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 submit->fault_dumped = false; 54 55 /* initially, until copy_from_user() and bo lookup succeeds: */ 56 submit->nr_bos = 0; 57 submit->nr_cmds = 0; 58 59 INIT_LIST_HEAD(&submit->node); 60 INIT_LIST_HEAD(&submit->bo_list); 61 62 return submit; 63 } 64 65 void __msm_gem_submit_destroy(struct kref *kref) 66 { 67 struct msm_gem_submit *submit = 68 container_of(kref, struct msm_gem_submit, ref); 69 unsigned i; 70 71 dma_fence_put(submit->fence); 72 put_pid(submit->pid); 73 msm_submitqueue_put(submit->queue); 74 75 for (i = 0; i < submit->nr_cmds; i++) 76 kfree(submit->cmd[i].relocs); 77 78 kfree(submit); 79 } 80 81 static int submit_lookup_objects(struct msm_gem_submit *submit, 82 struct drm_msm_gem_submit *args, struct drm_file *file) 83 { 84 unsigned i; 85 int ret = 0; 86 87 for (i = 0; i < args->nr_bos; i++) { 88 struct drm_msm_gem_submit_bo submit_bo; 89 void __user *userptr = 90 u64_to_user_ptr(args->bos + (i * sizeof(submit_bo))); 91 92 /* make sure we don't have garbage flags, in case we hit 93 * error path before flags is initialized: 94 */ 95 submit->bos[i].flags = 0; 96 97 if (copy_from_user(&submit_bo, userptr, sizeof(submit_bo))) { 98 ret = -EFAULT; 99 i = 0; 100 goto out; 101 } 102 103 /* at least one of READ and/or WRITE flags should be set: */ 104 #define MANDATORY_FLAGS (MSM_SUBMIT_BO_READ | MSM_SUBMIT_BO_WRITE) 105 106 if ((submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) || 107 !(submit_bo.flags & MANDATORY_FLAGS)) { 108 DRM_ERROR("invalid flags: %x\n", submit_bo.flags); 109 ret = -EINVAL; 110 i = 0; 111 goto out; 112 } 113 114 submit->bos[i].handle = submit_bo.handle; 115 submit->bos[i].flags = submit_bo.flags; 116 /* in validate_objects() we figure out if this is true: */ 117 submit->bos[i].iova = submit_bo.presumed; 118 } 119 120 spin_lock(&file->table_lock); 121 122 for (i = 0; i < args->nr_bos; i++) { 123 struct drm_gem_object *obj; 124 struct msm_gem_object *msm_obj; 125 126 /* normally use drm_gem_object_lookup(), but for bulk lookup 127 * all under single table_lock just hit object_idr directly: 128 */ 129 obj = idr_find(&file->object_idr, submit->bos[i].handle); 130 if (!obj) { 131 DRM_ERROR("invalid handle %u at index %u\n", submit->bos[i].handle, i); 132 ret = -EINVAL; 133 goto out_unlock; 134 } 135 136 msm_obj = to_msm_bo(obj); 137 138 if (!list_empty(&msm_obj->submit_entry)) { 139 DRM_ERROR("handle %u at index %u already on submit list\n", 140 submit->bos[i].handle, i); 141 ret = -EINVAL; 142 goto out_unlock; 143 } 144 145 drm_gem_object_get(obj); 146 147 submit->bos[i].obj = msm_obj; 148 149 list_add_tail(&msm_obj->submit_entry, &submit->bo_list); 150 } 151 152 out_unlock: 153 spin_unlock(&file->table_lock); 154 155 out: 156 submit->nr_bos = i; 157 158 return ret; 159 } 160 161 static int submit_lookup_cmds(struct msm_gem_submit *submit, 162 struct drm_msm_gem_submit *args, struct drm_file *file) 163 { 164 unsigned i, sz; 165 int ret = 0; 166 