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 28 #include <linux/list_sort.h> 29 #include <linux/pci.h> 30 #include <linux/uaccess.h> 31 32 #include <drm/drm_device.h> 33 #include <drm/drm_file.h> 34 #include <drm/radeon_drm.h> 35 36 #include "radeon.h" 37 #include "radeon_reg.h" 38 #include "radeon_trace.h" 39 40 #define RADEON_CS_MAX_PRIORITY 32u 41 #define RADEON_CS_NUM_BUCKETS (RADEON_CS_MAX_PRIORITY + 1) 42 43 /* This is based on the bucket sort with O(n) time complexity. 44 * An item with priority "i" is added to bucket[i]. The lists are then 45 * concatenated in descending order. 46 */ 47 struct radeon_cs_buckets { 48 struct list_head bucket[RADEON_CS_NUM_BUCKETS]; 49 }; 50 51 static void radeon_cs_buckets_init(struct radeon_cs_buckets *b) 52 { 53 unsigned i; 54 55 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++) 56 INIT_LIST_HEAD(&b->bucket[i]); 57 } 58 59 static void radeon_cs_buckets_add(struct radeon_cs_buckets *b, 60 struct list_head *item, unsigned priority) 61 { 62 /* Since buffers which appear sooner in the relocation list are 63 * likely to be used more often than buffers which appear later 64 * in the list, the sort mustn't change the ordering of buffers 65 * with the same priority, i.e. it must be stable. 66 */ 67 list_add_tail(item, &b->bucket[min(priority, RADEON_CS_MAX_PRIORITY)]); 68 } 69 70 static void radeon_cs_buckets_get_list(struct radeon_cs_buckets *b, 71 struct list_head *out_list) 72 { 73 unsigned i; 74 75 /* Connect the sorted buckets in the output list. */ 76 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++) { 77 list_splice(&b->bucket[i], out_list); 78 } 79 } 80 81 static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) 82 { 83 struct radeon_cs_chunk *chunk; 84 struct radeon_cs_buckets buckets; 85 unsigned i; 86 bool need_mmap_lock = false; 87 int r; 88 89 if (p->chunk_relocs == NULL) { 90 return 0; 91 } 92 chunk = p->chunk_relocs; 93 p->dma_reloc_idx = 0; 94 /* FIXME: we assume that each relocs use 4 dwords */ 95 p->nrelocs = chunk->length_dw / 4; 96 p->relocs = kvmalloc_array(p->nrelocs, sizeof(struct radeon_bo_list), 97 GFP_KERNEL | __GFP_ZERO); 98 if (p->relocs == NULL) { 99 return -ENOMEM; 100 } 101 102 radeon_cs_buckets_init(&buckets); 103 104 for (i = 0; i < p->nrelocs; i++) { 105 struct drm_radeon_cs_reloc *r; 106 struct drm_gem_object *gobj; 107 unsigned priority; 108 109 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4]; 110 gobj = drm_gem_object_lookup(p->filp, r->handle); 111 if (gobj == NULL) { 112 DRM_ERROR("gem object lookup failed 0x%x\n", 113 r->handle); 114 return -ENOENT; 115 } 116 p->relocs[i].robj = gem_to_radeon_bo(gobj); 117 118 /* The userspace buffer priorities are from 0 to 15. A higher 119 * number means the buffer is more important. 120 * Also, the buffers used for write have a higher priority than 121 * the buffers used for read only, which doubles the range 122 * to 0 to 31. 32 is reserved for the kernel driver. 123 */ 124 priority = (r->flags & RADEON_RELOC_PRIO_MASK) * 2 125 + !!r->write_domain; 126 127 /* The first reloc of an UVD job is the msg and that must be in 128 * VRAM, the second reloc is the DPB and for WMV that must be in 129 * VRAM as well. Also put everything into VRAM on AGP cards and older 130 * IGP chips to avoid image corruptions 131 */ 132 if (p->ring == R600_RING_TYPE_UVD_INDEX && 133 (i <= 0 || pci_find_capability(p->rdev->ddev->pdev, 134 PCI_CAP_ID_AGP) || 135 p->rdev->family == CHIP_RS780 || 136 p->rdev->family == CHIP_RS880)) { 137 138 /* TODO: is this still needed for NI+ ? */ 139 p->relocs[i].preferred_domains = 140 RADEON_GEM_DOMAIN_VRAM; 141 142 p->relocs[i].allowed_domains = 143 RADEON_GEM_DOMAIN_VRAM; 144 145 /* prioritize this over any other relocation */ 146 priority = RADEON_CS_MAX_PRIORITY; 147 } else { 148 uint32_t domain = r->write_domain ? 