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d87f36a0 | 1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
19f6d2a6 | 2 | /* |
d87f36a0 | 3 | * Copyright 2014-2022 Advanced Micro Devices, Inc. |
19f6d2a6 OG |
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 | #include <linux/mutex.h> | |
25 | #include <linux/log2.h> | |
26 | #include <linux/sched.h> | |
6e84f315 | 27 | #include <linux/sched/mm.h> |
c7b1243e | 28 | #include <linux/sched/task.h> |
32cb59f3 | 29 | #include <linux/mmu_context.h> |
19f6d2a6 | 30 | #include <linux/slab.h> |
b17f068a | 31 | #include <linux/amd-iommu.h> |
19f6d2a6 | 32 | #include <linux/notifier.h> |
dd59239a | 33 | #include <linux/compat.h> |
373d7080 | 34 | #include <linux/mman.h> |
b84394e2 | 35 | #include <linux/file.h> |
9593f4d6 | 36 | #include <linux/pm_runtime.h> |
5b87245f | 37 | #include "amdgpu_amdkfd.h" |
ffa02269 | 38 | #include "amdgpu.h" |
dd59239a | 39 | |
19f6d2a6 OG |
40 | struct mm_struct; |
41 | ||
42 | #include "kfd_priv.h" | |
403575c4 | 43 | #include "kfd_device_queue_manager.h" |
64d1c3a4 | 44 | #include "kfd_iommu.h" |
42de677f | 45 | #include "kfd_svm.h" |
c7f21978 | 46 | #include "kfd_smi_events.h" |
19f6d2a6 | 47 | |
19f6d2a6 OG |
48 | /* |
49 | * List of struct kfd_process (field kfd_process). | |
50 | * Unique/indexed by mm_struct* | |
51 | */ | |
64d1c3a4 | 52 | DEFINE_HASHTABLE(kfd_processes_table, KFD_PROCESS_TABLE_SIZE); |
19f6d2a6 OG |
53 | static DEFINE_MUTEX(kfd_processes_mutex); |
54 | ||
64d1c3a4 | 55 | DEFINE_SRCU(kfd_processes_srcu); |
19f6d2a6 | 56 | |
1679ae8f | 57 | /* For process termination handling */ |
19f6d2a6 OG |
58 | static struct workqueue_struct *kfd_process_wq; |
59 | ||
1679ae8f FK |
60 | /* Ordered, single-threaded workqueue for restoring evicted |
61 | * processes. Restoring multiple processes concurrently under memory | |
62 | * pressure can lead to processes blocking each other from validating | |
63 | * their BOs and result in a live-lock situation where processes | |
64 | * remain evicted indefinitely. | |
65 | */ | |
66 | static struct workqueue_struct *kfd_restore_wq; | |
67 | ||
011bbb03 RB |
68 | static struct kfd_process *find_process(const struct task_struct *thread, |
69 | bool ref); | |
abb208a8 | 70 | static void kfd_process_ref_release(struct kref *ref); |
0029cab3 JG |
71 | static struct kfd_process *create_process(const struct task_struct *thread); |
72 | static int kfd_process_init_cwsr_apu(struct kfd_process *p, struct file *filep); | |
373d7080 | 73 | |
26103436 FK |
74 | static void evict_process_worker(struct work_struct *work); |
75 | static void restore_process_worker(struct work_struct *work); | |
76 | ||
68df0f19 LY |
77 | static void kfd_process_device_destroy_cwsr_dgpu(struct kfd_process_device *pdd); |
78 | ||
de9f26bb KR |
79 | struct kfd_procfs_tree { |
80 | struct kobject *kobj; | |
81 | }; | |
82 | ||
83 | static struct kfd_procfs_tree procfs; | |
84 | ||
32cb59f3 MJ |
85 | /* |
86 | * Structure for SDMA activity tracking | |
87 | */ | |
88 | struct kfd_sdma_activity_handler_workarea { | |
89 | struct work_struct sdma_activity_work; | |
90 | struct kfd_process_device *pdd; | |
91 | uint64_t sdma_activity_counter; | |
92 | }; | |
93 | ||
d69fd951 | 94 | struct temp_sdma_queue_list { |
818b0324 | 95 | uint64_t __user *rptr; |
d69fd951 MJ |
96 | uint64_t sdma_val; |
97 | unsigned int queue_id; | |
98 | struct list_head list; | |
99 | }; | |
100 | ||
32cb59f3 MJ |
101 | static void kfd_sdma_activity_worker(struct work_struct *work) |
102 | { | |
103 | struct kfd_sdma_activity_handler_workarea *workarea; | |
104 | struct kfd_process_device *pdd; | |
105 | uint64_t val; | |
106 | struct mm_struct *mm; | |
107 | struct queue *q; | |
108 | struct qcm_process_device *qpd; | |
109 | struct device_queue_manager *dqm; | |
110 | int ret = 0; | |
d69fd951 MJ |
111 | struct temp_sdma_queue_list sdma_q_list; |
112 | struct temp_sdma_queue_list *sdma_q, *next; | |
32cb59f3 MJ |
113 | |
114 | workarea = container_of(work, struct kfd_sdma_activity_handler_workarea, | |
115 | sdma_activity_work); | |
32cb59f3 MJ |
116 | |
117 | pdd = workarea->pdd; | |
2652bda7 CIK |
118 | if (!pdd) |
119 | return; | |
32cb59f3 MJ |
120 | dqm = pdd->dev->dqm; |
121 | qpd = &pdd->qpd; | |
2652bda7 | 122 | if (!dqm || !qpd) |
32cb59f3 | 123 | return; |
d69fd951 MJ |
124 | /* |
125 | * Total SDMA activity is current SDMA activity + past SDMA activity | |
126 | * Past SDMA count is stored in pdd. | |
127 | * To get the current activity counters for all active SDMA queues, | |
128 | * we loop over all SDMA queues and get their counts from user-space. | |
129 | * | |
130 | * We cannot call get_user() with dqm_lock held as it can cause | |
131 | * a circular lock dependency situation. To read the SDMA stats, | |
132 | * we need to do the following: | |
133 | * | |
134 | * 1. Create a temporary list of SDMA queue nodes from the qpd->queues_list, | |
135 | * with dqm_lock/dqm_unlock(). | |
136 | * 2. Call get_user() for each node in temporary list without dqm_lock. | |
137 | * Save the SDMA count for each node and also add the count to the total | |
138 | * SDMA count counter. | |
139 | * Its possible, during this step, a few SDMA queue nodes got deleted | |
140 | * from the qpd->queues_list. | |
141 | * 3. Do a second pass over qpd->queues_list to check if any nodes got deleted. | |
142 | * If any node got deleted, its SDMA count would be captured in the sdma | |
143 | * past activity counter. So subtract the SDMA counter stored in step 2 | |
144 | * for this node from the total SDMA count. | |
145 | */ | |
146 | INIT_LIST_HEAD(&sdma_q_list.list); | |
32cb59f3 | 147 | |
d69fd951 MJ |
148 | /* |
149 | * Create the temp list of all SDMA queues | |
150 | */ | |
151 | dqm_lock(dqm); | |
152 | ||
153 | list_for_each_entry(q, &qpd->queues_list, list) { | |
154 | if ((q->properties.type != KFD_QUEUE_TYPE_SDMA) && | |
155 | (q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI)) | |
156 | continue; | |
157 | ||
158 | sdma_q = kzalloc(sizeof(struct temp_sdma_queue_list), GFP_KERNEL); | |
159 | if (!sdma_q) { | |
160 | dqm_unlock(dqm); | |
161 | goto cleanup; | |
162 | } | |
163 | ||
164 | INIT_LIST_HEAD(&sdma_q->list); | |
818b0324 | 165 | sdma_q->rptr = (uint64_t __user *)q->properties.read_ptr; |
d69fd951 MJ |
166 | sdma_q->queue_id = q->properties.queue_id; |
167 | list_add_tail(&sdma_q->list, &sdma_q_list.list); | |
32cb59f3 MJ |
168 | } |
169 | ||
d69fd951 MJ |
170 | /* |
171 | * If the temp list is empty, then no SDMA queues nodes were found in | |
172 | * qpd->queues_list. Return the past activity count as the total sdma | |
173 | * count | |
174 | */ | |
175 | if (list_empty(&sdma_q_list.list)) { | |
176 | workarea->sdma_activity_counter = pdd->sdma_past_activity_counter; | |
177 | dqm_unlock(dqm); | |
178 | return; | |
179 | } | |
32cb59f3 | 180 | |
d69fd951 | 181 | dqm_unlock(dqm); |
32cb59f3 MJ |
182 | |
183 | /* | |
d69fd951 | 184 | * Get the usage count for each SDMA queue in temp_list. |
32cb59f3 | 185 | */ |
d69fd951 MJ |
186 | mm = get_task_mm(pdd->process->lead_thread); |
187 | if (!mm) | |
188 | goto cleanup; | |
189 | ||
9555152b | 190 | kthread_use_mm(mm); |
d69fd951 MJ |
191 | |
192 | list_for_each_entry(sdma_q, &sdma_q_list.list, list) { | |
193 | val = 0; | |
194 | ret = read_sdma_queue_counter(sdma_q->rptr, &val); | |
195 | if (ret) { | |
196 | pr_debug("Failed to read SDMA queue active counter for queue id: %d", | |
197 | sdma_q->queue_id); | |
198 | } else { | |
199 | sdma_q->sdma_val = val; | |
200 | workarea->sdma_activity_counter += val; | |
201 | } | |
202 | } | |
203 | ||
9555152b | 204 | kthread_unuse_mm(mm); |
d69fd951 | 205 | mmput(mm); |
32cb59f3 MJ |
206 | |
207 | /* | |
d69fd951 MJ |
208 | * Do a second iteration over qpd_queues_list to check if any SDMA |
209 | * nodes got deleted while fetching SDMA counter. | |
32cb59f3 | 210 | */ |
d69fd951 MJ |
211 | dqm_lock(dqm); |
212 | ||
213 | workarea->sdma_activity_counter += pdd->sdma_past_activity_counter; | |
214 | ||
32cb59f3 | 215 | list_for_each_entry(q, &qpd->queues_list, list) { |
d69fd951 MJ |
216 | if (list_empty(&sdma_q_list.list)) |
217 | break; | |
218 | ||
219 | if ((q->properties.type != KFD_QUEUE_TYPE_SDMA) && | |
220 | (q->properties.type != KFD_QUEUE_TYPE_SDMA_XGMI)) | |
221 | continue; | |
222 | ||
223 | list_for_each_entry_safe(sdma_q, next, &sdma_q_list.list, list) { | |
818b0324 | 224 | if (((uint64_t __user *)q->properties.read_ptr == sdma_q->rptr) && |
d69fd951 MJ |
225 | (sdma_q->queue_id == q->properties.queue_id)) { |
226 | list_del(&sdma_q->list); | |
227 | kfree(sdma_q); | |
228 | break; | |
229 | } | |
32cb59f3 MJ |
230 | } |
231 | } | |
232 | ||
233 | dqm_unlock(dqm); | |
d69fd951 MJ |
234 | |
235 | /* | |
236 | * If temp list is not empty, it implies some queues got deleted | |
237 | * from qpd->queues_list during SDMA usage read. Subtract the SDMA | |
238 | * count for each node from the total SDMA count. | |
239 | */ | |
240 | list_for_each_entry_safe(sdma_q, next, &sdma_q_list.list, list) { | |
241 | workarea->sdma_activity_counter -= sdma_q->sdma_val; | |
242 | list_del(&sdma_q->list); | |
243 | kfree(sdma_q); | |
244 | } | |
245 | ||
246 | return; | |
247 | ||
248 | cleanup: | |
249 | list_for_each_entry_safe(sdma_q, next, &sdma_q_list.list, list) { | |
250 | list_del(&sdma_q->list); | |
251 | kfree(sdma_q); | |
252 | } | |
32cb59f3 MJ |
253 | } |
254 | ||
f2fa07b3 | 255 | /** |
bbe04dec | 256 | * kfd_get_cu_occupancy - Collect number of waves in-flight on this device |
f2fa07b3 RE |
257 | * by current process. Translates acquired wave count into number of compute units |
258 | * that are occupied. | |
259 | * | |
bbe04dec | 260 | * @attr: Handle of attribute that allows reporting of wave count. The attribute |
