drivers/infiniband/hw/qib/qib_sysfs.c

   1 /*
   2  * Copyright (c) 2012 Intel Corporation.  All rights reserved.
   3  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
   4  * Copyright (c) 2006 PathScale, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34 #include <linux/ctype.h>
  35
  36 #include "qib.h"
  37 #include "qib_mad.h"
  38
  39 /* start of per-port functions */
  40 /*
  41  * Get/Set heartbeat enable. OR of 1=enabled, 2=auto
  42  */
  43 static ssize_t show_hrtbt_enb(struct qib_pportdata *ppd, char *buf)
  44 {
  45         struct qib_devdata *dd = ppd->dd;
  46         int ret;
  47
  48         ret = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT);
  49         ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
  50         return ret;
  51 }
  52
  53 static ssize_t store_hrtbt_enb(struct qib_pportdata *ppd, const char *buf,
  54                                size_t count)
  55 {
  56         struct qib_devdata *dd = ppd->dd;
  57         int ret;
  58         u16 val;
  59
  60         ret = kstrtou16(buf, 0, &val);
  61         if (ret) {
  62                 qib_dev_err(dd, "attempt to set invalid Heartbeat enable\n");
  63                 return ret;
  64         }
  65
  66         /*
  67          * Set the "intentional" heartbeat enable per either of
  68          * "Enable" and "Auto", as these are normally set together.
  69          * This bit is consulted when leaving loopback mode,
  70          * because entering loopback mode overrides it and automatically
  71          * disables heartbeat.
  72          */
  73         ret = dd->f_set_ib_cfg(ppd, QIB_IB_CFG_HRTBT, val);
  74         return ret < 0 ? ret : count;
  75 }
  76
  77 static ssize_t store_loopback(struct qib_pportdata *ppd, const char *buf,
  78                               size_t count)
  79 {
  80         struct qib_devdata *dd = ppd->dd;
  81         int ret = count, r;
  82
  83         r = dd->f_set_ib_loopback(ppd, buf);
  84         if (r < 0)
  85                 ret = r;
  86
  87         return ret;
  88 }
  89
  90 static ssize_t store_led_override(struct qib_pportdata *ppd, const char *buf,
  91                                   size_t count)
  92 {
  93         struct qib_devdata *dd = ppd->dd;
  94         int ret;
  95         u16 val;
  96
  97         ret = kstrtou16(buf, 0, &val);
  98         if (ret) {
  99                 qib_dev_err(dd, "attempt to set invalid LED override\n");
 100                 return ret;
 101         }
 102
 103         qib_set_led_override(ppd, val);
 104         return count;
 105 }
 106
 107 static ssize_t show_status(struct qib_pportdata *ppd, char *buf)
 108 {
 109         ssize_t ret;
 110
 111         if (!ppd->statusp)
 112                 ret = -EINVAL;
 113         else
 114                 ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
 115                                 (unsigned long long) *(ppd->statusp));
 116         return ret;
 117 }
 118
 119 /*
 120  * For userland compatibility, these offsets must remain fixed.
 121  * They are strings for QIB_STATUS_*
 122  */
 123 static const char * const qib_status_str[] = {
 124         "Initted",
 125         "",
 126         "",
 127         "",
 128         "",
 129         "Present",
 130         "IB_link_up",
 131         "IB_configured",
 132         "",
 133         "Fatal_Hardware_Error",
 134         NULL,
 135 };
 136
 137 static ssize_t show_status_str(struct qib_pportdata *ppd, char *buf)
 138 {
 139         int i, any;
 140         u64 s;
 141         ssize_t ret;
 142
 143         if (!ppd->statusp) {
 144                 ret = -EINVAL;
 145                 goto bail;
 146         }
 147
 148         s = *(ppd->statusp);
 149         *buf = '\0';
 150         for (any = i = 0; s && qib_status_str[i]; i++) {
 151                 if (s & 1) {
 152                         /* if overflow */
 153                         if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
 154                                 break;
 155                         if (strlcat(buf, qib_status_str[i], PAGE_SIZE) >=
 156                                         PAGE_SIZE)
 157                                 break;
 158                         any = 1;
 159                 }
 160                 s >>= 1;
 161         }
 162         if (any)
 163                 strlcat(buf, "\n", PAGE_SIZE);
 164
 165         ret = strlen(buf);
 166
 167 bail:
 168         return ret;
 169 }
 170
 171 /* end of per-port functions */
 172
 173 /*
 174  * Start of per-port file structures and support code
 175  * Because we are fitting into other infrastructure, we have to supply the
 176  * full set of kobject/sysfs_ops structures and routines.
