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 sysfs_emit(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         int ret;
 121         __be16 *raw;
 122
 123         ret = __mlx4_ib_query_gid(&mdev->ib_dev, port->num,
 124                                   mlx4_ib_iov_dentry->entry_num, &gid, 1);
 125         if (ret)
 126                 return ret;
 127
 128         raw = (__be16 *)gid.raw;
 129         return sysfs_emit(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
 130                           be16_to_cpu(raw[0]),
 131                           be16_to_cpu(raw[1]),
 132                           be16_to_cpu(raw[2]),
 133                           be16_to_cpu(raw[3]),
 134                           be16_to_cpu(raw[4]),
 135                           be16_to_cpu(raw[5]),
 136                           be16_to_cpu(raw[6]),
 137                           be16_to_cpu(raw[7]));
 138 }
 139
 140 static ssize_t show_phys_port_pkey(struct device *dev,
 141                                    struct device_attribute *attr,
 142                                    char *buf)
 143 {
 144         struct mlx4_ib_iov_sysfs_attr *mlx4_ib_iov_dentry =
 145                 container_of(attr, struct mlx4_ib_iov_sysfs_attr, dentry);
 146         struct mlx4_ib_iov_port *port = mlx4_ib_iov_dentry->ctx;
 147         struct mlx4_ib_dev *mdev = port->dev;
 148         u16 pkey;
 149         ssize_t ret;
 150
 151         ret = __mlx4_ib_query_pkey(&mdev->ib_dev, port->num,
 152                                    mlx4_ib_iov_dentry->entry_num, &pkey, 1);
 153         if (ret)
 154                 return ret;
 155
 156         return sysfs_emit(buf, "0x%04x\n", pkey);
 157 }
 158
 159 #define DENTRY_REMOVE(_dentry)                                          \
 160 do {                                                                    \
 161         sysfs_remove_file((_dentry)->kobj, &(_dentry)->dentry.attr);    \
 162 } while (0);
 163
 164 static int create_sysfs_entry(void *_ctx, struct mlx4_ib_iov_sysfs_attr *_dentry,
 165                               char *_name, struct kobject *_kobj,
 166                               ssize_t (*show)(struct device *dev,
 167                                               struct device_attribute *attr,
 168                                               char *buf),
 169                               ssize_t (*store)(struct device *dev,
 170                                                struct device_attribute *attr,
 171                                                const char *buf, size_t count)
 172                               )
 173 {
 174         int ret = 0;
 175         struct mlx4_ib_iov_sysfs_attr *vdentry = _dentry;
 176
 177         vdentry->ctx = _ctx;
 178         vdentry->dentry.show = show;
 179         vdentry->dentry.store = store;
 180         sysfs_attr_init(&vdentry->dentry.attr);
 181         vdentry->dentry.attr.name = vdentry->name;
 182         vdentry->dentry.attr.mode = 0;
 183         vdentry->kobj = _kobj;
 184         snprintf(vdentry->name, 15, "%s", _name);
 185
 186         if (vdentry->dentry.store)
 187                 vdentry->dentry.attr.mode |= S_IWUSR;
 188
 189         if (vdentry->dentry.show)
 190                 vdentry->dentry.attr.mode |= S_IRUGO;
 191
 192         ret = sysfs_create_file(vdentry->kobj, &vdentry->dentry.attr);
 193         if (ret) {
 194                 pr_err("failed to create %s\n", vdentry->dentry.attr.name);
 195                 vdentry->ctx = NULL;
 196                 return ret;
 197         }
 198
 199         return ret;
 200 }
 201
 202 int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
 203                 struct attribute *attr)
 204 {
 205         struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
 206         int ret;
 207
 208         ret = sysfs_create_file(port->mcgs_parent, attr);
 209         if (ret)
 210                 pr_err("failed to create %s\n", attr->name);
 211
 212         return ret;
 213 }
 214
 215 void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
 216                 struct attribute *attr)
 217 {
