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
32static 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
46static 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
60static 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(addr: 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(nr: found, addr: pqm->queue_slot_bitmap);
77 *qid = found;
78
79 return 0;
80}
81
82void kfd_process_dequeue_from_device(struct kfd_process_device *pdd)
83{
84 struct kfd_node *dev = pdd->dev;
85
86 if (pdd->already_dequeued)
87 return;
88
89 dev->dqm->ops.process_termination(dev->dqm, &pdd->qpd);
90 if (dev->kfd->shared_resources.enable_mes)
91 amdgpu_mes_flush_shader_debugger(adev: dev->adev, process_context_addr: pdd->proc_ctx_gpu_addr);
92 pdd->already_dequeued = true;
93}
94
95int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
96 void *gws)
97{
98 struct mqd_update_info minfo = {0};
99 struct kfd_node *dev = NULL;
100 struct process_queue_node *pqn;
101 struct kfd_process_device *pdd;
102 struct kgd_mem *mem = NULL;
103 int ret;
104
105 pqn = get_queue_by_qid(pqm, qid);
106 if (!pqn) {
107 pr_err("Queue id does not match any known queue\n");
108 return -EINVAL;
109 }
110
111 if (pqn->q)
112 dev = pqn->q->device;
113 if (WARN_ON(!dev))
114 return -ENODEV;
115
116 pdd = kfd_get_process_device_data(dev, p: pqm->process);
117 if (!pdd) {
118 pr_err("Process device data doesn't exist\n");
119 return -EINVAL;
120 }
121
122 /* Only allow one queue per process can have GWS assigned */
123 if (gws && pdd->qpd.num_gws)
124 return -EBUSY;
125
126 if (!gws && pdd->qpd.num_gws == 0)
127 return -EINVAL;
128
129 if (KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 3) && !dev->kfd->shared_resources.enable_mes) {
130 if (gws)
131 ret = amdgpu_amdkfd_add_gws_to_process(info: pdd->process->kgd_process_info,
132 gws, mem: &mem);
133 else
134 ret = amdgpu_amdkfd_remove_gws_from_process(info: pdd->process->kgd_process_info,
135 mem: pqn->q->gws);
136 if (unlikely(ret))
137 return ret;
138 pqn->q->gws = mem;
139 } else {
140 /*
141 * Intentionally set GWS to a non-NULL value
142 * for devices that do not use GWS for global wave
143 * synchronization but require the formality
144 * of setting GWS for cooperative groups.
145 */
146 pqn->q->gws = gws ? ERR_PTR(error: -ENOMEM) : NULL;
147 }
148
149 pdd->qpd.num_gws = gws ? dev->adev->gds.gws_size : 0;
150 minfo.update_flag = gws ? UPDATE_FLAG_IS_GWS : 0;
151
152 return pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
153 pqn->q, &minfo);
154}
155
156void kfd_process_dequeue_from_all_devices(struct kfd_process *p)
157{
158 int i;
159
160 for (i = 0; i < p->n_pdds; i++)
161 kfd_process_dequeue_from_device(pdd: p->pdds[i]);
162}
163
164int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
165{
166 INIT_LIST_HEAD(list: &pqm->queues);
167 pqm->queue_slot_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
168 GFP_KERNEL);
169 if (!pqm->queue_slot_bitmap)
170 return -ENOMEM;
171 pqm->process = p;
172
173 return 0;
174}
175
176static void pqm_clean_queue_resource(struct process_queue_manager *pqm,
177 struct process_queue_node *pqn)
178{
179 struct kfd_node *dev;
180 struct kfd_process_device *pdd;
181
182 dev = pqn->q->device;
183
184 pdd = kfd_get_process_device_data(dev, p: pqm->process);
185 if (!pdd) {
186 pr_err("Process device data doesn't exist\n");
187 return;
188 }
189
190 if (pqn->q->gws) {
191 if (KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
192 !dev->kfd->shared_resources.enable_mes)
193 amdgpu_amdkfd_remove_gws_from_process(
194 info: pqm->process->kgd_process_info, mem: pqn->q->gws);
195 pdd->qpd.num_gws = 0;
196 }
197
198 if (dev->kfd->shared_resources.enable_mes) {
199 amdgpu_amdkfd_free_gtt_mem(adev: dev->adev, mem_obj: pqn->q->gang_ctx_bo);
200 if (pqn->q->wptr_bo)
201 amdgpu_amdkfd_free_gtt_mem(adev: dev->adev, mem_obj: pqn->q->wptr_bo);
202 }
203}
204
205void pqm_uninit(struct process_queue_manager *pqm)
206{
