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[] = { 107 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED), 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, DRM_UNLOCKED), 112 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, DRM_UNLOCKED), 113 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, DRM_UNLOCKED), 114 DRM_IOCTL_DEF(DRM_IOCTL_GET_CAP, drm_getcap, DRM_UNLOCKED), 115 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER), 116 117 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 118 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 119 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 120 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER), 121 122 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 123 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), 124 125 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 126 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), 127 128 DRM_IOCTL_DEF(DRM_IOCTL_SET_MASTER, drm_setmaster_ioctl, DRM_ROOT_ONLY), 129 DRM_IOCTL_DEF(DRM_IOCTL_DROP_MASTER, drm_dropmaster_ioctl, DRM_ROOT_ONLY), 130 131 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), 132 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 133 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 134 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), 135 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 136 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 137 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), 138 139 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 140 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 141 142 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), 143 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), 144 145 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), 146 147 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 148 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 149 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), 150 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), 151 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), 152 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), 153 154 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 155 156 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 157 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 158 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 159 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), 160 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 161 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 162 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 163 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 164 165 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 166 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 167 168 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, DRM_UNLOCKED), 169 170 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), 171 172 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), 173 174 DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED), 175 DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED), 176 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED), 177 178 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 179 180 #if 0 181 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_HANDLE_TO_FD, drm_prime_handle_to_fd_ioctl, DRM_AUTH|DRM_UNLOCKED), 182 DRM_IOCTL_DEF(DRM_IOCTL_PRIME_FD_TO_HANDLE, drm_prime_fd_to_handle_ioctl, DRM_AUTH|DRM_UNLOCKED), 183 #endif 184 185 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANERESOURCES, drm_mode_getplane_res, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 186 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 187 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 