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_lid(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, "0x%x\n", dd->ipath_lid);
 173 }
 174
 175 static ssize_t store_lid(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 lid = 0;
 182         int ret;
 183
 184         ret = ipath_parse_ushort(buf, &lid);
 185         if (ret < 0)
 186                 goto invalid;
 187
 188         if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
 189                 ret = -EINVAL;
 190                 goto invalid;
 191         }
 192
 193         ipath_set_lid(dd, lid, 0);
 194
 195         goto bail;
 196 invalid:
 197         ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
 198 bail:
 199         return ret;
 200 }
 201
 202 static ssize_t show_mlid(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_mlid);
 209 }
 210
 211 static ssize_t store_mlid(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 mlid;
 218         int ret;
 219
 220         ret = ipath_parse_ushort(buf, &mlid);
 221         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
 222                 goto invalid;
 223
 224         dd->ipath_mlid = mlid;
 225
 226         goto bail;
 227 invalid:
 228         ipath_dev_err(dd, "attempt to set invalid MLID\n");
 229 bail:
 230         return ret;
 231 }
 232
 233 static ssize_t show_guid(struct device *dev,
 234                          struct device_attribute *attr,
 235                          char *buf)
 236 {
 237         struct ipath_devdata *dd = dev_get_drvdata(dev);
 238         u8 *guid;
 239
 240         guid = (u8 *) & (dd->ipath_guid);
 241
 242         return scnprintf(buf, PAGE_SIZE,
 243                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 244                          guid[0], guid[1], guid[2], guid[3],
 245                          guid[4], guid[5], guid[6], guid[7]);
 246 }
 247
 248 static ssize_t store_guid(struct device *dev,
 249                          struct device_attribute *attr,
 250                           const char *buf,
 251                           size_t count)
 252 {
 253         struct ipath_devdata *dd = dev_get_drvdata(dev);
 254         ssize_t ret;
 255         unsigned short guid[8];
 256         __be64 new_guid;
 257         u8 *ng;
 258         int i;
 259
 260         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 261                    &guid[0], &guid[1], &guid[2], &guid[3],
 262                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
 263                 goto invalid;
 264
 265         ng = (u8 *) &new_guid;
 266
 267         for (i = 0; i < 8; i++) {
 268                 if (guid[i] > 0xff)
 269                         goto invalid;
 270                 ng[i] = guid[i];
 271         }
 272
 273         if (new_guid == 0)
 274                 goto invalid;
 275
 276         dd->ipath_guid = new_guid;
 277         dd->ipath_nguid = 1;
 278
 279         ret = strlen(buf);
 280         goto bail;
 281
 282 invalid:
 283         ipath_dev_err(dd, "attempt to set invalid GUID\n");
 284         ret = -EINVAL;
 285
 286 bail:
 287         return ret;
 288 }
 289
 290 static ssize_t show_nguid(struct device *dev,
 291                           struct device_attribute *attr,
 292                           char *buf)
 293 {
 294         struct ipath_devdata *dd = dev_get_drvdata(dev);
 295
 296         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
 297 }
 298
 299 static ssize_t show_nports(struct device *dev,
 300                            struct device_attribute *attr,
 301                            char *buf)
 302 {
 303         struct ipath_devdata *dd = dev_get_drvdata(dev);
 304
 305         /* Return the number of user ports available. */
 306         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
 307 }
 308
 309 static ssize_t show_serial(struct device *dev,
 310                            struct device_attribute *attr,
 311                            char *buf)
 312 {
 313         struct ipath_devdata *dd = dev_get_drvdata(dev);
 314
 315         buf[sizeof dd->ipath_serial] = '\0';
 316         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
 317         strcat(buf, "\n");
 318         return strlen(buf);
 319 }
 320
 321 static ssize_t show_unit(struct device *dev,
 322                          struct device_attribute *attr,
 323                          char *buf)
 324 {
 325         struct ipath_devdata *dd = dev_get_drvdata(dev);
 326
 327         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
 328 }
 329
 330 #define DEVICE_COUNTER(name, attr) \
 331         static ssize_t show_counter_##name(struct device *dev, \
 332                                            struct device_attribute *attr, \
 333                                            char *buf) \
 334         { \
 335                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
 336                 return scnprintf(\
 337                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
 338                         ipath_snap_cntr( \
 339                                 dd, offsetof(struct infinipath_counters, \
 340                                              attr) / sizeof(u64)));     \
 341         } \
 342         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
 343
 344 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
