1/*
   2 * Copyright 2014 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 */
  23
  24#include <linux/ratelimit.h>
  25#include <linux/printk.h>
  26#include <linux/slab.h>
  27#include <linux/list.h>
  28#include <linux/types.h>
  29#include <linux/bitops.h>
  30#include <linux/sched.h>
  31#include "kfd_priv.h"
  32#include "kfd_device_queue_manager.h"
  33#include "kfd_mqd_manager.h"
  34#include "cik_regs.h"
  35#include "kfd_kernel_queue.h"
  36#include "amdgpu_amdkfd.h"
  37
  38/* Size of the per-pipe EOP queue */
  39#define CIK_HPD_EOP_BYTES_LOG2 11
  40#define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2)
  41
  42static int set_pasid_vmid_mapping(struct device_queue_manager *dqm,
  43					unsigned int pasid, unsigned int vmid);
  44
  45static int execute_queues_cpsch(struct device_queue_manager *dqm,
  46				enum kfd_unmap_queues_filter filter,
  47				uint32_t filter_param);
  48static int unmap_queues_cpsch(struct device_queue_manager *dqm,
  49				enum kfd_unmap_queues_filter filter,
  50				uint32_t filter_param);
  51
  52static int map_queues_cpsch(struct device_queue_manager *dqm);
  53
  54static void deallocate_sdma_queue(struct device_queue_manager *dqm,
  55				struct queue *q);
  56
  57static inline void deallocate_hqd(struct device_queue_manager *dqm,
  58				struct queue *q);
  59static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q);
  60static int allocate_sdma_queue(struct device_queue_manager *dqm,
  61				struct queue *q);
  62static void kfd_process_hw_exception(struct work_struct *work);
  63
  64static inline
  65enum KFD_MQD_TYPE get_mqd_type_from_queue_type(enum kfd_queue_type type)
  66{
  67	if (type == KFD_QUEUE_TYPE_SDMA || type == KFD_QUEUE_TYPE_SDMA_XGMI)
  68		return KFD_MQD_TYPE_SDMA;
  69	return KFD_MQD_TYPE_CP;
  70}
  71
  72static bool is_pipe_enabled(struct device_queue_manager *dqm, int mec, int pipe)
  73{
  74	int i;
  75	int pipe_offset = mec * dqm->dev->shared_resources.num_pipe_per_mec
  76		+ pipe * dqm->dev->shared_resources.num_queue_per_pipe;
  77
  78	/* queue is available for KFD usage if bit is 1 */
  79	for (i = 0; i <  dqm->dev->shared_resources.num_queue_per_pipe; ++i)
  80		if (test_bit(pipe_offset + i,
  81			      dqm->dev->shared_resources.cp_queue_bitmap))
  82			return true;
  83	return false;
  84}
  85
  86unsigned int get_cp_queues_num(struct device_queue_manager *dqm)
  87{
  88	return bitmap_weight(dqm->dev->shared_resources.cp_queue_bitmap,
  89				KGD_MAX_QUEUES);
  90}
  91
  92unsigned int get_queues_per_pipe(struct device_queue_manager *dqm)
  93{
  94	return dqm->dev->shared_resources.num_queue_per_pipe;
  95}
  96
  97unsigned int get_pipes_per_mec(struct device_queue_manager *dqm)
  98{
  99	return dqm->dev->shared_resources.num_pipe_per_mec;
 100}
 101
 102static unsigned int get_num_sdma_engines(struct device_queue_manager *dqm)
 103{
 104	return dqm->dev->device_info->num_sdma_engines;
 105}
 106
 107static unsigned int get_num_xgmi_sdma_engines(struct device_queue_manager *dqm)
 108{
 109	return dqm->dev->device_info->num_xgmi_sdma_engines;
 110}
 111
 112static unsigned int get_num_all_sdma_engines(struct device_queue_manager *dqm)
 113{
 114	return get_num_sdma_engines(dqm) + get_num_xgmi_sdma_engines(dqm);
 115}
 116
 117unsigned int get_num_sdma_queues(struct device_queue_manager *dqm)
 118{
 119	return dqm->dev->device_info->num_sdma_engines
 120			* dqm->dev->device_info->num_sdma_queues_per_engine;
 121}
 122
 123unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm)
 124{
 125	return dqm->dev->device_info->num_xgmi_sdma_engines
 126			* dqm->dev->device_info->num_sdma_queues_per_engine;
 127}
 128
 129void program_sh_mem_settings(struct device_queue_manager *dqm,
 130					struct qcm_process_device *qpd)
 131{
 132	return dqm->dev->kfd2kgd->program_sh_mem_settings(
 133						dqm->dev->kgd, qpd->vmid,
 134						qpd->sh_mem_config,
 135						qpd->sh_mem_ape1_base,
 136						qpd->sh_mem_ape1_limit,
 137						qpd->sh_mem_bases);
 138}
 139
 140static void increment_queue_count(struct device_queue_manager *dqm,
 141			enum kfd_queue_type type)
 142{
 143	dqm->active_queue_count++;
 144	if (type == KFD_QUEUE_TYPE_COMPUTE || type == KFD_QUEUE_TYPE_DIQ)
 145		dqm->active_cp_queue_count++;
 146}
 147
 148static void decrement_queue_count(struct device_queue_manager *dqm,
 149			enum kfd_queue_type type)
 150{
 151	dqm->active_queue_count--;
 152	if (type == KFD_QUEUE_TYPE_COMPUTE || type == KFD_QUEUE_TYPE_DIQ)
 153		dqm->active_cp_queue_count--;
 154}
 155
 156int read_sdma_queue_counter(uint64_t q_rptr, uint64_t *val)
 157{
 158	int ret;
 159	uint64_t tmp = 0;
 160
 161	if (!val)
 162		return -EINVAL;
 163	/*
 164	 * SDMA activity counter is stored at queue's RPTR + 0x8 location.
 165	 */
 166	if (!access_ok((const void __user *)(q_rptr +
 167					sizeof(uint64_t)), sizeof(uint64_t))) {
 168		pr_err("Can't access sdma queue activity counter\n");
 169		return -EFAULT;
 170	}
 171
 172	ret = get_user(tmp, (uint64_t *)(q_rptr + sizeof(uint64_t)));
 173	if (!ret) {
 174		*val = tmp;
 175	}
 176
 177	return ret;
 178}
 179
 180static int allocate_doorbell(struct qcm_process_device *qpd, struct queue *q)
 181{
 182	struct kfd_dev *dev = qpd->dqm->dev;
 183
 184	if (!KFD_IS_SOC15(dev->device_info->asic_family)) {
 185		/* On pre-SOC15 chips we need to use the queue ID to
 186		 * preserve the user mode ABI.
 187		 */
 188		q->doorbell_id = q->properties.queue_id;
 189	} else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 190			q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 191		/* For SDMA queues on SOC15 with 8-byte doorbell, use static
 192		 * doorbell assignments based on the engine and queue id.
 193		 * The doobell index distance between RLC (2*i) and (2*i+1)
 194		 * for a SDMA engine is 512.
 195		 */
 196		uint32_t *idx_offset =
 197				dev->shared_resources.sdma_doorbell_idx;
 198
 199		q->doorbell_id = idx_offset[q->properties.sdma_engine_id]
 200			+ (q->properties.sdma_queue_id & 1)
 201			* KFD_QUEUE_DOORBELL_MIRROR_OFFSET
 202			+ (q->properties.sdma_queue_id >> 1);
 203	} else {
 204		/* For CP queues on SOC15 reserve a free doorbell ID */
 205		unsigned int found;
 206
 207		found = find_first_zero_bit(qpd->doorbell_bitmap,
 208					    KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
 209		if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
 210			pr_debug("No doorbells available");
 211			return -EBUSY;
 212		}
 213		set_bit(found, qpd->doorbell_bitmap);
 214		q->doorbell_id = found;
 215	}
 216
 217	q->properties.doorbell_off =
 218		kfd_get_doorbell_dw_offset_in_bar(dev, q->process,
 219					  q->doorbell_id);
 220
 221	return 0;
 222}
 223
 224static void deallocate_doorbell(struct qcm_process_device *qpd,
 225				struct queue *q)
 226{
 227	unsigned int old;
 228	struct kfd_dev *dev = qpd->dqm->dev;
 229
 230	if (!KFD_IS_SOC15(dev->device_info->asic_family) ||
 231	    q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 232	    q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 233		return;
 234
 235	old = test_and_clear_bit(q->doorbell_id, qpd->doorbell_bitmap);
 236	WARN_ON(!old);
 237}
 238
 239static int allocate_vmid(struct device_queue_manager *dqm,
 240			struct qcm_process_device *qpd,
 241			struct queue *q)
 242{
 243	int allocated_vmid = -1, i;
 244
 245	for (i = dqm->dev->vm_info.first_vmid_kfd;
 246			i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
 247		if (!dqm->vmid_pasid[i]) {
 248			allocated_vmid = i;
 249			break;
 250		}
 251	}
 252
 253	if (allocated_vmid < 0) {
 254		pr_err("no more vmid to allocate\n");
 255		return -ENOSPC;
 256	}
 257
 258	pr_debug("vmid allocated: %d\n", allocated_vmid);
 259
 260	dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
 261
 262	set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
 
