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/fs.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", (long long)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 unsigned long long 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 char base_name[9]; 356 357 /* pci_name format is: bus:dev:func -> xxxx:yy:zz.n */ 358 strlcpy(name, pci_name(dev->dev->persist->pdev), max); 359 strncpy(base_name, name, 8); /*till xxxx:yy:*/ 360 base_name[8] = '\0'; 361 /* with no ARI only 3 last bits are used so when the fn is higher than 8 362 * need to add it to the dev num, so count in the last number will be 363 * modulo 8 */ 364 sprintf(name, "%s%.2d.%d", base_name, (i/8), (i%8)); 365 } 366 367 struct mlx4_port { 368 struct kobject kobj; 369 struct mlx4_ib_dev *dev; 370 struct attribute_group pkey_group; 371 struct attribute_group gid_group; 372 struct device_attribute enable_smi_admin; 373 struct device_attribute smi_enabled; 374 int slave; 375 u8 port_num; 376 }; 377 378 379 static void mlx4_port_release(struct kobject *kobj) 380 { 381 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj); 382 struct attribute *a; 383 int i; 384 385 for (i = 0; (a = p->pkey_group.attrs[i]); ++i) 386 kfree(a); 387 kfree(p->pkey_group.attrs); 388 for (i = 0; (a = p->gid_group.attrs[i]); ++i) 389 kfree(a); 390 kfree(p->gid_group.attrs); 391 kfree(p); 392 } 393 394 struct port_attribute { 395 struct attribute attr; 396 ssize_t (*show)(struct mlx4_port *, struct port_attribute *, char *buf); 397 ssize_t (*store)(struct mlx4_port *, struct port_attribute *, 398 const char *buf, size_t count); 399 }; 400 401 static ssize_t port_attr_show(struct kobject *kobj, 402 struct attribute *attr, char *buf) 403 { 404 struct port_attribute *port_attr = 405 container_of(attr, struct port_attribute, attr); 406 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj); 407 408 if (!port_attr->show) 409 return -EIO; 410 return port_attr->show(p, port_attr, buf); 411 } 412 413 static ssize_t port_attr_store(struct kobject *kobj, 414 struct attribute *attr, 415 const char *buf, size_t size) 416 { 417 struct port_attribute *port_attr = 418 container_of(attr, struct port_attribute, attr); 419 struct mlx4_port *p = container_of(kobj, struct mlx4_port, kobj); 420 421 if (!port_attr->store) 422 return -EIO; 423 return port_attr->store(p, port_attr, buf, size); 424 } 425 426 static const struct sysfs_ops port_sysfs_ops = { 427 .show = port_attr_show, 428 .store = port_attr_store, 429 }; 430 431 static struct kobj_type port_type = { 432 .release = mlx4_port_release, 433 .sysfs_ops = &port_sysfs_ops, 434 }; 435 436 struct port_table_attribute { 437 struct port_attribute attr; 438 char name[8]; 439 int index; 440 }; 441 442 static ssize_t show_port_pkey(struct mlx4_port *p, struct port_attribute *attr, 443 char *buf) 444 { 445 struct port_table_attribute *tab_attr = 446 container_of(attr, struct port_table_attribute, attr); 447 ssize_t ret = -ENODEV; 448 449 if (p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1][tab_attr->index] >= 450 (p->dev->dev->caps.pkey_table_len[p->port_num])) 451 ret = sprintf(buf, "none\n"); 452 else 453 ret = sprintf(buf, "%d\n", 454 p->dev->pkeys.virt2phys_pkey[p->slave] 455 [p->port_num - 1][tab_attr->index]); 456 return ret; 457 } 458 459 static ssize_t store_port_pkey(struct mlx4_port *p, struct port_attribute *attr, 460 const char *buf, size_t count) 461 { 462 struct port_table_attribute *tab_attr = 463 container_of(attr, struct port_table_attribute, attr); 464 int idx; 465 int err; 466 467 /* do not allow remapping Dom0 virtual pkey table */ 468 if (p->slave == mlx4_master_func_num(p->dev->dev)) 469 return -EINVAL; 470 471 if (!strncasecmp(buf, "no", 2)) 472 idx = p->dev->dev->phys_caps.pkey_phys_table_len[p->port_num] - 1; 473 else if (sscanf(buf, "%i", &idx) != 1 || 474 idx >= p->dev->dev->caps.pkey_table_len[p->port_num] || 475 idx < 0) 476 return -EINVAL; 477 478 p->dev->pkeys.virt2phys_pkey[p->slave][p->port_num - 1] 479 [tab_attr->index] = idx; 480 mlx4_sync_pkey_table(p->dev->dev, p->slave, p->port_num, 481 tab_attr->index, idx); 482 err = mlx4_gen_pkey_eqe(p->dev->dev, p->slave, p->port_num); 483 if (err) { 484 pr_err("mlx4_gen_pkey_eqe failed for slave %d," 485 " port %d, index %d\n", p->slave, p->port_num, idx); 486 return err; 487 } 488 return count; 489 } 490 491 static ssize_t show_port_gid_idx(struct mlx4_port *p, 492 struct port_attribute *attr, char *buf) 493 { 494 return sprintf(buf, "%d\n", p->slave); 495 } 496 497 static struct attribute ** 498 alloc_group_attrs(ssize_t (*show)(struct mlx4_port *, 499 struct port_attribute *, char *buf), 500 ssize_t (*store)(struct mlx4_port *, struct port_attribute *, 501 const char *buf, size_t count), 502 int len) 503 { 504 struct attribute **tab_attr; 505 struct port_table_attribute *element; 506 int i; 507 508 tab_attr = kcalloc(1 + len, sizeof (struct attribute *), GFP_KERNEL); 509 if (!tab_attr) 510 return NULL; 511 512 for (i = 0; i < len; i++) { 513 element = kzalloc(sizeof (struct port_table_attribute), 514 GFP_KERNEL); 515 if (!element) 516 goto err; 517 if (snprintf(element->name, sizeof (element->name), 518 "%d", i) >= sizeof (element->name)) { 519 kfree(element); 520 goto err; 521 } 522 sysfs_attr_init(&element->attr.attr); 523 element->attr.attr.name = element->name; 524 if (store) { 525 element->attr.attr.mode = S_IWUSR | S_IRUGO; 526 element->attr.store = store; 527 } else 528 element->attr.attr.mode = S_IRUGO; 529 530 element->attr.show = show; 531 element->index = i; 532 tab_attr[i] = &element->attr.attr; 533 } 534 return tab_attr; 535 536 err: 537 while (--i >= 0) 538 kfree(tab_attr[i]); 539 kfree(tab_attr); 540 return NULL; 541 } 542 543 static ssize_t sysfs_show_smi_enabled(struct device *dev, 544 struct device_attribute *attr, char *buf) 545 { 546 struct mlx4_port *p = 547 container_of(attr, struct mlx4_port, smi_enabled); 548 ssize_t len = 0; 549 550 if (mlx4_vf_smi_enabled(p->dev->dev, p->slave, p->port_num)) 551 len = sprintf(buf, "%d\n", 1); 552 else 553 len = sprintf(buf, "%d\n", 0); 554 555 return len; 556 } 557 558 static ssize_t sysfs_show_enable_smi_admin(struct device *dev, 559 struct device_attribute *attr, 560 char *buf) 561 { 562 struct mlx4_port *p = 563 container_of(attr, struct mlx4_port, enable_smi_admin); 564 ssize_t len = 0; 565 566 if (mlx4_vf_get_enable_smi_admin(p->dev->dev, p->slave, p->port_num)) 567 len = sprintf(buf, "%d\n", 1); 568 else 569 len = sprintf(buf, "%d\n", 0); 570 571 return len; 572 } 573 574 static ssize_t sysfs_store_enable_smi_admin(struct device *dev, 575 struct device_attribute *attr, 576 const char *buf, size_t count) 577 { 578 struct mlx4_port *p = 579 container_of(attr, struct mlx4_port, enable_smi_admin); 580 int enable; 581 582 if (sscanf(buf, "%i", &enable) != 1 || 583 enable < 0 || enable > 1) 584 return -EINVAL; 585 586 if (mlx4_vf_set_enable_smi_admin(p->dev->dev, p->slave, p->port_num, enable)) 587 return -EINVAL; 588 return count; 589 } 590 591 static int add_vf_smi_entries(struct mlx4_port *p) 592 { 593 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) == 594 IB_LINK_LAYER_ETHERNET; 595 int ret; 596 597 /* do not display entries if eth transport, or if master */ 598 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev)) 599 return 0; 600 601 sysfs_attr_init(&p->smi_enabled.attr); 602 p->smi_enabled.show = sysfs_show_smi_enabled; 603 p->smi_enabled.store = NULL; 604 p->smi_enabled.attr.name = "smi_enabled"; 