1 /** 2 * \file drm_drv.c 3 * Generic driver template 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 * \author Gareth Hughes <gareth@valinux.com> 7 * 8 * To use this template, you must at least define the following (samples 9 * given for the MGA driver): 10 * 11 * \code 12 * #define DRIVER_AUTHOR "VA Linux Systems, Inc." 13 * 14 * #define DRIVER_NAME "mga" 15 * #define DRIVER_DESC "Matrox G200/G400" 16 * #define DRIVER_DATE "20001127" 17 * 18 * #define drm_x mga_##x 19 * \endcode 20 */ 21 22 /* 23 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com 24 * 25 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas. 26 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 27 * All Rights Reserved. 28 * 29 * Permission is hereby granted, free of charge, to any person obtaining a 30 * copy of this software and associated documentation files (the "Software"), 31 * to deal in the Software without restriction, including without limitation 32 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 33 * and/or sell copies of the Software, and to permit persons to whom the 34 * Software is furnished to do so, subject to the following conditions: 35 * 36 * The above copyright notice and this permission notice (including the next 37 * paragraph) shall be included in all copies or substantial portions of the 38 * Software. 39 * 40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 41 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 43 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 44 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 45 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 46 * OTHER DEALINGS IN THE SOFTWARE. 47 */ 48 49 #include <sys/devfs.h> 50 51 #include <linux/export.h> 52 #include <drm/drmP.h> 53 #include <drm/drm_core.h> 54 55 #if DRM_DEBUG_DEFAULT_ON == 1 56 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \ 57 DRM_DEBUGBITS_FAILED_IOCTL) 58 #elif DRM_DEBUG_DEFAULT_ON == 2 59 #define DRM_DEBUGBITS_ON (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | \ 60 DRM_DEBUGBITS_FAILED_IOCTL | DRM_DEBUGBITS_VERBOSE) 61 #else 62 #define DRM_DEBUGBITS_ON (0x0) 63 #endif 64 65 int drm_debug = DRM_DEBUGBITS_ON; 66 int drm_notyet_flag = 0; 67 68 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 69 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 70 71 static int drm_load(struct drm_device *dev); 72 drm_pci_id_list_t *drm_find_description(int vendor, int device, 73 drm_pci_id_list_t *idlist); 74 75 #define DRIVER_SOFTC(unit) \ 76 ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 77 78 static int 79 drm_modevent(module_t mod, int type, void *data) 80 { 81 82 switch (type) { 83 case MOD_LOAD: 84 TUNABLE_INT_FETCH("drm.debug", &drm_debug); 85 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag); 86 break; 87 } 88 return (0); 89 } 90 91 static moduledata_t drm_mod = { 92 "drm", 93 drm_modevent, 94 0 95 }; 96 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 97 MODULE_VERSION(drm, 1); 98 MODULE_DEPEND(drm, agp, 1, 1, 1); 99 MODULE_DEPEND(drm, pci, 1, 1, 1); 100 MODULE_DEPEND(drm, iicbus, 1, 1, 1); 101 102 #define DRM_IOCTL_DEF(ioctl, func, flags) \ 103 [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags} 104 105 /** Ioctl table */ 106 static struct drm_ioctl_desc drm_ioctls[256] = { 107 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 108 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 109 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 110 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 111 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 112 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 113 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 114 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 115 DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0), 116 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 117 118 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 121 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 122 123 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 124 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 125 126 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 127 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 128 129 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 130 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 131 132 