167 for (i = 0; i < args->nr_cmds; i++) { 168 struct drm_msm_gem_submit_cmd submit_cmd; 169 void __user *userptr = 170 u64_to_user_ptr(args->cmds + (i * sizeof(submit_cmd))); 171 172 ret = copy_from_user(&submit_cmd, userptr, sizeof(submit_cmd)); 173 if (ret) { 174 ret = -EFAULT; 175 goto out; 176 } 177 178 /* validate input from userspace: */ 179 switch (submit_cmd.type) { 180 case MSM_SUBMIT_CMD_BUF: 181 case MSM_SUBMIT_CMD_IB_TARGET_BUF: 182 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF: 183 break; 184 default: 185 DRM_ERROR("invalid type: %08x\n", submit_cmd.type); 186 return -EINVAL; 187 } 188 189 if (submit_cmd.size % 4) { 190 DRM_ERROR("non-aligned cmdstream buffer size: %u\n", 191 submit_cmd.size); 192 ret = -EINVAL; 193 goto out; 194 } 195 196 submit->cmd[i].type = submit_cmd.type; 197 submit->cmd[i].size = submit_cmd.size / 4; 198 submit->cmd[i].offset = submit_cmd.submit_offset / 4; 199 submit->cmd[i].idx = submit_cmd.submit_idx; 200 submit->cmd[i].nr_relocs = submit_cmd.nr_relocs; 201 202 userptr = u64_to_user_ptr(submit_cmd.relocs); 203 204 sz = array_size(submit_cmd.nr_relocs, 205 sizeof(struct drm_msm_gem_submit_reloc)); 206 /* check for overflow: */ 207 if (sz == SIZE_MAX) { 208 ret = -ENOMEM; 209 goto out; 210 } 211 submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL); 212 ret = copy_from_user(submit->cmd[i].relocs, userptr, sz); 213 if (ret) { 214 ret = -EFAULT; 215 goto out; 216 } 217 } 218 219 out: 220 return ret; 221 } 222 223 static void submit_unlock_unpin_bo(struct msm_gem_submit *submit, 224 int i, bool backoff) 225 { 226 struct msm_gem_object *msm_obj = submit->bos[i].obj; 227 228 if (submit->bos[i].flags & BO_PINNED) 229 msm_gem_unpin_iova_locked(&msm_obj->base, submit->aspace); 230 231 if (submit->bos[i].flags & BO_LOCKED) 232 dma_resv_unlock(msm_obj->base.resv); 233 234 if (backoff && !(submit->bos[i].flags & BO_VALID)) 235 submit->bos[i].iova = 0; 236 237 submit->bos[i].flags &= ~(BO_LOCKED | BO_PINNED); 238 } 239 240 /* This is where we make sure all the bo's are reserved and pin'd: */ 241 static int submit_lock_objects(struct msm_gem_submit *submit) 242 { 243 int contended, slow_locked = -1, i, ret = 0; 244 245 retry: 246 for (i = 0; i < submit->nr_bos; i++) { 247 struct msm_gem_object *msm_obj = submit->bos[i].obj; 248 249 if (slow_locked == i) 250 slow_locked = -1; 251 252 contended = i; 253 254 if (!(submit->bos[i].flags & BO_LOCKED)) { 255 ret = dma_resv_lock_interruptible(msm_obj->base.resv, 256 &submit->ticket); 257 if (ret) 258 goto fail; 259 submit->bos[i].flags |= BO_LOCKED; 260 } 261 } 262 263 ww_acquire_done(&submit->ticket); 264 265 return 0; 266 267 fail: 268 for (; i >= 0; i--) 269 submit_unlock_unpin_bo(submit, i, true); 270 271 if (slow_locked > 0) 272 submit_unlock_unpin_bo(submit, slow_locked, true); 273 274 if (ret == -EDEADLK) { 275 struct msm_gem_object *msm_obj = submit->bos[contended].obj; 276 /* we lost out in a seqno race, lock and retry.. */ 277 ret = dma_resv_lock_slow_interruptible(msm_obj->base.resv, 278 &submit->ticket); 279 if (!ret) { 280 submit->bos[contended].flags |= BO_LOCKED; 281 slow_locked = contended; 282 goto retry; 283 } 284 } 285 286 return ret; 287 } 288 289 static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit) 290 { 291 int i, ret = 0; 292 293 for (i = 0; i < submit->nr_bos; i++) { 294 struct msm_gem_object *msm_obj = submit->bos[i].obj; 295 bool write = submit->bos[i].flags & MSM_SUBMIT_BO_WRITE; 296 297 if (!write) { 298 /* NOTE: _reserve_shared() must happen before 299 * _add_shared_fence(), which makes this a slightly 300 * strange place to call it. OTOH this is a 301 * convenient can-fail point to hook it in. 302 */ 303 ret = dma_resv_reserve_shared(msm_obj->base.resv, 304 1); 305 if (ret) 306 return ret; 307 } 308 309 if (no_implicit) 310 continue; 311 312 ret = msm_gem_sync_object(&msm_obj->base, submit->ring->fctx, 313 write); 314 if (ret) 315 break; 316 } 317 318 return ret; 319 } 320 321 static int submit_pin_objects(struct msm_gem_submit *submit) 322 { 323 int i, ret = 0; 324 325 submit->valid = true; 326 327 for (i = 0; i < submit->nr_bos; i++) { 328 struct msm_gem_object *msm_obj = submit->bos[i].obj; 329 uint64_t iova; 330 331 /* if locking succeeded, pin bo: */ 332 ret = msm_gem_get_and_pin_iova_locked(&msm_obj->base, 333 submit->aspace, &iova); 334 335 if (ret) 336 break; 337 338 submit->bos[i].flags |= BO_PINNED; 339 340 if (iova == submit->bos[i].iova) { 341 submit->bos[i].flags |= BO_VALID; 342 } else { 343 submit->bos[i].iova = iova; 344 /* iova changed, so address in cmdstream is not valid: */ 345 submit->bos[i].flags &= ~BO_VALID; 346 submit->valid = false; 347 } 348 } 349 350 return ret; 351 } 352 353 static int submit_bo(struct msm_gem_submit *submit, uint32_t idx, 354 struct msm_gem_object **obj, uint64_t *iova, bool *valid) 355 { 356 if (idx >= submit->nr_bos) { 357 DRM_ERROR("invalid buffer index: %u (out of %u)\n", 358 idx, submit->nr_bos); 359 return -EINVAL; 360 } 361 362 if (obj) 363 *obj = submit->bos[idx].obj; 364 if (iova) 365 *iova = submit->bos[idx].iova; 366 if (valid) 367 *valid = !!(submit->bos[idx].flags & BO_VALID); 368 369 return 0; 370 } 371 372 /* process the reloc's and patch up the cmdstream as needed: */ 373 static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *obj, 374 uint32_t offset, uint32_t nr_relocs, struct drm_msm_gem_submit_reloc *relocs) 375 { 376 uint32_t i, last_offset = 0; 377 uint32_t *ptr; 378 int ret = 0; 379 380 if (!nr_relocs) 381 return 0; 382 383 if (offset % 4) { 384 DRM_ERROR("non-aligned cmdstream buffer: %u\n", offset); 385 return -EINVAL; 386 } 387 388 /* For now, just map the entire thing. Eventually we probably 389 * to do it page-by-page, w/ kmap() if not vmap()d.. 390 */ 391 ptr = msm_gem_get_vaddr_locked(&obj->base); 392 393 if (IS_ERR(ptr)) { 394 ret = PTR_ERR(ptr); 395 DBG("failed to map: %d", ret); 396 return ret; 397 } 398 399 for (i = 0; i < nr_relocs; i++) { 400 struct