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Merge tag 'cxl-for-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
[linux.git] / drivers / gpu / drm / amd / amdkfd / kfd_process_queue_manager.c
1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /*
3  * Copyright 2014-2022 Advanced Micro Devices, Inc.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21  * OTHER DEALINGS IN THE SOFTWARE.
22  *
23  */
24
25 #include <linux/slab.h>
26 #include <linux/list.h>
27 #include "kfd_device_queue_manager.h"
28 #include "kfd_priv.h"
29 #include "kfd_kernel_queue.h"
30 #include "amdgpu_amdkfd.h"
31
32 static inline struct process_queue_node *get_queue_by_qid(
33                         struct process_queue_manager *pqm, unsigned int qid)
34 {
35         struct process_queue_node *pqn;
36
37         list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
38                 if ((pqn->q && pqn->q->properties.queue_id == qid) ||
39                     (pqn->kq && pqn->kq->queue->properties.queue_id == qid))
40                         return pqn;
41         }
42
43         return NULL;
44 }
45
46 static int assign_queue_slot_by_qid(struct process_queue_manager *pqm,
47                                     unsigned int qid)
48 {
49         if (qid >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
50                 return -EINVAL;
51
52         if (__test_and_set_bit(qid, pqm->queue_slot_bitmap)) {
53                 pr_err("Cannot create new queue because requested qid(%u) is in use\n", qid);
54                 return -ENOSPC;
55         }
56
57         return 0;
58 }
59
60 static int find_available_queue_slot(struct process_queue_manager *pqm,
61                                         unsigned int *qid)
62 {
63         unsigned long found;
64
65         found = find_first_zero_bit(pqm->queue_slot_bitmap,
66                         KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
67
68         pr_debug("The new slot id %lu\n", found);
69
70         if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
71                 pr_info("Cannot open more queues for process with pasid 0x%x\n",
72                                 pqm->process->pasid);
73                 return -ENOMEM;
74         }
75
76         set_bit(found, pqm->queue_slot_bitmap);
77         *qid = found;
78
79         return 0;
80 }
81
82 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd)
83 {
84         struct kfd_dev *dev = pdd->dev;
85
86         if (pdd->already_dequeued)
87                 return;
88
89         dev->dqm->ops.process_termination(dev->dqm, &pdd->qpd);
90         pdd->already_dequeued = true;
91 }
92
93 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
94                         void *gws)
95 {
96         struct kfd_dev *dev = NULL;
97         struct process_queue_node *pqn;
98         struct kfd_process_device *pdd;
99         struct kgd_mem *mem = NULL;
100         int ret;
101
102         pqn = get_queue_by_qid(pqm, qid);
103         if (!pqn) {
104                 pr_err("Queue id does not match any known queue\n");
105                 return -EINVAL;
106         }
107
108         if (pqn->q)
109                 dev = pqn->q->device;
110         if (WARN_ON(!dev))
111                 return -ENODEV;
112
113         pdd = kfd_get_process_device_data(dev, pqm->process);
114         if (!pdd) {
115                 pr_err("Process device data doesn't exist\n");
116                 return -EINVAL;
117         }
118
119         /* Only allow one queue per process can have GWS assigned */
120         if (gws && pdd->qpd.num_gws)
121                 return -EBUSY;
122
123         if (!gws && pdd->qpd.num_gws == 0)
124                 return -EINVAL;
125
126         if (gws)
127                 ret = amdgpu_amdkfd_add_gws_to_process(pdd->process->kgd_process_info,
128                         gws, &mem);
129         else
130                 ret = amdgpu_amdkfd_remove_gws_from_process(pdd->process->kgd_process_info,
131                         pqn->q->gws);
132         if (unlikely(ret))
133                 return ret;
134
135         pqn->q->gws = mem;
136         pdd->qpd.num_gws = gws ? dev->adev->gds.gws_size : 0;
137
138         return pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
139                                                         pqn->q, NULL);
140 }
141
142 void kfd_process_dequeue_from_all_devices(struct kfd_process *p)
143 {
144         int i;
145
146         for (i = 0; i < p->n_pdds; i++)
147                 kfd_process_dequeue_from_device(p->pdds[i]);
148 }
149
150 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
151 {
152         INIT_LIST_HEAD(&pqm->queues);
153         pqm->queue_slot_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
154                                                GFP_KERNEL);
155         if (!pqm->queue_slot_bitmap)
156                 return -ENOMEM;
157         pqm->process = p;
158
159         return 0;
160 }
161
162 void pqm_uninit(struct process_queue_manager *pqm)
163 {
164         struct process_queue_node *pqn, *next;
165
166         list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