149 r->write_domain : r->read_domains; 150 151 if (domain & RADEON_GEM_DOMAIN_CPU) { 152 DRM_ERROR("RADEON_GEM_DOMAIN_CPU is not valid " 153 "for command submission\n"); 154 return -EINVAL; 155 } 156 157 p->relocs[i].preferred_domains = domain; 158 if (domain == RADEON_GEM_DOMAIN_VRAM) 159 domain |= RADEON_GEM_DOMAIN_GTT; 160 p->relocs[i].allowed_domains = domain; 161 } 162 163 if (radeon_ttm_tt_has_userptr(p->relocs[i].robj->tbo.ttm)) { 164 uint32_t domain = p->relocs[i].preferred_domains; 165 if (!(domain & RADEON_GEM_DOMAIN_GTT)) { 166 DRM_ERROR("Only RADEON_GEM_DOMAIN_GTT is " 167 "allowed for userptr BOs\n"); 168 return -EINVAL; 169 } 170 need_mmap_lock = true; 171 domain = RADEON_GEM_DOMAIN_GTT; 172 p->relocs[i].preferred_domains = domain; 173 p->relocs[i].allowed_domains = domain; 174 } 175 176 /* Objects shared as dma-bufs cannot be moved to VRAM */ 177 if (p->relocs[i].robj->prime_shared_count) { 178 p->relocs[i].allowed_domains &= ~RADEON_GEM_DOMAIN_VRAM; 179 if (!p->relocs[i].allowed_domains) { 180 DRM_ERROR("BO associated with dma-buf cannot " 181 "be moved to VRAM\n"); 182 return -EINVAL; 183 } 184 } 185 186 p->relocs[i].tv.bo = &p->relocs[i].robj->tbo; 187 p->relocs[i].tv.num_shared = !r->write_domain; 188 189 radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head, 190 priority); 191 } 192 193 radeon_cs_buckets_get_list(&buckets, &p->validated); 194 195 if (p->cs_flags & RADEON_CS_USE_VM) 196 p->vm_bos = radeon_vm_get_bos(p->rdev, p->ib.vm, 197 &p->validated); 198 if (need_mmap_lock) 199 mmap_read_lock(current->mm); 200 201 r = radeon_bo_list_validate(p->rdev, &p->ticket, &p->validated, p->ring); 202 203 if (need_mmap_lock) 204 mmap_read_unlock(current->mm); 205 206 return r; 207 } 208 209 static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority) 210 { 211 p->priority = priority; 212 213 switch (ring) { 214 default: 215 DRM_ERROR("unknown ring id: %d\n", ring); 216 return -EINVAL; 217 case RADEON_CS_RING_GFX: 218 p->ring = RADEON_RING_TYPE_GFX_INDEX; 219 break; 220 case RADEON_CS_RING_COMPUTE: 221 if (p->rdev->family >= CHIP_TAHITI) { 222 if (p->priority > 0) 223 p->ring = CAYMAN_RING_TYPE_CP1_INDEX; 224 else 225 p->ring = CAYMAN_RING_TYPE_CP2_INDEX; 226 } else 227 p->ring = RADEON_RING_TYPE_GFX_INDEX; 228 break; 229 case RADEON_CS_RING_DMA: 230 if (p->rdev->family >= CHIP_CAYMAN) { 231 if (p->priority > 0) 232 p->ring = R600_RING_TYPE_DMA_INDEX; 233 else 234 p->ring = CAYMAN_RING_TYPE_DMA1_INDEX; 235 } else if (p->rdev->family >= CHIP_RV770) { 236 p->ring = R600_RING_TYPE_DMA_INDEX; 237 } else { 238 return -EINVAL; 239 } 240 break; 241 case RADEON_CS_RING_UVD: 242 p->ring = R600_RING_TYPE_UVD_INDEX; 243 break; 244 case RADEON_CS_RING_VCE: 245 /* TODO: only use the low priority ring for now */ 246 p->ring = TN_RING_TYPE_VCE1_INDEX; 247 break; 248 } 249 return 0; 250 } 251 252 static int radeon_cs_sync_rings(struct radeon_cs_parser *p) 253 { 254 struct radeon_bo_list *reloc; 255 int r; 256 257 list_for_each_entry(reloc, &p->validated, tv.head) { 258 struct dma_resv *resv; 259 260 resv = reloc->robj->tbo.base.resv; 