1 /* 2 * Copyright 2008 Jerome Glisse. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: 25 * Jerome Glisse <glisse@freedesktop.org> 26 */ 27 #include <linux/list_sort.h> 28 #include <drm/drmP.h> 29 #include <drm/radeon_drm.h> 30 #include "radeon_reg.h" 31 #include "radeon.h" 32 #include "radeon_trace.h" 33 34 #define RADEON_CS_MAX_PRIORITY 32u 35 #define RADEON_CS_NUM_BUCKETS (RADEON_CS_MAX_PRIORITY + 1) 36 37 /* This is based on the bucket sort with O(n) time complexity. 38 * An item with priority "i" is added to bucket[i]. The lists are then 39 * concatenated in descending order. 40 */ 41 struct radeon_cs_buckets { 42 struct list_head bucket[RADEON_CS_NUM_BUCKETS]; 43 }; 44 45 static void radeon_cs_buckets_init(struct radeon_cs_buckets *b) 46 { 47 unsigned i; 48 49 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++) 50 INIT_LIST_HEAD(&b->bucket[i]); 51 } 52 53 static void radeon_cs_buckets_add(struct radeon_cs_buckets *b, 54 struct list_head *item, unsigned priority) 55 { 56 /* Since buffers which appear sooner in the relocation list are 57 * likely to be used more often than buffers which appear later 58 * in the list, the sort mustn't change the ordering of buffers 59 * with the same priority, i.e. it must be stable. 60 */ 61 list_add_tail(item, &b->bucket[min(priority, RADEON_CS_MAX_PRIORITY)]); 62 } 63 64 static void radeon_cs_buckets_get_list(struct radeon_cs_buckets *b, 65 struct list_head *out_list) 66 { 67 unsigned i; 68 69 /* Connect the sorted buckets in the output list. */ 70 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++) { 71 list_splice(&b->bucket[i], out_list); 72 } 73 } 74 75 static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) 76 { 77 struct radeon_cs_chunk *chunk; 78 struct radeon_cs_buckets buckets; 79 unsigned i; 80 bool need_mmap_lock = false; 81 int r; 82 83 if (p->chunk_relocs == NULL) { 84 return 0; 85 } 86 chunk = p->chunk_relocs; 87 p->dma_reloc_idx = 0; 88 /* FIXME: we assume that each relocs use 4 dwords */ 89 p->nrelocs = chunk->length_dw / 4; 90 p->relocs = kvmalloc_array(p->nrelocs, sizeof(struct radeon_bo_list), 91 GFP_KERNEL | __GFP_ZERO); 92 if (p->relocs == NULL) { 93 return -ENOMEM; 94 } 95 96 radeon_cs_buckets_init(&buckets); 97 98 for (i = 0; i < p->nrelocs; i++) { 99 struct drm_radeon_cs_reloc *r; 100 struct drm_gem_object *gobj; 101 unsigned priority; 102 103 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4]; 104 gobj = drm_gem_object_lookup(p->filp, r->handle); 105 if (gobj == NULL) { 106 DRM_ERROR("gem object lookup failed 0x%x\n", 107 r->handle); 108 return -ENOENT; 109 } 110 p->relocs[i].robj = gem_to_radeon_bo(gobj); 111 112 /* The userspace buffer priorities are from 0 to 15. A higher 113 * number means the buffer is more important. 114 * Also, the buffers used for write have a higher priority than 115 * the buffers used for read only, which doubles the range 116 * to 0 to 31. 32 is reserved for the kernel driver. 