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 133 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 134 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 135 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 136 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 137 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 138 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 139 140 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 141 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 142 143 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 144 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 145 146 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 147 148 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 149 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 150 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 151 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 152 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 153 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 154 155 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 156 157 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 158 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 159 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 160 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 161 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 162 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 163 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 164 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 165 166 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 167 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 168 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 170 171 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 172 173 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 174 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 176 177 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 180 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 181 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 182 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 183 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 184 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), 185 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 186 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 187 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 188 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 189 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 190 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), 191 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 192 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 193 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 194 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 195 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 196 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 197 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 198 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 199 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 200 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 201 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 202 }; 203 204 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) 205 206 static struct dev_ops drm_cdevsw = { 207 { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 208 .d_open = drm_open, 209 .d_close = drm_close, 210 .d_read = drm_read, 211 .d_ioctl = drm_ioctl, 212 .d_kqfilter = drm_kqfilter, 213 .d_mmap = drm_mmap, 214 .d_mmap_single = drm_mmap_single, 215 }; 216 217 static int drm_msi = 1; /* Enable by default. */ 218 TUNABLE_INT("hw.drm.msi", &drm_msi); 219 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 220 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, 221 "Enable MSI interrupts for drm devices"); 222 223 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 224 {0x8086, 0x2772}, /* Intel i945G */ \ 225 {0x8086, 0x27A2}, /* Intel i945GM */ \ 226 {0x8086, 0x27AE}, /* Intel i945GME */ \ 227 {0, 0} 228 }; 229 230 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 231 { 232 int i = 0; 233 234 if (dev->driver->use_msi != NULL) { 235 int use_msi; 236 237 use_msi = dev->driver->use_msi(dev, flags); 238 239 return (!use_msi); 240 } 241 242 /* TODO: Maybe move