 218         struct mlx4_ib_iov_port *port = &device->iov_ports[port_num - 1];
 219
 220         sysfs_remove_file(port->mcgs_parent, attr);
 221 }
 222
 223 static int add_port_entries(struct mlx4_ib_dev *device, int port_num)
 224 {
 225         int i;
 226         char buff[11];
 227         struct mlx4_ib_iov_port *port = NULL;
 228         int ret = 0 ;
 229         struct ib_port_attr attr;
 230
 231         memset(&attr, 0, sizeof(attr));
 232         /* get the physical gid and pkey table sizes.*/
 233         ret = __mlx4_ib_query_port(&device->ib_dev, port_num, &attr, 1);
 234         if (ret)
 235                 goto err;
 236
 237         port = &device->iov_ports[port_num - 1];
 238         port->dev = device;
 239         port->num = port_num;
 240         /* Directory structure:
 241          * iov -
 242          *   port num -
 243          *      admin_guids
 244          *      gids (operational)
 245          *      mcg_table
 246          */
 247         port->dentr_ar = kzalloc(sizeof (struct mlx4_ib_iov_sysfs_attr_ar),
 248                                  GFP_KERNEL);
 249         if (!port->dentr_ar) {
 250                 ret = -ENOMEM;
 251                 goto err;
 252         }
 253         sprintf(buff, "%d", port_num);
 254         port->cur_port = kobject_create_and_add(buff,
 255                                  kobject_get(device->ports_parent));
 256         if (!port->cur_port) {
 257                 ret = -ENOMEM;
 258                 goto kobj_create_err;
 259         }
 260         /* admin GUIDs */
 261         port->admin_alias_parent = kobject_create_and_add("admin_guids",
 262                                                   kobject_get(port->cur_port));
 263         if (!port->admin_alias_parent) {
 264                 ret = -ENOMEM;
 265                 goto err_admin_guids;
 266         }
 267         for (i = 0 ; i < attr.gid_tbl_len; i++) {
 268                 sprintf(buff, "%d", i);
 269                 port->dentr_ar->dentries[i].entry_num = i;
 270                 ret = create_sysfs_entry(port, &port->dentr_ar->dentries[i],
 271                                           buff, port->admin_alias_parent,
 272                                           show_admin_alias_guid, store_admin_alias_guid);
 273                 if (ret)
 274                         goto err_admin_alias_parent;
 275         }
 276
 277         /* gids subdirectory (operational gids) */
 278         port->gids_parent = kobject_create_and_add("gids",
 279                                                   kobject_get(port->cur_port));
 280         if (!port->gids_parent) {
 281                 ret = -ENOMEM;
 282                 goto err_gids;
 283         }
 284
 285         for (i = 0 ; i < attr.gid_tbl_len; i++) {
 286                 sprintf(buff, "%d", i);
 287                 port->dentr_ar->dentries[attr.gid_tbl_len + i].entry_num = i;
 288                 ret = create_sysfs_entry(port,
 289                                          &port->dentr_ar->dentries[attr.gid_tbl_len + i],
 290                                          buff,
 291                                          port->gids_parent, show_port_gid, NULL);
 292                 if (ret)
 293                         goto err_gids_parent;
 294         }
 295
 296         /* physical port pkey table */
 297         port->pkeys_parent =
 298                 kobject_create_and_add("pkeys", kobject_get(port->cur_port));
 299         if (!port->pkeys_parent) {
 300                 ret = -ENOMEM;
 301                 goto err_pkeys;
 302         }
 303
 304         for (i = 0 ; i < attr.pkey_tbl_len; i++) {
 305                 sprintf(buff, "%d", i);
 306                 port->dentr_ar->dentries[2 * attr.gid_tbl_len + i].entry_num = i;
 307                 ret = create_sysfs_entry(port,
 308                                          &port->dentr_ar->dentries[2 * attr.gid_tbl_len + i],
 309                                          buff, port->pkeys_parent,
 310                                          show_phys_port_pkey, NULL);
 311                 if (ret)
 312                         goto err_pkeys_parent;
 313         }
