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>
7 #include <linux/device.h>
8 #include <linux/io-64-nonatomic-lo-hi.h>
9 #include <uapi/linux/idxd.h>
10 #include "registers.h"
13 static char *idxd_wq_type_names[] = {
14 [IDXD_WQT_NONE] = "none",
15 [IDXD_WQT_KERNEL] = "kernel",
16 [IDXD_WQT_USER] = "user",
19 /* IDXD engine attributes */
20 static ssize_t engine_group_id_show(struct device *dev,
21 struct device_attribute *attr, char *buf)
23 struct idxd_engine *engine = confdev_to_engine(dev);
26 return sysfs_emit(buf, "%d\n", engine->group->id);
28 return sysfs_emit(buf, "%d\n", -1);
31 static ssize_t engine_group_id_store(struct device *dev,
32 struct device_attribute *attr,
33 const char *buf, size_t count)
35 struct idxd_engine *engine = confdev_to_engine(dev);
36 struct idxd_device *idxd = engine->idxd;
39 struct idxd_group *prevg;
41 rc = kstrtol(buf, 10, &id);
45 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
48 if (id > idxd->max_groups - 1 || id < -1)
53 engine->group->num_engines--;
59 prevg = engine->group;
63 engine->group = idxd->groups[id];
64 engine->group->num_engines++;
69 static struct device_attribute dev_attr_engine_group =
70 __ATTR(group_id, 0644, engine_group_id_show,
71 engine_group_id_store);
73 static struct attribute *idxd_engine_attributes[] = {
74 &dev_attr_engine_group.attr,
78 static const struct attribute_group idxd_engine_attribute_group = {
79 .attrs = idxd_engine_attributes,
82 static const struct attribute_group *idxd_engine_attribute_groups[] = {
83 &idxd_engine_attribute_group,
87 static void idxd_conf_engine_release(struct device *dev)
89 struct idxd_engine *engine = confdev_to_engine(dev);
94 struct device_type idxd_engine_device_type = {
96 .release = idxd_conf_engine_release,
97 .groups = idxd_engine_attribute_groups,
100 /* Group attributes */
102 static void idxd_set_free_rdbufs(struct idxd_device *idxd)
106 for (i = 0, rdbufs = 0; i < idxd->max_groups; i++) {
107 struct idxd_group *g = idxd->groups[i];
109 rdbufs += g->rdbufs_reserved;
112 idxd->nr_rdbufs = idxd->max_rdbufs - rdbufs;
115 static ssize_t group_read_buffers_reserved_show(struct device *dev,
116 struct device_attribute *attr,
119 struct idxd_group *group = confdev_to_group(dev);
121 return sysfs_emit(buf, "%u\n", group->rdbufs_reserved);
124 static ssize_t group_tokens_reserved_show(struct device *dev,
125 struct device_attribute *attr,
128 dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n");
129 return group_read_buffers_reserved_show(dev, attr, buf);
132 static ssize_t group_read_buffers_reserved_store(struct device *dev,
133 struct device_attribute *attr,
134 const char *buf, size_t count)
136 struct idxd_group *group = confdev_to_group(dev);
137 struct idxd_device *idxd = group->idxd;
141 rc = kstrtoul(buf, 10, &val);
145 if (idxd->data->type == IDXD_TYPE_IAX)
148 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
151 if (idxd->state == IDXD_DEV_ENABLED)
154 if (val > idxd->max_rdbufs)
157 if (val > idxd->nr_rdbufs + group->rdbufs_reserved)
160 group->rdbufs_reserved = val;
161 idxd_set_free_rdbufs(idxd);
165 static ssize_t group_tokens_reserved_store(struct device *dev,
166 struct device_attribute *attr,
167 const char *buf, size_t count)
169 dev_warn_once(dev, "attribute deprecated, see read_buffers_reserved.\n");
170 return group_read_buffers_reserved_store(dev, attr, buf, count);
173 static struct device_attribute dev_attr_group_tokens_reserved =
174 __ATTR(tokens_reserved, 0644, group_tokens_reserved_show,
175 group_tokens_reserved_store);
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);
181 static ssize_t group_read_buffers_allowed_show(struct device *dev,
182 struct device_attribute *attr,
185 struct idxd_group *group = confdev_to_group(dev);
187 return sysfs_emit(buf, "%u\n", group->rdbufs_allowed);
190 static ssize_t group_tokens_allowed_show(struct device *dev,
191 struct device_attribute *attr,
194 dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n");
195 return group_read_buffers_allowed_show(dev, attr, buf);
198 static ssize_t group_read_buffers_allowed_store(struct device *dev,
199 struct device_attribute *attr,
200 const char *buf, size_t count)
202 struct idxd_group *group = confdev_to_group(dev);
203 struct idxd_device *idxd = group->idxd;
207 rc = kstrtoul(buf, 10, &val);
211 if (idxd->data->type == IDXD_TYPE_IAX)
214 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
217 if (idxd->state == IDXD_DEV_ENABLED)
220 if (val < 4 * group->num_engines ||
221 val > group->rdbufs_reserved + idxd->nr_rdbufs)
224 group->rdbufs_allowed = val;
228 static ssize_t group_tokens_allowed_store(struct device *dev,
229 struct device_attribute *attr,
230 const char *buf, size_t count)
232 dev_warn_once(dev, "attribute deprecated, see read_buffers_allowed.\n");
233 return group_read_buffers_allowed_store(dev, attr, buf, count);
236 static struct device_attribute dev_attr_group_tokens_allowed =
237 __ATTR(tokens_allowed, 0644, group_tokens_allowed_show,
238 group_tokens_allowed_store);
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);
244 static ssize_t group_use_read_buffer_limit_show(struct device *dev,
