drivers/infiniband/core/sysfs.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  * $Id: sysfs.c 1349 2004-12-16 21:09:43Z roland $
  33  */
  34
  35 #include "core_priv.h"
  36
  37 #include <ib_mad.h>
  38
  39 struct ib_port {
  40         struct kobject         kobj;
  41         struct ib_device      *ibdev;
  42         struct attribute_group gid_group;
  43         struct attribute     **gid_attr;
  44         struct attribute_group pkey_group;
  45         struct attribute     **pkey_attr;
  46         u8                     port_num;
  47 };
  48
  49 struct port_attribute {
  50         struct attribute attr;
  51         ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
  52         ssize_t (*store)(struct ib_port *, struct port_attribute *,
  53                          const char *buf, size_t count);
  54 };
  55
  56 #define PORT_ATTR(_name, _mode, _show, _store) \
  57 struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)
  58
  59 #define PORT_ATTR_RO(_name) \
  60 struct port_attribute port_attr_##_name = __ATTR_RO(_name)
  61
  62 struct port_table_attribute {
  63         struct port_attribute attr;
  64         int                   index;
  65 };
  66
  67 static ssize_t port_attr_show(struct kobject *kobj,
  68                               struct attribute *attr, char *buf)
  69 {
  70         struct port_attribute *port_attr =
  71                 container_of(attr, struct port_attribute, attr);
  72         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
  73
  74         if (!port_attr->show)
  75                 return 0;
  76
  77         return port_attr->show(p, port_attr, buf);
  78 }
  79
  80 static struct sysfs_ops port_sysfs_ops = {
  81         .show = port_attr_show
  82 };
  83
  84 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
  85                           char *buf)
  86 {
  87         struct ib_port_attr attr;
  88         ssize_t ret;
  89
  90         static const char *state_name[] = {
  91                 [IB_PORT_NOP]           = "NOP",
  92                 [IB_PORT_DOWN]          = "DOWN",
  93                 [IB_PORT_INIT]          = "INIT",
  94                 [IB_PORT_ARMED]         = "ARMED",
  95                 [IB_PORT_ACTIVE]        = "ACTIVE",
  96                 [IB_PORT_ACTIVE_DEFER]  = "ACTIVE_DEFER"
  97         };
  98
  99         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 100         if (ret)
 101                 return ret;
 102
 103         return sprintf(buf, "%d: %s\n", attr.state,
 104                        attr.state >= 0 && attr.state <= ARRAY_SIZE(state_name) ?
 105                        state_name[attr.state] : "UNKNOWN");
 106 }
 107
 108 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
 109                         char *buf)
 110 {
 111         struct ib_port_attr attr;
 112         ssize_t ret;
 113
 114         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 115         if (ret)
 116                 return ret;
 117
 118         return sprintf(buf, "0x%x\n", attr.lid);
 119 }
 120
 121 static ssize_t lid_mask_count_show(struct ib_port *p,
 122                                    struct port_attribute *unused,
 123                                    char *buf)
 124 {
 125         struct ib_port_attr attr;
 126         ssize_t ret;
 127
 128         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 129         if (ret)
 130                 return ret;
 131
 132         return sprintf(buf, "%d\n", attr.lmc);
 133 }
 134
 135 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
 136                            char *buf)
 137 {
 138         struct ib_port_attr attr;
 139         ssize_t ret;
 140
 141         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 142         if (ret)
 143                 return ret;
 144
 145         return sprintf(buf, "0x%x\n", attr.sm_lid);
 146 }
 147
 148 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
 149                           char *buf)
 150 {
 151         struct ib_port_attr attr;
 152         ssize_t ret;
 153
 154         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 155         if (ret)
 156                 return ret;
 157
 158         return sprintf(buf, "%d\n", attr.sm_sl);
 159 }
 160
 161 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
 162                              char *buf)
 163 {
 164         struct ib_port_attr attr;
