xref: /linux/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c (revision b85d45947951d23cb22d90caecf4c1eb81342c96)
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/slab.h>
25 #include <linux/mutex.h>
26 #include "kfd_device_queue_manager.h"
27 #include "kfd_kernel_queue.h"
28 #include "kfd_priv.h"
29 #include "kfd_pm4_headers.h"
30 #include "kfd_pm4_headers_vi.h"
31 #include "kfd_pm4_opcodes.h"
32 
33 static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
34 				unsigned int buffer_size_bytes)
35 {
36 	unsigned int temp = *wptr + increment_bytes / sizeof(uint32_t);
37 
38 	BUG_ON((temp * sizeof(uint32_t)) > buffer_size_bytes);
39 	*wptr = temp;
40 }
41 
42 static unsigned int build_pm4_header(unsigned int opcode, size_t packet_size)
43 {
44 	union PM4_MES_TYPE_3_HEADER header;
45 
46 	header.u32all = 0;
47 	header.opcode = opcode;
48 	header.count = packet_size/sizeof(uint32_t) - 2;
49 	header.type = PM4_TYPE_3;
50 
51 	return header.u32all;
52 }
53 
54 static void pm_calc_rlib_size(struct packet_manager *pm,
55 				unsigned int *rlib_size,
56 				bool *over_subscription)
57 {
58 	unsigned int process_count, queue_count;
59 	unsigned int map_queue_size;
60 
61 	BUG_ON(!pm || !rlib_size || !over_subscription);
62 
63 	process_count = pm->dqm->processes_count;
64 	queue_count = pm->dqm->queue_count;
65 
66 	/* check if there is over subscription*/
67 	*over_subscription = false;
68 	if ((process_count > 1) ||
69 		queue_count > PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE) {
70 		*over_subscription = true;
71 		pr_debug("kfd: over subscribed runlist\n");
72 	}
73 
74 	map_queue_size =
75 		(pm->dqm->dev->device_info->asic_family == CHIP_CARRIZO) ?
76 		sizeof(struct pm4_mes_map_queues) :
77 		sizeof(struct pm4_map_queues);
78 	/* calculate run list ib allocation size */
79 	*rlib_size = process_count * sizeof(struct pm4_map_process) +
80 		     queue_count * map_queue_size;
81 
82 	/*
83 	 * Increase the allocation size in case we need a chained run list
84 	 * when over subscription
85 	 */
86 	if (*over_subscription)
87 		*rlib_size += sizeof(struct pm4_runlist);
88 
89 	pr_debug("kfd: runlist ib size %d\n", *rlib_size);
90 }
91 
92 static int pm_allocate_runlist_ib(struct packet_manager *pm,
93 				unsigned int **rl_buffer,
94 				uint64_t *rl_gpu_buffer,
95 				unsigned int *rl_buffer_size,
96 				bool *is_over_subscription)
97 {
98 	int retval;
99 
100 	BUG_ON(!pm);
101 	BUG_ON(pm->allocated == true);
102 	BUG_ON(is_over_subscription == NULL);
103 
104 	pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
105 
106 	retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
107 					&pm->ib_buffer_obj);
108 
109 	if (retval != 0) {
110 		pr_err("kfd: failed to allocate runlist IB\n");
111 		return retval;
112 	}
113 
114 	*(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
115 	*rl_gpu_buffer = pm->ib_buffer_obj->gpu_addr;
116 
117 	memset(*rl_buffer, 0, *rl_buffer_size);
118 	pm->allocated = true;
119 	return retval;
120 }
121 
122 static int pm_create_runlist(struct packet_manager *pm, uint32_t *buffer,
123 			uint64_t ib, size_t ib_size_in_dwords, bool chain)
124 {
125 	struct pm4_runlist *packet;
126 
127 	BUG_ON(!pm || !buffer || !ib);
128 
129 	packet = (struct pm4_runlist *)buffer;
130 
131 	memset(buffer, 0, sizeof(struct pm4_runlist));
