drivers/infiniband/core/sysfs.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
   4  * Copyright (c) 2005 Sun Microsystems, 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  * $Id: sysfs.c 1349 2004-12-16 21:09:43Z roland $
  35  */
  36
  37 #include "core_priv.h"
  38
  39 #include <rdma/ib_mad.h>
  40
  41 struct ib_port {
  42         struct kobject         kobj;
  43         struct ib_device      *ibdev;
  44         struct attribute_group gid_group;
  45         struct attribute_group pkey_group;
  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         char                    name[8];
  65         int                     index;
  66 };
  67
  68 static ssize_t port_attr_show(struct kobject *kobj,
  69                               struct attribute *attr, char *buf)
  70 {
  71         struct port_attribute *port_attr =
  72                 container_of(attr, struct port_attribute, attr);
  73         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
  74
  75         if (!port_attr->show)
  76                 return -EIO;
  77
  78         return port_attr->show(p, port_attr, buf);
  79 }
  80
  81 static struct sysfs_ops port_sysfs_ops = {
  82         .show = port_attr_show
  83 };
  84
  85 static ssize_t state_show(struct ib_port *p, struct port_attribute *unused,
  86                           char *buf)
  87 {
  88         struct ib_port_attr attr;
  89         ssize_t ret;
  90
  91         static const char *state_name[] = {
  92                 [IB_PORT_NOP]           = "NOP",
  93                 [IB_PORT_DOWN]          = "DOWN",
  94                 [IB_PORT_INIT]          = "INIT",
  95                 [IB_PORT_ARMED]         = "ARMED",
  96                 [IB_PORT_ACTIVE]        = "ACTIVE",
  97                 [IB_PORT_ACTIVE_DEFER]  = "ACTIVE_DEFER"
  98         };
  99
 100         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 101         if (ret)
 102                 return ret;
 103
 104         return sprintf(buf, "%d: %s\n", attr.state,
 105                        attr.state >= 0 && attr.state <= ARRAY_SIZE(state_name) ?
 106                        state_name[attr.state] : "UNKNOWN");
 107 }
 108
 109 static ssize_t lid_show(struct ib_port *p, struct port_attribute *unused,
 110                         char *buf)
 111 {
 112         struct ib_port_attr attr;
 113         ssize_t ret;
 114
 115         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 116         if (ret)
 117                 return ret;
 118
 119         return sprintf(buf, "0x%x\n", attr.lid);
 120 }
 121
 122 static ssize_t lid_mask_count_show(struct ib_port *p,
 123                                    struct port_attribute *unused,
 124                                    char *buf)
 125 {
 126         struct ib_port_attr attr;
 127         ssize_t ret;
 128
 129         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 130         if (ret)
 131                 return ret;
 132
 133         return sprintf(buf, "%d\n", attr.lmc);
 134 }
 135
 136 static ssize_t sm_lid_show(struct ib_port *p, struct port_attribute *unused,
 137                            char *buf)
 138 {
 139         struct ib_port_attr attr;
 140         ssize_t ret;
 141
 142         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 143         if (ret)
 144                 return ret;
 145
 146         return sprintf(buf, "0x%x\n", attr.sm_lid);
 147 }
 148
 149 static ssize_t sm_sl_show(struct ib_port *p, struct port_attribute *unused,
 150                           char *buf)
 151 {
 152         struct ib_port_attr attr;
 153         ssize_t ret;
 154
 155         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 156         if (ret)
 157                 return ret;
 158
 159         return sprintf(buf, "%d\n", attr.sm_sl);
 160 }
 161
 162 static ssize_t cap_mask_show(struct ib_port *p, struct port_attribute *unused,
 163                              char *buf)
 164 {
 165         struct ib_port_attr attr;
 166         ssize_t ret;
 167