261 r = radeon_sync_resv(p->rdev, &p->ib.sync, resv, 262 reloc->tv.num_shared); 263 if (r) 264 return r; 265 } 266 return 0; 267 } 268 269 /* XXX: note that this is called from the legacy UMS CS ioctl as well */ 270 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) 271 { 272 struct drm_radeon_cs *cs = data; 273 uint64_t *chunk_array_ptr; 274 unsigned size, i; 275 u32 ring = RADEON_CS_RING_GFX; 276 s32 priority = 0; 277 278 INIT_LIST_HEAD(&p->validated); 279 280 if (!cs->num_chunks) { 281 return 0; 282 } 283 284 /* get chunks */ 285 p->idx = 0; 286 p->ib.sa_bo = NULL; 287 p->const_ib.sa_bo = NULL; 288 p->chunk_ib = NULL; 289 p->chunk_relocs = NULL; 290 p->chunk_flags = NULL; 291 p->chunk_const_ib = NULL; 292 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL); 293 if (p->chunks_array == NULL) { 294 return -ENOMEM; 295 } 296 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks); 297 if (copy_from_user(p->chunks_array, chunk_array_ptr, 298 sizeof(uint64_t)*cs->num_chunks)) { 299 return -EFAULT; 300 } 301 p->cs_flags = 0; 302 p->nchunks = cs->num_chunks; 303 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL); 304 if (p->chunks == NULL) { 305 return -ENOMEM; 306 } 307 for (i = 0; i < p->nchunks; i++) { 308 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL; 309 struct drm_radeon_cs_chunk user_chunk; 310 uint32_t __user *cdata; 311 312 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i]; 313 if (copy_from_user(&user_chunk, chunk_ptr, 314 sizeof(struct drm_radeon_cs_chunk))) { 315 return -EFAULT; 316 } 317 p->chunks[i].length_dw = user_chunk.length_dw; 318 if (user_chunk.chunk_id == RADEON_CHUNK_ID_RELOCS) { 319 p->chunk_relocs = &p->chunks[i]; 320 } 321 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) { 322 p->chunk_ib = &p->chunks[i]; 323 /* zero length 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_CONST_IB) { 328 p->chunk_const_ib = &p->chunks[i]; 329 /* zero length CONST IB isn't useful */ 330 if (p->chunks[i].length_dw == 0) 331 return -EINVAL; 332 } 333 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) { 334 p->chunk_flags = &p->chunks[i]; 335 /* zero length flags aren't useful */ 336 if (p->chunks[i].length_dw == 0) 337 return -EINVAL; 338 } 339 340 size = p->chunks[i].length_dw; 341 cdata = (void __user *)(unsigned long)user_chunk.chunk_data; 342 p->chunks[i].user_ptr = cdata; 343 if (user_chunk.chunk_id == RADEON_CHUNK_ID_CONST_IB) 344 continue; 345 346 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) { 347 if (!p->rdev || !(p->rdev->flags & RADEON_IS_AGP)) 348 continue; 349 } 350 351 p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t), GFP_KERNEL); 352 size *= sizeof(uint32_t); 353 if (p->chunks[i].kdata == NULL) { 354 return -ENOMEM; 355 } 356 if (copy_from_user(p->chunks[i].kdata, cdata, size)) { 357 return -EFAULT; 358 } 359 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) { 360 p->cs_flags = p->chunks[i].kdata[0]; 361 if (p->chunks[i].length_dw > 1) 362 ring = p->chunks[i].kdata[1]; 363 if (p->chunks[i].length_dw > 2) 364 priority = (s32)p->chunks[i].kdata[2]; 365 } 366 } 367 368 /* these are KMS only */ 369 if (p->rdev) { 370 if ((p->cs_flags & RADEON_CS_USE_VM) && 371 !p->rdev->vm_manager.enabled) { 372 DRM_ERROR("VM not active on asic!\n"); 373 return -EINVAL; 374 } 375 376 if (radeon_cs_get_ring(p, ring, priority)) 377 return -EINVAL; 378 379 /* we only support VM on some SI+ rings */ 380 if ((p->cs_flags & RADEON_CS_USE_VM) == 0) { 381 if (p->rdev->asic->ring[p->ring]->cs_parse == NULL) { 382 DRM_ERROR("Ring %d requires VM!