drm_msm_gem_submit_reloc submit_reloc = relocs[i]; 401 uint32_t off; 402 uint64_t iova; 403 bool valid; 404 405 if (submit_reloc.submit_offset % 4) { 406 DRM_ERROR("non-aligned reloc offset: %u\n", 407 submit_reloc.submit_offset); 408 ret = -EINVAL; 409 goto out; 410 } 411 412 /* offset in dwords: */ 413 off = submit_reloc.submit_offset / 4; 414 415 if ((off >= (obj->base.size / 4)) || 416 (off < last_offset)) { 417 DRM_ERROR("invalid offset %u at reloc %u\n", off, i); 418 ret = -EINVAL; 419 goto out; 420 } 421 422 ret = submit_bo(submit, submit_reloc.reloc_idx, NULL, &iova, &valid); 423 if (ret) 424 goto out; 425 426 if (valid) 427 continue; 428 429 iova += submit_reloc.reloc_offset; 430 431 if (submit_reloc.shift < 0) 432 iova >>= -submit_reloc.shift; 433 else 434 iova <<= submit_reloc.shift; 435 436 ptr[off] = iova | submit_reloc.or; 437 438 last_offset = off; 439 } 440 441 out: 442 msm_gem_put_vaddr_locked(&obj->base); 443 444 return ret; 445 } 446 447 static void submit_cleanup(struct msm_gem_submit *submit) 448 { 449 unsigned i; 450 451 for (i = 0; i < submit->nr_bos; i++) { 452 struct msm_gem_object *msm_obj = submit->bos[i].obj; 453 submit_unlock_unpin_bo(submit, i, false); 454 list_del_init(&msm_obj->submit_entry); 455 drm_gem_object_put_locked(&msm_obj->base); 456 } 457 } 458 459 460 struct msm_submit_post_dep { 461 struct drm_syncobj *syncobj; 462 uint64_t point; 463 struct dma_fence_chain *chain; 464 }; 465 466 static struct drm_syncobj **msm_wait_deps(struct drm_device *dev, 467 struct drm_file *file, 468 uint64_t in_syncobjs_addr, 469 uint32_t nr_in_syncobjs, 470 size_t syncobj_stride, 471 struct msm_ringbuffer *ring) 472 { 473 struct drm_syncobj **syncobjs = NULL; 474 struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; 475 int ret = 0; 476 uint32_t i, j; 477 478 syncobjs = kcalloc(nr_in_syncobjs, sizeof(*syncobjs), 479 GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); 480 if (!syncobjs) 481 return ERR_PTR(-ENOMEM); 482 483 for (i = 0; i < nr_in_syncobjs; ++i) { 484 uint64_t address = in_syncobjs_addr + i * syncobj_stride; 485 struct dma_fence *fence; 486 487 if (copy_from_user(&syncobj_desc, 488 u64_to_user_ptr(address), 489 min(syncobj_stride, sizeof(syncobj_desc)))) { 490 ret = -EFAULT; 491 break; 492 } 493 494 if (syncobj_desc.point && 495 !drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) { 496 ret = -EOPNOTSUPP; 497 break; 498 } 499 500 if (syncobj_desc.flags & ~MSM_SUBMIT_SYNCOBJ_FLAGS) { 501 ret = -EINVAL; 502 break; 503 } 504 505 ret = drm_syncobj_find_fence(file, syncobj_desc.handle, 506 syncobj_desc.point, 0, &fence); 507 if (ret) 508 break; 509 510 if (!dma_fence_match_context(fence, ring->fctx->context)) 511 ret = dma_fence_wait(fence, true); 512 513 dma_fence_put(fence); 514 if (ret) 515 break; 516 517 if (syncobj_desc.flags & MSM_SUBMIT_SYNCOBJ_RESET) { 518 syncobjs[i] = 519 drm_syncobj_find(file, syncobj_desc.handle); 520 if (!syncobjs[i]) { 521 ret = -EINVAL; 522 break; 523 } 524 } 525 } 