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 int ret;
47
48 ret = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT);
49 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
50 return ret;
51 }
52
store_hrtbt_enb(struct qib_pportdata * ppd,const char * buf,size_t count)53 static ssize_t store_hrtbt_enb(struct qib_pportdata *ppd, const char *buf,
54 size_t count)
55 {
56 struct qib_devdata *dd = ppd->dd;
57 int ret;
58 u16 val;
59
60 ret = kstrtou16(buf, 0, &val);
61 if (ret) {
62 qib_dev_err(dd, "attempt to set invalid Heartbeat enable\n");
63 return ret;
64 }
65
66 /*
67 * Set the "intentional" heartbeat enable per either of
68 * "Enable" and "Auto", as these are normally set together.
69 * This bit is consulted when leaving loopback mode,
70 * because entering loopback mode overrides it and automatically
71 * disables heartbeat.
72 */
73 ret = dd->f_set_ib_cfg(ppd, QIB_IB_CFG_HRTBT, val);
74 return ret < 0 ? ret : count;
75 }
76
store_loopback(struct qib_pportdata * ppd,const char * buf,size_t count)77 static ssize_t store_loopback(struct qib_pportdata *ppd, const char *buf,
78 size_t count)
79 {
80 struct qib_devdata *dd = ppd->dd;
81 int ret = count, r;
82
83 r = dd->f_set_ib_loopback(ppd, buf);
84 if (r < 0)
85 ret = r;
86
87 return ret;
88 }
89
store_led_override(struct qib_pportdata * ppd,const char * buf,size_t count)90 static ssize_t store_led_override(struct qib_pportdata *ppd, const char *buf,
91 size_t count)
92 {
93 struct qib_devdata *dd = ppd->dd;
94 int ret;
95 u16 val;
96
97 ret = kstrtou16(buf, 0, &val);
98 if (ret) {
99 qib_dev_err(dd, "attempt to set invalid LED override\n");
100 return ret;
101 }
102
103 qib_set_led_override(ppd, val);
104 return count;
105 }
106
show_status(struct qib_pportdata * ppd,char * buf)107 static ssize_t show_status(struct qib_pportdata *ppd, char *buf)
108 {
109 ssize_t ret;
110
111 if (!ppd->statusp)
112 ret = -EINVAL;
113 else
114 ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
115 (unsigned long long) *(ppd->statusp));
116 return ret;
117 }
118
119 /*
120 * For userland compatibility, these offsets must remain fixed.
121 * They are strings for QIB_STATUS_*
122 */
123 static const char * const qib_status_str[] = {
124 "Initted",
125 "",
126 "",
127 "",
128 "",
129 "Present",
130 "IB_link_up",
131 "IB_configured",
132 "",
133 "Fatal_Hardware_Error",
134 NULL,
135 };
136
show_status_str(struct qib_pportdata * ppd,char * buf)137 static ssize_t show_status_str(struct qib_pportdata *ppd, char *buf)
138 {
139 int i, any;
140 u64 s;
141 ssize_t ret;
142
143 if (!ppd->statusp) {
144 ret = -EINVAL;
145 goto bail;
146 }
147
148 s = *(ppd->statusp);
149 *buf = '\0';
150 for (any = i = 0; s && qib_status_str[i]; i++) {
151 if (s & 1) {
152 /* if overflow */
153 if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
154 break;
155 if (strlcat(buf, qib_status_str[i], PAGE_SIZE) >=
156 PAGE_SIZE)
157 break;
158 any = 1;
159 }
160 s >>= 1;
161 }
162 if (any)
163 strlcat(buf, "\n", PAGE_SIZE);
164
165 ret = strlen(buf);
166
167 bail:
168 return ret;
169 }
170
171 /* end of per-port functions */
172
173 /*
174 * Start of per-port file structures and support code
175 * Because we are fitting into other infrastructure, we have to supply the
176 * full set of kobject/sysfs_ops structures and routines.