 168         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 169         if (ret)
 170                 return ret;
 171
 172         return sprintf(buf, "0x%08x\n", attr.port_cap_flags);
 173 }
 174
 175 static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 176                          char *buf)
 177 {
 178         struct ib_port_attr attr;
 179         char *speed = "";
 180         int rate;
 181         ssize_t ret;
 182
 183         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 184         if (ret)
 185                 return ret;
 186
 187         switch (attr.active_speed) {
 188         case 2: speed = " DDR"; break;
 189         case 4: speed = " QDR"; break;
 190         }
 191
 192         rate = 25 * ib_width_enum_to_int(attr.active_width) * attr.active_speed;
 193         if (rate < 0)
 194                 return -EINVAL;
 195
 196         return sprintf(buf, "%d%s Gb/sec (%dX%s)\n",
 197                        rate / 10, rate % 10 ? ".5" : "",
 198                        ib_width_enum_to_int(attr.active_width), speed);
 199 }
 200
 201 static ssize_t phys_state_show(struct ib_port *p, struct port_attribute *unused,
 202                                char *buf)
 203 {
 204         struct ib_port_attr attr;
 205
 206         ssize_t ret;
 207
 208         ret = ib_query_port(p->ibdev, p->port_num, &attr);
 209         if (ret)
 210                 return ret;
 211
 212         switch (attr.phys_state) {
 213         case 1:  return sprintf(buf, "1: Sleep\n");
 214         case 2:  return sprintf(buf, "2: Polling\n");
 215         case 3:  return sprintf(buf, "3: Disabled\n");
 216         case 4:  return sprintf(buf, "4: PortConfigurationTraining\n");
 217         case 5:  return sprintf(buf, "5: LinkUp\n");
 218         case 6:  return sprintf(buf, "6: LinkErrorRecovery\n");
 219         case 7:  return sprintf(buf, "7: Phy Test\n");
 220         default: return sprintf(buf, "%d: <unknown>\n", attr.phys_state);
 221         }
 222 }
 223
 224 static PORT_ATTR_RO(state);
 225 static PORT_ATTR_RO(lid);
 226 static PORT_ATTR_RO(lid_mask_count);
 227 static PORT_ATTR_RO(sm_lid);
 228 static PORT_ATTR_RO(sm_sl);
 229 static PORT_ATTR_RO(cap_mask);
 230 static PORT_ATTR_RO(rate);
 231 static PORT_ATTR_RO(phys_state);
 232
 233 static struct attribute *port_default_attrs[] = {
 234         &port_attr_state.attr,
 235         &port_attr_lid.attr,
 236         &port_attr_lid_mask_count.attr,
 237         &port_attr_sm_lid.attr,
 238         &port_attr_sm_sl.attr,
 239         &port_attr_cap_mask.attr,
 240         &port_attr_rate.attr,
 241         &port_attr_phys_state.attr,
 242         NULL
 243 };
 244
 245 static ssize_t show_port_gid(struct ib_port *p, struct port_attribute *attr,
 246                              char *buf)
 247 {
 248         struct port_table_attribute *tab_attr =
 249                 container_of(attr, struct port_table_attribute, attr);
 250         union ib_gid gid;
 251         ssize_t ret;
 252
 253         ret = ib_query_gid(p->ibdev, p->port_num, tab_attr->index, &gid);
 254         if (ret)
 255                 return ret;
 256
 257         return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
 258                        be16_to_cpu(((__be16 *) gid.raw)[0]),
 259                        be16_to_cpu(((__be16 *) gid.raw)[1]),
 260                        be16_to_cpu(((__be16 *) gid.raw)[2]),
 261                        be16_to_cpu(((__be16 *) gid.raw)[3]),
 262                        be16_to_cpu(((__be16 *) gid.raw)[4]),
 263                        be16_to_cpu(((__be16 *) gid.raw)[5]),
 264                        be16_to_cpu(((__be16 *) gid.raw)[6]),
 265                        be16_to_cpu(((__be16 *) gid.raw)[7]));
 266 }
 267
 268 static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
 269                               char *buf)
 270 {
 271         struct port_table_attribute *tab_attr =
 272                 container_of(attr, struct port_table_attribute, attr);
 273         u16 pkey;
 274         ssize_t ret;
