1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* 3 * Copyright 2014-2022 Advanced Micro Devices, Inc. 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 shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 */ 24 25 #include <linux/slab.h> 26 #include <linux/list.h> 27 #include "kfd_device_queue_manager.h" 28 #include "kfd_priv.h" 29 #include "kfd_kernel_queue.h" 30 #include "amdgpu_amdkfd.h" 31 32 static inline struct process_queue_node *get_queue_by_qid( 33 struct process_queue_manager *pqm, unsigned int qid) 34 { 35 struct process_queue_node *pqn; 36 37 list_for_each_entry(pqn, &pqm->queues, process_queue_list) { 38 if ((pqn->q && pqn->q->properties.queue_id == qid) || 39 (pqn->kq && pqn->kq->queue->properties.queue_id == qid)) 40 return pqn; 41 } 42 43 return NULL; 44 } 45 46 static int assign_queue_slot_by_qid(struct process_queue_manager *pqm, 47 unsigned int qid) 48 { 49 if (qid >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) 50 return -EINVAL; 51 52 if (__test_and_set_bit(qid, pqm->queue_slot_bitmap)) { 53 pr_err("Cannot create new queue because requested qid(%u) is in use\n", qid); 54 return -ENOSPC; 55 } 56 57 return 0; 58 } 59 60 static int find_available_queue_slot(struct process_queue_manager *pqm, 61 unsigned int *qid) 62 { 63 unsigned long found; 64 65 found = find_first_zero_bit(pqm->queue_slot_bitmap, 66 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS); 67 68 pr_debug("The new slot id %lu\n", found); 69 70 if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) { 71 pr_info("Cannot open more queues for process with pasid 0x%x\n", 72 pqm->process->pasid); 73 return -ENOMEM; 74 } 75 76 set_bit(found, pqm->queue_slot_bitmap); 77 *qid = found; 78 79 return 0; 80 } 81 82 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd) 83 { 84 struct kfd_dev *dev = pdd->dev; 85 86 if (pdd->already_dequeued) 87 return; 88 89 dev->dqm->ops.process_termination(dev->dqm, &pdd->qpd); 90 pdd->already_dequeued = true; 91 } 92 93 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid, 94 void *gws) 95 { 96 struct kfd_dev *dev = NULL; 97 struct process_queue_node *pqn; 98 struct kfd_process_device *pdd; 99 struct kgd_mem *mem = NULL; 100 int ret; 101 102 pqn = get_queue_by_qid(pqm, qid); 103 if (!pqn) { 104 pr_err("Queue id does not match any known queue\n"); 105 return -EINVAL; 106 } 107 108 if (pqn->q) 109 dev = pqn->q->device; 110 if (WARN_ON(!dev)) 111 return -ENODEV; 112 113 pdd = kfd_get_process_device_data(dev, pqm->process); 114 if (!pdd) { 115 pr_err("Process device data doesn't exist\n"); 116 return -EINVAL; 117 } 118 119 /* Only allow one queue per process can have GWS assigned */ 120 if (gws && pdd->qpd.num_gws) 121 return -EBUSY; 122 123 if (!gws && pdd->qpd.num_gws == 0) 124 return -EINVAL; 125 126 if (gws) 127 ret = amdgpu_amdkfd_add_gws_to_process(pdd->process->kgd_process_info, 128 gws, &mem); 129 else 130 ret = amdgpu_amdkfd_remove_gws_from_process(pdd->process->kgd_process_info, 131 pqn->q->gws); 132 if (unlikely(ret)) 133 return ret; 134 135 pqn->q->gws = mem; 136 pdd->qpd.num_gws = gws ? dev->adev->gds.gws_size : 0; 137 138 return pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm, 139 pqn->q, NULL); 140 } 141 142 void kfd_process_dequeue_from_all_devices(struct