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c52ca478 DJ |
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", | |
42d279f9 | 16 | [IDXD_WQT_USER] = "user", |
c52ca478 DJ |
17 | }; |
18 | ||
c52ca478 DJ |
19 | /* IDXD engine attributes */ |
20 | static ssize_t engine_group_id_show(struct device *dev, | |
21 | struct device_attribute *attr, char *buf) | |
22 | { | |
700af3a0 | 23 | struct idxd_engine *engine = confdev_to_engine(dev); |
c52ca478 DJ |
24 | |
25 | if (engine->group) | |
8241571f | 26 | return sysfs_emit(buf, "%d\n", engine->group->id); |
c52ca478 | 27 | else |
8241571f | 28 | return sysfs_emit(buf, "%d\n", -1); |
c52ca478 DJ |
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 | { | |
700af3a0 | 35 | struct idxd_engine *engine = confdev_to_engine(dev); |
c52ca478 DJ |
36 | struct idxd_device *idxd = engine->idxd; |
37 | long id; | |
38 | int rc; | |
f7b280c6 | 39 | struct idxd_group *prevg; |
c52ca478 DJ |
40 | |
41 | rc = kstrtol(buf, 10, &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 | ||
c52ca478 DJ |
59 | prevg = engine->group; |
60 | ||
61 | if (prevg) | |
62 | prevg->num_engines--; | |
defe49f9 | 63 | engine->group = idxd->groups[id]; |
c52ca478 DJ |
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 | ||
75b91130 DJ |
87 | static void idxd_conf_engine_release(struct device *dev) |
88 | { | |
700af3a0 | 89 | struct idxd_engine *engine = confdev_to_engine(dev); |
75b91130 DJ |
90 | |
91 | kfree(engine); | |
92 | } | |
93 | ||
94 | struct device_type idxd_engine_device_type = { | |
95 | .name = "engine", | |
96 | .release = idxd_conf_engine_release, | |
97 | .groups = idxd_engine_attribute_groups, | |
98 | }; | |
99 | ||
c52ca478 DJ |
100 | /* Group attributes */ |
101 | ||
7ed6f1b8 | 102 | static void idxd_set_free_rdbufs(struct idxd_device *idxd) |
c52ca478 | 103 | { |
7ed6f1b8 | 104 | int i, rdbufs; |
c52ca478 | 105 | |
7ed6f1b8 | 106 | for (i = 0, rdbufs = 0; i < idxd->max_groups; i++) { |
defe49f9 | 107 | struct idxd_group *g = idxd->groups[i]; |
c52ca478 | 108 | |
7ed6f1b8 | 109 | rdbufs += g->rdbufs_reserved; |
c52ca478 DJ |
110 | } |
111 | ||
7ed6f1b8 | 112 | idxd->nr_rdbufs = idxd->max_rdbufs - rdbufs; |
c52ca478 DJ |
113 | } |
114 | ||
fde212e4 DJ |
115 | static ssize_t group_read_buffers_reserved_show(struct device *dev, |
116 | struct device_attribute *attr, | |
117 | char *buf) | |
c52ca478 | 118 | { |
700af3a0 | 119 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 120 | |
7ed6f1b8 | 121 | return sysfs_emit(buf, "%u\n", group->rdbufs_reserved); |
c52ca478 DJ |
122 | } |
123 | ||
fde212e4 DJ |
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) | |
c52ca478 | 135 | { |
700af3a0 | 136 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 DJ |
137 | struct idxd_device *idxd = group->idxd; |
138 | unsigned long val; | |
139 | int rc; | |
140 | ||
141 | rc = kstrtoul(buf, 10, &val); | |
142 | if (rc < 0) | |
143 | return -EINVAL; | |
144 | ||
435b512d | 145 | if (idxd->data->type == IDXD_TYPE_IAX) |
f25b4638 DJ |
146 | return -EOPNOTSUPP; |
147 | ||
c52ca478 DJ |
148 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
149 | return -EPERM; | |
150 | ||
151 | if (idxd->state == IDXD_DEV_ENABLED) | |
152 | return -EPERM; | |
153 | ||
7ed6f1b8 | 154 | if (val > idxd->max_rdbufs) |
c52ca478 DJ |
155 | return -EINVAL; |
156 | ||
7ed6f1b8 | 157 | if (val > idxd->nr_rdbufs + group->rdbufs_reserved) |
c52ca478 DJ |
158 | return -EINVAL; |
159 | ||
7ed6f1b8 DJ |
160 | group->rdbufs_reserved = val; |
161 | idxd_set_free_rdbufs(idxd); | |
c52ca478 DJ |
162 | return count; |
163 | } | |
164 | ||
fde212e4 DJ |
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 | ||
c52ca478 DJ |
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 | ||
fde212e4 DJ |
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) | |
c52ca478 | 184 | { |
700af3a0 | 185 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 186 | |
7ed6f1b8 | 187 | return sysfs_emit(buf, "%u\n", group->rdbufs_allowed); |
c52ca478 DJ |
188 | } |
189 | ||
fde212e4 DJ |
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) | |
c52ca478 | 201 | { |
700af3a0 | 202 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 DJ |
203 | struct idxd_device *idxd = group->idxd; |
204 | unsigned long val; | |
205 | int rc; | |
206 | ||
207 | rc = kstrtoul(buf, 10, &val); | |
208 | if (rc < 0) | |
209 | return -EINVAL; | |
210 | ||
435b512d | 211 | if (idxd->data->type == IDXD_TYPE_IAX) |
f25b4638 DJ |
212 | return -EOPNOTSUPP; |
213 | ||
c52ca478 DJ |
214 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
215 | return -EPERM; | |
216 | ||
217 | if (idxd->state == IDXD_DEV_ENABLED) | |
218 | return -EPERM; | |
219 | ||
c52ca478 | 220 | if (val < 4 * group->num_engines || |
7ed6f1b8 | 221 | val > group->rdbufs_reserved + idxd->nr_rdbufs) |
c52ca478 DJ |
222 | return -EINVAL; |
223 | ||
7ed6f1b8 | 224 | group->rdbufs_allowed = val; |
c52ca478 DJ |
225 | return count; |
226 | } | |
227 | ||
fde212e4 DJ |
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 | ||
c52ca478 DJ |
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 | ||
fde212e4 DJ |
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) | |
c52ca478 | 247 | { |
700af3a0 | 248 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 249 | |
7ed6f1b8 | 250 | return sysfs_emit(buf, "%u\n", group->use_rdbuf_limit); |
c52ca478 DJ |
251 | } |
252 | ||
fde212e4 DJ |
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) | |
c52ca478 | 264 | { |
700af3a0 | 265 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 DJ |
266 | struct idxd_device *idxd = group->idxd; |
267 | unsigned long val; | |
268 | int rc; | |
269 | ||
270 | rc = kstrtoul(buf, 10, &val); | |
271 | if (rc < 0) | |
272 | return -EINVAL; | |
273 | ||
435b512d | 274 | if (idxd->data->type == IDXD_TYPE_IAX) |
f25b4638 DJ |
275 | return -EOPNOTSUPP; |
276 | ||
c52ca478 DJ |
277 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
278 | return -EPERM; | |
279 | ||
280 | if (idxd->state == IDXD_DEV_ENABLED) | |
281 | return -EPERM; | |
282 | ||
7ed6f1b8 | 283 | if (idxd->rdbuf_limit == 0) |
c52ca478 DJ |
284 | return -EPERM; |
285 | ||
7ed6f1b8 | 286 | group->use_rdbuf_limit = !!val; |
c52ca478 DJ |
287 | return count; |
288 | } | |
289 | ||
fde212e4 DJ |
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 | ||
c52ca478 DJ |
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 | ||
fde212e4 DJ |
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 | ||
c52ca478 DJ |
306 | static ssize_t group_engines_show(struct device *dev, |
307 | struct device_attribute *attr, char *buf) | |
308 | { | |
700af3a0 | 309 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 310 | int i, rc = 0; |
