FILE
zfcp_sysfs.c
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linux-6.19.14/drivers/s390/scsi/zfcp_sysfs.c
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 pr_fmt(fmt) "zfcp: " fmt 11 12#include <linux/slab.h> 13#include "zfcp_diag.h" 14#include "zfcp_ext.h" 15 16#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 17struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 18 _show, _store) 19#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 20static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 21 struct device_attribute *at,\ 22 char *buf) \ 23{ \ 24 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ 25 \ 26 return sysfs_emit(buf, _format, _value); \ 27} \ 28static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 29 zfcp_sysfs_##_feat##_##_name##_show, NULL); 30 31#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ 32static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 33 struct device_attribute *at,\ 34 char *buf) \ 35{ \ 36 return sysfs_emit(buf, _format, _value); \ 37} \ 38static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 39 zfcp_sysfs_##_feat##_##_name##_show, NULL); 40 41#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ 42static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 43 struct device_attribute *at,\ 44 char *buf) \ 45{ \ 46 struct ccw_device *cdev = to_ccwdev(dev); \ 47 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ 48 int i; \ 49 \ 50 if (!adapter) \ 51 return -ENODEV; \ 52 \ 53 i = sysfs_emit(buf, _format, _value); \ 54 zfcp_ccw_adapter_put(adapter); \ 55 return i; \ 56} \ 57static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ 58 zfcp_sysfs_adapter_##_name##_show, NULL); 59 60ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); 61ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", 62 (unsigned long long) adapter->peer_wwnn); 63ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", 64 (unsigned long long) adapter->peer_wwpn); 65ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); 66ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); 67ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); 68ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); 69ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & 70 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 71 72ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 73 atomic_read(&port->status)); 74ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 75 (atomic_read(&port->status) & 76 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 77ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0); 78 79ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 80 zfcp_unit_sdev_status(unit)); 81ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 82 (zfcp_unit_sdev_status(unit) & 83 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 84ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 85 (zfcp_unit_sdev_status(unit) & 86 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 87ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); 88ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); 89 90static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, 91 struct device_attribute *attr, 92 char *buf) 93{ 94 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 95 96 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 97 return sysfs_emit(buf, "1\n"); 98 99 return sysfs_emit(buf, "0\n"); 100} 101 102static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, 103 struct device_attribute *attr, 104 const char *buf, size_t count) 105{ 106 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 107 unsigned long val; 108 109 if (kstrtoul(buf, 0, &val) || val != 0) 110 return -EINVAL; 111 112 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); 113 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); 114 zfcp_erp_wait(port->adapter); 115 116 return count; 117} 118static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 119 zfcp_sysfs_port_failed_show, 120 zfcp_sysfs_port_failed_store); 121 122static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, 123 struct device_attribute *attr, 124 char *buf) 125{ 126 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 127 struct scsi_device *sdev; 128 unsigned int status, failed = 1; 129 130 sdev = zfcp_unit_sdev(unit); 131 if (sdev) { 132 status = atomic_read(&sdev_to_zfcp(sdev)->status); 133 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 134 scsi_device_put(sdev); 135 } 136 137 return sysfs_emit(buf, "%d\n", failed); 138} 139 140static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, 141 struct device_attribute *attr, 142 const char *buf, size_t count) 143{ 144 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 145 unsigned long val; 146 struct scsi_device *sdev; 147 148 if (kstrtoul(buf, 0, &val) || val != 0) 149 return -EINVAL; 150 151 sdev = zfcp_unit_sdev(unit); 152 if (sdev) { 153 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 154 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 155 "syufai2"); 156 zfcp_erp_wait(unit->port->adapter); 157 } else 158 zfcp_unit_scsi_scan(unit); 159 160 return count; 161} 162static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 163 zfcp_sysfs_unit_failed_show, 164 zfcp_sysfs_unit_failed_store); 165 166static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, 