {
353 parent_dev = device_parent(parent_dev);
354 } while (parent_dev && !device_is_a(parent_dev, "pci"));
355 parent_unit = device_unit(parent_dev);
356 if (parent_unit < 0)
357 panic("drm_attach: device parent_unit %d invalid", parent_unit);
358
359 dev = device_private(kdev);
360 dev->device = kdev;
361 drm_units[unit] = dev;
362
363 for (unit = 0; unit < DRM_MAX_PCI_RESOURCE; unit++)
364 {
365 dev->pci_map_data[unit].mapped = 0;
366 dev->pci_map_data[unit].maptype =
367 pci_mapreg_type(pa->pa_pc, pa->pa_tag,
368 PCI_MAPREG_START + unit*4);
369 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag,
370 PCI_MAPREG_START + unit*4,
371 dev->pci_map_data[unit].maptype,
372 &(dev->pci_map_data[unit].base),
373 &(dev->pci_map_data[unit].size),
374 &(dev->pci_map_data[unit].flags)))
375 {
376 DRM_DEBUG("pci_mapreg info for %d failed\n",
377 PCI_MAPREG_START + unit*4);
378 dev->pci_map_data[unit].base = 0;
379 dev->pci_map_data[unit].size = 0;
380 }
381 if (dev->pci_map_data[unit].maptype == PCI_MAPREG_TYPE_MEM)
382 dev->pci_map_data[unit].flags |= BUS_SPACE_MAP_LINEAR;
383 if (dev->pci_map_data[unit].maptype ==
384 (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT))
385 dev->pci_map_data[unit].flags |= BUS_SPACE_MAP_LINEAR;
386 DRM_DEBUG("pci resource %d: type=%d, base=%lx, size=%zx, flags=%x\n",
387 unit, dev->pci_map_data[unit].maptype,
388 (unsigned long)dev->pci_map_data[unit].base,
389 dev->pci_map_data[unit].size,
390 dev->pci_map_data[unit].flags);
391 }
392 for (unit = 0; unit < DRM_MAX_PCI_RESOURCE; unit++) {
393 dev->agp_map_data[unit].mapped = 0;
394 dev->agp_map_data[unit].maptype = PCI_MAPREG_TYPE_MEM;
395 }
396
397 mutex_init(&dev->dev_lock, MUTEX_DEFAULT, IPL_NONE);
398 mutex_init(&dev->irq_lock, MUTEX_DEFAULT, IPL_VM);
399 mutex_init(&dev->vbl_lock, MUTEX_DEFAULT, IPL_NONE);
400 mutex_init(&dev->drw_lock, MUTEX_DEFAULT, IPL_NONE);
401
402 memcpy(&dev->pa, pa, sizeof(dev->pa));
403
404 dev->irq = pa->pa_intrline;
405 dev->pci_domain = parent_unit;
406 dev->pci_bus = pa->pa_bus;
407 dev->pci_slot = pa->pa_device;
408 dev->pci_func = pa->pa_function;
409 dev->pci_vendor = PCI_VENDOR(pa->pa_id);
410 dev->pci_device = PCI_PRODUCT(pa->pa_id);
411
412 dev->id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
413 PCI_PRODUCT(pa->pa_id), idlist);
414
415 aprint_normal(": %s\n", dev->id_entry->name);
416 drm_load(dev);
417 }
418
419 int
420 drm_detach(device_t self, int flags)
421 {
422 struct drm_device *dev = device_private(self);
423
424 /* XXX locking */
425 if (dev->open_count)
426 return EBUSY;
427
428 drm_unload(dev);
429
430 drm_units[device_unit(self)] = NULL;
431
432 free(dev->driver, DRM_MEM_DRIVER);
433
434 return 0;
435 }
436
437 #endif
438
439 drm_pci_id_list_t *drm_find_description(int vendor, int device,
440 drm_pci_id_list_t *idlist)
441 {
442 int i = 0;
443
444 for (i = 0; idlist[i].vendor != 0; i++) {
445 if ((idlist[i].vendor == vendor) &&
446 ((idlist[i].device == device) ||
447 (idlist[i].device == 0))) {
448 return &idlist[i];
449 }
450 }
451 return NULL;
452 }
453
454 static int drm_firstopen(struct drm_device *dev)
