1 /* 2 * Copyright (C) 2008 Ben Skeggs. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 27 #include <drm/drm_gem_ttm_helper.h> 28 29 #include "nouveau_drv.h" 30 #include "nouveau_dma.h" 31 #include "nouveau_fence.h" 32 #include "nouveau_abi16.h" 33 34 #include "nouveau_ttm.h" 35 #include "nouveau_gem.h" 36 #include "nouveau_mem.h" 37 #include "nouveau_vmm.h" 38 39 #include <nvif/class.h> 40 #include <nvif/push206e.h> 41 42 static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf) 43 { 44 struct vm_area_struct *vma = vmf->vma; 45 struct ttm_buffer_object *bo = vma->vm_private_data; 46 pgprot_t prot; 47 vm_fault_t ret; 48 49 ret = ttm_bo_vm_reserve(bo, vmf); 50 if (ret) 51 return ret; 52 53 ret = nouveau_ttm_fault_reserve_notify(bo); 54 if (ret) 55 goto error_unlock; 56 57 nouveau_bo_del_io_reserve_lru(bo); 58 prot = vm_get_page_prot(vma->vm_flags); 59 ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT); 60 nouveau_bo_add_io_reserve_lru(bo); 61 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) 62 return ret; 63 64 error_unlock: 65 dma_resv_unlock(bo->base.resv); 66 return ret; 67 } 68 69 static const struct vm_operations_struct nouveau_ttm_vm_ops = { 70 .fault = nouveau_ttm_fault, 71 .open = ttm_bo_vm_open, 72 .close = ttm_bo_vm_close, 73 .access = ttm_bo_vm_access 74 }; 75 76 void 77 nouveau_gem_object_del(struct drm_gem_object *gem) 78 { 79 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 80 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 81 struct device *dev = drm->dev->dev; 82 int ret; 83 84 ret = pm_runtime_get_sync(dev); 85 if (WARN_ON(ret < 0 && ret != -EACCES)) { 86 pm_runtime_put_autosuspend(dev); 87 return; 88 } 89 90 if (gem->import_attach) 91 drm_prime_gem_destroy(gem, nvbo->bo.sg); 92 93 ttm_bo_put(&nvbo->bo); 94 95 pm_runtime_mark_last_busy(dev); 96 pm_runtime_put_autosuspend(dev); 97 } 98 99 int 100 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv) 101 { 102 struct nouveau_cli *cli = nouveau_cli(file_priv); 103 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 104 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 105 struct device *dev = drm->dev->dev; 106 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm; 107 struct nouveau_vma *vma; 108 int ret; 109 110 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50) 111 return 0; 112 113 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL); 114 if (ret) 115 return ret; 116 117 ret = pm_runtime_get_sync(dev); 118 if (ret < 0 && ret != -EACCES) { 119 pm_runtime_put_autosuspend(dev); 120 goto out; 121 } 122 123 ret = nouveau_vma_new(nvbo, vmm, &vma); 124 pm_runtime_mark_last_busy(dev); 125 pm_runtime_put_autosuspend(dev); 126 out: 127 ttm_bo_unreserve(&nvbo->bo); 128 return ret; 129 } 130 131 struct nouveau_gem_object_unmap { 132 struct nouveau_cli_work work; 133 struct nouveau_vma *vma; 134 }; 135 136 static void 137 nouveau_gem_object_delete(struct nouveau_vma *vma) 138 { 139 nouveau_fence_unref(&vma->fence); 140 nouveau_vma_del(&vma); 141 } 142 143 static void 144 nouveau_gem_object_delete_work(struct nouveau_cli_work *w) 145 { 146 struct nouveau_gem_object_unmap *work = 147 container_of(w, typeof(*work), work); 148 nouveau_gem_object_delete(work->vma); 149 kfree(work); 150 } 151 152 static void 153 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma) 154 { 155 struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL; 156 struct nouveau_gem_object_unmap *work; 157 158 list_del_init(&vma->head); 159 160 if (!fence) { 161 nouveau_gem_object_delete(vma); 162 return; 163 } 164 165 if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) { 166 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0); 167 nouveau_gem_object_delete(vma); 168 return; 169 } 170 171 work->work.func = nouveau_gem_object_delete_work; 172 work->vma = vma; 173 nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work); 174 } 175 176 void 177 