 345 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
 346 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
 347 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
 348 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
 349 DEVICE_COUNTER(lb_ints, LBIntCnt);
 350 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
 351 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
 352 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
 353 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
 354 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
 355 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
 356 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
 357 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
 358 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
 359 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
 360 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
 361 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
 362 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
 363 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
 364 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
 365 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
 366 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
 367 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
 368 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
 369 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
 370 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
 371 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
 372 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
 373 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
 374 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
 375 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
 376 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
 377 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
 378 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
 379 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
 380 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
 381 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
 382 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
 383 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
 384 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
 385
 386 static struct attribute *dev_counter_attributes[] = {
 387         &dev_attr_ib_link_downeds.attr,
 388         &dev_attr_ib_link_err_recoveries.attr,
 389         &dev_attr_ib_status_changes.attr,
 390         &dev_attr_ib_symbol_errs.attr,
 391         &dev_attr_lb_flow_stalls.attr,
 392         &dev_attr_lb_ints.attr,
 393         &dev_attr_rx_bad_formats.attr,
 394         &dev_attr_rx_buf_ovfls.attr,
 395         &dev_attr_rx_data_pkts.attr,
 396         &dev_attr_rx_dropped_pkts.attr,
 397         &dev_attr_rx_dwords.attr,
 398         &dev_attr_rx_ebps.attr,
 399         &dev_attr_rx_flow_ctrl_errs.attr,
 400         &dev_attr_rx_flow_pkts.attr,
 401         &dev_attr_rx_icrc_errs.attr,
 402         &dev_attr_rx_len_errs.attr,
 403         &dev_attr_rx_link_problems.attr,
 404         &dev_attr_rx_lpcrc_errs.attr,
 405         &dev_attr_rx_max_min_len_errs.attr,
 406         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
 407         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
 408         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
 409         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
 410         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
 411         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
 412         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
 413         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
 414         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
 415         &dev_attr_rx_pkey_mismatches.attr,
 416         &dev_attr_rx_tid_full_errs.attr,
 417         &dev_attr_rx_tid_valid_errs.attr,
 418         &dev_attr_rx_vcrc_errs.attr,
 419         &dev_attr_tx_data_pkts.attr,
 420         &dev_attr_tx_dropped_pkts.attr,
 421         &dev_attr_tx_dwords.attr,
 422         &dev_attr_tx_flow_pkts.attr,
 423         &dev_attr_tx_flow_stalls.attr,
 424         &dev_attr_tx_len_errs.attr,
 425         &dev_attr_tx_max_min_len_errs.attr,
 426         &dev_attr_tx_underruns.attr,
 427         &dev_attr_tx_unsup_vl_errs.attr,
 428         NULL
 429 };
 430
 431 static struct attribute_group dev_counter_attr_group = {
 432         .name = "counters",
 433         .attrs = dev_counter_attributes
 434 };
 435
 436 static ssize_t store_reset(struct device *dev,
 437                          struct device_attribute *attr,
 438                           const char *buf,
 439                           size_t count)
 440 {
 441         struct ipath_devdata *dd = dev_get_drvdata(dev);
 442         int ret;
 443
 444         if (count < 5 || memcmp(buf, "reset", 5)) {
 445                 ret = -EINVAL;
 446                 goto bail;
 447         }
 448
 449         if (dd->ipath_flags & IPATH_DISABLED) {
 450                 /*
 451                  * post-reset init would re-enable interrupts, etc.
 452                  * so don't allow reset on disabled devices.  Not
 453                  * perfect error, but about the best choice.
