drivers/infiniband/hw/mlx4/sysfs.c

   1 /*
   2  * Copyright (c) 2012 Mellanox Technologies.  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
  33 /*#include "core_priv.h"*/
  34 #include "mlx4_ib.h"
  35 #include <linux/slab.h>
  36 #include <linux/string.h>
  37 #include <linux/stat.h>
  38
  39 #include <rdma/ib_mad.h>
  40 /*show_admin_alias_guid returns the administratively assigned value of that GUID.
  41  * Values returned in buf parameter string:
  42  *      0                       - requests opensm to assign a value.
  43  *      ffffffffffffffff        - delete this entry.
  44  *      other                   - value assigned by administrator.
  45  */
  46 static ssize_t show_admin_alias_guid(struct device *dev,
  47                               struct device_attribute *attr, char *buf)
  48 {
  49         struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
  50                 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
  51         struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
  52         struct mlx4_ib_dev *mdev = port->dev;
  53         __be64 sysadmin_ag_val;
  54
  55         sysadmin_ag_val = mlx4_get_admin_guid(mdev->dev,
  56                                               mlx4_ib_iov_dentry->entry_num,
  57                                               port->num);
  58
  59         return sprintf(buf, "%llx\n", be64_to_cpu(sysadmin_ag_val));
  60 }
  61
  62 /* store_admin_alias_guid stores the (new) administratively assigned value of that GUID.
  63  * Values in buf parameter string:
  64  *      0                       - requests opensm to assign a value.
  65  *      0xffffffffffffffff      - delete this entry.
  66  *      other                   - guid value assigned by the administrator.
  67  */
  68 static ssize_t store_admin_alias_guid(struct device *dev,
  69                                       struct device_attribute *attr,
  70                                       const char *buf, size_t count)
  71 {
  72         int record_num;/*0-15*/
  73         int guid_index_in_rec; /*0 - 7*/
  74         struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
  75                 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
  76         struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
  77         struct mlx4_ib_dev *mdev = port->dev;
  78         u64 sysadmin_ag_val;
  79         unsigned long flags;
  80
  81         record_num = mlx4_ib_iov_dentry->entry_num / 8;
  82         guid_index_in_rec = mlx4_ib_iov_dentry->entry_num % 8;
  83         if (0 == record_num && 0 == guid_index_in_rec) {
  84                 pr_err("GUID 0 block 0 is RO\n");
  85                 return count;
  86         }
  87         spin_lock_irqsave(&mdev->sriov.alias_guid.ag_work_lock, flags);
  88         sscanf(buf, "%llx", &sysadmin_ag_val);
  89         *(__be64 *)&mdev->sriov.alias_guid.ports_guid[port->num - 1].
  90                 all_rec_per_port[record_num].