\n", p->ring); 383 return -EINVAL; 384 } 385 } else { 386 if (p->rdev->asic->ring[p->ring]->ib_parse == NULL) { 387 DRM_ERROR("VM not supported on ring %d!\n", 388 p->ring); 389 return -EINVAL; 390 } 391 } 392 } 393 394 return 0; 395 } 396 397 static int cmp_size_smaller_first(void *priv, struct list_head *a, 398 struct list_head *b) 399 { 400 struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, tv.head); 401 struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head); 402 403 /* Sort A before B if A is smaller. */ 404 return (int)la->robj->tbo.num_pages - (int)lb->robj->tbo.num_pages; 405 } 406 407 /** 408 * cs_parser_fini() - clean parser states 409 * @parser: parser structure holding parsing context. 410 * @error: error number 411 * 412 * If error is set than unvalidate buffer, otherwise just free memory 413 * used by parsing context. 414 **/ 415 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff) 416 { 417 unsigned i; 418 419 if (!error) { 420 /* Sort the buffer list from the smallest to largest buffer, 421 * which affects the order of buffers in the LRU list. 422 * This assures that the smallest buffers are added first 423 * to the LRU list, so they are likely to be later evicted 424 * first, instead of large buffers whose eviction is more 425 * expensive. 426 * 427 * This slightly lowers the number of bytes moved by TTM 428 * per frame under memory pressure. 429 */ 430 list_sort(NULL, &parser->validated, cmp_size_smaller_first); 431 432 ttm_eu_fence_buffer_objects(&parser->ticket, 433 &parser->validated, 434 &parser->ib.fence->base); 435 } else if (backoff) { 436 ttm_eu_backoff_reservation(&parser->ticket, 437 &parser->validated); 438 } 439 440 if (parser->relocs != NULL) { 441 for (i = 0; i < parser->nrelocs; i++) { 442 struct radeon_bo *bo = parser->relocs[i].robj; 443 if (bo == NULL) 444 continue; 445 446 drm_gem_object_put(&bo->tbo.base); 447 } 448 } 449 kfree(parser->track); 450 kvfree(parser->relocs); 451 kvfree(parser->vm_bos); 452 for (i = 0; i < parser->nchunks; i++) 453 kvfree(parser->chunks[i].kdata); 454 kfree(parser->chunks); 455 kfree(parser->chunks_array); 456 radeon_ib_free(parser->rdev, &parser->ib); 457 radeon_ib_free(parser->rdev, &parser->const_ib); 458 } 459 460 static int radeon_cs_ib_chunk(struct radeon_device *rdev, 461 struct radeon_cs_parser *parser) 462 { 463 int r; 464 465 if (parser->chunk_ib == NULL) 466 return 0; 467 468 if (parser->cs_flags & RADEON_CS_USE_VM) 469 return 0; 470 471 r = radeon_cs_parse(rdev, parser->ring, parser); 472 if (r || parser->parser_error) { 473 DRM_ERROR("Invalid command stream !\n"); 474 return r; 475 } 476 477 r = radeon_cs_sync_rings(parser); 478 if (r) { 479 if (r != -ERESTARTSYS) 480 DRM_ERROR("Failed to sync rings: %i\n", r); 481 return r; 482 } 483 484 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 485 radeon_uvd_note_usage(rdev); 486 else if ((parser->ring == TN_RING_TYPE_VCE1_INDEX) || 487 (parser->ring == TN_RING_TYPE_VCE2_INDEX)) 488 radeon_vce_note_usage(rdev); 489 490 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true); 491 if (r) { 492 DRM_ERROR("Failed to schedule IB !\n"); 493 } 494 return r; 495 } 496 497 static int radeon_bo_vm_update_pte(struct radeon_cs_parser *p, 498 struct radeon_vm *vm) 499 { 500 struct radeon_device *rdev = p->rdev; 501 struct radeon_bo_va *bo_va; 502 int i, r; 503 504 r = radeon_vm_update_page_directory(rdev, vm); 505 if (r) 506 return r; 507 508 r = radeon_vm_clear_freed(rdev, vm); 509 if (r) 510 return r; 511 512 if (vm->ib_bo_va == NULL) { 513 DRM_ERROR("Tmp BO not in VM!