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv) 178 { 179 struct nouveau_cli *cli = nouveau_cli(file_priv); 180 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 181 struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev); 182 struct device *dev = drm->dev->dev; 183 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm; 184 struct nouveau_vma *vma; 185 int ret; 186 187 if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50) 188 return; 189 190 ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL); 191 if (ret) 192 return; 193 194 vma = nouveau_vma_find(nvbo, vmm); 195 if (vma) { 196 if (--vma->refs == 0) { 197 ret = pm_runtime_get_sync(dev); 198 if (!WARN_ON(ret < 0 && ret != -EACCES)) { 199 nouveau_gem_object_unmap(nvbo, vma); 200 pm_runtime_mark_last_busy(dev); 201 } 202 pm_runtime_put_autosuspend(dev); 203 } 204 } 205 ttm_bo_unreserve(&nvbo->bo); 206 } 207 208 const struct drm_gem_object_funcs nouveau_gem_object_funcs = { 209 .free = nouveau_gem_object_del, 210 .open = nouveau_gem_object_open, 211 .close = nouveau_gem_object_close, 212 .pin = nouveau_gem_prime_pin, 213 .unpin = nouveau_gem_prime_unpin, 214 .get_sg_table = nouveau_gem_prime_get_sg_table, 215 .vmap = drm_gem_ttm_vmap, 216 .vunmap = drm_gem_ttm_vunmap, 217 .mmap = drm_gem_ttm_mmap, 218 .vm_ops = &nouveau_ttm_vm_ops, 219 }; 220 221 int 222 nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain, 223 uint32_t tile_mode, uint32_t tile_flags, 224 struct nouveau_bo **pnvbo) 225 { 226 struct nouveau_drm *drm = cli->drm; 227 struct nouveau_bo *nvbo; 228 int ret; 229 230 if (!(domain & (NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART))) 231 domain |= NOUVEAU_GEM_DOMAIN_CPU; 232 233 nvbo = nouveau_bo_alloc(cli, &size, &align, domain, tile_mode, 234 tile_flags); 235 if (IS_ERR(nvbo)) 236 return PTR_ERR(nvbo); 237 238 nvbo->bo.base.funcs = &nouveau_gem_object_funcs; 239 240 /* Initialize the embedded gem-object. We return a single gem-reference 241 * to the caller, instead of a normal nouveau_bo ttm reference. */ 242 ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size); 243 if (ret) { 244 drm_gem_object_release(&nvbo->bo.base); 245 kfree(nvbo); 246 return ret; 247 } 248 249 ret = nouveau_bo_init(nvbo, size, align, domain, NULL, NULL); 250 if (ret) 251 return ret; 252 253 /* we restrict allowed domains on nv50+ to only the types 254 * that were requested at creation time. not possibly on 255 * earlier chips without busting the ABI. 256 */ 257 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM | 258 NOUVEAU_GEM_DOMAIN_GART; 259 if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA) 260 nvbo->valid_domains &= domain; 261 262 *pnvbo = nvbo; 263 return 0; 264 } 265 266 static int 267 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem, 268 struct drm_nouveau_gem_info *rep) 269 { 270 struct nouveau_cli *cli = nouveau_cli(file_priv); 271 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 272 struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm; 273 struct nouveau_vma *vma; 274 275 if (is_power_of_2(nvbo->valid_domains)) 276 rep->domain = nvbo->valid_domains; 277 else if (nvbo->bo.resource->mem_type == TTM_PL_TT) 278 rep->domain = NOUVEAU_GEM_DOMAIN_GART; 279 else 280 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM; 281 rep->offset = nvbo->offset; 282 if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) { 283 vma = nouveau_vma_find(nvbo, vmm); 284 if (!vma) 285 return -EINVAL; 286 287 rep->offset = vma->addr; 288 } 289 290 rep->size = nvbo->bo.base.size; 291 rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node); 292 rep->tile_mode = nvbo->mode; 293 rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG; 294 if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI) 295 rep->tile_flags |= nvbo->kind << 8; 296 else 297 if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA) 298 rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16; 