| 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 | */ |
| 30 | |
| 31 | /** @file drm_drv.c |
| 32 | * The catch-all file for DRM device support, including module setup/teardown, |
| 33 | * open/close, and ioctl dispatch. |
| 34 | */ |
| 35 | |
| 36 | #include <machine/limits.h> |
| 37 | #include "dev/drm/drmP.h" |
| 38 | #include "dev/drm/drm.h" |
| 39 | #include "dev/drm/drm_sarea.h" |
| 40 | |
| 41 | #ifdef DRM_DEBUG_DEFAULT_ON |
| 42 | int drm_debug_flag = 1; |
| 43 | #else |
| 44 | int drm_debug_flag = 0; |
| 45 | #endif |
| 46 | |
| 47 | static int drm_load(struct drm_device *dev); |
| 48 | static void drm_unload(struct drm_device *dev); |
| 49 | static drm_pci_id_list_t *drm_find_description(int vendor, int device, |
| 50 | drm_pci_id_list_t *idlist); |
| 51 | |
| 52 | #define DRIVER_SOFTC(unit) \ |
| 53 | ((struct drm_device *)devclass_get_softc(drm_devclass, unit)) |
| 54 | |
| 55 | MODULE_VERSION(drm, 1); |
| 56 | MODULE_DEPEND(drm, agp, 1, 1, 1); |
| 57 | MODULE_DEPEND(drm, pci, 1, 1, 1); |
| 58 | MODULE_DEPEND(drm, mem, 1, 1, 1); |
| 59 | |
| 60 | static drm_ioctl_desc_t drm_ioctls[256] = { |
| 61 | DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0), |
| 62 | DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0), |
| 63 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0), |
| 64 | DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY), |
| 65 | DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0), |
| 66 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0), |
| 67 | DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0), |
| 68 | DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY), |
| 69 | |
| 70 | DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 71 | DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 72 | DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 73 | DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 74 | |
| 75 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 76 | DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH), |
| 77 | |
| 78 | DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 79 | DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH), |
| 80 | |
| 81 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY), |
| 82 | DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 83 | DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 84 | DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH), |
| 85 | DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 86 | DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 87 | DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH), |
| 88 | |
| 89 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 90 | DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 91 | |
| 92 | DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH), |
| 93 | DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH), |
| 94 | |
| 95 | DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH), |
| 96 | |
| 97 | DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 98 | DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 99 | DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH), |
| 100 | DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH), |
| 101 | DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH), |
