drivers/infiniband/hw/ipath/ipath_sysfs.c

   1 /*
   2  * Copyright (c) 2006, 2007, 2008 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_verbs.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_localbus_info(struct device *dev,
 168                                struct device_attribute *attr,
 169                                char *buf)
 170 {
 171         struct ipath_devdata *dd = dev_get_drvdata(dev);
 172         /* The string printed here is already newline-terminated. */
 173         return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_lbus_info);
 174 }
 175
 176 static ssize_t show_lmc(struct device *dev,
 177                         struct device_attribute *attr,
 178                         char *buf)
 179 {
 180         struct ipath_devdata *dd = dev_get_drvdata(dev);
 181
 182         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc);
 183 }
 184
 185 static ssize_t store_lmc(struct device *dev,
 186                          struct device_attribute *attr,
 187                          const char *buf,
 188                          size_t count)
 189 {
 190         struct ipath_devdata *dd = dev_get_drvdata(dev);
 191         u16 lmc = 0;
 192         int ret;
 193
 194         ret = ipath_parse_ushort(buf, &lmc);
 195         if (ret < 0)
 196                 goto invalid;
 197
 198         if (lmc > 7) {
 199                 ret = -EINVAL;
 200                 goto invalid;
 201         }
 202
 203         ipath_set_lid(dd, dd->ipath_lid, lmc);
 204
 205         goto bail;
 206 invalid:
 207         ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc);
 208 bail:
 209         return ret;
 210 }
 211
 212 static ssize_t show_lid(struct device *dev,
 213                         struct device_attribute *attr,
 214                         char *buf)
 215 {
 216         struct ipath_devdata *dd = dev_get_drvdata(dev);
 217
 218         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_lid);
 219 }
 220
 221 static ssize_t store_lid(struct device *dev,
 222                          struct device_attribute *attr,
 223                           const char *buf,
 224                           size_t count)
 225 {
 226         struct ipath_devdata *dd = dev_get_drvdata(dev);
 227         u16 lid = 0;
 228         int ret;
 229
 230         ret = ipath_parse_ushort(buf, &lid);
 231         if (ret < 0)
 232                 goto invalid;
 233
 234         if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE) {
 235                 ret = -EINVAL;
 236                 goto invalid;
 237         }
 238
 239         ipath_set_lid(dd, lid, dd->ipath_lmc);
 240
 241         goto bail;
 242 invalid:
 243         ipath_dev_err(dd, "attempt to set invalid LID 0x%x\n", lid);
 244 bail:
 245         return ret;
 246 }
 247
 248 static ssize_t show_mlid(struct device *dev,
 249                          struct device_attribute *attr,
 250                          char *buf)
 251 {
 252         struct ipath_devdata *dd = dev_get_drvdata(dev);
 253
 254         return scnprintf(buf, PAGE_SIZE, "0x%x\n", dd->ipath_mlid);
 255 }
 256
 257 static ssize_t store_mlid(struct device *dev,
 258                          struct device_attribute *attr,
 259                           const char *buf,
 260                           size_t count)
 261 {
 262         struct ipath_devdata *dd = dev_get_drvdata(dev);
 263         u16 mlid;
 264         int ret;
 265
 266         ret = ipath_parse_ushort(buf, &mlid);
 267         if (ret < 0 || mlid < IPATH_MULTICAST_LID_BASE)
 268                 goto invalid;
 269
 270         dd->ipath_mlid = mlid;
 271
 272         goto bail;
 273 invalid:
 274         ipath_dev_err(dd, "attempt to set invalid MLID\n");
 275 bail:
 276         return ret;
 277 }
 278
 279 static ssize_t show_guid(struct device *dev,
 280                          struct device_attribute *attr,
 281                          char *buf)
 282 {
 283         struct ipath_devdata *dd = dev_get_drvdata(dev);
 284         u8 *guid;
 285
 286         guid = (u8 *) & (dd->ipath_guid);
 287
 288         return scnprintf(buf, PAGE_SIZE,
 289                          "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
 290                          guid[0], guid[1], guid[2], guid[3],
 291                          guid[4], guid[5], guid[6], guid[7]);
 292 }
 293
 294 static ssize_t store_guid(struct device *dev,
 295                          struct device_attribute *attr,
 296                           const char *buf,
 297                           size_t count)
 298 {
 299         struct ipath_devdata *dd = dev_get_drvdata(dev);
 300         ssize_t ret;
 301         unsigned short guid[8];
 302         __be64 new_guid;
 303         u8 *ng;
 304         int i;
 305
 306         if (sscanf(buf, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx",
 307                    &guid[0], &guid[1], &guid[2], &guid[3],
 308                    &guid[4], &guid[5], &guid[6], &guid[7]) != 8)