f2fa07b3 RE |
261 | * handle encapsulates GPU device it is associated with, thereby allowing collection |
262 | * of waves in flight, etc | |
f2fa07b3 RE |
263 | * @buffer: Handle of user provided buffer updated with wave count |
264 | * | |
265 | * Return: Number of bytes written to user buffer or an error value | |
266 | */ | |
267 | static int kfd_get_cu_occupancy(struct attribute *attr, char *buffer) | |
268 | { | |
269 | int cu_cnt; | |
270 | int wave_cnt; | |
271 | int max_waves_per_cu; | |
272 | struct kfd_dev *dev = NULL; | |
273 | struct kfd_process *proc = NULL; | |
274 | struct kfd_process_device *pdd = NULL; | |
275 | ||
276 | pdd = container_of(attr, struct kfd_process_device, attr_cu_occupancy); | |
277 | dev = pdd->dev; | |
278 | if (dev->kfd2kgd->get_cu_occupancy == NULL) | |
279 | return -EINVAL; | |
280 | ||
281 | cu_cnt = 0; | |
282 | proc = pdd->process; | |
283 | if (pdd->qpd.queue_count == 0) { | |
284 | pr_debug("Gpu-Id: %d has no active queues for process %d\n", | |
285 | dev->id, proc->pasid); | |
286 | return snprintf(buffer, PAGE_SIZE, "%d\n", cu_cnt); | |
287 | } | |
288 | ||
289 | /* Collect wave count from device if it supports */ | |
290 | wave_cnt = 0; | |
291 | max_waves_per_cu = 0; | |
3356c38d | 292 | dev->kfd2kgd->get_cu_occupancy(dev->adev, proc->pasid, &wave_cnt, |
f2fa07b3 RE |
293 | &max_waves_per_cu); |
294 | ||
295 | /* Translate wave count to number of compute units */ | |
296 | cu_cnt = (wave_cnt + (max_waves_per_cu - 1)) / max_waves_per_cu; | |
297 | return snprintf(buffer, PAGE_SIZE, "%d\n", cu_cnt); | |
298 | } | |
299 | ||
de9f26bb KR |
300 | static ssize_t kfd_procfs_show(struct kobject *kobj, struct attribute *attr, |
301 | char *buffer) | |
302 | { | |
de9f26bb KR |
303 | if (strcmp(attr->name, "pasid") == 0) { |
304 | struct kfd_process *p = container_of(attr, struct kfd_process, | |
305 | attr_pasid); | |
d4566dee MJ |
306 | |
307 | return snprintf(buffer, PAGE_SIZE, "%d\n", p->pasid); | |
308 | } else if (strncmp(attr->name, "vram_", 5) == 0) { | |
309 | struct kfd_process_device *pdd = container_of(attr, struct kfd_process_device, | |
310 | attr_vram); | |
32cb59f3 MJ |
311 | return snprintf(buffer, PAGE_SIZE, "%llu\n", READ_ONCE(pdd->vram_usage)); |
312 | } else if (strncmp(attr->name, "sdma_", 5) == 0) { | |
313 | struct kfd_process_device *pdd = container_of(attr, struct kfd_process_device, | |
314 | attr_sdma); | |
315 | struct kfd_sdma_activity_handler_workarea sdma_activity_work_handler; | |
316 | ||
317 | INIT_WORK(&sdma_activity_work_handler.sdma_activity_work, | |
318 | kfd_sdma_activity_worker); | |
319 | ||
320 | sdma_activity_work_handler.pdd = pdd; | |
5960e022 | 321 | sdma_activity_work_handler.sdma_activity_counter = 0; |
32cb59f3 MJ |
322 | |
323 | schedule_work(&sdma_activity_work_handler.sdma_activity_work); | |
324 | ||
325 | flush_work(&sdma_activity_work_handler.sdma_activity_work); | |
326 | ||
327 | return snprintf(buffer, PAGE_SIZE, "%llu\n", | |
328 | (sdma_activity_work_handler.sdma_activity_counter)/ | |
329 | SDMA_ACTIVITY_DIVISOR); | |
de9f26bb KR |
330 | } else { |
331 | pr_err("Invalid attribute"); | |
332 | return -EINVAL; | |
333 | } | |
334 | ||
d4566dee | 335 | return 0; |
de9f26bb KR |
336 | } |
337 | ||
338 | static void kfd_procfs_kobj_release(struct kobject *kobj) | |
339 | { | |
340 | kfree(kobj); | |
341 | } | |
342 | ||
343 | static const struct sysfs_ops kfd_procfs_ops = { | |
344 | .show = kfd_procfs_show, | |
345 | }; | |
346 | ||
347 | static struct kobj_type procfs_type = { | |
348 | .release = kfd_procfs_kobj_release, | |
349 | .sysfs_ops = &kfd_procfs_ops, | |
350 | }; | |
351 | ||
352 | void kfd_procfs_init(void) | |
353 | { | |
354 | int ret = 0; | |
355 | ||
356 | procfs.kobj = kfd_alloc_struct(procfs.kobj); | |
357 | if (!procfs.kobj) | |
358 | return; | |
359 | ||
360 | ret = kobject_init_and_add(procfs.kobj, &procfs_type, | |
361 | &kfd_device->kobj, "proc"); | |
362 | if (ret) { | |
363 | pr_warn("Could not create procfs proc folder"); | |
364 | /* If we fail to create the procfs, clean up */ | |
365 | kfd_procfs_shutdown(); | |
366 | } | |
367 | } | |
368 | ||
369 | void kfd_procfs_shutdown(void) | |
370 | { | |
371 | if (procfs.kobj) { | |
372 | kobject_del(procfs.kobj); | |
373 | kobject_put(procfs.kobj); | |
374 | procfs.kobj = NULL; | |
375 | } | |
376 | } | |
19f6d2a6 | 377 | |
6d220a7e AL |
378 | static ssize_t kfd_procfs_queue_show(struct kobject *kobj, |
379 | struct attribute *attr, char *buffer) | |
380 | { | |
381 | struct queue *q = container_of(kobj, struct queue, kobj); | |
382 | ||
383 | if (!strcmp(attr->name, "size")) | |
384 | return snprintf(buffer, PAGE_SIZE, "%llu", | |
385 | q->properties.queue_size); | |
386 | else if (!strcmp(attr->name, "type")) | |
387 | return snprintf(buffer, PAGE_SIZE, "%d", q->properties.type); | |
388 | else if (!strcmp(attr->name, "gpuid")) | |
389 | return snprintf(buffer, PAGE_SIZE, "%u", q->device->id); | |
390 | else | |
391 | pr_err("Invalid attribute"); | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
4327bed2 PC |
396 | static ssize_t kfd_procfs_stats_show(struct kobject *kobj, |
397 | struct attribute *attr, char *buffer) | |
398 | { | |
399 | if (strcmp(attr->name, "evicted_ms") == 0) { | |
400 | struct kfd_process_device *pdd = container_of(attr, | |
401 | struct kfd_process_device, | |
402 | attr_evict); | |
403 | uint64_t evict_jiffies; | |
404 | ||
405 | evict_jiffies = atomic64_read(&pdd->evict_duration_counter); | |
406 | ||
407 | return snprintf(buffer, | |
408 | PAGE_SIZE, | |
409 | "%llu\n", | |
410 | jiffies64_to_msecs(evict_jiffies)); | |
f2fa07b3 RE |
411 | |
412 | /* Sysfs handle that gets CU occupancy is per device */ | |
413 | } else if (strcmp(attr->name, "cu_occupancy") == 0) { | |
414 | return kfd_get_cu_occupancy(attr, buffer); | |
415 | } else { | |
4327bed2 | 416 | pr_err("Invalid attribute"); |
f2fa07b3 | 417 | } |
4327bed2 PC |
418 | |
419 | return 0; | |
420 | } | |
6d220a7e | 421 | |
751580b3 PY |
422 | static ssize_t kfd_sysfs_counters_show(struct kobject *kobj, |
423 | struct attribute *attr, char *buf) | |
424 | { | |
425 | struct kfd_process_device *pdd; | |
426 | ||
427 | if (!strcmp(attr->name, "faults")) { | |
428 | pdd = container_of(attr, struct kfd_process_device, | |
429 | attr_faults); | |
430 | return sysfs_emit(buf, "%llu\n", READ_ONCE(pdd->faults)); | |
431 | } | |
432 | if (!strcmp(attr->name, "page_in")) { | |
433 | pdd = container_of(attr, struct kfd_process_device, | |
434 | attr_page_in); | |
435 | return sysfs_emit(buf, "%llu\n", READ_ONCE(pdd->page_in)); | |
436 | } | |
437 | if (!strcmp(attr->name, "page_out")) { | |
438 | pdd = container_of(attr, struct kfd_process_device, | |
439 | attr_page_out); | |
440 | return sysfs_emit(buf, "%llu\n", READ_ONCE(pdd->page_out)); | |
441 | } | |
442 | return 0; | |
443 | } | |
444 | ||
6d220a7e AL |
445 | static struct attribute attr_queue_size = { |
446 | .name = "size", | |
447 | .mode = KFD_SYSFS_FILE_MODE | |
448 | }; | |
449 | ||
450 | static struct attribute attr_queue_type = { | |
451 | .name = "type", | |
452 | .mode = KFD_SYSFS_FILE_MODE | |
453 | }; | |
454 | ||
455 | static struct attribute attr_queue_gpuid = { | |
456 | .name = "gpuid", | |
457 | .mode = KFD_SYSFS_FILE_MODE | |
458 | }; | |
459 | ||
460 | static struct attribute *procfs_queue_attrs[] = { | |
461 | &attr_queue_size, | |
462 | &attr_queue_type, | |
463 | &attr_queue_gpuid, | |
464 | NULL | |
465 | }; | |
5fea167e | 466 | ATTRIBUTE_GROUPS(procfs_queue); |
6d220a7e AL |
467 | |
468 | static const struct sysfs_ops procfs_queue_ops = { | |
469 | .show = kfd_procfs_queue_show, | |
470 | }; | |
471 | ||
472 | static struct kobj_type procfs_queue_type = { | |
473 | .sysfs_ops = &procfs_queue_ops, | |
5fea167e | 474 | .default_groups = procfs_queue_groups, |
6d220a7e AL |
475 | }; |
476 | ||
4327bed2 PC |
477 | static const struct sysfs_ops procfs_stats_ops = { |
478 | .show = kfd_procfs_stats_show, | |
479 | }; | |
480 | ||
4327bed2 PC |
481 | static struct kobj_type procfs_stats_type = { |
482 | .sysfs_ops = &procfs_stats_ops, | |
dcdb4d90 | 483 | .release = kfd_procfs_kobj_release, |
4327bed2 PC |
484 | }; |
485 | ||
751580b3 PY |
486 | static const struct sysfs_ops sysfs_counters_ops = { |
487 | .show = kfd_sysfs_counters_show, | |
488 | }; | |
489 | ||
490 | static struct kobj_type sysfs_counters_type = { | |
491 | .sysfs_ops = &sysfs_counters_ops, | |
492 | .release = kfd_procfs_kobj_release, | |
493 | }; | |
494 | ||
6d220a7e AL |
495 | int kfd_procfs_add_queue(struct queue *q) |
496 | { | |
497 | struct kfd_process *proc; | |
498 | int ret; | |
499 | ||
500 | if (!q || !q->process) | |
501 | return -EINVAL; | |
502 | proc = q->process; | |
503 | ||
504 | /* Create proc/<pid>/queues/<queue id> folder */ | |
505 | if (!proc->kobj_queues) | |
506 | return -EFAULT; | |
507 | ret = kobject_init_and_add(&q->kobj, &procfs_queue_type, | |
508 | proc->kobj_queues, "%u", q->properties.queue_id); | |
509 | if (ret < 0) { | |
510 | pr_warn("Creating proc/<pid>/queues/%u failed", | |
511 | q->properties.queue_id); | |
512 | kobject_put(&q->kobj); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
75ae84c8 | 519 | static void kfd_sysfs_create_file(struct kobject *kobj, struct attribute *attr, |
32cb59f3 MJ |
520 | char *name) |
521 | { | |
75ae84c8 | 522 | int ret; |
32cb59f3 | 523 | |
75ae84c8 PY |
524 | if (!kobj || !attr || !name) |
525 | return; | |
32cb59f3 MJ |
526 | |
527 | attr->name = name; | |
528 | attr->mode = KFD_SYSFS_FILE_MODE; | |
529 | sysfs_attr_init(attr); | |
530 | ||
75ae84c8 PY |
531 | ret = sysfs_create_file(kobj, attr); |
532 | if (ret) | |
533 | pr_warn("Create sysfs %s/%s failed %d", kobj->name, name, ret); | |
