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[PATCH] IB/ipath: fix shared receive queues for RC
[linux-2.6-block.git] / drivers / infiniband / hw / ipath / ipath_sysfs.c
CommitLineData
3e9b4a5e 1/*
759d5768 2 * Copyright (c) 2006 QLogic, Inc. All rights reserved.
3e9b4a5e
BS		 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#include <linux/pci.h>
36
37#include "ipath_kernel.h"
38#include "ips_common.h"
39#include "ipath_layer.h"
40
41/**
42 * ipath_parse_ushort - parse an unsigned short value in an arbitrary base
43 * @str: the string containing the number
44 * @valp: where to put the result
45 *
46 * returns the number of bytes consumed, or negative value on error
47 */
48int ipath_parse_ushort(const char *str, unsigned short *valp)
49{
50 unsigned long val;
51 char *end;
52 int ret;
53
54 if (!isdigit(str[0])) {
55 ret = -EINVAL;
56 goto bail;
57 }
58
59 val = simple_strtoul(str, &end, 0);
60
61 if (val > 0xffff) {
62 ret = -EINVAL;
63 goto bail;
64 }
65
66 *valp = val;
67
68 ret = end + 1 - str;
69 if (ret == 0)
70 ret = -EINVAL;
71
72bail:
73 return ret;
74}
75
76static ssize_t show_version(struct device_driver *dev, char *buf)
77{
78 /* The string printed here is already newline-terminated. */
79 return scnprintf(buf, PAGE_SIZE, "%s", ipath_core_version);
80}
81
82static ssize_t show_num_units(struct device_driver *dev, char *buf)
83{
84 return scnprintf(buf, PAGE_SIZE, "%d\n",
85 ipath_count_units(NULL, NULL, NULL));
86}
87
88#define DRIVER_STAT(name, attr) \
89 static ssize_t show_stat_##name(struct device_driver *dev, \
90 char *buf) \
91 { \
92 return scnprintf( \
93 buf, PAGE_SIZE, "%llu\n", \
94 (unsigned long long) ipath_stats.sps_ ##attr); \
95 } \
96 static DRIVER_ATTR(name, S_IRUGO, show_stat_##name, NULL)
97
98DRIVER_STAT(intrs, ints);
99DRIVER_STAT(err_intrs, errints);
100DRIVER_STAT(errs, errs);
101DRIVER_STAT(pkt_errs, pkterrs);
102DRIVER_STAT(crc_errs, crcerrs);
103DRIVER_STAT(hw_errs, hwerrs);
104DRIVER_STAT(ib_link, iblink);
105DRIVER_STAT(port0_pkts, port0pkts);
106DRIVER_STAT(ether_spkts, ether_spkts);
107DRIVER_STAT(ether_rpkts, ether_rpkts);
108DRIVER_STAT(sma_spkts, sma_spkts);
109DRIVER_STAT(sma_rpkts, sma_rpkts);
110DRIVER_STAT(hdrq_full, hdrqfull);
111DRIVER_STAT(etid_full, etidfull);
112DRIVER_STAT(no_piobufs, nopiobufs);
113DRIVER_STAT(ports, ports);
114DRIVER_STAT(pkey0, pkeys[0]);
115DRIVER_STAT(pkey1, pkeys[1]);
116DRIVER_STAT(pkey2, pkeys[2]);
117DRIVER_STAT(pkey3, pkeys[3]);
118/* XXX fix the following when dynamic table of devices used */
119DRIVER_STAT(lid0, lid[0]);
120DRIVER_STAT(lid1, lid[1]);
121DRIVER_STAT(lid2, lid[2]);
122DRIVER_STAT(lid3, lid[3]);
123
124DRIVER_STAT(nports, nports);
125DRIVER_STAT(null_intr, nullintr);
126DRIVER_STAT(max_pkts_call, maxpkts_call);
127DRIVER_STAT(avg_pkts_call, avgpkts_call);
128DRIVER_STAT(page_locks, pagelocks);
129DRIVER_STAT(page_unlocks, pageunlocks);
130DRIVER_STAT(krdrops, krdrops);
131/* XXX fix the following when dynamic table of devices used */
132DRIVER_STAT(mlid0, mlid[0]);
133DRIVER_STAT(mlid1, mlid[1]);
134DRIVER_STAT(mlid2, mlid[2]);
135DRIVER_STAT(mlid3, mlid[3]);
136
137static struct attribute *driver_stat_attributes[] = {
138 &driver_attr_intrs.attr,
139 &driver_attr_err_intrs.attr,
140 &driver_attr_errs.attr,
141 &driver_attr_pkt_errs.attr,
142 &driver_attr_crc_errs.attr,
143 &driver_attr_hw_errs.attr,
144 &driver_attr_ib_link.attr,
145 &driver_attr_port0_pkts.attr,
146 &driver_attr_ether_spkts.attr,
147 &driver_attr_ether_rpkts.attr,
148 &driver_attr_sma_spkts.attr,