| 102 | DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH), |
| 103 | |
| 104 | DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 105 | |
| 106 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 107 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 108 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 109 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH), |
| 110 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 111 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 112 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 113 | DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 114 | |
| 115 | DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 116 | DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 117 | DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0), |
| 118 | DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0), |
| 119 | DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), |
| 120 | }; |
| 121 | |
| 122 | static struct dev_ops drm_cdevsw = { |
| 123 | { "drm", 145, D_TRACKCLOSE }, |
| 124 | .d_open = drm_open, |
| 125 | .d_close = drm_close, |
| 126 | .d_read = drm_read, |
| 127 | .d_ioctl = drm_ioctl, |
| 128 | .d_poll = drm_poll, |
| 129 | .d_mmap = drm_mmap |
| 130 | }; |
| 131 | |
| 132 | static int drm_msi = 1; /* Enable by default. */ |
| 133 | TUNABLE_INT("hw.drm.msi", &drm_msi); |
| 134 | |
| 135 | static struct drm_msi_blacklist_entry drm_msi_blacklist[] = { |
| 136 | {0x8086, 0x2772}, /* Intel i945G */ \ |
| 137 | {0x8086, 0x27A2}, /* Intel i945GM */ \ |
| 138 | {0x8086, 0x27AE}, /* Intel i945GME */ \ |
| 139 | {0, 0} |
| 140 | }; |
| 141 | |
| 142 | static int drm_msi_is_blacklisted(int vendor, int device) |
| 143 | { |
| 144 | int i = 0; |
| 145 | |
| 146 | for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) { |
| 147 | if ((drm_msi_blacklist[i].vendor == vendor) && |
| 148 | (drm_msi_blacklist[i].device == device)) { |
| 149 | return 1; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | int drm_probe(device_t kdev, drm_pci_id_list_t *idlist) |
| 157 | { |
| 158 | drm_pci_id_list_t *id_entry; |
| 159 | int vendor, device; |
| 160 | |
| 161 | vendor = pci_get_vendor(kdev); |
| 162 | device = pci_get_device(kdev); |
| 163 | |
| 164 | if (pci_get_class(kdev) != PCIC_DISPLAY |
| 165 | || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA) |
| 166 | return ENXIO; |
| 167 | |
| 168 | id_entry = drm_find_description(vendor, device, idlist); |
| 169 | if (id_entry != NULL) { |
| 170 | if (!device_get_desc(kdev)) { |
| 171 | DRM_DEBUG("desc : %s\n", device_get_desc(kdev)); |
| 172 | device_set_desc(kdev, id_entry->name); |
| 173 | } |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | return ENXIO; |
| 178 | } |
| 179 | |
| 180 | int drm_attach(device_t kdev, drm_pci_id_list_t *idlist) |
| 181 | { |
| 182 | struct drm_device *dev; |
| 183 | drm_pci_id_list_t *id_entry; |
| 184 | int unit; |
| 185 | #if 0 |
| 186 | int msicount; |
| 187 | #endif |
| 188 | |
| 189 | unit = device_get_unit(kdev); |
| 190 | dev = device_get_softc(kdev); |
| 191 | |
| 192 | if (!strcmp(device_get_name(kdev), "drmsub")) |
| 193 | dev->device = device_get_parent(kdev); |
| 194 | else |
| 195 | dev->device = kdev; |
| 196 | |
| 197 | dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID, |
| 198 | DRM_DEV_MODE, "dri/card%d", unit); |
| 199 | |
