1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #include "xe_exec_queue.h" 7 8 #include <linux/nospec.h> 9 10 #include <drm/drm_device.h> 11 #include <drm/drm_file.h> 12 #include <drm/xe_drm.h> 13 14 #include "xe_device.h" 15 #include "xe_gt.h" 16 #include "xe_hw_engine_class_sysfs.h" 17 #include "xe_hw_fence.h" 18 #include "xe_lrc.h" 19 #include "xe_macros.h" 20 #include "xe_migrate.h" 21 #include "xe_pm.h" 22 #include "xe_ring_ops_types.h" 23 #include "xe_trace.h" 24 #include "xe_vm.h" 25 26 enum xe_exec_queue_sched_prop { 27 XE_EXEC_QUEUE_JOB_TIMEOUT = 0, 28 XE_EXEC_QUEUE_TIMESLICE = 1, 29 XE_EXEC_QUEUE_PREEMPT_TIMEOUT = 2, 30 XE_EXEC_QUEUE_SCHED_PROP_MAX = 3, 31 }; 32 33 static int exec_queue_user_extensions(struct xe_device *xe, struct xe_exec_queue *q, 34 u64 extensions, int ext_number); 35 36 static void __xe_exec_queue_free(struct xe_exec_queue *q) 37 { 38 if (q->vm) 39 xe_vm_put(q->vm); 40 kfree(q); 41 } 42 43 static struct xe_exec_queue *__xe_exec_queue_alloc(struct xe_device *xe, 44 struct xe_vm *vm, 45 u32 logical_mask, 46 u16 width, struct xe_hw_engine *hwe, 47 u32 flags, u64 extensions) 48 { 49 struct xe_exec_queue *q; 50 struct xe_gt *gt = hwe->gt; 51 int err; 52 53 /* only kernel queues can be permanent */ 54 XE_WARN_ON((flags & EXEC_QUEUE_FLAG_PERMANENT) && !(flags & EXEC_QUEUE_FLAG_KERNEL)); 55 56 q = kzalloc(struct_size(q, lrc, width), GFP_KERNEL); 57 if (!q) 58 return ERR_PTR(-ENOMEM); 59 60 kref_init(&q->refcount); 61 q->flags = flags; 62 q->hwe = hwe; 63 q->gt = gt; 64 q->class = hwe->class; 65 q->width = width; 66 q->logical_mask = logical_mask; 67 q->fence_irq = >->fence_irq[hwe->class]; 68 q->ring_ops = gt->ring_ops[hwe->class]; 69 q->ops = gt->exec_queue_ops; 70 INIT_LIST_HEAD(&q->compute.link); 71 INIT_LIST_HEAD(&q->multi_gt_link); 72 73 q->sched_props.timeslice_us = hwe->eclass->sched_props.timeslice_us; 74 q->sched_props.preempt_timeout_us = 75 hwe->eclass->sched_props.preempt_timeout_us; 76 q->sched_props.job_timeout_ms = 77 hwe->eclass->sched_props.job_timeout_ms; 78 if (q->flags & EXEC_QUEUE_FLAG_KERNEL && 79 q->flags & EXEC_QUEUE_FLAG_HIGH_PRIORITY) 80 q->sched_props.priority = XE_EXEC_QUEUE_PRIORITY_KERNEL; 81 else 82 q->sched_props.priority = XE_EXEC_QUEUE_PRIORITY_NORMAL; 83 84 if (vm) 85 q->vm = xe_vm_get(vm); 86 87 if (extensions) { 88 /* 89 * may set q->usm, must come before xe_lrc_init(), 90 * may overwrite q->sched_props, must come before q->ops->init() 91 */ 92 err = exec_queue_user_extensions(xe, q, extensions, 0); 93 if (err) { 94 __xe_exec_queue_free(q); 95 return ERR_PTR(err); 96 } 97 } 98 99 if (xe_exec_queue_is_parallel(q)) { 100 q->parallel.composite_fence_ctx = dma_fence_context_alloc(1); 101 q->parallel.composite_fence_seqno = XE_FENCE_INITIAL_SEQNO; 102 } 103 104 return q; 105 } 106 107 static int __xe_exec_queue_init(struct xe_exec_queue *q) 108 { 109 struct xe_device *xe = gt_to_xe(q->gt); 110 int i, err; 111 112 for (i = 0; i < q->width; ++i) { 113 err = xe_lrc_init(q->lrc + i, q->hwe, q, q->vm, SZ_16K); 114 if (err) 115 goto err_lrc; 116 } 117 118 err = q->ops->init(q); 119 if (err) 120 goto err_lrc; 121 122 /* 123 * Normally the user vm holds an rpm ref to keep the device 124 * awake, and the context holds a ref for the vm, however for 125 * some engines we use the kernels migrate vm underneath which offers no 126 * such rpm ref, or we lack a vm. Make sure we keep a ref here, so we 127 * can perform GuC CT actions when needed. Caller is expected to have 128 * already grabbed the rpm ref outside any sensitive locks. 129 */ 130 if (!(q->flags & EXEC_QUEUE_FLAG_PERMANENT) && (q->flags & EXEC_QUEUE_FLAG_VM || !q->vm)) 131 xe_pm_runtime_get_noresume(xe); 132 133 return 0; 134 135 err_lrc: 136 for (i = i - 1; i >= 0; --i) 137 xe_lrc_finish(q->lrc + i); 138 return err; 139 } 140 141 struct xe_exec_queue *xe_exec_queue_create(struct xe_device *xe, struct xe_vm *vm, 142 u32 logical_mask, u16 width, 143 struct xe_hw_engine *hwe, u32 flags, 144 u64 extensions) 145 { 146 struct xe_exec_queue *q; 147 int err; 148 149 q = __xe_exec_queue_alloc(xe, vm, logical_mask, width, hwe, flags, 150 extensions); 151 if (IS_ERR(q)) 152 return q; 153 154 if (vm) { 155 err = xe_vm_lock(vm, true); 156 if (err) 157 goto err_post_alloc; 158 } 159 160 err = __xe_exec_queue_init(q); 161 if (vm) 162 xe_vm_unlock(vm); 163 if (err) 164 goto err_post_alloc; 165 166 return q; 167 168 err_post_alloc: 169 __xe_exec_queue_free(q); 170 return ERR_PTR(err); 171 } 172 173 struct xe_exec_queue *xe_exec_queue_create_class(struct xe_device *xe, struct xe_gt *gt, 174 struct xe_vm *vm, 175 enum xe_engine_class class, u32 flags) 176 { 177 struct xe_hw_engine *hwe, *hwe0 = NULL; 178 enum xe_hw_engine_id id; 179 u32 logical_mask = 0; 180 181 for_each_hw_engine(hwe, gt, id) { 182 if (xe_hw_engine_is_reserved(hwe)) 183 continue; 184 185 if (hwe->class == class) { 186 logical_mask |= BIT(hwe->logical_instance); 187 if (!hwe0) 188 hwe0 = hwe; 189 } 190 } 191 192 if (!logical_mask) 193 return ERR_PTR(-ENODEV); 194 195 return xe_exec_queue_create(xe, vm, logical_mask, 1, hwe0, flags, 0); 196 } 197 198 void xe_exec_queue_destroy(struct kref *ref) 199 { 200 struct xe_exec_queue *q = container_of(ref, struct xe_exec_queue, refcount); 201 struct xe_exec_queue *eq, *next; 202 203 xe_exec_queue_last_fence_put_unlocked(q); 204 if (!(q->flags & EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD)) { 205 list_for_each_entry_safe(eq, next, &q->multi_gt_list, 206 multi_gt_link) 207 xe_exec_queue_put(eq); 208 } 209 210 q->ops->fini(q); 211 } 212 213 void xe_exec_queue_fini(struct xe_exec_queue *q) 214 { 215 int i; 216 217 for (i = 0; i < q->width; ++i) 218 xe_lrc_finish(q->lrc + i); 219 if (!