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 * $FreeBSD: head/sys/dev/drm2/drm_drv.c 247835 2013-03-05 09:49:34Z kib $ 30 */ 31 32 /** @file drm_drv.c 33 * The catch-all file for DRM device support, including module setup/teardown, 34 * open/close, and ioctl dispatch. 35 */ 36 37 #include <sys/devfs.h> 38 #include <machine/limits.h> 39 40 #include <drm/drmP.h> 41 #include <drm/drm_core.h> 42 43 #ifdef DRM_DEBUG_DEFAULT_ON 44 int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 45 DRM_DEBUGBITS_FAILED_IOCTL); 46 #else 47 int drm_debug = 0; 48 #endif 49 int drm_notyet_flag = 0; 50 51 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 52 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 53 54 static int drm_load(struct drm_device *dev); 55 drm_pci_id_list_t *drm_find_description(int vendor, int device, 56 drm_pci_id_list_t *idlist); 57 58 #define DRIVER_SOFTC(unit) \ 59 ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 60 61 static int 62 drm_modevent(module_t mod, int type, void *data) 63 { 64 65 switch (type) { 66 case MOD_LOAD: 67 TUNABLE_INT_FETCH("drm.debug", &drm_debug); 68 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag); 69 break; 70 } 71 return (0); 72 } 73 74 static moduledata_t drm_mod = { 75 "drm", 76 drm_modevent, 77 0 78 }; 79 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 80 MODULE_VERSION(drm, 1); 81 MODULE_DEPEND(drm, agp, 1, 1, 1); 82 MODULE_DEPEND(drm, pci, 1, 1, 1); 83 MODULE_DEPEND(drm, iicbus, 1, 1, 1); 84 85 static drm_ioctl_desc_t drm_ioctls[256] = { 86 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 87 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 88 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 89 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 90 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 91 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 92 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 93 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 94 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 95 96 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 97 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 98 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 99 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 100 101 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 102 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 103 104 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 105 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 106 107 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 108 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 109 110 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 111 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 112 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 113 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 114 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 117 118 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 121 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 122 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 123 124 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 125 126 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 127 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 128 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 129 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 130 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 131 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 132 133 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 134 135 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 136 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 137 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 138 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 139 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 140 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 141 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 142 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 143 144 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 145 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 146 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 147 