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_flag = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS | 45 DRM_DEBUGBITS_FAILED_IOCTL); 46 #else 47 int drm_debug_flag = 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 static 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_flag); 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_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, 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 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 150 151 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 152 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 153 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 154 155 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 156 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 157 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 158 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 159 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 160 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 161 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 162 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED), 163 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 164 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 165 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 166 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 167 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 168 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED), 169 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 170 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 171 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 172 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 173 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 174 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 176 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 177 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 180 }; 181 182 static struct dev_ops drm_cdevsw = { 183 { "drm", 0, D_TRACKCLOSE }, 184 .d_open = drm_open, 185 .d_close = drm_close, 186 .d_read = drm_read, 187 .d_ioctl = drm_ioctl, 188 .d_kqfilter = drm_kqfilter, 189 .d_mmap = drm_mmap, 190 .d_mmap_single = drm_mmap_single, 191 }; 192 193 static int drm_msi = 1; /* Enable by default. */ 194 TUNABLE_INT("hw.drm.msi", &drm_msi); 195 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 196 SYSCTL_INT(_hw_drm, OID_AUTO, msi, CTLFLAG_RD, &drm_msi, 1, 197 "Enable MSI interrupts for drm devices"); 198 199 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 200 {0x8086, 0x2772}, /* Intel i945G */ \ 201 {0x8086, 0x27A2}, /* Intel i945GM */ \ 202 {0x8086, 0x27AE}, /* Intel i945GME */ \ 203 {0, 0} 204 }; 205 206 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 207 { 208 int i = 0; 209 210 if (dev->driver->use_msi != NULL) { 211 int use_msi; 212 213 use_msi = dev->driver->use_msi(dev, flags); 214 215 return (!use_msi); 216 } 217 218 /* TODO: Maybe move this to a callback in i915? */ 219 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 220 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 221 (drm_msi_blacklist[i].device == dev->pci_device)) { 222 return 1; 223 } 224 } 225 226 return 0; 227 } 228 229 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 230 { 231 drm_pci_id_list_t *id_entry; 232 int vendor, device; 233 234 vendor = pci_get_vendor(kdev); 235 device = pci_get_device(kdev); 236 237 if (pci_get_class(kdev) != PCIC_DISPLAY) 238 return ENXIO; 239 240 id_entry = drm_find_description(vendor, device, idlist); 241 if (id_entry != NULL) { 242 if (!device_get_desc(kdev)) { 243 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 244 device_set_desc(kdev, id_entry->name); 245 } 246 return 0; 247 } 248 249 return ENXIO; 250 } 251 252 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 253 { 254 struct drm_device *dev; 255 drm_pci_id_list_t *id_entry; 256 int unit, error, msicount; 257 int rid = 0; 258 259 unit = device_get_unit(kdev); 260 dev = device_get_softc(kdev); 261 262 if (!strcmp(device_get_name(kdev), "drmsub")) 263 dev->device = device_get_parent(kdev); 264 else 265 dev->device = kdev; 266 267 dev->pci_domain = pci_get_domain(dev->device); 268 dev->pci_bus = pci_get_bus(dev->device); 269 dev->pci_slot = pci_get_slot(dev->device); 270 dev->pci_func = pci_get_function(dev->device); 271 272 dev->pci_vendor = pci_get_vendor(dev->device); 273 dev->pci_device = pci_get_device(dev->device); 274 dev->pci_subvendor = pci_get_subvendor(dev->device); 275 dev->pci_subdevice = pci_get_subdevice(dev->device); 276 277 id_entry = drm_find_description(dev->pci_vendor, 278 dev->pci_device, idlist); 279 dev->id_entry = id_entry; 280 281 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 282 if (drm_msi && 283 !drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 284 msicount = pci_msi_count(dev->device); 285 DRM_DEBUG("MSI count = %d\n", msicount); 286 if (msicount > 1) 287 msicount = 1; 288 289 if (pci_alloc_msi(dev->device, &rid, msicount, -1) == 0) { 290 DRM_INFO("MSI enabled %d message(s)\n", 291 msicount); 292 dev->msi_enabled = 1; 293 dev->irqrid = rid; 294 } 295 } 296 297 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 298 &dev->irqrid, RF_SHAREABLE); 299 if (!dev->irqr) { 300 return (ENOENT); 301 } 302 303 dev->irq = (int) rman_get_start(dev->irqr); 304 } 305 306 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 307 lwkt_serialize_init(&dev->irq_lock); 308 lockinit(&dev->vbl_lock, "drmvbl", 0, LK_CANRECURSE); 309 spin_init(&dev->drw_lock); 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->device, SYS_RES_IRQ, 325 dev->irqrid, dev->irqr); 326 } 327 if (dev->msi_enabled) { 328 pci_release_msi(dev->device); 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->device, SYS_RES_IRQ, dev->irqrid, 358 dev->irqr); 359 if (dev->msi_enabled) { 360 pci_release_msi(dev->device); 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 static int drm_firstopen(struct drm_device *dev) 389 { 390 drm_local_map_t *map; 391 int i; 392 393 DRM_LOCK_ASSERT(dev); 394 395 /* prebuild the SAREA */ 396 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, 397 _DRM_CONTAINS_LOCK, &map); 398 if (i != 0) 399 return i; 400 401 if (dev->driver->firstopen) 402 dev->driver->firstopen(dev); 403 404 dev->buf_use = 0; 405 406 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { 407 i = drm_dma_setup(dev); 408 if (i != 0) 409 return i; 410 } 411 412 for (i = 0; i < DRM_HASH_SIZE; i++) { 413 dev->magiclist[i].head = NULL; 414 dev->magiclist[i].tail = NULL; 415 } 416 417 dev->lock.lock_queue = 0; 418 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 419 dev->irq_enabled = 0; 420 dev->context_flag = 0; 421 dev->last_context = 0; 422 dev->if_version = 0; 423 424 dev->buf_sigio = NULL; 425 426 DRM_DEBUG("\n"); 427 428 return 0; 429 } 430 431 /** 432 * Take down the DRM device. 433 * 434 * \param dev DRM device structure. 