167                 if (pqn->q && pqn->q->gws)
168                         amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info,
169                                 pqn->q->gws);
170                 kfd_procfs_del_queue(pqn->q);
171                 uninit_queue(pqn->q);
172                 list_del(&pqn->process_queue_list);
173                 kfree(pqn);
174         }
175
176         bitmap_free(pqm->queue_slot_bitmap);
177         pqm->queue_slot_bitmap = NULL;
178 }
179
180 static int init_user_queue(struct process_queue_manager *pqm,
181                                 struct kfd_dev *dev, struct queue **q,
182                                 struct queue_properties *q_properties,
183                                 struct file *f, struct amdgpu_bo *wptr_bo,
184                                 unsigned int qid)
185 {
186         int retval;
187
188         /* Doorbell initialized in user space*/
189         q_properties->doorbell_ptr = NULL;
190
191         /* let DQM handle it*/
192         q_properties->vmid = 0;
193         q_properties->queue_id = qid;
194
195         retval = init_queue(q, q_properties);
196         if (retval != 0)
197                 return retval;
198
199         (*q)->device = dev;
200         (*q)->process = pqm->process;
201
202         if (dev->shared_resources.enable_mes) {
203                 retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev,
204                                                 AMDGPU_MES_GANG_CTX_SIZE,
205                                                 &(*q)->gang_ctx_bo,
206                                                 &(*q)->gang_ctx_gpu_addr,
207                                                 &(*q)->gang_ctx_cpu_ptr,
208                                                 false);
209                 if (retval) {
210                         pr_err("failed to allocate gang context bo\n");
211                         goto cleanup;
212                 }
213                 memset((*q)->gang_ctx_cpu_ptr, 0, AMDGPU_MES_GANG_CTX_SIZE);
214                 (*q)->wptr_bo = wptr_bo;
215         }
216
217         pr_debug("PQM After init queue");
218         return 0;
219
220 cleanup:
221         if (dev->shared_resources.enable_mes)
222                 uninit_queue(*q);
223         return retval;
224 }
225
226 int pqm_create_queue(struct process_queue_manager *pqm,
227                             struct kfd_dev *dev,
228                             struct file *f,
229                             struct queue_properties *properties,
230                             unsigned int *qid,
231                             struct amdgpu_bo *wptr_bo,
232                             const struct kfd_criu_queue_priv_data *q_data,
233                             const void *restore_mqd,
234                             const void *restore_ctl_stack,
235                             uint32_t *p_doorbell_offset_in_process)
236 {
237         int retval;
238         struct kfd_process_device *pdd;
239         struct queue *q;
240         struct process_queue_node *pqn;
241         struct kernel_queue *kq;
242         enum kfd_queue_type type = properties->type;
243         unsigned int max_queues = 127; /* HWS limit */
244
245         q = NULL;
246         kq = NULL;
247
248         pdd = kfd_get_process_device_data(dev, pqm->process);
249         if (!pdd) {
250                 pr_err("Process device data doesn't exist\n");
251                 return -1;
252         }
253
254         /*
255          * for debug process, verify that it is within the static queues limit
256          * currently limit is set to half of the total avail HQD slots
257          * If we are just about to create DIQ, the is_debug flag is not set yet
258          * Hence we also check the type as well
259          */
260         if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ))
261                 max_queues = dev->device_info.max_no_of_hqd/2;
262
263         if (pdd->qpd.queue_count >= max_queues)
264                 return -ENOSPC;
265
266         if (q_data) {
267                 retval = assign_queue_slot_by_qid(pqm, q_data->q_id);
268                 *qid = q_data->q_id;
269         } else
270                 retval = find_available_queue_slot(pqm, qid);
271
272         if (retval != 0)
273                 return retval;
274
275         if (list_empty(&pdd->qpd.queues_list) &&
276             list_empty(&pdd->qpd.priv_queue_list))
277                 dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
278
279         pqn = kzalloc(sizeof(*pqn), GFP_KERNEL);
280         if (!pqn) {
281                 retval = -ENOMEM;
282                 goto err_allocate_pqn;
283         }
284
285         switch (type) {
286         case KFD_QUEUE_TYPE_SDMA:
287         case KFD_QUEUE_TYPE_SDMA_XGMI:
288                 /* SDMA queues are always allocated statically no matter
289                  * which scheduler mode is used. We also do not need to
290                  * check whether a SDMA queue can be allocated here, because
291                  * allocate_sdma_queue() in create_queue() has the
292                  * corresponding check logic.
