drivers/infiniband/hw/ipath/ipath_sysfs.c

   1 /*
   2  * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
   3  * Copyright (c) 2006 PathScale, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/ctype.h>
  35
  36 #include "ipath_kernel.h"
  37 #include "ipath_common.h"
  38
  39 /**
  40  * ipath_parse_ushort - parse an unsigned short value in an arbitrary base
  41  * @str: the string containing the number
  42  * @valp: where to put the result
  43  *
  44  * returns the number of bytes consumed, or negative value on error
  45  */
  46 int ipath_parse_ushort(const char *str, unsigned short *valp)
  47 {
  48         unsigned long val;
  49         char *end;
  50         int ret;
  51
  52         if (!isdigit(str[0])) {
  53                 ret = -EINVAL;
  54                 goto bail;
  55         }
  56
  57         val = simple_strtoul(str, &end, 0);
  58
  59         if (val > 0xffff) {
  60                 ret = -EINVAL;
  61                 goto bail;
  62         }
  63
  64         *valp = val;
  65
  66         ret = end + 1 - str;
  67         if (ret == 0)
  68                 ret = -EINVAL;
  69
  70 bail:
  71         return ret;
  72 }
  73
  74 static ssize_t show_version(struct device_driver *dev, char *buf)
  75 {
  76         /* The string printed here is already newline-terminated. */
  77         return scnprintf(buf, PAGE_SIZE, "%s", ib_ipath_version);
  78 }
  79
  80 static ssize_t show_num_units(struct device_driver *dev, char *buf)
  81 {
  82         return scnprintf(buf, PAGE_SIZE, "%d\n",
  83                          ipath_count_units(NULL, NULL, NULL));
  84 }
  85
  86 static ssize_t show_status(struct device *dev,
  87                            struct device_attribute *attr,
  88                            char *buf)
  89 {
  90         struct ipath_devdata *dd = dev_get_drvdata(dev);
  91         ssize_t ret;
  92
  93         if (!dd->ipath_statusp) {
  94                 ret = -EINVAL;
  95                 goto bail;
  96         }
  97
  98         ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
  99                         (unsigned long long) *(dd->ipath_statusp));
 100
 101 bail:
 102         return ret;
 103 }
 104
 105 static const char *ipath_status_str[] = {
 106         "Initted",
 107         "Disabled",
 108         "Admin_Disabled",
 109         "", /* This used to be the old "OIB_SMA" status. */
 110         "", /* This used to be the old "SMA" status. */
 111         "Present",
 112         "IB_link_up",
 113         "IB_configured",
 114         "NoIBcable",
 115         "Fatal_Hardware_Error",
 116         NULL,
 117 };
 118
 119 static ssize_t show_status_str(struct device *dev,
 120                                struct device_attribute *attr,
 121                                char *buf)
 122 {
 123         struct ipath_devdata *dd = dev_get_drvdata(dev);
 124         int i, any;
 125         u64 s;
 126         ssize_t ret;
 127
 128         if (!dd->ipath_statusp) {
 129                 ret = -EINVAL;
 130                 goto bail;
 131         }
 132
 133         s = *(dd->ipath_statusp);
 134         *buf = '\0';
 135         for (any = i = 0; s && ipath_status_str[i]; i++) {
 136                 if (s & 1) {
 137                         if (any && strlcat(buf, " ", PAGE_SIZE) >=
 138                             PAGE_SIZE)
 139                                 /* overflow */
 140                                 break;
 141                         if (strlcat(buf, ipath_status_str[i],
 142                                     PAGE_SIZE) >= PAGE_SIZE)
 143                                 break;
 144                         any = 1;
 145                 }
 146                 s >>= 1;
 147         }
 148         if (any)
 149                 strlcat(buf, "\n", PAGE_SIZE);
 150
 151         ret = strlen(buf);
 152
 153 bail:
 154         return ret;
 155 }
 156
 157 static ssize_t show_boardversion(struct device *dev,
 158                                struct device_attribute *attr,
 159                                char *buf)
 160 {
 161         struct ipath_devdata *dd = dev_get_drvdata(dev);
 162         /* The string printed here is already newline-terminated. */
 163         return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
 164 }
 165
 166 static ssize_t show_lmc(struct device *dev,
 167                         struct device_attribute *attr,
 168                         char *buf)
 169 {
 170         struct ipath_devdata *dd = dev_get_drvdata(dev);
 171
 172         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc);
 173 }
 174
 175 static ssize_t store_lmc(struct device *dev,
 176                          struct device_attribute *attr,
 177                          const char *buf,
 178                          size_t count)
 179 {
 180         struct ipath_devdata *dd = dev_get_drvdata(dev);
 181         u16 lmc = 0;
 182         int ret;
 183
 184         ret = ipath_parse_ushort(buf, &lmc);
 185         if (ret < 0)
 186                 goto invalid;
 187
 188         if (lmc > 7) {
 189                 ret = -EINVAL;
 190                 goto invalid;
 191         }
 192
 193         ipath_set_lid(dd, dd->ipath_lid, lmc);
 194
 195         goto bail;
 196 invalid:
 197         ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc);
 198 bail:
 199         return ret;
 200 }
 201
 202 static ssize_t show_lid(struct device *dev,
 203                         struct device_attribute *attr,
 204                         char *buf)
 205 {