  91                 all_recs[GUID_REC_SIZE * guid_index_in_rec] =
  92                         cpu_to_be64(sysadmin_ag_val);
  93
  94         /* Change the state to be pending for update */
  95         mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].status
  96                 = MLX4_GUID_INFO_STATUS_IDLE ;
  97         mlx4_set_admin_guid(mdev->dev, cpu_to_be64(sysadmin_ag_val),
  98                             mlx4_ib_iov_dentry->entry_num,
  99                             port->num);
 100
 101         /* set the record index */
 102         mdev->sriov.alias_guid.ports_guid[port->num - 1].all_rec_per_port[record_num].guid_indexes
 103                 |= mlx4_ib_get_aguid_comp_mask_from_ix(guid_index_in_rec);
 104
 105         spin_unlock_irqrestore(&mdev->sriov.alias_guid.ag_work_lock, flags);
 106         mlx4_ib_init_alias_guid_work(mdev, port->num - 1);
 107
 108         return count;
 109 }
 110
 111 static ssize_t show_port_gid(struct device *dev,
 112                              struct device_attribute *attr,
 113                              char *buf)
 114 {
 115         struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
 116                 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
 117         struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
 118         struct mlx4_ib_dev *mdev = port->dev;
 119         union ib_gid gid;
 120         ssize_t ret;
 121
 122         ret = __mlx4_ib_query_gid(&mdev->ib_dev, port->num,
 123                                   mlx4_ib_iov_dentry->entry_num, &gid, 1);
 124         if (ret)
 125                 return ret;
 126         ret = sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
 127                       be16_to_cpu(((__be16 *) gid.raw)[0]),
 128                       be16_to_cpu(((__be16 *) gid.raw)[1]),
 129                       be16_to_cpu(((__be16 *) gid.raw)[2]),
 130                       be16_to_cpu(((__be16 *) gid.raw)[3]),
 131                       be16_to_cpu(((__be16 *) gid.raw)[4]),
 132                       be16_to_cpu(((__be16 *) gid.raw)[5]),
 133                       be16_to_cpu(((__be16 *) gid.raw)[6]),
 134                       be16_to_cpu(((__be16 *) gid.raw)[7]));
 135         return ret;
 136 }
 137
 138 static ssize_t show_phys_port_pkey(struct device *dev,
 139                                    struct device_attribute *attr,
 140                                    char *buf)
 141 {
 142         struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
 143                 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
 144         struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
 145         struct mlx4_ib_dev *mdev = port->dev;
 146         u16 pkey;
 147         ssize_t ret;
 148
 149         ret = __mlx4_ib_query_pkey(&mdev->ib_dev, port->num,
 150                                    mlx4_ib_iov_dentry->entry_num, &pkey, 1);
 151         if (ret)
 152                 return ret;
 153
 154         return sprintf(buf, "0x%04x\n", pkey);
 155 }
 156
 157 #define DENTRY_REMOVE(_dentry)                                          \
 158 do {                                                                    \
 159         sysfs_remove_file((_dentry)->kobj, &(_dentry)->dentry.attr);    \
 160 } while (0);
 161
 162 static int create_sysfs_entry(void *_ctx, struct mlx4_ib_iov_sysfs_attr *_dentry,
 163                               char *_name, struct kobject *_kobj,
 164                               ssize_t (*show)(struct device *dev,
 165                                               struct device_attribute *attr,
 166                                               char *buf),
 167                               ssize_t (*store)(struct device *dev,
 168                                                struct device_attribute *attr,
 169                                                const char *buf, size_t count)
 170                               )
 171 {
 172         int ret = 0;
 173         struct mlx4_ib_iov_sysfs_attr *vdentry = _dentry;
 174
 175         vdentry->ctx = _ctx;
 176         vdentry->dentry.show = show;
 177         vdentry->dentry.store = store;
 178         sysfs_attr_init(&vdentry->dentry.attr);
 179         vdentry->dentry.attr.name = vdentry->name;
 180         vdentry->dentry.attr.mode = 0;
 181         vdentry->kobj = _kobj;
 182         snprintf(vdentry->name, 15, "%s", _name);