 165         ssize_t ret;
 166
 167         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 168         if (ret)
 169                 return ret;
 170
 171         return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
 172 }
 173
 174 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 175                          char *buf)
 176 {
 177         struct ib_port_attr attr;
 178         char *speed = "";
 179         int rate;
 180         ssize_t ret;
 181
 182         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 183         if (ret)
 184                 return ret;
 185
 186         switch (attr.active_speed) {
 187         case 2: speed = " DDR"; break;
 188         case 4: speed = " QDR"; break;
 189         }
 190
 191         rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
 192         if (rate < 0)
 193                 return -EINVAL;
 194
 195         return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
 196                        rate / 10, rate % 10 ? ".5" : "",
 197                        ib_width_enum_to_int(attr.active_width), speed);
 198 }
 199
 200 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
 201                                char *buf)
 202 {
 203         struct ib_port_attr attr;
 204
 205         ssize_t ret;
 206
 207         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 208         if (ret)
 209                 return ret;
 210
 211         switch (attr.phys_state) {
 212         case 1:  return sprintf(buf, "1: Sleep\n");
 213         case 2:  return sprintf(buf, "2: Polling\n");
 214         case 3:  return sprintf(buf, "3: Disabled\n");
 215         case 4:  return sprintf(buf, "4: PortConfigurationTraining\n");
 216         case 5:  return sprintf(buf, "5: LinkUp\n");
 217         case 6:  return sprintf(buf, "6: LinkErrorRecovery\n");
 218         case 7:  return sprintf(buf, "7: Phy Test\n");
 219         default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
 220         }
 221 }
 222
 223 static PORT_ATTR_RO(state);
 224 static PORT_ATTR_RO(lid);
 225 static PORT_ATTR_RO(lid_mask_count);
 226 static PORT_ATTR_RO(sm_lid);
 227 static PORT_ATTR_RO(sm_sl);
 228 static PORT_ATTR_RO(cap_mask);
 229 static PORT_ATTR_RO(rate);
 230 static PORT_ATTR_RO(phys_state);
 231
 232 static struct attribute *port_default_attrs[] = {
 233         &port_attr_state.attr,
 234         &port_attr_lid.attr,
 235         &port_attr_lid_mask_count.attr,
 236         &port_attr_sm_lid.attr,
 237         &port_attr_sm_sl.attr,
 238         &port_attr_cap_mask.attr,
 239         &port_attr_rate.attr,
 240         &port_attr_phys_state.attr,
 241         NULL
 242 };
 243
 244 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
 245                              char *buf)
 246 {
 247         struct port_table_attribute *tab_attr =
 248                 container_of(attr, struct port_table_attribute, attr);
 249         union ib_gid gid;
 250         ssize_t ret;
 251
 252         ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
 253         if (ret)
 254                 return ret;
 255
 256         return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
 257                        be16_to_cpu(((u16 *) gid.raw)[0]),
 258                        be16_to_cpu(((u16 *) gid.raw)[1]),
 259                        be16_to_cpu(((u16 *) gid.raw)[2]),
 260                        be16_to_cpu(((u16 *) gid.raw)[3]),
 261                        be16_to_cpu(((u16 *) gid.raw)[4]),
 262                        be16_to_cpu(((u16 *) gid.raw)[5]),
 263                        be16_to_cpu(((u16 *) gid.raw)[6]),
 264                        be16_to_cpu(((u16 *) gid.raw)[7]));
 265 }
 266
 267 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
 268                               char *buf)
 269 {
 270         struct port_table_attribute *tab_attr =
 271                 container_of(attr, struct port_table_attribute, attr);
 272         u16 pkey;
 273         ssize_t ret;
 274
 275         ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
 276         if (ret)
 277                 return ret;
 278
 279         return sprintf(buf, "0x%04x\n", pkey);
 280 }
 281
 282 #define PORT_PMA_ATTR(_name, _counter, _width, _offset)                 \
 283 struct port_table_attribute port_pma_attr_##_name = {                   \
 284         .attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),        \