293                  */
294                 retval = init_user_queue(pqm, dev, &q, properties, f, wptr_bo, *qid);
295                 if (retval != 0)
296                         goto err_create_queue;
297                 pqn->q = q;
298                 pqn->kq = NULL;
299                 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
300                                                     restore_mqd, restore_ctl_stack);
301                 print_queue(q);
302                 break;
303
304         case KFD_QUEUE_TYPE_COMPUTE:
305                 /* check if there is over subscription */
306                 if ((dev->dqm->sched_policy ==
307                      KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
308                 ((dev->dqm->processes_count >= dev->vm_info.vmid_num_kfd) ||
309                 (dev->dqm->active_queue_count >= get_cp_queues_num(dev->dqm)))) {
310                         pr_debug("Over-subscription is not allowed when amdkfd.sched_policy == 1\n");
311                         retval = -EPERM;
312                         goto err_create_queue;
313                 }
314
315                 retval = init_user_queue(pqm, dev, &q, properties, f, wptr_bo, *qid);
316                 if (retval != 0)
317                         goto err_create_queue;
318                 pqn->q = q;
319                 pqn->kq = NULL;
320                 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
321                                                     restore_mqd, restore_ctl_stack);
322                 print_queue(q);
323                 break;
324         case KFD_QUEUE_TYPE_DIQ:
325                 kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_DIQ);
326                 if (!kq) {
327                         retval = -ENOMEM;
328                         goto err_create_queue;
329                 }
330                 kq->queue->properties.queue_id = *qid;
331                 pqn->kq = kq;
332                 pqn->q = NULL;
333                 retval = dev->dqm->ops.create_kernel_queue(dev->dqm,
334                                                         kq, &pdd->qpd);
335                 break;
336         default:
337                 WARN(1, "Invalid queue type %d", type);
338                 retval = -EINVAL;
339         }
340
341         if (retval != 0) {
342                 pr_err("Pasid 0x%x DQM create queue type %d failed. ret %d\n",
343                         pqm->process->pasid, type, retval);
344                 goto err_create_queue;
345         }
346
347         if (q && p_doorbell_offset_in_process)
348                 /* Return the doorbell offset within the doorbell page
349                  * to the caller so it can be passed up to user mode
350                  * (in bytes).
351                  * There are always 1024 doorbells per process, so in case
352                  * of 8-byte doorbells, there are two doorbell pages per
353                  * process.
