drivers/infiniband/hw/ipath/ipath_sysfs.c

   1 /*
   2  * Copyright (c) 2006 QLogic, Inc. 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 #include <linux/pci.h>
  36
  37 #include "ipath_kernel.h"
  38 #include "ipath_layer.h"
  39 #include "ipath_common.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  */
  48 int 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
  72 bail:
  73         return ret;
  74 }
  75
  76 static 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
  82 static 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 static ssize_t show_status(struct device *dev,
  89                            struct device_attribute *attr,
  90                            char *buf)
  91 {
  92         struct ipath_devdata *dd = dev_get_drvdata(dev);
  93         ssize_t ret;
  94
  95         if (!dd->ipath_statusp) {
  96                 ret = -EINVAL;
  97                 goto bail;
  98         }
  99
 100         ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
 101                         (unsigned long long) *(dd->ipath_statusp));
 102
 103 bail:
 104         return ret;
 105 }
 106
 107 static const char *ipath_status_str[] = {
 108         "Initted",
 109         "Disabled",
 110         "Admin_Disabled",
 111         "OIB_SMA",
 112         "SMA",
 113         "Present",
 114         "IB_link_up",
 115         "IB_configured",
 116         "NoIBcable",
 117         "Fatal_Hardware_Error",
 118         NULL,
 119 };
 120
 121 static ssize_t show_status_str(struct device *dev,
 122                                struct device_attribute *attr,
 123                                char *buf)
 124 {
 125         struct ipath_devdata *dd = dev_get_drvdata(dev);
 126         int i, any;
 127         u64 s;
 128         ssize_t ret;
 129
 130         if (!dd->ipath_statusp) {
 131                 ret = -EINVAL;
 132                 goto bail;
 133         }
 134
 135         s = *(dd->ipath_statusp);
 136         *buf = '\0';
 137         for (any = i = 0; s && ipath_status_str[i]; i++) {
 138                 if (s & 1) {
 139                         if (any && strlcat(buf, " ", PAGE_SIZE) >=
 140                             PAGE_SIZE)
 141                                 /* overflow */
 142                                 break;
 143                         if (strlcat(buf, ipath_status_str[i],
 144                                     PAGE_SIZE) >= PAGE_SIZE)
 145                                 break;
 146                         any = 1;
 147                 }
 148                 s >>= 1;
 149         }
 150         if (any)
 151                 strlcat(buf, "\n", PAGE_SIZE);
 152
 153         ret = strlen(buf);
 154
 155 bail:
 156         return ret;
 157 }
 158
 159 static ssize_t show_boardversion(struct device *dev,
 160                                struct device_attribute *attr,
 161                                char *buf)
 162 {
 163         struct ipath_devdata *dd = dev_get_drvdata(dev);
 164         /* The string printed here is already newline-terminated. */
 165         return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
 166 }
 167
 168 static ssize_t show_lid(struct device *dev,
 169                         struct device_attribute *attr,
 170                         char *buf)
 171 {
 172         struct ipath_devdata *dd = dev_get_drvdata(dev);
 173
 174         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
 175 }
 176
 177 static ssize_t store_lid(struct device *dev,
 178                          struct device_attribute *attr,
 179                           const char *buf,
 180                           size_t count)
 181 {
 182         struct ipath_devdata *dd = dev_get_drvdata(dev);
 183         u16 lid = 0;
 184         int ret;
 185
 186         ret = ipath_parse_ushort(buf, &lid);
 187         if (ret < 0)
 188                 goto invalid;
 189
 190         if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
 191                 ret = -EINVAL;
 192                 goto invalid;
 193         }
 194
 195         ipath_set_lid(dd, lid, 0);
 196
 197         goto bail;
 198 invalid:
 199         ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
 200 bail:
 201         return ret;
 202 }
 203
 204 static ssize_t show_mlid(struct device *dev,
 205                          struct device_attribute *attr,
 206                          char *buf)
 207 {
 208         struct ipath_devdata *dd = dev_get_drvdata(dev);
 209
 210         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
 211 }
 212
 213 static ssize_t store_mlid(struct device *dev,
 214                          struct device_attribute *attr,
 215                           const char *buf,
 216                           size_t count)
 217 {
 218         struct ipath_devdata *dd = dev_get_drvdata(dev);
 219         int unit;
 220         u16 mlid;
 221         int ret;
 222
 223         ret = ipath_parse_ushort(buf, &mlid);
 224         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
 225                 goto invalid;
 226
 227         unit = dd->ipath_unit;
 228
 229         dd->ipath_mlid = mlid;
 230         ipath_layer_intr(dd, IPATH_LAYER_INT_BCAST);
 231
 232         goto bail;
 233 invalid:
 234         ipath_dev_err(dd, "attempt to set invalid MLID\n");
 235 bail:
 236         return ret;
 237 }
 238
 239 static ssize_t show_guid(struct device *dev,
 240                          struct device_attribute *attr,
 241                          char *buf)
 242 {
 243         struct ipath_devdata *dd = dev_get_drvdata(dev);
 244         u8 *guid;
 245