32cb59f3 MJ |
534 | } |
535 | ||
75ae84c8 | 536 | static void kfd_procfs_add_sysfs_stats(struct kfd_process *p) |
4327bed2 | 537 | { |
75ae84c8 | 538 | int ret; |
6ae27841 | 539 | int i; |
4327bed2 PC |
540 | char stats_dir_filename[MAX_SYSFS_FILENAME_LEN]; |
541 | ||
75ae84c8 PY |
542 | if (!p || !p->kobj) |
543 | return; | |
4327bed2 PC |
544 | |
545 | /* | |
546 | * Create sysfs files for each GPU: | |
547 | * - proc/<pid>/stats_<gpuid>/ | |
548 | * - proc/<pid>/stats_<gpuid>/evicted_ms | |
f2fa07b3 | 549 | * - proc/<pid>/stats_<gpuid>/cu_occupancy |
4327bed2 | 550 | */ |
6ae27841 AS |
551 | for (i = 0; i < p->n_pdds; i++) { |
552 | struct kfd_process_device *pdd = p->pdds[i]; | |
4327bed2 PC |
553 | |
554 | snprintf(stats_dir_filename, MAX_SYSFS_FILENAME_LEN, | |
555 | "stats_%u", pdd->dev->id); | |
75ae84c8 PY |
556 | pdd->kobj_stats = kfd_alloc_struct(pdd->kobj_stats); |
557 | if (!pdd->kobj_stats) | |
558 | return; | |
4327bed2 | 559 | |
75ae84c8 PY |
560 | ret = kobject_init_and_add(pdd->kobj_stats, |
561 | &procfs_stats_type, | |
562 | p->kobj, | |
563 | stats_dir_filename); | |
4327bed2 PC |
564 | |
565 | if (ret) { | |
566 | pr_warn("Creating KFD proc/stats_%s folder failed", | |
75ae84c8 PY |
567 | stats_dir_filename); |
568 | kobject_put(pdd->kobj_stats); | |
569 | pdd->kobj_stats = NULL; | |
570 | return; | |
4327bed2 PC |
571 | } |
572 | ||
75ae84c8 PY |
573 | kfd_sysfs_create_file(pdd->kobj_stats, &pdd->attr_evict, |
574 | "evicted_ms"); | |
f2fa07b3 | 575 | /* Add sysfs file to report compute unit occupancy */ |
75ae84c8 PY |
576 | if (pdd->dev->kfd2kgd->get_cu_occupancy) |
577 | kfd_sysfs_create_file(pdd->kobj_stats, | |
578 | &pdd->attr_cu_occupancy, | |
579 | "cu_occupancy"); | |
4327bed2 | 580 | } |
4327bed2 PC |
581 | } |
582 | ||
751580b3 PY |
583 | static void kfd_procfs_add_sysfs_counters(struct kfd_process *p) |
584 | { | |
585 | int ret = 0; | |
586 | int i; | |
587 | char counters_dir_filename[MAX_SYSFS_FILENAME_LEN]; | |
588 | ||
589 | if (!p || !p->kobj) | |
590 | return; | |
591 | ||
592 | /* | |
593 | * Create sysfs files for each GPU which supports SVM | |
594 | * - proc/<pid>/counters_<gpuid>/ | |
595 | * - proc/<pid>/counters_<gpuid>/faults | |
596 | * - proc/<pid>/counters_<gpuid>/page_in | |
597 | * - proc/<pid>/counters_<gpuid>/page_out | |
598 | */ | |
599 | for_each_set_bit(i, p->svms.bitmap_supported, p->n_pdds) { | |
600 | struct kfd_process_device *pdd = p->pdds[i]; | |
601 | struct kobject *kobj_counters; | |
602 | ||
603 | snprintf(counters_dir_filename, MAX_SYSFS_FILENAME_LEN, | |
604 | "counters_%u", pdd->dev->id); | |
605 | kobj_counters = kfd_alloc_struct(kobj_counters); | |
606 | if (!kobj_counters) | |
607 | return; | |
608 | ||
609 | ret = kobject_init_and_add(kobj_counters, &sysfs_counters_type, | |
610 | p->kobj, counters_dir_filename); | |
611 | if (ret) { | |
612 | pr_warn("Creating KFD proc/%s folder failed", | |
613 | counters_dir_filename); | |
614 | kobject_put(kobj_counters); | |
615 | return; | |
616 | } | |
617 | ||
618 | pdd->kobj_counters = kobj_counters; | |
619 | kfd_sysfs_create_file(kobj_counters, &pdd->attr_faults, | |
620 | "faults"); | |
621 | kfd_sysfs_create_file(kobj_counters, &pdd->attr_page_in, | |
622 | "page_in"); | |
623 | kfd_sysfs_create_file(kobj_counters, &pdd->attr_page_out, | |
624 | "page_out"); | |
625 | } | |
626 | } | |
4327bed2 | 627 | |
75ae84c8 | 628 | static void kfd_procfs_add_sysfs_files(struct kfd_process *p) |
d4566dee | 629 | { |
6ae27841 | 630 | int i; |
d4566dee | 631 | |
75ae84c8 PY |
632 | if (!p || !p->kobj) |
633 | return; | |
d4566dee | 634 | |
32cb59f3 MJ |
635 | /* |
636 | * Create sysfs files for each GPU: | |
637 | * - proc/<pid>/vram_<gpuid> | |
638 | * - proc/<pid>/sdma_<gpuid> | |
639 | */ | |
6ae27841 AS |
640 | for (i = 0; i < p->n_pdds; i++) { |
641 | struct kfd_process_device *pdd = p->pdds[i]; | |
642 | ||
32cb59f3 | 643 | snprintf(pdd->vram_filename, MAX_SYSFS_FILENAME_LEN, "vram_%u", |
d4566dee | 644 | pdd->dev->id); |
75ae84c8 PY |
645 | kfd_sysfs_create_file(p->kobj, &pdd->attr_vram, |
646 | pdd->vram_filename); | |
32cb59f3 MJ |
647 | |
648 | snprintf(pdd->sdma_filename, MAX_SYSFS_FILENAME_LEN, "sdma_%u", | |
649 | pdd->dev->id); | |
75ae84c8 PY |
650 | kfd_sysfs_create_file(p->kobj, &pdd->attr_sdma, |
651 | pdd->sdma_filename); | |
d4566dee | 652 | } |
d4566dee MJ |
653 | } |
654 | ||
6d220a7e AL |
655 | void kfd_procfs_del_queue(struct queue *q) |
656 | { | |
657 | if (!q) | |
658 | return; | |
659 | ||
660 | kobject_del(&q->kobj); | |
661 | kobject_put(&q->kobj); | |
662 | } | |
663 | ||
1679ae8f | 664 | int kfd_process_create_wq(void) |
19f6d2a6 OG |
665 | { |
666 | if (!kfd_process_wq) | |
fd320bf6 | 667 | kfd_process_wq = alloc_workqueue("kfd_process_wq", 0, 0); |
1679ae8f FK |
668 | if (!kfd_restore_wq) |
669 | kfd_restore_wq = alloc_ordered_workqueue("kfd_restore_wq", 0); | |
670 | ||
671 | if (!kfd_process_wq || !kfd_restore_wq) { | |
672 | kfd_process_destroy_wq(); | |
673 | return -ENOMEM; | |
674 | } | |
675 | ||
676 | return 0; | |
19f6d2a6 OG |
677 | } |
678 | ||
679 | void kfd_process_destroy_wq(void) | |
680 | { | |
681 | if (kfd_process_wq) { | |
19f6d2a6 OG |
682 | destroy_workqueue(kfd_process_wq); |
683 | kfd_process_wq = NULL; | |
684 | } | |
1679ae8f FK |
685 | if (kfd_restore_wq) { |
686 | destroy_workqueue(kfd_restore_wq); | |
687 | kfd_restore_wq = NULL; | |
688 | } | |
19f6d2a6 OG |
689 | } |
690 | ||
f35751b8 | 691 | static void kfd_process_free_gpuvm(struct kgd_mem *mem, |
29d48b87 | 692 | struct kfd_process_device *pdd, void **kptr) |
f35751b8 FK |
693 | { |
694 | struct kfd_dev *dev = pdd->dev; | |
695 | ||
29d48b87 | 696 | if (kptr && *kptr) { |
4e2d1044 | 697 | amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel(mem); |
29d48b87 | 698 | *kptr = NULL; |
68df0f19 LY |
699 | } |
700 | ||
dff63da9 GS |
701 | amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(dev->adev, mem, pdd->drm_priv); |
702 | amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->adev, mem, pdd->drm_priv, | |
d4ec4bdc | 703 | NULL); |
f35751b8 FK |
704 | } |
705 | ||
706 | /* kfd_process_alloc_gpuvm - Allocate GPU VM for the KFD process | |
707 | * This function should be only called right after the process | |
708 | * is created and when kfd_processes_mutex is still being held | |
709 | * to avoid concurrency. Because of that exclusiveness, we do | |
710 | * not need to take p->mutex. | |
711 | */ | |
712 | static int kfd_process_alloc_gpuvm(struct kfd_process_device *pdd, | |
713 | uint64_t gpu_va, uint32_t size, | |
68df0f19 | 714 | uint32_t flags, struct kgd_mem **mem, void **kptr) |
f35751b8 FK |
715 | { |
716 | struct kfd_dev *kdev = pdd->dev; | |
f35751b8 FK |
717 | int err; |
718 | ||
dff63da9 | 719 | err = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(kdev->adev, gpu_va, size, |
011bbb03 RB |
720 | pdd->drm_priv, mem, NULL, |
721 | flags, false); | |
f35751b8 FK |
722 | if (err) |
723 | goto err_alloc_mem; | |
724 | ||
dff63da9 | 725 | err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(kdev->adev, *mem, |
4d30a83c | 726 | pdd->drm_priv); |
f35751b8 FK |
727 | if (err) |
728 | goto err_map_mem; | |
729 | ||
dff63da9 | 730 | err = amdgpu_amdkfd_gpuvm_sync_memory(kdev->adev, *mem, true); |
f35751b8 FK |
731 | if (err) { |
732 | pr_debug("Sync memory failed, wait interrupted by user signal\n"); | |
733 | goto sync_memory_failed; | |
734 | } | |
735 | ||
f35751b8 | 736 | if (kptr) { |
4e2d1044 | 737 | err = amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel( |
68df0f19 | 738 | (struct kgd_mem *)*mem, kptr, NULL); |
f35751b8 FK |
739 | if (err) { |
740 | pr_debug("Map GTT BO to kernel failed\n"); | |
68df0f19 | 741 | goto sync_memory_failed; |
f35751b8 FK |
742 | } |
743 | } | |
744 | ||
745 | return err; | |
746 | ||
f35751b8 | 747 | sync_memory_failed: |
dff63da9 | 748 | amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(kdev->adev, *mem, pdd->drm_priv); |
f35751b8 FK |
749 | |
750 | err_map_mem: | |
dff63da9 | 751 | amdgpu_amdkfd_gpuvm_free_memory_of_gpu(kdev->adev, *mem, pdd->drm_priv, |
d4ec4bdc | 752 | NULL); |
f35751b8 | 753 | err_alloc_mem: |
68df0f19 | 754 | *mem = NULL; |
f35751b8 FK |
755 | *kptr = NULL; |
756 | return err; | |
757 | } | |
758 | ||
552764b6 FK |
759 | /* kfd_process_device_reserve_ib_mem - Reserve memory inside the |
760 | * process for IB usage The memory reserved is for KFD to submit | |
761 | * IB to AMDGPU from kernel. If the memory is reserved | |
762 | * successfully, ib_kaddr will have the CPU/kernel | |
763 | * address. Check ib_kaddr before accessing the memory. | |
764 | */ | |
765 | static int kfd_process_device_reserve_ib_mem(struct kfd_process_device *pdd) | |
766 | { | |
767 | struct qcm_process_device *qpd = &pdd->qpd; | |
1d251d90 YZ |
768 | uint32_t flags = KFD_IOC_ALLOC_MEM_FLAGS_GTT | |
769 | KFD_IOC_ALLOC_MEM_FLAGS_NO_SUBSTITUTE | | |
770 | KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE | | |
771 | KFD_IOC_ALLOC_MEM_FLAGS_EXECUTABLE; | |
68df0f19 | 772 | struct kgd_mem *mem; |
552764b6 FK |
773 | void *kaddr; |
774 | int ret; | |
775 | ||
776 | if (qpd->ib_kaddr || !qpd->ib_base) | |
777 | return 0; | |
778 | ||
779 | /* ib_base is only set for dGPU */ | |
780 | ret = kfd_process_alloc_gpuvm(pdd, qpd->ib_base, PAGE_SIZE, flags, | |
68df0f19 | 781 | &mem, &kaddr); |
552764b6 FK |
782 | if (ret) |
783 | return ret; | |
784 | ||
68df0f19 | 785 | qpd->ib_mem = mem; |
552764b6 FK |
786 | qpd->ib_kaddr = kaddr; |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
68df0f19 LY |
791 | static void kfd_process_device_destroy_ib_mem(struct kfd_process_device *pdd) |
792 | { | |
793 | struct qcm_process_device *qpd = &pdd->qpd; | |
794 | ||
795 | if (!qpd->ib_kaddr || !qpd->ib_base) | |
