1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * zfcp device driver 4 * 5 * sysfs attributes. 6 * 7 * Copyright IBM Corp. 2008, 2010 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 struct attribute *zfcp_adapter_attrs[] = { 374 &dev_attr_adapter_failed.attr, 375 &dev_attr_adapter_in_recovery.attr, 376 &dev_attr_adapter_port_remove.attr, 377 &dev_attr_adapter_port_rescan.attr, 378 &dev_attr_adapter_peer_wwnn.attr, 379 &dev_attr_adapter_peer_wwpn.attr, 380 &dev_attr_adapter_peer_d_id.attr, 381 &dev_attr_adapter_card_version.attr, 382 &dev_attr_adapter_lic_version.attr, 383 &dev_attr_adapter_status.attr, 384 &dev_attr_adapter_hardware_version.attr, 385 &dev_attr_adapter_diag_max_age.attr, 386 NULL 387 }; 388 389 struct attribute_group zfcp_sysfs_adapter_attrs = { 390 .attrs = zfcp_adapter_attrs, 391 }; 392 393 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 394 struct device_attribute *attr, 395 const char *buf, size_t count) 396 { 397 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 398 u64 fcp_lun; 399 int retval; 400 401 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 402 return -EINVAL; 403 404 retval = zfcp_unit_add(port, fcp_lun); 405 if (retval) 406 return retval; 407 408 return count; 409 } 410 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 411 412 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 413 struct device_attribute *attr, 414 const char *buf, size_t count) 415 { 416 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 417 u64 fcp_lun; 418 419 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 420 return -EINVAL; 421 422 if (zfcp_unit_remove(port, fcp_lun)) 423 return -EINVAL; 424 425 return count; 426 } 427 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 428 429 static struct attribute *zfcp_port_attrs[] = { 430 &dev_attr_unit_add.attr, 431 &dev_attr_unit_remove.attr, 432 &dev_attr_port_failed.attr, 433 &dev_attr_port_in_recovery.attr, 434 &dev_attr_port_status.attr, 435 &dev_attr_port_access_denied.attr, 436 NULL 437 }; 438 static struct attribute_group zfcp_port_attr_group = { 439 .attrs = zfcp_port_attrs, 440 }; 441 const struct attribute_group *zfcp_port_attr_groups[] = { 442 &zfcp_port_attr_group, 443 NULL, 444 }; 445 446 static struct attribute *zfcp_unit_attrs[] = { 447 &dev_attr_unit_failed.attr, 448 &dev_attr_unit_in_recovery.attr, 449 &dev_attr_unit_status.attr, 450 &dev_attr_unit_access_denied.attr, 451 &dev_attr_unit_access_shared.attr, 452 &dev_attr_unit_access_readonly.attr, 453 NULL 454 }; 455 static struct attribute_group zfcp_unit_attr_group = { 456 .attrs = zfcp_unit_attrs, 457 }; 458 const struct attribute_group *zfcp_unit_attr_groups[] = { 459 &zfcp_unit_attr_group, 460 NULL, 461 }; 462 463 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 464 static ssize_t \ 465 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 466 struct device_attribute *attr, \ 467 char *buf) { \ 468 struct scsi_device *sdev = to_scsi_device(dev); \ 469 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 470 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 471 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 472 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 473 \ 474 spin_lock_bh(&lat->lock); \ 475 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 476 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 477 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 478 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 479 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 480 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 481 cc = lat->_name.counter; \ 482 spin_unlock_bh(&lat->lock); \ 483 \ 484 do_div(fsum, 1000); \ 485 do_div(fmin, 1000); \ 486 do_div(fmax, 1000); \ 487 do_div(csum, 1000); \ 488 do_div(cmin, 1000); \ 489 do_div(cmax, 1000); \ 490 \ 491 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 492 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 493 } \ 494 static ssize_t \ 495 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 496 struct device_attribute *attr, \ 497 const char *buf, size_t count) \ 498 { \ 499 struct scsi_device *sdev = to_scsi_device(dev); \ 500 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 501 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 502 unsigned long flags; \ 503 \ 504 spin_lock_irqsave(&lat->lock, flags); \ 505 lat->_name.fabric.sum = 0; \ 506 lat->_name.fabric.min = 0xFFFFFFFF; \ 507 lat->_name.fabric.max = 0; \ 508 lat->_name.channel.sum = 0; \ 509 lat->_name.channel.min = 0xFFFFFFFF; \ 510 lat->_name.channel.max = 0; \ 511 lat->_name.counter = 0; \ 512 spin_unlock_irqrestore(&lat->lock, flags); \ 513 \ 514 return (ssize_t) count; \ 515 } \ 516 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 517 zfcp_sysfs_unit_##_name##_latency_show, \ 518 zfcp_sysfs_unit_##_name##_latency_store); 519 520 ZFCP_DEFINE_LATENCY_ATTR(read); 521 ZFCP_DEFINE_LATENCY_ATTR(write); 522 ZFCP_DEFINE_LATENCY_ATTR(cmd); 523 524 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 525 