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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 #include "amdgpu_reset.h"
32
33 static inline struct process_queue_node *get_queue_by_qid(
34                         struct process_queue_manager *pqm, unsigned int qid)
35 {
36         struct process_queue_node *pqn;
37
38         list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
39                 if ((pqn->q && pqn->q->properties.queue_id == qid) ||
40                     (pqn->kq && pqn->kq->queue->properties.queue_id == qid))
41                         return pqn;
42         }
43
44         return NULL;
45 }
46
47 static int assign_queue_slot_by_qid(struct process_queue_manager *pqm,
48                                     unsigned int qid)
49 {
50         if (qid >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
51                 return -EINVAL;
52
53         if (__test_and_set_bit(qid, pqm->queue_slot_bitmap)) {
54                 pr_err("Cannot create new queue because requested qid(%u) is in use\n", qid);
55                 return -ENOSPC;
56         }
57
58         return 0;
59 }
60
61 static int find_available_queue_slot(struct process_queue_manager *pqm,
62                                         unsigned int *qid)
63 {
64         unsigned long found;
65
66         found = find_first_zero_bit(pqm->queue_slot_bitmap,
67                         KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
68
69         pr_debug("The new slot id %lu\n", found);
70
71         if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
72                 pr_info("Cannot open more queues for process with pasid 0x%x\n",
73                                 pqm->process->pasid);
74                 return -ENOMEM;
75         }
76
77         set_bit(found, pqm->queue_slot_bitmap);
78         *qid = found;
79
80         return 0;
81 }
82
83 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd)
84 {
85         struct kfd_node *dev = pdd->dev;
86
87         if (pdd->already_dequeued)
88                 return;
89
90         dev->dqm->ops.process_termination(dev->dqm, &pdd->qpd);
91         if (dev->kfd->shared_resources.enable_mes &&
92             down_read_trylock(&dev->adev->reset_domain->sem)) {
93                 amdgpu_mes_flush_shader_debugger(dev->adev,
94                                                  pdd->proc_ctx_gpu_addr);
95                 up_read(&dev->adev->reset_domain->sem);
96         }
97         pdd->already_dequeued = true;
98 }
99
100 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
101                         void *gws)
102 {
103         struct mqd_update_info minfo = {0};
104         struct kfd_node *dev = NULL;
105         struct process_queue_node *pqn;
106         struct kfd_process_device *pdd;
107         struct kgd_mem *mem = NULL;
108         int ret;
109
110         pqn = get_queue_by_qid(pqm, qid);
111         if (!pqn) {
112                 pr_err("Queue id does not match any known queue\n");
113                 return -EINVAL;
114         }
115
116         if (pqn->q)
117                 dev = pqn->q->device;
118         if (WARN_ON(!dev))
119                 return -ENODEV;
120
121         pdd = kfd_get_process_device_data(dev, pqm->process);
122         if (!pdd) {
123                 pr_err("Process device data doesn't exist\n");
124                 return -EINVAL;
125         }
126
127         /* Only allow one queue per process can have GWS assigned */
128         if (gws && pdd->qpd.num_gws)
129                 return -EBUSY;
130
131         if (!gws && pdd->qpd.num_gws == 0)
132                 return -EINVAL;
133
134         if (KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 3) &&
135             KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 4) &&
136             !dev->kfd->shared_resources.enable_mes) {
137                 if (gws)
138                         ret = amdgpu_amdkfd_add_gws_to_process(pdd->process->kgd_process_info,
139                                 gws, &mem);
140                 else
141                         ret = amdgpu_amdkfd_remove_gws_from_process(pdd->process->kgd_process_info,
142                                 pqn->q->gws);
143                 if (unlikely(ret))
144                         return ret;
145                 pqn->q->gws = mem;
146         } else {
147                 /*
148                  * Intentionally set GWS to a non-NULL value
149                  * for devices that do not use GWS for global wave
150                  * synchronization but require the formality
151                  * of setting GWS for cooperative groups.
