1 /* 2 * Copyright 2012 Red Hat Inc. 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 25 #ifdef HAVE_CONFIG_H 26 #include <config.h> 27 #endif 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <stdint.h> 32 #include <string.h> 33 #include <strings.h> 34 #include <stdbool.h> 35 #include <assert.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 39 #include <xf86drm.h> 40 #include <xf86atomic.h> 41 #include "libdrm_macros.h" 42 #include "libdrm_lists.h" 43 #include "nouveau_drm.h" 44 45 #include "nouveau.h" 46 #include "private.h" 47 48 #include "nvif/class.h" 49 #include "nvif/cl0080.h" 50 #include "nvif/ioctl.h" 51 #include "nvif/unpack.h" 52 53 #ifdef DEBUG 54 drm_private uint32_t nouveau_debug = 0; 55 56 static void 57 debug_init(char *args) 58 { 59 if (args) { 60 int n = strtol(args, NULL, 0); 61 if (n >= 0) 62 nouveau_debug = n; 63 } 64 } 65 #endif 66 67 static int 68 nouveau_object_ioctl(struct nouveau_object *obj, void *data, uint32_t size) 69 { 70 struct nouveau_drm *drm = nouveau_drm(obj); 71 union { 72 struct nvif_ioctl_v0 v0; 73 } *args = data; 74 uint32_t argc = size; 75 int ret = -ENOSYS; 76 77 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { 78 if (!obj->length) { 79 if (obj != &drm->client) 80 args->v0.object = (unsigned long)(void *)obj; 81 else 82 args->v0.object = 0; 83 args->v0.owner = NVIF_IOCTL_V0_OWNER_ANY; 84 args->v0.route = 0x00; 85 } else { 86 args->v0.route = 0xff; 87 args->v0.token = obj->handle; 88 } 89 } else 90 return ret; 91 92 return drmCommandWriteRead(drm->fd, DRM_NOUVEAU_NVIF, args, argc); 93 } 94 95 int 96 nouveau_object_mthd(struct nouveau_object *obj, 97 uint32_t mthd, void *data, uint32_t size) 98 { 99 struct nouveau_drm *drm = nouveau_drm(obj); 100 struct { 101 struct nvif_ioctl_v0 ioctl; 102 struct nvif_ioctl_mthd_v0 mthd; 103 } *args; 104 uint32_t argc = sizeof(*args) + size; 105 uint8_t stack[128]; 106 int ret; 107 108 if (!drm->nvif) 109 return -ENOSYS; 110 111 if (argc > sizeof(stack)) { 112 if (!(args = malloc(argc))) 113 return -ENOMEM; 114 } else { 115 args = (void *)stack; 116 } 117 args->ioctl.version = 0; 118 args->ioctl.type = NVIF_IOCTL_V0_MTHD; 119 args->mthd.version = 0; 120 args->mthd.method = mthd; 121 122 memcpy(args->mthd.data, data, size); 123 ret = nouveau_object_ioctl(obj, args, argc); 124 memcpy(data, args->mthd.data, size); 125 if (args != (void *)stack) 126 free(args); 127 return ret; 128 } 129 130 void 131 nouveau_object_sclass_put(struct nouveau_sclass **psclass) 132 { 133 free(*psclass); 134 *psclass = NULL; 135 } 136 137 int 138 nouveau_object_sclass_get(struct nouveau_object *obj, 139 struct nouveau_sclass **psclass) 140 { 141 struct nouveau_drm *drm = nouveau_drm(obj); 142 struct { 143 struct nvif_ioctl_v0 ioctl; 144 struct nvif_ioctl_sclass_v0 sclass; 145 } *args = NULL; 146 struct nouveau_sclass *sclass; 147 int ret, cnt = 0, i; 148 uint32_t size; 149 150 if (!drm->nvif) 151 return abi16_sclass(obj, psclass); 152 153 while (1) { 154 size = sizeof(*args) + cnt * sizeof(args->sclass.oclass[0]); 155 if (!