1 /*
2 * Copyright (c) 2012 Intel Corporation. All rights reserved.
3 * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
4 * Copyright (c) 2006 PathScale, Inc. All rights reserved.
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 #include <linux/ctype.h>
35
36 #include "qib.h"
37 #include "qib_mad.h"
38
39 /* start of per-port functions */
40 /*
41 * Get/Set heartbeat enable. OR of 1=enabled, 2=auto
42 */
show_hrtbt_enb(struct qib_pportdata * ppd,char * buf)43 static ssize_t show_hrtbt_enb(struct qib_pportdata *ppd, char *buf)
44 {
45 struct qib_devdata *dd = ppd->dd;
46
47 return sysfs_emit(buf, "%d\n", dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT));
48 }
49
store_hrtbt_enb(struct qib_pportdata * ppd,const char * buf,size_t count)50 static ssize_t store_hrtbt_enb(struct qib_pportdata *ppd, const char *buf,
51 size_t count)
52 {
53 struct qib_devdata *dd = ppd->dd;
54 int ret;
55 u16 val;
56
57 ret = kstrtou16(buf, 0, &val);
58 if (ret) {
59 qib_dev_err(dd, "attempt to set invalid Heartbeat enable\n");
60 return ret;
61 }
62
63 /*
64 * Set the "intentional" heartbeat enable per either of
65 * "Enable" and "Auto", as these are normally set together.
66 * This bit is consulted when leaving loopback mode,
67 * because entering loopback mode overrides it and automatically
68 * disables heartbeat.
69 */
70 ret = dd->f_set_ib_cfg(ppd, QIB_IB_CFG_HRTBT, val);
71 return ret < 0 ? ret : count;
72 }
73
store_loopback(struct qib_pportdata * ppd,const char * buf,size_t count)74 static ssize_t store_loopback(struct qib_pportdata *ppd, const char *buf,
75 size_t count)
76 {
77 struct qib_devdata *dd = ppd->dd;
78 int ret = count, r;
79
80 r = dd->f_set_ib_loopback(ppd, buf);
81 if (r < 0)
82 ret = r;
83
84 return ret;
85 }
86
store_led_override(struct qib_pportdata * ppd,const char * buf,size_t count)87 static ssize_t store_led_override(struct qib_pportdata *ppd, const char *buf,
88 size_t count)
89 {
90 struct qib_devdata *dd = ppd->dd;
91 int ret;
92 u16 val;
93
94 ret = kstrtou16(buf, 0, &val);
95 if (ret) {
96 qib_dev_err(dd, "attempt to set invalid LED override\n");
97 return ret;
98 }
99
100 qib_set_led_override(ppd, val);
101 return count;
102 }
103
show_status(struct qib_pportdata * ppd,char * buf)104 static ssize_t show_status(struct qib_pportdata *ppd, char *buf)
105 {
106 if (!ppd->statusp)
107 return -EINVAL;
108
109 return sysfs_emit(buf, "0x%llx\n", (unsigned long long)*(ppd->statusp));
110 }
111
112 /*
113 * For userland compatibility, these offsets must remain fixed.
114 * They are strings for QIB_STATUS_*
115 */
116 static const char * const qib_status_str[] = {
117 "Initted",
118 "",
119 "",
120 "",
121 "",
122 "Present",
123 "IB_link_up",
124 "IB_configured",
125 "",
126 "Fatal_Hardware_Error",
127 NULL,
128 };
129
show_status_str(struct qib_pportdata * ppd,char * buf)130 static ssize_t show_status_str(struct qib_pportdata *ppd, char *buf)
131 {
132 int i, any;
133 u64 s;
134 ssize_t ret;
135
136 if (!ppd->statusp) {
137 ret = -EINVAL;
138 goto bail;
139 }
140
141 s = *(ppd->statusp);
142 *buf = '\0';
143 for (any = i = 0; s && qib_status_str[i]; i++) {
144 if (s & 1) {
145 /* if overflow */
146 if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
147 break;
148 if (strlcat(buf, qib_status_str[i], PAGE_SIZE) >=
149 PAGE_SIZE)
150 break;
151 any = 1;
152 }
153 s >>= 1;
154 }
155 if (any)
156 strlcat(buf, "\n", PAGE_SIZE);
157
158 ret = strlen(buf);
159
160 bail:
161 return ret;
162 }
163
164 /* end of per-port functions */
165
166 /*
167 * Start of per-port file structures and support code
168 * Because we are fitting into other infrastructure, we have to supply the
169 * full set of kobject/sysfs_ops structures and routines.