 309                 goto invalid;
 310
 311         ng = (u8 *) &new_guid;
 312
 313         for (i = 0; i < 8; i++) {
 314                 if (guid[i] > 0xff)
 315                         goto invalid;
 316                 ng[i] = guid[i];
 317         }
 318
 319         if (new_guid == 0)
 320                 goto invalid;
 321
 322         dd->ipath_guid = new_guid;
 323         dd->ipath_nguid = 1;
 324         if (dd->verbs_dev)
 325                 dd->verbs_dev->ibdev.node_guid = new_guid;
 326
 327         ret = strlen(buf);
 328         goto bail;
 329
 330 invalid:
 331         ipath_dev_err(dd, "attempt to set invalid GUID\n");
 332         ret = -EINVAL;
 333
 334 bail:
 335         return ret;
 336 }
 337
 338 static ssize_t show_nguid(struct device *dev,
 339                           struct device_attribute *attr,
 340                           char *buf)
 341 {
 342         struct ipath_devdata *dd = dev_get_drvdata(dev);
 343
 344         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_nguid);
 345 }
 346
 347 static ssize_t show_nports(struct device *dev,
 348                            struct device_attribute *attr,
 349                            char *buf)
 350 {
 351         struct ipath_devdata *dd = dev_get_drvdata(dev);
 352
 353         /* Return the number of user ports available. */
 354         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_cfgports - 1);
 355 }
 356
 357 static ssize_t show_serial(struct device *dev,
 358                            struct device_attribute *attr,
 359                            char *buf)
 360 {
 361         struct ipath_devdata *dd = dev_get_drvdata(dev);
 362
 363         buf[sizeof dd->ipath_serial] = '\0';
 364         memcpy(buf, dd->ipath_serial, sizeof dd->ipath_serial);
 365         strcat(buf, "\n");
 366         return strlen(buf);
 367 }
 368
 369 static ssize_t show_unit(struct device *dev,
 370                          struct device_attribute *attr,
 371                          char *buf)
 372 {
 373         struct ipath_devdata *dd = dev_get_drvdata(dev);
 374
 375         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_unit);
 376 }
 377
 378 static ssize_t show_jint_max_packets(struct device *dev,
 379                                      struct device_attribute *attr,
 380                                      char *buf)
 381 {
 382         struct ipath_devdata *dd = dev_get_drvdata(dev);
 383
 384         return scnprintf(buf, PAGE_SIZE, "%hu\n", dd->ipath_jint_max_packets);
 385 }
 386
 387 static ssize_t store_jint_max_packets(struct device *dev,
 388                                       struct device_attribute *attr,
 389                                       const char *buf,
 390                                       size_t count)
 391 {
 392         struct ipath_devdata *dd = dev_get_drvdata(dev);
 393         u16 v = 0;
 394         int ret;
 395
 396         ret = ipath_parse_ushort(buf, &v);
 397         if (ret < 0)
 398                 ipath_dev_err(dd, "invalid jint_max_packets.\n");
 399         else
 400                 dd->ipath_f_config_jint(dd, dd->ipath_jint_idle_ticks, v);
 401
 402         return ret;
 403 }
 404
 405 static ssize_t show_jint_idle_ticks(struct device *dev,
 406                                     struct device_attribute *attr,
 407                                     char *buf)
 408 {
 409         struct ipath_devdata *dd = dev_get_drvdata(dev);
 410
 411         return scnprintf(buf, PAGE_SIZE, "%hu\n", dd->ipath_jint_idle_ticks);
 412 }
 413
 414 static ssize_t store_jint_idle_ticks(struct device *dev,
 415                                      struct device_attribute *attr,
 416                                      const char *buf,
 417                                      size_t count)
 418 {
 419         struct ipath_devdata *dd = dev_get_drvdata(dev);
 420         u16 v = 0;
 421         int ret;
 422
 423         ret = ipath_parse_ushort(buf, &v);
 424         if (ret < 0)
 425                 ipath_dev_err(dd, "invalid jint_idle_ticks.\n");
 426         else
 427                 dd->ipath_f_config_jint(dd, v, dd->ipath_jint_max_packets);
 428
 429         return ret;
 430 }
 431
 432 #define DEVICE_COUNTER(name, attr) \
 433         static ssize_t show_counter_##name(struct device *dev, \
 434                                            struct device_attribute *attr, \
 435                                            char *buf) \
 436         { \
 437                 struct ipath_devdata *dd = dev_get_drvdata(dev); \
 438                 return scnprintf(\
 439                         buf, PAGE_SIZE, "%llu\n", (unsigned long long) \
 440                         ipath_snap_cntr( \
 441                                 dd, offsetof(struct infinipath_counters, \
 442                                              attr) / sizeof(u64)));     \
 443         } \