245 struct device_attribute *attr,
248 struct idxd_group *group = confdev_to_group(dev);
250 return sysfs_emit(buf, "%u\n", group->use_rdbuf_limit);
253 static ssize_t group_use_token_limit_show(struct device *dev,
254 struct device_attribute *attr,
257 dev_warn_once(dev, "attribute deprecated, see use_read_buffer_limit.\n");
258 return group_use_read_buffer_limit_show(dev, attr, buf);
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)
265 struct idxd_group *group = confdev_to_group(dev);
266 struct idxd_device *idxd = group->idxd;
270 rc = kstrtoul(buf, 10, &val);
274 if (idxd->data->type == IDXD_TYPE_IAX)
277 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
280 if (idxd->state == IDXD_DEV_ENABLED)
283 if (idxd->rdbuf_limit == 0)
286 group->use_rdbuf_limit = !!val;
290 static ssize_t group_use_token_limit_store(struct device *dev,
291 struct device_attribute *attr,
292 const char *buf, size_t count)
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);
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);
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);
306 static ssize_t group_engines_show(struct device *dev,
307 struct device_attribute *attr, char *buf)
309 struct idxd_group *group = confdev_to_group(dev);
311 struct idxd_device *idxd = group->idxd;
313 for (i = 0; i < idxd->max_engines; i++) {
314 struct idxd_engine *engine = idxd->engines[i];
319 if (engine->group->id == group->id)
320 rc += sysfs_emit_at(buf, rc, "engine%d.%d ", idxd->id, engine->id);
326 rc += sysfs_emit_at(buf, rc, "\n");
331 static struct device_attribute dev_attr_group_engines =
332 __ATTR(engines, 0444, group_engines_show, NULL);
334 static ssize_t group_work_queues_show(struct device *dev,
335 struct device_attribute *attr, char *buf)
337 struct idxd_group *group = confdev_to_group(dev);
339 struct idxd_device *idxd = group->idxd;
341 for (i = 0; i < idxd->max_wqs; i++) {
342 struct idxd_wq *wq = idxd->wqs[i];
347 if (wq->group->id == group->id)
348 rc += sysfs_emit_at(buf, rc, "wq%d.%d ", idxd->id, wq->id);
354 rc += sysfs_emit_at(buf, rc, "\n");
359 static struct device_attribute dev_attr_group_work_queues =
360 __ATTR(work_queues, 0444, group_work_queues_show, NULL);
362 static ssize_t group_traffic_class_a_show(struct device *dev,
363 struct device_attribute *attr,
366 struct idxd_group *group = confdev_to_group(dev);
368 return sysfs_emit(buf, "%d\n", group->tc_a);
371 static ssize_t group_traffic_class_a_store(struct device *dev,
372 struct device_attribute *attr,
373 const char *buf, size_t count)
375 struct idxd_group *group = confdev_to_group(dev);
376 struct idxd_device *idxd = group->idxd;
380 rc = kstrtol(buf, 10, &val);
384 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
387 if (idxd->state == IDXD_DEV_ENABLED)
390 if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
393 if (val < 0 || val > 7)
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);
404 static ssize_t group_traffic_class_b_show(struct device *dev,
405 struct device_attribute *attr,
408 struct idxd_group *group = confdev_to_group(dev);
410 return sysfs_emit(buf, "%d\n", group->tc_b);
413 static ssize_t group_traffic_class_b_store(struct device *dev,
414 struct device_attribute *attr,
415 const char *buf, size_t count)
417 struct idxd_group *group = confdev_to_group(dev);
418 struct idxd_device *idxd = group->idxd;
422 rc = kstrtol(buf, 10, &val);
426 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
429 if (idxd->state == IDXD_DEV_ENABLED)
432 if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
435 if (val < 0 || val > 7)
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);
446 static ssize_t group_desc_progress_limit_show(struct device *dev,
447 struct device_attribute *attr,
450 struct idxd_group *group = confdev_to_group(dev);
452 return sysfs_emit(buf, "%d\n", group->desc_progress_limit);
455 static ssize_t group_desc_progress_limit_store(struct device *dev,
456 struct device_attribute *attr,
457 const char *buf, size_t count)
459 struct idxd_group *group = confdev_to_group(dev);
462 rc = kstrtoint(buf, 10, &val);
466 if (val & ~GENMASK(1, 0))
469 group->desc_progress_limit = val;
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);
477 static ssize_t group_batch_progress_limit_show(struct device *dev,
478 struct device_attribute *attr,
481 struct idxd_group *group = confdev_to_group(dev);
483 return sysfs_emit(buf, "%d\n", group->batch_progress_limit);
486 static ssize_t group_batch_progress_limit_store(struct device *dev,
487 struct device_attribute *attr,
488 const char *buf, size_t count)
490 struct idxd_group *group = confdev_to_group(dev);
493 rc = kstrtoint(buf, 10, &val);
497 if (val & ~GENMASK(1, 0))
500 group->batch_progress_limit = val;
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,
523 static bool idxd_group_attr_progress_limit_invisible(struct attribute *attr,
524 struct idxd_device *idxd)
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;
531 static bool idxd_group_attr_read_buffers_invisible(struct attribute *attr,
532 struct idxd_device *idxd)
535 * Intel IAA does not support Read Buffer allocation control,
536 * make these attributes invisible.