299 else 300 rep->tile_flags |= nvbo->zeta; 301 return 0; 302 } 303 304 int 305 nouveau_gem_ioctl_new(struct drm_device *dev, void *data, 306 struct drm_file *file_priv) 307 { 308 struct nouveau_cli *cli = nouveau_cli(file_priv); 309 struct drm_nouveau_gem_new *req = data; 310 struct nouveau_bo *nvbo = NULL; 311 int ret = 0; 312 313 ret = nouveau_gem_new(cli, req->info.size, req->align, 314 req->info.domain, req->info.tile_mode, 315 req->info.tile_flags, &nvbo); 316 if (ret) 317 return ret; 318 319 ret = drm_gem_handle_create(file_priv, &nvbo->bo.base, 320 &req->info.handle); 321 if (ret == 0) { 322 ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info); 323 if (ret) 324 drm_gem_handle_delete(file_priv, req->info.handle); 325 } 326 327 /* drop reference from allocate - handle holds it now */ 328 drm_gem_object_put(&nvbo->bo.base); 329 return ret; 330 } 331 332 static int 333 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains, 334 uint32_t write_domains, uint32_t valid_domains) 335 { 336 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 337 struct ttm_buffer_object *bo = &nvbo->bo; 338 uint32_t domains = valid_domains & nvbo->valid_domains & 339 (write_domains ? write_domains : read_domains); 340 uint32_t pref_domains = 0; 341 342 if (!domains) 343 return -EINVAL; 344 345 valid_domains &= ~(NOUVEAU_GEM_DOMAIN_VRAM | NOUVEAU_GEM_DOMAIN_GART); 346 347 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) && 348 bo->resource->mem_type == TTM_PL_VRAM) 349 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM; 350 351 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) && 352 bo->resource->mem_type == TTM_PL_TT) 353 pref_domains |= NOUVEAU_GEM_DOMAIN_GART; 354 355 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM) 356 pref_domains |= NOUVEAU_GEM_DOMAIN_VRAM; 357 358 else 359 pref_domains |= NOUVEAU_GEM_DOMAIN_GART; 360 361 nouveau_bo_placement_set(nvbo, pref_domains, valid_domains); 362 363 return 0; 364 } 365 366 struct validate_op { 367 struct list_head list; 368 struct ww_acquire_ctx ticket; 369 }; 370 371 static void 372 validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan, 373 struct nouveau_fence *fence, 374 struct drm_nouveau_gem_pushbuf_bo *pbbo) 375 { 376 struct nouveau_bo *nvbo; 377 struct drm_nouveau_gem_pushbuf_bo *b; 378 379 while (!list_empty(&op->list)) { 380 nvbo = list_entry(op->list.next, struct nouveau_bo, entry); 381 b = &pbbo[nvbo->pbbo_index]; 382 383 if (likely(fence)) { 384 nouveau_bo_fence(nvbo, fence, !!b->write_domains); 385 386 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) { 387 struct nouveau_vma *vma = 388 (void *)(unsigned long)b->user_priv; 389 nouveau_fence_unref(&vma->fence); 390 dma_fence_get(&fence->base); 391 vma->fence = fence; 392 } 393 } 394 395 if (unlikely(nvbo->validate_mapped)) { 396 ttm_bo_kunmap(&nvbo->kmap); 397 nvbo->validate_mapped = false; 398 } 399 400 list_del(&nvbo->entry); 401 nvbo->reserved_by = NULL; 402 ttm_bo_unreserve(&nvbo->bo); 403 drm_gem_object_put(&nvbo->bo.base); 404 } 405 } 406 407 static void 408 validate_fini(struct validate_op *op, struct nouveau_channel *chan, 409 struct nouveau_fence *fence, 410 struct drm_nouveau_gem_pushbuf_bo *pbbo) 411 { 412 validate_fini_no_ticket(op, chan, fence, pbbo); 413 ww_acquire_fini(&op->ticket); 414 } 415 416 static int 417 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, 418 struct drm_nouveau_gem_pushbuf_bo *pbbo, 419 int nr_buffers, struct validate_op *op) 420 { 421 struct nouveau_cli *cli = nouveau_cli(file_priv); 422 int trycnt = 0; 423 int ret = -EINVAL, i; 424 struct nouveau_bo *res_bo = NULL; 425 LIST_HEAD(gart_list); 426 LIST_HEAD(vram_list); 427 LIST_HEAD(both_list); 428 429 ww_acquire_init(&op->ticket, &reservation_ww_class); 430 retry: 431 if (++trycnt > 100000) { 432 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__); 433 return -EINVAL; 434 } 435 436 for (i = 0; i < nr_buffers; i++) { 437 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i]; 438 struct drm_gem_object *gem; 439 struct nouveau_bo *nvbo; 440 441 gem = drm_gem_object_lookup(file_priv, b->handle); 442 if (!gem) { 443 NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle); 444 ret = -ENOENT; 445 break; 446 } 447 nvbo = nouveau_gem_object(gem); 448 if (nvbo == res_bo) { 449 res_bo = NULL; 450 drm_gem_object_put(gem); 451 continue; 452 } 453 454 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) { 455 NV_PRINTK(err, cli, "multiple instances of buffer %d on " 456 "validation list\n", b->handle); 457 drm_gem_object_put(gem); 458 ret = -EINVAL; 459 break; 460 } 461 462 ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket); 463 if (ret) { 464 list_splice_tail_init(&vram_list, &op->list); 465 list_splice_tail_init(&gart_list, &op->list); 466 list_splice_tail_init(&both_list, &op->list); 467 validate_fini_no_ticket(op, chan, NULL, NULL); 468 if (unlikely(ret == -EDEADLK)) { 469 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true, 470 &op->ticket); 471 if (!ret) 472 res_bo = nvbo; 473 } 474 if (unlikely(ret)) { 475 if (ret != -ERESTARTSYS) 476 NV_PRINTK(err, cli, "fail reserve\n"); 477 break; 478 } 479 } 480 481 if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) { 482 struct nouveau_vmm *vmm = chan->vmm; 483 struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm); 484 if (!vma) { 485 NV_PRINTK(err, cli, "vma not found!\n"); 486 ret = -EINVAL; 487 break; 488 } 489 490 b->user_priv = (uint64_t)(unsigned long)vma; 491 } else { 492 b->user_priv = (uint64_t)(unsigned long)nvbo; 493 } 494 495 nvbo->reserved_by = file_priv; 496 nvbo->pbbo_index = i; 497 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 498 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)) 499 list_add_tail(&nvbo->entry, &both_list); 500 else 501 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) 502 list_add_tail(&nvbo->entry, &vram_list); 503 else 504 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART) 505 list_add_tail(&nvbo->entry, &gart_list); 506 else { 507 NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n", 508 b->valid_domains); 509 list_add_tail(&nvbo->entry, &both_list); 510 ret = -EINVAL; 511 break; 512 } 513 if (nvbo == res_bo) 514 goto retry; 515 } 516 517 ww_acquire_done(&op->ticket); 518 list_splice_tail(&vram_list, &op->list); 519 list_splice_tail(&gart_list, &op->list); 520 list_splice_tail(&both_list, &op->list); 521 if (ret) 522 validate_fini(op, chan, NULL, NULL); 523 return ret; 524 525 } 526 527 static int 528 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli, 529 struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo) 530 { 531 struct nouveau_drm *drm = chan->drm; 532 struct nouveau_bo *nvbo; 533 int ret, relocs = 0; 534 535 list_for_each_entry(nvbo, list, entry) { 536 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index]; 537 538 ret = nouveau_gem_set_domain(&nvbo->bo.base, b->read_domains, 539 b->write_domains, 540 b->valid_domains); 541 if (unlikely(ret)) { 542 NV_PRINTK(err, cli, "fail set_domain\n"); 543 return ret; 544 } 545 546 ret = nouveau_bo_validate(nvbo, true, false); 547 if (unlikely(ret)) { 548 if (ret != -ERESTARTSYS) 549 NV_PRINTK(err, cli, "fail ttm_validate\n"); 550 return ret; 551 } 552 553 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true); 554 if (unlikely(ret)) { 555 if (ret != -ERESTARTSYS) 556 NV_PRINTK(err, cli, "fail post-validate sync\n"); 557 return ret; 558 } 559 560 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { 561 if (nvbo->offset == b->presumed.offset && 562 ((nvbo->bo.resource->mem_type == TTM_PL_VRAM && 563 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) || 564 (nvbo->bo.resource->mem_type == TTM_PL_TT && 565 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART))) 566 continue; 567 568 if (nvbo->bo.resource->mem_type == TTM_PL_TT) 569 