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 #ifdef DRM_DEBUG_DEFAULT_ON 56 int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 57 DRM_DEBUGBITS_FAILED_IOCTL); 58 #else 59 int drm_debug = 0; 60 #endif 61 int drm_notyet_flag = 0; 62 63 unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ 64 unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ 65 66 static int drm_load(struct drm_device *dev); 67 drm_pci_id_list_t *drm_find_description(int vendor, int device, 68 drm_pci_id_list_t *idlist); 69 70 #define DRIVER_SOFTC(unit) \ 71 ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) 72 73 static int 74 drm_modevent(module_t mod, int type, void *data) 75 { 76 77 switch (type) { 78 case MOD_LOAD: 79 TUNABLE_INT_FETCH("drm.debug", &drm_debug); 80 TUNABLE_INT_FETCH("drm.notyet", &drm_notyet_flag); 81 break; 82 } 83 return (0); 84 } 85 86 static moduledata_t drm_mod = { 87 "drm", 88 drm_modevent, 89 0 90 }; 91 DECLARE_MODULE(drm, drm_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 92 MODULE_VERSION(drm, 1); 93 MODULE_DEPEND(drm, agp, 1, 1, 1); 94 MODULE_DEPEND(drm, pci, 1, 1, 1); 95 MODULE_DEPEND(drm, iicbus, 1, 1, 1); 96 97 #define DRM_IOCTL_DEF(ioctl, func, flags) \ 98 [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags} 99 100 /** Ioctl table */ 101 static struct drm_ioctl_desc drm_ioctls[256] = { 102 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), 103 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), 104 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), 105 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), 106 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), 107 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), 108 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), 109 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 110 DRM_IOCTL_DEF(DRM_IOCTL_SET_CLIENT_CAP, drm_setclientcap, 0), 111 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), 112 113 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 114 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 115 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 116 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 117 118 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 120 121 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 122 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 123 124 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 125 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 126 127 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 128 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 129 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 130 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 131 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 132 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 133 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 134 135 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 136 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 137 138 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 139 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 140 141 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 142 143 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 144 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 145 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 146 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 147 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 148 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 149 150 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 151 152 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 153 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 154 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 155 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 156 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 157 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 158 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 159 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 160 161 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 162 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 163 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 164 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 165 166 