 183
 184         if (vdentry->dentry.store)
 185                 vdentry->dentry.attr.mode |= S_IWUSR;
 186
 187         if (vdentry->dentry.show)
 188                 vdentry->dentry.attr.mode |= S_IRUGO;
 189
 190         ret = sysfs_create_file(vdentry->kobj, &vdentry->dentry.attr);
 191         if (ret) {
 192                 pr_err("failed to create %s\n", vdentry->dentry.attr.name);
 193                 vdentry->ctx = NULL;
 194                 return ret;
 195         }
 196
 197         return ret;
 198 }
 199
 200 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
 201                 struct attribute *attr)
 202 {
 203         struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
 204         int ret;
 205
 206         ret = sysfs_create_file(port->mcgs_parent, attr);
 207         if (ret)
 208                 pr_err("failed to create %s\n", attr->name);
 209
 210         return ret;
 211 }
 212
 213 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
 214                 struct attribute *attr)
 215 {
 216         struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
 217
 218         sysfs_remove_file(port->mcgs_parent, attr);
 219 }
 220
 221 static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
 222 {
 223         int i;
 224         char buff[10];
 225         struct mlx4_ib_iov_port *port = NULL;
 226         int ret = 0 ;
 227         struct ib_port_attr attr;
 228
 229         /* get the physical gid and pkey table sizes.*/
 230         ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
 231         if (ret)
 232                 goto err;
 233
 234         port = &device->iov_ports[port_num - 1];
 235         port->dev = device;
 236         port->num = port_num;
 237         /* Directory structure:
 238          * iov -
 239          *   port num -
 240          *      admin_guids
 241          *      gids (operational)
 242          *      mcg_table
 243          */
 244         port->dentr_ar = kzalloc(sizeof (struct mlx4_ib_iov_sysfs_attr_ar),
 245                                  GFP_KERNEL);
 246         if (!port->dentr_ar) {
 247                 ret = -ENOMEM;
 248                 goto err;
 249         }
 250         sprintf(buff, "%d", port_num);
 251         port->cur_port = kobject_create_and_add(buff,
 252                                  kobject_get(device->ports_parent));
 253         if (!port->cur_port) {
 254                 ret = -ENOMEM;
 255                 goto kobj_create_err;
 256         }
 257         /* admin GUIDs */
 258         port->admin_alias_parent = kobject_create_and_add("admin_guids",
 259                                                   kobject_get(port->cur_port));
 260         if (!port->admin_alias_parent) {
 261                 ret = -ENOMEM;
 262                 goto err_admin_guids;
 263         }
 264         for (i = 0 ; i < attr.gid_tbl_len; i++) {
 265                 sprintf(buff, "%d", i);
 266                 port->dentr_ar->dentries[i].entry_num = i;
 267                 ret = create_sysfs_entry(port, &port->dentr_ar->dentries[i],
 268                                           buff, port->admin_alias_parent,
 269                                           show_admin_alias_guid, store_admin_alias_guid);
 270                 if (ret)
 271                         goto err_admin_alias_parent;
 272         }
 273
 274         /* gids subdirectory (operational gids) */
 275         port->gids_parent = kobject_create_and_add("gids",
 276                                                   kobject_get(port->cur_port));
 277         if (!port->gids_parent) {
 278                 ret = -ENOMEM;
 279                 goto err_gids;
 280         }
 281
 282         for (i = 0 ; i < attr.gid_tbl_len; i++) {
 283                 sprintf(buff, "%d", i);
 284                 port->dentr_ar->dentries[attr.gid_tbl_len + i].entry_num = i;
 285                 ret = create_sysfs_entry(port,
 286                                          &port->dentr_ar->dentries[attr.gid_tbl_len + i],
 287                                          buff,
 288                                          port->gids_parent, show_port_gid, NULL);
 289                 if (ret)
 290                         goto err_gids_parent;
 291         }
 292
 293         /* physical port pkey table */
 294         port->pkeys_parent =