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;
547 static umode_t idxd_group_attr_visible(struct kobject *kobj,
548 struct attribute *attr, int n)
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;
554 if (idxd_group_attr_progress_limit_invisible(attr, idxd))
557 if (idxd_group_attr_read_buffers_invisible(attr, idxd))
563 static const struct attribute_group idxd_group_attribute_group = {
564 .attrs = idxd_group_attributes,
565 .is_visible = idxd_group_attr_visible,
568 static const struct attribute_group *idxd_group_attribute_groups[] = {
569 &idxd_group_attribute_group,
573 static void idxd_conf_group_release(struct device *dev)
575 struct idxd_group *group = confdev_to_group(dev);
580 struct device_type idxd_group_device_type = {
582 .release = idxd_conf_group_release,
583 .groups = idxd_group_attribute_groups,
586 /* IDXD work queue attribs */
587 static ssize_t wq_clients_show(struct device *dev,
588 struct device_attribute *attr, char *buf)
590 struct idxd_wq *wq = confdev_to_wq(dev);
592 return sysfs_emit(buf, "%d\n", wq->client_count);
595 static struct device_attribute dev_attr_wq_clients =
596 __ATTR(clients, 0444, wq_clients_show, NULL);
598 static ssize_t wq_state_show(struct device *dev,
599 struct device_attribute *attr, char *buf)
601 struct idxd_wq *wq = confdev_to_wq(dev);
604 case IDXD_WQ_DISABLED:
605 return sysfs_emit(buf, "disabled\n");
606 case IDXD_WQ_ENABLED:
607 return sysfs_emit(buf, "enabled\n");
610 return sysfs_emit(buf, "unknown\n");
613 static struct device_attribute dev_attr_wq_state =
614 __ATTR(state, 0444, wq_state_show, NULL);
616 static ssize_t wq_group_id_show(struct device *dev,
617 struct device_attribute *attr, char *buf)
619 struct idxd_wq *wq = confdev_to_wq(dev);
622 return sysfs_emit(buf, "%u\n", wq->group->id);
624 return sysfs_emit(buf, "-1\n");
627 static ssize_t wq_group_id_store(struct device *dev,
628 struct device_attribute *attr,
629 const char *buf, size_t count)
631 struct idxd_wq *wq = confdev_to_wq(dev);
632 struct idxd_device *idxd = wq->idxd;
635 struct idxd_group *prevg, *group;
637 rc = kstrtol(buf, 10, &id);
641 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
644 if (wq->state != IDXD_WQ_DISABLED)
647 if (id > idxd->max_groups - 1 || id < -1)
652 wq->group->num_wqs--;
658 group = idxd->groups[id];
668 static struct device_attribute dev_attr_wq_group_id =
669 __ATTR(group_id, 0644, wq_group_id_show, wq_group_id_store);
671 static ssize_t wq_mode_show(struct device *dev, struct device_attribute *attr,
674 struct idxd_wq *wq = confdev_to_wq(dev);
676 return sysfs_emit(buf, "%s\n", wq_dedicated(wq) ? "dedicated" : "shared");
679 static ssize_t wq_mode_store(struct device *dev,
680 struct device_attribute *attr, const char *buf,
683 struct idxd_wq *wq = confdev_to_wq(dev);
684 struct idxd_device *idxd = wq->idxd;
686 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
689 if (wq->state != IDXD_WQ_DISABLED)
692 if (sysfs_streq(buf, "dedicated")) {
693 set_bit(WQ_FLAG_DEDICATED, &wq->flags);
695 } else if (sysfs_streq(buf, "shared")) {
696 clear_bit(WQ_FLAG_DEDICATED, &wq->flags);
704 static struct device_attribute dev_attr_wq_mode =
705 __ATTR(mode, 0644, wq_mode_show, wq_mode_store);
707 static ssize_t wq_size_show(struct device *dev, struct device_attribute *attr,
710 struct idxd_wq *wq = confdev_to_wq(dev);
712 return sysfs_emit(buf, "%u\n", wq->size);
715 static int total_claimed_wq_size(struct idxd_device *idxd)
720 for (i = 0; i < idxd->max_wqs; i++) {
721 struct idxd_wq *wq = idxd->wqs[i];
729 static ssize_t wq_size_store(struct device *dev,
730 struct device_attribute *attr, const char *buf,
733 struct idxd_wq *wq = confdev_to_wq(dev);
735 struct idxd_device *idxd = wq->idxd;
738 rc = kstrtoul(buf, 10, &size);
742 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
745 if (idxd->state == IDXD_DEV_ENABLED)
748 if (size + total_claimed_wq_size(idxd) - wq->size > idxd->max_wq_size)
755 static struct device_attribute dev_attr_wq_size =
756 __ATTR(size, 0644, wq_size_show, wq_size_store);
758 static ssize_t wq_priority_show(struct device *dev,
759 struct device_attribute *attr, char *buf)
761 struct idxd_wq *wq = confdev_to_wq(dev);
763 return sysfs_emit(buf, "%u\n", wq->priority);
766 static ssize_t wq_priority_store(struct device *dev,
767 struct device_attribute *attr,
768 const char *buf, size_t count)
770 struct idxd_wq *wq = confdev_to_wq(dev);
772 struct idxd_device *idxd = wq->idxd;
775 rc = kstrtoul(buf, 10, &prio);
779 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
782 if (wq->state != IDXD_WQ_DISABLED)
785 if (prio > IDXD_MAX_PRIORITY)
792 static struct device_attribute dev_attr_wq_priority =
793 __ATTR(priority, 0644, wq_priority_show, wq_priority_store);
795 static ssize_t wq_block_on_fault_show(struct device *dev,
796 struct device_attribute *attr, char *buf)
798 struct idxd_wq *wq = confdev_to_wq(dev);
800 return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags));
803 static ssize_t wq_block_on_fault_store(struct device *dev,
804 struct device_attribute *attr,
805 const char *buf, size_t count)
807 struct idxd_wq *wq = confdev_to_wq(dev);
