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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 | */ | |
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 | ||
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 | ||
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 | ||
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 | ||
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 | ||
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 | */ | |
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 | ||
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 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 | */ | |
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 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 | ||
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 | return pattr->show(ppd, buf); | |
305 | } | |
306 | ||
307 | static ssize_t qib_portattr_store(struct kobject *kobj, | |
308 | struct attribute *attr, const char *buf, size_t len) | |
309 | { | |
310 | struct qib_port_attr *pattr = | |
311 | container_of(attr, struct qib_port_attr, attr); | |
312 | struct qib_pportdata *ppd = | |
313 | container_of(kobj, struct qib_pportdata, pport_kobj); | |
314 | ||
315 | return pattr->store(ppd, buf, len); | |
316 | } | |
317 | ||
318 | ||
319 | static const struct sysfs_ops qib_port_ops = { | |
320 | .show = qib_portattr_show, | |
321 | .store = qib_portattr_store, | |
322 | }; | |
323 | ||
324 | static struct kobj_type qib_port_ktype = { | |
325 | .release = qib_port_release, | |
326 | .sysfs_ops = &qib_port_ops, | |
327 | .default_attrs = port_default_attributes | |
328 | }; | |
329 | ||
330 | /* Start sl2vl */ | |
331 | ||
332 | #define QIB_SL2VL_ATTR(N) \ | |
333 | static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \ | |
334 | .attr = { .name = __stringify(N), .mode = 0444 }, \ | |
335 | .sl = N \ | |
336 | } | |
337 | ||
338 | struct qib_sl2vl_attr { | |
339 | struct attribute attr; | |
340 | int sl; | |
341 | }; | |
342 | ||
343 | QIB_SL2VL_ATTR(0); | |
344 | QIB_SL2VL_ATTR(1); | |
345 | QIB_SL2VL_ATTR(2); | |
346 | QIB_SL2VL_ATTR(3); | |
347 | QIB_SL2VL_ATTR(4); | |
348 | QIB_SL2VL_ATTR(5); | |
349 | QIB_SL2VL_ATTR(6); | |
350 | QIB_SL2VL_ATTR(7); | |
351 | QIB_SL2VL_ATTR(8); | |
352 | QIB_SL2VL_ATTR(9); | |
353 | QIB_SL2VL_ATTR(10); | |
354 | QIB_SL2VL_ATTR(11); | |
355 | QIB_SL2VL_ATTR(12); | |
356 | QIB_SL2VL_ATTR(13); | |
357 | QIB_SL2VL_ATTR(14); | |
358 | QIB_SL2VL_ATTR(15); | |
359 | ||
360 | static struct attribute *sl2vl_default_attributes[] = { | |
361 | &qib_sl2vl_attr_0.attr, | |
362 | &qib_sl2vl_attr_1.attr, | |
363 | &qib_sl2vl_attr_2.attr, | |
364 | &qib_sl2vl_attr_3.attr, | |
365 | &qib_sl2vl_attr_4.attr, | |
366 | &qib_sl2vl_attr_5.attr, | |
367 | &qib_sl2vl_attr_6.attr, | |
368 | &qib_sl2vl_attr_7.attr, | |
369 | &qib_sl2vl_attr_8.attr, | |
370 | &qib_sl2vl_attr_9.attr, | |
371 | &qib_sl2vl_attr_10.attr, | |
372 | &qib_sl2vl_attr_11.attr, | |
373 | &qib_sl2vl_attr_12.attr, | |
374 | &qib_sl2vl_attr_13.attr, | |
375 | &qib_sl2vl_attr_14.attr, | |
376 | &qib_sl2vl_attr_15.attr, | |
377 | NULL | |
378 | }; | |
379 | ||
380 | static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr, | |
381 | char *buf) | |
382 | { | |
383 | struct qib_sl2vl_attr *sattr = | |
384 | container_of(attr, struct qib_sl2vl_attr, attr); | |
385 | struct qib_pportdata *ppd = | |
