1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* Copyright(c) 2019 Intel Corporation. All rights rsvd. */ |
3 | #include <linux/init.h> |
4 | #include <linux/kernel.h> |
5 | #include <linux/module.h> |
6 | #include <linux/pci.h> |
7 | #include <linux/device.h> |
8 | #include <linux/io-64-nonatomic-lo-hi.h> |
9 | #include <uapi/linux/idxd.h> |
10 | #include "registers.h" |
11 | #include "idxd.h" |
12 | |
13 | static char *idxd_wq_type_names[] = { |
14 | [IDXD_WQT_NONE] = "none" , |
15 | [IDXD_WQT_KERNEL] = "kernel" , |
16 | [IDXD_WQT_USER] = "user" , |
17 | }; |
18 | |
19 | /* IDXD engine attributes */ |
20 | static ssize_t engine_group_id_show(struct device *dev, |
21 | struct device_attribute *attr, char *buf) |
22 | { |
23 | struct idxd_engine *engine = confdev_to_engine(dev); |
24 | |
25 | if (engine->group) |
26 | return sysfs_emit(buf, fmt: "%d\n" , engine->group->id); |
27 | else |
28 | return sysfs_emit(buf, fmt: "%d\n" , -1); |
29 | } |
30 | |
31 | static ssize_t engine_group_id_store(struct device *dev, |
32 | struct device_attribute *attr, |
33 | const char *buf, size_t count) |
34 | { |
35 | struct idxd_engine *engine = confdev_to_engine(dev); |
36 | struct idxd_device *idxd = engine->idxd; |
37 | long id; |
38 | int rc; |
39 | struct idxd_group *prevg; |
40 | |
41 | rc = kstrtol(s: buf, base: 10, res: &id); |
42 | if (rc < 0) |
43 | return -EINVAL; |
44 | |
45 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
46 | return -EPERM; |
47 | |
48 | if (id > idxd->max_groups - 1 || id < -1) |
49 | return -EINVAL; |
50 | |
51 | if (id == -1) { |
52 | if (engine->group) { |
53 | engine->group->num_engines--; |
54 | engine->group = NULL; |
55 | } |
56 | return count; |
57 | } |
58 | |
59 | prevg = engine->group; |
60 | |
61 | if (prevg) |
62 | prevg->num_engines--; |
63 | engine->group = idxd->groups[id]; |
64 | engine->group->num_engines++; |
65 | |
66 | return count; |
67 | } |
68 | |
69 | static struct device_attribute dev_attr_engine_group = |
70 | __ATTR(group_id, 0644, engine_group_id_show, |
71 | engine_group_id_store); |
72 | |
73 | static struct attribute *idxd_engine_attributes[] = { |
74 | &dev_attr_engine_group.attr, |
75 | NULL, |
76 | }; |
77 | |
78 | static const struct attribute_group idxd_engine_attribute_group = { |
79 | .attrs = idxd_engine_attributes, |
80 | }; |
81 | |
82 | static const struct attribute_group *idxd_engine_attribute_groups[] = { |
83 | &idxd_engine_attribute_group, |
84 | NULL, |
85 | }; |
86 | |
87 | static void idxd_conf_engine_release(struct device *dev) |
88 | { |
89 | struct idxd_engine *engine = confdev_to_engine(dev); |
90 | |
91 | kfree(objp: engine); |
92 | } |
93 | |
94 | const struct device_type idxd_engine_device_type = { |
95 | .name = "engine" , |
96 | .release = idxd_conf_engine_release, |
97 | .groups = idxd_engine_attribute_groups, |
98 | }; |
99 | |
100 | /* Group attributes */ |
101 | |
102 | static void idxd_set_free_rdbufs(struct idxd_device *idxd) |
103 | { |
104 | int i, rdbufs; |
105 | |
106 | for (i = 0, rdbufs = 0; i < idxd->max_groups; i++) { |
107 | struct idxd_group *g = idxd->groups[i]; |
108 | |
109 | rdbufs += g->rdbufs_reserved; |
110 | } |
111 | |
112 | idxd->nr_rdbufs = idxd->max_rdbufs - rdbufs; |
113 | } |
114 | |
115 | static ssize_t group_read_buffers_reserved_show(struct device *dev, |
116 | struct device_attribute *attr, |
117 | char *buf) |
118 | { |
119 | struct idxd_group *group = confdev_to_group(dev); |
120 | |
121 | return sysfs_emit(buf, fmt: "%u\n" , group->rdbufs_reserved); |
122 | } |
123 | |
124 | static ssize_t group_tokens_reserved_show(struct device *dev, |
125 | struct device_attribute *attr, |
126 | char *buf) |
127 | { |
128 | dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n" ); |
129 | return group_read_buffers_reserved_show(dev, attr, buf); |
130 | } |
131 | |
132 | static ssize_t group_read_buffers_reserved_store(struct device *dev, |
133 | struct device_attribute *attr, |
134 | const char *buf, size_t count) |
135 | { |
136 | struct idxd_group *group = confdev_to_group(dev); |
137 | struct idxd_device *idxd = group->idxd; |
138 | unsigned long val; |
139 | int rc; |
140 | |
141 | rc = kstrtoul(s: buf, base: 10, res: &val); |
142 | if (rc < 0) |
143 | return -EINVAL; |
144 | |
145 | if (idxd->data->type == IDXD_TYPE_IAX) |
146 | return -EOPNOTSUPP; |
147 | |
148 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
149 | return -EPERM; |
150 | |
151 | if (idxd->state == IDXD_DEV_ENABLED) |
152 | return -EPERM; |
153 | |
154 | if (val > idxd->max_rdbufs) |
155 | return -EINVAL; |
156 | |
157 | if (val > idxd->nr_rdbufs + group->rdbufs_reserved) |
158 | return -EINVAL; |
159 | |
160 | group->rdbufs_reserved = val; |
161 | idxd_set_free_rdbufs(idxd); |
162 | return count; |
163 | } |
164 | |
165 | static ssize_t group_tokens_reserved_store(struct device *dev, |
166 | struct device_attribute *attr, |
167 | const char *buf, size_t count) |
168 | { |
169 | dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n" ); |
170 | return group_read_buffers_reserved_store(dev, attr, buf, count); |
171 | } |
172 | |
173 | static struct device_attribute dev_attr_group_tokens_reserved = |
174 | __ATTR(tokens_reserved, 0644, group_tokens_reserved_show, |
175 | group_tokens_reserved_store); |
176 | |
177 | static struct device_attribute dev_attr_group_read_buffers_reserved = |
178 | __ATTR(read_buffers_reserved, 0644, group_read_buffers_reserved_show, |
179 | group_read_buffers_reserved_store); |
180 | |
181 | static ssize_t group_read_buffers_allowed_show(struct device *dev, |
182 | struct device_attribute *attr, |
183 | char *buf) |
184 | { |
185 | struct idxd_group *group = confdev_to_group(dev); |
186 | |
187 | return sysfs_emit(buf, fmt: "%u\n" , group->rdbufs_allowed); |
188 | } |
189 | |
190 | static ssize_t group_tokens_allowed_show(struct device *dev, |
191 | struct device_attribute *attr, |
192 | char *buf) |
193 | { |
194 | dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n" ); |
195 | return group_read_buffers_allowed_show(dev, attr, buf); |
196 | } |
197 | |
198 | static ssize_t group_read_buffers_allowed_store(struct device *dev, |
199 | struct device_attribute *attr, |
200 | const char *buf, size_t count) |
201 | { |
202 | struct idxd_group *group = confdev_to_group(dev); |
203 | struct idxd_device *idxd = group->idxd; |
204 | unsigned long val; |
205 | int rc; |
206 | |
207 | rc = kstrtoul(s: buf, base: 10, res: &val); |
208 | if (rc < 0) |
209 | return -EINVAL; |
210 | |
211 | if (idxd->data->type == IDXD_TYPE_IAX) |
212 | return -EOPNOTSUPP; |
213 | |
214 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
215 | return -EPERM; |
216 | |
217 | if (idxd->state == IDXD_DEV_ENABLED) |
218 | return -EPERM; |
219 | |
220 | if (val < 4 * group->num_engines || |
221 | val > group->rdbufs_reserved + idxd->nr_rdbufs) |
222 | return -EINVAL; |
223 | |
224 | group->rdbufs_allowed = val; |
225 | return count; |
226 | } |
227 | |
228 | static ssize_t group_tokens_allowed_store(struct device *dev, |
229 | struct device_attribute *attr, |
230 | const char *buf, size_t count) |
231 | { |
232 | dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n" ); |
233 | return group_read_buffers_allowed_store(dev, attr, buf, count); |
234 | } |
235 | |
236 | static struct device_attribute dev_attr_group_tokens_allowed = |
237 | __ATTR(tokens_allowed, 0644, group_tokens_allowed_show, |
238 | group_tokens_allowed_store); |
239 | |
240 | static struct device_attribute dev_attr_group_read_buffers_allowed = |
241 | __ATTR(read_buffers_allowed, 0644, group_read_buffers_allowed_show, |
242 | group_read_buffers_allowed_store); |
243 | |
244 | static ssize_t group_use_read_buffer_limit_show(struct device *dev, |
245 | struct device_attribute *attr, |
246 | char *buf) |
247 | { |
248 | struct idxd_group *group = confdev_to_group(dev); |
249 | |
250 | return sysfs_emit(buf, fmt: "%u\n" , group->use_rdbuf_limit); |
251 | } |