kfd_process *p) 143 { 144 int i; 145 146 for (i = 0; i < p->n_pdds; i++) 147 kfd_process_dequeue_from_device(p->pdds[i]); 148 } 149 150 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p) 151 { 152 INIT_LIST_HEAD(&pqm->queues); 153 pqm->queue_slot_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, 154 GFP_KERNEL); 155 if (!pqm->queue_slot_bitmap) 156 return -ENOMEM; 157 pqm->process = p; 158 159 return 0; 160 } 161 162 void pqm_uninit(struct process_queue_manager *pqm) 163 { 164 struct process_queue_node *pqn, *next; 165 166 list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) { 167 if (pqn->q && pqn->q->gws) 168 amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info, 169 pqn->q->gws); 170 kfd_procfs_del_queue(pqn->q); 171 uninit_queue(pqn->q); 172 list_del(&pqn->process_queue_list); 173 kfree(pqn); 174 } 175 176 bitmap_free(pqm->queue_slot_bitmap); 177 pqm->queue_slot_bitmap = NULL; 178 } 179 180 static int init_user_queue(struct process_queue_manager *pqm, 181 struct kfd_dev *dev, struct queue **q, 182 struct queue_properties *q_properties, 183 struct file *f, struct amdgpu_bo *wptr_bo, 184 unsigned int qid) 185 { 186 int retval; 187 188 /* Doorbell initialized in user space*/ 189 q_properties->doorbell_ptr = NULL; 190 191 /* let DQM handle it*/ 192 q_properties->vmid = 0; 193 q_properties->queue_id = qid; 194 195 retval = init_queue(q, q_properties); 196 if (retval != 0) 197 return retval; 198 199 (*q)->device = dev; 200 (*q)->process = pqm->process; 201 202 if (dev->shared_resources.enable_mes) { 203 retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev, 204 AMDGPU_MES_GANG_CTX_SIZE, 205 &(*q)->gang_ctx_bo, 206 &(*q)->gang_ctx_gpu_addr, 207 &(*q)->gang_ctx_cpu_ptr, 208 false); 209 if (retval) { 210 pr_err("failed to allocate gang context bo\n"); 211 goto cleanup; 212 } 213 memset((*q)->gang_ctx_cpu_ptr, 0, AMDGPU_MES_GANG_CTX_SIZE); 214 (*q)->wptr_bo = wptr_bo; 215 } 216 217 pr_debug("PQM After init queue"); 218 return 0; 219 220 cleanup: 221 if (dev->shared_resources.enable_mes) 222 uninit_queue(*q); 223 return retval; 224 } 225 226 int pqm_create_queue(struct process_queue_manager *pqm, 227 struct kfd_dev *dev, 228 struct file *f, 229 struct queue_properties *properties, 230 unsigned int *qid, 231 struct amdgpu_bo *wptr_bo, 232 const struct kfd_criu_queue_priv_data *q_data, 233 const void *restore_mqd, 234 const void *restore_ctl_stack, 235 uint32_t *p_doorbell_offset_in_process) 236 { 237 int retval; 238 struct kfd_process_device *pdd; 239 struct queue *q; 240 struct process_queue_node *pqn; 241 struct kernel_queue *kq; 242 enum kfd_queue_type type = properties->type; 243 unsigned int max_queues = 127; /* HWS limit */ 244 245 q = NULL; 246 kq = NULL; 247 248 pdd = kfd_get_process_device_data(dev, pqm->process); 249 if (!pdd) { 250 pr_err("Process device data doesn't exist\n"); 251 return -1; 252 } 253 254 /* 255 * for debug process, verify that it is within the static queues limit 256 * currently limit is set to half of the total avail HQD slots 257 * If we are just about to create DIQ, the is_debug flag is not set yet 258 * Hence we also check the type as well 259 */ 260 if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ)) 261 max_queues = dev->device_info.max_no_of_hqd/2; 262 