207 struct process_queue_node *pqn, *next;
208
209 list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
210 if (pqn->q)
211 pqm_clean_queue_resource(pqm, pqn);
212
213 kfd_procfs_del_queue(q: pqn->q);
214 uninit_queue(q: pqn->q);
215 list_del(entry: &pqn->process_queue_list);
216 kfree(objp: pqn);
217 }
218
219 bitmap_free(bitmap: pqm->queue_slot_bitmap);
220 pqm->queue_slot_bitmap = NULL;
221}
222
223static int init_user_queue(struct process_queue_manager *pqm,
224 struct kfd_node *dev, struct queue **q,
225 struct queue_properties *q_properties,
226 struct file *f, struct amdgpu_bo *wptr_bo,
227 unsigned int qid)
228{
229 int retval;
230
231 /* Doorbell initialized in user space*/
232 q_properties->doorbell_ptr = NULL;
233 q_properties->exception_status = KFD_EC_MASK(EC_QUEUE_NEW);
234
235 /* let DQM handle it*/
236 q_properties->vmid = 0;
237 q_properties->queue_id = qid;
238
239 retval = init_queue(q, properties: q_properties);
240 if (retval != 0)
241 return retval;
242
243 (*q)->device = dev;
244 (*q)->process = pqm->process;
245
246 if (dev->kfd->shared_resources.enable_mes) {
247 retval = amdgpu_amdkfd_alloc_gtt_mem(adev: dev->adev,
248 AMDGPU_MES_GANG_CTX_SIZE,
249 mem_obj: &(*q)->gang_ctx_bo,
250 gpu_addr: &(*q)->gang_ctx_gpu_addr,
251 cpu_ptr: &(*q)->gang_ctx_cpu_ptr,
252 mqd_gfx9: false);
253 if (retval) {
254 pr_err("failed to allocate gang context bo\n");
255 goto cleanup;
256 }
257 memset((*q)->gang_ctx_cpu_ptr, 0, AMDGPU_MES_GANG_CTX_SIZE);
258 (*q)->wptr_bo = wptr_bo;
259 }
260
261 pr_debug("PQM After init queue");
262 return 0;
263
264cleanup:
265 uninit_queue(q: *q);
266 *q = NULL;
267 return retval;
268}
269
270int pqm_create_queue(struct process_queue_manager *pqm,
271 struct kfd_node *dev,
272 struct file *f,
273 struct queue_properties *properties,
274 unsigned int *qid,
275 struct amdgpu_bo *wptr_bo,
276 const struct kfd_criu_queue_priv_data *q_data,
277 const void *restore_mqd,
278 const void *restore_ctl_stack,
279 uint32_t *p_doorbell_offset_in_process)
280{
281 int retval;
282 struct kfd_process_device *pdd;
283 struct queue *q;
284 struct process_queue_node *pqn;
285 struct kernel_queue *kq;
286 enum kfd_queue_type type = properties->type;
287 unsigned int max_queues = 127; /* HWS limit */
288
289 /*
290 * On GFX 9.4.3, increase the number of queues that
291 * can be created to 255. No HWS limit on GFX 9.4.3.
292 */
293 if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 3))
294 max_queues = 255;
295
296 q = NULL;
297 kq = NULL;
298
299 pdd = kfd_get_process_device_data(dev, p: pqm->process);
300 if (!pdd) {
301 pr_err("Process device data doesn't exist\n");
302 return -1;
303 }
304
305 /*
306 * for debug process, verify that it is within the static queues limit
307 * currently limit is set to half of the total avail HQD slots
308 * If we are just about to create DIQ, the is_debug flag is not set yet
309 * Hence we also check the type as well
310 */
311 if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ))
312 max_queues = dev->kfd->device_info.max_no_of_hqd/2;
313
314 if (pdd->qpd.queue_count >= max_queues)
315 return -ENOSPC;
316
317 if (q_data) {
318 retval = assign_queue_slot_by_qid(pqm, qid: q_data->q_id);
319 *qid = q_data->q_id;
320 } else
321 retval = find_available_queue_slot(pqm, qid);
322
323 if (retval != 0)
324 return retval;
325
326 if (list_empty(head: &pdd->qpd.queues_list) &&
327 list_empty(head: &pdd->qpd.priv_queue_list))
328 dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
329
330 pqn = kzalloc(size: sizeof(*pqn), GFP_KERNEL);
331 if (!pqn) {
332 retval = -ENOMEM;
333 goto err_allocate_pqn;
334 }
335
336 switch (type) {
337 case KFD_QUEUE_TYPE_SDMA:
338 case KFD_QUEUE_TYPE_SDMA_XGMI:
339 /* SDMA queues are always allocated statically no matter
340 * which scheduler mode is used. We also do not need to
341 * check whether a SDMA queue can be allocated here, because
342 * allocate_sdma_queue() in create_queue() has the
343 * corresponding check logic.
