1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * zfcp device driver 4 * 5 * sysfs attributes. 6 * 7 * Copyright IBM Corp. 2008, 2020 8 */ 9 10 #define KMSG_COMPONENT "zfcp" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/slab.h> 14 #include "zfcp_diag.h" 15 #include "zfcp_ext.h" 16 17 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 18 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 19 _show, _store) 20 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 21 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 22 struct device_attribute *at,\ 23 char *buf) \ 24 { \ 25 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ 26 \ 27 return sprintf(buf, _format, _value); \ 28 } \ 29 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 30 zfcp_sysfs_##_feat##_##_name##_show, NULL); 31 32 #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ 33 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 34 struct device_attribute *at,\ 35 char *buf) \ 36 { \ 37 return sprintf(buf, _format, _value); \ 38 } \ 39 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 40 zfcp_sysfs_##_feat##_##_name##_show, NULL); 41 42 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ 43 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 44 struct device_attribute *at,\ 45 char *buf) \ 46 { \ 47 struct ccw_device *cdev = to_ccwdev(dev); \ 48 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ 49 int i; \ 50 \ 51 if (!adapter) \ 52 return -ENODEV; \ 53 \ 54 i = sprintf(buf, _format, _value); \ 55 zfcp_ccw_adapter_put(adapter); \ 56 return i; \ 57 } \ 58 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ 59 zfcp_sysfs_adapter_##_name##_show, NULL); 60 61 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); 62 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", 63 (unsigned long long) adapter->peer_wwnn); 64 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", 65 (unsigned long long) adapter->peer_wwpn); 66 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); 67 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); 68 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); 69 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); 70 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & 71 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 72 73 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 74 atomic_read(&port->status)); 75 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 76 (atomic_read(&port->status) & 77 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 78 ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0); 79 80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 81 zfcp_unit_sdev_status(unit)); 82 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 83 (zfcp_unit_sdev_status(unit) & 84 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 85 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 86 (zfcp_unit_sdev_status(unit) & 87 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 88 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); 89 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); 90 91 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, 92 struct device_attribute *attr, 93 char *buf) 94 { 95 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 96 97 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 98 return sprintf(buf, "1\n"); 99 100 return sprintf(buf, "0\n"); 101 } 102 103 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, 104 struct device_attribute *attr, 105 const char *buf, size_t count) 106 { 107 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 108 unsigned long val; 109 110 if (kstrtoul(buf, 0, &val) || val != 0) 111 return -EINVAL; 112 113 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); 114 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); 115 zfcp_erp_wait(port->adapter); 116 117 return count; 118 } 119 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 120 zfcp_sysfs_port_failed_show, 121 zfcp_sysfs_port_failed_store); 122 123 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, 124 struct device_attribute *attr, 125 char *buf) 126 { 127 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 128 struct scsi_device *sdev; 129 unsigned int status, failed = 1; 130 131 sdev = zfcp_unit_sdev(unit); 132 if (sdev) { 133 status = atomic_read(&sdev_to_zfcp(sdev)->status); 134 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 135 scsi_device_put(sdev); 136 } 137 138 return sprintf(buf, "%d\n", failed); 139 } 140 141 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, 142 struct device_attribute *attr, 143 const char *buf, size_t count) 144 { 145 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 146 unsigned long val; 147 struct scsi_device *sdev; 148 