projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
IB/mthca: Factor common MAD initialization code
[deliverable/linux.git] / drivers / infiniband / core / sysfs.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
2a1d9b7f
RD		 3 * Copyright (c) 2005 Mellanox Technologies Ltd. All rights reserved.
4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
1da177e4
LT		 5 *
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:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
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.
24 *
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
32 * SOFTWARE.
33 *
34 * $Id: sysfs.c 1349 2004-12-16 21:09:43Z roland $
35 */
36
37#include "core_priv.h"
38
8c65b4a6
TS		 39#include <linux/slab.h>
40#include <linux/string.h>
41
a4d61e84 42#include <rdma/ib_mad.h>
1da177e4
LT		 43
44struct ib_port {
45 struct kobject kobj;
46 struct ib_device *ibdev;
47 struct attribute_group gid_group;
1da177e4 48 struct attribute_group pkey_group;
1da177e4
LT		 49 u8 port_num;
50};
51
52struct port_attribute {
53 struct attribute attr;
54 ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
55 ssize_t (*store)(struct ib_port *, struct port_attribute *,
56 const char *buf, size_t count);
57};
58
59#define PORT_ATTR(_name, _mode, _show, _store) \
60struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
61
62#define PORT_ATTR_RO(_name) \
63struct port_attribute port_attr_##_name = __ATTR_RO(_name)
64
65struct port_table_attribute {
d48593bf
DT		 66 struct port_attribute attr;
67 char name[8];
68 int index;
1da177e4
LT		 69};
70
ba8e9310
RD		 71static inline int ibdev_is_alive(const struct ib_device *dev)
72{
73 return dev->reg_state == IB_DEV_REGISTERED;
74}
75
1da177e4
LT		 76static ssize_t port_attr_show(struct kobject *kobj,
77 struct attribute *attr, char *buf)
78{
79 struct port_attribute *port_attr =
80 container_of(attr, struct port_attribute, attr);
81 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
82
83 if (!port_attr->show)
70f2817a 84 return -EIO;
ba8e9310
RD		 85 if (!ibdev_is_alive(p->ibdev))
86 return -ENODEV;
1da177e4
LT		 87
88 return port_attr->show(p, port_attr, buf);
89}
90
91static struct sysfs_ops port_sysfs_ops = {
92 .show = port_attr_show
93};
94
95static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
96 char *buf)
97{
98 struct ib_port_attr attr;
99 ssize_t ret;
100
101 static const char *state_name[] = {
102 [IB_PORT_NOP] = "NOP",
103 [IB_PORT_DOWN] = "DOWN",
104 [IB_PORT_INIT] = "INIT",
105 [IB_PORT_ARMED] = "ARMED",
106 [IB_PORT_ACTIVE] = "ACTIVE",
107 [IB_PORT_ACTIVE_DEFER] = "ACTIVE_DEFER"
108 };
109
110 ret = ib_query_port(p->ibdev, p->port_num, &attr);
111 if (ret)
112 return ret;
113
114 return sprintf(buf, "%d: %s\n", attr.state,
115 attr.state >= 0 && attr.state <= ARRAY_SIZE(state_name) ?