 314
 315         /* MCGs table */
 316         port->mcgs_parent =
 317                 kobject_create_and_add("mcgs", kobject_get(port->cur_port));
 318         if (!port->mcgs_parent) {
 319                 ret = -ENOMEM;
 320                 goto err_mcgs;
 321         }
 322         return 0;
 323
 324 err_mcgs:
 325         kobject_put(port->cur_port);
 326
 327 err_pkeys_parent:
 328         kobject_put(port->pkeys_parent);
 329
 330 err_pkeys:
 331         kobject_put(port->cur_port);
 332
 333 err_gids_parent:
 334         kobject_put(port->gids_parent);
 335
 336 err_gids:
 337         kobject_put(port->cur_port);
 338
 339 err_admin_alias_parent:
 340         kobject_put(port->admin_alias_parent);
 341
 342 err_admin_guids:
 343         kobject_put(port->cur_port);
 344         kobject_put(port->cur_port); /* once more for create_and_add buff */
 345
 346 kobj_create_err:
 347         kobject_put(device->ports_parent);
 348         kfree(port->dentr_ar);
 349
 350 err:
 351         pr_err("add_port_entries FAILED: for port:%d, error: %d\n",
 352                port_num, ret);
 353         return ret;
 354 }
 355
 356 static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
 357 {
 358         /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n
 359          * with no ARI only 3 last bits are used so when the fn is higher than 8
 360          * need to add it to the dev num, so count in the last number will be
 361          * modulo 8 */
 362         snprintf(name, max, "%.8s%.2d.%d", pci_name(dev->dev->persist->pdev),
 363                  i / 8, i % 8);
 364 }
 365
 366 struct mlx4_port {
 367         struct kobject         kobj;
 368         struct mlx4_ib_dev    *dev;
 369         struct attribute_group pkey_group;
 370         struct attribute_group gid_group;
 371         struct device_attribute enable_smi_admin;
 372         struct device_attribute smi_enabled;
 373         int                    slave;
 374         u8                     port_num;
 375 };
 376
 377
 378 static void mlx4_port_release(struct kobject *kobj)
 379 {
 380         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 381         struct attribute *a;
 382         int i;
 383
 384         for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
 385                 kfree(a);
 386         kfree(p->pkey_group.attrs);
 387         for (i = 0; (a = p->gid_group.attrs[i]); ++i)
 388                 kfree(a);
 389         kfree(p->gid_group.attrs);
 390         kfree(p);
 391 }
 392
 393 struct port_attribute {
 394         struct attribute attr;
 395         ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf);
 396         ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
 397                          const char *buf, size_t count);
 398 };
 399
 400 static ssize_t port_attr_show(struct kobject *kobj,
 401                               struct attribute *attr, char *buf)
 402 {
 403         struct port_attribute *port_attr =
 404                 container_of(attr, struct port_attribute, attr);
 405         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 406
 407         if (!port_attr->show)
 408                 return -EIO;
 409         return port_attr->show(p, port_attr, buf);
 410 }
 411
 412 static ssize_t port_attr_store(struct kobject *kobj,
 413                                struct attribute *attr,
 414                                const char *buf, size_t size)
 415 {
 416         struct port_attribute *port_attr =
 417                 container_of(attr, struct port_attribute, attr);
 418         struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj);
 419
 420         if (!port_attr->store)
 421                 return -EIO;
 422         return port_attr->store(p, port_attr, buf, size);
 423 }
 424
 425 static const struct sysfs_ops port_sysfs_ops = {
 426         .show = port_attr_show,
 427         .store = port_attr_store,
 428 };
 429
 430 static struct kobj_type port_type = {
 431         .release    = mlx4_port_release,
 432         .sysfs_ops  = &port_sysfs_ops,
 433 };
 434
 435 struct port_table_attribute {
 436         struct port_attribute   attr;
