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; 656 657 if (unlikely(r->bo_index >= req->nr_buffers)) { 658 NV_PRINTK(err, cli, "reloc bo index invalid\n"); 659 ret = -EINVAL; 660 break; 661 } 662 663 b = &bo[r->bo_index]; 664 if (b->presumed.valid) 665 continue; 666 667 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) { 668 NV_PRINTK(err, cli, "reloc container bo index invalid\n"); 669 ret = -EINVAL; 670 break; 671 } 672 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv; 673 674 if (unlikely(r->reloc_bo_offset + 4 > 675 nvbo->bo.base.size)) { 676 NV_PRINTK(err, cli, "reloc outside of bo\n"); 677 ret = -EINVAL; 678 break; 679 } 680 681 if (!nvbo->kmap.virtual) { 682 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.resource->num_pages, 683 &nvbo->kmap); 684 if (ret) { 685 NV_PRINTK(err, cli, "failed kmap for reloc\n"); 686 break; 687 } 688 nvbo->validate_mapped = true; 689 } 690 691 if (r->flags & NOUVEAU_GEM_RELOC_LOW) 692 data = b->presumed.offset + r->data; 693 else 694 if (r->flags & NOUVEAU_GEM_RELOC_HIGH) 695 data = (b->presumed.offset + r->data) >> 32; 696 else 697 data = r->data; 698 699 if (r->flags & NOUVEAU_GEM_RELOC_OR) { 700 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART) 701 data |= r->tor; 702 else 703 data |= r->vor; 704 } 705 706 ret = ttm_bo_wait(&nvbo->bo, false, false); 707 if (ret) { 708 NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret); 709 break; 710 } 711 712 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data); 713 } 714 715 return ret; 716 } 717 718 int 719 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, 720 struct drm_file *file_priv) 721 { 722 struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv); 723 struct nouveau_cli *cli = nouveau_cli(file_priv); 724 struct nouveau_abi16_chan *temp; 725 struct nouveau_drm *drm = nouveau_drm(dev); 726 struct drm_nouveau_gem_pushbuf *req = data; 727 struct drm_nouveau_gem_pushbuf_push *push; 728 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL; 729 struct drm_nouveau_gem_pushbuf_bo *bo; 730 struct nouveau_channel *chan = NULL; 731 struct validate_op op; 732 struct nouveau_fence *fence = NULL; 733 int i, j, ret = 0; 734 bool do_reloc = false, sync = false; 735 736 if (unlikely(!abi16)) 737 return -ENOMEM; 738 739 list_for_each_entry(temp, &abi16->channels, head) { 740 if (temp->chan->chid == req->channel) { 741 chan = temp->chan; 742 break; 743 } 744 } 745 746 if (!chan) 747 return nouveau_abi16_put(abi16, -ENOENT); 748 if (unlikely(atomic_read(&chan->killed))) 749 return nouveau_abi16_put(abi16, -ENODEV); 750 751 sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC; 752 753 req->vram_available = drm->gem.vram_available; 754 req->gart_available = drm->gem.gart_available; 755 if (unlikely(req->nr_push == 0)) 756 goto out_next; 757 758 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) { 759 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n", 760 req->nr_push, NOUVEAU_GEM_MAX_PUSH); 761 return nouveau_abi16_put(abi16, -EINVAL); 762 } 763 764 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) { 765 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n", 766 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS); 767 return nouveau_abi16_put(abi16, -EINVAL); 768 } 769 770 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) { 771 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n", 772 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS); 773 return nouveau_abi16_put(abi16, -EINVAL); 774 } 775 776 push = u_memcpya(req->push, req->nr_push, sizeof(*push)); 777 if (IS_ERR(push)) 778 return nouveau_abi16_put(abi16, PTR_ERR(push)); 779 780 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); 781 if (IS_ERR(bo)) { 782 u_free(push); 783 return nouveau_abi16_put(abi16, PTR_ERR(bo)); 784 } 785 786 /* Ensure all push buffers are on validate list */ 787 for (i = 0; i < req->nr_push; i++) { 788 if (push[i].bo_index >= req->nr_buffers) { 789 NV_PRINTK(err, cli, "push %d buffer not in list\n", i); 790 ret = -EINVAL; 791 goto out_prevalid; 792 } 793 } 794 795 /* Validate buffer list */ 796 revalidate: 797 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, 798 req->nr_buffers, &op, &do_reloc); 799 if (ret) { 800 if (ret != -ERESTARTSYS) 801 NV_PRINTK(err, cli, "validate: %d\n", ret); 802 goto out_prevalid; 803 } 804 805 /* Apply any relocations that are required */ 806 if (do_reloc) { 807 if (!reloc) { 808 validate_fini(&op, chan, NULL, bo); 809 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc)); 810 if (IS_ERR(reloc)) { 811 ret = PTR_ERR(reloc); 812 goto out_prevalid; 813 } 814 815 goto revalidate; 816 } 817 818 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo); 819 if (ret) { 820 NV_PRINTK(err, cli, "reloc apply: %d\n", ret); 821 goto out; 