167 struct device_attribute *attr, 168 char *buf) 169{ 170 struct ccw_device *cdev = to_ccwdev(dev); 171 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 172 int i; 173 174 if (!adapter) 175 return -ENODEV; 176 177 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 178 i = sysfs_emit(buf, "1\n"); 179 else 180 i = sysfs_emit(buf, "0\n"); 181 182 zfcp_ccw_adapter_put(adapter); 183 return i; 184} 185 186static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, 187 struct device_attribute *attr, 188 const char *buf, size_t count) 189{ 190 struct ccw_device *cdev = to_ccwdev(dev); 191 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 192 unsigned long val; 193 int retval = 0; 194 195 if (!adapter) 196 return -ENODEV; 197 198 if (kstrtoul(buf, 0, &val) || val != 0) { 199 retval = -EINVAL; 200 goto out; 201 } 202 203 zfcp_erp_adapter_reset_sync(adapter, "syafai2"); 204out: 205 zfcp_ccw_adapter_put(adapter); 206 return retval ? retval : (ssize_t) count; 207} 208static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 209 zfcp_sysfs_adapter_failed_show, 210 zfcp_sysfs_adapter_failed_store); 211 212static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 213 struct device_attribute *attr, 214 const char *buf, size_t count) 215{ 216 struct ccw_device *cdev = to_ccwdev(dev); 217 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 218 int retval = 0; 219 220 if (!adapter) 221 return -ENODEV; 222 223 /* 224 * If `scsi_host` is missing, we can't schedule `scan_work`, as it 225 * makes use of the corresponding fc_host object. But this state is 226 * only possible if xconfig/xport data has never completed yet, 227 * and we couldn't successfully scan for ports anyway. 228 */ 229 if (adapter->scsi_host == NULL) { 230 retval = -ENODEV; 231 goto out; 232 } 233 234 /* 235 * Users wish is our command: immediately schedule and flush a 236 * worker to conduct a synchronous port scan, that is, neither 237 * a random delay nor a rate limit is applied here. 238 */ 239 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); 240 flush_delayed_work(&adapter->scan_work); 241out: 242 zfcp_ccw_adapter_put(adapter); 243 return retval ? retval : (ssize_t) count; 244} 245static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 246 zfcp_sysfs_port_rescan_store); 247 248DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 249 250static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port) 251{ 252 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 253 atomic_set(&port->units, -1); 254} 255 256bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port) 257{ 258 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 259 return atomic_read(&port->units) == -1; 260} 261 262static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port) 263{ 264 struct zfcp_adapter *const adapter = port->adapter; 265 unsigned long flags; 266 struct scsi_device *sdev; 267 bool in_use = true; 268 269 mutex_lock(&zfcp_sysfs_port_units_mutex); 270 if (atomic_read(&port->units) > 0) 271 goto unlock_port_units_mutex; /* zfcp_unit(s) under port */ 272 273 spin_lock_irqsave(adapter->scsi_host->host_lock, flags); 274 __shost_for_each_device(sdev, adapter->scsi_host) { 275 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev); 276 277 if (sdev->sdev_state == SDEV_DEL || 278 sdev->sdev_state == SDEV_CANCEL) 279 continue; 280 if (zsdev->port != port) 281 continue; 282 /* alive scsi_device under port of interest */ 283 goto unlock_host_lock; 284 } 285 286 /* port is about to be removed, so no more unit_add or sdev_init */ 287 zfcp_sysfs_port_set_removing(port); 288 in_use = false; 289 290unlock_host_lock: 291 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags); 292unlock_port_units_mutex: 293 mutex_unlock(&zfcp_sysfs_port_units_mutex); 294 return in_use; 295} 296 297static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 298 struct device_attribute *attr, 299 const char *buf, size_t count) 300{ 301 struct ccw_device *cdev = to_ccwdev(dev); 302 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 303 struct zfcp_port *port; 304 u64 wwpn; 305 int retval = -EINVAL; 306 307 if (!adapter) 308 return -ENODEV; 309 310 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) 311 goto out; 312 313 port = zfcp_get_port_by_wwpn(adapter, wwpn); 314 if (!port) 315 goto out; 316 else 317 retval = 0; 318 319 if (zfcp_sysfs_port_in_use(port)) { 320 retval = -EBUSY; 321 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ 322 goto out; 323 } 324 325 write_lock_irq(&adapter->port_list_lock); 326 list_del(&port->list); 327 write_unlock_irq(&adapter->port_list_lock); 328 329 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 330 device_unregister(&port->dev); 331 332 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ 333 out: 334 zfcp_ccw_adapter_put(adapter); 335 return retval ? retval : (ssize_t) count; 336} 337static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 338 zfcp_sysfs_port_remove_store); 339 340static ssize_t 341zfcp_sysfs_adapter_diag_max_age_show(struct device *dev, 342 struct device_attribute *attr, char *buf) 343{ 344 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 345 ssize_t rc; 346 347 if (!adapter) 348 return -ENODEV; 349 350 rc = sysfs_emit(buf, "%lu\n", adapter->diagnostics->max_age); 351 352 zfcp_ccw_adapter_put(adapter); 353 