 206         struct ipath_devdata *dd = dev_get_drvdata(dev);
 207
 208         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
 209 }
 210
 211 static ssize_t store_lid(struct device *dev,
 212                          struct device_attribute *attr,
 213                           const char *buf,
 214                           size_t count)
 215 {
 216         struct ipath_devdata *dd = dev_get_drvdata(dev);
 217         u16 lid = 0;
 218         int ret;
 219
 220         ret = ipath_parse_ushort(buf, &lid);
 221         if (ret < 0)
 222                 goto invalid;
 223
 224         if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
 225                 ret = -EINVAL;
 226                 goto invalid;
 227         }
 228
 229         ipath_set_lid(dd, lid, dd->ipath_lmc);
 230
 231         goto bail;
 232 invalid:
 233         ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
 234 bail:
 235         return ret;
 236 }
 237
 238 static ssize_t show_mlid(struct device *dev,
 239                          struct device_attribute *attr,
 240                          char *buf)
 241 {
 242         struct ipath_devdata *dd = dev_get_drvdata(dev);
 243
 244         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
 245 }
 246
 247 static ssize_t store_mlid(struct device *dev,
 248                          struct device_attribute *attr,
 249                           const char *buf,
 250                           size_t count)
 251 {
 252         struct ipath_devdata *dd = dev_get_drvdata(dev);
 253         u16 mlid;
 254         int ret;
 255
 256         ret = ipath_parse_ushort(buf, &mlid);
 257         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
 258                 goto invalid;
 259
 260         dd->ipath_mlid = mlid;
 261
 262         goto bail;
 263 invalid:
 264         ipath_dev_err(dd, "attempt to set invalid MLID\n");
 265 bail:
 266         return ret;
 267 }
 268
 269 static ssize_t show_guid(struct device *dev,
 270                          struct device_attribute *attr,
 271                          char *buf)
 272 {
 273         struct ipath_devdata *dd = dev_get_drvdata(dev);
 274         u8 *guid;
 275
 276         guid = (u8 *) & (dd->ipath_guid);
 277
 278         return scnprintf(buf, PAGE_SIZE,
 279                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 280                          guid[0], guid[1], guid[2], guid[3],
 281                          guid[4], guid[5], guid[6], guid[7]);
 282 }
 283
 284 static ssize_t store_guid(struct device *dev,
 285                          struct device_attribute *attr,
 286                           const char *buf,
 287                           size_t count)
 288 {
 289         struct ipath_devdata *dd = dev_get_drvdata(dev);
 290         ssize_t ret;
 291         unsigned short guid[8];
 292         __be64 new_guid;
 293         u8 *ng;
 294         int i;
 295
 296         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 297                    &guid[0], &guid[1], &guid[2], &guid[3],
 298                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
 299                 goto invalid;
 300
 301         ng = (u8 *) &new_guid;
 302
 303         for (i = 0; i < 8; i++) {
 304                 if (guid[i] > 0xff)
 305                         goto invalid;
 306                 ng[i] = guid[i];
 307         }
 308
 309         if (new_guid == 0)
 310                 goto invalid;
 311
 312         dd->ipath_guid = new_guid;
 313         dd->ipath_nguid = 1;
 314
 315         ret = strlen(buf);
 316         goto bail;
 317
 318 invalid:
 319         ipath_dev_err(dd, "attempt to set invalid GUID\n");
 320         ret = -EINVAL;
 321
 322 bail:
 323         return ret;
 324 }
 325
 326 static ssize_t show_nguid(struct device *dev,
 327                           struct device_attribute *attr,
 328                           char *buf)
 329 {
 330         struct ipath_devdata *dd = dev_get_drvdata(dev);
 331
 332         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
 333 }
 334
 335 static ssize_t show_nports(struct device *dev,
 336                            struct device_attribute *attr,
 337                            char *buf)
 338 {
 339         struct ipath_devdata *dd = dev_get_drvdata(dev);
 340
 341         /* Return the number of user ports available. */
 342         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
 343 }
 344
 345 static ssize_t show_serial(struct device *dev,
 346                            struct device_attribute *attr,
 347                            char *buf)
 348 {
 349         struct ipath_devdata *dd = dev_get_drvdata(dev);
 350
 351         buf[sizeof dd->ipath_serial] = '\0';
 352         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
 353         strcat(buf, "\n");
 354         return strlen(buf);
 355 }
 356
 357 static ssize_t show_unit(struct device *dev,
 358                          struct device_attribute *attr,
 359                          char *buf)
 360 {
 361         struct ipath_devdata *dd = dev_get_drvdata(dev);
 362
 363         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
 364 }
 365
 366 #define DEVICE_COUNTER(name, attr) \
 367         static ssize_t show_counter_##name(struct device *dev, \
 368                                            struct device_attribute *attr, \
 369                                            char *buf) \
 370         { \
 371                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
 372                 return scnprintf(\
 373                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