c52ca478 DJ |
311 | struct idxd_device *idxd = group->idxd; |
312 | ||
313 | for (i = 0; i < idxd->max_engines; i++) { | |
75b91130 | 314 | struct idxd_engine *engine = idxd->engines[i]; |
c52ca478 DJ |
315 | |
316 | if (!engine->group) | |
317 | continue; | |
318 | ||
319 | if (engine->group->id == group->id) | |
8241571f | 320 | rc += sysfs_emit_at(buf, rc, "engine%d.%d ", idxd->id, engine->id); |
c52ca478 DJ |
321 | } |
322 | ||
8241571f DJ |
323 | if (!rc) |
324 | return 0; | |
c52ca478 | 325 | rc--; |
8241571f | 326 | rc += sysfs_emit_at(buf, rc, "\n"); |
c52ca478 DJ |
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 | { | |
700af3a0 | 337 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 338 | int i, rc = 0; |
c52ca478 DJ |
339 | struct idxd_device *idxd = group->idxd; |
340 | ||
341 | for (i = 0; i < idxd->max_wqs; i++) { | |
7c5dd23e | 342 | struct idxd_wq *wq = idxd->wqs[i]; |
c52ca478 DJ |
343 | |
344 | if (!wq->group) | |
345 | continue; | |
346 | ||
347 | if (wq->group->id == group->id) | |
8241571f | 348 | rc += sysfs_emit_at(buf, rc, "wq%d.%d ", idxd->id, wq->id); |
c52ca478 DJ |
349 | } |
350 | ||
8241571f DJ |
351 | if (!rc) |
352 | return 0; | |
c52ca478 | 353 | rc--; |
8241571f | 354 | rc += sysfs_emit_at(buf, rc, "\n"); |
c52ca478 DJ |
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 | { | |
700af3a0 | 366 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 367 | |
8241571f | 368 | return sysfs_emit(buf, "%d\n", group->tc_a); |
c52ca478 DJ |
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 | { | |
700af3a0 | 375 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 DJ |
376 | struct idxd_device *idxd = group->idxd; |
377 | long val; | |
378 | int rc; | |
379 | ||
380 | rc = kstrtol(buf, 10, &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 | ||
9735bde3 | 390 | if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) |
ade8a86b DJ |
391 | return -EPERM; |
392 | ||
c52ca478 DJ |
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 | { | |
700af3a0 | 408 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 | 409 | |
8241571f | 410 | return sysfs_emit(buf, "%d\n", group->tc_b); |
c52ca478 DJ |
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 | { | |
700af3a0 | 417 | struct idxd_group *group = confdev_to_group(dev); |
c52ca478 DJ |
418 | struct idxd_device *idxd = group->idxd; |
419 | long val; | |
420 | int rc; | |
421 | ||
422 | rc = kstrtol(buf, 10, &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 | ||
9735bde3 | 432 | if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) |
ade8a86b DJ |
433 | return -EPERM; |
434 | ||
c52ca478 DJ |
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 | ||
1f273752 DJ |
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, "%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(buf, 10, &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 | ||
7ca68fa3 DJ |
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, "%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(buf, 10, &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); | |
c52ca478 DJ |
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, | |
fde212e4 | 511 | &dev_attr_group_use_read_buffer_limit.attr, |
c52ca478 | 512 | &dev_attr_group_tokens_allowed.attr, |
fde212e4 | 513 | &dev_attr_group_read_buffers_allowed.attr, |
c52ca478 | 514 | &dev_attr_group_tokens_reserved.attr, |
fde212e4 | 515 | &dev_attr_group_read_buffers_reserved.attr, |
c52ca478 DJ |
516 | &dev_attr_group_traffic_class_a.attr, |
517 | &dev_attr_group_traffic_class_b.attr, | |
1f273752 | 518 | &dev_attr_group_desc_progress_limit.attr, |
7ca68fa3 | 519 | &dev_attr_group_batch_progress_limit.attr, |
c52ca478 DJ |
520 | NULL, |
521 | }; | |
522 | ||
1f273752 DJ |
523 | static bool idxd_group_attr_progress_limit_invisible(struct attribute *attr, |
524 | struct idxd_device *idxd) | |
525 | { | |
7ca68fa3 DJ |
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; | |
1f273752 DJ |
529 | } |
530 | ||
9a8ddb35 XS |
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 | ||
1f273752 DJ |
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 | ||
9a8ddb35 XS |
557 | if (idxd_group_attr_read_buffers_invisible(attr, idxd)) |
558 | return 0; | |
559 | ||
1f273752 DJ |
560 | return attr->mode; |
561 | } | |
562 | ||
c52ca478 DJ |
563 | static const struct attribute_group idxd_group_attribute_group = { |
564 | .attrs = idxd_group_attributes, | |
1f273752 | 565 | .is_visible = idxd_group_attr_visible, |
c52ca478 DJ |
566 | }; |
567 | ||
568 | static const struct attribute_group *idxd_group_attribute_groups[] = { | |
569 | &idxd_group_attribute_group, | |
570 | NULL, | |
571 | }; | |
572 | ||
defe49f9 DJ |
573 | static void idxd_conf_group_release(struct device *dev) |
574 | { | |
700af3a0 | 575 | struct idxd_group *group = confdev_to_group(dev); |
defe49f9 DJ |
576 | |
577 | kfree(group); | |
578 | } | |
579 | ||
580 | struct device_type idxd_group_device_type = { | |
581 | .name = "group", | |
582 | .release = idxd_conf_group_release, | |
583 | .groups = idxd_group_attribute_groups, | |
584 | }; | |
585 | ||
c52ca478 DJ |
586 | /* IDXD work queue attribs */ |
587 | static ssize_t wq_clients_show(struct device *dev, | |
588 | struct device_attribute *attr, char *buf) | |
589 | { | |
700af3a0 | 590 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 | 591 | |
8241571f | 592 | return sysfs_emit(buf, "%d\n", wq->client_count); |
c52ca478 DJ |
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 | { | |
700af3a0 | 601 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
602 | |
603 | switch (wq->state) { | |
604 | case IDXD_WQ_DISABLED: | |
8241571f | 605 | return sysfs_emit(buf, "disabled\n"); |
c52ca478 | 606 | case IDXD_WQ_ENABLED: |
8241571f | 607 | return sysfs_emit(buf, "enabled\n"); |
c52ca478 DJ |
608 | } |
609 | ||
8241571f | 610 | return sysfs_emit(buf, "unknown\n"); |
c52ca478 DJ |
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 | { | |
700af3a0 | 619 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
620 | |
621 | if (wq->group) | |
8241571f | 622 | return sysfs_emit(buf, "%u\n", wq->group->id); |
c52ca478 | 623 | else |
8241571f | 624 | return sysfs_emit(buf, "-1\n"); |
c52ca478 DJ |
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 | { | |
700af3a0 | 631 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
632 | struct idxd_device *idxd = wq->idxd; |
633 | long id; | |
634 | int rc; | |
635 | struct idxd_group *prevg, *group; | |
636 | ||
637 | rc = kstrtol(buf, 10, &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 | ||
defe49f9 | 658 | group = idxd->groups[id]; |
c52ca478 DJ |