796 | return; | |
797 | ||
29d48b87 | 798 | kfd_process_free_gpuvm(qpd->ib_mem, pdd, &qpd->ib_kaddr); |
68df0f19 LY |
799 | } |
800 | ||
373d7080 | 801 | struct kfd_process *kfd_create_process(struct file *filep) |
19f6d2a6 OG |
802 | { |
803 | struct kfd_process *process; | |
373d7080 | 804 | struct task_struct *thread = current; |
de9f26bb | 805 | int ret; |
19f6d2a6 | 806 | |
4eacc26b | 807 | if (!thread->mm) |
19f6d2a6 OG |
808 | return ERR_PTR(-EINVAL); |
809 | ||
810 | /* Only the pthreads threading model is supported. */ | |
811 | if (thread->group_leader->mm != thread->mm) | |
812 | return ERR_PTR(-EINVAL); | |
813 | ||
19f6d2a6 OG |
814 | /* |
815 | * take kfd processes mutex before starting of process creation | |
816 | * so there won't be a case where two threads of the same process | |
817 | * create two kfd_process structures | |
818 | */ | |
819 | mutex_lock(&kfd_processes_mutex); | |
820 | ||
821 | /* A prior open of /dev/kfd could have already created the process. */ | |
011bbb03 | 822 | process = find_process(thread, false); |
de9f26bb | 823 | if (process) { |
79775b62 | 824 | pr_debug("Process already found\n"); |
de9f26bb | 825 | } else { |
0029cab3 JG |
826 | process = create_process(thread); |
827 | if (IS_ERR(process)) | |
828 | goto out; | |
829 | ||
830 | ret = kfd_process_init_cwsr_apu(process, filep); | |
172e4ee2 FK |
831 | if (ret) |
832 | goto out_destroy; | |
19f6d2a6 | 833 | |
de9f26bb KR |
834 | if (!procfs.kobj) |
835 | goto out; | |
836 | ||
837 | process->kobj = kfd_alloc_struct(process->kobj); | |
838 | if (!process->kobj) { | |
839 | pr_warn("Creating procfs kobject failed"); | |
840 | goto out; | |
841 | } | |
842 | ret = kobject_init_and_add(process->kobj, &procfs_type, | |
843 | procfs.kobj, "%d", | |
844 | (int)process->lead_thread->pid); | |
845 | if (ret) { | |
846 | pr_warn("Creating procfs pid directory failed"); | |
dc2f832e | 847 | kobject_put(process->kobj); |
de9f26bb KR |
848 | goto out; |
849 | } | |
850 | ||
75ae84c8 PY |
851 | kfd_sysfs_create_file(process->kobj, &process->attr_pasid, |
852 | "pasid"); | |
6d220a7e AL |
853 | |
854 | process->kobj_queues = kobject_create_and_add("queues", | |
855 | process->kobj); | |
856 | if (!process->kobj_queues) | |
857 | pr_warn("Creating KFD proc/queues folder failed"); | |
d4566dee | 858 | |
75ae84c8 PY |
859 | kfd_procfs_add_sysfs_stats(process); |
860 | kfd_procfs_add_sysfs_files(process); | |
751580b3 | 861 | kfd_procfs_add_sysfs_counters(process); |
de9f26bb KR |
862 | } |
863 | out: | |
0f899fd4 FK |
864 | if (!IS_ERR(process)) |
865 | kref_get(&process->ref); | |
19f6d2a6 OG |
866 | mutex_unlock(&kfd_processes_mutex); |
867 | ||
19f6d2a6 | 868 | return process; |
172e4ee2 FK |
869 | |
870 | out_destroy: | |
871 | hash_del_rcu(&process->kfd_processes); | |
872 | mutex_unlock(&kfd_processes_mutex); | |
873 | synchronize_srcu(&kfd_processes_srcu); | |
874 | /* kfd_process_free_notifier will trigger the cleanup */ | |
875 | mmu_notifier_put(&process->mmu_notifier); | |
876 | return ERR_PTR(ret); | |
19f6d2a6 OG |
877 | } |
878 | ||
879 | struct kfd_process *kfd_get_process(const struct task_struct *thread) | |
880 | { | |
881 | struct kfd_process *process; | |
882 | ||
4eacc26b | 883 | if (!thread->mm) |
19f6d2a6 OG |
884 | return ERR_PTR(-EINVAL); |
885 | ||
886 | /* Only the pthreads threading model is supported. */ | |
887 | if (thread->group_leader->mm != thread->mm) | |
888 | return ERR_PTR(-EINVAL); | |
889 | ||
011bbb03 | 890 | process = find_process(thread, false); |
e47cb828 WL |
891 | if (!process) |
892 | return ERR_PTR(-EINVAL); | |
19f6d2a6 OG |
893 | |
894 | return process; | |
895 | } | |
896 | ||
897 | static struct kfd_process *find_process_by_mm(const struct mm_struct *mm) | |
898 | { | |
899 | struct kfd_process *process; | |
900 | ||
901 | hash_for_each_possible_rcu(kfd_processes_table, process, | |
902 | kfd_processes, (uintptr_t)mm) | |
903 | if (process->mm == mm) | |
904 | return process; | |
905 | ||
906 | return NULL; | |
907 | } | |
908 | ||
011bbb03 RB |
909 | static struct kfd_process *find_process(const struct task_struct *thread, |
910 | bool ref) | |
19f6d2a6 OG |
911 | { |
912 | struct kfd_process *p; | |
913 | int idx; | |
914 | ||
915 | idx = srcu_read_lock(&kfd_processes_srcu); | |
916 | p = find_process_by_mm(thread->mm); | |
011bbb03 RB |
917 | if (p && ref) |
918 | kref_get(&p->ref); | |
19f6d2a6 OG |
919 | srcu_read_unlock(&kfd_processes_srcu, idx); |
920 | ||
921 | return p; | |
922 | } | |
923 | ||
abb208a8 FK |
924 | void kfd_unref_process(struct kfd_process *p) |
925 | { | |
926 | kref_put(&p->ref, kfd_process_ref_release); | |
927 | } | |
928 | ||
011bbb03 RB |
929 | /* This increments the process->ref counter. */ |
930 | struct kfd_process *kfd_lookup_process_by_pid(struct pid *pid) | |
931 | { | |
932 | struct task_struct *task = NULL; | |
933 | struct kfd_process *p = NULL; | |
934 | ||
935 | if (!pid) { | |
936 | task = current; | |
937 | get_task_struct(task); | |
938 | } else { | |
939 | task = get_pid_task(pid, PIDTYPE_PID); | |
940 | } | |
941 | ||
942 | if (task) { | |
943 | p = find_process(task, true); | |
944 | put_task_struct(task); | |
945 | } | |
946 | ||
947 | return p; | |
948 | } | |
6ae27841 | 949 | |
52b29d73 FK |
950 | static void kfd_process_device_free_bos(struct kfd_process_device *pdd) |
951 | { | |
952 | struct kfd_process *p = pdd->process; | |
953 | void *mem; | |
954 | int id; | |
6ae27841 | 955 | int i; |
52b29d73 FK |
956 | |
957 | /* | |
958 | * Remove all handles from idr and release appropriate | |
959 | * local memory object | |
960 | */ | |
961 | idr_for_each_entry(&pdd->alloc_idr, mem, id) { | |
52b29d73 | 962 | |
6ae27841 AS |
963 | for (i = 0; i < p->n_pdds; i++) { |
964 | struct kfd_process_device *peer_pdd = p->pdds[i]; | |
965 | ||
b40a6ab2 | 966 | if (!peer_pdd->drm_priv) |
52b29d73 | 967 | continue; |
5b87245f | 968 | amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( |
dff63da9 | 969 | peer_pdd->dev->adev, mem, peer_pdd->drm_priv); |
52b29d73 FK |
970 | } |
971 | ||
dff63da9 | 972 | amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->adev, mem, |
d4ec4bdc | 973 | pdd->drm_priv, NULL); |
52b29d73 FK |
974 | kfd_process_device_remove_obj_handle(pdd, id); |
975 | } | |
976 | } | |
977 | ||
68df0f19 LY |
978 | /* |
979 | * Just kunmap and unpin signal BO here. It will be freed in | |
980 | * kfd_process_free_outstanding_kfd_bos() | |
981 | */ | |
982 | static void kfd_process_kunmap_signal_bo(struct kfd_process *p) | |
983 | { | |
984 | struct kfd_process_device *pdd; | |
985 | struct kfd_dev *kdev; | |
986 | void *mem; | |
987 | ||
988 | kdev = kfd_device_by_id(GET_GPU_ID(p->signal_handle)); | |
989 | if (!kdev) | |
990 | return; | |
991 | ||
992 | mutex_lock(&p->mutex); | |
993 | ||
994 | pdd = kfd_get_process_device_data(kdev, p); | |
995 | if (!pdd) | |
996 | goto out; | |
997 | ||
998 | mem = kfd_process_device_translate_handle( | |
999 | pdd, GET_IDR_HANDLE(p->signal_handle)); | |
1000 | if (!mem) | |
1001 | goto out; | |
1002 | ||
4e2d1044 | 1003 | amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel(mem); |
68df0f19 LY |
1004 | |
1005 | out: | |
1006 | mutex_unlock(&p->mutex); | |
1007 | } | |
1008 | ||
52b29d73 FK |
1009 | static void kfd_process_free_outstanding_kfd_bos(struct kfd_process *p) |
1010 | { | |
6ae27841 | 1011 | int i; |
52b29d73 | 1012 | |
6ae27841 AS |
1013 | for (i = 0; i < p->n_pdds; i++) |
1014 | kfd_process_device_free_bos(p->pdds[i]); | |
52b29d73 FK |
1015 | } |
1016 | ||
de1450a5 | 1017 | static void kfd_process_destroy_pdds(struct kfd_process *p) |
19f6d2a6 | 1018 | { |
6ae27841 AS |
1019 | int i; |
1020 | ||
1021 | for (i = 0; i < p->n_pdds; i++) { | |
1022 | struct kfd_process_device *pdd = p->pdds[i]; | |
19f6d2a6 | 1023 | |
6027b1bf | 1024 | pr_debug("Releasing pdd (topology id %d) for process (pasid 0x%x)\n", |
94a1ee09 OG |
1025 | pdd->dev->id, p->pasid); |
1026 | ||
68df0f19 LY |
1027 | kfd_process_device_destroy_cwsr_dgpu(pdd); |
1028 | kfd_process_device_destroy_ib_mem(pdd); | |
1029 | ||
bf47afba | 1030 | if (pdd->drm_file) { |
5b87245f | 1031 | amdgpu_amdkfd_gpuvm_release_process_vm( |
dff63da9 | 1032 | pdd->dev->adev, pdd->drm_priv); |
b84394e2 | 1033 | fput(pdd->drm_file); |
bf47afba | 1034 | } |
403575c4 | 1035 | |
f35751b8 | 1036 | if (pdd->qpd.cwsr_kaddr && !pdd->qpd.cwsr_base) |
373d7080 FK |
1037 | free_pages((unsigned long)pdd->qpd.cwsr_kaddr, |
1038 | get_order(KFD_CWSR_TBA_TMA_SIZE)); | |
1039 | ||
b9dd6fbd | 1040 | bitmap_free(pdd->qpd.doorbell_bitmap); |
52b29d73 FK |
1041 | idr_destroy(&pdd->alloc_idr); |
1042 | ||
59d7115d MJ |
1043 | kfd_free_process_doorbells(pdd->dev, pdd->doorbell_index); |
1044 | ||
cc009e61 MJ |
1045 | if (pdd->dev->shared_resources.enable_mes) |
1046 | amdgpu_amdkfd_free_gtt_mem(pdd->dev->adev, | |
1047 | pdd->proc_ctx_bo); | |
9593f4d6 RB |
1048 | /* |
1049 | * before destroying pdd, make sure to report availability | |
1050 | * for auto suspend | |
1051 | */ | |
1052 | if (pdd->runtime_inuse) { | |
d69a3b76 MJ |
1053 | pm_runtime_mark_last_busy(adev_to_drm(pdd->dev->adev)->dev); |
1054 | pm_runtime_put_autosuspend(adev_to_drm(pdd->dev->adev)->dev); | |
9593f4d6 RB |
1055 | pdd->runtime_inuse = false; |
1056 | } | |
1057 | ||
19f6d2a6 | 1058 | kfree(pdd); |
6ae27841 | 1059 | p->pdds[i] = NULL; |
19f6d2a6 | 1060 | } |
6ae27841 | 1061 | p->n_pdds = 0; |
de1450a5 FK |
1062 | } |
1063 | ||
751580b3 | 1064 | static void kfd_process_remove_sysfs(struct kfd_process *p) |
de1450a5 | 1065 | { |
751580b3 | 1066 | struct kfd_process_device *pdd; |
6ae27841 | 1067 | int i; |
de1450a5 | 1068 | |
751580b3 PY |
1069 | if (!p->kobj) |
1070 | return; | |
d4566dee | 1071 | |
751580b3 PY |
