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 #include "drmP.h" 27 #include "drm.h" 28 29 #include "nouveau_drv.h" 30 #include "nouveau_drm.h" 31 #include "nouveau_dma.h" 32 33 #define nouveau_gem_pushbuf_sync(chan) 0 34 35 int 36 nouveau_gem_object_new(struct drm_gem_object *gem) 37 { 38 return 0; 39 } 40 41 void 42 nouveau_gem_object_del(struct drm_gem_object *gem) 43 { 44 struct nouveau_bo *nvbo = gem->driver_private; 45 struct ttm_buffer_object *bo = &nvbo->bo; 46 47 if (!nvbo) 48 return; 49 nvbo->gem = NULL; 50 51 if (unlikely(nvbo->pin_refcnt)) { 52 nvbo->pin_refcnt = 1; 53 nouveau_bo_unpin(nvbo); 54 } 55 56 ttm_bo_unref(&bo); 57 58 drm_gem_object_release(gem); 59 kfree(gem); 60 } 61 62 int 63 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv) 64 { 65 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv); 66 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 67 struct nouveau_vma *vma; 68 int ret; 69 70 if (!fpriv->vm) 71 return 0; 72 73 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0); 74 if (ret) 75 return ret; 76 77 vma = nouveau_bo_vma_find(nvbo, fpriv->vm); 78 if (!vma) { 79 vma = kzalloc(sizeof(*vma), GFP_KERNEL); 80 if (!vma) { 81 ret = -ENOMEM; 82 goto out; 83 } 84 85 ret = nouveau_bo_vma_add(nvbo, fpriv->vm, vma); 86 if (ret) { 87 kfree(vma); 88 goto out; 89 } 90 } else { 91 vma->refcount++; 92 } 93 94 out: 95 ttm_bo_unreserve(&nvbo->bo); 96 return ret; 97 } 98 99 void 100 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv) 101 { 102 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv); 103 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 104 struct nouveau_vma *vma; 105 int ret; 106 107 if (!fpriv->vm) 108 return; 109 110 ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0); 111 if (ret) 112 return; 113 114 vma = nouveau_bo_vma_find(nvbo, fpriv->vm); 115 if (vma) { 116 if (--vma->refcount == 0) { 117 nouveau_bo_vma_del(nvbo, vma); 118 kfree(vma); 119 } 120 } 121 ttm_bo_unreserve(&nvbo->bo); 122 } 123 124 int 125 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain, 126 uint32_t tile_mode, uint32_t tile_flags, 127 struct nouveau_bo **pnvbo) 128 { 129 struct drm_nouveau_private *dev_priv = dev->dev_private; 130 struct nouveau_bo *nvbo; 131 u32 flags = 0; 132 int ret; 133 134 if (domain & NOUVEAU_GEM_DOMAIN_VRAM) 135 flags |= TTM_PL_FLAG_VRAM; 136 if (domain & NOUVEAU_GEM_DOMAIN_GART) 137 flags |= TTM_PL_FLAG_TT; 138 if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU) 139 flags |= TTM_PL_FLAG_SYSTEM; 140 141 ret = nouveau_bo_new(dev, size, align, flags, tile_mode, 142 tile_flags, pnvbo); 143 if (ret) 144 return ret; 145 nvbo = *pnvbo; 146 147 /* we restrict allowed domains on nv50+ to only the types 148 * that were requested at creation time. not possibly on 149 * earlier chips without busting the ABI. 150 */ 151 nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM | 152 NOUVEAU_GEM_DOMAIN_GART; 153 if (dev_priv->card_type >= NV_50) 154 nvbo->valid_domains &= domain; 155 156 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size); 157 if (!nvbo->gem) { 158 nouveau_bo_ref(NULL, pnvbo); 159 return -ENOMEM; 160 } 161 162 nvbo->bo.persistent_swap_storage = nvbo->gem->filp; 163 nvbo->gem->driver_private = nvbo; 164 return 0; 165 } 166 167 static int 168 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem, 169 struct drm_nouveau_gem_info *rep) 170 { 171 struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv); 172 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 173 struct nouveau_vma *vma; 174 175 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 176 rep->domain = NOUVEAU_GEM_DOMAIN_GART; 177 else 178 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM; 179 180 rep->offset = nvbo->bo.offset; 181 