263 if (pdd->qpd.queue_count >= max_queues) 264 return -ENOSPC; 265 266 if (q_data) { 267 retval = assign_queue_slot_by_qid(pqm, q_data->q_id); 268 *qid = q_data->q_id; 269 } else 270 retval = find_available_queue_slot(pqm, qid); 271 272 if (retval != 0) 273 return retval; 274 275 if (list_empty(&pdd->qpd.queues_list) && 276 list_empty(&pdd->qpd.priv_queue_list)) 277 dev->dqm->ops.register_process(dev->dqm, &pdd->qpd); 278 279 pqn = kzalloc(sizeof(*pqn), GFP_KERNEL); 280 if (!pqn) { 281 retval = -ENOMEM; 282 goto err_allocate_pqn; 283 } 284 285 switch (type) { 286 case KFD_QUEUE_TYPE_SDMA: 287 case KFD_QUEUE_TYPE_SDMA_XGMI: 288 /* SDMA queues are always allocated statically no matter 289 * which scheduler mode is used. We also do not need to 290 * check whether a SDMA queue can be allocated here, because 291 * allocate_sdma_queue() in create_queue() has the 292 * corresponding check logic. 293 */ 294 retval = init_user_queue(pqm, dev, &q, properties, f, wptr_bo, *qid); 295 if (retval != 0) 296 goto err_create_queue; 297 pqn->q = q; 298 pqn->kq = NULL; 299 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data, 300 restore_mqd, restore_ctl_stack); 301 print_queue(q); 302 break; 303 304 case KFD_QUEUE_TYPE_COMPUTE: 305 /* check if there is over subscription */ 306 if ((dev->dqm->sched_policy == 307 KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) && 308 ((dev->dqm->processes_count >= dev->vm_info.vmid_num_kfd) || 309 (dev->dqm->active_queue_count >= get_cp_queues_num(dev->dqm)))) { 310 pr_debug("Over-subscription is not allowed when amdkfd.sched_policy == 1\n"); 311 retval = -EPERM; 312 goto err_create_queue; 313 } 314 315 retval = init_user_queue(pqm, dev, &q, properties, f, wptr_bo, *qid); 316 if (retval != 0) 317 goto err_create_queue; 318 pqn->q = q; 319 pqn->kq = NULL; 320 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data, 321 restore_mqd, restore_ctl_stack); 322 print_queue(q); 323 break; 324 case KFD_QUEUE_TYPE_DIQ: 325 kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_DIQ); 326 if (!kq) { 327 retval = -ENOMEM; 328 goto err_create_queue; 329 } 330 kq->queue->properties.queue_id = *qid; 331 pqn->kq = kq; 332 pqn->q = NULL; 333 retval = dev->dqm->ops.create_kernel_queue(dev->dqm, 334 kq, &pdd->qpd); 335 break; 336 default: 337 WARN(1, "Invalid queue type %d", type); 338 retval = -EINVAL; 339 } 340 341 if (retval != 0) { 342 pr_err("Pasid 0x%x DQM create queue type %d failed. ret %d\n", 343 pqm->process->pasid, type, retval); 344 goto err_create_queue; 345 } 346 347 if (q && p_doorbell_offset_in_process) 348 /* Return the doorbell offset within the doorbell page 349 * to the caller so it can be passed up to user mode 350 * (in bytes). 351 * There are always 1024 doorbells per process, so in case 352 * of 8-byte doorbells, there are two doorbell pages per 353 * process. 