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 static void drm_unload(struct drm_device *dev); 56 drm_pci_id_list_t *drm_find_description(int vendor, int device, 57 drm_pci_id_list_t *idlist); 58 59 #define DRIVER_SOFTC(unit) \ 60 ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 61 62 static int 63 drm_modevent(module_t mod, int type, void *data) 64 { 65 66 switch (type) { 67 case MOD_LOAD: 68 TUNABLE_INT_FETCH("drm.debug", &drm_debug); 69 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag); 70 break; 71 } 72 return (0); 73 } 74 75 static moduledata_t drm_mod = { 76 "drm", 77 drm_modevent, 78 0 79 }; 80 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 81 MODULE_VERSION(drm, 1); 82 MODULE_DEPEND(drm, agp, 1, 1, 1); 83 MODULE_DEPEND(drm, pci, 1, 1, 1); 84 MODULE_DEPEND(drm, iicbus, 1, 1, 1); 85 86 static drm_ioctl_desc_t drm_ioctls[256] = { 87 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 88 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 89 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 90 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 91 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 92 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 93 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 94 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 95 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 96 97 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 98 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 99 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 100 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 101 102 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 103 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 104 105 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 106 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 107 108 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 109 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 110 111 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 112 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 113 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 115 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 118 119 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121 122 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 123 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 124 125 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 126 127 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 128 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 129 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 130 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 131 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 132 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 133 134 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 135 136 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 137 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 138 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 139 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 140 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 141 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 142 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 143 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 144 145 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 146 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 147 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 148 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 149 150 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 151 152 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 153 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 154 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 155 156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 159 