 374                         ipath_snap_cntr( \
 375                                 dd, offsetof(struct infinipath_counters, \
 376                                              attr) / sizeof(u64)));     \
 377         } \
 378         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
 379
 380 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
 381 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
 382 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
 383 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
 384 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
 385 DEVICE_COUNTER(lb_ints, LBIntCnt);
 386 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
 387 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
 388 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
 389 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
 390 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
 391 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
 392 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
 393 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
 394 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
 395 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
 396 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
 397 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
 398 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
 399 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
 400 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
 401 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
 402 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
 403 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
 404 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
 405 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
 406 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
 407 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
 408 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
 409 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
 410 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
 411 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
 412 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
 413 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
 414 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
 415 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
 416 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
 417 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
 418 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
 419 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
 420 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
 421
 422 static struct attribute *dev_counter_attributes[] = {
 423         &dev_attr_ib_link_downeds.attr,
 424         &dev_attr_ib_link_err_recoveries.attr,
 425         &dev_attr_ib_status_changes.attr,
 426         &dev_attr_ib_symbol_errs.attr,
 427         &dev_attr_lb_flow_stalls.attr,
 428         &dev_attr_lb_ints.attr,
 429         &dev_attr_rx_bad_formats.attr,
 430         &dev_attr_rx_buf_ovfls.attr,
 431         &dev_attr_rx_data_pkts.attr,
 432         &dev_attr_rx_dropped_pkts.attr,
 433         &dev_attr_rx_dwords.attr,
 434         &dev_attr_rx_ebps.attr,
 435         &dev_attr_rx_flow_ctrl_errs.attr,
 436         &dev_attr_rx_flow_pkts.attr,
 437         &dev_attr_rx_icrc_errs.attr,
 438         &dev_attr_rx_len_errs.attr,
 439         &dev_attr_rx_link_problems.attr,
 440         &dev_attr_rx_lpcrc_errs.attr,
 441         &dev_attr_rx_max_min_len_errs.attr,
 442         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
 443         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
 444         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
 445         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
 446         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
 447         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
 448         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
 449         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
 450         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
 451         &dev_attr_rx_pkey_mismatches.attr,
 452         &dev_attr_rx_tid_full_errs.attr,
 453         &dev_attr_rx_tid_valid_errs.attr,
 454         &dev_attr_rx_vcrc_errs.attr,
 455         &dev_attr_tx_data_pkts.attr,
 456         &dev_attr_tx_dropped_pkts.attr,
 457         &dev_attr_tx_dwords.attr,
 458         &dev_attr_tx_flow_pkts.attr,
 459         &dev_attr_tx_flow_stalls.attr,
 460         &dev_attr_tx_len_errs.attr,
 461         &dev_attr_tx_max_min_len_errs.attr,
 462         &dev_attr_tx_underruns.attr,
 463         &dev_attr_tx_unsup_vl_errs.attr,
 464         NULL
 465 };
 466
 467 static struct attribute_group dev_counter_attr_group = {
 468         .name = "counters",
 469         .attrs = dev_counter_attributes
 470 };
 471
 472 static ssize_t store_reset(struct device *dev,
 473                          struct device_attribute *attr,
 474                           const char *buf,
 475                           size_t count)
 476 {
 477         struct ipath_devdata *dd = dev_get_drvdata(dev);
 478         int ret;
 479
 480         if (count < 5 || memcmp(buf, "reset", 5)) {
 481                 ret = -EINVAL;
 482                 goto bail;
 483         }
 484
 485         if (dd->ipath_flags & IPATH_DISABLED) {
 486                 /*
 487                  * post-reset init would re-enable interrupts, etc.