149 if (kstrtoul(buf, 0, &val) || val != 0) 150 return -EINVAL; 151 152 sdev = zfcp_unit_sdev(unit); 153 if (sdev) { 154 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 155 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 156 "syufai2"); 157 zfcp_erp_wait(unit->port->adapter); 158 } else 159 zfcp_unit_scsi_scan(unit); 160 161 return count; 162 } 163 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 164 zfcp_sysfs_unit_failed_show, 165 zfcp_sysfs_unit_failed_store); 166 167 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, 168 struct device_attribute *attr, 169 char *buf) 170 { 171 struct ccw_device *cdev = to_ccwdev(dev); 172 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 173 int i; 174 175 if (!adapter) 176 return -ENODEV; 177 178 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 179 i = sprintf(buf, "1\n"); 180 else 181 i = sprintf(buf, "0\n"); 182 183 zfcp_ccw_adapter_put(adapter); 184 return i; 185 } 186 187 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, 188 struct device_attribute *attr, 189 const char *buf, size_t count) 190 { 191 struct ccw_device *cdev = to_ccwdev(dev); 192 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 193 unsigned long val; 194 int retval = 0; 195 196 if (!adapter) 197 return -ENODEV; 198 199 if (kstrtoul(buf, 0, &val) || val != 0) { 200 retval = -EINVAL; 201 goto out; 202 } 203 204 zfcp_erp_adapter_reset_sync(adapter, "syafai2"); 205 out: 206 zfcp_ccw_adapter_put(adapter); 207 return retval ? retval : (ssize_t) count; 208 } 209 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 210 zfcp_sysfs_adapter_failed_show, 211 zfcp_sysfs_adapter_failed_store); 212 213 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 214 struct device_attribute *attr, 215 const char *buf, size_t count) 216 { 217 struct ccw_device *cdev = to_ccwdev(dev); 218 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 219 int retval = 0; 220 221 if (!adapter) 222 return -ENODEV; 223 224 /* 225 * If `scsi_host` is missing, we can't schedule `scan_work`, as it 226 * makes use of the corresponding fc_host object. But this state is 227 * only possible if xconfig/xport data has never completed yet, 228 * and we couldn't successfully scan for ports anyway. 229 */ 230 if (adapter->scsi_host == NULL) { 231 retval = -ENODEV; 232 goto out; 233 } 234 235 /* 236 * Users wish is our command: immediately schedule and flush a 237 * worker to conduct a synchronous port scan, that is, neither 238 * a random delay nor a rate limit is applied here. 239 */ 240 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); 241 flush_delayed_work(&adapter->scan_work); 242 out: 243 zfcp_ccw_adapter_put(adapter); 244 return retval ? retval : (ssize_t) count; 245 } 246 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 247 zfcp_sysfs_port_rescan_store); 248 249 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 250 251 static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port) 252 { 253 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 254 atomic_set(&port->units, -1); 255 } 256 257 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port) 258 { 259 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 260 return atomic_read(&port->units) == -1; 261 } 262 263 static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port) 264 { 265 struct zfcp_adapter *const adapter = port->adapter; 266 unsigned long flags; 267 struct scsi_device *sdev; 268 bool in_use = true; 269 270 mutex_lock(&zfcp_sysfs_port_units_mutex); 271 if (atomic_read(&port->units) > 0) 272 goto unlock_port_units_mutex; /* zfcp_unit(s) under port */ 273 274 spin_lock_irqsave(adapter->scsi_host->host_lock, flags); 275 __shost_for_each_device(sdev, adapter->scsi_host) { 276 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev); 277 278 if (sdev->sdev_state == SDEV_DEL || 279 sdev->sdev_state == SDEV_CANCEL) 280 continue; 281 if (zsdev->port != port) 282 continue; 283 /* alive scsi_device under port of interest */ 284 goto unlock_host_lock; 285 } 286 287 /* port is about to be removed, so no more unit_add or slave_alloc */ 288 zfcp_sysfs_port_set_removing(port); 289 in_use = false; 290 291 unlock_host_lock: 292 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags); 293 unlock_port_units_mutex: 294 mutex_unlock(&zfcp_sysfs_port_units_mutex); 295 return in_use; 296 } 297 298 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 299 struct device_attribute *attr, 300 const char *buf, size_t count) 301 { 302 struct ccw_device *cdev = to_ccwdev(dev); 303 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 304 struct zfcp_port *port; 305 u64 wwpn; 306 int retval = -EINVAL; 307 308 if (!adapter) 309 return -ENODEV; 310 311 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) 