152                  */
153                 pqn->q->gws = gws ? ERR_PTR(-ENOMEM) : NULL;
154         }
155
156         pdd->qpd.num_gws = gws ? dev->adev->gds.gws_size : 0;
157         minfo.update_flag = gws ? UPDATE_FLAG_IS_GWS : 0;
158
159         return pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
160                                                         pqn->q, &minfo);
161 }
162
163 void kfd_process_dequeue_from_all_devices(struct kfd_process *p)
164 {
165         int i;
166
167         for (i = 0; i < p->n_pdds; i++)
168                 kfd_process_dequeue_from_device(p->pdds[i]);
169 }
170
171 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
172 {
173         INIT_LIST_HEAD(&pqm->queues);
174         pqm->queue_slot_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
175                                                GFP_KERNEL);
176         if (!pqm->queue_slot_bitmap)
177                 return -ENOMEM;
178         pqm->process = p;
179
180         return 0;
181 }
182
183 static void pqm_clean_queue_resource(struct process_queue_manager *pqm,
184                                      struct process_queue_node *pqn)
185 {
186         struct kfd_node *dev;
187         struct kfd_process_device *pdd;
188
189         dev = pqn->q->device;
190
191         pdd = kfd_get_process_device_data(dev, pqm->process);
192         if (!pdd) {
193                 pr_err("Process device data doesn't exist\n");
194                 return;
195         }
196
197         if (pqn->q->gws) {
198                 if (KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
199                     KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 4) &&
200                     !dev->kfd->shared_resources.enable_mes)
201                         amdgpu_amdkfd_remove_gws_from_process(
202                                 pqm->process->kgd_process_info, pqn->q->gws);
203                 pdd->qpd.num_gws = 0;
204         }
205
206         if (dev->kfd->shared_resources.enable_mes) {
207                 amdgpu_amdkfd_free_gtt_mem(dev->adev, &pqn->q->gang_ctx_bo);
208                 amdgpu_amdkfd_free_gtt_mem(dev->adev, (void **)&pqn->q->wptr_bo_gart);
209         }
210 }
211
212 void pqm_uninit(struct process_queue_manager *pqm)
213 {
214         struct process_queue_node *pqn, *next;
215         struct kfd_process_device *pdd;
216
217         list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
218                 if (pqn->q) {
219                         pdd = kfd_get_process_device_data(pqn->q->device, pqm->process);
220                         kfd_queue_unref_bo_vas(pdd, &pqn->q->properties);
221                         kfd_queue_release_buffers(pdd, &pqn->q->properties);
222                         pqm_clean_queue_resource(pqm, pqn);
223                 }
224
225                 kfd_procfs_del_queue(pqn->q);
226                 uninit_queue(pqn->q);
227                 list_del(&pqn->process_queue_list);
228                 kfree(pqn);
229         }
230
231         bitmap_free(pqm->queue_slot_bitmap);
232         pqm->queue_slot_bitmap = NULL;
233 }
234
235 static int init_user_queue(struct process_queue_manager *pqm,
236                                 struct kfd_node *dev, struct queue **q,
237                                 struct queue_properties *q_properties,
238                                 struct file *f, unsigned int qid)
239 {
240         int retval;
241
242         /* Doorbell initialized in user space*/
243         q_properties->doorbell_ptr = NULL;
244         q_properties->exception_status = KFD_EC_MASK(EC_QUEUE_NEW);
245
246         /* let DQM handle it*/
247         q_properties->vmid = 0;
248         q_properties->queue_id = qid;
249
250         retval = init_queue(q, q_properties);
251         if (retval != 0)
252                 return retval;
253
254         (*q)->device = dev;
255         (*q)->process = pqm->process;
256
257         if (dev->kfd->shared_resources.enable_mes) {
258                 retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev,
259                                                 AMDGPU_MES_GANG_CTX_SIZE,
260                                                 &(*q)->gang_ctx_bo,
261                                                 &(*q)->gang_ctx_gpu_addr,
262                                                 &(*q)->gang_ctx_cpu_ptr,
263                                                 false);
264                 if (retval) {
265                         pr_err("failed to allocate gang context bo\n");
266                         goto cleanup;
267                 }
268                 memset((*q)->gang_ctx_cpu_ptr, 0, AMDGPU_MES_GANG_CTX_SIZE);
269
270                 /* Starting with GFX11, wptr BOs must be mapped to GART for MES to determine work
271                  * on unmapped queues for usermode queue oversubscription (no aggregated doorbell)
272                  */
273                 if (((dev->adev->mes.sched_version & AMDGPU_MES_API_VERSION_MASK)
274                     >> AMDGPU_MES_API_VERSION_SHIFT) >= 2) {
275                         if (dev->adev != amdgpu_ttm_adev(q_properties->wptr_bo->tbo.bdev)) {
276                                 pr_err("Queue memory allocated to wrong device\n");
277                                 retval = -EINVAL;
278                                 goto free_gang_ctx_bo;
279                         }
280
281                         retval = amdgpu_amdkfd_map_gtt_bo_to_gart(q_properties->wptr_bo,
282                                                                   &(*q)->wptr_bo_gart);
283                         if (retval) {
284                                 pr_err("Failed to map wptr bo to GART\n");
285                                 goto free_gang_ctx_bo;
286                         }
287                 }
288         }
289
290         pr_debug("PQM After init queue");
291         return 0;
292
293 free_gang_ctx_bo:
294         amdgpu_amdkfd_free_gtt_mem(dev->adev, (*q)->gang_ctx_bo);
295 cleanup:
296         uninit_queue(*q);
297         *q = NULL;
298         return retval;
299 }
300
301 int pqm_create_queue(struct process_queue_manager *pqm,
302                             struct kfd_node *dev,
303                             struct file *f,
304                             struct queue_properties *properties,
305                             unsigned int *qid,
306                             const struct kfd_criu_queue_priv_data *q_data,
307                             const void *restore_mqd,
308                             const void *restore_ctl_stack,
309                             uint32_t *p_doorbell_offset_in_process)
310 {
311         int retval;
312         struct kfd_process_device *pdd;
313         struct queue *q;
314         struct process_queue_node *pqn;
315         struct kernel_queue *kq;
316         enum kfd_queue_type type = properties->type;
317         unsigned int max_queues = 127; /* HWS limit */
318
319         /*
320          * On GFX 9.4.3, increase the number of queues that
321          * can be created to 255. No HWS limit on GFX 9.4.3.