117 */ 118 priority = (r->flags & RADEON_RELOC_PRIO_MASK) * 2 119 + !!r->write_domain; 120 121 /* The first reloc of an UVD job is the msg and that must be in 122 * VRAM, the second reloc is the DPB and for WMV that must be in 123 * VRAM as well. Also put everything into VRAM on AGP cards and older 124 * IGP chips to avoid image corruptions 125 */ 126 if (p->ring == R600_RING_TYPE_UVD_INDEX && 127 (i <= 0 || pci_find_capability(p->rdev->ddev->pdev, 128 PCI_CAP_ID_AGP) || 129 p->rdev->family == CHIP_RS780 || 130 p->rdev->family == CHIP_RS880)) { 131 132 /* TODO: is this still needed for NI+ ? */ 133 p->relocs[i].preferred_domains = 134 RADEON_GEM_DOMAIN_VRAM; 135 136 p->relocs[i].allowed_domains = 137 RADEON_GEM_DOMAIN_VRAM; 138 139 /* prioritize this over any other relocation */ 140 priority = RADEON_CS_MAX_PRIORITY; 141 } else { 142 uint32_t domain = r->write_domain ? 143 r->write_domain : r->read_domains; 144 145 if (domain & RADEON_GEM_DOMAIN_CPU) { 146 DRM_ERROR("RADEON_GEM_DOMAIN_CPU is not valid " 147 "for command submission\n"); 148 return -EINVAL; 149 } 150 151 p->relocs[i].preferred_domains = domain; 152 if (domain == RADEON_GEM_DOMAIN_VRAM) 153 domain |= RADEON_GEM_DOMAIN_GTT; 154 p->relocs[i].allowed_domains = domain; 155 } 156 157 if (radeon_ttm_tt_has_userptr(p->relocs[i].robj->tbo.ttm)) { 158 uint32_t domain = p->relocs[i].preferred_domains; 159 if (!(domain & RADEON_GEM_DOMAIN_GTT)) { 160 DRM_ERROR("Only RADEON_GEM_DOMAIN_GTT is " 161 "allowed for userptr BOs\n"); 162 return -EINVAL; 163 } 164 need_mmap_lock = true; 165 domain = RADEON_GEM_DOMAIN_GTT; 166 p->relocs[i].preferred_domains = domain; 167 p->relocs[i].allowed_domains = domain; 168 } 169 170 /* Objects shared as dma-bufs cannot be moved to VRAM */ 171 if (p->relocs[i].robj->prime_shared_count) { 172 p->relocs[i].allowed_domains &= ~RADEON_GEM_DOMAIN_VRAM; 173 if (!p->relocs[i].allowed_domains) { 174 DRM_ERROR("BO associated with dma-buf cannot " 175 "be moved to VRAM\n"); 176 return -EINVAL; 177 } 178 } 179 180 p->relocs[i].tv.bo = &p->relocs[i].robj->tbo; 181 p->relocs[i].tv.shared = !r->write_domain; 182 183 radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head, 184 priority); 185 } 186 187 radeon_cs_buckets_get_list(&buckets, &p->validated); 188 189 if (p->cs_flags & RADEON_CS_USE_VM) 190 p->vm_bos = radeon_vm_get_bos(p->rdev, p->ib.vm, 191 &p->validated); 192 if (need_mmap_lock) 193 down_read(¤t->mm->mmap_sem); 194 195 r = radeon_bo_list_validate(p->rdev, &p->ticket, &p->validated, p->ring); 196 197 if (need_mmap_lock) 198 up_read(¤t->mm->mmap_sem); 199 200 return r; 201 } 202 203 static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority) 204 { 205 p->priority = priority; 206 207 switch (ring) { 208 default: 209 DRM_ERROR("unknown ring id: %d\n", ring); 210 return -EINVAL; 211 case RADEON_CS_RING_GFX: 212 p->ring = RADEON_RING_TYPE_GFX_INDEX; 213 break; 214 case RADEON_CS_RING_COMPUTE: 215 if (p->rdev->family >= CHIP_TAHITI) { 216 if (p->priority > 0) 217 p->ring = CAYMAN_RING_TYPE_CP1_INDEX; 218 else 219 p->ring = CAYMAN_RING_TYPE_CP2_INDEX; 220 } else 221 p->ring = RADEON_RING_TYPE_GFX_INDEX; 