312 goto out; 313 314 port = zfcp_get_port_by_wwpn(adapter, wwpn); 315 if (!port) 316 goto out; 317 else 318 retval = 0; 319 320 if (zfcp_sysfs_port_in_use(port)) { 321 retval = -EBUSY; 322 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ 323 goto out; 324 } 325 326 write_lock_irq(&adapter->port_list_lock); 327 list_del(&port->list); 328 write_unlock_irq(&adapter->port_list_lock); 329 330 put_device(&port->dev); 331 332 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 333 device_unregister(&port->dev); 334 out: 335 zfcp_ccw_adapter_put(adapter); 336 return retval ? retval : (ssize_t) count; 337 } 338 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 339 zfcp_sysfs_port_remove_store); 340 341 static ssize_t 342 zfcp_sysfs_adapter_diag_max_age_show(struct device *dev, 343 struct device_attribute *attr, char *buf) 344 { 345 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 346 ssize_t rc; 347 348 if (!adapter) 349 return -ENODEV; 350 351 /* ceil(log(2^64 - 1) / log(10)) = 20 */ 352 rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age); 353 354 zfcp_ccw_adapter_put(adapter); 355 return rc; 356 } 357 358 static ssize_t 359 zfcp_sysfs_adapter_diag_max_age_store(struct device *dev, 360 struct device_attribute *attr, 361 const char *buf, size_t count) 362 { 363 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 364 unsigned long max_age; 365 ssize_t rc; 366 367 if (!adapter) 368 return -ENODEV; 369 370 rc = kstrtoul(buf, 10, &max_age); 371 if (rc != 0) 372 goto out; 373 374 adapter->diagnostics->max_age = max_age; 375 376 rc = count; 377 out: 378 zfcp_ccw_adapter_put(adapter); 379 return rc; 380 } 381 static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644, 382 zfcp_sysfs_adapter_diag_max_age_show, 383 zfcp_sysfs_adapter_diag_max_age_store); 384 385 static ssize_t zfcp_sysfs_adapter_fc_security_show( 386 struct device *dev, struct device_attribute *attr, char *buf) 387 { 388 struct ccw_device *cdev = to_ccwdev(dev); 389 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 390 unsigned int status; 391 int i; 392 393 if (!adapter) 394 return -ENODEV; 395 396 /* 397 * Adapter status COMMON_OPEN implies xconf data and xport data 398 * was done. Adapter FC Endpoint Security capability remains 399 * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link 400 * down). 401 */ 402 status = atomic_read(&adapter->status); 403 if (0 == (status & ZFCP_STATUS_COMMON_OPEN)) 404 i = sprintf(buf, "unknown\n"); 405 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 406 i = sprintf(buf, "unsupported\n"); 407 else { 408 i = zfcp_fsf_scnprint_fc_security( 409 buf, PAGE_SIZE - 1, adapter->fc_security_algorithms, 410 ZFCP_FSF_PRINT_FMT_LIST); 411 i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); 412 } 413 414 zfcp_ccw_adapter_put(adapter); 415 return i; 416 } 417 static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO, 418 zfcp_sysfs_adapter_fc_security_show, 419 NULL); 420 421 static struct attribute *zfcp_adapter_attrs[] = { 422 &dev_attr_adapter_failed.attr, 423 &dev_attr_adapter_in_recovery.attr, 424 &dev_attr_adapter_port_remove.attr, 425 &dev_attr_adapter_port_rescan.attr, 426 &dev_attr_adapter_peer_wwnn.attr, 427 &dev_attr_adapter_peer_wwpn.attr, 428 &dev_attr_adapter_peer_d_id.attr, 429 &dev_attr_adapter_card_version.attr, 430 &dev_attr_adapter_lic_version.attr, 431 &dev_attr_adapter_status.attr, 432 &dev_attr_adapter_hardware_version.attr, 433 &dev_attr_adapter_diag_max_age.attr, 434 &dev_attr_adapter_fc_security.attr, 435 NULL 436 }; 437 438 struct attribute_group zfcp_sysfs_adapter_attrs = { 439 .attrs = zfcp_adapter_attrs, 440 }; 441 442 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 443 struct device_attribute *attr, 444 const char *buf, size_t count) 445 { 446 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 447 u64 fcp_lun; 448 int retval; 449 450 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 451 return -EINVAL; 452 453 retval = zfcp_unit_add(port, fcp_lun); 454 if (retval) 455 return retval; 456 457 return count; 458 } 459 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 460 461 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 462 struct device_attribute *attr, 463 const char *buf, size_t count) 464 { 465 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 466 u64 fcp_lun; 467 468 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 469 return -EINVAL; 470 471 if (zfcp_unit_remove(port, fcp_lun)) 472 return -EINVAL; 473 474 return count; 475 } 476 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 477 478 static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev, 479 struct device_attribute *attr, 480 char *buf) 481 { 482 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 483 struct zfcp_adapter *adapter = port->adapter; 484 unsigned int status = atomic_read(&port->status); 485 int i; 486 487 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 488 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 489 0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) || 490 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) || 491 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED)) 492 i = sprintf(buf, "unknown\n"); 493 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 494 i = sprintf(buf, "unsupported\n"); 495 else { 496 i = zfcp_fsf_scnprint_fc_security( 497 buf, PAGE_SIZE - 1, port->connection_info, 498 ZFCP_FSF_PRINT_FMT_SINGLEITEM); 499 i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); 500 } 501 502 return i; 503 } 504 static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO, 505 zfcp_sysfs_port_fc_security_show, 506 NULL); 507 508 static struct attribute *zfcp_port_attrs[] = { 509 &dev_attr_unit_add.attr, 510 &dev_attr_unit_remove.attr, 511 &dev_attr_port_failed.attr, 512 &dev_attr_port_in_recovery.attr, 513 &dev_attr_port_status.attr, 514 &dev_attr_port_access_denied.attr, 515 &dev_attr_port_fc_security.attr, 516 NULL 517 }; 518 static struct attribute_group zfcp_port_attr_group = { 519 .attrs = zfcp_port_attrs, 520 }; 521 const struct attribute_group *zfcp_port_attr_groups[] = { 522 &zfcp_port_attr_group, 523 NULL, 524 }; 525 526 static struct attribute *zfcp_unit_attrs[] = { 527 &dev_attr_unit_failed.attr, 528 &dev_attr_unit_in_recovery.attr, 529 &dev_attr_unit_status.attr, 530 &dev_attr_unit_access_denied.attr, 531 &dev_attr_unit_access_shared.attr, 532 &dev_attr_unit_access_readonly.attr, 533 NULL 534 }; 535 static struct attribute_group zfcp_unit_attr_group = { 536 .attrs = zfcp_unit_attrs, 537 }; 538 const struct attribute_group *zfcp_unit_attr_groups[] = { 539 &zfcp_unit_attr_group, 540 NULL, 541 }; 542 543 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 544 static ssize_t \ 545 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 546 struct device_attribute *attr, \ 547 char *buf) { \ 548 struct scsi_device *sdev = to_scsi_device(dev); \ 549 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 550 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 551 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 552 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 553 \ 554 spin_lock_bh(&lat->lock); \ 555 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 556 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 557 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 558 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 559 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 560 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 561 cc = lat->_name.counter; \ 562 spin_unlock_bh(&lat->lock); \ 563 \ 564 do_div(fsum, 1000); \ 565 do_div(fmin, 1000); \ 566 do_div(fmax, 1000); \ 567 do_div(csum, 1000); \ 568 do_div(cmin, 1000); \ 569 do_div(cmax, 1000); \ 570 \ 571 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 572 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 573 } \ 574 static ssize_t \ 575 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 576 struct device_attribute *attr, \ 577 const char *buf, size_t count) \ 578 { \ 579 struct scsi_device *sdev = to_scsi_device(dev); \ 580 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 581 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 582 unsigned long flags; \ 583 \ 584 spin_lock_irqsave(&lat->lock, flags); \ 585 lat->_name.fabric.sum = 0; \ 586 lat->_name.fabric.min = 0xFFFFFFFF; \ 587 lat->_name.fabric.max = 0; \ 588 lat->_name.channel.sum = 0; \ 589 lat->_name.channel.min = 0xFFFFFFFF; \ 590 lat->_name.channel.max = 0; \ 591 lat->_name.counter = 0; \ 592 spin_unlock_irqrestore(&lat->lock, flags); \ 593 \ 594 return (ssize_t) count; \ 595 } \ 596 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 597 zfcp_sysfs_unit_##_name##_latency_show, \ 598 zfcp_sysfs_unit_##_name##_latency_store); 599 600 ZFCP_DEFINE_LATENCY_ATTR(read); 601 ZFCP_DEFINE_LATENCY_ATTR(write); 602 ZFCP_DEFINE_LATENCY_ATTR(cmd); 603 604 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 605 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 606 struct device_attribute *attr,\ 607 char *buf) \ 608 { \ 609 struct scsi_device *sdev = to_scsi_device(dev); \ 610 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 611 \ 612 return sprintf(buf, _format, _value); \ 613 } \ 614 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 615 616 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 617 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 618 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 619 (unsigned long long) zfcp_sdev->port->wwpn); 620 621 