 285         .index = (_offset) | ((_width) << 16) | ((_counter) << 24)      \
 286 }
 287
 288 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
 289                                 char *buf)
 290 {
 291         struct port_table_attribute *tab_attr =
 292                 container_of(attr, struct port_table_attribute, attr);
 293         int offset = tab_attr->index & 0xffff;
 294         int width  = (tab_attr->index >> 16) & 0xff;
 295         struct ib_mad *in_mad  = NULL;
 296         struct ib_mad *out_mad = NULL;
 297         ssize_t ret;
 298
 299         if (!p->ibdev->process_mad)
 300                 return sprintf(buf, "N/A (no PMA)\n");
 301
 302         in_mad  = kmalloc(sizeof *in_mad, GFP_KERNEL);
 303         out_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
 304         if (!in_mad || !out_mad) {
 305                 ret = -ENOMEM;
 306                 goto out;
 307         }
 308
 309         memset(in_mad, 0, sizeof *in_mad);
 310         in_mad->mad_hdr.base_version  = 1;
 311         in_mad->mad_hdr.mgmt_class    = IB_MGMT_CLASS_PERF_MGMT;
 312         in_mad->mad_hdr.class_version = 1;
 313         in_mad->mad_hdr.method        = IB_MGMT_METHOD_GET;
 314         in_mad->mad_hdr.attr_id       = cpu_to_be16(0x12); /* PortCounters */
 315
 316         in_mad->data[41] = p->port_num; /* PortSelect field */
 317
 318         if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
 319                  p->port_num, NULL, NULL, in_mad, out_mad) &
 320              (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
 321             (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
 322                 ret = -EINVAL;
 323                 goto out;
 324         }
 325
 326         switch (width) {
 327         case 4:
 328                 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
 329                                             (offset % 4)) & 0xf);
 330                 break;
 331         case 8:
 332                 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
 333                 break;
 334         case 16:
 335                 ret = sprintf(buf, "%u\n",
 336                               be16_to_cpup((u16 *)(out_mad->data + 40 + offset / 8)));
 337                 break;
 338         case 32:
 339                 ret = sprintf(buf, "%u\n",
 340                               be32_to_cpup((u32 *)(out_mad->data + 40 + offset / 8)));
 341                 break;
 342         default:
 343                 ret = 0;
 344         }
 345
 346 out:
 347         kfree(in_mad);
 348         kfree(out_mad);
 349
 350         return ret;
 351 }
 352
 353 static PORT_PMA_ATTR(symbol_error                   ,  0, 16,  32);
 354 static PORT_PMA_ATTR(link_error_recovery            ,  1,  8,  48);
 355 static PORT_PMA_ATTR(link_downed                    ,  2,  8,  56);
 356 static PORT_PMA_ATTR(port_rcv_errors                ,  3, 16,  64);
 357 static PORT_PMA_ATTR(port_rcv_remote_physical_errors,  4, 16,  80);
 358 static PORT_PMA_ATTR(port_rcv_switch_relay_errors   ,  5, 16,  96);
 359 static PORT_PMA_ATTR(port_xmit_discards             ,  6, 16, 112);
 360 static PORT_PMA_ATTR(port_xmit_constraint_errors    ,  7,  8, 128);
 361 static PORT_PMA_ATTR(port_rcv_constraint_errors     ,  8,  8, 136);
 362 static PORT_PMA_ATTR(local_link_integrity_errors    ,  9,  4, 152);
 363 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10,  4, 156);
 364 static PORT_PMA_ATTR(VL15_dropped                   , 11, 16, 176);
 365 static PORT_PMA_ATTR(port_xmit_data                 , 12, 32, 192);
 366 static PORT_PMA_ATTR(port_rcv_data                  , 13, 32, 224);
 367 static PORT_PMA_ATTR(port_xmit_packets              , 14, 32, 256);
 368 static PORT_PMA_ATTR(port_rcv_packets               , 15, 32, 288);
 369
 370 static struct attribute *pma_attrs[] = {
 371         &port_pma_attr_symbol_error.attr.attr,
 372         &port_pma_attr_link_error_recovery.attr.attr,
 373         &port_pma_attr_link_downed.attr.attr,
 374         &port_pma_attr_port_rcv_errors.attr.attr,
 375         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 376         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 377         &port_pma_attr_port_xmit_discards.attr.attr,
 378         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 379         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 380         &port_pma_attr_local_link_integrity_errors.attr.attr,
