1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2013 Red Hat 4 * Author: Rob Clark <robdclark@gmail.com> 5 */ 6 7 #include <linux/file.h> 8 #include <linux/sync_file.h> 9 #include <linux/uaccess.h> 10 11 #include <drm/drm_drv.h> 12 #include <drm/drm_file.h> 13 #include <drm/drm_syncobj.h> 14 15 #include "msm_drv.h" 16 #include "msm_gpu.h" 17 #include "msm_gem.h" 18 #include "msm_gpu_trace.h" 19 20 /* 21 * Cmdstream submission: 22 */ 23 24 /* make sure these don't conflict w/ MSM_SUBMIT_BO_x */ 25 #define BO_VALID 0x8000 /* is current addr in cmdstream correct/valid? */ 26 #define BO_LOCKED 0x4000 27 #define BO_PINNED 0x2000 28 29 static struct msm_gem_submit *submit_create(struct drm_device *dev, 30 struct msm_gpu *gpu, 31 struct msm_gpu_submitqueue *queue, uint32_t nr_bos, 32 uint32_t nr_cmds) 33 { 34 struct msm_gem_submit *submit; 35 uint64_t sz = struct_size(submit, bos, nr_bos) + 36 ((u64)nr_cmds * sizeof(submit->cmd[0])); 37 38 if (sz > SIZE_MAX) 39 return NULL; 40 41 submit = kmalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); 42 if (!submit) 43 return NULL; 44 45 kref_init(&submit->ref); 46 submit->dev = dev; 47 submit->aspace = queue->ctx->aspace; 48 submit->gpu = gpu; 49 submit->fence = NULL; 50 submit->cmd = (void *)&submit->bos[nr_bos]; 51 submit->queue = queue; 52 submit->ring = gpu->rb[queue->prio]; 53 54 /* initially, until copy_from_user() and bo lookup succeeds: */ 55 submit->nr_bos = 0; 56 submit->nr_cmds = 0; 57 58 INIT_LIST_HEAD(&submit->node); 59 INIT_LIST_HEAD(&submit->bo_list); 60 61 return submit; 62 } 63 64 void __msm_gem_submit_destroy(struct kref *kref) 65 { 66 struct msm_gem_submit *submit = 67 container_of(kref, struct msm_gem_submit, ref); 68 unsigned i; 69 70 dma_fence_put(submit->fence); 71 put_pid(submit->pid); 72 msm_submitqueue_put(submit->queue); 73 74 for (i = 0; i < submit->nr_cmds; i++) 75 kfree(submit->cmd[i].relocs); 76 77 kfree(submit); 78 } 79 80 static int submit_lookup_objects(struct msm_gem_submit *submit, 81 struct drm_msm_gem_submit *args, struct drm_file *file) 82 { 83 unsigned i; 84 int ret = 0; 85 86 for (i = 0; i < args->nr_bos; i++) { 87 struct drm_msm_gem_submit_bo submit_bo; 88 void __user *userptr = 89 u64_to_user_ptr(args->bos + (i * sizeof(submit_bo))); 90 91 /* make sure we don't have garbage flags, in case we hit 92 * error path before flags is initialized: 93 */ 94 submit->bos[i].flags = 0; 95 96 if (copy_from_user(&submit_bo, userptr, sizeof(submit_bo))) { 97 ret = -EFAULT; 98 i = 0; 99 goto out; 100 } 101 102 /* at least one of READ and/or WRITE flags should be set: */ 103 #define MANDATORY_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE) 104 105 if ((submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) || 106 !