if (fpriv->vm) { 182 vma = nouveau_bo_vma_find(nvbo, fpriv->vm); 183 if (!vma) 184 return -EINVAL; 185 186 rep->offset = vma->offset; 187 } 188 189 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT; 190 rep->map_handle = nvbo->bo.addr_space_offset; 191 rep->tile_mode = nvbo->tile_mode; 192 rep->tile_flags = nvbo->tile_flags; 193 return 0; 194 } 195 196 int 197 nouveau_gem_ioctl_new(struct drm_device *dev, void *data, 198 struct drm_file *file_priv) 199 { 200 struct drm_nouveau_private *dev_priv = dev->dev_private; 201 struct drm_nouveau_gem_new *req = data; 202 struct nouveau_bo *nvbo = NULL; 203 int ret = 0; 204 205 if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL)) 206 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping; 207 208 if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) { 209 NV_ERROR(dev, "bad page flags: 0x%08x\n", req->info.tile_flags); 210 return -EINVAL; 211 } 212 213 ret = nouveau_gem_new(dev, req->info.size, req->align, 214 req->info.domain, req->info.tile_mode, 215 req->info.tile_flags, &nvbo); 216 if (ret) 217 return ret; 218 219 ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle); 220 if (ret == 0) { 221 ret = nouveau_gem_info(file_priv, nvbo->gem, &req->info); 222 if (ret) 223 drm_gem_handle_delete(file_priv, req->info.handle); 224 } 225 226 /* drop reference from allocate - handle holds it now */ 227 drm_gem_object_unreference_unlocked(nvbo->gem); 228 return ret; 229 } 230 231 static int 232 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains, 233 uint32_t write_domains, uint32_t valid_domains) 234 { 235 struct nouveau_bo *nvbo = gem->driver_private; 236 struct ttm_buffer_object *bo = &nvbo->bo; 237 uint32_t domains = valid_domains & nvbo->valid_domains & 238 (write_domains ? write_domains : read_domains); 239 uint32_t pref_flags = 0, valid_flags = 0; 240 241 if (!domains) 242 return -EINVAL; 243 244 if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) 245 valid_flags |= TTM_PL_FLAG_VRAM; 246 247 if (valid_domains & NOUVEAU_GEM_DOMAIN_GART) 248 valid_flags |= TTM_PL_FLAG_TT; 249 250 if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) && 251 bo->mem.mem_type == TTM_PL_VRAM) 252 pref_flags |= TTM_PL_FLAG_VRAM; 253 254 else if ((domains & NOUVEAU_GEM_DOMAIN_GART) && 255 bo->mem.mem_type == TTM_PL_TT) 256 pref_flags |= TTM_PL_FLAG_TT; 257 258 else if (domains & NOUVEAU_GEM_DOMAIN_VRAM) 259 pref_flags |= TTM_PL_FLAG_VRAM; 260 261 else 262 pref_flags |= TTM_PL_FLAG_TT; 263 264 nouveau_bo_placement_set(nvbo, pref_flags, valid_flags); 265 266 return 0; 267 } 268 269 struct validate_op { 270 struct list_head vram_list; 271 struct list_head gart_list; 272 struct list_head both_list; 273 }; 274 275 static void 276 validate_fini_list(struct list_head *list, struct nouveau_fence *fence) 277 { 278 struct list_head *entry, *tmp; 279 struct nouveau_bo *nvbo; 280 281 list_for_each_safe(entry, tmp, list) { 282 nvbo = list_entry(entry, struct nouveau_bo, entry); 283 284 nouveau_bo_fence(nvbo, fence); 285 286 if (unlikely(nvbo->validate_mapped)) { 287 ttm_bo_kunmap(&nvbo->kmap); 288 nvbo->validate_mapped = false; 289 } 290 291 list_del(&nvbo->entry); 292 nvbo->reserved_by = NULL; 293 ttm_bo_unreserve(&nvbo->bo); 294 drm_gem_object_unreference_unlocked(nvbo->gem); 295 } 296 } 297 298 static void 299 validate_fini(struct validate_op *op, struct nouveau_fence* fence) 300 { 301 validate_fini_list(&op->vram_list, fence); 302 validate_fini_list(&op->gart_list, fence); 303 validate_fini_list(&op->both_list, fence); 304 } 305 306 static int 307 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, 308 struct drm_nouveau_gem_pushbuf_bo *pbbo, 309 int nr_buffers, struct validate_op *op) 310 { 311 struct drm_device *dev = chan->dev; 312 struct drm_nouveau_private *dev_priv = dev->dev_private; 313 uint32_t sequence; 314 int trycnt = 0; 315 int ret, i; 316 317 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence); 318 retry: 319 if (++trycnt > 100000) { 320 NV_ERROR(dev, "%s failed and gave up.