 275
 276         ret = ib_query_pkey(p->ibdev, p->port_num, tab_attr->index, &pkey);
 277         if (ret)
 278                 return ret;
 279
 280         return sprintf(buf, "0x%04x\n", pkey);
 281 }
 282
 283 #define PORT_PMA_ATTR(_name, _counter, _width, _offset)                 \
 284 struct port_table_attribute port_pma_attr_##_name = {                   \
 285         .attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),        \
 286         .index = (_offset) | ((_width) << 16) | ((_counter) << 24)      \
 287 }
 288
 289 static ssize_t show_pma_counter(struct ib_port *p, struct port_attribute *attr,
 290                                 char *buf)
 291 {
 292         struct port_table_attribute *tab_attr =
 293                 container_of(attr, struct port_table_attribute, attr);
 294         int offset = tab_attr->index & 0xffff;
 295         int width  = (tab_attr->index >> 16) & 0xff;
 296         struct ib_mad *in_mad  = NULL;
 297         struct ib_mad *out_mad = NULL;
 298         ssize_t ret;
 299
 300         if (!p->ibdev->process_mad)
 301                 return sprintf(buf, "N/A (no PMA)\n");
 302
 303         in_mad  = kmalloc(sizeof *in_mad, GFP_KERNEL);
 304         out_mad = kmalloc(sizeof *in_mad, GFP_KERNEL);
 305         if (!in_mad || !out_mad) {
 306                 ret = -ENOMEM;
 307                 goto out;
 308         }
 309
 310         memset(in_mad, 0, sizeof *in_mad);
 311         in_mad->mad_hdr.base_version  = 1;
 312         in_mad->mad_hdr.mgmt_class    = IB_MGMT_CLASS_PERF_MGMT;
 313         in_mad->mad_hdr.class_version = 1;
 314         in_mad->mad_hdr.method        = IB_MGMT_METHOD_GET;
 315         in_mad->mad_hdr.attr_id       = cpu_to_be16(0x12); /* PortCounters */
 316
 317         in_mad->data[41] = p->port_num; /* PortSelect field */
 318
 319         if ((p->ibdev->process_mad(p->ibdev, IB_MAD_IGNORE_MKEY,
 320                  p->port_num, NULL, NULL, in_mad, out_mad) &
 321              (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) !=
 322             (IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY)) {
 323                 ret = -EINVAL;
 324                 goto out;
 325         }
 326
 327         switch (width) {
 328         case 4:
 329                 ret = sprintf(buf, "%u\n", (out_mad->data[40 + offset / 8] >>
 330                                             (offset % 4)) & 0xf);
 331                 break;
 332         case 8:
 333                 ret = sprintf(buf, "%u\n", out_mad->data[40 + offset / 8]);
 334                 break;
 335         case 16:
 336                 ret = sprintf(buf, "%u\n",
 337                               be16_to_cpup((__be16 *)(out_mad->data + 40 + offset / 8)));
 338                 break;
 339         case 32:
 340                 ret = sprintf(buf, "%u\n",
 341                               be32_to_cpup((__be32 *)(out_mad->data + 40 + offset / 8)));
 342                 break;
 343         default:
 344                 ret = 0;
 345         }
 346
 347 out:
 348         kfree(in_mad);
 349         kfree(out_mad);
 350
 351         return ret;
 352 }
 353
 354 static PORT_PMA_ATTR(symbol_error                   ,  0, 16,  32);
 355 static PORT_PMA_ATTR(link_error_recovery            ,  1,  8,  48);
 356 static PORT_PMA_ATTR(link_downed                    ,  2,  8,  56);
 357 static PORT_PMA_ATTR(port_rcv_errors                ,  3, 16,  64);
 358 static PORT_PMA_ATTR(port_rcv_remote_physical_errors,  4, 16,  80);
 359 static PORT_PMA_ATTR(port_rcv_switch_relay_errors   ,  5, 16,  96);
 360 static PORT_PMA_ATTR(port_xmit_discards             ,  6, 16, 112);
 361 static PORT_PMA_ATTR(port_xmit_constraint_errors    ,  7,  8, 128);
 362 static PORT_PMA_ATTR(port_rcv_constraint_errors     ,  8,  8, 136);
 363 static PORT_PMA_ATTR(local_link_integrity_errors    ,  9,  4, 152);
 364 static PORT_PMA_ATTR(excessive_buffer_overrun_errors, 10,  4, 156);
 365 static PORT_PMA_ATTR(VL15_dropped                   , 11, 16, 176);