 444         static DEVICE_ATTR(name, S_IRUGO, show_counter_##name, NULL);
 445
 446 DEVICE_COUNTER(ib_link_downeds, IBLinkDownedCnt);
 447 DEVICE_COUNTER(ib_link_err_recoveries, IBLinkErrRecoveryCnt);
 448 DEVICE_COUNTER(ib_status_changes, IBStatusChangeCnt);
 449 DEVICE_COUNTER(ib_symbol_errs, IBSymbolErrCnt);
 450 DEVICE_COUNTER(lb_flow_stalls, LBFlowStallCnt);
 451 DEVICE_COUNTER(lb_ints, LBIntCnt);
 452 DEVICE_COUNTER(rx_bad_formats, RxBadFormatCnt);
 453 DEVICE_COUNTER(rx_buf_ovfls, RxBufOvflCnt);
 454 DEVICE_COUNTER(rx_data_pkts, RxDataPktCnt);
 455 DEVICE_COUNTER(rx_dropped_pkts, RxDroppedPktCnt);
 456 DEVICE_COUNTER(rx_dwords, RxDwordCnt);
 457 DEVICE_COUNTER(rx_ebps, RxEBPCnt);
 458 DEVICE_COUNTER(rx_flow_ctrl_errs, RxFlowCtrlErrCnt);
 459 DEVICE_COUNTER(rx_flow_pkts, RxFlowPktCnt);
 460 DEVICE_COUNTER(rx_icrc_errs, RxICRCErrCnt);
 461 DEVICE_COUNTER(rx_len_errs, RxLenErrCnt);
 462 DEVICE_COUNTER(rx_link_problems, RxLinkProblemCnt);
 463 DEVICE_COUNTER(rx_lpcrc_errs, RxLPCRCErrCnt);
 464 DEVICE_COUNTER(rx_max_min_len_errs, RxMaxMinLenErrCnt);
 465 DEVICE_COUNTER(rx_p0_hdr_egr_ovfls, RxP0HdrEgrOvflCnt);
 466 DEVICE_COUNTER(rx_p1_hdr_egr_ovfls, RxP1HdrEgrOvflCnt);
 467 DEVICE_COUNTER(rx_p2_hdr_egr_ovfls, RxP2HdrEgrOvflCnt);
 468 DEVICE_COUNTER(rx_p3_hdr_egr_ovfls, RxP3HdrEgrOvflCnt);
 469 DEVICE_COUNTER(rx_p4_hdr_egr_ovfls, RxP4HdrEgrOvflCnt);
 470 DEVICE_COUNTER(rx_p5_hdr_egr_ovfls, RxP5HdrEgrOvflCnt);
 471 DEVICE_COUNTER(rx_p6_hdr_egr_ovfls, RxP6HdrEgrOvflCnt);
 472 DEVICE_COUNTER(rx_p7_hdr_egr_ovfls, RxP7HdrEgrOvflCnt);
 473 DEVICE_COUNTER(rx_p8_hdr_egr_ovfls, RxP8HdrEgrOvflCnt);
 474 DEVICE_COUNTER(rx_pkey_mismatches, RxPKeyMismatchCnt);
 475 DEVICE_COUNTER(rx_tid_full_errs, RxTIDFullErrCnt);
 476 DEVICE_COUNTER(rx_tid_valid_errs, RxTIDValidErrCnt);
 477 DEVICE_COUNTER(rx_vcrc_errs, RxVCRCErrCnt);
 478 DEVICE_COUNTER(tx_data_pkts, TxDataPktCnt);
 479 DEVICE_COUNTER(tx_dropped_pkts, TxDroppedPktCnt);
 480 DEVICE_COUNTER(tx_dwords, TxDwordCnt);
 481 DEVICE_COUNTER(tx_flow_pkts, TxFlowPktCnt);
 482 DEVICE_COUNTER(tx_flow_stalls, TxFlowStallCnt);
 483 DEVICE_COUNTER(tx_len_errs, TxLenErrCnt);
 484 DEVICE_COUNTER(tx_max_min_len_errs, TxMaxMinLenErrCnt);
 485 DEVICE_COUNTER(tx_underruns, TxUnderrunCnt);
 486 DEVICE_COUNTER(tx_unsup_vl_errs, TxUnsupVLErrCnt);
 487
 488 static struct attribute *dev_counter_attributes[] = {
 489         &dev_attr_ib_link_downeds.attr,
 490         &dev_attr_ib_link_err_recoveries.attr,
 491         &dev_attr_ib_status_changes.attr,
 492         &dev_attr_ib_symbol_errs.attr,
 493         &dev_attr_lb_flow_stalls.attr,
 494         &dev_attr_lb_ints.attr,
 495         &dev_attr_rx_bad_formats.attr,
 496         &dev_attr_rx_buf_ovfls.attr,
 497         &dev_attr_rx_data_pkts.attr,
 498         &dev_attr_rx_dropped_pkts.attr,
 499         &dev_attr_rx_dwords.attr,
 500         &dev_attr_rx_ebps.attr,
 501         &dev_attr_rx_flow_ctrl_errs.attr,
 502         &dev_attr_rx_flow_pkts.attr,
 503         &dev_attr_rx_icrc_errs.attr,
 504         &dev_attr_rx_len_errs.attr,
 505         &dev_attr_rx_link_problems.attr,
 506         &dev_attr_rx_lpcrc_errs.attr,
 507         &dev_attr_rx_max_min_len_errs.attr,
 508         &dev_attr_rx_p0_hdr_egr_ovfls.attr,
 509         &dev_attr_rx_p1_hdr_egr_ovfls.attr,
 510         &dev_attr_rx_p2_hdr_egr_ovfls.attr,
 511         &dev_attr_rx_p3_hdr_egr_ovfls.attr,
 512         &dev_attr_rx_p4_hdr_egr_ovfls.attr,
 513         &dev_attr_rx_p5_hdr_egr_ovfls.attr,
 514         &dev_attr_rx_p6_hdr_egr_ovfls.attr,
 515         &dev_attr_rx_p7_hdr_egr_ovfls.attr,
 516         &dev_attr_rx_p8_hdr_egr_ovfls.attr,
 517         &dev_attr_rx_pkey_mismatches.attr,
 518         &dev_attr_rx_tid_full_errs.attr,
 519         &dev_attr_rx_tid_valid_errs.attr,
 520         &dev_attr_rx_vcrc_errs.attr,
 521         &dev_attr_tx_data_pkts.attr,
 522         &dev_attr_tx_dropped_pkts.attr,
 523         &dev_attr_tx_dwords.attr,
 524         &dev_attr_tx_flow_pkts.attr,
 525         &dev_attr_tx_flow_stalls.attr,
 526         &dev_attr_tx_len_errs.attr,
 527         &dev_attr_tx_max_min_len_errs.attr,
 528         &dev_attr_tx_underruns.attr,
 529         &dev_attr_tx_unsup_vl_errs.attr,
 530         NULL
 531 };
 532
 533 static struct attribute_group dev_counter_attr_group = {
 534         .name = "counters",
 535         .attrs = dev_counter_attributes
 536 };
 537
 538 static ssize_t store_reset(struct device *dev,
 539                          struct device_attribute *attr,
 540                           const char *buf,
 541                           size_t count)
 542 {
 543         struct ipath_devdata *dd = dev_get_drvdata(dev);
 544         int ret;
 545
 546         if (count < 5 || memcmp(buf, "reset", 5)) {
 547                 ret = -EINVAL;
 548                 goto bail;
 549         }
 550
 551         if (dd->ipath_flags & IPATH_DISABLED) {
 552                 /*
 553                  * post-reset init would re-enable interrupts, etc.