\n", __func__); 321 return -EINVAL; 322 } 323 324 for (i = 0; i < nr_buffers; i++) { 325 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i]; 326 struct drm_gem_object *gem; 327 struct nouveau_bo *nvbo; 328 329 gem = drm_gem_object_lookup(dev, file_priv, b->handle); 330 if (!gem) { 331 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle); 332 validate_fini(op, NULL); 333 return -ENOENT; 334 } 335 nvbo = gem->driver_private; 336 337 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) { 338 NV_ERROR(dev, "multiple instances of buffer %d on " 339 "validation list\n", b->handle); 340 validate_fini(op, NULL); 341 return -EINVAL; 342 } 343 344 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence); 345 if (ret) { 346 validate_fini(op, NULL); 347 if (unlikely(ret == -EAGAIN)) 348 ret = ttm_bo_wait_unreserved(&nvbo->bo, true); 349 drm_gem_object_unreference_unlocked(gem); 350 if (unlikely(ret)) { 351 if (ret != -ERESTARTSYS) 352 NV_ERROR(dev, "fail reserve\n"); 353 return ret; 354 } 355 goto retry; 356 } 357 358 b->user_priv = (uint64_t)(unsigned long)nvbo; 359 nvbo->reserved_by = file_priv; 360 nvbo->pbbo_index = i; 361 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 362 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)) 363 list_add_tail(&nvbo->entry, &op->both_list); 364 else 365 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) 366 list_add_tail(&nvbo->entry, &op->vram_list); 367 else 368 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART) 369 list_add_tail(&nvbo->entry, &op->gart_list); 370 else { 371 NV_ERROR(dev, "invalid valid domains: 0x%08x\n", 372 b->valid_domains); 373 list_add_tail(&nvbo->entry, &op->both_list); 374 validate_fini(op, NULL); 375 return -EINVAL; 376 } 377 } 378 379 return 0; 380 } 381 382 static int 383 validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo) 384 { 385 struct nouveau_fence *fence = NULL; 386 int ret = 0; 387 388 spin_lock(&nvbo->bo.bdev->fence_lock); 389 if (nvbo->bo.sync_obj) 390 fence = nouveau_fence_ref(nvbo->bo.sync_obj); 391 spin_unlock(&nvbo->bo.bdev->fence_lock); 392 393 if (fence) { 394 ret = nouveau_fence_sync(fence, chan); 395 nouveau_fence_unref(&fence); 396 } 397 398 return ret; 399 } 400 401 static int 402 validate_list(struct nouveau_channel *chan, struct list_head *list, 403 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr) 404 { 405 struct drm_nouveau_private *dev_priv = chan->dev->dev_private; 406 struct drm_nouveau_gem_pushbuf_bo __user *upbbo = 407 (void __force __user *)(uintptr_t)user_pbbo_ptr; 408 struct drm_device *dev = chan->dev; 409 struct nouveau_bo *nvbo; 410 int ret, relocs = 0; 411 412 list_for_each_entry(nvbo, list, entry) { 413 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index]; 414 415 ret = validate_sync(chan, nvbo); 416 if (unlikely(ret)) { 417 NV_ERROR(dev, "fail pre-validate sync\n"); 418 return ret; 419 } 420 421 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains, 422 b->write_domains, 423 b->valid_domains); 424 if (unlikely(ret)) { 425 NV_ERROR(dev, "fail set_domain\n"); 426 return ret; 427 } 428 429 ret = nouveau_bo_validate(nvbo, true, false, false); 430 if (unlikely(ret)) { 431 if (ret != -ERESTARTSYS) 432 NV_ERROR(dev, "fail ttm_validate\n"); 433 return ret; 434 } 435 436 ret = validate_sync(chan, nvbo); 437 if (unlikely(ret)) { 438 NV_ERROR(dev, "fail post-validate sync\n"); 439 return ret; 440 } 441 442 if (dev_priv->card_type < NV_50) { 443 if (nvbo->bo.offset == b->presumed.offset && 444 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM && 445 b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) || 446 (nvbo->bo.mem.mem_type == TTM_PL_TT && 447 b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART))) 448 continue; 449 450 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 451 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART; 452 else 453 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM; 454 b->presumed.offset = nvbo->bo.offset; 455 b->presumed.valid = 0; 456 relocs++; 457 458 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed, 459 &b->presumed, sizeof(b->presumed))) 460 return -EFAULT; 461 } 462 } 463 464 return relocs; 465 } 466 467 static int 468 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan, 469 struct drm_file *file_priv, 470 struct drm_nouveau_gem_pushbuf_bo *pbbo, 471 uint64_t user_buffers, int nr_buffers, 472 struct validate_op *op, int *apply_relocs) 473 { 474 struct drm_device *dev = chan->dev; 475 int ret, relocs = 0; 476 477 INIT_LIST_HEAD(&op->vram_list); 478 INIT_LIST_HEAD(&op->gart_list); 479 INIT_LIST_HEAD(&op->both_list); 480 481 if (nr_buffers == 0) 482 return 0; 483 484 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op); 485 if (unlikely(ret)) { 486 if (ret != -ERESTARTSYS) 487 NV_ERROR(dev, "validate_init\n"); 488 return ret; 489 } 490 491 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers); 492 if (unlikely(ret < 0)) { 493 if (ret != -ERESTARTSYS) 494 NV_ERROR(dev, "validate vram_list\n"); 495 validate_fini(op, NULL); 496 return ret; 497 } 498 relocs += ret; 499 500 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers); 501 if (unlikely(ret < 0)) { 502 if (ret != -ERESTARTSYS) 503 NV_ERROR(dev, "validate gart_list\n"); 504 validate_fini(op, NULL); 505 return ret; 506 } 507 relocs += ret; 508 509 ret = validate_list(chan, &op->both_list, pbbo, user_buffers); 510 if (unlikely(ret < 0)) { 511 if (ret != -ERESTARTSYS) 512 NV_ERROR(dev, "validate both_list\n"); 513 validate_fini(op, NULL); 514 return ret; 515 } 516 relocs += ret; 517 518 *apply_relocs = relocs; 519 return 0; 520 } 521 522 static inline void * 523 u_memcpya(uint64_t user, unsigned nmemb, unsigned size) 524 { 525 void *mem; 526 void __user *userptr = (void __force __user *)(uintptr_t)user; 527 528 mem = kmalloc(nmemb * size, GFP_KERNEL); 529 if (!mem) 530 return ERR_PTR(-ENOMEM); 531 532 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) { 533 kfree(mem); 534 return ERR_PTR(-EFAULT); 535 } 536 537 return mem; 538 } 539 540 static int 541 nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev, 542 struct drm_nouveau_gem_pushbuf *req, 543 struct drm_nouveau_gem_pushbuf_bo *bo) 544 { 545 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL; 546 int ret = 0; 547 unsigned i; 548 549 reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc)); 550 if (IS_ERR(reloc)) 551 return PTR_ERR(reloc); 552 553 for (i = 0; i < req->nr_relocs; i++) { 554 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i]; 555 struct drm_nouveau_gem_pushbuf_bo *b; 556 struct nouveau_bo *nvbo; 557 uint32_t data; 558 559 if (unlikely(r->bo_index > req->nr_buffers)) { 560 NV_ERROR(dev, "reloc bo index invalid\n"); 561 ret = -EINVAL; 562 break; 563 } 564 565 b = &bo[r->bo_index]; 566 if (b->presumed.valid) 567 continue; 568 569 if (unlikely(r->reloc_bo_index > req->nr_buffers)) { 570 NV_ERROR(dev, "reloc container bo index invalid\n"); 571 ret = -EINVAL; 572 break; 573 } 574 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv; 575 576 if (unlikely(r->reloc_bo_offset + 4 > 577 nvbo->bo.mem.num_pages << PAGE_SHIFT)) { 578 NV_ERROR(dev, "reloc outside of bo\n"); 579 ret = -EINVAL; 580 break; 581 } 582 583 if (!nvbo->kmap.virtual) { 584 ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, 585 &nvbo->kmap); 586 if (ret) { 587 NV_ERROR(dev, "failed kmap for reloc\n"); 588 break; 589 } 590 nvbo->validate_mapped = true; 591 } 592 593 if (r->flags & NOUVEAU_GEM_RELOC_LOW) 594 data = b->presumed.offset + r->data; 595 else 596 if (r->flags & NOUVEAU_GEM_RELOC_HIGH) 597 data = (b->presumed.offset + r->data) >> 32; 598 else 599 data = r->data; 600 601 if (r->flags & NOUVEAU_GEM_RELOC_OR) { 602 if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART) 603 data |= r->tor; 604 else 605 data |= r->vor; 606 } 607 608 spin_lock(&nvbo->bo.bdev->fence_lock); 609 ret = ttm_bo_wait(&nvbo->bo, false, false, false); 610 spin_unlock(&nvbo->bo.bdev->fence_lock); 611 if (ret) { 612 NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret); 613 break; 614 } 615 616 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data); 617 } 618 619 kfree(reloc); 620 return ret; 621 } 622 623 int 624 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, 625 struct drm_file *file_priv) 626 { 627 struct drm_nouveau_private *dev_priv = dev->dev_private; 628 struct drm_nouveau_gem_pushbuf *req = data; 629 struct drm_nouveau_gem_pushbuf_push *push; 630 struct drm_nouveau_gem_pushbuf_bo *bo; 631 struct nouveau_channel *chan; 632 struct validate_op op; 633 struct nouveau_fence *fence = NULL; 634 int i, j, ret = 0, do_reloc = 0; 635 636 chan = nouveau_channel_get(file_priv, req->channel); 637 if (IS_ERR(chan)) 638 return PTR_ERR(chan); 639 640 req->vram_available = dev_priv->fb_aper_free; 641 req->gart_available = dev_priv->gart_info.aper_free; 642 if (unlikely(req->nr_push == 0)) 643 goto out_next; 644 645 if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) { 646 NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n", 647 req->nr_push, NOUVEAU_GEM_MAX_PUSH); 648 nouveau_channel_put(&chan); 649 return -EINVAL; 650 } 651 652 if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) { 653 NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n", 654 req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS); 655 nouveau_channel_put(&chan); 656 return -EINVAL; 657 } 658 659 if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) { 660 NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n", 661 req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS); 662 nouveau_channel_put(&chan); 663 return -EINVAL; 664 } 665 666 push = u_memcpya(req->push, req->nr_push, sizeof(*push)); 667 if (IS_ERR(push)) { 668 nouveau_channel_put(&chan); 669 return PTR_ERR(push); 670 } 671 672 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); 673 if (IS_ERR(bo)) { 674 kfree(push); 675 nouveau_channel_put(&chan); 676 return PTR_ERR(bo); 677 } 678 679 /* Ensure all push buffers are on validate list */ 680 for (i = 0; i < req->nr_push; i++) { 681 if (push[i].bo_index >= req->nr_buffers) { 682 NV_ERROR(dev, "push %d buffer not in list\n", i); 683 ret = -EINVAL; 684 goto out_prevalid; 685 } 686 } 687 688 /* Validate buffer list */ 689 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers, 690 req->nr_buffers, &op, &do_reloc); 691 if (ret) { 692 if (ret != -ERESTARTSYS) 693 NV_ERROR(dev, "validate: %d\n", ret); 694 goto out_prevalid; 695 } 696 697 /* Apply any relocations that are required */ 698 if (do_reloc) { 699 ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo); 700 if (ret) { 701 NV_ERROR(dev, "reloc apply: %d\n", ret); 702 goto out; 703 } 704 } 705 706 if (chan->dma.ib_max) { 707 ret = nouveau_dma_wait(chan, req->nr_push + 1, 6); 708 if (ret) { 709 NV_INFO(dev, "nv50cal_space: %d\n", ret); 710 goto out; 711 } 712 713 for (i = 0; i < req->nr_push; i++) { 714 struct nouveau_bo *nvbo = (void *)(unsigned long) 715 bo[push[i].bo_index].user_priv; 716 717 