 366 static PORT_PMA_ATTR(port_xmit_data                 , 12, 32, 192);
 367 static PORT_PMA_ATTR(port_rcv_data                  , 13, 32, 224);
 368 static PORT_PMA_ATTR(port_xmit_packets              , 14, 32, 256);
 369 static PORT_PMA_ATTR(port_rcv_packets               , 15, 32, 288);
 370
 371 static struct attribute *pma_attrs[] = {
 372         &port_pma_attr_symbol_error.attr.attr,
 373         &port_pma_attr_link_error_recovery.attr.attr,
 374         &port_pma_attr_link_downed.attr.attr,
 375         &port_pma_attr_port_rcv_errors.attr.attr,
 376         &port_pma_attr_port_rcv_remote_physical_errors.attr.attr,
 377         &port_pma_attr_port_rcv_switch_relay_errors.attr.attr,
 378         &port_pma_attr_port_xmit_discards.attr.attr,
 379         &port_pma_attr_port_xmit_constraint_errors.attr.attr,
 380         &port_pma_attr_port_rcv_constraint_errors.attr.attr,
 381         &port_pma_attr_local_link_integrity_errors.attr.attr,
 382         &port_pma_attr_excessive_buffer_overrun_errors.attr.attr,
 383         &port_pma_attr_VL15_dropped.attr.attr,
 384         &port_pma_attr_port_xmit_data.attr.attr,
 385         &port_pma_attr_port_rcv_data.attr.attr,
 386         &port_pma_attr_port_xmit_packets.attr.attr,
 387         &port_pma_attr_port_rcv_packets.attr.attr,
 388         NULL
 389 };
 390
 391 static struct attribute_group pma_group = {
 392         .name  = "counters",
 393         .attrs  = pma_attrs
 394 };
 395
 396 static void ib_port_release(struct kobject *kobj)
 397 {
 398         struct ib_port *p = container_of(kobj, struct ib_port, kobj);
 399         struct attribute *a;
 400         int i;
 401
 402         for (i = 0; (a = p->gid_group.attrs[i]); ++i)
 403                 kfree(a);
 404
 405         kfree(p->gid_group.attrs);
 406
 407         for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
 408                 kfree(a);
 409
 410         kfree(p->pkey_group.attrs);
 411
 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 struct attribute **
 453 alloc_group_attrs(ssize_t (*show)(struct ib_port *,
 454                                   struct port_attribute *, char *buf),
 455                   int len)
 456 {
 457         struct attribute **tab_attr;
 458         struct port_table_attribute *element;
 459         int i;
 460
 461         tab_attr = kcalloc(1 + len, sizeof(struct attribute *), GFP_KERNEL);
 462         if (!tab_attr)
 463                 return NULL;
 464
 465         for (i = 0; i < len; i++) {
 466                 element = kcalloc(1, sizeof(struct port_table_attribute),
 467                                   GFP_KERNEL);
 468                 if (!element)
 469                         goto err;
 470
 471                 if (snprintf(element->name, sizeof(element->name),
 472                              "%d", i) >= sizeof(element->name))
 473                         goto err;
 474
 475                 element->attr.attr.name  = element->name;
 476                 element->attr.attr.mode  = S_IRUGO;
 477                 element->attr.attr.owner = THIS_MODULE;
 478                 element->attr.show       = show;
 479                 element->index           = i;
 480
 481                 tab_attr[i] = &element->attr.attr;
 482         }
 483
 484         return tab_attr;
 485
 486 err:
 487         while (--i >= 0)
 488                 kfree(tab_attr[i]);
 489         kfree(tab_attr);
 490         return NULL;
 491 }
 492
 493 static int add_port(struct ib_device *device, int port_num)
 494 {
 495         struct ib_port *p;
 496         struct ib_port_attr attr;
 497         int i;
 498         int ret;
 499
 500         ret = ib_query_port(device, port_num, &attr);
 501         if (ret)
 502                 return ret;
 503
 504         p = kmalloc(sizeof *p, GFP_KERNEL);
 505         if (!p)
 506                 return -ENOMEM;
 507         memset(p, 0, sizeof *p);
 508
 509         p->ibdev      = device;
 510         p->port_num   = port_num;
 511         p->kobj.ktype = &port_type;
 512