 554                  * so don't allow reset on disabled devices.  Not
 555                  * perfect error, but about the best choice.
 556                  */
 557                 dev_info(dev,"Unit %d is disabled, can't reset\n",
 558                          dd->ipath_unit);
 559                 ret = -EINVAL;
 560         }
 561         ret = ipath_reset_device(dd->ipath_unit);
 562 bail:
 563         return ret<0 ? ret : count;
 564 }
 565
 566 static ssize_t store_link_state(struct device *dev,
 567                          struct device_attribute *attr,
 568                           const char *buf,
 569                           size_t count)
 570 {
 571         struct ipath_devdata *dd = dev_get_drvdata(dev);
 572         int ret, r;
 573         u16 state;
 574
 575         ret = ipath_parse_ushort(buf, &state);
 576         if (ret < 0)
 577                 goto invalid;
 578
 579         r = ipath_set_linkstate(dd, state);
 580         if (r < 0) {
 581                 ret = r;
 582                 goto bail;
 583         }
 584
 585         goto bail;
 586 invalid:
 587         ipath_dev_err(dd, "attempt to set invalid link state\n");
 588 bail:
 589         return ret;
 590 }
 591
 592 static ssize_t show_mtu(struct device *dev,
 593                          struct device_attribute *attr,
 594                          char *buf)
 595 {
 596         struct ipath_devdata *dd = dev_get_drvdata(dev);
 597         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_ibmtu);
 598 }
 599
 600 static ssize_t store_mtu(struct device *dev,
 601                          struct device_attribute *attr,
 602                           const char *buf,
 603                           size_t count)
 604 {
 605         struct ipath_devdata *dd = dev_get_drvdata(dev);
 606         ssize_t ret;
 607         u16 mtu = 0;
 608         int r;
 609
 610         ret = ipath_parse_ushort(buf, &mtu);
 611         if (ret < 0)
 612                 goto invalid;
 613
 614         r = ipath_set_mtu(dd, mtu);
 615         if (r < 0)
 616                 ret = r;
 617
 618         goto bail;
 619 invalid:
 620         ipath_dev_err(dd, "attempt to set invalid MTU\n");
 621 bail:
 622         return ret;
 623 }
 624
 625 static ssize_t show_enabled(struct device *dev,
 626                          struct device_attribute *attr,
 627                          char *buf)
 628 {
 629         struct ipath_devdata *dd = dev_get_drvdata(dev);
 630         return scnprintf(buf, PAGE_SIZE, "%u\n",
 631                          (dd->ipath_flags & IPATH_DISABLED) ? 0 : 1);
 632 }
 633
 634 static ssize_t store_enabled(struct device *dev,
 635                          struct device_attribute *attr,
 636                           const char *buf,
 637                           size_t count)
 638 {
 639         struct ipath_devdata *dd = dev_get_drvdata(dev);
 640         ssize_t ret;
 641         u16 enable = 0;
 642
 643         ret = ipath_parse_ushort(buf, &enable);
 644         if (ret < 0) {
 645                 ipath_dev_err(dd, "attempt to use non-numeric on enable\n");
 646                 goto bail;
 647         }
 648
 649         if (enable) {
 650                 if (!(dd->ipath_flags & IPATH_DISABLED))
 651                         goto bail;
 652
 653                 dev_info(dev, "Enabling unit %d\n", dd->ipath_unit);
 654                 /* same as post-reset */
 655                 ret = ipath_init_chip(dd, 1);
 656                 if (ret)
 657                         ipath_dev_err(dd, "Failed to enable unit %d\n",
 658                                       dd->ipath_unit);
 659                 else {
 660                         dd->ipath_flags &= ~IPATH_DISABLED;
 661                         *dd->ipath_statusp &= ~IPATH_STATUS_ADMIN_DISABLED;
 662                 }
 663         }
 664         else if (!(dd->ipath_flags & IPATH_DISABLED)) {
 665                 dev_info(dev, "Disabling unit %d\n", dd->ipath_unit);