252 | |
253 | static ssize_t group_use_token_limit_show(struct device *dev, |
254 | struct device_attribute *attr, |
255 | char *buf) |
256 | { |
257 | dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n" ); |
258 | return group_use_read_buffer_limit_show(dev, attr, buf); |
259 | } |
260 | |
261 | static ssize_t group_use_read_buffer_limit_store(struct device *dev, |
262 | struct device_attribute *attr, |
263 | const char *buf, size_t count) |
264 | { |
265 | struct idxd_group *group = confdev_to_group(dev); |
266 | struct idxd_device *idxd = group->idxd; |
267 | unsigned long val; |
268 | int rc; |
269 | |
270 | rc = kstrtoul(s: buf, base: 10, res: &val); |
271 | if (rc < 0) |
272 | return -EINVAL; |
273 | |
274 | if (idxd->data->type == IDXD_TYPE_IAX) |
275 | return -EOPNOTSUPP; |
276 | |
277 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
278 | return -EPERM; |
279 | |
280 | if (idxd->state == IDXD_DEV_ENABLED) |
281 | return -EPERM; |
282 | |
283 | if (idxd->rdbuf_limit == 0) |
284 | return -EPERM; |
285 | |
286 | group->use_rdbuf_limit = !!val; |
287 | return count; |
288 | } |
289 | |
290 | static ssize_t group_use_token_limit_store(struct device *dev, |
291 | struct device_attribute *attr, |
292 | const char *buf, size_t count) |
293 | { |
294 | dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n" ); |
295 | return group_use_read_buffer_limit_store(dev, attr, buf, count); |
296 | } |
297 | |
298 | static struct device_attribute dev_attr_group_use_token_limit = |
299 | __ATTR(use_token_limit, 0644, group_use_token_limit_show, |
300 | group_use_token_limit_store); |
301 | |
302 | static struct device_attribute dev_attr_group_use_read_buffer_limit = |
303 | __ATTR(use_read_buffer_limit, 0644, group_use_read_buffer_limit_show, |
304 | group_use_read_buffer_limit_store); |
305 | |
306 | static ssize_t group_engines_show(struct device *dev, |
307 | struct device_attribute *attr, char *buf) |
308 | { |
309 | struct idxd_group *group = confdev_to_group(dev); |
310 | int i, rc = 0; |
311 | struct idxd_device *idxd = group->idxd; |
312 | |
313 | for (i = 0; i < idxd->max_engines; i++) { |
314 | struct idxd_engine *engine = idxd->engines[i]; |
315 | |
316 | if (!engine->group) |
317 | continue; |
318 | |
319 | if (engine->group->id == group->id) |
320 | rc += sysfs_emit_at(buf, at: rc, fmt: "engine%d.%d " , idxd->id, engine->id); |
321 | } |
322 | |
323 | if (!rc) |
324 | return 0; |
325 | rc--; |
326 | rc += sysfs_emit_at(buf, at: rc, fmt: "\n" ); |
327 | |
328 | return rc; |
329 | } |
330 | |
331 | static struct device_attribute dev_attr_group_engines = |
332 | __ATTR(engines, 0444, group_engines_show, NULL); |
333 | |
334 | static ssize_t group_work_queues_show(struct device *dev, |
335 | struct device_attribute *attr, char *buf) |
336 | { |
337 | struct idxd_group *group = confdev_to_group(dev); |
338 | int i, rc = 0; |
339 | struct idxd_device *idxd = group->idxd; |
340 | |
341 | for (i = 0; i < idxd->max_wqs; i++) { |
342 | struct idxd_wq *wq = idxd->wqs[i]; |
343 | |
344 | if (!wq->group) |
345 | continue; |
346 | |
347 | if (wq->group->id == group->id) |
348 | rc += sysfs_emit_at(buf, at: rc, fmt: "wq%d.%d " , idxd->id, wq->id); |
349 | } |
350 | |
351 | if (!rc) |
352 | return 0; |
353 | rc--; |
354 | rc += sysfs_emit_at(buf, at: rc, fmt: "\n" ); |
355 | |
356 | return rc; |
357 | } |
358 | |
359 | static struct device_attribute dev_attr_group_work_queues = |
360 | __ATTR(work_queues, 0444, group_work_queues_show, NULL); |
361 | |
362 | static ssize_t group_traffic_class_a_show(struct device *dev, |
363 | struct device_attribute *attr, |
364 | char *buf) |
365 | { |
366 | struct idxd_group *group = confdev_to_group(dev); |
367 | |
368 | return sysfs_emit(buf, fmt: "%d\n" , group->tc_a); |
369 | } |
370 | |
371 | static ssize_t group_traffic_class_a_store(struct device *dev, |
372 | struct device_attribute *attr, |
373 | const char *buf, size_t count) |
374 | { |
375 | struct idxd_group *group = confdev_to_group(dev); |
376 | struct idxd_device *idxd = group->idxd; |
377 | long val; |
378 | int rc; |
379 | |
380 | rc = kstrtol(s: buf, base: 10, res: &val); |
381 | if (rc < 0) |
382 | return -EINVAL; |
383 | |
384 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
385 | return -EPERM; |
386 | |
387 | if (idxd->state == IDXD_DEV_ENABLED) |
388 | return -EPERM; |
389 | |
390 | if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) |
391 | return -EPERM; |
392 | |
393 | if (val < 0 || val > 7) |
394 | return -EINVAL; |
395 | |
396 | group->tc_a = val; |
397 | return count; |
398 | } |
399 | |
400 | static struct device_attribute dev_attr_group_traffic_class_a = |
401 | __ATTR(traffic_class_a, 0644, group_traffic_class_a_show, |
402 | group_traffic_class_a_store); |
403 | |
404 | static ssize_t group_traffic_class_b_show(struct device *dev, |
405 | struct device_attribute *attr, |
406 | char *buf) |
407 | { |
408 | struct idxd_group *group = confdev_to_group(dev); |
409 | |
410 | return sysfs_emit(buf, fmt: "%d\n" , group->tc_b); |
411 | } |
412 | |
413 | static ssize_t group_traffic_class_b_store(struct device *dev, |
414 | struct device_attribute *attr, |
415 | const char *buf, size_t count) |
416 | { |
417 | struct idxd_group *group = confdev_to_group(dev); |
418 | struct idxd_device *idxd = group->idxd; |
419 | long val; |
420 | int rc; |
421 | |
422 | rc = kstrtol(s: buf, base: 10, res: &val); |
423 | if (rc < 0) |
424 | return -EINVAL; |
425 | |
426 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
427 | return -EPERM; |
428 | |
429 | if (idxd->state == IDXD_DEV_ENABLED) |
430 | return -EPERM; |
431 | |
432 | if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) |
433 | return -EPERM; |
434 | |
435 | if (val < 0 || val > 7) |
436 | return -EINVAL; |
437 | |
438 | group->tc_b = val; |
439 | return count; |
440 | } |
441 | |
442 | static struct device_attribute dev_attr_group_traffic_class_b = |
443 | __ATTR(traffic_class_b, 0644, group_traffic_class_b_show, |
444 | group_traffic_class_b_store); |
445 | |
446 | static ssize_t group_desc_progress_limit_show(struct device *dev, |
447 | struct device_attribute *attr, |
448 | char *buf) |
449 | { |
450 | struct idxd_group *group = confdev_to_group(dev); |
451 | |
452 | return sysfs_emit(buf, fmt: "%d\n" , group->desc_progress_limit); |
453 | } |
454 | |
455 | static ssize_t group_desc_progress_limit_store(struct device *dev, |
456 | struct device_attribute *attr, |
457 | const char *buf, size_t count) |
458 | { |
459 | struct idxd_group *group = confdev_to_group(dev); |
460 | int val, rc; |
461 | |
462 | rc = kstrtoint(s: buf, base: 10, res: &val); |
463 | if (rc < 0) |
464 | return -EINVAL; |
465 | |
466 | if (val & ~GENMASK(1, 0)) |
467 | return -EINVAL; |
468 | |
469 | group->desc_progress_limit = val; |
470 | return count; |
471 | } |
472 | |
473 | static struct device_attribute dev_attr_group_desc_progress_limit = |
474 | __ATTR(desc_progress_limit, 0644, group_desc_progress_limit_show, |
475 | group_desc_progress_limit_store); |
476 | |
477 | static ssize_t group_batch_progress_limit_show(struct device *dev, |
478 | struct device_attribute *attr, |
479 | char *buf) |
480 | { |
481 | struct idxd_group *group = confdev_to_group(dev); |
482 | |
483 | return sysfs_emit(buf, fmt: "%d\n" , group->batch_progress_limit); |
484 | } |
485 | |
486 | static ssize_t group_batch_progress_limit_store(struct device *dev, |
487 | struct device_attribute *attr, |
488 | const char *buf, size_t count) |
489 | { |
490 | struct idxd_group *group = confdev_to_group(dev); |
491 | int val, rc; |
492 | |
493 | rc = kstrtoint(s: buf, base: 10, res: &val); |
494 | if (rc < 0) |
495 | return -EINVAL; |
496 | |
497 | if (val & ~GENMASK(1, 0)) |
498 | return -EINVAL; |
499 | |
500 | group->batch_progress_limit = val; |
501 | return count; |
502 | } |
503 | |
504 | static struct device_attribute dev_attr_group_batch_progress_limit = |
