| 1 | /* |
| 2 | * Copyright © 2012 Red Hat. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 19 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 20 | * DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Author: Dave Airlie <airlied@redhat.com> |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * This file contains the interfaces to the bus-specific code |
| 27 | */ |
| 28 | |
| 29 | #ifdef HAVE_XORG_CONFIG_H |
| 30 | #include <xorg-config.h> |
| 31 | #endif |
| 32 | |
| 33 | #ifdef XSERVER_PLATFORM_BUS |
| 34 | #include <errno.h> |
| 35 | |
| 36 | #include <pciaccess.h> |
| 37 | #include <fcntl.h> |
| 38 | #include <unistd.h> |
| 39 | #include "os.h" |
| 40 | #include "hotplug.h" |
| 41 | |
| 42 | #include "xf86.h" |
| 43 | #include "xf86_OSproc.h" |
| 44 | #include "xf86Priv.h" |
| 45 | #include "xf86str.h" |
| 46 | #include "xf86Bus.h" |
| 47 | #include "Pci.h" |
| 48 | #include "xf86platformBus.h" |
| 49 | |
| 50 | #include "randrstr.h" |
| 51 | int platformSlotClaimed; |
| 52 | |
| 53 | int xf86_num_platform_devices; |
| 54 | |
| 55 | static struct xf86_platform_device *xf86_platform_devices; |
| 56 | |
| 57 | int |
| 58 | xf86_add_platform_device(struct OdevAttributes *attribs) |
| 59 | { |
| 60 | xf86_platform_devices = xnfrealloc(xf86_platform_devices, |
| 61 | (sizeof(struct xf86_platform_device) |
| 62 | * (xf86_num_platform_devices + 1))); |
| 63 | |
| 64 | xf86_platform_devices[xf86_num_platform_devices].attribs = attribs; |
| 65 | xf86_platform_devices[xf86_num_platform_devices].pdev = NULL; |
| 66 | |
| 67 | xf86_num_platform_devices++; |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | int |
| 72 | xf86_remove_platform_device(int dev_index) |
| 73 | { |
| 74 | int j; |
| 75 | |
| 76 | config_odev_free_attribute_list(xf86_platform_devices[dev_index].attribs); |
| 77 | |
| 78 | for (j = dev_index; j < xf86_num_platform_devices - 1; j++) |
| 79 | memcpy(&xf86_platform_devices[j], &xf86_platform_devices[j + 1], sizeof(struct xf86_platform_device)); |
| 80 | xf86_num_platform_devices--; |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | Bool |
| 85 | xf86_add_platform_device_attrib(int index, int attrib_id, char *attrib_name) |
| 86 | { |
| 87 | struct xf86_platform_device *device = &xf86_platform_devices[index]; |
| 88 | |
| 89 | return config_odev_add_attribute(device->attribs, attrib_id, attrib_name); |
| 90 | } |
| 91 | |
| 92 | char * |
| 93 | xf86_get_platform_attrib(int index, int attrib_id) |
| 94 | { |
| 95 | struct xf86_platform_device *device = &xf86_platform_devices[index]; |
| 96 | struct OdevAttribute *oa; |
| 97 | |
| 98 | xorg_list_for_each_entry(oa, &device->attribs->list, member) { |
| 99 | if (oa->attrib_id == attrib_id) |
| 100 | return oa->attrib_name; |
| 101 | } |
| 102 | return NULL; |
| 103 | } |
| 104 | |
| 105 | char * |
| 106 | xf86_get_platform_device_attrib(struct xf86_platform_device *device, int attrib_id) |
| 107 | { |
| 108 | struct OdevAttribute *oa; |
| 109 | |
| 110 | xorg_list_for_each_entry(oa, &device->attribs->list, member) { |
| 111 | if (oa->attrib_id == attrib_id) |
| 112 | return oa->attrib_name; |
| 113 | } |
| 114 | return NULL; |
| 115 | } |
| 116 | |
| 117 | Bool |
| 118 | xf86_get_platform_device_unowned(int index) |
| 119 | { |
| 120 | return xf86_platform_devices[index].attribs->unowned; |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | * xf86IsPrimaryPlatform() -- return TRUE if primary device |