170 */
171 #define QIB_PORT_ATTR(name, mode, show, store) \
172 static struct qib_port_attr qib_port_attr_##name = \
173 __ATTR(name, mode, show, store)
174
175 struct qib_port_attr {
176 struct attribute attr;
177 ssize_t (*show)(struct qib_pportdata *, char *);
178 ssize_t (*store)(struct qib_pportdata *, const char *, size_t);
179 };
180
181 QIB_PORT_ATTR(loopback, S_IWUSR, NULL, store_loopback);
182 QIB_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override);
183 QIB_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
184 store_hrtbt_enb);
185 QIB_PORT_ATTR(status, S_IRUGO, show_status, NULL);
186 QIB_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL);
187
188 static struct attribute *port_default_attributes[] = {
189 &qib_port_attr_loopback.attr,
190 &qib_port_attr_led_override.attr,
191 &qib_port_attr_hrtbt_enable.attr,
192 &qib_port_attr_status.attr,
193 &qib_port_attr_status_str.attr,
194 NULL
195 };
196
197 /*
198 * Start of per-port congestion control structures and support code
199 */
200
201 /*
202 * Congestion control table size followed by table entries
203 */
read_cc_table_bin(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t count)204 static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj,
205 struct bin_attribute *bin_attr,
206 char *buf, loff_t pos, size_t count)
207 {
208 int ret;
209 struct qib_pportdata *ppd =
210 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
211
212 if (!qib_cc_table_size || !ppd->ccti_entries_shadow)
213 return -EINVAL;
214
215 ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
216 + sizeof(__be16);
217
218 if (pos > ret)
219 return -EINVAL;
220
221 if (count > ret - pos)
222 count = ret - pos;
223
224 if (!count)
225 return count;
226
227 spin_lock(&ppd->cc_shadow_lock);
228 memcpy(buf, ppd->ccti_entries_shadow, count);
229 spin_unlock(&ppd->cc_shadow_lock);
230
231 return count;
232 }
233
qib_port_release(struct kobject * kobj)234 static void qib_port_release(struct kobject *kobj)
235 {
236 /* nothing to do since memory is freed by qib_free_devdata() */
237 }
238
239 static struct kobj_type qib_port_cc_ktype = {
240 .release = qib_port_release,
241 };
242
243 static const struct bin_attribute cc_table_bin_attr = {
244 .attr = {.name = "cc_table_bin", .mode = 0444},
245 .read = read_cc_table_bin,
246 .size = PAGE_SIZE,
247 };
248
249 /*
250 * Congestion settings: port control, control map and an array of 16
251 * entries for the congestion entries - increase, timer, event log
252 * trigger threshold and the minimum injection rate delay.