 666                 ipath_shutdown_device(dd);
 667                 dd->ipath_flags |= IPATH_DISABLED;
 668                 *dd->ipath_statusp |= IPATH_STATUS_ADMIN_DISABLED;
 669         }
 670
 671 bail:
 672         return ret;
 673 }
 674
 675 static ssize_t store_rx_pol_inv(struct device *dev,
 676                           struct device_attribute *attr,
 677                           const char *buf,
 678                           size_t count)
 679 {
 680         struct ipath_devdata *dd = dev_get_drvdata(dev);
 681         int ret, r;
 682         u16 val;
 683
 684         ret = ipath_parse_ushort(buf, &val);
 685         if (ret < 0)
 686                 goto invalid;
 687
 688         r = ipath_set_rx_pol_inv(dd, val);
 689         if (r < 0) {
 690                 ret = r;
 691                 goto bail;
 692         }
 693
 694         goto bail;
 695 invalid:
 696         ipath_dev_err(dd, "attempt to set invalid Rx Polarity invert\n");
 697 bail:
 698         return ret;
 699 }
 700
 701 static ssize_t store_led_override(struct device *dev,
 702                           struct device_attribute *attr,
 703                           const char *buf,
 704                           size_t count)
 705 {
 706         struct ipath_devdata *dd = dev_get_drvdata(dev);
 707         int ret;
 708         u16 val;
 709
 710         ret = ipath_parse_ushort(buf, &val);
 711         if (ret > 0)
 712                 ipath_set_led_override(dd, val);
 713         else
 714                 ipath_dev_err(dd, "attempt to set invalid LED override\n");
 715         return ret;
 716 }
 717
 718 static ssize_t show_logged_errs(struct device *dev,
 719                                 struct device_attribute *attr,
 720                                 char *buf)
 721 {
 722         struct ipath_devdata *dd = dev_get_drvdata(dev);
 723         int idx, count;
 724
 725         /* force consistency with actual EEPROM */
 726         if (ipath_update_eeprom_log(dd) != 0)
 727                 return -ENXIO;
 728
 729         count = 0;
 730         for (idx = 0; idx < IPATH_EEP_LOG_CNT; ++idx) {
 731                 count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
 732                         dd->ipath_eep_st_errs[idx],
 733                         idx == (IPATH_EEP_LOG_CNT - 1) ? '\n' : ' ');
 734         }
 735
 736         return count;
 737 }
 738
 739 /*
 740  * New sysfs entries to control various IB config. These all turn into
 741  * accesses via ipath_f_get/set_ib_cfg.
 742  *
 743  * Get/Set heartbeat enable. Or of 1=enabled, 2=auto
 744  */
 745 static ssize_t show_hrtbt_enb(struct device *dev,
 746                          struct device_attribute *attr,
 747                          char *buf)
 748 {
 749         struct ipath_devdata *dd = dev_get_drvdata(dev);
 750         int ret;
 751
 752         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_HRTBT);
 753         if (ret >= 0)
 754                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 755         return ret;
 756 }
 757
 758 static ssize_t store_hrtbt_enb(struct device *dev,
 759                           struct device_attribute *attr,
 760                           const char *buf,
 761                           size_t count)
 762 {
 763         struct ipath_devdata *dd = dev_get_drvdata(dev);
 764         int ret, r;
 765         u16 val;
 766
 767         ret = ipath_parse_ushort(buf, &val);
 768         if (ret >= 0 && val > 3)
 769                 ret = -EINVAL;
 770         if (ret < 0) {
 771                 ipath_dev_err(dd, "attempt to set invalid Heartbeat enable\n");
 772                 goto bail;
 773         }
 774
 775         /*
 776          * Set the "intentional" heartbeat enable per either of
 777          * "Enable" and "Auto", as these are normally set together.
 778          * This bit is consulted when leaving loopback mode,
 779          * because entering loopback mode overrides it and automatically
 780          * disables heartbeat.