808 struct idxd_device *idxd = wq->idxd;
812 if (!idxd->hw.gen_cap.block_on_fault)
815 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
818 if (wq->state != IDXD_WQ_DISABLED)
821 rc = kstrtobool(buf, &bof);
826 if (test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags))
829 set_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
831 clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
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);
841 static ssize_t wq_threshold_show(struct device *dev,
842 struct device_attribute *attr, char *buf)
844 struct idxd_wq *wq = confdev_to_wq(dev);
846 return sysfs_emit(buf, "%u\n", wq->threshold);
849 static ssize_t wq_threshold_store(struct device *dev,
850 struct device_attribute *attr,
851 const char *buf, size_t count)
853 struct idxd_wq *wq = confdev_to_wq(dev);
854 struct idxd_device *idxd = wq->idxd;
858 rc = kstrtouint(buf, 0, &val);
862 if (val > wq->size || val <= 0)
865 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
868 if (wq->state != IDXD_WQ_DISABLED)
871 if (test_bit(WQ_FLAG_DEDICATED, &wq->flags))
879 static struct device_attribute dev_attr_wq_threshold =
880 __ATTR(threshold, 0644, wq_threshold_show, wq_threshold_store);
882 static ssize_t wq_type_show(struct device *dev,
883 struct device_attribute *attr, char *buf)
885 struct idxd_wq *wq = confdev_to_wq(dev);
888 case IDXD_WQT_KERNEL:
889 return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_KERNEL]);
891 return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_USER]);
894 return sysfs_emit(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_NONE]);
900 static ssize_t wq_type_store(struct device *dev,
901 struct device_attribute *attr, const char *buf,
904 struct idxd_wq *wq = confdev_to_wq(dev);
905 enum idxd_wq_type old_type;
907 if (wq->state != IDXD_WQ_DISABLED)
911 if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_NONE]))
912 wq->type = IDXD_WQT_NONE;
913 else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_KERNEL]))
914 wq->type = IDXD_WQT_KERNEL;
915 else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER]))
916 wq->type = IDXD_WQT_USER;
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);
927 static struct device_attribute dev_attr_wq_type =
928 __ATTR(type, 0644, wq_type_show, wq_type_store);
930 static ssize_t wq_name_show(struct device *dev,
931 struct device_attribute *attr, char *buf)
933 struct idxd_wq *wq = confdev_to_wq(dev);
935 return sysfs_emit(buf, "%s\n", wq->name);
938 static ssize_t wq_name_store(struct device *dev,
939 struct device_attribute *attr, const char *buf,
942 struct idxd_wq *wq = confdev_to_wq(dev);
945 if (wq->state != IDXD_WQ_DISABLED)
948 if (strlen(buf) > WQ_NAME_SIZE || strlen(buf) == 0)
952 * This is temporarily placed here until we have SVM support for
955 if (wq->type == IDXD_WQT_KERNEL && device_pasid_enabled(wq->idxd))
958 input = kstrndup(buf, count, GFP_KERNEL);
963 memset(wq->name, 0, WQ_NAME_SIZE + 1);
964 sprintf(wq->name, "%s", pos);
969 static struct device_attribute dev_attr_wq_name =
970 __ATTR(name, 0644, wq_name_show, wq_name_store);
972 static ssize_t wq_cdev_minor_show(struct device *dev,
973 struct device_attribute *attr, char *buf)
975 struct idxd_wq *wq = confdev_to_wq(dev);
978 mutex_lock(&wq->wq_lock);
980 minor = wq->idxd_cdev->minor;
981 mutex_unlock(&wq->wq_lock);
985 return sysfs_emit(buf, "%d\n", minor);
988 static struct device_attribute dev_attr_wq_cdev_minor =
989 __ATTR(cdev_minor, 0444, wq_cdev_minor_show, NULL);
991 static int __get_sysfs_u64(const char *buf, u64 *val)
995 rc = kstrtou64(buf, 0, val);
1002 *val = roundup_pow_of_two(*val);
1006 static ssize_t wq_max_transfer_size_show(struct device *dev, struct device_attribute *attr,
1009 struct idxd_wq *wq = confdev_to_wq(dev);
1011 return sysfs_emit(buf, "%llu\n", wq->max_xfer_bytes);
1014 static ssize_t wq_max_transfer_size_store(struct device *dev, struct device_attribute *attr,
1015 const char *buf, size_t count)
1017 struct idxd_wq *wq = confdev_to_wq(dev);
1018 struct idxd_device *idxd = wq->idxd;
1022 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1025 if (wq->state != IDXD_WQ_DISABLED)
1028 rc = __get_sysfs_u64(buf, &xfer_size);
1032 if (xfer_size > idxd->max_xfer_bytes)
1035 wq->max_xfer_bytes = xfer_size;
1040 static struct device_attribute dev_attr_wq_max_transfer_size =
1041 __ATTR(max_transfer_size, 0644,
1042 wq_max_transfer_size_show, wq_max_transfer_size_store);
1044 static ssize_t wq_max_batch_size_show(struct device *dev, struct device_attribute *attr, char *buf)
1046 struct idxd_wq *wq = confdev_to_wq(dev);
1048 return sysfs_emit(buf, "%u\n", wq->max_batch_size);
1051 static ssize_t wq_max_batch_size_store(struct device *dev, struct device_attribute *attr,
1052 const char *buf, size_t count)
1054 struct idxd_wq *wq = confdev_to_wq(dev);
1055 struct idxd_device *idxd = wq->idxd;
1059 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1062 if (wq->state != IDXD_WQ_DISABLED)
1065 rc = __get_sysfs_u64(buf, &batch_size);
1069 if (batch_size > idxd->max_batch_size)
1072 idxd_wq_set_max_batch_size(idxd->data->type, wq, (u32)batch_size);