| 200 | dev->pci_domain = 0; |
| 201 | dev->pci_bus = pci_get_bus(dev->device); |
| 202 | dev->pci_slot = pci_get_slot(dev->device); |
| 203 | dev->pci_func = pci_get_function(dev->device); |
| 204 | |
| 205 | dev->pci_vendor = pci_get_vendor(dev->device); |
| 206 | dev->pci_device = pci_get_device(dev->device); |
| 207 | |
| 208 | if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) { |
| 209 | if (drm_msi && |
| 210 | !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) { |
| 211 | #if 0 |
| 212 | msicount = pci_msi_count(dev->device); |
| 213 | DRM_DEBUG("MSI count = %d\n", msicount); |
| 214 | if (msicount > 1) |
| 215 | msicount = 1; |
| 216 | |
| 217 | if (pci_alloc_msi(dev->device, &msicount) == 0) { |
| 218 | DRM_INFO("MSI enabled %d message(s)\n", |
| 219 | msicount); |
| 220 | dev->msi_enabled = 1; |
| 221 | dev->irqrid = 1; |
| 222 | } |
| 223 | #endif |
| 224 | } |
| 225 | |
| 226 | dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, |
| 227 | &dev->irqrid, RF_SHAREABLE); |
| 228 | if (!dev->irqr) { |
| 229 | return ENOENT; |
| 230 | } |
| 231 | |
| 232 | dev->irq = (int) rman_get_start(dev->irqr); |
| 233 | } |
| 234 | |
| 235 | DRM_SPININIT(&dev->dev_lock, "drmdev"); |
| 236 | lwkt_serialize_init(&dev->irq_lock); |
| 237 | DRM_SPININIT(&dev->vbl_lock, "drmvbl"); |
| 238 | DRM_SPININIT(&dev->drw_lock, "drmdrw"); |
| 239 | |
| 240 | id_entry = drm_find_description(dev->pci_vendor, |
| 241 | dev->pci_device, idlist); |
| 242 | dev->id_entry = id_entry; |
| 243 | |
| 244 | return drm_load(dev); |
| 245 | } |
| 246 | |
| 247 | int drm_detach(device_t kdev) |
| 248 | { |
| 249 | struct drm_device *dev; |
| 250 | |
| 251 | dev = device_get_softc(kdev); |
| 252 | |
| 253 | drm_unload(dev); |
| 254 | |
| 255 | if (dev->irqr) { |
| 256 | bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, |
| 257 | dev->irqr); |
| 258 | |
| 259 | #if 0 |
| 260 | if (dev->msi_enabled) { |
| 261 | pci_release_msi(dev->device); |
| 262 | DRM_INFO("MSI released\n"); |
| 263 | } |
| 264 | #endif |
| 265 | } |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | #ifndef DRM_DEV_NAME |
| 271 | #define DRM_DEV_NAME "drm" |
| 272 | #endif |
| 273 | |
| 274 | devclass_t drm_devclass; |
| 275 | |
| 276 | drm_pci_id_list_t *drm_find_description(int vendor, int device, |
| 277 | drm_pci_id_list_t *idlist) |
| 278 | { |
| 279 | int i = 0; |
| 280 | |
| 281 | for (i = 0; idlist[i].vendor != 0; i++) { |
| 282 | if ((idlist[i].vendor == vendor) && |
| 283 | ((idlist[i].device == device) || |
| 284 | (idlist[i].device == 0))) { |
| 285 | return &idlist[i]; |
| 286 | } |
| 287 | } |
| 288 | return NULL; |
| 289 | } |
| 290 | |
| 291 | static int drm_firstopen(struct drm_device *dev) |
| 292 | { |
| 293 | drm_local_map_t *map; |
| 294 | int i; |
| 295 | |
| 296 | DRM_SPINLOCK_ASSERT(&dev->dev_lock); |
| 297 | |
| 298 | /* prebuild the SAREA */ |
| 299 | i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM, |
| 300 | _DRM_CONTAINS_LOCK, &map); |
| 301 | if (i != 0) |
| 302 | return i; |
| 303 | |
| 304 | if (dev->driver->firstopen) |
| 305 | dev->driver->firstopen(dev); |
| 306 | |
| 307 | dev->buf_use = 0; |
| 308 | |
| 309 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { |
| 310 | i = drm_dma_setup(dev); |
| 311 | if (i != 0) |
| 312 | return i; |
| 313 | } |
| 314 | |