(args = malloc(size))) 156 return -ENOMEM; 157 args->ioctl.version = 0; 158 args->ioctl.type = NVIF_IOCTL_V0_SCLASS; 159 args->sclass.version = 0; 160 args->sclass.count = cnt; 161 162 ret = nouveau_object_ioctl(obj, args, size); 163 if (ret == 0 && args->sclass.count <= cnt) 164 break; 165 cnt = args->sclass.count; 166 free(args); 167 if (ret != 0) 168 return ret; 169 } 170 171 if ((sclass = calloc(args->sclass.count, sizeof(*sclass)))) { 172 for (i = 0; i < args->sclass.count; i++) { 173 sclass[i].oclass = args->sclass.oclass[i].oclass; 174 sclass[i].minver = args->sclass.oclass[i].minver; 175 sclass[i].maxver = args->sclass.oclass[i].maxver; 176 } 177 *psclass = sclass; 178 ret = args->sclass.count; 179 } else { 180 ret = -ENOMEM; 181 } 182 183 free(args); 184 return ret; 185 } 186 187 int 188 nouveau_object_mclass(struct nouveau_object *obj, 189 const struct nouveau_mclass *mclass) 190 { 191 struct nouveau_sclass *sclass; 192 int ret = -ENODEV; 193 int cnt, i, j; 194 195 cnt = nouveau_object_sclass_get(obj, &sclass); 196 if (cnt < 0) 197 return cnt; 198 199 for (i = 0; ret < 0 && mclass[i].oclass; i++) { 200 for (j = 0; j < cnt; j++) { 201 if (mclass[i].oclass == sclass[j].oclass && 202 mclass[i].version >= sclass[j].minver && 203 mclass[i].version <= sclass[j].maxver) { 204 ret = i; 205 break; 206 } 207 } 208 } 209 210 nouveau_object_sclass_put(&sclass); 211 return ret; 212 } 213 214 static void 215 nouveau_object_fini(struct nouveau_object *obj) 216 { 217 struct { 218 struct nvif_ioctl_v0 ioctl; 219 struct nvif_ioctl_del del; 220 } args = { 221 .ioctl.type = NVIF_IOCTL_V0_DEL, 222 }; 223 224 if (obj->data) { 225 abi16_delete(obj); 226 free(obj->data); 227 obj->data = NULL; 228 return; 229 } 230 231 nouveau_object_ioctl(obj, &args, sizeof(args)); 232 } 233 234 static int 235 nouveau_object_init(struct nouveau_object *parent, uint32_t handle, 236 int32_t oclass, void *data, uint32_t size, 237 struct nouveau_object *obj) 238 { 239 struct nouveau_drm *drm = nouveau_drm(parent); 240 struct { 241 struct nvif_ioctl_v0 ioctl; 242 struct nvif_ioctl_new_v0 new; 243 } *args; 244 uint32_t argc = sizeof(*args) + size; 245 int (*func)(struct nouveau_object *); 246 int ret = -ENOSYS; 247 248 obj->parent = parent; 249 obj->handle = handle; 250 obj->oclass = oclass; 251 obj->length = 0; 252 obj->data = NULL; 253 254 if (!abi16_object(obj, &func) && drm->nvif) { 255 if (!(args = malloc(argc))) 256 return -ENOMEM; 257 args->ioctl.version = 0; 258 args->ioctl.type = NVIF_IOCTL_V0_NEW; 259 args->new.version = 0; 260 args->new.route = NVIF_IOCTL_V0_ROUTE_NVIF; 261 args->new.token = (unsigned long)(void *)obj; 262 args->new.object = (unsigned long)(void *)obj; 263 args->new.handle = handle; 264 args->new.oclass = oclass; 265 memcpy(args->new.data, data, size); 266 ret = nouveau_object_ioctl(parent, args, argc); 267 memcpy(data, args->new.data, size); 268 free(args); 269 } else 270 if (func) { 271 obj->length = size ? size : sizeof(struct nouveau_object *); 272 if (!