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); 219 220 if (!adapter) 221 return -ENODEV; 222 223 /* 224 * Users wish is our command: immediately schedule and flush a 225 * worker to conduct a synchronous port scan, that is, neither 226 * a random delay nor a rate limit is applied here. 227 */ 228 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); 229 flush_delayed_work(&adapter->scan_work); 230 zfcp_ccw_adapter_put(adapter); 231 232 return (ssize_t) count; 233 } 234 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 235 zfcp_sysfs_port_rescan_store); 236 237 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 238 239 static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port) 240 { 241 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 242 atomic_set(&port->units, -1); 243 } 244 245 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port) 246 { 247 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 248 return atomic_read(&port->units) == -1; 249 } 250 251 static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port) 252 { 253 struct zfcp_adapter *const adapter = port->adapter; 254 unsigned long flags; 255 struct scsi_device *sdev; 256 bool in_use = true; 257 258 mutex_lock(&zfcp_sysfs_port_units_mutex); 259 if (atomic_read(&port->units) > 0) 260 goto unlock_port_units_mutex; /* zfcp_unit(s) under port */ 261 262 spin_lock_irqsave(adapter->scsi_host->host_lock, flags); 263 __shost_for_each_device(sdev, adapter->scsi_host) { 264 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev); 265 266 if (sdev->sdev_state == SDEV_DEL || 267 sdev->sdev_state == SDEV_CANCEL) 268 continue; 269 if (zsdev->port != port) 270 continue; 271 /* alive scsi_device under port of interest */ 272 goto unlock_host_lock; 273 } 274 275 /* port is about to be removed, so no more unit_add or slave_alloc */ 276 zfcp_sysfs_port_set_removing(port); 277 in_use = false; 278 279 unlock_host_lock: 280 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags); 281 unlock_port_units_mutex: 282 mutex_unlock(&zfcp_sysfs_port_units_mutex); 283 return in_use; 284 } 285 286 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 287 struct device_attribute *attr, 288 const char *buf, size_t count) 289 { 290 struct ccw_device *cdev = to_ccwdev(dev); 291 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 292 struct zfcp_port *port; 293 u64 wwpn; 294 int retval = -EINVAL; 295 296 if (!adapter) 297 return -ENODEV; 298 299 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) 300 goto out; 301 302 port = zfcp_get_port_by_wwpn(adapter, wwpn); 303 if (!port) 304 goto out; 305 else 306 retval = 0; 307 308 if (zfcp_sysfs_port_in_use(port)) { 309 retval = -EBUSY; 310 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ 311 goto out; 312 } 313 314 write_lock_irq(&adapter->port_list_lock); 315 list_del(&port->list); 316 write_unlock_irq(&adapter->port_list_lock); 317 318 put_device(&port->dev); 319 320 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 321 device_unregister(&port->dev); 322 out: 323 zfcp_ccw_adapter_put(adapter); 324 return retval ? retval : (ssize_t) count; 325 } 326 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 327 zfcp_sysfs_port_remove_store); 328 329 static ssize_t 330 zfcp_sysfs_adapter_diag_max_age_show(struct device *dev, 331 struct device_attribute *attr, char *buf) 332 { 333 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 334 ssize_t rc; 335 336 if (!adapter) 337 return -ENODEV; 338 339 /* ceil(log(2^64 - 1) / log(10)) = 20 */ 340 rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age); 341 342 zfcp_ccw_adapter_put(adapter); 343 return rc; 344 } 345 346 static ssize_t 347 zfcp_sysfs_adapter_diag_max_age_store(struct device *dev, 348 struct device_attribute *attr, 349 const char *buf, size_t count) 350 { 351 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 352 unsigned long max_age; 353 ssize_t rc; 354 355 if (!adapter) 356 return -ENODEV; 357 358 rc = kstrtoul(buf, 10, &max_age); 359 if (rc != 0) 360 goto out; 361 362 adapter->diagnostics->max_age = max_age; 363 364 rc = count; 365 out: 366 zfcp_ccw_adapter_put(adapter); 367 return rc; 368 } 369 static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644, 370 zfcp_sysfs_adapter_diag_max_age_show, 371 zfcp_sysfs_adapter_diag_max_age_store); 372 373 static ssize_t zfcp_sysfs_adapter_fc_security_show( 374 struct device *dev, struct device_attribute *attr, char *buf) 375 { 376 struct ccw_device *cdev = to_ccwdev(dev); 377 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 378 unsigned int status; 379 int i; 380 381 if (!adapter) 382 return -ENODEV; 383 384 /* 385 * Adapter status COMMON_OPEN implies xconf data and xport data 386 * was done. Adapter FC Endpoint Security capability remains 387 * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link 388 * down). 