455 {
456 drm_local_map_t *map;
457 int i;
458
459 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
460
461 /* prebuild the SAREA */
462 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
463 _DRM_CONTAINS_LOCK, &map);
464 if (i != 0)
465 return i;
466
467 if (dev->driver->firstopen)
468 dev->driver->firstopen(dev);
469
470 dev->buf_use = 0;
471
472 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
473 i = drm_dma_setup(dev);
474 if (i != 0)
475 return i;
476 }
477
478 for (i = 0; i < DRM_HASH_SIZE; i++) {
479 dev->magiclist[i].head = NULL;
480 dev->magiclist[i].tail = NULL;
481 }
482
483 dev->lock.lock_queue = 0;
484 dev->irq_enabled = 0;
485 dev->context_flag = 0;
486 dev->last_context = 0;
487 dev->if_version = 0;
488
489 #if defined(__FreeBSD__)
490 dev->buf_sigio = NULL;
491 #elif defined(__NetBSD__)
492 dev->buf_pgid = 0;
493 #endif
494
495 DRM_DEBUG("\n");
496
497 return 0;
498 }
499
500 static int drm_lastclose(struct drm_device *dev)
501 {
502 drm_magic_entry_t *pt, *next;
503 drm_local_map_t *map, *mapsave;
504 int i;
505
506 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
507
508 DRM_DEBUG("\n");
509
510 if (dev->driver->lastclose != NULL)
511 dev->driver->lastclose(dev);
512
513 if (dev->irq_enabled)
514 drm_irq_uninstall(dev);
515
516 if (dev->unique) {
517 free(dev->unique, DRM_MEM_DRIVER);
518 dev->unique = NULL;
519 dev->unique_len = 0;
520 }
521 /* Clear pid list */
522 for (i = 0; i < DRM_HASH_SIZE; i++) {
523 for (pt = dev->magiclist[i].head; pt; pt = next) {
524 next = pt->next;
525 free(pt, DRM_MEM_MAGIC);
526 }
527 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
528 }
529
530 DRM_UNLOCK();
531 drm_drawable_free_all(dev);
532 DRM_LOCK();
533
534 /* Clear AGP information */
535 if (dev->agp) {
536 drm_agp_mem_t *entry;
537 drm_agp_mem_t *nexte;
538
539 /* Remove AGP resources, but leave dev->agp intact until
540 * drm_unload is called.
541 */
542 for (entry = dev->agp->memory; entry; entry = nexte) {
543 nexte = entry->next;
544 if (entry->bound)
545 drm_agp_unbind_memory(entry->handle);
546 drm_agp_free_memory(entry->handle);
547 free(entry, DRM_MEM_AGPLISTS);
548 }
549 dev->agp->memory = NULL;
550
551 if (dev->agp->acquired)
552 drm_agp_release(dev);
553
554 dev->agp->acquired = 0;
555 dev->agp->enabled = 0;
556 }
557 if (dev->sg != NULL) {
558 drm_sg_cleanup(dev->sg);
559 dev->sg = NULL;
560 }
561
562 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
563 if (!(map->flags & _DRM_DRIVER))
564 drm_rmmap(dev, map);
565 }
566
567 drm_dma_takedown(dev);
568 if (dev->lock.hw_lock) {
569 dev->lock.hw_lock = NULL; /* SHM removed */
570 dev->lock.file_priv = NULL;
571 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
572 }
573
574 return 0;
575 }
576
577 static int drm_load(struct drm_device *dev)
578 {
579 int i, retcode;
580
581 DRM_DEBUG("\n");
582
583 TAILQ_INIT(&dev->maplist);
584
585 drm_mem_init();
586 drm_sysctl_init(dev);
587 TAILQ_INIT(&dev->files);
588
589 dev->counters = 6;
590 dev->types[0] = _DRM_STAT_LOCK;
591 dev->types[1] = _DRM_STAT_OPENS;