1072 | sysfs_remove_file(p->kobj, &p->attr_pasid); |
1073 | kobject_del(p->kobj_queues); | |
1074 | kobject_put(p->kobj_queues); | |
1075 | p->kobj_queues = NULL; | |
6ae27841 | 1076 | |
751580b3 PY |
1077 | for (i = 0; i < p->n_pdds; i++) { |
1078 | pdd = p->pdds[i]; | |
dcdb4d90 | 1079 | |
751580b3 PY |
1080 | sysfs_remove_file(p->kobj, &pdd->attr_vram); |
1081 | sysfs_remove_file(p->kobj, &pdd->attr_sdma); | |
d4566dee | 1082 | |
751580b3 PY |
1083 | sysfs_remove_file(pdd->kobj_stats, &pdd->attr_evict); |
1084 | if (pdd->dev->kfd2kgd->get_cu_occupancy) | |
1085 | sysfs_remove_file(pdd->kobj_stats, | |
1086 | &pdd->attr_cu_occupancy); | |
1087 | kobject_del(pdd->kobj_stats); | |
1088 | kobject_put(pdd->kobj_stats); | |
1089 | pdd->kobj_stats = NULL; | |
1090 | } | |
1091 | ||
1092 | for_each_set_bit(i, p->svms.bitmap_supported, p->n_pdds) { | |
1093 | pdd = p->pdds[i]; | |
1094 | ||
1095 | sysfs_remove_file(pdd->kobj_counters, &pdd->attr_faults); | |
1096 | sysfs_remove_file(pdd->kobj_counters, &pdd->attr_page_in); | |
1097 | sysfs_remove_file(pdd->kobj_counters, &pdd->attr_page_out); | |
1098 | kobject_del(pdd->kobj_counters); | |
1099 | kobject_put(pdd->kobj_counters); | |
1100 | pdd->kobj_counters = NULL; | |
de9f26bb KR |
1101 | } |
1102 | ||
751580b3 PY |
1103 | kobject_del(p->kobj); |
1104 | kobject_put(p->kobj); | |
1105 | p->kobj = NULL; | |
1106 | } | |
1107 | ||
1108 | /* No process locking is needed in this function, because the process | |
1109 | * is not findable any more. We must assume that no other thread is | |
1110 | * using it any more, otherwise we couldn't safely free the process | |
1111 | * structure in the end. | |
1112 | */ | |
1113 | static void kfd_process_wq_release(struct work_struct *work) | |
1114 | { | |
1115 | struct kfd_process *p = container_of(work, struct kfd_process, | |
1116 | release_work); | |
68df0f19 | 1117 | |
74097f9f PY |
1118 | kfd_process_dequeue_from_all_devices(p); |
1119 | pqm_uninit(&p->pqm); | |
1120 | ||
1121 | /* Signal the eviction fence after user mode queues are | |
1122 | * destroyed. This allows any BOs to be freed without | |
1123 | * triggering pointless evictions or waiting for fences. | |
1124 | */ | |
1125 | dma_fence_signal(p->ef); | |
1126 | ||
751580b3 | 1127 | kfd_process_remove_sysfs(p); |
64d1c3a4 | 1128 | kfd_iommu_unbind_process(p); |
de1450a5 | 1129 | |
68df0f19 | 1130 | kfd_process_kunmap_signal_bo(p); |
52b29d73 | 1131 | kfd_process_free_outstanding_kfd_bos(p); |
42de677f | 1132 | svm_range_list_fini(p); |
52b29d73 | 1133 | |
de1450a5 | 1134 | kfd_process_destroy_pdds(p); |
403575c4 | 1135 | dma_fence_put(p->ef); |
19f6d2a6 | 1136 | |
f3a39818 AL |
1137 | kfd_event_free_process(p); |
1138 | ||
19f6d2a6 | 1139 | kfd_pasid_free(p->pasid); |
19f6d2a6 OG |
1140 | mutex_destroy(&p->mutex); |
1141 | ||
c7b1243e FK |
1142 | put_task_struct(p->lead_thread); |
1143 | ||
19f6d2a6 | 1144 | kfree(p); |
19f6d2a6 OG |
1145 | } |
1146 | ||
5ce10687 | 1147 | static void kfd_process_ref_release(struct kref *ref) |
19f6d2a6 | 1148 | { |
5ce10687 | 1149 | struct kfd_process *p = container_of(ref, struct kfd_process, ref); |
19f6d2a6 | 1150 | |
5ce10687 FK |
1151 | INIT_WORK(&p->release_work, kfd_process_wq_release); |
1152 | queue_work(kfd_process_wq, &p->release_work); | |
1153 | } | |
19f6d2a6 | 1154 | |
3248b6d3 FK |
1155 | static struct mmu_notifier *kfd_process_alloc_notifier(struct mm_struct *mm) |
1156 | { | |
1157 | int idx = srcu_read_lock(&kfd_processes_srcu); | |
1158 | struct kfd_process *p = find_process_by_mm(mm); | |
1159 | ||
1160 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
1161 | ||
1162 | return p ? &p->mmu_notifier : ERR_PTR(-ESRCH); | |
1163 | } | |
1164 | ||
471f3902 | 1165 | static void kfd_process_free_notifier(struct mmu_notifier *mn) |
5ce10687 | 1166 | { |
471f3902 | 1167 | kfd_unref_process(container_of(mn, struct kfd_process, mmu_notifier)); |
19f6d2a6 OG |
1168 | } |
1169 | ||
1170 | static void kfd_process_notifier_release(struct mmu_notifier *mn, | |
1171 | struct mm_struct *mm) | |
1172 | { | |
1173 | struct kfd_process *p; | |
1174 | ||
1175 | /* | |
1176 | * The kfd_process structure can not be free because the | |
1177 | * mmu_notifier srcu is read locked | |
1178 | */ | |
1179 | p = container_of(mn, struct kfd_process, mmu_notifier); | |
32fa8219 FK |
1180 | if (WARN_ON(p->mm != mm)) |
1181 | return; | |
19f6d2a6 OG |
1182 | |
1183 | mutex_lock(&kfd_processes_mutex); | |
1184 | hash_del_rcu(&p->kfd_processes); | |
1185 | mutex_unlock(&kfd_processes_mutex); | |
1186 | synchronize_srcu(&kfd_processes_srcu); | |
1187 | ||
26103436 FK |
1188 | cancel_delayed_work_sync(&p->eviction_work); |
1189 | cancel_delayed_work_sync(&p->restore_work); | |
1190 | ||
5ce10687 FK |
1191 | /* Indicate to other users that MM is no longer valid */ |
1192 | p->mm = NULL; | |
45102048 | 1193 | |
471f3902 | 1194 | mmu_notifier_put(&p->mmu_notifier); |
19f6d2a6 OG |
1195 | } |
1196 | ||
1197 | static const struct mmu_notifier_ops kfd_process_mmu_notifier_ops = { | |
1198 | .release = kfd_process_notifier_release, | |
3248b6d3 | 1199 | .alloc_notifier = kfd_process_alloc_notifier, |
471f3902 | 1200 | .free_notifier = kfd_process_free_notifier, |
19f6d2a6 OG |
1201 | }; |
1202 | ||
f35751b8 | 1203 | static int kfd_process_init_cwsr_apu(struct kfd_process *p, struct file *filep) |
373d7080 | 1204 | { |
373d7080 | 1205 | unsigned long offset; |
6ae27841 | 1206 | int i; |
373d7080 | 1207 | |
6ae27841 AS |
1208 | for (i = 0; i < p->n_pdds; i++) { |
1209 | struct kfd_dev *dev = p->pdds[i]->dev; | |
1210 | struct qcm_process_device *qpd = &p->pdds[i]->qpd; | |
f35751b8 FK |
1211 | |
1212 | if (!dev->cwsr_enabled || qpd->cwsr_kaddr || qpd->cwsr_base) | |
373d7080 | 1213 | continue; |
f35751b8 | 1214 | |
29453755 | 1215 | offset = KFD_MMAP_TYPE_RESERVED_MEM | KFD_MMAP_GPU_ID(dev->id); |
373d7080 FK |
1216 | qpd->tba_addr = (int64_t)vm_mmap(filep, 0, |
1217 | KFD_CWSR_TBA_TMA_SIZE, PROT_READ | PROT_EXEC, | |
1218 | MAP_SHARED, offset); | |
1219 | ||
1220 | if (IS_ERR_VALUE(qpd->tba_addr)) { | |
c0ede1f8 YZ |
1221 | int err = qpd->tba_addr; |
1222 | ||
1223 | pr_err("Failure to set tba address. error %d.\n", err); | |
373d7080 FK |
1224 | qpd->tba_addr = 0; |
1225 | qpd->cwsr_kaddr = NULL; | |
c0ede1f8 | 1226 | return err; |
373d7080 FK |
1227 | } |
1228 | ||
1229 | memcpy(qpd->cwsr_kaddr, dev->cwsr_isa, dev->cwsr_isa_size); | |
1230 | ||
1231 | qpd->tma_addr = qpd->tba_addr + KFD_CWSR_TMA_OFFSET; | |
1232 | pr_debug("set tba :0x%llx, tma:0x%llx, cwsr_kaddr:%p for pqm.\n", | |
1233 | qpd->tba_addr, qpd->tma_addr, qpd->cwsr_kaddr); | |
1234 | } | |
c0ede1f8 YZ |
1235 | |
1236 | return 0; | |
373d7080 FK |
1237 | } |
1238 | ||
f35751b8 FK |
1239 | static int kfd_process_device_init_cwsr_dgpu(struct kfd_process_device *pdd) |
1240 | { | |
1241 | struct kfd_dev *dev = pdd->dev; | |
1242 | struct qcm_process_device *qpd = &pdd->qpd; | |
1d251d90 YZ |
1243 | uint32_t flags = KFD_IOC_ALLOC_MEM_FLAGS_GTT |
1244 | | KFD_IOC_ALLOC_MEM_FLAGS_NO_SUBSTITUTE | |
1245 | | KFD_IOC_ALLOC_MEM_FLAGS_EXECUTABLE; | |
68df0f19 | 1246 | struct kgd_mem *mem; |
f35751b8 FK |
1247 | void *kaddr; |
1248 | int ret; | |
1249 | ||
1250 | if (!dev->cwsr_enabled || qpd->cwsr_kaddr || !qpd->cwsr_base) | |
1251 | return 0; | |
1252 | ||
1253 | /* cwsr_base is only set for dGPU */ | |
1254 | ret = kfd_process_alloc_gpuvm(pdd, qpd->cwsr_base, | |
68df0f19 | 1255 | KFD_CWSR_TBA_TMA_SIZE, flags, &mem, &kaddr); |
f35751b8 FK |
1256 | if (ret) |
1257 | return ret; | |
1258 | ||
68df0f19 | 1259 | qpd->cwsr_mem = mem; |
f35751b8 FK |
1260 | qpd->cwsr_kaddr = kaddr; |
1261 | qpd->tba_addr = qpd->cwsr_base; | |
1262 | ||
1263 | memcpy(qpd->cwsr_kaddr, dev->cwsr_isa, dev->cwsr_isa_size); | |
1264 | ||
1265 | qpd->tma_addr = qpd->tba_addr + KFD_CWSR_TMA_OFFSET; | |
1266 | pr_debug("set tba :0x%llx, tma:0x%llx, cwsr_kaddr:%p for pqm.\n", | |
1267 | qpd->tba_addr, qpd->tma_addr, qpd->cwsr_kaddr); | |
1268 | ||
1269 | return 0; | |
1270 | } | |
1271 | ||
68df0f19 LY |
1272 | static void kfd_process_device_destroy_cwsr_dgpu(struct kfd_process_device *pdd) |
1273 | { | |
1274 | struct kfd_dev *dev = pdd->dev; | |
1275 | struct qcm_process_device *qpd = &pdd->qpd; | |
1276 | ||
1277 | if (!dev->cwsr_enabled || !qpd->cwsr_kaddr || !qpd->cwsr_base) | |
1278 | return; | |
1279 | ||
29d48b87 | 1280 | kfd_process_free_gpuvm(qpd->cwsr_mem, pdd, &qpd->cwsr_kaddr); |
68df0f19 LY |
1281 | } |
1282 | ||
7c9631af JC |
1283 | void kfd_process_set_trap_handler(struct qcm_process_device *qpd, |
1284 | uint64_t tba_addr, | |
1285 | uint64_t tma_addr) | |
1286 | { | |
1287 | if (qpd->cwsr_kaddr) { | |
1288 | /* KFD trap handler is bound, record as second-level TBA/TMA | |
1289 | * in first-level TMA. First-level trap will jump to second. | |
1290 | */ | |
1291 | uint64_t *tma = | |
1292 | (uint64_t *)(qpd->cwsr_kaddr + KFD_CWSR_TMA_OFFSET); | |
1293 | tma[0] = tba_addr; | |
1294 | tma[1] = tma_addr; | |
1295 | } else { | |
1296 | /* No trap handler bound, bind as first-level TBA/TMA. */ | |
1297 | qpd->tba_addr = tba_addr; | |
1298 | qpd->tma_addr = tma_addr; | |
1299 | } | |
1300 | } | |
1301 | ||
063e33c5 AS |
1302 | bool kfd_process_xnack_mode(struct kfd_process *p, bool supported) |
1303 | { | |
1304 | int i; | |
1305 | ||
1306 | /* On most GFXv9 GPUs, the retry mode in the SQ must match the | |
1307 | * boot time retry setting. Mixing processes with different | |
1308 | * XNACK/retry settings can hang the GPU. | |
1309 | * | |
1310 | * Different GPUs can have different noretry settings depending | |
1311 | * on HW bugs or limitations. We need to find at least one | |
1312 | * XNACK mode for this process that's compatible with all GPUs. | |
1313 | * Fortunately GPUs with retry enabled (noretry=0) can run code | |