389 */ 390 status = atomic_read(&adapter->status); 391 if (0 == (status & ZFCP_STATUS_COMMON_OPEN)) 392 i = sprintf(buf, "unknown\n"); 393 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 394 i = sprintf(buf, "unsupported\n"); 395 else { 396 i = zfcp_fsf_scnprint_fc_security( 397 buf, PAGE_SIZE - 1, adapter->fc_security_algorithms, 398 ZFCP_FSF_PRINT_FMT_LIST); 399 i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); 400 } 401 402 zfcp_ccw_adapter_put(adapter); 403 return i; 404 } 405 static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO, 406 zfcp_sysfs_adapter_fc_security_show, 407 NULL); 408 409 static struct attribute *zfcp_adapter_attrs[] = { 410 &dev_attr_adapter_failed.attr, 411 &dev_attr_adapter_in_recovery.attr, 412 &dev_attr_adapter_port_remove.attr, 413 &dev_attr_adapter_port_rescan.attr, 414 &dev_attr_adapter_peer_wwnn.attr, 415 &dev_attr_adapter_peer_wwpn.attr, 416 &dev_attr_adapter_peer_d_id.attr, 417 &dev_attr_adapter_card_version.attr, 418 &dev_attr_adapter_lic_version.attr, 419 &dev_attr_adapter_status.attr, 420 &dev_attr_adapter_hardware_version.attr, 421 &dev_attr_adapter_diag_max_age.attr, 422 &dev_attr_adapter_fc_security.attr, 423 NULL 424 }; 425 426 struct attribute_group zfcp_sysfs_adapter_attrs = { 427 .attrs = zfcp_adapter_attrs, 428 }; 429 430 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 431 struct device_attribute *attr, 432 const char *buf, size_t count) 433 { 434 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 435 u64 fcp_lun; 436 int retval; 437 438 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 439 return -EINVAL; 440 441 retval = zfcp_unit_add(port, fcp_lun); 442 if (retval) 443 return retval; 444 445 return count; 446 } 447 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 448 449 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 450 struct device_attribute *attr, 451 const char *buf, size_t count) 452 { 453 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 454 u64 fcp_lun; 455 456 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 457 return -EINVAL; 458 459 if (zfcp_unit_remove(port, fcp_lun)) 460 return -EINVAL; 461 462 return count; 463 } 464 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 465 466 static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev, 467 struct device_attribute *attr, 468 char *buf) 469 { 470 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 471 struct zfcp_adapter *adapter = port->adapter; 472 unsigned int status = atomic_read(&port->status); 473 int i; 474 475 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 476 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 477 0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) || 478 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) || 479 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED)) 480 i = sprintf(buf, "unknown\n"); 481 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 482 i = sprintf(buf, "unsupported\n"); 483 else { 484 i = zfcp_fsf_scnprint_fc_security( 485 buf, PAGE_SIZE - 1, port->connection_info, 486 ZFCP_FSF_PRINT_FMT_SINGLEITEM); 487 i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); 488 } 489 490 return i; 491 } 492 static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO, 493 zfcp_sysfs_port_fc_security_show, 494 NULL); 495 496 static struct attribute *zfcp_port_attrs[] = { 497 &dev_attr_unit_add.attr, 498 &dev_attr_unit_remove.attr, 499 &dev_attr_port_failed.attr, 500 &dev_attr_port_in_recovery.attr, 501 &dev_attr_port_status.attr, 502 &dev_attr_port_access_denied.attr, 503 &dev_attr_port_fc_security.attr, 504 NULL 505 }; 506 static struct attribute_group zfcp_port_attr_group = { 507 .attrs = zfcp_port_attrs, 508 }; 509 const struct attribute_group *zfcp_port_attr_groups[] = { 510 &zfcp_port_attr_group, 511 NULL, 512 }; 513 514 static struct attribute *zfcp_unit_attrs[] = { 515 &dev_attr_unit_failed.attr, 516 &dev_attr_unit_in_recovery.attr, 517 &dev_attr_unit_status.attr, 518 &dev_attr_unit_access_denied.attr, 519 &dev_attr_unit_access_shared.attr, 520 &dev_attr_unit_access_readonly.attr, 521 NULL 522 }; 523 static struct attribute_group zfcp_unit_attr_group = { 524 .attrs = zfcp_unit_attrs, 525 }; 526 const struct attribute_group *zfcp_unit_attr_groups[] = { 527 &zfcp_unit_attr_group, 528 NULL, 529 }; 530 531 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 532 static ssize_t \ 533 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 534 struct device_attribute *attr, \ 535 char *buf) { \ 536 struct scsi_device *sdev = to_scsi_device(dev); \ 537 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 538 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 539 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 540 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 541 \ 542 spin_lock_bh(&lat->lock); \ 543 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 544 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 545 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 546 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 547 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 548 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 549 cc = lat->_name.counter; \ 550 spin_unlock_bh(&lat->lock); \ 551 \ 552 do_div(fsum, 1000); \ 553 do_div(fmin, 1000); \ 554 do_div(fmax, 1000); \ 555 do_div(csum, 1000); \ 556 do_div(cmin, 1000); \ 557 do_div(cmax, 1000); \ 558 \ 559 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 560 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 561 } \ 562 static ssize_t \ 563 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 564 struct device_attribute *attr, \ 565 const char *buf, size_t count) \ 566 { \ 567 struct scsi_device *sdev = to_scsi_device(dev); \ 568 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 569 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 570 unsigned long flags; \ 571 \ 572 spin_lock_irqsave(&lat->lock, flags); \ 573 lat->_name.fabric.sum = 0; \ 574 lat->_name.fabric.min = 0xFFFFFFFF; \ 575 lat->_name.fabric.max = 0; \ 576 lat->_name.channel.sum = 0; \ 577 lat->_name.channel.min = 0xFFFFFFFF; \ 578 lat->_name.channel.max = 0; \ 579 lat->_name.counter = 0; \ 580 spin_unlock_irqrestore(&lat->lock, flags); \ 581 \ 582 return (ssize_t) count; \ 583 } \ 584 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 585 zfcp_sysfs_unit_##_name##_latency_show, \ 586 zfcp_sysfs_unit_##_name##_latency_store); 587 588 ZFCP_DEFINE_LATENCY_ATTR(read); 589 ZFCP_DEFINE_LATENCY_ATTR(write); 590 ZFCP_DEFINE_LATENCY_ATTR(cmd); 591 592 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 593 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 594 struct device_attribute *attr,\ 595 char *buf) \ 596 { \ 597 struct scsi_device *sdev = to_scsi_device(dev); \ 598 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 599 \ 600 return sprintf(buf, _format, _value); \ 601 } \ 602 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 603 604 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 605 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 606 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 607 (unsigned long long) zfcp_sdev->port->wwpn); 608 609 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 610 struct device_attribute *attr, 611 char *buf) 612 { 613 struct scsi_device *sdev = to_scsi_device(dev); 614 615 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 616 } 617 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 618 619 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 620 (atomic_read(&zfcp_sdev->status) & 621 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 622 623 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 624 struct device_attribute *attr, 625 char *buf) 626 { 627 struct scsi_device *sdev = to_scsi_device(dev); 628 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 629 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 630 631 return sprintf(buf, "%d\n", failed); 632 } 633 634 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 635 struct device_attribute *attr, 636 const char *buf, size_t count) 637 { 638 struct scsi_device *sdev = to_scsi_device(dev); 639 unsigned long val; 640 641 if (kstrtoul(buf, 0, &val) || val != 0) 642 return -EINVAL; 643 644 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 645 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 646 "syufai3"); 647 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 648 649 return count; 650 } 651 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 652 zfcp_sysfs_scsi_zfcp_failed_show, 653 zfcp_sysfs_scsi_zfcp_failed_store); 654 655 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 656 (atomic_read(&zfcp_sdev->status) & 657 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 658 659 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 660 atomic_read(&zfcp_sdev->status)); 661 662 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 663 &dev_attr_fcp_lun, 664 &dev_attr_wwpn, 665 &dev_attr_hba_id, 666 &dev_attr_read_latency, 667 &dev_attr_write_latency, 668 &dev_attr_cmd_latency, 669 &dev_attr_zfcp_access_denied, 670 &dev_attr_zfcp_failed, 671 &dev_attr_zfcp_in_recovery, 672 &dev_attr_zfcp_status, 673 NULL 674 }; 675 676 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 677 struct device_attribute *attr, 678 char *buf) 679 { 680 struct Scsi_Host *scsi_host = dev_to_shost(dev); 681 struct fsf_qtcb_bottom_port *qtcb_port; 682 struct zfcp_adapter *adapter; 683 int retval; 684 685 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 686 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 687 return -EOPNOTSUPP; 688 689 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 690 if (!qtcb_port) 691 return -ENOMEM; 692 693 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 694 if (retval == 0 || retval == -EAGAIN) 695 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 696 qtcb_port->cb_util, qtcb_port->a_util); 697 kfree(qtcb_port); 698 return retval; 699 } 700 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 701 702 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 703 struct fsf_statistics_info *stat_inf) 704 { 705 struct Scsi_Host *scsi_host = dev_to_shost(dev); 706 struct fsf_qtcb_bottom_config *qtcb_config; 707 struct zfcp_adapter *adapter; 708 int retval; 709 710 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 711 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 712 return -EOPNOTSUPP; 713 714 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 715 GFP_KERNEL); 716 if (!qtcb_config) 717 return -ENOMEM; 718 719 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 720 if (retval == 0 || retval == -EAGAIN) 721 *stat_inf = qtcb_config->stat_info; 722 723 kfree(qtcb_config); 724 return retval; 725 } 726 727 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 728 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 729 struct device_attribute *attr,\ 730 char *buf) \ 731 { \ 732 struct fsf_statistics_info stat_info; \ 733 int retval; \ 734 \ 735 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 736 if (retval) \ 737 return retval; \ 738 \ 739 return sprintf(buf, _format, ## _arg); \ 740 } \ 741 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 742 743 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 744 (unsigned long long) stat_info.input_req, 745 (unsigned long long) stat_info.output_req, 746 (unsigned long long) stat_info.control_req); 747 748 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 749 (unsigned long long) stat_info.input_mb, 750 (unsigned long long) stat_info.output_mb); 751 752 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 753 (unsigned long long) stat_info.seconds_act); 754 755 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 756 struct device_attribute *attr, 757 char *buf) 758 { 759 struct Scsi_Host *scsi_host = class_to_shost(dev); 760 struct zfcp_qdio *qdio = 761 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 762 u64 util; 763 764 spin_lock_bh(&qdio->stat_lock); 765 util = qdio->req_q_util; 766 spin_unlock_bh(&qdio->stat_lock); 767 768 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 769 (unsigned long long)util); 770 } 771 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 772 773 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 774 &dev_attr_utilization, 775 &dev_attr_requests, 776 &dev_attr_megabytes, 777 &dev_attr_seconds_active, 