435 * 436 * Frees every resource in \p dev. 437 * 438 * \sa drm_device 439 */ 440 static int drm_lastclose(struct drm_device *dev) 441 { 442 drm_magic_entry_t *pt, *next; 443 int i; 444 445 DRM_LOCK_ASSERT(dev); 446 447 DRM_DEBUG("\n"); 448 449 if (dev->driver->lastclose != NULL) 450 dev->driver->lastclose(dev); 451 452 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 453 drm_irq_uninstall(dev); 454 455 if (dev->unique) { 456 drm_free(dev->unique, DRM_MEM_DRIVER); 457 dev->unique = NULL; 458 dev->unique_len = 0; 459 } 460 /* Clear pid list */ 461 for (i = 0; i < DRM_HASH_SIZE; i++) { 462 for (pt = dev->magiclist[i].head; pt; pt = next) { 463 next = pt->next; 464 drm_free(pt, DRM_MEM_MAGIC); 465 } 466 dev->magiclist[i].head = dev->magiclist[i].tail = NULL; 467 } 468 469 DRM_UNLOCK(dev); 470 drm_drawable_free_all(dev); 471 DRM_LOCK(dev); 472 473 /* Clear AGP information */ 474 if (dev->agp) { 475 drm_agp_mem_t *entry; 476 drm_agp_mem_t *nexte; 477 478 /* Remove AGP resources, but leave dev->agp intact until 479 * drm_unload is called. 480 */ 481 for (entry = dev->agp->memory; entry; entry = nexte) { 482 nexte = entry->next; 483 if (entry->bound) 484 drm_agp_unbind_memory(entry->handle); 485 drm_agp_free_memory(entry->handle); 486 drm_free(entry, DRM_MEM_AGPLISTS); 487 } 488 dev->agp->memory = NULL; 489 490 if (dev->agp->acquired) 491 drm_agp_release(dev); 492 493 dev->agp->acquired = 0; 494 dev->agp->enabled = 0; 495 } 496 if (dev->sg != NULL) { 497 drm_sg_cleanup(dev->sg); 498 dev->sg = NULL; 499 } 500 501 drm_dma_takedown(dev); 502 if (dev->lock.hw_lock) { 503 dev->lock.hw_lock = NULL; /* SHM removed */ 504 dev->lock.file_priv = NULL; 505 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 506 } 507 508 return 0; 509 } 510 511 static int drm_load(struct drm_device *dev) 512 { 513 int i, retcode; 514 515 DRM_DEBUG("\n"); 516 517 INIT_LIST_HEAD(&dev->maplist); 518 dev->map_unrhdr = new_unrhdr(1, ((1 << DRM_MAP_HANDLE_BITS) - 1), NULL); 519 if (dev->map_unrhdr == NULL) { 520 DRM_ERROR("Couldn't allocate map number allocator\n"); 521 return EINVAL; 522 } 523 524 525 drm_mem_init(); 526 drm_sysctl_init(dev); 527 TAILQ_INIT(&dev->files); 528 529 dev->counters = 6; 530 dev->types[0] = _DRM_STAT_LOCK; 531 dev->types[1] = _DRM_STAT_OPENS; 532 dev->types[2] = _DRM_STAT_CLOSES; 533 dev->types[3] = _DRM_STAT_IOCTLS; 534 dev->types[4] = _DRM_STAT_LOCKS; 535 dev->types[5] = _DRM_STAT_UNLOCKS; 536 537 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 538 atomic_set(&dev->counts[i], 0); 539 540 INIT_LIST_HEAD(&dev->vblank_event_list); 541 542 if (drm_core_has_AGP(dev)) { 543 if (drm_device_is_agp(dev)) 544 dev->agp = drm_agp_init(); 545 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 546 dev->agp == NULL) { 547 DRM_ERROR("Card isn't AGP, or couldn't initialize " 548 "AGP.\n"); 549 retcode = ENOMEM; 550 goto error; 551 } 552 if (dev->agp != NULL && dev->agp->info.ai_aperture_base != 0) { 553 if (drm_mtrr_add(dev->agp->info.ai_aperture_base, 554 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) 555 dev->agp->mtrr = 1; 556 } 557 } 558 559 retcode = drm_ctxbitmap_init(dev); 560 if (retcode != 0) { 561 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 562 goto error; 563 } 564 565 dev->drw_unrhdr = new_unrhdr(1, INT_MAX, NULL); 566 if (dev->drw_unrhdr == NULL) { 567 DRM_ERROR("Couldn't allocate drawable number allocator\n"); 568 retcode = ENOMEM; 569 goto error; 570 } 571 572 if (dev->driver->driver_features & DRIVER_GEM) { 573 retcode = drm_gem_init(dev); 574 if (retcode != 0) { 575 DRM_ERROR("Cannot initialize graphics execution " 576 "manager (GEM)\n"); 577 goto error1; 578 } 579 } 580 581 if (dev->driver->load != NULL) { 582 DRM_LOCK(dev); 583 /* Shared code returns -errno. */ 584 retcode = -dev->driver->load(dev, 585 dev->id_entry->driver_private); 586 if (pci_enable_busmaster(dev->device)) 587 DRM_ERROR("Request to enable bus-master failed.