188 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPLANE, drm_mode_getplane, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 189 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPLANE, drm_mode_setplane, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 190 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 191 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_UNLOCKED), 192 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED), 193 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 194 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 195 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 196 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 197 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 198 DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 199 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 200 DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 201 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 202 DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 203 DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 204 DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 205 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 206 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CREATE_DUMB, drm_mode_create_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 207 DRM_IOCTL_DEF(DRM_IOCTL_MODE_MAP_DUMB, drm_mode_mmap_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 208 DRM_IOCTL_DEF(DRM_IOCTL_MODE_DESTROY_DUMB, drm_mode_destroy_dumb_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 209 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), 210 DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 211 DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), 212 }; 213 214 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) 215 216 static struct dev_ops drm_cdevsw = { 217 { "drm", 0, D_TRACKCLOSE | D_MPSAFE }, 218 .d_open = drm_open, 219 .d_close = drm_close, 220 .d_read = drm_read, 221 .d_ioctl = drm_ioctl, 222 .d_kqfilter = drm_kqfilter, 223 .d_mmap = drm_mmap, 224 .d_mmap_single = drm_mmap_single, 225 }; 226 227 static int drm_msi = 0; /* Disable by default. This is because there are issues with 228 freezes using MSI and i915 229 */ 230 TUNABLE_INT("hw.drm.msi.enable", &drm_msi); 231 SYSCTL_NODE(_hw, OID_AUTO, drm, CTLFLAG_RW, NULL, "DRM device"); 232 SYSCTL_NODE(_hw_drm, OID_AUTO, msi, CTLFLAG_RW, NULL, "DRM device msi"); 233 SYSCTL_INT(_hw_drm_msi, OID_AUTO, enable, CTLFLAG_RD, &drm_msi, 0, 234 "Enable MSI interrupts for drm devices"); 235 SYSCTL_INT(_hw_drm, OID_AUTO, debug, CTLFLAG_RW, &drm_debug, 0, 236 "DRM debugging"); 237 238 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { 239 {0x8086, 0x2772}, /* Intel i945G */ \ 240 {0x8086, 0x27A2}, /* Intel i945GM */ \ 241 {0x8086, 0x27AE}, /* Intel i945GME */ \ 242 {0, 0} 243 }; 244 245 static int drm_msi_is_blacklisted(struct drm_device *dev, unsigned long flags) 246 { 247 int i = 0; 248 249 if (dev->driver->use_msi != NULL) { 250 int use_msi; 251 252 use_msi = dev->driver->use_msi(dev, flags); 253 254 return (!use_msi); 255 } 256 257 /* TODO: Maybe move this to a callback in i915? */ 258 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { 259 if ((drm_msi_blacklist[i].vendor == dev->pci_vendor) && 260 (drm_msi_blacklist[i].device == dev->pci_device)) { 261 return 1; 262 } 263 } 264 265 return 0; 266 } 267 268 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) 269 { 270 drm_pci_id_list_t *id_entry; 271 int vendor, device; 272 273 vendor = pci_get_vendor(kdev); 274 device = pci_get_device(kdev); 275 276 if (pci_get_class(kdev) != PCIC_DISPLAY) 277 return ENXIO; 278 279 id_entry = drm_find_description(vendor, device, idlist); 280 if (id_entry != NULL) { 281 if (!device_get_desc(kdev)) { 