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 #ifndef DRM_NO_AGP
116 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
118 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
119 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
120 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
121 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
122 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
123 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
124 #endif
125
126 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
127 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
128 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
129 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
130 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
131 };
132
133 #if defined(__FreeBSD__)
134 static struct cdevsw drm_cdevsw = {
135 .d_version = D_VERSION,
136 .d_open = drm_open,
137 .d_read = drm_read,
138 .d_ioctl = drm_ioctl,
139 .d_poll = drm_poll,
140 .d_mmap = drm_mmap,
141 .d_name = "drm",
142 .d_flags = D_TRACKCLOSE
143 };
144
145 int drm_msi = 1; /* Enable by default. */
146 TUNABLE_INT("hw.drm.msi", &drm_msi);
147
148 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
149 {0x8086, 0x2772}, /* Intel i945G */ \
150 {0x8086, 0x27A2}, /* Intel i945GM */ \
151 {0x8086, 0x27AE}, /* Intel i945GME */ \
152 {0, 0}
153 };
154
drm_msi_is_blacklisted(int vendor,int device)155 static int drm_msi_is_blacklisted(int vendor, int device)
156 {
157 int i = 0;
158
159 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
160 if ((drm_msi_blacklist[i].vendor == vendor) &&
161 (drm_msi_blacklist[i].device == device)) {
162 return 1;
163 }
164 }
165
166 return 0;
167 }
168
drm_probe(device_t kdev,drm_pci_id_list_t * idlist)169 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
170 {
171 drm_pci_id_list_t *id_entry;
172 int vendor, device;
173 #if __FreeBSD_version < 700010
174 device_t realdev;
175
176 if (!strcmp(device_get_name(kdev), "drmsub"))
177 realdev = device_get_parent(kdev);
178 else
179 realdev = kdev;
180 vendor = pci_get_vendor(realdev);
181 device = pci_get_device(realdev);
182 #else
183 vendor = pci_get_vendor(kdev);
184 device = pci_get_device(kdev);
185 #endif
186
187 if (pci_get_class(kdev) != PCIC_DISPLAY
188 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
189 return ENXIO;
190
191 id_entry = drm_find_description(vendor, device, idlist);
192 if (id_entry != NULL) {
193 if (!device_get_desc(kdev)) {
194 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
195 device_set_desc(kdev, id_entry->name);
196 }
197 return 0;
198 }
199
200 return ENXIO;
201 }
202
drm_attach(device_t kdev,drm_pci_id_list_t * idlist)203 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
204 {
205 struct drm_device *dev;
206 drm_pci_id_list_t *id_entry;
207 int unit, msicount;
208
209 unit = device_get_unit(kdev);
210 dev = device_get_softc(kdev);
211
212 #if __FreeBSD_version < 700010
213 if (!strcmp(device_get_name(kdev), "drmsub"))
214 dev->device = device_get_parent(kdev);
215 else
216 dev->device = kdev;
217 #else
218 dev->device = kdev;
219 #endif
220 dev->devnode = make_dev(&drm_cdevsw,
221 unit,
222 DRM_DEV_UID,
223 DRM_DEV_GID,
224 DRM_DEV_MODE,
225 "dri/card%d", unit);
226
227 #if __FreeBSD_version >= 700053
228 dev->pci_domain = pci_get_domain(dev->device);
229 #else
230 dev->pci_domain = 0;
231 #endif
232 dev->pci_bus = pci_get_bus(dev->device);
233 dev->pci_slot = pci_get_slot(dev->device);
234 dev->pci_func = pci_get_function(dev->device);
235
236 dev->pci_vendor = pci_get_vendor(dev->device);
237 dev->pci_device = pci_get_device(dev->device);
238
239 if (drm_msi &&
240 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
241 msicount = pci_msi_count(dev->device);
242 DRM_DEBUG("MSI count = %d\n", msicount);
243 if (msicount > 1)
244 msicount = 1;
245
246 if (pci_alloc_msi(dev->device, &msicount) == 0) {
247 DRM_INFO("MSI enabled %d message(s)\n", msicount);
248 dev->msi_enabled = 1;
249 dev->irqrid = 1;
250 }
251 }
252
253 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
254 &dev->irqrid, RF_SHAREABLE);
255 if (!dev->irqr) {
256 return ENOENT;
257 }
258
259 dev->irq = (int) rman_get_start(dev->irqr);
260
261 mtx_init(&dev->dev_lock, "drmdev", NULL, MTX_DEF);
262 mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
263 mtx_init(&dev->vbl_lock, "drmvbl", NULL, MTX_DEF);
264 mtx_init(&dev->drw_lock, "drmdrw", NULL, MTX_DEF);
265
266 id_entry = drm_find_description(dev->pci_vendor,
267 dev->pci_device, idlist);
268 dev->id_entry = id_entry;
269
270 return drm_load(dev);
271 }
272
drm_detach(device_t kdev)273 int drm_detach(device_t kdev)
274 {
275 struct drm_device *dev;
276
277 dev = device_get_softc(kdev);
278
279 drm_unload(dev);
280
281 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
282
283 if (dev->msi_enabled) {
284 pci_release_msi(dev->device);
285 DRM_INFO("MSI released\n");
286 }
287
288 return 0;
289 }
290
291 #ifndef DRM_DEV_NAME
292 #define DRM_DEV_NAME "drm"
293 #endif
294
295 devclass_t drm_devclass;
296
297 #elif defined(__NetBSD__)
298
299 /*
300 * Mapping from device minor to struct drm_device.