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 | { | |
700af3a0 | 674 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 | 675 | |
8241571f | 676 | return sysfs_emit(buf, "%s\n", wq_dedicated(wq) ? "dedicated" : "shared"); |
c52ca478 DJ |
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 | { | |
700af3a0 | 683 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
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(buf, "dedicated")) { | |
693 | set_bit(WQ_FLAG_DEDICATED, &wq->flags); | |
694 | wq->threshold = 0; | |
42a1b738 | 695 | } else if (sysfs_streq(buf, "shared")) { |
8e50d392 | 696 | clear_bit(WQ_FLAG_DEDICATED, &wq->flags); |
c52ca478 DJ |
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 | { | |
700af3a0 | 710 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 | 711 | |
8241571f | 712 | return sysfs_emit(buf, "%u\n", wq->size); |
c52ca478 DJ |
713 | } |
714 | ||
50e7e7f6 DJ |
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++) { | |
7c5dd23e | 721 | struct idxd_wq *wq = idxd->wqs[i]; |
50e7e7f6 DJ |
722 | |
723 | wq_size += wq->size; | |
724 | } | |
725 | ||
726 | return wq_size; | |
727 | } | |
728 | ||
c52ca478 DJ |
729 | static ssize_t wq_size_store(struct device *dev, |
730 | struct device_attribute *attr, const char *buf, | |
731 | size_t count) | |
732 | { | |
700af3a0 | 733 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
734 | unsigned long size; |
735 | struct idxd_device *idxd = wq->idxd; | |
736 | int rc; | |
737 | ||
738 | rc = kstrtoul(buf, 10, &size); | |
739 | if (rc < 0) | |
740 | return -EINVAL; | |
741 | ||
742 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) | |
743 | return -EPERM; | |
744 | ||
0fff71c5 | 745 | if (idxd->state == IDXD_DEV_ENABLED) |
c52ca478 DJ |
746 | return -EPERM; |
747 | ||
50e7e7f6 | 748 | if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size) |
c52ca478 DJ |
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 | { | |
700af3a0 | 761 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 | 762 | |
8241571f | 763 | return sysfs_emit(buf, "%u\n", wq->priority); |
c52ca478 DJ |
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 | { | |
700af3a0 | 770 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
771 | unsigned long prio; |
772 | struct idxd_device *idxd = wq->idxd; | |
773 | int rc; | |
774 | ||
775 | rc = kstrtoul(buf, 10, &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 | ||
8e50d392 DJ |
795 | static ssize_t wq_block_on_fault_show(struct device *dev, |
796 | struct device_attribute *attr, char *buf) | |
797 | { | |
700af3a0 | 798 | struct idxd_wq *wq = confdev_to_wq(dev); |
8e50d392 | 799 | |
8241571f | 800 | return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags)); |
8e50d392 DJ |
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 | { | |
700af3a0 | 807 | struct idxd_wq *wq = confdev_to_wq(dev); |
8e50d392 DJ |
808 | struct idxd_device *idxd = wq->idxd; |
809 | bool bof; | |
810 | int rc; | |
811 | ||
81c2f79c DJ |
812 | if (!idxd->hw.gen_cap.block_on_fault) |
813 | return -EOPNOTSUPP; | |
814 | ||
8e50d392 DJ |
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(buf, &bof); | |
822 | if (rc < 0) | |
823 | return rc; | |
824 | ||
825 | if (bof) | |
826 | set_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags); | |
827 | else | |
828 | clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags); | |
829 | ||
830 | return count; | |
831 | } | |
832 | ||
833 | static struct device_attribute dev_attr_wq_block_on_fault = | |
834 | __ATTR(block_on_fault, 0644, wq_block_on_fault_show, | |
835 | wq_block_on_fault_store); | |
836 | ||
837 | static ssize_t wq_threshold_show(struct device *dev, | |
838 | struct device_attribute *attr, char *buf) | |
839 | { | |
700af3a0 | 840 | struct idxd_wq *wq = confdev_to_wq(dev); |
8e50d392 | 841 | |
8241571f | 842 | return sysfs_emit(buf, "%u\n", wq->threshold); |
8e50d392 DJ |
843 | } |
844 | ||
845 | static ssize_t wq_threshold_store(struct device *dev, | |
846 | struct device_attribute *attr, | |
847 | const char *buf, size_t count) | |
848 | { | |
700af3a0 | 849 | struct idxd_wq *wq = confdev_to_wq(dev); |
8e50d392 DJ |
850 | struct idxd_device *idxd = wq->idxd; |
851 | unsigned int val; | |
852 | int rc; | |
853 | ||
854 | rc = kstrtouint(buf, 0, &val); | |
855 | if (rc < 0) | |
856 | return -EINVAL; | |
857 | ||
858 | if (val > wq->size || val <= 0) | |
859 | return -EINVAL; | |
860 | ||
861 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) | |
862 | return -EPERM; | |
863 | ||
864 | if (wq->state != IDXD_WQ_DISABLED) | |
865 | return -ENXIO; | |
866 | ||
867 | if (test_bit(WQ_FLAG_DEDICATED, &wq->flags)) | |
868 | return -EINVAL; | |
869 | ||
870 | wq->threshold = val; | |
871 | ||
872 | return count; | |
873 | } | |
874 | ||
875 | static struct device_attribute dev_attr_wq_threshold = | |
876 | __ATTR(threshold, 0644, wq_threshold_show, wq_threshold_store); | |
877 | ||
c52ca478 DJ |
878 | static ssize_t wq_type_show(struct device *dev, |
879 | struct device_attribute *attr, char *buf) | |
880 | { | |
700af3a0 | 881 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
882 | |
883 | switch (wq->type) { | |
884 | case IDXD_WQT_KERNEL: | |
8241571f | 885 | return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_KERNEL]); |
42d279f9 | 886 | case IDXD_WQT_USER: |
8241571f | 887 | return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_USER]); |
c52ca478 DJ |
888 | case IDXD_WQT_NONE: |
889 | default: | |
8241571f | 890 | return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_NONE]); |
c52ca478 DJ |
891 | } |
892 | ||
893 | return -EINVAL; | |
894 | } | |
895 | ||
896 | static ssize_t wq_type_store(struct device *dev, | |
897 | struct device_attribute *attr, const char *buf, | |
898 | size_t count) | |
899 | { | |
700af3a0 | 900 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 DJ |
901 | enum idxd_wq_type old_type; |
902 | ||
903 | if (wq->state != IDXD_WQ_DISABLED) | |
904 | return -EPERM; | |
905 | ||
906 | old_type = wq->type; | |
88402c5b DJ |
907 | if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_NONE])) |
908 | wq->type = IDXD_WQT_NONE; | |
909 | else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_KERNEL])) | |
c52ca478 | 910 | wq->type = IDXD_WQT_KERNEL; |
42d279f9 DJ |
911 | else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER])) |
912 | wq->type = IDXD_WQT_USER; | |
c52ca478 | 913 | else |
88402c5b | 914 | return -EINVAL; |
c52ca478 DJ |
915 | |
916 | /* If we are changing queue type, clear the name */ | |
917 | if (wq->type != old_type) | |
918 | memset(wq->name, 0, WQ_NAME_SIZE + 1); | |
919 | ||
920 | return count; | |
921 | } | |
922 | ||
923 | static struct device_attribute dev_attr_wq_type = | |