| 315 | for (i = 0; i < DRM_HASH_SIZE; i++) { |
| 316 | dev->magiclist[i].head = NULL; |
| 317 | dev->magiclist[i].tail = NULL; |
| 318 | } |
| 319 | |
| 320 | dev->lock.lock_queue = 0; |
| 321 | dev->irq_enabled = 0; |
| 322 | dev->context_flag = 0; |
| 323 | dev->last_context = 0; |
| 324 | dev->if_version = 0; |
| 325 | |
| 326 | dev->buf_sigio = NULL; |
| 327 | |
| 328 | DRM_DEBUG("\n"); |
| 329 | |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | static int drm_lastclose(struct drm_device *dev) |
| 334 | { |
| 335 | drm_magic_entry_t *pt, *next; |
| 336 | drm_local_map_t *map, *mapsave; |
| 337 | int i; |
| 338 | |
| 339 | DRM_SPINLOCK_ASSERT(&dev->dev_lock); |
| 340 | |
| 341 | DRM_DEBUG("\n"); |
| 342 | |
| 343 | if (dev->driver->lastclose != NULL) |
| 344 | dev->driver->lastclose(dev); |
| 345 | |
| 346 | if (dev->irq_enabled) |
| 347 | drm_irq_uninstall(dev); |
| 348 | |
| 349 | if (dev->unique) { |
| 350 | free(dev->unique, DRM_MEM_DRIVER); |
| 351 | dev->unique = NULL; |
| 352 | dev->unique_len = 0; |
| 353 | } |
| 354 | /* Clear pid list */ |
| 355 | for (i = 0; i < DRM_HASH_SIZE; i++) { |
| 356 | for (pt = dev->magiclist[i].head; pt; pt = next) { |
| 357 | next = pt->next; |
| 358 | free(pt, DRM_MEM_MAGIC); |
| 359 | } |
| 360 | dev->magiclist[i].head = dev->magiclist[i].tail = NULL; |
| 361 | } |
| 362 | |
| 363 | DRM_UNLOCK(); |
| 364 | drm_drawable_free_all(dev); |
| 365 | DRM_LOCK(); |
| 366 | |
| 367 | /* Clear AGP information */ |
| 368 | if (dev->agp) { |
| 369 | drm_agp_mem_t *entry; |
| 370 | drm_agp_mem_t *nexte; |
| 371 | |
| 372 | /* Remove AGP resources, but leave dev->agp intact until |
| 373 | * drm_unload is called. |
| 374 | */ |
| 375 | for (entry = dev->agp->memory; entry; entry = nexte) { |
| 376 | nexte = entry->next; |
| 377 | if (entry->bound) |
| 378 | drm_agp_unbind_memory(entry->handle); |
| 379 | drm_agp_free_memory(entry->handle); |
| 380 | free(entry, DRM_MEM_AGPLISTS); |
| 381 | } |
| 382 | dev->agp->memory = NULL; |
| 383 | |
| 384 | if (dev->agp->acquired) |
| 385 | drm_agp_release(dev); |
| 386 | |
| 387 | dev->agp->acquired = 0; |
| 388 | dev->agp->enabled = 0; |
| 389 | } |
| 390 | if (dev->sg != NULL) { |
| 391 | drm_sg_cleanup(dev->sg); |
| 392 | dev->sg = NULL; |
| 393 | } |
| 394 | |
| 395 | TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) { |
| 396 | if (!(map->flags & _DRM_DRIVER)) |
| 397 | drm_rmmap(dev, map); |
| 398 | } |
| 399 | |
| 400 | drm_dma_takedown(dev); |
| 401 | if (dev->lock.hw_lock) { |
| 402 | dev->lock.hw_lock = NULL; /* SHM removed */ |
| 403 | dev->lock.file_priv = NULL; |
| 404 | DRM_WAKEUP_INT((void *)&dev->lock.lock_queue); |
| 405 | } |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static int drm_load(struct drm_device *dev) |
| 411 | { |
| 412 | int i, retcode; |
| 413 | |
| 414 | DRM_DEBUG("\n"); |
| 415 | |
| 416 | TAILQ_INIT(&dev->maplist); |
| 417 | |
| 418 | drm_mem_init(); |
| 419 | drm_sysctl_init(dev); |
| 420 | TAILQ_INIT(&dev->files); |
| 421 | |
| 422 | dev->counters = 6; |
| 423 | dev->types[0] = _DRM_STAT_LOCK; |
| 424 | dev->types[1] = _DRM_STAT_OPENS; |
| 425 | dev->types[2] = _DRM_STAT_CLOSES; |
| 426 | dev->types[3] = _DRM_STAT_IOCTLS; |
| 427 | dev->types[4] = _DRM_STAT_LOCKS; |
| 428 | dev->types[5] = _DRM_STAT_UNLOCKS; |
| 429 | |