282 DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); 283 device_set_desc(kdev, id_entry->name); 284 } 285 return 0; 286 } 287 288 return ENXIO; 289 } 290 291 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) 292 { 293 struct drm_device *dev; 294 drm_pci_id_list_t *id_entry; 295 int unit, error; 296 u_int irq_flags; 297 int msi_enable; 298 299 unit = device_get_unit(kdev); 300 dev = device_get_softc(kdev); 301 302 if (!strcmp(device_get_name(kdev), "drmsub")) 303 dev->dev = device_get_parent(kdev); 304 else 305 dev->dev = kdev; 306 307 dev->pci_domain = pci_get_domain(dev->dev); 308 dev->pci_bus = pci_get_bus(dev->dev); 309 dev->pci_slot = pci_get_slot(dev->dev); 310 dev->pci_func = pci_get_function(dev->dev); 311 312 dev->pci_vendor = pci_get_vendor(dev->dev); 313 dev->pci_device = pci_get_device(dev->dev); 314 dev->pci_subvendor = pci_get_subvendor(dev->dev); 315 dev->pci_subdevice = pci_get_subdevice(dev->dev); 316 317 id_entry = drm_find_description(dev->pci_vendor, 318 dev->pci_device, idlist); 319 dev->id_entry = id_entry; 320 321 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { 322 msi_enable = drm_msi; 323 324 if (drm_msi_is_blacklisted(dev, dev->id_entry->driver_private)) { 325 msi_enable = 0; 326 } 327 328 dev->irq_type = pci_alloc_1intr(dev->dev, msi_enable, 329 &dev->irqrid, &irq_flags); 330 331 dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ, 332 &dev->irqrid, irq_flags); 333 334 if (!dev->irqr) { 335 return (ENOENT); 336 } 337 338 dev->irq = (int) rman_get_start(dev->irqr); 339 } 340 341 lockinit(&dev->dev_lock, "drmdev", 0, LK_CANRECURSE); 342 lwkt_serialize_init(&dev->irq_lock); 343 lockinit(&dev->event_lock, "drmev", 0, LK_CANRECURSE); 344 lockinit(&dev->struct_mutex, "drmslk", 0, LK_CANRECURSE); 345 346 error = drm_load(dev); 347 if (error) 348 goto error; 349 350 error = drm_create_cdevs(kdev); 351 if (error) 352 goto error; 353 354 return (error); 355 error: 356 if (dev->irqr) { 357 bus_release_resource(dev->dev, SYS_RES_IRQ, 358 dev->irqrid, dev->irqr); 359 } 360 if (dev->irq_type == PCI_INTR_TYPE_MSI) { 361 pci_release_msi(dev->dev); 362 } 363 return (error); 364 } 365 366 int 367 drm_create_cdevs(device_t kdev) 368 { 369 struct drm_device *dev; 370 int error, unit; 371 372 unit = device_get_unit(kdev); 373 dev = device_get_softc(kdev); 374 375 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, 376 DRM_DEV_MODE, "dri/card%d", unit); 377 error = 0; 378 if (error == 0) 379 dev->devnode->si_drv1 = dev; 380 return (error); 381 } 382 383 #ifndef DRM_DEV_NAME 384 #define DRM_DEV_NAME "drm" 385 #endif 386 387 devclass_t drm_devclass; 388 389 drm_pci_id_list_t *drm_find_description(int vendor, int device, 390 drm_pci_id_list_t *idlist) 391 { 392 int i = 0; 393 394 for (i = 0; idlist[i].vendor != 0; i++) { 395 if ((idlist[i].vendor == vendor) && 396 ((idlist[i].device == device) || 397 (idlist[i].device == 0))) { 398 return &idlist[i]; 399 } 400 } 401 return NULL; 402 } 403 404 /** 405 * Take down the DRM device. 406 * 407 * \param dev DRM device structure. 408 * 409 * Frees every resource in \p dev. 410 * 411 * \sa drm_device 412 */ 413 int drm_lastclose(struct drm_device * dev) 414 { 415 drm_magic_entry_t *pt, *next; 416 417 DRM_DEBUG("\n"); 418 419 if (dev->driver->lastclose != NULL) 420 dev->driver->lastclose(dev); 421 422 if (!drm_core_check_feature(dev, DRIVER_MODESET) && dev->irq_enabled) 423 drm_irq_uninstall(dev); 424 425 DRM_LOCK(dev); 426 if (dev->unique) { 427 drm_free(dev->unique, M_DRM); 428 dev->unique = NULL; 429 dev->unique_len = 0; 430 } 431 432 /* Clear pid list */ 433 if (dev->magicfree.next) { 434 list_for_each_entry_safe(pt, next, &dev->magicfree, head) { 435 list_del(&pt->head); 436 drm_ht_remove_item(&dev->magiclist, &pt->hash_item); 437 kfree(pt); 438 } 439 drm_ht_remove(&dev->magiclist); 440 } 441 442 /* Clear AGP information */ 443 if (dev->agp) { 444 drm_agp_mem_t *entry; 445 drm_agp_mem_t *nexte; 446 447 /* Remove AGP resources, but leave dev->agp intact until 448 * drm_unload is called. 