222 break; 223 case RADEON_CS_RING_DMA: 224 if (p->rdev->family >= CHIP_CAYMAN) { 225 if (p->priority > 0) 226 p->ring = R600_RING_TYPE_DMA_INDEX; 227 else 228 p->ring = CAYMAN_RING_TYPE_DMA1_INDEX; 229 } else if (p->rdev->family >= CHIP_RV770) { 230 p->ring = R600_RING_TYPE_DMA_INDEX; 231 } else { 232 return -EINVAL; 233 } 234 break; 235 case RADEON_CS_RING_UVD: 236 p->ring = R600_RING_TYPE_UVD_INDEX; 237 break; 238 case RADEON_CS_RING_VCE: 239 /* TODO: only use the low priority ring for now */ 240 p->ring = TN_RING_TYPE_VCE1_INDEX; 241 break; 242 } 243 return 0; 244 } 245 246 static int radeon_cs_sync_rings(struct radeon_cs_parser *p) 247 { 248 struct radeon_bo_list *reloc; 249 int r; 250 251 list_for_each_entry(reloc, &p->validated, tv.head) { 252 struct reservation_object *resv; 253 254 resv = reloc->robj->tbo.resv; 255 r = radeon_sync_resv(p->rdev, &p->ib.sync, resv, 256 reloc->tv.shared); 257 if (r) 258 return r; 259 } 260 return 0; 261 } 262 263 /* XXX: note that this is called from the legacy UMS CS ioctl as well */ 264 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) 265 { 266 struct drm_radeon_cs *cs = data; 267 uint64_t *chunk_array_ptr; 268 unsigned size, i; 269 u32 ring = RADEON_CS_RING_GFX; 270 s32 priority = 0; 271 272 INIT_LIST_HEAD(&p->validated); 273 274 if (!cs->num_chunks) { 275 return 0; 276 } 277 278 /* get chunks */ 279 p->idx = 0; 280 p->ib.sa_bo = NULL; 281 p->const_ib.sa_bo = NULL; 282 p->chunk_ib = NULL; 283 p->chunk_relocs = NULL; 284 p->chunk_flags = NULL; 285 p->chunk_const_ib = NULL; 286 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL); 287 if (p->chunks_array == NULL) { 288 return -ENOMEM; 289 } 290 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks); 291 if (copy_from_user(p->chunks_array, chunk_array_ptr, 292 sizeof(uint64_t)*cs->num_chunks)) { 293 return -EFAULT; 294 } 295 p->cs_flags = 0; 296 p->nchunks = cs->num_chunks; 297 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL); 298 if (p->chunks == NULL) { 299 return -ENOMEM; 300 } 301 for (i = 0; i < p->nchunks; i++) { 302 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL; 303 struct drm_radeon_cs_chunk user_chunk; 304 uint32_t __user *cdata; 305 306 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i]; 307 if (copy_from_user(&user_chunk, chunk_ptr, 308 sizeof(struct drm_radeon_cs_chunk))) { 309 return -EFAULT; 310 } 311 p->chunks[i].length_dw = user_chunk.length_dw; 312 if (user_chunk.chunk_id == RADEON_CHUNK_ID_RELOCS) { 313 p->chunk_relocs = &p->chunks[i]; 314 } 315 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) { 316 p->chunk_ib = &p->chunks[i]; 317 /* zero length IB isn't useful */ 318 if (p->chunks[i].length_dw == 0) 319 return -EINVAL; 320 } 321 if (user_chunk.chunk_id == RADEON_CHUNK_ID_CONST_IB) { 322 p->chunk_const_ib = &p->chunks[i]; 323 /* zero length CONST IB isn't useful */ 324 if (p->chunks[i].length_dw == 0) 325 return -EINVAL; 326 } 327 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) { 328 p->chunk_flags = &p->chunks[i]; 329 /* zero length flags aren't useful */ 330 if (p->chunks[i].length_dw == 0) 331 return -EINVAL; 332 } 333 334 size = p->chunks[i].length_dw; 335 cdata = (void __user *)(unsigned long)user_chunk.chunk_data; 336 p->chunks[i].user_ptr = cdata; 337 if (user_chunk.chunk_id == RADEON_CHUNK_ID_CONST_IB) 338 continue; 339 340 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) { 341 if (!p->rdev || !