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 148 149 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 150 151 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 152 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 153 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 154 155 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 159 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 160 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 161 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), 163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 164 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 165 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 166 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 168 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 170 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 171 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 172 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 173 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 174 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 176 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 177 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 180 }; 181 182 static struct dev_ops drm_cdevsw = { 183 { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 184 .d_open = drm_open, 185 .d_close = drm_close, 186 .d_read = drm_read, 187 .d_ioctl = drm_ioctl, 188 .d_kqfilter = drm_kqfilter, 189 .d_mmap = drm_mmap, 190 .d_mmap_single = drm_mmap_single, 191 }; 192 193 static int drm_msi = 1; /* Enable by default. */ 194 TUNABLE_INT("hw.drm.msi", &drm_msi); 195 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 196 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, 197 "Enable MSI interrupts for drm devices"); 198 199 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 200 {0x8086, 0x2772}, /* Intel i945G */ \ 201 {0x8086, 0x27A2}, /* Intel i945GM */ \ 202 {0x8086, 0x27AE}, /* Intel i945GME */ \ 203 {0, 0} 204 }; 205 206 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 207 { 208 int i = 0; 209 210 if (dev->driver->use_msi != NULL) { 211 int use_msi; 212 213 use_msi = dev->driver->use_msi(dev, flags); 214 215 return (!use_msi); 216 } 217 218 /* TODO: Maybe move this to a callback in i915? */ 219 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 220 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 221 (drm_msi_blacklist[i].device == dev->pci_device)) { 222 return 1; 223 } 224 } 225 226 return 0; 227 } 228 229 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 230 { 231 drm_pci_id_list_t *id_entry; 232 int vendor, device; 233 234 vendor = pci_get_vendor(kdev); 235 device = pci_get_device(kdev); 236 237 if (pci_get_class(kdev) != PCIC_DISPLAY) 238 return ENXIO; 239 240 id_entry = drm_find_description(vendor, device, idlist); 241 if (id_entry != NULL) { 242 if (!device_get_desc(kdev)) { 243 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 244 device_set_desc(kdev, id_entry->name); 245 } 246 return 0; 247 } 248 249 return ENXIO; 250 } 251 252 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 253 { 254 struct drm_device *dev; 255 drm_pci_id_list_t *id_entry; 256 int unit, error, msicount; 257 int rid = 0; 258 259 unit = device_get_unit(kdev); 260 dev = device_get_softc(kdev); 261 262 if (!strcmp(device_get_name(kdev), "drmsub")) 263 dev->dev = device_get_parent(kdev); 264 else 265 dev->dev = kdev; 266 267 dev->pci_domain = pci_get_domain(dev->dev); 268 dev->pci_bus = pci_get_bus(dev->dev); 269 dev->pci_slot = pci_get_slot(dev->dev); 270 dev->pci_func = pci_get_function(dev->dev); 271 272 dev->pci_vendor = pci_get_vendor(dev->dev); 273 dev->pci_device = pci_get_device(dev->dev); 274 dev->pci_subvendor = pci_get_subvendor(dev->dev); 275 dev->pci_subdevice = pci_get_subdevice(dev->dev); 276 277 id_entry = drm_find_description(dev->pci_vendor, 278 dev->pci_device, idlist); 279 dev->id_entry = id_entry; 280 281 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 282 if (drm_msi && 283 !