 263
 
 
 264	qpd->vmid = allocated_vmid;
 265	q->properties.vmid = allocated_vmid;
 266
 
 267	program_sh_mem_settings(dqm, qpd);
 268
 269	/* qpd->page_table_base is set earlier when register_process()
 270	 * is called, i.e. when the first queue is created.
 271	 */
 272	dqm->dev->kfd2kgd->set_vm_context_page_table_base(dqm->dev->kgd,
 273			qpd->vmid,
 274			qpd->page_table_base);
 275	/* invalidate the VM context after pasid and vmid mapping is set up */
 276	kfd_flush_tlb(qpd_to_pdd(qpd));
 277
 278	if (dqm->dev->kfd2kgd->set_scratch_backing_va)
 279		dqm->dev->kfd2kgd->set_scratch_backing_va(dqm->dev->kgd,
 280				qpd->sh_hidden_private_base, qpd->vmid);
 281
 282	return 0;
 283}
 284
 285static int flush_texture_cache_nocpsch(struct kfd_dev *kdev,
 286				struct qcm_process_device *qpd)
 287{
 288	const struct packet_manager_funcs *pmf = qpd->dqm->packets.pmf;
 289	int ret;
 290
 291	if (!qpd->ib_kaddr)
 292		return -ENOMEM;
 293
 294	ret = pmf->release_mem(qpd->ib_base, (uint32_t *)qpd->ib_kaddr);
 295	if (ret)
 296		return ret;
 297
 298	return amdgpu_amdkfd_submit_ib(kdev->kgd, KGD_ENGINE_MEC1, qpd->vmid,
 299				qpd->ib_base, (uint32_t *)qpd->ib_kaddr,
 300				pmf->release_mem_size / sizeof(uint32_t));
 301}
 302
 303static void deallocate_vmid(struct device_queue_manager *dqm,
 304				struct qcm_process_device *qpd,
 305				struct queue *q)
 306{
 
 
 307	/* On GFX v7, CP doesn't flush TC at dequeue */
 308	if (q->device->device_info->asic_family == CHIP_HAWAII)
 309		if (flush_texture_cache_nocpsch(q->device, qpd))
 310			pr_err("Failed to flush TC\n");
 311
 312	kfd_flush_tlb(qpd_to_pdd(qpd));
 313
 314	/* Release the vmid mapping */
 315	set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
 316	dqm->vmid_pasid[qpd->vmid] = 0;
 317
 
 318	qpd->vmid = 0;
 319	q->properties.vmid = 0;
 320}
 321
 322static int create_queue_nocpsch(struct device_queue_manager *dqm,
 323				struct queue *q,
 324				struct qcm_process_device *qpd)
 325{
 326	struct mqd_manager *mqd_mgr;
 327	int retval;
 328
 
 
 329	dqm_lock(dqm);
 330
 331	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
 332		pr_warn("Can't create new usermode queue because %d queues were already created\n",
 333				dqm->total_queue_count);
 334		retval = -EPERM;
 335		goto out_unlock;
 336	}
 337
 338	if (list_empty(&qpd->queues_list)) {
 339		retval = allocate_vmid(dqm, qpd, q);
 340		if (retval)
 341			goto out_unlock;
 342	}
 343	q->properties.vmid = qpd->vmid;
 344	/*
 345	 * Eviction state logic: mark all queues as evicted, even ones
 346	 * not currently active. Restoring inactive queues later only
 347	 * updates the is_evicted flag but is a no-op otherwise.
 348	 */
 349	q->properties.is_evicted = !!qpd->evicted;
 350
 351	q->properties.tba_addr = qpd->tba_addr;
 352	q->properties.tma_addr = qpd->tma_addr;
 353
 354	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 355			q->properties.type)];
 356	if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
 357		retval = allocate_hqd(dqm, q);
 358		if (retval)
 359			goto deallocate_vmid;
 360		pr_debug("Loading mqd to hqd on pipe %d, queue %d\n",
 361			q->pipe, q->queue);
 362	} else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 363		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
 364		retval = allocate_sdma_queue(dqm, q);
 365		if (retval)
 366			goto deallocate_vmid;
 367		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
 368	}
 369
 370	retval = allocate_doorbell(qpd, q);
 371	if (retval)
 372		goto out_deallocate_hqd;
 373
 374	/* Temporarily release dqm lock to avoid a circular lock dependency */
 375	dqm_unlock(dqm);
 376	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
 377	dqm_lock(dqm);
 378
 379	if (!q->mqd_mem_obj) {
 380		retval = -ENOMEM;
 381		goto out_deallocate_doorbell;
 382	}
 383	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
 384				&q->gart_mqd_addr, &q->properties);
 385	if (q->properties.is_active) {
 386		if (!dqm->sched_running) {
 387			WARN_ONCE(1, "Load non-HWS mqd while stopped\n");
 388			goto add_queue_to_list;
 389		}
 390
 391		if (WARN(q->process->mm != current->mm,
 392					"should only run in user thread"))
 393			retval = -EFAULT;
 394		else
 395			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 396					q->queue, &q->properties, current->mm);
 397		if (retval)
 398			goto out_free_mqd;
 399	}
 400
 401add_queue_to_list:
 402	list_add(&q->list, &qpd->queues_list);
 403	qpd->queue_count++;
 404	if (q->properties.is_active)
 405		increment_queue_count(dqm, q->properties.type);
 
 
 
 
 
 406
 407	/*
 408	 * Unconditionally increment this counter, regardless of the queue's
 409	 * type or whether the queue is active.
 410	 */
 411	dqm->total_queue_count++;
 412	pr_debug("Total of %d queues are accountable so far\n",
 413			dqm->total_queue_count);
 414	goto out_unlock;
 415
 416out_free_mqd:
 417	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 418out_deallocate_doorbell:
 419	deallocate_doorbell(qpd, q);
 420out_deallocate_hqd:
 421	if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
 422		deallocate_hqd(dqm, q);
 423	else if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 424		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 425		deallocate_sdma_queue(dqm, q);
 426deallocate_vmid:
 427	if (list_empty(&qpd->queues_list))
 428		deallocate_vmid(dqm, qpd, q);
 429out_unlock:
 430	dqm_unlock(dqm);
 431	return retval;
 432}
 433
 434static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
 435{
 436	bool set;
 437	int pipe, bit, i;
 438
 439	set = false;
 440
 441	for (pipe = dqm->next_pipe_to_allocate, i = 0;
 442			i < get_pipes_per_mec(dqm);
 443			pipe = ((pipe + 1) % get_pipes_per_mec(dqm)), ++i) {
 444
 445		if (!is_pipe_enabled(dqm, 0, pipe))
 446			continue;
 447
 448		if (dqm->allocated_queues[pipe] != 0) {
 449			bit = ffs(dqm->allocated_queues[pipe]) - 1;
 450			dqm->allocated_queues[pipe] &= ~(1 << bit);
 451			q->pipe = pipe;
 452			q->queue = bit;
 453			set = true;
 454			break;
 455		}
 456	}
 457
 458	if (!set)
 459		return -EBUSY;
 460
 461	pr_debug("hqd slot - pipe %d, queue %d\n", q->pipe, q->queue);
 462	/* horizontal hqd allocation */
 463	dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_per_mec(dqm);
 464
 465	return 0;
 466}
 467
 468static inline void deallocate_hqd(struct device_queue_manager *dqm,
 469				struct queue *q)
 470{
 471	dqm->allocated_queues[q->pipe] |= (1 << q->queue);
 472}
 473
 474/* Access to DQM has to be locked before calling destroy_queue_nocpsch_locked
 475 * to avoid asynchronized access
 476 */
 477static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
 478				struct qcm_process_device *qpd,
 479				struct queue *q)
 480{
 481	int retval;
 482	struct mqd_manager *mqd_mgr;
 483
 484	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 485			q->properties.type)];
 486
 487	if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
 488		deallocate_hqd(dqm, q);
 489	else if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
 