924 | __ATTR(type, 0644, wq_type_show, wq_type_store); | |
925 | ||
926 | static ssize_t wq_name_show(struct device *dev, | |
927 | struct device_attribute *attr, char *buf) | |
928 | { | |
700af3a0 | 929 | struct idxd_wq *wq = confdev_to_wq(dev); |
c52ca478 | 930 | |
8241571f | 931 | return sysfs_emit(buf, "%s\n", wq->name); |
c52ca478 DJ |
932 | } |
933 | ||
934 | static ssize_t wq_name_store(struct device *dev, | |
935 | struct device_attribute *attr, const char *buf, | |
936 | size_t count) | |
937 | { | |
700af3a0 | 938 | struct idxd_wq *wq = confdev_to_wq(dev); |
81f5eb2b | 939 | char *input, *pos; |
c52ca478 DJ |
940 | |
941 | if (wq->state != IDXD_WQ_DISABLED) | |
942 | return -EPERM; | |
943 | ||
944 | if (strlen(buf) > WQ_NAME_SIZE || strlen(buf) == 0) | |
945 | return -EINVAL; | |
946 | ||
8e50d392 DJ |
947 | /* |
948 | * This is temporarily placed here until we have SVM support for | |
949 | * dmaengine. | |
950 | */ | |
951 | if (wq->type == IDXD_WQT_KERNEL && device_pasid_enabled(wq->idxd)) | |
952 | return -EOPNOTSUPP; | |
953 | ||
81f5eb2b DJ |
954 | input = kstrndup(buf, count, GFP_KERNEL); |
955 | if (!input) | |
956 | return -ENOMEM; | |
957 | ||
958 | pos = strim(input); | |
c52ca478 | 959 | memset(wq->name, 0, WQ_NAME_SIZE + 1); |
81f5eb2b DJ |
960 | sprintf(wq->name, "%s", pos); |
961 | kfree(input); | |
c52ca478 DJ |
962 | return count; |
963 | } | |
964 | ||
965 | static struct device_attribute dev_attr_wq_name = | |
966 | __ATTR(name, 0644, wq_name_show, wq_name_store); | |
967 | ||
42d279f9 DJ |
968 | static ssize_t wq_cdev_minor_show(struct device *dev, |
969 | struct device_attribute *attr, char *buf) | |
970 | { | |
700af3a0 | 971 | struct idxd_wq *wq = confdev_to_wq(dev); |
04922b74 | 972 | int minor = -1; |
42d279f9 | 973 | |
04922b74 DJ |
974 | mutex_lock(&wq->wq_lock); |
975 | if (wq->idxd_cdev) | |
976 | minor = wq->idxd_cdev->minor; | |
977 | mutex_unlock(&wq->wq_lock); | |
978 | ||
979 | if (minor == -1) | |
980 | return -ENXIO; | |
981 | return sysfs_emit(buf, "%d\n", minor); | |
42d279f9 DJ |
982 | } |
983 | ||
984 | static struct device_attribute dev_attr_wq_cdev_minor = | |
985 | __ATTR(cdev_minor, 0444, wq_cdev_minor_show, NULL); | |
986 | ||
e7184b15 DJ |
987 | static int __get_sysfs_u64(const char *buf, u64 *val) |
988 | { | |
989 | int rc; | |
990 | ||
991 | rc = kstrtou64(buf, 0, val); | |
992 | if (rc < 0) | |
993 | return -EINVAL; | |
994 | ||
995 | if (*val == 0) | |
996 | return -EINVAL; | |
997 | ||
998 | *val = roundup_pow_of_two(*val); | |
999 | return 0; | |
1000 | } | |
1001 | ||
d7aad555 DJ |
1002 | static ssize_t wq_max_transfer_size_show(struct device *dev, struct device_attribute *attr, |
1003 | char *buf) | |
1004 | { | |
700af3a0 | 1005 | struct idxd_wq *wq = confdev_to_wq(dev); |
d7aad555 | 1006 | |
8241571f | 1007 | return sysfs_emit(buf, "%llu\n", wq->max_xfer_bytes); |
d7aad555 DJ |
1008 | } |
1009 | ||
1010 | static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attribute *attr, | |
1011 | const char *buf, size_t count) | |
1012 | { | |
700af3a0 | 1013 | struct idxd_wq *wq = confdev_to_wq(dev); |
d7aad555 DJ |
1014 | struct idxd_device *idxd = wq->idxd; |
1015 | u64 xfer_size; | |
1016 | int rc; | |
1017 | ||
505a2d10 DJ |
1018 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1019 | return -EPERM; | |
1020 | ||
d7aad555 DJ |
1021 | if (wq->state != IDXD_WQ_DISABLED) |
1022 | return -EPERM; | |
1023 | ||
e7184b15 | 1024 | rc = __get_sysfs_u64(buf, &xfer_size); |
d7aad555 | 1025 | if (rc < 0) |
e7184b15 | 1026 | return rc; |
d7aad555 | 1027 | |
d7aad555 DJ |
1028 | if (xfer_size > idxd->max_xfer_bytes) |
1029 | return -EINVAL; | |
1030 | ||
1031 | wq->max_xfer_bytes = xfer_size; | |
1032 | ||
1033 | return count; | |
1034 | } | |
1035 | ||
1036 | static struct device_attribute dev_attr_wq_max_transfer_size = | |
1037 | __ATTR(max_transfer_size, 0644, | |
1038 | wq_max_transfer_size_show, wq_max_transfer_size_store); | |
1039 | ||
e7184b15 DJ |
1040 | static ssize_t wq_max_batch_size_show(struct device *dev, struct device_attribute *attr, char *buf) |
1041 | { | |
700af3a0 | 1042 | struct idxd_wq *wq = confdev_to_wq(dev); |
e7184b15 | 1043 | |
8241571f | 1044 | return sysfs_emit(buf, "%u\n", wq->max_batch_size); |
e7184b15 DJ |
1045 | } |
1046 | ||
1047 | static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribute *attr, | |
1048 | const char *buf, size_t count) | |
1049 | { | |
700af3a0 | 1050 | struct idxd_wq *wq = confdev_to_wq(dev); |
e7184b15 DJ |
1051 | struct idxd_device *idxd = wq->idxd; |
1052 | u64 batch_size; | |
1053 | int rc; | |
1054 | ||
66903461 DJ |
1055 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) |
1056 | return -EPERM; | |
1057 | ||
e7184b15 DJ |
1058 | if (wq->state != IDXD_WQ_DISABLED) |
1059 | return -EPERM; | |
1060 | ||
1061 | rc = __get_sysfs_u64(buf, &batch_size); | |
1062 | if (rc < 0) | |
1063 | return rc; | |
1064 | ||
1065 | if (batch_size > idxd->max_batch_size) | |
1066 | return -EINVAL; | |
1067 | ||
e8dbd644 | 1068 | idxd_wq_set_max_batch_size(idxd->data->type, wq, (u32)batch_size); |
e7184b15 DJ |
1069 | |
1070 | return count; | |
1071 | } | |
1072 | ||
1073 | static struct device_attribute dev_attr_wq_max_batch_size = | |
1074 | __ATTR(max_batch_size, 0644, wq_max_batch_size_show, wq_max_batch_size_store); | |
1075 | ||
92de5fa2 DJ |
1076 | static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute *attr, char *buf) |
1077 | { | |
700af3a0 | 1078 | struct idxd_wq *wq = confdev_to_wq(dev); |
92de5fa2 | 1079 | |
22bd0df8 | 1080 | return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags)); |
92de5fa2 DJ |
1081 | } |
1082 | ||
1083 | static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute *attr, | |
1084 | const char *buf, size_t count) | |
1085 | { | |
700af3a0 | 1086 | struct idxd_wq *wq = confdev_to_wq(dev); |
92de5fa2 DJ |
1087 | struct idxd_device *idxd = wq->idxd; |
1088 | bool ats_dis; | |
1089 | int rc; | |
1090 | ||
1091 | if (wq->state != IDXD_WQ_DISABLED) | |
1092 | return -EPERM; | |
1093 | ||
1094 | if (!idxd->hw.wq_cap.wq_ats_support) | |
1095 | return -EOPNOTSUPP; | |
1096 | ||
1097 | rc = kstrtobool(buf, &ats_dis); | |
1098 | if (rc < 0) | |
1099 | return rc; | |
1100 | ||
22bd0df8 DJ |
1101 | if (ats_dis) |
1102 | set_bit(WQ_FLAG_ATS_DISABLE, &wq->flags); | |
1103 | else | |
1104 | clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags); | |
92de5fa2 DJ |
1105 | |
1106 | return count; | |
1107 | } | |
1108 | ||
1109 | static struct device_attribute dev_attr_wq_ats_disable = | |
1110 | __ATTR(ats_disable, 0644, wq_ats_disable_show, wq_ats_disable_store); | |
1111 | ||
e753a64b DJ |