505 | __ATTR(batch_progress_limit, 0644, group_batch_progress_limit_show, |
506 | group_batch_progress_limit_store); |
507 | static struct attribute *idxd_group_attributes[] = { |
508 | &dev_attr_group_work_queues.attr, |
509 | &dev_attr_group_engines.attr, |
510 | &dev_attr_group_use_token_limit.attr, |
511 | &dev_attr_group_use_read_buffer_limit.attr, |
512 | &dev_attr_group_tokens_allowed.attr, |
513 | &dev_attr_group_read_buffers_allowed.attr, |
514 | &dev_attr_group_tokens_reserved.attr, |
515 | &dev_attr_group_read_buffers_reserved.attr, |
516 | &dev_attr_group_traffic_class_a.attr, |
517 | &dev_attr_group_traffic_class_b.attr, |
518 | &dev_attr_group_desc_progress_limit.attr, |
519 | &dev_attr_group_batch_progress_limit.attr, |
520 | NULL, |
521 | }; |
522 | |
523 | static bool idxd_group_attr_progress_limit_invisible(struct attribute *attr, |
524 | struct idxd_device *idxd) |
525 | { |
526 | return (attr == &dev_attr_group_desc_progress_limit.attr || |
527 | attr == &dev_attr_group_batch_progress_limit.attr) && |
528 | !idxd->hw.group_cap.progress_limit; |
529 | } |
530 | |
531 | static bool idxd_group_attr_read_buffers_invisible(struct attribute *attr, |
532 | struct idxd_device *idxd) |
533 | { |
534 | /* |
535 | * Intel IAA does not support Read Buffer allocation control, |
536 | * make these attributes invisible. |
537 | */ |
538 | return (attr == &dev_attr_group_use_token_limit.attr || |
539 | attr == &dev_attr_group_use_read_buffer_limit.attr || |
540 | attr == &dev_attr_group_tokens_allowed.attr || |
541 | attr == &dev_attr_group_read_buffers_allowed.attr || |
542 | attr == &dev_attr_group_tokens_reserved.attr || |
543 | attr == &dev_attr_group_read_buffers_reserved.attr) && |
544 | idxd->data->type == IDXD_TYPE_IAX; |
545 | } |
546 | |
547 | static umode_t idxd_group_attr_visible(struct kobject *kobj, |
548 | struct attribute *attr, int n) |
549 | { |
550 | struct device *dev = container_of(kobj, struct device, kobj); |
551 | struct idxd_group *group = confdev_to_group(dev); |
552 | struct idxd_device *idxd = group->idxd; |
553 | |
554 | if (idxd_group_attr_progress_limit_invisible(attr, idxd)) |
555 | return 0; |
556 | |
557 | if (idxd_group_attr_read_buffers_invisible(attr, idxd)) |
558 | return 0; |
559 | |
560 | return attr->mode; |
561 | } |
562 | |
563 | static const struct attribute_group idxd_group_attribute_group = { |
564 | .attrs = idxd_group_attributes, |
565 | .is_visible = idxd_group_attr_visible, |
566 | }; |
567 | |
568 | static const struct attribute_group *idxd_group_attribute_groups[] = { |
569 | &idxd_group_attribute_group, |
570 | NULL, |
571 | }; |
572 | |
573 | static void idxd_conf_group_release(struct device *dev) |
574 | { |
575 | struct idxd_group *group = confdev_to_group(dev); |
576 | |
577 | kfree(objp: group); |
578 | } |
579 | |
580 | const struct device_type idxd_group_device_type = { |
581 | .name = "group" , |
582 | .release = idxd_conf_group_release, |
583 | .groups = idxd_group_attribute_groups, |
584 | }; |
585 | |
586 | /* IDXD work queue attribs */ |
587 | static ssize_t wq_clients_show(struct device *dev, |
588 | struct device_attribute *attr, char *buf) |
589 | { |
590 | struct idxd_wq *wq = confdev_to_wq(dev); |
591 | |
592 | return sysfs_emit(buf, fmt: "%d\n" , wq->client_count); |
593 | } |
594 | |
595 | static struct device_attribute dev_attr_wq_clients = |
596 | __ATTR(clients, 0444, wq_clients_show, NULL); |
597 | |
598 | static ssize_t wq_state_show(struct device *dev, |
599 | struct device_attribute *attr, char *buf) |
600 | { |
601 | struct idxd_wq *wq = confdev_to_wq(dev); |
602 | |
603 | switch (wq->state) { |
604 | case IDXD_WQ_DISABLED: |
605 | return sysfs_emit(buf, fmt: "disabled\n" ); |
606 | case IDXD_WQ_ENABLED: |
607 | return sysfs_emit(buf, fmt: "enabled\n" ); |
608 | } |
609 | |
610 | return sysfs_emit(buf, fmt: "unknown\n" ); |
611 | } |
612 | |
613 | static struct device_attribute dev_attr_wq_state = |
614 | __ATTR(state, 0444, wq_state_show, NULL); |
615 | |
616 | static ssize_t wq_group_id_show(struct device *dev, |
617 | struct device_attribute *attr, char *buf) |
618 | { |
619 | struct idxd_wq *wq = confdev_to_wq(dev); |
620 | |
621 | if (wq->group) |
622 | return sysfs_emit(buf, fmt: "%u\n" , wq->group->id); |
623 | else |
624 | return sysfs_emit(buf, fmt: "-1\n" ); |
625 | } |
626 | |
627 | static ssize_t wq_group_id_store(struct device *dev, |
628 | struct device_attribute *attr, |
629 | const char *buf, size_t count) |
630 | { |
631 | struct idxd_wq *wq = confdev_to_wq(dev); |
632 | struct idxd_device *idxd = wq->idxd; |
633 | long id; |
634 | int rc; |
635 | struct idxd_group *prevg, *group; |
636 | |
637 | rc = kstrtol(s: buf, base: 10, res: &id); |
638 | if (rc < 0) |
639 | return -EINVAL; |
640 | |
641 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
642 | return -EPERM; |
643 | |
644 | if (wq->state != IDXD_WQ_DISABLED) |
645 | return -EPERM; |
646 | |
647 | if (id > idxd->max_groups - 1 || id < -1) |
648 | return -EINVAL; |
649 | |
650 | if (id == -1) { |
651 | if (wq->group) { |
652 | wq->group->num_wqs--; |
653 | wq->group = NULL; |
654 | } |
655 | return count; |
656 | } |
657 | |
658 | group = idxd->groups[id]; |
659 | prevg = wq->group; |
660 | |
661 | if (prevg) |
662 | prevg->num_wqs--; |
663 | wq->group = group; |
664 | group->num_wqs++; |
665 | return count; |
666 | } |
667 | |
668 | static struct device_attribute dev_attr_wq_group_id = |
669 | __ATTR(group_id, 0644, wq_group_id_show, wq_group_id_store); |
670 | |
671 | static ssize_t wq_mode_show(struct device *dev, struct device_attribute *attr, |
672 | char *buf) |
673 | { |
674 | struct idxd_wq *wq = confdev_to_wq(dev); |
675 | |
676 | return sysfs_emit(buf, fmt: "%s\n" , wq_dedicated(wq) ? "dedicated" : "shared" ); |
677 | } |
678 | |
679 | static ssize_t wq_mode_store(struct device *dev, |
680 | struct device_attribute *attr, const char *buf, |
681 | size_t count) |
682 | { |
683 | struct idxd_wq *wq = confdev_to_wq(dev); |
684 | struct idxd_device *idxd = wq->idxd; |
685 | |
686 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
687 | return -EPERM; |
688 | |
689 | if (wq->state != IDXD_WQ_DISABLED) |
690 | return -EPERM; |
691 | |
692 | if (sysfs_streq(s1: buf, s2: "dedicated" )) { |
693 | set_bit(nr: WQ_FLAG_DEDICATED, addr: &wq->flags); |
694 | wq->threshold = 0; |
695 | } else if (sysfs_streq(s1: buf, s2: "shared" )) { |
696 | clear_bit(nr: WQ_FLAG_DEDICATED, addr: &wq->flags); |
697 | } else { |
698 | return -EINVAL; |
699 | } |
700 | |
701 | return count; |
702 | } |
703 | |
704 | static struct device_attribute dev_attr_wq_mode = |
705 | __ATTR(mode, 0644, wq_mode_show, wq_mode_store); |
706 | |
707 | static ssize_t wq_size_show(struct device *dev, struct device_attribute *attr, |
708 | char *buf) |
709 | { |
710 | struct idxd_wq *wq = confdev_to_wq(dev); |
711 | |
712 | return sysfs_emit(buf, fmt: "%u\n" , wq->size); |
713 | } |
714 | |
715 | static int total_claimed_wq_size(struct idxd_device *idxd) |
716 | { |
717 | int i; |
718 | int wq_size = 0; |
719 | |
720 | for (i = 0; i < idxd->max_wqs; i++) { |
721 | struct idxd_wq *wq = idxd->wqs[i]; |
722 | |
723 | wq_size += wq->size; |
724 | } |
725 | |
726 | return wq_size; |
727 | } |
728 | |
729 | static ssize_t wq_size_store(struct device *dev, |
730 | struct device_attribute *attr, const char *buf, |
731 | size_t count) |
732 | { |
733 | struct idxd_wq *wq = confdev_to_wq(dev); |
734 | unsigned long size; |
735 | struct idxd_device *idxd = wq->idxd; |
736 | int rc; |
737 | |
738 | rc = kstrtoul(s: buf, base: 10, res: &size); |
739 | if (rc < 0) |
740 | return -EINVAL; |
741 | |
742 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
743 | return -EPERM; |
744 | |
745 | if (idxd->state == IDXD_DEV_ENABLED) |
746 | return -EPERM; |
747 | |
748 | if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size) |
749 | return -EINVAL; |
750 | |
751 | wq->size = size; |
752 | return count; |
753 | } |