253 */
read_cc_setting_bin(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t count)254 static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj,
255 struct bin_attribute *bin_attr,
256 char *buf, loff_t pos, size_t count)
257 {
258 int ret;
259 struct qib_pportdata *ppd =
260 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
261
262 if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
263 return -EINVAL;
264
265 ret = sizeof(struct ib_cc_congestion_setting_attr_shadow);
266
267 if (pos > ret)
268 return -EINVAL;
269 if (count > ret - pos)
270 count = ret - pos;
271
272 if (!count)
273 return count;
274
275 spin_lock(&ppd->cc_shadow_lock);
276 memcpy(buf, ppd->congestion_entries_shadow, count);
277 spin_unlock(&ppd->cc_shadow_lock);
278
279 return count;
280 }
281
282 static const struct bin_attribute cc_setting_bin_attr = {
283 .attr = {.name = "cc_settings_bin", .mode = 0444},
284 .read = read_cc_setting_bin,
285 .size = PAGE_SIZE,
286 };
287
288
qib_portattr_show(struct kobject * kobj,struct attribute * attr,char * buf)289 static ssize_t qib_portattr_show(struct kobject *kobj,
290 struct attribute *attr, char *buf)
291 {
292 struct qib_port_attr *pattr =
293 container_of(attr, struct qib_port_attr, attr);
294 struct qib_pportdata *ppd =
295 container_of(kobj, struct qib_pportdata, pport_kobj);
296
297 if (!pattr->show)
298 return -EIO;
299
300 return pattr->show(ppd, buf);
301 }
302
qib_portattr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t len)303 static ssize_t qib_portattr_store(struct kobject *kobj,
304 struct attribute *attr, const char *buf, size_t len)
305 {
306 struct qib_port_attr *pattr =
307 container_of(attr, struct qib_port_attr, attr);
308 struct qib_pportdata *ppd =
309 container_of(kobj, struct qib_pportdata, pport_kobj);
310
311 if (!pattr->store)
312 return -EIO;
313
314 return pattr->store(ppd, buf, len);
315 }
316
317
318 static const struct sysfs_ops qib_port_ops = {
319 .show = qib_portattr_show,
320 .store = qib_portattr_store,
321 };
322
323 static struct kobj_type qib_port_ktype = {
324 .release = qib_port_release,
325 .sysfs_ops = &qib_port_ops,
326 .default_attrs = port_default_attributes
327 };
328
329 /* Start sl2vl */
330
331 #define QIB_SL2VL_ATTR(N) \
332 static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \
333 .attr = { .name = __stringify(N), .mode = 0444 }, \
334 .sl = N \
335 }
336
337 struct qib_sl2vl_attr {
338 struct attribute attr;
339 int sl;
340 };
341
342 QIB_SL2VL_ATTR(0);
343 QIB_SL2VL_ATTR(1);
344 QIB_SL2VL_ATTR(2);
345 QIB_SL2VL_ATTR(3);
346 QIB_SL2VL_ATTR(4);
347 QIB_SL2VL_ATTR(5);
348 QIB_SL2VL_ATTR(6);
349 QIB_SL2VL_ATTR(7);
350 QIB_SL2VL_ATTR(8);
351 QIB_SL2VL_ATTR(9);
352 QIB_SL2VL_ATTR(10);
353 QIB_SL2VL_ATTR(11);
354 QIB_SL2VL_ATTR(12);
355 QIB_SL2VL_ATTR(13);
356 QIB_SL2VL_ATTR(14);
357 QIB_SL2VL_ATTR(15);
358
359 static struct attribute *sl2vl_default_attributes[] = {
360 &qib_sl2vl_attr_0.attr,
361 &qib_sl2vl_attr_1.attr,
362 &qib_sl2vl_attr_2.attr,
363 &qib_sl2vl_attr_3.attr,
364 &qib_sl2vl_attr_4.attr,
365 &qib_sl2vl_attr_5.attr,
366 &qib_sl2vl_attr_6.attr,
367 &qib_sl2vl_attr_7.attr,
368 &qib_sl2vl_attr_8.attr,
369 &qib_sl2vl_attr_9.attr,
370 &qib_sl2vl_attr_10.attr,
371 &qib_sl2vl_attr_11.attr,
372 &qib_sl2vl_attr_12.attr,
373 &qib_sl2vl_attr_13.attr,
374 &qib_sl2vl_attr_14.attr,
375 &qib_sl2vl_attr_15.attr,
376 NULL
377 };
378
sl2vl_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)379 static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr,
380 char *buf)
381 {
382 struct qib_sl2vl_attr *sattr =
383 container_of(attr, struct qib_sl2vl_attr, attr);
384 struct qib_pportdata *ppd =
385 container_of(kobj, struct qib_pportdata, sl2vl_kobj);
386 struct qib_ibport *qibp = &ppd->ibport_data;
387
388 return sysfs_emit(buf, "%u\n", qibp->sl_to_vl[sattr->sl]);
389 }
390
391 static const struct sysfs_ops qib_sl2vl_ops = {
392 .show = sl2vl_attr_show,