344 */
345 retval = init_user_queue(pqm, dev, q: &q, q_properties: properties, f, wptr_bo, qid: *qid);
346 if (retval != 0)
347 goto err_create_queue;
348 pqn->q = q;
349 pqn->kq = NULL;
350 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
351 restore_mqd, restore_ctl_stack);
352 print_queue(q);
353 break;
354
355 case KFD_QUEUE_TYPE_COMPUTE:
356 /* check if there is over subscription */
357 if ((dev->dqm->sched_policy ==
358 KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
359 ((dev->dqm->processes_count >= dev->vm_info.vmid_num_kfd) ||
360 (dev->dqm->active_queue_count >= get_cp_queues_num(dqm: dev->dqm)))) {
361 pr_debug("Over-subscription is not allowed when amdkfd.sched_policy == 1\n");
362 retval = -EPERM;
363 goto err_create_queue;
364 }
365
366 retval = init_user_queue(pqm, dev, q: &q, q_properties: properties, f, wptr_bo, qid: *qid);
367 if (retval != 0)
368 goto err_create_queue;
369 pqn->q = q;
370 pqn->kq = NULL;
371 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
372 restore_mqd, restore_ctl_stack);
373 print_queue(q);
374 break;
375 case KFD_QUEUE_TYPE_DIQ:
376 kq = kernel_queue_init(dev, type: KFD_QUEUE_TYPE_DIQ);
377 if (!kq) {
378 retval = -ENOMEM;
379 goto err_create_queue;
380 }
381 kq->queue->properties.queue_id = *qid;
382 pqn->kq = kq;
383 pqn->q = NULL;
384 retval = kfd_process_drain_interrupts(pdd);
385 if (retval)
386 break;
387
388 retval = dev->dqm->ops.create_kernel_queue(dev->dqm,
389 kq, &pdd->qpd);
390 break;
391 default:
392 WARN(1, "Invalid queue type %d", type);
393 retval = -EINVAL;
394 }
395
396 if (retval != 0) {
397 pr_err("Pasid 0x%x DQM create queue type %d failed. ret %d\n",
398 pqm->process->pasid, type, retval);
399 goto err_create_queue;
400 }
401
402 if (q && p_doorbell_offset_in_process) {
403 /* Return the doorbell offset within the doorbell page
404 * to the caller so it can be passed up to user mode
405 * (in bytes).
406 * relative doorbell index = Absolute doorbell index -
407 * absolute index of first doorbell in the page.