778 &dev_attr_queue_full, 779 NULL 780 }; 781 782 static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show( 783 struct device *dev, struct device_attribute *attr, char *buf) 784 { 785 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 786 struct zfcp_diag_header *diag_hdr; 787 struct fc_els_flogi *nsp; 788 ssize_t rc = -ENOLINK; 789 unsigned long flags; 790 unsigned int status; 791 792 if (!adapter) 793 return -ENODEV; 794 795 status = atomic_read(&adapter->status); 796 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 797 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 798 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) 799 goto out; 800 801 diag_hdr = &adapter->diagnostics->config_data.header; 802 803 rc = zfcp_diag_update_buffer_limited( 804 adapter, diag_hdr, zfcp_diag_update_config_data_buffer); 805 if (rc != 0) 806 goto out; 807 808 spin_lock_irqsave(&diag_hdr->access_lock, flags); 809 /* nport_serv_param doesn't contain the ELS_Command code */ 810 nsp = (struct fc_els_flogi *)((unsigned long) 811 adapter->diagnostics->config_data 812 .data.nport_serv_param - 813 sizeof(u32)); 814 815 rc = scnprintf(buf, 5 + 2, "%hu\n", 816 be16_to_cpu(nsp->fl_csp.sp_bb_cred)); 817 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); 818 819 out: 820 zfcp_ccw_adapter_put(adapter); 821 return rc; 822 } 823 static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400, 824 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL); 825 826 #define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \ 827 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \ 828 struct device *dev, struct device_attribute *attr, char *buf) \ 829 { \ 830 struct zfcp_adapter *const adapter = \ 831 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \ 832 struct zfcp_diag_header *diag_hdr; \ 833 ssize_t rc = -ENOLINK; \ 834 unsigned long flags; \ 835 unsigned int status; \ 836 \ 837 if (!adapter) \ 838 return -ENODEV; \ 839 \ 840 status = atomic_read(&adapter->status); \ 841 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \ 842 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \ 843 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \ 844 goto out; \ 845 \ 846 if (!zfcp_diag_support_sfp(adapter)) { \ 847 rc = -EOPNOTSUPP; \ 848 goto out; \ 849 } \ 850 \ 851 diag_hdr = &adapter->diagnostics->port_data.header; \ 852 \ 853 rc = zfcp_diag_update_buffer_limited( \ 854 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \ 855 if (rc != 0) \ 856 goto out; \ 857 \ 858 spin_lock_irqsave(&diag_hdr->access_lock, flags); \ 859 rc = scnprintf( \ 860 buf, (_prtsize) + 2, _prtfmt "\n", \ 861 adapter->diagnostics->port_data.data._qtcb_member); \ 862 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \ 863 \ 864 out: \ 865 zfcp_ccw_adapter_put(adapter); \ 866 return rc; \ 867 } \ 868 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \ 869 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL) 870 871 ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd"); 872 ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu"); 873 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu"); 874 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu"); 875 ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu"); 876 ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu"); 877 ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu"); 878 ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu"); 879 ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu"); 880 ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu"); 881 882 static struct attribute *zfcp_sysfs_diag_attrs[] = { 883 &dev_attr_adapter_diag_sfp_temperature.attr, 884 &dev_attr_adapter_diag_sfp_vcc.attr, 885 &dev_attr_adapter_diag_sfp_tx_bias.attr, 886 &dev_attr_adapter_diag_sfp_tx_power.attr, 887 &dev_attr_adapter_diag_sfp_rx_power.attr, 888 &dev_attr_adapter_diag_sfp_port_tx_type.attr, 889 &dev_attr_adapter_diag_sfp_optical_port.attr, 890 &dev_attr_adapter_diag_sfp_sfp_invalid.attr, 891 &dev_attr_adapter_diag_sfp_connector_type.attr, 892 &dev_attr_adapter_diag_sfp_fec_active.attr, 893 &dev_attr_adapter_diag_b2b_credit.attr, 894 NULL, 895 }; 896 897 const struct attribute_group zfcp_sysfs_diag_attr_group = { 898 .name = "diagnostics", 899 .attrs = zfcp_sysfs_diag_attrs, 900 }; 901