(p->rdev->flags & RADEON_IS_AGP)) 342 continue; 343 } 344 345 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL); 346 size *= sizeof(uint32_t); 347 if (p->chunks[i].kdata == NULL) { 348 return -ENOMEM; 349 } 350 if (copy_from_user(p->chunks[i].kdata, cdata, size)) { 351 return -EFAULT; 352 } 353 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) { 354 p->cs_flags = p->chunks[i].kdata[0]; 355 if (p->chunks[i].length_dw > 1) 356 ring = p->chunks[i].kdata[1]; 357 if (p->chunks[i].length_dw > 2) 358 priority = (s32)p->chunks[i].kdata[2]; 359 } 360 } 361 362 /* these are KMS only */ 363 if (p->rdev) { 364 if ((p->cs_flags & RADEON_CS_USE_VM) && 365 !p->rdev->vm_manager.enabled) { 366 DRM_ERROR("VM not active on asic!\n"); 367 return -EINVAL; 368 } 369 370 if (radeon_cs_get_ring(p, ring, priority)) 371 return -EINVAL; 372 373 /* we only support VM on some SI+ rings */ 374 if ((p->cs_flags & RADEON_CS_USE_VM) == 0) { 375 if (p->rdev->asic->ring[p->ring]->cs_parse == NULL) { 376 DRM_ERROR("Ring %d requires VM!\n", p->ring); 377 return -EINVAL; 378 } 379 } else { 380 if (p->rdev->asic->ring[p->ring]->ib_parse == NULL) { 381 DRM_ERROR("VM not supported on ring %d!\n", 382 p->ring); 383 return -EINVAL; 384 } 385 } 386 } 387 388 return 0; 389 } 390 391 static int cmp_size_smaller_first(void *priv, struct list_head *a, 392 struct list_head *b) 393 { 394 struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, tv.head); 395 struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head); 396 397 /* Sort A before B if A is smaller. */ 398 return (int)la->robj->tbo.num_pages - (int)lb->robj->tbo.num_pages; 399 } 400 401 /** 402 * cs_parser_fini() - clean parser states 403 * @parser: parser structure holding parsing context. 404 * @error: error number 405 * 406 * If error is set than unvalidate buffer, otherwise just free memory 407 * used by parsing context. 408 **/ 409 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff) 410 { 411 unsigned i; 412 413 if (!error) { 414 /* Sort the buffer list from the smallest to largest buffer, 415 * which affects the order of buffers in the LRU list. 416 * This assures that the smallest buffers are added first 417 * to the LRU list, so they are likely to be later evicted 418 * first, instead of large buffers whose eviction is more 419 * expensive. 420 * 421 * This slightly lowers the number of bytes moved by TTM 422 * per frame under memory pressure. 