449 */ 450 for (entry = dev->agp->memory; entry; entry = nexte) { 451 nexte = entry->next; 452 if (entry->bound) 453 drm_agp_unbind_memory(entry->handle); 454 drm_agp_free_memory(entry->handle); 455 drm_free(entry, M_DRM); 456 } 457 dev->agp->memory = NULL; 458 459 if (dev->agp->acquired) 460 drm_agp_release(dev); 461 462 dev->agp->acquired = 0; 463 dev->agp->enabled = 0; 464 } 465 if (dev->sg != NULL) { 466 drm_sg_cleanup(dev->sg); 467 dev->sg = NULL; 468 } 469 470 drm_dma_takedown(dev); 471 if (dev->lock.hw_lock) { 472 dev->lock.hw_lock = NULL; /* SHM removed */ 473 dev->lock.file_priv = NULL; 474 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); 475 } 476 DRM_UNLOCK(dev); 477 478 return 0; 479 } 480 481 static int drm_load(struct drm_device *dev) 482 { 483 int i, retcode; 484 485 DRM_DEBUG("\n"); 486 487 INIT_LIST_HEAD(&dev->maplist); 488 489 drm_mem_init(); 490 drm_sysctl_init(dev); 491 INIT_LIST_HEAD(&dev->filelist); 492 493 dev->counters = 6; 494 dev->types[0] = _DRM_STAT_LOCK; 495 dev->types[1] = _DRM_STAT_OPENS; 496 dev->types[2] = _DRM_STAT_CLOSES; 497 dev->types[3] = _DRM_STAT_IOCTLS; 498 dev->types[4] = _DRM_STAT_LOCKS; 499 dev->types[5] = _DRM_STAT_UNLOCKS; 500 501 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) 502 atomic_set(&dev->counts[i], 0); 503 504 INIT_LIST_HEAD(&dev->vblank_event_list); 505 506 if (drm_core_has_AGP(dev)) { 507 if (drm_device_is_agp(dev)) 508 dev->agp = drm_agp_init(); 509 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && 510 dev->agp == NULL) { 511 DRM_ERROR("Card isn't AGP, or couldn't initialize " 512 "AGP.\n"); 513 retcode = ENOMEM; 514 goto error; 515 } 516 if (dev->agp != NULL && dev->agp->agp_info.ai_aperture_base != 0) { 517 if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base, 518 dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0) 519 dev->agp->agp_mtrr = 1; 520 } 521 } 522 523 retcode = drm_ctxbitmap_init(dev); 524 if (retcode != 0) { 525 DRM_ERROR("Cannot allocate memory for context bitmap.\n"); 526 goto error; 527 } 528 529 if (dev->driver->driver_features & DRIVER_GEM) { 530 retcode = drm_gem_init(dev); 531 if (retcode != 0) { 532 DRM_ERROR("Cannot initialize graphics execution " 533 "manager (GEM)\n"); 534 goto error1; 535 } 536 } 537 538 if (dev->driver->load != NULL) { 539 DRM_LOCK(dev); 540 /* Shared code returns -errno. */ 541 retcode = -dev->driver->load(dev, 542 dev->id_entry->driver_private); 543 if (pci_enable_busmaster(dev->dev)) 544 DRM_ERROR("Request to enable bus-master failed.\n"); 545 DRM_UNLOCK(dev); 546 if (retcode != 0) 547 goto error1; 548 } 549 550 DRM_INFO("Initialized %s %d.%d.%d %s\n", 551 dev->driver->name, 552 dev->driver->major, 553 dev->driver->minor, 554 dev->driver->patchlevel, 555 dev->driver->date); 556 557 return 0; 558 559 error1: 560 drm_gem_destroy(dev); 561 error: 562 drm_ctxbitmap_cleanup(dev); 563 drm_sysctl_cleanup(dev); 564 DRM_LOCK(dev); 565 drm_lastclose(dev); 566 DRM_UNLOCK(dev); 567 if (dev->devnode != NULL) 568 destroy_dev(dev->devnode); 569 570 lockuninit(&dev->vbl_lock); 571 lockuninit(&dev->dev_lock); 572 lockuninit(&dev->event_lock); 573 lockuninit(&dev->struct_mutex); 574 575 return retcode; 576 } 577 578 /** 579 * Get version information 580 * 581 * \param inode device inode. 582 * \param filp file pointer. 583 * \param cmd command. 584 * \param arg user argument, pointing to a drm_version structure. 585 * \return zero on success or negative number on failure. 