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         u16 mlid;
 219         int ret;
 220
 221         ret = ipath_parse_ushort(buf, &mlid);
 222         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
 223                 goto invalid;
 224
 225         dd->ipath_mlid = mlid;
 226
 227         goto bail;
 228 invalid:
 229         ipath_dev_err(dd, "attempt to set invalid MLID\n");
 230 bail:
 231         return ret;
 232 }
 233
 234 static ssize_t show_guid(struct device *dev,
 235                          struct device_attribute *attr,
 236                          char *buf)
 237 {
 238         struct ipath_devdata *dd = dev_get_drvdata(dev);
 239         u8 *guid;
 240
 241         guid = (u8 *) & (dd->ipath_guid);
 242
 243         return scnprintf(buf, PAGE_SIZE,
 244                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 245                          guid[0], guid[1], guid[2], guid[3],
 246                          guid[4], guid[5], guid[6], guid[7]);
 247 }
 248
 249 static ssize_t store_guid(struct device *dev,
 250                          struct device_attribute *attr,
 251                           const char *buf,
 252                           size_t count)
 253 {
 254         struct ipath_devdata *dd = dev_get_drvdata(dev);
 255         ssize_t ret;
 256         unsigned short guid[8];
 257         __be64 new_guid;
 258         u8 *ng;
 259         int i;
 260
 261         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 262                    &guid[0], &guid[1], &guid[2], &guid[3],
 263                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
 264                 goto invalid;
 265
 266         ng = (u8 *) &new_guid;
 267
 268         for (i = 0; i < 8; i++) {
 269                 if (guid[i] > 0xff)
 270                         goto invalid;
 271                 ng[i] = guid[i];
 272         }
 273
 274         if (new_guid == 0)
 275                 goto invalid;
 276
 277         dd->ipath_guid = new_guid;
 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_nports(struct device *dev,
 301                            struct device_attribute *attr,
 302                            char *buf)
 303 {
 304         struct ipath_devdata *dd = dev_get_drvdata(dev);
 305
 306         /* Return the number of user ports available. */
 307         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
 308 }
 309
 310 static ssize_t show_serial(struct device *dev,
 311                            struct device_attribute *attr,
 312                            char *buf)
 313 {
 314         struct ipath_devdata *dd = dev_get_drvdata(dev);
 315
 316         buf[sizeof dd->ipath_serial] = '\0';
 317         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
 318         strcat(buf, "\n");
 319         return strlen(buf);
 320 }
 321
 322 static ssize_t show_unit(struct device *dev,
 323                          struct device_attribute *attr,
 324                          char *buf)
 325 {
 326         struct ipath_devdata *dd = dev_get_drvdata(dev);
 327
 328         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
 329 }
 330
 331 #define DEVICE_COUNTER(name, attr) \
 332         static ssize_t show_counter_##name(struct device *dev, \
 333                                            struct device_attribute *attr, \
 334                                            char *buf) \
 335         { \
 336                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
 337                 return scnprintf(\
 338                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
 339                         ipath_snap_cntr( \
 340                                 dd, offsetof(struct infinipath_counters, \
 341                                              attr) / sizeof(u64)));     \
 342         } \
 343         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
 344
 345 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
 346 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
 347 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
 348 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
 349 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
 350 DEVICE_COUNTER(lb_ints, LBIntCnt);
 351 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
 352 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
 353 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
 354 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
 355 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
 356 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
 357 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
 358 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
 359 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
 360 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
 361 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
 362 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
 363 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
 364 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
 365 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
 366 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
 367 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
 368 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
 369 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
 370 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
 371 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
 372 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
 373 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
 374 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
 375 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
 376 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
 377 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
 378 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
 379 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
 380 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
 381 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
 382 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