177 */
178 #define QIB_PORT_ATTR(name, mode, show, store) \
179 static struct qib_port_attr qib_port_attr_##name = \
180 __ATTR(name, mode, show, store)
181
182 struct qib_port_attr {
183 struct attribute attr;
184 ssize_t (*show)(struct qib_pportdata *, char *);
185 ssize_t (*store)(struct qib_pportdata *, const char *, size_t);
186 };
187
188 QIB_PORT_ATTR(loopback, S_IWUSR, NULL, store_loopback);
189 QIB_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override);
190 QIB_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
191 store_hrtbt_enb);
192 QIB_PORT_ATTR(status, S_IRUGO, show_status, NULL);
193 QIB_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL);
194
195 static struct attribute *port_default_attributes[] = {
196 &qib_port_attr_loopback.attr,
197 &qib_port_attr_led_override.attr,
198 &qib_port_attr_hrtbt_enable.attr,
199 &qib_port_attr_status.attr,
200 &qib_port_attr_status_str.attr,
201 NULL
202 };
203
204 /*
205 * Start of per-port congestion control structures and support code
206 */
207
208 /*
209 * Congestion control table size followed by table entries
210 */
read_cc_table_bin(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t count)211 static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj,
212 struct bin_attribute *bin_attr,
213 char *buf, loff_t pos, size_t count)
214 {
215 int ret;
216 struct qib_pportdata *ppd =
217 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
218
219 if (!qib_cc_table_size || !ppd->ccti_entries_shadow)
220 return -EINVAL;
221
222 ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
223 + sizeof(__be16);
224
225 if (pos > ret)
226 return -EINVAL;
227
228 if (count > ret - pos)
229 count = ret - pos;
230
231 if (!count)
232 return count;
233
234 spin_lock(&ppd->cc_shadow_lock);
235 memcpy(buf, ppd->ccti_entries_shadow, count);
236 spin_unlock(&ppd->cc_shadow_lock);
237
238 return count;
239 }
240
qib_port_release(struct kobject * kobj)241 static void qib_port_release(struct kobject *kobj)
242 {
243 /* nothing to do since memory is freed by qib_free_devdata() */
244 }
245
246 static struct kobj_type qib_port_cc_ktype = {
247 .release = qib_port_release,
248 };
249
250 static const struct bin_attribute cc_table_bin_attr = {
251 .attr = {.name = "cc_table_bin", .mode = 0444},
252 .read = read_cc_table_bin,
253 .size = PAGE_SIZE,
254 };
255
256 /*
257 * Congestion settings: port control, control map and an array of 16
258 * entries for the congestion entries - increase, timer, event log
259 * trigger threshold and the minimum injection rate delay.
260 */
read_cc_setting_bin(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t count)261 static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj,
262 struct bin_attribute *bin_attr,
263 char *buf, loff_t pos, size_t count)
264 {
265 int ret;
266 struct qib_pportdata *ppd =
267 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
268
269 if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
270 return -EINVAL;
271
272 ret = sizeof(struct ib_cc_congestion_setting_attr_shadow);
273
274 if (pos > ret)
275 return -EINVAL;
276 if (count > ret - pos)
277 count = ret - pos;
278
279 if (!count)
280 return count;
281
282 spin_lock(&ppd->cc_shadow_lock);
283 memcpy(buf, ppd->congestion_entries_shadow, count);
284 spin_unlock(&ppd->cc_shadow_lock);
285
286 return count;
287 }
288
289 static const struct bin_attribute cc_setting_bin_attr = {
290 .attr = {.name = "cc_settings_bin", .mode = 0444},
291 .read = read_cc_setting_bin,
292 .size = PAGE_SIZE,
293 };
294
295