386 | container_of(kobj, struct qib_pportdata, sl2vl_kobj); | |
387 | struct qib_ibport *qibp = &ppd->ibport_data; | |
388 | ||
389 | return sprintf(buf, "%u\n", qibp->sl_to_vl[sattr->sl]); | |
390 | } | |
391 | ||
392 | static const struct sysfs_ops qib_sl2vl_ops = { | |
393 | .show = sl2vl_attr_show, | |
394 | }; | |
395 | ||
396 | static struct kobj_type qib_sl2vl_ktype = { | |
397 | .release = qib_port_release, | |
398 | .sysfs_ops = &qib_sl2vl_ops, | |
399 | .default_attrs = sl2vl_default_attributes | |
400 | }; | |
401 | ||
402 | /* End sl2vl */ | |
403 | ||
404 | /* Start diag_counters */ | |
405 | ||
406 | #define QIB_DIAGC_ATTR(N) \ | |
407 | static struct qib_diagc_attr qib_diagc_attr_##N = { \ | |
408 | .attr = { .name = __stringify(N), .mode = 0664 }, \ | |
409 | .counter = offsetof(struct qib_ibport, rvp.n_##N) \ | |
410 | } | |
411 | ||
412 | #define QIB_DIAGC_ATTR_PER_CPU(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.z_##N) \ | |
416 | } | |
417 | ||
418 | struct qib_diagc_attr { | |
419 | struct attribute attr; | |
420 | size_t counter; | |
421 | }; | |
422 | ||
423 | QIB_DIAGC_ATTR_PER_CPU(rc_acks); | |
424 | QIB_DIAGC_ATTR_PER_CPU(rc_qacks); | |
425 | QIB_DIAGC_ATTR_PER_CPU(rc_delayed_comp); | |
426 | ||
427 | QIB_DIAGC_ATTR(rc_resends); | |
428 | QIB_DIAGC_ATTR(seq_naks); | |
429 | QIB_DIAGC_ATTR(rdma_seq); | |
430 | QIB_DIAGC_ATTR(rnr_naks); | |
431 | QIB_DIAGC_ATTR(other_naks); | |
432 | QIB_DIAGC_ATTR(rc_timeouts); | |
433 | QIB_DIAGC_ATTR(loop_pkts); | |
434 | QIB_DIAGC_ATTR(pkt_drops); | |
435 | QIB_DIAGC_ATTR(dmawait); | |
436 | QIB_DIAGC_ATTR(unaligned); | |
437 | QIB_DIAGC_ATTR(rc_dupreq); | |
438 | QIB_DIAGC_ATTR(rc_seqnak); | |
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 | NULL | |
457 | }; | |
458 | ||
459 | static u64 get_all_cpu_total(u64 __percpu *cntr) | |
460 | { | |
461 | int cpu; | |
462 | u64 counter = 0; | |
463 | ||
464 | for_each_possible_cpu(cpu) | |
465 | counter += *per_cpu_ptr(cntr, cpu); | |
466 | return counter; | |
467 | } | |
468 | ||
469 | #define def_write_per_cpu(cntr) \ | |
470 | static void write_per_cpu_##cntr(struct qib_pportdata *ppd, u32 data) \ | |
471 | { \ | |
472 | struct qib_devdata *dd = ppd->dd; \ | |
473 | struct qib_ibport *qibp = &ppd->ibport_data; \ | |
474 | /* A write can only zero the counter */ \ | |
475 | if (data == 0) \ | |
476 | qibp->rvp.z_##cntr = get_all_cpu_total(qibp->rvp.cntr); \ | |
477 | else \ | |
478 | qib_dev_err(dd, "Per CPU cntrs can only be zeroed"); \ | |
479 | } | |
480 | ||
481 | def_write_per_cpu(rc_acks) | |
482 | def_write_per_cpu(rc_qacks) | |
483 | def_write_per_cpu(rc_delayed_comp) | |
484 | ||
485 | #define READ_PER_CPU_CNTR(cntr) (get_all_cpu_total(qibp->rvp.cntr) - \ | |
486 | qibp->rvp.z_##cntr) | |
487 | ||
488 | static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr, | |
489 | char *buf) | |
490 | { | |
491 | struct qib_diagc_attr *dattr = | |
492 | container_of(attr, struct qib_diagc_attr, attr); | |
493 | struct qib_pportdata *ppd = | |
494 | container_of(kobj, struct qib_pportdata, diagc_kobj); | |
495 | struct qib_ibport *qibp = &ppd->ibport_data; | |
496 | ||
497 | if (!strncmp(dattr->attr.name, "rc_acks", 7)) | |
498 | return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_acks)); | |
499 | else if (!strncmp(dattr->attr.name, "rc_qacks", 8)) | |
500 | return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_qacks)); | |