\n"); 588 DRM_UNLOCK(dev); 589 if (retcode != 0) 590 goto error1; 591 } 592 593 DRM_INFO("Initialized %s %d.%d.%d %s\n", 594 dev->driver->name, 595 dev->driver->major, 596 dev->driver->minor, 597 dev->driver->patchlevel, 598 dev->driver->date); 599 600 return 0; 601 602 error1: 603 delete_unrhdr(dev->drw_unrhdr); 604 drm_gem_destroy(dev); 605 error: 606 drm_ctxbitmap_cleanup(dev); 607 drm_sysctl_cleanup(dev); 608 DRM_LOCK(dev); 609 drm_lastclose(dev); 610 DRM_UNLOCK(dev); 611 if (dev->devnode != NULL) 612 destroy_dev(dev->devnode); 613 614 spin_uninit(&dev->drw_lock); 615 lockuninit(&dev->vbl_lock); 616 lockuninit(&dev->dev_lock); 617 lockuninit(&dev->event_lock); 618 lockuninit(&dev->dev_struct_lock); 619 620 return retcode; 621 } 622 623 static void drm_unload(struct drm_device *dev) 624 { 625 int i; 626 627 DRM_DEBUG("\n"); 628 629 drm_sysctl_cleanup(dev); 630 if (dev->devnode != NULL) 631 destroy_dev(dev->devnode); 632 633 drm_ctxbitmap_cleanup(dev); 634 635 if (dev->driver->driver_features & DRIVER_GEM) 636 drm_gem_destroy(dev); 637 638 if (dev->agp && dev->agp->mtrr) { 639 int __unused retcode; 640 641 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, 642 dev->agp->info.ai_aperture_size, DRM_MTRR_WC); 643 DRM_DEBUG("mtrr_del = %d", retcode); 644 } 645 646 drm_vblank_cleanup(dev); 647 648 DRM_LOCK(dev); 649 drm_lastclose(dev); 650 DRM_UNLOCK(dev); 651 652 /* Clean up PCI resources allocated by drm_bufs.c. We're not really 653 * worried about resource consumption while the DRM is inactive (between 654 * lastclose and firstopen or unload) because these aren't actually 655 * taking up KVA, just keeping the PCI resource allocated. 656 */ 657 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { 658 if (dev->pcir[i] == NULL) 659 continue; 660 bus_release_resource(dev->device, SYS_RES_MEMORY, 661 dev->pcirid[i], dev->pcir[i]); 662 dev->pcir[i] = NULL; 663 } 664 665 if (dev->agp) { 666 drm_free(dev->agp, DRM_MEM_AGPLISTS); 667 dev->agp = NULL; 668 } 669 670 if (dev->driver->unload != NULL) { 671 DRM_LOCK(dev); 672 dev->driver->unload(dev); 673 DRM_UNLOCK(dev); 674 } 675 676 delete_unrhdr(dev->drw_unrhdr); 677 delete_unrhdr(dev->map_unrhdr); 678 679 drm_mem_uninit(); 680 681 if (pci_disable_busmaster(dev->device)) 682 DRM_ERROR("Request to disable bus-master failed.\n"); 683 684 spin_uninit(&dev->drw_lock); 685 lockuninit(&dev->vbl_lock); 686 lockuninit(&dev->dev_lock); 687 lockuninit(&dev->event_lock); 688 lockuninit(&dev->dev_struct_lock); 689 } 690 691 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 692 { 693 struct drm_version *version = data; 694 int len; 695 696 #define DRM_COPY( name, value ) \ 697 len = strlen( value ); \ 698 if ( len > name##_len ) len = name##_len; \ 699 name##_len = strlen( value ); \ 700 if ( len && name ) { \ 701 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 702 return EFAULT; \ 703 } 704 705 version->version_major = dev->driver->major; 706 version->version_minor = dev->driver->minor; 707 version->version_patchlevel = dev->driver->patchlevel; 708 709 DRM_COPY(version->name, dev->driver->name); 710 DRM_COPY(version->date, dev->driver->date); 711 DRM_COPY(version->desc, dev->driver->desc); 712 713 return 0; 714 } 715 716 int 717 /* drm_open(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p) */ 718 drm_open(struct dev_open_args *ap) 719 { 720 struct cdev *kdev = ap->a_head.a_dev; 721 int flags = ap->a_oflags; 722 int fmt = 0; 723 struct thread *p = curthread; 724 struct drm_device *dev; 725 int retcode; 726 727 dev = DRIVER_SOFTC(minor(kdev)); 728 if (dev == NULL) 729 return (ENXIO); 730 731 DRM_DEBUG("open_count = %d\n", dev->open_count); 732 733 