408 */
409 uint32_t first_db_index = amdgpu_doorbell_index_on_bar(adev: pdd->dev->adev,
410 db_bo: pdd->qpd.proc_doorbells,
411 doorbell_index: 0,
412 db_size: pdd->dev->kfd->device_info.doorbell_size);
413
414 *p_doorbell_offset_in_process = (q->properties.doorbell_off
415 - first_db_index) * sizeof(uint32_t);
416 }
417
418 pr_debug("PQM After DQM create queue\n");
419
420 list_add(new: &pqn->process_queue_list, head: &pqm->queues);
421
422 if (q) {
423 pr_debug("PQM done creating queue\n");
424 kfd_procfs_add_queue(q);
425 print_queue_properties(q: &q->properties);
426 }
427
428 return retval;
429
430err_create_queue:
431 uninit_queue(q);
432 if (kq)
433 kernel_queue_uninit(kq, hanging: false);
434 kfree(objp: pqn);
435err_allocate_pqn:
436 /* check if queues list is empty unregister process from device */
437 clear_bit(nr: *qid, addr: pqm->queue_slot_bitmap);
438 if (list_empty(head: &pdd->qpd.queues_list) &&
439 list_empty(head: &pdd->qpd.priv_queue_list))
440 dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd);
441 return retval;
442}
443
444int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
445{
446 struct process_queue_node *pqn;
447 struct kfd_process_device *pdd;
448 struct device_queue_manager *dqm;
449 struct kfd_node *dev;
450 int retval;
451
452 dqm = NULL;
453
454 retval = 0;
455
456 pqn = get_queue_by_qid(pqm, qid);
457 if (!pqn) {
458 pr_err("Queue id does not match any known queue\n");
459 return -EINVAL;
460 }
461
462 dev = NULL;
463 if (pqn->kq)
464 dev = pqn->kq->dev;
465 if (pqn->q)
466 dev = pqn->q->device;
467 if (WARN_ON(!dev))
468 return -ENODEV;
469
470 pdd = kfd_get_process_device_data(dev, p: pqm->process);
471 if (!pdd) {
472 pr_err("Process device data doesn't exist\n");
473 return -1;
474 }
475
476 if (pqn->kq) {
477 /* destroy kernel queue (DIQ) */
478 dqm = pqn->kq->dev->dqm;
479 dqm->ops.destroy_kernel_queue(dqm, pqn->kq, &pdd->qpd);
480 kernel_queue_uninit(kq: pqn->kq, hanging: false);
481 }
482
483 if (pqn->q) {
484 kfd_procfs_del_queue(q: pqn->q);
485 dqm = pqn->q->device->dqm;
486 retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q);
487 if (retval) {
488 pr_err("Pasid 0x%x destroy queue %d failed, ret %d\n",
489 pqm->process->pasid,
490 pqn->q->properties.queue_id, retval);
491 if (retval != -ETIME)
492 goto err_destroy_queue;
493 }
494
495 pqm_clean_queue_resource(pqm, pqn);
496 uninit_queue(q: pqn->q);
497 }
498
499 list_del(entry: &pqn->process_queue_list);
500 kfree(objp: pqn);
501 clear_bit(nr: qid, addr: pqm->queue_slot_bitmap);
502
503 if (list_empty(head: &pdd->qpd.queues_list) &&
504 list_empty(head: &pdd->qpd.priv_queue_list))
505 dqm->ops.unregister_process(dqm, &pdd->qpd);
506
507err_destroy_queue:
508 return retval;
509}
510
511int pqm_update_queue_properties(struct process_queue_manager *pqm,
512 unsigned int qid, struct queue_properties *p)
513{
514 int retval;
515 struct process_queue_node *pqn;
516
517 pqn = get_queue_by_qid(pqm, qid);
518 if (!pqn) {
519 pr_debug("No queue %d exists for update operation\n", qid);
520 return -EFAULT;
521 }
522
523 pqn->q->properties.queue_address = p->queue_address;
524 pqn->q->properties.queue_size = p->queue_size;
525 pqn->q->properties.queue_percent = p->queue_percent;
526 pqn->q->properties.priority = p->priority;
527 pqn->q->properties.pm4_target_xcc = p->pm4_target_xcc;
528
529 retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
530 pqn->q, NULL);
531 if (retval != 0)
532 return retval;
533
534 return 0;
535}
536
537int pqm_update_mqd(struct process_queue_manager *pqm,
538 unsigned int qid, struct mqd_update_info *minfo)
539{
540 int retval;
541 struct process_queue_node *pqn;
542
543 pqn = get_queue_by_qid(pqm, qid);
544 if (!pqn) {