149 &driver_attr_sma_rpkts.attr,
150 &driver_attr_hdrq_full.attr,
151 &driver_attr_etid_full.attr,
152 &driver_attr_no_piobufs.attr,
153 &driver_attr_ports.attr,
154 &driver_attr_pkey0.attr,
155 &driver_attr_pkey1.attr,
156 &driver_attr_pkey2.attr,
157 &driver_attr_pkey3.attr,
158 &driver_attr_lid0.attr,
159 &driver_attr_lid1.attr,
160 &driver_attr_lid2.attr,
161 &driver_attr_lid3.attr,
162 &driver_attr_nports.attr,
163 &driver_attr_null_intr.attr,
164 &driver_attr_max_pkts_call.attr,
165 &driver_attr_avg_pkts_call.attr,
166 &driver_attr_page_locks.attr,
167 &driver_attr_page_unlocks.attr,
168 &driver_attr_krdrops.attr,
169 &driver_attr_mlid0.attr,
170 &driver_attr_mlid1.attr,
171 &driver_attr_mlid2.attr,
172 &driver_attr_mlid3.attr,
173 NULL
174};
175
176static struct attribute_group driver_stat_attr_group = {
177 .name = "stats",
178 .attrs = driver_stat_attributes
179};
180
181static ssize_t show_status(struct device *dev,
182 struct device_attribute *attr,
183 char *buf)
184{
185 struct ipath_devdata *dd = dev_get_drvdata(dev);
186 ssize_t ret;
187
188 if (!dd->ipath_statusp) {
189 ret = -EINVAL;
190 goto bail;
191 }
192
193 ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
194 (unsigned long long) *(dd->ipath_statusp));
195
196bail:
197 return ret;
198}
199
200static const char *ipath_status_str[] = {
201 "Initted",
202 "Disabled",
203 "Admin_Disabled",
204 "OIB_SMA",
205 "SMA",
206 "Present",
207 "IB_link_up",
208 "IB_configured",
209 "NoIBcable",
210 "Fatal_Hardware_Error",
211 NULL,
212};
213
214static ssize_t show_status_str(struct device *dev,
215 struct device_attribute *attr,
216 char *buf)
217{
218 struct ipath_devdata *dd = dev_get_drvdata(dev);
219 int i, any;
220 u64 s;
221 ssize_t ret;
222
223 if (!dd->ipath_statusp) {
224 ret = -EINVAL;
225 goto bail;
226 }
227
228 s = *(dd->ipath_statusp);
229 *buf = '\0';
230 for (any = i = 0; s && ipath_status_str[i]; i++) {
231 if (s & 1) {
232 if (any && strlcat(buf, " ", PAGE_SIZE) >=
233 PAGE_SIZE)
234 /* overflow */
235 break;
236 if (strlcat(buf, ipath_status_str[i],
237 PAGE_SIZE) >= PAGE_SIZE)
238 break;
239 any = 1;
240 }
241 s >>= 1;
242 }
243 if (any)
244 strlcat(buf, "\n", PAGE_SIZE);
245
246 ret = strlen(buf);
247
248bail:
249 return ret;
250}
251
252static ssize_t show_boardversion(struct device *dev,
253 struct device_attribute *attr,
254 char *buf)
255{
256 struct ipath_devdata *dd = dev_get_drvdata(dev);
257 /* The string printed here is already newline-terminated. */
258 return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
259}
260
261static ssize_t show_lid(struct device *dev,
262 struct device_attribute *attr,
263 char *buf)
264{
265 struct ipath_devdata *dd = dev_get_drvdata(dev);
266
267 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
268}
269
270static ssize_t store_lid(struct device *dev,
271 struct device_attribute *attr,
272 const char *buf,
273 size_t count)
274{
275 struct ipath_devdata *dd = dev_get_drvdata(dev);
276 u16 lid;
277 int ret;
278
279 ret = ipath_parse_ushort(buf, &lid);
280 if (ret < 0)
281 goto invalid;
282
283 if (lid == 0 || lid >= 0xc000) {
284 ret = -EINVAL;
285 goto invalid;
286 }
287
288 ipath_set_sps_lid(dd, lid, 0);
289
290 goto bail;
291invalid:
292 ipath_dev_err(dd, "attempt to set invalid LID\n");
293bail:
294 return ret;
295}
296
297static ssize_t show_mlid(struct device *dev,
298 struct device_attribute *attr,
299 char *buf)
300{
301 struct ipath_devdata *dd = dev_get_drvdata(dev);
302
303 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
304}
305