retcode = drm_open_helper(kdev, flags, fmt, p, dev); 734 735 if (retcode == 0) { 736 atomic_inc(&dev->counts[_DRM_STAT_OPENS]); 737 DRM_LOCK(dev); 738 device_busy(dev->device); 739 if (!dev->open_count++) 740 retcode = drm_firstopen(dev); 741 DRM_UNLOCK(dev); 742 } 743 744 DRM_DEBUG("return %d\n", retcode); 745 746 return (retcode); 747 } 748 749 int drm_close(struct dev_close_args *ap) 750 { 751 struct cdev *kdev = ap->a_head.a_dev; 752 struct drm_file *file_priv; 753 struct drm_device *dev; 754 int retcode = 0; 755 756 dev = DRIVER_SOFTC(minor(kdev)); 757 file_priv = drm_find_file_by_proc(dev, curthread); 758 759 DRM_DEBUG("open_count = %d\n", dev->open_count); 760 761 DRM_LOCK(dev); 762 763 if (dev->driver->preclose != NULL) 764 dev->driver->preclose(dev, file_priv); 765 766 /* ======================================================== 767 * Begin inline drm_release 768 */ 769 770 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 771 DRM_CURRENTPID, (long)dev->device, dev->open_count); 772 773 if (dev->driver->driver_features & DRIVER_GEM) 774 drm_gem_release(dev, file_priv); 775 776 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 777 && dev->lock.file_priv == file_priv) { 778 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 779 DRM_CURRENTPID, 780 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 781 if (dev->driver->reclaim_buffers_locked != NULL) 782 dev->driver->reclaim_buffers_locked(dev, file_priv); 783 784 drm_lock_free(&dev->lock, 785 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 786 787 /* FIXME: may require heavy-handed reset of 788 hardware at this point, possibly 789 processed via a callback to the X 790 server. */ 791 } else if (dev->driver->reclaim_buffers_locked != NULL && 792 dev->lock.hw_lock != NULL) { 793 /* The lock is required to reclaim buffers */ 794 for (;;) { 795 if (!dev->lock.hw_lock) { 796 /* Device has been unregistered */ 797 retcode = EINTR; 798 break; 799 } 800 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 801 dev->lock.file_priv = file_priv; 802 dev->lock.lock_time = jiffies; 803 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 804 break; /* Got lock */ 805 } 806 /* Contention */ 807 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 808 PCATCH, "drmlk2", 0); 809 if (retcode) 810 break; 811 } 812 if (retcode == 0) { 813 dev->driver->reclaim_buffers_locked(dev, file_priv); 814 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 815 } 816 } 817 818 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 819 !dev->driver->reclaim_buffers_locked) 820 drm_reclaim_buffers(dev, file_priv); 821 822 funsetown(&dev->buf_sigio); 823 824 if (dev->driver->postclose != NULL) 825 dev->driver->postclose(dev, file_priv); 826 TAILQ_REMOVE(&dev->files, file_priv, link); 827 drm_free(file_priv, DRM_MEM_FILES); 828 829 /* ======================================================== 830 * End inline drm_release 831 */ 832 833 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 834 device_unbusy(dev->device); 835 if (--dev->open_count == 0) { 836 retcode = drm_lastclose(dev); 837 } 838 839 DRM_UNLOCK(dev); 840 841 return (0); 842 } 843 844 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. 