1112 | static ssize_t wq_occupancy_show(struct device *dev, struct device_attribute *attr, char *buf) |
1113 | { | |
1114 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1115 | struct idxd_device *idxd = wq->idxd; | |
1116 | u32 occup, offset; | |
1117 | ||
1118 | if (!idxd->hw.wq_cap.occupancy) | |
1119 | return -EOPNOTSUPP; | |
1120 | ||
1121 | offset = WQCFG_OFFSET(idxd, wq->id, WQCFG_OCCUP_IDX); | |
1122 | occup = ioread32(idxd->reg_base + offset) & WQCFG_OCCUP_MASK; | |
1123 | ||
1124 | return sysfs_emit(buf, "%u\n", occup); | |
1125 | } | |
1126 | ||
1127 | static struct device_attribute dev_attr_wq_occupancy = | |
1128 | __ATTR(occupancy, 0444, wq_occupancy_show, NULL); | |
1129 | ||
7930d855 DJ |
1130 | static ssize_t wq_enqcmds_retries_show(struct device *dev, |
1131 | struct device_attribute *attr, char *buf) | |
1132 | { | |
1133 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1134 | ||
1135 | if (wq_dedicated(wq)) | |
1136 | return -EOPNOTSUPP; | |
1137 | ||
1138 | return sysfs_emit(buf, "%u\n", wq->enqcmds_retries); | |
1139 | } | |
1140 | ||
1141 | static ssize_t wq_enqcmds_retries_store(struct device *dev, struct device_attribute *attr, | |
1142 | const char *buf, size_t count) | |
1143 | { | |
1144 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1145 | int rc; | |
1146 | unsigned int retries; | |
1147 | ||
1148 | if (wq_dedicated(wq)) | |
1149 | return -EOPNOTSUPP; | |
1150 | ||
1151 | rc = kstrtouint(buf, 10, &retries); | |
1152 | if (rc < 0) | |
1153 | return rc; | |
1154 | ||
1155 | if (retries > IDXD_ENQCMDS_MAX_RETRIES) | |
1156 | retries = IDXD_ENQCMDS_MAX_RETRIES; | |
1157 | ||
1158 | wq->enqcmds_retries = retries; | |
1159 | return count; | |
1160 | } | |
1161 | ||
1162 | static struct device_attribute dev_attr_wq_enqcmds_retries = | |
1163 | __ATTR(enqcmds_retries, 0644, wq_enqcmds_retries_show, wq_enqcmds_retries_store); | |
1164 | ||
b0325aef DJ |
1165 | static ssize_t wq_op_config_show(struct device *dev, |
1166 | struct device_attribute *attr, char *buf) | |
1167 | { | |
1168 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1169 | ||
1170 | return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, wq->opcap_bmap); | |
1171 | } | |
1172 | ||
1173 | static int idxd_verify_supported_opcap(struct idxd_device *idxd, unsigned long *opmask) | |
1174 | { | |
1175 | int bit; | |
1176 | ||
1177 | /* | |
1178 | * The OPCAP is defined as 256 bits that represents each operation the device | |
1179 | * supports per bit. Iterate through all the bits and check if the input mask | |
1180 | * is set for bits that are not set in the OPCAP for the device. If no OPCAP | |
1181 | * bit is set and input mask has the bit set, then return error. | |
1182 | */ | |
1183 | for_each_set_bit(bit, opmask, IDXD_MAX_OPCAP_BITS) { | |
1184 | if (!test_bit(bit, idxd->opcap_bmap)) | |
1185 | return -EINVAL; | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | ||
1191 | static ssize_t wq_op_config_store(struct device *dev, struct device_attribute *attr, | |
1192 | const char *buf, size_t count) | |
1193 | { | |
1194 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1195 | struct idxd_device *idxd = wq->idxd; | |
1196 | unsigned long *opmask; | |
1197 | int rc; | |
1198 | ||
1199 | if (wq->state != IDXD_WQ_DISABLED) | |
1200 | return -EPERM; | |
1201 | ||
1202 | opmask = bitmap_zalloc(IDXD_MAX_OPCAP_BITS, GFP_KERNEL); | |
1203 | if (!opmask) | |
1204 | return -ENOMEM; | |
1205 | ||
1206 | rc = bitmap_parse(buf, count, opmask, IDXD_MAX_OPCAP_BITS); | |
1207 | if (rc < 0) | |
1208 | goto err; | |
1209 | ||
1210 | rc = idxd_verify_supported_opcap(idxd, opmask); | |
1211 | if (rc < 0) | |
1212 | goto err; | |
1213 | ||
1214 | bitmap_copy(wq->opcap_bmap, opmask, IDXD_MAX_OPCAP_BITS); | |
1215 | ||
1216 | bitmap_free(opmask); | |
1217 | return count; | |
1218 | ||
1219 | err: | |
1220 | bitmap_free(opmask); | |
1221 | return rc; | |
1222 | } | |
1223 | ||
1224 | static struct device_attribute dev_attr_wq_op_config = | |
1225 | __ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store); | |
1226 | ||
c52ca478 DJ |
1227 | static struct attribute *idxd_wq_attributes[] = { |
1228 | &dev_attr_wq_clients.attr, | |
1229 | &dev_attr_wq_state.attr, | |
1230 | &dev_attr_wq_group_id.attr, | |
1231 | &dev_attr_wq_mode.attr, | |
1232 | &dev_attr_wq_size.attr, | |
1233 | &dev_attr_wq_priority.attr, | |
8e50d392 DJ |
1234 | &dev_attr_wq_block_on_fault.attr, |
1235 | &dev_attr_wq_threshold.attr, | |
c52ca478 DJ |
1236 | &dev_attr_wq_type.attr, |
1237 | &dev_attr_wq_name.attr, | |
42d279f9 | 1238 | &dev_attr_wq_cdev_minor.attr, |
d7aad555 | 1239 | &dev_attr_wq_max_transfer_size.attr, |
e7184b15 | 1240 | &dev_attr_wq_max_batch_size.attr, |
92de5fa2 | 1241 | &dev_attr_wq_ats_disable.attr, |
e753a64b | 1242 | &dev_attr_wq_occupancy.attr, |
7930d855 | 1243 | &dev_attr_wq_enqcmds_retries.attr, |
b0325aef | 1244 | &dev_attr_wq_op_config.attr, |
c52ca478 DJ |
1245 | NULL, |
1246 | }; | |
1247 | ||
b0325aef DJ |
1248 | static bool idxd_wq_attr_op_config_invisible(struct attribute *attr, |
1249 | struct idxd_device *idxd) | |
1250 | { | |
1251 | return attr == &dev_attr_wq_op_config.attr && | |
1252 | !idxd->hw.wq_cap.op_config; | |
1253 | } | |
1254 | ||
91123b37 XS |
1255 | static bool idxd_wq_attr_max_batch_size_invisible(struct attribute *attr, |
1256 | struct idxd_device *idxd) | |
1257 | { | |
1258 | /* Intel IAA does not support batch processing, make it invisible */ | |
1259 | return attr == &dev_attr_wq_max_batch_size.attr && | |
1260 | idxd->data->type == IDXD_TYPE_IAX; | |
1261 | } | |
1262 | ||
b0325aef DJ |
1263 | static umode_t idxd_wq_attr_visible(struct kobject *kobj, |
1264 | struct attribute *attr, int n) | |
1265 | { | |
1266 | struct device *dev = container_of(kobj, struct device, kobj); | |
1267 | struct idxd_wq *wq = confdev_to_wq(dev); | |
1268 | struct idxd_device *idxd = wq->idxd; | |
1269 | ||
1270 | if (idxd_wq_attr_op_config_invisible(attr, idxd)) | |
1271 | return 0; | |
1272 | ||
91123b37 XS |
1273 | if (idxd_wq_attr_max_batch_size_invisible(attr, idxd)) |
1274 | return 0; | |
1275 | ||
b0325aef DJ |
1276 | return attr->mode; |
1277 | } | |
1278 | ||
c52ca478 DJ |
1279 | static const struct attribute_group idxd_wq_attribute_group = { |
1280 | .attrs = idxd_wq_attributes, | |
b0325aef | 1281 | .is_visible = idxd_wq_attr_visible, |
c52ca478 DJ |
1282 | }; |
1283 | ||
1284 | static const struct attribute_group *idxd_wq_attribute_groups[] = { | |
1285 | &idxd_wq_attribute_group, | |
1286 | NULL, | |
1287 | }; | |
1288 | ||
7c5dd23e DJ |
1289 | static void idxd_conf_wq_release(struct device *dev) |
1290 | { | |
700af3a0 | 1291 | struct idxd_wq *wq = confdev_to_wq(dev); |