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 160 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 161 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), 164 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 165 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 166 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 168 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), 170 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 171 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 172 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 173 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 174 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 176 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 177 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 180 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 181 }; 182 183 static struct dev_ops drm_cdevsw = { 184 { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 185 .d_open = drm_open, 186 .d_close = drm_close, 187 .d_read = drm_read, 188 .d_ioctl = drm_ioctl, 189 .d_kqfilter = drm_kqfilter, 190 .d_mmap = drm_mmap, 191 .d_mmap_single = drm_mmap_single, 192 }; 193 194 static int drm_msi = 1; /* Enable by default. */ 195 TUNABLE_INT("hw.drm.msi", &drm_msi); 196 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 197 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, 198 "Enable MSI interrupts for drm devices"); 199 200 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 201 {0x8086, 0x2772}, /* Intel i945G */ \ 202 {0x8086, 0x27A2}, /* Intel i945GM */ \ 203 {0x8086, 0x27AE}, /* Intel i945GME */ \ 204 {0, 0} 205 }; 206 207 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 208 { 209 int i = 0; 210 211 if (dev->driver->use_msi != NULL) { 212 int use_msi; 213 214 use_msi = dev->driver->use_msi(dev, flags); 215 216 return (!use_msi); 217 } 218 219 /* TODO: Maybe move this to a callback in i915? */ 220 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 221 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 222 (drm_msi_blacklist[i].device == dev->pci_device)) { 223 return 1; 224 } 225 } 226 227 return 0; 228 } 229 230 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 231 { 232 drm_pci_id_list_t *id_entry; 233 int vendor, device; 234 235 vendor = pci_get_vendor(kdev); 236 device = pci_get_device(kdev); 237 238 if (pci_get_class(kdev) != PCIC_DISPLAY) 239 return ENXIO; 240 241 id_entry = drm_find_description(vendor, device, idlist); 242 if (id_entry != NULL) { 243 if (!device_get_desc(kdev)) { 244 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 245 device_set_desc(kdev, id_entry->name); 246 } 247 return 0; 248 } 249 250 return ENXIO; 251 } 252 253 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 254 { 255 struct drm_device *dev; 256 drm_pci_id_list_t *id_entry; 257 int unit, error, msicount; 258 int rid = 0; 259 260 unit = device_get_unit(kdev); 261 dev = device_get_softc(kdev); 262 263 if (!strcmp(device_get_name(kdev), "drmsub")) 264 dev->dev = device_get_parent(kdev); 265 else 266 dev->dev = kdev; 267 268 dev->pci_domain = pci_get_domain(dev->dev); 269 dev->pci_bus = pci_get_bus(dev->dev); 270 dev->pci_slot = pci_get_slot(dev->dev); 271 dev->pci_func = pci_get_function(dev->dev); 272 273 dev->pci_vendor = pci_get_vendor(dev->dev); 274 dev->pci_device = pci_get_device(dev->dev); 275 dev->pci_subvendor = pci_get_subvendor(dev->dev); 276 dev->pci_subdevice = pci_get_subdevice(dev->dev); 277 278 id_entry = drm_find_description(dev->pci_vendor, 279 dev->pci_device, idlist); 280 dev->id_entry = id_entry; 281 282 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 283 if (drm_msi && 284 !