845 */ 846 int drm_ioctl(struct dev_ioctl_args *ap) 847 { 848 struct cdev *kdev = ap->a_head.a_dev; 849 u_long cmd = ap->a_cmd; 850 caddr_t data = ap->a_data; 851 struct thread *p = curthread; 852 struct drm_device *dev = drm_get_device_from_kdev(kdev); 853 int retcode = 0; 854 drm_ioctl_desc_t *ioctl; 855 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 856 int nr = DRM_IOCTL_NR(cmd); 857 int is_driver_ioctl = 0; 858 struct drm_file *file_priv; 859 860 file_priv = drm_find_file_by_proc(dev, p); 861 862 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 863 ++file_priv->ioctl_count; 864 865 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 866 DRM_CURRENTPID, cmd, nr, (long)dev->device, 867 file_priv->authenticated); 868 869 switch (cmd) { 870 case FIONBIO: 871 case FIOASYNC: 872 return 0; 873 874 case FIOSETOWN: 875 return fsetown(*(int *)data, &dev->buf_sigio); 876 877 case FIOGETOWN: 878 *(int *) data = fgetown(&dev->buf_sigio); 879 return 0; 880 } 881 882 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 883 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 884 return EINVAL; 885 } 886 887 ioctl = &drm_ioctls[nr]; 888 /* It's not a core DRM ioctl, try driver-specific. */ 889 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 890 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 891 nr -= DRM_COMMAND_BASE; 892 if (nr > dev->driver->max_ioctl) { 893 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", 894 nr, dev->driver->max_ioctl); 895 return EINVAL; 896 } 897 ioctl = &dev->driver->ioctls[nr]; 898 is_driver_ioctl = 1; 899 } 900 func = ioctl->func; 901 902 if (func == NULL) { 903 DRM_DEBUG("no function\n"); 904 return EINVAL; 905 } 906 907 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 908 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 909 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 910 return EACCES; 911 912 if (is_driver_ioctl) { 913 if ((ioctl->flags & DRM_UNLOCKED) == 0) 914 DRM_LOCK(dev); 915 /* shared code returns -errno */ 916 retcode = -func(dev, data, file_priv); 917 if ((ioctl->flags & DRM_UNLOCKED) == 0) 918 DRM_UNLOCK(dev); 919 } else { 920 retcode = func(dev, data, file_priv); 921 } 922 923 if (retcode != 0) 924 DRM_DEBUG(" returning %d\n", retcode); 925 if (retcode != 0 && 926 (drm_debug_flag & DRM_DEBUGBITS_FAILED_IOCTL) != 0) { 927 kprintf( 928 "pid %d, cmd 0x%02lx, nr 0x%02x/%1d, dev 0x%lx, auth %d, res %d\n", 929 DRM_CURRENTPID, cmd, nr, is_driver_ioctl, (long)dev->device, 930 file_priv->authenticated, retcode); 931 } 932 933 return retcode; 934 } 935 936 drm_local_map_t *drm_getsarea(struct drm_device *dev) 937 { 938 struct drm_map_list *entry; 939 940 list_for_each_entry(entry, &dev->maplist, head) { 941 if (entry->map && entry->map->type == _DRM_SHM && 942 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 943 return entry->map; 944 } 945 } 946 947 return NULL; 948 } 949 950 int 951 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 952 struct sysctl_oid *top) 953 { 954 struct sysctl_oid *oid; 955 956 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 957 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 958 dev->pci_slot, dev->pci_func); 959 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 960 CTLFLAG_RD, dev->busid_str, 0, NULL); 961 if (oid == NULL) 962 return (ENOMEM); 963 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 964 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 965 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 966 if (oid == NULL) 967 return (ENOMEM); 968 969 return (0); 970 } 971 972 int 973 drm_mmap_single(struct dev_mmap_single_args *ap) 974 { 975 struct drm_device *dev; 976 struct cdev *kdev = ap->a_head.a_dev; 977 vm_ooffset_t *offset = ap->a_offset; 978 vm_size_t size = ap->a_size; 979 struct vm_object **obj_res = ap->a_object; 980 int nprot = ap->a_nprot; 981 982 dev = drm_get_device_from_kdev(kdev); 983 if (dev->drm_ttm_bdev != NULL) { 984 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 985 obj_res, nprot)); 986 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 