605 p->smi_enabled.attr.mode = 0444; 606 ret = sysfs_create_file(&p->kobj, &p->smi_enabled.attr); 607 if (ret) { 608 pr_err("failed to create smi_enabled\n"); 609 return ret; 610 } 611 612 sysfs_attr_init(&p->enable_smi_admin.attr); 613 p->enable_smi_admin.show = sysfs_show_enable_smi_admin; 614 p->enable_smi_admin.store = sysfs_store_enable_smi_admin; 615 p->enable_smi_admin.attr.name = "enable_smi_admin"; 616 p->enable_smi_admin.attr.mode = 0644; 617 ret = sysfs_create_file(&p->kobj, &p->enable_smi_admin.attr); 618 if (ret) { 619 pr_err("failed to create enable_smi_admin\n"); 620 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr); 621 return ret; 622 } 623 return 0; 624 } 625 626 static void remove_vf_smi_entries(struct mlx4_port *p) 627 { 628 int is_eth = rdma_port_get_link_layer(&p->dev->ib_dev, p->port_num) == 629 IB_LINK_LAYER_ETHERNET; 630 631 if (is_eth || p->slave == mlx4_master_func_num(p->dev->dev)) 632 return; 633 634 sysfs_remove_file(&p->kobj, &p->smi_enabled.attr); 635 sysfs_remove_file(&p->kobj, &p->enable_smi_admin.attr); 636 } 637 638 static int add_port(struct mlx4_ib_dev *dev, int port_num, int slave) 639 { 640 struct mlx4_port *p; 641 int i; 642 int ret; 643 int is_eth = rdma_port_get_link_layer(&dev->ib_dev, port_num) == 644 IB_LINK_LAYER_ETHERNET; 645 646 p = kzalloc(sizeof *p, GFP_KERNEL); 647 if (!p) 648 return -ENOMEM; 649 650 p->dev = dev; 651 p->port_num = port_num; 652 p->slave = slave; 653 654 ret = kobject_init_and_add(&p->kobj, &port_type, 655 kobject_get(dev->dev_ports_parent[slave]), 656 "%d", port_num); 657 if (ret) 658 goto err_alloc; 659 660 p->pkey_group.name = "pkey_idx"; 661 p->pkey_group.attrs = 662 alloc_group_attrs(show_port_pkey, 663 is_eth ? NULL : store_port_pkey, 664 dev->dev->caps.pkey_table_len[port_num]); 665 if (!p->pkey_group.attrs) { 666 ret = -ENOMEM; 667 goto err_alloc; 668 } 669 670 ret = sysfs_create_group(&p->kobj, &p->pkey_group); 671 if (ret) 672 goto err_free_pkey; 673 674 p->gid_group.name = "gid_idx"; 675 p->gid_group.attrs = alloc_group_attrs(show_port_gid_idx, NULL, 1); 676 if (!p->gid_group.attrs) { 677 ret = -ENOMEM; 678 goto err_free_pkey; 679 } 680 681 ret = sysfs_create_group(&p->kobj, &p->gid_group); 682 if (ret) 683 goto err_free_gid; 684 685 ret = add_vf_smi_entries(p); 686 if (ret) 687 goto err_free_gid; 688 689 list_add_tail(&p->kobj.entry, &dev->pkeys.pkey_port_list[slave]); 690 return 0; 691 692 err_free_gid: 693 kfree(p->gid_group.attrs[0]); 694 kfree(p->gid_group.attrs); 695 696 err_free_pkey: 697 for (i = 0; i < dev->dev->caps.pkey_table_len[port_num]; ++i) 698 kfree(p->pkey_group.attrs[i]); 699 kfree(p->pkey_group.attrs); 700 701 err_alloc: 702 kobject_put(dev->dev_ports_parent[slave]); 703 kfree(p); 704 return ret; 705 } 706 707 static int register_one_pkey_tree(struct mlx4_ib_dev *dev, int slave) 708 { 709 char name[32]; 710 int err; 711 int port; 712 struct kobject *p, *t; 713 struct mlx4_port *mport; 714 struct mlx4_active_ports actv_ports; 715 716 get_name(dev, name, slave, sizeof name); 717 718 dev->pkeys.device_parent[slave] = 719 kobject_create_and_add(name, kobject_get(dev->iov_parent)); 720 721 if (!dev->pkeys.device_parent[slave]) { 722 err = -ENOMEM; 723 goto fail_dev; 724 } 725 726 INIT_LIST_HEAD(&dev->pkeys.pkey_port_list[slave]); 727 728 dev->dev_ports_parent[slave] = 729 kobject_create_and_add("ports", 730 kobject_get(dev->pkeys.device_parent[slave])); 731 732 if (!dev->dev_ports_parent[slave]) { 733 err = -ENOMEM; 734 goto err_ports; 735 } 736 737 actv_ports = mlx4_get_active_ports(dev->dev, slave); 738 739 for (port = 1; port <= dev->dev->caps.num_ports; ++port) { 740 if (!test_bit(port - 1, actv_ports.ports)) 741 continue; 742 err = add_port(dev, port, slave); 743 if (err) 