526 527 if (ret) { 528 for (j = 0; j <= i; ++j) { 529 if (syncobjs[j]) 530 drm_syncobj_put(syncobjs[j]); 531 } 532 kfree(syncobjs); 533 return ERR_PTR(ret); 534 } 535 return syncobjs; 536 } 537 538 static void msm_reset_syncobjs(struct drm_syncobj **syncobjs, 539 uint32_t nr_syncobjs) 540 { 541 uint32_t i; 542 543 for (i = 0; syncobjs && i < nr_syncobjs; ++i) { 544 if (syncobjs[i]) 545 drm_syncobj_replace_fence(syncobjs[i], NULL); 546 } 547 } 548 549 static struct msm_submit_post_dep *msm_parse_post_deps(struct drm_device *dev, 550 struct drm_file *file, 551 uint64_t syncobjs_addr, 552 uint32_t nr_syncobjs, 553 size_t syncobj_stride) 554 { 555 struct msm_submit_post_dep *post_deps; 556 struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; 557 int ret = 0; 558 uint32_t i, j; 559 560 post_deps = kmalloc_array(nr_syncobjs, sizeof(*post_deps), 561 GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); 562 if (!post_deps) 563 return ERR_PTR(-ENOMEM); 564 565 for (i = 0; i < nr_syncobjs; ++i) { 566 uint64_t address = syncobjs_addr + i * syncobj_stride; 567 568 if (copy_from_user(&syncobj_desc, 569 u64_to_user_ptr(address), 570 min(syncobj_stride, sizeof(syncobj_desc)))) { 571 ret = -EFAULT; 572 break; 573 } 574 575 post_deps[i].point = syncobj_desc.point; 576 post_deps[i].chain = NULL; 577 578 if (syncobj_desc.flags) { 579 ret = -EINVAL; 580 break; 581 } 582 583 if (syncobj_desc.point) { 584 if (!drm_core_check_feature(dev, 585 DRIVER_SYNCOBJ_TIMELINE)) { 586 ret = -EOPNOTSUPP; 587 break; 588 } 589 590 post_deps[i].chain = 591 kmalloc(sizeof(*post_deps[i].chain), 592 GFP_KERNEL); 593 if (!post_deps[i].chain) { 594 ret = -ENOMEM; 595 break; 596 } 597 } 598 599 post_deps[i].syncobj = 600 drm_syncobj_find(file, syncobj_desc.handle); 601 if (!post_deps[i].syncobj) { 602 ret = -EINVAL; 603 break; 604 } 605 } 606 607 if (ret) { 608 for (j = 0; j <= i; ++j) { 609 kfree(post_deps[j].chain); 610 if (post_deps[j].syncobj) 611 drm_syncobj_put(post_deps[j].syncobj); 612 } 613 614 kfree(post_deps); 615 return ERR_PTR(ret); 616 } 617 618 return post_deps; 619 } 620 621 static void msm_process_post_deps(struct msm_submit_post_dep *post_deps, 622 uint32_t count, struct dma_fence *fence) 623 { 624 uint32_t i; 625 626 for (i = 0; post_deps && i < count; ++i) { 627 if (post_deps[i].chain) { 628 drm_syncobj_add_point(post_deps[i].syncobj, 629 post_deps[i].chain, 630 fence, post_deps[i].point); 631 post_deps[i].chain = NULL; 632 } else { 633 drm_syncobj_replace_fence(post_deps[i].syncobj, 634 fence); 635 } 636 } 637 } 638 639 int msm_ioctl_gem_submit(struct drm_device *dev, void *data, 640 struct drm_file *file) 641 { 642 static atomic_t ident = ATOMIC_INIT(0); 643 struct msm_drm_private *priv = dev->dev_private; 644 struct drm_msm_gem_submit *args = data; 645 struct msm_file_private *ctx = file->driver_priv; 646 struct msm_gem_submit *submit; 647 struct msm_gpu *gpu = priv->gpu; 648 struct sync_file *sync_file = NULL; 649 struct msm_gpu_submitqueue *queue; 650 struct msm_ringbuffer *ring; 651 struct msm_submit_post_dep *post_deps = NULL; 652 struct drm_syncobj **syncobjs_to_reset = NULL; 653 int out_fence_fd = -1; 654 struct pid *pid = get_pid(task_pid(current)); 655 bool has_ww_ticket = false; 656 unsigned i; 657 int ret, submitid; 658 if (!gpu) 659 return -ENXIO; 660 661 if (args->pad) 662 return -EINVAL; 663 664 /* for now, we just have 3d pipe.. eventually this would need to 665 * be more clever to dispatch to appropriate gpu module: 666 */ 667 if (MSM_PIPE_ID(args->flags) != MSM_PIPE_3D0) 668 return -EINVAL; 669 670 if (MSM_PIPE_FLAGS(args->flags) & ~MSM_SUBMIT_FLAGS) 671 return -EINVAL; 672 673 if (args->flags & MSM_SUBMIT_SUDO) { 674 if (!IS_ENABLED(CONFIG_DRM_MSM_GPU_SUDO) || 675 !capable(CAP_SYS_RAWIO)) 676 return -EINVAL; 677 } 678 679 queue = msm_submitqueue_get(ctx, args->queueid); 680 if (!queue) 681 return -ENOENT; 682 683 /* Get a unique identifier for the submission for logging purposes */ 684 submitid = atomic_inc_return(&ident) - 1; 685 686 ring = gpu->rb[queue->prio]; 687 trace_msm_gpu_submit(pid_nr(pid), ring->id, submitid, 688 args->nr_bos, args->nr_cmds); 689 690 if (args->flags & MSM_SUBMIT_FENCE_FD_IN) { 691 struct dma_fence *in_fence; 692 693 in_fence = sync_file_get_fence(args->fence_fd); 694 695 if (!in_fence) 696 return -EINVAL; 697 698 /* 699 * Wait if the fence is from a foreign context, or if the fence 700 * array contains any fence from a foreign context. 701 */ 702 ret = 0; 703 if (!dma_fence_match_context(in_fence, ring->fctx->context)) 704 ret = dma_fence_wait(in_fence, true); 705 706 dma_fence_put(in_fence); 707 if (ret) 708 return ret; 709 } 710 711 if (args->flags & MSM_SUBMIT_SYNCOBJ_IN) { 712 syncobjs_to_reset = msm_wait_deps(dev, file, 713 args->in_syncobjs, 714 args->nr_in_syncobjs, 715 args->syncobj_stride, ring); 716 if (IS_ERR(syncobjs_to_reset)) 717 return PTR_ERR(syncobjs_to_reset); 718 } 719 720 if (args->flags & MSM_SUBMIT_SYNCOBJ_OUT) { 721 post_deps = msm_parse_post_deps(dev, file, 722 args->out_syncobjs, 723 args->nr_out_syncobjs, 724 args->syncobj_stride); 725 if (IS_ERR(post_deps)) { 726 ret = PTR_ERR(post_deps); 727 goto out_post_unlock; 728 } 729 } 730 731 ret = mutex_lock_interruptible(&dev->struct_mutex); 732 if (ret) 733 goto out_post_unlock; 734 735 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 736 out_fence_fd = get_unused_fd_flags(O_CLOEXEC); 737 if (out_fence_fd < 0) { 738 ret = out_fence_fd; 739 goto out_unlock; 740 } 741 } 742 743 submit = submit_create(dev, gpu, queue, args->nr_bos, 744 args->nr_cmds); 745 if (!submit) { 746 ret = -ENOMEM; 747 goto out_unlock; 748 } 749 750 submit->pid = pid; 751 submit->ident = submitid; 752 753 if (args->flags & MSM_SUBMIT_SUDO) 754 submit->in_rb = true; 755 756 ret = submit_lookup_objects(submit, args, file); 757 if (ret) 758 goto out_pre_pm; 759 760 ret = submit_lookup_cmds(submit, args, file); 761 if (ret) 762 goto out_pre_pm; 763 764 /* 765 * Thanks to dev_pm_opp opp_table_lock interactions with mm->mmap_sem 766 * in the resume path, we need to to rpm get before we lock objs. 767 * Which unfortunately might involve powering up the GPU sooner than 768 * is necessary. But at least in the explicit fencing case, we will 769 * have already done all the fence waiting. 