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 622 struct device_attribute *attr, 623 char *buf) 624 { 625 struct scsi_device *sdev = to_scsi_device(dev); 626 627 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 628 } 629 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 630 631 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 632 (atomic_read(&zfcp_sdev->status) & 633 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 634 635 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 636 struct device_attribute *attr, 637 char *buf) 638 { 639 struct scsi_device *sdev = to_scsi_device(dev); 640 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 641 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 642 643 return sprintf(buf, "%d\n", failed); 644 } 645 646 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 647 struct device_attribute *attr, 648 const char *buf, size_t count) 649 { 650 struct scsi_device *sdev = to_scsi_device(dev); 651 unsigned long val; 652 653 if (kstrtoul(buf, 0, &val) || val != 0) 654 return -EINVAL; 655 656 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 657 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 658 "syufai3"); 659 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 660 661 return count; 662 } 663 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 664 zfcp_sysfs_scsi_zfcp_failed_show, 665 zfcp_sysfs_scsi_zfcp_failed_store); 666 667 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 668 (atomic_read(&zfcp_sdev->status) & 669 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 670 671 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 672 atomic_read(&zfcp_sdev->status)); 673 674 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 675 &dev_attr_fcp_lun, 676 &dev_attr_wwpn, 677 &dev_attr_hba_id, 678 &dev_attr_read_latency, 679 &dev_attr_write_latency, 680 &dev_attr_cmd_latency, 681 &dev_attr_zfcp_access_denied, 682 &dev_attr_zfcp_failed, 683 &dev_attr_zfcp_in_recovery, 684 &dev_attr_zfcp_status, 685 NULL 686 }; 687 688 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 689 struct device_attribute *attr, 690 char *buf) 691 { 692 struct Scsi_Host *scsi_host = dev_to_shost(dev); 693 struct fsf_qtcb_bottom_port *qtcb_port; 694 struct zfcp_adapter *adapter; 695 int retval; 696 697 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 698 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 699 return -EOPNOTSUPP; 700 701 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 702 if (!qtcb_port) 703 return -ENOMEM; 704 705 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 706 if (retval == 0 || retval == -EAGAIN) 707 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 708 qtcb_port->cb_util, qtcb_port->a_util); 709 kfree(qtcb_port); 710 return retval; 711 } 712 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 713 714 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 715 struct fsf_statistics_info *stat_inf) 716 { 717 struct Scsi_Host *scsi_host = dev_to_shost(dev); 718 struct fsf_qtcb_bottom_config *qtcb_config; 719 struct zfcp_adapter *adapter; 720 int retval; 721 722 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 723 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 724 return -EOPNOTSUPP; 725 726 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 727 GFP_KERNEL); 728 if (!qtcb_config) 729 return -ENOMEM; 730 731 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 732 if (retval == 0 || retval == -EAGAIN) 733 *stat_inf = qtcb_config->stat_info; 734 735 kfree(qtcb_config); 736 return retval; 737 } 738 739 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 740 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 741 struct device_attribute *attr,\ 742 char *buf) \ 743 { \ 744 struct fsf_statistics_info stat_info; \ 745 int retval; \ 746 \ 747 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 748 if (retval) \ 749 return retval; \ 750 \ 751 return sprintf(buf, _format, ## _arg); \ 752 } \ 753 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 754 755 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 756 (unsigned long long) stat_info.input_req, 757 (unsigned long long) stat_info.output_req, 758 (unsigned long long) stat_info.control_req); 759 760 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 761 (unsigned long long) stat_info.input_mb, 762 (unsigned long long) stat_info.output_mb); 763 764 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 765 (unsigned long long) stat_info.seconds_act); 766 767 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 768 struct device_attribute *attr, 769 char *buf) 770 { 771 struct Scsi_Host *scsi_host = class_to_shost(dev); 772 struct zfcp_qdio *qdio = 773 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 