393 };
394
395 static struct kobj_type qib_sl2vl_ktype = {
396 .release = qib_port_release,
397 .sysfs_ops = &qib_sl2vl_ops,
398 .default_attrs = sl2vl_default_attributes
399 };
400
401 /* End sl2vl */
402
403 /* Start diag_counters */
404
405 #define QIB_DIAGC_ATTR(N) \
406 static struct qib_diagc_attr qib_diagc_attr_##N = { \
407 .attr = { .name = __stringify(N), .mode = 0664 }, \
408 .counter = offsetof(struct qib_ibport, rvp.n_##N) \
409 }
410
411 #define QIB_DIAGC_ATTR_PER_CPU(N) \
412 static struct qib_diagc_attr qib_diagc_attr_##N = { \
413 .attr = { .name = __stringify(N), .mode = 0664 }, \
414 .counter = offsetof(struct qib_ibport, rvp.z_##N) \
415 }
416
417 struct qib_diagc_attr {
418 struct attribute attr;
419 size_t counter;
420 };
421
422 QIB_DIAGC_ATTR_PER_CPU(rc_acks);
423 QIB_DIAGC_ATTR_PER_CPU(rc_qacks);
424 QIB_DIAGC_ATTR_PER_CPU(rc_delayed_comp);
425
426 QIB_DIAGC_ATTR(rc_resends);
427 QIB_DIAGC_ATTR(seq_naks);
428 QIB_DIAGC_ATTR(rdma_seq);
429 QIB_DIAGC_ATTR(rnr_naks);
430 QIB_DIAGC_ATTR(other_naks);
431 QIB_DIAGC_ATTR(rc_timeouts);
432 QIB_DIAGC_ATTR(loop_pkts);
433 QIB_DIAGC_ATTR(pkt_drops);
434 QIB_DIAGC_ATTR(dmawait);
435 QIB_DIAGC_ATTR(unaligned);
436 QIB_DIAGC_ATTR(rc_dupreq);
437 QIB_DIAGC_ATTR(rc_seqnak);
438 QIB_DIAGC_ATTR(rc_crwaits);
439
440 static struct attribute *diagc_default_attributes[] = {
441 &qib_diagc_attr_rc_resends.attr,
442 &qib_diagc_attr_rc_acks.attr,
443 &qib_diagc_attr_rc_qacks.attr,
444 &qib_diagc_attr_rc_delayed_comp.attr,
445 &qib_diagc_attr_seq_naks.attr,
446 &qib_diagc_attr_rdma_seq.attr,
447 &qib_diagc_attr_rnr_naks.attr,
448 &qib_diagc_attr_other_naks.attr,
449 &qib_diagc_attr_rc_timeouts.attr,
450 &qib_diagc_attr_loop_pkts.attr,
451 &qib_diagc_attr_pkt_drops.attr,
452 &qib_diagc_attr_dmawait.attr,
453 &qib_diagc_attr_unaligned.attr,
454 &qib_diagc_attr_rc_dupreq.attr,
455 &qib_diagc_attr_rc_seqnak.attr,
456 &qib_diagc_attr_rc_crwaits.attr,
457 NULL
458 };
459
get_all_cpu_total(u64 __percpu * cntr)460 static u64 get_all_cpu_total(u64 __percpu *cntr)
461 {
462 int cpu;
463 u64 counter = 0;
464
465 for_each_possible_cpu(cpu)
466 counter += *per_cpu_ptr(cntr, cpu);
467 return counter;
468 }
469
470 #define def_write_per_cpu(cntr) \
471 static void write_per_cpu_##cntr(struct qib_pportdata *ppd, u32 data) \
472 { \
473 struct qib_devdata *dd = ppd->dd; \
474 struct qib_ibport *qibp = &ppd->ibport_data; \
475 /* A write can only zero the counter */ \
476 if (data == 0) \
477 qibp->rvp.z_##cntr = get_all_cpu_total(qibp->rvp.cntr); \
478 else \
479 qib_dev_err(dd, "Per CPU cntrs can only be zeroed"); \
480 }
481
482 def_write_per_cpu(rc_acks)
def_write_per_cpu(rc_qacks)483 def_write_per_cpu(rc_qacks)
484 def_write_per_cpu(rc_delayed_comp)
485
486 #define READ_PER_CPU_CNTR(cntr) (get_all_cpu_total(qibp->rvp.cntr) - \
487 qibp->rvp.z_##cntr)
488
489 static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
490 char *buf)
491 {
492 struct qib_diagc_attr *dattr =
493 container_of(attr, struct qib_diagc_attr, attr);
494 struct qib_pportdata *ppd =
495 container_of(kobj, struct qib_pportdata, diagc_kobj);
496 struct qib_ibport *qibp = &ppd->ibport_data;
497 u64 val;
498
499 if (!strncmp(dattr->attr.name, "rc_acks", 7))
500 val = READ_PER_CPU_CNTR(rc_acks);
501 else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
502 val = READ_PER_CPU_CNTR(rc_qacks);
503 else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
504 val = READ_PER_CPU_CNTR(rc_delayed_comp);
505 else
506 val = *(u32 *)((char *)qibp + dattr->counter);
507
508 return sysfs_emit(buf, "%llu\n", val);
509 }
510
diagc_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t size)511 static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
512 const char *buf, size_t size)
513 {
514 struct qib_diagc_attr *dattr =
515 container_of(attr, struct qib_diagc_attr, attr);
516 struct qib_pportdata *ppd =