754 | |
755 | static struct device_attribute dev_attr_wq_size = |
756 | __ATTR(size, 0644, wq_size_show, wq_size_store); |
757 | |
758 | static ssize_t wq_priority_show(struct device *dev, |
759 | struct device_attribute *attr, char *buf) |
760 | { |
761 | struct idxd_wq *wq = confdev_to_wq(dev); |
762 | |
763 | return sysfs_emit(buf, fmt: "%u\n" , wq->priority); |
764 | } |
765 | |
766 | static ssize_t wq_priority_store(struct device *dev, |
767 | struct device_attribute *attr, |
768 | const char *buf, size_t count) |
769 | { |
770 | struct idxd_wq *wq = confdev_to_wq(dev); |
771 | unsigned long prio; |
772 | struct idxd_device *idxd = wq->idxd; |
773 | int rc; |
774 | |
775 | rc = kstrtoul(s: buf, base: 10, res: &prio); |
776 | if (rc < 0) |
777 | return -EINVAL; |
778 | |
779 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
780 | return -EPERM; |
781 | |
782 | if (wq->state != IDXD_WQ_DISABLED) |
783 | return -EPERM; |
784 | |
785 | if (prio > IDXD_MAX_PRIORITY) |
786 | return -EINVAL; |
787 | |
788 | wq->priority = prio; |
789 | return count; |
790 | } |
791 | |
792 | static struct device_attribute dev_attr_wq_priority = |
793 | __ATTR(priority, 0644, wq_priority_show, wq_priority_store); |
794 | |
795 | static ssize_t wq_block_on_fault_show(struct device *dev, |
796 | struct device_attribute *attr, char *buf) |
797 | { |
798 | struct idxd_wq *wq = confdev_to_wq(dev); |
799 | |
800 | return sysfs_emit(buf, fmt: "%u\n" , test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags)); |
801 | } |
802 | |
803 | static ssize_t wq_block_on_fault_store(struct device *dev, |
804 | struct device_attribute *attr, |
805 | const char *buf, size_t count) |
806 | { |
807 | struct idxd_wq *wq = confdev_to_wq(dev); |
808 | struct idxd_device *idxd = wq->idxd; |
809 | bool bof; |
810 | int rc; |
811 | |
812 | if (!idxd->hw.gen_cap.block_on_fault) |
813 | return -EOPNOTSUPP; |
814 | |
815 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
816 | return -EPERM; |
817 | |
818 | if (wq->state != IDXD_WQ_DISABLED) |
819 | return -ENXIO; |
820 | |
821 | rc = kstrtobool(s: buf, res: &bof); |
822 | if (rc < 0) |
823 | return rc; |
824 | |
825 | if (bof) { |
826 | if (test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags)) |
827 | return -EOPNOTSUPP; |
828 | |
829 | set_bit(nr: WQ_FLAG_BLOCK_ON_FAULT, addr: &wq->flags); |
830 | } else { |
831 | clear_bit(nr: WQ_FLAG_BLOCK_ON_FAULT, addr: &wq->flags); |
832 | } |
833 | |
834 | return count; |
835 | } |
836 | |
837 | static struct device_attribute dev_attr_wq_block_on_fault = |
838 | __ATTR(block_on_fault, 0644, wq_block_on_fault_show, |
839 | wq_block_on_fault_store); |
840 | |
841 | static ssize_t wq_threshold_show(struct device *dev, |
842 | struct device_attribute *attr, char *buf) |
843 | { |
844 | struct idxd_wq *wq = confdev_to_wq(dev); |
845 | |
846 | return sysfs_emit(buf, fmt: "%u\n" , wq->threshold); |
847 | } |
848 | |
849 | static ssize_t wq_threshold_store(struct device *dev, |
850 | struct device_attribute *attr, |
851 | const char *buf, size_t count) |
852 | { |
853 | struct idxd_wq *wq = confdev_to_wq(dev); |
854 | struct idxd_device *idxd = wq->idxd; |
855 | unsigned int val; |
856 | int rc; |
857 | |
858 | rc = kstrtouint(s: buf, base: 0, res: &val); |
859 | if (rc < 0) |
860 | return -EINVAL; |
861 | |
862 | if (val > wq->size || val <= 0) |
863 | return -EINVAL; |
864 | |
865 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
866 | return -EPERM; |
867 | |
868 | if (wq->state != IDXD_WQ_DISABLED) |
869 | return -ENXIO; |
870 | |
871 | if (test_bit(WQ_FLAG_DEDICATED, &wq->flags)) |
872 | return -EINVAL; |
873 | |
874 | wq->threshold = val; |
875 | |
876 | return count; |
877 | } |
878 | |
879 | static struct device_attribute dev_attr_wq_threshold = |
880 | __ATTR(threshold, 0644, wq_threshold_show, wq_threshold_store); |
881 | |
882 | static ssize_t wq_type_show(struct device *dev, |
883 | struct device_attribute *attr, char *buf) |
884 | { |
885 | struct idxd_wq *wq = confdev_to_wq(dev); |
886 | |
887 | switch (wq->type) { |
888 | case IDXD_WQT_KERNEL: |
889 | return sysfs_emit(buf, fmt: "%s\n" , idxd_wq_type_names[IDXD_WQT_KERNEL]); |
890 | case IDXD_WQT_USER: |
891 | return sysfs_emit(buf, fmt: "%s\n" , idxd_wq_type_names[IDXD_WQT_USER]); |
892 | case IDXD_WQT_NONE: |
893 | default: |
894 | return sysfs_emit(buf, fmt: "%s\n" , idxd_wq_type_names[IDXD_WQT_NONE]); |
895 | } |
896 | |
897 | return -EINVAL; |
898 | } |
899 | |
900 | static ssize_t wq_type_store(struct device *dev, |
901 | struct device_attribute *attr, const char *buf, |
902 | size_t count) |
903 | { |
904 | struct idxd_wq *wq = confdev_to_wq(dev); |
905 | enum idxd_wq_type old_type; |
906 | |
907 | if (wq->state != IDXD_WQ_DISABLED) |
908 | return -EPERM; |
909 | |
910 | old_type = wq->type; |
911 | if (sysfs_streq(s1: buf, s2: idxd_wq_type_names[IDXD_WQT_NONE])) |
912 | wq->type = IDXD_WQT_NONE; |
913 | else if (sysfs_streq(s1: buf, s2: idxd_wq_type_names[IDXD_WQT_KERNEL])) |
914 | wq->type = IDXD_WQT_KERNEL; |
915 | else if (sysfs_streq(s1: buf, s2: idxd_wq_type_names[IDXD_WQT_USER])) |
916 | wq->type = IDXD_WQT_USER; |
917 | else |
918 | return -EINVAL; |
919 | |
920 | /* If we are changing queue type, clear the name */ |
921 | if (wq->type != old_type) |
922 | memset(wq->name, 0, WQ_NAME_SIZE + 1); |
923 | |
924 | return count; |
925 | } |
926 | |
927 | static struct device_attribute dev_attr_wq_type = |
928 | __ATTR(type, 0644, wq_type_show, wq_type_store); |
929 | |
930 | static ssize_t wq_name_show(struct device *dev, |
931 | struct device_attribute *attr, char *buf) |
932 | { |
933 | struct idxd_wq *wq = confdev_to_wq(dev); |
934 | |
935 | return sysfs_emit(buf, fmt: "%s\n" , wq->name); |
936 | } |
937 | |
938 | static ssize_t wq_name_store(struct device *dev, |
939 | struct device_attribute *attr, const char *buf, |
940 | size_t count) |
941 | { |
942 | struct idxd_wq *wq = confdev_to_wq(dev); |
943 | char *input, *pos; |
944 | |
945 | if (wq->state != IDXD_WQ_DISABLED) |
946 | return -EPERM; |
947 | |
948 | if (strlen(buf) > WQ_NAME_SIZE || strlen(buf) == 0) |
949 | return -EINVAL; |
950 | |
951 | input = kstrndup(s: buf, len: count, GFP_KERNEL); |
952 | if (!input) |
953 | return -ENOMEM; |
954 | |
955 | pos = strim(input); |
956 | memset(wq->name, 0, WQ_NAME_SIZE + 1); |
957 | sprintf(buf: wq->name, fmt: "%s" , pos); |
958 | kfree(objp: input); |
959 | return count; |
960 | } |
961 | |
962 | static struct device_attribute dev_attr_wq_name = |
963 | __ATTR(name, 0644, wq_name_show, wq_name_store); |
964 | |
965 | static ssize_t wq_cdev_minor_show(struct device *dev, |
966 | struct device_attribute *attr, char *buf) |
967 | { |
968 | struct idxd_wq *wq = confdev_to_wq(dev); |
969 | int minor = -1; |
970 | |
971 | mutex_lock(&wq->wq_lock); |
972 | if (wq->idxd_cdev) |
973 | minor = wq->idxd_cdev->minor; |
974 | mutex_unlock(lock: &wq->wq_lock); |
975 | |
976 | if (minor == -1) |
977 | return -ENXIO; |
978 | return sysfs_emit(buf, fmt: "%d\n" , minor); |
979 | } |
980 | |
981 | static struct device_attribute dev_attr_wq_cdev_minor = |
982 | __ATTR(cdev_minor, 0444, wq_cdev_minor_show, NULL); |
983 | |
984 | static int __get_sysfs_u64(const char *buf, u64 *val) |
985 | { |
986 | int rc; |
987 | |
988 | rc = kstrtou64(s: buf, base: 0, res: val); |
989 | if (rc < 0) |
990 | return -EINVAL; |
991 | |
992 | if (*val == 0) |
993 | return -EINVAL; |
994 | |
995 | *val = roundup_pow_of_two(*val); |
996 | return 0; |
997 | } |
998 | |
999 | static ssize_t wq_max_transfer_size_show(struct device *dev, struct device_attribute *attr, |
1000 | char *buf) |
1001 | { |
1002 | struct idxd_wq *wq = confdev_to_wq(dev); |
1003 | |
1004 | return sysfs_emit(buf, fmt: "%llu\n" , wq->max_xfer_bytes); |
1005 | } |
1006 | |
1007 | static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attribute *attr, |
1008 | const char *buf, size_t count) |
1009 | { |
1010 | struct idxd_wq *wq = confdev_to_wq(dev); |
