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