 490		deallocate_sdma_queue(dqm, q);
 491	else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 
 492		deallocate_sdma_queue(dqm, q);
 493	else {
 494		pr_debug("q->properties.type %d is invalid\n",
 495				q->properties.type);
 496		return -EINVAL;
 497	}
 498	dqm->total_queue_count--;
 499
 500	deallocate_doorbell(qpd, q);
 501
 502	if (!dqm->sched_running) {
 503		WARN_ONCE(1, "Destroy non-HWS queue while stopped\n");
 504		return 0;
 505	}
 506
 507	retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 508				KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
 509				KFD_UNMAP_LATENCY_MS,
 510				q->pipe, q->queue);
 511	if (retval == -ETIME)
 512		qpd->reset_wavefronts = true;
 513
 514
 515	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
 516
 517	list_del(&q->list);
 518	if (list_empty(&qpd->queues_list)) {
 519		if (qpd->reset_wavefronts) {
 520			pr_warn("Resetting wave fronts (nocpsch) on dev %p\n",
 521					dqm->dev);
 522			/* dbgdev_wave_reset_wavefronts has to be called before
 523			 * deallocate_vmid(), i.e. when vmid is still in use.
 524			 */
 525			dbgdev_wave_reset_wavefronts(dqm->dev,
 526					qpd->pqm->process);
 527			qpd->reset_wavefronts = false;
 528		}
 529
 530		deallocate_vmid(dqm, qpd, q);
 531	}
 532	qpd->queue_count--;
 533	if (q->properties.is_active) {
 534		decrement_queue_count(dqm, q->properties.type);
 535		if (q->properties.is_gws) {
 536			dqm->gws_queue_count--;
 537			qpd->mapped_gws_queue = false;
 538		}
 539	}
 540
 541	return retval;
 542}
 543
 544static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
 545				struct qcm_process_device *qpd,
 546				struct queue *q)
 547{
 548	int retval;
 549	uint64_t sdma_val = 0;
 550	struct kfd_process_device *pdd = qpd_to_pdd(qpd);
 551
 552	/* Get the SDMA queue stats */
 553	if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
 554	    (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 555		retval = read_sdma_queue_counter((uint64_t)q->properties.read_ptr,
 556							&sdma_val);
 557		if (retval)
 558			pr_err("Failed to read SDMA queue counter for queue: %d\n",
 559				q->properties.queue_id);
 560	}
 561
 562	dqm_lock(dqm);
 563	retval = destroy_queue_nocpsch_locked(dqm, qpd, q);
 564	if (!retval)
 565		pdd->sdma_past_activity_counter += sdma_val;
 566	dqm_unlock(dqm);
 567
 568	return retval;
 569}
 570
 571static int update_queue(struct device_queue_manager *dqm, struct queue *q)
 572{
 573	int retval = 0;
 574	struct mqd_manager *mqd_mgr;
 575	struct kfd_process_device *pdd;
 576	bool prev_active = false;
 577
 578	dqm_lock(dqm);
 579	pdd = kfd_get_process_device_data(q->device, q->process);
 580	if (!pdd) {
 581		retval = -ENODEV;
 582		goto out_unlock;
 583	}
 584	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 585			q->properties.type)];
 586
 587	/* Save previous activity state for counters */
 588	prev_active = q->properties.is_active;
 589
 590	/* Make sure the queue is unmapped before updating the MQD */
 591	if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS) {
 592		retval = unmap_queues_cpsch(dqm,
 593				KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 594		if (retval) {
 595			pr_err("unmap queue failed\n");
 596			goto out_unlock;
 597		}
 598	} else if (prev_active &&
 599		   (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 600		    q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 601		    q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 602
 603		if (!dqm->sched_running) {
 604			WARN_ONCE(1, "Update non-HWS queue while stopped\n");
 605			goto out_unlock;
 606		}
 607
 608		retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 609				KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN,
 610				KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
 611		if (retval) {
 612			pr_err("destroy mqd failed\n");
 613			goto out_unlock;
 614		}
 615	}
 616
 617	mqd_mgr->update_mqd(mqd_mgr, q->mqd, &q->properties);
 618
 619	/*
 620	 * check active state vs. the previous state and modify
 621	 * counter accordingly. map_queues_cpsch uses the
 622	 * dqm->active_queue_count to determine whether a new runlist must be
 623	 * uploaded.
 624	 */
 625	if (q->properties.is_active && !prev_active)
 626		increment_queue_count(dqm, q->properties.type);
 627	else if (!q->properties.is_active && prev_active)
 628		decrement_queue_count(dqm, q->properties.type);
 629
 630	if (q->gws && !q->properties.is_gws) {
 631		if (q->properties.is_active) {
 632			dqm->gws_queue_count++;
 633			pdd->qpd.mapped_gws_queue = true;
 634		}
 635		q->properties.is_gws = true;
 636	} else if (!q->gws && q->properties.is_gws) {
 637		if (q->properties.is_active) {
 638			dqm->gws_queue_count--;
 639			pdd->qpd.mapped_gws_queue = false;
 640		}
 641		q->properties.is_gws = false;
 642	}
 643
 644	if (dqm->sched_policy != KFD_SCHED_POLICY_NO_HWS)
 645		retval = map_queues_cpsch(dqm);
 646	else if (q->properties.is_active &&
 647		 (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
 648		  q->properties.type == KFD_QUEUE_TYPE_SDMA ||
 649		  q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 650		if (WARN(q->process->mm != current->mm,
 651			 "should only run in user thread"))
 652			retval = -EFAULT;
 653		else
 654			retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd,
 655						   q->pipe, q->queue,
 656						   &q->properties, current->mm);
 657	}
 658
 659out_unlock:
 660	dqm_unlock(dqm);
 661	return retval;
 662}
 663
 664static int evict_process_queues_nocpsch(struct device_queue_manager *dqm,
 665					struct qcm_process_device *qpd)
 666{
 667	struct queue *q;
 668	struct mqd_manager *mqd_mgr;
 669	struct kfd_process_device *pdd;
 670	int retval, ret = 0;
 671
 672	dqm_lock(dqm);
 673	if (qpd->evicted++ > 0) /* already evicted, do nothing */
 674		goto out;
 675
 676	pdd = qpd_to_pdd(qpd);
 677	pr_info_ratelimited("Evicting PASID 0x%x queues\n",
 678			    pdd->process->pasid);
 679
 680	/* Mark all queues as evicted. Deactivate all active queues on
 681	 * the qpd.
 682	 */
 683	list_for_each_entry(q, &qpd->queues_list, list) {
 684		q->properties.is_evicted = true;
 685		if (!q->properties.is_active)
 686			continue;
 687
 688		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 689				q->properties.type)];
 690		q->properties.is_active = false;
 691		decrement_queue_count(dqm, q->properties.type);
 692		if (q->properties.is_gws) {
 693			dqm->gws_queue_count--;
 694			qpd->mapped_gws_queue = false;
 695		}
 696
 697		if (WARN_ONCE(!dqm->sched_running, "Evict when stopped\n"))
 698			continue;
 699
 700		retval = mqd_mgr->destroy_mqd(mqd_mgr, q->mqd,
 701				KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN,
 702				KFD_UNMAP_LATENCY_MS, q->pipe, q->queue);
 703		if (retval && !ret)
 704			/* Return the first error, but keep going to
 705			 * maintain a consistent eviction state
 706			 */
 707			ret = retval;
 
 708	}
 709
 710out:
 711	dqm_unlock(dqm);
 712	return ret;
 713}
 714
 715static int evict_process_queues_cpsch(struct device_queue_manager *dqm,
 716				      struct qcm_process_device *qpd)
 717{
 718	struct queue *q;
 719	struct kfd_process_device *pdd;
 720	int retval = 0;
 721
 722	dqm_lock(dqm);
 723	if (qpd->evicted++ > 0) /* already evicted, do nothing */
 724		goto out;
 725
 726	pdd = qpd_to_pdd(qpd);
 727	pr_info_ratelimited("Evicting PASID 0x%x queues\n",
 728			    pdd->process->pasid);
 729
 730	/* Mark all queues as evicted. Deactivate all active queues on
 731	 * the qpd.
 732	 */
 733	list_for_each_entry(q, &qpd->queues_list, list) {
 734		q->properties.is_evicted = true;
 735		if (!q->properties.is_active)
 736			continue;
 737
 738		q->properties.is_active = false;
 739		decrement_queue_count(dqm, q->properties.type);
 740	}
 741	retval = execute_queues_cpsch(dqm,
 742				qpd->is_debug ?
 743				KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES :
 744				KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 745
 746out:
 747	dqm_unlock(dqm);
 748	return retval;
 749}
 750
 751static int restore_process_queues_nocpsch(struct device_queue_manager *dqm,
 752					  struct qcm_process_device *qpd)
 753{
 754	struct mm_struct *mm = NULL;
 755	struct queue *q;
 756	struct mqd_manager *mqd_mgr;
 757	struct kfd_process_device *pdd;
 758	uint64_t pd_base;
 759	int retval, ret = 0;
 760
 761	pdd = qpd_to_pdd(qpd);
 762	/* Retrieve PD base */
 763	pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 764
 765	dqm_lock(dqm);
 766	if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
 767		goto out;
 768	if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
 769		qpd->evicted--;
 770		goto out;
 771	}
 772
 773	pr_info_ratelimited("Restoring PASID 0x%x queues\n",
 774			    pdd->process->pasid);
 775
 776	/* Update PD Base in QPD */
 777	qpd->page_table_base = pd_base;
 778	pr_debug("Updated PD address to 0x%llx\n", pd_base);
 779
 780	if (!list_empty(&qpd->queues_list)) {
 781		dqm->dev->kfd2kgd->set_vm_context_page_table_base(
 782				dqm->dev->kgd,
 783				qpd->vmid,
 784				qpd->page_table_base);
 785		kfd_flush_tlb(pdd);
 786	}
 787
 788	/* Take a safe reference to the mm_struct, which may otherwise
 789	 * disappear even while the kfd_process is still referenced.
 790	 */
 791	mm = get_task_mm(pdd->process->lead_thread);
 792	if (!mm) {
 793		ret = -EFAULT;
 794		goto out;
 795	}
 796
 797	/* Remove the eviction flags. Activate queues that are not
 798	 * inactive for other reasons.
 799	 */
 800	list_for_each_entry(q, &qpd->queues_list, list) {
 801		q->properties.is_evicted = false;
 802		if (!QUEUE_IS_ACTIVE(q->properties))
 803			continue;
 804
 805		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
 806				q->properties.type)];
 807		q->properties.is_active = true;
 808		increment_queue_count(dqm, q->properties.type);
 809		if (q->properties.is_gws) {
 810			dqm->gws_queue_count++;
 811			qpd->mapped_gws_queue = true;
 812		}
 813
 814		if (WARN_ONCE(!dqm->sched_running, "Restore when stopped\n"))
 815			continue;
 816
 817		retval = mqd_mgr->load_mqd(mqd_mgr, q->mqd, q->pipe,
 818				       q->queue, &q->properties, mm);
 819		if (retval && !ret)
 820			/* Return the first error, but keep going to
 821			 * maintain a consistent eviction state
 822			 */
 823			ret = retval;
 