322          */
323         if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 3) ||
324             KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 4))
325                 max_queues = 255;
326
327         q = NULL;
328         kq = NULL;
329
330         pdd = kfd_get_process_device_data(dev, pqm->process);
331         if (!pdd) {
332                 pr_err("Process device data doesn't exist\n");
333                 return -1;
334         }
335
336         /*
337          * for debug process, verify that it is within the static queues limit
338          * currently limit is set to half of the total avail HQD slots
339          * If we are just about to create DIQ, the is_debug flag is not set yet
340          * Hence we also check the type as well
341          */
342         if ((pdd->qpd.is_debug) || (type == KFD_QUEUE_TYPE_DIQ))
343                 max_queues = dev->kfd->device_info.max_no_of_hqd/2;
344
345         if (pdd->qpd.queue_count >= max_queues)
346                 return -ENOSPC;
347
348         if (q_data) {
349                 retval = assign_queue_slot_by_qid(pqm, q_data->q_id);
350                 *qid = q_data->q_id;
351         } else
352                 retval = find_available_queue_slot(pqm, qid);
353
354         if (retval != 0)
355                 return retval;
356
357         if (list_empty(&pdd->qpd.queues_list) &&
358             list_empty(&pdd->qpd.priv_queue_list))
359                 dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
360
361         pqn = kzalloc(sizeof(*pqn), GFP_KERNEL);
362         if (!pqn) {
363                 retval = -ENOMEM;
364                 goto err_allocate_pqn;
365         }
366
367         switch (type) {
368         case KFD_QUEUE_TYPE_SDMA:
369         case KFD_QUEUE_TYPE_SDMA_XGMI:
370         case KFD_QUEUE_TYPE_SDMA_BY_ENG_ID:
371                 /* SDMA queues are always allocated statically no matter
372                  * which scheduler mode is used. We also do not need to
373                  * check whether a SDMA queue can be allocated here, because
374                  * allocate_sdma_queue() in create_queue() has the
375                  * corresponding check logic.
376                  */
377                 retval = init_user_queue(pqm, dev, &q, properties, f, *qid);
378                 if (retval != 0)
379                         goto err_create_queue;
380                 pqn->q = q;
381                 pqn->kq = NULL;
382                 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
383                                                     restore_mqd, restore_ctl_stack);
384                 print_queue(q);
385                 break;
386
387         case KFD_QUEUE_TYPE_COMPUTE:
388                 /* check if there is over subscription */
389                 if ((dev->dqm->sched_policy ==
390                      KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
391                 ((dev->dqm->processes_count >= dev->vm_info.vmid_num_kfd) ||
392                 (dev->dqm->active_queue_count >= get_cp_queues_num(dev->dqm)))) {
393                         pr_debug("Over-subscription is not allowed when amdkfd.sched_policy == 1\n");
394                         retval = -EPERM;
395                         goto err_create_queue;
396                 }
397
398                 retval = init_user_queue(pqm, dev, &q, properties, f, *qid);
399                 if (retval != 0)
400                         goto err_create_queue;
401                 pqn->q = q;
402                 pqn->kq = NULL;
403                 retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, q_data,
404                                                     restore_mqd, restore_ctl_stack);
405                 print_queue(q);
406                 break;
407         case KFD_QUEUE_TYPE_DIQ:
408                 kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_DIQ);
409                 if (!kq) {
410                         retval = -ENOMEM;
411                         goto err_create_queue;
412                 }
413                 kq->queue->properties.queue_id = *qid;
414                 pqn->kq = kq;
415                 pqn->q = NULL;
416                 retval = kfd_process_drain_interrupts(pdd);
417                 if (retval)
418                         break;
419
420                 retval = dev->dqm->ops.create_kernel_queue(dev->dqm,
421                                                         kq, &pdd->qpd);
422                 break;
423         default:
424                 WARN(1, "Invalid queue type %d", type);
425                 retval = -EINVAL;
426         }
427
428         if (retval != 0) {
429                 pr_err("Pasid 0x%x DQM create queue type %d failed. ret %d\n",
430                         pqm->process->pasid, type, retval);
431                 goto err_create_queue;
432         }
433
434         if (q && p_doorbell_offset_in_process) {
435                 /* Return the doorbell offset within the doorbell page
436                  * to the caller so it can be passed up to user mode
437                  * (in bytes).
438                  * relative doorbell index = Absolute doorbell index -
439                  * absolute index of first doorbell in the page.