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 526 struct device_attribute *attr,\ 527 char *buf) \ 528 { \ 529 struct scsi_device *sdev = to_scsi_device(dev); \ 530 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 531 \ 532 return sprintf(buf, _format, _value); \ 533 } \ 534 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 535 536 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 537 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 538 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 539 (unsigned long long) zfcp_sdev->port->wwpn); 540 541 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 542 struct device_attribute *attr, 543 char *buf) 544 { 545 struct scsi_device *sdev = to_scsi_device(dev); 546 547 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 548 } 549 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 550 551 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 552 (atomic_read(&zfcp_sdev->status) & 553 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 554 555 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 556 struct device_attribute *attr, 557 char *buf) 558 { 559 struct scsi_device *sdev = to_scsi_device(dev); 560 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 561 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 562 563 return sprintf(buf, "%d\n", failed); 564 } 565 566 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 567 struct device_attribute *attr, 568 const char *buf, size_t count) 569 { 570 struct scsi_device *sdev = to_scsi_device(dev); 571 unsigned long val; 572 573 if (kstrtoul(buf, 0, &val) || val != 0) 574 return -EINVAL; 575 576 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 577 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 578 "syufai3"); 579 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 580 581 return count; 582 } 583 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 584 zfcp_sysfs_scsi_zfcp_failed_show, 585 zfcp_sysfs_scsi_zfcp_failed_store); 586 587 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 588 (atomic_read(&zfcp_sdev->status) & 589 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 590 591 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 592 atomic_read(&zfcp_sdev->status)); 593 594 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 595 &dev_attr_fcp_lun, 596 &dev_attr_wwpn, 597 &dev_attr_hba_id, 598 &dev_attr_read_latency, 599 &dev_attr_write_latency, 600 &dev_attr_cmd_latency, 601 &dev_attr_zfcp_access_denied, 602 &dev_attr_zfcp_failed, 603 &dev_attr_zfcp_in_recovery, 604 &dev_attr_zfcp_status, 605 NULL 606 }; 607 608 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 609 struct device_attribute *attr, 610 char *buf) 611 { 612 struct Scsi_Host *scsi_host = dev_to_shost(dev); 613 struct fsf_qtcb_bottom_port *qtcb_port; 614 struct zfcp_adapter *adapter; 615 int retval; 616 617 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 618 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 619 return -EOPNOTSUPP; 620 621 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 622 if (!qtcb_port) 623 return -ENOMEM; 624 625 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 626 if (retval == 0 || retval == -EAGAIN) 627 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 628 qtcb_port->cb_util, qtcb_port->a_util); 629 kfree(qtcb_port); 630 return retval; 631 } 632 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 633 634 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 635 struct fsf_statistics_info *stat_inf) 636 { 637 struct Scsi_Host *scsi_host = dev_to_shost(dev); 638 struct fsf_qtcb_bottom_config *qtcb_config; 639 struct zfcp_adapter *adapter; 640 int retval; 641 642 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 643 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 644 return -EOPNOTSUPP; 645 646 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 647 GFP_KERNEL); 648 if (!qtcb_config) 649 return -ENOMEM; 650 651 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 652 if (retval == 0 || retval == -EAGAIN) 653 *stat_inf = qtcb_config->stat_info; 654 655 kfree(qtcb_config); 656 return retval; 657 } 658 659 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 660 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 661 struct device_attribute *attr,\ 662 char *buf) \ 663 { \ 664 struct fsf_statistics_info stat_info; \ 665 int retval; \ 666 \ 667 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 668 if (retval) \ 669 return retval; \ 670 \ 671 return sprintf(buf, _format, ## _arg); \ 672 } \ 673 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 674 675 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 676 (unsigned long long) stat_info.input_req, 677 (unsigned long long) stat_info.output_req, 678 (unsigned long long) stat_info.control_req); 679 680 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 681 (unsigned long long) stat_info.input_mb, 682 (unsigned long long) stat_info.output_mb); 683 684 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 685 (unsigned long