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 285 msicount = pci_msi_count(dev->dev); 286 DRM_DEBUG("MSI count = %d\n", msicount); 287 if (msicount > 1) 288 msicount = 1; 289 290 if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) { 291 DRM_INFO("MSI enabled %d message(s)\n", 292 msicount); 293 dev->msi_enabled = 1; 294 dev->irqrid = rid; 295 } 296 } 297 298 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, 299 &dev->irqrid, RF_SHAREABLE); 300 if (!dev->irqr) { 301 return (ENOENT); 302 } 303 304 dev->irq = (int) rman_get_start(dev->irqr); 305 } 306 307 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 308 lwkt_serialize_init(&dev->irq_lock); 309 lockinit(&dev->vbl_lock, "drmvbl", 0, LK_CANRECURSE); 310 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 311 lockinit(&dev->dev_struct_lock, "drmslk", 0, LK_CANRECURSE); 312 313 error = drm_load(dev); 314 if (error) 315 goto error; 316 317 error = drm_create_cdevs(kdev); 318 if (error) 319 goto error; 320 321 return (error); 322 error: 323 if (dev->irqr) { 324 bus_release_resource(dev->dev, SYS_RES_IRQ, 325 dev->irqrid, dev->irqr); 326 } 327 if (dev->msi_enabled) { 328 pci_release_msi(dev->dev); 329 } 330 return (error); 331 } 332 333 int 334 drm_create_cdevs(device_t kdev) 335 { 336 struct drm_device *dev; 337 int error, unit; 338 339 unit = device_get_unit(kdev); 340 dev = device_get_softc(kdev); 341 342 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 343 DRM_DEV_MODE, "dri/card%d", unit); 344 error = 0; 345 if (error == 0) 346 dev->devnode->si_drv1 = dev; 347 return (error); 348 } 349 350 int drm_detach(device_t kdev) 351 { 352 struct drm_device *dev; 353 354 dev = device_get_softc(kdev); 355 drm_unload(dev); 356 if (dev->irqr) { 357 bus_release_resource(dev->dev, SYS_RES_IRQ, dev->irqrid, 358 dev->irqr); 359 if (dev->msi_enabled) { 360 pci_release_msi(dev->dev); 361 DRM_INFO("MSI released\n"); 362 } 363 } 364 return (0); 365 } 366 367 #ifndef DRM_DEV_NAME 368 #define DRM_DEV_NAME "drm" 369 #endif 370 371 devclass_t drm_devclass; 372 373 drm_pci_id_list_t *drm_find_description(int vendor, int device, 374 drm_pci_id_list_t *idlist) 375 { 376 int i = 0; 377 378 for (i = 0; idlist[i].vendor != 0; i++) { 379 if ((idlist[i].vendor == vendor) && 380 ((idlist[i].device == device) || 381 (idlist[i].device == 0))) { 382 return &idlist[i]; 383 } 384 } 385 return NULL; 386 } 387 388 /** 389 * Take down the DRM device. 390 * 391 * \param dev DRM device structure. 392 * 393 * Frees every resource in \p dev. 394 * 395 * \sa drm_device 396 */ 397 static int drm_lastclose(struct drm_device *dev) 398 { 399 drm_magic_entry_t *pt, *next; 400 int i; 401 402 DRM_DEBUG("\n"); 403 404 if (dev->driver->lastclose != NULL) 405 dev->driver->lastclose(dev); 406 407 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 408 drm_irq_uninstall(dev); 409 410 DRM_LOCK(dev); 411 if (dev->unique) { 412 drm_free(dev->unique, DRM_MEM_DRIVER); 413 dev->unique = NULL; 414 dev->unique_len = 0; 415 } 416 /* Clear pid list */ 417 for (i = 0; i < DRM_HASH_SIZE; i++) { 418 for (pt = dev->magiclist[i].head; pt; pt = next) { 419 next = pt->next; 420 drm_free(pt, DRM_MEM_MAGIC); 421 } 422 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 423 } 424 425 /* Clear AGP information */ 426 if (dev->agp) { 427 drm_agp_mem_t *entry; 428 drm_agp_mem_t *nexte; 429 430 /* Remove AGP resources, but leave dev->agp intact until 431 * drm_unload is called. 432 */ 433 for (entry = dev->agp->memory; entry; entry = nexte) { 434 nexte = entry->next; 435 if (entry->bound) 436 drm_agp_unbind_memory(entry->handle); 437 drm_agp_free_memory(entry->handle); 438 drm_free(entry, DRM_MEM_AGPLISTS); 439 } 440 dev->agp->memory = NULL; 441 442 if (dev->agp->acquired) 443 drm_agp_release(dev); 444 445 dev->agp->acquired = 0; 446 dev->agp->enabled = 0; 447 } 448 if (dev->sg != NULL) { 449 drm_sg_cleanup(dev->sg); 450 dev->sg = NULL; 451 } 452 453 drm_dma_takedown(dev); 454 if (dev->lock.hw_lock) { 455 dev->lock.hw_lock = NULL; /* SHM removed */ 456 dev->lock.file_priv = NULL; 457 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 458 } 459 