592 dev->types[2] = _DRM_STAT_CLOSES;
593 dev->types[3] = _DRM_STAT_IOCTLS;
594 dev->types[4] = _DRM_STAT_LOCKS;
595 dev->types[5] = _DRM_STAT_UNLOCKS;
596
597 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
598 atomic_set(&dev->counts[i], 0);
599
600 if (dev->driver->load != NULL) {
601 DRM_LOCK();
602 /* Shared code returns -errno. */
603 retcode = -dev->driver->load(dev,
604 dev->id_entry->driver_private);
605 #if defined(__FreeBSD__)
606 if (pci_enable_busmaster(dev->device))
607 DRM_ERROR("Request to enable bus-master failed.\n");
608 #endif
609 DRM_UNLOCK();
610 if (retcode != 0)
611 goto error;
612 }
613
614 if (drm_core_has_AGP(dev)) {
615 if (drm_device_is_agp(dev))
616 dev->agp = drm_agp_init(dev);
617 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
618 dev->agp == NULL) {
619 DRM_ERROR("Card isn't AGP, or couldn't initialize "
620 "AGP.\n");
621 retcode = ENOMEM;
622 goto error;
623 }
624 if (dev->agp != NULL) {
625 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
626 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
627 dev->agp->mtrr = 1;
628 }
629 }
630
631 retcode = drm_ctxbitmap_init(dev);
632 if (retcode != 0) {
633 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
634 goto error;
635 }
636
637 #if defined(__FreeBSD__)
638 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
639 if (dev->drw_unrhdr == NULL) {
640 DRM_ERROR("Couldn't allocate drawable number allocator\n");
641 goto error;
642 }
643 #else
644 dev->drw_no = 0;
645 #endif
646
647 #if defined(__NetBSD__)
648 aprint_normal_dev(dev->device,
649 #else
650 DRM_INFO(
651 #endif
652 "Initialized %s %d.%d.%d %s\n",
653 dev->driver->name,
654 dev->driver->major,
655 dev->driver->minor,
656 dev->driver->patchlevel,
657 dev->driver->date);
658
659 return 0;
660
661 error:
662 #if defined(__FreeBSD__)
663 drm_sysctl_cleanup(dev);
664 #endif
665 DRM_LOCK();
666 drm_lastclose(dev);
667 DRM_UNLOCK();
668 #if defined(__FreeBSD__)
669 destroy_dev(dev->devnode);
670 #endif
671
672 DRM_SPINUNINIT(&dev->drw_lock);
673 DRM_SPINUNINIT(&dev->vbl_lock);
674 DRM_SPINUNINIT(&dev->irq_lock);
675 DRM_SPINUNINIT(&dev->dev_lock);
676
677 return retcode;
678 }
679
680 static void drm_unload(struct drm_device *dev)
681 {
682 #if defined(__FreeBSD__)
683 int i;
684 #endif
685
686 DRM_DEBUG("\n");
687
688 #if defined(__FreeBSD__)
689 drm_sysctl_cleanup(dev);
690 destroy_dev(dev->devnode);
691 #endif
692
693 drm_ctxbitmap_cleanup(dev);
694
695 if (dev->agp && dev->agp->mtrr) {
696 int __unused retcode;
697
698 retcode = drm_mtrr_del(0,
699 dev->agp->info.ai_aperture_base,
700 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
701 DRM_DEBUG("mtrr_del = %d", retcode);
702 }
703
704 DRM_LOCK();
705 drm_lastclose(dev);
706 DRM_UNLOCK();
707
708 drm_vblank_cleanup(dev);
709
710 #if defined(__FreeBSD__)
711 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
712 * worried about resource consumption while the DRM is inactive (between
713 * lastclose and firstopen or unload) because these aren't actually
714 * taking up KVA, just keeping the PCI resource allocated.