long) stat_info.seconds_act); 686 687 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 688 struct device_attribute *attr, 689 char *buf) 690 { 691 struct Scsi_Host *scsi_host = class_to_shost(dev); 692 struct zfcp_qdio *qdio = 693 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 694 u64 util; 695 696 spin_lock_bh(&qdio->stat_lock); 697 util = qdio->req_q_util; 698 spin_unlock_bh(&qdio->stat_lock); 699 700 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 701 (unsigned long long)util); 702 } 703 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 704 705 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 706 &dev_attr_utilization, 707 &dev_attr_requests, 708 &dev_attr_megabytes, 709 &dev_attr_seconds_active, 710 &dev_attr_queue_full, 711 NULL 712 }; 713 714 static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show( 715 struct device *dev, struct device_attribute *attr, char *buf) 716 { 717 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 718 struct zfcp_diag_header *diag_hdr; 719 struct fc_els_flogi *nsp; 720 ssize_t rc = -ENOLINK; 721 unsigned long flags; 722 unsigned int status; 723 724 if (!adapter) 725 return -ENODEV; 726 727 status = atomic_read(&adapter->status); 728 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 729 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 730 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) 731 goto out; 732 733 diag_hdr = &adapter->diagnostics->config_data.header; 734 735 rc = zfcp_diag_update_buffer_limited( 736 adapter, diag_hdr, zfcp_diag_update_config_data_buffer); 737 if (rc != 0) 738 goto out; 739 740 spin_lock_irqsave(&diag_hdr->access_lock, flags); 741 /* nport_serv_param doesn't contain the ELS_Command code */ 742 nsp = (struct fc_els_flogi *)((unsigned long) 743 adapter->diagnostics->config_data 744 .data.nport_serv_param - 745 sizeof(u32)); 746 747 rc = scnprintf(buf, 5 + 2, "%hu\n", 748 be16_to_cpu(nsp->fl_csp.sp_bb_cred)); 749 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); 750 751 out: 752 zfcp_ccw_adapter_put(adapter); 753 return rc; 754 } 755 static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400, 756 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL); 757 758 #define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \ 759 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \ 760 struct device *dev, struct device_attribute *attr, char *buf) \ 761 { \ 762 struct zfcp_adapter *const adapter = \ 763 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \ 764 struct zfcp_diag_header *diag_hdr; \ 765 ssize_t rc = -ENOLINK; \ 766 unsigned long flags; \ 767 unsigned int status; \ 768 \ 769 if (!adapter) \ 770 return -ENODEV; \ 771 \ 772 status = atomic_read(&adapter->status); \ 773 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \ 774 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \ 775 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \ 776 goto out; \ 777 \ 778 if (!zfcp_diag_support_sfp(adapter)) { \ 779 rc = -EOPNOTSUPP; \ 780 goto out; \ 781 } \ 782 \ 783 diag_hdr = &adapter->diagnostics->port_data.header; \ 784 \ 785 rc = zfcp_diag_update_buffer_limited( \ 786 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \ 787 if (rc != 0) \ 788 goto out; \ 789 \ 790 spin_lock_irqsave(&diag_hdr->access_lock, flags); \ 791 rc = scnprintf( \ 792 buf, (_prtsize) + 2, _prtfmt "\n", \ 793 adapter->diagnostics->port_data.data._qtcb_member); \ 794 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \ 795 \ 796 out: \ 797 zfcp_ccw_adapter_put(adapter); \ 798 return rc; \ 799 } \ 800 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \ 801 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL) 802 803 ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 5, "%hu"); 804 ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu"); 805 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu"); 806 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu"); 807 ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu"); 808 ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu"); 809 ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu"); 810 ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu"); 811 ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu"); 812 ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu"); 813 814 static struct attribute *zfcp_sysfs_diag_attrs[] = { 815 &dev_attr_adapter_diag_sfp_temperature.attr, 816 &dev_attr_adapter_diag_sfp_vcc.attr, 817 &dev_attr_adapter_diag_sfp_tx_bias.attr, 818 &dev_attr_adapter_diag_sfp_tx_power.attr, 819 &dev_attr_adapter_diag_sfp_rx_power.attr, 820 &dev_attr_adapter_diag_sfp_port_tx_type.attr, 821 &dev_attr_adapter_diag_sfp_optical_port.attr, 822 &dev_attr_adapter_diag_sfp_sfp_invalid.attr, 823 &dev_attr_adapter_diag_sfp_connector_type.attr, 824 &dev_attr_adapter_diag_sfp_fec_active.attr, 825 &dev_attr_adapter_diag_b2b_credit.attr, 826 NULL, 827 }; 828 829 const struct attribute_group zfcp_sysfs_diag_attr_group = { 830 .name = "diagnostics", 831 .attrs = zfcp_sysfs_diag_attrs, 832 }; 833