2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * $Id: sysfs.c 1349 2004-12-16 21:09:43Z roland $
37 #include "core_priv.h"
39 #include <rdma/ib_mad.h>
43 struct ib_device *ibdev;
44 struct attribute_group gid_group;
45 struct attribute_group pkey_group;
49 struct port_attribute {
50 struct attribute attr;
51 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
52 ssize_t (*store)(struct ib_port *, struct port_attribute *,
53 const char *buf, size_t count);
56 #define PORT_ATTR(_name, _mode, _show, _store) \
57 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
59 #define PORT_ATTR_RO(_name) \
60 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
62 struct port_table_attribute {
63 struct port_attribute attr;
68 static ssize_t port_attr_show(struct kobject *kobj,
69 struct attribute *attr, char *buf)
71 struct port_attribute *port_attr =
72 container_of(attr, struct port_attribute, attr);
73 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
78 return port_attr->show(p, port_attr, buf);
81 static struct sysfs_ops port_sysfs_ops = {
82 .show = port_attr_show
85 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
88 struct ib_port_attr attr;
91 static const char *state_name[] = {
92 [IB_PORT_NOP] = "NOP",
93 [IB_PORT_DOWN] = "DOWN",
94 [IB_PORT_INIT] = "INIT",
95 [IB_PORT_ARMED] = "ARMED",
96 [IB_PORT_ACTIVE] = "ACTIVE",
97 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
100 ret = ib_query_port(p->ibdev, p->port_num, &attr);
104 return sprintf(buf, "%d: %s\n", attr.state,
105 attr.state >= 0 && attr.state <= ARRAY_SIZE(state_name) ?
106 state_name[attr.state] : "UNKNOWN");
109 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
112 struct ib_port_attr attr;
115 ret = ib_query_port(p->ibdev, p->port_num, &attr);
119 return sprintf(buf, "0x%x\n", attr.lid);
122 static ssize_t lid_mask_count_show(struct ib_port *p,
123 struct port_attribute *unused,
126 struct ib_port_attr attr;
129 ret = ib_query_port(p->ibdev, p->port_num, &attr);
133 return sprintf(buf, "%d\n", attr.lmc);
136 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
139 struct ib_port_attr attr;
142 ret = ib_query_port(p->ibdev, p->port_num, &attr);
146 return sprintf(buf, "0x%x\n", attr.sm_lid);
149 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
152 struct ib_port_attr attr;
155 ret = ib_query_port(p->ibdev, p->port_num, &attr);
159 return sprintf(buf, "%d\n", attr.sm_sl);
162 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
165 struct ib_port_attr attr;
168 ret = ib_query_port(p->ibdev, p->port_num, &attr);
172 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
175 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
178 struct ib_port_attr attr;
183 ret = ib_query_port(p->ibdev, p->port_num, &attr);
187 switch (attr.active_speed) {
188 case 2: speed = " DDR"; break;
189 case 4: speed = " QDR"; break;
192 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
196 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
197 rate / 10, rate % 10 ? ".5" : "",
198 ib_width_enum_to_int(attr.active_width), speed);
201 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
204 struct ib_port_attr attr;
208 ret = ib_query_port(p->ibdev, p->port_num, &attr);
212 switch (attr.phys_state) {
213 case 1: return sprintf(buf, "1: Sleep\n");
214 case 2: return sprintf(buf, "2: Polling\n");
215 case 3: return sprintf(buf, "3: Disabled\n");
216 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
217 case 5: return sprintf(buf, "5: LinkUp\n");
218 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
219 case 7: return sprintf(buf, "7: Phy Test\n");
220 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
224 static PORT_ATTR_RO(state);
225 static PORT_ATTR_RO(lid);
226 static PORT_ATTR_RO(lid_mask_count);
227 static PORT_ATTR_RO(sm_lid);
228 static PORT_ATTR_RO(sm_sl);
229 static PORT_ATTR_RO(cap_mask);
230 static PORT_ATTR_RO(rate);
231 static PORT_ATTR_RO(phys_state);
233 static struct attribute *port_default_attrs[] = {
234 &port_attr_state.attr,
236 &port_attr_lid_mask_count.attr,
237 &port_attr_sm_lid.attr,
238 &port_attr_sm_sl.attr,
239 &port_attr_cap_mask.attr,
240 &port_attr_rate.attr,
241 &port_attr_phys_state.attr,
245 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
248 struct port_table_attribute *tab_attr =
249 container_of(attr, struct port_table_attribute, attr);
253 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
257 return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
258 be16_to_cpu(((__be16 *) gid.raw)[0]),
259 be16_to_cpu(((__be16 *) gid.raw)[1]),
260 be16_to_cpu(((__be16 *) gid.raw)[2]),
261 be16_to_cpu(((__be16 *) gid.raw)[3]),
262 be16_to_cpu(((__be16 *) gid.raw)[4]),
263 be16_to_cpu(((__be16 *) gid.raw)[5]),
264 be16_to_cpu(((__be16 *) gid.raw)[6]),
265 be16_to_cpu(((__be16 *) gid.raw)[7]));
268 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
271 struct port_table_attribute *tab_attr =
272 container_of(attr, struct port_table_attribute, attr);
