Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
[linux-2.6] / drivers / infiniband / hw / ipath / ipath_sysfs.c
1 /*
2  * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
3  * Copyright (c) 2006 PathScale, Inc. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33
34 #include <linux/ctype.h>
35
36 #include "ipath_kernel.h"
37 #include "ipath_common.h"
38
39 /**
40  * ipath_parse_ushort - parse an unsigned short value in an arbitrary base
41  * @str: the string containing the number
42  * @valp: where to put the result
43  *
44  * returns the number of bytes consumed, or negative value on error
45  */
46 int ipath_parse_ushort(const char *str, unsigned short *valp)
47 {
48         unsigned long val;
49         char *end;
50         int ret;
51
52         if (!isdigit(str[0])) {
53                 ret = -EINVAL;
54                 goto bail;
55         }
56
57         val = simple_strtoul(str, &end, 0);
58
59         if (val > 0xffff) {
60                 ret = -EINVAL;
61                 goto bail;
62         }
63
64         *valp = val;
65
66         ret = end + 1 - str;
67         if (ret == 0)
68                 ret = -EINVAL;
69
70 bail:
71         return ret;
72 }
73
74 static ssize_t show_version(struct device_driver *dev, char *buf)
75 {
76         /* The string printed here is already newline-terminated. */
77         return scnprintf(buf, PAGE_SIZE, "%s", ib_ipath_version);
78 }
79
80 static ssize_t show_num_units(struct device_driver *dev, char *buf)
81 {
82         return scnprintf(buf, PAGE_SIZE, "%d\n",
83                          ipath_count_units(NULL, NULL, NULL));
84 }
85
86 static ssize_t show_status(struct device *dev,
87                            struct device_attribute *attr,
88                            char *buf)
89 {
90         struct ipath_devdata *dd = dev_get_drvdata(dev);
91         ssize_t ret;
92
93         if (!dd->ipath_statusp) {
94                 ret = -EINVAL;
95                 goto bail;
96         }
97
98         ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
99                         (unsigned long long) *(dd->ipath_statusp));
100
101 bail:
102         return ret;
103 }
104
105 static const char *ipath_status_str[] = {
106         "Initted",
107         "Disabled",
108         "Admin_Disabled",
109         "", /* This used to be the old "OIB_SMA" status. */
110         "", /* This used to be the old "SMA" status. */
111         "Present",
112         "IB_link_up",
113         "IB_configured",
114         "NoIBcable",
115         "Fatal_Hardware_Error",
116         NULL,
117 };
118
119 static ssize_t show_status_str(struct device *dev,
120                                struct device_attribute *attr,
121                                char *buf)
122 {
123         struct ipath_devdata *dd = dev_get_drvdata(dev);
124         int i, any;
125         u64 s;
126         ssize_t ret;
127
128         if (!dd->ipath_statusp) {
129                 ret = -EINVAL;
130                 goto bail;
131         }
132
133         s = *(dd->ipath_statusp);
134         *buf = '\0';
135         for (any = i = 0; s && ipath_status_str[i]; i++) {
136                 if (s & 1) {
137                         if (any && strlcat(buf, " ", PAGE_SIZE) >=
138                             PAGE_SIZE)
139                                 /* overflow */
140                                 break;
141                         if (strlcat(buf, ipath_status_str[i],
142                                     PAGE_SIZE) >= PAGE_SIZE)
143                                 break;
144                         any = 1;
145                 }
146                 s >>= 1;
147         }
148         if (any)
149                 strlcat(buf, "\n", PAGE_SIZE);
150
151         ret = strlen(buf);
152
153 bail:
154         return ret;
155 }
156
157 static ssize_t show_boardversion(struct device *dev,
158                                struct device_attribute *attr,
159                                char *buf)
160 {
161         struct ipath_devdata *dd = dev_get_drvdata(dev);
162         /* The string printed here is already newline-terminated. */
163         return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
164 }
165
166 static ssize_t show_lmc(struct device *dev,
167                         struct device_attribute *attr,
168                         char *buf)
169 {
170         struct ipath_devdata *dd = dev_get_drvdata(dev);
171
172         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc);
173 }
174
175 static ssize_t store_lmc(struct device *dev,
176                          struct device_attribute *attr,
177                          const char *buf,
178                          size_t count)
179 {
180         struct ipath_devdata *dd = dev_get_drvdata(dev);
181         u16 lmc = 0;
182         int ret;
183
184         ret = ipath_parse_ushort(buf, &lmc);
185         if (ret < 0)
186                 goto invalid;
187
188         if (lmc > 7) {
189                 ret = -EINVAL;
190                 goto invalid;
191         }
192
193         ipath_set_lid(dd, dd->ipath_lid, lmc);
194
195         goto bail;
196 invalid:
197         ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc);
198 bail:
199         return ret;
200 }
201
202 static ssize_t show_lid(struct device *dev,
203                         struct device_attribute *attr,
204                         char *buf)
205 {
206         struct ipath_devdata *dd = dev_get_drvdata(dev);