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 284 msicount = pci_msi_count(dev->dev); 285 DRM_DEBUG("MSI count = %d\n", msicount); 286 if (msicount > 1) 287 msicount = 1; 288 289 if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) { 290 DRM_INFO("MSI enabled %d message(s)\n", 291 msicount); 292 dev->msi_enabled = 1; 293 dev->irqrid = rid; 294 } 295 } 296 297 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, 298 &dev->irqrid, RF_SHAREABLE); 299 if (!dev->irqr) { 300 return (ENOENT); 301 } 302 303 dev->irq = (int) rman_get_start(dev->irqr); 304 } 305 306 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 307 lwkt_serialize_init(&dev->irq_lock); 308 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 309 lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 310 311 error = drm_load(dev); 312 if (error) 313 goto error; 314 315 error = drm_create_cdevs(kdev); 316 if (error) 317 goto error; 318 319 return (error); 320 error: 321 if (dev->irqr) { 322 bus_release_resource(dev->dev, SYS_RES_IRQ, 323 dev->irqrid, dev->irqr); 324 } 325 if (dev->msi_enabled) { 326 pci_release_msi(dev->dev); 327 } 328 return (error); 329 } 330 331 int 332 drm_create_cdevs(device_t kdev) 333 { 334 struct drm_device *dev; 335 int error, unit; 336 337 unit = device_get_unit(kdev); 338 dev = device_get_softc(kdev); 339 340 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 341 DRM_DEV_MODE, "dri/card%d", unit); 342 error = 0; 343 if (error == 0) 344 dev->devnode->si_drv1 = dev; 345 return (error); 346 } 347 348 #ifndef DRM_DEV_NAME 349 #define DRM_DEV_NAME "drm" 350 #endif 351 352 devclass_t drm_devclass; 353 354 drm_pci_id_list_t *drm_find_description(int vendor, int device, 355 drm_pci_id_list_t *idlist) 356 { 357 int i = 0; 358 359 for (i = 0; idlist[i].vendor != 0; i++) { 360 if ((idlist[i].vendor == vendor) && 361 ((idlist[i].device == device) || 362 (idlist[i].device == 0))) { 363 return &idlist[i]; 364 } 365 } 366 return NULL; 367 } 368 369 /** 370 * Take down the DRM device. 371 * 372 * \param dev DRM device structure. 373 * 374 * Frees every resource in \p dev. 375 * 376 * \sa drm_device 377 */ 378 int drm_lastclose(struct drm_device * dev) 379 { 380 drm_magic_entry_t *pt, *next; 381 int i; 382 383 DRM_DEBUG("\n"); 384 385 if (dev->driver->lastclose != NULL) 386 dev->driver->lastclose(dev); 387 388 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 389 drm_irq_uninstall(dev); 390 391 DRM_LOCK(dev); 392 if (dev->unique) { 393 drm_free(dev->unique, M_DRM); 394 dev->unique = NULL; 395 dev->unique_len = 0; 396 } 397 /* Clear pid list */ 398 for (i = 0; i < DRM_HASH_SIZE; i++) { 399 for (pt = dev->magiclist[i].head; pt; pt = next) { 400 next = pt->next; 401 drm_free(pt, M_DRM); 402 } 403 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 404 } 405 406 /* Clear AGP information */ 407 if (dev->agp) { 408 drm_agp_mem_t *entry; 409 drm_agp_mem_t *nexte; 410 411 /* Remove AGP resources, but leave dev->agp intact until 412 * drm_unload is called. 413 */ 414 for (entry = dev->agp->memory; entry; entry = nexte) { 415 nexte = entry->next; 416 if (entry->bound) 417 drm_agp_unbind_memory(entry->handle); 418 drm_agp_free_memory(entry->handle); 419 drm_free(entry, M_DRM); 420 } 421 dev->agp->memory = NULL; 422 423 if (dev->agp->acquired) 424 drm_agp_release(dev); 425 426 dev->agp->acquired = 0; 427 dev->agp->enabled = 0; 428 } 429 if (dev->sg != NULL) { 430 drm_sg_cleanup(dev->sg); 431 dev->sg = NULL; 432 } 433 434 drm_dma_takedown(dev); 435 if (dev->lock.hw_lock) { 436 dev->lock.hw_lock = NULL; /* SHM removed */ 437 dev->lock.file_priv = NULL; 438 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 439 } 440 DRM_UNLOCK(dev); 441 442 return 0; 443 } 444 445 static int drm_load(struct drm_device *dev) 446 { 447 int i, retcode; 448 449 DRM_DEBUG("\n"); 450 451 INIT_LIST_HEAD(&dev->maplist); 452 453 drm_mem_init(); 454 drm_sysctl_init(dev); 455 INIT_LIST_HEAD(&dev->filelist); 456 457 dev->counters = 6; 458 dev->types[0] = _DRM_STAT_LOCK; 459 dev->types[1] = _DRM_STAT_OPENS; 460 dev->types[2] = _DRM_STAT_CLOSES; 461 dev->types[3] = _DRM_STAT_IOCTLS; 462 dev->types[4] = _DRM_STAT_LOCKS; 463 dev->types[5] = _DRM_STAT_UNLOCKS; 464 465 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 466 atomic_set(&dev->counts[i], 0); 467 468 INIT_LIST_HEAD(&dev->vblank_event_list); 469 470 if (drm_core_has_AGP(dev)) { 471 if (drm_device_is_agp(dev)) 472 dev->agp = drm_agp_init(); 473 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 474 dev->agp == NULL) { 475 DRM_ERROR("Card isn't AGP, or couldn't initialize " 476 "AGP.