(submit_bo.flags & MANDATORY_FLAGS)) { 107 DRM_ERROR("invalid flags: %x\n", submit_bo.flags); 108 ret = -EINVAL; 109 i = 0; 110 goto out; 111 } 112 113 submit->bos[i].handle = submit_bo.handle; 114 submit->bos[i].flags = submit_bo.flags; 115 /* in validate_objects() we figure out if this is true: */ 116 submit->bos[i].iova = submit_bo.presumed; 117 } 118 119 spin_lock(&file->table_lock); 120 121 for (i = 0; i < args->nr_bos; i++) { 122 struct drm_gem_object *obj; 123 struct msm_gem_object *msm_obj; 124 125 /* normally use drm_gem_object_lookup(), but for bulk lookup 126 * all under single table_lock just hit object_idr directly: 127 */ 128 obj = idr_find(&file->object_idr, submit->bos[i].handle); 129 if (!obj) { 130 DRM_ERROR("invalid handle %u at index %u\n", submit->bos[i].handle, i); 131 ret = -EINVAL; 132 goto out_unlock; 133 } 134 135 msm_obj = to_msm_bo(obj); 136 137 if (!list_empty(&msm_obj->submit_entry)) { 138 DRM_ERROR("handle %u at index %u already on submit list\n", 139 submit->bos[i].handle, i); 140 ret = -EINVAL; 141 goto out_unlock; 142 } 143 144 drm_gem_object_get(obj); 145 146 submit->bos[i].obj = msm_obj; 147 148 list_add_tail(&msm_obj->submit_entry, &submit->bo_list); 149 } 150 151 out_unlock: 152 spin_unlock(&file->table_lock); 153 154 out: 155 submit->nr_bos = i; 156 157 return ret; 158 } 159 160 static int submit_lookup_cmds(struct msm_gem_submit *submit, 161 struct drm_msm_gem_submit *args, struct drm_file *file) 162 { 163 unsigned i, sz; 164 int ret = 0; 165 166 for (i = 0; i < args->nr_cmds; i++) { 167 struct drm_msm_gem_submit_cmd submit_cmd; 168 void __user *userptr = 169 u64_to_user_ptr(args->cmds + (i * sizeof(submit_cmd))); 170 171 ret = copy_from_user(&submit_cmd, userptr, sizeof(submit_cmd)); 172 if (ret) { 173 ret = -EFAULT; 174 goto out; 175 } 176 177 /* validate input from userspace: */ 178 switch (submit_cmd.type) { 179 case MSM_SUBMIT_CMD_BUF: 180 case MSM_SUBMIT_CMD_IB_TARGET_BUF: 181 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF: 182 break; 183 default: 184 DRM_ERROR("invalid type: %08x\n", submit_cmd.type); 185 return -EINVAL; 186 } 187 188 if (submit_cmd.size % 4) { 189 DRM_ERROR("non-aligned cmdstream buffer size: %u\n", 190 submit_cmd.size); 191 ret = -EINVAL; 192 goto out; 193 } 194 195 submit->cmd[i].type = submit_cmd.type; 196 submit->cmd[i].size = submit_cmd.size / 4; 197 submit->cmd[i].offset = submit_cmd.submit_offset / 4; 198 submit->cmd[i].idx = submit_cmd.submit_idx; 199 submit->cmd[i].nr_relocs = submit_cmd.nr_relocs; 200 201 sz = array_size(submit_cmd.nr_relocs, 202 sizeof(struct drm_msm_gem_submit_reloc)); 203 /* check for overflow: */ 204 if (sz == SIZE_MAX) { 205 ret = -ENOMEM; 206 goto out; 207 } 208 submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL); 209 ret = copy_from_user(submit->cmd[i].relocs, userptr, sz); 210 if (ret) { 211 ret = -EFAULT; 212 goto out; 213 } 214 } 215 216 out: 217 return ret; 218 } 219 220 static void submit_unlock_unpin_bo(struct msm_gem_submit *submit, 221 int i, bool backoff) 222 { 223 struct msm_gem_object *msm_obj = submit->bos[i].obj; 224 225 if (submit->bos[i].flags & BO_PINNED) 226 msm_gem_unpin_iova_locked(&msm_obj->base, submit->aspace); 227 228 if (submit->bos[i].flags & BO_LOCKED) 229 dma_resv_unlock(msm_obj->base.resv); 230 231 if (backoff && !