 488                  * so don't allow reset on disabled devices.  Not
 489                  * perfect error, but about the best choice.
 490                  */
 491                 dev_info(dev,"Unit %d is disabled, can't reset\n",
 492                          dd->ipath_unit);
 493                 ret = -EINVAL;
 494         }
 495         ret = ipath_reset_device(dd->ipath_unit);
 496 bail:
 497         return ret<0 ? ret : count;
 498 }
 499
 500 static ssize_t store_link_state(struct device *dev,
 501                          struct device_attribute *attr,
 502                           const char *buf,
 503                           size_t count)
 504 {
 505         struct ipath_devdata *dd = dev_get_drvdata(dev);
 506         int ret, r;
 507         u16 state;
 508
 509         ret = ipath_parse_ushort(buf, &state);
 510         if (ret < 0)
 511                 goto invalid;
 512
 513         r = ipath_set_linkstate(dd, state);
 514         if (r < 0) {
 515                 ret = r;
 516                 goto bail;
 517         }
 518
 519         goto bail;
 520 invalid:
 521         ipath_dev_err(dd, "attempt to set invalid link state\n");
 522 bail:
 523         return ret;
 524 }
 525
 526 static ssize_t show_mtu(struct device *dev,
 527                          struct device_attribute *attr,
 528                          char *buf)
 529 {
 530         struct ipath_devdata *dd = dev_get_drvdata(dev);
 531         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
 532 }
 533
 534 static ssize_t store_mtu(struct device *dev,
 535                          struct device_attribute *attr,
 536                           const char *buf,
 537                           size_t count)
 538 {
 539         struct ipath_devdata *dd = dev_get_drvdata(dev);
 540         ssize_t ret;
 541         u16 mtu = 0;
 542         int r;
 543
 544         ret = ipath_parse_ushort(buf, &mtu);
 545         if (ret < 0)
 546                 goto invalid;
 547
 548         r = ipath_set_mtu(dd, mtu);
 549         if (r < 0)
 550                 ret = r;
 551
 552         goto bail;
 553 invalid:
 554         ipath_dev_err(dd, "attempt to set invalid MTU\n");
 555 bail:
 556         return ret;
 557 }
 558
 559 static ssize_t show_enabled(struct device *dev,
 560                          struct device_attribute *attr,
 561                          char *buf)
 562 {
 563         struct ipath_devdata *dd = dev_get_drvdata(dev);
 564         return scnprintf(buf, PAGE_SIZE, "%u\n",
 565                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
 566 }
 567
 568 static ssize_t store_enabled(struct device *dev,
 569                          struct device_attribute *attr,
 570                           const char *buf,
 571                           size_t count)
 572 {
 573         struct ipath_devdata *dd = dev_get_drvdata(dev);
 574         ssize_t ret;
 575         u16 enable = 0;
 576
 577         ret = ipath_parse_ushort(buf, &enable);
 578         if (ret < 0) {
 579                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
 580                 goto bail;
 581         }
 582
 583         if (enable) {
 584                 if (!(dd->ipath_flags & IPATH_DISABLED))
 585                         goto bail;
 586
 587                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
 588                 /* same as post-reset */
 589                 ret = ipath_init_chip(dd, 1);
 590                 if (ret)
 591                         ipath_dev_err(dd, "Failed to enable unit %d\n",
 592                                       dd->ipath_unit);
 593                 else {
 594                         dd->ipath_flags &= ~IPATH_DISABLED;
 595                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
 596                 }
 597         }
 598         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
 599                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
 600                 ipath_shutdown_device(dd);
 601                 dd->ipath_flags |= IPATH_DISABLED;
 602                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
 603         }
 604
 605 bail:
 606         return ret;
 607 }
 608
 609 static ssize_t store_rx_pol_inv(struct device *dev,
 610                           struct device_attribute *attr,
 611                           const char *buf,
 612                           size_t count)
 613 {
 614         struct ipath_devdata *dd = dev_get_drvdata(dev);
 615         int ret, r;
 616         u16 val;
 617
 618         ret = ipath_parse_ushort(buf, &val);
 619         if (ret < 0)
 620                 goto invalid;
 621
 622         r = ipath_set_rx_pol_inv(dd, val);
 623         if (r < 0) {
 624                 ret = r;
 625                 goto bail;
 626         }
 627
 628         goto bail;
 629 invalid:
 630         ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
 631 bail:
 632         return ret;
 633 }
 634
 635 static ssize_t store_led_override(struct device *dev,
 636                           struct device_attribute *attr,
 637                           const char *buf,
 638                           size_t count)
 639 {
 640         struct ipath_devdata *dd = dev_get_drvdata(dev);
 641         int ret;
 642         u16 val;
 643
 644         ret = ipath_parse_ushort(buf, &val);
 645         if (ret > 0)
 646                 ipath_set_led_override(dd, val);
 647         else
 648                 ipath_dev_err(dd, "attempt to set invalid LED override\n");