501 | else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15)) | |
502 | return sprintf(buf, "%llu\n", | |
503 | READ_PER_CPU_CNTR(rc_delayed_comp)); | |
504 | else | |
505 | return sprintf(buf, "%u\n", | |
506 | *(u32 *)((char *)qibp + dattr->counter)); | |
507 | } | |
508 | ||
509 | static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr, | |
510 | const char *buf, size_t size) | |
511 | { | |
512 | struct qib_diagc_attr *dattr = | |
513 | container_of(attr, struct qib_diagc_attr, attr); | |
514 | struct qib_pportdata *ppd = | |
515 | container_of(kobj, struct qib_pportdata, diagc_kobj); | |
516 | struct qib_ibport *qibp = &ppd->ibport_data; | |
517 | u32 val; | |
518 | int ret; | |
519 | ||
520 | ret = kstrtou32(buf, 0, &val); | |
521 | if (ret) | |
522 | return ret; | |
523 | ||
524 | if (!strncmp(dattr->attr.name, "rc_acks", 7)) | |
525 | write_per_cpu_rc_acks(ppd, val); | |
526 | else if (!strncmp(dattr->attr.name, "rc_qacks", 8)) | |
527 | write_per_cpu_rc_qacks(ppd, val); | |
528 | else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15)) | |
529 | write_per_cpu_rc_delayed_comp(ppd, val); | |
530 | else | |
531 | *(u32 *)((char *)qibp + dattr->counter) = val; | |
532 | return size; | |
533 | } | |
534 | ||
535 | static const struct sysfs_ops qib_diagc_ops = { | |
536 | .show = diagc_attr_show, | |
537 | .store = diagc_attr_store, | |
538 | }; | |
539 | ||
540 | static struct kobj_type qib_diagc_ktype = { | |
541 | .release = qib_port_release, | |
542 | .sysfs_ops = &qib_diagc_ops, | |
543 | .default_attrs = diagc_default_attributes | |
544 | }; | |
545 | ||
546 | /* End diag_counters */ | |
547 | ||
548 | /* end of per-port file structures and support code */ | |
549 | ||
550 | /* | |
551 | * Start of per-unit (or driver, in some cases, but replicated | |
552 | * per unit) functions (these get a device *) | |
553 | */ | |
554 | static ssize_t show_rev(struct device *device, struct device_attribute *attr, | |
555 | char *buf) | |
556 | { | |
557 | struct qib_ibdev *dev = | |
558 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
559 | ||
560 | return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev); | |
561 | } | |
562 | ||
563 | static ssize_t show_hca(struct device *device, struct device_attribute *attr, | |
564 | char *buf) | |
565 | { | |
566 | struct qib_ibdev *dev = | |
567 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
568 | struct qib_devdata *dd = dd_from_dev(dev); | |
569 | int ret; | |
570 | ||
571 | if (!dd->boardname) | |
572 | ret = -EINVAL; | |
573 | else | |
574 | ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname); | |
575 | return ret; | |
576 | } | |
577 | ||
578 | static ssize_t show_version(struct device *device, | |
579 | struct device_attribute *attr, char *buf) | |
580 | { | |
581 | /* The string printed here is already newline-terminated. */ | |
582 | return scnprintf(buf, PAGE_SIZE, "%s", (char *)ib_qib_version); | |
583 | } | |
584 | ||
585 | static ssize_t show_boardversion(struct device *device, | |
586 | struct device_attribute *attr, char *buf) | |
587 | { | |
588 | struct qib_ibdev *dev = | |
589 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
590 | struct qib_devdata *dd = dd_from_dev(dev); | |
591 | ||
592 | /* The string printed here is already newline-terminated. */ | |
593 | return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion); | |