| 430 | for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++) |
| 431 | atomic_set(&dev->counts[i], 0); |
| 432 | |
| 433 | if (dev->driver->load != NULL) { |
| 434 | DRM_LOCK(); |
| 435 | /* Shared code returns -errno. */ |
| 436 | retcode = -dev->driver->load(dev, |
| 437 | dev->id_entry->driver_private); |
| 438 | pci_enable_busmaster(dev->device); |
| 439 | DRM_UNLOCK(); |
| 440 | if (retcode != 0) |
| 441 | goto error; |
| 442 | } |
| 443 | |
| 444 | if (drm_core_has_AGP(dev)) { |
| 445 | if (drm_device_is_agp(dev)) |
| 446 | dev->agp = drm_agp_init(); |
| 447 | if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && |
| 448 | dev->agp == NULL) { |
| 449 | DRM_ERROR("Card isn't AGP, or couldn't initialize " |
| 450 | "AGP.\n"); |
| 451 | retcode = ENOMEM; |
| 452 | goto error; |
| 453 | } |
| 454 | if (dev->agp != NULL) { |
| 455 | if (drm_mtrr_add(dev->agp->info.ai_aperture_base, |
| 456 | dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0) |
| 457 | dev->agp->mtrr = 1; |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | retcode = drm_ctxbitmap_init(dev); |
| 462 | if (retcode != 0) { |
| 463 | DRM_ERROR("Cannot allocate memory for context bitmap.\n"); |
| 464 | goto error; |
| 465 | } |
| 466 | |
| 467 | DRM_INFO("Initialized %s %d.%d.%d %s\n", |
| 468 | dev->driver->name, |
| 469 | dev->driver->major, |
| 470 | dev->driver->minor, |
| 471 | dev->driver->patchlevel, |
| 472 | dev->driver->date); |
| 473 | |
| 474 | return 0; |
| 475 | |
| 476 | error: |
| 477 | drm_sysctl_cleanup(dev); |
| 478 | DRM_LOCK(); |
| 479 | drm_lastclose(dev); |
| 480 | DRM_UNLOCK(); |
| 481 | destroy_dev(dev->devnode); |
| 482 | |
| 483 | DRM_SPINUNINIT(&dev->drw_lock); |
| 484 | DRM_SPINUNINIT(&dev->vbl_lock); |
| 485 | DRM_SPINUNINIT(&dev->dev_lock); |
| 486 | |
| 487 | return retcode; |
| 488 | } |
| 489 | |
| 490 | static void drm_unload(struct drm_device *dev) |
| 491 | { |
| 492 | int i; |
| 493 | |
| 494 | DRM_DEBUG("\n"); |
| 495 | |
| 496 | drm_sysctl_cleanup(dev); |
| 497 | destroy_dev(dev->devnode); |
| 498 | |
| 499 | drm_ctxbitmap_cleanup(dev); |
| 500 | |
| 501 | if (dev->agp && dev->agp->mtrr) { |
| 502 | int __unused retcode; |
| 503 | |
| 504 | retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base, |
| 505 | dev->agp->info.ai_aperture_size, DRM_MTRR_WC); |
| 506 | DRM_DEBUG("mtrr_del = %d", retcode); |
| 507 | } |
| 508 | |
| 509 | drm_vblank_cleanup(dev); |
| 510 | |
| 511 | DRM_LOCK(); |
| 512 | drm_lastclose(dev); |
| 513 | DRM_UNLOCK(); |
| 514 | |
| 515 | /* Clean up PCI resources allocated by drm_bufs.c. We're not really |
| 516 | * worried about resource consumption while the DRM is inactive (between |
| 517 | * lastclose and firstopen or unload) because these aren't actually |
| 518 | * taking up KVA, just keeping the PCI resource allocated. |
| 519 | */ |
| 520 | for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) { |
| 521 | if (dev->pcir[i] == NULL) |
| 522 | continue; |
| 523 | bus_release_resource(dev->device, SYS_RES_MEMORY, |
| 524 | dev->pcirid[i], dev->pcir[i]); |
| 525 | dev->pcir[i] = NULL; |
| 526 | } |
| 527 | |
| 528 | if (dev->agp) { |
| 529 | free(dev->agp, DRM_MEM_AGPLISTS); |
| 530 | dev->agp = NULL; |
| 531 | } |
| 532 | |
| 533 | if (dev->driver->unload != NULL) { |
| 534 | DRM_LOCK(); |
| 535 | dev->driver->unload(dev); |
| 536 | DRM_UNLOCK(); |