(q->flags & EXEC_QUEUE_FLAG_PERMANENT) && (q->flags & EXEC_QUEUE_FLAG_VM || !q->vm)) 220 xe_pm_runtime_put(gt_to_xe(q->gt)); 221 __xe_exec_queue_free(q); 222 } 223 224 void xe_exec_queue_assign_name(struct xe_exec_queue *q, u32 instance) 225 { 226 switch (q->class) { 227 case XE_ENGINE_CLASS_RENDER: 228 snprintf(q->name, sizeof(q->name), "rcs%d", instance); 229 break; 230 case XE_ENGINE_CLASS_VIDEO_DECODE: 231 snprintf(q->name, sizeof(q->name), "vcs%d", instance); 232 break; 233 case XE_ENGINE_CLASS_VIDEO_ENHANCE: 234 snprintf(q->name, sizeof(q->name), "vecs%d", instance); 235 break; 236 case XE_ENGINE_CLASS_COPY: 237 snprintf(q->name, sizeof(q->name), "bcs%d", instance); 238 break; 239 case XE_ENGINE_CLASS_COMPUTE: 240 snprintf(q->name, sizeof(q->name), "ccs%d", instance); 241 break; 242 case XE_ENGINE_CLASS_OTHER: 243 snprintf(q->name, sizeof(q->name), "gsccs%d", instance); 244 break; 245 default: 246 XE_WARN_ON(q->class); 247 } 248 } 249 250 struct xe_exec_queue *xe_exec_queue_lookup(struct xe_file *xef, u32 id) 251 { 252 struct xe_exec_queue *q; 253 254 mutex_lock(&xef->exec_queue.lock); 255 q = xa_load(&xef->exec_queue.xa, id); 256 if (q) 257 xe_exec_queue_get(q); 258 mutex_unlock(&xef->exec_queue.lock); 259 260 return q; 261 } 262 263 enum xe_exec_queue_priority 264 xe_exec_queue_device_get_max_priority(struct xe_device *xe) 265 { 266 return capable(CAP_SYS_NICE) ? XE_EXEC_QUEUE_PRIORITY_HIGH : 267 XE_EXEC_QUEUE_PRIORITY_NORMAL; 268 } 269 270 static int exec_queue_set_priority(struct xe_device *xe, struct xe_exec_queue *q, 271 u64 value) 272 { 273 if (XE_IOCTL_DBG(xe, value > XE_EXEC_QUEUE_PRIORITY_HIGH)) 274 return -EINVAL; 275 276 if (XE_IOCTL_DBG(xe, value > xe_exec_queue_device_get_max_priority(xe))) 277 return -EPERM; 278 279 q->sched_props.priority = value; 280 return 0; 281 } 282 283 static bool xe_exec_queue_enforce_schedule_limit(void) 284 { 285 #if IS_ENABLED(CONFIG_DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT) 286 return true; 287 #else 288 return !capable(CAP_SYS_NICE); 289 #endif 290 } 291 292 static void 293 xe_exec_queue_get_prop_minmax(struct xe_hw_engine_class_intf *eclass, 294 enum xe_exec_queue_sched_prop prop, 295 u32 *min, u32 *max) 296 { 297 switch (prop) { 298 case XE_EXEC_QUEUE_JOB_TIMEOUT: 299 *min = eclass->sched_props.job_timeout_min; 300 *max = eclass->sched_props.job_timeout_max; 301 break; 302 case XE_EXEC_QUEUE_TIMESLICE: 303 *min = eclass->sched_props.timeslice_min; 304 *max = eclass->sched_props.timeslice_max; 305 break; 306 case XE_EXEC_QUEUE_PREEMPT_TIMEOUT: 307 *min = eclass->sched_props.preempt_timeout_min; 308 *max = eclass->sched_props.preempt_timeout_max; 309 break; 310 default: 311 break; 312 } 313 #if IS_ENABLED(CONFIG_DRM_XE_ENABLE_SCHEDTIMEOUT_LIMIT) 314 if (capable(CAP_SYS_NICE)) { 315 switch (prop) { 316 case XE_EXEC_QUEUE_JOB_TIMEOUT: 317 *min = XE_HW_ENGINE_JOB_TIMEOUT_MIN; 318 *max = XE_HW_ENGINE_JOB_TIMEOUT_MAX; 319 break; 320 case XE_EXEC_QUEUE_TIMESLICE: 321 *min = XE_HW_ENGINE_TIMESLICE_MIN; 322 *max = XE_HW_ENGINE_TIMESLICE_MAX; 323 break; 324 case XE_EXEC_QUEUE_PREEMPT_TIMEOUT: 325 *min = XE_HW_ENGINE_PREEMPT_TIMEOUT_MIN; 326 *max = XE_HW_ENGINE_PREEMPT_TIMEOUT_MAX; 327 break; 328 default: 329 break; 330 } 331 } 332 #endif 333 } 334 335 static int exec_queue_set_timeslice(struct xe_device *xe, struct xe_exec_queue *q, 336 u64 value) 337 { 338 u32 min = 0, max = 0; 339 340 xe_exec_queue_get_prop_minmax(q->hwe->eclass, 341 XE_EXEC_QUEUE_TIMESLICE, &min, &max); 342 343 if (xe_exec_queue_enforce_schedule_limit() && 