(obj->data = malloc(obj->length))) 273 return -ENOMEM; 274 if (data) 275 memcpy(obj->data, data, obj->length); 276 *(struct nouveau_object **)obj->data = obj; 277 278 ret = func(obj); 279 } 280 281 if (ret) { 282 nouveau_object_fini(obj); 283 return ret; 284 } 285 286 return 0; 287 } 288 289 int 290 nouveau_object_new(struct nouveau_object *parent, uint64_t handle, 291 uint32_t oclass, void *data, uint32_t length, 292 struct nouveau_object **pobj) 293 { 294 struct nouveau_object *obj; 295 int ret; 296 297 if (!(obj = malloc(sizeof(*obj)))) 298 return -ENOMEM; 299 300 ret = nouveau_object_init(parent, handle, oclass, data, length, obj); 301 if (ret) { 302 free(obj); 303 return ret; 304 } 305 306 *pobj = obj; 307 return 0; 308 } 309 310 void 311 nouveau_object_del(struct nouveau_object **pobj) 312 { 313 struct nouveau_object *obj = *pobj; 314 if (obj) { 315 nouveau_object_fini(obj); 316 free(obj); 317 *pobj = NULL; 318 } 319 } 320 321 void 322 nouveau_drm_del(struct nouveau_drm **pdrm) 323 { 324 free(*pdrm); 325 *pdrm = NULL; 326 } 327 328 int 329 nouveau_drm_new(int fd, struct nouveau_drm **pdrm) 330 { 331 struct nouveau_drm *drm; 332 drmVersionPtr ver; 333 334 #ifdef DEBUG 335 debug_init(getenv("NOUVEAU_LIBDRM_DEBUG")); 336 #endif 337 338 if (!(drm = calloc(1, sizeof(*drm)))) 339 return -ENOMEM; 340 drm->fd = fd; 341 342 if (!(ver = drmGetVersion(fd))) { 343 nouveau_drm_del(&drm); 344 return -EINVAL; 345 } 346 *pdrm = drm; 347 348 drm->version = (ver->version_major << 24) | 349 (ver->version_minor << 8) | 350 ver->version_patchlevel; 351 drm->nvif = (drm->version >= 0x01000301); 352 drmFreeVersion(ver); 353 return 0; 354 } 355 356 /* this is the old libdrm's version of nouveau_device_wrap(), the symbol 357 * is kept here to prevent AIGLX from crashing if the DDX is linked against 358 * the new libdrm, but the DRI driver against the old 359 */ 360 int 361 nouveau_device_open_existing(struct nouveau_device **pdev, int close, int fd, 362 drm_context_t ctx) 363 { 364 return -EACCES; 365 } 366 367 int 368 nouveau_device_new(struct nouveau_object *parent, int32_t oclass, 369 void *data, uint32_t size, struct nouveau_device **pdev) 370 { 371 struct nv_device_info_v0 info = {}; 372 union { 373 struct nv_device_v0 v0; 374 } *args = data; 375 uint32_t argc = size; 376 struct nouveau_drm *drm = nouveau_drm(parent); 377 struct nouveau_device_priv *nvdev; 378 struct nouveau_device *dev; 379 uint64_t v; 380 char *tmp; 381 int ret = -ENOSYS; 382 383 if (oclass != NV_DEVICE || 384 nvif_unpack(ret, &data, &size, args->v0, 0, 0, false)) 385 return ret; 386 387 if (!(nvdev = calloc(1, sizeof(*nvdev)))) 388 return -ENOMEM; 389 dev = *pdev = &nvdev->base; 390 dev->fd = -1; 391 392 if (drm->nvif) { 393 ret = nouveau_object_init(parent, 0, oclass, args, argc, 394 &dev->object); 395 if (ret) 396 goto done; 397 398 info.version = 0; 399 400 ret = nouveau_object_mthd(&dev->object, NV_DEVICE_V0_INFO, 401 &info, sizeof(info)); 402 if (ret) 403 goto done; 404 405 nvdev->base.chipset = info.chipset; 406 nvdev->have_bo_usage = true; 407 } else 408 if (args->v0.device == ~0ULL) { 409 nvdev->base.object.parent = &drm->client; 410 nvdev->base.object.handle = ~0ULL; 411 nvdev->base.object.oclass = NOUVEAU_DEVICE_CLASS; 