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART; 570 else 571 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM; 572 b->presumed.offset = nvbo->offset; 573 b->presumed.valid = 0; 574 relocs++; 575 } 576 } 577 578 return relocs; 579 } 580 581 static int 582 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan, 583 struct drm_file *file_priv, 584 struct drm_nouveau_gem_pushbuf_bo *pbbo, 585 int nr_buffers, 586 struct validate_op *op, bool *apply_relocs) 587 { 588 struct nouveau_cli *cli = nouveau_cli(file_priv); 589 int ret; 590 591 INIT_LIST_HEAD(&op->list); 592 593 if (nr_buffers == 0) 594 return 0; 595 596 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op); 597 if (unlikely(ret)) { 598 if (ret != -ERESTARTSYS) 599 NV_PRINTK(err, cli, "validate_init\n"); 600 return ret; 601 } 602 603 ret = validate_list(chan, cli, &op->list, pbbo); 604 if (unlikely(ret < 0)) { 605 if (ret != -ERESTARTSYS) 606 NV_PRINTK(err, cli, "validating bo list\n"); 607 validate_fini(op, chan, NULL, NULL); 608 return ret; 609 } else if (ret > 0) { 610 *apply_relocs = true; 611 } 612 613 return 0; 614 } 615 616 static inline void 617 u_free(void *addr) 618 { 619 kvfree(addr); 620 } 621 622 static inline void * 623 u_memcpya(uint64_t user, unsigned nmemb, unsigned size) 624 { 625 void *mem; 626 void __user *userptr = (void __force __user *)(uintptr_t)user; 627 628 size *= nmemb; 629 630 mem = kvmalloc(size, GFP_KERNEL); 631 if (!mem) 632 return ERR_PTR(-ENOMEM); 633 634 if (copy_from_user(mem, userptr, size)) { 635 u_free(mem); 636 return ERR_PTR(-EFAULT); 637 } 638 639 return mem; 640 } 641 642 static int 643 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli, 644 struct drm_nouveau_gem_pushbuf *req, 645 struct drm_nouveau_gem_pushbuf_reloc *reloc, 646 struct drm_nouveau_gem_pushbuf_bo *bo) 647 { 648 int ret = 0; 649 unsigned i; 650 651 for (i = 0; i < req->nr_relocs; i++) { 652 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i]; 653 struct drm_nouveau_gem_pushbuf_bo *b; 654 struct nouveau_bo *nvbo; 655 uint32_t data; 656 long lret; 657 658 if (unlikely(r->bo_index >= req->nr_buffers)) { 659 NV_PRINTK(err, cli, "reloc bo index invalid\n"); 660 ret = -EINVAL; 661 break; 662 } 663 664 b = &bo[r->bo_index]; 665 if (b->presumed.valid) 666 continue; 667 668 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) { 669 NV_PRINTK(err, cli, "reloc container bo index invalid\n"); 670 ret = -EINVAL; 671 break; 672 } 673 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv; 674 675 if (unlikely(r->reloc_bo_offset + 4 > 676 nvbo->bo.base.size)) { 677 NV_PRINTK(err, cli, "reloc outside of bo\n"); 678 ret = -EINVAL; 679 break; 680 } 681 682 if (!nvbo->kmap.virtual) { 683 ret = ttm_bo_kmap(&nvbo->bo, 0, PFN_UP(nvbo->bo.base.size), 684 &nvbo->kmap); 685 if (ret) { 686 NV_PRINTK(err, cli, "failed kmap for reloc\n"); 687 break; 688 } 689 nvbo->validate_mapped = true; 690 } 691 692 if (r->flags & NOUVEAU_GEM_RELOC_LOW) 693 data = b->presumed.offset + r->data; 694 else 695 if (r->flags & NOUVEAU_GEM_RELOC_HIGH) 696 data = (b->presumed.offset + r->data) >> 32; 697 else 698 data = r->data; 699 700 if (r->flags & NOUVEAU_GEM_RELOC_OR) { 701 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART) 702 data |= r->tor; 703 else 704 data |= r->vor; 705 } 706 707 lret = dma_resv_wait_timeout(nvbo->bo.base.resv, 708 DMA_RESV_USAGE_BOOKKEEP, 709 false, 15 * HZ); 710 if (!lret) 711 ret = -EBUSY; 712 else if (lret > 0) 713 ret = 0; 714 else 715 ret = lret; 716 717 if (ret) { 718 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", 719 ret); 720 break; 721 } 722 723 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data); 724 } 725 726 return ret; 727 } 728 729 int 730 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, 731 struct drm_file *file_priv) 732 { 733 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv); 734 struct nouveau_cli *cli = nouveau_cli(file_priv); 