354                  */
355                 *p_doorbell_offset_in_process =
356                         (q->properties.doorbell_off * sizeof(uint32_t)) &
357                         (kfd_doorbell_process_slice(dev) - 1);
358
359         pr_debug("PQM After DQM create queue\n");
360
361         list_add(&pqn->process_queue_list, &pqm->queues);
362
363         if (q) {
364                 pr_debug("PQM done creating queue\n");
365                 kfd_procfs_add_queue(q);
366                 print_queue_properties(&q->properties);
367         }
368
369         return retval;
370
371 err_create_queue:
372         uninit_queue(q);
373         if (kq)
374                 kernel_queue_uninit(kq, false);
375         kfree(pqn);
376 err_allocate_pqn:
377         /* check if queues list is empty unregister process from device */
378         clear_bit(*qid, pqm->queue_slot_bitmap);
379         if (list_empty(&pdd->qpd.queues_list) &&
380             list_empty(&pdd->qpd.priv_queue_list))
381                 dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd);
382         return retval;
383 }
384
385 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
386 {
387         struct process_queue_node *pqn;
388         struct kfd_process_device *pdd;
389         struct device_queue_manager *dqm;
390         struct kfd_dev *dev;
391         int retval;
392
393         dqm = NULL;
394
395         retval = 0;
396
397         pqn = get_queue_by_qid(pqm, qid);
398         if (!pqn) {
399                 pr_err("Queue id does not match any known queue\n");
400                 return -EINVAL;
401         }
402
403         dev = NULL;
404         if (pqn->kq)
405                 dev = pqn->kq->dev;
406         if (pqn->q)
407                 dev = pqn->q->device;
408         if (WARN_ON(!dev))
409                 return -ENODEV;
410
411         pdd = kfd_get_process_device_data(dev, pqm->process);
412         if (!pdd) {
413                 pr_err("Process device data doesn't exist\n");
414                 return -1;
415         }
416
417         if (pqn->kq) {
418                 /* destroy kernel queue (DIQ) */
419                 dqm = pqn->kq->dev->dqm;
420                 dqm->ops.destroy_kernel_queue(dqm, pqn->kq, &pdd->qpd);
421                 kernel_queue_uninit(pqn->kq, false);
422         }
423
424         if (pqn->q) {
425                 kfd_procfs_del_queue(pqn->q);
426                 dqm = pqn->q->device->dqm;
427                 retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q);
428                 if (retval) {
429                         pr_err("Pasid 0x%x destroy queue %d failed, ret %d\n",
430                                 pqm->process->pasid,
431                                 pqn->q->properties.queue_id, retval);
432                         if (retval != -ETIME)
433                                 goto err_destroy_queue;
434                 }
435
436                 if (pqn->q->gws) {
437                         amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info,
438                                 pqn->q->gws);
439                         pdd->qpd.num_gws = 0;
440                 }
441
442                 if (dev->shared_resources.enable_mes) {
443                         amdgpu_amdkfd_free_gtt_mem(dev->adev,
444                                                    pqn->q->gang_ctx_bo);
445                         if (pqn->q->wptr_bo)
446                                 amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->wptr_bo);
447
448                 }
449                 uninit_queue(pqn->q);
450         }
451
452         list_del(&pqn->process_queue_list);
453         kfree(pqn);
454         clear_bit(qid, pqm->queue_slot_bitmap);
455
456         if (list_empty(&pdd->qpd.queues_list) &&
457             list_empty(&pdd->qpd.priv_queue_list))
458                 dqm->ops.unregister_process(dqm, &pdd->qpd);
459
460 err_destroy_queue:
461         return retval;
462 }
463
464 int pqm_update_queue_properties(struct process_queue_manager *pqm,
465                                 unsigned int qid, struct queue_properties *p)
466 {
467         int retval;
468         struct process_queue_node *pqn;
469
470         pqn = get_queue_by_qid(pqm, qid);
471         if (!pqn) {
472                 pr_debug("No queue %d exists for update operation\n", qid);
473                 return -EFAULT;
474         }
475
476         pqn->q->properties.queue_address = p->queue_address;
477         pqn->q->properties.queue_size = p->queue_size;
478         pqn->q->properties.queue_percent = p->queue_percent;
479         pqn->q->properties.priority = p->priority;
480
481         retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
482                                                         pqn->q, NULL);
483         if (retval != 0)
484                 return retval;
485