1011 | struct idxd_device *idxd = wq->idxd; |
1012 | u64 xfer_size; |
1013 | int rc; |
1014 | |
1015 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1016 | return -EPERM; |
1017 | |
1018 | if (wq->state != IDXD_WQ_DISABLED) |
1019 | return -EPERM; |
1020 | |
1021 | rc = __get_sysfs_u64(buf, val: &xfer_size); |
1022 | if (rc < 0) |
1023 | return rc; |
1024 | |
1025 | if (xfer_size > idxd->max_xfer_bytes) |
1026 | return -EINVAL; |
1027 | |
1028 | wq->max_xfer_bytes = xfer_size; |
1029 | |
1030 | return count; |
1031 | } |
1032 | |
1033 | static struct device_attribute dev_attr_wq_max_transfer_size = |
1034 | __ATTR(max_transfer_size, 0644, |
1035 | wq_max_transfer_size_show, wq_max_transfer_size_store); |
1036 | |
1037 | static ssize_t wq_max_batch_size_show(struct device *dev, struct device_attribute *attr, char *buf) |
1038 | { |
1039 | struct idxd_wq *wq = confdev_to_wq(dev); |
1040 | |
1041 | return sysfs_emit(buf, fmt: "%u\n" , wq->max_batch_size); |
1042 | } |
1043 | |
1044 | static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribute *attr, |
1045 | const char *buf, size_t count) |
1046 | { |
1047 | struct idxd_wq *wq = confdev_to_wq(dev); |
1048 | struct idxd_device *idxd = wq->idxd; |
1049 | u64 batch_size; |
1050 | int rc; |
1051 | |
1052 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1053 | return -EPERM; |
1054 | |
1055 | if (wq->state != IDXD_WQ_DISABLED) |
1056 | return -EPERM; |
1057 | |
1058 | rc = __get_sysfs_u64(buf, val: &batch_size); |
1059 | if (rc < 0) |
1060 | return rc; |
1061 | |
1062 | if (batch_size > idxd->max_batch_size) |
1063 | return -EINVAL; |
1064 | |
1065 | idxd_wq_set_max_batch_size(idxd_type: idxd->data->type, wq, max_batch_size: (u32)batch_size); |
1066 | |
1067 | return count; |
1068 | } |
1069 | |
1070 | static struct device_attribute dev_attr_wq_max_batch_size = |
1071 | __ATTR(max_batch_size, 0644, wq_max_batch_size_show, wq_max_batch_size_store); |
1072 | |
1073 | static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute *attr, char *buf) |
1074 | { |
1075 | struct idxd_wq *wq = confdev_to_wq(dev); |
1076 | |
1077 | return sysfs_emit(buf, fmt: "%u\n" , test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags)); |
1078 | } |
1079 | |
1080 | static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute *attr, |
1081 | const char *buf, size_t count) |
1082 | { |
1083 | struct idxd_wq *wq = confdev_to_wq(dev); |
1084 | struct idxd_device *idxd = wq->idxd; |
1085 | bool ats_dis; |
1086 | int rc; |
1087 | |
1088 | if (wq->state != IDXD_WQ_DISABLED) |
1089 | return -EPERM; |
1090 | |
1091 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1092 | return -EPERM; |
1093 | |
1094 | rc = kstrtobool(s: buf, res: &ats_dis); |
1095 | if (rc < 0) |
1096 | return rc; |
1097 | |
1098 | if (ats_dis) |
1099 | set_bit(nr: WQ_FLAG_ATS_DISABLE, addr: &wq->flags); |
1100 | else |
1101 | clear_bit(nr: WQ_FLAG_ATS_DISABLE, addr: &wq->flags); |
1102 | |
1103 | return count; |
1104 | } |
1105 | |
1106 | static struct device_attribute dev_attr_wq_ats_disable = |
1107 | __ATTR(ats_disable, 0644, wq_ats_disable_show, wq_ats_disable_store); |
1108 | |
1109 | static ssize_t wq_prs_disable_show(struct device *dev, struct device_attribute *attr, char *buf) |
1110 | { |
1111 | struct idxd_wq *wq = confdev_to_wq(dev); |
1112 | |
1113 | return sysfs_emit(buf, fmt: "%u\n" , test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags)); |
1114 | } |
1115 | |
1116 | static ssize_t wq_prs_disable_store(struct device *dev, struct device_attribute *attr, |
1117 | const char *buf, size_t count) |
1118 | { |
1119 | struct idxd_wq *wq = confdev_to_wq(dev); |
1120 | struct idxd_device *idxd = wq->idxd; |
1121 | bool prs_dis; |
1122 | int rc; |
1123 | |
1124 | if (wq->state != IDXD_WQ_DISABLED) |
1125 | return -EPERM; |
1126 | |
1127 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1128 | return -EPERM; |
1129 | |
1130 | rc = kstrtobool(s: buf, res: &prs_dis); |
1131 | if (rc < 0) |
1132 | return rc; |
1133 | |
1134 | if (prs_dis) { |
1135 | set_bit(nr: WQ_FLAG_PRS_DISABLE, addr: &wq->flags); |
1136 | /* when PRS is disabled, BOF needs to be off as well */ |
1137 | clear_bit(nr: WQ_FLAG_BLOCK_ON_FAULT, addr: &wq->flags); |
1138 | } else { |
1139 | clear_bit(nr: WQ_FLAG_PRS_DISABLE, addr: &wq->flags); |
1140 | } |
1141 | return count; |
1142 | } |
1143 | |
1144 | static struct device_attribute dev_attr_wq_prs_disable = |
1145 | __ATTR(prs_disable, 0644, wq_prs_disable_show, wq_prs_disable_store); |
1146 | |
1147 | static ssize_t wq_occupancy_show(struct device *dev, struct device_attribute *attr, char *buf) |
1148 | { |
1149 | struct idxd_wq *wq = confdev_to_wq(dev); |
1150 | struct idxd_device *idxd = wq->idxd; |
1151 | u32 occup, offset; |
1152 | |
1153 | if (!idxd->hw.wq_cap.occupancy) |
1154 | return -EOPNOTSUPP; |
1155 | |
1156 | offset = WQCFG_OFFSET(idxd, wq->id, WQCFG_OCCUP_IDX); |
1157 | occup = ioread32(idxd->reg_base + offset) & WQCFG_OCCUP_MASK; |
1158 | |
1159 | return sysfs_emit(buf, fmt: "%u\n" , occup); |
1160 | } |
1161 | |
1162 | static struct device_attribute dev_attr_wq_occupancy = |
1163 | __ATTR(occupancy, 0444, wq_occupancy_show, NULL); |
1164 | |
1165 | static ssize_t wq_enqcmds_retries_show(struct device *dev, |
1166 | struct device_attribute *attr, char *buf) |
1167 | { |
1168 | struct idxd_wq *wq = confdev_to_wq(dev); |
1169 | |
1170 | if (wq_dedicated(wq)) |
1171 | return -EOPNOTSUPP; |
1172 | |
1173 | return sysfs_emit(buf, fmt: "%u\n" , wq->enqcmds_retries); |
1174 | } |
1175 | |
1176 | static ssize_t wq_enqcmds_retries_store(struct device *dev, struct device_attribute *attr, |
1177 | const char *buf, size_t count) |
1178 | { |
1179 | struct idxd_wq *wq = confdev_to_wq(dev); |
1180 | int rc; |
1181 | unsigned int retries; |
1182 | |
1183 | if (wq_dedicated(wq)) |
1184 | return -EOPNOTSUPP; |
1185 | |
1186 | rc = kstrtouint(s: buf, base: 10, res: &retries); |
1187 | if (rc < 0) |
1188 | return rc; |
1189 | |
1190 | if (retries > IDXD_ENQCMDS_MAX_RETRIES) |
1191 | retries = IDXD_ENQCMDS_MAX_RETRIES; |
1192 | |
1193 | wq->enqcmds_retries = retries; |
1194 | return count; |
1195 | } |
1196 | |
1197 | static struct device_attribute dev_attr_wq_enqcmds_retries = |
1198 | __ATTR(enqcmds_retries, 0644, wq_enqcmds_retries_show, wq_enqcmds_retries_store); |
1199 | |
1200 | static ssize_t wq_op_config_show(struct device *dev, |
1201 | struct device_attribute *attr, char *buf) |
1202 | { |
1203 | struct idxd_wq *wq = confdev_to_wq(dev); |
1204 | |
1205 | return sysfs_emit(buf, fmt: "%*pb\n" , IDXD_MAX_OPCAP_BITS, wq->opcap_bmap); |
1206 | } |
1207 | |
1208 | static int idxd_verify_supported_opcap(struct idxd_device *idxd, unsigned long *opmask) |
1209 | { |
1210 | int bit; |
1211 | |
1212 | /* |
1213 | * The OPCAP is defined as 256 bits that represents each operation the device |
1214 | * supports per bit. Iterate through all the bits and check if the input mask |
1215 | * is set for bits that are not set in the OPCAP for the device. If no OPCAP |
1216 | * bit is set and input mask has the bit set, then return error. |
1217 | */ |
1218 | for_each_set_bit(bit, opmask, IDXD_MAX_OPCAP_BITS) { |
1219 | if (!test_bit(bit, idxd->opcap_bmap)) |
1220 | return -EINVAL; |
1221 | } |
1222 | |
1223 | return 0; |
1224 | } |
1225 | |
1226 | static ssize_t wq_op_config_store(struct device *dev, struct device_attribute *attr, |
1227 | const char *buf, size_t count) |
1228 | { |
1229 | struct idxd_wq *wq = confdev_to_wq(dev); |
1230 | struct idxd_device *idxd = wq->idxd; |
1231 | unsigned long *opmask; |
1232 | int rc; |
1233 | |
1234 | if (wq->state != IDXD_WQ_DISABLED) |
1235 | return -EPERM; |
1236 | |
1237 | opmask = bitmap_zalloc(IDXD_MAX_OPCAP_BITS, GFP_KERNEL); |
1238 | if (!opmask) |
1239 | return -ENOMEM; |
1240 | |
1241 | rc = bitmap_parse(buf, buflen: count, dst: opmask, IDXD_MAX_OPCAP_BITS); |
1242 | if (rc < 0) |
1243 | goto err; |
1244 | |