 513         p->kobj.parent = kobject_get(&device->ports_parent);
 514         if (!p->kobj.parent) {
 515                 ret = -EBUSY;
 516                 goto err;
 517         }
 518
 519         ret = kobject_set_name(&p->kobj, "%d", port_num);
 520         if (ret)
 521                 goto err_put;
 522
 523         ret = kobject_register(&p->kobj);
 524         if (ret)
 525                 goto err_put;
 526
 527         ret = sysfs_create_group(&p->kobj, &pma_group);
 528         if (ret)
 529                 goto err_put;
 530
 531         p->gid_group.name  = "gids";
 532         p->gid_group.attrs = alloc_group_attrs(show_port_gid, attr.gid_tbl_len);
 533         if (!p->gid_group.attrs)
 534                 goto err_remove_pma;
 535
 536         ret = sysfs_create_group(&p->kobj, &p->gid_group);
 537         if (ret)
 538                 goto err_free_gid;
 539
 540         p->pkey_group.name  = "pkeys";
 541         p->pkey_group.attrs = alloc_group_attrs(show_port_pkey,
 542                                                 attr.pkey_tbl_len);
 543         if (!p->pkey_group.attrs)
 544                 goto err_remove_gid;
 545
 546         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
 547         if (ret)
 548                 goto err_free_pkey;
 549
 550         list_add_tail(&p->kobj.entry, &device->port_list);
 551
 552         return 0;
 553
 554 err_free_pkey:
 555         for (i = 0; i < attr.pkey_tbl_len; ++i)
 556                 kfree(p->pkey_group.attrs[i]);
 557
 558         kfree(p->pkey_group.attrs);
 559
 560 err_remove_gid:
 561         sysfs_remove_group(&p->kobj, &p->gid_group);
 562
 563 err_free_gid:
 564         for (i = 0; i < attr.gid_tbl_len; ++i)
 565                 kfree(p->gid_group.attrs[i]);
 566
 567         kfree(p->gid_group.attrs);
 568
 569 err_remove_pma:
 570         sysfs_remove_group(&p->kobj, &pma_group);
 571
 572 err_put:
 573         kobject_put(&device->ports_parent);
 574
 575 err:
 576         kfree(p);
 577         return ret;
 578 }
 579
 580 static ssize_t show_node_type(struct class_device *cdev, char *buf)
 581 {
 582         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 583
 584         switch (dev->node_type) {
 585         case IB_NODE_CA:     return sprintf(buf, "%d: CA\n", dev->node_type);
 586         case IB_NODE_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
 587         case IB_NODE_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
 588         default:             return sprintf(buf, "%d: <unknown>\n", dev->node_type);
 589         }
 590 }
 591
 592 static ssize_t show_sys_image_guid(struct class_device *cdev, char *buf)
 593 {
 594         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 595         struct ib_device_attr attr;
 596         ssize_t ret;
 597
 598         ret = ib_query_device(dev, &attr);
 599         if (ret)
 600                 return ret;
 601
 602         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 603                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[0]),
 604                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[1]),
 605                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[2]),
 606                        be16_to_cpu(((__be16 *) &attr.sys_image_guid)[3]));
 607 }
 608
 609 static ssize_t show_node_guid(struct class_device *cdev, char *buf)
 610 {
 611         struct ib_device *dev = container_of(cdev, struct ib_device, class_dev);
 612         struct ib_device_attr attr;
 613         ssize_t ret;
 614
 615         ret = ib_query_device(dev, &attr);
 616         if (ret)
 617                 return ret;
 618
 619         return sprintf(buf, "%04x:%04x:%04x:%04x\n",
 620                        be16_to_cpu(((__be16 *) &attr.node_guid)[0]),
 621                        be16_to_cpu(((__be16 *) &attr.node_guid)[1]),
 622                        be16_to_cpu(((__be16 *) &attr.node_guid)[2]),
 623                        be16_to_cpu(((__be16 *) &attr.node_guid)[3]));
 624 }
 625