486         return 0;
487 }
488
489 int pqm_update_mqd(struct process_queue_manager *pqm,
490                                 unsigned int qid, struct mqd_update_info *minfo)
491 {
492         int retval;
493         struct process_queue_node *pqn;
494
495         pqn = get_queue_by_qid(pqm, qid);
496         if (!pqn) {
497                 pr_debug("No queue %d exists for update operation\n", qid);
498                 return -EFAULT;
499         }
500
501         /* ASICs that have WGPs must enforce pairwise enabled mask checks. */
502         if (minfo && minfo->update_flag == UPDATE_FLAG_CU_MASK && minfo->cu_mask.ptr &&
503                         KFD_GC_VERSION(pqn->q->device) >= IP_VERSION(10, 0, 0)) {
504                 int i;
505
506                 for (i = 0; i < minfo->cu_mask.count; i += 2) {
507                         uint32_t cu_pair = (minfo->cu_mask.ptr[i / 32] >> (i % 32)) & 0x3;
508
509                         if (cu_pair && cu_pair != 0x3) {
510                                 pr_debug("CUs must be adjacent pairwise enabled.\n");
511                                 return -EINVAL;
512                         }
513                 }
514         }
515
516         retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
517                                                         pqn->q, minfo);
518         if (retval != 0)
519                 return retval;
520
521         return 0;
522 }
523
524 struct kernel_queue *pqm_get_kernel_queue(
525                                         struct process_queue_manager *pqm,
526                                         unsigned int qid)
527 {
528         struct process_queue_node *pqn;
529
530         pqn = get_queue_by_qid(pqm, qid);
531         if (pqn && pqn->kq)
532                 return pqn->kq;
533
534         return NULL;
535 }
536
537 struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
538                                         unsigned int qid)
539 {
540         struct process_queue_node *pqn;
541
542         pqn = get_queue_by_qid(pqm, qid);
543         return pqn ? pqn->q : NULL;
544 }
545
546 int pqm_get_wave_state(struct process_queue_manager *pqm,
547                        unsigned int qid,
548                        void __user *ctl_stack,
549                        u32 *ctl_stack_used_size,
550                        u32 *save_area_used_size)
551 {
552         struct process_queue_node *pqn;
553
554         pqn = get_queue_by_qid(pqm, qid);
555         if (!pqn) {
556                 pr_debug("amdkfd: No queue %d exists for operation\n",
557                          qid);
558                 return -EFAULT;
559         }
560
561         return pqn->q->device->dqm->ops.get_wave_state(pqn->q->device->dqm,
562                                                        pqn->q,
563                                                        ctl_stack,
564                                                        ctl_stack_used_size,
565                                                        save_area_used_size);
566 }
567
568 static int get_queue_data_sizes(struct kfd_process_device *pdd,
569                                 struct queue *q,
570                                 uint32_t *mqd_size,
571                                 uint32_t *ctl_stack_size)
572 {
573         int ret;
574
575         ret = pqm_get_queue_checkpoint_info(&pdd->process->pqm,
576                                             q->properties.queue_id,
577                                             mqd_size,
578                                             ctl_stack_size);
579         if (ret)
580                 pr_err("Failed to get queue dump info (%d)\n", ret);
581
582         return ret;
583 }
584
585 int kfd_process_get_queue_info(struct kfd_process *p,
586                                uint32_t *num_queues,
587                                uint64_t *priv_data_sizes)
588 {
589         uint32_t extra_data_sizes = 0;
590         struct queue *q;
591         int i;
592         int ret;
593
594         *num_queues = 0;
595
596         /* Run over all PDDs of the process */
597         for (i = 0; i < p->n_pdds; i++) {
598                 struct kfd_process_device *pdd = p->pdds[i];
599
600                 list_for_each_entry(q, &pdd->qpd.queues_list, list) {
601                         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
602                                 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
603                                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
604                                 uint32_t mqd_size, ctl_stack_size;
605
606                                 *num_queues = *num_queues + 1;
607
608                                 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
609                                 if (ret)
610                                         return ret;
611