423 */ 424 list_sort(NULL, &parser->validated, cmp_size_smaller_first); 425 426 ttm_eu_fence_buffer_objects(&parser->ticket, 427 &parser->validated, 428 &parser->ib.fence->base); 429 } else if (backoff) { 430 ttm_eu_backoff_reservation(&parser->ticket, 431 &parser->validated); 432 } 433 434 if (parser->relocs != NULL) { 435 for (i = 0; i < parser->nrelocs; i++) { 436 struct radeon_bo *bo = parser->relocs[i].robj; 437 if (bo == NULL) 438 continue; 439 440 drm_gem_object_put_unlocked(&bo->gem_base); 441 } 442 } 443 kfree(parser->track); 444 kvfree(parser->relocs); 445 kvfree(parser->vm_bos); 446 for (i = 0; i < parser->nchunks; i++) 447 kvfree(parser->chunks[i].kdata); 448 kfree(parser->chunks); 449 kfree(parser->chunks_array); 450 radeon_ib_free(parser->rdev, &parser->ib); 451 radeon_ib_free(parser->rdev, &parser->const_ib); 452 } 453 454 static int radeon_cs_ib_chunk(struct radeon_device *rdev, 455 struct radeon_cs_parser *parser) 456 { 457 int r; 458 459 if (parser->chunk_ib == NULL) 460 return 0; 461 462 if (parser->cs_flags & RADEON_CS_USE_VM) 463 return 0; 464 465 r = radeon_cs_parse(rdev, parser->ring, parser); 466 if (r || parser->parser_error) { 467 DRM_ERROR("Invalid command stream !\n"); 468 return r; 469 } 470 471 r = radeon_cs_sync_rings(parser); 472 if (r) { 473 if (r != -ERESTARTSYS) 474 DRM_ERROR("Failed to sync rings: %i\n", r); 475 return r; 476 } 477 478 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 479 radeon_uvd_note_usage(rdev); 480 else if ((parser->ring == TN_RING_TYPE_VCE1_INDEX) || 481 (parser->ring == TN_RING_TYPE_VCE2_INDEX)) 482 radeon_vce_note_usage(rdev); 483 484 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true); 485 if (r) { 486 DRM_ERROR("Failed to schedule IB !\n"); 487 } 488 return r; 489 } 490 491 static int radeon_bo_vm_update_pte(struct radeon_cs_parser *p, 492 struct radeon_vm *vm) 493 { 494 struct radeon_device *rdev = p->rdev; 495 struct radeon_bo_va *bo_va; 496 int i, r; 497 498 r = radeon_vm_update_page_directory(rdev, vm); 499 if (r) 500 return r; 501 502 r = radeon_vm_clear_freed(rdev, vm); 503 if (r) 504 return r; 505 506 if (vm->ib_bo_va == NULL) { 507 DRM_ERROR("Tmp BO not in VM!\n"); 508 return -EINVAL; 509 } 510 511 r = radeon_vm_bo_update(rdev, vm->ib_bo_va, 512 &rdev->ring_tmp_bo.bo->tbo.mem); 513 if (r) 514 return r; 515 516 for (i = 0; i < p->nrelocs; i++) { 517 struct radeon_bo *bo; 518 519 bo = p->relocs[i].robj; 520 bo_va = radeon_vm_bo_find(vm, bo); 521 if (bo_va == NULL) { 522 dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm); 523 return -EINVAL; 524 } 525 526 r = radeon_vm_bo_update(rdev, bo_va, &bo->tbo.mem); 527 if (r) 528 return r; 529 530 radeon_sync_fence(&p->ib.sync, bo_va->last_pt_update); 531 } 532 533 return radeon_vm_clear_invalids(rdev, vm); 534 } 535 536 static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev, 537 struct radeon_cs_parser *parser) 538 { 539 struct radeon_fpriv *fpriv = parser->filp->driver_priv; 540 struct radeon_vm *vm = &fpriv->vm; 541 int r; 542 543 if (parser->chunk_ib == NULL) 544 return 0; 545 if ((parser->cs_flags & RADEON_CS_USE_VM) == 0) 546 return 0; 547 548 if (parser->const_ib.length_dw) { 549 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->const_ib); 550 if (r) { 