 626 static CLASS_DEVICE_ATTR(node_type, S_IRUGO, show_node_type, NULL);
 627 static CLASS_DEVICE_ATTR(sys_image_guid, S_IRUGO, show_sys_image_guid, NULL);
 628 static CLASS_DEVICE_ATTR(node_guid, S_IRUGO, show_node_guid, NULL);
 629
 630 static struct class_device_attribute *ib_class_attributes[] = {
 631         &class_device_attr_node_type,
 632         &class_device_attr_sys_image_guid,
 633         &class_device_attr_node_guid
 634 };
 635
 636 static struct class ib_class = {
 637         .name    = "infiniband",
 638         .release = ib_device_release,
 639         .hotplug = ib_device_hotplug,
 640 };
 641
 642 int ib_device_register_sysfs(struct ib_device *device)
 643 {
 644         struct class_device *class_dev = &device->class_dev;
 645         int ret;
 646         int i;
 647
 648         class_dev->class      = &ib_class;
 649         class_dev->class_data = device;
 650         strlcpy(class_dev->class_id, device->name, BUS_ID_SIZE);
 651
 652         INIT_LIST_HEAD(&device->port_list);
 653
 654         ret = class_device_register(class_dev);
 655         if (ret)
 656                 goto err;
 657
 658         for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i) {
 659                 ret = class_device_create_file(class_dev, ib_class_attributes[i]);
 660                 if (ret)
 661                         goto err_unregister;
 662         }
 663
 664         device->ports_parent.parent = kobject_get(&class_dev->kobj);
 665         if (!device->ports_parent.parent) {
 666                 ret = -EBUSY;
 667                 goto err_unregister;
 668         }
 669         ret = kobject_set_name(&device->ports_parent, "ports");
 670         if (ret)
 671                 goto err_put;
 672         ret = kobject_register(&device->ports_parent);
 673         if (ret)
 674                 goto err_put;
 675
 676         if (device->node_type == IB_NODE_SWITCH) {
 677                 ret = add_port(device, 0);
 678                 if (ret)
 679                         goto err_put;
 680         } else {
 681                 int i;
 682
 683                 for (i = 1; i <= device->phys_port_cnt; ++i) {
 684                         ret = add_port(device, i);
 685                         if (ret)
 686                                 goto err_put;
 687                 }
 688         }
 689
 690         return 0;
 691
 692 err_put:
 693         {
 694                 struct kobject *p, *t;
 695                 struct ib_port *port;
 696
 697                 list_for_each_entry_safe(p, t, &device->port_list, entry) {
 698                         list_del(&p->entry);
 699                         port = container_of(p, struct ib_port, kobj);
 700                         sysfs_remove_group(p, &pma_group);
 701                         sysfs_remove_group(p, &port->pkey_group);
 702                         sysfs_remove_group(p, &port->gid_group);
 703                         kobject_unregister(p);
 704                 }
 705         }
 706
 707         kobject_put(&class_dev->kobj);
 708
 709 err_unregister:
 710         class_device_unregister(class_dev);
 711
 712 err:
 713         return ret;
 714 }
 715
 716 void ib_device_unregister_sysfs(struct ib_device *device)
 717 {
 718         struct kobject *p, *t;
 719         struct ib_port *port;
 720
 721         list_for_each_entry_safe(p, t, &device->port_list, entry) {
 722                 list_del(&p->entry);
 723                 port = container_of(p, struct ib_port, kobj);
 724                 sysfs_remove_group(p, &pma_group);
 725                 sysfs_remove_group(p, &port->pkey_group);
 726                 sysfs_remove_group(p, &port->gid_group);
 727                 kobject_unregister(p);
 728         }
 729
 730         kobject_unregister(&device->ports_parent);
 731         class_device_unregister(&device->class_dev);
 732 }
 733
 734 int ib_sysfs_setup(void)
 735 {
 736         return class_register(&ib_class);
 737 }
 738
 739 void ib_sysfs_cleanup(void)
 740 {
 741         class_unregister(&ib_class);
 742 }