 246         guid = (u8 *) & (dd->ipath_guid);
 247
 248         return scnprintf(buf, PAGE_SIZE,
 249                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 250                          guid[0], guid[1], guid[2], guid[3],
 251                          guid[4], guid[5], guid[6], guid[7]);
 252 }
 253
 254 static ssize_t store_guid(struct device *dev,
 255                          struct device_attribute *attr,
 256                           const char *buf,
 257                           size_t count)
 258 {
 259         struct ipath_devdata *dd = dev_get_drvdata(dev);
 260         ssize_t ret;
 261         unsigned short guid[8];
 262         __be64 nguid;
 263         u8 *ng;
 264         int i;
 265
 266         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 267                    &guid[0], &guid[1], &guid[2], &guid[3],
 268                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
 269                 goto invalid;
 270
 271         ng = (u8 *) &nguid;
 272
 273         for (i = 0; i < 8; i++) {
 274                 if (guid[i] > 0xff)
 275                         goto invalid;
 276                 ng[i] = guid[i];
 277         }
 278
 279         dd->ipath_guid = nguid;
 280         dd->ipath_nguid = 1;
 281
 282         ret = strlen(buf);
 283         goto bail;
 284
 285 invalid:
 286         ipath_dev_err(dd, "attempt to set invalid GUID\n");
 287         ret = -EINVAL;
 288
 289 bail:
 290         return ret;
 291 }
 292
 293 static ssize_t show_nguid(struct device *dev,
 294                           struct device_attribute *attr,
 295                           char *buf)
 296 {
 297         struct ipath_devdata *dd = dev_get_drvdata(dev);
 298
 299         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
 300 }
 301
 302 static ssize_t show_serial(struct device *dev,
 303                            struct device_attribute *attr,
 304                            char *buf)
 305 {
 306         struct ipath_devdata *dd = dev_get_drvdata(dev);
 307
 308         buf[sizeof dd->ipath_serial] = '\0';
 309         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
 310         strcat(buf, "\n");
 311         return strlen(buf);
 312 }
 313
 314 static ssize_t show_unit(struct device *dev,
 315                          struct device_attribute *attr,
 316                          char *buf)
 317 {
 318         struct ipath_devdata *dd = dev_get_drvdata(dev);
 319
 320         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
 321 }
 322
 323 #define DEVICE_COUNTER(name, attr) \
 324         static ssize_t show_counter_##name(struct device *dev, \
 325                                            struct device_attribute *attr, \
 326                                            char *buf) \
 327         { \
 328                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
 329                 return scnprintf(\
 330                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
 331                         ipath_snap_cntr( \
 332                                 dd, offsetof(struct infinipath_counters, \
 333                                              attr) / sizeof(u64)));     \
 334         } \
 335         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
 336
 337 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
 338 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
 339 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
 340 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
 341 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
 342 DEVICE_COUNTER(lb_ints, LBIntCnt);
 343 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
 344 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
 345 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
 346 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
 347 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
 348 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
 349 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
 350 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
 351 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
 352 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
 353 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
 354 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
 355 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
 356 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
 357 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
 358 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
 359 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
 360 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
 361 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
 362 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
 363 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
 364 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
 365 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
 366 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
 367 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
 368 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
 369 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
 370 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
 371 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
 372 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
 373 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
 374 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
 375 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
 376 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