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 167 168 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 170 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 171 172 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 173 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 174 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 176 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 177 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), 180 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 181 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 182 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 183 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 184 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 185 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), 186 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 187 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 188 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 189 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 190 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 191 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 192 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 193 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 194 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 195 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 196 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 197 }; 198 199 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) 200 201 static struct dev_ops drm_cdevsw = { 202 { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 203 .d_open = drm_open, 204 .d_close = drm_close, 205 .d_read = drm_read, 206 .d_ioctl = drm_ioctl, 207 .d_kqfilter = drm_kqfilter, 208 .d_mmap = drm_mmap, 209 .d_mmap_single = drm_mmap_single, 210 }; 211 212 static int drm_msi = 1; /* Enable by default. */ 213 TUNABLE_INT("hw.drm.msi", &drm_msi); 214 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 215 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, 216 "Enable MSI interrupts for drm devices"); 217 218 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 219 {0x8086, 0x2772}, /* Intel i945G */ \ 220 {0x8086, 0x27A2}, /* Intel i945GM */ \ 221 {0x8086, 0x27AE}, /* Intel i945GME */ \ 222 {0, 0} 223 }; 224 225 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 226 { 227 int i = 0; 228 229 if (dev->driver->use_msi != NULL) { 230 int use_msi; 231 232 use_msi = dev->driver->use_msi(dev, flags); 233 234 return (!use_msi); 235 } 236 237 /* TODO: Maybe move this to a callback in i915? */ 238 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 239 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 240 (drm_msi_blacklist[i].device == dev->pci_device)) { 241 return 1; 242 } 243 } 244 245 return 0; 246 } 247 248 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 249 { 250 drm_pci_id_list_t *id_entry; 251 int vendor, device; 252 253 vendor = pci_get_vendor(kdev); 254 device = pci_get_device(kdev); 255 256 if (pci_get_class(kdev) != PCIC_DISPLAY) 257 return ENXIO; 258 259 id_entry = drm_find_description(vendor, device, idlist); 260 if (id_entry != NULL) { 261 if (!device_get_desc(kdev)) { 262 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 263 device_set_desc(kdev, id_entry->name); 264 } 265 return 0; 266 } 267 268 return ENXIO; 269 } 270 271 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 272 { 273 struct drm_device *dev; 274 drm_pci_id_list_t *id_entry; 275 int unit, error, msicount; 276 int rid = 0; 277 278 unit = device_get_unit(kdev); 279 dev = device_get_softc(kdev); 280 281 if (!strcmp(device_get_name(kdev), "drmsub")) 282 dev->dev = device_get_parent(kdev); 283 else 284 dev->dev = kdev; 285 286 dev->pci_domain = pci_get_domain(dev->dev); 287 dev->pci_bus = pci_get_bus(dev->dev); 288 dev->pci_slot = pci_get_slot(dev->dev); 289 dev->pci_func = pci_get_function(dev->dev); 290 291 dev->pci_vendor = pci_get_vendor(dev->dev); 292 dev->pci_device = pci_get_device(dev->dev); 293 dev->pci_subvendor = pci_get_subvendor(dev->dev); 294 dev->pci_subdevice = pci_get_subdevice(dev->dev); 295 296 id_entry = drm_find_description(dev->pci_vendor, 297 dev->pci_device, idlist); 298 dev->id_entry = id_entry; 299 300 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 301 if (drm_msi && 302 !