301 * This is needed, because each driver (radeon, i915, etc.) has its own
302 * _cd structure, so we can't just lookup from _cd with minor.
303 */
304 struct drm_device *drm_units[DRM_MAXUNITS];
305
306 struct cdevsw drm_cdevsw = {
307 .d_open = drm_open,
308 .d_close = drm_close,
309 .d_read = drm_read,
310 .d_write = nowrite,
311 .d_ioctl = drm_ioctl,
312 .d_stop = nostop,
313 .d_tty = notty,
314 .d_poll = drm_poll,
315 .d_mmap = drm_mmap,
316 .d_kqfilter = nokqfilter,
317 .d_discard = nodiscard,
318 .d_flag = D_TTY | D_NEGOFFSAFE
319 };
320
321 int drm_refcnt = 0;
322
323 int
drm_probe(struct pci_attach_args * pa,drm_pci_id_list_t * idlist)324 drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t *idlist)
325 {
326 drm_pci_id_list_t *id_entry;
327
328 id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
329 PCI_PRODUCT(pa->pa_id), idlist);
330 if (id_entry != NULL) {
331 return 1;
332 }
333
334 return 0;
335 }
336
337 void
drm_attach(device_t kdev,struct pci_attach_args * pa,drm_pci_id_list_t * idlist)338 drm_attach(device_t kdev, struct pci_attach_args *pa, drm_pci_id_list_t *idlist)
339 {
340 device_t parent_dev;
341 struct drm_device *dev;
342 int unit, parent_unit;
343
344 unit = device_unit(kdev);
345 if (unit < 0 || unit >= DRM_MAXUNITS)
346 panic("drm_attach: device unit %d invalid", unit);
347 if (drm_units[unit] != NULL)
348 panic("drm_attach: unit %d already attached", unit);
349
350 /*
351 * this is kind of ugly but we fake up the pci "domain" by using
352 * our pci unit number, so, find our parent pci device's unit...