(submit->bos[i].flags & BO_VALID)) 232 submit->bos[i].iova = 0; 233 234 submit->bos[i].flags &= ~(BO_LOCKED | BO_PINNED); 235 } 236 237 /* This is where we make sure all the bo's are reserved and pin'd: */ 238 static int submit_lock_objects(struct msm_gem_submit *submit) 239 { 240 int contended, slow_locked = -1, i, ret = 0; 241 242 retry: 243 for (i = 0; i < submit->nr_bos; i++) { 244 struct msm_gem_object *msm_obj = submit->bos[i].obj; 245 246 if (slow_locked == i) 247 slow_locked = -1; 248 249 contended = i; 250 251 if (!(submit->bos[i].flags & BO_LOCKED)) { 252 ret = dma_resv_lock_interruptible(msm_obj->base.resv, 253 &submit->ticket); 254 if (ret) 255 goto fail; 256 submit->bos[i].flags |= BO_LOCKED; 257 } 258 } 259 260 ww_acquire_done(&submit->ticket); 261 262 return 0; 263 264 fail: 265 for (; i >= 0; i--) 266 submit_unlock_unpin_bo(submit, i, true); 267 268 if (slow_locked > 0) 269 submit_unlock_unpin_bo(submit, slow_locked, true); 270 271 if (ret == -EDEADLK) { 272 struct msm_gem_object *msm_obj = submit->bos[contended].obj; 273 /* we lost out in a seqno race, lock and retry.. */ 274 ret = dma_resv_lock_slow_interruptible(msm_obj->base.resv, 275 &submit->ticket); 276 if (!ret) { 277 submit->bos[contended].flags |= BO_LOCKED; 278 slow_locked = contended; 279 goto retry; 280 } 281 } 282 283 return ret; 284 } 285 286 static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) 287 { 288 int i, ret = 0; 289 290 for (i = 0; i < submit->nr_bos; i++) { 291 struct msm_gem_object *msm_obj = submit->bos[i].obj; 292 bool write = submit->bos[i].flags & MSM_SUBMIT_BO_WRITE; 293 294 if (!write) { 295 /* NOTE: _reserve_shared() must happen before 296 * _add_shared_fence(), which makes this a slightly 297 * strange place to call it. OTOH this is a 298 * convenient can-fail point to hook it in. 299 */ 300 ret = dma_resv_reserve_shared(msm_obj->base.resv, 301 1); 302 if (ret) 303 return ret; 304 } 305 306 if (no_implicit) 307 continue; 308 309 ret = msm_gem_sync_object(&msm_obj->base, submit->ring->fctx, 310 write); 311 if (ret) 312 break; 313 } 314 315 return ret; 316 } 317 318 static int submit_pin_objects(struct msm_gem_submit *submit) 319 { 320 int i, ret = 0; 321 322 submit->valid = true; 323 324 for (i = 0; i < submit->nr_bos; i++) { 325 struct msm_gem_object *msm_obj = submit->bos[i].obj; 326 uint64_t iova; 327 328 /* if locking succeeded, pin bo: */ 329 ret = msm_gem_get_and_pin_iova_locked(&msm_obj->base, 330 submit->aspace, &iova); 331 332 if (ret) 333 break; 334 335 submit->bos[i].flags |= BO_PINNED; 336 337 if (iova == submit->bos[i].iova) { 338 submit->bos[i].flags |= BO_VALID; 339 } else { 340 submit->bos[i].iova = iova; 341 /* iova changed, so address in cmdstream is not valid: */ 342 submit->bos[i].flags &= ~BO_VALID; 343 submit->valid = false; 344 } 345 } 346 347 return ret; 348 } 349 350 static int submit_bo(struct msm_gem_submit *submit, uint32_t idx, 351 struct msm_gem_object **obj, uint64_t *iova, bool *valid) 352 { 353 if (idx >= submit->nr_bos) { 354 DRM_ERROR("invalid buffer index: %u (out of %u)\n", 355 idx, submit->nr_bos); 356 return -EINVAL; 357 } 358 359 if (obj) 360 *obj = submit->bos[idx].obj; 361 if (iova) 362 *iova = submit->bos[idx].iova; 363 if (valid) 364 *valid = !!