7c5dd23e | 1292 | |
b0325aef | 1293 | bitmap_free(wq->opcap_bmap); |
7c5dd23e DJ |
1294 | kfree(wq->wqcfg); |
1295 | kfree(wq); | |
1296 | } | |
1297 | ||
1298 | struct device_type idxd_wq_device_type = { | |
1299 | .name = "wq", | |
1300 | .release = idxd_conf_wq_release, | |
1301 | .groups = idxd_wq_attribute_groups, | |
1302 | }; | |
1303 | ||
c52ca478 | 1304 | /* IDXD device attribs */ |
c2ce6bbc DJ |
1305 | static ssize_t version_show(struct device *dev, struct device_attribute *attr, |
1306 | char *buf) | |
1307 | { | |
700af3a0 | 1308 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c2ce6bbc | 1309 | |
8241571f | 1310 | return sysfs_emit(buf, "%#x\n", idxd->hw.version); |
c2ce6bbc DJ |
1311 | } |
1312 | static DEVICE_ATTR_RO(version); | |
1313 | ||
c52ca478 DJ |
1314 | static ssize_t max_work_queues_size_show(struct device *dev, |
1315 | struct device_attribute *attr, | |
1316 | char *buf) | |
1317 | { | |
700af3a0 | 1318 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1319 | |
8241571f | 1320 | return sysfs_emit(buf, "%u\n", idxd->max_wq_size); |
c52ca478 DJ |
1321 | } |
1322 | static DEVICE_ATTR_RO(max_work_queues_size); | |
1323 | ||
1324 | static ssize_t max_groups_show(struct device *dev, | |
1325 | struct device_attribute *attr, char *buf) | |
1326 | { | |
700af3a0 | 1327 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1328 | |
8241571f | 1329 | return sysfs_emit(buf, "%u\n", idxd->max_groups); |
c52ca478 DJ |
1330 | } |
1331 | static DEVICE_ATTR_RO(max_groups); | |
1332 | ||
1333 | static ssize_t max_work_queues_show(struct device *dev, | |
1334 | struct device_attribute *attr, char *buf) | |
1335 | { | |
700af3a0 | 1336 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1337 | |
8241571f | 1338 | return sysfs_emit(buf, "%u\n", idxd->max_wqs); |
c52ca478 DJ |
1339 | } |
1340 | static DEVICE_ATTR_RO(max_work_queues); | |
1341 | ||
1342 | static ssize_t max_engines_show(struct device *dev, | |
1343 | struct device_attribute *attr, char *buf) | |
1344 | { | |
700af3a0 | 1345 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1346 | |
8241571f | 1347 | return sysfs_emit(buf, "%u\n", idxd->max_engines); |
c52ca478 DJ |
1348 | } |
1349 | static DEVICE_ATTR_RO(max_engines); | |
1350 | ||
1351 | static ssize_t numa_node_show(struct device *dev, | |
1352 | struct device_attribute *attr, char *buf) | |
1353 | { | |
700af3a0 | 1354 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1355 | |
8241571f | 1356 | return sysfs_emit(buf, "%d\n", dev_to_node(&idxd->pdev->dev)); |
c52ca478 DJ |
1357 | } |
1358 | static DEVICE_ATTR_RO(numa_node); | |
1359 | ||
1360 | static ssize_t max_batch_size_show(struct device *dev, | |
1361 | struct device_attribute *attr, char *buf) | |
1362 | { | |
700af3a0 | 1363 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1364 | |
8241571f | 1365 | return sysfs_emit(buf, "%u\n", idxd->max_batch_size); |
c52ca478 DJ |
1366 | } |
1367 | static DEVICE_ATTR_RO(max_batch_size); | |
1368 | ||
1369 | static ssize_t max_transfer_size_show(struct device *dev, | |
1370 | struct device_attribute *attr, | |
1371 | char *buf) | |
1372 | { | |
700af3a0 | 1373 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1374 | |
8241571f | 1375 | return sysfs_emit(buf, "%llu\n", idxd->max_xfer_bytes); |
c52ca478 DJ |
1376 | } |
1377 | static DEVICE_ATTR_RO(max_transfer_size); | |
1378 | ||
1379 | static ssize_t op_cap_show(struct device *dev, | |
1380 | struct device_attribute *attr, char *buf) | |
1381 | { | |
700af3a0 | 1382 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1383 | |
a8563a33 | 1384 | return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, idxd->opcap_bmap); |
c52ca478 DJ |
1385 | } |
1386 | static DEVICE_ATTR_RO(op_cap); | |
1387 | ||
9065958e DJ |
1388 | static ssize_t gen_cap_show(struct device *dev, |
1389 | struct device_attribute *attr, char *buf) | |
1390 | { | |
700af3a0 | 1391 | struct idxd_device *idxd = confdev_to_idxd(dev); |
9065958e | 1392 | |
8241571f | 1393 | return sysfs_emit(buf, "%#llx\n", idxd->hw.gen_cap.bits); |
9065958e DJ |
1394 | } |
1395 | static DEVICE_ATTR_RO(gen_cap); | |
1396 | ||
c52ca478 DJ |
1397 | static ssize_t configurable_show(struct device *dev, |
1398 | struct device_attribute *attr, char *buf) | |
1399 | { | |
700af3a0 | 1400 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1401 | |
8241571f | 1402 | return sysfs_emit(buf, "%u\n", test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)); |
c52ca478 DJ |
1403 | } |
1404 | static DEVICE_ATTR_RO(configurable); | |
1405 | ||
1406 | static ssize_t clients_show(struct device *dev, | |
1407 | struct device_attribute *attr, char *buf) | |
1408 | { | |
700af3a0 | 1409 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 DJ |
1410 | int count = 0, i; |
1411 | ||
cf84a4b9 | 1412 | spin_lock(&idxd->dev_lock); |
c52ca478 | 1413 | for (i = 0; i < idxd->max_wqs; i++) { |
7c5dd23e | 1414 | struct idxd_wq *wq = idxd->wqs[i]; |
c52ca478 DJ |
1415 | |
1416 | count += wq->client_count; | |
1417 | } | |
cf84a4b9 | 1418 | spin_unlock(&idxd->dev_lock); |
c52ca478 | 1419 | |
8241571f | 1420 | return sysfs_emit(buf, "%d\n", count); |
c52ca478 DJ |
1421 | } |
1422 | static DEVICE_ATTR_RO(clients); | |
1423 | ||
8e50d392 DJ |
1424 | static ssize_t pasid_enabled_show(struct device *dev, |
1425 | struct device_attribute *attr, char *buf) | |
1426 | { | |
700af3a0 | 1427 | struct idxd_device *idxd = confdev_to_idxd(dev); |
8e50d392 | 1428 | |
8241571f | 1429 | return sysfs_emit(buf, "%u\n", device_pasid_enabled(idxd)); |
8e50d392 DJ |
1430 | } |
1431 | static DEVICE_ATTR_RO(pasid_enabled); | |
1432 | ||
c52ca478 DJ |
1433 | static ssize_t state_show(struct device *dev, |
1434 | struct device_attribute *attr, char *buf) | |
1435 | { | |
700af3a0 | 1436 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 DJ |
1437 | |
1438 | switch (idxd->state) { | |
1439 | case IDXD_DEV_DISABLED: | |
8241571f | 1440 | return sysfs_emit(buf, "disabled\n"); |
c52ca478 | 1441 | case IDXD_DEV_ENABLED: |
8241571f | 1442 | return sysfs_emit(buf, "enabled\n"); |
c52ca478 | 1443 | case IDXD_DEV_HALTED: |
8241571f | 1444 | return sysfs_emit(buf, "halted\n"); |
c52ca478 DJ |
1445 | } |
1446 | ||
8241571f | 1447 | return sysfs_emit(buf, "unknown\n"); |
c52ca478 DJ |
1448 | } |
1449 | static DEVICE_ATTR_RO(state); | |
1450 | ||
1451 | static ssize_t errors_show(struct device *dev, | |
1452 | struct device_attribute *attr, char *buf) | |
1453 | { | |
700af3a0 | 1454 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1455 | int i, out = 0; |
c52ca478 | 1456 | |
cf84a4b9 | 1457 | spin_lock(&idxd->dev_lock); |
c52ca478 | 1458 | for (i = 0; i < 4; i++) |