715 */
716 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
717 if (dev->pcir[i] == NULL)
718 continue;
719 bus_release_resource(dev->device, SYS_RES_MEMORY,
720 dev->pcirid[i], dev->pcir[i]);
721 dev->pcir[i] = NULL;
722 }
723 #endif
724
725 if (dev->agp) {
726 free(dev->agp, DRM_MEM_AGPLISTS);
727 dev->agp = NULL;
728 }
729
730 if (dev->driver->unload != NULL) {
731 DRM_LOCK();
732 dev->driver->unload(dev);
733 DRM_UNLOCK();
734 }
735
736 #if defined(__FreeBSD__)
737 delete_unrhdr(dev->drw_unrhdr);
738 #endif
739
740 drm_mem_uninit();
741
742 #if defined(__FreeBSD__)
743 if (pci_disable_busmaster(dev->device))
744 DRM_ERROR("Request to disable bus-master failed.\n");
745 #endif
746
747 DRM_SPINUNINIT(&dev->drw_lock);
748 DRM_SPINUNINIT(&dev->vbl_lock);
749 DRM_SPINUNINIT(&dev->irq_lock);
750 DRM_SPINUNINIT(&dev->dev_lock);
751 }
752
753 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
754 {
755 struct drm_version *drmvers = data;
756 int len;
757
758 #define DRM_COPY( name, value ) \
759 len = strlen( value ); \
760 if ( len > name##_len ) len = name##_len; \
761 name##_len = strlen( value ); \
762 if ( len && name ) { \
763 if ( DRM_COPY_TO_USER( name, value, len ) ) \
764 return EFAULT; \
765 }
766
767 drmvers->version_major = dev->driver->major;
768 drmvers->version_minor = dev->driver->minor;
769 drmvers->version_patchlevel = dev->driver->patchlevel;
770
771 DRM_COPY(drmvers->name, dev->driver->name);
772 DRM_COPY(drmvers->date, dev->driver->date);
773 DRM_COPY(drmvers->desc, dev->driver->desc);
774
775 return 0;
776 }
777
778 int drm_open(DRM_CDEV kdev, int flags, int fmt, DRM_STRUCTCDEVPROC *p)
779 {
780 struct drm_device *dev = NULL;
781 int retcode = 0;
782
783 #if defined(__FreeBSD__)
784 dev = DRIVER_SOFTC(dev2unit(kdev));
785 #elif defined(__NetBSD__)
786 dev = DRIVER_SOFTC(kdev);
787 if (dev == NULL)
788 return ENXIO;
789 dev->kdev = kdev;
790 #endif
791
792 DRM_DEBUG("open_count = %d\n", dev->open_count);
793
794 retcode = drm_open_helper(kdev, flags, fmt, DRM_CDEVPROC_REAL(p), dev);
795
796 if (!retcode) {
797 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
798 DRM_LOCK();
799 #if defined(__FreeBSD__)
800 device_busy(dev->device);
801 #endif
802 if (!dev->open_count++)
803 retcode = drm_firstopen(dev);
804 DRM_UNLOCK();
805 }
806
807 return retcode;
808 }
809
810 #if defined(__FreeBSD__)
811 void drm_close(void *data)
812 #elif defined(__NetBSD__)
813 int
814 drm_close(dev_t kdev, int flags, int fmt, struct lwp *l)
815 #endif
816 {
817 struct drm_file *file_priv;
818 struct drm_device *dev;
819 int retcode = 0;
820
821 #if defined(__FreeBSD__)
822 file_priv = data;
823 dev = file_priv->dev;
824 #elif defined(__NetBSD__)
825 dev = DRIVER_SOFTC(kdev);
826 #endif
827
828 DRM_DEBUG("open_count = %d\n", dev->open_count);
829
830 DRM_LOCK();
831
832 #if defined(__NetBSD__)
833 file_priv = drm_find_file_by_proc(dev, l->l_proc);
834 if (file_priv == NULL) {
835 DRM_UNLOCK();
836 DRM_ERROR("can't find authenticator\n");
837 return EINVAL;
838 }
839 #endif
840
841 if (dev->driver->preclose != NULL)
842 dev->driver->preclose(dev, file_priv);
843
844 /* ========================================================
845 * Begin inline drm_release
846 */
847
848 #if defined(__FreeBSD__)
849 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
850 DRM_CURRENTPID, (long)dev->device, dev->open_count);
851 #elif defined(__NetBSD__)
852 DRM_DEBUG("pid = %d, device = 0x%p, open_count = %d\n",
853 DRM_CURRENTPID, dev->device, dev->open_count);
854 #endif
855
856 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
857 && dev->lock.file_priv == file_priv) {
858 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
859 DRM_CURRENTPID,
860 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
861 if (dev->driver->reclaim_buffers_locked != NULL)
862 dev->driver->reclaim_buffers_locked(dev, file_priv);