 437         char                    name[8];
 438         int                     index;
 439 };
 440
 441 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
 442                               char *buf)
 443 {
 444         struct port_table_attribute *tab_attr =
 445                 container_of(attr, struct port_table_attribute, attr);
 446         struct pkey_mgt *m = &p->dev->pkeys;
 447         u8 key = m->virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index];
 448
 449         if (key >= p->dev->dev->caps.pkey_table_len[p->port_num])
 450                 return sysfs_emit(buf, "none\n");
 451         return sysfs_emit(buf, "%d\n", key);
 452 }
 453
 454 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr,
 455                                const char *buf, size_t count)
 456 {
 457         struct port_table_attribute *tab_attr =
 458                 container_of(attr, struct port_table_attribute, attr);
 459         int idx;
 460         int err;
 461
 462         /* do not allow remapping Dom0 virtual pkey table */
 463         if (p->slave == mlx4_master_func_num(p->dev->dev))
 464                 return -EINVAL;
 465
 466         if (!strncasecmp(buf, "no", 2))
 467                 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1;
 468         else if (sscanf(buf, "%i", &idx) != 1 ||
 469                  idx >= p->dev->dev->caps.pkey_table_len[p->port_num] ||
 470                  idx < 0)
 471                 return -EINVAL;
 472
 473         p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1]
 474                                     [tab_attr->index] = idx;
 475         mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num,
 476                              tab_attr->index, idx);
 477         err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num);
 478         if (err) {
 479                 pr_err("mlx4_gen_pkey_eqe failed for slave %d,"
 480                        " port %d, index %d\n", p->slave, p->port_num, idx);
 481                 return err;
 482         }
 483         return count;
 484 }
 485
 486 static ssize_t show_port_gid_idx(struct mlx4_port *p,
 487                                  struct port_attribute *attr, char *buf)
 488 {
 489         return sysfs_emit(buf, "%d\n", p->slave);
 490 }
 491
 492 static struct attribute **
 493 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *,
 494                                   struct port_attribute *, char *buf),
 495                   ssize_t (*store)(struct mlx4_port *, struct port_attribute *,
 496                                    const char *buf, size_t count),
 497                   int len)
 498 {
 499         struct attribute **tab_attr;
 500         struct port_table_attribute *element;
 501         int i;
 502
 503         tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL);
 504         if (!tab_attr)
 505                 return NULL;
 506
 507         for (i = 0; i < len; i++) {
 508                 element = kzalloc(sizeof (struct port_table_attribute),
 509                                   GFP_KERNEL);
 510                 if (!element)
 511                         goto err;
 512                 if (snprintf(element->name, sizeof (element->name),
 513                              "%d", i) >= sizeof (element->name)) {
 514                         kfree(element);
 515                         goto err;
 516                 }
 517                 sysfs_attr_init(&element->attr.attr);
 518                 element->attr.attr.name  = element->name;
 519                 if (store) {
 520                         element->attr.attr.mode  = S_IWUSR | S_IRUGO;
 521                         element->attr.store      = store;
 522                 } else
 523                         element->attr.attr.mode  = S_IRUGO;
 524
 525                 element->attr.show       = show;
 526                 element->index           = i;
 527                 tab_attr[i] = &element->attr.attr;
 528         }
 529         return tab_attr;
 530
 531 err:
 532         while (--i >= 0)
 533                 kfree(tab_attr[i]);
 534         kfree(tab_attr);
 535         return NULL;