344 !xe_hw_engine_timeout_in_range(value, min, max)) 345 return -EINVAL; 346 347 q->sched_props.timeslice_us = value; 348 return 0; 349 } 350 351 typedef int (*xe_exec_queue_set_property_fn)(struct xe_device *xe, 352 struct xe_exec_queue *q, 353 u64 value); 354 355 static const xe_exec_queue_set_property_fn exec_queue_set_property_funcs[] = { 356 [DRM_XE_EXEC_QUEUE_SET_PROPERTY_PRIORITY] = exec_queue_set_priority, 357 [DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE] = exec_queue_set_timeslice, 358 }; 359 360 static int exec_queue_user_ext_set_property(struct xe_device *xe, 361 struct xe_exec_queue *q, 362 u64 extension) 363 { 364 u64 __user *address = u64_to_user_ptr(extension); 365 struct drm_xe_ext_set_property ext; 366 int err; 367 u32 idx; 368 369 err = __copy_from_user(&ext, address, sizeof(ext)); 370 if (XE_IOCTL_DBG(xe, err)) 371 return -EFAULT; 372 373 if (XE_IOCTL_DBG(xe, ext.property >= 374 ARRAY_SIZE(exec_queue_set_property_funcs)) || 375 XE_IOCTL_DBG(xe, ext.pad) || 376 XE_IOCTL_DBG(xe, ext.property != DRM_XE_EXEC_QUEUE_SET_PROPERTY_PRIORITY && 377 ext.property != DRM_XE_EXEC_QUEUE_SET_PROPERTY_TIMESLICE)) 378 return -EINVAL; 379 380 idx = array_index_nospec(ext.property, ARRAY_SIZE(exec_queue_set_property_funcs)); 381 if (!exec_queue_set_property_funcs[idx]) 382 return -EINVAL; 383 384 return exec_queue_set_property_funcs[idx](xe, q, ext.value); 385 } 386 387 typedef int (*xe_exec_queue_user_extension_fn)(struct xe_device *xe, 388 struct xe_exec_queue *q, 389 u64 extension); 390 391 static const xe_exec_queue_user_extension_fn exec_queue_user_extension_funcs[] = { 392 [DRM_XE_EXEC_QUEUE_EXTENSION_SET_PROPERTY] = exec_queue_user_ext_set_property, 393 }; 394 395 #define MAX_USER_EXTENSIONS 16 396 static int exec_queue_user_extensions(struct xe_device *xe, struct xe_exec_queue *q, 397 u64 extensions, int ext_number) 398 { 399 u64 __user *address = u64_to_user_ptr(extensions); 400 struct drm_xe_user_extension ext; 401 int err; 402 u32 idx; 403 404 if (XE_IOCTL_DBG(xe, ext_number >= MAX_USER_EXTENSIONS)) 405 return -E2BIG; 406 407 err = __copy_from_user(&ext, address, sizeof(ext)); 408 if (XE_IOCTL_DBG(xe, err)) 409 return -EFAULT; 410 411 if (XE_IOCTL_DBG(xe, ext.pad) || 412 XE_IOCTL_DBG(xe, ext.name >= 413 ARRAY_SIZE(exec_queue_user_extension_funcs))) 414 return -EINVAL; 415 416 idx = array_index_nospec(ext.name, 417 ARRAY_SIZE(exec_queue_user_extension_funcs)); 418 err = exec_queue_user_extension_funcs[idx](xe, q, extensions); 419 if (XE_IOCTL_DBG(xe, err)) 420 return err; 421 422 if (ext.next_extension) 423 return exec_queue_user_extensions(xe, q, ext.next_extension, 424 ++ext_number); 425 426 return 0; 427 } 428 429 static const enum xe_engine_class user_to_xe_engine_class[] = { 430 [DRM_XE_ENGINE_CLASS_RENDER] = XE_ENGINE_CLASS_RENDER, 431 [DRM_XE_ENGINE_CLASS_COPY] = XE_ENGINE_CLASS_COPY, 432 [DRM_XE_ENGINE_CLASS_VIDEO_DECODE] = XE_ENGINE_CLASS_VIDEO_DECODE, 433 [DRM_XE_ENGINE_CLASS_VIDEO_ENHANCE] = XE_ENGINE_CLASS_VIDEO_ENHANCE, 434 [DRM_XE_ENGINE_CLASS_COMPUTE] = XE_ENGINE_CLASS_COMPUTE, 