8241571f | 1459 | out += sysfs_emit_at(buf, out, "%#018llx ", idxd->sw_err.bits[i]); |
cf84a4b9 | 1460 | spin_unlock(&idxd->dev_lock); |
c52ca478 | 1461 | out--; |
8241571f | 1462 | out += sysfs_emit_at(buf, out, "\n"); |
c52ca478 DJ |
1463 | return out; |
1464 | } | |
1465 | static DEVICE_ATTR_RO(errors); | |
1466 | ||
fde212e4 DJ |
1467 | static ssize_t max_read_buffers_show(struct device *dev, |
1468 | struct device_attribute *attr, char *buf) | |
c52ca478 | 1469 | { |
700af3a0 | 1470 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1471 | |
7ed6f1b8 | 1472 | return sysfs_emit(buf, "%u\n", idxd->max_rdbufs); |
c52ca478 | 1473 | } |
c52ca478 | 1474 | |
fde212e4 DJ |
1475 | static ssize_t max_tokens_show(struct device *dev, |
1476 | struct device_attribute *attr, char *buf) | |
1477 | { | |
1478 | dev_warn_once(dev, "attribute deprecated, see max_read_buffers.\n"); | |
1479 | return max_read_buffers_show(dev, attr, buf); | |
1480 | } | |
1481 | ||
1482 | static DEVICE_ATTR_RO(max_tokens); /* deprecated */ | |
1483 | static DEVICE_ATTR_RO(max_read_buffers); | |
1484 | ||
1485 | static ssize_t read_buffer_limit_show(struct device *dev, | |
1486 | struct device_attribute *attr, char *buf) | |
c52ca478 | 1487 | { |
700af3a0 | 1488 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 | 1489 | |
7ed6f1b8 | 1490 | return sysfs_emit(buf, "%u\n", idxd->rdbuf_limit); |
c52ca478 DJ |
1491 | } |
1492 | ||
fde212e4 DJ |
1493 | static ssize_t token_limit_show(struct device *dev, |
1494 | struct device_attribute *attr, char *buf) | |
1495 | { | |
1496 | dev_warn_once(dev, "attribute deprecated, see read_buffer_limit.\n"); | |
1497 | return read_buffer_limit_show(dev, attr, buf); | |
1498 | } | |
1499 | ||
1500 | static ssize_t read_buffer_limit_store(struct device *dev, | |
1501 | struct device_attribute *attr, | |
1502 | const char *buf, size_t count) | |
c52ca478 | 1503 | { |
700af3a0 | 1504 | struct idxd_device *idxd = confdev_to_idxd(dev); |
c52ca478 DJ |
1505 | unsigned long val; |
1506 | int rc; | |
1507 | ||
1508 | rc = kstrtoul(buf, 10, &val); | |
1509 | if (rc < 0) | |
1510 | return -EINVAL; | |
1511 | ||
1512 | if (idxd->state == IDXD_DEV_ENABLED) | |
1513 | return -EPERM; | |
1514 | ||
1515 | if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) | |
1516 | return -EPERM; | |
1517 | ||
7ed6f1b8 | 1518 | if (!idxd->hw.group_cap.rdbuf_limit) |
c52ca478 DJ |
1519 | return -EPERM; |
1520 | ||
7ed6f1b8 | 1521 | if (val > idxd->hw.group_cap.total_rdbufs) |
c52ca478 DJ |
1522 | return -EINVAL; |
1523 | ||
7ed6f1b8 | 1524 | idxd->rdbuf_limit = val; |
c52ca478 DJ |
1525 | return count; |
1526 | } | |
fde212e4 DJ |
1527 | |
1528 | static ssize_t token_limit_store(struct device *dev, | |
1529 | struct device_attribute *attr, | |
1530 | const char *buf, size_t count) | |
1531 | { | |
1532 | dev_warn_once(dev, "attribute deprecated, see read_buffer_limit\n"); | |
1533 | return read_buffer_limit_store(dev, attr, buf, count); | |
1534 | } | |
1535 | ||
1536 | static DEVICE_ATTR_RW(token_limit); /* deprecated */ | |
1537 | static DEVICE_ATTR_RW(read_buffer_limit); | |
c52ca478 | 1538 | |
42d279f9 DJ |
1539 | static ssize_t cdev_major_show(struct device *dev, |
1540 | struct device_attribute *attr, char *buf) | |
1541 | { | |
700af3a0 | 1542 | struct idxd_device *idxd = confdev_to_idxd(dev); |
42d279f9 | 1543 | |
8241571f | 1544 | return sysfs_emit(buf, "%u\n", idxd->major); |
42d279f9 DJ |
1545 | } |
1546 | static DEVICE_ATTR_RO(cdev_major); | |
1547 | ||
ff18de55 DJ |
1548 | static ssize_t cmd_status_show(struct device *dev, |
1549 | struct device_attribute *attr, char *buf) | |
1550 | { | |
700af3a0 | 1551 | struct idxd_device *idxd = confdev_to_idxd(dev); |
ff18de55 | 1552 | |
8241571f | 1553 | return sysfs_emit(buf, "%#x\n", idxd->cmd_status); |
ff18de55 | 1554 | } |
125d1037 DJ |
1555 | |
1556 | static ssize_t cmd_status_store(struct device *dev, struct device_attribute *attr, | |
1557 | const char *buf, size_t count) | |
1558 | { | |
1559 | struct idxd_device *idxd = confdev_to_idxd(dev); | |
1560 | ||
1561 | idxd->cmd_status = 0; | |
1562 | return count; | |
1563 | } | |
1564 | static DEVICE_ATTR_RW(cmd_status); | |
ff18de55 | 1565 | |
91123b37 XS |
1566 | static bool idxd_device_attr_max_batch_size_invisible(struct attribute *attr, |
1567 | struct idxd_device *idxd) | |
1568 | { | |
1569 | /* Intel IAA does not support batch processing, make it invisible */ | |
1570 | return attr == &dev_attr_max_batch_size.attr && | |
1571 | idxd->data->type == IDXD_TYPE_IAX; | |
1572 | } | |
1573 | ||
9a8ddb35 XS |
1574 | static bool idxd_device_attr_read_buffers_invisible(struct attribute *attr, |
1575 | struct idxd_device *idxd) | |
1576 | { | |
1577 | /* | |
1578 | * Intel IAA does not support Read Buffer allocation control, | |
1579 | * make these attributes invisible. | |
1580 | */ | |
1581 | return (attr == &dev_attr_max_tokens.attr || | |
1582 | attr == &dev_attr_max_read_buffers.attr || | |
1583 | attr == &dev_attr_token_limit.attr || | |
1584 | attr == &dev_attr_read_buffer_limit.attr) && | |
1585 | idxd->data->type == IDXD_TYPE_IAX; | |
1586 | } | |
1587 | ||
91123b37 XS |
1588 | static umode_t idxd_device_attr_visible(struct kobject *kobj, |
1589 | struct attribute *attr, int n) | |
1590 | { | |
1591 | struct device *dev = container_of(kobj, struct device, kobj); | |
1592 | struct idxd_device *idxd = confdev_to_idxd(dev); | |
1593 | ||
1594 | if (idxd_device_attr_max_batch_size_invisible(attr, idxd)) | |
1595 | return 0; | |
1596 | ||
9a8ddb35 XS |
1597 | if (idxd_device_attr_read_buffers_invisible(attr, idxd)) |
1598 | return 0; | |
1599 | ||
91123b37 XS |
1600 | return attr->mode; |
1601 | } | |
1602 | ||
c52ca478 | 1603 | static struct attribute *idxd_device_attributes[] = { |
c2ce6bbc | 1604 | &dev_attr_version.attr, |
c52ca478 DJ |
1605 | &dev_attr_max_groups.attr, |
1606 | &dev_attr_max_work_queues.attr, | |
1607 | &dev_attr_max_work_queues_size.attr, | |
1608 | &dev_attr_max_engines.attr, | |
1609 | &dev_attr_numa_node.attr, | |
1610 | &dev_attr_max_batch_size.attr, | |
1611 | &dev_attr_max_transfer_size.attr, | |
1612 | &dev_attr_op_cap.attr, | |
9065958e | 1613 | &dev_attr_gen_cap.attr, |
c52ca478 DJ |
1614 | &dev_attr_configurable.attr, |
1615 | &dev_attr_clients.attr, | |
8e50d392 | 1616 | &dev_attr_pasid_enabled.attr, |
c52ca478 DJ |
1617 | &dev_attr_state.attr, |
1618 | &dev_attr_errors.attr, | |
1619 | &dev_attr_max_tokens.attr, | |
fde212e4 | 1620 | &dev_attr_max_read_buffers.attr, |
c52ca478 | 1621 | &dev_attr_token_limit.attr, |
fde212e4 | 1622 | &dev_attr_read_buffer_limit.attr, |
42d279f9 | 1623 | &dev_attr_cdev_major.attr, |
ff18de55 | 1624 | &dev_attr_cmd_status.attr, |