 824	}
 825	qpd->evicted = 0;
 826out:
 827	if (mm)
 828		mmput(mm);
 829	dqm_unlock(dqm);
 830	return ret;
 831}
 832
 833static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
 834					struct qcm_process_device *qpd)
 835{
 836	struct queue *q;
 837	struct kfd_process_device *pdd;
 838	uint64_t pd_base;
 839	int retval = 0;
 840
 841	pdd = qpd_to_pdd(qpd);
 842	/* Retrieve PD base */
 843	pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 844
 845	dqm_lock(dqm);
 846	if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
 847		goto out;
 848	if (qpd->evicted > 1) { /* ref count still > 0, decrement & quit */
 849		qpd->evicted--;
 850		goto out;
 851	}
 852
 853	pr_info_ratelimited("Restoring PASID 0x%x queues\n",
 854			    pdd->process->pasid);
 855
 856	/* Update PD Base in QPD */
 857	qpd->page_table_base = pd_base;
 858	pr_debug("Updated PD address to 0x%llx\n", pd_base);
 859
 860	/* activate all active queues on the qpd */
 861	list_for_each_entry(q, &qpd->queues_list, list) {
 862		q->properties.is_evicted = false;
 863		if (!QUEUE_IS_ACTIVE(q->properties))
 864			continue;
 865
 866		q->properties.is_active = true;
 867		increment_queue_count(dqm, q->properties.type);
 868	}
 869	retval = execute_queues_cpsch(dqm,
 870				KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
 871	qpd->evicted = 0;
 872out:
 873	dqm_unlock(dqm);
 874	return retval;
 875}
 876
 877static int register_process(struct device_queue_manager *dqm,
 878					struct qcm_process_device *qpd)
 879{
 880	struct device_process_node *n;
 881	struct kfd_process_device *pdd;
 882	uint64_t pd_base;
 883	int retval;
 884
 885	n = kzalloc(sizeof(*n), GFP_KERNEL);
 886	if (!n)
 887		return -ENOMEM;
 888
 889	n->qpd = qpd;
 890
 891	pdd = qpd_to_pdd(qpd);
 892	/* Retrieve PD base */
 893	pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
 894
 895	dqm_lock(dqm);
 896	list_add(&n->list, &dqm->queues);
 897
 898	/* Update PD Base in QPD */
 899	qpd->page_table_base = pd_base;
 900	pr_debug("Updated PD address to 0x%llx\n", pd_base);
 901
 902	retval = dqm->asic_ops.update_qpd(dqm, qpd);
 903
 904	dqm->processes_count++;
 905
 906	dqm_unlock(dqm);
 907
 908	/* Outside the DQM lock because under the DQM lock we can't do
 909	 * reclaim or take other locks that others hold while reclaiming.
 910	 */
 911	kfd_inc_compute_active(dqm->dev);
 912
 913	return retval;
 914}
 915
 916static int unregister_process(struct device_queue_manager *dqm,
 917					struct qcm_process_device *qpd)
 918{
 919	int retval;
 920	struct device_process_node *cur, *next;
 921
 922	pr_debug("qpd->queues_list is %s\n",
 923			list_empty(&qpd->queues_list) ? "empty" : "not empty");
 924
 925	retval = 0;
 926	dqm_lock(dqm);
 927
 928	list_for_each_entry_safe(cur, next, &dqm->queues, list) {
 929		if (qpd == cur->qpd) {
 930			list_del(&cur->list);
 931			kfree(cur);
 932			dqm->processes_count--;
 933			goto out;
 934		}
 935	}
 936	/* qpd not found in dqm list */
 937	retval = 1;
 938out:
 939	dqm_unlock(dqm);
 940
 941	/* Outside the DQM lock because under the DQM lock we can't do
 942	 * reclaim or take other locks that others hold while reclaiming.
 943	 */
 944	if (!retval)
 945		kfd_dec_compute_active(dqm->dev);
 946
 947	return retval;
 948}
 949
 950static int
 951set_pasid_vmid_mapping(struct device_queue_manager *dqm, unsigned int pasid,
 952			unsigned int vmid)
 953{
 954	return dqm->dev->kfd2kgd->set_pasid_vmid_mapping(
 955						dqm->dev->kgd, pasid, vmid);
 956}
 957
 958static void init_interrupts(struct device_queue_manager *dqm)
 959{
 960	unsigned int i;
 961
 962	for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++)
 963		if (is_pipe_enabled(dqm, 0, i))
 964			dqm->dev->kfd2kgd->init_interrupts(dqm->dev->kgd, i);
 965}
 966
 967static int initialize_nocpsch(struct device_queue_manager *dqm)
 968{
 969	int pipe, queue;
 970
 971	pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
 972
 973	dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
 974					sizeof(unsigned int), GFP_KERNEL);
 975	if (!dqm->allocated_queues)
 976		return -ENOMEM;
 977
 978	mutex_init(&dqm->lock_hidden);
 979	INIT_LIST_HEAD(&dqm->queues);
 980	dqm->active_queue_count = dqm->next_pipe_to_allocate = 0;
 981	dqm->active_cp_queue_count = 0;
 982	dqm->gws_queue_count = 0;
 983
 984	for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
 985		int pipe_offset = pipe * get_queues_per_pipe(dqm);
 986
 987		for (queue = 0; queue < get_queues_per_pipe(dqm); queue++)
 988			if (test_bit(pipe_offset + queue,
 989				     dqm->dev->shared_resources.cp_queue_bitmap))
 990				dqm->allocated_queues[pipe] |= 1 << queue;
 991	}
 992
 993	memset(dqm->vmid_pasid, 0, sizeof(dqm->vmid_pasid));
 994
 995	dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
 996	dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
 997
 998	return 0;
 999}
1000
1001static void uninitialize(struct device_queue_manager *dqm)
1002{
1003	int i;
1004
1005	WARN_ON(dqm->active_queue_count > 0 || dqm->processes_count > 0);
1006
1007	kfree(dqm->allocated_queues);
1008	for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++)
1009		kfree(dqm->mqd_mgrs[i]);
1010	mutex_destroy(&dqm->lock_hidden);
 