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 303 msicount = pci_msi_count(dev->dev); 304 DRM_DEBUG("MSI count = %d\n", msicount); 305 if (msicount > 1) 306 msicount = 1; 307 308 if (pci_alloc_msi(dev->dev, &rid, msicount, -1) == 0) { 309 DRM_INFO("MSI enabled %d message(s)\n", 310 msicount); 311 dev->msi_enabled = 1; 312 dev->irqrid = rid; 313 } 314 } 315 316 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, 317 &dev->irqrid, RF_SHAREABLE); 318 if (!dev->irqr) { 319 return (ENOENT); 320 } 321 322 dev->irq = (int) rman_get_start(dev->irqr); 323 } 324 325 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 326 lwkt_serialize_init(&dev->irq_lock); 327 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 328 lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 329 330 error = drm_load(dev); 331 if (error) 332 goto error; 333 334 error = drm_create_cdevs(kdev); 335 if (error) 336 goto error; 337 338 return (error); 339 error: 340 if (dev->irqr) { 341 bus_release_resource(dev->dev, SYS_RES_IRQ, 342 dev->irqrid, dev->irqr); 343 } 344 if (dev->msi_enabled) { 345 pci_release_msi(dev->dev); 346 } 347 return (error); 348 } 349 350 int 351 drm_create_cdevs(device_t kdev) 352 { 353 struct drm_device *dev; 354 int error, unit; 355 356 unit = device_get_unit(kdev); 357 dev = device_get_softc(kdev); 358 359 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 360 DRM_DEV_MODE, "dri/card%d", unit); 361 error = 0; 362 if (error == 0) 363 dev->devnode->si_drv1 = dev; 364 return (error); 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 int drm_lastclose(struct drm_device * dev) 398 { 399 drm_magic_entry_t *pt, *next; 400 401 DRM_DEBUG("\n"); 402 403 if (dev->driver->lastclose != NULL) 404 dev->driver->lastclose(dev); 405 406 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 407 drm_irq_uninstall(dev); 408 409 DRM_LOCK(dev); 410 if (dev->unique) { 411 drm_free(dev->unique, M_DRM); 412 dev->unique = NULL; 413 dev->unique_len = 0; 414 } 415 416 /* Clear pid list */ 417 if (dev->magicfree.next) { 418 list_for_each_entry_safe(pt, next, &dev->magicfree, head) { 419 list_del(&pt->head); 420 drm_ht_remove_item(&dev->magiclist, &pt->hash_item); 421 kfree(pt); 422 } 423 drm_ht_remove(&dev->magiclist); 424 } 425 426 /* Clear AGP information */ 427 if (dev->agp) { 428 drm_agp_mem_t *entry; 429 drm_agp_mem_t *nexte; 430 431 /* Remove AGP resources, but leave dev->agp intact until 432 * drm_unload is called. 433 */ 434 for (entry = dev->agp->memory; entry; entry = nexte) { 435 nexte = entry->next; 436 if (entry->bound) 437 drm_agp_unbind_memory(entry->handle); 438 drm_agp_free_memory(entry->handle); 439 drm_free(entry, M_DRM); 440 } 441 dev->agp->memory = NULL; 442 443 if (dev->agp->acquired) 444 drm_agp_release(dev); 445 446 dev->agp->acquired = 0; 447 dev->agp->enabled = 0; 448 } 449 if (dev->sg != NULL) { 450 drm_sg_cleanup(dev->sg); 451 dev->sg = NULL; 452 } 453 454 drm_dma_takedown(dev); 455 if (dev->lock.hw_lock) { 456 dev->lock.hw_lock = NULL; /* SHM removed */ 457 dev->lock.file_priv = NULL; 458 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 459 } 460 DRM_UNLOCK(dev); 461 462 return 0; 463 } 464 465 static int drm_load(struct drm_device *dev) 466 { 467 int i, retcode; 468 469 DRM_DEBUG("\n"); 470 471 INIT_LIST_HEAD(&dev->maplist); 472 473 drm_mem_init(); 474 drm_sysctl_init(dev); 475 INIT_LIST_HEAD(&dev->filelist); 476 477 dev->counters = 6; 478 dev->types[0] = _DRM_STAT_LOCK; 479 dev->types[1] = _DRM_STAT_OPENS; 480 dev->types[2] = _DRM_STAT_CLOSES; 481 dev->types[3] = _DRM_STAT_IOCTLS; 482 dev->types[4] = _DRM_STAT_LOCKS; 483 dev->types[5] = _DRM_STAT_UNLOCKS; 484 485 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 486 atomic_set(&dev->counts[i], 0); 487 488 INIT_LIST_HEAD(&dev->vblank_event_list); 489 490 if (drm_core_has_AGP(dev)) { 491 if (drm_device_is_agp(dev)) 492 dev->agp = drm_agp_init(); 493 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 494 dev->agp == NULL) { 495 DRM_ERROR("Card isn't AGP, or couldn't initialize " 496 "AGP.