132 	packet->header.u32all = build_pm4_header(IT_RUN_LIST,
133 						sizeof(struct pm4_runlist));
134 
135 	packet->bitfields4.ib_size = ib_size_in_dwords;
136 	packet->bitfields4.chain = chain ? 1 : 0;
137 	packet->bitfields4.offload_polling = 0;
138 	packet->bitfields4.valid = 1;
139 	packet->ordinal2 = lower_32_bits(ib);
140 	packet->bitfields3.ib_base_hi = upper_32_bits(ib);
141 
142 	return 0;
143 }
144 
145 static int pm_create_map_process(struct packet_manager *pm, uint32_t *buffer,
146 				struct qcm_process_device *qpd)
147 {
148 	struct pm4_map_process *packet;
149 	struct queue *cur;
150 	uint32_t num_queues;
151 
152 	BUG_ON(!pm || !buffer || !qpd);
153 
154 	packet = (struct pm4_map_process *)buffer;
155 
156 	pr_debug("kfd: In func %s\n", __func__);
157 
158 	memset(buffer, 0, sizeof(struct pm4_map_process));
159 
160 	packet->header.u32all = build_pm4_header(IT_MAP_PROCESS,
161 					sizeof(struct pm4_map_process));
162 	packet->bitfields2.diq_enable = (qpd->is_debug) ? 1 : 0;
163 	packet->bitfields2.process_quantum = 1;
164 	packet->bitfields2.pasid = qpd->pqm->process->pasid;
165 	packet->bitfields3.page_table_base = qpd->page_table_base;
166 	packet->bitfields10.gds_size = qpd->gds_size;
167 	packet->bitfields10.num_gws = qpd->num_gws;
168 	packet->bitfields10.num_oac = qpd->num_oac;
169 	num_queues = 0;
170 	list_for_each_entry(cur, &qpd->queues_list, list)
171 		num_queues++;
172 	packet->bitfields10.num_queues = (qpd->is_debug) ? 0 : num_queues;
173 
174 	packet->sh_mem_config = qpd->sh_mem_config;
175 	packet->sh_mem_bases = qpd->sh_mem_bases;
176 	packet->sh_mem_ape1_base = qpd->sh_mem_ape1_base;
177 	packet->sh_mem_ape1_limit = qpd->sh_mem_ape1_limit;
178 
179 	packet->gds_addr_lo = lower_32_bits(qpd->gds_context_area);
180 	packet->gds_addr_hi = upper_32_bits(qpd->gds_context_area);
181 
182 	return 0;
183 }
184 
185 static int pm_create_map_queue_vi(struct packet_manager *pm, uint32_t *buffer,
186 		struct queue *q, bool is_static)
187 {
188 	struct pm4_mes_map_queues *packet;
189 	bool use_static = is_static;
190 
191 	BUG_ON(!pm || !buffer || !q);
192 
193 	pr_debug("kfd: In func %s\n", __func__);
194 
195 	packet = (struct pm4_mes_map_queues *)buffer;
196 	memset(buffer, 0, sizeof(struct pm4_map_queues));
197 
198 	packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
199 						sizeof(struct pm4_map_queues));
200 	packet->bitfields2.alloc_format =
201 		alloc_format__mes_map_queues__one_per_pipe_vi;
202 	packet->bitfields2.num_queues = 1;
203 	packet->bitfields2.queue_sel =
204 		queue_sel__mes_map_queues__map_to_hws_determined_queue_slots_vi;
205 
206 	packet->bitfields2.engine_sel =
207 		engine_sel__mes_map_queues__compute_vi;
208 	packet->bitfields2.queue_type =
209 		queue_type__mes_map_queues__normal_compute_vi;
210 
211 	switch (q->properties.type) {
212 	case KFD_QUEUE_TYPE_COMPUTE:
213 		if (use_static)
214 			packet->bitfields2.queue_type =
215 		queue_type__mes_map_queues__normal_latency_static_queue_vi;
216 		break;
217 	case KFD_QUEUE_TYPE_DIQ:
218 		packet->bitfields2.queue_type =
219 			queue_type__mes_map_queues__debug_interface_queue_vi;
220 		break;
221 	case KFD_QUEUE_TYPE_SDMA:
222 		packet->bitfields2.engine_sel =
223 				engine_sel__mes_map_queues__sdma0_vi;
224 		use_static = false; /* no static queues under SDMA */
225 		break;
226 	default:
227 		pr_err("kfd: in %s queue type %d\n", __func__,
228 				q->properties.type);
229 		BUG();
230 		break;
231 	}
232 	packet->bitfields3.doorbell_offset =
233 			q->properties.doorbell_off;
234 
235 	packet->mqd_addr_lo =
236 			lower_32_bits(q->gart_mqd_addr);
237 
238 	packet->mqd_addr_hi =
239 			upper_32_bits(q->gart_mqd_addr);
240 
241 	packet->wptr_addr_lo =
242 			lower_32_bits((uint64_t)q->properties.write_ptr);
243 
244 	packet->wptr_addr_hi =
245 			upper_32_bits((uint64_t)q->properties.write_ptr);
246 
247 	return 0;
248 }
249 
250 static int pm_create_map_queue(struct packet_manager *pm, uint32_t *buffer,
251 				struct queue *q, bool is_static)
252 {
253 	struct pm4_map_queues *packet;
254 	bool use_static = is_static;
255 
256 	BUG_ON(!pm || !buffer || !q);
257 
258 	pr_debug("kfd: In func %s\n", __func__);
259 
260 	packet = (struct pm4_map_queues *)buffer;
261 	memset(buffer, 0, sizeof(struct pm4_map_queues));
262 
263 	packet->header.u32all = build_pm4_header(IT_MAP_QUEUES,
264 						sizeof(struct pm4_map_queues));
265 	packet->bitfields2.alloc_format =
266 				alloc_format__mes_map_queues__one_per_pipe;
267 	packet->bitfields2.num_queues = 1;
268 	packet->bitfields2.queue_sel =
269 		queue_sel__mes_map_queues__map_to_hws_determined_queue_slots;
270 
271 	packet->bitfields2.vidmem = (q->properties.is_interop) ?
272 			vidmem__mes_map_queues__uses_video_memory :
273 			vidmem__mes_map_queues__uses_no_video_memory;
274 
275 	switch (q->properties.type) {
276 	case KFD_QUEUE_TYPE_COMPUTE:
277 	case KFD_QUEUE_TYPE_DIQ:
278 		packet->bitfields2.engine_sel =
279 				engine_sel__mes_map_queues__compute;
280 		break;
281 	case KFD_QUEUE_TYPE_SDMA:
282 		packet->bitfields2.engine_sel =
283 				engine_sel__mes_map_queues__sdma0;
284 		use_static = false; /* no static queues under SDMA */
285 		break;
286 	default:
287 		BUG();
288 		break;
289 	}
290 
291 	packet->mes_map_queues_ordinals[0].bitfields3.doorbell_offset =
292 			q->properties.doorbell_off;
293 
294 	packet->mes_map_queues_ordinals[0].bitfields3.is_static =
295 			(use_static == true) ? 1 : 0;
296 
297 	packet->mes_map_queues_ordinals[0].mqd_addr_lo =
298 			lower_32_bits(q->gart_mqd_addr);
299 
300 	packet->mes_map_queues_ordinals[0].mqd_addr_hi =
301 			upper_32_bits(q->gart_mqd_addr);
302 
303 	packet->mes_map_queues_ordinals[0].wptr_addr_lo =
304 			lower_32_bits((uint64_t)q->properties.write_ptr);
305 
306 	packet->mes_map_queues_ordinals[0].wptr_addr_hi =
307 			upper_32_bits((uint64_t)q->properties.write_ptr);
308 
309 	return 0;
310 }
311 
312 static int pm_create_runlist_ib(struct packet_manager *pm,
313 				struct list_head *queues,
314 				uint64_t *rl_gpu_addr,
315 				size_t *rl_size_bytes)
316 {
317 	unsigned int alloc_size_bytes;
318 	unsigned int *rl_buffer, rl_wptr, i;
319 	int retval, proccesses_mapped;
320 	struct device_process_node *cur;
321 	struct qcm_process_device *qpd;
322 	struct queue *q;
323 	struct kernel_queue *kq;
324 	bool is_over_subscription;
325 
326 	BUG_ON(!pm || !queues || !rl_size_bytes || !rl_gpu_addr);
327 
328 	rl_wptr = retval = proccesses_mapped = 0;
329 
330 	retval = pm_allocate_runlist_ib(pm, &rl_buffer, rl_gpu_addr,
331 				&alloc_size_bytes, &is_over_subscription);
332 	if (retval != 0)
333 		return retval;
334 
335 	*rl_size_bytes = alloc_size_bytes;
336 