 295                 kobject_create_and_add("pkeys", kobject_get(port->cur_port));
 296         if (!port->pkeys_parent) {
 297                 ret = -ENOMEM;
 298                 goto err_pkeys;
 299         }
 300
 301         for (i = 0 ; i < attr.pkey_tbl_len; i++) {
 302                 sprintf(buff, "%d", i);
 303                 port->dentr_ar->dentries[2 * attr.gid_tbl_len + i].entry_num = i;
 304                 ret = create_sysfs_entry(port,
 305                                          &port->dentr_ar->dentries[2 * attr.gid_tbl_len + i],
 306                                          buff, port->pkeys_parent,
 307                                          show_phys_port_pkey, NULL);
 308                 if (ret)
 309                         goto err_pkeys_parent;
 310         }
 311
 312         /* MCGs table */
 313         port->mcgs_parent =
 314                 kobject_create_and_add("mcgs", kobject_get(port->cur_port));
 315         if (!port->mcgs_parent) {
 316                 ret = -ENOMEM;
 317                 goto err_mcgs;
 318         }
 319         return 0;
 320
 321 err_mcgs:
 322         kobject_put(port->cur_port);
 323
 324 err_pkeys_parent:
 325         kobject_put(port->pkeys_parent);
 326
 327 err_pkeys:
 328         kobject_put(port->cur_port);
 329
 330 err_gids_parent:
 331         kobject_put(port->gids_parent);
 332
 333 err_gids:
 334         kobject_put(port->cur_port);
 335
 336 err_admin_alias_parent:
 337         kobject_put(port->admin_alias_parent);
 338
 339 err_admin_guids:
 340         kobject_put(port->cur_port);
 341         kobject_put(port->cur_port); /* once more for create_and_add buff */
 342
 343 kobj_create_err:
 344         kobject_put(device->ports_parent);
 345         kfree(port->dentr_ar);
 346
 347 err:
 348         pr_err("add_port_entries FAILED: for port:%d, error: %d\n",
 349                port_num, ret);
 350         return ret;
 351 }
 352
 353 static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
 354 {
 355         /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n
 356          * with no ARI only 3 last bits are used so when the fn is higher than 8
 357          * need to add it to the dev num, so count in the last number will be
 358          * modulo 8 */
 359         snprintf(name, max, "%.8s%.2d.%d", pci_name(dev->dev->persist->pdev),
 360                  i / 8, i % 8);
 361 }
 362
 363 struct mlx4_port {
 364         struct kobject         kobj;
 365         struct mlx4_ib_dev    *dev;
 366         struct attribute_group pkey_group;
 367         struct attribute_group gid_group;
 368         struct device_attribute enable_smi_admin;
 369         struct device_attribute smi_enabled;
 370         int                    slave;
 371         u8                     port_num;
 372 };
 373
 374
 375 static void mlx4_port_release(struct kobject *kobj)
 376 {
 377         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 378         struct attribute *a;
 379         int i;
 380
 381         for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
 382                 kfree(a);
 383         kfree(p->pkey_group.attrs);
 384         for (i = 0; (a = p->gid_group.attrs[i]); ++i)
 385                 kfree(a);
 386         kfree(p->gid_group.attrs);
 387         kfree(p);
 388 }
 389
 390 struct port_attribute {
 391         struct attribute attr;
 392         ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf);
 393         ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
 394                          const char *buf, size_t count);
 395 };
 396
 397 static ssize_t port_attr_show(struct kobject *kobj,
 398                               struct attribute *attr, char *buf)
 399 {
 400         struct port_attribute *port_attr =
 401                 container_of(attr, struct port_attribute, attr);
 402         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 403
 404         if (!port_attr->show)
 405                 return -EIO;
 406         return port_attr->show(p, port_attr, buf);
 407 }
 408
 409 static ssize_t port_attr_store(struct kobject *kobj,
 410                                struct attribute *attr,
 411                                const char *buf, size_t size)
 412 {
 413         struct port_attribute *port_attr =
 414                 container_of(attr, struct port_attribute, attr);
 415         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 416