517 container_of(kobj, struct qib_pportdata, diagc_kobj);
518 struct qib_ibport *qibp = &ppd->ibport_data;
519 u32 val;
520 int ret;
521
522 ret = kstrtou32(buf, 0, &val);
523 if (ret)
524 return ret;
525
526 if (!strncmp(dattr->attr.name, "rc_acks", 7))
527 write_per_cpu_rc_acks(ppd, val);
528 else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
529 write_per_cpu_rc_qacks(ppd, val);
530 else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
531 write_per_cpu_rc_delayed_comp(ppd, val);
532 else
533 *(u32 *)((char *)qibp + dattr->counter) = val;
534 return size;
535 }
536
537 static const struct sysfs_ops qib_diagc_ops = {
538 .show = diagc_attr_show,
539 .store = diagc_attr_store,
540 };
541
542 static struct kobj_type qib_diagc_ktype = {
543 .release = qib_port_release,
544 .sysfs_ops = &qib_diagc_ops,
545 .default_attrs = diagc_default_attributes
546 };
547
548 /* End diag_counters */
549
550 /* end of per-port file structures and support code */
551
552 /*
553 * Start of per-unit (or driver, in some cases, but replicated
554 * per unit) functions (these get a device *)
555 */
hw_rev_show(struct device * device,struct device_attribute * attr,char * buf)556 static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
557 char *buf)
558 {
559 struct qib_ibdev *dev =
560 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
561
562 return sysfs_emit(buf, "%x\n", dd_from_dev(dev)->minrev);
563 }
564 static DEVICE_ATTR_RO(hw_rev);
565
hca_type_show(struct device * device,struct device_attribute * attr,char * buf)566 static ssize_t hca_type_show(struct device *device,
567 struct device_attribute *attr, char *buf)
568 {
569 struct qib_ibdev *dev =
570 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
571 struct qib_devdata *dd = dd_from_dev(dev);
572
573 if (!dd->boardname)
574 return -EINVAL;
575 return sysfs_emit(buf, "%s\n", dd->boardname);
576 }
577 static DEVICE_ATTR_RO(hca_type);
578 static DEVICE_ATTR(board_id, 0444, hca_type_show, NULL);
579
version_show(struct device * device,struct device_attribute * attr,char * buf)580 static ssize_t version_show(struct device *device,
581 struct device_attribute *attr, char *buf)
582 {
583 /* The string printed here is already newline-terminated. */
584 return sysfs_emit(buf, "%s", (char *)ib_qib_version);
585 }
586 static DEVICE_ATTR_RO(version);
587
boardversion_show(struct device * device,struct device_attribute * attr,char * buf)588 static ssize_t boardversion_show(struct device *device,
589 struct device_attribute *attr, char *buf)
590 {
591 struct qib_ibdev *dev =
592 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
593 struct qib_devdata *dd = dd_from_dev(dev);
594
595 /* The string printed here is already newline-terminated. */
596 return sysfs_emit(buf, "%s", dd->boardversion);
597 }
598 static DEVICE_ATTR_RO(boardversion);
599
localbus_info_show(struct device * device,struct device_attribute * attr,char * buf)600 static ssize_t localbus_info_show(struct device *device,
601 struct device_attribute *attr, char *buf)
602 {
603 struct qib_ibdev *dev =
604 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
605 struct qib_devdata *dd = dd_from_dev(dev);
606
607 /* The string printed here is already newline-terminated. */
608 return sysfs_emit(buf, "%s", dd->lbus_info);
609 }
610 static DEVICE_ATTR_RO(localbus_info);
611
nctxts_show(struct device * device,struct device_attribute * attr,char * buf)612 static ssize_t nctxts_show(struct device *device,
613 struct device_attribute *attr, char *buf)
614 {
615 struct qib_ibdev *dev =
616 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
617 struct qib_devdata *dd = dd_from_dev(dev);
618
619 /* Return the number of user ports (contexts) available. */
620 /* The calculation below deals with a special case where
621 * cfgctxts is set to 1 on a single-port board. */
622 return sysfs_emit(buf, "%u\n",
623 (dd->first_user_ctxt > dd->cfgctxts) ?