 177  */
 178 #define QIB_PORT_ATTR(name, mode, show, store) \
 179         static struct qib_port_attr qib_port_attr_##name = \
 180                 __ATTR(name, mode, show, store)
 181
 182 struct qib_port_attr {
 183         struct attribute attr;
 184         ssize_t (*show)(struct qib_pportdata *, char *);
 185         ssize_t (*store)(struct qib_pportdata *, const char *, size_t);
 186 };
 187
 188 QIB_PORT_ATTR(loopback, S_IWUSR, NULL, store_loopback);
 189 QIB_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override);
 190 QIB_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
 191               store_hrtbt_enb);
 192 QIB_PORT_ATTR(status, S_IRUGO, show_status, NULL);
 193 QIB_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL);
 194
 195 static struct attribute *port_default_attributes[] = {
 196         &qib_port_attr_loopback.attr,
 197         &qib_port_attr_led_override.attr,
 198         &qib_port_attr_hrtbt_enable.attr,
 199         &qib_port_attr_status.attr,
 200         &qib_port_attr_status_str.attr,
 201         NULL
 202 };
 203
 204 /*
 205  * Start of per-port congestion control structures and support code
 206  */
 207
 208 /*
 209  * Congestion control table size followed by table entries
 210  */
 211 static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj,
 212                 struct bin_attribute *bin_attr,
 213                 char *buf, loff_t pos, size_t count)
 214 {
 215         int ret;
 216         struct qib_pportdata *ppd =
 217                 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
 218
 219         if (!qib_cc_table_size || !ppd->ccti_entries_shadow)
 220                 return -EINVAL;
 221
 222         ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
 223                  + sizeof(__be16);
 224
 225         if (pos > ret)
 226                 return -EINVAL;
 227
 228         if (count > ret - pos)
 229                 count = ret - pos;
 230
 231         if (!count)
 232                 return count;
 233
 234         spin_lock(&ppd->cc_shadow_lock);
 235         memcpy(buf, ppd->ccti_entries_shadow, count);
 236         spin_unlock(&ppd->cc_shadow_lock);
 237
 238         return count;
 239 }
 240
 241 static void qib_port_release(struct kobject *kobj)
 242 {
 243         /* nothing to do since memory is freed by qib_free_devdata() */
 244 }
 245
 246 static struct kobj_type qib_port_cc_ktype = {
 247         .release = qib_port_release,
 248 };
 249
 250 static struct bin_attribute cc_table_bin_attr = {
 251         .attr = {.name = "cc_table_bin", .mode = 0444},
 252         .read = read_cc_table_bin,
 253         .size = PAGE_SIZE,
 254 };
 255
 256 /*
 257  * Congestion settings: port control, control map and an array of 16
 258  * entries for the congestion entries - increase, timer, event log
 259  * trigger threshold and the minimum injection rate delay.