863
864 drm_lock_free(&dev->lock,
865 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
866
867 /* FIXME: may require heavy-handed reset of
868 hardware at this point, possibly
869 processed via a callback to the X
870 server. */
871 } else if (dev->driver->reclaim_buffers_locked != NULL &&
872 dev->lock.hw_lock != NULL) {
873 /* The lock is required to reclaim buffers */
874 for (;;) {
875 if (!dev->lock.hw_lock) {
876 /* Device has been unregistered */
877 retcode = EINTR;
878 break;
879 }
880 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
881 dev->lock.file_priv = file_priv;
882 dev->lock.lock_time = jiffies;
883 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
884 break; /* Got lock */
885 }
886 /* Contention */
887 #if defined(__FreeBSD__)
888 retcode = mtx_sleep((void *)&dev->lock.lock_queue,
889 &dev->dev_lock, PCATCH, "drmlk2", 0);
890 #elif defined(__NetBSD__)
891 retcode = mtsleep((void *)&dev->lock.lock_queue,
892 PCATCH, "drmlk2", 0, &dev->dev_lock);
893 #endif
894 if (retcode)
895 break;
896 }
897 if (retcode == 0) {
898 dev->driver->reclaim_buffers_locked(dev, file_priv);
899 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
900 }
901 }
902
903 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
904 !dev->driver->reclaim_buffers_locked)
905 drm_reclaim_buffers(dev, file_priv);
906
907 #if defined(__FreeBSD__)
908 funsetown(&dev->buf_sigio);
909 #else
910 dev->buf_pgid = 0;
911 #endif
912
913 if (dev->driver->postclose != NULL)
914 dev->driver->postclose(dev, file_priv);
915 TAILQ_REMOVE(&dev->files, file_priv, link);
916 free(file_priv, DRM_MEM_FILES);
917
918 /* ========================================================
919 * End inline drm_release
920 */
921
922 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
923 #if defined(__FreeBSD__)
924 device_unbusy(dev->device);
925 #endif
926 #if defined(__NetBSD__)
927 /* On NetBSD, close will only be called once */
928 DRM_DEBUG("setting open_count %d to 1\n", (int)dev->open_count);
929 while (dev->open_count != 1) {
930 /*
931 * XXXMRG probably should assert that we are freeing
932 * one of these each time. i think.
933 */
934 if (!TAILQ_EMPTY(&dev->files)) {
935 file_priv = TAILQ_FIRST(&dev->files);
936 TAILQ_REMOVE(&dev->files, file_priv, link);
937 }
938 dev->open_count--;
939 }
940 #endif
941 if (--dev->open_count == 0) {
942 retcode = drm_lastclose(dev);
943 }
944
945 DRM_UNLOCK();
946
947 #if defined(__NetBSD__)
948 return retcode;
949 #endif
950 }
951
952 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
953 */
954 int drm_ioctl(DRM_CDEV kdev, u_long cmd, DRM_IOCTL_DATA data, int flags,
955 DRM_STRUCTCDEVPROC *p)
956 {
957 struct drm_device *dev = drm_get_device_from_kdev(kdev);
958 int retcode = 0;
959 drm_ioctl_desc_t *ioctl;
960 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
961 int nr = DRM_IOCTL_NR(cmd);
962 int is_driver_ioctl = 0;
963 struct drm_file *file_priv;
964
965 #if defined(__FreeBSD__)
966 retcode = devfs_get_cdevpriv((void **)&file_priv);
967 if (retcode != 0) {
968 DRM_ERROR("can't find authenticator\n");
969 return EINVAL;
970 }
971 #elif defined(__NetBSD__)
972 DRM_LOCK();
973 file_priv = drm_find_file_by_proc(dev, p->l_proc);
974 DRM_UNLOCK();
975 if (file_priv == NULL) {
976 DRM_ERROR("can't find authenticator\n");
977 return EINVAL;
978 }
979 #endif
980
981 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
982 ++file_priv->ioctl_count;
983
984 #if defined(__FreeBSD__)
985 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
986 DRM_CURRENTPID, cmd, nr, (long)dev->device,
987 file_priv->authenticated);
988 #elif defined(__NetBSD__)
989 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev %p, auth=%d\n",
990 DRM_CURRENTPID, cmd, nr, dev->device,
991 file_priv->authenticated);
992 #endif
993
994 switch (cmd) {
995 case FIONBIO:
996 case FIOASYNC:
997 return 0;
998