\n"); 477 retcode = ENOMEM; 478 goto error; 479 } 480 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) { 481 if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base, 482 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0) 483 dev->agp->agp_mtrr = 1; 484 } 485 } 486 487 retcode = drm_ctxbitmap_init(dev); 488 if (retcode != 0) { 489 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 490 goto error; 491 } 492 493 if (dev->driver->driver_features & DRIVER_GEM) { 494 retcode = drm_gem_init(dev); 495 if (retcode != 0) { 496 DRM_ERROR("Cannot initialize graphics execution " 497 "manager (GEM)\n"); 498 goto error1; 499 } 500 } 501 502 if (dev->driver->load != NULL) { 503 DRM_LOCK(dev); 504 /* Shared code returns -errno. */ 505 retcode = -dev->driver->load(dev, 506 dev->id_entry->driver_private); 507 if (pci_enable_busmaster(dev->dev)) 508 DRM_ERROR("Request to enable bus-master failed.\n"); 509 DRM_UNLOCK(dev); 510 if (retcode != 0) 511 goto error1; 512 } 513 514 DRM_INFO("Initialized %s %d.%d.%d %s\n", 515 dev->driver->name, 516 dev->driver->major, 517 dev->driver->minor, 518 dev->driver->patchlevel, 519 dev->driver->date); 520 521 return 0; 522 523 error1: 524 drm_gem_destroy(dev); 525 error: 526 drm_ctxbitmap_cleanup(dev); 527 drm_sysctl_cleanup(dev); 528 DRM_LOCK(dev); 529 drm_lastclose(dev); 530 DRM_UNLOCK(dev); 531 if (dev->devnode != NULL) 532 destroy_dev(dev->devnode); 533 534 lockuninit(&dev->vbl_lock); 535 lockuninit(&dev->dev_lock); 536 lockuninit(&dev->event_lock); 537 lockuninit(&dev->struct_mutex); 538 539 return retcode; 540 } 541 542 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 543 { 544 struct drm_version *version = data; 545 int len; 546 547 #define DRM_COPY( name, value ) \ 548 len = strlen( value ); \ 549 if ( len > name##_len ) len = name##_len; \ 550 name##_len = strlen( value ); \ 551 if ( len && name ) { \ 552 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 553 return EFAULT; \ 554 } 555 556 version->version_major = dev->driver->major; 557 version->version_minor = dev->driver->minor; 558 version->version_patchlevel = dev->driver->patchlevel; 559 560 DRM_COPY(version->name, dev->driver->name); 561 DRM_COPY(version->date, dev->driver->date); 562 DRM_COPY(version->desc, dev->driver->desc); 563 564 return 0; 565 } 566 567 /* 568 * Stub is needed for devfs 569 */ 570 int drm_close(struct dev_close_args *ap) 571 { 572 return 0; 573 } 574 575 void drm_cdevpriv_dtor(void *cd) 576 { 577 struct drm_file *file_priv = cd; 578 struct drm_device *dev = file_priv->dev; 579 int retcode = 0; 580 581 DRM_DEBUG("open_count = %d\n", dev->open_count); 582 583 DRM_LOCK(dev); 584 585 if (dev->driver->preclose != NULL) 586 dev->driver->preclose(dev, file_priv); 587 588 /* ======================================================== 589 * Begin inline drm_release 590 */ 591 592 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 593 DRM_CURRENTPID, (long)dev->dev, dev->open_count); 594 595 if (dev->driver->driver_features & DRIVER_GEM) 596 drm_gem_release(dev, file_priv); 597 598 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 599 && dev->lock.file_priv == file_priv) { 600 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 601 DRM_CURRENTPID, 602 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 603 if (dev->driver->reclaim_buffers_locked != NULL) 604 dev->driver->reclaim_buffers_locked(dev, file_priv); 605 606 drm_lock_free(&dev->lock, 607 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 608 609 /* FIXME: may require heavy-handed reset of 610 hardware at this point, possibly 611 processed via a callback to the X 612 server. */ 613 } else if (dev->driver->reclaim_buffers_locked != NULL && 614 dev->lock.hw_lock != NULL) { 615 /* The lock is required to reclaim buffers */ 616 for (;;) { 617 if (!dev->lock.hw_lock) { 618 /* Device has been unregistered */ 619 retcode = EINTR; 620 break; 621 } 622 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 623 dev->lock.file_priv = file_priv; 624 dev->lock.lock_time = jiffies; 625 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 626 break; /* Got lock */ 627 } 628 /* Contention */ 