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 <drm/drmP.h> 28 #include <drm/radeon_drm.h> 29 #include "radeon_reg.h" 30 #include "radeon.h" 31 #include "radeon_trace.h" 32 33 static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) 34 { 35 struct drm_device *ddev = p->rdev->ddev; 36 struct radeon_cs_chunk *chunk; 37 unsigned i, j; 38 bool duplicate; 39 40 if (p->chunk_relocs_idx == -1) { 41 return 0; 42 } 43 chunk = &p->chunks[p->chunk_relocs_idx]; 44 p->dma_reloc_idx = 0; 45 /* FIXME: we assume that each relocs use 4 dwords */ 46 p->nrelocs = chunk->length_dw / 4; 47 p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL); 48 if (p->relocs_ptr == NULL) { 49 return -ENOMEM; 50 } 51 p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL); 52 if (p->relocs == NULL) { 53 return -ENOMEM; 54 } 55 for (i = 0; i < p->nrelocs; i++) { 56 struct drm_radeon_cs_reloc *r; 57 58 duplicate = false; 59 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4]; 60 for (j = 0; j < i; j++) { 61 if (r->handle == p->relocs[j].handle) { 62 p->relocs_ptr[i] = &p->relocs[j]; 63 duplicate = true; 64 break; 65 } 66 } 67 if (duplicate) { 68 p->relocs[i].handle = 0; 69 continue; 70 } 71 72 p->relocs[i].gobj = drm_gem_object_lookup(ddev, p->filp, 73 r->handle); 74 if (p->relocs[i].gobj == NULL) { 75 DRM_ERROR("gem object lookup failed 0x%x\n", 76 r->handle); 77 return -ENOENT; 78 } 79 p->relocs_ptr[i] = &p->relocs[i]; 80 p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj); 81 p->relocs[i].lobj.bo = p->relocs[i].robj; 82 p->relocs[i].lobj.written = !!r->write_domain; 83 84 /* the first reloc of an UVD job is the msg and that must be in 85 VRAM, also but everything into VRAM on AGP cards to avoid 86 image corruptions */ 87 if (p->ring == R600_RING_TYPE_UVD_INDEX && 88 (i == 0 || drm_pci_device_is_agp(p->rdev->ddev))) { 89 /* TODO: is this still needed for NI+ ? */ 90 p->relocs[i].lobj.domain = 91 RADEON_GEM_DOMAIN_VRAM; 92 93 p->relocs[i].lobj.alt_domain = 94 RADEON_GEM_DOMAIN_VRAM; 95 96 } else { 97 uint32_t domain = r->write_domain ? 98 r->write_domain : r->read_domains; 99 100 p->relocs[i].lobj.domain = domain; 101 if (domain == RADEON_GEM_DOMAIN_VRAM) 102 domain |= RADEON_GEM_DOMAIN_GTT; 103 p->relocs[i].lobj.alt_domain = domain; 104 } 105 106 p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo; 107 p->relocs[i].handle = r->handle; 108 109 radeon_bo_list_add_object(&p->relocs[i].lobj, 110 &p->validated); 111 } 112 return radeon_bo_list_validate(&p->ticket, &p->validated, p->ring); 113 } 114 115 static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority) 116 { 117 p->priority = priority; 118 119 switch (ring) { 120 default: 121 DRM_ERROR("unknown ring id: %d\n", ring); 122 return -EINVAL; 123 case RADEON_CS_RING_GFX: 124 p->ring = RADEON_RING_TYPE_GFX_INDEX; 125 break; 126 case RADEON_CS_RING_COMPUTE: 127 if (p->rdev->family >= CHIP_TAHITI) { 128 if (p->priority > 0) 129 p->ring = CAYMAN_RING_TYPE_CP1_INDEX; 130 else 131 p->ring = CAYMAN_RING_TYPE_CP2_INDEX; 132 } else 133 p->ring = RADEON_RING_TYPE_GFX_INDEX; 134 break; 135 case RADEON_CS_RING_DMA: 136 if (p->rdev->family >= CHIP_CAYMAN) { 137 if (p->priority > 0) 138 p->ring = R600_RING_TYPE_DMA_INDEX; 139 else 140 p->ring = CAYMAN_RING_TYPE_DMA1_INDEX; 141 } else if (p->rdev->family >= CHIP_R600) { 142 p->ring = R600_RING_TYPE_DMA_INDEX; 143 } else { 144 return -EINVAL; 145 } 146 break; 147 case RADEON_CS_RING_UVD: 148 p->ring = R600_RING_TYPE_UVD_INDEX; 149 break; 150 } 151 return 0; 152 } 153 154 static void radeon_cs_sync_rings(struct radeon_cs_parser *p) 155 { 156 int i; 157 158 for (i = 0; i < p->nrelocs; i++) { 159 if (!p->relocs[i].robj) 160 continue; 161 162 radeon_ib_sync_to(&p->ib, p->relocs[i].robj->tbo.sync_obj); 163 } 164 } 165 166 /* XXX: note that this is called from the legacy UMS CS ioctl as well */ 167 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) 168 { 169 struct drm_radeon_cs *cs = data; 170 uint64_t *chunk_array_ptr; 171 unsigned size, i; 172 u32 ring = RADEON_CS_RING_GFX; 173 s32 priority = 0; 174 175 if (!cs->num_chunks) { 176 return 0; 177 } 178 /* get chunks */ 179 INIT_LIST_HEAD(&p->validated); 180 p->idx = 0; 181 p->ib.sa_bo = NULL; 182 p->ib.semaphore = NULL; 183 p->const_ib.sa_bo = NULL; 184 p->const_ib.semaphore = NULL; 185 p->chunk_ib_idx = -1; 186 p->chunk_relocs_idx = -1; 187 p->chunk_flags_idx = -1; 188 p->chunk_const_ib_idx = -1; 189 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL); 190 if (p->chunks_array == NULL) { 191 return -ENOMEM; 192 } 193 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks); 194 if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr, 195 sizeof(uint64_t)*cs->num_chunks)) { 196 return -EFAULT; 197 } 198 p->cs_flags = 0; 199 p->nchunks = cs->num_chunks; 200 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL); 201 if (p->chunks == NULL) { 202 return -ENOMEM; 203 } 204 for (i = 0; i < p->nchunks; i++) { 205 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL; 206 struct drm_radeon_cs_chunk user_chunk; 207 uint32_t __user *cdata; 208 209 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i]; 210 if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr, 211 sizeof(struct drm_radeon_cs_chunk))) { 212 return -EFAULT; 213 } 214 p->chunks[i].length_dw = user_chunk.length_dw; 215 p->chunks[i].kdata = NULL; 216 p->chunks[i].chunk_id = user_chunk.chunk_id; 217 p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data; 218 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) { 219 p->chunk_relocs_idx = i; 220 } 221 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) { 222 p->chunk_ib_idx = i; 223 /* zero length IB isn't useful */ 224 if (p->chunks[i].length_dw == 0) 225 return -EINVAL; 226 } 227 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_CONST_IB) { 228 p->chunk_const_ib_idx = i; 229 /* zero length CONST IB isn't useful */ 230 if (p->chunks[i].length_dw == 0) 231 return -EINVAL; 232 } 233 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) { 234 p->chunk_flags_idx = i; 235 /* zero length flags aren't useful */ 236 if (p->chunks[i].length_dw == 0) 237 return -EINVAL; 238 } 239 240 cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data; 241 if ((p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) || 242 (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS)) { 243 size = p->chunks[i].length_dw * sizeof(uint32_t); 244 p->chunks[i].kdata = kmalloc(size, GFP_KERNEL); 245 if (p->chunks[i].kdata == NULL) { 246 return -ENOMEM; 247 } 248 if (DRM_COPY_FROM_USER(p->chunks[i].kdata, 249 p->chunks[i].user_ptr, size)) { 250 return -EFAULT; 251 } 252 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) { 253 p->cs_flags = p->chunks[i].kdata[0]; 254 if (p->chunks[i].length_dw > 1) 255 ring = p->chunks[i].kdata[1]; 256 if (p->chunks[i].length_dw > 2) 257 priority = (s32)p->chunks[i].kdata[2]; 258 } 259 } 260 } 261 262 /* these are KMS only */ 263 if (p->rdev) { 264 if ((p->cs_flags & RADEON_CS_USE_VM) && 265 !p->rdev->vm_manager.enabled) { 266 DRM_ERROR("VM not active on asic!