c52ca478 DJ |
1625 | NULL, |
1626 | }; | |
1627 | ||
1628 | static const struct attribute_group idxd_device_attribute_group = { | |
1629 | .attrs = idxd_device_attributes, | |
91123b37 | 1630 | .is_visible = idxd_device_attr_visible, |
c52ca478 DJ |
1631 | }; |
1632 | ||
1633 | static const struct attribute_group *idxd_attribute_groups[] = { | |
1634 | &idxd_device_attribute_group, | |
1635 | NULL, | |
1636 | }; | |
1637 | ||
47c16ac2 DJ |
1638 | static void idxd_conf_device_release(struct device *dev) |
1639 | { | |
700af3a0 | 1640 | struct idxd_device *idxd = confdev_to_idxd(dev); |
47c16ac2 DJ |
1641 | |
1642 | kfree(idxd->groups); | |
de5819b9 | 1643 | bitmap_free(idxd->wq_enable_map); |
47c16ac2 DJ |
1644 | kfree(idxd->wqs); |
1645 | kfree(idxd->engines); | |
4b73e4eb | 1646 | ida_free(&idxd_ida, idxd->id); |
a8563a33 | 1647 | bitmap_free(idxd->opcap_bmap); |
47c16ac2 DJ |
1648 | kfree(idxd); |
1649 | } | |
1650 | ||
1651 | struct device_type dsa_device_type = { | |
1652 | .name = "dsa", | |
1653 | .release = idxd_conf_device_release, | |
1654 | .groups = idxd_attribute_groups, | |
1655 | }; | |
1656 | ||
1657 | struct device_type iax_device_type = { | |
1658 | .name = "iax", | |
1659 | .release = idxd_conf_device_release, | |
1660 | .groups = idxd_attribute_groups, | |
1661 | }; | |
1662 | ||
75b91130 | 1663 | static int idxd_register_engine_devices(struct idxd_device *idxd) |
c52ca478 | 1664 | { |
700af3a0 | 1665 | struct idxd_engine *engine; |
75b91130 | 1666 | int i, j, rc; |
c52ca478 DJ |
1667 | |
1668 | for (i = 0; i < idxd->max_engines; i++) { | |
700af3a0 DJ |
1669 | engine = idxd->engines[i]; |
1670 | rc = device_add(engine_confdev(engine)); | |
75b91130 | 1671 | if (rc < 0) |
c52ca478 | 1672 | goto cleanup; |
c52ca478 DJ |
1673 | } |
1674 | ||
1675 | return 0; | |
1676 | ||
1677 | cleanup: | |
75b91130 | 1678 | j = i - 1; |
700af3a0 DJ |
1679 | for (; i < idxd->max_engines; i++) { |
1680 | engine = idxd->engines[i]; | |
1681 | put_device(engine_confdev(engine)); | |
1682 | } | |
c52ca478 | 1683 | |
700af3a0 DJ |
1684 | while (j--) { |
1685 | engine = idxd->engines[j]; | |
1686 | device_unregister(engine_confdev(engine)); | |
1687 | } | |
c52ca478 DJ |
1688 | return rc; |
1689 | } | |
1690 | ||
defe49f9 | 1691 | static int idxd_register_group_devices(struct idxd_device *idxd) |
c52ca478 | 1692 | { |
700af3a0 | 1693 | struct idxd_group *group; |
defe49f9 | 1694 | int i, j, rc; |
c52ca478 DJ |
1695 | |
1696 | for (i = 0; i < idxd->max_groups; i++) { | |
700af3a0 DJ |
1697 | group = idxd->groups[i]; |
1698 | rc = device_add(group_confdev(group)); | |
defe49f9 | 1699 | if (rc < 0) |
c52ca478 | 1700 | goto cleanup; |
c52ca478 DJ |
1701 | } |
1702 | ||
1703 | return 0; | |
1704 | ||
1705 | cleanup: | |
defe49f9 | 1706 | j = i - 1; |
700af3a0 DJ |
1707 | for (; i < idxd->max_groups; i++) { |
1708 | group = idxd->groups[i]; | |
1709 | put_device(group_confdev(group)); | |
1710 | } | |
c52ca478 | 1711 | |
700af3a0 DJ |
1712 | while (j--) { |
1713 | group = idxd->groups[j]; | |
1714 | device_unregister(group_confdev(group)); | |
1715 | } | |
c52ca478 DJ |
1716 | return rc; |
1717 | } | |
1718 | ||
7c5dd23e | 1719 | static int idxd_register_wq_devices(struct idxd_device *idxd) |
c52ca478 | 1720 | { |
700af3a0 | 1721 | struct idxd_wq *wq; |
7c5dd23e | 1722 | int i, rc, j; |
c52ca478 DJ |
1723 | |
1724 | for (i = 0; i < idxd->max_wqs; i++) { | |
700af3a0 DJ |
1725 | wq = idxd->wqs[i]; |
1726 | rc = device_add(wq_confdev(wq)); | |
7c5dd23e | 1727 | if (rc < 0) |
c52ca478 | 1728 | goto cleanup; |
c52ca478 DJ |
1729 | } |
1730 | ||
1731 | return 0; | |
1732 | ||
1733 | cleanup: | |
7c5dd23e | 1734 | j = i - 1; |
700af3a0 DJ |
1735 | for (; i < idxd->max_wqs; i++) { |
1736 | wq = idxd->wqs[i]; | |
1737 | put_device(wq_confdev(wq)); | |
1738 | } | |
c52ca478 | 1739 | |
700af3a0 DJ |
1740 | while (j--) { |
1741 | wq = idxd->wqs[j]; | |
1742 | device_unregister(wq_confdev(wq)); | |
1743 | } | |
c52ca478 DJ |
1744 | return rc; |
1745 | } | |
1746 | ||
47c16ac2 | 1747 | int idxd_register_devices(struct idxd_device *idxd) |
c52ca478 DJ |
1748 | { |
1749 | struct device *dev = &idxd->pdev->dev; | |
7c5dd23e | 1750 | int rc, i; |
c52ca478 | 1751 | |
700af3a0 | 1752 | rc = device_add(idxd_confdev(idxd)); |
47c16ac2 | 1753 | if (rc < 0) |
c52ca478 | 1754 | return rc; |
c52ca478 | 1755 | |
7c5dd23e | 1756 | rc = idxd_register_wq_devices(idxd); |
c52ca478 | 1757 | if (rc < 0) { |
7c5dd23e DJ |
1758 | dev_dbg(dev, "WQ devices registering failed: %d\n", rc); |
1759 | goto err_wq; | |
c52ca478 DJ |
1760 | } |
1761 | ||
75b91130 | 1762 | rc = idxd_register_engine_devices(idxd); |
c52ca478 | 1763 | if (rc < 0) { |
75b91130 DJ |
1764 | dev_dbg(dev, "Engine devices registering failed: %d\n", rc); |
1765 | goto err_engine; | |
c52ca478 DJ |
1766 | } |
1767 | ||
defe49f9 | 1768 | rc = idxd_register_group_devices(idxd); |
c52ca478 | 1769 | if (rc < 0) { |
defe49f9 | 1770 | dev_dbg(dev, "Group device registering failed: %d\n", rc); |
75b91130 | 1771 | goto err_group; |
c52ca478 DJ |
1772 | } |
1773 | ||
1774 | return 0; | |
7c5dd23e | 1775 | |
75b91130 DJ |
1776 | err_group: |
1777 | for (i = 0; i < idxd->max_engines; i++) | |
700af3a0 | 1778 | device_unregister(engine_confdev(idxd->engines[i])); |
75b91130 | 1779 | err_engine: |
7c5dd23e | 1780 | for (i = 0; i < idxd->max_wqs; i++) |
700af3a0 | 1781 | device_unregister(wq_confdev(idxd->wqs[i])); |
7c5dd23e | 1782 | err_wq: |
700af3a0 | 1783 | device_del(idxd_confdev(idxd)); |
7c5dd23e | 1784 | return rc; |
c52ca478 DJ |
1785 | } |
1786 | ||
47c16ac2 | 1787 | void idxd_unregister_devices(struct idxd_device *idxd) |
c52ca478 DJ |
1788 | { |
1789 | int i; | |
1790 | ||
1791 | for (i = 0; i < idxd->max_wqs; i++) { | |
7c5dd23e | 1792 | struct idxd_wq *wq = idxd->wqs[i]; |
c52ca478 | 1793 | |
700af3a0 | 1794 | device_unregister(wq_confdev(wq)); |
c52ca478 DJ |
1795 | } |
1796 | ||
1797 | for (i = 0; i < idxd->max_engines; i++) { | |
75b91130 | 1798 | struct idxd_engine *engine = idxd->engines[i]; |
c52ca478 | 1799 | |
700af3a0 | 1800 | device_unregister(engine_confdev(engine)); |
c52ca478 DJ |
1801 | } |
1802 | ||
1803 | for (i = 0; i < idxd->max_groups; i++) { | |
defe49f9 | 1804 | struct idxd_group *group = idxd->groups[i]; |
c52ca478 | 1805 | |
700af3a0 | 1806 | device_unregister(group_confdev(group)); |
c52ca478 | 1807 | } |
c52ca478 DJ |
1808 | } |
1809 | ||
1810 | int idxd_register_bus_type(void) | |
1811 | { | |
4b73e4eb | 1812 | return bus_register(&dsa_bus_type); |
c52ca478 DJ |
1813 | } |
1814 | ||
1815 | void idxd_unregister_bus_type(void) | |
1816 | { | |
4b73e4eb | 1817 | bus_unregister(&dsa_bus_type); |
c52ca478 | 1818 | } |