207
208         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
209 }
210
211 static ssize_t store_lid(struct device *dev,
212                          struct device_attribute *attr,
213                           const char *buf,
214                           size_t count)
215 {
216         struct ipath_devdata *dd = dev_get_drvdata(dev);
217         u16 lid = 0;
218         int ret;
219
220         ret = ipath_parse_ushort(buf, &lid);
221         if (ret < 0)
222                 goto invalid;
223
224         if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
225                 ret = -EINVAL;
226                 goto invalid;
227         }
228
229         ipath_set_lid(dd, lid, dd->ipath_lmc);
230
231         goto bail;
232 invalid:
233         ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
234 bail:
235         return ret;
236 }
237
238 static ssize_t show_mlid(struct device *dev,
239                          struct device_attribute *attr,
240                          char *buf)
241 {
242         struct ipath_devdata *dd = dev_get_drvdata(dev);
243
244         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
245 }
246
247 static ssize_t store_mlid(struct device *dev,
248                          struct device_attribute *attr,
249                           const char *buf,
250                           size_t count)
251 {
252         struct ipath_devdata *dd = dev_get_drvdata(dev);
253         u16 mlid;
254         int ret;
255
256         ret = ipath_parse_ushort(buf, &mlid);
257         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
258                 goto invalid;
259
260         dd->ipath_mlid = mlid;
261
262         goto bail;
263 invalid:
264         ipath_dev_err(dd, "attempt to set invalid MLID\n");
265 bail:
266         return ret;
267 }
268
269 static ssize_t show_guid(struct device *dev,
270                          struct device_attribute *attr,
271                          char *buf)
272 {
273         struct ipath_devdata *dd = dev_get_drvdata(dev);
274         u8 *guid;
275
276         guid = (u8 *) & (dd->ipath_guid);
277
278         return scnprintf(buf, PAGE_SIZE,
279                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
280                          guid[0], guid[1], guid[2], guid[3],
281                          guid[4], guid[5], guid[6], guid[7]);
282 }
283
284 static ssize_t store_guid(struct device *dev,
285                          struct device_attribute *attr,
286                           const char *buf,
287                           size_t count)
288 {
289         struct ipath_devdata *dd = dev_get_drvdata(dev);
290         ssize_t ret;
291         unsigned short guid[8];
292         __be64 new_guid;
293         u8 *ng;
294         int i;
295
296         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
297                    &guid[0], &guid[1], &guid[2], &guid[3],
298                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
299                 goto invalid;
300
301         ng = (u8 *) &new_guid;
302
303         for (i = 0; i < 8; i++) {
304                 if (guid[i] > 0xff)
305                         goto invalid;
306                 ng[i] = guid[i];
307         }
308
309         if (new_guid == 0)
310                 goto invalid;
311
312         dd->ipath_guid = new_guid;
313         dd->ipath_nguid = 1;
314
315         ret = strlen(buf);
316         goto bail;
317
318 invalid:
319         ipath_dev_err(dd, "attempt to set invalid GUID\n");
320         ret = -EINVAL;
321
322 bail:
323         return ret;
324 }
325
326 static ssize_t show_nguid(struct device *dev,
327                           struct device_attribute *attr,
328                           char *buf)
329 {
330         struct ipath_devdata *dd = dev_get_drvdata(dev);
331
332         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
333 }
334
335 static ssize_t show_nports(struct device *dev,
336                            struct device_attribute *attr,
337                            char *buf)
338 {
339         struct ipath_devdata *dd = dev_get_drvdata(dev);
340
341         /* Return the number of user ports available. */
342         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
343 }
344
345 static ssize_t show_serial(struct device *dev,
346                            struct device_attribute *attr,
347                            char *buf)
348 {
349         struct ipath_devdata *dd = dev_get_drvdata(dev);
350
351         buf[sizeof dd->ipath_serial] = '\0';
352         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
353         strcat(buf, "\n");
354         return strlen(buf);
355 }
356
357 static ssize_t show_unit(struct device *dev,
358                          struct device_attribute *attr,
359                          char *buf)
360 {
361         struct ipath_devdata *dd = dev_get_drvdata(dev);
362
363         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
364 }
365
366 #define DEVICE_COUNTER(name, attr) \
367         static ssize_t show_counter_##name(struct device *dev, \
368                                            struct device_attribute *attr, \
369                                            char *buf) \
370         { \
371                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
372                 return scnprintf(\
373                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