629 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 630 PCATCH, "drmlk2", 0); 631 if (retcode) 632 break; 633 } 634 if (retcode == 0) { 635 dev->driver->reclaim_buffers_locked(dev, file_priv); 636 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 637 } 638 } 639 640 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 641 !dev->driver->reclaim_buffers_locked) 642 drm_reclaim_buffers(dev, file_priv); 643 644 funsetown(&dev->buf_sigio); 645 646 if (dev->driver->postclose != NULL) 647 dev->driver->postclose(dev, file_priv); 648 list_del(&file_priv->lhead); 649 650 651 /* ======================================================== 652 * End inline drm_release 653 */ 654 655 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 656 device_unbusy(dev->dev); 657 if (--dev->open_count == 0) { 658 retcode = drm_lastclose(dev); 659 } 660 661 DRM_UNLOCK(dev); 662 } 663 664 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 665 */ 666 int drm_ioctl(struct dev_ioctl_args *ap) 667 { 668 struct cdev *kdev = ap->a_head.a_dev; 669 u_long cmd = ap->a_cmd; 670 caddr_t data = ap->a_data; 671 struct thread *p = curthread; 672 struct drm_device *dev = drm_get_device_from_kdev(kdev); 673 int retcode = 0; 674 drm_ioctl_desc_t *ioctl; 675 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 676 int nr = DRM_IOCTL_NR(cmd); 677 int is_driver_ioctl = 0; 678 struct drm_file *file_priv; 679 680 retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); 681 if (retcode !=0) { 682 DRM_ERROR("can't find authenticator\n"); 683 return EINVAL; 684 } 685 686 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 687 ++file_priv->ioctl_count; 688 689 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 690 DRM_CURRENTPID, cmd, nr, (long)dev->dev, 691 file_priv->authenticated); 692 693 switch (cmd) { 694 case FIONBIO: 695 case FIOASYNC: 696 return 0; 697 698 case FIOSETOWN: 699 return fsetown(*(int *)data, &dev->buf_sigio); 700 701 case FIOGETOWN: 702 *(int *) data = fgetown(&dev->buf_sigio); 703 return 0; 704 } 705 706 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 707 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 708 return EINVAL; 709 } 710 711 ioctl = &drm_ioctls[nr]; 712 /* It's not a core DRM ioctl, try driver-specific. */ 713 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 714 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 715 nr -= DRM_COMMAND_BASE; 716 if (nr > dev->driver->num_ioctls) { 717 return EINVAL; 718 } 719 ioctl = &dev->driver->ioctls[nr]; 720 is_driver_ioctl = 1; 721 } 722 func = ioctl->func; 723 724 if (func == NULL) { 725 DRM_DEBUG("no function\n"); 726 return EINVAL; 727 } 728 729 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 730 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 731 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 732 return EACCES; 733 734 if (is_driver_ioctl) { 735 if ((ioctl->flags & DRM_UNLOCKED) == 0) 736 DRM_LOCK(dev); 737 /* shared code returns -errno */ 738 retcode = -func(dev, data, file_priv); 739 if ((ioctl->flags & DRM_UNLOCKED) == 0) 740 DRM_UNLOCK(dev); 741 } else { 742 retcode = func(dev, data, file_priv); 743 } 744 745 if (retcode != 0) 746 DRM_DEBUG(" returning %d\n", retcode); 747 if (retcode != 0 && 748 (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 749 kprintf( 750 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 751 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->dev, 752 file_priv->authenticated, retcode); 753 } 754 755 return retcode; 756 } 757 758 drm_local_map_t *drm_getsarea(struct drm_device *dev) 759 { 760 struct drm_map_list *entry; 761 762 list_for_each_entry(entry, &dev->maplist, head) { 763 if (entry->map && entry->map->type == _DRM_SHM && 764 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 765 return entry->map; 766 } 767 } 768 769 return NULL; 770 } 771 772 int 773 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 774 struct sysctl_oid *top) 775 { 776 struct sysctl_oid *oid; 777 778 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 779 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 780 dev->pci_slot, dev->pci_func); 781 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 782 CTLFLAG_RD, dev->busid_str, 0, NULL); 783 if (oid == NULL) 784 return (ENOMEM); 785 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 786 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 787 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 788 if (oid == NULL) 789 return (ENOMEM); 790 791 return (0); 792 } 793 794 int 795 drm_mmap_single(struct dev_mmap_single_args *ap) 796 { 797 struct drm_device *dev; 798 struct cdev *kdev = ap->a_head.a_dev; 799 vm_ooffset_t *offset = ap->a_offset; 800 vm_size_t size = ap->a_size; 801 struct vm_object **obj_res = ap->a_object; 802 int nprot = ap->a_nprot; 803 804 dev = drm_get_device_from_kdev(kdev); 805 if (dev->drm_ttm_bdev != NULL) { 806 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 807 obj_res, nprot)); 808 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 809 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 810 } else { 811 return (ENODEV); 812 } 813 } 814 815 #if DRM_LINUX 816 817 #include <sys/sysproto.h> 818 819 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 820 821 #define LINUX_IOCTL_DRM_MIN 0x6400 822 #define LINUX_IOCTL_DRM_MAX 0x64ff 823 824 static linux_ioctl_function_t drm_linux_ioctl; 825 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 826 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 827 828 /* The bits for in/out are switched on Linux */ 829 #define LINUX_IOC_IN IOC_OUT 830 #define LINUX_IOC_OUT IOC_IN 831 832 static int 833 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 834 { 835 int error; 836 int cmd = args->cmd; 837 838 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 839 if (cmd & LINUX_IOC_IN) 840 args->cmd |= IOC_IN; 841 if (cmd & LINUX_IOC_OUT) 842 args->cmd |= IOC_OUT; 843 844 error = ioctl(p, (struct ioctl_args *)args); 845 846 return error; 847 } 848 #endif /* DRM_LINUX */ 849 850 static int 851 drm_core_init(void *arg) 852 { 853 854 drm_global_init(); 855 856 #if DRM_LINUX 857 linux_ioctl_register_handler(&drm_handler); 858 #endif /* DRM_LINUX */ 859 860 DRM_INFO("Initialized %s %d.%d.%d %s\n", 861 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 862 return 0; 863 } 864 865 static void 866 drm_core_exit(void *arg) 867 { 868 869 #if DRM_LINUX 870 linux_ioctl_unregister_handler(&drm_handler); 871 #endif /* DRM_LINUX */ 872 873 drm_global_release(); 874 } 875 876 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 877 drm_core_init, NULL); 878 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 879 drm_core_exit, NULL); 880 881 /* 882 * Check if dmi_system_id structure matches system DMI data 883 */ 884 static bool 885 dmi_found(const struct dmi_system_id *dsi) 886 { 887 int i, slot; 888 bool found = false; 889 char *sys_vendor, *board_vendor, *product_name, *board_name; 890 891 sys_vendor = kgetenv("smbios.system.maker"); 892 board_vendor = kgetenv("smbios.planar.maker"); 893 product_name = kgetenv("smbios.system.product"); 894 board_name = kgetenv("smbios.planar.product"); 895 896 for (i = 0; i < NELEM(dsi->matches); i++) { 897 slot = dsi->matches[i].slot; 898 switch (slot) { 899 case DMI_NONE: 900 break; 901 case DMI_SYS_VENDOR: 902 if (sys_vendor != NULL && 903 !strcmp(sys_vendor, dsi->matches[i].substr)) 904 break; 905 else 906 goto done; 907 case DMI_BOARD_VENDOR: 908 if (board_vendor != NULL && 909 !strcmp(board_vendor, dsi->matches[i].substr)) 910 break; 911 else 912 goto done; 913 case DMI_PRODUCT_NAME: 914 if (product_name != NULL && 915 !strcmp(product_name, dsi->matches[i].substr)) 916 break; 917 else 918 goto done; 919 case DMI_BOARD_NAME: 920 if (board_name != NULL && 921 !strcmp(board_name, dsi->matches[i].substr)) 922 break; 923 else 924 goto done; 925 default: 926 goto done; 927 } 928 } 929 found = true; 930 931 done: 932 if (sys_vendor != NULL) 933 kfreeenv(sys_vendor); 934 if (board_vendor != NULL) 935 kfreeenv(board_vendor); 936 if (product_name != NULL) 937 kfreeenv(product_name); 938 if (board_name != NULL) 939 kfreeenv(board_name); 940 941 return found; 942 } 943 944 bool 945 dmi_check_system(const struct dmi_system_id *sysid) 946 { 947 const struct dmi_system_id *dsi; 948 int num = 0; 949 950 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 951 if (dmi_found(dsi)) { 952 num++; 953 if (dsi->callback && dsi->callback(dsi)) 954 break; 955 } 956 } 957 return (num); 958 } 959 960