\n"); 267 return -EINVAL; 268 } 269 270 if (radeon_cs_get_ring(p, ring, priority)) 271 return -EINVAL; 272 273 /* we only support VM on some SI+ rings */ 274 if ((p->rdev->asic->ring[p->ring]->cs_parse == NULL) && 275 ((p->cs_flags & RADEON_CS_USE_VM) == 0)) { 276 DRM_ERROR("Ring %d requires VM!\n", p->ring); 277 return -EINVAL; 278 } 279 } 280 281 /* deal with non-vm */ 282 if ((p->chunk_ib_idx != -1) && 283 ((p->cs_flags & RADEON_CS_USE_VM) == 0) && 284 (p->chunks[p->chunk_ib_idx].chunk_id == RADEON_CHUNK_ID_IB)) { 285 if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) { 286 DRM_ERROR("cs IB too big: %d\n", 287 p->chunks[p->chunk_ib_idx].length_dw); 288 return -EINVAL; 289 } 290 if (p->rdev && (p->rdev->flags & RADEON_IS_AGP)) { 291 p->chunks[p->chunk_ib_idx].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL); 292 p->chunks[p->chunk_ib_idx].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL); 293 if (p->chunks[p->chunk_ib_idx].kpage[0] == NULL || 294 p->chunks[p->chunk_ib_idx].kpage[1] == NULL) { 295 kfree(p->chunks[p->chunk_ib_idx].kpage[0]); 296 kfree(p->chunks[p->chunk_ib_idx].kpage[1]); 297 p->chunks[p->chunk_ib_idx].kpage[0] = NULL; 298 p->chunks[p->chunk_ib_idx].kpage[1] = NULL; 299 return -ENOMEM; 300 } 301 } 302 p->chunks[p->chunk_ib_idx].kpage_idx[0] = -1; 303 p->chunks[p->chunk_ib_idx].kpage_idx[1] = -1; 304 p->chunks[p->chunk_ib_idx].last_copied_page = -1; 305 p->chunks[p->chunk_ib_idx].last_page_index = 306 ((p->chunks[p->chunk_ib_idx].length_dw * 4) - 1) / PAGE_SIZE; 307 } 308 309 return 0; 310 } 311 312 /** 313 * cs_parser_fini() - clean parser states 314 * @parser: parser structure holding parsing context. 315 * @error: error number 316 * 317 * If error is set than unvalidate buffer, otherwise just free memory 318 * used by parsing context. 319 **/ 320 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff) 321 { 322 unsigned i; 323 324 if (!error) { 325 ttm_eu_fence_buffer_objects(&parser->ticket, 326 &parser->validated, 327 parser->ib.fence); 328 } else if (backoff) { 329 ttm_eu_backoff_reservation(&parser->ticket, 330 &parser->validated); 331 } 332 333 if (parser->relocs != NULL) { 334 for (i = 0; i < parser->nrelocs; i++) { 335 if (parser->relocs[i].gobj) 336 drm_gem_object_unreference_unlocked(parser->relocs[i].gobj); 337 } 338 } 339 kfree(parser->track); 340 kfree(parser->relocs); 341 kfree(parser->relocs_ptr); 342 for (i = 0; i < parser->nchunks; i++) { 343 kfree(parser->chunks[i].kdata); 344 if ((parser->rdev->flags & RADEON_IS_AGP)) { 345 kfree(parser->chunks[i].kpage[0]); 346 kfree(parser->chunks[i].kpage[1]); 347 } 348 } 349 kfree(parser->chunks); 350 kfree(parser->chunks_array); 351 radeon_ib_free(parser->rdev, &parser->ib); 352 radeon_ib_free(parser->rdev, &parser->const_ib); 353 } 354 355 static int radeon_cs_ib_chunk(struct radeon_device *rdev, 356 struct radeon_cs_parser *parser) 357 { 358 struct radeon_cs_chunk *ib_chunk; 359 int r; 360 361 if (parser->chunk_ib_idx == -1) 362 return 0; 363 364 if (parser->cs_flags & RADEON_CS_USE_VM) 365 return 0; 366 367 ib_chunk = &parser->chunks[parser->chunk_ib_idx]; 368 /* Copy the packet into the IB, the parser will read from the 369 * input memory (cached) and write to the IB (which can be 370 * uncached). 