276 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
280 return sprintf(buf, "0x%04x\n", pkey);
283 #define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
284 struct port_table_attribute port_pma_attr_##_name = { \
285 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
286 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
289 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
292 struct port_table_attribute *tab_attr =
293 container_of(attr, struct port_table_attribute, attr);
294 int offset = tab_attr->index & 0xffff;
295 int width = (tab_attr->index >> 16) & 0xff;
296 struct ib_mad *in_mad = NULL;
297 struct ib_mad *out_mad = NULL;
300 if (!p->ibdev->process_mad)
301 return sprintf(buf, "N/A (no PMA)\n");
303 in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
304 out_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
305 if (!in_mad || !out_mad) {
310 memset(in_mad, 0, sizeof *in_mad);
311 in_mad->mad_hdr.base_version = 1;
312 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
313 in_mad->mad_hdr.class_version = 1;
314 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
315 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
317 in_mad->data[41] = p->port_num; /* PortSelect field */
319 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
320 p->port_num, NULL, NULL, in_mad, out_mad) &
321 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
322 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
329 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
330 (offset % 4)) & 0xf);
333 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
336 ret = sprintf(buf, "%u\n",
337 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
340 ret = sprintf(buf, "%u\n",
341 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
354 static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
355 static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
356 static PORT_PMA_ATTR(link_downed , 2, 8, 56);
357 static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
358 static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
359 static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
360 static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
361 static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
362 static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
363 static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
364 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
365 static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
366 static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
367 static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
368 static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
369 static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
371 static struct attribute *pma_attrs[] = {
372 &port_pma_attr_symbol_error.attr.attr,
373 &port_pma_attr_link_error_recovery.attr.attr,
374 &port_pma_attr_link_downed.attr.attr,
375 &port_pma_attr_port_rcv_errors.attr.attr,
376 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
377 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
378 &port_pma_attr_port_xmit_discards.attr.attr,
379 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
380 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
381 &port_pma_attr_local_link_integrity_errors.attr.attr,
382 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
383 &port_pma_attr_VL15_dropped.attr.attr,
384 &port_pma_attr_port_xmit_data.attr.attr,
385 &port_pma_attr_port_rcv_data.attr.attr,
386 &port_pma_attr_port_xmit_packets.attr.attr,
387 &port_pma_attr_port_rcv_packets.attr.attr,
391 static struct attribute_group pma_group = {
396 static void ib_port_release(struct kobject *kobj)
398 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
402 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
405 kfree(p->gid_group.attrs);
407 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
410 kfree(p->pkey_group.attrs);
415 static struct kobj_type port_type = {
416 .release = ib_port_release,
417 .sysfs_ops = &port_sysfs_ops,
418 .default_attrs = port_default_attrs
421 static void ib_device_release(struct class_device *cdev)
423 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
428 static int ib_device_hotplug(struct class_device *cdev, char **envp,
429 int num_envp, char *buf, int size)
431 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
434 if (add_hotplug_env_var(envp, num_envp, &i, buf, size, &len,
435 "NAME=%s", dev->name))
439 * It might be nice to pass the node GUID to hotplug, but
440 * right now the only way to get it is to query the device
441 * provider, and this can crash during device removal because
442 * we are will be running after driver removal has started.
443 * We could add a node_guid field to struct ib_device, or we
444 * could just let the hotplug script read the node GUID from
445 * sysfs when devices are added.