1011}
1012
1013static int start_nocpsch(struct device_queue_manager *dqm)
1014{
1015	pr_info("SW scheduler is used");
1016	init_interrupts(dqm);
1017	
1018	if (dqm->dev->device_info->asic_family == CHIP_HAWAII)
1019		return pm_init(&dqm->packets, dqm);
1020	dqm->sched_running = true;
1021
1022	return 0;
1023}
1024
1025static int stop_nocpsch(struct device_queue_manager *dqm)
1026{
1027	if (dqm->dev->device_info->asic_family == CHIP_HAWAII)
1028		pm_uninit(&dqm->packets, false);
1029	dqm->sched_running = false;
1030
1031	return 0;
1032}
1033
1034static void pre_reset(struct device_queue_manager *dqm)
1035{
1036	dqm_lock(dqm);
1037	dqm->is_resetting = true;
1038	dqm_unlock(dqm);
1039}
1040
1041static int allocate_sdma_queue(struct device_queue_manager *dqm,
1042				struct queue *q)
1043{
1044	int bit;
1045
1046	if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1047		if (dqm->sdma_bitmap == 0) {
1048			pr_err("No more SDMA queue to allocate\n");
1049			return -ENOMEM;
1050		}
1051
1052		bit = __ffs64(dqm->sdma_bitmap);
1053		dqm->sdma_bitmap &= ~(1ULL << bit);
1054		q->sdma_id = bit;
1055		q->properties.sdma_engine_id = q->sdma_id %
1056				get_num_sdma_engines(dqm);
1057		q->properties.sdma_queue_id = q->sdma_id /
1058				get_num_sdma_engines(dqm);
1059	} else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1060		if (dqm->xgmi_sdma_bitmap == 0) {
1061			pr_err("No more XGMI SDMA queue to allocate\n");
1062			return -ENOMEM;
1063		}
1064		bit = __ffs64(dqm->xgmi_sdma_bitmap);
1065		dqm->xgmi_sdma_bitmap &= ~(1ULL << bit);
1066		q->sdma_id = bit;
1067		/* sdma_engine_id is sdma id including
1068		 * both PCIe-optimized SDMAs and XGMI-
1069		 * optimized SDMAs. The calculation below
1070		 * assumes the first N engines are always
1071		 * PCIe-optimized ones
1072		 */
1073		q->properties.sdma_engine_id = get_num_sdma_engines(dqm) +
1074				q->sdma_id % get_num_xgmi_sdma_engines(dqm);
1075		q->properties.sdma_queue_id = q->sdma_id /
1076				get_num_xgmi_sdma_engines(dqm);
1077	}
1078
1079	pr_debug("SDMA engine id: %d\n", q->properties.sdma_engine_id);
1080	pr_debug("SDMA queue id: %d\n", q->properties.sdma_queue_id);
1081
1082	return 0;
1083}
1084
1085static void deallocate_sdma_queue(struct device_queue_manager *dqm,
1086				struct queue *q)
1087{
1088	if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
1089		if (q->sdma_id >= get_num_sdma_queues(dqm))
1090			return;
1091		dqm->sdma_bitmap |= (1ULL << q->sdma_id);
1092	} else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1093		if (q->sdma_id >= get_num_xgmi_sdma_queues(dqm))
1094			return;
1095		dqm->xgmi_sdma_bitmap |= (1ULL << q->sdma_id);
1096	}
1097}
1098
1099/*
1100 * Device Queue Manager implementation for cp scheduler
1101 */
1102
1103static int set_sched_resources(struct device_queue_manager *dqm)
1104{
1105	int i, mec;
1106	struct scheduling_resources res;
1107
1108	res.vmid_mask = dqm->dev->shared_resources.compute_vmid_bitmap;
1109
1110	res.queue_mask = 0;
1111	for (i = 0; i < KGD_MAX_QUEUES; ++i) {
1112		mec = (i / dqm->dev->shared_resources.num_queue_per_pipe)
1113			/ dqm->dev->shared_resources.num_pipe_per_mec;
1114
1115		if (!test_bit(i, dqm->dev->shared_resources.cp_queue_bitmap))
1116			continue;
1117
1118		/* only acquire queues from the first MEC */
1119		if (mec > 0)
1120			continue;
1121
1122		/* This situation may be hit in the future if a new HW
1123		 * generation exposes more than 64 queues. If so, the
1124		 * definition of res.queue_mask needs updating
1125		 */
1126		if (WARN_ON(i >= (sizeof(res.queue_mask)*8))) {
1127			pr_err("Invalid queue enabled by amdgpu: %d\n", i);
1128			break;
1129		}
1130
1131		res.queue_mask |= 1ull
1132			<< amdgpu_queue_mask_bit_to_set_resource_bit(
1133				(struct amdgpu_device *)dqm->dev->kgd, i);
1134	}
1135	res.gws_mask = ~0ull;
1136	res.oac_mask = res.gds_heap_base = res.gds_heap_size = 0;
1137
1138	pr_debug("Scheduling resources:\n"
1139			"vmid mask: 0x%8X\n"
1140			"queue mask: 0x%8llX\n",
1141			res.vmid_mask, res.queue_mask);
1142
1143	return pm_send_set_resources(&dqm->packets, &res);
1144}
1145
1146static int initialize_cpsch(struct device_queue_manager *dqm)
1147{
1148	pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
1149
1150	mutex_init(&dqm->lock_hidden);
1151	INIT_LIST_HEAD(&dqm->queues);
1152	dqm->active_queue_count = dqm->processes_count = 0;
1153	dqm->active_cp_queue_count = 0;
1154	dqm->gws_queue_count = 0;
1155	dqm->active_runlist = false;
1156	dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
1157	dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
1158
1159	INIT_WORK(&dqm->hw_exception_work, kfd_process_hw_exception);
1160
1161	return 0;
1162}
1163
1164static int start_cpsch(struct device_queue_manager *dqm)
1165{
1166	int retval;
1167
1168	retval = 0;
1169
1170	retval = pm_init(&dqm->packets, dqm);
1171	if (retval)
1172		goto fail_packet_manager_init;
1173
1174	retval = set_sched_resources(dqm);
1175	if (retval)
1176		goto fail_set_sched_resources;
1177
1178	pr_debug("Allocating fence memory\n");
1179
1180	/* allocate fence memory on the gart */
1181	retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr),
1182					&dqm->fence_mem);
1183
1184	if (retval)
1185		goto fail_allocate_vidmem;
1186
1187	dqm->fence_addr = dqm->fence_mem->cpu_ptr;
1188	dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr;
1189
1190	init_interrupts(dqm);
1191
1192	dqm_lock(dqm);
1193	/* clear hang status when driver try to start the hw scheduler */
1194	dqm->is_hws_hang = false;
1195	dqm->is_resetting = false;
1196	dqm->sched_running = true;
1197	execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1198	dqm_unlock(dqm);
1199
1200	return 0;
1201fail_allocate_vidmem:
1202fail_set_sched_resources:
1203	pm_uninit(&dqm->packets, false);
1204fail_packet_manager_init:
1205	return retval;
1206}
1207
1208static int stop_cpsch(struct device_queue_manager *dqm)
1209{
1210	bool hanging;
1211
1212	dqm_lock(dqm);
1213	if (!dqm->is_hws_hang)
1214		unmap_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
1215	hanging = dqm->is_hws_hang || dqm->is_resetting;
1216	dqm->sched_running = false;
1217	dqm_unlock(dqm);
1218
1219	pm_release_ib(&dqm->packets);
1220
1221	kfd_gtt_sa_free(dqm->dev, dqm->fence_mem);
1222	pm_uninit(&dqm->packets, hanging);
1223
1224	return 0;
1225}
1226
1227static int create_kernel_queue_cpsch(struct device_queue_manager *dqm,
1228					struct kernel_queue *kq,
1229					struct qcm_process_device *qpd)
1230{
1231	dqm_lock(dqm);
1232	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1233		pr_warn("Can't create new kernel queue because %d queues were already created\n",
1234				dqm->total_queue_count);
1235		dqm_unlock(dqm);
1236		return -EPERM;
1237	}
1238
1239	/*
1240	 * Unconditionally increment this counter, regardless of the queue's
1241	 * type or whether the queue is active.
1242	 */
1243	dqm->total_queue_count++;
1244	pr_debug("Total of %d queues are accountable so far\n",
1245			dqm->total_queue_count);
1246
1247	list_add(&kq->list, &qpd->priv_queue_list);
1248	increment_queue_count(dqm, kq->queue->properties.type);
1249	qpd->is_debug = true;
1250	execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1251	dqm_unlock(dqm);
1252
1253	return 0;
1254}
1255
1256static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm,
1257					struct kernel_queue *kq,
1258					struct qcm_process_device *qpd)
1259{
1260	dqm_lock(dqm);
1261	list_del(&kq->list);
1262	decrement_queue_count(dqm, kq->queue->properties.type);
1263	qpd->is_debug = false;
1264	execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
1265	/*
1266	 * Unconditionally decrement this counter, regardless of the queue's
1267	 * type.
1268	 */
1269	dqm->total_queue_count--;
1270	pr_debug("Total of %d queues are accountable so far\n",
1271			dqm->total_queue_count);
1272	dqm_unlock(dqm);
1273}
1274
1275static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
1276			struct qcm_process_device *qpd)
1277{
1278	int retval;
1279	struct mqd_manager *mqd_mgr;
1280
1281	if (dqm->total_queue_count >= max_num_of_queues_per_device) {
1282		pr_warn("Can't create new usermode queue because %d queues were already created\n",
1283				dqm->total_queue_count);
1284		retval = -EPERM;
1285		goto out;
1286	}
1287
1288	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1289		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1290		dqm_lock(dqm);
1291		retval = allocate_sdma_queue(dqm, q);
1292		dqm_unlock(dqm);
1293		if (retval)
1294			goto out;
1295	}
1296
1297	retval = allocate_doorbell(qpd, q);
1298	if (retval)
1299		goto out_deallocate_sdma_queue;
1300
1301	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1302			q->properties.type)];
1303
1304	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1305		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
1306		dqm->asic_ops.init_sdma_vm(dqm, q, qpd);
1307	q->properties.tba_addr = qpd->tba_addr;
1308	q->properties.tma_addr = qpd->tma_addr;
1309	q->mqd_mem_obj = mqd_mgr->allocate_mqd(mqd_mgr->dev, &q->properties);
1310	if (!q->mqd_mem_obj) {
1311		retval = -ENOMEM;
1312		goto out_deallocate_doorbell;
1313	}
1314
1315	dqm_lock(dqm);
1316	/*
1317	 * Eviction state logic: mark all queues as evicted, even ones
1318	 * not currently active. Restoring inactive queues later only
1319	 * updates the is_evicted flag but is a no-op otherwise.
1320	 */
1321	q->properties.is_evicted = !!qpd->evicted;
1322	mqd_mgr->init_mqd(mqd_mgr, &q->mqd, q->mqd_mem_obj,
1323				&q->gart_mqd_addr, &q->properties);
1324
1325	list_add(&q->list, &qpd->queues_list);
1326	qpd->queue_count++;
1327
1328	if (q->properties.is_active) {
1329		increment_queue_count(dqm, q->properties.type);
1330
1331		execute_queues_cpsch(dqm,
1332				KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1333	}
1334
 
