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->cpu_filp)) 52 ttm_bo_synccpu_write_release(bo); 53 54 if (unlikely(nvbo->pin_refcnt)) { 55 nvbo->pin_refcnt = 1; 56 nouveau_bo_unpin(nvbo); 57 } 58 59 ttm_bo_unref(&bo); 60 } 61 62 int 63 nouveau_gem_new(struct drm_device *dev, struct nouveau_channel *chan, 64 int size, int align, uint32_t flags, uint32_t tile_mode, 65 uint32_t tile_flags, bool no_vm, bool mappable, 66 struct nouveau_bo **pnvbo) 67 { 68 struct nouveau_bo *nvbo; 69 int ret; 70 71 ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode, 72 tile_flags, no_vm, mappable, pnvbo); 73 if (ret) 74 return ret; 75 nvbo = *pnvbo; 76 77 nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size); 78 if (!nvbo->gem) { 79 nouveau_bo_ref(NULL, pnvbo); 80 return -ENOMEM; 81 } 82 83 nvbo->bo.persistant_swap_storage = nvbo->gem->filp; 84 nvbo->gem->driver_private = nvbo; 85 return 0; 86 } 87 88 static int 89 nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep) 90 { 91 struct nouveau_bo *nvbo = nouveau_gem_object(gem); 92 93 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 94 rep->domain = NOUVEAU_GEM_DOMAIN_GART; 95 else 96 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM; 97 98 rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT; 99 rep->offset = nvbo->bo.offset; 100 rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0; 101 rep->tile_mode = nvbo->tile_mode; 102 rep->tile_flags = nvbo->tile_flags; 103 return 0; 104 } 105 106 static bool 107 nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) { 108 switch (tile_flags) { 109 case 0x0000: 110 case 0x1800: 111 case 0x2800: 112 case 0x4800: 113 case 0x7000: 114 case 0x7400: 115 case 0x7a00: 116 case 0xe000: 117 break; 118 default: 119 NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags); 120 return false; 121 } 122 123 return true; 124 } 125 126 int 127 nouveau_gem_ioctl_new(struct drm_device *dev, void *data, 128 struct drm_file *file_priv) 129 { 130 struct drm_nouveau_private *dev_priv = dev->dev_private; 131 struct drm_nouveau_gem_new *req = data; 132 struct nouveau_bo *nvbo = NULL; 133 struct nouveau_channel *chan = NULL; 134 uint32_t flags = 0; 135 int ret = 0; 136 137 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 138 139 if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL)) 140 dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping; 141 142 if (req->channel_hint) { 143 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint, 144 file_priv, chan); 145 } 146 147 if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM) 148 flags |= TTM_PL_FLAG_VRAM; 149 if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART) 150 flags |= TTM_PL_FLAG_TT; 151 if (!flags || req->info.domain & NOUVEAU_GEM_DOMAIN_CPU) 152 flags |= TTM_PL_FLAG_SYSTEM; 153 154 if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags)) 155 return -EINVAL; 156 157 ret = nouveau_gem_new(dev, chan, req->info.size, req->align, flags, 158 req->info.tile_mode, req->info.tile_flags, false, 159 (req->info.domain & NOUVEAU_GEM_DOMAIN_MAPPABLE), 160 &nvbo); 161 if (ret) 162 return ret; 163 164 ret = nouveau_gem_info(nvbo->gem, &req->info); 165 if (ret) 166 goto out; 167 168 ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle); 169 out: 170 mutex_lock(&dev->struct_mutex); 171 drm_gem_object_handle_unreference(nvbo->gem); 172 mutex_unlock(&dev->struct_mutex); 173 174 if (ret) 175 drm_gem_object_unreference(nvbo->gem); 176 return ret; 177 } 178 179 static int 180 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains, 181 uint32_t write_domains, uint32_t valid_domains) 182 { 183 struct nouveau_bo *nvbo = gem->driver_private; 184 struct ttm_buffer_object *bo = &nvbo->bo; 185 uint64_t flags; 186 187 if (!valid_domains || (!read_domains && !write_domains)) 188 return -EINVAL; 189 190 if (write_domains) { 191 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 192 (write_domains & NOUVEAU_GEM_DOMAIN_VRAM)) 193 flags = TTM_PL_FLAG_VRAM; 194 else 195 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) && 196 (write_domains & NOUVEAU_GEM_DOMAIN_GART)) 197 flags = TTM_PL_FLAG_TT; 198 else 199 return -EINVAL; 200 } else { 201 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 202 (read_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 203 bo->mem.mem_type == TTM_PL_VRAM) 204 flags = TTM_PL_FLAG_VRAM; 205 else 206 if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) && 207 (read_domains & NOUVEAU_GEM_DOMAIN_GART) && 208 bo->mem.mem_type == TTM_PL_TT) 209 flags = TTM_PL_FLAG_TT; 210 else 211 if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 212 (read_domains & NOUVEAU_GEM_DOMAIN_VRAM)) 213 flags = TTM_PL_FLAG_VRAM; 214 else 215 flags = TTM_PL_FLAG_TT; 216 } 217 218 nouveau_bo_placement_set(nvbo, flags); 219 return 0; 220 } 221 222 struct validate_op { 223 struct list_head vram_list; 224 struct list_head gart_list; 225 struct list_head both_list; 226 }; 227 228 static void 229 validate_fini_list(struct list_head *list, struct nouveau_fence *fence) 230 { 231 struct list_head *entry, *tmp; 232 struct nouveau_bo *nvbo; 233 234 list_for_each_safe(entry, tmp, list) { 235 nvbo = list_entry(entry, struct nouveau_bo, entry); 236 if (likely(fence)) { 237 struct nouveau_fence *prev_fence; 238 239 spin_lock(&nvbo->bo.lock); 240 prev_fence = nvbo->bo.sync_obj; 241 nvbo->bo.sync_obj = nouveau_fence_ref(fence); 242 spin_unlock(&nvbo->bo.lock); 243 nouveau_fence_unref((void *)&prev_fence); 244 } 245 246 list_del(&nvbo->entry); 247 nvbo->reserved_by = NULL; 248 ttm_bo_unreserve(&nvbo->bo); 249 drm_gem_object_unreference(nvbo->gem); 250 } 251 } 252 253 static void 254 validate_fini(struct validate_op *op, struct nouveau_fence* fence) 255 { 256 validate_fini_list(&op->vram_list, fence); 257 validate_fini_list(&op->gart_list, fence); 258 validate_fini_list(&op->both_list, fence); 259 } 260 261 static int 262 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, 263 struct drm_nouveau_gem_pushbuf_bo *pbbo, 264 int nr_buffers, struct validate_op *op) 265 { 266 struct drm_device *dev = chan->dev; 267 struct drm_nouveau_private *dev_priv = dev->dev_private; 268 uint32_t sequence; 269 int trycnt = 0; 270 int ret, i; 271 272 sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence); 273 retry: 274 if (++trycnt > 100000) { 275 NV_ERROR(dev, "%s failed and gave up.\n", __func__); 276 return -EINVAL; 277 } 278 279 for (i = 0; i < nr_buffers; i++) { 280 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i]; 281 struct drm_gem_object *gem; 282 struct nouveau_bo *nvbo; 283 284 gem = drm_gem_object_lookup(dev, file_priv, b->handle); 285 if (!gem) { 286 NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle); 287 validate_fini(op, NULL); 288 return -EINVAL; 289 } 290 nvbo = gem->driver_private; 291 292 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) { 293 NV_ERROR(dev, "multiple instances of buffer %d on " 294 "validation list\n", b->handle); 295 validate_fini(op, NULL); 296 return -EINVAL; 297 } 298 299 ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence); 300 if (ret) { 301 validate_fini(op, NULL); 302 if (ret == -EAGAIN) 303 ret = ttm_bo_wait_unreserved(&nvbo->bo, false); 304 drm_gem_object_unreference(gem); 305 if (ret) 306 return ret; 307 goto retry; 308 } 309 310 nvbo->reserved_by = file_priv; 311 nvbo->pbbo_index = i; 312 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && 313 (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)) 314 list_add_tail(&nvbo->entry, &op->both_list); 315 else 316 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) 317 list_add_tail(&nvbo->entry, &op->vram_list); 318 else 319 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART) 320 list_add_tail(&nvbo->entry, &op->gart_list); 321 else { 322 NV_ERROR(dev, "invalid valid domains: 0x%08x\n", 323 b->valid_domains); 324 list_add_tail(&nvbo->entry, &op->both_list); 325 validate_fini(op, NULL); 326 return -EINVAL; 327 } 328 329 if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) { 330 validate_fini(op, NULL); 331 332 if (nvbo->cpu_filp == file_priv) { 333 NV_ERROR(dev, "bo %p mapped by process trying " 334 "to validate it!\n", nvbo); 335 return -EINVAL; 336 } 337 338 ret = ttm_bo_wait_cpu(&nvbo->bo, false); 339 if (ret) 340 return ret; 341 goto retry; 342 } 343 } 344 345 return 0; 346 } 347 348 static int 349 validate_list(struct nouveau_channel *chan, struct list_head *list, 350 struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr) 351 { 352 struct drm_nouveau_gem_pushbuf_bo __user *upbbo = 353 (void __force __user *)(uintptr_t)user_pbbo_ptr; 354 struct nouveau_bo *nvbo; 355 int ret, relocs = 0; 356 357 list_for_each_entry(nvbo, list, entry) { 358 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index]; 359 struct nouveau_fence *prev_fence = nvbo->bo.sync_obj; 360 361 if (prev_fence && nouveau_fence_channel(prev_fence) != chan) { 362 spin_lock(&nvbo->bo.lock); 363 ret = ttm_bo_wait(&nvbo->bo, false, false, false); 364 spin_unlock(&nvbo->bo.lock); 365 if (unlikely(ret)) 366 return ret; 367 } 368 369 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains, 370 b->write_domains, 371 b->valid_domains); 372 if (unlikely(ret)) 373 return ret; 374 375 nvbo->channel = chan; 376 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement, 377 false, false); 378 nvbo->channel = NULL; 379 if (unlikely(ret)) 380 return ret; 381 382 if (nvbo->bo.offset == b->presumed_offset && 383 ((nvbo->bo.mem.mem_type == TTM_PL_VRAM && 384 b->presumed_domain & NOUVEAU_GEM_DOMAIN_VRAM) || 385 (nvbo->bo.mem.mem_type == TTM_PL_TT && 386 b->presumed_domain & NOUVEAU_GEM_DOMAIN_GART))) 387 continue; 388 389 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 390 b->presumed_domain = NOUVEAU_GEM_DOMAIN_GART; 391 else 392 b->presumed_domain = NOUVEAU_GEM_DOMAIN_VRAM; 393 b->presumed_offset = nvbo->bo.offset; 394 b->presumed_ok = 0; 395 relocs++; 396 397 if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b))) 398 return -EFAULT; 399 } 400 401 return relocs; 402 } 403 404 static int 405 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan, 406 struct drm_file *file_priv, 407 struct drm_nouveau_gem_pushbuf_bo *pbbo, 408 uint64_t user_buffers, int nr_buffers, 409 struct validate_op *op, int *apply_relocs) 410 { 411 int ret, relocs = 0; 412 413 INIT_LIST_HEAD(&op->vram_list); 414 INIT_LIST_HEAD(&op->gart_list); 415 INIT_LIST_HEAD(&op->both_list); 416 417 if (nr_buffers == 0) 418 return 0; 419 420 ret = validate_init(chan, file_priv, pbbo, nr_buffers, op); 421 if (unlikely(ret)) 422 return ret; 423 424 ret = validate_list(chan, &op->vram_list, pbbo, user_buffers); 425 if (unlikely(ret < 0)) { 426 validate_fini(op, NULL); 427 return ret; 428 } 429 relocs += ret; 430 431 ret = validate_list(chan, &op->gart_list, pbbo, user_buffers); 432 if (unlikely(ret < 0)) { 433 validate_fini(op, NULL); 434 return ret; 435 } 436 relocs += ret; 437 438 ret = validate_list(chan, &op->both_list, pbbo, user_buffers); 439 if (unlikely(ret < 0)) { 440 validate_fini(op, NULL); 441 return ret; 442 } 443 relocs += ret; 444 445 *apply_relocs = relocs; 446 return 0; 447 } 448 449 static inline void * 450 u_memcpya(uint64_t user, unsigned nmemb, unsigned size) 451 { 452 void *mem; 453 void __user *userptr = (void __force __user *)(uintptr_t)user; 454 455 mem = kmalloc(nmemb * size, GFP_KERNEL); 456 if (!mem) 457 return ERR_PTR(-ENOMEM); 458 459 if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) { 460 kfree(mem); 461 return ERR_PTR(-EFAULT); 462 } 463 464 return mem; 465 } 466 467 static int 468 nouveau_gem_pushbuf_reloc_apply(struct nouveau_channel *chan, int nr_bo, 469 struct drm_nouveau_gem_pushbuf_bo *bo, 470 unsigned nr_relocs, uint64_t ptr_relocs, 471 unsigned nr_dwords, unsigned first_dword, 472 uint32_t *pushbuf, bool is_iomem) 473 { 474 struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL; 475 struct drm_device *dev = chan->dev; 476 int ret = 0; 477 unsigned i; 478 479 reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc)); 480 if (IS_ERR(reloc)) 481 return PTR_ERR(reloc); 482 483 for (i = 0; i < nr_relocs; i++) { 484 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i]; 485 struct drm_nouveau_gem_pushbuf_bo *b; 486 uint32_t data; 487 488 if (r->bo_index >= nr_bo || r->reloc_index < first_dword || 489 r->reloc_index >= first_dword + nr_dwords) { 490 NV_ERROR(dev, "Bad relocation %d\n", i); 491 NV_ERROR(dev, " bo: %d max %d\n", r->bo_index, nr_bo); 492 NV_ERROR(dev, " id: %d max %d\n", r->reloc_index, nr_dwords); 493 ret = -EINVAL; 494 break; 495 } 496 497 b = &bo[r->bo_index]; 498 if (b->presumed_ok) 499 continue; 500 501 if (r->flags & NOUVEAU_GEM_RELOC_LOW) 502 data = b->presumed_offset + r->data; 503 else 504 if (r->flags & NOUVEAU_GEM_RELOC_HIGH) 505 data = (b->presumed_offset + r->data) >> 32; 506 else 507 data = r->data; 508 509 if (r->flags & NOUVEAU_GEM_RELOC_OR) { 510 if (b->presumed_domain == NOUVEAU_GEM_DOMAIN_GART) 511 data |= r->tor; 512 else 513 data |= r->vor; 514 } 515 516 if (is_iomem) 517 iowrite32_native(data, (void __force __iomem *) 518 &pushbuf[r->reloc_index]); 519 else 520 pushbuf[r->reloc_index] = data; 521 } 522 523 kfree(reloc); 524 return ret; 525 } 526 527 int 528 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, 529 struct drm_file *file_priv) 530 { 531 struct drm_nouveau_gem_pushbuf *req = data; 532 struct drm_nouveau_gem_pushbuf_bo *bo = NULL; 533 struct nouveau_channel *chan; 534 struct validate_op op; 535 struct nouveau_fence* fence = 0; 536 uint32_t *pushbuf = NULL; 537 int ret = 0, do_reloc = 0, i; 538 539 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 540 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan); 541 542 if (req->nr_dwords >= chan->dma.max || 543 req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS || 544 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) { 545 NV_ERROR(dev, "Pushbuf config exceeds limits:\n"); 546 NV_ERROR(dev, " dwords : %d max %d\n", req->nr_dwords, 547 chan->dma.max - 1); 548 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers, 549 NOUVEAU_GEM_MAX_BUFFERS); 550 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs, 551 NOUVEAU_GEM_MAX_RELOCS); 552 return -EINVAL; 553 } 554 555 pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t)); 556 if (IS_ERR(pushbuf)) 557 return PTR_ERR(pushbuf); 558 559 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); 560 if (IS_ERR(bo)) { 561 kfree(pushbuf); 562 return PTR_ERR(bo); 563 } 564 565 mutex_lock(&dev->struct_mutex); 566 567 /* Validate buffer list */ 568 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers, 569 req->nr_buffers, &op, &do_reloc); 570 if (ret) 571 goto out; 572 573 /* Apply any relocations that are required */ 574 if (do_reloc) { 