116 state_name[attr.state] : "UNKNOWN");
117}
118
119static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
120 char *buf)
121{
122 struct ib_port_attr attr;
123 ssize_t ret;
124
125 ret = ib_query_port(p->ibdev, p->port_num, &attr);
126 if (ret)
127 return ret;
128
129 return sprintf(buf, "0x%x\n", attr.lid);
130}
131
132static ssize_t lid_mask_count_show(struct ib_port *p,
133 struct port_attribute *unused,
134 char *buf)
135{
136 struct ib_port_attr attr;
137 ssize_t ret;
138
139 ret = ib_query_port(p->ibdev, p->port_num, &attr);
140 if (ret)
141 return ret;
142
143 return sprintf(buf, "%d\n", attr.lmc);
144}
145
146static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
147 char *buf)
148{
149 struct ib_port_attr attr;
150 ssize_t ret;
151
152 ret = ib_query_port(p->ibdev, p->port_num, &attr);
153 if (ret)
154 return ret;
155
156 return sprintf(buf, "0x%x\n", attr.sm_lid);
157}
158
159static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
160 char *buf)
161{
162 struct ib_port_attr attr;
163 ssize_t ret;
164
165 ret = ib_query_port(p->ibdev, p->port_num, &attr);
166 if (ret)
167 return ret;
168
169 return sprintf(buf, "%d\n", attr.sm_sl);
170}
171
172static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
173 char *buf)
174{
175 struct ib_port_attr attr;
176 ssize_t ret;
177
178 ret = ib_query_port(p->ibdev, p->port_num, &attr);
179 if (ret)
180 return ret;
181
182 return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
183}
184
185static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
186 char *buf)
187{
188 struct ib_port_attr attr;
189 char *speed = "";
190 int rate;
191 ssize_t ret;
192
193 ret = ib_query_port(p->ibdev, p->port_num, &attr);
194 if (ret)
195 return ret;
196
197 switch (attr.active_speed) {
198 case 2: speed = " DDR"; break;
199 case 4: speed = " QDR"; break;
200 }
201
202 rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
203 if (rate < 0)
204 return -EINVAL;
205
206 return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
207 rate / 10, rate % 10 ? ".5" : "",
208 ib_width_enum_to_int(attr.active_width), speed);
209}
210
211static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
212 char *buf)
213{
214 struct ib_port_attr attr;
215
216 ssize_t ret;
217
218 ret = ib_query_port(p->ibdev, p->port_num, &attr);
219 if (ret)
220 return ret;
221
222 switch (attr.phys_state) {
223 case 1: return sprintf(buf, "1: Sleep\n");
224 case 2: return sprintf(buf, "2: Polling\n");
225 case 3: return sprintf(buf, "3: Disabled\n");
226 case 4: return sprintf(buf, "4: PortConfigurationTraining\n");
227 case 5: return sprintf(buf, "5: LinkUp\n");
228 case 6: return sprintf(buf, "6: LinkErrorRecovery\n");
229 case 7: return sprintf(buf, "7: Phy Test\n");
230 default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
231 }
232}
233
234static PORT_ATTR_RO(state);
235static PORT_ATTR_RO(lid);
236static PORT_ATTR_RO(lid_mask_count);
237static PORT_ATTR_RO(sm_lid);
238static PORT_ATTR_RO(sm_sl);
239static PORT_ATTR_RO(cap_mask);
240static PORT_ATTR_RO(rate);
241static PORT_ATTR_RO(phys_state);
242
243static struct attribute *port_default_attrs[] = {
244 &port_attr_state.attr,
245 &port_attr_lid.attr,
246 &port_attr_lid_mask_count.attr,
247 &port_attr_sm_lid.attr,
248 &port_attr_sm_sl.attr,
249 &port_attr_cap_mask.attr,
250 &port_attr_rate.attr,
251 &port_attr_phys_state.attr,
252 NULL
253};
254
255static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
256 char *buf)
257{
258 struct port_table_attribute *tab_attr =
259 container_of(attr, struct port_table_attribute, attr);
260 union ib_gid gid;
261 ssize_t ret;
262
263 ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
264 if (ret)