 417         if (!port_attr->store)
 418                 return -EIO;
 419         return port_attr->store(p, port_attr, buf, size);
 420 }
 421
 422 static const struct sysfs_ops port_sysfs_ops = {
 423         .show = port_attr_show,
 424         .store = port_attr_store,
 425 };
 426
 427 static struct kobj_type port_type = {
 428         .release    = mlx4_port_release,
 429         .sysfs_ops  = &port_sysfs_ops,
 430 };
 431
 432 struct port_table_attribute {
 433         struct port_attribute   attr;
 434         char                    name[8];
 435         int                     index;
 436 };
 437
 438 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
 439                               char *buf)
 440 {
 441         struct port_table_attribute *tab_attr =
 442                 container_of(attr, struct port_table_attribute, attr);
 443         ssize_t ret = -ENODEV;
 444
 445         if (p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index] >=
 446             (p->dev->dev->caps.pkey_table_len[p->port_num]))
 447                 ret = sprintf(buf, "none\n");
 448         else
 449                 ret = sprintf(buf, "%d\n",
 450                               p->dev->pkeys.virt2phys_pkey[p->slave]
 451                               [p->port_num - 1][tab_attr->index]);
 452         return ret;
 453 }
 454
 455 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
 456                                const char *buf, size_t count)
 457 {
 458         struct port_table_attribute *tab_attr =
 459                 container_of(attr, struct port_table_attribute, attr);
 460         int idx;
 461         int err;
 462
 463         /* do not allow remapping Dom0 virtual pkey table */
 464         if (p->slave == mlx4_master_func_num(p->dev->dev))
 465                 return -EINVAL;
 466
 467         if (!strncasecmp(buf, "no", 2))
 468                 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1;
 469         else if (sscanf(buf, "%i", &idx) != 1 ||
 470                  idx >= p->dev->dev->caps.pkey_table_len[p->port_num] ||
 471                  idx < 0)
 472                 return -EINVAL;
 473
 474         p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1]
 475                                     [tab_attr->index] = idx;
 476         mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num,
 477                              tab_attr->index, idx);
 478         err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num);
 479         if (err) {
 480                 pr_err("mlx4_gen_pkey_eqe failed for slave %d,"
 481                        " port %d, index %d\n", p->slave, p->port_num, idx);
 482                 return err;
 483         }
 484         return count;
 485 }
 486
 487 static ssize_t show_port_gid_idx(struct mlx4_port *p,
 488                                  struct port_attribute *attr, char *buf)
 489 {
 490         return sprintf(buf, "%d\n", p->slave);
 491 }
 492
 493 static struct attribute **
 494 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *,
 495                                   struct port_attribute *, char *buf),
 496                   ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
 497                                    const char *buf, size_t count),
 498                   int len)
 499 {
 500         struct attribute **tab_attr;
 501         struct port_table_attribute *element;
 502         int i;
 503
 504         tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL);
 505         if (!tab_attr)
 506                 return NULL;
 507
 508         for (i = 0; i < len; i++) {
 509                 element = kzalloc(sizeof (struct port_table_attribute),
 510                                   GFP_KERNEL);
 511                 if (!element)
 512                         goto err;
 513                 if (snprintf(element->name, sizeof (element->name),
 514                              "%d", i) >= sizeof (element->name)) {
 515                         kfree(element);
 516                         goto err;
 517                 }
 518                 sysfs_attr_init(&element->attr.attr);
 519                 element->attr.attr.name  = element->name;
 520                 if (store) {
 521                         element->attr.attr.mode  = S_IWUSR | S_IRUGO;
 522                         element->attr.store      = store;
 523                 } else