412 nvdev->base.object.length = ~0; 413 414 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_CHIPSET_ID, &v); 415 if (ret) 416 goto done; 417 nvdev->base.chipset = v; 418 419 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_HAS_BO_USAGE, &v); 420 if (ret == 0) 421 nvdev->have_bo_usage = (v != 0); 422 } else 423 return -ENOSYS; 424 425 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_FB_SIZE, &v); 426 if (ret) 427 goto done; 428 nvdev->base.vram_size = v; 429 430 ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_AGP_SIZE, &v); 431 if (ret) 432 goto done; 433 nvdev->base.gart_size = v; 434 435 tmp = getenv("NOUVEAU_LIBDRM_VRAM_LIMIT_PERCENT"); 436 if (tmp) 437 nvdev->vram_limit_percent = atoi(tmp); 438 else 439 nvdev->vram_limit_percent = 80; 440 441 nvdev->base.vram_limit = 442 (nvdev->base.vram_size * nvdev->vram_limit_percent) / 100; 443 444 tmp = getenv("NOUVEAU_LIBDRM_GART_LIMIT_PERCENT"); 445 if (tmp) 446 nvdev->gart_limit_percent = atoi(tmp); 447 else 448 nvdev->gart_limit_percent = 80; 449 450 nvdev->base.gart_limit = 451 (nvdev->base.gart_size * nvdev->gart_limit_percent) / 100; 452 453 ret = pthread_mutex_init(&nvdev->lock, NULL); 454 DRMINITLISTHEAD(&nvdev->bo_list); 455 done: 456 if (ret) 457 nouveau_device_del(pdev); 458 return ret; 459 } 460 461 int 462 nouveau_device_wrap(int fd, int close, struct nouveau_device **pdev) 463 { 464 struct nouveau_drm *drm; 465 struct nouveau_device_priv *nvdev; 466 int ret; 467 468 ret = nouveau_drm_new(fd, &drm); 469 if (ret) 470 return ret; 471 drm->nvif = false; 472 473 ret = nouveau_device_new(&drm->client, NV_DEVICE, 474 &(struct nv_device_v0) { 475 .device = ~0ULL, 476 }, sizeof(struct nv_device_v0), pdev); 477 if (ret) { 478 nouveau_drm_del(&drm); 479 return ret; 480 } 481 482 nvdev = nouveau_device(*pdev); 483 nvdev->base.fd = drm->fd; 484 nvdev->base.drm_version = drm->version; 485 nvdev->close = close; 486 return 0; 487 } 488 489 int 490 nouveau_device_open(const char *busid, struct nouveau_device **pdev) 491 { 492 int ret = -ENODEV, fd = drmOpen("nouveau", busid); 493 if (fd >= 0) { 494 ret = nouveau_device_wrap(fd, 1, pdev); 495 if (ret) 496 drmClose(fd); 497 } 498 return ret; 499 } 500 501 void 502 nouveau_device_del(struct nouveau_device **pdev) 503 { 504 struct nouveau_device_priv *nvdev = nouveau_device(*pdev); 505 if (nvdev) { 506 free(nvdev->client); 507 pthread_mutex_destroy(&nvdev->lock); 508 if (nvdev->base.fd >= 0) { 509 struct nouveau_drm *drm = 510 nouveau_drm(&nvdev->base.object); 511 nouveau_drm_del(&drm); 512 if (nvdev->close) 513 drmClose(nvdev->base.fd); 514 } 515 free(nvdev); 516 *pdev = NULL; 517 } 518 } 519 520 int 521 nouveau_getparam(struct nouveau_device *dev, uint64_t param, uint64_t *value) 522 { 523 struct nouveau_drm *drm = nouveau_drm(&dev->object); 524 struct drm_nouveau_getparam r = { .param = param }; 525 int fd = drm->fd, ret = 526 drmCommandWriteRead(fd, DRM_NOUVEAU_GETPARAM, &r, sizeof(r)); 527 *value = r.value; 528 return ret; 529 } 530 531 int 532 nouveau_setparam(struct nouveau_device *dev, uint64_t param, uint64_t value) 