265 return ret;
266
267 return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
97f52eb4
SH		 268 be16_to_cpu(((__be16 *) gid.raw)[0]),
269 be16_to_cpu(((__be16 *) gid.raw)[1]),
270 be16_to_cpu(((__be16 *) gid.raw)[2]),
271 be16_to_cpu(((__be16 *) gid.raw)[3]),
272 be16_to_cpu(((__be16 *) gid.raw)[4]),
273 be16_to_cpu(((__be16 *) gid.raw)[5]),
274 be16_to_cpu(((__be16 *) gid.raw)[6]),
275 be16_to_cpu(((__be16 *) gid.raw)[7]));
1da177e4
LT		 276}
277
278static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
279 char *buf)
280{
281 struct port_table_attribute *tab_attr =
282 container_of(attr, struct port_table_attribute, attr);
283 u16 pkey;
284 ssize_t ret;
285
286 ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
287 if (ret)
288 return ret;
289
290 return sprintf(buf, "0x%04x\n", pkey);
291}
292
293#define PORT_PMA_ATTR(_name, _counter, _width, _offset) \
294struct port_table_attribute port_pma_attr_##_name = { \
295 .attr = __ATTR(_name, S_IRUGO, show_pma_counter, NULL), \
296 .index = (_offset) | ((_width) << 16) | ((_counter) << 24) \
297}
298
299static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
300 char *buf)
301{
302 struct port_table_attribute *tab_attr =
303 container_of(attr, struct port_table_attribute, attr);
304 int offset = tab_attr->index & 0xffff;
305 int width = (tab_attr->index >> 16) & 0xff;
306 struct ib_mad *in_mad = NULL;
307 struct ib_mad *out_mad = NULL;
308 ssize_t ret;
309
310 if (!p->ibdev->process_mad)
311 return sprintf(buf, "N/A (no PMA)\n");
312
de6eb66b 313 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
1da177e4
LT		 314 out_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
315 if (!in_mad || !out_mad) {
316 ret = -ENOMEM;
317 goto out;
318 }
319
1da177e4
LT		 320 in_mad->mad_hdr.base_version = 1;
321 in_mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_PERF_MGMT;
322 in_mad->mad_hdr.class_version = 1;
323 in_mad->mad_hdr.method = IB_MGMT_METHOD_GET;
324 in_mad->mad_hdr.attr_id = cpu_to_be16(0x12); /* PortCounters */
325
326 in_mad->data[41] = p->port_num; /* PortSelect field */
327
328 if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
329 p->port_num, NULL, NULL, in_mad, out_mad) &
330 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
331 (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
332 ret = -EINVAL;
333 goto out;
334 }
335
336 switch (width) {
337 case 4:
338 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
339 (offset % 4)) & 0xf);
340 break;
341 case 8:
342 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
343 break;
344 case 16:
345 ret = sprintf(buf, "%u\n",
97f52eb4 346 be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
1da177e4
LT		 347 break;
348 case 32:
349 ret = sprintf(buf, "%u\n",
97f52eb4 350 be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
1da177e4
LT		 351 break;
352 default:
353 ret = 0;
354 }
355
356out:
357 kfree(in_mad);
358 kfree(out_mad);
359
360 return ret;
361}
362
363static PORT_PMA_ATTR(symbol_error , 0, 16, 32);
364static PORT_PMA_ATTR(link_error_recovery , 1, 8, 48);
365static PORT_PMA_ATTR(link_downed , 2, 8, 56);
366static PORT_PMA_ATTR(port_rcv_errors , 3, 16, 64);
367static PORT_PMA_ATTR(port_rcv_remote_physical_errors, 4, 16, 80);
368static PORT_PMA_ATTR(port_rcv_switch_relay_errors , 5, 16, 96);
369static PORT_PMA_ATTR(port_xmit_discards , 6, 16, 112);
370static PORT_PMA_ATTR(port_xmit_constraint_errors , 7, 8, 128);
371static PORT_PMA_ATTR(port_rcv_constraint_errors , 8, 8, 136);
372static PORT_PMA_ATTR(local_link_integrity_errors , 9, 4, 152);
373static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10, 4, 156);
374static PORT_PMA_ATTR(VL15_dropped , 11, 16, 176);