qib_portattr_show(struct kobject * kobj,struct attribute * attr,char * buf)296 static ssize_t qib_portattr_show(struct kobject *kobj,
297 struct attribute *attr, char *buf)
298 {
299 struct qib_port_attr *pattr =
300 container_of(attr, struct qib_port_attr, attr);
301 struct qib_pportdata *ppd =
302 container_of(kobj, struct qib_pportdata, pport_kobj);
303
304 if (!pattr->show)
305 return -EIO;
306
307 return pattr->show(ppd, buf);
308 }
309
qib_portattr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t len)310 static ssize_t qib_portattr_store(struct kobject *kobj,
311 struct attribute *attr, const char *buf, size_t len)
312 {
313 struct qib_port_attr *pattr =
314 container_of(attr, struct qib_port_attr, attr);
315 struct qib_pportdata *ppd =
316 container_of(kobj, struct qib_pportdata, pport_kobj);
317
318 if (!pattr->store)
319 return -EIO;
320
321 return pattr->store(ppd, buf, len);
322 }
323
324
325 static const struct sysfs_ops qib_port_ops = {
326 .show = qib_portattr_show,
327 .store = qib_portattr_store,
328 };
329
330 static struct kobj_type qib_port_ktype = {
331 .release = qib_port_release,
332 .sysfs_ops = &qib_port_ops,
333 .default_attrs = port_default_attributes
334 };
335
336 /* Start sl2vl */
337
338 #define QIB_SL2VL_ATTR(N) \
339 static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \
340 .attr = { .name = __stringify(N), .mode = 0444 }, \
341 .sl = N \
342 }
343
344 struct qib_sl2vl_attr {
345 struct attribute attr;
346 int sl;
347 };
348
349 QIB_SL2VL_ATTR(0);
350 QIB_SL2VL_ATTR(1);
351 QIB_SL2VL_ATTR(2);
352 QIB_SL2VL_ATTR(3);
353 QIB_SL2VL_ATTR(4);
354 QIB_SL2VL_ATTR(5);
355 QIB_SL2VL_ATTR(6);
356 QIB_SL2VL_ATTR(7);
357 QIB_SL2VL_ATTR(8);
358 QIB_SL2VL_ATTR(9);
359 QIB_SL2VL_ATTR(10);
360 QIB_SL2VL_ATTR(11);
361 QIB_SL2VL_ATTR(12);
362 QIB_SL2VL_ATTR(13);
363 QIB_SL2VL_ATTR(14);
364 QIB_SL2VL_ATTR(15);
365
366 static struct attribute *sl2vl_default_attributes[] = {
367 &qib_sl2vl_attr_0.attr,
368 &qib_sl2vl_attr_1.attr,
369 &qib_sl2vl_attr_2.attr,
370 &qib_sl2vl_attr_3.attr,
371 &qib_sl2vl_attr_4.attr,
372 &qib_sl2vl_attr_5.attr,
373 &qib_sl2vl_attr_6.attr,
374 &qib_sl2vl_attr_7.attr,
375 &qib_sl2vl_attr_8.attr,
376 &qib_sl2vl_attr_9.attr,
377 &qib_sl2vl_attr_10.attr,
378 &qib_sl2vl_attr_11.attr,
379 &qib_sl2vl_attr_12.attr,
380 &qib_sl2vl_attr_13.attr,
381 &qib_sl2vl_attr_14.attr,
382 &qib_sl2vl_attr_15.attr,
383 NULL
384 };
385
sl2vl_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)386 static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr,
387 char *buf)
388 {
389 struct qib_sl2vl_attr *sattr =
390 container_of(attr, struct qib_sl2vl_attr, attr);
391 struct qib_pportdata *ppd =
392 container_of(kobj, struct qib_pportdata, sl2vl_kobj);
393 struct qib_ibport *qibp = &ppd->ibport_data;
394
395 return sprintf(buf, "%u\n", qibp->sl_to_vl[sattr->sl]);
396 }
397
398 static const struct sysfs_ops qib_sl2vl_ops = {
399 .show = sl2vl_attr_show,
400 };
401
402 static struct kobj_type qib_sl2vl_ktype = {
403 .release = qib_port_release,
404 .sysfs_ops = &qib_sl2vl_ops,
405 .default_attrs = sl2vl_default_attributes
406 };
407
408 /* End sl2vl */
409
410 /* Start diag_counters */
411
412 #define QIB_DIAGC_ATTR(N) \
413 static struct qib_diagc_attr qib_diagc_attr_##N = { \
414 .attr = { .name = __stringify(N), .mode = 0664 }, \
415 .counter = offsetof(struct qib_ibport, rvp.n_##N) \
416 }
417
418 #define QIB_DIAGC_ATTR_PER_CPU(N) \
419 static struct qib_diagc_attr qib_diagc_attr_##N = { \
420 .attr = { .name = __stringify(N), .mode = 0664 }, \
421 .counter = offsetof(struct qib_ibport, rvp.z_##N) \
422 }
423
424 struct qib_diagc_attr {