\n"); 497 retcode = ENOMEM; 498 goto error; 499 } 500 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) { 501 if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base, 502 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0) 503 dev->agp->agp_mtrr = 1; 504 } 505 } 506 507 retcode = drm_ctxbitmap_init(dev); 508 if (retcode != 0) { 509 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 510 goto error; 511 } 512 513 if (dev->driver->driver_features & DRIVER_GEM) { 514 retcode = drm_gem_init(dev); 515 if (retcode != 0) { 516 DRM_ERROR("Cannot initialize graphics execution " 517 "manager (GEM)\n"); 518 goto error1; 519 } 520 } 521 522 if (dev->driver->load != NULL) { 523 DRM_LOCK(dev); 524 /* Shared code returns -errno. */ 525 retcode = -dev->driver->load(dev, 526 dev->id_entry->driver_private); 527 if (pci_enable_busmaster(dev->dev)) 528 DRM_ERROR("Request to enable bus-master failed.\n"); 529 DRM_UNLOCK(dev); 530 if (retcode != 0) 531 goto error1; 532 } 533 534 DRM_INFO("Initialized %s %d.%d.%d %s\n", 535 dev->driver->name, 536 dev->driver->major, 537 dev->driver->minor, 538 dev->driver->patchlevel, 539 dev->driver->date); 540 541 return 0; 542 543 error1: 544 drm_gem_destroy(dev); 545 error: 546 drm_ctxbitmap_cleanup(dev); 547 drm_sysctl_cleanup(dev); 548 DRM_LOCK(dev); 549 drm_lastclose(dev); 550 DRM_UNLOCK(dev); 551 if (dev->devnode != NULL) 552 destroy_dev(dev->devnode); 553 554 lockuninit(&dev->vbl_lock); 555 lockuninit(&dev->dev_lock); 556 lockuninit(&dev->event_lock); 557 lockuninit(&dev->struct_mutex); 558 559 return retcode; 560 } 561 562 /** 563 * Get version information 564 * 565 * \param inode device inode. 566 * \param filp file pointer. 567 * \param cmd command. 568 * \param arg user argument, pointing to a drm_version structure. 569 * \return zero on success or negative number on failure. 570 * 571 * Fills in the version information in \p arg. 572 */ 573 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 574 { 575 struct drm_version *version = data; 576 int len; 577 578 #define DRM_COPY( name, value ) \ 579 len = strlen( value ); \ 580 if ( len > name##_len ) len = name##_len; \ 581 name##_len = strlen( value ); \ 582 if ( len && name ) { \ 583 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 584 return EFAULT; \ 585 } 586 587 version->version_major = dev->driver->major; 588 version->version_minor = dev->driver->minor; 589 version->version_patchlevel = dev->driver->patchlevel; 590 591 DRM_COPY(version->name, dev->driver->name); 592 DRM_COPY(version->date, dev->driver->date); 593 DRM_COPY(version->desc, dev->driver->desc); 594 595 return 0; 596 } 597 598 /* 599 * Stub is needed for devfs 600 */ 601 int drm_close(struct dev_close_args *ap) 602 { 603 return 0; 604 } 605 606 void drm_cdevpriv_dtor(void *cd) 607 { 608 struct drm_file *file_priv = cd; 609 struct drm_device *dev = file_priv->dev; 610 int retcode = 0; 611 612 DRM_DEBUG("open_count = %d\n", dev->open_count); 613 614 DRM_LOCK(dev); 615 616 if (dev->driver->preclose != NULL) 617 dev->driver->preclose(dev, file_priv); 618 619 /* ======================================================== 620 * Begin inline drm_release 621 */ 622 623 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 624 DRM_CURRENTPID, (long)dev->dev, dev->open_count); 625 626 if (dev->driver->driver_features & DRIVER_GEM) 627 drm_gem_release(dev, file_priv); 628 629 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 630 && dev->lock.file_priv == file_priv) { 631 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 632 DRM_CURRENTPID, 633 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 634 if (dev->driver->reclaim_buffers_locked != NULL) 635 dev->driver->reclaim_buffers_locked(dev, file_priv); 636 637 drm_lock_free(&dev->lock, 638 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 639 640 /* FIXME: may require heavy-handed reset of 641 hardware at this point, possibly 642 processed via a callback to the X 643 server. */ 644 } else if (dev->driver->reclaim_buffers_locked != NULL && 645 dev->lock.hw_lock != NULL) { 646 /* The lock is required to reclaim buffers */ 647 for (;;) { 648 if (!dev->lock.hw_lock) { 649 /* Device has been unregistered */ 650 retcode = EINTR; 651 break; 652 } 653 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 654 dev->lock.file_priv = file_priv; 655 dev->lock.lock_time = jiffies; 656 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 657 break; /* Got lock */ 658 } 659 /* Contention */ 660 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 661 PCATCH, "drmlk2", 0); 662 if (retcode) 663 break; 664 } 665 if (retcode == 0) { 666 dev->driver->reclaim_buffers_locked(dev, file_priv); 