371 */ 372 r = radeon_ib_get(rdev, parser->ring, &parser->ib, 373 NULL, ib_chunk->length_dw * 4); 374 if (r) { 375 DRM_ERROR("Failed to get ib !\n"); 376 return r; 377 } 378 parser->ib.length_dw = ib_chunk->length_dw; 379 r = radeon_cs_parse(rdev, parser->ring, parser); 380 if (r || parser->parser_error) { 381 DRM_ERROR("Invalid command stream !\n"); 382 return r; 383 } 384 r = radeon_cs_finish_pages(parser); 385 if (r) { 386 DRM_ERROR("Invalid command stream !\n"); 387 return r; 388 } 389 390 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 391 radeon_uvd_note_usage(rdev); 392 393 radeon_cs_sync_rings(parser); 394 r = radeon_ib_schedule(rdev, &parser->ib, NULL); 395 if (r) { 396 DRM_ERROR("Failed to schedule IB !\n"); 397 } 398 return r; 399 } 400 401 static int radeon_bo_vm_update_pte(struct radeon_cs_parser *parser, 402 struct radeon_vm *vm) 403 { 404 struct radeon_device *rdev = parser->rdev; 405 struct radeon_bo_list *lobj; 406 struct radeon_bo *bo; 407 int r; 408 409 r = radeon_vm_bo_update_pte(rdev, vm, rdev->ring_tmp_bo.bo, &rdev->ring_tmp_bo.bo->tbo.mem); 410 if (r) { 411 return r; 412 } 413 list_for_each_entry(lobj, &parser->validated, tv.head) { 414 bo = lobj->bo; 415 r = radeon_vm_bo_update_pte(parser->rdev, vm, bo, &bo->tbo.mem); 416 if (r) { 417 return r; 418 } 419 } 420 return 0; 421 } 422 423 static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev, 424 struct radeon_cs_parser *parser) 425 { 426 struct radeon_cs_chunk *ib_chunk; 427 struct radeon_fpriv *fpriv = parser->filp->driver_priv; 428 struct radeon_vm *vm = &fpriv->vm; 429 int r; 430 431 if (parser->chunk_ib_idx == -1) 432 return 0; 433 if ((parser->cs_flags & RADEON_CS_USE_VM) == 0) 434 return 0; 435 436 if ((rdev->family >= CHIP_TAHITI) && 437 (parser->chunk_const_ib_idx != -1)) { 438 ib_chunk = &parser->chunks[parser->chunk_const_ib_idx]; 439 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 440 DRM_ERROR("cs IB CONST too big: %d\n", ib_chunk->length_dw); 441 return -EINVAL; 442 } 443 r = radeon_ib_get(rdev, parser->ring, &parser->const_ib, 444 vm, ib_chunk->length_dw * 4); 445 if (r) { 446 DRM_ERROR("Failed to get const ib !\n"); 447 return r; 448 } 449 parser->const_ib.is_const_ib = true; 450 parser->const_ib.length_dw = ib_chunk->length_dw; 451 /* Copy the packet into the IB */ 452 if (DRM_COPY_FROM_USER(parser->const_ib.ptr, ib_chunk->user_ptr, 453 ib_chunk->length_dw * 4)) { 454 return -EFAULT; 455 } 456 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->const_ib); 457 if (r) { 458 return r; 459 } 460 } 461 462 ib_chunk = &parser->chunks[parser->chunk_ib_idx]; 463 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) { 464 DRM_ERROR("cs IB too big: %d\n", ib_chunk->length_dw); 465 return -EINVAL; 466 } 467 r = radeon_ib_get(rdev, parser->ring, &parser->ib, 468 vm, ib_chunk->length_dw * 4); 469 if (r) { 470 DRM_ERROR("Failed to get ib !