| 125 | * is a platform device and it matches this one. |
| 126 | */ |
| 127 | |
| 128 | static Bool |
| 129 | xf86IsPrimaryPlatform(struct xf86_platform_device *plat) |
| 130 | { |
| 131 | return ((primaryBus.type == BUS_PLATFORM) && (plat == primaryBus.id.plat)); |
| 132 | } |
| 133 | |
| 134 | static void |
| 135 | platform_find_pci_info(struct xf86_platform_device *pd, char *busid) |
| 136 | { |
| 137 | struct pci_slot_match devmatch; |
| 138 | struct pci_device *info; |
| 139 | struct pci_device_iterator *iter; |
| 140 | int ret; |
| 141 | |
| 142 | ret = sscanf(busid, "pci:%04x:%02x:%02x.%u", |
| 143 | &devmatch.domain, &devmatch.bus, &devmatch.dev, |
| 144 | &devmatch.func); |
| 145 | if (ret != 4) |
| 146 | return; |
| 147 | |
| 148 | iter = pci_slot_match_iterator_create(&devmatch); |
| 149 | info = pci_device_next(iter); |
| 150 | if (info) { |
| 151 | pd->pdev = info; |
| 152 | pci_device_probe(info); |
| 153 | if (pci_device_is_boot_vga(info)) { |
| 154 | primaryBus.type = BUS_PLATFORM; |
| 155 | primaryBus.id.plat = pd; |
| 156 | } |
| 157 | } |
| 158 | pci_iterator_destroy(iter); |
| 159 | |
| 160 | } |
| 161 | |
| 162 | static Bool |
| 163 | xf86_check_platform_slot(const struct xf86_platform_device *pd) |
| 164 | { |
| 165 | int i; |
| 166 | |
| 167 | for (i = 0; i < xf86NumEntities; i++) { |
| 168 | const EntityPtr u = xf86Entities[i]; |
| 169 | |
| 170 | if (pd->pdev && u->bus.type == BUS_PCI) |
| 171 | return !MATCH_PCI_DEVICES(pd->pdev, u->bus.id.pci); |
| 172 | if ((u->bus.type == BUS_PLATFORM) && (pd == u->bus.id.plat)) { |
| 173 | return FALSE; |
| 174 | } |
| 175 | } |
| 176 | return TRUE; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * @return The numbers of found devices that match with the current system |
| 181 | * drivers. |
| 182 | */ |
| 183 | int |
| 184 | xf86PlatformMatchDriver(char *matches[], int nmatches) |
| 185 | { |
| 186 | int i, j = 0; |
| 187 | struct pci_device *info = NULL; |
| 188 | int pass = 0; |
| 189 | |
| 190 | for (pass = 0; pass < 2; pass++) { |
| 191 | for (i = 0; i < xf86_num_platform_devices; i++) { |
| 192 | |
| 193 | if (xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 1)) |
| 194 | continue; |
| 195 | else if (!xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 0)) |
| 196 | continue; |
| 197 | |
| 198 | info = xf86_platform_devices[i].pdev; |
| 199 | #ifdef __linux__ |
| 200 | if (info) |
| 201 | xf86MatchDriverFromFiles(matches, info->vendor_id, info->device_id); |
| 202 | #endif |
| 203 | |
| 204 | for (j = 0; (j < nmatches) && (matches[j]); j++) { |
| 205 | /* find end of matches list */ |
| 206 | } |
| 207 | |
| 208 | if ((info != NULL) && (j < nmatches)) { |
| 209 | j += xf86VideoPtrToDriverList(info, &(matches[j]), nmatches - j); |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | return j; |
| 214 | } |
| 215 | |
| 216 | int |
| 217 | xf86platformProbe(void) |
| 218 | { |
| 219 | int i; |
| 220 | Bool pci = TRUE; |
| 221 | |
| 222 | config_odev_probe(xf86PlatformDeviceProbe); |
| 223 | |
| 224 | if (!xf86scanpci()) { |
| 225 | pci = FALSE; |
| 226 | } |
| 227 | |
| 228 | for (i = 0; i < xf86_num_platform_devices; i++) { |
| 229 | char *busid = xf86_get_platform_attrib(i, ODEV_ATTRIB_BUSID); |
| 230 | |
| 231 | if (pci && (strncmp(busid, "pci:", 4) == 0)) { |