this to a callback in i915? */ 243 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 244 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 245 (drm_msi_blacklist[i].device == dev->pci_device)) { 246 return 1; 247 } 248 } 249 250 return 0; 251 } 252 253 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 254 { 255 drm_pci_id_list_t *id_entry; 256 int vendor, device; 257 258 vendor = pci_get_vendor(kdev); 259 device = pci_get_device(kdev); 260 261 if (pci_get_class(kdev) != PCIC_DISPLAY) 262 return ENXIO; 263 264 id_entry = drm_find_description(vendor, device, idlist); 265 if (id_entry != NULL) { 266 if (!device_get_desc(kdev)) { 267 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 268 device_set_desc(kdev, id_entry->name); 269 } 270 return 0; 271 } 272 273 return ENXIO; 274 } 275 276 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 277 { 278 struct drm_device *dev; 279 drm_pci_id_list_t *id_entry; 280 int unit, error, msicount; 281 int rid = 0; 282 283 unit = device_get_unit(kdev); 284 dev = device_get_softc(kdev); 285 286 if (!strcmp(device_get_name(kdev), "drmsub")) 287 dev->dev = device_get_parent(kdev); 288 else 289 dev->dev = kdev; 290 291 dev->pci_domain = pci_get_domain(dev->dev); 292 dev->pci_bus = pci_get_bus(dev->dev); 293 dev->pci_slot = pci_get_slot(dev->dev); 294 dev->pci_func = pci_get_function(dev->dev); 295 296 dev->pci_vendor = pci_get_vendor(dev->dev); 297 dev->pci_device = pci_get_device(dev->dev); 298 dev->pci_subvendor = pci_get_subvendor(dev->dev); 299 dev->pci_subdevice = pci_get_subdevice(dev->dev); 300 301 id_entry = drm_find_description(dev->pci_vendor, 302 dev->pci_device, idlist); 303 dev->id_entry = id_entry; 304 305 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 306 if (drm_msi && 307 !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 308 msicount = pci_msi_count(dev->dev); 309 DRM_DEBUG("MSI count = %d\n", msicount); 310 if (msicount > 1) 311 msicount = 1; 312 313 if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) { 314 DRM_INFO("MSI enabled %d message(s)\n", 315 msicount); 316 dev->msi_enabled = 1; 317 dev->irqrid = rid; 318 } 319 } 320 321 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, 322 &dev->irqrid, RF_SHAREABLE); 323 if (!dev->irqr) { 324 return (ENOENT); 325 } 326 327 dev->irq = (int) rman_get_start(dev->irqr); 328 } 329 330 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 331 lwkt_serialize_init(&dev->irq_lock); 332 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 333 lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 334 335 error = drm_load(dev); 336 if (error) 337 goto error; 338 339 error = drm_create_cdevs(kdev); 340 if (error) 341 goto error; 342 343 return (error); 344 error: 345 if (dev->irqr) { 346 bus_release_resource(dev->dev, SYS_RES_IRQ, 347 dev->irqrid, dev->irqr); 348 } 349 if (dev->msi_enabled) { 350 pci_release_msi(dev->dev); 351 } 352 return (error); 353 } 354 355 int 356 drm_create_cdevs(device_t kdev) 357 { 358 struct drm_device *dev; 359 int error, unit; 360 361 unit = device_get_unit(kdev); 362 dev = device_get_softc(kdev); 363 364 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 365 DRM_DEV_MODE, "dri/card%d", unit); 366 error = 0; 367 if (error == 0) 368 dev->devnode->si_drv1 = dev; 369 return (error); 370 } 371 372 #ifndef DRM_DEV_NAME 373 #define DRM_DEV_NAME "drm" 374 #endif 375 376 devclass_t drm_devclass; 377 378 drm_pci_id_list_t *drm_find_description(int vendor, int device, 379 drm_pci_id_list_t *idlist) 380 { 381 int i = 0; 382 383 for (i = 0; idlist[i].vendor != 0; i++) { 384 if ((idlist[i].vendor == vendor) && 385 ((idlist[i].device == device) || 386 (idlist[i].device == 0))) { 387 return &idlist[i]; 388 } 389 } 390 return NULL; 391 } 392 393 /** 394 * Take down the DRM device. 395 * 396 * \param dev DRM device structure. 397 * 398 * Frees every resource in \p dev. 399 * 400 * \sa drm_device 401 */ 402 int drm_lastclose(struct drm_device * dev) 403 { 404 drm_magic_entry_t *pt, *next; 405 406 DRM_DEBUG("\n"); 407 408 if (dev->driver->lastclose != NULL) 409 dev->driver->lastclose(dev); 410 411 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 412 drm_irq_uninstall(dev); 413 414 DRM_LOCK(dev); 415 if (dev->unique) { 416 drm_free(dev->unique, M_DRM); 417 dev->unique = NULL; 418 dev->unique_len = 0; 419 } 420 421 /* Clear pid list */ 422 if (dev->magicfree.next) { 423 list_for_each_entry_safe(pt, next, &dev->magicfree, head) { 424 list_del(&pt->head); 425 drm_ht_remove_item(&dev->magiclist, &pt->hash_item); 426 kfree(pt); 427 } 428 drm_ht_remove(&dev->magiclist); 429 } 430 431 /* Clear AGP information */ 432 if (dev->agp) { 433 drm_agp_mem_t *entry; 434 drm_agp_mem_t *nexte; 435 436 /* Remove AGP resources, but leave dev->agp intact until 437 * drm_unload is called. 