| 537 | } |
| 538 | |
| 539 | drm_mem_uninit(); |
| 540 | |
| 541 | pci_disable_busmaster(dev->device); |
| 542 | |
| 543 | DRM_SPINUNINIT(&dev->drw_lock); |
| 544 | DRM_SPINUNINIT(&dev->vbl_lock); |
| 545 | DRM_SPINUNINIT(&dev->dev_lock); |
| 546 | } |
| 547 | |
| 548 | int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| 549 | { |
| 550 | struct drm_version *version = data; |
| 551 | int len; |
| 552 | |
| 553 | #define DRM_COPY( name, value ) \ |
| 554 | len = strlen( value ); \ |
| 555 | if ( len > name##_len ) len = name##_len; \ |
| 556 | name##_len = strlen( value ); \ |
| 557 | if ( len && name ) { \ |
| 558 | if ( DRM_COPY_TO_USER( name, value, len ) ) \ |
| 559 | return EFAULT; \ |
| 560 | } |
| 561 | |
| 562 | version->version_major = dev->driver->major; |
| 563 | version->version_minor = dev->driver->minor; |
| 564 | version->version_patchlevel = dev->driver->patchlevel; |
| 565 | |
| 566 | DRM_COPY(version->name, dev->driver->name); |
| 567 | DRM_COPY(version->date, dev->driver->date); |
| 568 | DRM_COPY(version->desc, dev->driver->desc); |
| 569 | |
| 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | int drm_open(struct dev_open_args *ap) |
| 574 | { |
| 575 | struct cdev *kdev = ap->a_head.a_dev; |
| 576 | int flags = ap->a_oflags; |
| 577 | int fmt = 0; |
| 578 | struct thread *p = curthread; |
| 579 | struct drm_device *dev = NULL; |
| 580 | int retcode = 0; |
| 581 | |
| 582 | dev = DRIVER_SOFTC(minor(kdev)); |
| 583 | |
| 584 | DRM_DEBUG("open_count = %d\n", dev->open_count); |
| 585 | |
| 586 | retcode = drm_open_helper(kdev, flags, fmt, p, dev); |
| 587 | |
| 588 | if (!retcode) { |
| 589 | atomic_inc(&dev->counts[_DRM_STAT_OPENS]); |
| 590 | DRM_LOCK(); |
| 591 | device_busy(dev->device); |
| 592 | if (!dev->open_count++) |
| 593 | retcode = drm_firstopen(dev); |
| 594 | DRM_UNLOCK(); |
| 595 | } |
| 596 | |
| 597 | return retcode; |
| 598 | } |
| 599 | |
| 600 | int drm_close(struct dev_close_args *ap) |
| 601 | { |
| 602 | struct cdev *kdev = ap->a_head.a_dev; |
| 603 | struct drm_file *file_priv; |
| 604 | struct drm_device *dev; |
| 605 | int retcode = 0; |
| 606 | |
| 607 | dev = DRIVER_SOFTC(minor(kdev)); |
| 608 | file_priv = drm_find_file_by_proc(dev, curthread); |
| 609 | |
| 610 | DRM_DEBUG("open_count = %d\n", dev->open_count); |
| 611 | |
| 612 | DRM_LOCK(); |
| 613 | |
| 614 | if (--file_priv->refs != 0) |
| 615 | goto done; |
| 616 | |
| 617 | if (dev->driver->preclose != NULL) |
| 618 | dev->driver->preclose(dev, file_priv); |
| 619 | |
| 620 | /* ======================================================== |
| 621 | * Begin inline drm_release |
| 622 | */ |
| 623 | |
| 624 | DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n", |
| 625 | DRM_CURRENTPID, (long)dev->device, dev->open_count); |
| 626 | |
| 627 | if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) |
| 628 | && dev->lock.file_priv == file_priv) { |
| 629 | DRM_DEBUG("Process %d dead, freeing lock for context %d\n", |
| 630 | DRM_CURRENTPID, |
| 631 | _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); |
| 632 | if (dev->driver->reclaim_buffers_locked != NULL) |
| 633 | dev->driver->reclaim_buffers_locked(dev, file_priv); |
| 634 | |
| 635 | drm_lock_free(&dev->lock, |
| 636 | _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); |
| 637 | |