353 */
354 parent_dev = kdev;
355 do {
356 parent_dev = device_parent(parent_dev);
357 } while (parent_dev && !device_is_a(parent_dev, "pci"));
358 parent_unit = device_unit(parent_dev);
359 if (parent_unit < 0)
360 panic("drm_attach: device parent_unit %d invalid", parent_unit);
361
362 dev = device_private(kdev);
363 dev->device = kdev;
364 drm_units[unit] = dev;
365
366 for (unit = 0; unit < DRM_MAX_PCI_RESOURCE; unit++)
367 {
368 dev->pci_map_data[unit].mapped = 0;
369 dev->pci_map_data[unit].maptype =
370 pci_mapreg_type(pa->pa_pc, pa->pa_tag,
371 PCI_MAPREG_START + unit*4);
372 if (pci_mapreg_info(pa->pa_pc, pa->pa_tag,
373 PCI_MAPREG_START + unit*4,
374 dev->pci_map_data[unit].maptype,
375 &(dev->pci_map_data[unit].base),
376 &(dev->pci_map_data[unit].size),
377 &(dev->pci_map_data[unit].flags)))
378 {
379 DRM_DEBUG("pci_mapreg info for %d failed\n",
380 PCI_MAPREG_START + unit*4);
381 dev->pci_map_data[unit].base = 0;
382 dev->pci_map_data[unit].size = 0;
383 }
384 if (dev->pci_map_data[unit].maptype == PCI_MAPREG_TYPE_MEM)
385 dev->pci_map_data[unit].flags |= BUS_SPACE_MAP_LINEAR;
386 if (dev->pci_map_data[unit].maptype ==
387 (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT))
388 dev->pci_map_data[unit].flags |= BUS_SPACE_MAP_LINEAR;
389 DRM_DEBUG("pci resource %d: type=%d, base=%lx, size=%zx, flags=%x\n",
390 unit, dev->pci_map_data[unit].maptype,
391 (unsigned long)dev->pci_map_data[unit].base,
392 dev->pci_map_data[unit].size,
393 dev->pci_map_data[unit].flags);
394 }
395 for (unit = 0; unit < DRM_MAX_PCI_RESOURCE; unit++) {
396 dev->agp_map_data[unit].mapped = 0;
397 dev->agp_map_data[unit].maptype = PCI_MAPREG_TYPE_MEM;
398 }
399
400 mutex_init(&dev->dev_lock, MUTEX_DEFAULT, IPL_NONE);
401 mutex_init(&dev->irq_lock, MUTEX_DEFAULT, IPL_VM);
402 mutex_init(&dev->vbl_lock, MUTEX_DEFAULT, IPL_NONE);
403 mutex_init(&dev->drw_lock, MUTEX_DEFAULT, IPL_NONE);
404
405 memcpy(&dev->pa, pa, sizeof(dev->pa));
406
407 dev->irq = pa->pa_intrpin;
408 dev->pci_domain = parent_unit;
409 dev->pci_bus = pa->pa_bus;
410 dev->pci_slot = pa->pa_device;
411 dev->pci_func = pa->pa_function;
412 dev->pci_vendor = PCI_VENDOR(pa->pa_id);
413 dev->pci_device = PCI_PRODUCT(pa->pa_id);
414
415 dev->id_entry = drm_find_description(PCI_VENDOR(pa->pa_id),
416 PCI_PRODUCT(pa->pa_id), idlist);
417
418 aprint_naive("\n");
419 aprint_normal(": %s\n", dev->id_entry->name);
420 drm_load(dev);
421 }
422
423 int
drm_detach(device_t self,int flags)424 drm_detach(device_t self, int flags)
425 {
426 struct drm_device *dev = device_private(self);
427
428 /* XXX locking */
429 if (dev->open_count)
430 return EBUSY;
431
432 drm_unload(dev);
433
434 drm_units[device_unit(self)] = NULL;
435
436 free(dev->driver, DRM_MEM_DRIVER);
437
438 return 0;
439 }
440
441 #endif
442
drm_find_description(int vendor,int device,drm_pci_id_list_t * idlist)443 drm_pci_id_list_t *drm_find_description(int vendor, int device,
444 drm_pci_id_list_t *idlist)
445 {
446 int i = 0;
447
448 for (i = 0; idlist[i].vendor != 0; i++) {
449 if ((idlist[i].vendor == vendor) &&
450 ((idlist[i].device == device) ||
451 (idlist[i].device == 0))) {
452 return &idlist[i];
453 }
454 }
455 return NULL;
456 }
457
drm_firstopen(struct drm_device * dev)458 static int drm_firstopen(struct drm_device *dev)
459 {
460 drm_local_map_t *map;
461 int i;
462
463 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
464
465 /* prebuild the SAREA */
466 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
467 _DRM_CONTAINS_LOCK, &map);
468 if (i != 0)
469 return i;
470
471 if (dev->driver->firstopen)