438 */ 439 for (entry = dev->agp->memory; entry; entry = nexte) { 440 nexte = entry->next; 441 if (entry->bound) 442 drm_agp_unbind_memory(entry->handle); 443 drm_agp_free_memory(entry->handle); 444 drm_free(entry, M_DRM); 445 } 446 dev->agp->memory = NULL; 447 448 if (dev->agp->acquired) 449 drm_agp_release(dev); 450 451 dev->agp->acquired = 0; 452 dev->agp->enabled = 0; 453 } 454 if (dev->sg != NULL) { 455 drm_sg_cleanup(dev->sg); 456 dev->sg = NULL; 457 } 458 459 drm_dma_takedown(dev); 460 if (dev->lock.hw_lock) { 461 dev->lock.hw_lock = NULL; /* SHM removed */ 462 dev->lock.file_priv = NULL; 463 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 464 } 465 DRM_UNLOCK(dev); 466 467 return 0; 468 } 469 470 static int drm_load(struct drm_device *dev) 471 { 472 int i, retcode; 473 474 DRM_DEBUG("\n"); 475 476 INIT_LIST_HEAD(&dev->maplist); 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->struct_mutex); 563 564 return retcode; 565 } 566 567 /** 568 * Get version information 569 * 570 * \param inode device inode. 571 * \param filp file pointer. 572 * \param cmd command. 573 * \param arg user argument, pointing to a drm_version structure. 574 * \return zero on success or negative number on failure. 575 * 576 * Fills in the version information in \p arg. 577 */ 578 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 579 { 580 struct drm_version *version = data; 581 int len; 582 583 #define DRM_COPY( name, value ) \ 584 len = strlen( value ); \ 585 if ( len > name##_len ) len = name##_len; \ 586 name##_len = strlen( value ); \ 587 if ( len && name ) { \ 588 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 589 return EFAULT; \ 590 } 591 592 version->version_major = dev->driver->major; 593 version->version_minor = dev->driver->minor; 594 version->version_patchlevel = dev->driver->patchlevel; 595 596 DRM_COPY(version->name, dev->driver->name); 597 DRM_COPY(version->date, dev->driver->date); 598 DRM_COPY(version->desc, dev->driver->desc); 599 600 return 0; 601 } 602 603 /* 604 * Stub is needed for devfs 605 */ 606 int drm_close(struct dev_close_args *ap) 607 { 608 return 0; 609 } 610 611 void drm_cdevpriv_dtor(void *cd) 612 { 613 struct drm_file *file_priv = cd; 614 struct drm_device *dev = file_priv->dev; 615 int retcode = 0; 616 617 DRM_DEBUG("open_count = %d\n", dev->open_count); 618 619 DRM_LOCK(dev); 620 621 if (dev->driver->preclose != NULL) 622 dev->driver->preclose(dev, file_priv); 623 624 /* ======================================================== 625 * Begin inline drm_release 626 */ 627 628 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 629 DRM_CURRENTPID, (long)dev->dev, dev->open_count); 630 631 if (dev->driver->driver_features & DRIVER_GEM) 632 drm_gem_release(dev, file_priv); 633 634 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 635 && dev->lock.file_priv == file_priv) { 636 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 637 DRM_CURRENTPID, 638 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 639 if (dev->driver->reclaim_buffers_locked != NULL) 640 dev->driver->reclaim_buffers_locked(dev, file_priv); 641 642 drm_lock_free(&dev->lock, 643 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 644 645 /* FIXME: may require heavy-handed reset of 646 hardware at this point, possibly 647 processed via a callback to the X 648 server. */ 649 } else if (dev->driver->reclaim_buffers_locked != NULL && 650 dev->lock.hw_lock != NULL) { 651 /* The lock is required to reclaim buffers */ 652 for (;;) { 653 if (!dev->lock.hw_lock) { 654 /* Device has been unregistered */ 655 retcode = EINTR; 656 break; 657 } 658 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 659 dev->lock.file_priv = file_priv; 660 dev->lock.lock_time = jiffies; 661 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 662 break; /* Got lock */ 663 } 664 /* Contention */ 665 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 666 PCATCH, "drmlk2", 0); 667 if (retcode) 668 break; 669 } 670 if (retcode == 0) { 671 dev->driver->reclaim_buffers_locked(dev, file_priv); 672 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 673 } 674 } 675 676 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 677 !dev->driver->reclaim_buffers_locked) 678 drm_reclaim_buffers(dev, file_priv); 679 680 funsetown(&dev->buf_sigio); 681 682 if (dev->driver->postclose != NULL) 683 dev->driver->postclose(dev, file_priv); 684 list_del(&file_priv->lhead); 685 686 687 /* ======================================================== 688 * End inline drm_release 689 */ 690 691 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 692 device_unbusy(dev->dev); 693 if (--dev->open_count == 0) { 694 retcode = drm_lastclose(dev); 695 } 696 697 DRM_UNLOCK(dev); 698 } 699 700 /** 701 * Called whenever a process performs an ioctl on /dev/drm. 702 * 703 * \param inode device inode. 704 * \param file_priv DRM file private. 705 * \param cmd command. 706 * \param arg user argument. 707 * \return zero on success or negative number on failure. 708 * 709 * Looks up the ioctl function in the ::ioctls table, checking for root 710 * previleges if so required, and dispatches to the respective function. 711 */ 712 int drm_ioctl(struct dev_ioctl_args *ap) 713 { 714 struct cdev *kdev = ap->a_head.a_dev; 715 u_long cmd = ap->a_cmd; 716 caddr_t data = ap->a_data; 717 struct thread *p = curthread; 718 struct drm_device *dev = drm_get_device_from_kdev(kdev); 719 int retcode = 0; 720 struct drm_ioctl_desc *ioctl; 721 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 722 int nr = DRM_IOCTL_NR(cmd); 723 int is_driver_ioctl = 0; 724 struct drm_file *file_priv; 725 726 retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); 727 if (retcode !=0) { 728 DRM_ERROR("can't find authenticator\n"); 729 return EINVAL; 730 } 731 732 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 733 734 DRM_DEBUG_VERBOSE("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 735 DRM_CURRENTPID, cmd, nr, (long)dev->dev, 736 file_priv->authenticated); 737 738 switch (cmd) { 739 case FIONBIO: 740 case FIOASYNC: 741 return 0; 742 743 case FIOSETOWN: 744 return fsetown(*(int *)data, &dev->buf_sigio); 745 746 case FIOGETOWN: 747 *(int *) data = fgetown(&dev->buf_sigio); 748 return 0; 749 } 750 751 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 752 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 753 return EINVAL; 754 } 755 756 ioctl = &drm_ioctls[nr]; 757 /* It's not a core DRM ioctl, try driver-specific. */ 758 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 759 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 760 nr -= DRM_COMMAND_BASE; 761 if (nr > dev->driver->num_ioctls) { 762 return EINVAL; 763 } 764 ioctl = &dev->driver->ioctls[nr]; 765 is_driver_ioctl = 1; 766 } 767 func = ioctl->func; 768 769 if (func == NULL) { 770 DRM_DEBUG("no function\n"); 771 return EINVAL; 772 } 773 774 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 775 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 776 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 777 return EACCES; 778 779 if (is_driver_ioctl) { 780 if ((ioctl->flags & DRM_UNLOCKED) == 0) 781 DRM_LOCK(dev); 782 /* shared code returns -errno */ 783 retcode = -func(dev, data, file_priv); 784 if ((ioctl->flags & DRM_UNLOCKED) == 0) 785 DRM_UNLOCK(dev); 786 } else { 787 retcode = func(dev, data, file_priv); 788 } 789 790 if (retcode != 0) 791 DRM_DEBUG(" returning %d\n", retcode); 792 if (retcode != 0 && 793 (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 794 kprintf( 795 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 796 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->dev, 797 file_priv->authenticated, retcode); 798 } 799 800 return retcode; 801 } 802 803 drm_local_map_t *drm_getsarea(struct drm_device *dev) 804 { 805 struct drm_map_list *entry; 806 807 list_for_each_entry(entry, &dev->maplist, head) { 808 if (entry->map && entry->map->type == _DRM_SHM && 809 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 810 return entry->map; 811 } 812 } 813 814 return NULL; 815 } 816 817 int 818 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 819 struct sysctl_oid *top) 820 { 821 struct sysctl_oid *oid; 822 823 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 824 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 825 dev->pci_slot, dev->pci_func); 826 