999 #if defined(__FreeBSD__)
1000 case FIOSETOWN:
1001 return fsetown(*(int *)data, &dev->buf_sigio);
1002
1003 case FIOGETOWN:
1004 *(int *) data = fgetown(&dev->buf_sigio);
1005 return 0;
1006 #endif
1007 #if defined(__NetBSD__)
1008 case SIOCSPGRP:
1009 case TIOCSPGRP:
1010 case FIOSETOWN:
1011 return fsetown(&dev->buf_pgid, cmd, data);
1012
1013 case SIOCGPGRP:
1014 case TIOCGPGRP:
1015 case FIOGETOWN:
1016 return fgetown(dev->buf_pgid, cmd, data);
1017 #endif
1018 }
1019
1020 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
1021 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
1022 return EINVAL;
1023 }
1024
1025 ioctl = &drm_ioctls[nr];
1026 /* It's not a core DRM ioctl, try driver-specific. */
1027 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
1028 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
1029 nr -= DRM_COMMAND_BASE;
1030 if (nr > dev->driver->max_ioctl) {
1031 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
1032 nr, dev->driver->max_ioctl);
1033 return EINVAL;
1034 }
1035 ioctl = &dev->driver->ioctls[nr];
1036 is_driver_ioctl = 1;
1037 }
1038 func = ioctl->func;
1039
1040 if (func == NULL) {
1041 DRM_DEBUG("no function\n");
1042 return EINVAL;
1043 }
1044
1045 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(DRM_CDEVPROC_REAL(p))) ||
1046 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
1047 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
1048 return EACCES;
1049
1050 if (is_driver_ioctl) {
1051 DRM_LOCK();
1052 /* shared code returns -errno */
1053 retcode = -func(dev, data, file_priv);
1054 DRM_UNLOCK();
1055 } else {
1056 retcode = func(dev, data, file_priv);
1057 }
1058
1059 if (retcode != 0)
1060 DRM_DEBUG(" returning %d\n", retcode);
1061
1062 return retcode;
1063 }
1064
1065 drm_local_map_t *drm_getsarea(struct drm_device *dev)
1066 {
1067 drm_local_map_t *map;
1068
1069 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
1070 TAILQ_FOREACH(map, &dev->maplist, link) {
1071 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
1072 return map;
1073 }
1074
1075 return NULL;
1076 }
1077
1078 #if DRM_LINUX
1079
1080 #include <sys/sysproto.h>
1081
1082 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1083
1084 #define LINUX_IOCTL_DRM_MIN 0x6400
1085 #define LINUX_IOCTL_DRM_MAX 0x64ff
1086
1087 static linux_ioctl_function_t drm_linux_ioctl;
1088 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1089 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1090
1091 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1092 linux_ioctl_register_handler, &drm_handler);
1093 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1094 linux_ioctl_unregister_handler, &drm_handler);
1095
1096 /* The bits for in/out are switched on Linux */
1097 #define LINUX_IOC_IN IOC_OUT
1098 #define LINUX_IOC_OUT IOC_IN
1099
1100 static int
1101 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1102 {
1103 int error;
1104 int cmd = args->cmd;
1105
1106 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1107 if (cmd & LINUX_IOC_IN)
1108 args->cmd |= IOC_IN;
1109 if (cmd & LINUX_IOC_OUT)
1110 args->cmd |= IOC_OUT;
1111
1112 error = ioctl(p, (struct ioctl_args *)args);
1113
1114 return error;
1115 }
1116 #endif /* DRM_LINUX */
1117
1118 #if defined(__NetBSD__)
1119 /* Module support */
1120
1121 MODULE(MODULE_CLASS_MISC, drm, NULL);
1122
1123 static int
1124 drm_modcmd(modcmd_t cmd, void *arg)
1125 {
1126 #ifdef _MODULE
1127 int bmajor = -1, cmajor = -1;
1128
1129 switch (cmd) {
1130 case MODULE_CMD_INIT:
1131 return devsw_attach("drm", NULL, &bmajor, &drm_cdevsw, &cmajor);
1132 case MODULE_CMD_FINI:
1133 devsw_detach(NULL, &drm_cdevsw);
1134 return 0;
1135 default:
1136 return ENOTTY;
1137 }
1138 #else
1139 if (cmd == MODULE_CMD_INIT)
1140 return 0;
1141 return ENOTTY;
1142 #endif
1143 }
1144
1145 #endif /* __NetBSD__ */
NetBSD on the FriendlyARM MINI2440