667 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 668 } 669 } 670 671 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 672 !dev->driver->reclaim_buffers_locked) 673 drm_reclaim_buffers(dev, file_priv); 674 675 funsetown(&dev->buf_sigio); 676 677 if (dev->driver->postclose != NULL) 678 dev->driver->postclose(dev, file_priv); 679 list_del(&file_priv->lhead); 680 681 682 /* ======================================================== 683 * End inline drm_release 684 */ 685 686 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 687 device_unbusy(dev->dev); 688 if (--dev->open_count == 0) { 689 retcode = drm_lastclose(dev); 690 } 691 692 DRM_UNLOCK(dev); 693 } 694 695 /** 696 * Called whenever a process performs an ioctl on /dev/drm. 697 * 698 * \param inode device inode. 699 * \param file_priv DRM file private. 700 * \param cmd command. 701 * \param arg user argument. 702 * \return zero on success or negative number on failure. 703 * 704 * Looks up the ioctl function in the ::ioctls table, checking for root 705 * previleges if so required, and dispatches to the respective function. 706 */ 707 int drm_ioctl(struct dev_ioctl_args *ap) 708 { 709 struct cdev *kdev = ap->a_head.a_dev; 710 u_long cmd = ap->a_cmd; 711 caddr_t data = ap->a_data; 712 struct thread *p = curthread; 713 struct drm_device *dev = drm_get_device_from_kdev(kdev); 714 int retcode = 0; 715 struct drm_ioctl_desc *ioctl; 716 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 717 int nr = DRM_IOCTL_NR(cmd); 718 int is_driver_ioctl = 0; 719 struct drm_file *file_priv; 720 721 retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); 722 if (retcode !=0) { 723 DRM_ERROR("can't find authenticator\n"); 724 return EINVAL; 725 } 726 727 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 728 729 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 730 DRM_CURRENTPID, cmd, nr, (long)dev->dev, 731 file_priv->authenticated); 732 733 switch (cmd) { 734 case FIONBIO: 735 case FIOASYNC: 736 return 0; 737 738 case FIOSETOWN: 739 return fsetown(*(int *)data, &dev->buf_sigio); 740 741 case FIOGETOWN: 742 *(int *) data = fgetown(&dev->buf_sigio); 743 return 0; 744 } 745 746 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 747 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 748 return EINVAL; 749 } 750 751 ioctl = &drm_ioctls[nr]; 752 /* It's not a core DRM ioctl, try driver-specific. */ 753 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 754 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 755 nr -= DRM_COMMAND_BASE; 756 if (nr > dev->driver->num_ioctls) { 757 return EINVAL; 758 } 759 ioctl = &dev->driver->ioctls[nr]; 760 is_driver_ioctl = 1; 761 } 762 func = ioctl->func; 763 764 if (func == NULL) { 765 DRM_DEBUG("no function\n"); 766 return EINVAL; 767 } 768 769 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 770 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 771 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 772 return EACCES; 773 774 if (is_driver_ioctl) { 775 if ((ioctl->flags & DRM_UNLOCKED) == 0) 776 DRM_LOCK(dev); 777 /* shared code returns -errno */ 778 retcode = -func(dev, data, file_priv); 779 if ((ioctl->flags & DRM_UNLOCKED) == 0) 780 DRM_UNLOCK(dev); 781 } else { 782 retcode = func(dev, data, file_priv); 783 } 784 785 if (retcode != 0) 786 DRM_DEBUG(" returning %d\n", retcode); 787 if (retcode != 0 && 788 (drm_debug & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 789 kprintf( 790 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 791 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->dev, 792 file_priv->authenticated, retcode); 793 } 794 795 return retcode; 796 } 797 798 drm_local_map_t *drm_getsarea(struct drm_device *dev) 799 { 800 struct drm_map_list *entry; 801 802 list_for_each_entry(entry, &dev->maplist, head) { 803 if (entry->map && entry->map->type == _DRM_SHM && 804 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 805 return entry->map; 806 } 807 } 808 809 return NULL; 810 } 811 812 int 813 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 814 struct sysctl_oid *top) 815 { 816 struct sysctl_oid *oid; 817 818 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 819 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 820 dev->pci_slot, dev->pci_func); 821 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 