774 u64 util; 775 776 spin_lock_bh(&qdio->stat_lock); 777 util = qdio->req_q_util; 778 spin_unlock_bh(&qdio->stat_lock); 779 780 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 781 (unsigned long long)util); 782 } 783 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 784 785 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 786 &dev_attr_utilization, 787 &dev_attr_requests, 788 &dev_attr_megabytes, 789 &dev_attr_seconds_active, 790 &dev_attr_queue_full, 791 NULL 792 }; 793 794 static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show( 795 struct device *dev, struct device_attribute *attr, char *buf) 796 { 797 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 798 struct zfcp_diag_header *diag_hdr; 799 struct fc_els_flogi *nsp; 800 ssize_t rc = -ENOLINK; 801 unsigned long flags; 802 unsigned int status; 803 804 if (!adapter) 805 return -ENODEV; 806 807 status = atomic_read(&adapter->status); 808 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 809 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 810 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) 811 goto out; 812 813 diag_hdr = &adapter->diagnostics->config_data.header; 814 815 rc = zfcp_diag_update_buffer_limited( 816 adapter, diag_hdr, zfcp_diag_update_config_data_buffer); 817 if (rc != 0) 818 goto out; 819 820 spin_lock_irqsave(&diag_hdr->access_lock, flags); 821 /* nport_serv_param doesn't contain the ELS_Command code */ 822 nsp = (struct fc_els_flogi *)((unsigned long) 823 adapter->diagnostics->config_data 824 .data.nport_serv_param - 825 sizeof(u32)); 826 827 rc = scnprintf(buf, 5 + 2, "%hu\n", 828 be16_to_cpu(nsp->fl_csp.sp_bb_cred)); 829 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); 830 831 out: 832 zfcp_ccw_adapter_put(adapter); 833 return rc; 834 } 835 static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400, 836 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL); 837 838 #define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \ 839 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \ 840 struct device *dev, struct device_attribute *attr, char *buf) \ 841 { \ 842 struct zfcp_adapter *const adapter = \ 843 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \ 844 struct zfcp_diag_header *diag_hdr; \ 845 ssize_t rc = -ENOLINK; \ 846 unsigned long flags; \ 847 unsigned int status; \ 848 \ 849 if (!adapter) \ 850 return -ENODEV; \ 851 \ 852 status = atomic_read(&adapter->status); \ 853 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \ 854 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \ 855 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \ 856 goto out; \ 857 \ 858 if (!zfcp_diag_support_sfp(adapter)) { \ 859 rc = -EOPNOTSUPP; \ 860 goto out; \ 861 } \ 862 \ 863 diag_hdr = &adapter->diagnostics->port_data.header; \ 864 \ 865 rc = zfcp_diag_update_buffer_limited( \ 866 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \ 867 if (rc != 0) \ 868 goto out; \ 869 \ 870 spin_lock_irqsave(&diag_hdr->access_lock, flags); \ 871 rc = scnprintf( \ 872 buf, (_prtsize) + 2, _prtfmt "\n", \ 873 adapter->diagnostics->port_data.data._qtcb_member); \ 874 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \ 875 \ 876 out: \ 877 zfcp_ccw_adapter_put(adapter); \ 878 return rc; \ 879 } \ 880 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \ 881 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL) 882 883 ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd"); 884 ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu"); 885 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu"); 886 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu"); 887 ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu"); 888 ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu"); 889 ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu"); 890 ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu"); 891 ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu"); 892 ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu"); 893 894 static struct attribute *zfcp_sysfs_diag_attrs[] = { 895 &dev_attr_adapter_diag_sfp_temperature.attr, 896 &dev_attr_adapter_diag_sfp_vcc.attr, 897 &dev_attr_adapter_diag_sfp_tx_bias.attr, 898 &dev_attr_adapter_diag_sfp_tx_power.attr, 899 &dev_attr_adapter_diag_sfp_rx_power.attr, 900 &dev_attr_adapter_diag_sfp_port_tx_type.attr, 901 &dev_attr_adapter_diag_sfp_optical_port.attr, 902 &dev_attr_adapter_diag_sfp_sfp_invalid.attr, 903 &dev_attr_adapter_diag_sfp_connector_type.attr, 904 &dev_attr_adapter_diag_sfp_fec_active.attr, 905 &dev_attr_adapter_diag_b2b_credit.attr, 906 NULL, 907 }; 908 909 const struct attribute_group zfcp_sysfs_diag_attr_group = { 910 .name = "diagnostics", 911 .attrs = zfcp_sysfs_diag_attrs, 912 }; 913