 381         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 382         &port_pma_attr_VL15_dropped.attr.attr,
 383         &port_pma_attr_port_xmit_data.attr.attr,
 384         &port_pma_attr_port_rcv_data.attr.attr,
 385         &port_pma_attr_port_xmit_packets.attr.attr,
 386         &port_pma_attr_port_rcv_packets.attr.attr,
 387         NULL
 388 };
 389
 390 static struct attribute_group pma_group = {
 391         .name  = "counters",
 392         .attrs  = pma_attrs
 393 };
 394
 395 static void ib_port_release(struct kobject *kobj)
 396 {
 397         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 398         struct attribute *a;
 399         int i;
 400
 401         for (i = 0; (a = p->gid_attr[i]); ++i) {
 402                 kfree(a->name);
 403                 kfree(a);
 404         }
 405
 406         for (i = 0; (a = p->pkey_attr[i]); ++i) {
 407                 kfree(a->name);
 408                 kfree(a);
 409         }
 410
 411         kfree(p->gid_attr);
 412         kfree(p);
 413 }
 414
 415 static struct kobj_type port_type = {
 416         .release       = ib_port_release,
 417         .sysfs_ops     = &port_sysfs_ops,
 418         .default_attrs = port_default_attrs
 419 };
 420
 421 static void ib_device_release(struct class_device *cdev)
 422 {
 423         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 424
 425         kfree(dev);
 426 }
 427
 428 static int ib_device_hotplug(struct class_device *cdev, char **envp,
 429                              int num_envp, char *buf, int size)
 430 {
 431         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 432         int i = 0, len = 0;
 433
 434         if (add_hotplug_env_var(envp, num_envp, &i, buf, size, &len,
 435                                 "NAME=%s", dev->name))
 436                 return -ENOMEM;
 437
 438         /*
 439          * It might be nice to pass the node GUID to hotplug, but
 440          * right now the only way to get it is to query the device
 441          * provider, and this can crash during device removal because
 442          * we are will be running after driver removal has started.
 443          * We could add a node_guid field to struct ib_device, or we
 444          * could just let the hotplug script read the node GUID from
 445          * sysfs when devices are added.
 446          */
 447
 448         envp[i] = NULL;
 449         return 0;
 450 }
 451
 452 static int alloc_group(struct attribute ***attr,
 453                        ssize_t (*show)(struct ib_port *,
 454                                        struct port_attribute *, char *buf),
 455                        int len)
 456 {
 457         struct port_table_attribute ***tab_attr =
 458                 (struct port_table_attribute ***) attr;
 459         int i;
 460         int ret;
 461
 462         *tab_attr = kmalloc((1 + len) * sizeof *tab_attr, GFP_KERNEL);
 463         if (!*tab_attr)
 464                 return -ENOMEM;
 465
 466         memset(*tab_attr, 0, (1 + len) * sizeof *tab_attr);
 467
 468         for (i = 0; i < len; ++i) {
 469                 (*tab_attr)[i] = kmalloc(sizeof *(*tab_attr)[i], GFP_KERNEL);
 470                 if (!(*tab_attr)[i]) {
 471                         ret = -ENOMEM;
 472                         goto err;
 473                 }
 474                 memset((*tab_attr)[i], 0, sizeof *(*tab_attr)[i]);
 475                 (*tab_attr)[i]->attr.attr.name = kmalloc(8, GFP_KERNEL);
 476                 if (!(*tab_attr)[i]->attr.attr.name) {
 477                         ret = -ENOMEM;
 478                         goto err;
 479                 }
 480
 481                 if (snprintf((*tab_attr)[i]->attr.attr.name, 8, "%d", i) >= 8) {
 482                         ret = -ENOMEM;
 483                         goto err;
 484                 }
 485
 486                 (*tab_attr)[i]->attr.attr.mode  = S_IRUGO;
 487                 (*tab_attr)[i]->attr.attr.owner = THIS_MODULE;
 488                 (*tab_attr)[i]->attr.show       = show;
 489                 (*tab_attr)[i]->index           = i;
 490         }
 491
 492         return 0;
 493
 494 err:
 495         for (i = 0; i < len; ++i) {
 496                 if ((*tab_attr)[i])
 497                         kfree((*tab_attr)[i]->attr.attr.name);
 498                 kfree((*tab_attr)[i]);