1314 | * built for XNACK-off. On GFXv9 it may perform slower. | |
1315 | * | |
1316 | * Therefore applications built for XNACK-off can always be | |
1317 | * supported and will be our fallback if any GPU does not | |
1318 | * support retry. | |
1319 | */ | |
1320 | for (i = 0; i < p->n_pdds; i++) { | |
1321 | struct kfd_dev *dev = p->pdds[i]->dev; | |
1322 | ||
1323 | /* Only consider GFXv9 and higher GPUs. Older GPUs don't | |
1324 | * support the SVM APIs and don't need to be considered | |
1325 | * for the XNACK mode selection. | |
1326 | */ | |
046e674b | 1327 | if (!KFD_IS_SOC15(dev)) |
063e33c5 AS |
1328 | continue; |
1329 | /* Aldebaran can always support XNACK because it can support | |
1330 | * per-process XNACK mode selection. But let the dev->noretry | |
1331 | * setting still influence the default XNACK mode. | |
1332 | */ | |
046e674b | 1333 | if (supported && KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2)) |
063e33c5 AS |
1334 | continue; |
1335 | ||
1336 | /* GFXv10 and later GPUs do not support shader preemption | |
1337 | * during page faults. This can lead to poor QoS for queue | |
1338 | * management and memory-manager-related preemptions or | |
1339 | * even deadlocks. | |
1340 | */ | |
046e674b | 1341 | if (KFD_GC_VERSION(dev) >= IP_VERSION(10, 1, 1)) |
063e33c5 AS |
1342 | return false; |
1343 | ||
1344 | if (dev->noretry) | |
1345 | return false; | |
1346 | } | |
1347 | ||
1348 | return true; | |
1349 | } | |
1350 | ||
0029cab3 JG |
1351 | /* |
1352 | * On return the kfd_process is fully operational and will be freed when the | |
1353 | * mm is released | |
1354 | */ | |
1355 | static struct kfd_process *create_process(const struct task_struct *thread) | |
19f6d2a6 OG |
1356 | { |
1357 | struct kfd_process *process; | |
3248b6d3 | 1358 | struct mmu_notifier *mn; |
19f6d2a6 OG |
1359 | int err = -ENOMEM; |
1360 | ||
1361 | process = kzalloc(sizeof(*process), GFP_KERNEL); | |
19f6d2a6 OG |
1362 | if (!process) |
1363 | goto err_alloc_process; | |
1364 | ||
5ce10687 | 1365 | kref_init(&process->ref); |
19f6d2a6 | 1366 | mutex_init(&process->mutex); |
19f6d2a6 | 1367 | process->mm = thread->mm; |
19f6d2a6 | 1368 | process->lead_thread = thread->group_leader; |
6ae27841 | 1369 | process->n_pdds = 0; |
cd9f7910 | 1370 | process->queues_paused = false; |
0029cab3 JG |
1371 | INIT_DELAYED_WORK(&process->eviction_work, evict_process_worker); |
1372 | INIT_DELAYED_WORK(&process->restore_work, restore_process_worker); | |
1373 | process->last_restore_timestamp = get_jiffies_64(); | |
c3eb12df FK |
1374 | err = kfd_event_init_process(process); |
1375 | if (err) | |
1376 | goto err_event_init; | |
0029cab3 JG |
1377 | process->is_32bit_user_mode = in_compat_syscall(); |
1378 | ||
1379 | process->pasid = kfd_pasid_alloc(); | |
c3eb12df FK |
1380 | if (process->pasid == 0) { |
1381 | err = -ENOSPC; | |
0029cab3 | 1382 | goto err_alloc_pasid; |
c3eb12df | 1383 | } |
0029cab3 | 1384 | |
45102048 BG |
1385 | err = pqm_init(&process->pqm, process); |
1386 | if (err != 0) | |
1387 | goto err_process_pqm_init; | |
1388 | ||
dd59239a | 1389 | /* init process apertures*/ |
b312b2b2 DC |
1390 | err = kfd_init_apertures(process); |
1391 | if (err != 0) | |
7a10d63f | 1392 | goto err_init_apertures; |
dd59239a | 1393 | |
063e33c5 AS |
1394 | /* Check XNACK support after PDDs are created in kfd_init_apertures */ |
1395 | process->xnack_enabled = kfd_process_xnack_mode(process, false); | |
1396 | ||
42de677f PY |
1397 | err = svm_range_list_init(process); |
1398 | if (err) | |
1399 | goto err_init_svm_range_list; | |
1400 | ||
3248b6d3 FK |
1401 | /* alloc_notifier needs to find the process in the hash table */ |
1402 | hash_add_rcu(kfd_processes_table, &process->kfd_processes, | |
1403 | (uintptr_t)process->mm); | |
1404 | ||
0593ad21 PY |
1405 | /* Avoid free_notifier to start kfd_process_wq_release if |
1406 | * mmu_notifier_get failed because of pending signal. | |
1407 | */ | |
1408 | kref_get(&process->ref); | |
1409 | ||
3248b6d3 FK |
1410 | /* MMU notifier registration must be the last call that can fail |
1411 | * because after this point we cannot unwind the process creation. | |
1412 | * After this point, mmu_notifier_put will trigger the cleanup by | |
1413 | * dropping the last process reference in the free_notifier. | |
1414 | */ | |
1415 | mn = mmu_notifier_get(&kfd_process_mmu_notifier_ops, process->mm); | |
1416 | if (IS_ERR(mn)) { | |
1417 | err = PTR_ERR(mn); | |
0029cab3 | 1418 | goto err_register_notifier; |
3248b6d3 FK |
1419 | } |
1420 | BUG_ON(mn != &process->mmu_notifier); | |
0029cab3 | 1421 | |
0593ad21 | 1422 | kfd_unref_process(process); |
0029cab3 | 1423 | get_task_struct(process->lead_thread); |
c0ede1f8 | 1424 | |
19f6d2a6 OG |
1425 | return process; |
1426 | ||
0029cab3 | 1427 | err_register_notifier: |
3248b6d3 | 1428 | hash_del_rcu(&process->kfd_processes); |
42de677f PY |
1429 | svm_range_list_fini(process); |
1430 | err_init_svm_range_list: | |
52b29d73 | 1431 | kfd_process_free_outstanding_kfd_bos(process); |
c0ede1f8 | 1432 | kfd_process_destroy_pdds(process); |
7a10d63f | 1433 | err_init_apertures: |
dd59239a | 1434 | pqm_uninit(&process->pqm); |
45102048 | 1435 | err_process_pqm_init: |
19f6d2a6 OG |
1436 | kfd_pasid_free(process->pasid); |
1437 | err_alloc_pasid: | |
c3eb12df FK |
1438 | kfd_event_free_process(process); |
1439 | err_event_init: | |
0029cab3 | 1440 | mutex_destroy(&process->mutex); |
19f6d2a6 OG |
1441 | kfree(process); |
1442 | err_alloc_process: | |
1443 | return ERR_PTR(err); | |
1444 | } | |
1445 | ||
ef568db7 FK |
1446 | static int init_doorbell_bitmap(struct qcm_process_device *qpd, |
1447 | struct kfd_dev *dev) | |
1448 | { | |
1449 | unsigned int i; | |
89b0679b YZ |
1450 | int range_start = dev->shared_resources.non_cp_doorbells_start; |
1451 | int range_end = dev->shared_resources.non_cp_doorbells_end; | |
ef568db7 | 1452 | |
dd0ae064 | 1453 | if (!KFD_IS_SOC15(dev)) |
ef568db7 FK |
1454 | return 0; |
1455 | ||
b9dd6fbd CJ |
1456 | qpd->doorbell_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, |
1457 | GFP_KERNEL); | |
ef568db7 FK |
1458 | if (!qpd->doorbell_bitmap) |
1459 | return -ENOMEM; | |
1460 | ||
1f86805a | 1461 | /* Mask out doorbells reserved for SDMA, IH, and VCN on SOC15. */ |
89b0679b YZ |
1462 | pr_debug("reserved doorbell 0x%03x - 0x%03x\n", range_start, range_end); |
1463 | pr_debug("reserved doorbell 0x%03x - 0x%03x\n", | |
1464 | range_start + KFD_QUEUE_DOORBELL_MIRROR_OFFSET, | |
1465 | range_end + KFD_QUEUE_DOORBELL_MIRROR_OFFSET); | |
1466 | ||
1f86805a | 1467 | for (i = 0; i < KFD_MAX_NUM_OF_QUEUES_PER_PROCESS / 2; i++) { |
89b0679b | 1468 | if (i >= range_start && i <= range_end) { |
f3766830 CJ |
1469 | __set_bit(i, qpd->doorbell_bitmap); |
1470 | __set_bit(i + KFD_QUEUE_DOORBELL_MIRROR_OFFSET, | |
1471 | qpd->doorbell_bitmap); | |
ef568db7 | 1472 | } |
1f86805a | 1473 | } |
ef568db7 FK |
1474 | |
1475 | return 0; | |
1476 | } | |
1477 | ||
19f6d2a6 | 1478 | struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev, |
093c7d8c | 1479 | struct kfd_process *p) |
19f6d2a6 | 1480 | { |
6ae27841 | 1481 | int i; |
19f6d2a6 | 1482 | |
6ae27841 AS |
1483 | for (i = 0; i < p->n_pdds; i++) |
1484 | if (p->pdds[i]->dev == dev) | |
1485 | return p->pdds[i]; | |
093c7d8c | 1486 | |
733fa1f7 | 1487 | return NULL; |
093c7d8c AS |
1488 | } |
1489 | ||
1490 | struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev, | |
1491 | struct kfd_process *p) | |
1492 | { | |
1493 | struct kfd_process_device *pdd = NULL; | |
cc009e61 | 1494 | int retval = 0; |
093c7d8c | 1495 | |
6ae27841 AS |
1496 | if (WARN_ON_ONCE(p->n_pdds >= MAX_GPU_INSTANCE)) |
1497 | return NULL; | |
093c7d8c | 1498 | pdd = kzalloc(sizeof(*pdd), GFP_KERNEL); |
2d9b36f9 FK |
1499 | if (!pdd) |
1500 | return NULL; | |
1501 | ||
ef568db7 FK |
1502 | if (init_doorbell_bitmap(&pdd->qpd, dev)) { |
1503 | pr_err("Failed to init doorbell for process\n"); | |
59d7115d | 1504 | goto err_free_pdd; |
ef568db7 FK |
1505 | } |
1506 | ||
2d9b36f9 FK |
1507 | pdd->dev = dev; |
1508 | INIT_LIST_HEAD(&pdd->qpd.queues_list); | |
1509 | INIT_LIST_HEAD(&pdd->qpd.priv_queue_list); | |
1510 | pdd->qpd.dqm = dev->dqm; | |
1511 | pdd->qpd.pqm = &p->pqm; | |
26103436 | 1512 | pdd->qpd.evicted = 0; |
b8020b03 | 1513 | pdd->qpd.mapped_gws_queue = false; |
2d9b36f9 FK |
1514 | pdd->process = p; |
1515 | pdd->bound = PDD_UNBOUND; | |
1516 | pdd->already_dequeued = false; | |
9593f4d6 | 1517 | pdd->runtime_inuse = false; |
d4566dee | 1518 | pdd->vram_usage = 0; |
32cb59f3 | 1519 | pdd->sdma_past_activity_counter = 0; |
bef153b7 | 1520 | pdd->user_gpu_id = dev->id; |
4327bed2 | 1521 | atomic64_set(&pdd->evict_duration_counter, 0); |
cc009e61 MJ |
1522 | |
1523 | if (dev->shared_resources.enable_mes) { | |
1524 | retval = amdgpu_amdkfd_alloc_gtt_mem(dev->adev, | |
1525 | AMDGPU_MES_PROC_CTX_SIZE, | |
1526 | &pdd->proc_ctx_bo, | |
1527 | &pdd->proc_ctx_gpu_addr, | |
1528 | &pdd->proc_ctx_cpu_ptr, | |
1529 | false); | |
1530 | if (retval) { | |
1531 | pr_err("failed to allocate process context bo\n"); | |
1532 | goto err_free_pdd; | |
1533 | } | |
1534 | memset(pdd->proc_ctx_cpu_ptr, 0, AMDGPU_MES_PROC_CTX_SIZE); | |
1535 | } | |
1536 | ||
6ae27841 | 1537 | p->pdds[p->n_pdds++] = pdd; |
19f6d2a6 | 1538 | |
52b29d73 FK |
1539 | /* Init idr used for memory handle translation */ |
1540 | idr_init(&pdd->alloc_idr); | |
1541 | ||
b84394e2 | 1542 | return pdd; |
59d7115d MJ |
1543 | |
1544 | err_free_pdd: | |
1545 | kfree(pdd); | |
1546 | return NULL; | |
b84394e2 FK |
1547 | } |
1548 | ||
1549 | /** | |
1550 | * kfd_process_device_init_vm - Initialize a VM for a process-device | |
1551 | * | |
1552 | * @pdd: The process-device | |