354 */ 355 *p_doorbell_offset_in_process = 356 (q->properties.doorbell_off * sizeof(uint32_t)) & 357 (kfd_doorbell_process_slice(dev) - 1); 358 359 pr_debug("PQM After DQM create queue\n"); 360 361 list_add(&pqn->process_queue_list, &pqm->queues); 362 363 if (q) { 364 pr_debug("PQM done creating queue\n"); 365 kfd_procfs_add_queue(q); 366 print_queue_properties(&q->properties); 367 } 368 369 return retval; 370 371 err_create_queue: 372 uninit_queue(q); 373 if (kq) 374 kernel_queue_uninit(kq, false); 375 kfree(pqn); 376 err_allocate_pqn: 377 /* check if queues list is empty unregister process from device */ 378 clear_bit(*qid, pqm->queue_slot_bitmap); 379 if (list_empty(&pdd->qpd.queues_list) && 380 list_empty(&pdd->qpd.priv_queue_list)) 381 dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd); 382 return retval; 383 } 384 385 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid) 386 { 387 struct process_queue_node *pqn; 388 struct kfd_process_device *pdd; 389 struct device_queue_manager *dqm; 390 struct kfd_dev *dev; 391 int retval; 392 393 dqm = NULL; 394 395 retval = 0; 396 397 pqn = get_queue_by_qid(pqm, qid); 398 if (!pqn) { 399 pr_err("Queue id does not match any known queue\n"); 400 return -EINVAL; 401 } 402 403 dev = NULL; 404 if (pqn->kq) 405 dev = pqn->kq->dev; 406 if (pqn->q) 407 dev = pqn->q->device; 408 if (WARN_ON(!dev)) 409 return -ENODEV; 410 411 pdd = kfd_get_process_device_data(dev, pqm->process); 412 if (!pdd) { 413 pr_err("Process device data doesn't exist\n"); 414 return -1; 415 } 416 417 if (pqn->kq) { 418 /* destroy kernel queue (DIQ) */ 419 dqm = pqn->kq->dev->dqm; 420 dqm->ops.destroy_kernel_queue(dqm, pqn->kq, &pdd->qpd); 421 kernel_queue_uninit(pqn->kq, false); 422 } 423 424 if (pqn->q) { 425 kfd_procfs_del_queue(pqn->q); 426 dqm = pqn->q->device->dqm; 427 retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q); 428 if (retval) { 429 pr_err("Pasid 0x%x destroy queue %d failed, ret %d\n", 430 pqm->process->pasid, 431 pqn->q->properties.queue_id, retval); 432 if (retval != -ETIME) 433 goto err_destroy_queue; 434 } 435 436 if (pqn->q->gws) { 437 amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info, 438 pqn->q->gws); 439 pdd->qpd.num_gws = 0; 440 } 441 442 if (dev->shared_resources.enable_mes) { 443 amdgpu_amdkfd_free_gtt_mem(dev->adev, 444 pqn->q->gang_ctx_bo); 445 if (pqn->q->wptr_bo) 446 amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->wptr_bo); 447 448 } 449 uninit_queue(pqn->q); 450 } 451 452 list_del(&pqn->process_queue_list); 453 kfree(pqn); 454 clear_bit(qid, pqm->queue_slot_bitmap); 455 456 if (list_empty(&pdd->qpd.queues_list) && 457 list_empty(&pdd->qpd.priv_queue_list)) 458 dqm->ops.unregister_process(dqm, &pdd->qpd); 459 460 err_destroy_queue: 461 return retval; 462 } 463 464 int pqm_update_queue_properties(struct process_queue_manager *pqm, 465 unsigned int qid, struct queue_properties *p) 466 { 467 int retval; 468 struct process_queue_node *pqn; 469 470 pqn = get_queue_by_qid(pqm, qid); 471 if (!pqn) { 472 pr_debug("No queue %d exists for update operation\n", qid); 473 return -EFAULT; 474 } 475 476 pqn->q->properties.queue_address = p->queue_address; 477 pqn->q->properties.queue_size = p->queue_size; 478 pqn->q->properties.queue_percent = p->queue_percent; 479 pqn->q->properties.priority = p->priority; 480 481 retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm, 482 pqn->q, NULL); 483 if (retval != 0) 484 return retval; 485 486 return 0; 487 } 488 489 int pqm_update_mqd(struct process_queue_manager *pqm, 490 unsigned int qid, struct mqd_update_info *minfo) 491 { 492 int retval; 493 struct process_queue_node *pqn; 494 495 pqn = get_queue_by_qid(pqm, qid); 496 if (!pqn) { 497 pr_debug("No queue %d exists for update operation\n", qid); 498 return -EFAULT; 499 } 500 501 /* ASICs that have WGPs must enforce pairwise enabled mask checks. */ 502 if (minfo && minfo->update_flag == UPDATE_FLAG_CU_MASK && minfo->cu_mask.ptr && 503 KFD_GC_VERSION(pqn->q->device) >= IP_VERSION(10, 0, 0)) { 504 int i; 505 506 for (i = 0; i < minfo->cu_mask.count; i += 2) { 507 uint32_t cu_pair = (minfo->cu_mask.ptr[i / 32] >> (i % 32)) & 0x3; 508 509 if (cu_pair && cu_pair != 0x3) { 510 pr_debug("CUs must be adjacent pairwise enabled.\n"); 511 return -EINVAL; 512 } 513 } 514 } 515 516 retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm, 517 pqn->q, minfo); 518 if (retval != 0) 519 return retval; 520 521 return 0; 522 } 523 524 struct kernel_queue *pqm_get_kernel_queue( 525 struct process_queue_manager *pqm, 526 unsigned int qid) 527 { 528 struct process_queue_node *pqn; 529 530 pqn = get_queue_by_qid(pqm, qid); 531 if (pqn && pqn->kq) 532 return pqn->kq; 533 534 return NULL; 535 } 536 537 struct queue *pqm_get_user_queue(struct process_queue_manager *pqm, 538 unsigned int qid) 539 { 540 struct process_queue_node *pqn; 541 542 pqn = get_queue_by_qid(pqm, qid); 543 return pqn ? pqn->q : NULL; 544 } 545 546 int pqm_get_wave_state(struct process_queue_manager *pqm, 547 unsigned int qid, 548 void __user *ctl_stack, 549 u32 *ctl_stack_used_size, 550 u32 *save_area_used_size) 551 { 552 struct process_queue_node *pqn; 553 554 pqn = get_queue_by_qid(pqm, qid); 555 if (!pqn) { 556 pr_debug("amdkfd: No queue %d exists for operation\n", 557 qid); 558 return -EFAULT; 559 } 560 561 return pqn->q->device->dqm->ops.get_wave_state(pqn->q->device->dqm, 562 pqn->q, 563 ctl_stack, 564 ctl_stack_used_size, 565 save_area_used_size); 566 } 567 568 static int get_queue_data_sizes(struct kfd_process_device *pdd, 569 struct queue *q, 570 uint32_t *mqd_size, 571 uint32_t *ctl_stack_size) 572 { 573 int ret; 574 575 ret = pqm_get_queue_checkpoint_info(&pdd->process->pqm, 576 q->properties.queue_id, 577 mqd_size, 578 ctl_stack_size); 579 if (ret) 580 pr_err("Failed to get queue dump info (%d)\n", ret); 581 582 return ret; 583 } 584 585 int kfd_process_get_queue_info(struct kfd_process *p, 586 uint32_t *num_queues, 587 uint64_t *priv_data_sizes) 588 { 589 uint32_t extra_data_sizes = 0; 590 struct queue *q; 591 int i; 592 int ret; 593 594 *num_queues = 0; 595 596 /* Run over all PDDs of the process */ 597 for (i = 0; i < p->n_pdds; i++) { 598 struct kfd_process_device *pdd = p->pdds[i]; 599 600 list_for_each_entry(q, &pdd->qpd.queues_list, list) { 601 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE || 602 q->properties.type == KFD_QUEUE_TYPE_SDMA || 603 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) { 604 uint32_t mqd_size, ctl_stack_size; 605 606 *num_queues = *num_queues + 1; 607 608 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size); 609 if (ret) 610 return ret; 611 612 extra_data_sizes += mqd_size + ctl_stack_size; 613 } else { 614 pr_err("Unsupported queue type (%d)\n", q->properties.type); 615 return -EOPNOTSUPP; 616 } 617 } 618 } 619 *priv_data_sizes = extra_data_sizes + 620 (*num_queues * sizeof(struct kfd_criu_queue_priv_data)); 621 622 return 0; 623 } 624 625 static int pqm_checkpoint_mqd(struct