 524                         element->attr.attr.mode  = S_IRUGO;
 525
 526                 element->attr.show       = show;
 527                 element->index           = i;
 528                 tab_attr[i] = &element->attr.attr;
 529         }
 530         return tab_attr;
 531
 532 err:
 533         while (--i >= 0)
 534                 kfree(tab_attr[i]);
 535         kfree(tab_attr);
 536         return NULL;
 537 }
 538
 539 static ssize_t sysfs_show_smi_enabled(struct device *dev,
 540                                       struct device_attribute *attr, char *buf)
 541 {
 542         struct mlx4_port *p =
 543                 container_of(attr, struct mlx4_port, smi_enabled);
 544         ssize_t len = 0;
 545
 546         if (mlx4_vf_smi_enabled(p->dev->dev, p->slave, p->port_num))
 547                 len = sprintf(buf, "%d\n", 1);
 548         else
 549                 len = sprintf(buf, "%d\n", 0);
 550
 551         return len;
 552 }
 553
 554 static ssize_t sysfs_show_enable_smi_admin(struct device *dev,
 555                                            struct device_attribute *attr,
 556                                            char *buf)
 557 {
 558         struct mlx4_port *p =
 559                 container_of(attr, struct mlx4_port, enable_smi_admin);
 560         ssize_t len = 0;
 561
 562         if (mlx4_vf_get_enable_smi_admin(p->dev->dev, p->slave, p->port_num))
 563                 len = sprintf(buf, "%d\n", 1);
 564         else
 565                 len = sprintf(buf, "%d\n", 0);
 566
 567         return len;
 568 }
 569
 570 static ssize_t sysfs_store_enable_smi_admin(struct device *dev,
 571                                             struct device_attribute *attr,
 572                                             const char *buf, size_t count)
 573 {
 574         struct mlx4_port *p =
 575                 container_of(attr, struct mlx4_port, enable_smi_admin);
 576         int enable;
 577
 578         if (sscanf(buf, "%i", &enable) != 1 ||
 579             enable < 0 || enable > 1)
 580                 return -EINVAL;
 581
 582         if (mlx4_vf_set_enable_smi_admin(p->dev->dev, p->slave, p->port_num, enable))
 583                 return -EINVAL;
 584         return count;
 585 }
 586
 587 static int add_vf_smi_entries(struct mlx4_port *p)
 588 {
 589         int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
 590                         IB_LINK_LAYER_ETHERNET;
 591         int ret;
 592
 593         /* do not display entries if eth transport, or if master */
 594         if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
 595                 return 0;
 596
 597         sysfs_attr_init(&p->smi_enabled.attr);
 598         p->smi_enabled.show = sysfs_show_smi_enabled;
 599         p->smi_enabled.store = NULL;
 600         p->smi_enabled.attr.name = "smi_enabled";
 601         p->smi_enabled.attr.mode = 0444;
 602         ret = sysfs_create_file(&p->kobj, &p->smi_enabled.attr);
 603         if (ret) {
 604                 pr_err("failed to create smi_enabled\n");
 605                 return ret;
 606         }
 607
 608         sysfs_attr_init(&p->enable_smi_admin.attr);
 609         p->enable_smi_admin.show = sysfs_show_enable_smi_admin;
 610         p->enable_smi_admin.store = sysfs_store_enable_smi_admin;
 611         p->enable_smi_admin.attr.name = "enable_smi_admin";
 612         p->enable_smi_admin.attr.mode = 0644;
 613         ret = sysfs_create_file(&p->kobj, &p->enable_smi_admin.attr);
 614         if (ret) {
 615                 pr_err("failed to create enable_smi_admin\n");
 616                 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
 617                 return ret;
 618         }
 619         return 0;
 620 }
 621
 622 static void remove_vf_smi_entries(struct mlx4_port *p)
 623 {
 624         int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
 625                         IB_LINK_LAYER_ETHERNET;
 626
 627         if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
 628                 return;
 629
 630         sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
 631         sysfs_remove_file(&p->kobj, &p->enable_smi_admin.attr);
 632 }
 633
 634 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
 635 {
 636         struct mlx4_port *p;
 637         int i;
 638         int ret;
 639         int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) ==