440                  */
441                 uint32_t first_db_index = amdgpu_doorbell_index_on_bar(pdd->dev->adev,
442                                                                        pdd->qpd.proc_doorbells,
443                                                                        0,
444                                                                        pdd->dev->kfd->device_info.doorbell_size);
445
446                 *p_doorbell_offset_in_process = (q->properties.doorbell_off
447                                                 - first_db_index) * sizeof(uint32_t);
448         }
449
450         pr_debug("PQM After DQM create queue\n");
451
452         list_add(&pqn->process_queue_list, &pqm->queues);
453
454         if (q) {
455                 pr_debug("PQM done creating queue\n");
456                 kfd_procfs_add_queue(q);
457                 print_queue_properties(&q->properties);
458         }
459
460         return retval;
461
462 err_create_queue:
463         uninit_queue(q);
464         if (kq)
465                 kernel_queue_uninit(kq);
466         kfree(pqn);
467 err_allocate_pqn:
468         /* check if queues list is empty unregister process from device */
469         clear_bit(*qid, pqm->queue_slot_bitmap);
470         if (list_empty(&pdd->qpd.queues_list) &&
471             list_empty(&pdd->qpd.priv_queue_list))
472                 dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd);
473         return retval;
474 }
475
476 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
477 {
478         struct process_queue_node *pqn;
479         struct kfd_process_device *pdd;
480         struct device_queue_manager *dqm;
481         struct kfd_node *dev;
482         int retval;
483
484         dqm = NULL;
485
486         retval = 0;
487
488         pqn = get_queue_by_qid(pqm, qid);
489         if (!pqn) {
490                 pr_err("Queue id does not match any known queue\n");
491                 return -EINVAL;
492         }
493
494         dev = NULL;
495         if (pqn->kq)
496                 dev = pqn->kq->dev;
497         if (pqn->q)
498                 dev = pqn->q->device;
499         if (WARN_ON(!dev))
500                 return -ENODEV;
501
502         pdd = kfd_get_process_device_data(dev, pqm->process);
503         if (!pdd) {
504                 pr_err("Process device data doesn't exist\n");
505                 return -1;
506         }
507
508         if (pqn->kq) {
509                 /* destroy kernel queue (DIQ) */
510                 dqm = pqn->kq->dev->dqm;
511                 dqm->ops.destroy_kernel_queue(dqm, pqn->kq, &pdd->qpd);
512                 kernel_queue_uninit(pqn->kq);
513         }
514
515         if (pqn->q) {
516                 retval = kfd_queue_unref_bo_vas(pdd, &pqn->q->properties);
517                 if (retval)
518                         goto err_destroy_queue;
519
520                 dqm = pqn->q->device->dqm;
521                 retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q);
522                 if (retval) {
523                         pr_err("Pasid 0x%x destroy queue %d failed, ret %d\n",
524                                 pqm->process->pasid,
525                                 pqn->q->properties.queue_id, retval);
526                         if (retval != -ETIME)
527                                 goto err_destroy_queue;
528                 }
529                 kfd_procfs_del_queue(pqn->q);
530                 kfd_queue_release_buffers(pdd, &pqn->q->properties);
531                 pqm_clean_queue_resource(pqm, pqn);
532                 uninit_queue(pqn->q);
533         }
534
535         list_del(&pqn->process_queue_list);
536         kfree(pqn);
537         clear_bit(qid, pqm->queue_slot_bitmap);
538
539         if (list_empty(&pdd->qpd.queues_list) &&
540             list_empty(&pdd->qpd.priv_queue_list))
541                 dqm->ops.unregister_process(dqm, &pdd->qpd);
542
543 err_destroy_queue:
544         return retval;
545 }
546
547 int pqm_update_queue_properties(struct process_queue_manager *pqm,
548                                 unsigned int qid, struct queue_properties *p)
549 {
550         int retval;
551         struct process_queue_node *pqn;
552
553         pqn = get_queue_by_qid(pqm, qid);
554         if (!pqn || !pqn->q) {
555                 pr_debug("No queue %d exists for update operation\n", qid);
556                 return -EFAULT;
557         }
558
559         /*
560          * Update with NULL ring address is used to disable the queue
561          */
562         if (p->queue_address && p->queue_size) {
563                 struct kfd_process_device *pdd;
564                 struct amdgpu_vm *vm;
565                 struct queue *q = pqn->q;
566                 int err;
567
568                 pdd = kfd_get_process_device_data(q->device, q->process);
569                 if (!pdd)
570                         return -ENODEV;
571                 vm = drm_priv_to_vm(pdd->drm_priv);
572                 err = amdgpu_bo_reserve(vm->root.bo, false);
573                 if (err)
574                         return err;
575
576                 if (kfd_queue_buffer_get(vm, (void *)p->queue_address, &p->ring_bo,
577                                          p->queue_size)) {
578                         pr_debug("ring buf 0x%llx size 0x%llx not mapped on GPU\n",
579                                  p->queue_address, p->queue_size);
580                         return -EFAULT;
581                 }
582
583                 kfd_queue_unref_bo_va(vm, &pqn->q->properties.ring_bo);
584                 kfd_queue_buffer_put(&pqn->q->properties.ring_bo);