472 dev->driver->firstopen(dev);
473
474 dev->buf_use = 0;
475
476 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
477 i = drm_dma_setup(dev);
478 if (i != 0)
479 return i;
480 }
481
482 for (i = 0; i < DRM_HASH_SIZE; i++) {
483 dev->magiclist[i].head = NULL;
484 dev->magiclist[i].tail = NULL;
485 }
486
487 dev->lock.lock_queue = 0;
488 dev->irq_enabled = 0;
489 dev->context_flag = 0;
490 dev->last_context = 0;
491 dev->if_version = 0;
492
493 #if defined(__FreeBSD__)
494 dev->buf_sigio = NULL;
495 #elif defined(__NetBSD__)
496 dev->buf_pgid = 0;
497 #endif
498
499 DRM_DEBUG("\n");
500
501 return 0;
502 }
503
drm_lastclose(struct drm_device * dev)504 static int drm_lastclose(struct drm_device *dev)
505 {
506 drm_magic_entry_t *pt, *next;
507 drm_local_map_t *map, *mapsave;
508 int i;
509
510 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
511
512 DRM_DEBUG("\n");
513
514 if (dev->driver->lastclose != NULL)
515 dev->driver->lastclose(dev);
516
517 if (dev->irq_enabled)
518 drm_irq_uninstall(dev);
519
520 if (dev->unique) {
521 free(dev->unique, DRM_MEM_DRIVER);
522 dev->unique = NULL;
523 dev->unique_len = 0;
524 }
525 /* Clear pid list */
526 for (i = 0; i < DRM_HASH_SIZE; i++) {
527 for (pt = dev->magiclist[i].head; pt; pt = next) {
528 next = pt->next;
529 free(pt, DRM_MEM_MAGIC);
530 }
531 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
532 }
533
534 DRM_UNLOCK();
535 drm_drawable_free_all(dev);
536 DRM_LOCK();
537
538 #ifndef DRM_NO_AGP
539 /* Clear AGP information */
540 if (dev->agp) {
541 drm_agp_mem_t *entry;
542 drm_agp_mem_t *nexte;
543
544 /* Remove AGP resources, but leave dev->agp intact until
545 * drm_unload is called.
546 */
547 for (entry = dev->agp->memory; entry; entry = nexte) {
548 nexte = entry->next;
549 if (entry->bound)
550 drm_agp_unbind_memory(entry->handle);
551 drm_agp_free_memory(entry->handle);
552 free(entry, DRM_MEM_AGPLISTS);
553 }
554 dev->agp->memory = NULL;
555
556 if (dev->agp->acquired)
557 drm_agp_release(dev);
558
559 dev->agp->acquired = 0;
560 dev->agp->enabled = 0;
561 }
562 #endif
563 if (dev->sg != NULL) {
564 drm_sg_cleanup(dev->sg);
565 dev->sg = NULL;
566 }
567
568 TAILQ_FOREACH_SAFE(map, &dev->maplist, link, mapsave) {
569 if (!(map->flags & _DRM_DRIVER))
570 drm_rmmap(dev, map);
571 }
572
573 drm_dma_takedown(dev);
574 if (dev->lock.hw_lock) {
575 dev->lock.hw_lock = NULL; /* SHM removed */
576 dev->lock.file_priv = NULL;
577 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
578 }
579
580 return 0;
581 }
582
drm_load(struct drm_device * dev)583 static int drm_load(struct drm_device *dev)
584 {
585 int i, retcode;
586
587 DRM_DEBUG("\n");
588
589 TAILQ_INIT(&dev->maplist);
590
591 drm_mem_init();
592 drm_sysctl_init(dev);
593 TAILQ_INIT(&dev->files);
594
595 dev->counters = 6;
596 dev->types[0] = _DRM_STAT_LOCK;
597 dev->types[1] = _DRM_STAT_OPENS;
598 dev->types[2] = _DRM_STAT_CLOSES;
599 dev->types[3] = _DRM_STAT_IOCTLS;
600 dev->types[4] = _DRM_STAT_LOCKS;
601 dev->types[5] = _DRM_STAT_UNLOCKS;
602
603 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
604 atomic_set(&dev->counts[i], 0);
605
606 if (dev->driver->load != NULL) {
607 DRM_LOCK();
608 /* Shared code returns -errno. */
609 retcode = -dev->driver->load(dev,
610 dev->id_entry->driver_private);
611 #if defined(__FreeBSD__)
612 if (pci_enable_busmaster(dev->device))
613 DRM_ERROR("Request to enable bus-master failed.\n");
614 #endif
615 DRM_UNLOCK();
616 if (retcode != 0)
617 goto error;
618 }
619
620 #ifndef DRM_NO_AGP
621 if (drm_core_has_AGP(dev)) {
622 if (drm_device_is_agp(dev))