735 struct nouveau_abi16_chan *temp; 736 struct nouveau_drm *drm = nouveau_drm(dev); 737 struct drm_nouveau_gem_pushbuf *req = data; 738 struct drm_nouveau_gem_pushbuf_push *push; 739 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL; 740 struct drm_nouveau_gem_pushbuf_bo *bo; 741 struct nouveau_channel *chan = NULL; 742 struct validate_op op; 743 struct nouveau_fence *fence = NULL; 744 int i, j, ret = 0; 745 bool do_reloc = false, sync = false; 746 747 if (unlikely(!abi16)) 748 return -ENOMEM; 749 750 list_for_each_entry(temp, &abi16->channels, head) { 751 if (temp->chan->chid == req->channel) { 752 chan = temp->chan; 753 break; 754 } 755 } 756 757 if (!chan) 758 return nouveau_abi16_put(abi16, -ENOENT); 759 if (unlikely(atomic_read(&chan->killed))) 760 return nouveau_abi16_put(abi16, -ENODEV); 761 762 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC; 763 764 req->vram_available = drm->gem.vram_available; 765 req->gart_available = drm->gem.gart_available; 766 if (unlikely(req->nr_push == 0)) 767 goto out_next; 768 769 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) { 770 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n", 771 req->nr_push, NOUVEAU_GEM_MAX_PUSH); 772 return nouveau_abi16_put(abi16, -EINVAL); 773 } 774 775 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) { 776 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n", 777 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS); 778 return nouveau_abi16_put(abi16, -EINVAL); 779 } 780 781 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) { 782 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n", 783 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS); 784 return nouveau_abi16_put(abi16, -EINVAL); 785 } 786 787 push = u_memcpya(req->push, req->nr_push, sizeof(*push)); 788 if (IS_ERR(push)) 789 return nouveau_abi16_put(abi16, PTR_ERR(push)); 790 791 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); 792 if (IS_ERR(bo)) { 793 u_free(push); 794 return nouveau_abi16_put(abi16, PTR_ERR(bo)); 795 } 796 797 /* Ensure all push buffers are on validate list */ 798 for (i = 0; i < req->nr_push; i++) { 799 if (push[i].bo_index >= req->nr_buffers) { 800 NV_PRINTK(err, cli, "push %d buffer not in list\n", i); 801 ret = -EINVAL; 802 goto out_prevalid; 803 } 804 } 805 806 /* Validate buffer list */ 807 revalidate: 808 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, 809 req->nr_buffers, &op, &do_reloc); 810 if (ret) { 811 if (ret != -ERESTARTSYS) 812 NV_PRINTK(err, cli, "validate: %d\n", ret); 813 goto out_prevalid; 814 } 815 816 /* Apply any relocations that are required */ 817 if (do_reloc) { 818 if (!reloc) { 819 validate_fini(&op, chan, NULL, bo); 820 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc)); 821 if (IS_ERR(reloc)) { 822 ret = PTR_ERR(reloc); 823 goto out_prevalid; 824 } 825 826 goto revalidate; 827 } 828 829 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo); 830 if (ret) { 831 NV_PRINTK(err, cli, "reloc apply: %d\n", ret); 832 goto out; 833 } 834 } 835 836 if (chan->dma.ib_max) { 837 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16); 838 if (ret) { 839 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret); 840 goto out; 841 } 842 843 for (i = 0; i < req->nr_push; i++) { 844 struct nouveau_vma *vma = (void *)(unsigned long) 845 bo[push[i].bo_index].user_priv; 846 847 nv50_dma_push(chan, vma->addr + push[i].offset, 848 push[i].length); 849 } 850 } else 851 if (drm->client.device.info.chipset >= 0x25) { 852 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2); 853 if (ret) { 854 NV_PRINTK(err, cli, "cal_space: %d\n", ret); 855 goto out; 856 } 857 858 for (i = 0; i < req->nr_push; i++) { 859 struct nouveau_bo *nvbo = (void *)(unsigned long) 860 bo[push[i].bo_index].user_priv; 861 862 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset); 863 PUSH_DATA(chan->chan.push, 0); 864 } 865 } else { 866 