744 goto err_add; 745 } 746 return 0; 747 748 err_add: 749 list_for_each_entry_safe(p, t, 750 &dev->pkeys.pkey_port_list[slave], 751 entry) { 752 list_del(&p->entry); 753 mport = container_of(p, struct mlx4_port, kobj); 754 sysfs_remove_group(p, &mport->pkey_group); 755 sysfs_remove_group(p, &mport->gid_group); 756 remove_vf_smi_entries(mport); 757 kobject_put(p); 758 } 759 kobject_put(dev->dev_ports_parent[slave]); 760 761 err_ports: 762 kobject_put(dev->pkeys.device_parent[slave]); 763 /* extra put for the device_parent create_and_add */ 764 kobject_put(dev->pkeys.device_parent[slave]); 765 766 fail_dev: 767 kobject_put(dev->iov_parent); 768 return err; 769 } 770 771 static int register_pkey_tree(struct mlx4_ib_dev *device) 772 { 773 int i; 774 775 if (!mlx4_is_master(device->dev)) 776 return 0; 777 778 for (i = 0; i <= device->dev->persist->num_vfs; ++i) 779 register_one_pkey_tree(device, i); 780 781 return 0; 782 } 783 784 static void unregister_pkey_tree(struct mlx4_ib_dev *device) 785 { 786 int slave; 787 struct kobject *p, *t; 788 struct mlx4_port *port; 789 790 if (!mlx4_is_master(device->dev)) 791 return; 792 793 for (slave = device->dev->persist->num_vfs; slave >= 0; --slave) { 794 list_for_each_entry_safe(p, t, 795 &device->pkeys.pkey_port_list[slave], 796 entry) { 797 list_del(&p->entry); 798 port = container_of(p, struct mlx4_port, kobj); 799 sysfs_remove_group(p, &port->pkey_group); 800 sysfs_remove_group(p, &port->gid_group); 801 remove_vf_smi_entries(port); 802 kobject_put(p); 803 kobject_put(device->dev_ports_parent[slave]); 804 } 805 kobject_put(device->dev_ports_parent[slave]); 806 kobject_put(device->pkeys.device_parent[slave]); 807 kobject_put(device->pkeys.device_parent[slave]); 808 kobject_put(device->iov_parent); 809 } 810 } 811 812 int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *dev) 813 { 814 int i; 815 int ret = 0; 816 817 if (!mlx4_is_master(dev->dev)) 818 return 0; 819 820 dev->iov_parent = 821 kobject_create_and_add("iov", 822 kobject_get(dev->ib_dev.ports_parent->parent)); 823 if (!dev->iov_parent) { 824 ret = -ENOMEM; 825 goto err; 826 } 827 dev->ports_parent = 828 kobject_create_and_add("ports", 829 kobject_get(dev->iov_parent)); 830 if (!dev->ports_parent) { 831 ret = -ENOMEM; 832 goto err_ports; 833 } 834 835 for (i = 1; i <= dev->ib_dev.phys_port_cnt; ++i) { 836 ret = add_port_entries(dev, i); 837 if (ret) 838 goto err_add_entries; 839 } 840 841 ret = register_pkey_tree(dev); 842 if (ret) 843 goto err_add_entries; 844 return 0; 845 846 err_add_entries: 847 kobject_put(dev->ports_parent); 848 849 err_ports: 850 kobject_put(dev->iov_parent); 851 err: 852 kobject_put(dev->ib_dev.ports_parent->parent); 853 pr_err("mlx4_ib_device_register_sysfs error (%d)\n", ret); 854 return ret; 855 } 856 857 static void unregister_alias_guid_tree(struct mlx4_ib_dev *device) 858 { 859 struct mlx4_ib_iov_port *p; 860 int i; 861 862 if (!mlx4_is_master(device->dev)) 863 return; 864 865 for (i = 0; i < device->dev->caps.num_ports; i++) { 866 p = &device->iov_ports[i]; 867 kobject_put(p->admin_alias_parent); 868 kobject_put(p->gids_parent); 869 kobject_put(p->pkeys_parent); 870 kobject_put(p->mcgs_parent); 871 kobject_put(p->cur_port); 872 kobject_put(p->cur_port); 873 kobject_put(p->cur_port); 874 kobject_put(p->cur_port); 875 kobject_put(p->cur_port); 876 kobject_put(p->dev->ports_parent); 877 kfree(p->dentr_ar); 878 } 879 } 880 881 void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device) 882 { 883 unregister_alias_guid_tree(device); 884 unregister_pkey_tree(device); 885 kobject_put(device->ports_parent); 886 kobject_put(device->iov_parent); 887 kobject_put(device->iov_parent); 888 kobject_put(device->ib_dev.ports_parent->parent); 889 } 890