594 | } | |
595 | ||
596 | ||
597 | static ssize_t show_localbus_info(struct device *device, | |
598 | struct device_attribute *attr, char *buf) | |
599 | { | |
600 | struct qib_ibdev *dev = | |
601 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
602 | struct qib_devdata *dd = dd_from_dev(dev); | |
603 | ||
604 | /* The string printed here is already newline-terminated. */ | |
605 | return scnprintf(buf, PAGE_SIZE, "%s", dd->lbus_info); | |
606 | } | |
607 | ||
608 | ||
609 | static ssize_t show_nctxts(struct device *device, | |
610 | struct device_attribute *attr, char *buf) | |
611 | { | |
612 | struct qib_ibdev *dev = | |
613 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
614 | struct qib_devdata *dd = dd_from_dev(dev); | |
615 | ||
616 | /* Return the number of user ports (contexts) available. */ | |
617 | /* The calculation below deals with a special case where | |
618 | * cfgctxts is set to 1 on a single-port board. */ | |
619 | return scnprintf(buf, PAGE_SIZE, "%u\n", | |
620 | (dd->first_user_ctxt > dd->cfgctxts) ? 0 : | |
621 | (dd->cfgctxts - dd->first_user_ctxt)); | |
622 | } | |
623 | ||
624 | static ssize_t show_nfreectxts(struct device *device, | |
625 | struct device_attribute *attr, char *buf) | |
626 | { | |
627 | struct qib_ibdev *dev = | |
628 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
629 | struct qib_devdata *dd = dd_from_dev(dev); | |
630 | ||
631 | /* Return the number of free user ports (contexts) available. */ | |
632 | return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts); | |
633 | } | |
634 | ||
635 | static ssize_t show_serial(struct device *device, | |
636 | struct device_attribute *attr, char *buf) | |
637 | { | |
638 | struct qib_ibdev *dev = | |
639 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
640 | struct qib_devdata *dd = dd_from_dev(dev); | |
641 | ||
642 | buf[sizeof(dd->serial)] = '\0'; | |
643 | memcpy(buf, dd->serial, sizeof(dd->serial)); | |
644 | strcat(buf, "\n"); | |
645 | return strlen(buf); | |
646 | } | |
647 | ||
648 | static ssize_t store_chip_reset(struct device *device, | |
649 | struct device_attribute *attr, const char *buf, | |
650 | size_t count) | |
651 | { | |
652 | struct qib_ibdev *dev = | |
653 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
654 | struct qib_devdata *dd = dd_from_dev(dev); | |
655 | int ret; | |
656 | ||
657 | if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) { | |
658 | ret = -EINVAL; | |
659 | goto bail; | |
660 | } | |
661 | ||
662 | ret = qib_reset_device(dd->unit); | |
663 | bail: | |
664 | return ret < 0 ? ret : count; | |
665 | } | |
666 | ||
667 | /* | |
668 | * Dump tempsense regs. in decimal, to ease shell-scripts. | |
669 | */ | |
670 | static ssize_t show_tempsense(struct device *device, | |
671 | struct device_attribute *attr, char *buf) | |
672 | { | |
673 | struct qib_ibdev *dev = | |
674 | container_of(device, struct qib_ibdev, rdi.ibdev.dev); | |
675 | struct qib_devdata *dd = dd_from_dev(dev); | |
676 | int ret; | |
677 | int idx; | |
678 | u8 regvals[8]; | |
679 | ||
680 | ret = -ENXIO; | |
681 | for (idx = 0; idx < 8; ++idx) { | |
682 | if (idx == 6) | |
683 | continue; | |
684 | ret = dd->f_tempsense_rd(dd, idx); | |
685 | if (ret < 0) | |
686 | break; | |
687 | regvals[idx] = ret; | |
688 | } | |
689 | if (idx == 8) | |
690 | ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n", | |