987 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 988 } else { 989 return (ENODEV); 990 } 991 } 992 993 #if DRM_LINUX 994 995 #include <sys/sysproto.h> 996 997 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 998 999 #define LINUX_IOCTL_DRM_MIN 0x6400 1000 #define LINUX_IOCTL_DRM_MAX 0x64ff 1001 1002 static linux_ioctl_function_t drm_linux_ioctl; 1003 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 1004 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 1005 1006 /* The bits for in/out are switched on Linux */ 1007 #define LINUX_IOC_IN IOC_OUT 1008 #define LINUX_IOC_OUT IOC_IN 1009 1010 static int 1011 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 1012 { 1013 int error; 1014 int cmd = args->cmd; 1015 1016 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 1017 if (cmd & LINUX_IOC_IN) 1018 args->cmd |= IOC_IN; 1019 if (cmd & LINUX_IOC_OUT) 1020 args->cmd |= IOC_OUT; 1021 1022 error = ioctl(p, (struct ioctl_args *)args); 1023 1024 return error; 1025 } 1026 #endif /* DRM_LINUX */ 1027 1028 static int 1029 drm_core_init(void *arg) 1030 { 1031 1032 drm_global_init(); 1033 1034 #if DRM_LINUX 1035 linux_ioctl_register_handler(&drm_handler); 1036 #endif /* DRM_LINUX */ 1037 1038 DRM_INFO("Initialized %s %d.%d.%d %s\n", 1039 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 1040 return 0; 1041 } 1042 1043 static void 1044 drm_core_exit(void *arg) 1045 { 1046 1047 #if DRM_LINUX 1048 linux_ioctl_unregister_handler(&drm_handler); 1049 #endif /* DRM_LINUX */ 1050 1051 drm_global_release(); 1052 } 1053 1054 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 1055 drm_core_init, NULL); 1056 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 1057 drm_core_exit, NULL); 1058 1059 /* 1060 * Check if dmi_system_id structure matches system DMI data 1061 */ 1062 static bool 1063 dmi_found(const struct dmi_system_id *dsi) 1064 { 1065 int i, slot; 1066 bool found = false; 1067 char *sys_vendor, *board_vendor, *product_name, *board_name; 1068 1069 sys_vendor = kgetenv("smbios.system.maker"); 1070 board_vendor = kgetenv("smbios.planar.maker"); 1071 product_name = kgetenv("smbios.system.product"); 1072 board_name = kgetenv("smbios.planar.product"); 1073 1074 for (i = 0; i < NELEM(dsi->matches); i++) { 1075 slot = dsi->matches[i].slot; 1076 switch (slot) { 1077 case DMI_NONE: 1078 break; 1079 case DMI_SYS_VENDOR: 1080 if (sys_vendor != NULL && 1081 !strcmp(sys_vendor, dsi->matches[i].substr)) 1082 break; 1083 else 1084 goto done; 1085 case DMI_BOARD_VENDOR: 1086 if (board_vendor != NULL && 1087 !strcmp(board_vendor, dsi->matches[i].substr)) 1088 break; 1089 else 1090 goto done; 1091 case DMI_PRODUCT_NAME: 1092 if (product_name != NULL && 1093 !strcmp(product_name, dsi->matches[i].substr)) 1094 break; 1095 else 1096 goto done; 1097 case DMI_BOARD_NAME: 1098 if (board_name != NULL && 1099 !strcmp(board_name, dsi->matches[i].substr)) 1100 break; 1101 else 1102 goto done; 1103 default: 1104 goto done; 1105 } 1106 } 1107 found = true; 1108 1109 done: 1110 if (sys_vendor != NULL) 1111 kfreeenv(sys_vendor); 1112 if (board_vendor != NULL) 1113 kfreeenv(board_vendor); 1114 if (product_name != NULL) 1115 kfreeenv(product_name); 1116 if (board_name != NULL) 1117 kfreeenv(board_name); 1118 1119 return found; 1120 } 1121 1122 bool 1123 dmi_check_system(const struct dmi_system_id *sysid) 1124 { 1125 const struct dmi_system_id *dsi; 1126 int num = 0; 1127 1128 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 1129 if (dmi_found(dsi)) { 1130 num++; 1131 if (dsi->callback && dsi->callback(dsi)) 1132 break; 1133 } 1134 } 1135 return (num); 1136 } 1137 1138