545 pr_debug("No queue %d exists for update operation\n", qid);
546 return -EFAULT;
547 }
548
549 /* CUs are masked for debugger requirements so deny user mask */
550 if (pqn->q->properties.is_dbg_wa && minfo && minfo->cu_mask.ptr)
551 return -EBUSY;
552
553 /* ASICs that have WGPs must enforce pairwise enabled mask checks. */
554 if (minfo && minfo->cu_mask.ptr &&
555 KFD_GC_VERSION(pqn->q->device) >= IP_VERSION(10, 0, 0)) {
556 int i;
557
558 for (i = 0; i < minfo->cu_mask.count; i += 2) {
559 uint32_t cu_pair = (minfo->cu_mask.ptr[i / 32] >> (i % 32)) & 0x3;
560
561 if (cu_pair && cu_pair != 0x3) {
562 pr_debug("CUs must be adjacent pairwise enabled.\n");
563 return -EINVAL;
564 }
565 }
566 }
567
568 retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
569 pqn->q, minfo);
570 if (retval != 0)
571 return retval;
572
573 if (minfo && minfo->cu_mask.ptr)
574 pqn->q->properties.is_user_cu_masked = true;
575
576 return 0;
577}
578
579struct kernel_queue *pqm_get_kernel_queue(
580 struct process_queue_manager *pqm,
581 unsigned int qid)
582{
583 struct process_queue_node *pqn;
584
585 pqn = get_queue_by_qid(pqm, qid);
586 if (pqn && pqn->kq)
587 return pqn->kq;
588
589 return NULL;
590}
591
592struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
593 unsigned int qid)
594{
595 struct process_queue_node *pqn;
596
597 pqn = get_queue_by_qid(pqm, qid);
598 return pqn ? pqn->q : NULL;
599}
600
601int pqm_get_wave_state(struct process_queue_manager *pqm,
602 unsigned int qid,
603 void __user *ctl_stack,
604 u32 *ctl_stack_used_size,
605 u32 *save_area_used_size)
606{
607 struct process_queue_node *pqn;
608
609 pqn = get_queue_by_qid(pqm, qid);
610 if (!pqn) {
611 pr_debug("amdkfd: No queue %d exists for operation\n",
612 qid);
613 return -EFAULT;
614 }
615
616 return pqn->q->device->dqm->ops.get_wave_state(pqn->q->device->dqm,
617 pqn->q,
618 ctl_stack,
619 ctl_stack_used_size,
620 save_area_used_size);
621}
622
623int pqm_get_queue_snapshot(struct process_queue_manager *pqm,
624 uint64_t exception_clear_mask,
625 void __user *buf,
626 int *num_qss_entries,
627 uint32_t *entry_size)
628{
629 struct process_queue_node *pqn;
630 struct kfd_queue_snapshot_entry src;
631 uint32_t tmp_entry_size = *entry_size, tmp_qss_entries = *num_qss_entries;
632 int r = 0;
633
634 *num_qss_entries = 0;
635 if (!(*entry_size))
636 return -EINVAL;
637
638 *entry_size = min_t(size_t, *entry_size, sizeof(struct kfd_queue_snapshot_entry));
639 mutex_lock(&pqm->process->event_mutex);
640
641 memset(&src, 0, sizeof(src));
642
643 list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
644 if (!pqn->q)
645 continue;
646
647 if (*num_qss_entries < tmp_qss_entries) {
648 set_queue_snapshot_entry(q: pqn->q, exception_clear_mask, qss_entry: &src);
649
650 if (copy_to_user(to: buf, from: &src, n: *entry_size)) {
651 r = -EFAULT;
652 break;
653 }
654 buf += tmp_entry_size;
655 }
656 *num_qss_entries += 1;
657 }
658
659 mutex_unlock(lock: &pqm->process->event_mutex);
660 return r;
661}
662
663static int get_queue_data_sizes(struct kfd_process_device *pdd,
664 struct queue *q,
665 uint32_t *mqd_size,
666 uint32_t *ctl_stack_size)
667{
668 int ret;
669
670 ret = pqm_get_queue_checkpoint_info(pqm: &pdd->process->pqm,
671 qid: q->properties.queue_id,
672 mqd_size,
673 ctl_stack_size);
674 if (ret)
675 pr_err("Failed to get queue dump info (%d)\n", ret);
676
677 return ret;
678}
679
680int kfd_process_get_queue_info(struct kfd_process *p,
681 uint32_t *num_queues,
682 uint64_t *priv_data_sizes)
683{
684 uint32_t extra_data_sizes = 0;
685 struct queue *q;
686 int i;
687 int ret;
688
689 *num_queues = 0;
690
691 /* Run over all PDDs of the process */
692 for (i = 0; i < p->n_pdds; i++) {