822 CTLFLAG_RD, dev->busid_str, 0, NULL); 823 if (oid == NULL) 824 return (ENOMEM); 825 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 826 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 827 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 828 if (oid == NULL) 829 return (ENOMEM); 830 831 return (0); 832 } 833 834 int 835 drm_mmap_single(struct dev_mmap_single_args *ap) 836 { 837 struct drm_device *dev; 838 struct cdev *kdev = ap->a_head.a_dev; 839 vm_ooffset_t *offset = ap->a_offset; 840 vm_size_t size = ap->a_size; 841 struct vm_object **obj_res = ap->a_object; 842 int nprot = ap->a_nprot; 843 844 dev = drm_get_device_from_kdev(kdev); 845 if (dev->drm_ttm_bdev != NULL) { 846 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 847 obj_res, nprot)); 848 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 849 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 850 } else { 851 return (ENODEV); 852 } 853 } 854 855 #if DRM_LINUX 856 857 #include <sys/sysproto.h> 858 859 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 860 861 #define LINUX_IOCTL_DRM_MIN 0x6400 862 #define LINUX_IOCTL_DRM_MAX 0x64ff 863 864 static linux_ioctl_function_t drm_linux_ioctl; 865 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 866 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 867 868 /* The bits for in/out are switched on Linux */ 869 #define LINUX_IOC_IN IOC_OUT 870 #define LINUX_IOC_OUT IOC_IN 871 872 static int 873 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 874 { 875 int error; 876 int cmd = args->cmd; 877 878 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 879 if (cmd & LINUX_IOC_IN) 880 args->cmd |= IOC_IN; 881 if (cmd & LINUX_IOC_OUT) 882 args->cmd |= IOC_OUT; 883 884 error = ioctl(p, (struct ioctl_args *)args); 885 886 return error; 887 } 888 #endif /* DRM_LINUX */ 889 890 static int 891 drm_core_init(void *arg) 892 { 893 894 drm_global_init(); 895 896 #if DRM_LINUX 897 linux_ioctl_register_handler(&drm_handler); 898 #endif /* DRM_LINUX */ 899 900 DRM_INFO("Initialized %s %d.%d.%d %s\n", 901 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 902 return 0; 903 } 904 905 static void 906 drm_core_exit(void *arg) 907 { 908 909 #if DRM_LINUX 910 linux_ioctl_unregister_handler(&drm_handler); 911 #endif /* DRM_LINUX */ 912 913 drm_global_release(); 914 } 915 916 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 917 drm_core_init, NULL); 918 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 919 drm_core_exit, NULL); 920 921 /* 922 * Check if dmi_system_id structure matches system DMI data 923 */ 924 static bool 925 dmi_found(const struct dmi_system_id *dsi) 926 { 927 int i, slot; 928 bool found = false; 929 char *sys_vendor, *board_vendor, *product_name, *board_name; 930 931 sys_vendor = kgetenv("smbios.system.maker"); 932 board_vendor = kgetenv("smbios.planar.maker"); 933 product_name = kgetenv("smbios.system.product"); 934 board_name = kgetenv("smbios.planar.product"); 935 936 for (i = 0; i < NELEM(dsi->matches); i++) { 937 slot = dsi->matches[i].slot; 938 switch (slot) { 939 case DMI_NONE: 940 break; 941 case DMI_SYS_VENDOR: 942 if (sys_vendor != NULL && 943 !strcmp(sys_vendor, dsi->matches[i].substr)) 944 break; 945 else 946 goto done; 947 case DMI_BOARD_VENDOR: 948 if (board_vendor != NULL && 949 !strcmp(board_vendor, dsi->matches[i].substr)) 950 break; 951 else 952 goto done; 953 case DMI_PRODUCT_NAME: 954 if (product_name != NULL && 955 !strcmp(product_name, dsi->matches[i].substr)) 956 break; 957 else 958 goto done; 959 case DMI_BOARD_NAME: 960 if (board_name != NULL && 961 !strcmp(board_name, dsi->matches[i].substr)) 962 break; 963 else 964 goto done; 965 default: 966 goto done; 967 } 968 } 969 found = true; 970 971 done: 972 if (sys_vendor != NULL) 973 kfreeenv(sys_vendor); 974 if (board_vendor != NULL) 975 kfreeenv(board_vendor); 976 if (product_name != NULL) 977 kfreeenv(product_name); 978 if (board_name != NULL) 979 kfreeenv(board_name); 980 981 return found; 982 } 983 984 bool 985 dmi_check_system(const struct dmi_system_id *sysid) 986 { 987 const struct dmi_system_id *dsi; 988 int num = 0; 989 990 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 991 if (dmi_found(dsi)) { 992 num++; 993 if (dsi->callback && dsi->callback(dsi)) 994 break; 995 } 996 } 997 return (num); 998 } 999 1000