\n"); 514 return -EINVAL; 515 } 516 517 r = radeon_vm_bo_update(rdev, vm->ib_bo_va, 518 &rdev->ring_tmp_bo.bo->tbo.mem); 519 if (r) 520 return r; 521 522 for (i = 0; i < p->nrelocs; i++) { 523 struct radeon_bo *bo; 524 525 bo = p->relocs[i].robj; 526 bo_va = radeon_vm_bo_find(vm, bo); 527 if (bo_va == NULL) { 528 dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm); 529 return -EINVAL; 530 } 531 532 r = radeon_vm_bo_update(rdev, bo_va, &bo->tbo.mem); 533 if (r) 534 return r; 535 536 radeon_sync_fence(&p->ib.sync, bo_va->last_pt_update); 537 } 538 539 return radeon_vm_clear_invalids(rdev, vm); 540 } 541 542 static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev, 543 struct radeon_cs_parser *parser) 544 { 545 struct radeon_fpriv *fpriv = parser->filp->driver_priv; 546 struct radeon_vm *vm = &fpriv->vm; 547 int r; 548 549 if (parser->chunk_ib == NULL) 550 return 0; 551 if ((parser->cs_flags & RADEON_CS_USE_VM) == 0) 552 return 0; 553 554 if (parser->const_ib.length_dw) { 555 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->const_ib); 556 if (r) { 557 return r; 558 } 559 } 560 561 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->ib); 562 if (r) { 563 return r; 564 } 565 566 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 567 radeon_uvd_note_usage(rdev); 568 569 mutex_lock(&vm->mutex); 570 r = radeon_bo_vm_update_pte(parser, vm); 571 if (r) { 572 goto out; 573 } 574 575 r = radeon_cs_sync_rings(parser); 576 if (r) { 577 if (r != -ERESTARTSYS) 578 DRM_ERROR("Failed to sync rings: %i\n", r); 579 goto out; 580 } 581 582 if ((rdev->family >= CHIP_TAHITI) && 583 (parser->chunk_const_ib != NULL)) { 584 r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib, true); 585 } else { 586 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true); 587 } 588 589 out: 590 mutex_unlock(&vm->mutex); 591 return r; 592 } 593 594 static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r) 595 { 596 if (r == -EDEADLK) { 597 r = radeon_gpu_reset(rdev); 598 if (!r) 599 r = -EAGAIN; 600 } 601 return r; 602 } 603 604 static int radeon_cs_ib_fill(struct radeon_device *rdev, struct radeon_cs_parser *parser) 605 { 606 struct radeon_cs_chunk *ib_chunk; 607 struct radeon_vm *vm = NULL; 608 int r; 609 610 if (parser->chunk_ib == NULL) 611 return 0; 612 613 if (parser->cs_flags & RADEON_CS_USE_VM) { 614 struct radeon_fpriv *fpriv = parser->filp->driver_priv; 615 vm = &fpriv->vm; 616 617 if ((rdev->family >= CHIP_TAHITI) && 618 (parser->chunk_const_ib != NULL)) { 619 ib_chunk = parser->chunk_const_ib; 620 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 621 DRM_ERROR("cs IB CONST too big: %d\n", ib_chunk->length_dw); 622 return -EINVAL; 623 } 624 r = radeon_ib_get(rdev, parser->ring, &parser->const_ib, 625 vm, ib_chunk->length_dw * 4); 626 if (r) { 627 DRM_ERROR("Failed to get const ib !\n"); 628 return r; 629 } 630 parser->const_ib.is_const_ib = true; 631 parser->const_ib.length_dw = ib_chunk->length_dw; 632 if (copy_from_user(parser->const_ib.ptr, 633 ib_chunk->user_ptr, 634 ib_chunk->length_dw * 4)) 635 return -EFAULT; 636 } 637 638 ib_chunk = parser->chunk_ib; 639 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 640 DRM_ERROR("cs IB too big: %d\n", ib_chunk->length_dw); 641 return -EINVAL; 642 } 643 } 644 ib_chunk = parser->chunk_ib; 645 646 r = radeon_ib_get(rdev, parser->ring, &parser->ib, 647 vm, ib_chunk->length_dw * 4); 648 if (r) { 649 DRM_ERROR("Failed to get ib !