1245 | rc = idxd_verify_supported_opcap(idxd, opmask); |
1246 | if (rc < 0) |
1247 | goto err; |
1248 | |
1249 | bitmap_copy(dst: wq->opcap_bmap, src: opmask, IDXD_MAX_OPCAP_BITS); |
1250 | |
1251 | bitmap_free(bitmap: opmask); |
1252 | return count; |
1253 | |
1254 | err: |
1255 | bitmap_free(bitmap: opmask); |
1256 | return rc; |
1257 | } |
1258 | |
1259 | static struct device_attribute dev_attr_wq_op_config = |
1260 | __ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store); |
1261 | |
1262 | static ssize_t wq_driver_name_show(struct device *dev, struct device_attribute *attr, char *buf) |
1263 | { |
1264 | struct idxd_wq *wq = confdev_to_wq(dev); |
1265 | |
1266 | return sysfs_emit(buf, fmt: "%s\n" , wq->driver_name); |
1267 | } |
1268 | |
1269 | static ssize_t wq_driver_name_store(struct device *dev, struct device_attribute *attr, |
1270 | const char *buf, size_t count) |
1271 | { |
1272 | struct idxd_wq *wq = confdev_to_wq(dev); |
1273 | char *input, *pos; |
1274 | |
1275 | if (wq->state != IDXD_WQ_DISABLED) |
1276 | return -EPERM; |
1277 | |
1278 | if (strlen(buf) > DRIVER_NAME_SIZE || strlen(buf) == 0) |
1279 | return -EINVAL; |
1280 | |
1281 | input = kstrndup(s: buf, len: count, GFP_KERNEL); |
1282 | if (!input) |
1283 | return -ENOMEM; |
1284 | |
1285 | pos = strim(input); |
1286 | memset(wq->driver_name, 0, DRIVER_NAME_SIZE + 1); |
1287 | sprintf(buf: wq->driver_name, fmt: "%s" , pos); |
1288 | kfree(objp: input); |
1289 | return count; |
1290 | } |
1291 | |
1292 | static struct device_attribute dev_attr_wq_driver_name = |
1293 | __ATTR(driver_name, 0644, wq_driver_name_show, wq_driver_name_store); |
1294 | |
1295 | static struct attribute *idxd_wq_attributes[] = { |
1296 | &dev_attr_wq_clients.attr, |
1297 | &dev_attr_wq_state.attr, |
1298 | &dev_attr_wq_group_id.attr, |
1299 | &dev_attr_wq_mode.attr, |
1300 | &dev_attr_wq_size.attr, |
1301 | &dev_attr_wq_priority.attr, |
1302 | &dev_attr_wq_block_on_fault.attr, |
1303 | &dev_attr_wq_threshold.attr, |
1304 | &dev_attr_wq_type.attr, |
1305 | &dev_attr_wq_name.attr, |
1306 | &dev_attr_wq_cdev_minor.attr, |
1307 | &dev_attr_wq_max_transfer_size.attr, |
1308 | &dev_attr_wq_max_batch_size.attr, |
1309 | &dev_attr_wq_ats_disable.attr, |
1310 | &dev_attr_wq_prs_disable.attr, |
1311 | &dev_attr_wq_occupancy.attr, |
1312 | &dev_attr_wq_enqcmds_retries.attr, |
1313 | &dev_attr_wq_op_config.attr, |
1314 | &dev_attr_wq_driver_name.attr, |
1315 | NULL, |
1316 | }; |
1317 | |
1318 | /* A WQ attr is invisible if the feature is not supported in WQCAP. */ |
1319 | #define idxd_wq_attr_invisible(name, cap_field, a, idxd) \ |
1320 | ((a) == &dev_attr_wq_##name.attr && !(idxd)->hw.wq_cap.cap_field) |
1321 | |
1322 | static bool idxd_wq_attr_max_batch_size_invisible(struct attribute *attr, |
1323 | struct idxd_device *idxd) |
1324 | { |
1325 | /* Intel IAA does not support batch processing, make it invisible */ |
1326 | return attr == &dev_attr_wq_max_batch_size.attr && |
1327 | idxd->data->type == IDXD_TYPE_IAX; |
1328 | } |
1329 | |
1330 | static umode_t idxd_wq_attr_visible(struct kobject *kobj, |
1331 | struct attribute *attr, int n) |
1332 | { |
1333 | struct device *dev = container_of(kobj, struct device, kobj); |
1334 | struct idxd_wq *wq = confdev_to_wq(dev); |
1335 | struct idxd_device *idxd = wq->idxd; |
1336 | |
1337 | if (idxd_wq_attr_invisible(op_config, op_config, attr, idxd)) |
1338 | return 0; |
1339 | |
1340 | if (idxd_wq_attr_max_batch_size_invisible(attr, idxd)) |
1341 | return 0; |
1342 | |
1343 | if (idxd_wq_attr_invisible(prs_disable, wq_prs_support, attr, idxd)) |
1344 | return 0; |
1345 | |
1346 | if (idxd_wq_attr_invisible(ats_disable, wq_ats_support, attr, idxd)) |
1347 | return 0; |
1348 | |
1349 | return attr->mode; |
1350 | } |
1351 | |
1352 | static const struct attribute_group idxd_wq_attribute_group = { |
1353 | .attrs = idxd_wq_attributes, |
1354 | .is_visible = idxd_wq_attr_visible, |
1355 | }; |
1356 | |
1357 | static const struct attribute_group *idxd_wq_attribute_groups[] = { |
1358 | &idxd_wq_attribute_group, |
1359 | NULL, |
1360 | }; |
1361 | |
1362 | static void idxd_conf_wq_release(struct device *dev) |
1363 | { |
1364 | struct idxd_wq *wq = confdev_to_wq(dev); |
1365 | |
1366 | bitmap_free(bitmap: wq->opcap_bmap); |
1367 | kfree(objp: wq->wqcfg); |
1368 | xa_destroy(&wq->upasid_xa); |
1369 | kfree(objp: wq); |
1370 | } |
1371 | |
1372 | const struct device_type idxd_wq_device_type = { |
1373 | .name = "wq" , |
1374 | .release = idxd_conf_wq_release, |
1375 | .groups = idxd_wq_attribute_groups, |
1376 | }; |
1377 | |
1378 | /* IDXD device attribs */ |
1379 | static ssize_t version_show(struct device *dev, struct device_attribute *attr, |
1380 | char *buf) |
1381 | { |
1382 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1383 | |
1384 | return sysfs_emit(buf, fmt: "%#x\n" , idxd->hw.version); |
1385 | } |
1386 | static DEVICE_ATTR_RO(version); |
1387 | |
1388 | static ssize_t max_work_queues_size_show(struct device *dev, |
1389 | struct device_attribute *attr, |
1390 | char *buf) |
1391 | { |
1392 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1393 | |
1394 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_wq_size); |
1395 | } |
1396 | static DEVICE_ATTR_RO(max_work_queues_size); |
1397 | |
1398 | static ssize_t max_groups_show(struct device *dev, |
1399 | struct device_attribute *attr, char *buf) |
1400 | { |
1401 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1402 | |
1403 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_groups); |
1404 | } |
1405 | static DEVICE_ATTR_RO(max_groups); |
1406 | |
1407 | static ssize_t max_work_queues_show(struct device *dev, |
1408 | struct device_attribute *attr, char *buf) |
1409 | { |
1410 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1411 | |
1412 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_wqs); |
1413 | } |
1414 | static DEVICE_ATTR_RO(max_work_queues); |
1415 | |
1416 | static ssize_t max_engines_show(struct device *dev, |
1417 | struct device_attribute *attr, char *buf) |
1418 | { |
1419 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1420 | |
1421 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_engines); |
1422 | } |
1423 | static DEVICE_ATTR_RO(max_engines); |
1424 | |
1425 | static ssize_t numa_node_show(struct device *dev, |
1426 | struct device_attribute *attr, char *buf) |
1427 | { |
1428 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1429 | |
1430 | return sysfs_emit(buf, fmt: "%d\n" , dev_to_node(dev: &idxd->pdev->dev)); |
1431 | } |
1432 | static DEVICE_ATTR_RO(numa_node); |
1433 | |
1434 | static ssize_t max_batch_size_show(struct device *dev, |
1435 | struct device_attribute *attr, char *buf) |
1436 | { |
1437 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1438 | |
1439 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_batch_size); |
1440 | } |
1441 | static DEVICE_ATTR_RO(max_batch_size); |
1442 | |
1443 | static ssize_t max_transfer_size_show(struct device *dev, |
1444 | struct device_attribute *attr, |
1445 | char *buf) |
1446 | { |
1447 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1448 | |
1449 | return sysfs_emit(buf, fmt: "%llu\n" , idxd->max_xfer_bytes); |
1450 | } |
1451 | static DEVICE_ATTR_RO(max_transfer_size); |
1452 | |
1453 | static ssize_t op_cap_show(struct device *dev, |
1454 | struct device_attribute *attr, char *buf) |
1455 | { |
1456 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1457 | |
1458 | return sysfs_emit(buf, fmt: "%*pb\n" , IDXD_MAX_OPCAP_BITS, idxd->opcap_bmap); |
1459 | } |
1460 | static DEVICE_ATTR_RO(op_cap); |
1461 | |
1462 | static ssize_t gen_cap_show(struct device *dev, |
1463 | struct device_attribute *attr, char *buf) |
1464 | { |
1465 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1466 | |
1467 | return sysfs_emit(buf, fmt: "%#llx\n" , idxd->hw.gen_cap.bits); |
1468 | } |
1469 | static DEVICE_ATTR_RO(gen_cap); |
1470 | |