| 232 | platform_find_pci_info(&xf86_platform_devices[i], busid); |
| 233 | } |
| 234 | } |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | static int |
| 239 | xf86ClaimPlatformSlot(struct xf86_platform_device * d, DriverPtr drvp, |
| 240 | int chipset, GDevPtr dev, Bool active) |
| 241 | { |
| 242 | EntityPtr p = NULL; |
| 243 | int num; |
| 244 | |
| 245 | if (xf86_check_platform_slot(d)) { |
| 246 | num = xf86AllocateEntity(); |
| 247 | p = xf86Entities[num]; |
| 248 | p->driver = drvp; |
| 249 | p->chipset = chipset; |
| 250 | p->bus.type = BUS_PLATFORM; |
| 251 | p->bus.id.plat = d; |
| 252 | p->active = active; |
| 253 | p->inUse = FALSE; |
| 254 | if (dev) |
| 255 | xf86AddDevToEntity(num, dev); |
| 256 | |
| 257 | platformSlotClaimed++; |
| 258 | return num; |
| 259 | } |
| 260 | else |
| 261 | return -1; |
| 262 | } |
| 263 | |
| 264 | static int |
| 265 | xf86UnclaimPlatformSlot(struct xf86_platform_device *d, GDevPtr dev) |
| 266 | { |
| 267 | int i; |
| 268 | |
| 269 | for (i = 0; i < xf86NumEntities; i++) { |
| 270 | const EntityPtr p = xf86Entities[i]; |
| 271 | |
| 272 | if ((p->bus.type == BUS_PLATFORM) && (p->bus.id.plat == d)) { |
| 273 | if (dev) |
| 274 | xf86RemoveDevFromEntity(i, dev); |
| 275 | platformSlotClaimed--; |
| 276 | p->bus.type = BUS_NONE; |
| 277 | return 0; |
| 278 | } |
| 279 | } |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | |
| 284 | #define END_OF_MATCHES(m) \ |
| 285 | (((m).vendor_id == 0) && ((m).device_id == 0) && ((m).subvendor_id == 0)) |
| 286 | |
| 287 | static Bool doPlatformProbe(struct xf86_platform_device *dev, DriverPtr drvp, |
| 288 | GDevPtr gdev, int flags, intptr_t match_data) |
| 289 | { |
| 290 | Bool foundScreen = FALSE; |
| 291 | int entity; |
| 292 | |
| 293 | if (gdev->screen == 0 && !xf86_check_platform_slot(dev)) |
| 294 | return FALSE; |
| 295 | |
| 296 | entity = xf86ClaimPlatformSlot(dev, drvp, 0, |
| 297 | gdev, gdev->active); |
| 298 | |
| 299 | if ((entity == -1) && (gdev->screen > 0)) { |
| 300 | unsigned nent; |
| 301 | |
| 302 | for (nent = 0; nent < xf86NumEntities; nent++) { |
| 303 | EntityPtr pEnt = xf86Entities[nent]; |
| 304 | |
| 305 | if (pEnt->bus.type != BUS_PLATFORM) |
| 306 | continue; |
| 307 | if (pEnt->bus.id.plat == dev) { |
| 308 | entity = nent; |
| 309 | xf86AddDevToEntity(nent, gdev); |
| 310 | break; |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | if (entity != -1) { |
| 315 | if (drvp->platformProbe(drvp, entity, flags, dev, match_data)) |
| 316 | foundScreen = TRUE; |
| 317 | else |
| 318 | xf86UnclaimPlatformSlot(dev, gdev); |
| 319 | } |
| 320 | return foundScreen; |
| 321 | } |
| 322 | |
| 323 | static Bool |
| 324 | probeSingleDevice(struct xf86_platform_device *dev, DriverPtr drvp, GDevPtr gdev, int flags) |
| 325 | { |
| 326 | int k; |
| 327 | Bool foundScreen = FALSE; |
| 328 | struct pci_device *pPci; |
| 329 | const struct pci_id_match *const devices = drvp->supported_devices; |
| 330 | |
| 331 | if (dev->pdev && devices) { |
| 332 | int device_id = dev->pdev->device_id; |
| 333 | pPci = dev->pdev; |
| 334 | for (k = 0; !END_OF_MATCHES(devices[k]); k++) { |
| 335 | if (PCI_ID_COMPARE(devices[k].vendor_id, pPci->vendor_id) |
| 336 | && PCI_ID_COMPARE(devices[k].device_id, device_id) |
| 337 | && ((devices[k].device_class_mask & pPci->device_class) |
| 338 | == devices[k].device_class)) { |