624 0 :
625 (dd->cfgctxts - dd->first_user_ctxt));
626 }
627 static DEVICE_ATTR_RO(nctxts);
628
nfreectxts_show(struct device * device,struct device_attribute * attr,char * buf)629 static ssize_t nfreectxts_show(struct device *device,
630 struct device_attribute *attr, char *buf)
631 {
632 struct qib_ibdev *dev =
633 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
634 struct qib_devdata *dd = dd_from_dev(dev);
635
636 /* Return the number of free user ports (contexts) available. */
637 return sysfs_emit(buf, "%u\n", dd->freectxts);
638 }
639 static DEVICE_ATTR_RO(nfreectxts);
640
serial_show(struct device * device,struct device_attribute * attr,char * buf)641 static ssize_t serial_show(struct device *device, struct device_attribute *attr,
642 char *buf)
643 {
644 struct qib_ibdev *dev =
645 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
646 struct qib_devdata *dd = dd_from_dev(dev);
647 const u8 *end = memchr(dd->serial, 0, ARRAY_SIZE(dd->serial));
648 int size = end ? end - dd->serial : ARRAY_SIZE(dd->serial);
649
650 return sysfs_emit(buf, ".%*s\n", size, dd->serial);
651 }
652 static DEVICE_ATTR_RO(serial);
653
chip_reset_store(struct device * device,struct device_attribute * attr,const char * buf,size_t count)654 static ssize_t chip_reset_store(struct device *device,
655 struct device_attribute *attr, const char *buf,
656 size_t count)
657 {
658 struct qib_ibdev *dev =
659 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
660 struct qib_devdata *dd = dd_from_dev(dev);
661 int ret;
662
663 if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
664 ret = -EINVAL;
665 goto bail;
666 }
667
668 ret = qib_reset_device(dd->unit);
669 bail:
670 return ret < 0 ? ret : count;
671 }
672 static DEVICE_ATTR_WO(chip_reset);
673
674 /*
675 * Dump tempsense regs. in decimal, to ease shell-scripts.
676 */
tempsense_show(struct device * device,struct device_attribute * attr,char * buf)677 static ssize_t tempsense_show(struct device *device,
678 struct device_attribute *attr, char *buf)
679 {
680 struct qib_ibdev *dev =
681 rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
682 struct qib_devdata *dd = dd_from_dev(dev);
683 int i;
684 u8 regvals[8];
685
686 for (i = 0; i < 8; i++) {
687 int ret;
688
689 if (i == 6)
690 continue;
691 ret = dd->f_tempsense_rd(dd, i);
692 if (ret < 0)
693 return ret; /* return error on bad read */
694 regvals[i] = ret;
695 }
696 return sysfs_emit(buf, "%d %d %02X %02X %d %d\n",
697 (signed char)regvals[0],
698 (signed char)regvals[1],
699 regvals[2],
700 regvals[3],
701 (signed char)regvals[5],
702 (signed char)regvals[7]);
703 }
704 static DEVICE_ATTR_RO(tempsense);
705
706 /*
707 * end of per-unit (or driver, in some cases, but replicated
708 * per unit) functions
709 */
710
711 /* start of per-unit file structures and support code */
712 static struct attribute *qib_attributes[] = {
713 &dev_attr_hw_rev.attr,
714 &dev_attr_hca_type.attr,
715 &dev_attr_board_id.attr,
716 &dev_attr_version.attr,
717 &dev_attr_nctxts.attr,
718 &dev_attr_nfreectxts.attr,
719 &dev_attr_serial.attr,
720 &dev_attr_boardversion.attr,
721 &dev_attr_tempsense.attr,
722 &dev_attr_localbus_info.attr,
723 &dev_attr_chip_reset.attr,
724 NULL,
725 };
726
727 const struct attribute_group qib_attr_group = {
728 .attrs = qib_attributes,
729 };
730