585                 amdgpu_bo_unreserve(vm->root.bo);
586
587                 pqn->q->properties.ring_bo = p->ring_bo;
588         }
589
590         pqn->q->properties.queue_address = p->queue_address;
591         pqn->q->properties.queue_size = p->queue_size;
592         pqn->q->properties.queue_percent = p->queue_percent;
593         pqn->q->properties.priority = p->priority;
594         pqn->q->properties.pm4_target_xcc = p->pm4_target_xcc;
595
596         retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
597                                                         pqn->q, NULL);
598         if (retval != 0)
599                 return retval;
600
601         return 0;
602 }
603
604 int pqm_update_mqd(struct process_queue_manager *pqm,
605                                 unsigned int qid, struct mqd_update_info *minfo)
606 {
607         int retval;
608         struct process_queue_node *pqn;
609
610         pqn = get_queue_by_qid(pqm, qid);
611         if (!pqn) {
612                 pr_debug("No queue %d exists for update operation\n", qid);
613                 return -EFAULT;
614         }
615
616         /* CUs are masked for debugger requirements so deny user mask  */
617         if (pqn->q->properties.is_dbg_wa && minfo && minfo->cu_mask.ptr)
618                 return -EBUSY;
619
620         /* ASICs that have WGPs must enforce pairwise enabled mask checks. */
621         if (minfo && minfo->cu_mask.ptr &&
622                         KFD_GC_VERSION(pqn->q->device) >= IP_VERSION(10, 0, 0)) {
623                 int i;
624
625                 for (i = 0; i < minfo->cu_mask.count; i += 2) {
626                         uint32_t cu_pair = (minfo->cu_mask.ptr[i / 32] >> (i % 32)) & 0x3;
627
628                         if (cu_pair && cu_pair != 0x3) {
629                                 pr_debug("CUs must be adjacent pairwise enabled.\n");
630                                 return -EINVAL;
631                         }
632                 }
633         }
634
635         retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
636                                                         pqn->q, minfo);
637         if (retval != 0)
638                 return retval;
639
640         if (minfo && minfo->cu_mask.ptr)
641                 pqn->q->properties.is_user_cu_masked = true;
642
643         return 0;
644 }
645
646 struct kernel_queue *pqm_get_kernel_queue(
647                                         struct process_queue_manager *pqm,
648                                         unsigned int qid)
649 {
650         struct process_queue_node *pqn;
651
652         pqn = get_queue_by_qid(pqm, qid);
653         if (pqn && pqn->kq)
654                 return pqn->kq;
655
656         return NULL;
657 }
658
659 struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
660                                         unsigned int qid)
661 {
662         struct process_queue_node *pqn;
663
664         pqn = get_queue_by_qid(pqm, qid);
665         return pqn ? pqn->q : NULL;
666 }
667
668 int pqm_get_wave_state(struct process_queue_manager *pqm,
669                        unsigned int qid,
670                        void __user *ctl_stack,
671                        u32 *ctl_stack_used_size,
672                        u32 *save_area_used_size)
673 {
674         struct process_queue_node *pqn;
675
676         pqn = get_queue_by_qid(pqm, qid);
677         if (!pqn) {
678                 pr_debug("amdkfd: No queue %d exists for operation\n",
679                          qid);
680                 return -EFAULT;
681         }
682
683         return pqn->q->device->dqm->ops.get_wave_state(pqn->q->device->dqm,
684                                                        pqn->q,
685                                                        ctl_stack,
686                                                        ctl_stack_used_size,
687                                                        save_area_used_size);
688 }
689
690 int pqm_get_queue_snapshot(struct process_queue_manager *pqm,
691                            uint64_t exception_clear_mask,
692                            void __user *buf,
693                            int *num_qss_entries,
694                            uint32_t *entry_size)
695 {
696         struct process_queue_node *pqn;
697         struct kfd_queue_snapshot_entry src;
698         uint32_t tmp_entry_size = *entry_size, tmp_qss_entries = *num_qss_entries;
699         int r = 0;
700
701         *num_qss_entries = 0;
702         if (!(*entry_size))
703                 return -EINVAL;
704
705         *entry_size = min_t(size_t, *entry_size, sizeof(struct kfd_queue_snapshot_entry));
706         mutex_lock(&pqm->process->event_mutex);
707
708         memset(&src, 0, sizeof(src));
709
710         list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
711                 if (!pqn->q)
712                         continue;
713
714                 if (*num_qss_entries < tmp_qss_entries) {
715                         set_queue_snapshot_entry(pqn->q, exception_clear_mask, &src);
716
717                         if (copy_to_user(buf, &src, *entry_size)) {
718                                 r = -EFAULT;
719                                 break;
720                         }
721                         buf += tmp_entry_size;
722                 }
723                 *num_qss_entries += 1;
724         }
725
726         mutex_unlock(&pqm->process->event_mutex);
727         return r;
728 }
729
730 static int get_queue_data_sizes(struct kfd_process_device *pdd,
731                                 struct queue *q,
732                                 uint32_t *mqd_size,