337 	pr_debug("kfd: In func %s\n", __func__);
338 	pr_debug("kfd: building runlist ib process count: %d queues count %d\n",
339 		pm->dqm->processes_count, pm->dqm->queue_count);
340 
341 	/* build the run list ib packet */
342 	list_for_each_entry(cur, queues, list) {
343 		qpd = cur->qpd;
344 		/* build map process packet */
345 		if (proccesses_mapped >= pm->dqm->processes_count) {
346 			pr_debug("kfd: not enough space left in runlist IB\n");
347 			pm_release_ib(pm);
348 			return -ENOMEM;
349 		}
350 
351 		retval = pm_create_map_process(pm, &rl_buffer[rl_wptr], qpd);
352 		if (retval != 0)
353 			return retval;
354 
355 		proccesses_mapped++;
356 		inc_wptr(&rl_wptr, sizeof(struct pm4_map_process),
357 				alloc_size_bytes);
358 
359 		list_for_each_entry(kq, &qpd->priv_queue_list, list) {
360 			if (kq->queue->properties.is_active != true)
361 				continue;
362 
363 			pr_debug("kfd: static_queue, mapping kernel q %d, is debug status %d\n",
364 				kq->queue->queue, qpd->is_debug);
365 
366 			if (pm->dqm->dev->device_info->asic_family ==
367 					CHIP_CARRIZO)
368 				retval = pm_create_map_queue_vi(pm,
369 						&rl_buffer[rl_wptr],
370 						kq->queue,
371 						qpd->is_debug);
372 			else
373 				retval = pm_create_map_queue(pm,
374 						&rl_buffer[rl_wptr],
375 						kq->queue,
376 						qpd->is_debug);
377 			if (retval != 0)
378 				return retval;
379 
380 			inc_wptr(&rl_wptr,
381 				sizeof(struct pm4_map_queues),
382 				alloc_size_bytes);
383 		}
384 
385 		list_for_each_entry(q, &qpd->queues_list, list) {
386 			if (q->properties.is_active != true)
387 				continue;
388 
389 			pr_debug("kfd: static_queue, mapping user queue %d, is debug status %d\n",
390 				q->queue, qpd->is_debug);
391 
392 			if (pm->dqm->dev->device_info->asic_family ==
393 					CHIP_CARRIZO)
394 				retval = pm_create_map_queue_vi(pm,
395 						&rl_buffer[rl_wptr],
396 						q,
397 						qpd->is_debug);
398 			else
399 				retval = pm_create_map_queue(pm,
400 						&rl_buffer[rl_wptr],
401 						q,
402 						qpd->is_debug);
403 
404 			if (retval != 0)
405 				return retval;
406 
407 			inc_wptr(&rl_wptr,
408 				sizeof(struct pm4_map_queues),
409 				alloc_size_bytes);
410 		}
411 	}
412 
413 	pr_debug("kfd: finished map process and queues to runlist\n");
414 
415 	if (is_over_subscription)
416 		pm_create_runlist(pm, &rl_buffer[rl_wptr], *rl_gpu_addr,
417 				alloc_size_bytes / sizeof(uint32_t), true);
418 
419 	for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
420 		pr_debug("0x%2X ", rl_buffer[i]);
421 	pr_debug("\n");
422 
423 	return 0;
424 }
425 
426 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
427 {
428 	BUG_ON(!dqm);
429 
430 	pm->dqm = dqm;
431 	mutex_init(&pm->lock);
432 	pm->priv_queue = kernel_queue_init(dqm->dev, KFD_QUEUE_TYPE_HIQ);
433 	if (pm->priv_queue == NULL) {
434 		mutex_destroy(&pm->lock);
435 		return -ENOMEM;
436 	}
437 	pm->allocated = false;
438 
439 	return 0;
440 }
441 
442 void pm_uninit(struct packet_manager *pm)
443 {
444 	BUG_ON(!pm);
445 
446 	mutex_destroy(&pm->lock);
447 	kernel_queue_uninit(pm->priv_queue);
448 }
449 
450 int pm_send_set_resources(struct packet_manager *pm,
451 				struct scheduling_resources *res)
452 {
453 	struct pm4_set_resources *packet;
454 
455 	BUG_ON(!pm || !res);
456 
457 	pr_debug("kfd: In func %s\n", __func__);
458 