375static PORT_PMA_ATTR(port_xmit_data , 12, 32, 192);
376static PORT_PMA_ATTR(port_rcv_data , 13, 32, 224);
377static PORT_PMA_ATTR(port_xmit_packets , 14, 32, 256);
378static PORT_PMA_ATTR(port_rcv_packets , 15, 32, 288);
379
380static struct attribute *pma_attrs[] = {
381 &port_pma_attr_symbol_error.attr.attr,
382 &port_pma_attr_link_error_recovery.attr.attr,
383 &port_pma_attr_link_downed.attr.attr,
384 &port_pma_attr_port_rcv_errors.attr.attr,
385 &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
386 &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
387 &port_pma_attr_port_xmit_discards.attr.attr,
388 &port_pma_attr_port_xmit_constraint_errors.attr.attr,
389 &port_pma_attr_port_rcv_constraint_errors.attr.attr,
390 &port_pma_attr_local_link_integrity_errors.attr.attr,
391 &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
392 &port_pma_attr_VL15_dropped.attr.attr,
393 &port_pma_attr_port_xmit_data.attr.attr,
394 &port_pma_attr_port_rcv_data.attr.attr,
395 &port_pma_attr_port_xmit_packets.attr.attr,
396 &port_pma_attr_port_rcv_packets.attr.attr,
397 NULL
398};
399
400static struct attribute_group pma_group = {
401 .name = "counters",
402 .attrs = pma_attrs
403};
404
405static void ib_port_release(struct kobject *kobj)
406{
407 struct ib_port *p = container_of(kobj, struct ib_port, kobj);
408 struct attribute *a;
409 int i;
410
d48593bf 411 for (i = 0; (a = p->gid_group.attrs[i]); ++i)
1da177e4 412 kfree(a);
1da177e4 413
d48593bf
DT		 414 kfree(p->gid_group.attrs);
415
416 for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
1da177e4 417 kfree(a);
1da177e4 418
d48593bf
DT		 419 kfree(p->pkey_group.attrs);
420
1da177e4
LT		 421 kfree(p);
422}
423
424static struct kobj_type port_type = {
425 .release = ib_port_release,
426 .sysfs_ops = &port_sysfs_ops,
427 .default_attrs = port_default_attrs
428};
429
430static void ib_device_release(struct class_device *cdev)
431{
432 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
433
434 kfree(dev);
435}
436
312c004d
KS		 437static int ib_device_uevent(struct class_device *cdev, char **envp,
438 int num_envp, char *buf, int size)
1da177e4
LT		 439{
440 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
441 int i = 0, len = 0;
442
312c004d
KS		 443 if (add_uevent_var(envp, num_envp, &i, buf, size, &len,
444 "NAME=%s", dev->name))
1da177e4
LT		 445 return -ENOMEM;
446
447 /*
312c004d 448 * It might be nice to pass the node GUID with the event, but
1da177e4
LT		 449 * right now the only way to get it is to query the device
450 * provider, and this can crash during device removal because
451 * we are will be running after driver removal has started.
452 * We could add a node_guid field to struct ib_device, or we
312c004d
KS		 453 * could just let userspace read the node GUID from sysfs when
454 * devices are added.
1da177e4
LT		 455 */
456
457 envp[i] = NULL;
458 return 0;
459}
460
d48593bf
DT		 461static struct attribute **
462alloc_group_attrs(ssize_t (*show)(struct ib_port *,
463 struct port_attribute *, char *buf),
464 int len)
1da177e4 465{
d48593bf
DT		 466 struct attribute **tab_attr;
467 struct port_table_attribute *element;
1da177e4 468 int i;
1da177e4 469
d48593bf
DT		 470 tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
471 if (!tab_attr)
472 return NULL;
1da177e4 473
d48593bf 474 for (i = 0; i < len; i++) {
82ca76b6 475 element = kzalloc(sizeof(struct port_table_attribute),
d48593bf
DT		 476 GFP_KERNEL);
477 if (!element)
1da177e4 478 goto err;
1da177e4 479
d48593bf
DT		 480 if (snprintf(element->name, sizeof(element->name),
481 "%d", i) >= sizeof(element->name))
1da177e4 482 goto err;
1da177e4 483
d48593bf
DT		 484 element->attr.attr.name = element->name;