 260  */
 261 static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj,
 262                 struct bin_attribute *bin_attr,
 263                 char *buf, loff_t pos, size_t count)
 264 {
 265         int ret;
 266         struct qib_pportdata *ppd =
 267                 container_of(kobj, struct qib_pportdata, pport_cc_kobj);
 268
 269         if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
 270                 return -EINVAL;
 271
 272         ret = sizeof(struct ib_cc_congestion_setting_attr_shadow);
 273
 274         if (pos > ret)
 275                 return -EINVAL;
 276         if (count > ret - pos)
 277                 count = ret - pos;
 278
 279         if (!count)
 280                 return count;
 281
 282         spin_lock(&ppd->cc_shadow_lock);
 283         memcpy(buf, ppd->congestion_entries_shadow, count);
 284         spin_unlock(&ppd->cc_shadow_lock);
 285
 286         return count;
 287 }
 288
 289 static struct bin_attribute cc_setting_bin_attr = {
 290         .attr = {.name = "cc_settings_bin", .mode = 0444},
 291         .read = read_cc_setting_bin,
 292         .size = PAGE_SIZE,
 293 };
 294
 295
 296 static ssize_t qib_portattr_show(struct kobject *kobj,
 297         struct attribute *attr, char *buf)
 298 {
 299         struct qib_port_attr *pattr =
 300                 container_of(attr, struct qib_port_attr, attr);
 301         struct qib_pportdata *ppd =
 302                 container_of(kobj, struct qib_pportdata, pport_kobj);
 303
 304         return pattr->show(ppd, buf);
 305 }
 306
 307 static ssize_t qib_portattr_store(struct kobject *kobj,
 308         struct attribute *attr, const char *buf, size_t len)
 309 {
 310         struct qib_port_attr *pattr =
 311                 container_of(attr, struct qib_port_attr, attr);
 312         struct qib_pportdata *ppd =
 313                 container_of(kobj, struct qib_pportdata, pport_kobj);
 314
 315         return pattr->store(ppd, buf, len);
 316 }
 317
 318
 319 static const struct sysfs_ops qib_port_ops = {
 320         .show = qib_portattr_show,
 321         .store = qib_portattr_store,
 322 };
 323
 324 static struct kobj_type qib_port_ktype = {
 325         .release = qib_port_release,
 326         .sysfs_ops = &qib_port_ops,
 327         .default_attrs = port_default_attributes
 328 };
 329
 330 /* Start sl2vl */
 331
 332 #define QIB_SL2VL_ATTR(N) \
 333         static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \
 334                 .attr = { .name = __stringify(N), .mode = 0444 }, \
 335                 .sl = N \
 336         }
 337
 338 struct qib_sl2vl_attr {
 339         struct attribute attr;
 340         int sl;
 341 };
 342
 343 QIB_SL2VL_ATTR(0);
 344 QIB_SL2VL_ATTR(1);
 345 QIB_SL2VL_ATTR(2);
 346 QIB_SL2VL_ATTR(3);
 347 QIB_SL2VL_ATTR(4);
 348 QIB_SL2VL_ATTR(5);
 349 QIB_SL2VL_ATTR(6);
 350 QIB_SL2VL_ATTR(7);
 351 QIB_SL2VL_ATTR(8);
 352 QIB_SL2VL_ATTR(9);
 353 QIB_SL2VL_ATTR(10);
 354 QIB_SL2VL_ATTR(11);
 355 QIB_SL2VL_ATTR(12);
 356 QIB_SL2VL_ATTR(13);
 357 QIB_SL2VL_ATTR(14);
 358 QIB_SL2VL_ATTR(15);
 359
 360 static struct attribute *sl2vl_default_attributes[] = {
 361         &qib_sl2vl_attr_0.attr,
 362         &qib_sl2vl_attr_1.attr,
 363         &qib_sl2vl_attr_2.attr,
 364         &qib_sl2vl_attr_3.attr,
 365         &qib_sl2vl_attr_4.attr,
 366         &qib_sl2vl_attr_5.attr,
 367         &qib_sl2vl_attr_6.attr,
 368         &qib_sl2vl_attr_7.attr,
 369         &qib_sl2vl_attr_8.attr,
 370         &qib_sl2vl_attr_9.attr,
 371         &qib_sl2vl_attr_10.attr,
 372         &qib_sl2vl_attr_11.attr,
 373         &qib_sl2vl_attr_12.attr,
 374         &qib_sl2vl_attr_13.attr,
 375         &qib_sl2vl_attr_14.attr,
 376         &qib_sl2vl_attr_15.attr,
 377         NULL
 378 };
 379
 380 static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr,
 381                                char *buf)
 382 {
 383         struct qib_sl2vl_attr *sattr =
 384                 container_of(attr, struct qib_sl2vl_attr, attr);
 385         struct qib_pportdata *ppd =
 386                 container_of(kobj, struct qib_pportdata, sl2vl_kobj);
 387         struct qib_ibport *qibp = &ppd->ibport_data;
 388
 389         return sprintf(buf, "%u\n", qibp->sl_to_vl[sattr->sl]);