693 struct kfd_process_device *pdd = p->pdds[i];
694
695 list_for_each_entry(q, &pdd->qpd.queues_list, list) {
696 if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
697 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
698 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
699 uint32_t mqd_size, ctl_stack_size;
700
701 *num_queues = *num_queues + 1;
702
703 ret = get_queue_data_sizes(pdd, q, mqd_size: &mqd_size, ctl_stack_size: &ctl_stack_size);
704 if (ret)
705 return ret;
706
707 extra_data_sizes += mqd_size + ctl_stack_size;
708 } else {
709 pr_err("Unsupported queue type (%d)\n", q->properties.type);
710 return -EOPNOTSUPP;
711 }
712 }
713 }
714 *priv_data_sizes = extra_data_sizes +
715 (*num_queues * sizeof(struct kfd_criu_queue_priv_data));
716
717 return 0;
718}
719
720static int pqm_checkpoint_mqd(struct process_queue_manager *pqm,
721 unsigned int qid,
722 void *mqd,
723 void *ctl_stack)
724{
725 struct process_queue_node *pqn;
726
727 pqn = get_queue_by_qid(pqm, qid);
728 if (!pqn) {
729 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
730 return -EFAULT;
731 }
732
733 if (!pqn->q->device->dqm->ops.checkpoint_mqd) {
734 pr_err("amdkfd: queue dumping not supported on this device\n");
735 return -EOPNOTSUPP;
736 }
737
738 return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm,
739 pqn->q, mqd, ctl_stack);
740}
741
742static int criu_checkpoint_queue(struct kfd_process_device *pdd,
743 struct queue *q,
744 struct kfd_criu_queue_priv_data *q_data)
745{
746 uint8_t *mqd, *ctl_stack;
747 int ret;
748
749 mqd = (void *)(q_data + 1);
750 ctl_stack = mqd + q_data->mqd_size;
751
752 q_data->gpu_id = pdd->user_gpu_id;
753 q_data->type = q->properties.type;
754 q_data->format = q->properties.format;
755 q_data->q_id = q->properties.queue_id;
756 q_data->q_address = q->properties.queue_address;
757 q_data->q_size = q->properties.queue_size;
758 q_data->priority = q->properties.priority;
759 q_data->q_percent = q->properties.queue_percent;
760 q_data->read_ptr_addr = (uint64_t)q->properties.read_ptr;
761 q_data->write_ptr_addr = (uint64_t)q->properties.write_ptr;
762 q_data->doorbell_id = q->doorbell_id;
763
764 q_data->sdma_id = q->sdma_id;
765
766 q_data->eop_ring_buffer_address =
767 q->properties.eop_ring_buffer_address;
768
769 q_data->eop_ring_buffer_size = q->properties.eop_ring_buffer_size;
770
771 q_data->ctx_save_restore_area_address =
772 q->properties.ctx_save_restore_area_address;
773
774 q_data->ctx_save_restore_area_size =
775 q->properties.ctx_save_restore_area_size;
776
777 q_data->gws = !!q->gws;
778
779 ret = pqm_checkpoint_mqd(pqm: &pdd->process->pqm, qid: q->properties.queue_id, mqd, ctl_stack);
780 if (ret) {
781 pr_err("Failed checkpoint queue_mqd (%d)\n", ret);
782 return ret;
783 }
784
785 pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id);
786 return ret;
787}
788
789static int criu_checkpoint_queues_device(struct kfd_process_device *pdd,
790 uint8_t __user *user_priv,
791 unsigned int *q_index,
792 uint64_t *queues_priv_data_offset)
793{
794 unsigned int q_private_data_size = 0;
795 uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */
796 struct queue *q;
797 int ret = 0;
798
799 list_for_each_entry(q, &pdd->qpd.queues_list, list) {
800 struct kfd_criu_queue_priv_data *q_data;
801 uint64_t q_data_size;
802 uint32_t mqd_size;
803 uint32_t ctl_stack_size;
804
805 if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE &&
806 q->properties.type != KFD_QUEUE_TYPE_SDMA &&
807 q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) {
808
809 pr_err("Unsupported queue type (%d)\n", q->properties.type);
810 ret = -EOPNOTSUPP;
811 break;
812 }
813
814 ret = get_queue_data_sizes(pdd, q, mqd_size: &mqd_size, ctl_stack_size: &ctl_stack_size);