1077 static struct device_attribute dev_attr_wq_max_batch_size =
1078 __ATTR(max_batch_size, 0644, wq_max_batch_size_show, wq_max_batch_size_store);
1080 static ssize_t wq_ats_disable_show(struct device *dev, struct device_attribute *attr, char *buf)
1082 struct idxd_wq *wq = confdev_to_wq(dev);
1084 return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags));
1087 static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute *attr,
1088 const char *buf, size_t count)
1090 struct idxd_wq *wq = confdev_to_wq(dev);
1091 struct idxd_device *idxd = wq->idxd;
1095 if (wq->state != IDXD_WQ_DISABLED)
1098 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1101 rc = kstrtobool(buf, &ats_dis);
1106 set_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
1108 clear_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
1113 static struct device_attribute dev_attr_wq_ats_disable =
1114 __ATTR(ats_disable, 0644, wq_ats_disable_show, wq_ats_disable_store);
1116 static ssize_t wq_prs_disable_show(struct device *dev, struct device_attribute *attr, char *buf)
1118 struct idxd_wq *wq = confdev_to_wq(dev);
1120 return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags));
1123 static ssize_t wq_prs_disable_store(struct device *dev, struct device_attribute *attr,
1124 const char *buf, size_t count)
1126 struct idxd_wq *wq = confdev_to_wq(dev);
1127 struct idxd_device *idxd = wq->idxd;
1131 if (wq->state != IDXD_WQ_DISABLED)
1134 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1137 rc = kstrtobool(buf, &prs_dis);
1142 set_bit(WQ_FLAG_PRS_DISABLE, &wq->flags);
1143 /* when PRS is disabled, BOF needs to be off as well */
1144 clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
1146 clear_bit(WQ_FLAG_PRS_DISABLE, &wq->flags);
1151 static struct device_attribute dev_attr_wq_prs_disable =
1152 __ATTR(prs_disable, 0644, wq_prs_disable_show, wq_prs_disable_store);
1154 static ssize_t wq_occupancy_show(struct device *dev, struct device_attribute *attr, char *buf)
1156 struct idxd_wq *wq = confdev_to_wq(dev);
1157 struct idxd_device *idxd = wq->idxd;
1160 if (!idxd->hw.wq_cap.occupancy)
1163 offset = WQCFG_OFFSET(idxd, wq->id, WQCFG_OCCUP_IDX);
1164 occup = ioread32(idxd->reg_base + offset) & WQCFG_OCCUP_MASK;
1166 return sysfs_emit(buf, "%u\n", occup);
1169 static struct device_attribute dev_attr_wq_occupancy =
1170 __ATTR(occupancy, 0444, wq_occupancy_show, NULL);
1172 static ssize_t wq_enqcmds_retries_show(struct device *dev,
1173 struct device_attribute *attr, char *buf)
1175 struct idxd_wq *wq = confdev_to_wq(dev);
1177 if (wq_dedicated(wq))
1180 return sysfs_emit(buf, "%u\n", wq->enqcmds_retries);
1183 static ssize_t wq_enqcmds_retries_store(struct device *dev, struct device_attribute *attr,
1184 const char *buf, size_t count)
1186 struct idxd_wq *wq = confdev_to_wq(dev);
1188 unsigned int retries;
1190 if (wq_dedicated(wq))
1193 rc = kstrtouint(buf, 10, &retries);
1197 if (retries > IDXD_ENQCMDS_MAX_RETRIES)
1198 retries = IDXD_ENQCMDS_MAX_RETRIES;
1200 wq->enqcmds_retries = retries;
1204 static struct device_attribute dev_attr_wq_enqcmds_retries =
1205 __ATTR(enqcmds_retries, 0644, wq_enqcmds_retries_show, wq_enqcmds_retries_store);
1207 static ssize_t wq_op_config_show(struct device *dev,
1208 struct device_attribute *attr, char *buf)
1210 struct idxd_wq *wq = confdev_to_wq(dev);
1212 return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, wq->opcap_bmap);
1215 static int idxd_verify_supported_opcap(struct idxd_device *idxd, unsigned long *opmask)
1220 * The OPCAP is defined as 256 bits that represents each operation the device
1221 * supports per bit. Iterate through all the bits and check if the input mask
1222 * is set for bits that are not set in the OPCAP for the device. If no OPCAP
1223 * bit is set and input mask has the bit set, then return error.
1225 for_each_set_bit(bit, opmask, IDXD_MAX_OPCAP_BITS) {
1226 if (!test_bit(bit, idxd->opcap_bmap))
1233 static ssize_t wq_op_config_store(struct device *dev, struct device_attribute *attr,
1234 const char *buf, size_t count)
1236 struct idxd_wq *wq = confdev_to_wq(dev);
1237 struct idxd_device *idxd = wq->idxd;
1238 unsigned long *opmask;
1241 if (wq->state != IDXD_WQ_DISABLED)
1244 opmask = bitmap_zalloc(IDXD_MAX_OPCAP_BITS, GFP_KERNEL);
1248 rc = bitmap_parse(buf, count, opmask, IDXD_MAX_OPCAP_BITS);
1252 rc = idxd_verify_supported_opcap(idxd, opmask);
1256 bitmap_copy(wq->opcap_bmap, opmask, IDXD_MAX_OPCAP_BITS);
1258 bitmap_free(opmask);
1262 bitmap_free(opmask);
1266 static struct device_attribute dev_attr_wq_op_config =
1267 __ATTR(op_config, 0644, wq_op_config_show, wq_op_config_store);
1269 static struct attribute *idxd_wq_attributes[] = {
1270 &dev_attr_wq_clients.attr,
1271 &dev_attr_wq_state.attr,
1272 &dev_attr_wq_group_id.attr,
1273 &dev_attr_wq_mode.attr,
1274 &dev_attr_wq_size.attr,
1275 &dev_attr_wq_priority.attr,
1276 &dev_attr_wq_block_on_fault.attr,
1277 &dev_attr_wq_threshold.attr,
1278 &dev_attr_wq_type.attr,
1279 &dev_attr_wq_name.attr,
1280 &dev_attr_wq_cdev_minor.attr,
1281 &dev_attr_wq_max_transfer_size.attr,
1282 &dev_attr_wq_max_batch_size.attr,
1283 &dev_attr_wq_ats_disable.attr,