 390 }
 391
 392 static const struct sysfs_ops qib_sl2vl_ops = {
 393         .show = sl2vl_attr_show,
 394 };
 395
 396 static struct kobj_type qib_sl2vl_ktype = {
 397         .release = qib_port_release,
 398         .sysfs_ops = &qib_sl2vl_ops,
 399         .default_attrs = sl2vl_default_attributes
 400 };
 401
 402 /* End sl2vl */
 403
 404 /* Start diag_counters */
 405
 406 #define QIB_DIAGC_ATTR(N) \
 407         static struct qib_diagc_attr qib_diagc_attr_##N = { \
 408                 .attr = { .name = __stringify(N), .mode = 0664 }, \
 409                 .counter = offsetof(struct qib_ibport, n_##N) \
 410         }
 411
 412 struct qib_diagc_attr {
 413         struct attribute attr;
 414         size_t counter;
 415 };
 416
 417 QIB_DIAGC_ATTR(rc_resends);
 418 QIB_DIAGC_ATTR(rc_acks);
 419 QIB_DIAGC_ATTR(rc_qacks);
 420 QIB_DIAGC_ATTR(rc_delayed_comp);
 421 QIB_DIAGC_ATTR(seq_naks);
 422 QIB_DIAGC_ATTR(rdma_seq);
 423 QIB_DIAGC_ATTR(rnr_naks);
 424 QIB_DIAGC_ATTR(other_naks);
 425 QIB_DIAGC_ATTR(rc_timeouts);
 426 QIB_DIAGC_ATTR(loop_pkts);
 427 QIB_DIAGC_ATTR(pkt_drops);
 428 QIB_DIAGC_ATTR(dmawait);
 429 QIB_DIAGC_ATTR(unaligned);
 430 QIB_DIAGC_ATTR(rc_dupreq);
 431 QIB_DIAGC_ATTR(rc_seqnak);
 432
 433 static struct attribute *diagc_default_attributes[] = {
 434         &qib_diagc_attr_rc_resends.attr,
 435         &qib_diagc_attr_rc_acks.attr,
 436         &qib_diagc_attr_rc_qacks.attr,
 437         &qib_diagc_attr_rc_delayed_comp.attr,
 438         &qib_diagc_attr_seq_naks.attr,
 439         &qib_diagc_attr_rdma_seq.attr,
 440         &qib_diagc_attr_rnr_naks.attr,
 441         &qib_diagc_attr_other_naks.attr,
 442         &qib_diagc_attr_rc_timeouts.attr,
 443         &qib_diagc_attr_loop_pkts.attr,
 444         &qib_diagc_attr_pkt_drops.attr,
 445         &qib_diagc_attr_dmawait.attr,
 446         &qib_diagc_attr_unaligned.attr,
 447         &qib_diagc_attr_rc_dupreq.attr,
 448         &qib_diagc_attr_rc_seqnak.attr,
 449         NULL
 450 };
 451
 452 static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
 453                                char *buf)
 454 {
 455         struct qib_diagc_attr *dattr =
 456                 container_of(attr, struct qib_diagc_attr, attr);
 457         struct qib_pportdata *ppd =
 458                 container_of(kobj, struct qib_pportdata, diagc_kobj);
 459         struct qib_ibport *qibp = &ppd->ibport_data;
 460
 461         return sprintf(buf, "%u\n", *(u32 *)((char *)qibp + dattr->counter));
 462 }
 463
 464 static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
 465                                 const char *buf, size_t size)
 466 {
 467         struct qib_diagc_attr *dattr =
 468                 container_of(attr, struct qib_diagc_attr, attr);
 469         struct qib_pportdata *ppd =
 470                 container_of(kobj, struct qib_pportdata, diagc_kobj);
 471         struct qib_ibport *qibp = &ppd->ibport_data;
 472         u32 val;
 473         int ret;
 474
 475         ret = kstrtou32(buf, 0, &val);
 476         if (ret)
 477                 return ret;
 478         *(u32 *)((char *) qibp + dattr->counter) = val;
 479         return size;
 480 }
 481
 482 static const struct sysfs_ops qib_diagc_ops = {
 483         .show = diagc_attr_show,
 484         .store = diagc_attr_store,
 485 };
 486
 487 static struct kobj_type qib_diagc_ktype = {
 488         .release = qib_port_release,
 489         .sysfs_ops = &qib_diagc_ops,
 490         .default_attrs = diagc_default_attributes
 491 };
 492
 493 /* End diag_counters */
 494
 495 /* end of per-port file structures and support code */
 496
 497 /*
 498  * Start of per-unit (or driver, in some cases, but replicated
 499  * per unit) functions (these get a device *)
 500  */
 501 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 502                         char *buf)
 503 {
 504         struct qib_ibdev *dev =
 505                 container_of(device, struct qib_ibdev, ibdev.dev);
 506
 507         return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev);
 508 }
 509
 510 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
 511                         char *buf)
 512 {
 513         struct qib_ibdev *dev =