815 if (ret)
816 break;
817
818 q_data_size = sizeof(*q_data) + mqd_size + ctl_stack_size;
819
820 /* Increase local buffer space if needed */
821 if (q_private_data_size < q_data_size) {
822 kfree(objp: q_private_data);
823
824 q_private_data = kzalloc(size: q_data_size, GFP_KERNEL);
825 if (!q_private_data) {
826 ret = -ENOMEM;
827 break;
828 }
829 q_private_data_size = q_data_size;
830 }
831
832 q_data = (struct kfd_criu_queue_priv_data *)q_private_data;
833
834 /* data stored in this order: priv_data, mqd, ctl_stack */
835 q_data->mqd_size = mqd_size;
836 q_data->ctl_stack_size = ctl_stack_size;
837
838 ret = criu_checkpoint_queue(pdd, q, q_data);
839 if (ret)
840 break;
841
842 q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE;
843
844 ret = copy_to_user(to: user_priv + *queues_priv_data_offset,
845 from: q_data, n: q_data_size);
846 if (ret) {
847 ret = -EFAULT;
848 break;
849 }
850 *queues_priv_data_offset += q_data_size;
851 *q_index = *q_index + 1;
852 }
853
854 kfree(objp: q_private_data);
855
856 return ret;
857}
858
859int kfd_criu_checkpoint_queues(struct kfd_process *p,
860 uint8_t __user *user_priv_data,
861 uint64_t *priv_data_offset)
862{
863 int ret = 0, pdd_index, q_index = 0;
864
865 for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) {
866 struct kfd_process_device *pdd = p->pdds[pdd_index];
867
868 /*
869 * criu_checkpoint_queues_device will copy data to user and update q_index and
870 * queues_priv_data_offset
871 */
872 ret = criu_checkpoint_queues_device(pdd, user_priv: user_priv_data, q_index: &q_index,
873 queues_priv_data_offset: priv_data_offset);
874
875 if (ret)
876 break;
877 }
878
879 return ret;
880}
881
882static void set_queue_properties_from_criu(struct queue_properties *qp,
883 struct kfd_criu_queue_priv_data *q_data)
884{
885 qp->is_interop = false;
886 qp->queue_percent = q_data->q_percent;
887 qp->priority = q_data->priority;
888 qp->queue_address = q_data->q_address;
889 qp->queue_size = q_data->q_size;
890 qp->read_ptr = (uint32_t *) q_data->read_ptr_addr;
891 qp->write_ptr = (uint32_t *) q_data->write_ptr_addr;
892 qp->eop_ring_buffer_address = q_data->eop_ring_buffer_address;
893 qp->eop_ring_buffer_size = q_data->eop_ring_buffer_size;
894 qp->ctx_save_restore_area_address = q_data->ctx_save_restore_area_address;
895 qp->ctx_save_restore_area_size = q_data->ctx_save_restore_area_size;
896 qp->ctl_stack_size = q_data->ctl_stack_size;
897 qp->type = q_data->type;
898 qp->format = q_data->format;
899}
900
901int kfd_criu_restore_queue(struct kfd_process *p,
902 uint8_t __user *user_priv_ptr,
903 uint64_t *priv_data_offset,
904 uint64_t max_priv_data_size)
905{
906 uint8_t *mqd, *ctl_stack, *q_extra_data = NULL;
907 struct kfd_criu_queue_priv_data *q_data;
908 struct kfd_process_device *pdd;
909 uint64_t q_extra_data_size;
910 struct queue_properties qp;
911 unsigned int queue_id;
912 int ret = 0;
913
914 if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size)
915 return -EINVAL;
916
917 q_data = kmalloc(size: sizeof(*q_data), GFP_KERNEL);
918 if (!q_data)
919 return -ENOMEM;
920
921 ret = copy_from_user(to: q_data, from: user_priv_ptr + *priv_data_offset, n: sizeof(*q_data));
922 if (ret) {
923 ret = -EFAULT;
924 goto exit;
925 }
926
927 *priv_data_offset += sizeof(*q_data);
928 q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size;
929
930 if (*priv_data_offset + q_extra_data_size > max_priv_data_size) {
931 ret = -EINVAL;
932 goto exit;
933 }
934
935 q_extra_data = kmalloc(size: q_extra_data_size, GFP_KERNEL);
936 if (!q_extra_data) {
937 ret = -ENOMEM;
938 goto exit;
939 }
940
941 ret = copy_from_user(to: q_extra_data, from: user_priv_ptr + *priv_data_offset, n: q_extra_data_size);