\n"); 471 return r; 472 } 473 parser->ib.length_dw = ib_chunk->length_dw; 474 /* Copy the packet into the IB */ 475 if (DRM_COPY_FROM_USER(parser->ib.ptr, ib_chunk->user_ptr, 476 ib_chunk->length_dw * 4)) { 477 return -EFAULT; 478 } 479 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->ib); 480 if (r) { 481 return r; 482 } 483 484 if (parser->ring == R600_RING_TYPE_UVD_INDEX) 485 radeon_uvd_note_usage(rdev); 486 487 mutex_lock(&rdev->vm_manager.lock); 488 mutex_lock(&vm->mutex); 489 r = radeon_vm_alloc_pt(rdev, vm); 490 if (r) { 491 goto out; 492 } 493 r = radeon_bo_vm_update_pte(parser, vm); 494 if (r) { 495 goto out; 496 } 497 radeon_cs_sync_rings(parser); 498 radeon_ib_sync_to(&parser->ib, vm->fence); 499 radeon_ib_sync_to(&parser->ib, radeon_vm_grab_id( 500 rdev, vm, parser->ring)); 501 502 if ((rdev->family >= CHIP_TAHITI) && 503 (parser->chunk_const_ib_idx != -1)) { 504 r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib); 505 } else { 506 r = radeon_ib_schedule(rdev, &parser->ib, NULL); 507 } 508 509 if (!r) { 510 radeon_vm_fence(rdev, vm, parser->ib.fence); 511 } 512 513 out: 514 radeon_vm_add_to_lru(rdev, vm); 515 mutex_unlock(&vm->mutex); 516 mutex_unlock(&rdev->vm_manager.lock); 517 return r; 518 } 519 520 static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r) 521 { 522 if (r == -EDEADLK) { 523 r = radeon_gpu_reset(rdev); 524 if (!r) 525 r = -EAGAIN; 526 } 527 return r; 528 } 529 530 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 531 { 532 struct radeon_device *rdev = dev->dev_private; 533 struct radeon_cs_parser parser; 534 int r; 535 536 down_read(&rdev->exclusive_lock); 537 if (!rdev->accel_working) { 538 up_read(&rdev->exclusive_lock); 539 return -EBUSY; 540 } 541 /* initialize parser */ 542 memset(&parser, 0, sizeof(struct radeon_cs_parser)); 543 parser.filp = filp; 544 parser.rdev = rdev; 545 parser.dev = rdev->dev; 546 parser.family = rdev->family; 547 r = radeon_cs_parser_init(&parser, data); 548 if (r) { 549 DRM_ERROR("Failed to initialize parser !\n"); 550 radeon_cs_parser_fini(&parser, r, false); 551 up_read(&rdev->exclusive_lock); 552 r = radeon_cs_handle_lockup(rdev, r); 553 return r; 554 } 555 r = radeon_cs_parser_relocs(&parser); 556 if (r) { 557 if (r != -ERESTARTSYS) 558 DRM_ERROR("Failed to parse relocation %d!\n", r); 559 radeon_cs_parser_fini(&parser, r, false); 560 up_read(&rdev->exclusive_lock); 561 r = radeon_cs_handle_lockup(rdev, r); 562 return r; 563 } 564 565 trace_radeon_cs(&parser); 566 567 r = radeon_cs_ib_chunk(rdev, &parser); 568 if (r) { 569 goto out; 570 } 571 r = radeon_cs_ib_vm_chunk(rdev, &parser); 572 if (r) { 573 goto out; 574 } 575 out: 576 radeon_cs_parser_fini(&parser, r, true); 577 up_read(&rdev->exclusive_lock); 578 r = radeon_cs_handle_lockup(rdev, r); 579 return r; 580 } 581 582 int radeon_cs_finish_pages(struct radeon_cs_parser *p) 583 { 584 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; 585 int i; 586 int size = PAGE_SIZE; 587 588 for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) { 589 if (i == ibc->last_page_index) { 590 size = (ibc->length_dw * 4) % PAGE_SIZE; 591 if (size == 0) 592 size = PAGE_SIZE; 593 } 594 595 if (DRM_COPY_FROM_USER(p->ib.ptr + (i * (PAGE_SIZE/4)), 596 ibc->user_ptr + (i * PAGE_SIZE), 597 size)) 598 return -EFAULT; 599 } 600 return 0; 601 } 602 603 static int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx) 604 { 605 int new_page; 606 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; 607 int i; 608 int size = PAGE_SIZE; 609 bool copy1 = (p->rdev && (p->rdev->flags & RADEON_IS_AGP)) ? 