452 static struct attribute **
453 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
454 struct port_attribute *, char *buf),
457 struct attribute **tab_attr;
458 struct port_table_attribute *element;
461 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
465 for (i = 0; i < len; i++) {
466 element = kzalloc(sizeof(struct port_table_attribute),
471 if (snprintf(element->name, sizeof(element->name),
472 "%d", i) >= sizeof(element->name))
475 element->attr.attr.name = element->name;
476 element->attr.attr.mode = S_IRUGO;
477 element->attr.attr.owner = THIS_MODULE;
478 element->attr.show = show;
481 tab_attr[i] = &element->attr.attr;
493 static int add_port(struct ib_device *device, int port_num)
496 struct ib_port_attr attr;
500 ret = ib_query_port(device, port_num, &attr);
504 p = kmalloc(sizeof *p, GFP_KERNEL);
507 memset(p, 0, sizeof *p);
510 p->port_num = port_num;
511 p->kobj.ktype = &port_type;
513 p->kobj.parent = kobject_get(&device->ports_parent);
514 if (!p->kobj.parent) {
519 ret = kobject_set_name(&p->kobj, "%d", port_num);
523 ret = kobject_register(&p->kobj);
527 ret = sysfs_create_group(&p->kobj, &pma_group);
531 p->gid_group.name = "gids";
532 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
533 if (!p->gid_group.attrs)
536 ret = sysfs_create_group(&p->kobj, &p->gid_group);
540 p->pkey_group.name = "pkeys";
541 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
543 if (!p->pkey_group.attrs)
546 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
550 list_add_tail(&p->kobj.entry, &device->port_list);
555 for (i = 0; i < attr.pkey_tbl_len; ++i)
556 kfree(p->pkey_group.attrs[i]);
558 kfree(p->pkey_group.attrs);
561 sysfs_remove_group(&p->kobj, &p->gid_group);
564 for (i = 0; i < attr.gid_tbl_len; ++i)
565 kfree(p->gid_group.attrs[i]);
567 kfree(p->gid_group.attrs);
570 sysfs_remove_group(&p->kobj, &pma_group);
573 kobject_put(&device->ports_parent);
580 static ssize_t show_node_type(struct class_device *cdev, char *buf)
582 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
584 switch (dev->node_type) {
585 case IB_NODE_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
586 case IB_NODE_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
587 case IB_NODE_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
588 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
592 static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf)
594 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
595 struct ib_device_attr attr;
598 ret = ib_query_device(dev, &attr);
602 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
603 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
604 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
605 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
606 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
609 static ssize_t show_node_guid(struct class_device *cdev, char *buf)
611 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
612 struct ib_device_attr attr;
615 ret = ib_query_device(dev, &attr);
619 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
620 be16_to_cpu(((__be16 *) &attr.node_guid)[0]),
621 be16_to_cpu(((__be16 *) &attr.node_guid)[1]),
622 be16_to_cpu(((__be16 *) &attr.node_guid)[2]),
623 be16_to_cpu(((__be16 *) &attr.node_guid)[3]));
626 static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
627 static CLASS_DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
628 static CLASS_DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
630 static struct class_device_attribute *ib_class_attributes[] = {
631 &class_device_attr_node_type,
632 &class_device_attr_sys_image_guid,
633 &class_device_attr_node_guid
636 static struct class ib_class = {
637 .name = "infiniband",
638 .release = ib_device_release,
639 .hotplug = ib_device_hotplug,
642 int ib_device_register_sysfs(struct ib_device *device)
644 struct class_device *class_dev = &device->class_dev;
648 class_dev->class = &ib_class;
649 class_dev->class_data = device;
650 strlcpy(class_dev->class_id, device->name, BUS_ID_SIZE);
652 INIT_LIST_HEAD(&device->port_list);
654 ret = class_device_register(class_dev);
658 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
659 ret = class_device_create_file(class_dev, ib_class_attributes[i]);
664 device->ports_parent.parent = kobject_get(&class_dev->kobj);
665 if (!device->ports_parent.parent) {
669 ret = kobject_set_name(&device->ports_parent, "ports");
672 ret = kobject_register(&device->ports_parent);
676 if (device->node_type == IB_NODE_SWITCH) {
677 ret = add_port(device, 0);
683 for (i = 1; i <= device->phys_port_cnt; ++i) {
684 ret = add_port(device, i);
694 struct kobject *p, *t;
695 struct ib_port *port;
697 list_for_each_entry_safe(p, t, &device->port_list, entry) {
699 port = container_of(p, struct ib_port, kobj);
700 sysfs_remove_group(p, &pma_group);
701 sysfs_remove_group(p, &port->pkey_group);
702 sysfs_remove_group(p, &port->gid_group);
703 kobject_unregister(p);
707 kobject_put(&class_dev->kobj);
710 class_device_unregister(class_dev);
716 void ib_device_unregister_sysfs(struct ib_device *device)
718 struct kobject *p, *t;
719 struct ib_port *port;
721 list_for_each_entry_safe(p, t, &device->port_list, entry) {
723 port = container_of(p, struct ib_port, kobj);
724 sysfs_remove_group(p, &pma_group);
725 sysfs_remove_group(p, &port->pkey_group);
726 sysfs_remove_group(p, &port->gid_group);
727 kobject_unregister(p);
730 kobject_unregister(&device->ports_parent);
731 class_device_unregister(&device->class_dev);
734 int ib_sysfs_setup(void)
736 return class_register(&ib_class);
739 void ib_sysfs_cleanup(void)
741 class_unregister(&ib_class);