586 * 587 * Fills in the version information in \p arg. 588 */ 589 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) 590 { 591 struct drm_version *version = data; 592 int len; 593 594 #define DRM_COPY( name, value ) \ 595 len = strlen( value ); \ 596 if ( len > name##_len ) len = name##_len; \ 597 name##_len = strlen( value ); \ 598 if ( len && name ) { \ 599 if ( DRM_COPY_TO_USER( name, value, len ) ) \ 600 return EFAULT; \ 601 } 602 603 version->version_major = dev->driver->major; 604 version->version_minor = dev->driver->minor; 605 version->version_patchlevel = dev->driver->patchlevel; 606 607 DRM_COPY(version->name, dev->driver->name); 608 DRM_COPY(version->date, dev->driver->date); 609 DRM_COPY(version->desc, dev->driver->desc); 610 611 return 0; 612 } 613 614 /* 615 * Stub is needed for devfs 616 */ 617 int drm_close(struct dev_close_args *ap) 618 { 619 return 0; 620 } 621 622 void drm_cdevpriv_dtor(void *cd) 623 { 624 struct drm_file *file_priv = cd; 625 struct drm_device *dev = file_priv->dev; 626 int retcode = 0; 627 628 DRM_DEBUG("open_count = %d\n", dev->open_count); 629 630 DRM_LOCK(dev); 631 632 if (dev->driver->preclose != NULL) 633 dev->driver->preclose(dev, file_priv); 634 635 /* ======================================================== 636 * Begin inline drm_release 637 */ 638 639 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", 640 DRM_CURRENTPID, (long)dev->dev, dev->open_count); 641 642 if (dev->driver->driver_features & DRIVER_GEM) 643 drm_gem_release(dev, file_priv); 644 645 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) 646 && dev->lock.file_priv == file_priv) { 647 DRM_DEBUG("Process %d dead, freeing lock for context %d\n", 648 DRM_CURRENTPID, 649 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 650 if (dev->driver->reclaim_buffers_locked != NULL) 651 dev->driver->reclaim_buffers_locked(dev, file_priv); 652 653 drm_lock_free(&dev->lock, 654 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); 655 656 /* FIXME: may require heavy-handed reset of 657 hardware at this point, possibly 658 processed via a callback to the X 659 server. */ 660 } else if (dev->driver->reclaim_buffers_locked != NULL && 661 dev->lock.hw_lock != NULL) { 662 /* The lock is required to reclaim buffers */ 663 for (;;) { 664 if (!dev->lock.hw_lock) { 665 /* Device has been unregistered */ 666 retcode = EINTR; 667 break; 668 } 669 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { 670 dev->lock.file_priv = file_priv; 671 dev->lock.lock_time = jiffies; 672 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); 673 break; /* Got lock */ 674 } 675 /* Contention */ 676 retcode = DRM_LOCK_SLEEP(dev, &dev->lock.lock_queue, 677 PCATCH, "drmlk2", 0); 678 if (retcode) 679 break; 680 } 681 if (retcode == 0) { 682 dev->driver->reclaim_buffers_locked(dev, file_priv); 683 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); 684 } 685 } 686 687 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && 688 !dev->driver->reclaim_buffers_locked) 689 drm_reclaim_buffers(dev, file_priv); 690 691 funsetown(&dev->buf_sigio); 692 693 if (dev->driver->postclose != NULL) 694 dev->driver->postclose(dev, file_priv); 695 list_del(&file_priv->lhead); 696 697 698 /* ======================================================== 699 * End inline drm_release 700 */ 701 702 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); 703 device_unbusy(dev->dev); 704 if (--dev->open_count == 0) { 705 retcode = drm_lastclose(dev); 706 } 707 708 DRM_UNLOCK(dev); 709 } 710 711 /** 712 * Called whenever a process performs an ioctl on /dev/drm. 713 * 714 * \param inode device inode. 715 * \param file_priv DRM file private. 716 * \param cmd command. 717 * \param arg user argument. 718 * \return zero on success or negative number on failure. 719 * 720 * Looks up the ioctl function in the ::ioctls table, checking for root 721 * previleges if so required, and dispatches to the respective function. 