DRM_UNLOCK(dev); 460 461 return 0; 462 } 463 464 static int drm_load(struct drm_device *dev) 465 { 466 int i, retcode; 467 468 DRM_DEBUG("\n"); 469 470 INIT_LIST_HEAD(&dev->maplist); 471 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 472 if (dev->map_unrhdr == NULL) { 473 DRM_ERROR("Couldn't allocate map number allocator\n"); 474 return EINVAL; 475 } 476 477 478 drm_mem_init(); 479 drm_sysctl_init(dev); 480 INIT_LIST_HEAD(&dev->filelist); 481 482 dev->counters = 6; 483 dev->types[0] = _DRM_STAT_LOCK; 484 dev->types[1] = _DRM_STAT_OPENS; 485 dev->types[2] = _DRM_STAT_CLOSES; 486 dev->types[3] = _DRM_STAT_IOCTLS; 487 dev->types[4] = _DRM_STAT_LOCKS; 488 dev->types[5] = _DRM_STAT_UNLOCKS; 489 490 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 491 atomic_set(&dev->counts[i], 0); 492 493 INIT_LIST_HEAD(&dev->vblank_event_list); 494 495 if (drm_core_has_AGP(dev)) { 496 if (drm_device_is_agp(dev)) 497 dev->agp = drm_agp_init(); 498 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 499 dev->agp == NULL) { 500 DRM_ERROR("Card isn't AGP, or couldn't initialize " 501 "AGP.\n"); 502 retcode = ENOMEM; 503 goto error; 504 } 505 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) { 506 if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base, 507 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0) 508 dev->agp->agp_mtrr = 1; 509 } 510 } 511 512 retcode = drm_ctxbitmap_init(dev); 513 if (retcode != 0) { 514 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 515 goto error; 516 } 517 518 if (dev->driver->driver_features & DRIVER_GEM) { 519 retcode = drm_gem_init(dev); 520 if (retcode != 0) { 521 DRM_ERROR("Cannot initialize graphics execution " 522 "manager (GEM)\n"); 523 goto error1; 524 } 525 } 526 527 if (dev->driver->load != NULL) { 528 DRM_LOCK(dev); 529 /* Shared code returns -errno. */ 530 retcode = -dev->driver->load(dev, 531 dev->id_entry->driver_private); 532 if (pci_enable_busmaster(dev->dev)) 533 DRM_ERROR("Request to enable bus-master failed.\n"); 534 DRM_UNLOCK(dev); 535 if (retcode != 0) 536 goto error1; 537 } 538 539 DRM_INFO("Initialized %s %d.%d.%d %s\n", 540 dev->driver->name, 541 dev->driver->major, 542 dev->driver->minor, 543 dev->driver->patchlevel, 544 dev->driver->date); 545 546 return 0; 547 548 error1: 549 drm_gem_destroy(dev); 550 error: 551 drm_ctxbitmap_cleanup(dev); 552 drm_sysctl_cleanup(dev); 553 DRM_LOCK(dev); 554 drm_lastclose(dev); 555 DRM_UNLOCK(dev); 556 if (dev->devnode != NULL) 557 destroy_dev(dev->devnode); 558 559 lockuninit(&dev->vbl_lock); 560 lockuninit(&dev->dev_lock); 561 lockuninit(&dev->event_lock); 562 lockuninit(&dev->dev_struct_lock); 563 564 return retcode; 565 } 566 567 static void drm_unload(struct drm_device *dev) 568 { 569 int i; 570 571 DRM_DEBUG("\n"); 572 573 drm_sysctl_cleanup(dev); 574 if (dev->devnode != NULL) 575 destroy_dev(dev->devnode); 576 577 drm_ctxbitmap_cleanup(dev); 578 579 if (dev->driver->driver_features & DRIVER_GEM) 580 drm_gem_destroy(dev); 581 582 if (dev->agp && dev->agp->agp_mtrr) { 583 int __unused retcode; 584 585 retcode = drm_mtrr_del(0, dev->agp->agp_info.ai_aperture_base, 586 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC); 587 DRM_DEBUG("mtrr_del = %d", retcode); 588 } 589 590 drm_vblank_cleanup(dev); 591 592 DRM_LOCK(dev); 593 drm_lastclose(dev); 594 DRM_UNLOCK(dev); 595 596 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 597 * worried about resource consumption while the DRM is inactive (between 598 * lastclose and firstopen or unload) because these aren't actually 599 * taking up KVA, just keeping the PCI resource allocated. 