610 false : true; 611 612 for (i = ibc->last_copied_page + 1; i < pg_idx; i++) { 613 if (DRM_COPY_FROM_USER(p->ib.ptr + (i * (PAGE_SIZE/4)), 614 ibc->user_ptr + (i * PAGE_SIZE), 615 PAGE_SIZE)) { 616 p->parser_error = -EFAULT; 617 return 0; 618 } 619 } 620 621 if (pg_idx == ibc->last_page_index) { 622 size = (ibc->length_dw * 4) % PAGE_SIZE; 623 if (size == 0) 624 size = PAGE_SIZE; 625 } 626 627 new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1; 628 if (copy1) 629 ibc->kpage[new_page] = p->ib.ptr + (pg_idx * (PAGE_SIZE / 4)); 630 631 if (DRM_COPY_FROM_USER(ibc->kpage[new_page], 632 ibc->user_ptr + (pg_idx * PAGE_SIZE), 633 size)) { 634 p->parser_error = -EFAULT; 635 return 0; 636 } 637 638 /* copy to IB for non single case */ 639 if (!copy1) 640 memcpy((void *)(p->ib.ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size); 641 642 ibc->last_copied_page = pg_idx; 643 ibc->kpage_idx[new_page] = pg_idx; 644 645 return new_page; 646 } 647 648 u32 radeon_get_ib_value(struct radeon_cs_parser *p, int idx) 649 { 650 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx]; 651 u32 pg_idx, pg_offset; 652 u32 idx_value = 0; 653 int new_page; 654 655 pg_idx = (idx * 4) / PAGE_SIZE; 656 pg_offset = (idx * 4) % PAGE_SIZE; 657 658 if (ibc->kpage_idx[0] == pg_idx) 659 return ibc->kpage[0][pg_offset/4]; 660 if (ibc->kpage_idx[1] == pg_idx) 661 return ibc->kpage[1][pg_offset/4]; 662 663 new_page = radeon_cs_update_pages(p, pg_idx); 664 if (new_page < 0) { 665 p->parser_error = new_page; 666 return 0; 667 } 668 669 idx_value = ibc->kpage[new_page][pg_offset/4]; 670 return idx_value; 671 } 672 673 /** 674 * radeon_cs_packet_parse() - parse cp packet and point ib index to next packet 675 * @parser: parser structure holding parsing context. 676 * @pkt: where to store packet information 677 * 678 * Assume that chunk_ib_index is properly set. Will return -EINVAL 679 * if packet is bigger than remaining ib size. or if packets is unknown. 680 **/ 681 int radeon_cs_packet_parse(struct radeon_cs_parser *p, 682 struct radeon_cs_packet *pkt, 683 unsigned idx) 684 { 685 struct radeon_cs_chunk *ib_chunk = &p->chunks[p->chunk_ib_idx]; 686 struct radeon_device *rdev = p->rdev; 687 uint32_t header; 688 689 if (idx >= ib_chunk->length_dw) { 690 DRM_ERROR("Can not parse packet at %d after CS end %d !\n", 691 idx, ib_chunk->length_dw); 692 return -EINVAL; 693 } 694 header = radeon_get_ib_value(p, idx); 695 pkt->idx = idx; 696 pkt->type = RADEON_CP_PACKET_GET_TYPE(header); 697 pkt->count = RADEON_CP_PACKET_GET_COUNT(header); 698 pkt->one_reg_wr = 0; 699 switch (pkt->type) { 700 case RADEON_PACKET_TYPE0: 701 if (rdev->family < CHIP_R600) { 702 pkt->reg = R100_CP_PACKET0_GET_REG(header); 703 pkt->one_reg_wr = 704 RADEON_CP_PACKET0_GET_ONE_REG_WR(header); 705 } else 706 pkt->reg = R600_CP_PACKET0_GET_REG(header); 707 break; 708 case RADEON_PACKET_TYPE3: 709 pkt->opcode = RADEON_CP_PACKET3_GET_OPCODE(header); 710 break; 711 case RADEON_PACKET_TYPE2: 712 pkt->count = -1; 713 break; 714 default: 715 DRM_ERROR("Unknown packet type %d at %d !