575 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, 576 bo, req->nr_relocs, 577 req->relocs, 578 req->nr_dwords, 0, 579 pushbuf, false); 580 if (ret) 581 goto out; 582 } 583 584 /* Emit push buffer to the hw 585 */ 586 ret = RING_SPACE(chan, req->nr_dwords); 587 if (ret) 588 goto out; 589 590 OUT_RINGp(chan, pushbuf, req->nr_dwords); 591 592 ret = nouveau_fence_new(chan, &fence, true); 593 if (ret) { 594 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret); 595 WIND_RING(chan); 596 goto out; 597 } 598 599 if (nouveau_gem_pushbuf_sync(chan)) { 600 ret = nouveau_fence_wait(fence, NULL, false, false); 601 if (ret) { 602 for (i = 0; i < req->nr_dwords; i++) 603 NV_ERROR(dev, "0x%08x\n", pushbuf[i]); 604 NV_ERROR(dev, "^^ above push buffer is fail :(\n"); 605 } 606 } 607 608 out: 609 validate_fini(&op, fence); 610 nouveau_fence_unref((void**)&fence); 611 mutex_unlock(&dev->struct_mutex); 612 kfree(pushbuf); 613 kfree(bo); 614 return ret; 615 } 616 617 #define PUSHBUF_CAL (dev_priv->card_type >= NV_20) 618 619 int 620 nouveau_gem_ioctl_pushbuf_call(struct drm_device *dev, void *data, 621 struct drm_file *file_priv) 622 { 623 struct drm_nouveau_private *dev_priv = dev->dev_private; 624 struct drm_nouveau_gem_pushbuf_call *req = data; 625 struct drm_nouveau_gem_pushbuf_bo *bo = NULL; 626 struct nouveau_channel *chan; 627 struct drm_gem_object *gem; 628 struct nouveau_bo *pbbo; 629 struct validate_op op; 630 struct nouveau_fence* fence = 0; 631 int i, ret = 0, do_reloc = 0; 632 633 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 634 NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan); 635 636 if (unlikely(req->handle == 0)) 637 goto out_next; 638 639 if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS || 640 req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) { 641 NV_ERROR(dev, "Pushbuf config exceeds limits:\n"); 642 NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers, 643 NOUVEAU_GEM_MAX_BUFFERS); 644 NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs, 645 NOUVEAU_GEM_MAX_RELOCS); 646 return -EINVAL; 647 } 648 649 bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); 650 if (IS_ERR(bo)) 651 return PTR_ERR(bo); 652 653 mutex_lock(&dev->struct_mutex); 654 655 /* Validate buffer list */ 656 ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers, 657 req->nr_buffers, &op, &do_reloc); 658 if (ret) { 659 NV_ERROR(dev, "validate: %d\n", ret); 660 goto out; 661 } 662 663 /* Validate DMA push buffer */ 664 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 665 if (!gem) { 666 NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle); 667 ret = -EINVAL; 668 goto out; 669 } 670 pbbo = nouveau_gem_object(gem); 671 672 if ((req->offset & 3) || req->nr_dwords < 2 || 673 (unsigned long)req->offset > (unsigned long)pbbo->bo.mem.size || 674 (unsigned long)req->nr_dwords > 675 ((unsigned long)(pbbo->bo.mem.size - req->offset ) >> 2)) { 676 NV_ERROR(dev, "pb call misaligned or out of bounds: " 677 "%d + %d * 4 > %ld\n", 678 req->offset, req->nr_dwords, pbbo->bo.mem.size); 679 ret = -EINVAL; 680 drm_gem_object_unreference(gem); 681 goto out; 682 } 683 684 ret = ttm_bo_reserve(&pbbo->bo, false, false, true, 685 chan->fence.sequence); 686 if (ret) { 687 NV_ERROR(dev, "resv pb: %d\n", ret); 688 drm_gem_object_unreference(gem); 689 goto out; 690 } 691 692 nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type); 693 ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false); 694 if (ret) { 695 NV_ERROR(dev, "validate pb: %d\n", ret); 696 ttm_bo_unreserve(&pbbo->bo); 697 drm_gem_object_unreference(gem); 698 goto out; 699 } 700 701 list_add_tail(&pbbo->entry, &op.both_list); 702 703 /* If presumed return address doesn't match, we need to map the 704 * push buffer and fix it.. 705 */ 706 if (!PUSHBUF_CAL) { 707 uint32_t retaddy; 708 709 if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) { 710 ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS); 711 if (ret) { 712 NV_ERROR(dev, "jmp_space: %d\n", ret); 713 goto out; 714 } 715 } 716 717 retaddy = chan->pushbuf_base + ((chan->dma.cur + 2) << 2); 718 retaddy |= 0x20000000; 719 if (retaddy != req->suffix0) { 720 req->suffix0 = retaddy; 721 do_reloc = 1; 722 } 723 } 724 725 /* Apply any relocations that are required */ 726 if (do_reloc) { 727 void *pbvirt; 728 bool is_iomem; 729 ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages, 730 &pbbo->kmap); 731 if (ret) { 732 NV_ERROR(dev, "kmap pb: %d\n", ret); 733 goto out; 734 } 735 736 pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem); 737 ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo, 738 req->nr_relocs, 739 req->relocs, 740 req->nr_dwords, 741 req->offset / 4, 742 pbvirt, is_iomem); 743 744 if (!PUSHBUF_CAL) { 745 nouveau_bo_wr32(pbbo, 746 req->offset / 4 + req->nr_dwords - 2, 747 req->suffix0); 748 } 749 750 ttm_bo_kunmap(&pbbo->kmap); 751 if (ret) { 752 NV_ERROR(dev, "reloc apply: %d\n", ret); 753 goto out; 754 } 755 } 756 757 if (PUSHBUF_CAL) { 758 ret = RING_SPACE(chan, 2); 759 if (ret) { 760 NV_ERROR(dev, "cal_space: %d\n", ret); 761 goto out; 762 } 763 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + 764 req->offset) | 2); 765 OUT_RING(chan, 0); 766 } else { 767 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS); 768 if (ret) { 769 NV_ERROR(dev, "jmp_space: %d\n", ret); 770 goto out; 771 } 772 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + 773 req->offset) | 0x20000000); 774 OUT_RING(chan, 0); 775 776 /* Space the jumps apart with NOPs. */ 777 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) 778 OUT_RING(chan, 0); 779 } 780 781 ret = nouveau_fence_new(chan, &fence, true); 782 if (ret) { 783 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret); 784 WIND_RING(chan); 785 goto out; 786 } 787 788 out: 789 validate_fini(&op, fence); 790 nouveau_fence_unref((void**)&fence); 791 mutex_unlock(&dev->struct_mutex); 792 kfree(bo); 793 794 out_next: 795 if (PUSHBUF_CAL) { 796 req->suffix0 = 0x00020000; 797 req->suffix1 = 0x00000000; 798 } else { 799 req->suffix0 = 0x20000000 | 800 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2)); 801 req->suffix1 = 0x00000000; 802 } 803 804 return ret; 805 } 806 807 int 808 nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data, 809 struct drm_file *file_priv) 810 { 811 struct drm_nouveau_private *dev_priv = dev->dev_private; 812 struct drm_nouveau_gem_pushbuf_call *req = data; 813 814 req->vram_available = dev_priv->fb_aper_free; 815 req->gart_available = dev_priv->gart_info.aper_free; 816 817 return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv); 818 } 819 820 static inline uint32_t 821 domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain) 822 { 823 uint32_t flags = 0; 824 825 if (domain & NOUVEAU_GEM_DOMAIN_VRAM) 826 flags |= TTM_PL_FLAG_VRAM; 827 if (domain & NOUVEAU_GEM_DOMAIN_GART) 828 flags |= TTM_PL_FLAG_TT; 829 830 return flags; 831 } 832 833 int 834 nouveau_gem_ioctl_pin(struct drm_device *dev, void *data, 835 struct drm_file *file_priv) 836 { 837 struct drm_nouveau_gem_pin *req = data; 838 struct drm_gem_object *gem; 839 struct nouveau_bo *nvbo; 840 int ret = 0; 841 842 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 843 844 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 845 NV_ERROR(dev, "pin only allowed without kernel modesetting\n"); 846 return -EINVAL; 847 } 848 849 if (!DRM_SUSER(DRM_CURPROC)) 850 return -EPERM; 851 852 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 853 if (!gem) 854 return -EINVAL; 855 nvbo = nouveau_gem_object(gem); 856 857 ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain)); 858 if (ret) 859 goto out; 860 861 req->offset = nvbo->bo.offset; 862 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 863 req->domain = NOUVEAU_GEM_DOMAIN_GART; 864 else 865 req->domain = NOUVEAU_GEM_DOMAIN_VRAM; 866 867 out: 868 mutex_lock(&dev->struct_mutex); 869 drm_gem_object_unreference(gem); 870 mutex_unlock(&dev->struct_mutex); 871 872 return ret; 873 } 874 875 int 876 nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data, 877 struct drm_file *file_priv) 878 { 879 struct drm_nouveau_gem_pin *req = data; 880 struct drm_gem_object *gem; 881 int ret; 882 883 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 884 885 if (drm_core_check_feature(dev, DRIVER_MODESET)) 886 return -EINVAL; 887 888 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 889 if (!gem) 890 return -EINVAL; 891 892 ret = nouveau_bo_unpin(nouveau_gem_object(gem)); 893 894 mutex_lock(&dev->struct_mutex); 895 drm_gem_object_unreference(gem); 896 mutex_unlock(&dev->struct_mutex); 897 898 return ret; 899 } 900 901 int 902 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, 903 struct drm_file *file_priv) 904 { 905 struct drm_nouveau_gem_cpu_prep *req = data; 906 struct drm_gem_object *gem; 907 struct nouveau_bo *nvbo; 908 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT); 909 int ret = -EINVAL; 910 911 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 912 913 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 914 if (!gem) 915 return ret; 916 nvbo = nouveau_gem_object(gem); 917 918 if (nvbo->cpu_filp) { 919 if (nvbo->cpu_filp == file_priv) 920 goto out; 921 922 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait); 923 if (ret) 924 goto out; 925 } 926 927 if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) { 928 spin_lock(&nvbo->bo.lock); 929 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait); 930 spin_unlock(&nvbo->bo.lock); 931 } else { 932 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait); 933 if (ret == 0) 934 nvbo->cpu_filp = file_priv; 935 } 936 937 out: 938 mutex_lock(&dev->struct_mutex); 939 drm_gem_object_unreference(gem); 940 mutex_unlock(&dev->struct_mutex); 941 return ret; 942 } 943 944 int 945 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data, 946 struct drm_file *file_priv) 947 { 948 struct drm_nouveau_gem_cpu_prep *req = data; 949 struct drm_gem_object *gem; 950 struct nouveau_bo *nvbo; 951 int ret = -EINVAL; 952 953 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 954 955 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 956 if (!gem) 957 return ret; 958 nvbo = nouveau_gem_object(gem); 959 960 if (nvbo->cpu_filp != file_priv) 961 goto out; 962 nvbo->cpu_filp = NULL; 963 964 ttm_bo_synccpu_write_release(&nvbo->bo); 965 ret = 0; 966 967 out: 968 mutex_lock(&dev->struct_mutex); 969 drm_gem_object_unreference(gem); 970 mutex_unlock(&dev->struct_mutex); 971 return ret; 972 } 973 974 int 975 nouveau_gem_ioctl_info(struct drm_device *dev, void *data, 976 struct drm_file *file_priv) 977 { 978 struct drm_nouveau_gem_info *req = data; 979 struct drm_gem_object *gem; 980 int ret; 981 982 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 983 984 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 985 if (!gem) 986 return -EINVAL; 987 988 ret = nouveau_gem_info(gem, req); 989 mutex_lock(&dev->struct_mutex); 990 drm_gem_object_unreference(gem); 991 mutex_unlock(&dev->struct_mutex); 992 return ret; 993 } 994 995