 454                  */
 455                 dev_info(dev,"Unit %d is disabled, can't reset\n",
 456                          dd->ipath_unit);
 457                 ret = -EINVAL;
 458         }
 459         ret = ipath_reset_device(dd->ipath_unit);
 460 bail:
 461         return ret<0 ? ret : count;
 462 }
 463
 464 static ssize_t store_link_state(struct device *dev,
 465                          struct device_attribute *attr,
 466                           const char *buf,
 467                           size_t count)
 468 {
 469         struct ipath_devdata *dd = dev_get_drvdata(dev);
 470         int ret, r;
 471         u16 state;
 472
 473         ret = ipath_parse_ushort(buf, &state);
 474         if (ret < 0)
 475                 goto invalid;
 476
 477         r = ipath_set_linkstate(dd, state);
 478         if (r < 0) {
 479                 ret = r;
 480                 goto bail;
 481         }
 482
 483         goto bail;
 484 invalid:
 485         ipath_dev_err(dd, "attempt to set invalid link state\n");
 486 bail:
 487         return ret;
 488 }
 489
 490 static ssize_t show_mtu(struct device *dev,
 491                          struct device_attribute *attr,
 492                          char *buf)
 493 {
 494         struct ipath_devdata *dd = dev_get_drvdata(dev);
 495         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
 496 }
 497
 498 static ssize_t store_mtu(struct device *dev,
 499                          struct device_attribute *attr,
 500                           const char *buf,
 501                           size_t count)
 502 {
 503         struct ipath_devdata *dd = dev_get_drvdata(dev);
 504         ssize_t ret;
 505         u16 mtu = 0;
 506         int r;
 507
 508         ret = ipath_parse_ushort(buf, &mtu);
 509         if (ret < 0)
 510                 goto invalid;
 511
 512         r = ipath_set_mtu(dd, mtu);
 513         if (r < 0)
 514                 ret = r;
 515
 516         goto bail;
 517 invalid:
 518         ipath_dev_err(dd, "attempt to set invalid MTU\n");
 519 bail:
 520         return ret;
 521 }
 522
 523 static ssize_t show_enabled(struct device *dev,
 524                          struct device_attribute *attr,
 525                          char *buf)
 526 {
 527         struct ipath_devdata *dd = dev_get_drvdata(dev);
 528         return scnprintf(buf, PAGE_SIZE, "%u\n",
 529                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
 530 }
 531
 532 static ssize_t store_enabled(struct device *dev,
 533                          struct device_attribute *attr,
 534                           const char *buf,
 535                           size_t count)
 536 {
 537         struct ipath_devdata *dd = dev_get_drvdata(dev);
 538         ssize_t ret;
 539         u16 enable = 0;
 540
 541         ret = ipath_parse_ushort(buf, &enable);
 542         if (ret < 0) {
 543                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
 544                 goto bail;
 545         }
 546
 547         if (enable) {
 548                 if (!(dd->ipath_flags & IPATH_DISABLED))
 549                         goto bail;
 550
 551                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
 552                 /* same as post-reset */
 553                 ret = ipath_init_chip(dd, 1);
 554                 if (ret)
 555                         ipath_dev_err(dd, "Failed to enable unit %d\n",
 556                                       dd->ipath_unit);
 557                 else {
 558                         dd->ipath_flags &= ~IPATH_DISABLED;
 559                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
 560                 }
 561         }
 562         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
 563                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
 564                 ipath_shutdown_device(dd);
 565                 dd->ipath_flags |= IPATH_DISABLED;
 566                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
 567         }
 568
 569 bail:
 570         return ret;
 571 }
 572
 573 static ssize_t store_rx_pol_inv(struct device *dev,
 574                           struct device_attribute *attr,
 575                           const char *buf,
 576                           size_t count)
 577 {
 578         struct ipath_devdata *dd = dev_get_drvdata(dev);
 579         int ret, r;
 580         u16 val;
 581
 582         ret = ipath_parse_ushort(buf, &val);
 583         if (ret < 0)
 584                 goto invalid;
 585
 586         r = ipath_set_rx_pol_inv(dd, val);
 587         if (r < 0) {
 588                 ret = r;
 589                 goto bail;
 590         }
 591
 592         goto bail;
 593 invalid:
 594         ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
 595 bail:
 596         return ret;
 597 }
 598
 599 static ssize_t store_led_override(struct device *dev,
 600                           struct device_attribute *attr,
 601                           const char *buf,
 602                           size_t count)
 603 {
 604         struct ipath_devdata *dd = dev_get_drvdata(dev);
 605         int ret;
 606         u16 val;
 607
 608         ret = ipath_parse_ushort(buf, &val);
 609         if (ret > 0)
 610                 ipath_set_led_override(dd, val);
 611         else
 612                 ipath_dev_err(dd, "attempt to set invalid LED override\n");