 514                 container_of(device, struct qib_ibdev, ibdev.dev);
 515         struct qib_devdata *dd = dd_from_dev(dev);
 516         int ret;
 517
 518         if (!dd->boardname)
 519                 ret = -EINVAL;
 520         else
 521                 ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname);
 522         return ret;
 523 }
 524
 525 static ssize_t show_version(struct device *device,
 526                             struct device_attribute *attr, char *buf)
 527 {
 528         /* The string printed here is already newline-terminated. */
 529         return scnprintf(buf, PAGE_SIZE, "%s", (char *)ib_qib_version);
 530 }
 531
 532 static ssize_t show_boardversion(struct device *device,
 533                                  struct device_attribute *attr, char *buf)
 534 {
 535         struct qib_ibdev *dev =
 536                 container_of(device, struct qib_ibdev, ibdev.dev);
 537         struct qib_devdata *dd = dd_from_dev(dev);
 538
 539         /* The string printed here is already newline-terminated. */
 540         return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion);
 541 }
 542
 543
 544 static ssize_t show_localbus_info(struct device *device,
 545                                   struct device_attribute *attr, char *buf)
 546 {
 547         struct qib_ibdev *dev =
 548                 container_of(device, struct qib_ibdev, ibdev.dev);
 549         struct qib_devdata *dd = dd_from_dev(dev);
 550
 551         /* The string printed here is already newline-terminated. */
 552         return scnprintf(buf, PAGE_SIZE, "%s", dd->lbus_info);
 553 }
 554
 555
 556 static ssize_t show_nctxts(struct device *device,
 557                            struct device_attribute *attr, char *buf)
 558 {
 559         struct qib_ibdev *dev =
 560                 container_of(device, struct qib_ibdev, ibdev.dev);
 561         struct qib_devdata *dd = dd_from_dev(dev);
 562
 563         /* Return the number of user ports (contexts) available. */
 564         /* The calculation below deals with a special case where
 565          * cfgctxts is set to 1 on a single-port board. */
 566         return scnprintf(buf, PAGE_SIZE, "%u\n",
 567                         (dd->first_user_ctxt > dd->cfgctxts) ? 0 :
 568                         (dd->cfgctxts - dd->first_user_ctxt));
 569 }
 570
 571 static ssize_t show_nfreectxts(struct device *device,
 572                            struct device_attribute *attr, char *buf)
 573 {
 574         struct qib_ibdev *dev =
 575                 container_of(device, struct qib_ibdev, ibdev.dev);
 576         struct qib_devdata *dd = dd_from_dev(dev);
 577
 578         /* Return the number of free user ports (contexts) available. */
 579         return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts);
 580 }
 581
 582 static ssize_t show_serial(struct device *device,
 583                            struct device_attribute *attr, char *buf)
 584 {
 585         struct qib_ibdev *dev =
 586                 container_of(device, struct qib_ibdev, ibdev.dev);
 587         struct qib_devdata *dd = dd_from_dev(dev);
 588
 589         buf[sizeof dd->serial] = '\0';
 590         memcpy(buf, dd->serial, sizeof dd->serial);
 591         strcat(buf, "\n");
 592         return strlen(buf);
 593 }
 594
 595 static ssize_t store_chip_reset(struct device *device,
 596                                 struct device_attribute *attr, const char *buf,
 597                                 size_t count)
 598 {
 599         struct qib_ibdev *dev =
 600                 container_of(device, struct qib_ibdev, ibdev.dev);
 601         struct qib_devdata *dd = dd_from_dev(dev);
 602         int ret;
 603
 604         if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
 605                 ret = -EINVAL;
 606                 goto bail;
 607         }
 608
 609         ret = qib_reset_device(dd->unit);
 610 bail:
 611         return ret < 0 ? ret : count;
 612 }
 613
 614 static ssize_t show_logged_errs(struct device *device,
 615                                 struct device_attribute *attr, char *buf)
 616 {
 617         struct qib_ibdev *dev =
 618                 container_of(device, struct qib_ibdev, ibdev.dev);