(submit->bos[idx].flags & BO_VALID); 365 366 return 0; 367 } 368 369 /* process the reloc's and patch up the cmdstream as needed: */ 370 static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *obj, 371 uint32_t offset, uint32_t nr_relocs, struct drm_msm_gem_submit_reloc *relocs) 372 { 373 uint32_t i, last_offset = 0; 374 uint32_t *ptr; 375 int ret = 0; 376 377 if (!nr_relocs) 378 return 0; 379 380 if (offset % 4) { 381 DRM_ERROR("non-aligned cmdstream buffer: %u\n", offset); 382 return -EINVAL; 383 } 384 385 /* For now, just map the entire thing. Eventually we probably 386 * to do it page-by-page, w/ kmap() if not vmap()d.. 387 */ 388 ptr = msm_gem_get_vaddr_locked(&obj->base); 389 390 if (IS_ERR(ptr)) { 391 ret = PTR_ERR(ptr); 392 DBG("failed to map: %d", ret); 393 return ret; 394 } 395 396 for (i = 0; i < nr_relocs; i++) { 397 struct drm_msm_gem_submit_reloc submit_reloc = relocs[i]; 398 uint32_t off; 399 uint64_t iova; 400 bool valid; 401 402 if (submit_reloc.submit_offset % 4) { 403 DRM_ERROR("non-aligned reloc offset: %u\n", 404 submit_reloc.submit_offset); 405 ret = -EINVAL; 406 goto out; 407 } 408 409 /* offset in dwords: */ 410 off = submit_reloc.submit_offset / 4; 411 412 if ((off >= (obj->base.size / 4)) || 413 (off < last_offset)) { 414 DRM_ERROR("invalid offset %u at reloc %u\n", off, i); 415 ret = -EINVAL; 416 goto out; 417 } 418 419 ret = submit_bo(submit, submit_reloc.reloc_idx, NULL, &iova, &valid); 420 if (ret) 421 goto out; 422 423 if (valid) 424 continue; 425 426 iova += submit_reloc.reloc_offset; 427 428 if (submit_reloc.shift < 0) 429 iova >>= -submit_reloc.shift; 430 else 431 iova <<= submit_reloc.shift; 432 433 ptr[off] = iova | submit_reloc.or; 434 435 last_offset = off; 436 } 437 438 out: 439 msm_gem_put_vaddr_locked(&obj->base); 440 441 return ret; 442 } 443 444 static void submit_cleanup(struct msm_gem_submit *submit) 445 { 446 unsigned i; 447 448 for (i = 0; i < submit->nr_bos; i++) { 449 struct msm_gem_object *msm_obj = submit->bos[i].obj; 450 submit_unlock_unpin_bo(submit, i, false); 451 list_del_init(&msm_obj->submit_entry); 452 drm_gem_object_put_locked(&msm_obj->base); 453 } 454 } 455 456 457 struct msm_submit_post_dep { 458 struct drm_syncobj *syncobj; 459 uint64_t point; 460 struct dma_fence_chain *chain; 461 }; 462 463 static struct drm_syncobj **msm_wait_deps(struct drm_device *dev, 464 struct drm_file *file, 465 uint64_t in_syncobjs_addr, 466 uint32_t nr_in_syncobjs, 467 size_t syncobj_stride, 468 struct msm_ringbuffer *ring) 469 { 470 struct drm_syncobj **syncobjs = NULL; 471 struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; 472 int ret = 0; 473 uint32_t i, j; 474 475 syncobjs = kcalloc(nr_in_syncobjs, sizeof(*syncobjs), 476 GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); 477 if (!syncobjs) 478 return ERR_PTR(-ENOMEM); 479 480 for (i = 0; i < nr_in_syncobjs; ++i) { 481 uint64_t address = in_syncobjs_addr + i * syncobj_stride; 482 struct dma_fence *fence; 483 484 if (copy_from_user(&syncobj_desc, 485 u64_to_user_ptr(address), 486 min(syncobj_stride, sizeof(syncobj_desc)))) { 487 ret = -EFAULT; 488 break; 489 } 490 491 if (syncobj_desc.point && 492 !drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) { 493 ret = -EOPNOTSUPP; 494 break; 495 } 496 497 if (syncobj_desc.flags & ~MSM_SUBMIT_SYNCOBJ_FLAGS) { 