306static ssize_t store_mlid(struct device *dev,
307 struct device_attribute *attr,
308 const char *buf,
309 size_t count)
310{
311 struct ipath_devdata *dd = dev_get_drvdata(dev);
312 int unit;
313 u16 mlid;
314 int ret;
315
316 ret = ipath_parse_ushort(buf, &mlid);
317 if (ret < 0)
318 goto invalid;
319
320 unit = dd->ipath_unit;
321
322 dd->ipath_mlid = mlid;
323 ipath_stats.sps_mlid[unit] = mlid;
324 ipath_layer_intr(dd, IPATH_LAYER_INT_BCAST);
325
326 goto bail;
327invalid:
328 ipath_dev_err(dd, "attempt to set invalid MLID\n");
329bail:
330 return ret;
331}
332
333static ssize_t show_guid(struct device *dev,
334 struct device_attribute *attr,
335 char *buf)
336{
337 struct ipath_devdata *dd = dev_get_drvdata(dev);
338 u8 *guid;
339
340 guid = (u8 *) & (dd->ipath_guid);
341
342 return scnprintf(buf, PAGE_SIZE,
343 "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
344 guid[0], guid[1], guid[2], guid[3],
345 guid[4], guid[5], guid[6], guid[7]);
346}
347
348static ssize_t store_guid(struct device *dev,
349 struct device_attribute *attr,
350 const char *buf,
351 size_t count)
352{
353 struct ipath_devdata *dd = dev_get_drvdata(dev);
354 ssize_t ret;
355 unsigned short guid[8];
356 __be64 nguid;
357 u8 *ng;
358 int i;
359
360 if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
361 &guid[0], &guid[1], &guid[2], &guid[3],
362 &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
363 goto invalid;
364
365 ng = (u8 *) &nguid;
366
367 for (i = 0; i < 8; i++) {
368 if (guid[i] > 0xff)
369 goto invalid;
370 ng[i] = guid[i];
371 }
372
373 dd->ipath_guid = nguid;
374 dd->ipath_nguid = 1;
375
376 ret = strlen(buf);
377 goto bail;
378
379invalid:
380 ipath_dev_err(dd, "attempt to set invalid GUID\n");
381 ret = -EINVAL;
382
383bail:
384 return ret;
385}
386
387static ssize_t show_nguid(struct device *dev,
388 struct device_attribute *attr,
389 char *buf)
390{
391 struct ipath_devdata *dd = dev_get_drvdata(dev);
392
393 return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
394}
395
396static ssize_t show_serial(struct device *dev,
397 struct device_attribute *attr,
398 char *buf)
399{
400 struct ipath_devdata *dd = dev_get_drvdata(dev);
401
402 buf[sizeof dd->ipath_serial] = '\0';
403 memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
404 strcat(buf, "\n");
405 return strlen(buf);
406}
407
408static ssize_t show_unit(struct device *dev,
409 struct device_attribute *attr,
410 char *buf)
411{
412 struct ipath_devdata *dd = dev_get_drvdata(dev);
413
414 return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
415}
416
417#define DEVICE_COUNTER(name, attr) \
418 static ssize_t show_counter_##name(struct device *dev, \
419 struct device_attribute *attr, \
420 char *buf) \
421 { \
422 struct ipath_devdata *dd = dev_get_drvdata(dev); \
423 return scnprintf(\
424 buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
425 ipath_snap_cntr( \
426 dd, offsetof(struct infinipath_counters, \
427 attr) / sizeof(u64))); \
428 } \
429 static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
430
431DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
432DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
433DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
434DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
435DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
436DEVICE_COUNTER(lb_ints, LBIntCnt);
437DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
438DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
439DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
440DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
441DEVICE_COUNTER(rx_dwords, RxDwordCnt);
442DEVICE_COUNTER(rx_ebps, RxEBPCnt);
443DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
444DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
445DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
446DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
447DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
448DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
449DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
450DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
451DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
452DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
453DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
454DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
455DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
456DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
457DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
458DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
459DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
460DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
461DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
462DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
463DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
464DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
465DEVICE_COUNTER(tx_dwords, TxDwordCnt);
466DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
467DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
468DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
469DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
470DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
471DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
472
473static struct attribute *dev_counter_attributes[] = {
474 &dev_attr_ib_link_downeds.attr,
475 &dev_attr_ib_link_err_recoveries.attr,
476 &dev_attr_ib_status_changes.attr,
477 &dev_attr_ib_symbol_errs.attr,
478 &dev_attr_lb_flow_stalls.attr,
479 &dev_attr_lb_ints.attr,
480 &dev_attr_rx_bad_formats.attr,
481 &dev_attr_rx_buf_ovfls.attr,
482 &dev_attr_rx_data_pkts.attr,
483 &dev_attr_rx_dropped_pkts.attr,
484 &dev_attr_rx_dwords.attr,
485 &dev_attr_rx_ebps.attr,
486 &dev_attr_rx_flow_ctrl_errs.attr,
487 &dev_attr_rx_flow_pkts.attr,
488 &dev_attr_rx_icrc_errs.attr,
489 &dev_attr_rx_len_errs.attr,
490 &dev_attr_rx_link_problems.attr,
491 &dev_attr_rx_lpcrc_errs.attr,
492 &dev_attr_rx_max_min_len_errs.attr,
493 &dev_attr_rx_p0_hdr_egr_ovfls.attr,
494 &dev_attr_rx_p1_hdr_egr_ovfls.attr,
495 &dev_attr_rx_p2_hdr_egr_ovfls.attr,
496 &dev_attr_rx_p3_hdr_egr_ovfls.attr,
497 &dev_attr_rx_p4_hdr_egr_ovfls.attr,
498 &dev_attr_rx_p5_hdr_egr_ovfls.attr,
499 &dev_attr_rx_p6_hdr_egr_ovfls.attr,
500 &dev_attr_rx_p7_hdr_egr_ovfls.attr,
501 &dev_attr_rx_p8_hdr_egr_ovfls.attr,
502 &dev_attr_rx_pkey_mismatches.attr,
503 &dev_attr_rx_tid_full_errs.attr,
504 &dev_attr_rx_tid_valid_errs.attr,
505 &dev_attr_rx_vcrc_errs.attr,
506 &dev_attr_tx_data_pkts.attr,
507 &dev_attr_tx_dropped_pkts.attr,
508 &dev_attr_tx_dwords.attr,
509 &dev_attr_tx_flow_pkts.attr,
510 &dev_attr_tx_flow_stalls.attr,
511 &dev_attr_tx_len_errs.attr,
512 &dev_attr_tx_max_min_len_errs.attr,
513 &dev_attr_tx_underruns.attr,
514 &dev_attr_tx_unsup_vl_errs.attr,
515 NULL
516};
517
518static struct attribute_group dev_counter_attr_group = {
519 .name = "counters",
520 .attrs = dev_counter_attributes
521};
522
523static ssize_t store_reset(struct device *dev,
524 struct device_attribute *attr,