822 } 823 } 824 825 if (chan->dma.ib_max) { 826 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16); 827 if (ret) { 828 NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret); 829 goto out; 830 } 831 832 for (i = 0; i < req->nr_push; i++) { 833 struct nouveau_vma *vma = (void *)(unsigned long) 834 bo[push[i].bo_index].user_priv; 835 836 nv50_dma_push(chan, vma->addr + push[i].offset, 837 push[i].length); 838 } 839 } else 840 if (drm->client.device.info.chipset >= 0x25) { 841 ret = PUSH_WAIT(chan->chan.push, req->nr_push * 2); 842 if (ret) { 843 NV_PRINTK(err, cli, "cal_space: %d\n", ret); 844 goto out; 845 } 846 847 for (i = 0; i < req->nr_push; i++) { 848 struct nouveau_bo *nvbo = (void *)(unsigned long) 849 bo[push[i].bo_index].user_priv; 850 851 PUSH_CALL(chan->chan.push, nvbo->offset + push[i].offset); 852 PUSH_DATA(chan->chan.push, 0); 853 } 854 } else { 855 ret = PUSH_WAIT(chan->chan.push, req->nr_push * (2 + NOUVEAU_DMA_SKIPS)); 856 if (ret) { 857 NV_PRINTK(err, cli, "jmp_space: %d\n", ret); 858 goto out; 859 } 860 861 for (i = 0; i < req->nr_push; i++) { 862 struct nouveau_bo *nvbo = (void *)(unsigned long) 863 bo[push[i].bo_index].user_priv; 864 uint32_t cmd; 865 866 cmd = chan->push.addr + ((chan->dma.cur + 2) << 2); 867 cmd |= 0x20000000; 868 if (unlikely(cmd != req->suffix0)) { 869 if (!nvbo->kmap.virtual) { 870 ret = ttm_bo_kmap(&nvbo->bo, 0, 871 nvbo->bo.resource-> 872 num_pages, 873 &nvbo->kmap); 874 if (ret) { 875 WIND_RING(chan); 876 goto out; 877 } 878 nvbo->validate_mapped = true; 879 } 880 881 nouveau_bo_wr32(nvbo, (push[i].offset + 882 push[i].length - 8) / 4, cmd); 883 } 884 885 PUSH_JUMP(chan->chan.push, nvbo->offset + push[i].offset); 886 PUSH_DATA(chan->chan.push, 0); 887 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++) 888 PUSH_DATA(chan->chan.push, 0); 889 } 890 } 891 892 ret = nouveau_fence_new(chan, false, &fence); 893 if (ret) { 894 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret); 895 WIND_RING(chan); 896 goto out; 897 } 898 899 if (sync) { 900 if (!(ret = nouveau_fence_wait(fence, false, false))) { 901 if ((ret = dma_fence_get_status(&fence->base)) == 1) 902 ret = 0; 903 } 904 } 905 906 out: 907 validate_fini(&op, chan, fence, bo); 908 nouveau_fence_unref(&fence); 909 910 if (do_reloc) { 911 struct drm_nouveau_gem_pushbuf_bo __user *upbbo = 912 u64_to_user_ptr(req->buffers); 913 914 for (i = 0; i < req->nr_buffers; i++) { 915 if (bo[i].presumed.valid) 916 continue; 917 918 if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed, 919 sizeof(bo[i].presumed))) { 920 ret = -EFAULT; 921 break; 922 } 923 } 924 } 925 out_prevalid: 926 if (!IS_ERR(reloc)) 927 u_free(reloc); 928 u_free(bo); 929 u_free(push); 930 931 out_next: 932 if (chan->dma.ib_max) { 933 req->suffix0 = 0x00000000; 934 req->suffix1 = 0x00000000; 935 } else 936 if (drm->client.device.info.chipset >= 0x25) { 937 req->suffix0 = 0x00020000; 938 req->suffix1 = 0x00000000; 939 } else { 940 req->suffix0 = 0x20000000 | 941 (chan->push.addr + ((chan->dma.cur + 2) << 2)); 942 req->suffix1 = 0x00000000; 943 } 944 945 return nouveau_abi16_put(abi16, ret); 946 } 947 948 int 949 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, 950 struct drm_file *file_priv) 951 { 952 struct drm_nouveau_gem_cpu_prep *req = data; 953 struct drm_gem_object *gem; 954 struct nouveau_bo *nvbo; 955 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT); 956 bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE); 957 long lret; 958 int ret; 959 960 gem = drm_gem_object_lookup(file_priv, req->handle); 961 if (!gem) 962 return -ENOENT; 963 nvbo = nouveau_gem_object(gem); 964 965 lret = dma_resv_wait_timeout(nvbo->bo.base.resv, write, true, 966 no_wait ? 0 : 30 * HZ); 967 if (!lret) 968 ret = -EBUSY; 969 else if (lret > 0) 970 ret = 0; 971 else 972 ret = lret; 973 974 nouveau_bo_sync_for_cpu(nvbo); 975 drm_gem_object_put(gem); 976 977 return ret; 978 } 979 980 int 981 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data, 982 struct drm_file *file_priv) 983 { 984 struct drm_nouveau_gem_cpu_fini *req = data; 985 struct drm_gem_object *gem; 986 struct nouveau_bo *nvbo; 987 988 gem = drm_gem_object_lookup(file_priv, req->handle); 989 if (!gem) 990 return -ENOENT; 991 nvbo = nouveau_gem_object(gem); 992 993 nouveau_bo_sync_for_device(nvbo); 994 drm_gem_object_put(gem); 995 return 0; 996 } 997 998 int 999 nouveau_gem_ioctl_info(struct drm_device *dev, void *data, 1000 struct drm_file *file_priv) 1001 { 1002 struct drm_nouveau_gem_info *req = data; 1003 struct drm_gem_object *gem; 1004 int ret; 1005 1006 gem = drm_gem_object_lookup(file_priv, req->handle); 1007 if (!gem) 1008 return -ENOENT; 1009 1010 ret = nouveau_gem_info(file_priv, gem, req); 1011 drm_gem_object_put(gem); 1012 return ret; 1013 } 1014 1015