623 dev->agp = drm_agp_init(dev);
624 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
625 dev->agp == NULL) {
626 DRM_ERROR("Card isn't AGP, or couldn't initialize "
627 "AGP.\n");
628 retcode = ENOMEM;
629 goto error;
630 }
631 if (dev->agp != NULL) {
632 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
633 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
634 dev->agp->mtrr = 1;
635 }
636 }
637 #endif
638
639 retcode = drm_ctxbitmap_init(dev);
640 if (retcode != 0) {
641 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
642 goto error;
643 }
644
645 #if defined(__FreeBSD__)
646 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL);
647 if (dev->drw_unrhdr == NULL) {
648 DRM_ERROR("Couldn't allocate drawable number allocator\n");
649 goto error;
650 }
651 #else
652 dev->drw_no = 0;
653 #endif
654
655 #if defined(__NetBSD__)
656 aprint_normal_dev(dev->device,
657 #else
658 DRM_INFO(
659 #endif
660 "Initialized %s %d.%d.%d %s\n",
661 dev->driver->name,
662 dev->driver->major,
663 dev->driver->minor,
664 dev->driver->patchlevel,
665 dev->driver->date);
666
667 return 0;
668
669 error:
670 drm_sysctl_cleanup(dev);
671 DRM_LOCK();
672 drm_lastclose(dev);
673 DRM_UNLOCK();
674 #if defined(__FreeBSD__)
675 destroy_dev(dev->devnode);
676 #endif
677
678 DRM_SPINUNINIT(&dev->drw_lock);
679 DRM_SPINUNINIT(&dev->vbl_lock);
680 DRM_SPINUNINIT(&dev->irq_lock);
681 DRM_SPINUNINIT(&dev->dev_lock);
682
683 return retcode;
684 }
685
drm_unload(struct drm_device * dev)686 static void drm_unload(struct drm_device *dev)
687 {
688 #if defined(__FreeBSD__)
689 int i;
690 #endif
691
692 DRM_DEBUG("\n");
693
694 drm_sysctl_cleanup(dev);
695 #if defined(__FreeBSD__)
696 destroy_dev(dev->devnode);
697 #endif
698
699 drm_ctxbitmap_cleanup(dev);
700
701 if (dev->agp && dev->agp->mtrr) {
702 int __unused retcode;
703
704 retcode = drm_mtrr_del(0,
705 dev->agp->info.ai_aperture_base,
706 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
707 DRM_DEBUG("mtrr_del = %d", retcode);
708 }
709
710 DRM_LOCK();
711 drm_lastclose(dev);
712 DRM_UNLOCK();
713
714 drm_vblank_cleanup(dev);
715
716 #if defined(__FreeBSD__)
717 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
718 * worried about resource consumption while the DRM is inactive (between
719 * lastclose and firstopen or unload) because these aren't actually
720 * taking up KVA, just keeping the PCI resource allocated.
721 */
722 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
723 if (dev->pcir[i] == NULL)
724 continue;
725 bus_release_resource(dev->device, SYS_RES_MEMORY,
726 dev->pcirid[i], dev->pcir[i]);
727 dev->pcir[i] = NULL;
728 }
729 #endif
730
731 if (dev->agp) {
732 free(dev->agp, DRM_MEM_AGPLISTS);
733 dev->agp = NULL;
734 }
735
736 if (dev->driver->unload != NULL) {
737 DRM_LOCK();
738 dev->driver->unload(dev);
739 DRM_UNLOCK();
740 }
741
742 #if defined(__FreeBSD__)
743 delete_unrhdr(dev->drw_unrhdr);
744 #endif
745
746 drm_mem_uninit();
747
748 #if defined(__FreeBSD__)
749 if (pci_disable_busmaster(dev->device))
750 DRM_ERROR("Request to disable bus-master failed.\n");
751 #endif
752
753 DRM_SPINUNINIT(&dev->drw_lock);
754 DRM_SPINUNINIT(&dev->vbl_lock);
755 DRM_SPINUNINIT(&dev->irq_lock);
756 DRM_SPINUNINIT(&dev->dev_lock);
757 }
758
drm_version(struct drm_device * dev,void * data,struct drm_file * file_priv)759 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
760 {
761 struct drm_version *drmvers = data;
762 int len;
763
764 #define DRM_COPY( name, value ) \
765 len = strlen( value ); \
766 if ( len > name##_len ) len = name##_len; \
767 name##_len = strlen( value ); \