process_queue_manager *pqm, 626 unsigned int qid, 627 void *mqd, 628 void *ctl_stack) 629 { 630 struct process_queue_node *pqn; 631 632 pqn = get_queue_by_qid(pqm, qid); 633 if (!pqn) { 634 pr_debug("amdkfd: No queue %d exists for operation\n", qid); 635 return -EFAULT; 636 } 637 638 if (!pqn->q->device->dqm->ops.checkpoint_mqd) { 639 pr_err("amdkfd: queue dumping not supported on this device\n"); 640 return -EOPNOTSUPP; 641 } 642 643 return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm, 644 pqn->q, mqd, ctl_stack); 645 } 646 647 static int criu_checkpoint_queue(struct kfd_process_device *pdd, 648 struct queue *q, 649 struct kfd_criu_queue_priv_data *q_data) 650 { 651 uint8_t *mqd, *ctl_stack; 652 int ret; 653 654 mqd = (void *)(q_data + 1); 655 ctl_stack = mqd + q_data->mqd_size; 656 657 q_data->gpu_id = pdd->user_gpu_id; 658 q_data->type = q->properties.type; 659 q_data->format = q->properties.format; 660 q_data->q_id = q->properties.queue_id; 661 q_data->q_address = q->properties.queue_address; 662 q_data->q_size = q->properties.queue_size; 663 q_data->priority = q->properties.priority; 664 q_data->q_percent = q->properties.queue_percent; 665 q_data->read_ptr_addr = (uint64_t)q->properties.read_ptr; 666 q_data->write_ptr_addr = (uint64_t)q->properties.write_ptr; 667 q_data->doorbell_id = q->doorbell_id; 668 669 q_data->sdma_id = q->sdma_id; 670 671 q_data->eop_ring_buffer_address = 672 q->properties.eop_ring_buffer_address; 673 674 q_data->eop_ring_buffer_size = q->properties.eop_ring_buffer_size; 675 676 q_data->ctx_save_restore_area_address = 677 q->properties.ctx_save_restore_area_address; 678 679 q_data->ctx_save_restore_area_size = 680 q->properties.ctx_save_restore_area_size; 681 682 q_data->gws = !!q->gws; 683 684 ret = pqm_checkpoint_mqd(&pdd->process->pqm, q->properties.queue_id, mqd, ctl_stack); 685 if (ret) { 686 pr_err("Failed checkpoint queue_mqd (%d)\n", ret); 687 return ret; 688 } 689 690 pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id); 691 return ret; 692 } 693 694 static int criu_checkpoint_queues_device(struct kfd_process_device *pdd, 695 uint8_t __user *user_priv, 696 unsigned int *q_index, 697 uint64_t *queues_priv_data_offset) 698 { 699 unsigned int q_private_data_size = 0; 700 uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */ 701 struct queue *q; 702 int ret = 0; 703 704 list_for_each_entry(q, &pdd->qpd.queues_list, list) { 705 struct kfd_criu_queue_priv_data *q_data; 706 uint64_t q_data_size; 707 uint32_t mqd_size; 708 uint32_t ctl_stack_size; 709 710 if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE && 711 q->properties.type != KFD_QUEUE_TYPE_SDMA && 712 q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) { 713 714 pr_err("Unsupported queue type (%d)\n", q->properties.type); 715 ret = -EOPNOTSUPP; 716 break; 717 } 718 719 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size); 720 if (ret) 721 break; 722 723 q_data_size = sizeof(*q_data) + mqd_size + ctl_stack_size; 724 725 /* Increase local buffer space if needed */ 726 if (q_private_data_size < q_data_size) { 727 kfree(q_private_data); 728 729 q_private_data = kzalloc(q_data_size, GFP_KERNEL); 730 if (!q_private_data) { 731 ret = -ENOMEM; 732 break; 733 } 734 q_private_data_size = q_data_size; 