 536 }
 537
 538 static ssize_t sysfs_show_smi_enabled(struct device *dev,
 539                                       struct device_attribute *attr, char *buf)
 540 {
 541         struct mlx4_port *p =
 542                 container_of(attr, struct mlx4_port, smi_enabled);
 543
 544         return sysfs_emit(buf, "%d\n",
 545                           !!mlx4_vf_smi_enabled(p->dev->dev, p->slave,
 546                                                 p->port_num));
 547 }
 548
 549 static ssize_t sysfs_show_enable_smi_admin(struct device *dev,
 550                                            struct device_attribute *attr,
 551                                            char *buf)
 552 {
 553         struct mlx4_port *p =
 554                 container_of(attr, struct mlx4_port, enable_smi_admin);
 555
 556         return sysfs_emit(buf, "%d\n",
 557                           !!mlx4_vf_get_enable_smi_admin(p->dev->dev, p->slave,
 558                                                          p->port_num));
 559 }
 560
 561 static ssize_t sysfs_store_enable_smi_admin(struct device *dev,
 562                                             struct device_attribute *attr,
 563                                             const char *buf, size_t count)
 564 {
 565         struct mlx4_port *p =
 566                 container_of(attr, struct mlx4_port, enable_smi_admin);
 567         int enable;
 568
 569         if (sscanf(buf, "%i", &enable) != 1 ||
 570             enable < 0 || enable > 1)
 571                 return -EINVAL;
 572
 573         if (mlx4_vf_set_enable_smi_admin(p->dev->dev, p->slave, p->port_num, enable))
 574                 return -EINVAL;
 575         return count;
 576 }
 577
 578 static int add_vf_smi_entries(struct mlx4_port *p)
 579 {
 580         int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
 581                         IB_LINK_LAYER_ETHERNET;
 582         int ret;
 583
 584         /* do not display entries if eth transport, or if master */
 585         if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
 586                 return 0;
 587
 588         sysfs_attr_init(&p->smi_enabled.attr);
 589         p->smi_enabled.show = sysfs_show_smi_enabled;
 590         p->smi_enabled.store = NULL;
 591         p->smi_enabled.attr.name = "smi_enabled";
 592         p->smi_enabled.attr.mode = 0444;
 593         ret = sysfs_create_file(&p->kobj, &p->smi_enabled.attr);
 594         if (ret) {
 595                 pr_err("failed to create smi_enabled\n");
 596                 return ret;
 597         }
 598
 599         sysfs_attr_init(&p->enable_smi_admin.attr);
 600         p->enable_smi_admin.show = sysfs_show_enable_smi_admin;
 601         p->enable_smi_admin.store = sysfs_store_enable_smi_admin;
 602         p->enable_smi_admin.attr.name = "enable_smi_admin";
 603         p->enable_smi_admin.attr.mode = 0644;
 604         ret = sysfs_create_file(&p->kobj, &p->enable_smi_admin.attr);
 605         if (ret) {
 606                 pr_err("failed to create enable_smi_admin\n");
 607                 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
 608                 return ret;
 609         }
 610         return 0;
 611 }
 612
 613 static void remove_vf_smi_entries(struct mlx4_port *p)
 614 {
 615         int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) ==
 616                         IB_LINK_LAYER_ETHERNET;
 617
 618         if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev))
 619                 return;
 620
 621         sysfs_remove_file(&p->kobj, &p->smi_enabled.attr);
 622         sysfs_remove_file(&p->kobj, &p->enable_smi_admin.attr);
 623 }
 624
 625 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave)
 626 {
 627         struct mlx4_port *p;
 628         int i;
 629         int ret;
 630         int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) ==
 631                         IB_LINK_LAYER_ETHERNET;
 632
 633         p = kzalloc(sizeof *p, GFP_KERNEL);
 634         if (!p)
 635                 return -ENOMEM;
 636
 637         p->dev = dev;
 638         p->port_num = port_num;
 639         p->slave = slave;