 781          */
 782         r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_HRTBT, val);
 783         if (r < 0)
 784                 ret = r;
 785         else if (val == IPATH_IB_HRTBT_OFF)
 786                 dd->ipath_flags |= IPATH_NO_HRTBT;
 787         else
 788                 dd->ipath_flags &= ~IPATH_NO_HRTBT;
 789
 790 bail:
 791         return ret;
 792 }
 793
 794 /*
 795  * Get/Set Link-widths enabled. Or of 1=1x, 2=4x (this is human/IB centric,
 796  * _not_ the particular encoding of any given chip)
 797  */
 798 static ssize_t show_lwid_enb(struct device *dev,
 799                          struct device_attribute *attr,
 800                          char *buf)
 801 {
 802         struct ipath_devdata *dd = dev_get_drvdata(dev);
 803         int ret;
 804
 805         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB);
 806         if (ret >= 0)
 807                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 808         return ret;
 809 }
 810
 811 static ssize_t store_lwid_enb(struct device *dev,
 812                           struct device_attribute *attr,
 813                           const char *buf,
 814                           size_t count)
 815 {
 816         struct ipath_devdata *dd = dev_get_drvdata(dev);
 817         int ret, r;
 818         u16 val;
 819
 820         ret = ipath_parse_ushort(buf, &val);
 821         if (ret >= 0 && (val == 0 || val > 3))
 822                 ret = -EINVAL;
 823         if (ret < 0) {
 824                 ipath_dev_err(dd,
 825                         "attempt to set invalid Link Width (enable)\n");
 826                 goto bail;
 827         }
 828
 829         r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LWID_ENB, val);
 830         if (r < 0)
 831                 ret = r;
 832
 833 bail:
 834         return ret;
 835 }
 836
 837 /* Get current link width */
 838 static ssize_t show_lwid(struct device *dev,
 839                          struct device_attribute *attr,
 840                          char *buf)
 841
 842 {
 843         struct ipath_devdata *dd = dev_get_drvdata(dev);
 844         int ret;
 845
 846         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LWID);
 847         if (ret >= 0)
 848                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 849         return ret;
 850 }
 851
 852 /*
 853  * Get/Set Link-speeds enabled. Or of 1=SDR 2=DDR.
 854  */
 855 static ssize_t show_spd_enb(struct device *dev,
 856                          struct device_attribute *attr,
 857                          char *buf)
 858 {
 859         struct ipath_devdata *dd = dev_get_drvdata(dev);
 860         int ret;
 861
 862         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB);
 863         if (ret >= 0)
 864                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 865         return ret;
 866 }
 867
 868 static ssize_t store_spd_enb(struct device *dev,
 869                           struct device_attribute *attr,
 870                           const char *buf,
 871                           size_t count)
 872 {
 873         struct ipath_devdata *dd = dev_get_drvdata(dev);
 874         int ret, r;
 875         u16 val;
 876
 877         ret = ipath_parse_ushort(buf, &val);
 878         if (ret >= 0 && (val == 0 || val > (IPATH_IB_SDR | IPATH_IB_DDR)))
 879                 ret = -EINVAL;
 880         if (ret < 0) {
 881                 ipath_dev_err(dd,
 882                         "attempt to set invalid Link Speed (enable)\n");
 883                 goto bail;
 884         }
 885
 886         r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_SPD_ENB, val);
 887         if (r < 0)
 888                 ret = r;
 889
 890 bail:
 891         return ret;
 892 }
 893
 894 /* Get current link speed */
 895 static ssize_t show_spd(struct device *dev,
 896                          struct device_attribute *attr,
 897                          char *buf)
 898 {
 899         struct ipath_devdata *dd = dev_get_drvdata(dev);
 900         int ret;
 901
 902         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_SPD);
 903         if (ret >= 0)
 904                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 905         return ret;
 906 }
 907
 908 /*
 909  * Get/Set RX polarity-invert enable. 0=no, 1=yes.
 910  */
 911 static ssize_t show_rx_polinv_enb(struct device *dev,
 912                          struct device_attribute *attr,
 913                          char *buf)
 914 {
 915         struct ipath_devdata *dd = dev_get_drvdata(dev);
 916         int ret;
 917
 918         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_RXPOL_ENB);
 919         if (ret >= 0)
 920                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 921         return ret;
 922 }
 923
 924 static ssize_t store_rx_polinv_enb(struct device *dev,
 925                           struct device_attribute *attr,
 926                           const char *buf,
 927                           size_t count)
 928 {
 929         struct ipath_devdata *dd = dev_get_drvdata(dev);
 930         int ret, r;
 931         u16 val;
 932
 933         ret = ipath_parse_ushort(buf, &val);
 934         if (ret >= 0 && val > 1) {
 935                 ipath_dev_err(dd,
 936                         "attempt to set invalid Rx Polarity (enable)\n");
 937                 ret = -EINVAL;
 938                 goto bail;
 939         }
 940
 941         r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_RXPOL_ENB, val);
 942         if (r < 0)
 943                 ret = r;
 944
 945 bail:
 946         return ret;
 947 }
 948
 949 /*
 950  * Get/Set RX lane-reversal enable. 0=no, 1=yes.