435 }; 436 437 static struct xe_hw_engine * 438 find_hw_engine(struct xe_device *xe, 439 struct drm_xe_engine_class_instance eci) 440 { 441 u32 idx; 442 443 if (eci.engine_class >= ARRAY_SIZE(user_to_xe_engine_class)) 444 return NULL; 445 446 if (eci.gt_id >= xe->info.gt_count) 447 return NULL; 448 449 idx = array_index_nospec(eci.engine_class, 450 ARRAY_SIZE(user_to_xe_engine_class)); 451 452 return xe_gt_hw_engine(xe_device_get_gt(xe, eci.gt_id), 453 user_to_xe_engine_class[idx], 454 eci.engine_instance, true); 455 } 456 457 static u32 bind_exec_queue_logical_mask(struct xe_device *xe, struct xe_gt *gt, 458 struct drm_xe_engine_class_instance *eci, 459 u16 width, u16 num_placements) 460 { 461 struct xe_hw_engine *hwe; 462 enum xe_hw_engine_id id; 463 u32 logical_mask = 0; 464 465 if (XE_IOCTL_DBG(xe, width != 1)) 466 return 0; 467 if (XE_IOCTL_DBG(xe, num_placements != 1)) 468 return 0; 469 if (XE_IOCTL_DBG(xe, eci[0].engine_instance != 0)) 470 return 0; 471 472 eci[0].engine_class = DRM_XE_ENGINE_CLASS_COPY; 473 474 for_each_hw_engine(hwe, gt, id) { 475 if (xe_hw_engine_is_reserved(hwe)) 476 continue; 477 478 if (hwe->class == 479 user_to_xe_engine_class[DRM_XE_ENGINE_CLASS_COPY]) 480 logical_mask |= BIT(hwe->logical_instance); 481 } 482 483 return logical_mask; 484 } 485 486 static u32 calc_validate_logical_mask(struct xe_device *xe, struct xe_gt *gt, 487 struct drm_xe_engine_class_instance *eci, 488 u16 width, u16 num_placements) 489 { 490 int len = width * num_placements; 491 int i, j, n; 492 u16 class; 493 u16 gt_id; 494 u32 return_mask = 0, prev_mask; 495 496 if (XE_IOCTL_DBG(xe, !xe_device_uc_enabled(xe) && 497 len > 1)) 498 return 0; 499 500 for (i = 0; i < width; ++i) { 501 u32 current_mask = 0; 502 503 for (j = 0; j < num_placements; ++j) { 504 struct xe_hw_engine *hwe; 505 506 n = j * width + i; 507 508 hwe = find_hw_engine(xe, eci[n]); 509 if (XE_IOCTL_DBG(xe, !hwe)) 510 return 0; 511 512 if (XE_IOCTL_DBG(xe, xe_hw_engine_is_reserved(hwe))) 513 return 0; 514 515 if (XE_IOCTL_DBG(xe, n && eci[n].gt_id != gt_id) || 516 XE_IOCTL_DBG(xe, n && eci[n].engine_class != class)) 517 return 0; 518 519 class = eci[n].engine_class; 520 gt_id = eci[n].gt_id; 521 522 if (width == 1 || !i) 523 return_mask |= BIT(eci[n].engine_instance); 524 current_mask |= BIT(eci[n].engine_instance); 525 } 526 527 /* Parallel submissions must be logically contiguous */ 528 if (i && XE_IOCTL_DBG(xe, current_mask != prev_mask << 1)) 529 return 0; 530 531 prev_mask = current_mask; 532 } 533 534 return return_mask; 535 } 536 537 int xe_exec_queue_create_ioctl(struct drm_device *dev, void *data, 538 struct drm_file *file) 539 { 540 struct xe_device *xe = to_xe_device(dev); 541 struct xe_file *xef = to_xe_file(file); 542 struct drm_xe_exec_queue_create *args = data; 543 struct drm_xe_engine_class_instance eci[XE_HW_ENGINE_MAX_INSTANCE]; 544 struct drm_xe_engine_class_instance __user *user_eci = 545 u64_to_user_ptr(args->instances); 546 struct xe_hw_engine *hwe; 547 struct xe_vm *vm, *migrate_vm; 548 struct xe_gt *gt; 549 struct xe_exec_queue *q = NULL; 550 u32 logical_mask; 551 u32 id; 552 u32 len; 553 int err; 554 555 if (XE_IOCTL_DBG(xe, args->flags) || 556 XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1])) 557 return -EINVAL; 558 559 len = args->width * args->num_placements; 560 if (XE_IOCTL_DBG(xe, !len || len > XE_HW_ENGINE_MAX_INSTANCE)) 561 return -EINVAL; 562 563 err = __copy_from_user(eci, user_eci, 564 sizeof(struct drm_xe_engine_class_instance) * 565 len); 566 if (XE_IOCTL_DBG(xe, err)) 567 return -EFAULT; 568 569 if (XE_IOCTL_DBG(xe, eci[0].gt_id >= xe->info.gt_count)) 570 return -EINVAL; 571 572 if (eci[0].engine_class == DRM_XE_ENGINE_CLASS_VM_BIND) { 573 for_each_gt(gt, xe, id) { 574 struct xe_exec_queue *new; 575 u32 flags; 576 577 if (xe_gt_is_media_type(gt)) 578 continue; 579 580 eci[0].gt_id = gt->info.id; 581 logical_mask = bind_exec_queue_logical_mask(xe, gt, eci, 582 args->width, 583 args->num_placements); 584 if (XE_IOCTL_DBG(xe, !logical_mask)) 585 return -EINVAL; 586 587 hwe = find_hw_engine(xe, eci[0]); 588 if (XE_IOCTL_DBG(xe, !hwe)) 589 return -EINVAL; 590 591 /* The migration vm doesn't hold rpm ref */ 592 xe_pm_runtime_get_noresume(xe); 593 594 flags = EXEC_QUEUE_FLAG_VM | (id ? EXEC_QUEUE_FLAG_BIND_ENGINE_CHILD : 0); 595 596 migrate_vm = xe_migrate_get_vm(gt_to_tile(gt)->migrate); 597 new = xe_exec_queue_create(xe, migrate_vm, logical_mask, 598 args->width, hwe, flags, 599 args->extensions); 600 601 xe_pm_runtime_put(xe); /* now held by engine */ 602 603 xe_vm_put(migrate_vm); 604 if (IS_ERR(new)) { 605 err = PTR_ERR(new); 606 if (q) 607 goto put_exec_queue; 608 return err; 609 } 610 if (id == 0) 611 q = new; 612 else 613 list_add_tail(&new->multi_gt_list, 614 &q->multi_gt_link); 615 } 616 } else { 617 gt = xe_device_get_gt(xe, eci[0].gt_id); 618 logical_mask = calc_validate_logical_mask(xe, gt, eci, 619 args->width, 620 args->num_placements); 621 if (XE_IOCTL_DBG(xe, !logical_mask)) 622 return -EINVAL; 623 624 hwe = find_hw_engine(xe, eci[0]); 625 if (XE_IOCTL_DBG(xe, !hwe)) 626 return -EINVAL; 627 628 vm = xe_vm_lookup(xef, args->vm_id); 629 if (XE_IOCTL_DBG(xe, !vm)) 630 return -ENOENT; 631 632 err = down_read_interruptible(&vm->lock); 633 if (err) { 634 xe_vm_put(vm); 635 return err; 636 } 637 638 if (XE_IOCTL_DBG(xe, xe_vm_is_closed_or_banned(vm))) { 639 up_read(&vm->lock); 640 xe_vm_put(vm); 641 return -ENOENT; 642 } 643 644 q = xe_exec_queue_create(xe, vm, logical_mask, 645 args->width, hwe, 0, 646 args->extensions); 647 up_read(&vm->lock); 648 xe_vm_put(vm); 649 if (IS_ERR(q)) 650 return PTR_ERR(q); 651 652 if (xe_vm_in_preempt_fence_mode(vm)) { 653 q->compute.context = dma_fence_context_alloc(1); 654 spin_lock_init(&q->compute.lock); 655 656 err = xe_vm_add_compute_exec_queue(vm, q); 657 if (XE_IOCTL_DBG(xe, err)) 658 goto put_exec_queue; 659 } 660 } 661 662 mutex_lock(&xef->exec_queue.lock); 663 err = xa_alloc(&xef->exec_queue.xa, &id, q, xa_limit_32b, GFP_KERNEL); 664 mutex_unlock(&xef->exec_queue.lock); 665 if (err) 666 goto kill_exec_queue; 667 668 args->exec_queue_id = id; 669 670 return 0; 671 672 