600 */ 601 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 602 if (dev->pcir[i] == NULL) 603 continue; 604 bus_release_resource(dev->dev, SYS_RES_MEMORY, 605 dev->pcirid[i], dev->pcir[i]); 606 dev->pcir[i] = NULL; 607 } 608 609 if (dev->agp) { 610 drm_free(dev->agp, DRM_MEM_AGPLISTS); 611 dev->agp = NULL; 612 } 613 614 if (dev->driver->unload != NULL) { 615 DRM_LOCK(dev); 616 dev->driver->unload(dev); 617 DRM_UNLOCK(dev); 618 } 619 620 delete_unrhdr(dev->map_unrhdr); 621 622 drm_mem_uninit(); 623 624 if (pci_disable_busmaster(dev->dev)) 625 DRM_ERROR("Request to disable bus-master failed.\n"); 626 627 lockuninit(&dev->vbl_lock); 628 lockuninit(&dev->dev_lock); 629 lockuninit(&dev->event_lock); 630 lockuninit(&dev->dev_struct_lock); 631 } 632 633 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 634 { 635 struct drm_version *version = data; 636 int len; 637 638 #define DRM_COPY( name, value ) \ 639 len = strlen( value ); \ 640 if ( len > name##_len ) len = name##_len; \ 641 name##_len = strlen( value ); \ 642 if ( len && name ) { \ 643 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 644 return EFAULT; \ 645 } 646 647 version->version_major = dev->driver->major; 648 version->version_minor = dev->driver->minor; 649 version->version_patchlevel = dev->driver->patchlevel; 650 651 DRM_COPY(version->name, dev->driver->name); 652 DRM_COPY(version->date, dev->driver->date); 653 DRM_COPY(version->desc, dev->driver->desc); 654 655 return 0; 656 } 657 658 /* 659 * Stub is needed for devfs 660 */ 661 int drm_close(struct dev_close_args *ap) 662 { 663 return 0; 664 } 665 666 void drm_cdevpriv_dtor(void *cd) 667 { 668 struct drm_file *file_priv = cd; 669 struct drm_device *dev = file_priv->dev; 670 int retcode = 0; 671 672 DRM_DEBUG("open_count = %d\n", dev->open_count); 673 674 DRM_LOCK(dev); 675 676 if (dev->driver->preclose != NULL) 677 dev->driver->preclose(dev, file_priv); 678 679 /* ======================================================== 680 * Begin inline drm_release 681 */ 682 683 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 684 DRM_CURRENTPID, (long)dev->dev, dev->open_count); 685 686 if (dev->driver->driver_features & DRIVER_GEM) 687 drm_gem_release(dev, file_priv); 688 689 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 690 && dev->lock.file_priv == file_priv) { 691 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 692 DRM_CURRENTPID, 693 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 694 if (dev->driver->reclaim_buffers_locked != NULL) 695 dev->driver->reclaim_buffers_locked(dev, file_priv); 696 697 drm_lock_free(&dev->lock, 698 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 699 700 /* FIXME: may require heavy-handed reset of 701 hardware at this point, possibly 702 processed via a callback to the X 703 server. */ 704 } else if (dev->driver->reclaim_buffers_locked != NULL && 705 dev->lock.hw_lock != NULL) { 706 /* The lock is required to reclaim buffers */ 707 for (;;) { 708 if (!dev->lock.hw_lock) { 709 /* Device has been unregistered */ 710 retcode = EINTR; 711 break; 712 } 713 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 714 dev->lock.file_priv = file_priv; 715 dev->lock.lock_time = jiffies; 716 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 717 break; /* Got lock */ 718 } 719 /* Contention */ 720 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 721 PCATCH, "drmlk2", 0); 722 if (retcode) 723 break; 724 } 725 if (retcode == 0) { 726 dev->driver->reclaim_buffers_locked(dev, file_priv); 727 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 728 } 729 } 730 731 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 732 !dev->driver->reclaim_buffers_locked) 733 drm_reclaim_buffers(dev, file_priv); 734 735 funsetown(&dev->buf_sigio); 736 737 if (dev->driver->postclose != NULL) 738 dev->driver->postclose(dev, file_priv); 739 list_del(&file_priv->lhead); 740 741 742 /* ======================================================== 743 * End inline drm_release 744 */ 745 746 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 747 device_unbusy(dev->dev); 748 if (--dev->open_count == 0) { 749 retcode = drm_lastclose(dev); 750 } 751 752 