 613         return ret;
 614 }
 615
 616 static ssize_t show_logged_errs(struct device *dev,
 617                                 struct device_attribute *attr,
 618                                 char *buf)
 619 {
 620         struct ipath_devdata *dd = dev_get_drvdata(dev);
 621         int idx, count;
 622
 623         /* force consistency with actual EEPROM */
 624         if (ipath_update_eeprom_log(dd) != 0)
 625                 return -ENXIO;
 626
 627         count = 0;
 628         for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) {
 629                 count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
 630                         dd->ipath_eep_st_errs[idx],
 631                         idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' ');
 632         }
 633
 634         return count;
 635 }
 636
 637 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 638 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 639
 640 static struct attribute *driver_attributes[] = {
 641         &driver_attr_num_units.attr,
 642         &driver_attr_version.attr,
 643         NULL
 644 };
 645
 646 static struct attribute_group driver_attr_group = {
 647         .attrs = driver_attributes
 648 };
 649
 650 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
 651 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
 652 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
 653 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
 654 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
 655 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
 656 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
 657 static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
 658 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
 659 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 660 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
 661 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 662 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 663 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
 664 static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
 665 static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override);
 666 static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
 667
 668 static struct attribute *dev_attributes[] = {
 669         &dev_attr_guid.attr,
 670         &dev_attr_lid.attr,
 671         &dev_attr_link_state.attr,
 672         &dev_attr_mlid.attr,
 673         &dev_attr_mtu.attr,
 674         &dev_attr_nguid.attr,
 675         &dev_attr_nports.attr,
 676         &dev_attr_serial.attr,
 677         &dev_attr_status.attr,
 678         &dev_attr_status_str.attr,
 679         &dev_attr_boardversion.attr,
 680         &dev_attr_unit.attr,
 681         &dev_attr_enabled.attr,
 682         &dev_attr_rx_pol_inv.attr,
 683         &dev_attr_led_override.attr,
 684         &dev_attr_logged_errors.attr,
 685         NULL
 686 };
 687
 688 static struct attribute_group dev_attr_group = {
 689         .attrs = dev_attributes
 690 };
 691
 692 /**
 693  * ipath_expose_reset - create a device reset file
 694  * @dev: the device structure
 695  *
 696  * Only expose a file that lets us reset the device after someone
 697  * enters diag mode.  A device reset is quite likely to crash the
 698  * machine entirely, so we don't want to normally make it
 699  * available.
 700  *
 701  * Called with ipath_mutex held.
 702  */
 703 int ipath_expose_reset(struct device *dev)
 704 {
 705         static int exposed;
 706         int ret;
 707
 708         if (!exposed) {
 709                 ret = device_create_file(dev, &dev_attr_reset);
 710                 exposed = 1;
 711         }
 712         else
 713                 ret = 0;
 714
 715         return ret;
 716 }
 717
 718 int ipath_driver_create_group(struct device_driver *drv)
 719 {
 720         int ret;
 721
 722         ret = sysfs_create_group(&drv->kobj, &driver_attr_group);
 723
 724         return ret;
 725 }
 726
 727 void ipath_driver_remove_group(struct device_driver *drv)
 728 {
 729         sysfs_remove_group(&drv->kobj, &driver_attr_group);
 730 }
 731
 732 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
 733 {
 734         int ret;
 735         char unit[5];
 736
 737         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
 738         if (ret)
 739                 goto bail;
 740
 741         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
 742         if (ret)
 743                 goto bail_attrs;
 744
 745         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 746         ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj, unit);
 747         if (ret == 0)
 748                 goto bail;
 749
 750         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 751 bail_attrs:
 752         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 753 bail:
 754         return ret;
 755 }
 756
 757 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
 758 {
 759         char unit[5];
 760
 761         snprintf(unit, sizeof(unit), "%02d", dd->ipath_unit);
 762         sysfs_remove_link(&dev->driver->kobj, unit);
 763
 764         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
 765         sysfs_remove_group(&dev->kobj, &dev_attr_group);
 766
 767         device_remove_file(dev, &dev_attr_reset);
 768 }