485 element->attr.attr.mode = S_IRUGO;
486 element->attr.attr.owner = THIS_MODULE;
487 element->attr.show = show;
488 element->index = i;
1da177e4 489
d48593bf 490 tab_attr[i] = &element->attr.attr;
1da177e4
LT		 491 }
492
d48593bf 493 return tab_attr;
1da177e4 494
d48593bf
DT		 495err:
496 while (--i >= 0)
497 kfree(tab_attr[i]);
498 kfree(tab_attr);
499 return NULL;
1da177e4
LT		 500}
501
502static int add_port(struct ib_device *device, int port_num)
503{
504 struct ib_port *p;
505 struct ib_port_attr attr;
506 int i;
507 int ret;
508
509 ret = ib_query_port(device, port_num, &attr);
510 if (ret)
511 return ret;
512
de6eb66b 513 p = kzalloc(sizeof *p, GFP_KERNEL);
1da177e4
LT		 514 if (!p)
515 return -ENOMEM;
1da177e4
LT		 516
517 p->ibdev = device;
518 p->port_num = port_num;
519 p->kobj.ktype = &port_type;
520
521 p->kobj.parent = kobject_get(&device->ports_parent);
522 if (!p->kobj.parent) {
523 ret = -EBUSY;
524 goto err;
525 }
526
527 ret = kobject_set_name(&p->kobj, "%d", port_num);
528 if (ret)
529 goto err_put;
530
531 ret = kobject_register(&p->kobj);
532 if (ret)
533 goto err_put;
534
535 ret = sysfs_create_group(&p->kobj, &pma_group);
536 if (ret)
537 goto err_put;
538
1da177e4 539 p->gid_group.name = "gids";
d48593bf
DT		 540 p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
541 if (!p->gid_group.attrs)
542 goto err_remove_pma;
1da177e4
LT		 543
544 ret = sysfs_create_group(&p->kobj, &p->gid_group);
545 if (ret)
546 goto err_free_gid;
547
1da177e4 548 p->pkey_group.name = "pkeys";
d48593bf
DT		 549 p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
550 attr.pkey_tbl_len);
551 if (!p->pkey_group.attrs)
552 goto err_remove_gid;
1da177e4
LT		 553
554 ret = sysfs_create_group(&p->kobj, &p->pkey_group);
555 if (ret)
556 goto err_free_pkey;
557
558 list_add_tail(&p->kobj.entry, &device->port_list);
559
560 return 0;
561
562err_free_pkey:
d48593bf
DT		 563 for (i = 0; i < attr.pkey_tbl_len; ++i)
564 kfree(p->pkey_group.attrs[i]);
1da177e4 565
d48593bf 566 kfree(p->pkey_group.attrs);
1da177e4
LT		 567
568err_remove_gid:
569 sysfs_remove_group(&p->kobj, &p->gid_group);
570
571err_free_gid:
d48593bf
DT		 572 for (i = 0; i < attr.gid_tbl_len; ++i)
573 kfree(p->gid_group.attrs[i]);
1da177e4 574
d48593bf 575 kfree(p->gid_group.attrs);
1da177e4
LT		 576
577err_remove_pma:
578 sysfs_remove_group(&p->kobj, &pma_group);
579
580err_put:
581 kobject_put(&device->ports_parent);
582
583err:
584 kfree(p);
585 return ret;
586}
587
588static ssize_t show_node_type(struct class_device *cdev, char *buf)
589{
590 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
591
ba8e9310
RD		 592 if (!ibdev_is_alive(dev))
593 return -ENODEV;
594
1da177e4
LT		 595 switch (dev->node_type) {
596 case IB_NODE_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
597 case IB_NODE_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
598 case IB_NODE_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
599 default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);
600 }
601}
602
603static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf)
604{
605 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
606 struct ib_device_attr attr;
607 ssize_t ret;
608
ba8e9310
RD		 609 if (!ibdev_is_alive(dev))
610 return -ENODEV;
611
1da177e4
LT		 612 ret = ib_query_device(dev, &attr);
613 if (ret)
614 return ret;
615
616 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
97f52eb4
SH		 617 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
618 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
619 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
620 be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
1da177e4
LT		 621}