735 } 736 737 q_data = (struct kfd_criu_queue_priv_data *)q_private_data; 738 739 /* data stored in this order: priv_data, mqd, ctl_stack */ 740 q_data->mqd_size = mqd_size; 741 q_data->ctl_stack_size = ctl_stack_size; 742 743 ret = criu_checkpoint_queue(pdd, q, q_data); 744 if (ret) 745 break; 746 747 q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE; 748 749 ret = copy_to_user(user_priv + *queues_priv_data_offset, 750 q_data, q_data_size); 751 if (ret) { 752 ret = -EFAULT; 753 break; 754 } 755 *queues_priv_data_offset += q_data_size; 756 *q_index = *q_index + 1; 757 } 758 759 kfree(q_private_data); 760 761 return ret; 762 } 763 764 int kfd_criu_checkpoint_queues(struct kfd_process *p, 765 uint8_t __user *user_priv_data, 766 uint64_t *priv_data_offset) 767 { 768 int ret = 0, pdd_index, q_index = 0; 769 770 for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) { 771 struct kfd_process_device *pdd = p->pdds[pdd_index]; 772 773 /* 774 * criu_checkpoint_queues_device will copy data to user and update q_index and 775 * queues_priv_data_offset 776 */ 777 ret = criu_checkpoint_queues_device(pdd, user_priv_data, &q_index, 778 priv_data_offset); 779 780 if (ret) 781 break; 782 } 783 784 return ret; 785 } 786 787 static void set_queue_properties_from_criu(struct queue_properties *qp, 788 struct kfd_criu_queue_priv_data *q_data) 789 { 790 qp->is_interop = false; 791 qp->queue_percent = q_data->q_percent; 792 qp->priority = q_data->priority; 793 qp->queue_address = q_data->q_address; 794 qp->queue_size = q_data->q_size; 795 qp->read_ptr = (uint32_t *) q_data->read_ptr_addr; 796 qp->write_ptr = (uint32_t *) q_data->write_ptr_addr; 797 qp->eop_ring_buffer_address = q_data->eop_ring_buffer_address; 798 qp->eop_ring_buffer_size = q_data->eop_ring_buffer_size; 799 qp->ctx_save_restore_area_address = q_data->ctx_save_restore_area_address; 800 qp->ctx_save_restore_area_size = q_data->ctx_save_restore_area_size; 801 qp->ctl_stack_size = q_data->ctl_stack_size; 802 qp->type = q_data->type; 803 qp->format = q_data->format; 804 } 805 806 int kfd_criu_restore_queue(struct kfd_process *p, 807 uint8_t __user *user_priv_ptr, 808 uint64_t *priv_data_offset, 809 uint64_t max_priv_data_size) 810 { 811 uint8_t *mqd, *ctl_stack, *q_extra_data = NULL; 812 struct kfd_criu_queue_priv_data *q_data; 813 struct kfd_process_device *pdd; 814 uint64_t q_extra_data_size; 815 struct queue_properties qp; 816 unsigned int queue_id; 817 int ret = 0; 818 819 if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size) 820 return -EINVAL; 821 822 q_data = kmalloc(sizeof(*q_data), GFP_KERNEL); 823 if (!q_data) 824 return -ENOMEM; 825 826 ret = copy_from_user(q_data, user_priv_ptr + *priv_data_offset, sizeof(*q_data)); 827 if (ret) { 828 ret = -EFAULT; 829 goto exit; 830 } 831 832 *priv_data_offset += sizeof(*q_data); 833 q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size; 834 835 if (*priv_data_offset + q_extra_data_size > max_priv_data_size) { 836 ret = -EINVAL; 837 goto exit; 838 } 839 840 q_extra_data = kmalloc(q_extra_data_size, GFP_KERNEL); 841 if (!q_extra_data) { 842 ret = -ENOMEM; 843 goto exit; 844 } 845 846 ret = copy_from_user(q_extra_data, user_priv_ptr + *priv_data_offset, q_extra_data_size); 847 if (ret) { 848 ret = -EFAULT; 849 