1284 &dev_attr_wq_prs_disable.attr,
1285 &dev_attr_wq_occupancy.attr,
1286 &dev_attr_wq_enqcmds_retries.attr,
1287 &dev_attr_wq_op_config.attr,
1291 /* A WQ attr is invisible if the feature is not supported in WQCAP. */
1292 #define idxd_wq_attr_invisible(name, cap_field, a, idxd) \
1293 ((a) == &dev_attr_wq_##name.attr && !(idxd)->hw.wq_cap.cap_field)
1295 static bool idxd_wq_attr_max_batch_size_invisible(struct attribute *attr,
1296 struct idxd_device *idxd)
1298 /* Intel IAA does not support batch processing, make it invisible */
1299 return attr == &dev_attr_wq_max_batch_size.attr &&
1300 idxd->data->type == IDXD_TYPE_IAX;
1303 static umode_t idxd_wq_attr_visible(struct kobject *kobj,
1304 struct attribute *attr, int n)
1306 struct device *dev = container_of(kobj, struct device, kobj);
1307 struct idxd_wq *wq = confdev_to_wq(dev);
1308 struct idxd_device *idxd = wq->idxd;
1310 if (idxd_wq_attr_invisible(op_config, op_config, attr, idxd))
1313 if (idxd_wq_attr_max_batch_size_invisible(attr, idxd))
1316 if (idxd_wq_attr_invisible(prs_disable, wq_prs_support, attr, idxd))
1319 if (idxd_wq_attr_invisible(ats_disable, wq_ats_support, attr, idxd))
1325 static const struct attribute_group idxd_wq_attribute_group = {
1326 .attrs = idxd_wq_attributes,
1327 .is_visible = idxd_wq_attr_visible,
1330 static const struct attribute_group *idxd_wq_attribute_groups[] = {
1331 &idxd_wq_attribute_group,
1335 static void idxd_conf_wq_release(struct device *dev)
1337 struct idxd_wq *wq = confdev_to_wq(dev);
1339 bitmap_free(wq->opcap_bmap);
1341 xa_destroy(&wq->upasid_xa);
1345 struct device_type idxd_wq_device_type = {
1347 .release = idxd_conf_wq_release,
1348 .groups = idxd_wq_attribute_groups,
1351 /* IDXD device attribs */
1352 static ssize_t version_show(struct device *dev, struct device_attribute *attr,
1355 struct idxd_device *idxd = confdev_to_idxd(dev);
1357 return sysfs_emit(buf, "%#x\n", idxd->hw.version);
1359 static DEVICE_ATTR_RO(version);
1361 static ssize_t max_work_queues_size_show(struct device *dev,
1362 struct device_attribute *attr,
1365 struct idxd_device *idxd = confdev_to_idxd(dev);
1367 return sysfs_emit(buf, "%u\n", idxd->max_wq_size);
1369 static DEVICE_ATTR_RO(max_work_queues_size);
1371 static ssize_t max_groups_show(struct device *dev,
1372 struct device_attribute *attr, char *buf)
1374 struct idxd_device *idxd = confdev_to_idxd(dev);
1376 return sysfs_emit(buf, "%u\n", idxd->max_groups);
1378 static DEVICE_ATTR_RO(max_groups);
1380 static ssize_t max_work_queues_show(struct device *dev,
1381 struct device_attribute *attr, char *buf)
1383 struct idxd_device *idxd = confdev_to_idxd(dev);
1385 return sysfs_emit(buf, "%u\n", idxd->max_wqs);
1387 static DEVICE_ATTR_RO(max_work_queues);
1389 static ssize_t max_engines_show(struct device *dev,
1390 struct device_attribute *attr, char *buf)
1392 struct idxd_device *idxd = confdev_to_idxd(dev);
1394 return sysfs_emit(buf, "%u\n", idxd->max_engines);
1396 static DEVICE_ATTR_RO(max_engines);
1398 static ssize_t numa_node_show(struct device *dev,
1399 struct device_attribute *attr, char *buf)
1401 struct idxd_device *idxd = confdev_to_idxd(dev);
1403 return sysfs_emit(buf, "%d\n", dev_to_node(&idxd->pdev->dev));
1405 static DEVICE_ATTR_RO(numa_node);
1407 static ssize_t max_batch_size_show(struct device *dev,
1408 struct device_attribute *attr, char *buf)
1410 struct idxd_device *idxd = confdev_to_idxd(dev);
1412 return sysfs_emit(buf, "%u\n", idxd->max_batch_size);
1414 static DEVICE_ATTR_RO(max_batch_size);
1416 static ssize_t max_transfer_size_show(struct device *dev,
1417 struct device_attribute *attr,
1420 struct idxd_device *idxd = confdev_to_idxd(dev);
1422 return sysfs_emit(buf, "%llu\n", idxd->max_xfer_bytes);
1424 static DEVICE_ATTR_RO(max_transfer_size);
1426 static ssize_t op_cap_show(struct device *dev,
1427 struct device_attribute *attr, char *buf)
1429 struct idxd_device *idxd = confdev_to_idxd(dev);
1431 return sysfs_emit(buf, "%*pb\n", IDXD_MAX_OPCAP_BITS, idxd->opcap_bmap);
1433 static DEVICE_ATTR_RO(op_cap);
1435 static ssize_t gen_cap_show(struct device *dev,
1436 struct device_attribute *attr, char *buf)
1438 struct idxd_device *idxd = confdev_to_idxd(dev);
1440 return sysfs_emit(buf, "%#llx\n", idxd->hw.gen_cap.bits);
1442 static DEVICE_ATTR_RO(gen_cap);
1444 static ssize_t configurable_show(struct device *dev,
1445 struct device_attribute *attr, char *buf)
1447 struct idxd_device *idxd = confdev_to_idxd(dev);
1449 return sysfs_emit(buf, "%u\n", test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags));
1451 static DEVICE_ATTR_RO(configurable);
1453 static ssize_t clients_show(struct device *dev,
1454 struct device_attribute *attr, char *buf)
1456 struct idxd_device *idxd = confdev_to_idxd(dev);
1459 spin_lock(&idxd->dev_lock);
1460 for (i = 0; i < idxd->max_wqs; i++) {
1461 struct idxd_wq *wq = idxd->wqs[i];
1463 count += wq->client_count;
1465 spin_unlock(&idxd->dev_lock);
1467 return sysfs_emit(buf, "%d\n", count);
1469 static DEVICE_ATTR_RO(clients);
1471 static ssize_t pasid_enabled_show(struct device *dev,
1472 struct device_attribute *attr, char *buf)