 
 
 
1335	/*
1336	 * Unconditionally increment this counter, regardless of the queue's
1337	 * type or whether the queue is active.
1338	 */
1339	dqm->total_queue_count++;
1340
1341	pr_debug("Total of %d queues are accountable so far\n",
1342			dqm->total_queue_count);
1343
1344	dqm_unlock(dqm);
1345	return retval;
1346
1347out_deallocate_doorbell:
1348	deallocate_doorbell(qpd, q);
1349out_deallocate_sdma_queue:
1350	if (q->properties.type == KFD_QUEUE_TYPE_SDMA ||
1351		q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
1352		dqm_lock(dqm);
1353		deallocate_sdma_queue(dqm, q);
1354		dqm_unlock(dqm);
1355	}
1356out:
1357	return retval;
1358}
1359
1360int amdkfd_fence_wait_timeout(unsigned int *fence_addr,
1361				unsigned int fence_value,
1362				unsigned int timeout_ms)
1363{
1364	unsigned long end_jiffies = msecs_to_jiffies(timeout_ms) + jiffies;
1365
1366	while (*fence_addr != fence_value) {
1367		if (time_after(jiffies, end_jiffies)) {
1368			pr_err("qcm fence wait loop timeout expired\n");
1369			/* In HWS case, this is used to halt the driver thread
1370			 * in order not to mess up CP states before doing
1371			 * scandumps for FW debugging.
1372			 */
1373			while (halt_if_hws_hang)
1374				schedule();
1375
1376			return -ETIME;
1377		}
1378		schedule();
1379	}
1380
1381	return 0;
1382}
1383
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1384/* dqm->lock mutex has to be locked before calling this function */
1385static int map_queues_cpsch(struct device_queue_manager *dqm)
1386{
1387	int retval;
1388
1389	if (!dqm->sched_running)
1390		return 0;
1391	if (dqm->active_queue_count <= 0 || dqm->processes_count <= 0)
1392		return 0;
 
1393	if (dqm->active_runlist)
1394		return 0;
1395
1396	retval = pm_send_runlist(&dqm->packets, &dqm->queues);
1397	pr_debug("%s sent runlist\n", __func__);
1398	if (retval) {
1399		pr_err("failed to execute runlist\n");
1400		return retval;
1401	}
1402	dqm->active_runlist = true;
1403
1404	return retval;
1405}
1406
1407/* dqm->lock mutex has to be locked before calling this function */
1408static int unmap_queues_cpsch(struct device_queue_manager *dqm,
1409				enum kfd_unmap_queues_filter filter,
1410				uint32_t filter_param)
1411{
1412	int retval = 0;
1413
1414	if (!dqm->sched_running)
1415		return 0;
1416	if (dqm->is_hws_hang)
1417		return -EIO;
1418	if (!dqm->active_runlist)
1419		return retval;
1420
 
 
 
 
 
 
1421	retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE,
1422			filter, filter_param, false, 0);
1423	if (retval)
1424		return retval;
1425
1426	*dqm->fence_addr = KFD_FENCE_INIT;
1427	pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr,
1428				KFD_FENCE_COMPLETED);
1429	/* should be timed out */
1430	retval = amdkfd_fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED,
1431				queue_preemption_timeout_ms);
1432	if (retval) {
1433		pr_err("The cp might be in an unrecoverable state due to an unsuccessful queues preemption\n");
1434		dqm->is_hws_hang = true;
1435		/* It's possible we're detecting a HWS hang in the
1436		 * middle of a GPU reset. No need to schedule another
1437		 * reset in this case.
1438		 */
1439		if (!dqm->is_resetting)
1440			schedule_work(&dqm->hw_exception_work);
1441		return retval;
1442	}
1443
1444	pm_release_ib(&dqm->packets);
1445	dqm->active_runlist = false;
1446
1447	return retval;
1448}
1449
1450/* dqm->lock mutex has to be locked before calling this function */
1451static int execute_queues_cpsch(struct device_queue_manager *dqm,
1452				enum kfd_unmap_queues_filter filter,
1453				uint32_t filter_param)
1454{
1455	int retval;
1456
1457	if (dqm->is_hws_hang)
1458		return -EIO;
1459	retval = unmap_queues_cpsch(dqm, filter, filter_param);
1460	if (retval)
 
 
 
1461		return retval;
 
1462
1463	return map_queues_cpsch(dqm);
1464}
1465
1466static int destroy_queue_cpsch(struct device_queue_manager *dqm,
1467				struct qcm_process_device *qpd,
1468				struct queue *q)
1469{
1470	int retval;
1471	struct mqd_manager *mqd_mgr;
1472	uint64_t sdma_val = 0;
1473	struct kfd_process_device *pdd = qpd_to_pdd(qpd);
1474
1475	/* Get the SDMA queue stats */
1476	if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
1477	    (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
1478		retval = read_sdma_queue_counter((uint64_t)q->properties.read_ptr,
1479							&sdma_val);
1480		if (retval)
1481			pr_err("Failed to read SDMA queue counter for queue: %d\n",
1482				q->properties.queue_id);
1483	}
1484
1485	retval = 0;
1486
1487	/* remove queue from list to prevent rescheduling after preemption */
1488	dqm_lock(dqm);
1489
1490	if (qpd->is_debug) {
1491		/*
1492		 * error, currently we do not allow to destroy a queue
1493		 * of a currently debugged process
1494		 */
1495		retval = -EBUSY;
1496		goto failed_try_destroy_debugged_queue;
1497
1498	}
1499
1500	mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1501			q->properties.type)];
1502
1503	deallocate_doorbell(qpd, q);
1504
1505	if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) ||
1506	    (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)) {
 
 
 