551 return r; 552 } 553 } 554 555 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->ib); 556 if (r) { 557 return r; 558 } 559 560 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 561 radeon_uvd_note_usage(rdev); 562 563 mutex_lock(&vm->mutex); 564 r = radeon_bo_vm_update_pte(parser, vm); 565 if (r) { 566 goto out; 567 } 568 569 r = radeon_cs_sync_rings(parser); 570 if (r) { 571 if (r != -ERESTARTSYS) 572 DRM_ERROR("Failed to sync rings: %i\n", r); 573 goto out; 574 } 575 576 if ((rdev->family >= CHIP_TAHITI) && 577 (parser->chunk_const_ib != NULL)) { 578 r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib, true); 579 } else { 580 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true); 581 } 582 583 out: 584 mutex_unlock(&vm->mutex); 585 return r; 586 } 587 588 static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r) 589 { 590 if (r == -EDEADLK) { 591 r = radeon_gpu_reset(rdev); 592 if (!r) 593 r = -EAGAIN; 594 } 595 return r; 596 } 597 598 static int radeon_cs_ib_fill(struct radeon_device *rdev, struct radeon_cs_parser *parser) 599 { 600 struct radeon_cs_chunk *ib_chunk; 601 struct radeon_vm *vm = NULL; 602 int r; 603 604 if (parser->chunk_ib == NULL) 605 return 0; 606 607 if (parser->cs_flags & RADEON_CS_USE_VM) { 608 struct radeon_fpriv *fpriv = parser->filp->driver_priv; 609 vm = &fpriv->vm; 610 611 if ((rdev->family >= CHIP_TAHITI) && 612 (parser->chunk_const_ib != NULL)) { 613 ib_chunk = parser->chunk_const_ib; 614 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 615 DRM_ERROR("cs IB CONST too big: %d\n", ib_chunk->length_dw); 616 return -EINVAL; 617 } 618 r = radeon_ib_get(rdev, parser->ring, &parser->const_ib, 619 vm, ib_chunk->length_dw * 4); 620 if (r) { 621 DRM_ERROR("Failed to get const ib !\n"); 622 return r; 623 } 624 parser->const_ib.is_const_ib = true; 625 parser->const_ib.length_dw = ib_chunk->length_dw; 626 if (copy_from_user(parser->const_ib.ptr, 627 ib_chunk->user_ptr, 628 ib_chunk->length_dw * 4)) 629 return -EFAULT; 630 } 631 632 ib_chunk = parser->chunk_ib; 633 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 634 DRM_ERROR("cs IB too big: %d\n", ib_chunk->length_dw); 635 return -EINVAL; 636 } 637 } 638 ib_chunk = parser->chunk_ib; 639 640 r = radeon_ib_get(rdev, parser->ring, &parser->ib, 641 vm, ib_chunk->length_dw * 4); 642 if (r) { 643 DRM_ERROR("Failed to get ib !\n"); 644 return r; 645 } 646 parser->ib.length_dw = ib_chunk->length_dw; 647 if (ib_chunk->kdata) 648 memcpy(parser->ib.ptr, ib_chunk->kdata, ib_chunk->length_dw * 4); 649 else if (copy_from_user(parser->ib.ptr, ib_chunk->user_ptr, ib_chunk->length_dw * 4)) 650 return -EFAULT; 651 return 0; 652 } 653 654 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 655 { 656 struct radeon_device *rdev = dev->dev_private; 657 struct radeon_cs_parser parser; 658 int r; 659 660 down_read(&rdev->exclusive_lock); 661 if (!rdev->accel_working) { 662 up_read(&rdev->exclusive_lock); 663 return -EBUSY; 664 } 665 if (rdev->in_reset) { 666 up_read(&rdev->exclusive_lock); 667 r = radeon_gpu_reset(rdev); 668 if (!r) 669 r = -EAGAIN; 670 return r; 671 } 672 /* initialize parser */ 673 memset(&parser, 0, sizeof(struct radeon_cs_parser)); 674 parser.filp = filp; 675 parser.rdev = rdev; 676 parser.dev = rdev->dev; 677 parser.family = rdev->family; 678 r = radeon_cs_parser_init(&parser, data); 679 if (r) { 680 DRM_ERROR("Failed to initialize parser !