1553 | * @drm_file: Optional pointer to a DRM file descriptor | |
1554 | * | |
1555 | * If @drm_file is specified, it will be used to acquire the VM from | |
1556 | * that file descriptor. If successful, the @pdd takes ownership of | |
1557 | * the file descriptor. | |
1558 | * | |
1559 | * If @drm_file is NULL, a new VM is created. | |
1560 | * | |
1561 | * Returns 0 on success, -errno on failure. | |
1562 | */ | |
1563 | int kfd_process_device_init_vm(struct kfd_process_device *pdd, | |
1564 | struct file *drm_file) | |
1565 | { | |
1566 | struct kfd_process *p; | |
1567 | struct kfd_dev *dev; | |
1568 | int ret; | |
1569 | ||
f45e6b9d FK |
1570 | if (!drm_file) |
1571 | return -EINVAL; | |
1572 | ||
b40a6ab2 | 1573 | if (pdd->drm_priv) |
f45e6b9d | 1574 | return -EBUSY; |
b84394e2 FK |
1575 | |
1576 | p = pdd->process; | |
1577 | dev = pdd->dev; | |
1578 | ||
1a799c4c PY |
1579 | ret = amdgpu_amdkfd_gpuvm_acquire_process_vm(dev->adev, drm_file, |
1580 | &p->kgd_process_info, | |
1581 | &p->ef); | |
b84394e2 | 1582 | if (ret) { |
403575c4 | 1583 | pr_err("Failed to create process VM object\n"); |
b84394e2 | 1584 | return ret; |
403575c4 | 1585 | } |
b40a6ab2 | 1586 | pdd->drm_priv = drm_file->private_data; |
8fde0248 | 1587 | atomic64_set(&pdd->tlb_seq, 0); |
f40c6912 | 1588 | |
552764b6 FK |
1589 | ret = kfd_process_device_reserve_ib_mem(pdd); |
1590 | if (ret) | |
1591 | goto err_reserve_ib_mem; | |
f35751b8 FK |
1592 | ret = kfd_process_device_init_cwsr_dgpu(pdd); |
1593 | if (ret) | |
1594 | goto err_init_cwsr; | |
1595 | ||
1a799c4c PY |
1596 | ret = amdgpu_amdkfd_gpuvm_set_vm_pasid(dev->adev, drm_file, p->pasid); |
1597 | if (ret) | |
1598 | goto err_set_pasid; | |
1599 | ||
b84394e2 FK |
1600 | pdd->drm_file = drm_file; |
1601 | ||
1602 | return 0; | |
f35751b8 | 1603 | |
1a799c4c PY |
1604 | err_set_pasid: |
1605 | kfd_process_device_destroy_cwsr_dgpu(pdd); | |
f35751b8 | 1606 | err_init_cwsr: |
29d48b87 | 1607 | kfd_process_device_destroy_ib_mem(pdd); |
552764b6 | 1608 | err_reserve_ib_mem: |
b40a6ab2 | 1609 | pdd->drm_priv = NULL; |
f35751b8 FK |
1610 | |
1611 | return ret; | |
19f6d2a6 OG |
1612 | } |
1613 | ||
1614 | /* | |
1615 | * Direct the IOMMU to bind the process (specifically the pasid->mm) | |
1616 | * to the device. | |
1617 | * Unbinding occurs when the process dies or the device is removed. | |
1618 | * | |
1619 | * Assumes that the process lock is held. | |
1620 | */ | |
1621 | struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev, | |
1622 | struct kfd_process *p) | |
1623 | { | |
093c7d8c | 1624 | struct kfd_process_device *pdd; |
b17f068a | 1625 | int err; |
19f6d2a6 | 1626 | |
093c7d8c AS |
1627 | pdd = kfd_get_process_device_data(dev, p); |
1628 | if (!pdd) { | |
1629 | pr_err("Process device data doesn't exist\n"); | |
19f6d2a6 | 1630 | return ERR_PTR(-ENOMEM); |
093c7d8c | 1631 | } |
19f6d2a6 | 1632 | |
b40a6ab2 | 1633 | if (!pdd->drm_priv) |
f45e6b9d FK |
1634 | return ERR_PTR(-ENODEV); |
1635 | ||
9593f4d6 RB |
1636 | /* |
1637 | * signal runtime-pm system to auto resume and prevent | |
1638 | * further runtime suspend once device pdd is created until | |
1639 | * pdd is destroyed. | |
1640 | */ | |
1641 | if (!pdd->runtime_inuse) { | |
d69a3b76 | 1642 | err = pm_runtime_get_sync(adev_to_drm(dev->adev)->dev); |
1c1ada37 | 1643 | if (err < 0) { |
d69a3b76 | 1644 | pm_runtime_put_autosuspend(adev_to_drm(dev->adev)->dev); |
9593f4d6 | 1645 | return ERR_PTR(err); |
1c1ada37 | 1646 | } |
9593f4d6 RB |
1647 | } |
1648 | ||
64d1c3a4 FK |
1649 | err = kfd_iommu_bind_process_to_device(pdd); |
1650 | if (err) | |
9593f4d6 | 1651 | goto out; |
b17f068a | 1652 | |
9593f4d6 RB |
1653 | /* |
1654 | * make sure that runtime_usage counter is incremented just once | |
1655 | * per pdd | |
1656 | */ | |
1657 | pdd->runtime_inuse = true; | |
b84394e2 | 1658 | |
19f6d2a6 | 1659 | return pdd; |
9593f4d6 RB |
1660 | |
1661 | out: | |
1662 | /* balance runpm reference count and exit with error */ | |
1663 | if (!pdd->runtime_inuse) { | |
d69a3b76 MJ |
1664 | pm_runtime_mark_last_busy(adev_to_drm(dev->adev)->dev); |
1665 | pm_runtime_put_autosuspend(adev_to_drm(dev->adev)->dev); | |
9593f4d6 RB |
1666 | } |
1667 | ||
1668 | return ERR_PTR(err); | |
19f6d2a6 OG |
1669 | } |
1670 | ||
52b29d73 FK |
1671 | /* Create specific handle mapped to mem from process local memory idr |
1672 | * Assumes that the process lock is held. | |
1673 | */ | |
1674 | int kfd_process_device_create_obj_handle(struct kfd_process_device *pdd, | |
1675 | void *mem) | |
1676 | { | |
1677 | return idr_alloc(&pdd->alloc_idr, mem, 0, 0, GFP_KERNEL); | |
1678 | } | |
1679 | ||
1680 | /* Translate specific handle from process local memory idr | |
1681 | * Assumes that the process lock is held. | |
1682 | */ | |
1683 | void *kfd_process_device_translate_handle(struct kfd_process_device *pdd, | |
1684 | int handle) | |
1685 | { | |
1686 | if (handle < 0) | |
1687 | return NULL; | |
1688 | ||
1689 | return idr_find(&pdd->alloc_idr, handle); | |
1690 | } | |
1691 | ||
1692 | /* Remove specific handle from process local memory idr | |
1693 | * Assumes that the process lock is held. | |
1694 | */ | |
1695 | void kfd_process_device_remove_obj_handle(struct kfd_process_device *pdd, | |
1696 | int handle) | |
1697 | { | |
1698 | if (handle >= 0) | |
1699 | idr_remove(&pdd->alloc_idr, handle); | |
1700 | } | |
1701 | ||
abb208a8 | 1702 | /* This increments the process->ref counter. */ |
c7b6bac9 | 1703 | struct kfd_process *kfd_lookup_process_by_pasid(u32 pasid) |
f3a39818 | 1704 | { |
82c16b42 | 1705 | struct kfd_process *p, *ret_p = NULL; |
f3a39818 AL |
1706 | unsigned int temp; |
1707 | ||
1708 | int idx = srcu_read_lock(&kfd_processes_srcu); | |
1709 | ||
1710 | hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { | |
1711 | if (p->pasid == pasid) { | |
abb208a8 | 1712 | kref_get(&p->ref); |
82c16b42 | 1713 | ret_p = p; |
f3a39818 AL |
1714 | break; |
1715 | } | |
1716 | } | |
1717 | ||
1718 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
1719 | ||
82c16b42 | 1720 | return ret_p; |
f3a39818 | 1721 | } |
373d7080 | 1722 | |
26103436 FK |
1723 | /* This increments the process->ref counter. */ |
1724 | struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm) | |
1725 | { | |
1726 | struct kfd_process *p; | |
1727 | ||
1728 | int idx = srcu_read_lock(&kfd_processes_srcu); | |
1729 | ||
1730 | p = find_process_by_mm(mm); | |
1731 | if (p) | |
1732 | kref_get(&p->ref); | |
1733 | ||
1734 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
1735 | ||
1736 | return p; | |
1737 | } | |
1738 | ||
0aeaaf64 | 1739 | /* kfd_process_evict_queues - Evict all user queues of a process |
26103436 FK |
1740 | * |
1741 | * Eviction is reference-counted per process-device. This means multiple | |
1742 | * evictions from different sources can be nested safely. | |
1743 | */ | |
c7f21978 | 1744 | int kfd_process_evict_queues(struct kfd_process *p, uint32_t trigger) |
26103436 | 1745 | { |
26103436 | 1746 | int r = 0; |
6ae27841 | 1747 | int i; |
26103436 FK |
1748 | unsigned int n_evicted = 0; |
1749 | ||
6ae27841 AS |
1750 | for (i = 0; i < p->n_pdds; i++) { |
1751 | struct kfd_process_device *pdd = p->pdds[i]; | |
1752 | ||
c7f21978 PY |
1753 | kfd_smi_event_queue_eviction(pdd->dev, p->lead_thread->pid, |
1754 | trigger); | |
1755 | ||
26103436 FK |
1756 | r = pdd->dev->dqm->ops.evict_process_queues(pdd->dev->dqm, |
1757 | &pdd->qpd); | |
b8c20c74 | 1758 | /* evict return -EIO if HWS is hang or asic is resetting, in this case |
1759 | * we would like to set all the queues to be in evicted state to prevent | |
1760 | * them been add back since they actually not be saved right now. | |
1761 | */ | |
1762 | if (r && r != -EIO) { | |
26103436 FK |
1763 | pr_err("Failed to evict process queues\n"); |
1764 | goto fail; | |
1765 | } | |
1766 | n_evicted++; | |
1767 | } | |
1768 | ||
1769 | return r; | |
1770 | ||
1771 | fail: | |
1772 | /* To keep state consistent, roll back partial eviction by | |
1773 | * restoring queues | |
1774 | */ | |
6ae27841 AS |
1775 | for (i = 0; i < p->n_pdds; i++) { |
1776 | struct kfd_process_device *pdd = p->pdds[i]; | |
1777 | ||
26103436 FK |
1778 | if (n_evicted == 0) |
1779 | break; | |
c7f21978 PY |
1780 | |
1781 | kfd_smi_event_queue_restore(pdd->dev, p->lead_thread->pid); | |
1782 | ||
26103436 FK |
1783 | if (pdd->dev->dqm->ops.restore_process_queues(pdd->dev->dqm, |
1784 | &pdd->qpd)) | |
1785 | pr_err("Failed to restore queues\n"); | |
1786 | ||
1787 | n_evicted--; | |
1788 | } | |
1789 | ||
1790 | return r; | |
1791 | } | |
1792 | ||
0aeaaf64 | 1793 | /* kfd_process_restore_queues - Restore all user queues of a process */ |
6b95e797 | 1794 | int kfd_process_restore_queues(struct kfd_process *p) |
26103436 | 1795 | { |
26103436 | 1796 | int r, ret = 0; |
6ae27841 AS |
1797 | int i; |
1798 | ||
1799 | for (i = 0; i < p->n_pdds; i++) { | |
1800 | struct kfd_process_device *pdd = p->pdds[i]; | |
26103436 | 1801 | |
c7f21978 PY |
1802 | kfd_smi_event_queue_restore(pdd->dev, p->lead_thread->pid); |
1803 | ||
26103436 FK |
1804 | r = pdd->dev->dqm->ops.restore_process_queues(pdd->dev->dqm, |
1805 | &pdd->qpd); | |
1806 | if (r) { | |
1807 | pr_err("Failed to restore process queues\n"); | |
1808 | if (!ret) | |
1809 | ret = r; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | return ret; | |
1814 | } | |
1815 | ||
2aeb742b AS |
1816 | int kfd_process_gpuidx_from_gpuid(struct kfd_process *p, uint32_t gpu_id) |
1817 | { | |
1818 | int i; | |
1819 | ||
1820 | for (i = 0; i < p->n_pdds; i++) | |
d763d803 | 1821 | if (p->pdds[i] && gpu_id == p->pdds[i]->user_gpu_id) |
2aeb742b AS |
1822 | return i; |
1823 | return -EINVAL; | |
1824 | } | |
1825 | ||
cda0f85b | 1826 | int |