\n"); 650 return r; 651 } 652 parser->ib.length_dw = ib_chunk->length_dw; 653 if (ib_chunk->kdata) 654 memcpy(parser->ib.ptr, ib_chunk->kdata, ib_chunk->length_dw * 4); 655 else if (copy_from_user(parser->ib.ptr, ib_chunk->user_ptr, ib_chunk->length_dw * 4)) 656 return -EFAULT; 657 return 0; 658 } 659 660 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 661 { 662 struct radeon_device *rdev = dev->dev_private; 663 struct radeon_cs_parser parser; 664 int r; 665 666 down_read(&rdev->exclusive_lock); 667 if (!rdev->accel_working) { 668 up_read(&rdev->exclusive_lock); 669 return -EBUSY; 670 } 671 if (rdev->in_reset) { 672 up_read(&rdev->exclusive_lock); 673 r = radeon_gpu_reset(rdev); 674 if (!r) 675 r = -EAGAIN; 676 return r; 677 } 678 /* initialize parser */ 679 memset(&parser, 0, sizeof(struct radeon_cs_parser)); 680 parser.filp = filp; 681 parser.rdev = rdev; 682 parser.dev = rdev->dev; 683 parser.family = rdev->family; 684 r = radeon_cs_parser_init(&parser, data); 685 if (r) { 686 DRM_ERROR("Failed to initialize parser !\n"); 687 radeon_cs_parser_fini(&parser, r, false); 688 up_read(&rdev->exclusive_lock); 689 r = radeon_cs_handle_lockup(rdev, r); 690 return r; 691 } 692 693 r = radeon_cs_ib_fill(rdev, &parser); 694 if (!r) { 695 r = radeon_cs_parser_relocs(&parser); 696 if (r && r != -ERESTARTSYS) 697 DRM_ERROR("Failed to parse relocation %d!\n", r); 698 } 699 700 if (r) { 701 radeon_cs_parser_fini(&parser, r, false); 702 up_read(&rdev->exclusive_lock); 703 r = radeon_cs_handle_lockup(rdev, r); 704 return r; 705 } 706 707 trace_radeon_cs(&parser); 708 709 r = radeon_cs_ib_chunk(rdev, &parser); 710 if (r) { 711 goto out; 712 } 713 r = radeon_cs_ib_vm_chunk(rdev, &parser); 714 if (r) { 715 goto out; 716 } 717 out: 718 radeon_cs_parser_fini(&parser, r, true); 719 up_read(&rdev->exclusive_lock); 720 r = radeon_cs_handle_lockup(rdev, r); 721 return r; 722 } 723 724 /** 725 * radeon_cs_packet_parse() - parse cp packet and point ib index to next packet 726 * @parser: parser structure holding parsing context. 727 * @pkt: where to store packet information 728 * 729 * Assume that chunk_ib_index is properly set. Will return -EINVAL 730 * if packet is bigger than remaining ib size. or if packets is unknown. 731 **/ 732 int radeon_cs_packet_parse(struct radeon_cs_parser *p, 733 struct radeon_cs_packet *pkt, 734 unsigned idx) 735 { 736 struct radeon_cs_chunk *ib_chunk = p->chunk_ib; 737 struct radeon_device *rdev = p->rdev; 738 uint32_t header; 739 int ret = 0, i; 740 741 if (idx >= ib_chunk->length_dw) { 742 DRM_ERROR("Can not parse packet at %d after CS end %d !\n", 743 idx, ib_chunk->length_dw); 744 return -EINVAL; 745 } 746 header = radeon_get_ib_value(p, idx); 747 pkt->idx = idx; 748 pkt->type = RADEON_CP_PACKET_GET_TYPE(header); 749 pkt->count = RADEON_CP_PACKET_GET_COUNT(header); 750 pkt->one_reg_wr = 0; 751 switch (pkt->type) { 752 case RADEON_PACKET_TYPE0: 753 if (rdev->family < CHIP_R600) { 754 pkt->reg = R100_CP_PACKET0_GET_REG(header); 755 pkt->one_reg_wr = 756 RADEON_CP_PACKET0_GET_ONE_REG_WR(header); 757 } else 758 pkt->reg = R600_CP_PACKET0_GET_REG(header); 759 break; 760 case RADEON_PACKET_TYPE3: 761 pkt->opcode = RADEON_CP_PACKET3_GET_OPCODE(header); 762 break; 763 case RADEON_PACKET_TYPE2: 764 pkt->count = -1; 765 break; 766 default: 767 DRM_ERROR("Unknown packet type %d at %d !