722 */ 723 int drm_ioctl(struct dev_ioctl_args *ap) 724 { 725 struct cdev *kdev = ap->a_head.a_dev; 726 struct drm_device *dev; 727 struct drm_ioctl_desc *ioctl = NULL; 728 u_long cmd = ap->a_cmd; 729 unsigned int nr = DRM_IOCTL_NR(cmd); 730 int retcode = 0; 731 caddr_t data = ap->a_data; 732 struct thread *p = curthread; 733 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); 734 int is_driver_ioctl = 0; 735 struct drm_file *file_priv; 736 737 dev = drm_get_device_from_kdev(kdev); 738 739 retcode = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv); 740 if (retcode !=0) { 741 DRM_ERROR("can't find authenticator\n"); 742 return EINVAL; 743 } 744 745 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); 746 747 if (drm_device_is_unplugged(dev)) 748 return -ENODEV; 749 750 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { 751 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); 752 return EINVAL; 753 } 754 755 ioctl = &drm_ioctls[nr]; 756 /* It's not a core DRM ioctl, try driver-specific. */ 757 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { 758 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ 759 nr -= DRM_COMMAND_BASE; 760 if (nr > dev->driver->num_ioctls) { 761 return EINVAL; 762 } 763 ioctl = &dev->driver->ioctls[nr]; 764 is_driver_ioctl = 1; 765 } 766 767 DRM_DEBUG_VERBOSE("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", 768 DRM_CURRENTPID, cmd, nr, (long)dev->dev, 769 file_priv->authenticated); 770 771 /* Do not trust userspace, use our own definition */ 772 func = ioctl->func; 773 774 if (func == NULL) { 775 DRM_DEBUG("no function\n"); 776 return EINVAL; 777 } 778 779 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || 780 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || 781 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) 782 return EACCES; 783 784 if (is_driver_ioctl) { 785 if ((ioctl->flags & DRM_UNLOCKED) == 0) 786 mutex_lock(&drm_global_mutex); 787 /* shared code returns -errno */ 788 retcode = -func(dev, data, file_priv); 789 if ((ioctl->flags & DRM_UNLOCKED) == 0) 790 mutex_unlock(&drm_global_mutex); 791 } else { 792 retcode = func(dev, data, file_priv); 793 } 794 795 if (!ioctl) 796 DRM_DEBUG("invalid ioctl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02lx, nr=0x%02x\n", 797 DRM_CURRENTPID, 798 (long)dev->dev, 799 file_priv->authenticated, cmd, nr); 800 801 if (retcode) 802 DRM_DEBUG("ret = %d\n", retcode); 803 return retcode; 804 } 805 806 drm_local_map_t *drm_getsarea(struct drm_device *dev) 807 { 808 struct drm_map_list *entry; 809 810 list_for_each_entry(entry, &dev->maplist, head) { 811 if (entry->map && entry->map->type == _DRM_SHM && 812 (entry->map->flags & _DRM_CONTAINS_LOCK)) { 813 return entry->map; 814 } 815 } 816 817 return NULL; 818 } 819 820 int 821 drm_add_busid_modesetting(struct drm_device *dev, struct sysctl_ctx_list *ctx, 822 struct sysctl_oid *top) 823 { 824 struct sysctl_oid *oid; 825 826 ksnprintf(dev->busid_str, sizeof(dev->busid_str), 827 "pci:%04x:%02x:%02x.%d", dev->pci_domain, dev->pci_bus, 828 dev->pci_slot, dev->pci_func); 829 oid = SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(top), OID_AUTO, "busid", 830 CTLFLAG_RD, dev->busid_str, 0, NULL); 831 if (oid == NULL) 832 return (ENOMEM); 833 dev->modesetting = (dev->driver->driver_features & DRIVER_MODESET) != 0; 834 oid = SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(top), OID_AUTO, 835 "modesetting", CTLFLAG_RD, &dev->modesetting, 0, NULL); 836 if (oid == NULL) 837 return (ENOMEM); 838 839 return (0); 840 } 841 842 int 843 drm_mmap_single(struct dev_mmap_single_args *ap) 844 { 845 struct drm_device *dev; 846 struct cdev *kdev = ap->a_head.a_dev; 847 vm_ooffset_t *offset = ap->a_offset; 848 vm_size_t size = ap->a_size; 849 struct vm_object **obj_res = ap->a_object; 850 int