533 { 534 struct nouveau_drm *drm = nouveau_drm(&dev->object); 535 struct drm_nouveau_setparam r = { .param = param, .value = value }; 536 return drmCommandWrite(drm->fd, DRM_NOUVEAU_SETPARAM, &r, sizeof(r)); 537 } 538 539 int 540 nouveau_client_new(struct nouveau_device *dev, struct nouveau_client **pclient) 541 { 542 struct nouveau_device_priv *nvdev = nouveau_device(dev); 543 struct nouveau_client_priv *pcli; 544 int id = 0, i, ret = -ENOMEM; 545 uint32_t *clients; 546 547 pthread_mutex_lock(&nvdev->lock); 548 549 for (i = 0; i < nvdev->nr_client; i++) { 550 id = ffs(nvdev->client[i]) - 1; 551 if (id >= 0) 552 goto out; 553 } 554 555 clients = realloc(nvdev->client, sizeof(uint32_t) * (i + 1)); 556 if (!clients) 557 goto unlock; 558 nvdev->client = clients; 559 nvdev->client[i] = 0; 560 nvdev->nr_client++; 561 562 out: 563 pcli = calloc(1, sizeof(*pcli)); 564 if (pcli) { 565 nvdev->client[i] |= (1 << id); 566 pcli->base.device = dev; 567 pcli->base.id = (i * 32) + id; 568 ret = 0; 569 } 570 571 *pclient = &pcli->base; 572 573 unlock: 574 pthread_mutex_unlock(&nvdev->lock); 575 return ret; 576 } 577 578 void 579 nouveau_client_del(struct nouveau_client **pclient) 580 { 581 struct nouveau_client_priv *pcli = nouveau_client(*pclient); 582 struct nouveau_device_priv *nvdev; 583 if (pcli) { 584 int id = pcli->base.id; 585 nvdev = nouveau_device(pcli->base.device); 586 pthread_mutex_lock(&nvdev->lock); 587 nvdev->client[id / 32] &= ~(1 << (id % 32)); 588 pthread_mutex_unlock(&nvdev->lock); 589 free(pcli->kref); 590 free(pcli); 591 } 592 } 593 594 static void 595 nouveau_bo_del(struct nouveau_bo *bo) 596 { 597 struct nouveau_drm *drm = nouveau_drm(&bo->device->object); 598 struct nouveau_device_priv *nvdev = nouveau_device(bo->device); 599 struct nouveau_bo_priv *nvbo = nouveau_bo(bo); 600 struct drm_gem_close req = { .handle = bo->handle }; 601 602 if (nvbo->head.next) { 603 pthread_mutex_lock(&nvdev->lock); 604 if (atomic_read(&nvbo->refcnt) == 0) { 605 DRMLISTDEL(&nvbo->head); 606 /* 607 * This bo has to be closed with the lock held because 608 * gem handles are not refcounted. If a shared bo is 609 * closed and re-opened in another thread a race 610 * against DRM_IOCTL_GEM_OPEN or drmPrimeFDToHandle 611 * might cause the bo to be closed accidentally while 612 * re-importing. 613 */ 614 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &req); 615 } 616 pthread_mutex_unlock(&nvdev->lock); 617 } else { 618 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &req); 619 } 620 if (bo->map) 621 drm_munmap(bo->map, bo->size); 622 free(nvbo); 623 } 624 625 int 626 nouveau_bo_new(struct nouveau_device *dev, uint32_t flags, uint32_t align, 627 uint64_t size, union nouveau_bo_config *config, 628 struct nouveau_bo **pbo) 629 { 630 struct nouveau_bo_priv *nvbo = calloc(1, sizeof(*nvbo)); 631 struct nouveau_bo *bo = &nvbo->base; 632 int ret; 633 634 if (!nvbo) 635 return -ENOMEM; 636 atomic_set(&nvbo->refcnt, 1); 637 bo->device = dev; 638 bo->flags = flags; 639 bo->size = size; 640 641 ret = abi16_bo_init(bo, align, config); 642 if (ret) { 643 free(nvbo); 