\n", pkt->type, idx); 768 ret = -EINVAL; 769 goto dump_ib; 770 } 771 if ((pkt->count + 1 + pkt->idx) >= ib_chunk->length_dw) { 772 DRM_ERROR("Packet (%d:%d:%d) end after CS buffer (%d) !\n", 773 pkt->idx, pkt->type, pkt->count, ib_chunk->length_dw); 774 ret = -EINVAL; 775 goto dump_ib; 776 } 777 return 0; 778 779 dump_ib: 780 for (i = 0; i < ib_chunk->length_dw; i++) { 781 if (i == idx) 782 printk("\t0x%08x <---\n", radeon_get_ib_value(p, i)); 783 else 784 printk("\t0x%08x\n", radeon_get_ib_value(p, i)); 785 } 786 return ret; 787 } 788 789 /** 790 * radeon_cs_packet_next_is_pkt3_nop() - test if the next packet is P3 NOP 791 * @p: structure holding the parser context. 792 * 793 * Check if the next packet is NOP relocation packet3. 794 **/ 795 bool radeon_cs_packet_next_is_pkt3_nop(struct radeon_cs_parser *p) 796 { 797 struct radeon_cs_packet p3reloc; 798 int r; 799 800 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 801 if (r) 802 return false; 803 if (p3reloc.type != RADEON_PACKET_TYPE3) 804 return false; 805 if (p3reloc.opcode != RADEON_PACKET3_NOP) 806 return false; 807 return true; 808 } 809 810 /** 811 * radeon_cs_dump_packet() - dump raw packet context 812 * @p: structure holding the parser context. 813 * @pkt: structure holding the packet. 814 * 815 * Used mostly for debugging and error reporting. 816 **/ 817 void radeon_cs_dump_packet(struct radeon_cs_parser *p, 818 struct radeon_cs_packet *pkt) 819 { 820 volatile uint32_t *ib; 821 unsigned i; 822 unsigned idx; 823 824 ib = p->ib.ptr; 825 idx = pkt->idx; 826 for (i = 0; i <= (pkt->count + 1); i++, idx++) 827 DRM_INFO("ib[%d]=0x%08X\n", idx, ib[idx]); 828 } 829 830 /** 831 * radeon_cs_packet_next_reloc() - parse next (should be reloc) packet 832 * @parser: parser structure holding parsing context. 833 * @data: pointer to relocation data 834 * @offset_start: starting offset 835 * @offset_mask: offset mask (to align start offset on) 836 * @reloc: reloc informations 837 * 838 * Check if next packet is relocation packet3, do bo validation and compute 839 * GPU offset using the provided start. 840 **/ 841 int radeon_cs_packet_next_reloc(struct radeon_cs_parser *p, 842 struct radeon_bo_list **cs_reloc, 843 int nomm) 844 { 845 struct radeon_cs_chunk *relocs_chunk; 846 struct radeon_cs_packet p3reloc; 847 unsigned idx; 848 int r; 849 850 if (p->chunk_relocs == NULL) { 851 DRM_ERROR("No relocation chunk !\n"); 852 return -EINVAL; 853 } 854 *cs_reloc = NULL; 855 relocs_chunk = p->chunk_relocs; 856 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 857 if (r) 858 return r; 859 p->idx += p3reloc.count + 2; 860 if (p3reloc.type != RADEON_PACKET_TYPE3 || 861 p3reloc.opcode != RADEON_PACKET3_NOP) { 862 DRM_ERROR("No packet3 for relocation for packet at %d.\n", 863 p3reloc.idx); 864 radeon_cs_dump_packet(p, &p3reloc); 865 return -EINVAL; 866 } 867 idx = radeon_get_ib_value(p, p3reloc.idx + 1); 868 if (idx >= relocs_chunk->length_dw) { 869 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n", 870 idx, relocs_chunk->length_dw); 871 radeon_cs_dump_packet(p, &p3reloc); 872 return -EINVAL; 873 } 874 /* FIXME: we assume reloc size is 4 dwords */ 875 if (nomm) { 876 *cs_reloc = p->relocs; 877 (*cs_reloc)->gpu_offset = 878 (u64)relocs_chunk->kdata[idx + 3] << 32; 879 (*cs_reloc)->gpu_offset |= relocs_chunk->kdata[idx + 0]; 880 } else 881 *cs_reloc = &p->relocs[(idx / 4)]; 882 return 0; 883 } 884