459 	mutex_lock(&pm->lock);
460 	pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
461 					sizeof(*packet) / sizeof(uint32_t),
462 			(unsigned int **)&packet);
463 	if (packet == NULL) {
464 		mutex_unlock(&pm->lock);
465 		pr_err("kfd: failed to allocate buffer on kernel queue\n");
466 		return -ENOMEM;
467 	}
468 
469 	memset(packet, 0, sizeof(struct pm4_set_resources));
470 	packet->header.u32all = build_pm4_header(IT_SET_RESOURCES,
471 					sizeof(struct pm4_set_resources));
472 
473 	packet->bitfields2.queue_type =
474 			queue_type__mes_set_resources__hsa_interface_queue_hiq;
475 	packet->bitfields2.vmid_mask = res->vmid_mask;
476 	packet->bitfields2.unmap_latency = KFD_UNMAP_LATENCY;
477 	packet->bitfields7.oac_mask = res->oac_mask;
478 	packet->bitfields8.gds_heap_base = res->gds_heap_base;
479 	packet->bitfields8.gds_heap_size = res->gds_heap_size;
480 
481 	packet->gws_mask_lo = lower_32_bits(res->gws_mask);
482 	packet->gws_mask_hi = upper_32_bits(res->gws_mask);
483 
484 	packet->queue_mask_lo = lower_32_bits(res->queue_mask);
485 	packet->queue_mask_hi = upper_32_bits(res->queue_mask);
486 
487 	pm->priv_queue->ops.submit_packet(pm->priv_queue);
488 
489 	mutex_unlock(&pm->lock);
490 
491 	return 0;
492 }
493 
494 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
495 {
496 	uint64_t rl_gpu_ib_addr;
497 	uint32_t *rl_buffer;
498 	size_t rl_ib_size, packet_size_dwords;
499 	int retval;
500 
501 	BUG_ON(!pm || !dqm_queues);
502 
503 	retval = pm_create_runlist_ib(pm, dqm_queues, &rl_gpu_ib_addr,
504 					&rl_ib_size);
505 	if (retval != 0)
506 		goto fail_create_runlist_ib;
507 
508 	pr_debug("kfd: runlist IB address: 0x%llX\n", rl_gpu_ib_addr);
509 
510 	packet_size_dwords = sizeof(struct pm4_runlist) / sizeof(uint32_t);
511 	mutex_lock(&pm->lock);
512 
513 	retval = pm->priv_queue->ops.acquire_packet_buffer(pm->priv_queue,
514 					packet_size_dwords, &rl_buffer);
515 	if (retval != 0)
516 		goto fail_acquire_packet_buffer;
517 
518 	retval = pm_create_runlist(pm, rl_buffer, rl_gpu_ib_addr,
519 					rl_ib_size / sizeof(uint32_t), false);
520 	if (retval != 0)
521 		goto fail_create_runlist;
522 
523 	pm->priv_queue->ops.submit_packet(pm->priv_queue);
524 
525 	mutex_unlock(&pm->lock);
526 
527 	return retval;
528 
529 fail_create_runlist:
530 	pm->priv_queue->ops.rollback_packet(pm->priv_queue);
531 fail_acquire_packet_buffer:
532 	mutex_unlock(&pm->lock);
533 fail_create_runlist_ib:
534 	if (pm->allocated == true)
535 		pm_release_ib(pm);
536 	return retval;
537 }
538 
539 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
540 			uint32_t fence_value)
541 {
542 	int retval;
543 	struct pm4_query_status *packet;
544 
545 	BUG_ON(!pm || !fence_address);
546 
547 	mutex_lock(&pm->lock);
548 	retval = pm->priv_queue->ops.acquire_packet_buffer(
549 			pm->priv_queue,
550 			sizeof(struct pm4_query_status) / sizeof(uint32_t),
551 			(unsigned int **)&packet);
552 	if (retval != 0)
553 		goto fail_acquire_packet_buffer;
554 
555 	packet->header.u32all = build_pm4_header(IT_QUERY_STATUS,
556 					sizeof(struct pm4_query_status));
557 
558 	packet->bitfields2.context_id = 0;
559 	packet->bitfields2.interrupt_sel =
560 			interrupt_sel__mes_query_status__completion_status;
561 	packet->bitfields2.command =
562 			command__mes_query_status__fence_only_after_write_ack;
563 