768 if ( len && name ) { \
769 if ( DRM_COPY_TO_USER( name, value, len ) ) \
770 return EFAULT; \
771 }
772
773 drmvers->version_major = dev->driver->major;
774 drmvers->version_minor = dev->driver->minor;
775 drmvers->version_patchlevel = dev->driver->patchlevel;
776
777 DRM_COPY(drmvers->name, dev->driver->name);
778 DRM_COPY(drmvers->date, dev->driver->date);
779 DRM_COPY(drmvers->desc, dev->driver->desc);
780
781 return 0;
782 }
783
drm_open(DRM_CDEV kdev,int flags,int fmt,DRM_STRUCTCDEVPROC * p)784 int drm_open(DRM_CDEV kdev, int flags, int fmt, DRM_STRUCTCDEVPROC *p)
785 {
786 struct drm_device *dev = NULL;
787 int retcode = 0;
788
789 #if defined(__FreeBSD__)
790 dev = DRIVER_SOFTC(dev2unit(kdev));
791 #elif defined(__NetBSD__)
792 dev = DRIVER_SOFTC(kdev);
793 if (dev == NULL)
794 return ENXIO;
795 dev->kdev = kdev;
796 #endif
797
798 DRM_DEBUG("open_count = %d\n", dev->open_count);
799
800 retcode = drm_open_helper(kdev, flags, fmt, DRM_CDEVPROC_REAL(p), dev);
801
802 if (!retcode) {
803 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
804 DRM_LOCK();
805 #if defined(__FreeBSD__)
806 device_busy(dev->device);
807 #endif
808 if (!dev->open_count++)
809 retcode = drm_firstopen(dev);
810 DRM_UNLOCK();
811 }
812
813 return retcode;
814 }
815
816 #if defined(__FreeBSD__)
drm_close(void * data)817 void drm_close(void *data)
818 #elif defined(__NetBSD__)
819 int
820 drm_close(dev_t kdev, int flags, int fmt, struct lwp *l)
821 #endif
822 {
823 struct drm_file *file_priv;
824 struct drm_device *dev;
825 int retcode = 0;
826
827 #if defined(__FreeBSD__)
828 file_priv = data;
829 dev = file_priv->dev;
830 #elif defined(__NetBSD__)
831 dev = DRIVER_SOFTC(kdev);
832 #endif
833
834 DRM_DEBUG("open_count = %d\n", dev->open_count);
835
836 DRM_LOCK();
837
838 #if defined(__NetBSD__)
839 file_priv = drm_find_file_by_proc(dev, l->l_proc);
840 if (file_priv == NULL) {
841 DRM_UNLOCK();
842 DRM_ERROR("can't find authenticator\n");
843 return EINVAL;
844 }
845 #endif
846
847 if (dev->driver->preclose != NULL)
848 dev->driver->preclose(dev, file_priv);
849
850 /* ========================================================
851 * Begin inline drm_release
852 */
853
854 #if defined(__FreeBSD__)
855 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
856 DRM_CURRENTPID, (long)dev->device, dev->open_count);
857 #elif defined(__NetBSD__)
858 DRM_DEBUG("pid = %d, device = 0x%p, open_count = %d\n",
859 DRM_CURRENTPID, dev->device, dev->open_count);
860 #endif
861
862 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
863 && dev->lock.file_priv == file_priv) {
864 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
865 DRM_CURRENTPID,
866 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
867 if (dev->driver->reclaim_buffers_locked != NULL)
868 dev->driver->reclaim_buffers_locked(dev, file_priv);
869
870 drm_lock_free(&dev->lock,
871 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
872
873 /* FIXME: may require heavy-handed reset of
874 hardware at this point, possibly
875 processed via a callback to the X
876 server. */
877 } else if (dev->driver->reclaim_buffers_locked != NULL &&
878 dev->lock.hw_lock != NULL) {
879 /* The lock is required to reclaim buffers */
880 for (;;) {
881 if (!dev->lock.hw_lock) {
882 /* Device has been unregistered */
883 retcode = EINTR;
884 break;
885 }
886 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
887 dev->lock.file_priv = file_priv;
888 dev->lock.lock_time = jiffies;
889 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
890 break; /* Got lock */
891 }
892 /* Contention */
893 #if defined(__FreeBSD__)