\n"); 681 radeon_cs_parser_fini(&parser, r, false); 682 up_read(&rdev->exclusive_lock); 683 r = radeon_cs_handle_lockup(rdev, r); 684 return r; 685 } 686 687 r = radeon_cs_ib_fill(rdev, &parser); 688 if (!r) { 689 r = radeon_cs_parser_relocs(&parser); 690 if (r && r != -ERESTARTSYS) 691 DRM_ERROR("Failed to parse relocation %d!\n", r); 692 } 693 694 if (r) { 695 radeon_cs_parser_fini(&parser, r, false); 696 up_read(&rdev->exclusive_lock); 697 r = radeon_cs_handle_lockup(rdev, r); 698 return r; 699 } 700 701 trace_radeon_cs(&parser); 702 703 r = radeon_cs_ib_chunk(rdev, &parser); 704 if (r) { 705 goto out; 706 } 707 r = radeon_cs_ib_vm_chunk(rdev, &parser); 708 if (r) { 709 goto out; 710 } 711 out: 712 radeon_cs_parser_fini(&parser, r, true); 713 up_read(&rdev->exclusive_lock); 714 r = radeon_cs_handle_lockup(rdev, r); 715 return r; 716 } 717 718 /** 719 * radeon_cs_packet_parse() - parse cp packet and point ib index to next packet 720 * @parser: parser structure holding parsing context. 721 * @pkt: where to store packet information 722 * 723 * Assume that chunk_ib_index is properly set. Will return -EINVAL 724 * if packet is bigger than remaining ib size. or if packets is unknown. 725 **/ 726 int radeon_cs_packet_parse(struct radeon_cs_parser *p, 727 struct radeon_cs_packet *pkt, 728 unsigned idx) 729 { 730 struct radeon_cs_chunk *ib_chunk = p->chunk_ib; 731 struct radeon_device *rdev = p->rdev; 732 uint32_t header; 733 int ret = 0, i; 734 735 if (idx >= ib_chunk->length_dw) { 736 DRM_ERROR("Can not parse packet at %d after CS end %d !\n", 737 idx, ib_chunk->length_dw); 738 return -EINVAL; 739 } 740 header = radeon_get_ib_value(p, idx); 741 pkt->idx = idx; 742 pkt->type = RADEON_CP_PACKET_GET_TYPE(header); 743 pkt->count = RADEON_CP_PACKET_GET_COUNT(header); 744 pkt->one_reg_wr = 0; 745 switch (pkt->type) { 746 case RADEON_PACKET_TYPE0: 747 if (rdev->family < CHIP_R600) { 748 pkt->reg = R100_CP_PACKET0_GET_REG(header); 749 pkt->one_reg_wr = 750 RADEON_CP_PACKET0_GET_ONE_REG_WR(header); 751 } else 752 pkt->reg = R600_CP_PACKET0_GET_REG(header); 753 break; 754 case RADEON_PACKET_TYPE3: 755 pkt->opcode = RADEON_CP_PACKET3_GET_OPCODE(header); 756 break; 757 case RADEON_PACKET_TYPE2: 758 pkt->count = -1; 759 break; 760 default: 761 DRM_ERROR("Unknown packet type %d at %d !\n", pkt->type, idx); 762 ret = -EINVAL; 763 goto dump_ib; 764 } 765 if ((pkt->count + 1 + pkt->idx) >= ib_chunk->length_dw) { 766 DRM_ERROR("Packet (%d:%d:%d) end after CS buffer (%d) !