 499         }
 500
 501         kfree(*tab_attr);
 502
 503         return ret;
 504 }
 505
 506 static int add_port(struct ib_device *device, int port_num)
 507 {
 508         struct ib_port *p;
 509         struct ib_port_attr attr;
 510         int i;
 511         int ret;
 512
 513         ret = ib_query_port(device, port_num, &attr);
 514         if (ret)
 515                 return ret;
 516
 517         p = kmalloc(sizeof *p, GFP_KERNEL);
 518         if (!p)
 519                 return -ENOMEM;
 520         memset(p, 0, sizeof *p);
 521
 522         p->ibdev      = device;
 523         p->port_num   = port_num;
 524         p->kobj.ktype = &port_type;
 525
 526         p->kobj.parent = kobject_get(&device->ports_parent);
 527         if (!p->kobj.parent) {
 528                 ret = -EBUSY;
 529                 goto err;
 530         }
 531
 532         ret = kobject_set_name(&p->kobj, "%d", port_num);
 533         if (ret)
 534                 goto err_put;
 535
 536         ret = kobject_register(&p->kobj);
 537         if (ret)
 538                 goto err_put;
 539
 540         ret = sysfs_create_group(&p->kobj, &pma_group);
 541         if (ret)
 542                 goto err_put;
 543
 544         ret = alloc_group(&p->gid_attr, show_port_gid, attr.gid_tbl_len);
 545         if (ret)
 546                 goto err_remove_pma;
 547
 548         p->gid_group.name  = "gids";
 549         p->gid_group.attrs = p->gid_attr;
 550
 551         ret = sysfs_create_group(&p->kobj, &p->gid_group);
 552         if (ret)
 553                 goto err_free_gid;
 554
 555         ret = alloc_group(&p->pkey_attr, show_port_pkey, attr.pkey_tbl_len);
 556         if (ret)
 557                 goto err_remove_gid;
 558
 559         p->pkey_group.name  = "pkeys";
 560         p->pkey_group.attrs = p->pkey_attr;
 561
 562         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
 563         if (ret)
 564                 goto err_free_pkey;
 565
 566         list_add_tail(&p->kobj.entry, &device->port_list);
 567
 568         return 0;
 569
 570 err_free_pkey:
 571         for (i = 0; i < attr.pkey_tbl_len; ++i) {
 572                 kfree(p->pkey_attr[i]->name);
 573                 kfree(p->pkey_attr[i]);
 574         }
 575
 576         kfree(p->pkey_attr);
 577
 578 err_remove_gid:
 579         sysfs_remove_group(&p->kobj, &p->gid_group);
 580
 581 err_free_gid:
 582         for (i = 0; i < attr.gid_tbl_len; ++i) {
 583                 kfree(p->gid_attr[i]->name);
 584                 kfree(p->gid_attr[i]);
 585         }
 586
 587         kfree(p->gid_attr);
 588
 589 err_remove_pma:
 590         sysfs_remove_group(&p->kobj, &pma_group);
 591
 592 err_put:
 593         kobject_put(&device->ports_parent);
 594
 595 err:
 596         kfree(p);
 597         return ret;
 598 }
 599
 600 static ssize_t show_node_type(struct class_device *cdev, char *buf)
 601 {
 602         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 603
 604         switch (dev->node_type) {
 605         case IB_NODE_CA:     return sprintf(buf, "%d: CA\n", dev->node_type);
 606         case IB_NODE_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
 607         case IB_NODE_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
 608         default:             return sprintf(buf, "%d: <unknown>\n", dev->node_type);
 609         }
 610 }
 611
 612 static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf)
 613 {
 614         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 615         struct ib_device_attr attr;
 616         ssize_t ret;
 617
 618         ret = ib_query_device(dev, &attr);
 619         if (ret)
 620                 return ret;
 621
 622         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 623                        be16_to_cpu(((u16 *) &attr.sys_image_guid)[0]),
 624                        be16_to_cpu(((u16 *) &attr.sys_image_guid)[1]),
 625                        be16_to_cpu(((u16 *) &attr.sys_image_guid)[2]),
 626                        be16_to_cpu(((u16 *) &attr.sys_image_guid)[3]));
 627 }
 628
 629 static ssize_t show_node_guid(struct class_device *cdev, char *buf)
 630 {
 631         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 632         struct ib_device_attr attr;
 633         ssize_t ret;
 634
 635         ret = ib_query_device(dev, &attr);
 636         if (ret)
 637                 return ret;