 951  */
 952 static ssize_t show_lanerev_enb(struct device *dev,
 953                          struct device_attribute *attr,
 954                          char *buf)
 955 {
 956         struct ipath_devdata *dd = dev_get_drvdata(dev);
 957         int ret;
 958
 959         ret = dd->ipath_f_get_ib_cfg(dd, IPATH_IB_CFG_LREV_ENB);
 960         if (ret >= 0)
 961                 ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
 962         return ret;
 963 }
 964
 965 static ssize_t store_lanerev_enb(struct device *dev,
 966                           struct device_attribute *attr,
 967                           const char *buf,
 968                           size_t count)
 969 {
 970         struct ipath_devdata *dd = dev_get_drvdata(dev);
 971         int ret, r;
 972         u16 val;
 973
 974         ret = ipath_parse_ushort(buf, &val);
 975         if (ret >= 0 && val > 1) {
 976                 ret = -EINVAL;
 977                 ipath_dev_err(dd,
 978                         "attempt to set invalid Lane reversal (enable)\n");
 979                 goto bail;
 980         }
 981
 982         r = dd->ipath_f_set_ib_cfg(dd, IPATH_IB_CFG_LREV_ENB, val);
 983         if (r < 0)
 984                 ret = r;
 985
 986 bail:
 987         return ret;
 988 }
 989
 990 static DRIVER_ATTR(num_units, S_IRUGO, show_num_units, NULL);
 991 static DRIVER_ATTR(version, S_IRUGO, show_version, NULL);
 992
 993 static struct attribute *driver_attributes[] = {
 994         &driver_attr_num_units.attr,
 995         &driver_attr_version.attr,
 996         NULL
 997 };
 998
 999 static struct attribute_group driver_attr_group = {
1000         .attrs = driver_attributes
1001 };
1002
1003 static ssize_t store_tempsense(struct device *dev,
1004                                struct device_attribute *attr,
1005                                const char *buf,
1006                                size_t count)
1007 {
1008         struct ipath_devdata *dd = dev_get_drvdata(dev);
1009         int ret, stat;
1010         u16 val;
1011
1012         ret = ipath_parse_ushort(buf, &val);
1013         if (ret <= 0) {
1014                 ipath_dev_err(dd, "attempt to set invalid tempsense config\n");
1015                 goto bail;
1016         }
1017         /* If anything but the highest limit, enable T_CRIT_A "interrupt" */
1018         stat = ipath_tempsense_write(dd, 9, (val == 0x7f7f) ? 0x80 : 0);
1019         if (stat) {
1020                 ipath_dev_err(dd, "Unable to set tempsense config\n");
1021                 ret = -1;
1022                 goto bail;
1023         }
1024         stat = ipath_tempsense_write(dd, 0xB, (u8) (val & 0xFF));
1025         if (stat) {
1026                 ipath_dev_err(dd, "Unable to set local Tcrit\n");
1027                 ret = -1;
1028                 goto bail;
1029         }
1030         stat = ipath_tempsense_write(dd, 0xD, (u8) (val >> 8));
1031         if (stat) {
1032                 ipath_dev_err(dd, "Unable to set remote Tcrit\n");
1033                 ret = -1;
1034                 goto bail;
1035         }
1036
1037 bail:
1038         return ret;
1039 }
1040
1041 /*
1042  * dump tempsense regs. in decimal, to ease shell-scripts.
1043  */
1044 static ssize_t show_tempsense(struct device *dev,
1045                               struct device_attribute *attr,
1046                               char *buf)
1047 {
1048         struct ipath_devdata *dd = dev_get_drvdata(dev);
1049         int ret;
1050         int idx;
1051         u8 regvals[8];
1052
1053         ret = -ENXIO;
1054         for (idx = 0; idx < 8; ++idx) {
1055                 if (idx == 6)
1056                         continue;
1057                 ret = ipath_tempsense_read(dd, idx);
1058                 if (ret < 0)
1059                         break;
1060                 regvals[idx] = ret;
1061         }
1062         if (idx == 8)
1063                 ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n",
1064                         *(signed char *)(regvals),
1065                         *(signed char *)(regvals + 1),
1066                         regvals[2], regvals[3],
1067                         *(signed char *)(regvals + 5),
1068                         *(signed char *)(regvals + 7));
1069         return ret;
1070 }
1071
1072 const struct attribute_group *ipath_driver_attr_groups[] = {
1073         &driver_attr_group,
1074         NULL,
1075 };
1076
1077 static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
1078 static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc);
1079 static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
1080 static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
1081 static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
1082 static DEVICE_ATTR(mtu, S_IWUSR | S_IRUGO, show_mtu, store_mtu);
1083 static DEVICE_ATTR(enabled, S_IWUSR | S_IRUGO, show_enabled, store_enabled);
1084 static DEVICE_ATTR(nguid, S_IRUGO, show_nguid, NULL);
1085 static DEVICE_ATTR(nports, S_IRUGO, show_nports, NULL);
1086 static DEVICE_ATTR(reset, S_IWUSR, NULL, store_reset);
1087 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
1088 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
1089 static DEVICE_ATTR(status_str, S_IRUGO, show_status_str, NULL);
1090 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
1091 static DEVICE_ATTR(unit, S_IRUGO, show_unit, NULL);
1092 static DEVICE_ATTR(rx_pol_inv, S_IWUSR, NULL, store_rx_pol_inv);