1471 | static ssize_t configurable_show(struct device *dev, |
1472 | struct device_attribute *attr, char *buf) |
1473 | { |
1474 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1475 | |
1476 | return sysfs_emit(buf, fmt: "%u\n" , test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)); |
1477 | } |
1478 | static DEVICE_ATTR_RO(configurable); |
1479 | |
1480 | static ssize_t clients_show(struct device *dev, |
1481 | struct device_attribute *attr, char *buf) |
1482 | { |
1483 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1484 | int count = 0, i; |
1485 | |
1486 | spin_lock(lock: &idxd->dev_lock); |
1487 | for (i = 0; i < idxd->max_wqs; i++) { |
1488 | struct idxd_wq *wq = idxd->wqs[i]; |
1489 | |
1490 | count += wq->client_count; |
1491 | } |
1492 | spin_unlock(lock: &idxd->dev_lock); |
1493 | |
1494 | return sysfs_emit(buf, fmt: "%d\n" , count); |
1495 | } |
1496 | static DEVICE_ATTR_RO(clients); |
1497 | |
1498 | static ssize_t pasid_enabled_show(struct device *dev, |
1499 | struct device_attribute *attr, char *buf) |
1500 | { |
1501 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1502 | |
1503 | return sysfs_emit(buf, fmt: "%u\n" , device_user_pasid_enabled(idxd)); |
1504 | } |
1505 | static DEVICE_ATTR_RO(pasid_enabled); |
1506 | |
1507 | static ssize_t state_show(struct device *dev, |
1508 | struct device_attribute *attr, char *buf) |
1509 | { |
1510 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1511 | |
1512 | switch (idxd->state) { |
1513 | case IDXD_DEV_DISABLED: |
1514 | return sysfs_emit(buf, fmt: "disabled\n" ); |
1515 | case IDXD_DEV_ENABLED: |
1516 | return sysfs_emit(buf, fmt: "enabled\n" ); |
1517 | case IDXD_DEV_HALTED: |
1518 | return sysfs_emit(buf, fmt: "halted\n" ); |
1519 | } |
1520 | |
1521 | return sysfs_emit(buf, fmt: "unknown\n" ); |
1522 | } |
1523 | static DEVICE_ATTR_RO(state); |
1524 | |
1525 | static ssize_t errors_show(struct device *dev, |
1526 | struct device_attribute *attr, char *buf) |
1527 | { |
1528 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1529 | DECLARE_BITMAP(swerr_bmap, 256); |
1530 | |
1531 | bitmap_zero(dst: swerr_bmap, nbits: 256); |
1532 | spin_lock(lock: &idxd->dev_lock); |
1533 | multi_u64_to_bmap(bmap: swerr_bmap, val: &idxd->sw_err.bits[0], count: 4); |
1534 | spin_unlock(lock: &idxd->dev_lock); |
1535 | return sysfs_emit(buf, fmt: "%*pb\n" , 256, swerr_bmap); |
1536 | } |
1537 | static DEVICE_ATTR_RO(errors); |
1538 | |
1539 | static ssize_t max_read_buffers_show(struct device *dev, |
1540 | struct device_attribute *attr, char *buf) |
1541 | { |
1542 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1543 | |
1544 | return sysfs_emit(buf, fmt: "%u\n" , idxd->max_rdbufs); |
1545 | } |
1546 | |
1547 | static ssize_t max_tokens_show(struct device *dev, |
1548 | struct device_attribute *attr, char *buf) |
1549 | { |
1550 | dev_warn_once(dev, "attribute deprecated, see max_read_buffers.\n" ); |
1551 | return max_read_buffers_show(dev, attr, buf); |
1552 | } |
1553 | |
1554 | static DEVICE_ATTR_RO(max_tokens); /* deprecated */ |
1555 | static DEVICE_ATTR_RO(max_read_buffers); |
1556 | |
1557 | static ssize_t read_buffer_limit_show(struct device *dev, |
1558 | struct device_attribute *attr, char *buf) |
1559 | { |
1560 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1561 | |
1562 | return sysfs_emit(buf, fmt: "%u\n" , idxd->rdbuf_limit); |
1563 | } |
1564 | |
1565 | static ssize_t token_limit_show(struct device *dev, |
1566 | struct device_attribute *attr, char *buf) |
1567 | { |
1568 | dev_warn_once(dev, "attribute deprecated, see read_buffer_limit.\n" ); |
1569 | return read_buffer_limit_show(dev, attr, buf); |
1570 | } |
1571 | |
1572 | static ssize_t read_buffer_limit_store(struct device *dev, |
1573 | struct device_attribute *attr, |
1574 | const char *buf, size_t count) |
1575 | { |
1576 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1577 | unsigned long val; |
1578 | int rc; |
1579 | |
1580 | rc = kstrtoul(s: buf, base: 10, res: &val); |
1581 | if (rc < 0) |
1582 | return -EINVAL; |
1583 | |
1584 | if (idxd->state == IDXD_DEV_ENABLED) |
1585 | return -EPERM; |
1586 | |
1587 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1588 | return -EPERM; |
1589 | |
1590 | if (!idxd->hw.group_cap.rdbuf_limit) |
1591 | return -EPERM; |
1592 | |
1593 | if (val > idxd->hw.group_cap.total_rdbufs) |
1594 | return -EINVAL; |
1595 | |
1596 | idxd->rdbuf_limit = val; |
1597 | return count; |
1598 | } |
1599 | |
1600 | static ssize_t token_limit_store(struct device *dev, |
1601 | struct device_attribute *attr, |
1602 | const char *buf, size_t count) |
1603 | { |
1604 | dev_warn_once(dev, "attribute deprecated, see read_buffer_limit\n" ); |
1605 | return read_buffer_limit_store(dev, attr, buf, count); |
1606 | } |
1607 | |
1608 | static DEVICE_ATTR_RW(token_limit); /* deprecated */ |
1609 | static DEVICE_ATTR_RW(read_buffer_limit); |
1610 | |
1611 | static ssize_t cdev_major_show(struct device *dev, |
1612 | struct device_attribute *attr, char *buf) |
1613 | { |
1614 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1615 | |
1616 | return sysfs_emit(buf, fmt: "%u\n" , idxd->major); |
1617 | } |
1618 | static DEVICE_ATTR_RO(cdev_major); |
1619 | |
1620 | static ssize_t cmd_status_show(struct device *dev, |
1621 | struct device_attribute *attr, char *buf) |
1622 | { |
1623 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1624 | |
1625 | return sysfs_emit(buf, fmt: "%#x\n" , idxd->cmd_status); |
1626 | } |
1627 | |
1628 | static ssize_t cmd_status_store(struct device *dev, struct device_attribute *attr, |
1629 | const char *buf, size_t count) |
1630 | { |
1631 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1632 | |
1633 | idxd->cmd_status = 0; |
1634 | return count; |
1635 | } |
1636 | static DEVICE_ATTR_RW(cmd_status); |
1637 | |
1638 | static ssize_t iaa_cap_show(struct device *dev, |
1639 | struct device_attribute *attr, char *buf) |
1640 | { |
1641 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1642 | |
1643 | if (idxd->hw.version < DEVICE_VERSION_2) |
1644 | return -EOPNOTSUPP; |
1645 | |
1646 | return sysfs_emit(buf, fmt: "%#llx\n" , idxd->hw.iaa_cap.bits); |
1647 | } |
1648 | static DEVICE_ATTR_RO(iaa_cap); |
1649 | |
1650 | static ssize_t event_log_size_show(struct device *dev, |
1651 | struct device_attribute *attr, char *buf) |
1652 | { |
1653 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1654 | |
1655 | if (!idxd->evl) |
1656 | return -EOPNOTSUPP; |
1657 | |
1658 | return sysfs_emit(buf, fmt: "%u\n" , idxd->evl->size); |
1659 | } |
1660 | |
1661 | static ssize_t event_log_size_store(struct device *dev, |
1662 | struct device_attribute *attr, |
1663 | const char *buf, size_t count) |
1664 | { |
1665 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1666 | unsigned long val; |
1667 | int rc; |
1668 | |
1669 | if (!idxd->evl) |
1670 | return -EOPNOTSUPP; |
1671 | |
1672 | rc = kstrtoul(s: buf, base: 10, res: &val); |
1673 | if (rc < 0) |
1674 | return -EINVAL; |
1675 | |
1676 | if (idxd->state == IDXD_DEV_ENABLED) |
1677 | return -EPERM; |
1678 | |
1679 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1680 | return -EPERM; |
1681 | |
1682 | if (val < IDXD_EVL_SIZE_MIN || val > IDXD_EVL_SIZE_MAX || |
1683 | (val * evl_ent_size(idxd) > ULONG_MAX - idxd->evl->dma)) |
1684 | return -EINVAL; |
1685 | |
1686 | idxd->evl->size = val; |
1687 | return count; |
1688 | } |
1689 | static DEVICE_ATTR_RW(event_log_size); |
1690 | |
1691 | static bool idxd_device_attr_max_batch_size_invisible(struct attribute *attr, |
1692 | struct idxd_device *idxd) |
1693 | { |
1694 | /* Intel IAA does not support batch processing, make it invisible */ |
1695 | return attr == &dev_attr_max_batch_size.attr && |
1696 | idxd->data->type == IDXD_TYPE_IAX; |
1697 | } |
1698 | |
1699 | static bool idxd_device_attr_read_buffers_invisible(struct attribute *attr, |
1700 | struct idxd_device *idxd) |
1701 | { |
1702 | /* |