612                                 extra_data_sizes += mqd_size + ctl_stack_size;
613                         } else {
614                                 pr_err("Unsupported queue type (%d)\n", q->properties.type);
615                                 return -EOPNOTSUPP;
616                         }
617                 }
618         }
619         *priv_data_sizes = extra_data_sizes +
620                                 (*num_queues * sizeof(struct kfd_criu_queue_priv_data));
621
622         return 0;
623 }
624
625 static int pqm_checkpoint_mqd(struct process_queue_manager *pqm,
626                               unsigned int qid,
627                               void *mqd,
628                               void *ctl_stack)
629 {
630         struct process_queue_node *pqn;
631
632         pqn = get_queue_by_qid(pqm, qid);
633         if (!pqn) {
634                 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
635                 return -EFAULT;
636         }
637
638         if (!pqn->q->device->dqm->ops.checkpoint_mqd) {
639                 pr_err("amdkfd: queue dumping not supported on this device\n");
640                 return -EOPNOTSUPP;
641         }
642
643         return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm,
644                                                        pqn->q, mqd, ctl_stack);
645 }
646
647 static int criu_checkpoint_queue(struct kfd_process_device *pdd,
648                            struct queue *q,
649                            struct kfd_criu_queue_priv_data *q_data)
650 {
651         uint8_t *mqd, *ctl_stack;
652         int ret;
653
654         mqd = (void *)(q_data + 1);
655         ctl_stack = mqd + q_data->mqd_size;
656
657         q_data->gpu_id = pdd->user_gpu_id;
658         q_data->type = q->properties.type;
659         q_data->format = q->properties.format;
660         q_data->q_id =  q->properties.queue_id;
661         q_data->q_address = q->properties.queue_address;
662         q_data->q_size = q->properties.queue_size;
663         q_data->priority = q->properties.priority;
664         q_data->q_percent = q->properties.queue_percent;
665         q_data->read_ptr_addr = (uint64_t)q->properties.read_ptr;
666         q_data->write_ptr_addr = (uint64_t)q->properties.write_ptr;
667         q_data->doorbell_id = q->doorbell_id;
668
669         q_data->sdma_id = q->sdma_id;
670
671         q_data->eop_ring_buffer_address =
672                 q->properties.eop_ring_buffer_address;
673
674         q_data->eop_ring_buffer_size = q->properties.eop_ring_buffer_size;
675
676         q_data->ctx_save_restore_area_address =
677                 q->properties.ctx_save_restore_area_address;
678
679         q_data->ctx_save_restore_area_size =
680                 q->properties.ctx_save_restore_area_size;
681
682         q_data->gws = !!q->gws;
683
684         ret = pqm_checkpoint_mqd(&pdd->process->pqm, q->properties.queue_id, mqd, ctl_stack);
685         if (ret) {
686                 pr_err("Failed checkpoint queue_mqd (%d)\n", ret);
687                 return ret;
688         }
689
690         pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id);
691         return ret;
692 }
693
694 static int criu_checkpoint_queues_device(struct kfd_process_device *pdd,
695                                    uint8_t __user *user_priv,
696                                    unsigned int *q_index,
697                                    uint64_t *queues_priv_data_offset)
698 {
699         unsigned int q_private_data_size = 0;
700         uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */
701         struct queue *q;
702         int ret = 0;
703
704         list_for_each_entry(q, &pdd->qpd.queues_list, list) {
705                 struct kfd_criu_queue_priv_data *q_data;
706                 uint64_t q_data_size;
707                 uint32_t mqd_size;
708                 uint32_t ctl_stack_size;
709
710                 if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE &&
711                         q->properties.type != KFD_QUEUE_TYPE_SDMA &&
712                         q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) {
713
714                         pr_err("Unsupported queue type (%d)\n", q->properties.type);
715                         ret = -EOPNOTSUPP;
716                         break;
717                 }
718
719                 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
720                 if (ret)
721                         break;
722
723                 q_data_size = sizeof(*q_data) + mqd_size + ctl_stack_size;
724
725                 /* Increase local buffer space if needed */
726                 if (q_private_data_size < q_data_size) {
727                         kfree(q_private_data);
728
729                         q_private_data = kzalloc(q_data_size, GFP_KERNEL);
730                         if (!q_private_data) {