1093 static DEVICE_ATTR(led_override, S_IWUSR, NULL, store_led_override);
1094 static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
1095 static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL);
1096 static DEVICE_ATTR(jint_max_packets, S_IWUSR | S_IRUGO,
1097                    show_jint_max_packets, store_jint_max_packets);
1098 static DEVICE_ATTR(jint_idle_ticks, S_IWUSR | S_IRUGO,
1099                    show_jint_idle_ticks, store_jint_idle_ticks);
1100 static DEVICE_ATTR(tempsense, S_IWUSR | S_IRUGO,
1101                    show_tempsense, store_tempsense);
1102
1103 static struct attribute *dev_attributes[] = {
1104         &dev_attr_guid.attr,
1105         &dev_attr_lmc.attr,
1106         &dev_attr_lid.attr,
1107         &dev_attr_link_state.attr,
1108         &dev_attr_mlid.attr,
1109         &dev_attr_mtu.attr,
1110         &dev_attr_nguid.attr,
1111         &dev_attr_nports.attr,
1112         &dev_attr_serial.attr,
1113         &dev_attr_status.attr,
1114         &dev_attr_status_str.attr,
1115         &dev_attr_boardversion.attr,
1116         &dev_attr_unit.attr,
1117         &dev_attr_enabled.attr,
1118         &dev_attr_rx_pol_inv.attr,
1119         &dev_attr_led_override.attr,
1120         &dev_attr_logged_errors.attr,
1121         &dev_attr_tempsense.attr,
1122         &dev_attr_localbus_info.attr,
1123         NULL
1124 };
1125
1126 static struct attribute_group dev_attr_group = {
1127         .attrs = dev_attributes
1128 };
1129
1130 static DEVICE_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
1131                    store_hrtbt_enb);
1132 static DEVICE_ATTR(link_width_enable, S_IWUSR | S_IRUGO, show_lwid_enb,
1133                    store_lwid_enb);
1134 static DEVICE_ATTR(link_width, S_IRUGO, show_lwid, NULL);
1135 static DEVICE_ATTR(link_speed_enable, S_IWUSR | S_IRUGO, show_spd_enb,
1136                    store_spd_enb);
1137 static DEVICE_ATTR(link_speed, S_IRUGO, show_spd, NULL);
1138 static DEVICE_ATTR(rx_pol_inv_enable, S_IWUSR | S_IRUGO, show_rx_polinv_enb,
1139                    store_rx_polinv_enb);
1140 static DEVICE_ATTR(rx_lane_rev_enable, S_IWUSR | S_IRUGO, show_lanerev_enb,
1141                    store_lanerev_enb);
1142
1143 static struct attribute *dev_ibcfg_attributes[] = {
1144         &dev_attr_hrtbt_enable.attr,
1145         &dev_attr_link_width_enable.attr,
1146         &dev_attr_link_width.attr,
1147         &dev_attr_link_speed_enable.attr,
1148         &dev_attr_link_speed.attr,
1149         &dev_attr_rx_pol_inv_enable.attr,
1150         &dev_attr_rx_lane_rev_enable.attr,
1151         NULL
1152 };
1153
1154 static struct attribute_group dev_ibcfg_attr_group = {
1155         .attrs = dev_ibcfg_attributes
1156 };
1157
1158 /**
1159  * ipath_expose_reset - create a device reset file
1160  * @dev: the device structure
1161  *
1162  * Only expose a file that lets us reset the device after someone
1163  * enters diag mode.  A device reset is quite likely to crash the
1164  * machine entirely, so we don't want to normally make it
1165  * available.
1166  *
1167  * Called with ipath_mutex held.
1168  */
1169 int ipath_expose_reset(struct device *dev)
1170 {
1171         static int exposed;
1172         int ret;
1173
1174         if (!exposed) {
1175                 ret = device_create_file(dev, &dev_attr_reset);
1176                 exposed = 1;
1177         }
1178         else
1179                 ret = 0;
1180
1181         return ret;
1182 }
1183
1184 int ipath_device_create_group(struct device *dev, struct ipath_devdata *dd)
1185 {
1186         int ret;
1187
1188         ret = sysfs_create_group(&dev->kobj, &dev_attr_group);
1189         if (ret)
1190                 goto bail;
1191
1192         ret = sysfs_create_group(&dev->kobj, &dev_counter_attr_group);
1193         if (ret)
1194                 goto bail_attrs;
1195
1196         if (dd->ipath_flags & IPATH_HAS_MULT_IB_SPEED) {
1197                 ret = device_create_file(dev, &dev_attr_jint_idle_ticks);
1198                 if (ret)
1199                         goto bail_counter;
1200                 ret = device_create_file(dev, &dev_attr_jint_max_packets);
1201                 if (ret)
1202                         goto bail_idle;
1203
1204                 ret = sysfs_create_group(&dev->kobj, &dev_ibcfg_attr_group);
1205                 if (ret)
1206                         goto bail_max;
1207         }
1208
1209         return 0;
1210
1211 bail_max:
1212         device_remove_file(dev, &dev_attr_jint_max_packets);
1213 bail_idle:
1214         device_remove_file(dev, &dev_attr_jint_idle_ticks);
1215 bail_counter:
1216         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
1217 bail_attrs:
1218         sysfs_remove_group(&dev->kobj, &dev_attr_group);
1219 bail:
1220         return ret;
1221 }
1222
1223 void ipath_device_remove_group(struct device *dev, struct ipath_devdata *dd)
1224 {
1225         sysfs_remove_group(&dev->kobj, &dev_counter_attr_group);
1226
1227         if (dd->ipath_flags & IPATH_HAS_MULT_IB_SPEED) {
1228                 sysfs_remove_group(&dev->kobj, &dev_ibcfg_attr_group);
1229                 device_remove_file(dev, &dev_attr_jint_idle_ticks);
1230                 device_remove_file(dev, &dev_attr_jint_max_packets);
1231         }
1232
1233         sysfs_remove_group(&dev->kobj, &dev_attr_group);
1234
1235         device_remove_file(dev, &dev_attr_reset);
1236 }