498 ret = -EINVAL; 499 break; 500 } 501 502 ret = drm_syncobj_find_fence(file, syncobj_desc.handle, 503 syncobj_desc.point, 0, &fence); 504 if (ret) 505 break; 506 507 if (!dma_fence_match_context(fence, ring->fctx->context)) 508 ret = dma_fence_wait(fence, true); 509 510 dma_fence_put(fence); 511 if (ret) 512 break; 513 514 if (syncobj_desc.flags & MSM_SUBMIT_SYNCOBJ_RESET) { 515 syncobjs[i] = 516 drm_syncobj_find(file, syncobj_desc.handle); 517 if (!syncobjs[i]) { 518 ret = -EINVAL; 519 break; 520 } 521 } 522 } 523 524 if (ret) { 525 for (j = 0; j <= i; ++j) { 526 if (syncobjs[j]) 527 drm_syncobj_put(syncobjs[j]); 528 } 529 kfree(syncobjs); 530 return ERR_PTR(ret); 531 } 532 return syncobjs; 533 } 534 535 static void msm_reset_syncobjs(struct drm_syncobj **syncobjs, 536 uint32_t nr_syncobjs) 537 { 538 uint32_t i; 539 540 for (i = 0; syncobjs && i < nr_syncobjs; ++i) { 541 if (syncobjs[i]) 542 drm_syncobj_replace_fence(syncobjs[i], NULL); 543 } 544 } 545 546 static struct msm_submit_post_dep *msm_parse_post_deps(struct drm_device *dev, 547 struct drm_file *file, 548 uint64_t syncobjs_addr, 549 uint32_t nr_syncobjs, 550 size_t syncobj_stride) 551 { 552 struct msm_submit_post_dep *post_deps; 553 struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; 554 int ret = 0; 555 uint32_t i, j; 556 557 post_deps = kmalloc_array(nr_syncobjs, sizeof(*post_deps), 558 GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); 559 if (!post_deps) 560 return ERR_PTR(-ENOMEM); 561 562 for (i = 0; i < nr_syncobjs; ++i) { 563 uint64_t address = syncobjs_addr + i * syncobj_stride; 564 565 if (copy_from_user(&syncobj_desc, 566 u64_to_user_ptr(address), 567 min(syncobj_stride, sizeof(syncobj_desc)))) { 568 ret = -EFAULT; 569 break; 570 } 571 572 post_deps[i].point = syncobj_desc.point; 573 post_deps[i].chain = NULL; 574 575 if (syncobj_desc.flags) { 576 ret = -EINVAL; 577 break; 578 } 579 580 if (syncobj_desc.point) { 581 if (!drm_core_check_feature(dev, 582 DRIVER_SYNCOBJ_TIMELINE)) { 583 ret = -EOPNOTSUPP; 584 break; 585 } 586 587 post_deps[i].chain = 588 kmalloc(sizeof(*post_deps[i].chain), 589 GFP_KERNEL); 590 if (!post_deps[i].chain) { 591 ret = -ENOMEM; 592 break; 593 } 594 } 595 596 post_deps[i].syncobj = 597 drm_syncobj_find(file, syncobj_desc.handle); 598 if (!post_deps[i].syncobj) { 599 ret = -EINVAL; 600 break; 601 } 602 } 603 604 if (ret) { 605 for (j = 0; j <= i; ++j) { 606 kfree(post_deps[j].chain); 607 if (post_deps[j].syncobj) 608 drm_syncobj_put(post_deps[j].syncobj); 609 } 610 611 kfree(post_deps); 612 return ERR_PTR(ret); 613 } 614 615 return post_deps; 616 } 617 618 static void msm_process_post_deps(struct msm_submit_post_dep *post_deps, 619 uint32_t count, struct dma_fence *fence) 620 { 621 uint32_t i; 622 623 for (i = 0; post_deps && i < count; ++i) { 624 if (post_deps[i].chain) { 625 drm_syncobj_add_point(post_deps[i].syncobj, 626 post_deps[i].chain, 627 fence, post_deps[i].point); 628 post_deps[i].chain = NULL; 629 } else { 630 drm_syncobj_replace_fence(post_deps[i].syncobj, 631 fence); 632 } 633 } 634 } 635 636 int msm_ioctl_gem_submit(struct drm_device *dev, void *data, 637 struct drm_file *file) 