525 const char *buf,
526 size_t count)
527{
528 struct ipath_devdata *dd = dev_get_drvdata(dev);
529 int ret;
530
531 if (count < 5 || memcmp(buf, "reset", 5)) {
532 ret = -EINVAL;
533 goto bail;
534 }
535
536 if (dd->ipath_flags & IPATH_DISABLED) {
537 /*
538 * post-reset init would re-enable interrupts, etc.
539 * so don't allow reset on disabled devices. Not
540 * perfect error, but about the best choice.
541 */
542 dev_info(dev,"Unit %d is disabled, can't reset\n",
543 dd->ipath_unit);
544 ret = -EINVAL;
545 }
546 ret = ipath_reset_device(dd->ipath_unit);
547bail:
548 return ret<0 ? ret : count;
549}
550
551static ssize_t store_link_state(struct device *dev,
552 struct device_attribute *attr,
553 const char *buf,
554 size_t count)
555{
556 struct ipath_devdata *dd = dev_get_drvdata(dev);
557 int ret, r;
558 u16 state;
559
560 ret = ipath_parse_ushort(buf, &state);
561 if (ret < 0)
562 goto invalid;
563
564 r = ipath_layer_set_linkstate(dd, state);
565 if (r < 0) {
566 ret = r;
567 goto bail;
568 }
569
570 goto bail;
571invalid:
572 ipath_dev_err(dd, "attempt to set invalid link state\n");
573bail:
574 return ret;
575}
576
577static ssize_t show_mtu(struct device *dev,
578 struct device_attribute *attr,
579 char *buf)
580{
581 struct ipath_devdata *dd = dev_get_drvdata(dev);
582 return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
583}
584
585static ssize_t store_mtu(struct device *dev,
586 struct device_attribute *attr,
587 const char *buf,
588 size_t count)
589{
590 struct ipath_devdata *dd = dev_get_drvdata(dev);
591 ssize_t ret;
592 u16 mtu = 0;
593 int r;
594
595 ret = ipath_parse_ushort(buf, &mtu);
596 if (ret < 0)
597 goto invalid;
598
599 r = ipath_layer_set_mtu(dd, mtu);
600 if (r < 0)
601 ret = r;
602
603 goto bail;
604invalid:
605 ipath_dev_err(dd, "attempt to set invalid MTU\n");
606bail:
607 return ret;
608}
609
610static ssize_t show_enabled(struct device *dev,
611 struct device_attribute *attr,
612 char *buf)
613{
614 struct ipath_devdata *dd = dev_get_drvdata(dev);
615 return scnprintf(buf, PAGE_SIZE, "%u\n",
616 (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
617}
618
619static ssize_t store_enabled(struct device *dev,
620 struct device_attribute *attr,
621 const char *buf,
622 size_t count)
623{
624 struct ipath_devdata *dd = dev_get_drvdata(dev);
625 ssize_t ret;
626 u16 enable = 0;
627
628 ret = ipath_parse_ushort(buf, &enable);
629 if (ret < 0) {
630 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
631 goto bail;
632 }
633
634 if (enable) {
635 if (!(dd->ipath_flags & IPATH_DISABLED))
636 goto bail;
637
638 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
639 /* same as post-reset */
640 ret = ipath_init_chip(dd, 1);
641 if (ret)
642 ipath_dev_err(dd, "Failed to enable unit %d\n",
643 dd->ipath_unit);
644 else {
645 dd->ipath_flags &= ~IPATH_DISABLED;
646 *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
647 }
648 }
649 else if (!(dd->ipath_flags & IPATH_DISABLED)) {
650 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
651 ipath_shutdown_device(dd);
652 dd->ipath_flags |= IPATH_DISABLED;
653 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
654 }
655
656bail:
657 return ret;
658}
659
660static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
661static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
662
663static struct attribute *driver_attributes[] = {
664 &driver_attr_num_units.attr,
665 &driver_attr_version.attr,
666 NULL
667};
668
669static struct attribute_group driver_attr_group = {