| 638 | /* FIXME: may require heavy-handed reset of |
| 639 | hardware at this point, possibly |
| 640 | processed via a callback to the X |
| 641 | server. */ |
| 642 | } else if (dev->driver->reclaim_buffers_locked != NULL && |
| 643 | dev->lock.hw_lock != NULL) { |
| 644 | /* The lock is required to reclaim buffers */ |
| 645 | for (;;) { |
| 646 | if (!dev->lock.hw_lock) { |
| 647 | /* Device has been unregistered */ |
| 648 | retcode = EINTR; |
| 649 | break; |
| 650 | } |
| 651 | if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) { |
| 652 | dev->lock.file_priv = file_priv; |
| 653 | dev->lock.lock_time = jiffies; |
| 654 | atomic_inc(&dev->counts[_DRM_STAT_LOCKS]); |
| 655 | break; /* Got lock */ |
| 656 | } |
| 657 | /* Contention */ |
| 658 | tsleep_interlock((void *)&dev->lock.lock_queue, PCATCH); |
| 659 | DRM_UNLOCK(); |
| 660 | retcode = tsleep((void *)&dev->lock.lock_queue, |
| 661 | PCATCH | PINTERLOCKED, "drmlk2", 0); |
| 662 | DRM_LOCK(); |
| 663 | if (retcode) |
| 664 | break; |
| 665 | } |
| 666 | if (retcode == 0) { |
| 667 | dev->driver->reclaim_buffers_locked(dev, file_priv); |
| 668 | drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT); |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && |
| 673 | !dev->driver->reclaim_buffers_locked) |
| 674 | drm_reclaim_buffers(dev, file_priv); |
| 675 | |
| 676 | funsetown(dev->buf_sigio); |
| 677 | |
| 678 | if (dev->driver->postclose != NULL) |
| 679 | dev->driver->postclose(dev, file_priv); |
| 680 | TAILQ_REMOVE(&dev->files, file_priv, link); |
| 681 | free(file_priv, DRM_MEM_FILES); |
| 682 | |
| 683 | /* ======================================================== |
| 684 | * End inline drm_release |
| 685 | */ |
| 686 | done: |
| 687 | atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); |
| 688 | device_unbusy(dev->device); |
| 689 | if (--dev->open_count == 0) { |
| 690 | retcode = drm_lastclose(dev); |
| 691 | } |
| 692 | |
| 693 | DRM_UNLOCK(); |
| 694 | |
| 695 | return (0); |
| 696 | } |
| 697 | |
| 698 | /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. |
| 699 | */ |
| 700 | int drm_ioctl(struct dev_ioctl_args *ap) |
| 701 | { |
| 702 | struct cdev *kdev = ap->a_head.a_dev; |
| 703 | u_long cmd = ap->a_cmd; |
| 704 | caddr_t data = ap->a_data; |
| 705 | struct thread *p = curthread; |
| 706 | struct drm_device *dev = drm_get_device_from_kdev(kdev); |
| 707 | int retcode = 0; |
| 708 | drm_ioctl_desc_t *ioctl; |
| 709 | int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv); |
| 710 | int nr = DRM_IOCTL_NR(cmd); |
| 711 | int is_driver_ioctl = 0; |
| 712 | struct drm_file *file_priv; |
| 713 | |
| 714 | file_priv = drm_find_file_by_proc(dev, p); |
| 715 | if (!file_priv) { |
| 716 | DRM_ERROR("can't find authenticator\n"); |
| 717 | return EINVAL; |
| 718 | } |
| 719 | |
| 720 | atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]); |
| 721 | ++file_priv->ioctl_count; |
| 722 | |
| 723 | DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n", |
| 724 | DRM_CURRENTPID, cmd, nr, (long)dev->device, |
| 725 | file_priv->authenticated); |
| 726 | |
| 727 | switch (cmd) { |
| 728 | case FIONBIO: |
| 729 | case FIOASYNC: |
| 730 | return 0; |
| 731 | |
| 732 | case FIOSETOWN: |
| 733 | return fsetown(*(int *)data, &dev->buf_sigio); |
| 734 | |
| 735 | case FIOGETOWN: |