638 { 639 static atomic_t ident = ATOMIC_INIT(0); 640 struct msm_drm_private *priv = dev->dev_private; 641 struct drm_msm_gem_submit *args = data; 642 struct msm_file_private *ctx = file->driver_priv; 643 struct msm_gem_submit *submit; 644 struct msm_gpu *gpu = priv->gpu; 645 struct sync_file *sync_file = NULL; 646 struct msm_gpu_submitqueue *queue; 647 struct msm_ringbuffer *ring; 648 struct msm_submit_post_dep *post_deps = NULL; 649 struct drm_syncobj **syncobjs_to_reset = NULL; 650 int out_fence_fd = -1; 651 struct pid *pid = get_pid(task_pid(current)); 652 bool has_ww_ticket = false; 653 unsigned i; 654 int ret, submitid; 655 if (!gpu) 656 return -ENXIO; 657 658 if (args->pad) 659 return -EINVAL; 660 661 /* for now, we just have 3d pipe.. eventually this would need to 662 * be more clever to dispatch to appropriate gpu module: 663 */ 664 if (MSM_PIPE_ID(args->flags) != MSM_PIPE_3D0) 665 return -EINVAL; 666 667 if (MSM_PIPE_FLAGS(args->flags) & ~MSM_SUBMIT_FLAGS) 668 return -EINVAL; 669 670 if (args->flags & MSM_SUBMIT_SUDO) { 671 if (!IS_ENABLED(CONFIG_DRM_MSM_GPU_SUDO) || 672 !capable(CAP_SYS_RAWIO)) 673 return -EINVAL; 674 } 675 676 queue = msm_submitqueue_get(ctx, args->queueid); 677 if (!queue) 678 return -ENOENT; 679 680 /* Get a unique identifier for the submission for logging purposes */ 681 submitid = atomic_inc_return(&ident) - 1; 682 683 ring = gpu->rb[queue->prio]; 684 trace_msm_gpu_submit(pid_nr(pid), ring->id, submitid, 685 args->nr_bos, args->nr_cmds); 686 687 if (args->flags & MSM_SUBMIT_FENCE_FD_IN) { 688 struct dma_fence *in_fence; 689 690 in_fence = sync_file_get_fence(args->fence_fd); 691 692 if (!in_fence) 693 return -EINVAL; 694 695 /* 696 * Wait if the fence is from a foreign context, or if the fence 697 * array contains any fence from a foreign context. 698 */ 699 ret = 0; 700 if (!dma_fence_match_context(in_fence, ring->fctx->context)) 701 ret = dma_fence_wait(in_fence, true); 702 703 dma_fence_put(in_fence); 704 if (ret) 705 return ret; 706 } 707 708 if (args->flags & MSM_SUBMIT_SYNCOBJ_IN) { 709 syncobjs_to_reset = msm_wait_deps(dev, file, 710 args->in_syncobjs, 711 args->nr_in_syncobjs, 712 args->syncobj_stride, ring); 713 if (IS_ERR(syncobjs_to_reset)) 714 return PTR_ERR(syncobjs_to_reset); 715 } 716 717 if (args->flags & MSM_SUBMIT_SYNCOBJ_OUT) { 718 post_deps = msm_parse_post_deps(dev, file, 719 args->out_syncobjs, 720 args->nr_out_syncobjs, 721 args->syncobj_stride); 722 if (IS_ERR(post_deps)) { 723 ret = PTR_ERR(post_deps); 724 goto out_post_unlock; 725 } 726 } 727 728 ret = mutex_lock_interruptible(&dev->struct_mutex); 729 if (ret) 730 goto out_post_unlock; 731 732 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 733 out_fence_fd = get_unused_fd_flags(O_CLOEXEC); 734 if (out_fence_fd < 0) { 735 ret = out_fence_fd; 736 goto out_unlock; 737 } 738 } 739 740 submit = submit_create(dev, gpu, queue, args->nr_bos, 741 args->nr_cmds); 742 if (!submit) { 743 ret = -ENOMEM; 744 goto out_unlock; 745 } 746 747 submit->pid = pid; 748 submit->ident = submitid; 749 750 if (args->flags & MSM_SUBMIT_SUDO) 751 submit->in_rb = true; 752 753 ret = submit_lookup_objects(submit, args, file); 