 377 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
 378
 379 static struct attribute *dev_counter_attributes[] = {
 380         &dev_attr_ib_link_downeds.attr,
 381         &dev_attr_ib_link_err_recoveries.attr,
 382         &dev_attr_ib_status_changes.attr,
 383         &dev_attr_ib_symbol_errs.attr,
 384         &dev_attr_lb_flow_stalls.attr,
 385         &dev_attr_lb_ints.attr,
 386         &dev_attr_rx_bad_formats.attr,
 387         &dev_attr_rx_buf_ovfls.attr,
 388         &dev_attr_rx_data_pkts.attr,
 389         &dev_attr_rx_dropped_pkts.attr,
 390         &dev_attr_rx_dwords.attr,
 391         &dev_attr_rx_ebps.attr,
 392         &dev_attr_rx_flow_ctrl_errs.attr,
 393         &dev_attr_rx_flow_pkts.attr,
 394         &dev_attr_rx_icrc_errs.attr,
 395         &dev_attr_rx_len_errs.attr,
 396         &dev_attr_rx_link_problems.attr,
 397         &dev_attr_rx_lpcrc_errs.attr,
 398         &dev_attr_rx_max_min_len_errs.attr,
 399         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
 400         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
 401         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
 402         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
 403         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
 404         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
 405         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
 406         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
 407         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
 408         &dev_attr_rx_pkey_mismatches.attr,
 409         &dev_attr_rx_tid_full_errs.attr,
 410         &dev_attr_rx_tid_valid_errs.attr,
 411         &dev_attr_rx_vcrc_errs.attr,
 412         &dev_attr_tx_data_pkts.attr,
 413         &dev_attr_tx_dropped_pkts.attr,
 414         &dev_attr_tx_dwords.attr,
 415         &dev_attr_tx_flow_pkts.attr,
 416         &dev_attr_tx_flow_stalls.attr,
 417         &dev_attr_tx_len_errs.attr,
 418         &dev_attr_tx_max_min_len_errs.attr,
 419         &dev_attr_tx_underruns.attr,
 420         &dev_attr_tx_unsup_vl_errs.attr,
 421         NULL
 422 };
 423
 424 static struct attribute_group dev_counter_attr_group = {
 425         .name = "counters",
 426         .attrs = dev_counter_attributes
 427 };
 428
 429 static ssize_t store_reset(struct device *dev,
 430                          struct device_attribute *attr,
 431                           const char *buf,
 432                           size_t count)
 433 {
 434         struct ipath_devdata *dd = dev_get_drvdata(dev);
 435         int ret;
 436
 437         if (count < 5 || memcmp(buf, "reset", 5)) {
 438                 ret = -EINVAL;
 439                 goto bail;
 440         }
 441
 442         if (dd->ipath_flags & IPATH_DISABLED) {
 443                 /*
 444                  * post-reset init would re-enable interrupts, etc.
 445                  * so don't allow reset on disabled devices.  Not
 446                  * perfect error, but about the best choice.
 447                  */
 448                 dev_info(dev,"Unit %d is disabled, can't reset\n",
 449                          dd->ipath_unit);
 450                 ret = -EINVAL;
 451         }
 452         ret = ipath_reset_device(dd->ipath_unit);
 453 bail:
 454         return ret<0 ? ret : count;
 455 }
 456
 457 static ssize_t store_link_state(struct device *dev,
 458                          struct device_attribute *attr,
 459                           const char *buf,
 460                           size_t count)
 461 {
 462         struct ipath_devdata *dd = dev_get_drvdata(dev);
 463         int ret, r;
 464         u16 state;
 465
 466         ret = ipath_parse_ushort(buf, &state);
 467         if (ret < 0)
 468                 goto invalid;
 469
 470         r = ipath_layer_set_linkstate(dd, state);
 471         if (r < 0) {
 472                 ret = r;
 473                 goto bail;
 474         }
 475
 476         goto bail;
 477 invalid:
 478         ipath_dev_err(dd, "attempt to set invalid link state\n");
 479 bail:
 480         return ret;
 481 }
 482
 483 static ssize_t show_mtu(struct device *dev,
 484                          struct device_attribute *attr,
 485                          char *buf)
 486 {
 487         struct ipath_devdata *dd = dev_get_drvdata(dev);
 488         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
 489 }
 490
 491 static ssize_t store_mtu(struct device *dev,
 492                          struct device_attribute *attr,
 493                           const char *buf,
 494                           size_t count)
 495 {
 496         struct ipath_devdata *dd = dev_get_drvdata(dev);
 497         ssize_t ret;
 498         u16 mtu = 0;
 499         int r;
 500
 501         ret = ipath_parse_ushort(buf, &mtu);
 502         if (ret < 0)
 503                 goto invalid;
 504
 505         r = ipath_layer_set_mtu(dd, mtu);
 506         if (r < 0)
 507                 ret = r;
 508
 509         goto bail;
 510 invalid:
 511         ipath_dev_err(dd, "attempt to set invalid MTU\n");
 512 bail:
 513         return ret;
 514 }
 515
 516 static ssize_t show_enabled(struct device *dev,
 517                          struct device_attribute *attr,
 518                          char *buf)
 519 {
 520         struct ipath_devdata *dd = dev_get_drvdata(dev);
 521         return scnprintf(buf, PAGE_SIZE, "%u\n",
 522                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
 523 }
 524
 525 static ssize_t store_enabled(struct device *dev,