| 736 | *(int *) data = fgetown(dev->buf_sigio); |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | if (IOCGROUP(cmd) != DRM_IOCTL_BASE) { |
| 741 | DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd)); |
| 742 | return EINVAL; |
| 743 | } |
| 744 | |
| 745 | ioctl = &drm_ioctls[nr]; |
| 746 | /* It's not a core DRM ioctl, try driver-specific. */ |
| 747 | if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) { |
| 748 | /* The array entries begin at DRM_COMMAND_BASE ioctl nr */ |
| 749 | nr -= DRM_COMMAND_BASE; |
| 750 | if (nr > dev->driver->max_ioctl) { |
| 751 | DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n", |
| 752 | nr, dev->driver->max_ioctl); |
| 753 | return EINVAL; |
| 754 | } |
| 755 | ioctl = &dev->driver->ioctls[nr]; |
| 756 | is_driver_ioctl = 1; |
| 757 | } |
| 758 | func = ioctl->func; |
| 759 | |
| 760 | if (func == NULL) { |
| 761 | DRM_DEBUG("no function\n"); |
| 762 | return EINVAL; |
| 763 | } |
| 764 | |
| 765 | if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) || |
| 766 | ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) || |
| 767 | ((ioctl->flags & DRM_MASTER) && !file_priv->master)) |
| 768 | return EACCES; |
| 769 | |
| 770 | if (is_driver_ioctl) { |
| 771 | DRM_LOCK(); |
| 772 | /* shared code returns -errno */ |
| 773 | retcode = -func(dev, data, file_priv); |
| 774 | DRM_UNLOCK(); |
| 775 | } else { |
| 776 | retcode = func(dev, data, file_priv); |
| 777 | } |
| 778 | |
| 779 | if (retcode != 0) |
| 780 | DRM_DEBUG(" returning %d\n", retcode); |
| 781 | |
| 782 | return retcode; |
| 783 | } |
| 784 | |
| 785 | drm_local_map_t *drm_getsarea(struct drm_device *dev) |
| 786 | { |
| 787 | drm_local_map_t *map; |
| 788 | |
| 789 | DRM_SPINLOCK_ASSERT(&dev->dev_lock); |
| 790 | TAILQ_FOREACH(map, &dev->maplist, link) { |
| 791 | if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK)) |
| 792 | return map; |
| 793 | } |
| 794 | |
| 795 | return NULL; |
| 796 | } |
| 797 | |
| 798 | #if DRM_LINUX |
| 799 | |
| 800 | #include <sys/sysproto.h> |
| 801 | |
| 802 | MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1); |
| 803 | |
| 804 | #define LINUX_IOCTL_DRM_MIN 0x6400 |
| 805 | #define LINUX_IOCTL_DRM_MAX 0x64ff |
| 806 | |
| 807 | static linux_ioctl_function_t drm_linux_ioctl; |
| 808 | static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl, |
| 809 | LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX}; |
| 810 | |
| 811 | SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE, |
| 812 | linux_ioctl_register_handler, &drm_handler); |
| 813 | SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, |
| 814 | linux_ioctl_unregister_handler, &drm_handler); |
| 815 | |
| 816 | /* The bits for in/out are switched on Linux */ |
| 817 | #define LINUX_IOC_IN IOC_OUT |
| 818 | #define LINUX_IOC_OUT IOC_IN |
| 819 | |
| 820 | static int |
| 821 | drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args) |
| 822 | { |
| 823 | int error; |
| 824 | int cmd = args->cmd; |
| 825 | |
| 826 | args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT); |
| 827 | if (cmd & LINUX_IOC_IN) |
| 828 | args->cmd |= IOC_IN; |
| 829 | if (cmd & LINUX_IOC_OUT) |
| 830 | args->cmd |= IOC_OUT; |
| 831 | |
| 832 | error = ioctl(p, (struct ioctl_args *)args); |
| 833 | |
| 834 | return error; |
| 835 | } |
| 836 | #endif /* DRM_LINUX */ |