 383 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
 384 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
 385 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
 386
 387 static struct attribute *dev_counter_attributes[] = {
 388         &dev_attr_ib_link_downeds.attr,
 389         &dev_attr_ib_link_err_recoveries.attr,
 390         &dev_attr_ib_status_changes.attr,
 391         &dev_attr_ib_symbol_errs.attr,
 392         &dev_attr_lb_flow_stalls.attr,
 393         &dev_attr_lb_ints.attr,
 394         &dev_attr_rx_bad_formats.attr,
 395         &dev_attr_rx_buf_ovfls.attr,
 396         &dev_attr_rx_data_pkts.attr,
 397         &dev_attr_rx_dropped_pkts.attr,
 398         &dev_attr_rx_dwords.attr,
 399         &dev_attr_rx_ebps.attr,
 400         &dev_attr_rx_flow_ctrl_errs.attr,
 401         &dev_attr_rx_flow_pkts.attr,
 402         &dev_attr_rx_icrc_errs.attr,
 403         &dev_attr_rx_len_errs.attr,
 404         &dev_attr_rx_link_problems.attr,
 405         &dev_attr_rx_lpcrc_errs.attr,
 406         &dev_attr_rx_max_min_len_errs.attr,
 407         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
 408         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
 409         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
 410         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
 411         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
 412         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
 413         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
 414         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
 415         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
 416         &dev_attr_rx_pkey_mismatches.attr,
 417         &dev_attr_rx_tid_full_errs.attr,
 418         &dev_attr_rx_tid_valid_errs.attr,
 419         &dev_attr_rx_vcrc_errs.attr,
 420         &dev_attr_tx_data_pkts.attr,
 421         &dev_attr_tx_dropped_pkts.attr,
 422         &dev_attr_tx_dwords.attr,
 423         &dev_attr_tx_flow_pkts.attr,
 424         &dev_attr_tx_flow_stalls.attr,
 425         &dev_attr_tx_len_errs.attr,
 426         &dev_attr_tx_max_min_len_errs.attr,
 427         &dev_attr_tx_underruns.attr,
 428         &dev_attr_tx_unsup_vl_errs.attr,
 429         NULL
 430 };
 431
 432 static struct attribute_group dev_counter_attr_group = {
 433         .name = "counters",
 434         .attrs = dev_counter_attributes
 435 };
 436
 437 static ssize_t store_reset(struct device *dev,
 438                          struct device_attribute *attr,
 439                           const char *buf,
 440                           size_t count)
 441 {
 442         struct ipath_devdata *dd = dev_get_drvdata(dev);
 443         int ret;
 444
 445         if (count < 5 || memcmp(buf, "reset", 5)) {
 446                 ret = -EINVAL;
 447                 goto bail;
 448         }
 449
 450         if (dd->ipath_flags & IPATH_DISABLED) {
 451                 /*
 452                  * post-reset init would re-enable interrupts, etc.
 453                  * so don't allow reset on disabled devices.  Not
 454                  * perfect error, but about the best choice.
 455                  */
 456                 dev_info(dev,"Unit %d is disabled, can't reset\n",
 457                          dd->ipath_unit);
 458                 ret = -EINVAL;
 459         }
 460         ret = ipath_reset_device(dd->ipath_unit);
 461 bail:
 462         return ret<0 ? ret : count;
 463 }
 464
 465 static ssize_t store_link_state(struct device *dev,
 466                          struct device_attribute *attr,
 467                           const char *buf,
 468                           size_t count)
 469 {
 470         struct ipath_devdata *dd = dev_get_drvdata(dev);
 471         int ret, r;
 472         u16 state;
 473
 474         ret = ipath_parse_ushort(buf, &state);
 475         if (ret < 0)
 476                 goto invalid;
 477
 478         r = ipath_set_linkstate(dd, state);
 479         if (r < 0) {
 480                 ret = r;
 481                 goto bail;
 482         }
 483
 484         goto bail;
 485 invalid:
 486         ipath_dev_err(dd, "attempt to set invalid link state\n");
 487 bail:
 488         return ret;
 489 }
 490
 491 static ssize_t show_mtu(struct device *dev,
 492                          struct device_attribute *attr,
 493                          char *buf)
 494 {
 495         struct ipath_devdata *dd = dev_get_drvdata(dev);
 496         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
 497 }
 498
 499 static ssize_t store_mtu(struct device *dev,
 500                          struct device_attribute *attr,
 501                           const char *buf,
 502                           size_t count)
 503 {
 504         struct ipath_devdata *dd = dev_get_drvdata(dev);
 505         ssize_t ret;
 506         u16 mtu = 0;
 507         int r;
 508
 509         ret = ipath_parse_ushort(buf, &mtu);
 510         if (ret < 0)
 511                 goto invalid;
 512
 513         r = ipath_set_mtu(dd, mtu);
 514         if (r < 0)
 515                 ret = r;
 516
 517         goto bail;
 518 invalid:
 519         ipath_dev_err(dd, "attempt to set invalid MTU\n");
 520 bail:
 521         return ret;
 522 }
 523
 524 static ssize_t show_enabled(struct device *dev,
 525                          struct device_attribute *attr,
 526                          char *buf)
 527 {
 528         struct ipath_devdata *dd = dev_get_drvdata(dev);
 529         return scnprintf(buf, PAGE_SIZE, "%u\n",
 530                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
 531 }
 532
 533 static ssize_t store_enabled(struct device *dev,
 534                          struct device_attribute *attr,
 535                           const char *buf,
 536                           size_t count)
 537 {
 538         struct ipath_devdata *dd = dev_get_drvdata(dev);
 539         ssize_t ret;
 540         u16 enable = 0;
 541
 542         ret = ipath_parse_ushort(buf, &enable);
 543         if (ret < 0) {
 544                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
 545                 goto bail;