1507		deallocate_sdma_queue(dqm, q);
1508		pdd->sdma_past_activity_counter += sdma_val;
1509	}
1510
1511	list_del(&q->list);
1512	qpd->queue_count--;
1513	if (q->properties.is_active) {
1514		decrement_queue_count(dqm, q->properties.type);
1515		retval = execute_queues_cpsch(dqm,
1516				KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 0);
1517		if (retval == -ETIME)
1518			qpd->reset_wavefronts = true;
1519		if (q->properties.is_gws) {
1520			dqm->gws_queue_count--;
1521			qpd->mapped_gws_queue = false;
1522		}
1523	}
1524
1525	/*
1526	 * Unconditionally decrement this counter, regardless of the queue's
1527	 * type
1528	 */
1529	dqm->total_queue_count--;
1530	pr_debug("Total of %d queues are accountable so far\n",
1531			dqm->total_queue_count);
1532
1533	dqm_unlock(dqm);
1534
1535	/* Do free_mqd after dqm_unlock(dqm) to avoid circular locking */
1536	mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1537
1538	return retval;
1539
1540failed_try_destroy_debugged_queue:
1541
1542	dqm_unlock(dqm);
1543	return retval;
1544}
1545
1546/*
1547 * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to
1548 * stay in user mode.
1549 */
1550#define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL
1551/* APE1 limit is inclusive and 64K aligned. */
1552#define APE1_LIMIT_ALIGNMENT 0xFFFF
1553
1554static bool set_cache_memory_policy(struct device_queue_manager *dqm,
1555				   struct qcm_process_device *qpd,
1556				   enum cache_policy default_policy,
1557				   enum cache_policy alternate_policy,
1558				   void __user *alternate_aperture_base,
1559				   uint64_t alternate_aperture_size)
1560{
1561	bool retval = true;
1562
1563	if (!dqm->asic_ops.set_cache_memory_policy)
1564		return retval;
1565
1566	dqm_lock(dqm);
1567
1568	if (alternate_aperture_size == 0) {
1569		/* base > limit disables APE1 */
1570		qpd->sh_mem_ape1_base = 1;
1571		qpd->sh_mem_ape1_limit = 0;
1572	} else {
1573		/*
1574		 * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]},
1575		 *			SH_MEM_APE1_BASE[31:0], 0x0000 }
1576		 * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]},
1577		 *			SH_MEM_APE1_LIMIT[31:0], 0xFFFF }
1578		 * Verify that the base and size parameters can be
1579		 * represented in this format and convert them.
1580		 * Additionally restrict APE1 to user-mode addresses.
1581		 */
1582
1583		uint64_t base = (uintptr_t)alternate_aperture_base;
1584		uint64_t limit = base + alternate_aperture_size - 1;
1585
1586		if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 ||
1587		   (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) {
1588			retval = false;
1589			goto out;
1590		}
1591
1592		qpd->sh_mem_ape1_base = base >> 16;
1593		qpd->sh_mem_ape1_limit = limit >> 16;
1594	}
1595
1596	retval = dqm->asic_ops.set_cache_memory_policy(
1597			dqm,
1598			qpd,
1599			default_policy,
1600			alternate_policy,
1601			alternate_aperture_base,
1602			alternate_aperture_size);
1603
1604	if ((dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0))
1605		program_sh_mem_settings(dqm, qpd);
1606
1607	pr_debug("sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n",
1608		qpd->sh_mem_config, qpd->sh_mem_ape1_base,
1609		qpd->sh_mem_ape1_limit);
1610
1611out:
1612	dqm_unlock(dqm);
1613	return retval;
1614}
1615
1616static int set_trap_handler(struct device_queue_manager *dqm,
1617				struct qcm_process_device *qpd,
1618				uint64_t tba_addr,
1619				uint64_t tma_addr)
1620{
1621	uint64_t *tma;
1622
1623	if (dqm->dev->cwsr_enabled) {
1624		/* Jump from CWSR trap handler to user trap */
1625		tma = (uint64_t *)(qpd->cwsr_kaddr + KFD_CWSR_TMA_OFFSET);
1626		tma[0] = tba_addr;
1627		tma[1] = tma_addr;
1628	} else {
1629		qpd->tba_addr = tba_addr;
1630		qpd->tma_addr = tma_addr;
1631	}
1632
1633	return 0;
1634}
1635
1636static int process_termination_nocpsch(struct device_queue_manager *dqm,
1637		struct qcm_process_device *qpd)
1638{
1639	struct queue *q, *next;
1640	struct device_process_node *cur, *next_dpn;
1641	int retval = 0;
1642	bool found = false;
1643
1644	dqm_lock(dqm);
1645
1646	/* Clear all user mode queues */
1647	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
1648		int ret;
1649
1650		ret = destroy_queue_nocpsch_locked(dqm, qpd, q);
1651		if (ret)
1652			retval = ret;
1653	}
1654
1655	/* Unregister process */
1656	list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
1657		if (qpd == cur->qpd) {
1658			list_del(&cur->list);
1659			kfree(cur);
1660			dqm->processes_count--;
1661			found = true;
1662			break;
1663		}
1664	}
1665
1666	dqm_unlock(dqm);
1667
1668	/* Outside the DQM lock because under the DQM lock we can't do
1669	 * reclaim or take other locks that others hold while reclaiming.
1670	 */
1671	if (found)
1672		kfd_dec_compute_active(dqm->dev);
1673
1674	return retval;
1675}
1676
1677static int get_wave_state(struct device_queue_manager *dqm,
1678			  struct queue *q,
1679			  void __user *ctl_stack,
1680			  u32 *ctl_stack_used_size,
1681			  u32 *save_area_used_size)
1682{
1683	struct mqd_manager *mqd_mgr;
1684	int r;
1685
1686	dqm_lock(dqm);
1687
1688	if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE ||
1689	    q->properties.is_active || !q->device->cwsr_enabled) {
1690		r = -EINVAL;
1691		goto dqm_unlock;
1692	}
1693
1694	mqd_mgr = dqm->mqd_mgrs[KFD_MQD_TYPE_CP];
1695
1696	if (!mqd_mgr->get_wave_state) {
1697		r = -EINVAL;
1698		goto dqm_unlock;
1699	}
1700
1701	r = mqd_mgr->get_wave_state(mqd_mgr, q->mqd, ctl_stack,
1702			ctl_stack_used_size, save_area_used_size);
1703
1704dqm_unlock:
1705	dqm_unlock(dqm);
1706	return r;
1707}
1708
1709static int process_termination_cpsch(struct device_queue_manager *dqm,
1710		struct qcm_process_device *qpd)
1711{
1712	int retval;
1713	struct queue *q, *next;
1714	struct kernel_queue *kq, *kq_next;
1715	struct mqd_manager *mqd_mgr;
1716	struct device_process_node *cur, *next_dpn;
1717	enum kfd_unmap_queues_filter filter =
1718		KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES;
1719	bool found = false;
1720
1721	retval = 0;
1722
1723	dqm_lock(dqm);
1724
1725	/* Clean all kernel queues */
1726	list_for_each_entry_safe(kq, kq_next, &qpd->priv_queue_list, list) {
1727		list_del(&kq->list);
1728		decrement_queue_count(dqm, kq->queue->properties.type);
1729		qpd->is_debug = false;
1730		dqm->total_queue_count--;
1731		filter = KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES;
1732	}
1733
1734	/* Clear all user mode queues */
1735	list_for_each_entry(q, &qpd->queues_list, list) {
1736		if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
 
1737			deallocate_sdma_queue(dqm, q);
1738		else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
 
1739			deallocate_sdma_queue(dqm, q);
1740
1741		if (q->properties.is_active) {
1742			decrement_queue_count(dqm, q->properties.type);
1743			if (q->properties.is_gws) {
1744				dqm->gws_queue_count--;
1745				qpd->mapped_gws_queue = false;
1746			}
1747		}
1748
 
 
 