 640                         IB_LINK_LAYER_ETHERNET;
 641
 642         p = kzalloc(sizeof *p, GFP_KERNEL);
 643         if (!p)
 644                 return -ENOMEM;
 645
 646         p->dev = dev;
 647         p->port_num = port_num;
 648         p->slave = slave;
 649
 650         ret = kobject_init_and_add(&p->kobj, &port_type,
 651                                    kobject_get(dev->dev_ports_parent[slave]),
 652                                    "%d", port_num);
 653         if (ret)
 654                 goto err_alloc;
 655
 656         p->pkey_group.name  = "pkey_idx";
 657         p->pkey_group.attrs =
 658                 alloc_group_attrs(show_port_pkey,
 659                                   is_eth ? NULL : store_port_pkey,
 660                                   dev->dev->caps.pkey_table_len[port_num]);
 661         if (!p->pkey_group.attrs) {
 662                 ret = -ENOMEM;
 663                 goto err_alloc;
 664         }
 665
 666         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
 667         if (ret)
 668                 goto err_free_pkey;
 669
 670         p->gid_group.name  = "gid_idx";
 671         p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1);
 672         if (!p->gid_group.attrs) {
 673                 ret = -ENOMEM;
 674                 goto err_free_pkey;
 675         }
 676
 677         ret = sysfs_create_group(&p->kobj, &p->gid_group);
 678         if (ret)
 679                 goto err_free_gid;
 680
 681         ret = add_vf_smi_entries(p);
 682         if (ret)
 683                 goto err_free_gid;
 684
 685         list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]);
 686         return 0;
 687
 688 err_free_gid:
 689         kfree(p->gid_group.attrs[0]);
 690         kfree(p->gid_group.attrs);
 691
 692 err_free_pkey:
 693         for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i)
 694                 kfree(p->pkey_group.attrs[i]);
 695         kfree(p->pkey_group.attrs);
 696
 697 err_alloc:
 698         kobject_put(dev->dev_ports_parent[slave]);
 699         kfree(p);
 700         return ret;
 701 }
 702
 703 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave)
 704 {
 705         char name[32];
 706         int err;
 707         int port;
 708         struct kobject *p, *t;
 709         struct mlx4_port *mport;
 710         struct mlx4_active_ports actv_ports;
 711
 712         get_name(dev, name, slave, sizeof name);
 713
 714         dev->pkeys.device_parent[slave] =
 715                 kobject_create_and_add(name, kobject_get(dev->iov_parent));
 716
 717         if (!dev->pkeys.device_parent[slave]) {
 718                 err = -ENOMEM;
 719                 goto fail_dev;
 720         }
 721
 722         INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]);
 723
 724         dev->dev_ports_parent[slave] =
 725                 kobject_create_and_add("ports",
 726                                        kobject_get(dev->pkeys.device_parent[slave]));
 727
 728         if (!dev->dev_ports_parent[slave]) {
 729                 err = -ENOMEM;
 730                 goto err_ports;
 731         }
 732
 733         actv_ports = mlx4_get_active_ports(dev->dev, slave);
 734
 735         for (port = 1; port <= dev->dev->caps.num_ports; ++port) {
 736                 if (!test_bit(port - 1, actv_ports.ports))
 737                         continue;
 738                 err = add_port(dev, port, slave);
 739                 if (err)
 740                         goto err_add;
 741         }
 742         return 0;
 743
 744 err_add:
 745         list_for_each_entry_safe(p, t,
 746                                  &dev->pkeys.pkey_port_list[slave],
 747                                  entry) {
 748                 list_del(&p->entry);
 749                 mport = container_of(p, struct mlx4_port, kobj);
 750                 sysfs_remove_group(p, &mport->pkey_group);
 751                 sysfs_remove_group(p, &mport->gid_group);
 752                 remove_vf_smi_entries(mport);
 753                 kobject_put(p);
 754         }
 755         kobject_put(dev->dev_ports_parent[slave]);
 756
 757 err_ports:
 758         kobject_put(dev->pkeys.device_parent[slave]);
 759         /* extra put for the device_parent create_and_add */
 760         kobject_put(dev->pkeys.device_parent[slave]);
 761
 762 fail_dev:
 763         kobject_put(dev->iov_parent);