733                                 uint32_t *ctl_stack_size)
734 {
735         int ret;
736
737         ret = pqm_get_queue_checkpoint_info(&pdd->process->pqm,
738                                             q->properties.queue_id,
739                                             mqd_size,
740                                             ctl_stack_size);
741         if (ret)
742                 pr_err("Failed to get queue dump info (%d)\n", ret);
743
744         return ret;
745 }
746
747 int kfd_process_get_queue_info(struct kfd_process *p,
748                                uint32_t *num_queues,
749                                uint64_t *priv_data_sizes)
750 {
751         uint32_t extra_data_sizes = 0;
752         struct queue *q;
753         int i;
754         int ret;
755
756         *num_queues = 0;
757
758         /* Run over all PDDs of the process */
759         for (i = 0; i < p->n_pdds; i++) {
760                 struct kfd_process_device *pdd = p->pdds[i];
761
762                 list_for_each_entry(q, &pdd->qpd.queues_list, list) {
763                         if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE ||
764                                 q->properties.type == KFD_QUEUE_TYPE_SDMA ||
765                                 q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
766                                 uint32_t mqd_size, ctl_stack_size;
767
768                                 *num_queues = *num_queues + 1;
769
770                                 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
771                                 if (ret)
772                                         return ret;
773
774                                 extra_data_sizes += mqd_size + ctl_stack_size;
775                         } else {
776                                 pr_err("Unsupported queue type (%d)\n", q->properties.type);
777                                 return -EOPNOTSUPP;
778                         }
779                 }
780         }
781         *priv_data_sizes = extra_data_sizes +
782                                 (*num_queues * sizeof(struct kfd_criu_queue_priv_data));
783
784         return 0;
785 }
786
787 static int pqm_checkpoint_mqd(struct process_queue_manager *pqm,
788                               unsigned int qid,
789                               void *mqd,
790                               void *ctl_stack)
791 {
792         struct process_queue_node *pqn;
793
794         pqn = get_queue_by_qid(pqm, qid);
795         if (!pqn) {
796                 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
797                 return -EFAULT;
798         }
799
800         if (!pqn->q->device->dqm->ops.checkpoint_mqd) {
801                 pr_err("amdkfd: queue dumping not supported on this device\n");
802                 return -EOPNOTSUPP;
803         }
804
805         return pqn->q->device->dqm->ops.checkpoint_mqd(pqn->q->device->dqm,
806                                                        pqn->q, mqd, ctl_stack);
807 }
808
809 static int criu_checkpoint_queue(struct kfd_process_device *pdd,
810                            struct queue *q,
811                            struct kfd_criu_queue_priv_data *q_data)
812 {
813         uint8_t *mqd, *ctl_stack;
814         int ret;
815
816         mqd = (void *)(q_data + 1);
817         ctl_stack = mqd + q_data->mqd_size;
818
819         q_data->gpu_id = pdd->user_gpu_id;
820         q_data->type = q->properties.type;
821         q_data->format = q->properties.format;
822         q_data->q_id =  q->properties.queue_id;
823         q_data->q_address = q->properties.queue_address;
824         q_data->q_size = q->properties.queue_size;
825         q_data->priority = q->properties.priority;
826         q_data->q_percent = q->properties.queue_percent;
827         q_data->read_ptr_addr = (uint64_t)q->properties.read_ptr;
828         q_data->write_ptr_addr = (uint64_t)q->properties.write_ptr;
829         q_data->doorbell_id = q->doorbell_id;
830
831         q_data->sdma_id = q->sdma_id;
832
833         q_data->eop_ring_buffer_address =
834                 q->properties.eop_ring_buffer_address;
835
836         q_data->eop_ring_buffer_size = q->properties.eop_ring_buffer_size;
837
838         q_data->ctx_save_restore_area_address =
839                 q->properties.ctx_save_restore_area_address;
840
841         q_data->ctx_save_restore_area_size =
842                 q->properties.ctx_save_restore_area_size;
843
844         q_data->gws = !!q->gws;
845
846         ret = pqm_checkpoint_mqd(&pdd->process->pqm, q->properties.queue_id, mqd, ctl_stack);
847         if (ret) {
848                 pr_err("Failed checkpoint queue_mqd (%d)\n", ret);
849                 return ret;
850         }
851
852         pr_debug("Dumping Queue: gpu_id:%x queue_id:%u\n", q_data->gpu_id, q_data->q_id);
853         return ret;
854 }
855
856 static int criu_checkpoint_queues_device(struct kfd_process_device *pdd,
857                                    uint8_t __user *user_priv,
858                                    unsigned int *q_index,
859                                    uint64_t *queues_priv_data_offset)
860 {
861         unsigned int q_private_data_size = 0;
862         uint8_t *q_private_data = NULL; /* Local buffer to store individual queue private data */
863         struct queue *q;
864         int ret = 0;
865
866         list_for_each_entry(q, &pdd->qpd.queues_list, list) {
867                 struct kfd_criu_queue_priv_data *q_data;
868                 uint64_t q_data_size;
869                 uint32_t mqd_size;
870                 uint32_t ctl_stack_size;
871
872                 if (q->properties.type != KFD_QUEUE_TYPE_COMPUTE &&