 546         }
 547
 548         if (enable) {
 549                 if (!(dd->ipath_flags & IPATH_DISABLED))
 550                         goto bail;
 551
 552                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
 553                 /* same as post-reset */
 554                 ret = ipath_init_chip(dd, 1);
 555                 if (ret)
 556                         ipath_dev_err(dd, "Failed to enable unit %d\n",
 557                                       dd->ipath_unit);
 558                 else {
 559                         dd->ipath_flags &= ~IPATH_DISABLED;
 560                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
 561                 }
 562         }
 563         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
 564                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
 565                 ipath_shutdown_device(dd);
 566                 dd->ipath_flags |= IPATH_DISABLED;
 567                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
 568         }
 569
 570 bail:
 571         return ret;
 572 }
 573
 574 static ssize_t store_rx_pol_inv(struct device *dev,
 575                           struct device_attribute *attr,
 576                           const char *buf,
 577                           size_t count)
 578 {
 579         struct ipath_devdata *dd = dev_get_drvdata(dev);
 580         int ret, r;
 581         u16 val;
 582
 583         ret = ipath_parse_ushort(buf, &val);
 584         if (ret < 0)
 585                 goto invalid;
 586
 587         r = ipath_set_rx_pol_inv(dd, val);
 588         if (r < 0) {
 589                 ret = r;
 590                 goto bail;
 591         }
 592
 593         goto bail;
 594 invalid:
 595         ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
 596 bail:
 597         return ret;
 598 }
 599
 600
 601 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 602 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 603
 604 static struct attribute *driver_attributes[] = {
 605         &driver_attr_num_units.attr,
 606         &driver_attr_version.attr,
 607         NULL
 608 };
 609
 610 static struct attribute_group driver_attr_group = {
 611         .attrs = driver_attributes
 612 };
 613
 614 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
 615 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
 616 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
 617 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
 618 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
 619 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
 620 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
 621 static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
 622 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
 623 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 624 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
 625 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 626 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 627 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
 628 static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
 629
 630 static struct attribute *dev_attributes[] = {
 631         &dev_attr_guid.attr,
 632         &dev_attr_lid.attr,
 633         &dev_attr_link_state.attr,
 634         &dev_attr_mlid.attr,
 635         &dev_attr_mtu.attr,
 636         &dev_attr_nguid.attr,
 637         &dev_attr_nports.attr,
 638         &dev_attr_serial.attr,
 639         &dev_attr_status.attr,
 640         &dev_attr_status_str.attr,
 641         &dev_attr_boardversion.attr,
 642         &dev_attr_unit.attr,
 643         &dev_attr_enabled.attr,
 644         &dev_attr_rx_pol_inv.attr,
 645         NULL
 646 };
 647
 648 static struct attribute_group dev_attr_group = {
 649         .attrs = dev_attributes
 650 };
 651
 652 /**
 653  * ipath_expose_reset - create a device reset file
 654  * @dev: the device structure
 655  *
 656  * Only expose a file that lets us reset the device after someone
 657  * enters diag mode.  A device reset is quite likely to crash the
 658  * machine entirely, so we don't want to normally make it
 659  * available.
 660  *
 661  * Called with ipath_mutex held.
 662  */
 663 int ipath_expose_reset(struct device *dev)
 664 {
 665         static int exposed;
 666         int ret;
 667
 668         if (!exposed) {
 669                 ret = device_create_file(dev, &dev_attr_reset);
 670                 exposed = 1;
 671         }
 672         else
 673                 ret = 0;
 674
 675         return ret;
 676 }
 677
 678 int ipath_driver_create_group(struct device_driver *drv)
 679 {
 680         int ret;
 681
 682         ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
 683
 684         return ret;
 685 }
 686
 687 void ipath_driver_remove_group(struct device_driver *drv)
 688 {
 689         sysfs_remove_group(&drv->kobj, &driver_attr_group);
 690 }
 691
 692 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
 693 {
 694         int ret;
 695         char unit[5];
 696
 697         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
 698         if (ret)
 699                 goto bail;
 700
 701         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
 702         if (ret)
 703                 goto bail_attrs;
 704
 705         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 706         ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
 707         if (ret == 0)
 708                 goto bail;
 709
 710         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 711 bail_attrs:
 712         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 713 bail:
 714         return ret;
 715 }
 716
 717 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
 718 {
 719         char unit[5];
 720
 721         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 722         sysfs_remove_link(&dev->driver->kobj, unit);
 723
 724         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 725         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 726
 727         device_remove_file(dev, &dev_attr_reset);
 728 }