 638
 639         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 640                        be16_to_cpu(((u16 *) &attr.node_guid)[0]),
 641                        be16_to_cpu(((u16 *) &attr.node_guid)[1]),
 642                        be16_to_cpu(((u16 *) &attr.node_guid)[2]),
 643                        be16_to_cpu(((u16 *) &attr.node_guid)[3]));
 644 }
 645
 646 static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
 647 static CLASS_DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
 648 static CLASS_DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
 649
 650 static struct class_device_attribute *ib_class_attributes[] = {
 651         &class_device_attr_node_type,
 652         &class_device_attr_sys_image_guid,
 653         &class_device_attr_node_guid
 654 };
 655
 656 static struct class ib_class = {
 657         .name    = "infiniband",
 658         .release = ib_device_release,
 659         .hotplug = ib_device_hotplug,
 660 };
 661
 662 int ib_device_register_sysfs(struct ib_device *device)
 663 {
 664         struct class_device *class_dev = &device->class_dev;
 665         int ret;
 666         int i;
 667
 668         class_dev->class      = &ib_class;
 669         class_dev->class_data = device;
 670         strlcpy(class_dev->class_id, device->name, BUS_ID_SIZE);
 671
 672         INIT_LIST_HEAD(&device->port_list);
 673
 674         ret = class_device_register(class_dev);
 675         if (ret)
 676                 goto err;
 677
 678         for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
 679                 ret = class_device_create_file(class_dev, ib_class_attributes[i]);
 680                 if (ret)
 681                         goto err_unregister;
 682         }
 683
 684         device->ports_parent.parent = kobject_get(&class_dev->kobj);
 685         if (!device->ports_parent.parent) {
 686                 ret = -EBUSY;
 687                 goto err_unregister;
 688         }
 689         ret = kobject_set_name(&device->ports_parent, "ports");
 690         if (ret)
 691                 goto err_put;
 692         ret = kobject_register(&device->ports_parent);
 693         if (ret)
 694                 goto err_put;
 695
 696         if (device->node_type == IB_NODE_SWITCH) {
 697                 ret = add_port(device, 0);
 698                 if (ret)
 699                         goto err_put;
 700         } else {
 701                 int i;
 702
 703                 for (i = 1; i <= device->phys_port_cnt; ++i) {
 704                         ret = add_port(device, i);
 705                         if (ret)
 706                                 goto err_put;
 707                 }
 708         }
 709
 710         return 0;
 711
 712 err_put:
 713         {
 714                 struct kobject *p, *t;
 715                 struct ib_port *port;
 716
 717                 list_for_each_entry_safe(p, t, &device->port_list, entry) {
 718                         list_del(&p->entry);
 719                         port = container_of(p, struct ib_port, kobj);
 720                         sysfs_remove_group(p, &pma_group);
 721                         sysfs_remove_group(p, &port->pkey_group);
 722                         sysfs_remove_group(p, &port->gid_group);
 723                         kobject_unregister(p);
 724                 }
 725         }
 726
 727         kobject_put(&class_dev->kobj);
 728
 729 err_unregister:
 730         class_device_unregister(class_dev);
 731
 732 err:
 733         return ret;
 734 }
 735
 736 void ib_device_unregister_sysfs(struct ib_device *device)
 737 {
 738         struct kobject *p, *t;
 739         struct ib_port *port;
 740
 741         list_for_each_entry_safe(p, t, &device->port_list, entry) {
 742                 list_del(&p->entry);
 743                 port = container_of(p, struct ib_port, kobj);
 744                 sysfs_remove_group(p, &pma_group);
 745                 sysfs_remove_group(p, &port->pkey_group);
 746                 sysfs_remove_group(p, &port->gid_group);
 747                 kobject_unregister(p);
 748         }
 749
 750         kobject_unregister(&device->ports_parent);
 751         class_device_unregister(&device->class_dev);
 752 }
 753
 754 int ib_sysfs_setup(void)
 755 {
 756         return class_register(&ib_class);
 757 }
 758
 759 void ib_sysfs_cleanup(void)
 760 {
 761         class_unregister(&ib_class);
 762 }