425 struct attribute attr;
426 size_t counter;
427 };
428
429 QIB_DIAGC_ATTR_PER_CPU(rc_acks);
430 QIB_DIAGC_ATTR_PER_CPU(rc_qacks);
431 QIB_DIAGC_ATTR_PER_CPU(rc_delayed_comp);
432
433 QIB_DIAGC_ATTR(rc_resends);
434 QIB_DIAGC_ATTR(seq_naks);
435 QIB_DIAGC_ATTR(rdma_seq);
436 QIB_DIAGC_ATTR(rnr_naks);
437 QIB_DIAGC_ATTR(other_naks);
438 QIB_DIAGC_ATTR(rc_timeouts);
439 QIB_DIAGC_ATTR(loop_pkts);
440 QIB_DIAGC_ATTR(pkt_drops);
441 QIB_DIAGC_ATTR(dmawait);
442 QIB_DIAGC_ATTR(unaligned);
443 QIB_DIAGC_ATTR(rc_dupreq);
444 QIB_DIAGC_ATTR(rc_seqnak);
445
446 static struct attribute *diagc_default_attributes[] = {
447 &qib_diagc_attr_rc_resends.attr,
448 &qib_diagc_attr_rc_acks.attr,
449 &qib_diagc_attr_rc_qacks.attr,
450 &qib_diagc_attr_rc_delayed_comp.attr,
451 &qib_diagc_attr_seq_naks.attr,
452 &qib_diagc_attr_rdma_seq.attr,
453 &qib_diagc_attr_rnr_naks.attr,
454 &qib_diagc_attr_other_naks.attr,
455 &qib_diagc_attr_rc_timeouts.attr,
456 &qib_diagc_attr_loop_pkts.attr,
457 &qib_diagc_attr_pkt_drops.attr,
458 &qib_diagc_attr_dmawait.attr,
459 &qib_diagc_attr_unaligned.attr,
460 &qib_diagc_attr_rc_dupreq.attr,
461 &qib_diagc_attr_rc_seqnak.attr,
462 NULL
463 };
464
get_all_cpu_total(u64 __percpu * cntr)465 static u64 get_all_cpu_total(u64 __percpu *cntr)
466 {
467 int cpu;
468 u64 counter = 0;
469
470 for_each_possible_cpu(cpu)
471 counter += *per_cpu_ptr(cntr, cpu);
472 return counter;
473 }
474
475 #define def_write_per_cpu(cntr) \
476 static void write_per_cpu_##cntr(struct qib_pportdata *ppd, u32 data) \
477 { \
478 struct qib_devdata *dd = ppd->dd; \
479 struct qib_ibport *qibp = &ppd->ibport_data; \
480 /* A write can only zero the counter */ \
481 if (data == 0) \
482 qibp->rvp.z_##cntr = get_all_cpu_total(qibp->rvp.cntr); \
483 else \
484 qib_dev_err(dd, "Per CPU cntrs can only be zeroed"); \
485 }
486
487 def_write_per_cpu(rc_acks)
def_write_per_cpu(rc_qacks)488 def_write_per_cpu(rc_qacks)
489 def_write_per_cpu(rc_delayed_comp)
490
491 #define READ_PER_CPU_CNTR(cntr) (get_all_cpu_total(qibp->rvp.cntr) - \
492 qibp->rvp.z_##cntr)
493
494 static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
495 char *buf)
496 {
497 struct qib_diagc_attr *dattr =
498 container_of(attr, struct qib_diagc_attr, attr);
499 struct qib_pportdata *ppd =
500 container_of(kobj, struct qib_pportdata, diagc_kobj);
501 struct qib_ibport *qibp = &ppd->ibport_data;
502
503 if (!strncmp(dattr->attr.name, "rc_acks", 7))
504 return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_acks));
505 else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
506 return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_qacks));
507 else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
508 return sprintf(buf, "%llu\n",
509 READ_PER_CPU_CNTR(rc_delayed_comp));
510 else
511 return sprintf(buf, "%u\n",
512 *(u32 *)((char *)qibp + dattr->counter));
513 }
514
diagc_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t size)515 static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
516 const char *buf, size_t size)
517 {
518 struct qib_diagc_attr *dattr =
519 container_of(attr, struct qib_diagc_attr, attr);
520 struct qib_pportdata *ppd =
521 container_of(kobj, struct qib_pportdata, diagc_kobj);
522 struct qib_ibport *qibp = &ppd->ibport_data;
523 u32 val;
524 int ret;
525
526 ret = kstrtou32(buf, 0, &val);
527 if (ret)
528 return ret;
529
530 if (!strncmp(dattr->attr.name, "rc_acks", 7))
531 write_per_cpu_rc_acks(ppd, val);
532 else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
533 write_per_cpu_rc_qacks(ppd, val);