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS)); 867 if (ret) { 868 NV_PRINTK(err, cli, "jmp_space: %d\n", ret); 869 goto out; 870 } 871 872 for (i = 0; i < req->nr_push; i++) { 873 struct nouveau_bo *nvbo = (void *)(unsigned long) 874 bo[push[i].bo_index].user_priv; 875 uint32_t cmd; 876 877 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2); 878 cmd |= 0x20000000; 879 if (unlikely(cmd != req->suffix0)) { 880 if (!nvbo->kmap.virtual) { 881 ret = ttm_bo_kmap(&nvbo->bo, 0, 882 PFN_UP(nvbo->bo.base.size), 883 &nvbo->kmap); 884 if (ret) { 885 WIND_RING(chan); 886 goto out; 887 } 888 nvbo->validate_mapped = true; 889 } 890 891 nouveau_bo_wr32(nvbo, (push[i].offset + 892 push[i].length - 8) / 4, cmd); 893 } 894 895 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset); 896 PUSH_DATA(chan->chan.push, 0); 897 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++) 898 PUSH_DATA(chan->chan.push, 0); 899 } 900 } 901 902 ret = nouveau_fence_new(chan, false, &fence); 903 if (ret) { 904 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret); 905 WIND_RING(chan); 906 goto out; 907 } 908 909 if (sync) { 910 if (!(ret = nouveau_fence_wait(fence, false, false))) { 911 if ((ret = dma_fence_get_status(&fence->base)) == 1) 912 ret = 0; 913 } 914 } 915 916 out: 917 validate_fini(&op, chan, fence, bo); 918 nouveau_fence_unref(&fence); 919 920 if (do_reloc) { 921 struct drm_nouveau_gem_pushbuf_bo __user *upbbo = 922 u64_to_user_ptr(req->buffers); 923 924 for (i = 0; i < req->nr_buffers; i++) { 925 if (bo[i].presumed.valid) 926 continue; 927 928 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed, 929 sizeof(bo[i].presumed))) { 930 ret = -EFAULT; 931 break; 932 } 933 } 934 } 935 out_prevalid: 936 if (!IS_ERR(reloc)) 937 u_free(reloc); 938 u_free(bo); 939 u_free(push); 940 941 out_next: 942 if (chan->dma.ib_max) { 943 req->suffix0 = 0x00000000; 944 req->suffix1 = 0x00000000; 945 } else 946 if (drm->client.device.info.chipset >= 0x25) { 947 req->suffix0 = 0x00020000; 948 req->suffix1 = 0x00000000; 949 } else { 950 req->suffix0 = 0x20000000 | 951 (chan->push.addr + ((chan->dma.cur + 2) << 2)); 952 req->suffix1 = 0x00000000; 953 } 954 955 return nouveau_abi16_put(abi16, ret); 956 } 957 958 int 959 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, 960 struct drm_file *file_priv) 961 { 962 struct drm_nouveau_gem_cpu_prep *req = data; 963 struct drm_gem_object *gem; 964 struct nouveau_bo *nvbo; 965 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT); 966 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE); 967 long lret; 968 int ret; 969 970 gem = drm_gem_object_lookup(file_priv, req->handle); 971 if (!gem) 972 return -ENOENT; 973 nvbo = nouveau_gem_object(gem); 974 975 lret = dma_resv_wait_timeout(nvbo->bo.base.resv, 976 dma_resv_usage_rw(write), true, 977 no_wait ? 0 : 30 * HZ); 978 if (!lret) 979 ret = -EBUSY; 980 else if (lret > 0) 981 ret = 0; 982 else 983 ret = lret; 984 985 nouveau_bo_sync_for_cpu(nvbo); 986 drm_gem_object_put(gem); 987 988 return ret; 989 } 990 991 int 992 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data, 993 struct drm_file *file_priv) 994 { 995 struct drm_nouveau_gem_cpu_fini *req = data; 996 struct drm_gem_object *gem; 997 struct nouveau_bo *nvbo; 998 999 gem = drm_gem_object_lookup(file_priv, req->handle); 1000 if (!gem) 1001 return -ENOENT; 1002 nvbo = nouveau_gem_object(gem); 1003 1004 nouveau_bo_sync_for_device(nvbo); 1005 drm_gem_object_put(gem); 1006 return 0; 1007 } 1008 1009 int 1010 nouveau_gem_ioctl_info(struct drm_device *dev, void *data, 1011 struct drm_file *file_priv) 1012 { 1013 struct drm_nouveau_gem_info *req = data; 1014 struct drm_gem_object *gem; 1015 int ret; 1016 1017 gem = drm_gem_object_lookup(file_priv, req->handle); 1018 if (!gem) 1019 return -ENOENT; 1020 1021 ret = nouveau_gem_info(file_priv, gem, req); 1022 drm_gem_object_put(gem); 1023 return ret; 1024 } 1025 1026