 764         return err;
 765 }
 766
 767 static int register_pkey_tree(struct mlx4_ib_dev *device)
 768 {
 769         int i;
 770
 771         if (!mlx4_is_master(device->dev))
 772                 return 0;
 773
 774         for (i = 0; i <= device->dev->persist->num_vfs; ++i)
 775                 register_one_pkey_tree(device, i);
 776
 777         return 0;
 778 }
 779
 780 static void unregister_pkey_tree(struct mlx4_ib_dev *device)
 781 {
 782         int slave;
 783         struct kobject *p, *t;
 784         struct mlx4_port *port;
 785
 786         if (!mlx4_is_master(device->dev))
 787                 return;
 788
 789         for (slave = device->dev->persist->num_vfs; slave >= 0; --slave) {
 790                 list_for_each_entry_safe(p, t,
 791                                          &device->pkeys.pkey_port_list[slave],
 792                                          entry) {
 793                         list_del(&p->entry);
 794                         port = container_of(p, struct mlx4_port, kobj);
 795                         sysfs_remove_group(p, &port->pkey_group);
 796                         sysfs_remove_group(p, &port->gid_group);
 797                         remove_vf_smi_entries(port);
 798                         kobject_put(p);
 799                         kobject_put(device->dev_ports_parent[slave]);
 800                 }
 801                 kobject_put(device->dev_ports_parent[slave]);
 802                 kobject_put(device->pkeys.device_parent[slave]);
 803                 kobject_put(device->pkeys.device_parent[slave]);
 804                 kobject_put(device->iov_parent);
 805         }
 806 }
 807
 808 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev)
 809 {
 810         int i;
 811         int ret = 0;
 812
 813         if (!mlx4_is_master(dev->dev))
 814                 return 0;
 815
 816         dev->iov_parent =
 817                 kobject_create_and_add("iov",
 818                                        kobject_get(dev->ib_dev.ports_parent->parent));
 819         if (!dev->iov_parent) {
 820                 ret = -ENOMEM;
 821                 goto err;
 822         }
 823         dev->ports_parent =
 824                 kobject_create_and_add("ports",
 825                                        kobject_get(dev->iov_parent));
 826         if (!dev->ports_parent) {
 827                 ret = -ENOMEM;
 828                 goto err_ports;
 829         }
 830
 831         for (i = 1; i <= dev->ib_dev.phys_port_cnt; ++i) {
 832                 ret = add_port_entries(dev, i);
 833                 if (ret)
 834                         goto err_add_entries;
 835         }
 836
 837         ret = register_pkey_tree(dev);
 838         if (ret)
 839                 goto err_add_entries;
 840         return 0;
 841
 842 err_add_entries:
 843         kobject_put(dev->ports_parent);
 844
 845 err_ports:
 846         kobject_put(dev->iov_parent);
 847 err:
 848         kobject_put(dev->ib_dev.ports_parent->parent);
 849         pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret);
 850         return ret;
 851 }
 852
 853 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device)
 854 {
 855         struct mlx4_ib_iov_port *p;
 856         int i;
 857
 858         if (!mlx4_is_master(device->dev))
 859                 return;
 860
 861         for (i = 0; i < device->dev->caps.num_ports; i++) {
 862                 p = &device->iov_ports[i];
 863                 kobject_put(p->admin_alias_parent);
 864                 kobject_put(p->gids_parent);
 865                 kobject_put(p->pkeys_parent);
 866                 kobject_put(p->mcgs_parent);
 867                 kobject_put(p->cur_port);
 868                 kobject_put(p->cur_port);
 869                 kobject_put(p->cur_port);
 870                 kobject_put(p->cur_port);
 871                 kobject_put(p->cur_port);
 872                 kobject_put(p->dev->ports_parent);
 873                 kfree(p->dentr_ar);
 874         }
 875 }
 876
 877 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device)
 878 {
 879         unregister_alias_guid_tree(device);
 880         unregister_pkey_tree(device);
 881         kobject_put(device->ports_parent);
 882         kobject_put(device->iov_parent);
 883         kobject_put(device->iov_parent);
 884         kobject_put(device->ib_dev.ports_parent->parent);
 885 }