qib_create_port_files(struct ib_device * ibdev,u32 port_num,struct kobject * kobj)731 int qib_create_port_files(struct ib_device *ibdev, u32 port_num,
732 struct kobject *kobj)
733 {
734 struct qib_pportdata *ppd;
735 struct qib_devdata *dd = dd_from_ibdev(ibdev);
736 int ret;
737
738 if (!port_num || port_num > dd->num_pports) {
739 qib_dev_err(dd,
740 "Skipping infiniband class with invalid port %u\n",
741 port_num);
742 ret = -ENODEV;
743 goto bail;
744 }
745 ppd = &dd->pport[port_num - 1];
746
747 ret = kobject_init_and_add(&ppd->pport_kobj, &qib_port_ktype, kobj,
748 "linkcontrol");
749 if (ret) {
750 qib_dev_err(dd,
751 "Skipping linkcontrol sysfs info, (err %d) port %u\n",
752 ret, port_num);
753 goto bail_link;
754 }
755 kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
756
757 ret = kobject_init_and_add(&ppd->sl2vl_kobj, &qib_sl2vl_ktype, kobj,
758 "sl2vl");
759 if (ret) {
760 qib_dev_err(dd,
761 "Skipping sl2vl sysfs info, (err %d) port %u\n",
762 ret, port_num);
763 goto bail_sl;
764 }
765 kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);
766
767 ret = kobject_init_and_add(&ppd->diagc_kobj, &qib_diagc_ktype, kobj,
768 "diag_counters");
769 if (ret) {
770 qib_dev_err(dd,
771 "Skipping diag_counters sysfs info, (err %d) port %u\n",
772 ret, port_num);
773 goto bail_diagc;
774 }
775 kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
776
777 if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
778 return 0;
779
780 ret = kobject_init_and_add(&ppd->pport_cc_kobj, &qib_port_cc_ktype,
781 kobj, "CCMgtA");
782 if (ret) {
783 qib_dev_err(dd,
784 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
785 ret, port_num);
786 goto bail_cc;
787 }
788
789 kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
790
791 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
792 &cc_setting_bin_attr);
793 if (ret) {
794 qib_dev_err(dd,
795 "Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
796 ret, port_num);
797 goto bail_cc;
798 }
799
800 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
801 &cc_table_bin_attr);
802 if (ret) {
803 qib_dev_err(dd,
804 "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
805 ret, port_num);
806 goto bail_cc_entry_bin;
807 }
808
809 qib_devinfo(dd->pcidev,
810 "IB%u: Congestion Control Agent enabled for port %d\n",
811 dd->unit, port_num);
812
813 return 0;
814
815 bail_cc_entry_bin:
816 sysfs_remove_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
817 bail_cc:
818 kobject_put(&ppd->pport_cc_kobj);
819 bail_diagc:
820 kobject_put(&ppd->diagc_kobj);
821 bail_sl:
822 kobject_put(&ppd->sl2vl_kobj);
823 bail_link:
824 kobject_put(&ppd->pport_kobj);
825 bail:
826 return ret;
827 }
828
829 /*
830 * Unregister and remove our files in /sys/class/infiniband.
831 */
qib_verbs_unregister_sysfs(struct qib_devdata * dd)832 void qib_verbs_unregister_sysfs(struct qib_devdata *dd)
833 {
834 struct qib_pportdata *ppd;
835 int i;
836
837 for (i = 0; i < dd->num_pports; i++) {
838 ppd = &dd->pport[i];
839 if (qib_cc_table_size &&
840 ppd->congestion_entries_shadow) {
841 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
842 &cc_setting_bin_attr);
843 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
844 &cc_table_bin_attr);
845 kobject_put(&ppd->pport_cc_kobj);
846 }
847 kobject_put(&ppd->diagc_kobj);
848 kobject_put(&ppd->sl2vl_kobj);
849 kobject_put(&ppd->pport_kobj);
850 }
851 }
852