kill_exec_queue: 673 xe_exec_queue_kill(q); 674 put_exec_queue: 675 xe_exec_queue_put(q); 676 return err; 677 } 678 679 int xe_exec_queue_get_property_ioctl(struct drm_device *dev, void *data, 680 struct drm_file *file) 681 { 682 struct xe_device *xe = to_xe_device(dev); 683 struct xe_file *xef = to_xe_file(file); 684 struct drm_xe_exec_queue_get_property *args = data; 685 struct xe_exec_queue *q; 686 int ret; 687 688 if (XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1])) 689 return -EINVAL; 690 691 q = xe_exec_queue_lookup(xef, args->exec_queue_id); 692 if (XE_IOCTL_DBG(xe, !q)) 693 return -ENOENT; 694 695 switch (args->property) { 696 case DRM_XE_EXEC_QUEUE_GET_PROPERTY_BAN: 697 args->value = !!(q->flags & EXEC_QUEUE_FLAG_BANNED); 698 ret = 0; 699 break; 700 default: 701 ret = -EINVAL; 702 } 703 704 xe_exec_queue_put(q); 705 706 return ret; 707 } 708 709 /** 710 * xe_exec_queue_is_lr() - Whether an exec_queue is long-running 711 * @q: The exec_queue 712 * 713 * Return: True if the exec_queue is long-running, false otherwise. 714 */ 715 bool xe_exec_queue_is_lr(struct xe_exec_queue *q) 716 { 717 return q->vm && xe_vm_in_lr_mode(q->vm) && 718 !(q->flags & EXEC_QUEUE_FLAG_VM); 719 } 720 721 static s32 xe_exec_queue_num_job_inflight(struct xe_exec_queue *q) 722 { 723 return q->lrc->fence_ctx.next_seqno - xe_lrc_seqno(q->lrc) - 1; 724 } 725 726 /** 727 * xe_exec_queue_ring_full() - Whether an exec_queue's ring is full 728 * @q: The exec_queue 729 * 730 * Return: True if the exec_queue's ring is full, false otherwise. 731 */ 732 bool xe_exec_queue_ring_full(struct xe_exec_queue *q) 733 { 734 struct xe_lrc *lrc = q->lrc; 735 s32 max_job = lrc->ring.size / MAX_JOB_SIZE_BYTES; 736 737 return xe_exec_queue_num_job_inflight(q) >= max_job; 738 } 739 740 /** 741 * xe_exec_queue_is_idle() - Whether an exec_queue is idle. 742 * @q: The exec_queue 743 * 744 * FIXME: Need to determine what to use as the short-lived 745 * timeline lock for the exec_queues, so that the return value 746 * of this function becomes more than just an advisory 747 * snapshot in time. The timeline lock must protect the 748 * seqno from racing submissions on the same exec_queue. 749 * Typically vm->resv, but user-created timeline locks use the migrate vm 750 * and never grabs the migrate vm->resv so we have a race there. 751 * 752 * Return: True if the exec_queue is idle, false otherwise. 753 */ 754 bool xe_exec_queue_is_idle(struct xe_exec_queue *q) 755 { 756 if (xe_exec_queue_is_parallel(q)) { 757 int i; 758 759 for (i = 0; i < q->width; ++i) { 760 if (xe_lrc_seqno(&q->lrc[i]) != 761 q->lrc[i].fence_ctx.next_seqno - 1) 762 return false; 763 } 764 765 return true; 766 } 767 768 return xe_lrc_seqno(&q->lrc[0]) == 769 q->lrc[0].fence_ctx.next_seqno - 1; 770 } 771 772 void xe_exec_queue_kill(struct xe_exec_queue *q) 773 { 774 struct xe_exec_queue *eq = q, *next; 775 776 list_for_each_entry_safe(eq, next, &eq->multi_gt_list, 777 multi_gt_link) { 778 q->ops->kill(eq); 779 xe_vm_remove_compute_exec_queue(q->vm, eq); 780 } 781 782 q->ops->kill(q); 783 