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 827 CTLFLAG_RD, dev->busid_str, 0, NULL); 828 if (oid == NULL) 829 return (ENOMEM); 830 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 831 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 832 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 833 if (oid == NULL) 834 return (ENOMEM); 835 836 return (0); 837 } 838 839 int 840 drm_mmap_single(struct dev_mmap_single_args *ap) 841 { 842 struct drm_device *dev; 843 struct cdev *kdev = ap->a_head.a_dev; 844 vm_ooffset_t *offset = ap->a_offset; 845 vm_size_t size = ap->a_size; 846 struct vm_object **obj_res = ap->a_object; 847 int nprot = ap->a_nprot; 848 849 dev = drm_get_device_from_kdev(kdev); 850 if (dev->drm_ttm_bdev != NULL) { 851 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 852 obj_res, nprot)); 853 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 854 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 855 } else { 856 return (ENODEV); 857 } 858 } 859 860 #if DRM_LINUX 861 862 #include <sys/sysproto.h> 863 864 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 865 866 #define LINUX_IOCTL_DRM_MIN 0x6400 867 #define LINUX_IOCTL_DRM_MAX 0x64ff 868 869 static linux_ioctl_function_t drm_linux_ioctl; 870 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 871 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 872 873 /* The bits for in/out are switched on Linux */ 874 #define LINUX_IOC_IN IOC_OUT 875 #define LINUX_IOC_OUT IOC_IN 876 877 static int 878 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 879 { 880 int error; 881 int cmd = args->cmd; 882 883 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 884 if (cmd & LINUX_IOC_IN) 885 args->cmd |= IOC_IN; 886 if (cmd & LINUX_IOC_OUT) 887 args->cmd |= IOC_OUT; 888 889 error = ioctl(p, (struct ioctl_args *)args); 890 891 return error; 892 } 893 #endif /* DRM_LINUX */ 894 895 static int 896 drm_core_init(void *arg) 897 { 898 899 drm_global_init(); 900 901 #if DRM_LINUX 902 linux_ioctl_register_handler(&drm_handler); 903 #endif /* DRM_LINUX */ 904 905 DRM_INFO("Initialized %s %d.%d.%d %s\n", 906 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 907 return 0; 908 } 909 910 static void 911 drm_core_exit(void *arg) 912 { 913 914 #if DRM_LINUX 915 linux_ioctl_unregister_handler(&drm_handler); 916 #endif /* DRM_LINUX */ 917 918 drm_global_release(); 919 } 920 921 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 922 drm_core_init, NULL); 923 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 924 drm_core_exit, NULL); 925 926 /* 927 * Check if dmi_system_id structure matches system DMI data 928 */ 929 static bool 930 dmi_found(const struct dmi_system_id *dsi) 931 { 932 int i, slot; 933 bool found = false; 934 char *sys_vendor, *board_vendor, *product_name, *board_name; 935 936 sys_vendor = kgetenv("smbios.system.maker"); 937 board_vendor = kgetenv("smbios.planar.maker"); 938 product_name = kgetenv("smbios.system.product"); 939 board_name = kgetenv("smbios.planar.product"); 940 941 for (i = 0; i < NELEM(dsi->matches); i++) { 942 slot = dsi->matches[i].slot; 943 switch (slot) { 944 case DMI_NONE: 945 break; 946 case DMI_SYS_VENDOR: 947 if (sys_vendor != NULL && 948 !strcmp(sys_vendor, dsi->matches[i].substr)) 949 break; 950 else 951 goto done; 952 case DMI_BOARD_VENDOR: 953 if (board_vendor != NULL && 954 !strcmp(board_vendor, dsi->matches[i].substr)) 955 break; 956 else 957 goto done; 958 case DMI_PRODUCT_NAME: 959 if (product_name != NULL && 960 !strcmp(product_name, dsi->matches[i].substr)) 961 break; 962 else 963 goto done; 964 case DMI_BOARD_NAME: 965 if (board_name != NULL && 966 !strcmp(board_name, dsi->matches[i].substr)) 967 break; 968 else 969 goto done; 970 default: 971 goto done; 972 } 973 } 974 found = true; 975 976 done: 977 if (sys_vendor != NULL) 978 kfreeenv(sys_vendor); 979 if (board_vendor != NULL) 980 kfreeenv(board_vendor); 981 if (product_name != NULL) 982 kfreeenv(product_name); 983 if (board_name != NULL) 984 kfreeenv(board_name); 985 986 return found; 987 } 988 989 bool 990 dmi_check_system(const struct dmi_system_id *sysid) 991 { 992 const struct dmi_system_id *dsi; 993 int num = 0; 994 995 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 996 if (dmi_found(dsi)) { 997 num++; 998 if (dsi->callback && dsi->callback(dsi)) 999 break; 1000 } 1001 } 1002 return (num); 1003 } 1004 1005