670 .attrs = driver_attributes
671};
672
673static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
674static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
675static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
676static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
677static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
678static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
679static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
680static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
681static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
682static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
683static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
684static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
685static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
686
687static struct attribute *dev_attributes[] = {
688 &dev_attr_guid.attr,
689 &dev_attr_lid.attr,
690 &dev_attr_link_state.attr,
691 &dev_attr_mlid.attr,
692 &dev_attr_mtu.attr,
693 &dev_attr_nguid.attr,
694 &dev_attr_serial.attr,
695 &dev_attr_status.attr,
696 &dev_attr_status_str.attr,
697 &dev_attr_boardversion.attr,
698 &dev_attr_unit.attr,
699 &dev_attr_enabled.attr,
700 NULL
701};
702
703static struct attribute_group dev_attr_group = {
704 .attrs = dev_attributes
705};
706
707/**
708 * ipath_expose_reset - create a device reset file
709 * @dev: the device structure
710 *
711 * Only expose a file that lets us reset the device after someone
712 * enters diag mode. A device reset is quite likely to crash the
713 * machine entirely, so we don't want to normally make it
714 * available.
755e4ca4
BS		 715 *
716 * Called with ipath_mutex held.
3e9b4a5e
BS		 717 */
718int ipath_expose_reset(struct device *dev)
719{
755e4ca4
BS		 720 static int exposed;
721 int ret;
722
723 if (!exposed) {
724 ret = device_create_file(dev, &dev_attr_reset);
725 exposed = 1;
726 }
727 else
728 ret = 0;
729
730 return ret;
3e9b4a5e
BS		 731}
732
733int ipath_driver_create_group(struct device_driver *drv)
734{
735 int ret;
736
737 ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
738 if (ret)
739 goto bail;
740
741 ret = sysfs_create_group(&drv->kobj, &driver_stat_attr_group);
742 if (ret)
743 sysfs_remove_group(&drv->kobj, &driver_attr_group);
744
745bail:
746 return ret;
747}
748
749void ipath_driver_remove_group(struct device_driver *drv)
750{
751 sysfs_remove_group(&drv->kobj, &driver_stat_attr_group);
752 sysfs_remove_group(&drv->kobj, &driver_attr_group);
753}
754
755int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
756{
757 int ret;
758 char unit[5];
759
760 ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
761 if (ret)
762 goto bail;
763
764 ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
765 if (ret)
766 goto bail_attrs;
767
768 snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
769 ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
770 if (ret == 0)
771 goto bail;
772
773 sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
774bail_attrs:
775 sysfs_remove_group(&dev->kobj, &dev_attr_group);
776bail:
777 return ret;
778}
779
780void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
781{
782 char unit[5];
783
784 snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
785 sysfs_remove_link(&dev->driver->kobj, unit);
786
787 sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
788 sysfs_remove_group(&dev->kobj, &dev_attr_group);
789
790 device_remove_file(dev, &dev_attr_reset);
791}
Linux 6.x block layer and io_uring tree(s)