1474 struct idxd_device *idxd = confdev_to_idxd(dev);
1476 return sysfs_emit(buf, "%u\n", device_user_pasid_enabled(idxd));
1478 static DEVICE_ATTR_RO(pasid_enabled);
1480 static ssize_t state_show(struct device *dev,
1481 struct device_attribute *attr, char *buf)
1483 struct idxd_device *idxd = confdev_to_idxd(dev);
1485 switch (idxd->state) {
1486 case IDXD_DEV_DISABLED:
1487 return sysfs_emit(buf, "disabled\n");
1488 case IDXD_DEV_ENABLED:
1489 return sysfs_emit(buf, "enabled\n");
1490 case IDXD_DEV_HALTED:
1491 return sysfs_emit(buf, "halted\n");
1494 return sysfs_emit(buf, "unknown\n");
1496 static DEVICE_ATTR_RO(state);
1498 static ssize_t errors_show(struct device *dev,
1499 struct device_attribute *attr, char *buf)
1501 struct idxd_device *idxd = confdev_to_idxd(dev);
1502 DECLARE_BITMAP(swerr_bmap, 256);
1504 bitmap_zero(swerr_bmap, 256);
1505 spin_lock(&idxd->dev_lock);
1506 multi_u64_to_bmap(swerr_bmap, &idxd->sw_err.bits[0], 4);
1507 spin_unlock(&idxd->dev_lock);
1508 return sysfs_emit(buf, "%*pb\n", 256, swerr_bmap);
1510 static DEVICE_ATTR_RO(errors);
1512 static ssize_t max_read_buffers_show(struct device *dev,
1513 struct device_attribute *attr, char *buf)
1515 struct idxd_device *idxd = confdev_to_idxd(dev);
1517 return sysfs_emit(buf, "%u\n", idxd->max_rdbufs);
1520 static ssize_t max_tokens_show(struct device *dev,
1521 struct device_attribute *attr, char *buf)
1523 dev_warn_once(dev, "attribute deprecated, see max_read_buffers.\n");
1524 return max_read_buffers_show(dev, attr, buf);
1527 static DEVICE_ATTR_RO(max_tokens); /* deprecated */
1528 static DEVICE_ATTR_RO(max_read_buffers);
1530 static ssize_t read_buffer_limit_show(struct device *dev,
1531 struct device_attribute *attr, char *buf)
1533 struct idxd_device *idxd = confdev_to_idxd(dev);
1535 return sysfs_emit(buf, "%u\n", idxd->rdbuf_limit);
1538 static ssize_t token_limit_show(struct device *dev,
1539 struct device_attribute *attr, char *buf)
1541 dev_warn_once(dev, "attribute deprecated, see read_buffer_limit.\n");
1542 return read_buffer_limit_show(dev, attr, buf);
1545 static ssize_t read_buffer_limit_store(struct device *dev,
1546 struct device_attribute *attr,
1547 const char *buf, size_t count)
1549 struct idxd_device *idxd = confdev_to_idxd(dev);
1553 rc = kstrtoul(buf, 10, &val);
1557 if (idxd->state == IDXD_DEV_ENABLED)
1560 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1563 if (!idxd->hw.group_cap.rdbuf_limit)
1566 if (val > idxd->hw.group_cap.total_rdbufs)
1569 idxd->rdbuf_limit = val;
1573 static ssize_t token_limit_store(struct device *dev,
1574 struct device_attribute *attr,
1575 const char *buf, size_t count)
1577 dev_warn_once(dev, "attribute deprecated, see read_buffer_limit\n");
1578 return read_buffer_limit_store(dev, attr, buf, count);
1581 static DEVICE_ATTR_RW(token_limit); /* deprecated */
1582 static DEVICE_ATTR_RW(read_buffer_limit);
1584 static ssize_t cdev_major_show(struct device *dev,
1585 struct device_attribute *attr, char *buf)
1587 struct idxd_device *idxd = confdev_to_idxd(dev);
1589 return sysfs_emit(buf, "%u\n", idxd->major);
1591 static DEVICE_ATTR_RO(cdev_major);
1593 static ssize_t cmd_status_show(struct device *dev,
1594 struct device_attribute *attr, char *buf)
1596 struct idxd_device *idxd = confdev_to_idxd(dev);
1598 return sysfs_emit(buf, "%#x\n", idxd->cmd_status);
1601 static ssize_t cmd_status_store(struct device *dev, struct device_attribute *attr,
1602 const char *buf, size_t count)
1604 struct idxd_device *idxd = confdev_to_idxd(dev);
1606 idxd->cmd_status = 0;
1609 static DEVICE_ATTR_RW(cmd_status);
1611 static ssize_t iaa_cap_show(struct device *dev,
1612 struct device_attribute *attr, char *buf)
1614 struct idxd_device *idxd = confdev_to_idxd(dev);
1616 if (idxd->hw.version < DEVICE_VERSION_2)
1619 return sysfs_emit(buf, "%#llx\n", idxd->hw.iaa_cap.bits);
1621 static DEVICE_ATTR_RO(iaa_cap);
1623 static ssize_t event_log_size_show(struct device *dev,
1624 struct device_attribute *attr, char *buf)
1626 struct idxd_device *idxd = confdev_to_idxd(dev);
1631 return sysfs_emit(buf, "%u\n", idxd->evl->size);
1634 static ssize_t event_log_size_store(struct device *dev,
1635 struct device_attribute *attr,
1636 const char *buf, size_t count)
1638 struct idxd_device *idxd = confdev_to_idxd(dev);
1645 rc = kstrtoul(buf, 10, &val);
1649 if (idxd->state == IDXD_DEV_ENABLED)
1652 if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
1655 if (val < IDXD_EVL_SIZE_MIN || val > IDXD_EVL_SIZE_MAX ||
1656 (val * evl_ent_size(idxd) > ULONG_MAX - idxd->evl->dma))
1659 idxd->evl->size = val;
1662 static DEVICE_ATTR_RW(event_log_size);
1664 static bool idxd_device_attr_max_batch_size_invisible(struct attribute *attr,
1665 struct idxd_device *idxd)
1667 /* Intel IAA does not support batch processing, make it invisible */
1668 return attr == &dev_attr_max_batch_size.attr &&
1669 idxd->data->type == IDXD_TYPE_IAX;
1672 static bool idxd_device_attr_read_buffers_invisible(struct attribute *attr,
1673 struct idxd_device *idxd)
1676 * Intel IAA does not support Read Buffer allocation control,
1677 * make these attributes invisible.