xe_vm_remove_compute_exec_queue(q->vm, q); 784 } 785 786 int xe_exec_queue_destroy_ioctl(struct drm_device *dev, void *data, 787 struct drm_file *file) 788 { 789 struct xe_device *xe = to_xe_device(dev); 790 struct xe_file *xef = to_xe_file(file); 791 struct drm_xe_exec_queue_destroy *args = data; 792 struct xe_exec_queue *q; 793 794 if (XE_IOCTL_DBG(xe, args->pad) || 795 XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1])) 796 return -EINVAL; 797 798 mutex_lock(&xef->exec_queue.lock); 799 q = xa_erase(&xef->exec_queue.xa, args->exec_queue_id); 800 mutex_unlock(&xef->exec_queue.lock); 801 if (XE_IOCTL_DBG(xe, !q)) 802 return -ENOENT; 803 804 xe_exec_queue_kill(q); 805 806 trace_xe_exec_queue_close(q); 807 xe_exec_queue_put(q); 808 809 return 0; 810 } 811 812 static void xe_exec_queue_last_fence_lockdep_assert(struct xe_exec_queue *q, 813 struct xe_vm *vm) 814 { 815 if (q->flags & EXEC_QUEUE_FLAG_VM) 816 lockdep_assert_held(&vm->lock); 817 else 818 xe_vm_assert_held(vm); 819 } 820 821 /** 822 * xe_exec_queue_last_fence_put() - Drop ref to last fence 823 * @q: The exec queue 824 * @vm: The VM the engine does a bind or exec for 825 */ 826 void xe_exec_queue_last_fence_put(struct xe_exec_queue *q, struct xe_vm *vm) 827 { 828 xe_exec_queue_last_fence_lockdep_assert(q, vm); 829 830 if (q->last_fence) { 831 dma_fence_put(q->last_fence); 832 q->last_fence = NULL; 833 } 834 } 835 836 /** 837 * xe_exec_queue_last_fence_put_unlocked() - Drop ref to last fence unlocked 838 * @q: The exec queue 839 * 840 * Only safe to be called from xe_exec_queue_destroy(). 841 */ 842 void xe_exec_queue_last_fence_put_unlocked(struct xe_exec_queue *q) 843 { 844 if (q->last_fence) { 845 dma_fence_put(q->last_fence); 846 q->last_fence = NULL; 847 } 848 } 849 850 /** 851 * xe_exec_queue_last_fence_get() - Get last fence 852 * @q: The exec queue 853 * @vm: The VM the engine does a bind or exec for 854 * 855 * Get last fence, takes a ref 856 * 857 * Returns: last fence if not signaled, dma fence stub if signaled 858 */ 859 struct dma_fence *xe_exec_queue_last_fence_get(struct xe_exec_queue *q, 860 struct xe_vm *vm) 861 { 862 struct dma_fence *fence; 863 864 xe_exec_queue_last_fence_lockdep_assert(q, vm); 865 866 if (q->last_fence && 867 test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &q->last_fence->flags)) 868 xe_exec_queue_last_fence_put(q, vm); 869 870 fence = q->last_fence ? q->last_fence : dma_fence_get_stub(); 871 dma_fence_get(fence); 872 return fence; 873 } 874 875 /** 876 * xe_exec_queue_last_fence_set() - Set last fence 877 * @q: The exec queue 878 * @vm: The VM the engine does a bind or exec for 879 * @fence: The fence 880 * 881 * Set the last fence for the engine. Increases reference count for fence, when 882 * closing engine xe_exec_queue_last_fence_put should be called. 883 */ 884 void xe_exec_queue_last_fence_set(struct xe_exec_queue *q, struct xe_vm *vm, 885 struct dma_fence *fence) 886 { 887 xe_exec_queue_last_fence_lockdep_assert(q, vm); 888 889 xe_exec_queue_last_fence_put(q, vm); 890 q->last_fence = dma_fence_get(fence); 891 } 892