 619         struct qib_devdata *dd = dd_from_dev(dev);
 620         int idx, count;
 621
 622         /* force consistency with actual EEPROM */
 623         if (qib_update_eeprom_log(dd) != 0)
 624                 return -ENXIO;
 625
 626         count = 0;
 627         for (idx = 0; idx < QIB_EEP_LOG_CNT; ++idx) {
 628                 count += scnprintf(buf + count, PAGE_SIZE - count, "%d%c",
 629                                    dd->eep_st_errs[idx],
 630                                    idx == (QIB_EEP_LOG_CNT - 1) ? '\n' : ' ');
 631         }
 632
 633         return count;
 634 }
 635
 636 /*
 637  * Dump tempsense regs. in decimal, to ease shell-scripts.
 638  */
 639 static ssize_t show_tempsense(struct device *device,
 640                               struct device_attribute *attr, char *buf)
 641 {
 642         struct qib_ibdev *dev =
 643                 container_of(device, struct qib_ibdev, ibdev.dev);
 644         struct qib_devdata *dd = dd_from_dev(dev);
 645         int ret;
 646         int idx;
 647         u8 regvals[8];
 648
 649         ret = -ENXIO;
 650         for (idx = 0; idx < 8; ++idx) {
 651                 if (idx == 6)
 652                         continue;
 653                 ret = dd->f_tempsense_rd(dd, idx);
 654                 if (ret < 0)
 655                         break;
 656                 regvals[idx] = ret;
 657         }
 658         if (idx == 8)
 659                 ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n",
 660                                 *(signed char *)(regvals),
 661                                 *(signed char *)(regvals + 1),
 662                                 regvals[2], regvals[3],
 663                                 *(signed char *)(regvals + 5),
 664                                 *(signed char *)(regvals + 7));
 665         return ret;
 666 }
 667
 668 /*
 669  * end of per-unit (or driver, in some cases, but replicated
 670  * per unit) functions
 671  */
 672
 673 /* start of per-unit file structures and support code */
 674 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
 675 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
 676 static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL);
 677 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 678 static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);
 679 static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL);
 680 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
 681 static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
 682 static DEVICE_ATTR(logged_errors, S_IRUGO, show_logged_errs, NULL);
 683 static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
 684 static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL);
 685 static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
 686
 687 static struct device_attribute *qib_attributes[] = {
 688         &dev_attr_hw_rev,
 689         &dev_attr_hca_type,
 690         &dev_attr_board_id,
 691         &dev_attr_version,
 692         &dev_attr_nctxts,
 693         &dev_attr_nfreectxts,
 694         &dev_attr_serial,
 695         &dev_attr_boardversion,
 696         &dev_attr_logged_errors,
 697         &dev_attr_tempsense,
 698         &dev_attr_localbus_info,
 699         &dev_attr_chip_reset,
 700 };
 701
 702 int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
 703                           struct kobject *kobj)
 704 {
 705         struct qib_pportdata *ppd;
 706         struct qib_devdata *dd = dd_from_ibdev(ibdev);
 707         int ret;
 708
 709         if (!port_num || port_num > dd->num_pports) {
 710                 qib_dev_err(dd,
 711                         "Skipping infiniband class with invalid port %u\n",
 712                         port_num);
 713                 ret = -ENODEV;
 714                 goto bail;
 715         }
 716         ppd = &dd->pport[port_num - 1];
 717
 718         ret = kobject_init_and_add(&ppd->pport_kobj, &qib_port_ktype, kobj,
 719                                    "linkcontrol");
 720         if (ret) {
 721                 qib_dev_err(dd,
 722                         "Skipping linkcontrol sysfs info, (err %d) port %u\n",
 723                         ret, port_num);
 724                 goto bail;