1749		dqm->total_queue_count--;
1750	}
1751
1752	/* Unregister process */
1753	list_for_each_entry_safe(cur, next_dpn, &dqm->queues, list) {
1754		if (qpd == cur->qpd) {
1755			list_del(&cur->list);
1756			kfree(cur);
1757			dqm->processes_count--;
1758			found = true;
1759			break;
1760		}
1761	}
1762
1763	retval = execute_queues_cpsch(dqm, filter, 0);
1764	if ((!dqm->is_hws_hang) && (retval || qpd->reset_wavefronts)) {
1765		pr_warn("Resetting wave fronts (cpsch) on dev %p\n", dqm->dev);
1766		dbgdev_wave_reset_wavefronts(dqm->dev, qpd->pqm->process);
1767		qpd->reset_wavefronts = false;
1768	}
1769
1770	dqm_unlock(dqm);
1771
1772	/* Outside the DQM lock because under the DQM lock we can't do
1773	 * reclaim or take other locks that others hold while reclaiming.
1774	 */
1775	if (found)
1776		kfd_dec_compute_active(dqm->dev);
1777
1778	/* Lastly, free mqd resources.
1779	 * Do free_mqd() after dqm_unlock to avoid circular locking.
1780	 */
1781	list_for_each_entry_safe(q, next, &qpd->queues_list, list) {
1782		mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
1783				q->properties.type)];
1784		list_del(&q->list);
1785		qpd->queue_count--;
1786		mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj);
1787	}
1788
1789	return retval;
1790}
1791
1792static int init_mqd_managers(struct device_queue_manager *dqm)
1793{
1794	int i, j;
1795	struct mqd_manager *mqd_mgr;
1796
1797	for (i = 0; i < KFD_MQD_TYPE_MAX; i++) {
1798		mqd_mgr = dqm->asic_ops.mqd_manager_init(i, dqm->dev);
1799		if (!mqd_mgr) {
1800			pr_err("mqd manager [%d] initialization failed\n", i);
1801			goto out_free;
1802		}
1803		dqm->mqd_mgrs[i] = mqd_mgr;
1804	}
1805
1806	return 0;
1807
1808out_free:
1809	for (j = 0; j < i; j++) {
1810		kfree(dqm->mqd_mgrs[j]);
1811		dqm->mqd_mgrs[j] = NULL;
1812	}
1813
1814	return -ENOMEM;
1815}
1816
1817/* Allocate one hiq mqd (HWS) and all SDMA mqd in a continuous trunk*/
1818static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm)
1819{
1820	int retval;
1821	struct kfd_dev *dev = dqm->dev;
1822	struct kfd_mem_obj *mem_obj = &dqm->hiq_sdma_mqd;
1823	uint32_t size = dqm->mqd_mgrs[KFD_MQD_TYPE_SDMA]->mqd_size *
1824		get_num_all_sdma_engines(dqm) *
1825		dev->device_info->num_sdma_queues_per_engine +
1826		dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]->mqd_size;
1827
1828	retval = amdgpu_amdkfd_alloc_gtt_mem(dev->kgd, size,
1829		&(mem_obj->gtt_mem), &(mem_obj->gpu_addr),
1830		(void *)&(mem_obj->cpu_ptr), false);
1831
1832	return retval;
1833}
1834
1835struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
1836{
1837	struct device_queue_manager *dqm;
1838
1839	pr_debug("Loading device queue manager\n");
1840
1841	dqm = kzalloc(sizeof(*dqm), GFP_KERNEL);
1842	if (!dqm)
1843		return NULL;
1844
1845	switch (dev->device_info->asic_family) {
1846	/* HWS is not available on Hawaii. */
1847	case CHIP_HAWAII:
1848	/* HWS depends on CWSR for timely dequeue. CWSR is not
1849	 * available on Tonga.
1850	 *
1851	 * FIXME: This argument also applies to Kaveri.
1852	 */
1853	case CHIP_TONGA:
1854		dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
1855		break;
1856	default:
1857		dqm->sched_policy = sched_policy;
1858		break;
1859	}
1860
1861	dqm->dev = dev;
1862	switch (dqm->sched_policy) {
1863	case KFD_SCHED_POLICY_HWS:
1864	case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION:
1865		/* initialize dqm for cp scheduling */
1866		dqm->ops.create_queue = create_queue_cpsch;
1867		dqm->ops.initialize = initialize_cpsch;
1868		dqm->ops.start = start_cpsch;
1869		dqm->ops.stop = stop_cpsch;
1870		dqm->ops.pre_reset = pre_reset;
1871		dqm->ops.destroy_queue = destroy_queue_cpsch;
1872		dqm->ops.update_queue = update_queue;
1873		dqm->ops.register_process = register_process;
1874		dqm->ops.unregister_process = unregister_process;
1875		dqm->ops.uninitialize = uninitialize;
1876		dqm->ops.create_kernel_queue = create_kernel_queue_cpsch;
1877		dqm->ops.destroy_kernel_queue = destroy_kernel_queue_cpsch;
1878		dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
1879		dqm->ops.set_trap_handler = set_trap_handler;
1880		dqm->ops.process_termination = process_termination_cpsch;
1881		dqm->ops.evict_process_queues = evict_process_queues_cpsch;
1882		dqm->ops.restore_process_queues = restore_process_queues_cpsch;
1883		dqm->ops.get_wave_state = get_wave_state;
1884		break;
1885	case KFD_SCHED_POLICY_NO_HWS:
1886		/* initialize dqm for no cp scheduling */
1887		dqm->ops.start = start_nocpsch;
1888		dqm->ops.stop = stop_nocpsch;
1889		dqm->ops.pre_reset = pre_reset;
1890		dqm->ops.create_queue = create_queue_nocpsch;
1891		dqm->ops.destroy_queue = destroy_queue_nocpsch;
1892		dqm->ops.update_queue = update_queue;
1893		dqm->ops.register_process = register_process;
1894		dqm->ops.unregister_process = unregister_process;
1895		dqm->ops.initialize = initialize_nocpsch;
1896		dqm->ops.uninitialize = uninitialize;
1897		dqm->ops.set_cache_memory_policy = set_cache_memory_policy;
1898		dqm->ops.set_trap_handler = set_trap_handler;
1899		dqm->ops.process_termination = process_termination_nocpsch;
1900		dqm->ops.evict_process_queues = evict_process_queues_nocpsch;
1901		dqm->ops.restore_process_queues =
1902			restore_process_queues_nocpsch;
1903		dqm->ops.get_wave_state = get_wave_state;
1904		break;
1905	default:
1906		pr_err("Invalid scheduling policy %d\n", dqm->sched_policy);
1907		goto out_free;
1908	}
1909
1910	switch (dev->device_info->asic_family) {
1911	case CHIP_CARRIZO:
1912		device_queue_manager_init_vi(&dqm->asic_ops);
1913		break;
1914
1915	case CHIP_KAVERI:
1916		device_queue_manager_init_cik(&dqm->asic_ops);
1917		break;
1918
1919	case CHIP_HAWAII:
1920		device_queue_manager_init_cik_hawaii(&dqm->asic_ops);
1921		break;
1922
1923	case CHIP_TONGA:
1924	case CHIP_FIJI:
1925	case CHIP_POLARIS10:
1926	case CHIP_POLARIS11:
1927	case CHIP_POLARIS12:
1928	case CHIP_VEGAM:
1929		device_queue_manager_init_vi_tonga(&dqm->asic_ops);
1930		break;
1931
1932	case CHIP_VEGA10:
1933	case CHIP_VEGA12:
1934	case CHIP_VEGA20:
1935	case CHIP_RAVEN:
1936	case CHIP_RENOIR:
1937	case CHIP_ARCTURUS:
1938		device_queue_manager_init_v9(&dqm->asic_ops);
1939		break;
1940	case CHIP_NAVI10:
1941	case CHIP_NAVI12:
1942	case CHIP_NAVI14:
1943	case CHIP_SIENNA_CICHLID:
1944	case CHIP_NAVY_FLOUNDER:
1945		device_queue_manager_init_v10_navi10(&dqm->asic_ops);
1946		break;
1947	default:
1948		WARN(1, "Unexpected ASIC family %u",
1949		     dev->device_info->asic_family);
1950		goto out_free;
1951	}
1952
1953	if (init_mqd_managers(dqm))
1954		goto out_free;
1955
1956	if (allocate_hiq_sdma_mqd(dqm)) {
1957		pr_err("Failed to allocate hiq sdma mqd trunk buffer\n");
1958		goto out_free;
1959	}
1960
1961	if (!dqm->ops.initialize(dqm))
1962		return dqm;
1963
1964out_free:
1965	kfree(dqm);
1966	return NULL;
1967}
1968
1969static void deallocate_hiq_sdma_mqd(struct kfd_dev *dev,
1970				    struct kfd_mem_obj *mqd)
1971{
1972	WARN(!mqd, "No hiq sdma mqd trunk to free");
1973
1974	amdgpu_amdkfd_free_gtt_mem(dev->kgd, mqd->gtt_mem);
1975}
1976
1977void device_queue_manager_uninit(struct device_queue_manager *dqm)
1978{
1979	dqm->ops.uninitialize(dqm);
1980	deallocate_hiq_sdma_mqd(dqm->dev, &dqm->hiq_sdma_mqd);
1981	kfree(dqm);
1982}
1983
1984int kfd_process_vm_fault(struct device_queue_manager *dqm,
1985			 unsigned int pasid)
1986{
1987	struct kfd_process_device *pdd;
1988	struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
1989	int ret = 0;
1990
1991	if (!p)
1992		return -EINVAL;
1993	pdd = kfd_get_process_device_data(dqm->dev, p);
1994	if (pdd)
1995		ret = dqm->ops.evict_process_queues(dqm, &pdd->qpd);
1996	kfd_unref_process(p);
1997
1998	return ret;
1999}
2000
2001static void kfd_process_hw_exception(struct work_struct *work)
2002{
2003	struct device_queue_manager *dqm = container_of(work,
2004			struct device_queue_manager, hw_exception_work);
2005	amdgpu_amdkfd_gpu_reset(dqm->dev->kgd);
2006}
2007
2008#if defined(CONFIG_DEBUG_FS)
2009
2010static void seq_reg_dump(struct seq_file *m,
2011			 uint32_t (*dump)[2], uint32_t n_regs)
2012{
2013	uint32_t i, count;
2014
2015	for (i = 0, count = 0; i < n_regs; i++) {
2016		if (count == 0 ||
2017		    dump[i-1][0] + sizeof(uint32_t) != dump[i][0]) {
2018			seq_printf(m, "%s    %08x: %08x",
2019				   i ? "\n" : "",
2020				   dump[i][0], dump[i][1]);
2021			count = 7;
2022		} else {
2023			seq_printf(m, " %08x", dump[i][1]);
2024			count--;
2025		}
2026	}
2027
2028	seq_puts(m, "\n");
2029}
2030
2031int dqm_debugfs_hqds(struct seq_file *m, void *data)
2032{
2033	struct device_queue_manager *dqm = data;
2034	uint32_t (*dump)[2], n_regs;
2035	int pipe, queue;
2036	int r = 0;
2037
2038	if (!dqm->sched_running) {
2039		seq_printf(m, " Device is stopped\n");
2040
2041		return 0;
2042	}
2043
2044	r = dqm->dev->kfd2kgd->hqd_dump(dqm->dev->kgd,
2045					KFD_CIK_HIQ_PIPE, KFD_CIK_HIQ_QUEUE,
2046					&dump, &n_regs);
2047	if (!r) {
2048		seq_printf(m, "  HIQ on MEC %d Pipe %d Queue %d\n",
2049			   KFD_CIK_HIQ_PIPE/get_pipes_per_mec(dqm)+1,
2050			   KFD_CIK_HIQ_PIPE%get_pipes_per_mec(dqm),
2051			   KFD_CIK_HIQ_QUEUE);
2052		seq_reg_dump(m, dump, n_regs);
2053
2054		kfree(dump);
2055	}
2056
2057	for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
2058		int pipe_offset = pipe * get_queues_per_pipe(dqm);
2059
2060		for (queue = 0; queue < get_queues_per_pipe(dqm); queue++) {
2061			if (!test_bit(pipe_offset + queue,
2062				      dqm->dev->shared_resources.cp_queue_bitmap))
2063				continue;
2064
2065			r = dqm->dev->kfd2kgd->hqd_dump(
2066				dqm->dev->kgd, pipe, queue, &dump, &n_regs);
2067			if (r)
2068				break;
2069
2070			seq_printf(m, "  CP Pipe %d, Queue %d\n",
2071				  pipe, queue);
2072			seq_reg_dump(m, dump, n_regs);
2073
2074			kfree(dump);
2075		}
2076	}
2077
2078	for (pipe = 0; pipe < get_num_all_sdma_engines(dqm); pipe++) {
2079		for (queue = 0;
2080		     queue < dqm->dev->device_info->num_sdma_queues_per_engine;
2081		     queue++) {
2082			r = dqm->dev->kfd2kgd->hqd_sdma_dump(
2083				dqm->dev->kgd, pipe, queue, &dump, &n_regs);
2084			if (r)
2085				break;
2086
2087			seq_printf(m, "  SDMA Engine %d, RLC %d\n",
2088				  pipe, queue);
2089			seq_reg_dump(m, dump, n_regs);
2090
2091			kfree(dump);
2092		}
2093	}
2094
2095	return r;
2096}
2097
2098int dqm_debugfs_execute_queues(struct device_queue_manager *dqm)
2099{
2100	int r = 0;
2101
2102	dqm_lock(dqm);
2103	dqm->active_runlist = true;
2104	r = execute_queues_cpsch(dqm, KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 0);
2105	dqm_unlock(dqm);
2106
2107	return r;
2108}
2109
2110#endif