564 	packet->addr_hi = upper_32_bits((uint64_t)fence_address);
565 	packet->addr_lo = lower_32_bits((uint64_t)fence_address);
566 	packet->data_hi = upper_32_bits((uint64_t)fence_value);
567 	packet->data_lo = lower_32_bits((uint64_t)fence_value);
568 
569 	pm->priv_queue->ops.submit_packet(pm->priv_queue);
570 	mutex_unlock(&pm->lock);
571 
572 	return 0;
573 
574 fail_acquire_packet_buffer:
575 	mutex_unlock(&pm->lock);
576 	return retval;
577 }
578 
579 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
580 			enum kfd_preempt_type_filter mode,
581 			uint32_t filter_param, bool reset,
582 			unsigned int sdma_engine)
583 {
584 	int retval;
585 	uint32_t *buffer;
586 	struct pm4_unmap_queues *packet;
587 
588 	BUG_ON(!pm);
589 
590 	mutex_lock(&pm->lock);
591 	retval = pm->priv_queue->ops.acquire_packet_buffer(
592 			pm->priv_queue,
593 			sizeof(struct pm4_unmap_queues) / sizeof(uint32_t),
594 			&buffer);
595 	if (retval != 0)
596 		goto err_acquire_packet_buffer;
597 
598 	packet = (struct pm4_unmap_queues *)buffer;
599 	memset(buffer, 0, sizeof(struct pm4_unmap_queues));
600 	pr_debug("kfd: static_queue: unmapping queues: mode is %d , reset is %d , type is %d\n",
601 		mode, reset, type);
602 	packet->header.u32all = build_pm4_header(IT_UNMAP_QUEUES,
603 					sizeof(struct pm4_unmap_queues));
604 	switch (type) {
605 	case KFD_QUEUE_TYPE_COMPUTE:
606 	case KFD_QUEUE_TYPE_DIQ:
607 		packet->bitfields2.engine_sel =
608 			engine_sel__mes_unmap_queues__compute;
609 		break;
610 	case KFD_QUEUE_TYPE_SDMA:
611 		packet->bitfields2.engine_sel =
612 			engine_sel__mes_unmap_queues__sdma0 + sdma_engine;
613 		break;
614 	default:
615 		BUG();
616 		break;
617 	}
618 
619 	if (reset)
620 		packet->bitfields2.action =
621 				action__mes_unmap_queues__reset_queues;
622 	else
623 		packet->bitfields2.action =
624 				action__mes_unmap_queues__preempt_queues;
625 
626 	switch (mode) {
627 	case KFD_PREEMPT_TYPE_FILTER_SINGLE_QUEUE:
628 		packet->bitfields2.queue_sel =
629 				queue_sel__mes_unmap_queues__perform_request_on_specified_queues;
630 		packet->bitfields2.num_queues = 1;
631 		packet->bitfields3b.doorbell_offset0 = filter_param;
632 		break;
633 	case KFD_PREEMPT_TYPE_FILTER_BY_PASID:
634 		packet->bitfields2.queue_sel =
635 				queue_sel__mes_unmap_queues__perform_request_on_pasid_queues;
636 		packet->bitfields3a.pasid = filter_param;
637 		break;
638 	case KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES:
639 		packet->bitfields2.queue_sel =
640 				queue_sel__mes_unmap_queues__perform_request_on_all_active_queues;
641 		break;
642 	case KFD_PREEMPT_TYPE_FILTER_DYNAMIC_QUEUES:
643 		/* in this case, we do not preempt static queues */
644 		packet->bitfields2.queue_sel =
645 				queue_sel__mes_unmap_queues__perform_request_on_dynamic_queues_only;
646 		break;
647 	default:
648 		BUG();
649 		break;
650 	};
651 
652 	pm->priv_queue->ops.submit_packet(pm->priv_queue);
653 
654 	mutex_unlock(&pm->lock);
655 	return 0;
656 
657 err_acquire_packet_buffer:
658 	mutex_unlock(&pm->lock);
659 	return retval;
660 }
661 
662 void pm_release_ib(struct packet_manager *pm)
663 {
664 	BUG_ON(!pm);
665 
666 	mutex_lock(&pm->lock);
667 	if (pm->allocated) {
668 		kfd_gtt_sa_free(pm->dqm->dev, pm->ib_buffer_obj);
669 		pm->allocated = false;
670 	}
671 	mutex_unlock(&pm->lock);
672 }
673