873                         q->properties.type != KFD_QUEUE_TYPE_SDMA &&
874                         q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI) {
875
876                         pr_err("Unsupported queue type (%d)\n", q->properties.type);
877                         ret = -EOPNOTSUPP;
878                         break;
879                 }
880
881                 ret = get_queue_data_sizes(pdd, q, &mqd_size, &ctl_stack_size);
882                 if (ret)
883                         break;
884
885                 q_data_size = sizeof(*q_data) + mqd_size + ctl_stack_size;
886
887                 /* Increase local buffer space if needed */
888                 if (q_private_data_size < q_data_size) {
889                         kfree(q_private_data);
890
891                         q_private_data = kzalloc(q_data_size, GFP_KERNEL);
892                         if (!q_private_data) {
893                                 ret = -ENOMEM;
894                                 break;
895                         }
896                         q_private_data_size = q_data_size;
897                 }
898
899                 q_data = (struct kfd_criu_queue_priv_data *)q_private_data;
900
901                 /* data stored in this order: priv_data, mqd, ctl_stack */
902                 q_data->mqd_size = mqd_size;
903                 q_data->ctl_stack_size = ctl_stack_size;
904
905                 ret = criu_checkpoint_queue(pdd, q, q_data);
906                 if (ret)
907                         break;
908
909                 q_data->object_type = KFD_CRIU_OBJECT_TYPE_QUEUE;
910
911                 ret = copy_to_user(user_priv + *queues_priv_data_offset,
912                                 q_data, q_data_size);
913                 if (ret) {
914                         ret = -EFAULT;
915                         break;
916                 }
917                 *queues_priv_data_offset += q_data_size;
918                 *q_index = *q_index + 1;
919         }
920
921         kfree(q_private_data);
922
923         return ret;
924 }
925
926 int kfd_criu_checkpoint_queues(struct kfd_process *p,
927                          uint8_t __user *user_priv_data,
928                          uint64_t *priv_data_offset)
929 {
930         int ret = 0, pdd_index, q_index = 0;
931
932         for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) {
933                 struct kfd_process_device *pdd = p->pdds[pdd_index];
934
935                 /*
936                  * criu_checkpoint_queues_device will copy data to user and update q_index and
937                  * queues_priv_data_offset
938                  */
939                 ret = criu_checkpoint_queues_device(pdd, user_priv_data, &q_index,
940                                               priv_data_offset);
941
942                 if (ret)
943                         break;
944         }
945
946         return ret;
947 }
948
949 static void set_queue_properties_from_criu(struct queue_properties *qp,
950                                           struct kfd_criu_queue_priv_data *q_data)
951 {
952         qp->is_interop = false;
953         qp->queue_percent = q_data->q_percent;
954         qp->priority = q_data->priority;
955         qp->queue_address = q_data->q_address;
956         qp->queue_size = q_data->q_size;
957         qp->read_ptr = (uint32_t *) q_data->read_ptr_addr;
958         qp->write_ptr = (uint32_t *) q_data->write_ptr_addr;
959         qp->eop_ring_buffer_address = q_data->eop_ring_buffer_address;
960         qp->eop_ring_buffer_size = q_data->eop_ring_buffer_size;
961         qp->ctx_save_restore_area_address = q_data->ctx_save_restore_area_address;
962         qp->ctx_save_restore_area_size = q_data->ctx_save_restore_area_size;
963         qp->ctl_stack_size = q_data->ctl_stack_size;
964         qp->type = q_data->type;
965         qp->format = q_data->format;
966 }
967
968 int kfd_criu_restore_queue(struct kfd_process *p,
969                            uint8_t __user *user_priv_ptr,
970                            uint64_t *priv_data_offset,
971                            uint64_t max_priv_data_size)
972 {
973         uint8_t *mqd, *ctl_stack, *q_extra_data = NULL;
974         struct kfd_criu_queue_priv_data *q_data;
975         struct kfd_process_device *pdd;
976         uint64_t q_extra_data_size;
977         struct queue_properties qp;
978         unsigned int queue_id;
979         int ret = 0;
980
981         if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size)
982                 return -EINVAL;
983
984         q_data = kmalloc(sizeof(*q_data), GFP_KERNEL);
985         if (!q_data)
986                 return -ENOMEM;
987
988         ret = copy_from_user(q_data, user_priv_ptr + *priv_data_offset, sizeof(*q_data));
989         if (ret) {
990                 ret = -EFAULT;
991                 goto exit;
992         }
993
994         *priv_data_offset += sizeof(*q_data);
995         q_extra_data_size = (uint64_t)q_data->ctl_stack_size + q_data->mqd_size;
996
997         if (*priv_data_offset + q_extra_data_size > max_priv_data_size) {
998                 ret = -EINVAL;
999                 goto exit;
1000         }
1001
1002         q_extra_data = kmalloc(q_extra_data_size, GFP_KERNEL);
1003         if (!q_extra_data) {
1004                 ret = -ENOMEM;
1005                 goto exit;
1006         }
1007
1008         ret = copy_from_user(q_extra_data, user_priv_ptr + *priv_data_offset, q_extra_data_size);
1009         if (ret) {
1010                 ret = -EFAULT;
1011                 goto exit;
1012         }
1013
1014         *priv_data_offset += q_extra_data_size;
1015