DRM_UNLOCK(dev); 753 } 754 755 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 756 */ 757 int drm_ioctl(struct dev_ioctl_args *ap) 758 { 759 struct cdev *kdev = ap->a_head.a_dev; 760 u_long cmd = ap->a_cmd; 761 caddr_t data = ap->a_data; 762 struct thread *p = curthread; 763 struct drm_device *dev = drm_get_device_from_kdev(kdev); 764 int retcode = 0; 765 drm_ioctl_desc_t *ioctl; 766 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 767 int nr = DRM_IOCTL_NR(cmd); 768 int is_driver_ioctl = 0; 769 struct drm_file *file_priv; 770 771 retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); 772 if (retcode !=0) { 773 DRM_ERROR("can't find authenticator\n"); 774 return EINVAL; 775 } 776 777 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 778 ++file_priv->ioctl_count; 779 780 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 781 DRM_CURRENTPID, cmd, nr, (long)dev->dev, 782 file_priv->authenticated); 783 784 switch (cmd) { 785 case FIONBIO: 786 case FIOASYNC: 787 return 0; 788 789 case FIOSETOWN: 790 return fsetown(*(int *)data, &dev->buf_sigio); 791 792 case FIOGETOWN: 793 *(int *) data = fgetown(&dev->buf_sigio); 794 return 0; 795 } 796 797 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 798 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 799 return EINVAL; 800 } 801 802 ioctl = &drm_ioctls[nr]; 803 /* It's not a core DRM ioctl, try driver-specific. */ 804 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 805 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 806 nr -= DRM_COMMAND_BASE; 807 if (nr > dev->driver->max_ioctl) { 808 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 809 nr, dev->driver->max_ioctl); 810 return EINVAL; 811 } 812 ioctl = &dev->driver->ioctls[nr]; 813 is_driver_ioctl = 1; 814 } 815 func = ioctl->func; 816 817 if (func == NULL) { 818 DRM_DEBUG("no function\n"); 819 return EINVAL; 820 } 821 822 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 823 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 824 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 825 return EACCES; 826 827 if (is_driver_ioctl) { 828 if ((ioctl->flags & DRM_UNLOCKED) == 0) 829 DRM_LOCK(dev); 830 /* shared code returns -errno */ 831 retcode = -func(dev, data, file_priv); 832 if ((ioctl->flags & DRM_UNLOCKED) == 0) 833 DRM_UNLOCK(dev); 834 } else { 835 retcode = func(dev, data, file_priv); 836 } 837 838 if (retcode != 0) 839 DRM_DEBUG(" returning %d\n", retcode); 840 if (retcode != 0 && 841 (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 842 kprintf( 843 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 844 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->dev, 845 file_priv->authenticated, retcode); 846 } 847 848 return retcode; 849 } 850 851 drm_local_map_t *drm_getsarea(struct drm_device *dev) 852 { 853 struct drm_map_list *entry; 854 855 list_for_each_entry(entry, &dev->maplist, head) { 856 if (entry->map && entry->map->type == _DRM_SHM && 857 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 858 return entry->map; 859 } 860 } 861 862 return NULL; 863 } 864 865 int 866 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 867 struct sysctl_oid *top) 868 { 869 struct sysctl_oid *oid; 870 871 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 872 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 873 dev->pci_slot, dev->pci_func); 874 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 875 CTLFLAG_RD, dev->busid_str, 0, NULL); 876 if (oid == NULL) 877 return (ENOMEM); 878 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 879 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 880 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 881 if (oid == NULL) 882 return (ENOMEM); 883 884 return (0); 885 } 886 887 int 888 drm_mmap_single(struct dev_mmap_single_args *ap) 889 { 890 struct drm_device *dev; 891 struct cdev *kdev = ap->a_head.a_dev; 892 vm_ooffset_t *offset = ap->a_offset; 893 vm_size_t size = ap->a_size; 894 struct vm_object **obj_res = ap->a_object; 895 int nprot = ap->a_nprot; 896 897 dev = drm_get_device_from_kdev(kdev); 898 if (dev->drm_ttm_bdev != NULL) { 899 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 900 obj_res, nprot)); 901 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 902 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 903 } else { 904 return (ENODEV); 905 } 906 } 907 908 #if DRM_LINUX 909 910 #include <sys/sysproto.h> 911 912 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 913 914 #define LINUX_IOCTL_DRM_MIN 0x6400 915 #define LINUX_IOCTL_DRM_MAX 0x64ff 916 917 static linux_ioctl_function_t drm_linux_ioctl; 918 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 919 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 920 921 /* The bits for in/out are switched on Linux */ 922 #define LINUX_IOC_IN IOC_OUT 923 #define LINUX_IOC_OUT IOC_IN 924 925 static int 926 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 927 { 928 int error; 929 int cmd = args->cmd; 930 931 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 932 if (cmd & LINUX_IOC_IN) 933 args->cmd |= IOC_IN; 934 if (cmd & LINUX_IOC_OUT) 935 args->cmd |= IOC_OUT; 936 937 error = ioctl(p, (struct ioctl_args *)args); 938 939 return error; 940 } 941 #endif /* DRM_LINUX */ 942 943 static int 944 drm_core_init(void *arg) 945 { 946 947 drm_global_init(); 948 949 #if DRM_LINUX 950 linux_ioctl_register_handler(&drm_handler); 951 #endif /* DRM_LINUX */ 952 953 DRM_INFO("Initialized %s %d.%d.%d %s\n", 954 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 955 return 0; 956 } 957 958 static void 959 drm_core_exit(void *arg) 960 { 961 962 #if DRM_LINUX 963 linux_ioctl_unregister_handler(&drm_handler); 964 #endif /* DRM_LINUX */ 965 966 drm_global_release(); 967 } 968 969 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 970 drm_core_init, NULL); 971 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 972 drm_core_exit, NULL); 973 974 /* 975 * Check if dmi_system_id structure matches system DMI data 976 */ 977 static bool 978 dmi_found(const struct dmi_system_id *dsi) 979 { 980 int i, slot; 981 bool found = false; 982 char *sys_vendor, *board_vendor, *product_name, *board_name; 983 984 sys_vendor = kgetenv("smbios.system.maker"); 985 board_vendor = kgetenv("smbios.planar.maker"); 986 product_name = kgetenv("smbios.system.product"); 987 board_name = kgetenv("smbios.planar.product"); 988 989 for (i = 0; i < NELEM(dsi->matches); i++) { 990 slot = dsi->matches[i].slot; 991 switch (slot) { 992 case DMI_NONE: 993 break; 994 case DMI_SYS_VENDOR: 995 if (sys_vendor != NULL && 996 !strcmp(sys_vendor, dsi->matches[i].substr)) 997 break; 998 else 999 goto done; 1000 case DMI_BOARD_VENDOR: 1001 if (board_vendor != NULL && 1002 !strcmp(board_vendor, dsi->matches[i].substr)) 1003 break; 1004 else 1005 goto done; 1006 case DMI_PRODUCT_NAME: 1007 if (product_name != NULL && 1008 !strcmp(product_name, dsi->matches[i].substr)) 1009 break; 1010 else 1011 goto done; 1012 case DMI_BOARD_NAME: 1013 if (board_name != NULL && 1014 !strcmp(board_name, dsi->matches[i].substr)) 1015 break; 1016 else 1017 goto done; 1018 default: 1019 goto done; 1020 } 1021 } 1022 found = true; 1023 1024 done: 1025 if (sys_vendor != NULL) 1026 kfreeenv(sys_vendor); 1027 if (board_vendor != NULL) 1028 kfreeenv(board_vendor); 1029 if (product_name != NULL) 1030 kfreeenv(product_name); 1031 if (board_name != NULL) 1032 kfreeenv(board_name); 1033 1034 return found; 1035 } 1036 1037 bool 1038 dmi_check_system(const struct dmi_system_id *sysid) 1039 { 1040 const struct dmi_system_id *dsi; 1041 int num = 0; 1042 1043 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 1044 if (dmi_found(dsi)) { 1045 num++; 1046 if (dsi->callback && dsi->callback(dsi)) 1047 break; 1048 } 1049 } 1050 return (num); 1051 } 1052 1053