\n", 767 pkt->idx, pkt->type, pkt->count, ib_chunk->length_dw); 768 ret = -EINVAL; 769 goto dump_ib; 770 } 771 return 0; 772 773 dump_ib: 774 for (i = 0; i < ib_chunk->length_dw; i++) { 775 if (i == idx) 776 printk("\t0x%08x <---\n", radeon_get_ib_value(p, i)); 777 else 778 printk("\t0x%08x\n", radeon_get_ib_value(p, i)); 779 } 780 return ret; 781 } 782 783 /** 784 * radeon_cs_packet_next_is_pkt3_nop() - test if the next packet is P3 NOP 785 * @p: structure holding the parser context. 786 * 787 * Check if the next packet is NOP relocation packet3. 788 **/ 789 bool radeon_cs_packet_next_is_pkt3_nop(struct radeon_cs_parser *p) 790 { 791 struct radeon_cs_packet p3reloc; 792 int r; 793 794 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 795 if (r) 796 return false; 797 if (p3reloc.type != RADEON_PACKET_TYPE3) 798 return false; 799 if (p3reloc.opcode != RADEON_PACKET3_NOP) 800 return false; 801 return true; 802 } 803 804 /** 805 * radeon_cs_dump_packet() - dump raw packet context 806 * @p: structure holding the parser context. 807 * @pkt: structure holding the packet. 808 * 809 * Used mostly for debugging and error reporting. 810 **/ 811 void radeon_cs_dump_packet(struct radeon_cs_parser *p, 812 struct radeon_cs_packet *pkt) 813 { 814 volatile uint32_t *ib; 815 unsigned i; 816 unsigned idx; 817 818 ib = p->ib.ptr; 819 idx = pkt->idx; 820 for (i = 0; i <= (pkt->count + 1); i++, idx++) 821 DRM_INFO("ib[%d]=0x%08X\n", idx, ib[idx]); 822 } 823 824 /** 825 * radeon_cs_packet_next_reloc() - parse next (should be reloc) packet 826 * @parser: parser structure holding parsing context. 827 * @data: pointer to relocation data 828 * @offset_start: starting offset 829 * @offset_mask: offset mask (to align start offset on) 830 * @reloc: reloc informations 831 * 832 * Check if next packet is relocation packet3, do bo validation and compute 833 * GPU offset using the provided start. 834 **/ 835 int radeon_cs_packet_next_reloc(struct radeon_cs_parser *p, 836 struct radeon_bo_list **cs_reloc, 837 int nomm) 838 { 839 struct radeon_cs_chunk *relocs_chunk; 840 struct radeon_cs_packet p3reloc; 841 unsigned idx; 842 int r; 843 844 if (p->chunk_relocs == NULL) { 845 DRM_ERROR("No relocation chunk !\n"); 846 return -EINVAL; 847 } 848 *cs_reloc = NULL; 849 relocs_chunk = p->chunk_relocs; 850 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 851 if (r) 852 return r; 853 p->idx += p3reloc.count + 2; 854 if (p3reloc.type != RADEON_PACKET_TYPE3 || 855 p3reloc.opcode != RADEON_PACKET3_NOP) { 856 DRM_ERROR("No packet3 for relocation for packet at %d.\n", 857 p3reloc.idx); 858 radeon_cs_dump_packet(p, &p3reloc); 859 return -EINVAL; 860 } 861 idx = radeon_get_ib_value(p, p3reloc.idx + 1); 862 if (idx >= relocs_chunk->length_dw) { 863 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n", 864 idx, relocs_chunk->length_dw); 865 radeon_cs_dump_packet(p, &p3reloc); 866 return -EINVAL; 867 } 868 /* FIXME: we assume reloc size is 4 dwords */ 869 if (nomm) { 870 *cs_reloc = p->relocs; 871 (*cs_reloc)->gpu_offset = 872 (u64)relocs_chunk->kdata[idx + 3] << 32; 873 (*cs_reloc)->gpu_offset |= relocs_chunk->kdata[idx + 0]; 874 } else 875 *cs_reloc = &p->relocs[(idx / 4)]; 876 return 0; 877 } 878