374                         ipath_snap_cntr( \
375                                 dd, offsetof(struct infinipath_counters, \
376                                              attr) / sizeof(u64)));     \
377         } \
378         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
379
380 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
381 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
382 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
383 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
384 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
385 DEVICE_COUNTER(lb_ints, LBIntCnt);
386 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
387 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
388 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
389 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
390 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
391 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
392 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
393 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
394 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
395 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
396 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
397 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
398 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
399 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
400 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
401 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
402 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
403 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
404 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
405 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
406 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
407 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
408 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
409 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
410 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
411 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
412 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
413 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
414 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
415 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
416 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
417 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
418 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
419 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
420 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
421
422 static struct attribute *dev_counter_attributes[] = {
423         &dev_attr_ib_link_downeds.attr,
424         &dev_attr_ib_link_err_recoveries.attr,
425         &dev_attr_ib_status_changes.attr,
426         &dev_attr_ib_symbol_errs.attr,
427         &dev_attr_lb_flow_stalls.attr,
428         &dev_attr_lb_ints.attr,
429         &dev_attr_rx_bad_formats.attr,
430         &dev_attr_rx_buf_ovfls.attr,
431         &dev_attr_rx_data_pkts.attr,
432         &dev_attr_rx_dropped_pkts.attr,
433         &dev_attr_rx_dwords.attr,
434         &dev_attr_rx_ebps.attr,
435         &dev_attr_rx_flow_ctrl_errs.attr,
436         &dev_attr_rx_flow_pkts.attr,
437         &dev_attr_rx_icrc_errs.attr,
438         &dev_attr_rx_len_errs.attr,
439         &dev_attr_rx_link_problems.attr,
440         &dev_attr_rx_lpcrc_errs.attr,
441         &dev_attr_rx_max_min_len_errs.attr,
442         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
443         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
444         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
445         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
446         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
447         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
448         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
449         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
450         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
451         &dev_attr_rx_pkey_mismatches.attr,
452         &dev_attr_rx_tid_full_errs.attr,
453         &dev_attr_rx_tid_valid_errs.attr,
454         &dev_attr_rx_vcrc_errs.attr,
455         &dev_attr_tx_data_pkts.attr,
456         &dev_attr_tx_dropped_pkts.attr,
457         &dev_attr_tx_dwords.attr,
458         &dev_attr_tx_flow_pkts.attr,
459         &dev_attr_tx_flow_stalls.attr,
460         &dev_attr_tx_len_errs.attr,
461         &dev_attr_tx_max_min_len_errs.attr,
462         &dev_attr_tx_underruns.attr,
463         &dev_attr_tx_unsup_vl_errs.attr,
464         NULL
465 };
466
467 static struct attribute_group dev_counter_attr_group = {
468         .name = "counters",
469         .attrs = dev_counter_attributes
470 };
471
472 static ssize_t store_reset(struct device *dev,
473                          struct device_attribute *attr,
474                           const char *buf,
475                           size_t count)
476 {
477         struct ipath_devdata *dd = dev_get_drvdata(dev);
478         int ret;
479
480         if (count < 5 || memcmp(buf, "reset", 5)) {
481                 ret = -EINVAL;
482                 goto bail;
483         }
484
485         if (dd->ipath_flags & IPATH_DISABLED) {
486                 /*
487                  * post-reset init would re-enable interrupts, etc.