754 if (ret) 755 goto out_pre_pm; 756 757 ret = submit_lookup_cmds(submit, args, file); 758 if (ret) 759 goto out_pre_pm; 760 761 /* 762 * Thanks to dev_pm_opp opp_table_lock interactions with mm->mmap_sem 763 * in the resume path, we need to to rpm get before we lock objs. 764 * Which unfortunately might involve powering up the GPU sooner than 765 * is necessary. But at least in the explicit fencing case, we will 766 * have already done all the fence waiting. 767 */ 768 pm_runtime_get_sync(&gpu->pdev->dev); 769 770 /* copy_*_user while holding a ww ticket upsets lockdep */ 771 ww_acquire_init(&submit->ticket, &reservation_ww_class); 772 has_ww_ticket = true; 773 ret = submit_lock_objects(submit); 774 if (ret) 775 goto out; 776 777 ret = submit_fence_sync(submit, !!(args->flags & MSM_SUBMIT_NO_IMPLICIT)); 778 if (ret) 779 goto out; 780 781 ret = submit_pin_objects(submit); 782 if (ret) 783 goto out; 784 785 for (i = 0; i < args->nr_cmds; i++) { 786 struct msm_gem_object *msm_obj; 787 uint64_t iova; 788 789 ret = submit_bo(submit, submit->cmd[i].idx, 790 &msm_obj, &iova, NULL); 791 if (ret) 792 goto out; 793 794 if (!submit->cmd[i].size || 795 ((submit->cmd[i].size + submit->cmd[i].offset) > 796 msm_obj->base.size / 4)) { 797 DRM_ERROR("invalid cmdstream size: %u\n", submit->cmd[i].size * 4); 798 ret = -EINVAL; 799 goto out; 800 } 801 802 submit->cmd[i].iova = iova + (submit->cmd[i].offset * 4); 803 804 if (submit->valid) 805 continue; 806 807 ret = submit_reloc(submit, msm_obj, submit->cmd[i].offset * 4, 808 submit->cmd[i].nr_relocs, submit->cmd[i].relocs); 809 if (ret) 810 goto out; 811 } 812 813 submit->nr_cmds = i; 814 815 submit->fence = msm_fence_alloc(ring->fctx); 816 if (IS_ERR(submit->fence)) { 817 ret = PTR_ERR(submit->fence); 818 submit->fence = NULL; 819 goto out; 820 } 821 822 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 823 sync_file = sync_file_create(submit->fence); 824 if (!sync_file) { 825 ret = -ENOMEM; 826 goto out; 827 } 828 } 829 830 msm_gpu_submit(gpu, submit); 831 832 args->fence = submit->fence->seqno; 833 834 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 835 fd_install(out_fence_fd, sync_file->file); 836 args->fence_fd = out_fence_fd; 837 } 838 839 msm_reset_syncobjs(syncobjs_to_reset, args->nr_in_syncobjs); 840 msm_process_post_deps(post_deps, args->nr_out_syncobjs, 841 submit->fence); 842 843 844 out: 845 pm_runtime_put(&gpu->pdev->dev); 846 out_pre_pm: 847 submit_cleanup(submit); 848 if (has_ww_ticket) 849 ww_acquire_fini(&submit->ticket); 850 msm_gem_submit_put(submit); 851 out_unlock: 852 if (ret && (out_fence_fd >= 0)) 853 put_unused_fd(out_fence_fd); 854 mutex_unlock(&dev->struct_mutex); 855 856 out_post_unlock: 857 if (!IS_ERR_OR_NULL(post_deps)) { 858 for (i = 0; i < args->nr_out_syncobjs; ++i) { 859 kfree(post_deps[i].chain); 860 drm_syncobj_put(post_deps[i].syncobj); 861 } 862 kfree(post_deps); 863 } 864 865 if (!IS_ERR_OR_NULL(syncobjs_to_reset)) { 866 for (i = 0; i < args->nr_in_syncobjs; ++i) { 867 if (syncobjs_to_reset[i]) 868 drm_syncobj_put(syncobjs_to_reset[i]); 869 } 870 kfree(syncobjs_to_reset); 871 } 872 873 return ret; 874 } 875