534 else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
535 write_per_cpu_rc_delayed_comp(ppd, val);
536 else
537 *(u32 *)((char *)qibp + dattr->counter) = val;
538 return size;
539 }
540
541 static const struct sysfs_ops qib_diagc_ops = {
542 .show = diagc_attr_show,
543 .store = diagc_attr_store,
544 };
545
546 static struct kobj_type qib_diagc_ktype = {
547 .release = qib_port_release,
548 .sysfs_ops = &qib_diagc_ops,
549 .default_attrs = diagc_default_attributes
550 };
551
552 /* End diag_counters */
553
554 /* end of per-port file structures and support code */
555
556 /*
557 * Start of per-unit (or driver, in some cases, but replicated
558 * per unit) functions (these get a device *)
559 */
show_rev(struct device * device,struct device_attribute * attr,char * buf)560 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
561 char *buf)
562 {
563 struct qib_ibdev *dev =
564 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
565
566 return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev);
567 }
568
show_hca(struct device * device,struct device_attribute * attr,char * buf)569 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
570 char *buf)
571 {
572 struct qib_ibdev *dev =
573 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
574 struct qib_devdata *dd = dd_from_dev(dev);
575 int ret;
576
577 if (!dd->boardname)
578 ret = -EINVAL;
579 else
580 ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname);
581 return ret;
582 }
583
show_version(struct device * device,struct device_attribute * attr,char * buf)584 static ssize_t show_version(struct device *device,
585 struct device_attribute *attr, char *buf)
586 {
587 /* The string printed here is already newline-terminated. */
588 return scnprintf(buf, PAGE_SIZE, "%s", (char *)ib_qib_version);
589 }
590
show_boardversion(struct device * device,struct device_attribute * attr,char * buf)591 static ssize_t show_boardversion(struct device *device,
592 struct device_attribute *attr, char *buf)
593 {
594 struct qib_ibdev *dev =
595 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
596 struct qib_devdata *dd = dd_from_dev(dev);
597
598 /* The string printed here is already newline-terminated. */
599 return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion);
600 }
601
602
show_localbus_info(struct device * device,struct device_attribute * attr,char * buf)603 static ssize_t show_localbus_info(struct device *device,
604 struct device_attribute *attr, char *buf)
605 {
606 struct qib_ibdev *dev =
607 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
608 struct qib_devdata *dd = dd_from_dev(dev);
609
610 /* The string printed here is already newline-terminated. */
611 return scnprintf(buf, PAGE_SIZE, "%s", dd->lbus_info);
612 }
613
614
show_nctxts(struct device * device,struct device_attribute * attr,char * buf)615 static ssize_t show_nctxts(struct device *device,
616 struct device_attribute *attr, char *buf)
617 {
618 struct qib_ibdev *dev =
619 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
620 struct qib_devdata *dd = dd_from_dev(dev);
621
622 /* Return the number of user ports (contexts) available. */
623 /* The calculation below deals with a special case where
624 * cfgctxts is set to 1 on a single-port board. */
625 return scnprintf(buf, PAGE_SIZE, "%u\n",
626 (dd->first_user_ctxt > dd->cfgctxts) ? 0 :
627 (dd->cfgctxts - dd->first_user_ctxt));
628 }
629
show_nfreectxts(struct device * device,struct device_attribute * attr,char * buf)630 static ssize_t show_nfreectxts(struct device *device,
631 struct device_attribute *attr, char *buf)