488                  * so don't allow reset on disabled devices.  Not
489                  * perfect error, but about the best choice.
490                  */
491                 dev_info(dev,"Unit %d is disabled, can't reset\n",
492                          dd->ipath_unit);
493                 ret = -EINVAL;
494         }
495         ret = ipath_reset_device(dd->ipath_unit);
496 bail:
497         return ret<0 ? ret : count;
498 }
499
500 static ssize_t store_link_state(struct device *dev,
501                          struct device_attribute *attr,
502                           const char *buf,
503                           size_t count)
504 {
505         struct ipath_devdata *dd = dev_get_drvdata(dev);
506         int ret, r;
507         u16 state;
508
509         ret = ipath_parse_ushort(buf, &state);
510         if (ret < 0)
511                 goto invalid;
512
513         r = ipath_set_linkstate(dd, state);
514         if (r < 0) {
515                 ret = r;
516                 goto bail;
517         }
518
519         goto bail;
520 invalid:
521         ipath_dev_err(dd, "attempt to set invalid link state\n");
522 bail:
523         return ret;
524 }
525
526 static ssize_t show_mtu(struct device *dev,
527                          struct device_attribute *attr,
528                          char *buf)
529 {
530         struct ipath_devdata *dd = dev_get_drvdata(dev);
531         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
532 }
533
534 static ssize_t store_mtu(struct device *dev,
535                          struct device_attribute *attr,
536                           const char *buf,
537                           size_t count)
538 {
539         struct ipath_devdata *dd = dev_get_drvdata(dev);
540         ssize_t ret;
541         u16 mtu = 0;
542         int r;
543
544         ret = ipath_parse_ushort(buf, &mtu);
545         if (ret < 0)
546                 goto invalid;
547
548         r = ipath_set_mtu(dd, mtu);
549         if (r < 0)
550                 ret = r;
551
552         goto bail;
553 invalid:
554         ipath_dev_err(dd, "attempt to set invalid MTU\n");
555 bail:
556         return ret;
557 }
558
559 static ssize_t show_enabled(struct device *dev,
560                          struct device_attribute *attr,
561                          char *buf)
562 {
563         struct ipath_devdata *dd = dev_get_drvdata(dev);
564         return scnprintf(buf, PAGE_SIZE, "%u\n",
565                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
566 }
567
568 static ssize_t store_enabled(struct device *dev,
569                          struct device_attribute *attr,
570                           const char *buf,
571                           size_t count)
572 {
573         struct ipath_devdata *dd = dev_get_drvdata(dev);
574         ssize_t ret;
575         u16 enable = 0;
576
577         ret = ipath_parse_ushort(buf, &enable);
578         if (ret < 0) {
579                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
580                 goto bail;
581         }
582
583         if (enable) {
584                 if (!(dd->ipath_flags & IPATH_DISABLED))
585                         goto bail;
586
587                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
588                 /* same as post-reset */
589                 ret = ipath_init_chip(dd, 1);
590                 if (ret)
591                         ipath_dev_err(dd, "Failed to enable unit %d\n",
592                                       dd->ipath_unit);
593                 else {
594                         dd->ipath_flags &= ~IPATH_DISABLED;
595                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
596                 }
597         }
598         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
599                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
600                 ipath_shutdown_device(dd);
601                 dd->ipath_flags |= IPATH_DISABLED;
602                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
603         }
604
605 bail:
606         return ret;
607 }
608
609 static ssize_t store_rx_pol_inv(struct device *dev,
610                           struct device_attribute *attr,
611                           const char *buf,
612                           size_t count)
613 {
614         struct ipath_devdata *dd = dev_get_drvdata(dev);
615         int ret, r;
616         u16 val;
617
618         ret = ipath_parse_ushort(buf, &val);
619         if (ret < 0)
620                 goto invalid;
621
622         r = ipath_set_rx_pol_inv(dd, val);
623         if (r < 0) {
624                 ret = r;
625                 goto bail;
626         }
627
628         goto bail;
629 invalid:
630         ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
631 bail:
632         return ret;
633 }
634
635 static ssize_t store_led_override(struct device *dev,
636                           struct device_attribute *attr,
637                           const char *buf,
638                           size_t count)
639 {