731                                 ret = -ENOMEM;
732                                 break;
733                         }
734                         q_private_data_size = q_data_size;
735                 }
736
737                 q_data = (struct kfd_criu_queue_priv_data *)q_private_data;
738
739                 /* data stored in this order: priv_data, mqd, ctl_stack */
740                 q_data->mqd_size = mqd_size;
741                 q_data->ctl_stack_size = ctl_stack_size;
742
743                 ret = criu_checkpoint_queue(pdd, q, q_data);
744                 if (ret)
745                         break;
746
747                 q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE;
748
749                 ret = copy_to_user(user_priv + *queues_priv_data_offset,
750                                 q_data, q_data_size);
751                 if (ret) {
752                         ret = -EFAULT;
753                         break;
754                 }
755                 *queues_priv_data_offset += q_data_size;
756                 *q_index = *q_index + 1;
757         }
758
759         kfree(q_private_data);
760
761         return ret;
762 }
763
764 int kfd_criu_checkpoint_queues(struct kfd_process *p,
765                          uint8_t __user *user_priv_data,
766                          uint64_t *priv_data_offset)
767 {
768         int ret = 0, pdd_index, q_index = 0;
769
770         for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) {
771                 struct kfd_process_device *pdd = p->pdds[pdd_index];
772
773                 /*
774                  * criu_checkpoint_queues_device will copy data to user and update q_index and
775                  * queues_priv_data_offset
776                  */
777                 ret = criu_checkpoint_queues_device(pdd, user_priv_data, &q_index,
778                                               priv_data_offset);
779
780                 if (ret)
781                         break;
782         }
783
784         return ret;
785 }
786
787 static void set_queue_properties_from_criu(struct queue_properties *qp,
788                                           struct kfd_criu_queue_priv_data *q_data)
789 {
790         qp->is_interop = false;
791         qp->queue_percent = q_data->q_percent;
792         qp->priority = q_data->priority;
793         qp->queue_address = q_data->q_address;
794         qp->queue_size = q_data->q_size;
795         qp->read_ptr = (uint32_t *) q_data->read_ptr_addr;
796         qp->write_ptr = (uint32_t *) q_data->write_ptr_addr;
797         qp->eop_ring_buffer_address = q_data->eop_ring_buffer_address;
798         qp->eop_ring_buffer_size = q_data->eop_ring_buffer_size;
799         qp->ctx_save_restore_area_address = q_data->ctx_save_restore_area_address;
800         qp->ctx_save_restore_area_size = q_data->ctx_save_restore_area_size;
801         qp->ctl_stack_size = q_data->ctl_stack_size;
802         qp->type = q_data->type;
803         qp->format = q_data->format;
804 }
805
806 int kfd_criu_restore_queue(struct kfd_process *p,
807                            uint8_t __user *user_priv_ptr,
808                            uint64_t *priv_data_offset,
809                            uint64_t max_priv_data_size)
810 {
811         uint8_t *mqd, *ctl_stack, *q_extra_data = NULL;
812         struct kfd_criu_queue_priv_data *q_data;
813         struct kfd_process_device *pdd;
814         uint64_t q_extra_data_size;
815         struct queue_properties qp;
816         unsigned int queue_id;
817         int ret = 0;
818
819         if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size)
820                 return -EINVAL;
821
822         q_data = kmalloc(sizeof(*q_data), GFP_KERNEL);
823         if (!q_data)
824                 return -ENOMEM;
825
826         ret = copy_from_user(q_data, user_priv_ptr + *priv_data_offset, sizeof(*q_data));
827         if (ret) {
828                 ret = -EFAULT;
829                 goto exit;
830         }
831
832         *priv_data_offset += sizeof(*q_data);
833         q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size;
834
835         if (*priv_data_offset + q_extra_data_size > max_priv_data_size) {
836                 ret = -EINVAL;
837                 goto exit;
838         }
839
840         q_extra_data = kmalloc(q_extra_data_size, GFP_KERNEL);
841         if (!q_extra_data) {
842                 ret = -ENOMEM;
843                 goto exit;
844         }
845
846         ret = copy_from_user(q_extra_data, user_priv_ptr + *priv_data_offset, q_extra_data_size);
847         if (ret) {
848                 ret = -EFAULT;
849                 goto exit;
850         }
851
852         *priv_data_offset += q_extra_data_size;
853
854         pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
855         if (!pdd) {
856                 pr_err("Failed to get pdd\n");