632 {
633 struct qib_ibdev *dev =
634 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
635 struct qib_devdata *dd = dd_from_dev(dev);
636
637 /* Return the number of free user ports (contexts) available. */
638 return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts);
639 }
640
show_serial(struct device * device,struct device_attribute * attr,char * buf)641 static ssize_t show_serial(struct device *device,
642 struct device_attribute *attr, char *buf)
643 {
644 struct qib_ibdev *dev =
645 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
646 struct qib_devdata *dd = dd_from_dev(dev);
647
648 buf[sizeof(dd->serial)] = '\0';
649 memcpy(buf, dd->serial, sizeof(dd->serial));
650 strcat(buf, "\n");
651 return strlen(buf);
652 }
653
store_chip_reset(struct device * device,struct device_attribute * attr,const char * buf,size_t count)654 static ssize_t store_chip_reset(struct device *device,
655 struct device_attribute *attr, const char *buf,
656 size_t count)
657 {
658 struct qib_ibdev *dev =
659 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
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
673 /*
674 * Dump tempsense regs. in decimal, to ease shell-scripts.
675 */
show_tempsense(struct device * device,struct device_attribute * attr,char * buf)676 static ssize_t show_tempsense(struct device *device,
677 struct device_attribute *attr, char *buf)
678 {
679 struct qib_ibdev *dev =
680 container_of(device, struct qib_ibdev, rdi.ibdev.dev);
681 struct qib_devdata *dd = dd_from_dev(dev);
682 int ret;
683 int idx;
684 u8 regvals[8];
685
686 ret = -ENXIO;
687 for (idx = 0; idx < 8; ++idx) {
688 if (idx == 6)
689 continue;
690 ret = dd->f_tempsense_rd(dd, idx);
691 if (ret < 0)
692 break;
693 regvals[idx] = ret;
694 }
695 if (idx == 8)
696 ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n",
697 *(signed char *)(regvals),
698 *(signed char *)(regvals + 1),
699 regvals[2], regvals[3],
700 *(signed char *)(regvals + 5),
701 *(signed char *)(regvals + 7));
702 return ret;
703 }
704
705 /*
706 * end of per-unit (or driver, in some cases, but replicated
707 * per unit) functions
708 */
709
710 /* start of per-unit file structures and support code */
711 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
712 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
713 static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL);
714 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
715 static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);
716 static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL);
717 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
718 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
719 static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
720 static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL);
721 static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
722
723 static struct device_attribute *qib_attributes[] = {
724 &dev_attr_hw_rev,
725 &dev_attr_hca_type,
726 &dev_attr_board_id,
727 &dev_attr_version,
728 &dev_attr_nctxts,
729 &dev_attr_nfreectxts,
730 &dev_attr_serial,
731 &dev_attr_boardversion,
732 &dev_attr_tempsense,
733 &dev_attr_localbus_info,
734 &dev_attr_chip_reset,
735 };
736
qib_create_port_files(struct ib_device * ibdev,u8 port_num,struct kobject * kobj)737 int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
738 struct kobject *kobj)
739 {
740 struct qib_pportdata *ppd;
741 struct qib_devdata *dd = dd_from_ibdev(ibdev);
742 int ret;
743
744 if (!port_num || port_num > dd->num_pports) {
745 qib_dev_err(dd,