\n", pkt->type, idx); 716 return -EINVAL; 717 } 718 if ((pkt->count + 1 + pkt->idx) >= ib_chunk->length_dw) { 719 DRM_ERROR("Packet (%d:%d:%d) end after CS buffer (%d) !\n", 720 pkt->idx, pkt->type, pkt->count, ib_chunk->length_dw); 721 return -EINVAL; 722 } 723 return 0; 724 } 725 726 /** 727 * radeon_cs_packet_next_is_pkt3_nop() - test if the next packet is P3 NOP 728 * @p: structure holding the parser context. 729 * 730 * Check if the next packet is NOP relocation packet3. 731 **/ 732 bool radeon_cs_packet_next_is_pkt3_nop(struct radeon_cs_parser *p) 733 { 734 struct radeon_cs_packet p3reloc; 735 int r; 736 737 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 738 if (r) 739 return false; 740 if (p3reloc.type != RADEON_PACKET_TYPE3) 741 return false; 742 if (p3reloc.opcode != RADEON_PACKET3_NOP) 743 return false; 744 return true; 745 } 746 747 /** 748 * radeon_cs_dump_packet() - dump raw packet context 749 * @p: structure holding the parser context. 750 * @pkt: structure holding the packet. 751 * 752 * Used mostly for debugging and error reporting. 753 **/ 754 void radeon_cs_dump_packet(struct radeon_cs_parser *p, 755 struct radeon_cs_packet *pkt) 756 { 757 volatile uint32_t *ib; 758 unsigned i; 759 unsigned idx; 760 761 ib = p->ib.ptr; 762 idx = pkt->idx; 763 for (i = 0; i <= (pkt->count + 1); i++, idx++) 764 DRM_INFO("ib[%d]=0x%08X\n", idx, ib[idx]); 765 } 766 767 /** 768 * radeon_cs_packet_next_reloc() - parse next (should be reloc) packet 769 * @parser: parser structure holding parsing context. 770 * @data: pointer to relocation data 771 * @offset_start: starting offset 772 * @offset_mask: offset mask (to align start offset on) 773 * @reloc: reloc informations 774 * 775 * Check if next packet is relocation packet3, do bo validation and compute 776 * GPU offset using the provided start. 777 **/ 778 int radeon_cs_packet_next_reloc(struct radeon_cs_parser *p, 779 struct radeon_cs_reloc **cs_reloc, 780 int nomm) 781 { 782 struct radeon_cs_chunk *relocs_chunk; 783 struct radeon_cs_packet p3reloc; 784 unsigned idx; 785 int r; 786 787 if (p->chunk_relocs_idx == -1) { 788 DRM_ERROR("No relocation chunk !\n"); 789 return -EINVAL; 790 } 791 *cs_reloc = NULL; 792 relocs_chunk = &p->chunks[p->chunk_relocs_idx]; 793 r = radeon_cs_packet_parse(p, &p3reloc, p->idx); 794 if (r) 795 return r; 796 p->idx += p3reloc.count + 2; 797 if (p3reloc.type != RADEON_PACKET_TYPE3 || 798 p3reloc.opcode != RADEON_PACKET3_NOP) { 799 DRM_ERROR("No packet3 for relocation for packet at %d.\n", 800 p3reloc.idx); 801 radeon_cs_dump_packet(p, &p3reloc); 802 return -EINVAL; 803 } 804 idx = radeon_get_ib_value(p, p3reloc.idx + 1); 805 if (idx >= relocs_chunk->length_dw) { 806 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n", 807 idx, relocs_chunk->length_dw); 808 radeon_cs_dump_packet(p, &p3reloc); 809 return -EINVAL; 810 } 811 /* FIXME: we assume reloc size is 4 dwords */ 812 if (nomm) { 813 *cs_reloc = p->relocs; 814 (*cs_reloc)->lobj.gpu_offset = 815 (u64)relocs_chunk->kdata[idx + 3] << 32; 816 (*cs_reloc)->lobj.gpu_offset |= relocs_chunk->kdata[idx + 0]; 817 } else 818 *cs_reloc = p->relocs_ptr[(idx / 4)]; 819 return 0; 820 } 821