1703 | * Intel IAA does not support Read Buffer allocation control, |
1704 | * make these attributes invisible. |
1705 | */ |
1706 | return (attr == &dev_attr_max_tokens.attr || |
1707 | attr == &dev_attr_max_read_buffers.attr || |
1708 | attr == &dev_attr_token_limit.attr || |
1709 | attr == &dev_attr_read_buffer_limit.attr) && |
1710 | idxd->data->type == IDXD_TYPE_IAX; |
1711 | } |
1712 | |
1713 | static bool idxd_device_attr_iaa_cap_invisible(struct attribute *attr, |
1714 | struct idxd_device *idxd) |
1715 | { |
1716 | return attr == &dev_attr_iaa_cap.attr && |
1717 | (idxd->data->type != IDXD_TYPE_IAX || |
1718 | idxd->hw.version < DEVICE_VERSION_2); |
1719 | } |
1720 | |
1721 | static bool idxd_device_attr_event_log_size_invisible(struct attribute *attr, |
1722 | struct idxd_device *idxd) |
1723 | { |
1724 | return (attr == &dev_attr_event_log_size.attr && |
1725 | !idxd->hw.gen_cap.evl_support); |
1726 | } |
1727 | |
1728 | static umode_t idxd_device_attr_visible(struct kobject *kobj, |
1729 | struct attribute *attr, int n) |
1730 | { |
1731 | struct device *dev = container_of(kobj, struct device, kobj); |
1732 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1733 | |
1734 | if (idxd_device_attr_max_batch_size_invisible(attr, idxd)) |
1735 | return 0; |
1736 | |
1737 | if (idxd_device_attr_read_buffers_invisible(attr, idxd)) |
1738 | return 0; |
1739 | |
1740 | if (idxd_device_attr_iaa_cap_invisible(attr, idxd)) |
1741 | return 0; |
1742 | |
1743 | if (idxd_device_attr_event_log_size_invisible(attr, idxd)) |
1744 | return 0; |
1745 | |
1746 | return attr->mode; |
1747 | } |
1748 | |
1749 | static struct attribute *idxd_device_attributes[] = { |
1750 | &dev_attr_version.attr, |
1751 | &dev_attr_max_groups.attr, |
1752 | &dev_attr_max_work_queues.attr, |
1753 | &dev_attr_max_work_queues_size.attr, |
1754 | &dev_attr_max_engines.attr, |
1755 | &dev_attr_numa_node.attr, |
1756 | &dev_attr_max_batch_size.attr, |
1757 | &dev_attr_max_transfer_size.attr, |
1758 | &dev_attr_op_cap.attr, |
1759 | &dev_attr_gen_cap.attr, |
1760 | &dev_attr_configurable.attr, |
1761 | &dev_attr_clients.attr, |
1762 | &dev_attr_pasid_enabled.attr, |
1763 | &dev_attr_state.attr, |
1764 | &dev_attr_errors.attr, |
1765 | &dev_attr_max_tokens.attr, |
1766 | &dev_attr_max_read_buffers.attr, |
1767 | &dev_attr_token_limit.attr, |
1768 | &dev_attr_read_buffer_limit.attr, |
1769 | &dev_attr_cdev_major.attr, |
1770 | &dev_attr_cmd_status.attr, |
1771 | &dev_attr_iaa_cap.attr, |
1772 | &dev_attr_event_log_size.attr, |
1773 | NULL, |
1774 | }; |
1775 | |
1776 | static const struct attribute_group idxd_device_attribute_group = { |
1777 | .attrs = idxd_device_attributes, |
1778 | .is_visible = idxd_device_attr_visible, |
1779 | }; |
1780 | |
1781 | static const struct attribute_group *idxd_attribute_groups[] = { |
1782 | &idxd_device_attribute_group, |
1783 | NULL, |
1784 | }; |
1785 | |
1786 | static void idxd_conf_device_release(struct device *dev) |
1787 | { |
1788 | struct idxd_device *idxd = confdev_to_idxd(dev); |
1789 | |
1790 | kfree(objp: idxd->groups); |
1791 | bitmap_free(bitmap: idxd->wq_enable_map); |
1792 | kfree(objp: idxd->wqs); |
1793 | kfree(objp: idxd->engines); |
1794 | kfree(objp: idxd->evl); |
1795 | kmem_cache_destroy(s: idxd->evl_cache); |
1796 | ida_free(&idxd_ida, id: idxd->id); |
1797 | bitmap_free(bitmap: idxd->opcap_bmap); |
1798 | kfree(objp: idxd); |
1799 | } |
1800 | |
1801 | const struct device_type dsa_device_type = { |
1802 | .name = "dsa" , |
1803 | .release = idxd_conf_device_release, |
1804 | .groups = idxd_attribute_groups, |
1805 | }; |
1806 | |
1807 | const struct device_type iax_device_type = { |
1808 | .name = "iax" , |
1809 | .release = idxd_conf_device_release, |
1810 | .groups = idxd_attribute_groups, |
1811 | }; |
1812 | |
1813 | static int idxd_register_engine_devices(struct idxd_device *idxd) |
1814 | { |
1815 | struct idxd_engine *engine; |
1816 | int i, j, rc; |
1817 | |
1818 | for (i = 0; i < idxd->max_engines; i++) { |
1819 | engine = idxd->engines[i]; |
1820 | rc = device_add(engine_confdev(engine)); |
1821 | if (rc < 0) |
1822 | goto cleanup; |
1823 | } |
1824 | |
1825 | return 0; |
1826 | |
1827 | cleanup: |
1828 | j = i - 1; |
1829 | for (; i < idxd->max_engines; i++) { |
1830 | engine = idxd->engines[i]; |
1831 | put_device(engine_confdev(engine)); |
1832 | } |
1833 | |
1834 | while (j--) { |
1835 | engine = idxd->engines[j]; |
1836 | device_unregister(engine_confdev(engine)); |
1837 | } |
1838 | return rc; |
1839 | } |
1840 | |
1841 | static int idxd_register_group_devices(struct idxd_device *idxd) |
1842 | { |
1843 | struct idxd_group *group; |
1844 | int i, j, rc; |
1845 | |
1846 | for (i = 0; i < idxd->max_groups; i++) { |
1847 | group = idxd->groups[i]; |
1848 | rc = device_add(group_confdev(group)); |
1849 | if (rc < 0) |
1850 | goto cleanup; |
1851 | } |
1852 | |
1853 | return 0; |
1854 | |
1855 | cleanup: |
1856 | j = i - 1; |
1857 | for (; i < idxd->max_groups; i++) { |
1858 | group = idxd->groups[i]; |
1859 | put_device(group_confdev(group)); |
1860 | } |
1861 | |
1862 | while (j--) { |
1863 | group = idxd->groups[j]; |
1864 | device_unregister(group_confdev(group)); |
1865 | } |
1866 | return rc; |
1867 | } |
1868 | |
1869 | static int idxd_register_wq_devices(struct idxd_device *idxd) |
1870 | { |
1871 | struct idxd_wq *wq; |
1872 | int i, rc, j; |
1873 | |
1874 | for (i = 0; i < idxd->max_wqs; i++) { |
1875 | wq = idxd->wqs[i]; |
1876 | rc = device_add(wq_confdev(wq)); |
1877 | if (rc < 0) |
1878 | goto cleanup; |
1879 | } |
1880 | |
1881 | return 0; |
1882 | |
1883 | cleanup: |
1884 | j = i - 1; |
1885 | for (; i < idxd->max_wqs; i++) { |
1886 | wq = idxd->wqs[i]; |
1887 | put_device(wq_confdev(wq)); |
1888 | } |
1889 | |
1890 | while (j--) { |
1891 | wq = idxd->wqs[j]; |
1892 | device_unregister(wq_confdev(wq)); |
1893 | } |
1894 | return rc; |
1895 | } |
1896 | |
1897 | int idxd_register_devices(struct idxd_device *idxd) |
1898 | { |
1899 | struct device *dev = &idxd->pdev->dev; |
1900 | int rc, i; |
1901 | |
1902 | rc = device_add(idxd_confdev(idxd)); |
1903 | if (rc < 0) |
1904 | return rc; |
1905 | |
1906 | rc = idxd_register_wq_devices(idxd); |
1907 | if (rc < 0) { |
1908 | dev_dbg(dev, "WQ devices registering failed: %d\n" , rc); |
1909 | goto err_wq; |
1910 | } |
1911 | |
1912 | rc = idxd_register_engine_devices(idxd); |
1913 | if (rc < 0) { |
1914 | dev_dbg(dev, "Engine devices registering failed: %d\n" , rc); |
1915 | goto err_engine; |
1916 | } |
1917 | |
1918 | rc = idxd_register_group_devices(idxd); |
1919 | if (rc < 0) { |
1920 | dev_dbg(dev, "Group device registering failed: %d\n" , rc); |
1921 | goto err_group; |
1922 | } |
1923 | |
1924 | return 0; |
1925 | |
1926 | err_group: |
1927 | for (i = 0; i < idxd->max_engines; i++) |
1928 | device_unregister(engine_confdev(idxd->engines[i])); |
1929 | err_engine: |
1930 | for (i = 0; i < idxd->max_wqs; i++) |
1931 | device_unregister(wq_confdev(idxd->wqs[i])); |
1932 | err_wq: |
1933 | device_del(idxd_confdev(idxd)); |
1934 | return rc; |
1935 | } |
1936 | |
1937 | void idxd_unregister_devices(struct idxd_device *idxd) |
1938 | { |
1939 | int i; |
1940 | |
1941 | for (i = 0; i < idxd->max_wqs; i++) { |
1942 | struct idxd_wq *wq = idxd->wqs[i]; |
1943 | |
1944 | device_unregister(wq_confdev(wq)); |
1945 | } |
1946 | |
1947 | for (i = 0; i < idxd->max_engines; i++) { |
1948 | struct idxd_engine *engine = idxd->engines[i]; |
1949 | |
1950 | device_unregister(engine_confdev(engine)); |
1951 | } |
1952 | |
1953 | for (i = 0; i < idxd->max_groups; i++) { |
1954 | struct idxd_group *group = idxd->groups[i]; |
1955 | |
1956 | device_unregister(group_confdev(group)); |
1957 | } |
1958 | } |
1959 | |
1960 | int idxd_register_bus_type(void) |
1961 | { |
1962 | return bus_register(bus: &dsa_bus_type); |
1963 | } |
1964 | |
1965 | void idxd_unregister_bus_type(void) |
1966 | { |
1967 | bus_unregister(bus: &dsa_bus_type); |
1968 | } |
1969 | |