622
623static ssize_t show_node_guid(struct class_device *cdev, char *buf)
624{
625 struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
626 struct ib_device_attr attr;
627 ssize_t ret;
628
ba8e9310
RD		 629 if (!ibdev_is_alive(dev))
630 return -ENODEV;
631
1da177e4
LT		 632 ret = ib_query_device(dev, &attr);
633 if (ret)
634 return ret;
635
636 return sprintf(buf, "%04x:%04x:%04x:%04x\n",
97f52eb4
SH		 637 be16_to_cpu(((__be16 *) &attr.node_guid)[0]),
638 be16_to_cpu(((__be16 *) &attr.node_guid)[1]),
639 be16_to_cpu(((__be16 *) &attr.node_guid)[2]),
640 be16_to_cpu(((__be16 *) &attr.node_guid)[3]));
1da177e4
LT		 641}
642
643static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
644static CLASS_DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
645static CLASS_DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
646
647static struct class_device_attribute *ib_class_attributes[] = {
648 &class_device_attr_node_type,
649 &class_device_attr_sys_image_guid,
650 &class_device_attr_node_guid
651};
652
653static struct class ib_class = {
654 .name = "infiniband",
655 .release = ib_device_release,
312c004d 656 .uevent = ib_device_uevent,
1da177e4
LT		 657};
658
659int ib_device_register_sysfs(struct ib_device *device)
660{
661 struct class_device *class_dev = &device->class_dev;
662 int ret;
663 int i;
664
665 class_dev->class = &ib_class;
666 class_dev->class_data = device;
667 strlcpy(class_dev->class_id, device->name, BUS_ID_SIZE);
668
669 INIT_LIST_HEAD(&device->port_list);
670
671 ret = class_device_register(class_dev);
672 if (ret)
673 goto err;
674
675 for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
676 ret = class_device_create_file(class_dev, ib_class_attributes[i]);
677 if (ret)
678 goto err_unregister;
679 }
680
681 device->ports_parent.parent = kobject_get(&class_dev->kobj);
682 if (!device->ports_parent.parent) {
683 ret = -EBUSY;
684 goto err_unregister;
685 }
686 ret = kobject_set_name(&device->ports_parent, "ports");
687 if (ret)
688 goto err_put;
689 ret = kobject_register(&device->ports_parent);
690 if (ret)
691 goto err_put;
692
693 if (device->node_type == IB_NODE_SWITCH) {
694 ret = add_port(device, 0);
695 if (ret)
696 goto err_put;
697 } else {
698 int i;
699
700 for (i = 1; i <= device->phys_port_cnt; ++i) {
701 ret = add_port(device, i);
702 if (ret)
703 goto err_put;
704 }
705 }
706
707 return 0;
708
709err_put:
710 {
711 struct kobject *p, *t;
712 struct ib_port *port;
713
714 list_for_each_entry_safe(p, t, &device->port_list, entry) {
715 list_del(&p->entry);
716 port = container_of(p, struct ib_port, kobj);
717 sysfs_remove_group(p, &pma_group);
718 sysfs_remove_group(p, &port->pkey_group);
719 sysfs_remove_group(p, &port->gid_group);
720 kobject_unregister(p);
721 }
722 }
723
724 kobject_put(&class_dev->kobj);
725
726err_unregister:
727 class_device_unregister(class_dev);
728
729err:
730 return ret;
731}
732
733void ib_device_unregister_sysfs(struct ib_device *device)
734{
735 struct kobject *p, *t;
736 struct ib_port *port;
737
738 list_for_each_entry_safe(p, t, &device->port_list, entry) {
739 list_del(&p->entry);
740 port = container_of(p, struct ib_port, kobj);
741 sysfs_remove_group(p, &pma_group);
742 sysfs_remove_group(p, &port->pkey_group);
743 sysfs_remove_group(p, &port->gid_group);
744 kobject_unregister(p);
745 }
746
747 kobject_unregister(&device->ports_parent);
748 class_device_unregister(&device->class_dev);
749}
750
751int ib_sysfs_setup(void)
752{
753 return class_register(&ib_class);
754}
755
756void ib_sysfs_cleanup(void)
757{
758 class_unregister(&ib_class);
759}
Linux kernel - Deliverables
This page took 0.125494 seconds and 5 git commands to generate.