 640
 641         ret = kobject_init_and_add(&p->kobj, &port_type,
 642                                    kobject_get(dev->dev_ports_parent[slave]),
 643                                    "%d", port_num);
 644         if (ret)
 645                 goto err_alloc;
 646
 647         p->pkey_group.name  = "pkey_idx";
 648         p->pkey_group.attrs =
 649                 alloc_group_attrs(show_port_pkey,
 650                                   is_eth ? NULL : store_port_pkey,
 651                                   dev->dev->caps.pkey_table_len[port_num]);
 652         if (!p->pkey_group.attrs) {
 653                 ret = -ENOMEM;
 654                 goto err_alloc;
 655         }
 656
 657         ret = sysfs_create_group(&p->kobj, &p->pkey_group);
 658         if (ret)
 659                 goto err_free_pkey;
 660
 661         p->gid_group.name  = "gid_idx";
 662         p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1);
 663         if (!p->gid_group.attrs) {
 664                 ret = -ENOMEM;
 665                 goto err_free_pkey;
 666         }
 667
 668         ret = sysfs_create_group(&p->kobj, &p->gid_group);
 669         if (ret)
 670                 goto err_free_gid;
 671
 672         ret = add_vf_smi_entries(p);
 673         if (ret)
 674                 goto err_free_gid;
 675
 676         list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]);
 677         return 0;
 678
 679 err_free_gid:
 680         kfree(p->gid_group.attrs[0]);
 681         kfree(p->gid_group.attrs);
 682
 683 err_free_pkey:
 684         for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i)
 685                 kfree(p->pkey_group.attrs[i]);
 686         kfree(p->pkey_group.attrs);
 687
 688 err_alloc:
 689         kobject_put(dev->dev_ports_parent[slave]);
 690         kfree(p);
 691         return ret;
 692 }
 693
 694 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave)
 695 {
 696         char name[32];
 697         int err;
 698         int port;
 699         struct kobject *p, *t;
 700         struct mlx4_port *mport;
 701         struct mlx4_active_ports actv_ports;
 702
 703         get_name(dev, name, slave, sizeof name);
 704
 705         dev->pkeys.device_parent[slave] =
 706                 kobject_create_and_add(name, kobject_get(dev->iov_parent));
 707
 708         if (!dev->pkeys.device_parent[slave]) {
 709                 err = -ENOMEM;
 710                 goto fail_dev;
 711         }
 712
 713         INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]);
 714
 715         dev->dev_ports_parent[slave] =
 716                 kobject_create_and_add("ports",
 717                                        kobject_get(dev->pkeys.device_parent[slave]));
 718
 719         if (!dev->dev_ports_parent[slave]) {
 720                 err = -ENOMEM;
 721                 goto err_ports;
 722         }
 723
 724         actv_ports = mlx4_get_active_ports(dev->dev, slave);
 725
 726         for (port = 1; port <= dev->dev->caps.num_ports; ++port) {
 727                 if (!test_bit(port - 1, actv_ports.ports))
 728                         continue;
 729                 err = add_port(dev, port, slave);
 730                 if (err)
 731                         goto err_add;
 732         }
 733         return 0;
 734
 735 err_add:
 736         list_for_each_entry_safe(p, t,
 737                                  &dev->pkeys.pkey_port_list[slave],
 738                                  entry) {
 739                 list_del(&p->entry);
 740                 mport = container_of(p, struct mlx4_port, kobj);
 741                 sysfs_remove_group(p, &mport->pkey_group);
 742                 sysfs_remove_group(p, &mport->gid_group);
 743                 remove_vf_smi_entries(mport);
 744                 kobject_put(p);
 745         }
 746         kobject_put(dev->dev_ports_parent[slave]);
 747
 748 err_ports:
 749         kobject_put(dev->pkeys.device_parent[slave]);
 750         /* extra put for the device_parent create_and_add */
 751         kobject_put(dev->pkeys.device_parent[slave]);
 752
 753 fail_dev:
 754         kobject_put(dev->iov_parent);
 755         return err;