640         struct ipath_devdata *dd = dev_get_drvdata(dev);
641         int ret;
642         u16 val;
643
644         ret = ipath_parse_ushort(buf, &val);
645         if (ret > 0)
646                 ipath_set_led_override(dd, val);
647         else
648                 ipath_dev_err(dd, "attempt to set invalid LED override\n");
649         return ret;
650 }
651
652 static ssize_t show_logged_errs(struct device *dev,
653                                 struct device_attribute *attr,
654                                 char *buf)
655 {
656         struct ipath_devdata *dd = dev_get_drvdata(dev);
657         int idx, count;
658
659         /* force consistency with actual EEPROM */
660         if (ipath_update_eeprom_log(dd) != 0)
661                 return -ENXIO;
662
663         count = 0;
664         for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) {
665                 count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
666                         dd->ipath_eep_st_errs[idx],
667                         idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' ');
668         }
669
670         return count;
671 }
672
673 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
674 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
675
676 static struct attribute *driver_attributes[] = {
677         &driver_attr_num_units.attr,
678         &driver_attr_version.attr,
679         NULL
680 };
681
682 static struct attribute_group driver_attr_group = {
683         .attrs = driver_attributes
684 };
685
686 struct attribute_group *ipath_driver_attr_groups[] = {
687         &driver_attr_group,
688         NULL,
689 };
690
691 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
692 static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc);
693 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
694 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
695 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
696 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
697 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
698 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
699 static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
700 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
701 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
702 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
703 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
704 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
705 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
706 static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
707 static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override);
708 static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
709
710 static struct attribute *dev_attributes[] = {
711         &dev_attr_guid.attr,
712         &dev_attr_lmc.attr,
713         &dev_attr_lid.attr,
714         &dev_attr_link_state.attr,
715         &dev_attr_mlid.attr,
716         &dev_attr_mtu.attr,
717         &dev_attr_nguid.attr,
718         &dev_attr_nports.attr,
719         &dev_attr_serial.attr,
720         &dev_attr_status.attr,
721         &dev_attr_status_str.attr,
722         &dev_attr_boardversion.attr,
723         &dev_attr_unit.attr,
724         &dev_attr_enabled.attr,
725         &dev_attr_rx_pol_inv.attr,
726         &dev_attr_led_override.attr,
727         &dev_attr_logged_errors.attr,
728         NULL
729 };
730
731 static struct attribute_group dev_attr_group = {
732         .attrs = dev_attributes
733 };
734
735 /**
736  * ipath_expose_reset - create a device reset file
737  * @dev: the device structure
738  *
739  * Only expose a file that lets us reset the device after someone
740  * enters diag mode.  A device reset is quite likely to crash the
741  * machine entirely, so we don't want to normally make it
742  * available.
743  *
744  * Called with ipath_mutex held.
745  */
746 int ipath_expose_reset(struct device *dev)
747 {
748         static int exposed;
749         int ret;
750
751         if (!exposed) {
752                 ret = device_create_file(dev, &dev_attr_reset);
753                 exposed = 1;
754         }
755         else
756                 ret = 0;
757
758         return ret;
759 }
760
761 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
762 {
763         int ret;
764
765         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
766         if (ret)
767                 goto bail;
768
769         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
770         if (ret)
771                 goto bail_attrs;
772
773         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
774 bail_attrs:
775         sysfs_remove_group(&dev->kobj, &dev_attr_group);
776 bail:
777         return ret;
778 }
779
780 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
781 {
782         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
783         sysfs_remove_group(&dev->kobj, &dev_attr_group);
784
785         device_remove_file(dev, &dev_attr_reset);
786 }