56c5977e | 1827 | kfd_process_gpuid_from_adev(struct kfd_process *p, struct amdgpu_device *adev, |
cda0f85b FK |
1828 | uint32_t *gpuid, uint32_t *gpuidx) |
1829 | { | |
cda0f85b FK |
1830 | int i; |
1831 | ||
1832 | for (i = 0; i < p->n_pdds; i++) | |
56c5977e | 1833 | if (p->pdds[i] && p->pdds[i]->dev->adev == adev) { |
d763d803 | 1834 | *gpuid = p->pdds[i]->user_gpu_id; |
cda0f85b FK |
1835 | *gpuidx = i; |
1836 | return 0; | |
1837 | } | |
1838 | return -EINVAL; | |
1839 | } | |
1840 | ||
26103436 FK |
1841 | static void evict_process_worker(struct work_struct *work) |
1842 | { | |
1843 | int ret; | |
1844 | struct kfd_process *p; | |
1845 | struct delayed_work *dwork; | |
1846 | ||
1847 | dwork = to_delayed_work(work); | |
1848 | ||
1849 | /* Process termination destroys this worker thread. So during the | |
1850 | * lifetime of this thread, kfd_process p will be valid | |
1851 | */ | |
1852 | p = container_of(dwork, struct kfd_process, eviction_work); | |
1853 | WARN_ONCE(p->last_eviction_seqno != p->ef->seqno, | |
1854 | "Eviction fence mismatch\n"); | |
1855 | ||
1856 | /* Narrow window of overlap between restore and evict work | |
1857 | * item is possible. Once amdgpu_amdkfd_gpuvm_restore_process_bos | |
1858 | * unreserves KFD BOs, it is possible to evicted again. But | |
1859 | * restore has few more steps of finish. So lets wait for any | |
1860 | * previous restore work to complete | |
1861 | */ | |
1862 | flush_delayed_work(&p->restore_work); | |
1863 | ||
6027b1bf | 1864 | pr_debug("Started evicting pasid 0x%x\n", p->pasid); |
c7f21978 | 1865 | ret = kfd_process_evict_queues(p, KFD_QUEUE_EVICTION_TRIGGER_TTM); |
26103436 FK |
1866 | if (!ret) { |
1867 | dma_fence_signal(p->ef); | |
1868 | dma_fence_put(p->ef); | |
1869 | p->ef = NULL; | |
1679ae8f | 1870 | queue_delayed_work(kfd_restore_wq, &p->restore_work, |
26103436 FK |
1871 | msecs_to_jiffies(PROCESS_RESTORE_TIME_MS)); |
1872 | ||
6027b1bf | 1873 | pr_debug("Finished evicting pasid 0x%x\n", p->pasid); |
26103436 | 1874 | } else |
6027b1bf | 1875 | pr_err("Failed to evict queues of pasid 0x%x\n", p->pasid); |
26103436 FK |
1876 | } |
1877 | ||
1878 | static void restore_process_worker(struct work_struct *work) | |
1879 | { | |
1880 | struct delayed_work *dwork; | |
1881 | struct kfd_process *p; | |
26103436 FK |
1882 | int ret = 0; |
1883 | ||
1884 | dwork = to_delayed_work(work); | |
1885 | ||
1886 | /* Process termination destroys this worker thread. So during the | |
1887 | * lifetime of this thread, kfd_process p will be valid | |
1888 | */ | |
1889 | p = container_of(dwork, struct kfd_process, restore_work); | |
6027b1bf | 1890 | pr_debug("Started restoring pasid 0x%x\n", p->pasid); |
26103436 FK |
1891 | |
1892 | /* Setting last_restore_timestamp before successful restoration. | |
1893 | * Otherwise this would have to be set by KGD (restore_process_bos) | |
1894 | * before KFD BOs are unreserved. If not, the process can be evicted | |
1895 | * again before the timestamp is set. | |
1896 | * If restore fails, the timestamp will be set again in the next | |
1897 | * attempt. This would mean that the minimum GPU quanta would be | |
1898 | * PROCESS_ACTIVE_TIME_MS - (time to execute the following two | |
1899 | * functions) | |
1900 | */ | |
1901 | ||
1902 | p->last_restore_timestamp = get_jiffies_64(); | |
5b87245f | 1903 | ret = amdgpu_amdkfd_gpuvm_restore_process_bos(p->kgd_process_info, |
26103436 FK |
1904 | &p->ef); |
1905 | if (ret) { | |
6027b1bf | 1906 | pr_debug("Failed to restore BOs of pasid 0x%x, retry after %d ms\n", |
26103436 | 1907 | p->pasid, PROCESS_BACK_OFF_TIME_MS); |
1679ae8f | 1908 | ret = queue_delayed_work(kfd_restore_wq, &p->restore_work, |
26103436 FK |
1909 | msecs_to_jiffies(PROCESS_BACK_OFF_TIME_MS)); |
1910 | WARN(!ret, "reschedule restore work failed\n"); | |
1911 | return; | |
1912 | } | |
1913 | ||
6b95e797 | 1914 | ret = kfd_process_restore_queues(p); |
26103436 | 1915 | if (!ret) |
6027b1bf | 1916 | pr_debug("Finished restoring pasid 0x%x\n", p->pasid); |
26103436 | 1917 | else |
6027b1bf | 1918 | pr_err("Failed to restore queues of pasid 0x%x\n", p->pasid); |
26103436 FK |
1919 | } |
1920 | ||
1921 | void kfd_suspend_all_processes(void) | |
1922 | { | |
1923 | struct kfd_process *p; | |
1924 | unsigned int temp; | |
1925 | int idx = srcu_read_lock(&kfd_processes_srcu); | |
1926 | ||
8a491bb3 | 1927 | WARN(debug_evictions, "Evicting all processes"); |
26103436 FK |
1928 | hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { |
1929 | cancel_delayed_work_sync(&p->eviction_work); | |
1930 | cancel_delayed_work_sync(&p->restore_work); | |
1931 | ||
c7f21978 | 1932 | if (kfd_process_evict_queues(p, KFD_QUEUE_EVICTION_TRIGGER_SUSPEND)) |
6027b1bf | 1933 | pr_err("Failed to suspend process 0x%x\n", p->pasid); |
26103436 FK |
1934 | dma_fence_signal(p->ef); |
1935 | dma_fence_put(p->ef); | |
1936 | p->ef = NULL; | |
1937 | } | |
1938 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
1939 | } | |
1940 | ||
1941 | int kfd_resume_all_processes(void) | |
1942 | { | |
1943 | struct kfd_process *p; | |
1944 | unsigned int temp; | |
1945 | int ret = 0, idx = srcu_read_lock(&kfd_processes_srcu); | |
1946 | ||
1947 | hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { | |
1679ae8f | 1948 | if (!queue_delayed_work(kfd_restore_wq, &p->restore_work, 0)) { |
26103436 FK |
1949 | pr_err("Restore process %d failed during resume\n", |
1950 | p->pasid); | |
1951 | ret = -EFAULT; | |
1952 | } | |
1953 | } | |
1954 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
1955 | return ret; | |
1956 | } | |
1957 | ||
df03ef93 | 1958 | int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process, |
373d7080 FK |
1959 | struct vm_area_struct *vma) |
1960 | { | |
373d7080 FK |
1961 | struct kfd_process_device *pdd; |
1962 | struct qcm_process_device *qpd; | |
1963 | ||
373d7080 FK |
1964 | if ((vma->vm_end - vma->vm_start) != KFD_CWSR_TBA_TMA_SIZE) { |
1965 | pr_err("Incorrect CWSR mapping size.\n"); | |
1966 | return -EINVAL; | |
1967 | } | |
1968 | ||
1969 | pdd = kfd_get_process_device_data(dev, process); | |
1970 | if (!pdd) | |
1971 | return -EINVAL; | |
1972 | qpd = &pdd->qpd; | |
1973 | ||
1974 | qpd->cwsr_kaddr = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, | |
1975 | get_order(KFD_CWSR_TBA_TMA_SIZE)); | |
1976 | if (!qpd->cwsr_kaddr) { | |
1977 | pr_err("Error allocating per process CWSR buffer.\n"); | |
1978 | return -ENOMEM; | |
1979 | } | |
1980 | ||
1c71222e SB |
1981 | vm_flags_set(vma, VM_IO | VM_DONTCOPY | VM_DONTEXPAND |
1982 | | VM_NORESERVE | VM_DONTDUMP | VM_PFNMAP); | |
373d7080 FK |
1983 | /* Mapping pages to user process */ |
1984 | return remap_pfn_range(vma, vma->vm_start, | |
1985 | PFN_DOWN(__pa(qpd->cwsr_kaddr)), | |
1986 | KFD_CWSR_TBA_TMA_SIZE, vma->vm_page_prot); | |
1987 | } | |
851a645e | 1988 | |
3543b055 | 1989 | void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type) |
403575c4 | 1990 | { |
bffa91da CK |
1991 | struct amdgpu_vm *vm = drm_priv_to_vm(pdd->drm_priv); |
1992 | uint64_t tlb_seq = amdgpu_vm_tlb_seq(vm); | |
403575c4 | 1993 | struct kfd_dev *dev = pdd->dev; |
403575c4 | 1994 | |
8fde0248 PY |
1995 | /* |
1996 | * It can be that we race and lose here, but that is extremely unlikely | |
1997 | * and the worst thing which could happen is that we flush the changes | |
1998 | * into the TLB once more which is harmless. | |
1999 | */ | |
2000 | if (atomic64_xchg(&pdd->tlb_seq, tlb_seq) == tlb_seq) | |
bffa91da CK |
2001 | return; |
2002 | ||
403575c4 FK |
2003 | if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { |
2004 | /* Nothing to flush until a VMID is assigned, which | |
2005 | * only happens when the first queue is created. | |
2006 | */ | |
2007 | if (pdd->qpd.vmid) | |
6bfc7c7e | 2008 | amdgpu_amdkfd_flush_gpu_tlb_vmid(dev->adev, |
ffa02269 | 2009 | pdd->qpd.vmid); |
403575c4 | 2010 | } else { |
6bfc7c7e | 2011 | amdgpu_amdkfd_flush_gpu_tlb_pasid(dev->adev, |
3543b055 | 2012 | pdd->process->pasid, type); |
403575c4 FK |
2013 | } |
2014 | } | |
2015 | ||
bef153b7 DYS |
2016 | struct kfd_process_device *kfd_process_device_data_by_id(struct kfd_process *p, uint32_t gpu_id) |
2017 | { | |
2018 | int i; | |
2019 | ||
2020 | if (gpu_id) { | |
2021 | for (i = 0; i < p->n_pdds; i++) { | |
2022 | struct kfd_process_device *pdd = p->pdds[i]; | |
2023 | ||
2024 | if (pdd->user_gpu_id == gpu_id) | |
2025 | return pdd; | |
2026 | } | |
2027 | } | |
2028 | return NULL; | |
2029 | } | |
2030 | ||
2031 | int kfd_process_get_user_gpu_id(struct kfd_process *p, uint32_t actual_gpu_id) | |
2032 | { | |
2033 | int i; | |
2034 | ||
2035 | if (!actual_gpu_id) | |
2036 | return 0; | |
2037 | ||
2038 | for (i = 0; i < p->n_pdds; i++) { | |
2039 | struct kfd_process_device *pdd = p->pdds[i]; | |
2040 | ||
2041 | if (pdd->dev->id == actual_gpu_id) | |
2042 | return pdd->user_gpu_id; | |
2043 | } | |
2044 | return -EINVAL; | |
2045 | } | |
2046 | ||
851a645e FK |
2047 | #if defined(CONFIG_DEBUG_FS) |
2048 | ||
2049 | int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data) | |
2050 | { | |
2051 | struct kfd_process *p; | |
2052 | unsigned int temp; | |
2053 | int r = 0; | |
2054 | ||
2055 | int idx = srcu_read_lock(&kfd_processes_srcu); | |
2056 | ||
2057 | hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { | |
6027b1bf | 2058 | seq_printf(m, "Process %d PASID 0x%x:\n", |
851a645e FK |
2059 | p->lead_thread->tgid, p->pasid); |
2060 | ||
2061 | mutex_lock(&p->mutex); | |
2062 | r = pqm_debugfs_mqds(m, &p->pqm); | |
2063 | mutex_unlock(&p->mutex); | |
2064 | ||
2065 | if (r) | |
2066 | break; | |
2067 | } | |
2068 | ||
2069 | srcu_read_unlock(&kfd_processes_srcu, idx); | |
2070 | ||
2071 | return r; | |
2072 | } | |
2073 | ||
2074 | #endif | |
14328aa5 | 2075 |