goto exit; 850 } 851 852 *priv_data_offset += q_extra_data_size; 853 854 pdd = kfd_process_device_data_by_id(p, q_data->gpu_id); 855 if (!pdd) { 856 pr_err("Failed to get pdd\n"); 857 ret = -EINVAL; 858 goto exit; 859 } 860 861 if (!pdd->doorbell_index && 862 kfd_alloc_process_doorbells(pdd->dev, &pdd->doorbell_index) < 0) { 863 ret = -ENOMEM; 864 goto exit; 865 } 866 867 /* data stored in this order: mqd, ctl_stack */ 868 mqd = q_extra_data; 869 ctl_stack = mqd + q_data->mqd_size; 870 871 memset(&qp, 0, sizeof(qp)); 872 set_queue_properties_from_criu(&qp, q_data); 873 874 print_queue_properties(&qp); 875 876 ret = pqm_create_queue(&p->pqm, pdd->dev, NULL, &qp, &queue_id, NULL, q_data, mqd, ctl_stack, 877 NULL); 878 if (ret) { 879 pr_err("Failed to create new queue err:%d\n", ret); 880 goto exit; 881 } 882 883 if (q_data->gws) 884 ret = pqm_set_gws(&p->pqm, q_data->q_id, pdd->dev->gws); 885 886 exit: 887 if (ret) 888 pr_err("Failed to restore queue (%d)\n", ret); 889 else 890 pr_debug("Queue id %d was restored successfully\n", queue_id); 891 892 kfree(q_data); 893 894 return ret; 895 } 896 897 int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm, 898 unsigned int qid, 899 uint32_t *mqd_size, 900 uint32_t *ctl_stack_size) 901 { 902 struct process_queue_node *pqn; 903 904 pqn = get_queue_by_qid(pqm, qid); 905 if (!pqn) { 906 pr_debug("amdkfd: No queue %d exists for operation\n", qid); 907 return -EFAULT; 908 } 909 910 if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) { 911 pr_err("amdkfd: queue dumping not supported on this device\n"); 912 return -EOPNOTSUPP; 913 } 914 915 pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm, 916 pqn->q, mqd_size, 917 ctl_stack_size); 918 return 0; 919 } 920 921 #if defined(CONFIG_DEBUG_FS) 922 923 int pqm_debugfs_mqds(struct seq_file *m, void *data) 924 { 925 struct process_queue_manager *pqm = data; 926 struct process_queue_node *pqn; 927 struct queue *q; 928 enum KFD_MQD_TYPE mqd_type; 929 struct mqd_manager *mqd_mgr; 930 int r = 0; 931 932 list_for_each_entry(pqn, &pqm->queues, process_queue_list) { 933 if (pqn->q) { 934 q = pqn->q; 935 switch (q->properties.type) { 936 case KFD_QUEUE_TYPE_SDMA: 937 case KFD_QUEUE_TYPE_SDMA_XGMI: 938 seq_printf(m, " SDMA queue on device %x\n", 939 q->device->id); 940 mqd_type = KFD_MQD_TYPE_SDMA; 941 break; 942 case KFD_QUEUE_TYPE_COMPUTE: 943 seq_printf(m, " Compute queue on device %x\n", 944 q->device->id); 945 mqd_type = KFD_MQD_TYPE_CP; 946 break; 947 default: 948 seq_printf(m, 949 " Bad user queue type %d on device %x\n", 950 q->properties.type, q->device->id); 951 continue; 952 } 953 mqd_mgr = q->device->dqm->mqd_mgrs[mqd_type]; 954 } else if (pqn->kq) { 955 q = pqn->kq->queue; 956 mqd_mgr = pqn->kq->mqd_mgr; 957 switch (q->properties.type) { 958 case KFD_QUEUE_TYPE_DIQ: 959 seq_printf(m, " DIQ on device %x\n", 960 pqn->kq->dev->id); 961 break; 962 default: 963 seq_printf(m, 964 " Bad kernel queue type %d on device %x\n", 965 q->properties.type, 966 pqn->kq->dev->id); 967 continue; 968 } 969 } else { 970 seq_printf(m, 971 " Weird: Queue node with neither kernel nor user queue\n"); 972 continue; 973 } 974 975 r = mqd_mgr->debugfs_show_mqd(m, q->mqd); 976 if (r != 0) 977 break; 978 } 979 980 return r; 981 } 982 983 #endif 984