644 return ret; 645 } 646 647 *pbo = bo; 648 return 0; 649 } 650 651 static int 652 nouveau_bo_wrap_locked(struct nouveau_device *dev, uint32_t handle, 653 struct nouveau_bo **pbo, int name) 654 { 655 struct nouveau_drm *drm = nouveau_drm(&dev->object); 656 struct nouveau_device_priv *nvdev = nouveau_device(dev); 657 struct drm_nouveau_gem_info req = { .handle = handle }; 658 struct nouveau_bo_priv *nvbo; 659 int ret; 660 661 DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) { 662 if (nvbo->base.handle == handle) { 663 if (atomic_inc_return(&nvbo->refcnt) == 1) { 664 /* 665 * Uh oh, this bo is dead and someone else 666 * will free it, but because refcnt is 667 * now non-zero fortunately they won't 668 * call the ioctl to close the bo. 669 * 670 * Remove this bo from the list so other 671 * calls to nouveau_bo_wrap_locked will 672 * see our replacement nvbo. 673 */ 674 DRMLISTDEL(&nvbo->head); 675 if (!name) 676 name = nvbo->name; 677 break; 678 } 679 680 *pbo = &nvbo->base; 681 return 0; 682 } 683 } 684 685 ret = drmCommandWriteRead(drm->fd, DRM_NOUVEAU_GEM_INFO, 686 &req, sizeof(req)); 687 if (ret) 688 return ret; 689 690 nvbo = calloc(1, sizeof(*nvbo)); 691 if (nvbo) { 692 atomic_set(&nvbo->refcnt, 1); 693 nvbo->base.device = dev; 694 abi16_bo_info(&nvbo->base, &req); 695 nvbo->name = name; 696 DRMLISTADD(&nvbo->head, &nvdev->bo_list); 697 *pbo = &nvbo->base; 698 return 0; 699 } 700 701 return -ENOMEM; 702 } 703 704 static void 705 nouveau_bo_make_global(struct nouveau_bo_priv *nvbo) 706 { 707 if (!nvbo->head.next) { 708 struct nouveau_device_priv *nvdev = nouveau_device(nvbo->base.device); 709 pthread_mutex_lock(&nvdev->lock); 710 if (!nvbo->head.next) 711 DRMLISTADD(&nvbo->head, &nvdev->bo_list); 712 pthread_mutex_unlock(&nvdev->lock); 713 } 714 } 715 716 int 717 nouveau_bo_wrap(struct nouveau_device *dev, uint32_t handle, 718 struct nouveau_bo **pbo) 719 { 720 struct nouveau_device_priv *nvdev = nouveau_device(dev); 721 int ret; 722 pthread_mutex_lock(&nvdev->lock); 723 ret = nouveau_bo_wrap_locked(dev, handle, pbo, 0); 724 pthread_mutex_unlock(&nvdev->lock); 725 return ret; 726 } 727 728 int 729 nouveau_bo_name_ref(struct nouveau_device *dev, uint32_t name, 730 struct nouveau_bo **pbo) 731 { 732 struct nouveau_drm *drm = nouveau_drm(&dev->object); 733 struct nouveau_device_priv *nvdev = nouveau_device(dev); 734 struct nouveau_bo_priv *nvbo; 735 struct drm_gem_open req = { .name = name }; 736 int ret; 737 738 pthread_mutex_lock(&nvdev->lock); 739 DRMLISTFOREACHENTRY(nvbo, &nvdev->bo_list, head) { 740 if (nvbo->name == name) { 741 ret = nouveau_bo_wrap_locked(dev, nvbo->base.handle, 742 pbo, name); 743 pthread_mutex_unlock(&nvdev->lock); 744 return ret; 745 } 746 } 747 748 ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &req); 749 if (ret == 0) { 750 ret = nouveau_bo_wrap_locked(dev, req.handle, pbo, name); 751 } 752 753 pthread_mutex_unlock(&nvdev->lock); 754 return ret; 755 } 756 757 int 758 nouveau_bo_name_get(struct nouveau_bo *bo, uint32_t *name) 759 { 760 struct drm_gem_flink req = { .handle = bo->handle }; 761 struct nouveau_drm *drm = nouveau_drm(&bo->device->object); 762 struct nouveau_bo_priv *nvbo = nouveau_bo(bo); 763 764 *name = nvbo->name; 765 if (!