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 (at) valinux.com> 27 * Gareth Hughes <gareth (at) 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 }; 154 155 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 } 168 169 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 } 202 203 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 } 272 273 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 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 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 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 442 443 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 } 457 458 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 } 503 504 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 } 582 583 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 } 685 686 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 } 758 759 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 } 783 784 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__) 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 */ 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 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 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 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
Indexes created Sat Sep 20 22:09:52 GMT 2025