 649         return ret;
 650 }
 651
 652 static ssize_t show_logged_errs(struct device *dev,
 653                                 struct device_attribute *attr,
 654                                 char *buf)
 655 {
 656         struct ipath_devdata *dd = dev_get_drvdata(dev);
 657         int idx, count;
 658
 659         /* force consistency with actual EEPROM */
 660         if (ipath_update_eeprom_log(dd) != 0)
 661                 return -ENXIO;
 662
 663         count = 0;
 664         for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) {
 665                 count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
 666                         dd->ipath_eep_st_errs[idx],
 667                         idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' ');
 668         }
 669
 670         return count;
 671 }
 672
 673 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 674 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 675
 676 static struct attribute *driver_attributes[] = {
 677         &driver_attr_num_units.attr,
 678         &driver_attr_version.attr,
 679         NULL
 680 };
 681
 682 static struct attribute_group driver_attr_group = {
 683         .attrs = driver_attributes
 684 };
 685
 686 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
 687 static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc);
 688 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
 689 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
 690 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
 691 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
 692 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
 693 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
 694 static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
 695 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
 696 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 697 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
 698 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 699 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 700 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
 701 static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
 702 static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override);
 703 static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
 704
 705 static struct attribute *dev_attributes[] = {
 706         &dev_attr_guid.attr,
 707         &dev_attr_lmc.attr,
 708         &dev_attr_lid.attr,
 709         &dev_attr_link_state.attr,
 710         &dev_attr_mlid.attr,
 711         &dev_attr_mtu.attr,
 712         &dev_attr_nguid.attr,
 713         &dev_attr_nports.attr,
 714         &dev_attr_serial.attr,
 715         &dev_attr_status.attr,
 716         &dev_attr_status_str.attr,
 717         &dev_attr_boardversion.attr,
 718         &dev_attr_unit.attr,
 719         &dev_attr_enabled.attr,
 720         &dev_attr_rx_pol_inv.attr,
 721         &dev_attr_led_override.attr,
 722         &dev_attr_logged_errors.attr,
 723         NULL
 724 };
 725
 726 static struct attribute_group dev_attr_group = {
 727         .attrs = dev_attributes
 728 };
 729
 730 /**
 731  * ipath_expose_reset - create a device reset file
 732  * @dev: the device structure
 733  *
 734  * Only expose a file that lets us reset the device after someone
 735  * enters diag mode.  A device reset is quite likely to crash the
 736  * machine entirely, so we don't want to normally make it
 737  * available.
 738  *
 739  * Called with ipath_mutex held.
 740  */
 741 int ipath_expose_reset(struct device *dev)
 742 {
 743         static int exposed;
 744         int ret;
 745
 746         if (!exposed) {
 747                 ret = device_create_file(dev, &dev_attr_reset);
 748                 exposed = 1;
 749         }
 750         else
 751                 ret = 0;
 752
 753         return ret;
 754 }
 755
 756 int ipath_driver_create_group(struct device_driver *drv)
 757 {
 758         int ret;
 759
 760         ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
 761
 762         return ret;
 763 }
 764
 765 void ipath_driver_remove_group(struct device_driver *drv)
 766 {
 767         sysfs_remove_group(&drv->kobj, &driver_attr_group);
 768 }
 769
 770 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
 771 {
 772         int ret;
 773         char unit[5];
 774
 775         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
 776         if (ret)
 777                 goto bail;
 778
 779         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
 780         if (ret)
 781                 goto bail_attrs;
 782
 783         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 784         ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
 785         if (ret == 0)
 786                 goto bail;
 787
 788         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 789 bail_attrs:
 790         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 791 bail:
 792         return ret;
 793 }
 794
 795 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
 796 {
 797         char unit[5];
 798
 799         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 800         sysfs_remove_link(&dev->driver->kobj, unit);
 801
 802         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 803         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 804
 805         device_remove_file(dev, &dev_attr_reset);
 806 }