 756 }
 757
 758 static int register_pkey_tree(struct mlx4_ib_dev *device)
 759 {
 760         int i;
 761
 762         if (!mlx4_is_master(device->dev))
 763                 return 0;
 764
 765         for (i = 0; i <= device->dev->persist->num_vfs; ++i)
 766                 register_one_pkey_tree(device, i);
 767
 768         return 0;
 769 }
 770
 771 static void unregister_pkey_tree(struct mlx4_ib_dev *device)
 772 {
 773         int slave;
 774         struct kobject *p, *t;
 775         struct mlx4_port *port;
 776
 777         if (!mlx4_is_master(device->dev))
 778                 return;
 779
 780         for (slave = device->dev->persist->num_vfs; slave >= 0; --slave) {
 781                 list_for_each_entry_safe(p, t,
 782                                          &device->pkeys.pkey_port_list[slave],
 783                                          entry) {
 784                         list_del(&p->entry);
 785                         port = container_of(p, struct mlx4_port, kobj);
 786                         sysfs_remove_group(p, &port->pkey_group);
 787                         sysfs_remove_group(p, &port->gid_group);
 788                         remove_vf_smi_entries(port);
 789                         kobject_put(p);
 790                         kobject_put(device->dev_ports_parent[slave]);
 791                 }
 792                 kobject_put(device->dev_ports_parent[slave]);
 793                 kobject_put(device->pkeys.device_parent[slave]);
 794                 kobject_put(device->pkeys.device_parent[slave]);
 795                 kobject_put(device->iov_parent);
 796         }
 797 }
 798
 799 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev)
 800 {
 801         unsigned int i;
 802         int ret = 0;
 803
 804         if (!mlx4_is_master(dev->dev))
 805                 return 0;
 806
 807         dev->iov_parent = kobject_create_and_add("iov", &dev->ib_dev.dev.kobj);
 808         if (!dev->iov_parent) {
 809                 ret = -ENOMEM;
 810                 goto err;
 811         }
 812         dev->ports_parent =
 813                 kobject_create_and_add("ports",
 814                                        kobject_get(dev->iov_parent));
 815         if (!dev->ports_parent) {
 816                 ret = -ENOMEM;
 817                 goto err_ports;
 818         }
 819
 820         rdma_for_each_port(&dev->ib_dev, i) {
 821                 ret = add_port_entries(dev, i);
 822                 if (ret)
 823                         goto err_add_entries;
 824         }
 825
 826         ret = register_pkey_tree(dev);
 827         if (ret)
 828                 goto err_add_entries;
 829         return 0;
 830
 831 err_add_entries:
 832         kobject_put(dev->ports_parent);
 833
 834 err_ports:
 835         kobject_put(dev->iov_parent);
 836 err:
 837         pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret);
 838         return ret;
 839 }
 840
 841 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device)
 842 {
 843         struct mlx4_ib_iov_port *p;
 844         int i;
 845
 846         if (!mlx4_is_master(device->dev))
 847                 return;
 848
 849         for (i = 0; i < device->dev->caps.num_ports; i++) {
 850                 p = &device->iov_ports[i];
 851                 kobject_put(p->admin_alias_parent);
 852                 kobject_put(p->gids_parent);
 853                 kobject_put(p->pkeys_parent);
 854                 kobject_put(p->mcgs_parent);
 855                 kobject_put(p->cur_port);
 856                 kobject_put(p->cur_port);
 857                 kobject_put(p->cur_port);
 858                 kobject_put(p->cur_port);
 859                 kobject_put(p->cur_port);
 860                 kobject_put(p->dev->ports_parent);
 861                 kfree(p->dentr_ar);
 862         }
 863 }
 864
 865 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device)
 866 {
 867         unregister_alias_guid_tree(device);
 868         unregister_pkey_tree(device);
 869         kobject_put(device->ports_parent);
 870         kobject_put(device->iov_parent);
 871         kobject_put(device->iov_parent);
 872 }