691 | *(signed char *)(regvals), | |
692 | *(signed char *)(regvals + 1), | |
693 | regvals[2], regvals[3], | |
694 | *(signed char *)(regvals + 5), | |
695 | *(signed char *)(regvals + 7)); | |
696 | return ret; | |
697 | } | |
698 | ||
699 | /* | |
700 | * end of per-unit (or driver, in some cases, but replicated | |
701 | * per unit) functions | |
702 | */ | |
703 | ||
704 | /* start of per-unit file structures and support code */ | |
705 | static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); | |
706 | static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
707 | static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL); | |
708 | static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); | |
709 | static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL); | |
710 | static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL); | |
711 | static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL); | |
712 | static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL); | |
713 | static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL); | |
714 | static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL); | |
715 | static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset); | |
716 | ||
717 | static struct device_attribute *qib_attributes[] = { | |
718 | &dev_attr_hw_rev, | |
719 | &dev_attr_hca_type, | |
720 | &dev_attr_board_id, | |
721 | &dev_attr_version, | |
722 | &dev_attr_nctxts, | |
723 | &dev_attr_nfreectxts, | |
724 | &dev_attr_serial, | |
725 | &dev_attr_boardversion, | |
726 | &dev_attr_tempsense, | |
727 | &dev_attr_localbus_info, | |
728 | &dev_attr_chip_reset, | |
729 | }; | |
730 | ||
731 | int qib_create_port_files(struct ib_device *ibdev, u8 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; | |
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_link; | |
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_sl; | |
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_diagc; | |
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 | * Register and create our files in /sys/class/infiniband. | |
831 | */ | |
832 | int qib_verbs_register_sysfs(struct qib_devdata *dd) | |
833 | { | |
834 | struct ib_device *dev = &dd->verbs_dev.rdi.ibdev; | |
835 | int i, ret; | |
836 | ||
837 | for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i) { | |
838 | ret = device_create_file(&dev->dev, qib_attributes[i]); | |
839 | if (ret) | |
840 | goto bail; | |
841 | } | |
842 | ||
843 | return 0; | |
844 | bail: | |
845 | for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i) | |
846 | device_remove_file(&dev->dev, qib_attributes[i]); | |
847 | return ret; | |
848 | } | |
849 | ||
850 | /* | |
851 | * Unregister and remove our files in /sys/class/infiniband. | |
852 | */ | |
853 | void qib_verbs_unregister_sysfs(struct qib_devdata *dd) | |
854 | { | |
855 | struct qib_pportdata *ppd; | |
856 | int i; | |
857 | ||
858 | for (i = 0; i < dd->num_pports; i++) { | |
859 | ppd = &dd->pport[i]; | |
860 | if (qib_cc_table_size && | |
861 | ppd->congestion_entries_shadow) { | |
862 | sysfs_remove_bin_file(&ppd->pport_cc_kobj, | |
863 | &cc_setting_bin_attr); | |
864 | sysfs_remove_bin_file(&ppd->pport_cc_kobj, | |
865 | &cc_table_bin_attr); | |
866 | kobject_put(&ppd->pport_cc_kobj); | |
867 | } | |
868 | kobject_put(&ppd->sl2vl_kobj); | |
869 | kobject_put(&ppd->pport_kobj); | |
870 | } | |
871 | } |