 526                          struct device_attribute *attr,
 527                           const char *buf,
 528                           size_t count)
 529 {
 530         struct ipath_devdata *dd = dev_get_drvdata(dev);
 531         ssize_t ret;
 532         u16 enable = 0;
 533
 534         ret = ipath_parse_ushort(buf, &enable);
 535         if (ret < 0) {
 536                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
 537                 goto bail;
 538         }
 539
 540         if (enable) {
 541                 if (!(dd->ipath_flags & IPATH_DISABLED))
 542                         goto bail;
 543
 544                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
 545                 /* same as post-reset */
 546                 ret = ipath_init_chip(dd, 1);
 547                 if (ret)
 548                         ipath_dev_err(dd, "Failed to enable unit %d\n",
 549                                       dd->ipath_unit);
 550                 else {
 551                         dd->ipath_flags &= ~IPATH_DISABLED;
 552                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
 553                 }
 554         }
 555         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
 556                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
 557                 ipath_shutdown_device(dd);
 558                 dd->ipath_flags |= IPATH_DISABLED;
 559                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
 560         }
 561
 562 bail:
 563         return ret;
 564 }
 565
 566 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 567 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 568
 569 static struct attribute *driver_attributes[] = {
 570         &driver_attr_num_units.attr,
 571         &driver_attr_version.attr,
 572         NULL
 573 };
 574
 575 static struct attribute_group driver_attr_group = {
 576         .attrs = driver_attributes
 577 };
 578
 579 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
 580 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
 581 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
 582 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
 583 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
 584 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
 585 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
 586 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
 587 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 588 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
 589 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 590 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 591 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
 592
 593 static struct attribute *dev_attributes[] = {
 594         &dev_attr_guid.attr,
 595         &dev_attr_lid.attr,
 596         &dev_attr_link_state.attr,
 597         &dev_attr_mlid.attr,
 598         &dev_attr_mtu.attr,
 599         &dev_attr_nguid.attr,
 600         &dev_attr_serial.attr,
 601         &dev_attr_status.attr,
 602         &dev_attr_status_str.attr,
 603         &dev_attr_boardversion.attr,
 604         &dev_attr_unit.attr,
 605         &dev_attr_enabled.attr,
 606         NULL
 607 };
 608
 609 static struct attribute_group dev_attr_group = {
 610         .attrs = dev_attributes
 611 };
 612
 613 /**
 614  * ipath_expose_reset - create a device reset file
 615  * @dev: the device structure
 616  *
 617  * Only expose a file that lets us reset the device after someone
 618  * enters diag mode.  A device reset is quite likely to crash the
 619  * machine entirely, so we don't want to normally make it
 620  * available.
 621  *
 622  * Called with ipath_mutex held.
 623  */
 624 int ipath_expose_reset(struct device *dev)
 625 {
 626         static int exposed;
 627         int ret;
 628
 629         if (!exposed) {
 630                 ret = device_create_file(dev, &dev_attr_reset);
 631                 exposed = 1;
 632         }
 633         else
 634                 ret = 0;
 635
 636         return ret;
 637 }
 638
 639 int ipath_driver_create_group(struct device_driver *drv)
 640 {
 641         int ret;
 642
 643         ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
 644
 645         return ret;
 646 }
 647
 648 void ipath_driver_remove_group(struct device_driver *drv)
 649 {
 650         sysfs_remove_group(&drv->kobj, &driver_attr_group);
 651 }
 652
 653 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
 654 {
 655         int ret;
 656         char unit[5];
 657
 658         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
 659         if (ret)
 660                 goto bail;
 661
 662         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
 663         if (ret)
 664                 goto bail_attrs;
 665
 666         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 667         ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
 668         if (ret == 0)
 669                 goto bail;
 670
 671         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 672 bail_attrs:
 673         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 674 bail:
 675         return ret;
 676 }
 677
 678 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
 679 {
 680         char unit[5];
 681
 682         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 683         sysfs_remove_link(&dev->driver->kobj, unit);
 684
 685         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 686         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 687
 688         device_remove_file(dev, &dev_attr_reset);
 689 }