857                 ret = -EINVAL;
858                 goto exit;
859         }
860         /* data stored in this order: mqd, ctl_stack */
861         mqd = q_extra_data;
862         ctl_stack = mqd + q_data->mqd_size;
863
864         memset(&qp, 0, sizeof(qp));
865         set_queue_properties_from_criu(&qp, q_data);
866
867         print_queue_properties(&qp);
868
869         ret = pqm_create_queue(&p->pqm, pdd->dev, NULL, &qp, &queue_id, NULL, q_data, mqd, ctl_stack,
870                                 NULL);
871         if (ret) {
872                 pr_err("Failed to create new queue err:%d\n", ret);
873                 goto exit;
874         }
875
876         if (q_data->gws)
877                 ret = pqm_set_gws(&p->pqm, q_data->q_id, pdd->dev->gws);
878
879 exit:
880         if (ret)
881                 pr_err("Failed to restore queue (%d)\n", ret);
882         else
883                 pr_debug("Queue id %d was restored successfully\n", queue_id);
884
885         kfree(q_data);
886
887         return ret;
888 }
889
890 int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
891                                   unsigned int qid,
892                                   uint32_t *mqd_size,
893                                   uint32_t *ctl_stack_size)
894 {
895         struct process_queue_node *pqn;
896
897         pqn = get_queue_by_qid(pqm, qid);
898         if (!pqn) {
899                 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
900                 return -EFAULT;
901         }
902
903         if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) {
904                 pr_err("amdkfd: queue dumping not supported on this device\n");
905                 return -EOPNOTSUPP;
906         }
907
908         pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm,
909                                                        pqn->q, mqd_size,
910                                                        ctl_stack_size);
911         return 0;
912 }
913
914 #if defined(CONFIG_DEBUG_FS)
915
916 int pqm_debugfs_mqds(struct seq_file *m, void *data)
917 {
918         struct process_queue_manager *pqm = data;
919         struct process_queue_node *pqn;
920         struct queue *q;
921         enum KFD_MQD_TYPE mqd_type;
922         struct mqd_manager *mqd_mgr;
923         int r = 0;
924
925         list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
926                 if (pqn->q) {
927                         q = pqn->q;
928                         switch (q->properties.type) {
929                         case KFD_QUEUE_TYPE_SDMA:
930                         case KFD_QUEUE_TYPE_SDMA_XGMI:
931                                 seq_printf(m, "  SDMA queue on device %x\n",
932                                            q->device->id);
933                                 mqd_type = KFD_MQD_TYPE_SDMA;
934                                 break;
935                         case KFD_QUEUE_TYPE_COMPUTE:
936                                 seq_printf(m, "  Compute queue on device %x\n",
937                                            q->device->id);
938                                 mqd_type = KFD_MQD_TYPE_CP;
939                                 break;
940                         default:
941                                 seq_printf(m,
942                                 "  Bad user queue type %d on device %x\n",
943                                            q->properties.type, q->device->id);
944                                 continue;
945                         }
946                         mqd_mgr = q->device->dqm->mqd_mgrs[mqd_type];
947                 } else if (pqn->kq) {
948                         q = pqn->kq->queue;
949                         mqd_mgr = pqn->kq->mqd_mgr;
950                         switch (q->properties.type) {
951                         case KFD_QUEUE_TYPE_DIQ:
952                                 seq_printf(m, "  DIQ on device %x\n",
953                                            pqn->kq->dev->id);
954                                 break;
955                         default:
956                                 seq_printf(m,
957                                 "  Bad kernel queue type %d on device %x\n",
958                                            q->properties.type,
959                                            pqn->kq->dev->id);
960                                 continue;
961                         }
962                 } else {
963                         seq_printf(m,
964                 "  Weird: Queue node with neither kernel nor user queue\n");
965                         continue;
966                 }
967
968                 r = mqd_mgr->debugfs_show_mqd(m, q->mqd);
969                 if (r != 0)
970                         break;
971         }
972
973         return r;
974 }
975
976 #endif
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