1679 return (attr == &dev_attr_max_tokens.attr ||
1680 attr == &dev_attr_max_read_buffers.attr ||
1681 attr == &dev_attr_token_limit.attr ||
1682 attr == &dev_attr_read_buffer_limit.attr) &&
1683 idxd->data->type == IDXD_TYPE_IAX;
1686 static bool idxd_device_attr_iaa_cap_invisible(struct attribute *attr,
1687 struct idxd_device *idxd)
1689 return attr == &dev_attr_iaa_cap.attr &&
1690 (idxd->data->type != IDXD_TYPE_IAX ||
1691 idxd->hw.version < DEVICE_VERSION_2);
1694 static bool idxd_device_attr_event_log_size_invisible(struct attribute *attr,
1695 struct idxd_device *idxd)
1697 return (attr == &dev_attr_event_log_size.attr &&
1698 !idxd->hw.gen_cap.evl_support);
1701 static umode_t idxd_device_attr_visible(struct kobject *kobj,
1702 struct attribute *attr, int n)
1704 struct device *dev = container_of(kobj, struct device, kobj);
1705 struct idxd_device *idxd = confdev_to_idxd(dev);
1707 if (idxd_device_attr_max_batch_size_invisible(attr, idxd))
1710 if (idxd_device_attr_read_buffers_invisible(attr, idxd))
1713 if (idxd_device_attr_iaa_cap_invisible(attr, idxd))
1716 if (idxd_device_attr_event_log_size_invisible(attr, idxd))
1722 static struct attribute *idxd_device_attributes[] = {
1723 &dev_attr_version.attr,
1724 &dev_attr_max_groups.attr,
1725 &dev_attr_max_work_queues.attr,
1726 &dev_attr_max_work_queues_size.attr,
1727 &dev_attr_max_engines.attr,
1728 &dev_attr_numa_node.attr,
1729 &dev_attr_max_batch_size.attr,
1730 &dev_attr_max_transfer_size.attr,
1731 &dev_attr_op_cap.attr,
1732 &dev_attr_gen_cap.attr,
1733 &dev_attr_configurable.attr,
1734 &dev_attr_clients.attr,
1735 &dev_attr_pasid_enabled.attr,
1736 &dev_attr_state.attr,
1737 &dev_attr_errors.attr,
1738 &dev_attr_max_tokens.attr,
1739 &dev_attr_max_read_buffers.attr,
1740 &dev_attr_token_limit.attr,
1741 &dev_attr_read_buffer_limit.attr,
1742 &dev_attr_cdev_major.attr,
1743 &dev_attr_cmd_status.attr,
1744 &dev_attr_iaa_cap.attr,
1745 &dev_attr_event_log_size.attr,
1749 static const struct attribute_group idxd_device_attribute_group = {
1750 .attrs = idxd_device_attributes,
1751 .is_visible = idxd_device_attr_visible,
1754 static const struct attribute_group *idxd_attribute_groups[] = {
1755 &idxd_device_attribute_group,
1759 static void idxd_conf_device_release(struct device *dev)
1761 struct idxd_device *idxd = confdev_to_idxd(dev);
1763 kfree(idxd->groups);
1764 bitmap_free(idxd->wq_enable_map);
1766 kfree(idxd->engines);
1768 kmem_cache_destroy(idxd->evl_cache);
1769 ida_free(&idxd_ida, idxd->id);
1770 bitmap_free(idxd->opcap_bmap);
1774 struct device_type dsa_device_type = {
1776 .release = idxd_conf_device_release,
1777 .groups = idxd_attribute_groups,
1780 struct device_type iax_device_type = {
1782 .release = idxd_conf_device_release,
1783 .groups = idxd_attribute_groups,
1786 static int idxd_register_engine_devices(struct idxd_device *idxd)
1788 struct idxd_engine *engine;
1791 for (i = 0; i < idxd->max_engines; i++) {
1792 engine = idxd->engines[i];
1793 rc = device_add(engine_confdev(engine));
1802 for (; i < idxd->max_engines; i++) {
1803 engine = idxd->engines[i];
1804 put_device(engine_confdev(engine));
1808 engine = idxd->engines[j];
1809 device_unregister(engine_confdev(engine));
1814 static int idxd_register_group_devices(struct idxd_device *idxd)
1816 struct idxd_group *group;
1819 for (i = 0; i < idxd->max_groups; i++) {
1820 group = idxd->groups[i];
1821 rc = device_add(group_confdev(group));
1830 for (; i < idxd->max_groups; i++) {
1831 group = idxd->groups[i];
1832 put_device(group_confdev(group));
1836 group = idxd->groups[j];
1837 device_unregister(group_confdev(group));
1842 static int idxd_register_wq_devices(struct idxd_device *idxd)
1847 for (i = 0; i < idxd->max_wqs; i++) {
1849 rc = device_add(wq_confdev(wq));
1858 for (; i < idxd->max_wqs; i++) {
1860 put_device(wq_confdev(wq));
1865 device_unregister(wq_confdev(wq));
1870 int idxd_register_devices(struct idxd_device *idxd)
1872 struct device *dev = &idxd->pdev->dev;
1875 rc = device_add(idxd_confdev(idxd));
1879 rc = idxd_register_wq_devices(idxd);
1881 dev_dbg(dev, "WQ devices registering failed: %d\n", rc);
1885 rc = idxd_register_engine_devices(idxd);
1887 dev_dbg(dev, "Engine devices registering failed: %d\n", rc);
1891 rc = idxd_register_group_devices(idxd);
1893 dev_dbg(dev, "Group device registering failed: %d\n", rc);
1900 for (i = 0; i < idxd->max_engines; i++)
1901 device_unregister(engine_confdev(idxd->engines[i]));
1903 for (i = 0; i < idxd->max_wqs; i++)
1904 device_unregister(wq_confdev(idxd->wqs[i]));
1906 device_del(idxd_confdev(idxd));
1910 void idxd_unregister_devices(struct idxd_device *idxd)
1914 for (i = 0; i < idxd->max_wqs; i++) {
1915 struct idxd_wq *wq = idxd->wqs[i];
1917 device_unregister(wq_confdev(wq));
1920 for (i = 0; i < idxd->max_engines; i++) {
1921 struct idxd_engine *engine = idxd->engines[i];
1923 device_unregister(engine_confdev(engine));
1926 for (i = 0; i < idxd->max_groups; i++) {
1927 struct idxd_group *group = idxd->groups[i];
1929 device_unregister(group_confdev(group));
1933 int idxd_register_bus_type(void)
1935 return bus_register(&dsa_bus_type);
1938 void idxd_unregister_bus_type(void)
1940 bus_unregister(&dsa_bus_type);