nouveau_gem.c revision 9a391ad8a2cdd7e5be9b6aabb56f4a46683ba377
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 35int 36nouveau_gem_object_new(struct drm_gem_object *gem) 37{ 38 return 0; 39} 40 41void 42nouveau_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 62int 63nouveau_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 88static int 89nouveau_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 106static bool 107nouveau_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 126int 127nouveau_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); 169out: 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 179static int 180nouveau_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 222struct validate_op { 223 struct list_head vram_list; 224 struct list_head gart_list; 225 struct list_head both_list; 226}; 227 228static void 229validate_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 253static void 254validate_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 261static int 262validate_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); 273retry: 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 348static int 349validate_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 404static int 405nouveau_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 449static inline void * 450u_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 467static int 468nouveau_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 527int 528nouveau_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 608out: 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 619int 620nouveau_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, 0, 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 (chan->dma.ib_max) { 758 ret = nouveau_dma_wait(chan, 2, 6); 759 if (ret) { 760 NV_INFO(dev, "nv50cal_space: %d\n", ret); 761 goto out; 762 } 763 764 nv50_dma_push(chan, pbbo, req->offset, req->nr_dwords); 765 } else 766 if (PUSHBUF_CAL) { 767 ret = RING_SPACE(chan, 2); 768 if (ret) { 769 NV_ERROR(dev, "cal_space: %d\n", ret); 770 goto out; 771 } 772 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + 773 req->offset) | 2); 774 OUT_RING(chan, 0); 775 } else { 776 ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS); 777 if (ret) { 778 NV_ERROR(dev, "jmp_space: %d\n", ret); 779 goto out; 780 } 781 OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + 782 req->offset) | 0x20000000); 783 OUT_RING(chan, 0); 784 785 /* Space the jumps apart with NOPs. */ 786 for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) 787 OUT_RING(chan, 0); 788 } 789 790 ret = nouveau_fence_new(chan, &fence, true); 791 if (ret) { 792 NV_ERROR(dev, "error fencing pushbuf: %d\n", ret); 793 WIND_RING(chan); 794 goto out; 795 } 796 797out: 798 validate_fini(&op, fence); 799 nouveau_fence_unref((void**)&fence); 800 mutex_unlock(&dev->struct_mutex); 801 kfree(bo); 802 803out_next: 804 if (chan->dma.ib_max) { 805 req->suffix0 = 0x00000000; 806 req->suffix1 = 0x00000000; 807 } else 808 if (PUSHBUF_CAL) { 809 req->suffix0 = 0x00020000; 810 req->suffix1 = 0x00000000; 811 } else { 812 req->suffix0 = 0x20000000 | 813 (chan->pushbuf_base + ((chan->dma.cur + 2) << 2)); 814 req->suffix1 = 0x00000000; 815 } 816 817 return ret; 818} 819 820int 821nouveau_gem_ioctl_pushbuf_call2(struct drm_device *dev, void *data, 822 struct drm_file *file_priv) 823{ 824 struct drm_nouveau_private *dev_priv = dev->dev_private; 825 struct drm_nouveau_gem_pushbuf_call *req = data; 826 827 req->vram_available = dev_priv->fb_aper_free; 828 req->gart_available = dev_priv->gart_info.aper_free; 829 830 return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv); 831} 832 833static inline uint32_t 834domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain) 835{ 836 uint32_t flags = 0; 837 838 if (domain & NOUVEAU_GEM_DOMAIN_VRAM) 839 flags |= TTM_PL_FLAG_VRAM; 840 if (domain & NOUVEAU_GEM_DOMAIN_GART) 841 flags |= TTM_PL_FLAG_TT; 842 843 return flags; 844} 845 846int 847nouveau_gem_ioctl_pin(struct drm_device *dev, void *data, 848 struct drm_file *file_priv) 849{ 850 struct drm_nouveau_gem_pin *req = data; 851 struct drm_gem_object *gem; 852 struct nouveau_bo *nvbo; 853 int ret = 0; 854 855 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 856 857 if (drm_core_check_feature(dev, DRIVER_MODESET)) { 858 NV_ERROR(dev, "pin only allowed without kernel modesetting\n"); 859 return -EINVAL; 860 } 861 862 if (!DRM_SUSER(DRM_CURPROC)) 863 return -EPERM; 864 865 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 866 if (!gem) 867 return -EINVAL; 868 nvbo = nouveau_gem_object(gem); 869 870 ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain)); 871 if (ret) 872 goto out; 873 874 req->offset = nvbo->bo.offset; 875 if (nvbo->bo.mem.mem_type == TTM_PL_TT) 876 req->domain = NOUVEAU_GEM_DOMAIN_GART; 877 else 878 req->domain = NOUVEAU_GEM_DOMAIN_VRAM; 879 880out: 881 mutex_lock(&dev->struct_mutex); 882 drm_gem_object_unreference(gem); 883 mutex_unlock(&dev->struct_mutex); 884 885 return ret; 886} 887 888int 889nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data, 890 struct drm_file *file_priv) 891{ 892 struct drm_nouveau_gem_pin *req = data; 893 struct drm_gem_object *gem; 894 int ret; 895 896 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 897 898 if (drm_core_check_feature(dev, DRIVER_MODESET)) 899 return -EINVAL; 900 901 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 902 if (!gem) 903 return -EINVAL; 904 905 ret = nouveau_bo_unpin(nouveau_gem_object(gem)); 906 907 mutex_lock(&dev->struct_mutex); 908 drm_gem_object_unreference(gem); 909 mutex_unlock(&dev->struct_mutex); 910 911 return ret; 912} 913 914int 915nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, 916 struct drm_file *file_priv) 917{ 918 struct drm_nouveau_gem_cpu_prep *req = data; 919 struct drm_gem_object *gem; 920 struct nouveau_bo *nvbo; 921 bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT); 922 int ret = -EINVAL; 923 924 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 925 926 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 927 if (!gem) 928 return ret; 929 nvbo = nouveau_gem_object(gem); 930 931 if (nvbo->cpu_filp) { 932 if (nvbo->cpu_filp == file_priv) 933 goto out; 934 935 ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait); 936 if (ret) 937 goto out; 938 } 939 940 if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) { 941 spin_lock(&nvbo->bo.lock); 942 ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait); 943 spin_unlock(&nvbo->bo.lock); 944 } else { 945 ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait); 946 if (ret == 0) 947 nvbo->cpu_filp = file_priv; 948 } 949 950out: 951 mutex_lock(&dev->struct_mutex); 952 drm_gem_object_unreference(gem); 953 mutex_unlock(&dev->struct_mutex); 954 return ret; 955} 956 957int 958nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data, 959 struct drm_file *file_priv) 960{ 961 struct drm_nouveau_gem_cpu_prep *req = data; 962 struct drm_gem_object *gem; 963 struct nouveau_bo *nvbo; 964 int ret = -EINVAL; 965 966 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 967 968 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 969 if (!gem) 970 return ret; 971 nvbo = nouveau_gem_object(gem); 972 973 if (nvbo->cpu_filp != file_priv) 974 goto out; 975 nvbo->cpu_filp = NULL; 976 977 ttm_bo_synccpu_write_release(&nvbo->bo); 978 ret = 0; 979 980out: 981 mutex_lock(&dev->struct_mutex); 982 drm_gem_object_unreference(gem); 983 mutex_unlock(&dev->struct_mutex); 984 return ret; 985} 986 987int 988nouveau_gem_ioctl_info(struct drm_device *dev, void *data, 989 struct drm_file *file_priv) 990{ 991 struct drm_nouveau_gem_info *req = data; 992 struct drm_gem_object *gem; 993 int ret; 994 995 NOUVEAU_CHECK_INITIALISED_WITH_RETURN; 996 997 gem = drm_gem_object_lookup(dev, file_priv, req->handle); 998 if (!gem) 999 return -EINVAL; 1000 1001 ret = nouveau_gem_info(gem, req); 1002 mutex_lock(&dev->struct_mutex); 1003 drm_gem_object_unreference(gem); 1004 mutex_unlock(&dev->struct_mutex); 1005 return ret; 1006} 1007 1008