894 retcode = mtx_sleep((void *)&dev->lock.lock_queue,
895 &dev->dev_lock, PCATCH, "drmlk2", 0);
896 #elif defined(__NetBSD__)
897 retcode = mtsleep((void *)&dev->lock.lock_queue,
898 PCATCH, "drmlk2", 0, &dev->dev_lock);
899 #endif
900 if (retcode)
901 break;
902 }
903 if (retcode == 0) {
904 dev->driver->reclaim_buffers_locked(dev, file_priv);
905 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
906 }
907 }
908
909 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
910 !dev->driver->reclaim_buffers_locked)
911 drm_reclaim_buffers(dev, file_priv);
912
913 #if defined(__FreeBSD__)
914 funsetown(&dev->buf_sigio);
915 #else
916 dev->buf_pgid = 0;
917 #endif
918
919 if (dev->driver->postclose != NULL)
920 dev->driver->postclose(dev, file_priv);
921 TAILQ_REMOVE(&dev->files, file_priv, link);
922 free(file_priv, DRM_MEM_FILES);
923
924 /* ========================================================
925 * End inline drm_release
926 */
927
928 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
929 #if defined(__FreeBSD__)
930 device_unbusy(dev->device);
931 #endif
932 #if defined(__NetBSD__)
933 /* On NetBSD, close will only be called once */
934 DRM_DEBUG("setting open_count %d to 1\n", (int)dev->open_count);
935 while (dev->open_count != 1) {
936 /*
937 * XXXMRG probably should assert that we are freeing
938 * one of these each time. i think.
939 */
940 if (!TAILQ_EMPTY(&dev->files)) {
941 file_priv = TAILQ_FIRST(&dev->files);
942 TAILQ_REMOVE(&dev->files, file_priv, link);
943 }
944 dev->open_count--;
945 }
946 #endif
947 if (--dev->open_count == 0) {
948 retcode = drm_lastclose(dev);
949 }
950
951 DRM_UNLOCK();
952
953 #if defined(__NetBSD__)
954 return retcode;
955 #endif
956 }
957
958 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
959 */
drm_ioctl(DRM_CDEV kdev,u_long cmd,DRM_IOCTL_DATA data,int flags,DRM_STRUCTCDEVPROC * p)960 int drm_ioctl(DRM_CDEV kdev, u_long cmd, DRM_IOCTL_DATA data, int flags,
961 DRM_STRUCTCDEVPROC *p)
962 {
963 struct drm_device *dev = drm_get_device_from_kdev(kdev);
964 int retcode = 0;
965 drm_ioctl_desc_t *ioctl;
966 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
967 int nr = DRM_IOCTL_NR(cmd);
968 int is_driver_ioctl = 0;
969 struct drm_file *file_priv;
970
971 #if defined(__FreeBSD__)
972 retcode = devfs_get_cdevpriv((void **)&file_priv);
973 if (retcode != 0) {
974 DRM_ERROR("can't find authenticator\n");
975 return EINVAL;
976 }
977 #elif defined(__NetBSD__)
978 DRM_LOCK();
979 file_priv = drm_find_file_by_proc(dev, p->l_proc);
980 DRM_UNLOCK();
981 if (file_priv == NULL) {
982 DRM_ERROR("can't find authenticator\n");
983 return EINVAL;
984 }
985 #endif
986
987 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
988 ++file_priv->ioctl_count;
989
990 #if defined(__FreeBSD__)
991 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
992 DRM_CURRENTPID, cmd, nr, (long)dev->device,
993 file_priv->authenticated);
994 #elif defined(__NetBSD__)
995 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev %p, auth=%d\n",
996 DRM_CURRENTPID, cmd, nr, dev->device,
997 file_priv->authenticated);
998 #endif
999
1000 switch (cmd) {
1001 case FIONBIO:
1002 case FIOASYNC:
1003 return 0;
1004
1005 #if defined(__FreeBSD__)
1006 case FIOSETOWN:
1007 return fsetown(*(int *)data, &dev->buf_sigio);
1008
1009 case FIOGETOWN:
1010 *(int *) data = fgetown(&dev->buf_sigio);
1011 return 0;
1012 #endif
1013 #if defined(__NetBSD__)
1014 case SIOCSPGRP:
1015 case TIOCSPGRP:
1016 case FIOSETOWN:
1017 return fsetown(&dev->buf_pgid, cmd, data);
1018
1019 case SIOCGPGRP:
1020 case TIOCGPGRP:
1021 case FIOGETOWN:
1022 return fgetown(dev->buf_pgid, cmd, data);
1023 #endif
1024 }
1025
1026 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
1027 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
1028 return EINVAL;
1029 }
1030
1031 ioctl = &drm_ioctls[nr];
1032 /* It's not a core DRM ioctl, try driver-specific. */
1033 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
1034 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
1035 nr -= DRM_COMMAND_BASE;
1036 if (nr > dev->driver->max_ioctl) {
1037 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
1038 nr, dev->driver->max_ioctl);
1039 return EINVAL;
1040 }
1041 ioctl = &dev->driver->ioctls[nr];
1042 is_driver_ioctl = 1;
1043 }
1044 func = ioctl->func;
1045
1046 if (func == NULL) {
1047 DRM_DEBUG("no function\n");
1048 return EINVAL;
1049 }
1050
1051 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(DRM_CDEVPROC_REAL(p))) ||
1052 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
1053 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
1054 return EACCES;
1055
1056 if (is_driver_ioctl) {
1057 DRM_LOCK();
1058 /* shared code returns -errno */
1059 retcode = -func(dev, data, file_priv);
1060 DRM_UNLOCK();
1061 } else {
1062 retcode = func(dev, data, file_priv);
1063 }
1064
1065 if (retcode != 0)
1066 DRM_DEBUG(" returning %d\n", retcode);
1067
1068 return retcode;
1069 }
1070
drm_getsarea(struct drm_device * dev)1071 drm_local_map_t *drm_getsarea(struct drm_device *dev)
1072 {
1073 drm_local_map_t *map;
1074
1075 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
1076 TAILQ_FOREACH(map, &dev->maplist, link) {
1077 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
1078 return map;
1079 }
1080
1081 return NULL;
1082 }
1083
1084 #if DRM_LINUX
1085
1086 #include <sys/sysproto.h>
1087
1088 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
1089
1090 #define LINUX_IOCTL_DRM_MIN 0x6400
1091 #define LINUX_IOCTL_DRM_MAX 0x64ff
1092
1093 static linux_ioctl_function_t drm_linux_ioctl;
1094 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
1095 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
1096
1097 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
1098 linux_ioctl_register_handler, &drm_handler);
1099 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
1100 linux_ioctl_unregister_handler, &drm_handler);
1101
1102 /* The bits for in/out are switched on Linux */
1103 #define LINUX_IOC_IN IOC_OUT
1104 #define LINUX_IOC_OUT IOC_IN
1105
1106 static int
drm_linux_ioctl(DRM_STRUCTPROC * p,struct linux_ioctl_args * args)1107 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
1108 {
1109 int error;
1110 int cmd = args->cmd;
1111
1112 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
1113 if (cmd & LINUX_IOC_IN)
1114 args->cmd |= IOC_IN;
1115 if (cmd & LINUX_IOC_OUT)
1116 args->cmd |= IOC_OUT;
1117
1118 error = ioctl(p, (struct ioctl_args *)args);
1119
1120 return error;
1121 }
1122 #endif /* DRM_LINUX */
1123
1124 #if defined(__NetBSD__)
1125 /* Module support */
1126
1127 MODULE(MODULE_CLASS_DRIVER, drm, "pci");
1128
1129 static int
drm_modcmd(modcmd_t cmd,void * arg)1130 drm_modcmd(modcmd_t cmd, void *arg)
1131 {
1132 #ifdef _MODULE
1133 int bmajor = -1, cmajor = -1;
1134
1135 switch (cmd) {
1136 case MODULE_CMD_INIT:
1137 return devsw_attach("drm", NULL, &bmajor, &drm_cdevsw, &cmajor);
1138 case MODULE_CMD_FINI:
1139 devsw_detach(NULL, &drm_cdevsw);
1140 return 0;
1141 default:
1142 return ENOTTY;
1143 }
1144 #else
1145 if (cmd == MODULE_CMD_INIT)
1146 return 0;
1147 return ENOTTY;
1148 #endif
1149 }
1150
1151 #endif /* __NetBSD__ */
1152