1016         pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
1017         if (!pdd) {
1018                 pr_err("Failed to get pdd\n");
1019                 ret = -EINVAL;
1020                 goto exit;
1021         }
1022
1023         /* data stored in this order: mqd, ctl_stack */
1024         mqd = q_extra_data;
1025         ctl_stack = mqd + q_data->mqd_size;
1026
1027         memset(&qp, 0, sizeof(qp));
1028         set_queue_properties_from_criu(&qp, q_data);
1029
1030         print_queue_properties(&qp);
1031
1032         ret = pqm_create_queue(&p->pqm, pdd->dev, NULL, &qp, &queue_id, q_data, mqd, ctl_stack,
1033                                 NULL);
1034         if (ret) {
1035                 pr_err("Failed to create new queue err:%d\n", ret);
1036                 goto exit;
1037         }
1038
1039         if (q_data->gws)
1040                 ret = pqm_set_gws(&p->pqm, q_data->q_id, pdd->dev->gws);
1041
1042 exit:
1043         if (ret)
1044                 pr_err("Failed to restore queue (%d)\n", ret);
1045         else
1046                 pr_debug("Queue id %d was restored successfully\n", queue_id);
1047
1048         kfree(q_data);
1049         kfree(q_extra_data);
1050
1051         return ret;
1052 }
1053
1054 int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
1055                                   unsigned int qid,
1056                                   uint32_t *mqd_size,
1057                                   uint32_t *ctl_stack_size)
1058 {
1059         struct process_queue_node *pqn;
1060
1061         pqn = get_queue_by_qid(pqm, qid);
1062         if (!pqn) {
1063                 pr_debug("amdkfd: No queue %d exists for operation\n", qid);
1064                 return -EFAULT;
1065         }
1066
1067         if (!pqn->q->device->dqm->ops.get_queue_checkpoint_info) {
1068                 pr_err("amdkfd: queue dumping not supported on this device\n");
1069                 return -EOPNOTSUPP;
1070         }
1071
1072         pqn->q->device->dqm->ops.get_queue_checkpoint_info(pqn->q->device->dqm,
1073                                                        pqn->q, mqd_size,
1074                                                        ctl_stack_size);
1075         return 0;
1076 }
1077
1078 #if defined(CONFIG_DEBUG_FS)
1079
1080 int pqm_debugfs_mqds(struct seq_file *m, void *data)
1081 {
1082         struct process_queue_manager *pqm = data;
1083         struct process_queue_node *pqn;
1084         struct queue *q;
1085         enum KFD_MQD_TYPE mqd_type;
1086         struct mqd_manager *mqd_mgr;
1087         int r = 0, xcc, num_xccs = 1;
1088         void *mqd;
1089         uint64_t size = 0;
1090
1091         list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
1092                 if (pqn->q) {
1093                         q = pqn->q;
1094                         switch (q->properties.type) {
1095                         case KFD_QUEUE_TYPE_SDMA:
1096                         case KFD_QUEUE_TYPE_SDMA_XGMI:
1097                                 seq_printf(m, "  SDMA queue on device %x\n",
1098                                            q->device->id);
1099                                 mqd_type = KFD_MQD_TYPE_SDMA;
1100                                 break;
1101                         case KFD_QUEUE_TYPE_COMPUTE:
1102                                 seq_printf(m, "  Compute queue on device %x\n",
1103                                            q->device->id);
1104                                 mqd_type = KFD_MQD_TYPE_CP;
1105                                 num_xccs = NUM_XCC(q->device->xcc_mask);
1106                                 break;
1107                         default:
1108                                 seq_printf(m,
1109                                 "  Bad user queue type %d on device %x\n",
1110                                            q->properties.type, q->device->id);
1111                                 continue;
1112                         }
1113                         mqd_mgr = q->device->dqm->mqd_mgrs[mqd_type];
1114                         size = mqd_mgr->mqd_stride(mqd_mgr,
1115                                                         &q->properties);
1116                 } else if (pqn->kq) {
1117                         q = pqn->kq->queue;
1118                         mqd_mgr = pqn->kq->mqd_mgr;
1119                         switch (q->properties.type) {
1120                         case KFD_QUEUE_TYPE_DIQ:
1121                                 seq_printf(m, "  DIQ on device %x\n",
1122                                            pqn->kq->dev->id);
1123                                 break;
1124                         default:
1125                                 seq_printf(m,
1126                                 "  Bad kernel queue type %d on device %x\n",
1127                                            q->properties.type,
1128                                            pqn->kq->dev->id);
1129                                 continue;
1130                         }
1131                 } else {
1132                         seq_printf(m,
1133                 "  Weird: Queue node with neither kernel nor user queue\n");
1134                         continue;
1135                 }
1136
1137                 for (xcc = 0; xcc < num_xccs; xcc++) {
1138                         mqd = q->mqd + size * xcc;
1139                         r = mqd_mgr->debugfs_show_mqd(m, mqd);
1140                         if (r != 0)
1141                                 break;
1142                 }
1143         }
1144
1145         return r;
1146 }
1147
1148 #endif
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