| 339 | foundScreen = doPlatformProbe(dev, drvp, gdev, flags, devices[k].match_data); |
| 340 | if (foundScreen) |
| 341 | break; |
| 342 | } |
| 343 | } |
| 344 | } |
| 345 | else if (dev->pdev && !devices) |
| 346 | return FALSE; |
| 347 | else |
| 348 | foundScreen = doPlatformProbe(dev, drvp, gdev, flags, 0); |
| 349 | return foundScreen; |
| 350 | } |
| 351 | |
| 352 | int |
| 353 | xf86platformProbeDev(DriverPtr drvp) |
| 354 | { |
| 355 | Bool foundScreen = FALSE; |
| 356 | GDevPtr *devList; |
| 357 | const unsigned numDevs = xf86MatchDevice(drvp->driverName, &devList); |
| 358 | int i, j; |
| 359 | |
| 360 | /* find the main device or any device specificed in xorg.conf */ |
| 361 | for (i = 0; i < numDevs; i++) { |
| 362 | for (j = 0; j < xf86_num_platform_devices; j++) { |
| 363 | if (devList[i]->busID && *devList[i]->busID) { |
| 364 | if (xf86PlatformDeviceCheckBusID(&xf86_platform_devices[j], devList[i]->busID)) |
| 365 | break; |
| 366 | } |
| 367 | else { |
| 368 | /* for non-seat0 servers assume first device is the master */ |
| 369 | if (ServerIsNotSeat0()) |
| 370 | break; |
| 371 | if (xf86_platform_devices[j].pdev) { |
| 372 | if (xf86IsPrimaryPlatform(&xf86_platform_devices[j])) |
| 373 | break; |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | if (j == xf86_num_platform_devices) |
| 379 | continue; |
| 380 | |
| 381 | foundScreen = probeSingleDevice(&xf86_platform_devices[j], drvp, devList[i], 0); |
| 382 | if (!foundScreen) |
| 383 | continue; |
| 384 | } |
| 385 | |
| 386 | /* if autoaddgpu devices is enabled then go find a few more and add them as GPU screens */ |
| 387 | if (xf86Info.autoAddGPU && numDevs) { |
| 388 | for (j = 0; j < xf86_num_platform_devices; j++) { |
| 389 | probeSingleDevice(&xf86_platform_devices[j], drvp, devList[0], PLATFORM_PROBE_GPU_SCREEN); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | return foundScreen; |
| 394 | } |
| 395 | |
| 396 | int |
| 397 | xf86platformAddDevice(int index) |
| 398 | { |
| 399 | int i, old_screens, scr_index; |
| 400 | DriverPtr drvp = NULL; |
| 401 | int entity; |
| 402 | screenLayoutPtr layout; |
| 403 | static char *hotplug_driver_name = "modesetting"; |
| 404 | |
| 405 | /* force load the driver for now */ |
| 406 | xf86LoadOneModule(hotplug_driver_name, NULL); |
| 407 | |
| 408 | for (i = 0; i < xf86NumDrivers; i++) { |
| 409 | if (!xf86DriverList[i]) |
| 410 | continue; |
| 411 | |
| 412 | if (!strcmp(xf86DriverList[i]->driverName, hotplug_driver_name)) { |
| 413 | drvp = xf86DriverList[i]; |
| 414 | break; |
| 415 | } |
| 416 | } |
| 417 | if (i == xf86NumDrivers) |
| 418 | return -1; |
| 419 | |
| 420 | old_screens = xf86NumGPUScreens; |
| 421 | entity = xf86ClaimPlatformSlot(&xf86_platform_devices[index], |
| 422 | drvp, 0, 0, 0); |
| 423 | if (!drvp->platformProbe(drvp, entity, PLATFORM_PROBE_GPU_SCREEN, &xf86_platform_devices[index], 0)) { |
| 424 | xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL); |
| 425 | } |
| 426 | if (old_screens == xf86NumGPUScreens) |
| 427 | return -1; |
| 428 | i = old_screens; |
| 429 | |
| 430 | for (layout = xf86ConfigLayout.screens; layout->screen != NULL; |
| 431 | layout++) { |
| 432 | xf86GPUScreens[i]->confScreen = layout->screen; |
| 433 | break; |
| 434 | } |
| 435 | |
| 436 | if (xf86GPUScreens[i]->PreInit && |
| 437 | xf86GPUScreens[i]->PreInit(xf86GPUScreens[i], 0)) |