770 */ 771 pm_runtime_get_sync(&gpu->pdev->dev); 772 773 /* copy_*_user while holding a ww ticket upsets lockdep */ 774 ww_acquire_init(&submit->ticket, &reservation_ww_class); 775 has_ww_ticket = true; 776 ret = submit_lock_objects(submit); 777 if (ret) 778 goto out; 779 780 ret = submit_fence_sync(submit, !!(args->flags & MSM_SUBMIT_NO_IMPLICIT)); 781 if (ret) 782 goto out; 783 784 ret = submit_pin_objects(submit); 785 if (ret) 786 goto out; 787 788 for (i = 0; i < args->nr_cmds; i++) { 789 struct msm_gem_object *msm_obj; 790 uint64_t iova; 791 792 ret = submit_bo(submit, submit->cmd[i].idx, 793 &msm_obj, &iova, NULL); 794 if (ret) 795 goto out; 796 797 if (!submit->cmd[i].size || 798 ((submit->cmd[i].size + submit->cmd[i].offset) > 799 msm_obj->base.size / 4)) { 800 DRM_ERROR("invalid cmdstream size: %u\n", submit->cmd[i].size * 4); 801 ret = -EINVAL; 802 goto out; 803 } 804 805 submit->cmd[i].iova = iova + (submit->cmd[i].offset * 4); 806 807 if (submit->valid) 808 continue; 809 810 ret = submit_reloc(submit, msm_obj, submit->cmd[i].offset * 4, 811 submit->cmd[i].nr_relocs, submit->cmd[i].relocs); 812 if (ret) 813 goto out; 814 } 815 816 submit->nr_cmds = i; 817 818 submit->fence = msm_fence_alloc(ring->fctx); 819 if (IS_ERR(submit->fence)) { 820 ret = PTR_ERR(submit->fence); 821 submit->fence = NULL; 822 goto out; 823 } 824 825 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 826 sync_file = sync_file_create(submit->fence); 827 if (!sync_file) { 828 ret = -ENOMEM; 829 goto out; 830 } 831 } 832 833 msm_gpu_submit(gpu, submit); 834 835 args->fence = submit->fence->seqno; 836 837 if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { 838 fd_install(out_fence_fd, sync_file->file); 839 args->fence_fd = out_fence_fd; 840 } 841 842 msm_reset_syncobjs(syncobjs_to_reset, args->nr_in_syncobjs); 843 msm_process_post_deps(post_deps, args->nr_out_syncobjs, 844 submit->fence); 845 846 847 out: 848 pm_runtime_put(&gpu->pdev->dev); 849 out_pre_pm: 850 submit_cleanup(submit); 851 if (has_ww_ticket) 852 ww_acquire_fini(&submit->ticket); 853 msm_gem_submit_put(submit); 854 out_unlock: 855 if (ret && (out_fence_fd >= 0)) 856 put_unused_fd(out_fence_fd); 857 mutex_unlock(&dev->struct_mutex); 858 859 out_post_unlock: 860 if (!IS_ERR_OR_NULL(post_deps)) { 861 for (i = 0; i < args->nr_out_syncobjs; ++i) { 862 kfree(post_deps[i].chain); 863 drm_syncobj_put(post_deps[i].syncobj); 864 } 865 kfree(post_deps); 866 } 867 868 if (!IS_ERR_OR_NULL(syncobjs_to_reset)) { 869 for (i = 0; i < args->nr_in_syncobjs; ++i) { 870 if (syncobjs_to_reset[i]) 871 drm_syncobj_put(syncobjs_to_reset[i]); 872 } 873 kfree(syncobjs_to_reset); 874 } 875 876 return ret; 877 } 878