942 if (ret) {
943 ret = -EFAULT;
944 goto exit;
945 }
946
947 *priv_data_offset += q_extra_data_size;
948
949 pdd = kfd_process_device_data_by_id(process: p, gpu_id: q_data->gpu_id);
950 if (!pdd) {
951 pr_err("Failed to get pdd\n");
952 ret = -EINVAL;
953 goto exit;
954 }
955
956 /* data stored in this order: mqd, ctl_stack */
957 mqd = q_extra_data;
958 ctl_stack = mqd + q_data->mqd_size;
959
960 memset(&qp, 0, sizeof(qp));
961 set_queue_properties_from_criu(qp: &qp, q_data);
962
963 print_queue_properties(q: &qp);
964
965 ret = pqm_create_queue(pqm: &p->pqm, dev: pdd->dev, NULL, properties: &qp, qid: &queue_id, NULL, q_data, restore_mqd: mqd, restore_ctl_stack: ctl_stack,
966 NULL);
967 if (ret) {
968 pr_err("Failed to create new queue err:%d\n", ret);
969 goto exit;
970 }
971
972 if (q_data->gws)
973 ret = pqm_set_gws(pqm: &p->pqm, qid: q_data->q_id, gws: pdd->dev->gws);
974
975exit:
976 if (ret)
977 pr_err("Failed to restore queue (%d)\n", ret);
978 else
979 pr_debug("Queue id %d was restored successfully\n", queue_id);
980
981 kfree(objp: q_data);
982
983 return ret;
984}
985
986int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
987 unsigned int qid,
988 uint32_t *mqd_size,
989 uint32_t *ctl_stack_size)
990{
991 struct process_queue_node *pqn;
992
993 pqn = get_queue_by_qid(pqm, qid);
994 if (!pqn) {
995 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
996 return -EFAULT;
997 }
998
999 if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) {
1000 pr_err("amdkfd: queue dumping not supported on this device\n");
1001 return -EOPNOTSUPP;
1002 }
1003
1004 pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm,
1005 pqn->q, mqd_size,
1006 ctl_stack_size);
1007 return 0;
1008}
1009
1010#if defined(CONFIG_DEBUG_FS)
1011
1012int pqm_debugfs_mqds(struct seq_file *m, void *data)
1013{
1014 struct process_queue_manager *pqm = data;
1015 struct process_queue_node *pqn;
1016 struct queue *q;
1017 enum KFD_MQD_TYPE mqd_type;
1018 struct mqd_manager *mqd_mgr;
1019 int r = 0, xcc, num_xccs = 1;
1020 void *mqd;
1021 uint64_t size = 0;
1022
1023 list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
1024 if (pqn->q) {
1025 q = pqn->q;
1026 switch (q->properties.type) {
1027 case KFD_QUEUE_TYPE_SDMA:
1028 case KFD_QUEUE_TYPE_SDMA_XGMI:
1029 seq_printf(m, fmt: " SDMA queue on device %x\n",
1030 q->device->id);
1031 mqd_type = KFD_MQD_TYPE_SDMA;
1032 break;
1033 case KFD_QUEUE_TYPE_COMPUTE:
1034 seq_printf(m, fmt: " Compute queue on device %x\n",
1035 q->device->id);
1036 mqd_type = KFD_MQD_TYPE_CP;
1037 num_xccs = NUM_XCC(q->device->xcc_mask);
1038 break;
1039 default:
1040 seq_printf(m,
1041 fmt: " Bad user queue type %d on device %x\n",
1042 q->properties.type, q->device->id);
1043 continue;
1044 }
1045 mqd_mgr = q->device->dqm->mqd_mgrs[mqd_type];
1046 size = mqd_mgr->mqd_stride(mqd_mgr,
1047 &q->properties);
1048 } else if (pqn->kq) {
1049 q = pqn->kq->queue;
1050 mqd_mgr = pqn->kq->mqd_mgr;
1051 switch (q->properties.type) {
1052 case KFD_QUEUE_TYPE_DIQ:
1053 seq_printf(m, fmt: " DIQ on device %x\n",
1054 pqn->kq->dev->id);
1055 break;
1056 default:
1057 seq_printf(m,
1058 fmt: " Bad kernel queue type %d on device %x\n",
1059 q->properties.type,
1060 pqn->kq->dev->id);
1061 continue;
1062 }
1063 } else {
1064 seq_printf(m,
1065 fmt: " Weird: Queue node with neither kernel nor user queue\n");
1066 continue;
1067 }
1068
1069 for (xcc = 0; xcc < num_xccs; xcc++) {
1070 mqd = q->mqd + size * xcc;
1071 r = mqd_mgr->debugfs_show_mqd(m, mqd);
1072 if (r != 0)
1073 break;
1074 }
1075 }
1076
1077 return r;
1078}
1079
1080#endif
1081

source code of linux/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c