*name) { 766 int ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_FLINK, &req); 767 768 if (ret) { 769 *name = 0; 770 return ret; 771 } 772 nvbo->name = *name = req.name; 773 774 nouveau_bo_make_global(nvbo); 775 } 776 return 0; 777 } 778 779 void 780 nouveau_bo_ref(struct nouveau_bo *bo, struct nouveau_bo **pref) 781 { 782 struct nouveau_bo *ref = *pref; 783 if (bo) { 784 atomic_inc(&nouveau_bo(bo)->refcnt); 785 } 786 if (ref) { 787 if (atomic_dec_and_test(&nouveau_bo(ref)->refcnt)) 788 nouveau_bo_del(ref); 789 } 790 *pref = bo; 791 } 792 793 int 794 nouveau_bo_prime_handle_ref(struct nouveau_device *dev, int prime_fd, 795 struct nouveau_bo **bo) 796 { 797 struct nouveau_drm *drm = nouveau_drm(&dev->object); 798 struct nouveau_device_priv *nvdev = nouveau_device(dev); 799 int ret; 800 unsigned int handle; 801 802 nouveau_bo_ref(NULL, bo); 803 804 pthread_mutex_lock(&nvdev->lock); 805 ret = drmPrimeFDToHandle(drm->fd, prime_fd, &handle); 806 if (ret == 0) { 807 ret = nouveau_bo_wrap_locked(dev, handle, bo, 0); 808 } 809 pthread_mutex_unlock(&nvdev->lock); 810 return ret; 811 } 812 813 int 814 nouveau_bo_set_prime(struct nouveau_bo *bo, int *prime_fd) 815 { 816 struct nouveau_drm *drm = nouveau_drm(&bo->device->object); 817 struct nouveau_bo_priv *nvbo = nouveau_bo(bo); 818 int ret; 819 820 ret = drmPrimeHandleToFD(drm->fd, nvbo->base.handle, DRM_CLOEXEC, prime_fd); 821 if (ret) 822 return ret; 823 824 nouveau_bo_make_global(nvbo); 825 return 0; 826 } 827 828 int 829 nouveau_bo_wait(struct nouveau_bo *bo, uint32_t access, 830 struct nouveau_client *client) 831 { 832 struct nouveau_drm *drm = nouveau_drm(&bo->device->object); 833 struct nouveau_bo_priv *nvbo = nouveau_bo(bo); 834 struct drm_nouveau_gem_cpu_prep req; 835 struct nouveau_pushbuf *push; 836 int ret = 0; 837 838 if (!(access & NOUVEAU_BO_RDWR)) 839 return 0; 840 841 push = cli_push_get(client, bo); 842 if (push && push->channel) 843 nouveau_pushbuf_kick(push, push->channel); 844 845 if (!nvbo->head.next && !(nvbo->access & NOUVEAU_BO_WR) && 846 !(access & NOUVEAU_BO_WR)) 847 return 0; 848 849 req.handle = bo->handle; 850 req.flags = 0; 851 if (access & NOUVEAU_BO_WR) 852 req.flags |= NOUVEAU_GEM_CPU_PREP_WRITE; 853 if (access & NOUVEAU_BO_NOBLOCK) 854 req.flags |= NOUVEAU_GEM_CPU_PREP_NOWAIT; 855 856 ret = drmCommandWrite(drm->fd, DRM_NOUVEAU_GEM_CPU_PREP, 857 &req, sizeof(req)); 858 if (ret == 0) 859 nvbo->access = 0; 860 return ret; 861 } 862 863 int 864 nouveau_bo_map(struct nouveau_bo *bo, uint32_t access, 865 struct nouveau_client *client) 866 { 867 struct nouveau_drm *drm = nouveau_drm(&bo->device->object); 868 struct nouveau_bo_priv *nvbo = nouveau_bo(bo); 869 if (bo->map == NULL) { 870 bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, 871 MAP_SHARED, drm->fd, nvbo->map_handle); 872 if (bo->map == MAP_FAILED) { 873 bo->map = NULL; 874 return -errno; 875 } 876 } 877 return nouveau_bo_wait(bo, access, client); 878 } 879