| 438 | xf86GPUScreens[i]->configured = TRUE; |
| 439 | |
| 440 | if (!xf86GPUScreens[i]->configured) { |
| 441 | ErrorF("hotplugged device %d didn't configure\n", i); |
| 442 | xf86DeleteScreen(xf86GPUScreens[i]); |
| 443 | return -1; |
| 444 | } |
| 445 | |
| 446 | scr_index = AddGPUScreen(xf86GPUScreens[i]->ScreenInit, 0, NULL); |
| 447 | if (scr_index == -1) { |
| 448 | xf86DeleteScreen(xf86GPUScreens[i]); |
| 449 | xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL); |
| 450 | xf86NumGPUScreens = old_screens; |
| 451 | return -1; |
| 452 | } |
| 453 | dixSetPrivate(&xf86GPUScreens[i]->pScreen->devPrivates, |
| 454 | xf86ScreenKey, xf86GPUScreens[i]); |
| 455 | |
| 456 | CreateScratchPixmapsForScreen(xf86GPUScreens[i]->pScreen); |
| 457 | |
| 458 | if (xf86GPUScreens[i]->pScreen->CreateScreenResources && |
| 459 | !(*xf86GPUScreens[i]->pScreen->CreateScreenResources) (xf86GPUScreens[i]->pScreen)) { |
| 460 | RemoveGPUScreen(xf86GPUScreens[i]->pScreen); |
| 461 | xf86DeleteScreen(xf86GPUScreens[i]); |
| 462 | xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL); |
| 463 | xf86NumGPUScreens = old_screens; |
| 464 | return -1; |
| 465 | } |
| 466 | /* attach unbound to 0 protocol screen */ |
| 467 | AttachUnboundGPU(xf86Screens[0]->pScreen, xf86GPUScreens[i]->pScreen); |
| 468 | |
| 469 | RRResourcesChanged(xf86Screens[0]->pScreen); |
| 470 | RRTellChanged(xf86Screens[0]->pScreen); |
| 471 | |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | void |
| 476 | xf86platformRemoveDevice(int index) |
| 477 | { |
| 478 | EntityPtr entity; |
| 479 | int ent_num, i, j; |
| 480 | Bool found; |
| 481 | |
| 482 | for (ent_num = 0; ent_num < xf86NumEntities; ent_num++) { |
| 483 | entity = xf86Entities[ent_num]; |
| 484 | if (entity->bus.type == BUS_PLATFORM && |
| 485 | entity->bus.id.plat == &xf86_platform_devices[index]) |
| 486 | break; |
| 487 | } |
| 488 | if (ent_num == xf86NumEntities) |
| 489 | goto out; |
| 490 | |
| 491 | found = FALSE; |
| 492 | for (i = 0; i < xf86NumGPUScreens; i++) { |
| 493 | for (j = 0; j < xf86GPUScreens[i]->numEntities; j++) |
| 494 | if (xf86GPUScreens[i]->entityList[j] == ent_num) { |
| 495 | found = TRUE; |
| 496 | break; |
| 497 | } |
| 498 | if (found) |
| 499 | break; |
| 500 | } |
| 501 | if (!found) { |
| 502 | ErrorF("failed to find screen to remove\n"); |
| 503 | goto out; |
| 504 | } |
| 505 | |
| 506 | xf86GPUScreens[i]->pScreen->CloseScreen(xf86GPUScreens[i]->pScreen); |
| 507 | |
| 508 | RemoveGPUScreen(xf86GPUScreens[i]->pScreen); |
| 509 | xf86DeleteScreen(xf86GPUScreens[i]); |
| 510 | |
| 511 | xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL); |
| 512 | |
| 513 | xf86_remove_platform_device(index); |
| 514 | |
| 515 | RRResourcesChanged(xf86Screens[0]->pScreen); |
| 516 | RRTellChanged(xf86Screens[0]->pScreen); |
| 517 | out: |
| 518 | return; |
| 519 | } |
| 520 | |
| 521 | /* called on return from VT switch to find any new devices */ |
| 522 | void xf86platformVTProbe(void) |
| 523 | { |
| 524 | int i; |
| 525 | |
| 526 | for (i = 0; i < xf86_num_platform_devices; i++) { |
| 527 | if (xf86_platform_devices[i].attribs->unowned == FALSE) |
| 528 | continue; |
| 529 | |
| 530 | xf86_platform_devices[i].attribs->unowned = FALSE; |
| 531 | xf86PlatformReprobeDevice(i, xf86_platform_devices[i].attribs); |
| 532 | } |
| 533 | } |
| 534 | #endif |