746 "Skipping infiniband class with invalid port %u\n",
747 port_num);
748 ret = -ENODEV;
749 goto bail;
750 }
751 ppd = &dd->pport[port_num - 1];
752
753 ret = kobject_init_and_add(&ppd->pport_kobj, &qib_port_ktype, kobj,
754 "linkcontrol");
755 if (ret) {
756 qib_dev_err(dd,
757 "Skipping linkcontrol sysfs info, (err %d) port %u\n",
758 ret, port_num);
759 goto bail;
760 }
761 kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
762
763 ret = kobject_init_and_add(&ppd->sl2vl_kobj, &qib_sl2vl_ktype, kobj,
764 "sl2vl");
765 if (ret) {
766 qib_dev_err(dd,
767 "Skipping sl2vl sysfs info, (err %d) port %u\n",
768 ret, port_num);
769 goto bail_link;
770 }
771 kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);
772
773 ret = kobject_init_and_add(&ppd->diagc_kobj, &qib_diagc_ktype, kobj,
774 "diag_counters");
775 if (ret) {
776 qib_dev_err(dd,
777 "Skipping diag_counters sysfs info, (err %d) port %u\n",
778 ret, port_num);
779 goto bail_sl;
780 }
781 kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
782
783 if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
784 return 0;
785
786 ret = kobject_init_and_add(&ppd->pport_cc_kobj, &qib_port_cc_ktype,
787 kobj, "CCMgtA");
788 if (ret) {
789 qib_dev_err(dd,
790 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
791 ret, port_num);
792 goto bail_diagc;
793 }
794
795 kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
796
797 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
798 &cc_setting_bin_attr);
799 if (ret) {
800 qib_dev_err(dd,
801 "Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
802 ret, port_num);
803 goto bail_cc;
804 }
805
806 ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
807 &cc_table_bin_attr);
808 if (ret) {
809 qib_dev_err(dd,
810 "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
811 ret, port_num);
812 goto bail_cc_entry_bin;
813 }
814
815 qib_devinfo(dd->pcidev,
816 "IB%u: Congestion Control Agent enabled for port %d\n",
817 dd->unit, port_num);
818
819 return 0;
820
821 bail_cc_entry_bin:
822 sysfs_remove_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
823 bail_cc:
824 kobject_put(&ppd->pport_cc_kobj);
825 bail_diagc:
826 kobject_put(&ppd->diagc_kobj);
827 bail_sl:
828 kobject_put(&ppd->sl2vl_kobj);
829 bail_link:
830 kobject_put(&ppd->pport_kobj);
831 bail:
832 return ret;
833 }
834
835 /*
836 * Register and create our files in /sys/class/infiniband.
837 */
qib_verbs_register_sysfs(struct qib_devdata * dd)838 int qib_verbs_register_sysfs(struct qib_devdata *dd)
839 {
840 struct ib_device *dev = &dd->verbs_dev.rdi.ibdev;
841 int i, ret;
842
843 for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i) {
844 ret = device_create_file(&dev->dev, qib_attributes[i]);
845 if (ret)
846 goto bail;
847 }
848
849 return 0;
850 bail:
851 for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i)
852 device_remove_file(&dev->dev, qib_attributes[i]);
853 return ret;
854 }
855
856 /*
857 * Unregister and remove our files in /sys/class/infiniband.
858 */
qib_verbs_unregister_sysfs(struct qib_devdata * dd)859 void qib_verbs_unregister_sysfs(struct qib_devdata *dd)
860 {
861 struct qib_pportdata *ppd;
862 int i;
863
864 for (i = 0; i < dd->num_pports; i++) {
865 ppd = &dd->pport[i];
866 if (qib_cc_table_size &&
867 ppd->congestion_entries_shadow) {
868 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
869 &cc_setting_bin_attr);
870 sysfs_remove_bin_file(&ppd->pport_cc_kobj,
871 &cc_table_bin_attr);
872 kobject_put(&ppd->pport_cc_kobj);
873 }
874 kobject_put(&ppd->sl2vl_kobj);
875 kobject_put(&ppd->pport_kobj);
876 }
877 }
878