nprot = ap->a_nprot; 851 852 dev = drm_get_device_from_kdev(kdev); 853 if (dev->drm_ttm_bdev != NULL) { 854 return (ttm_bo_mmap_single(dev->drm_ttm_bdev, offset, size, 855 obj_res, nprot)); 856 } else if ((dev->driver->driver_features & DRIVER_GEM) != 0) { 857 return (drm_gem_mmap_single(dev, offset, size, obj_res, nprot)); 858 } else { 859 return (ENODEV); 860 } 861 } 862 863 #if DRM_LINUX 864 865 #include <sys/sysproto.h> 866 867 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); 868 869 #define LINUX_IOCTL_DRM_MIN 0x6400 870 #define LINUX_IOCTL_DRM_MAX 0x64ff 871 872 static linux_ioctl_function_t drm_linux_ioctl; 873 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, 874 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; 875 876 /* The bits for in/out are switched on Linux */ 877 #define LINUX_IOC_IN IOC_OUT 878 #define LINUX_IOC_OUT IOC_IN 879 880 static int 881 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) 882 { 883 int error; 884 int cmd = args->cmd; 885 886 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); 887 if (cmd & LINUX_IOC_IN) 888 args->cmd |= IOC_IN; 889 if (cmd & LINUX_IOC_OUT) 890 args->cmd |= IOC_OUT; 891 892 error = ioctl(p, (struct ioctl_args *)args); 893 894 return error; 895 } 896 #endif /* DRM_LINUX */ 897 898 static int 899 drm_core_init(void *arg) 900 { 901 902 drm_global_init(); 903 904 #if DRM_LINUX 905 linux_ioctl_register_handler(&drm_handler); 906 #endif /* DRM_LINUX */ 907 908 DRM_INFO("Initialized %s %d.%d.%d %s\n", 909 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 910 return 0; 911 } 912 913 static void 914 drm_core_exit(void *arg) 915 { 916 917 #if DRM_LINUX 918 linux_ioctl_unregister_handler(&drm_handler); 919 #endif /* DRM_LINUX */ 920 921 drm_global_release(); 922 } 923 924 SYSINIT(drm_register, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 925 drm_core_init, NULL); 926 SYSUNINIT(drm_unregister, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, 927 drm_core_exit, NULL); 928 929 /* 930 * Check if dmi_system_id structure matches system DMI data 931 */ 932 static bool 933 dmi_found(const struct dmi_system_id *dsi) 934 { 935 int i, slot; 936 bool found = false; 937 char *sys_vendor, *board_vendor, *product_name, *board_name; 938 939 sys_vendor = kgetenv("smbios.system.maker"); 940 board_vendor = kgetenv("smbios.planar.maker"); 941 product_name = kgetenv("smbios.system.product"); 942 board_name = kgetenv("smbios.planar.product"); 943 944 for (i = 0; i < NELEM(dsi->matches); i++) { 945 slot = dsi->matches[i].slot; 946 switch (slot) { 947 case DMI_NONE: 948 break; 949 case DMI_SYS_VENDOR: 950 if (sys_vendor != NULL && 951 !strcmp(sys_vendor, dsi->matches[i].substr)) 952 break; 953 else 954 goto done; 955 case DMI_BOARD_VENDOR: 956 if (board_vendor != NULL && 957 !strcmp(board_vendor, dsi->matches[i].substr)) 958 break; 959 else 960 goto done; 961 case DMI_PRODUCT_NAME: 962 if (product_name != NULL && 963 !strcmp(product_name, dsi->matches[i].substr)) 964 break; 965 else 966 goto done; 967 case DMI_BOARD_NAME: 968 if (board_name != NULL && 969 !strcmp(board_name, dsi->matches[i].substr)) 970 break; 971 else 972 goto done; 973 default: 974 goto done; 975 } 976 } 977 found = true; 978 979 done: 980 if (sys_vendor != NULL) 981 kfreeenv(sys_vendor); 982 if (board_vendor != NULL) 983 kfreeenv(board_vendor); 984 if (product_name != NULL) 985 kfreeenv(product_name); 986 if (board_name != NULL) 987 kfreeenv(board_name); 988 989 return found; 990 } 991 992 bool 993 dmi_check_system(const struct dmi_system_id *sysid) 994 { 995 const struct dmi_system_id *dsi; 996 int num = 0; 997 998 for (dsi = sysid; dsi->matches[0].slot != 0 ; dsi++) { 999 if (dmi_found(dsi)) { 1000 num++; 1001 if (dsi->callback && dsi->callback(dsi)) 1002 break; 1003 } 1004 } 1005 return (num); 1006 } 1007