nv50_dma_push(chan, nvbo, push[i].offset, 718 push[i].length); 719 } 720 } else 721 if (dev_priv->chipset >= 0x25) { 722 ret = RING_SPACE(chan, req->nr_push * 2); 723 if (ret) { 724 NV_ERROR(dev, "cal_space: %d\n", ret); 725 goto out; 726 } 727 728 for (i = 0; i < req->nr_push; i++) { 729 struct nouveau_bo *nvbo = (void *)(unsigned long) 730 bo[push[i].bo_index].user_priv; 731 struct drm_mm_node *mem = nvbo->bo.mem.mm_node; 732 733 OUT_RING(chan, ((mem->start << PAGE_SHIFT) + 734 push[i].offset) | 2); 735 OUT_RING(chan, 0); 736 } 737 } else { 738 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS)); 739 if (ret) { 740 NV_ERROR(dev, "jmp_space: %d\n", ret); 741 goto out; 742 } 743 744 for (i = 0; i < req->nr_push; i++) { 745 struct nouveau_bo *nvbo = (void *)(unsigned long) 746 bo[push[i].bo_index].user_priv; 747 struct drm_mm_node *mem = nvbo->bo.mem.mm_node; 748 uint32_t cmd; 749 750 cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2); 751 cmd |= 0x20000000; 752 if (unlikely(cmd != req->suffix0)) { 753 if (!nvbo->kmap.virtual) { 754 ret = ttm_bo_kmap(&nvbo->bo, 0, 755 nvbo->bo.mem. 756 num_pages, 757 &nvbo->kmap); 758 if (ret) { 759 WIND_RING(chan); 760 goto out; 761 } 762 nvbo->validate_mapped = true; 763 } 764 765 nouveau_bo_wr32(nvbo, (push[i].offset + 766 push[i].length - 8) / 4, cmd); 767 } 768 769 OUT_RING(chan, ((mem->start << PAGE_SHIFT) + 770 push[i].offset) | 0x20000000); 771 OUT_RING(chan, 0); 772 for (j = 0; j < NOUVEAU_DMA_SKIPS; j++) 773 OUT_RING(chan, 0); 774 } 775 } 776 777 ret = nouveau_fence_new(chan, &fence, true); 778 if (ret) { 779 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret); 780 WIND_RING(chan); 781 goto out; 782 } 783 784 out: 785 validate_fini(&op, fence); 786 nouveau_fence_unref(&fence); 787 788 out_prevalid: 789 kfree(bo); 790 kfree(push); 791 792 out_next: 793 if (chan->dma.ib_max) { 794 req->suffix0 = 0x00000000; 795 req->suffix1 = 0x00000000; 796 } else 797 if (dev_priv->chipset >= 0x25) { 798 req->suffix0 = 0x00020000; 799 req->suffix1 = 0x00000000; 800 } else { 801 req->suffix0 = 0x20000000 | 802 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2)); 803 req->suffix1 = 0x00000000; 804 } 805 806 nouveau_channel_put(&chan); 807 return ret; 808 } 809 810 static inline uint32_t 811 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain) 812 { 813 uint32_t flags = 0; 814 815 if (domain & NOUVEAU_GEM_DOMAIN_VRAM) 816 flags |= TTM_PL_FLAG_VRAM; 817 if (domain & NOUVEAU_GEM_DOMAIN_GART) 818 flags |= TTM_PL_FLAG_TT; 819 820 return flags; 821 } 822 823 int 824 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, 825 struct drm_file *file_priv) 826 { 827 struct drm_nouveau_gem_cpu_prep *req = data; 828 struct drm_gem_object *gem; 829 struct nouveau_bo *nvbo; 830 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT); 831 int ret = -EINVAL; 832 833 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 834 if (!gem) 835 return -ENOENT; 836 nvbo = nouveau_gem_object(gem); 837 838 spin_lock(&nvbo->bo.bdev->fence_lock); 839 ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait); 840 spin_unlock(&nvbo->bo.bdev->fence_lock); 841 drm_gem_object_unreference_unlocked(gem); 842 return ret; 843 } 844 845 int 846 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data, 847 struct drm_file *file_priv) 848 { 849 return 0; 850 } 851 852 int 853 nouveau_gem_ioctl_info(struct drm_device *dev, void *data, 854 struct drm_file *file_priv) 855 { 856 struct drm_nouveau_gem_info *req = data; 857 struct drm_gem_object *gem; 858 int ret; 859 860 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 861 if (!gem) 862 return -ENOENT; 863 864 ret = nouveau_gem_info(file_priv, gem, req); 865 drm_gem_object_unreference_unlocked(gem); 866 return ret; 867 } 868 869