 725         }
 726         kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
 727
 728         ret = kobject_init_and_add(&ppd->sl2vl_kobj, &qib_sl2vl_ktype, kobj,
 729                                    "sl2vl");
 730         if (ret) {
 731                 qib_dev_err(dd,
 732                         "Skipping sl2vl sysfs info, (err %d) port %u\n",
 733                         ret, port_num);
 734                 goto bail_link;
 735         }
 736         kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);
 737
 738         ret = kobject_init_and_add(&ppd->diagc_kobj, &qib_diagc_ktype, kobj,
 739                                    "diag_counters");
 740         if (ret) {
 741                 qib_dev_err(dd,
 742                         "Skipping diag_counters sysfs info, (err %d) port %u\n",
 743                         ret, port_num);
 744                 goto bail_sl;
 745         }
 746         kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
 747
 748         if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
 749                 return 0;
 750
 751         ret = kobject_init_and_add(&ppd->pport_cc_kobj, &qib_port_cc_ktype,
 752                                 kobj, "CCMgtA");
 753         if (ret) {
 754                 qib_dev_err(dd,
 755                  "Skipping Congestion Control sysfs info, (err %d) port %u\n",
 756                  ret, port_num);
 757                 goto bail_diagc;
 758         }
 759
 760         kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
 761
 762         ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
 763                                 &cc_setting_bin_attr);
 764         if (ret) {
 765                 qib_dev_err(dd,
 766                  "Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
 767                  ret, port_num);
 768                 goto bail_cc;
 769         }
 770
 771         ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
 772                                 &cc_table_bin_attr);
 773         if (ret) {
 774                 qib_dev_err(dd,
 775                  "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
 776                  ret, port_num);
 777                 goto bail_cc_entry_bin;
 778         }
 779
 780         qib_devinfo(dd->pcidev,
 781                 "IB%u: Congestion Control Agent enabled for port %d\n",
 782                 dd->unit, port_num);
 783
 784         return 0;
 785
 786 bail_cc_entry_bin:
 787         sysfs_remove_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
 788 bail_cc:
 789         kobject_put(&ppd->pport_cc_kobj);
 790 bail_diagc:
 791         kobject_put(&ppd->diagc_kobj);
 792 bail_sl:
 793         kobject_put(&ppd->sl2vl_kobj);
 794 bail_link:
 795         kobject_put(&ppd->pport_kobj);
 796 bail:
 797         return ret;
 798 }
 799
 800 /*
 801  * Register and create our files in /sys/class/infiniband.
 802  */
 803 int qib_verbs_register_sysfs(struct qib_devdata *dd)
 804 {
 805         struct ib_device *dev = &dd->verbs_dev.ibdev;
 806         int i, ret;
 807
 808         for (i = 0; i < ARRAY_SIZE(qib_attributes); ++i) {
 809                 ret = device_create_file(&dev->dev, qib_attributes[i]);
 810                 if (ret)
 811                         return ret;
 812         }
 813
 814         return 0;
 815 }
 816
 817 /*
 818  * Unregister and remove our files in /sys/class/infiniband.
 819  */
 820 void qib_verbs_unregister_sysfs(struct qib_devdata *dd)
 821 {
 822         struct qib_pportdata *ppd;
 823         int i;
 824
 825         for (i = 0; i < dd->num_pports; i++) {
 826                 ppd = &dd->pport[i];
 827                 if (qib_cc_table_size &&
 828                         ppd->congestion_entries_shadow) {
 829                         sysfs_remove_bin_file(&ppd->pport_cc_kobj,
 830                                 &cc_setting_bin_attr);
 831                         sysfs_remove_bin_file(&ppd->pport_cc_kobj,
 832                                 &cc_table_bin_attr);
 833                         kobject_put(&ppd->pport_cc_kobj);
 834                 }
 835                 kobject_put(&ppd->sl2vl_kobj);
 836                 kobject_put(&ppd->pport_kobj);
 837         }
 838 }