return rc; 354} 355 356static ssize_t 357zfcp_sysfs_adapter_diag_max_age_store(struct device *dev, 358 struct device_attribute *attr, 359 const char *buf, size_t count) 360{ 361 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 362 unsigned long max_age; 363 ssize_t rc; 364 365 if (!adapter) 366 return -ENODEV; 367 368 rc = kstrtoul(buf, 10, &max_age); 369 if (rc != 0) 370 goto out; 371 372 adapter->diagnostics->max_age = max_age; 373 374 rc = count; 375out: 376 zfcp_ccw_adapter_put(adapter); 377 return rc; 378} 379static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644, 380 zfcp_sysfs_adapter_diag_max_age_show, 381 zfcp_sysfs_adapter_diag_max_age_store); 382 383static ssize_t zfcp_sysfs_adapter_fc_security_show( 384 struct device *dev, struct device_attribute *attr, char *buf) 385{ 386 struct ccw_device *cdev = to_ccwdev(dev); 387 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 388 unsigned int status; 389 int i; 390 391 if (!adapter) 392 return -ENODEV; 393 394 /* 395 * Adapter status COMMON_OPEN implies xconf data and xport data 396 * was done. Adapter FC Endpoint Security capability remains 397 * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link 398 * down). 399 */ 400 status = atomic_read(&adapter->status); 401 if (0 == (status & ZFCP_STATUS_COMMON_OPEN)) 402 i = sysfs_emit(buf, "unknown\n"); 403 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 404 i = sysfs_emit(buf, "unsupported\n"); 405 else { 406 i = zfcp_fsf_scnprint_fc_security( 407 buf, PAGE_SIZE - 1, adapter->fc_security_algorithms, 408 ZFCP_FSF_PRINT_FMT_LIST); 409 i += sysfs_emit_at(buf, i, "\n"); 410 } 411 412 zfcp_ccw_adapter_put(adapter); 413 return i; 414} 415static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO, 416 zfcp_sysfs_adapter_fc_security_show, 417 NULL); 418 419static struct attribute *zfcp_adapter_attrs[] = { 420 &dev_attr_adapter_failed.attr, 421 &dev_attr_adapter_in_recovery.attr, 422 &dev_attr_adapter_port_remove.attr, 423 &dev_attr_adapter_port_rescan.attr, 424 &dev_attr_adapter_peer_wwnn.attr, 425 &dev_attr_adapter_peer_wwpn.attr, 426 &dev_attr_adapter_peer_d_id.attr, 427 &dev_attr_adapter_card_version.attr, 428 &dev_attr_adapter_lic_version.attr, 429 &dev_attr_adapter_status.attr, 430 &dev_attr_adapter_hardware_version.attr, 431 &dev_attr_adapter_diag_max_age.attr, 432 &dev_attr_adapter_fc_security.attr, 433 NULL 434}; 435 436static const struct attribute_group zfcp_sysfs_adapter_attr_group = { 437 .attrs = zfcp_adapter_attrs, 438}; 439 440static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 441 struct device_attribute *attr, 442 const char *buf, size_t count) 443{ 444 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 445 u64 fcp_lun; 446 int retval; 447 448 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 449 return -EINVAL; 450 451 flush_work(&port->rport_work); 452 453 retval = zfcp_unit_add(port, fcp_lun); 454 if (retval) 455 return retval; 456 457 return count; 458} 459static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 460 461static 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} 476static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 477 478static 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_PORT_LINK_TEST) || 491 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) || 492 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED)) 493 i = sysfs_emit(buf, "unknown\n"); 494 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) 495 i = sysfs_emit(buf, "unsupported\n"); 496 else { 497 i = zfcp_fsf_scnprint_fc_security( 498 buf, PAGE_SIZE - 1, port->connection_info, 499 ZFCP_FSF_PRINT_FMT_SINGLEITEM); 500 i += sysfs_emit_at(buf, i, "\n"); 501 } 502 503 return i; 504} 505static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO, 506 zfcp_sysfs_port_fc_security_show, 507 NULL); 508 509static struct attribute *zfcp_port_attrs[] = { 510 &dev_attr_unit_add.attr, 511 &dev_attr_unit_remove.attr, 512 &dev_attr_port_failed.attr, 513 &dev_attr_port_in_recovery.attr, 514 &dev_attr_port_status.attr, 515 &dev_attr_port_access_denied.attr, 516 &dev_attr_port_fc_security.attr, 517 NULL 518}; 519static struct attribute_group zfcp_port_attr_group = { 520 .attrs = zfcp_port_attrs, 521}; 522const struct attribute_group *zfcp_port_attr_groups[] = { 523 &zfcp_port_attr_group, 524 NULL, 525}; 526 527static struct attribute *zfcp_unit_attrs[] = { 528 &dev_attr_unit_failed.attr, 529 &dev_attr_unit_in_recovery.attr, 530 &dev_attr_unit_status.attr, 531 &dev_attr_unit_access_denied.attr, 532 &dev_attr_unit_access_shared.attr, 533 &dev_attr_unit_access_readonly.attr, 534 NULL 535}; 536static struct attribute_group zfcp_unit_attr_group = { 537 .attrs = zfcp_unit_attrs, 538}; 539const struct attribute_group *zfcp_unit_attr_groups[] = { 540 &zfcp_unit_attr_group, 541 NULL, 542}; 543 544#define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 545static ssize_t \ 546zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 547 struct device_attribute *attr, \ 548 char *buf) { \ 549 struct scsi_device *sdev = to_scsi_device(dev); \ 550 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 551 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 552 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 553 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 554 \ 555 spin_lock_bh(&lat->lock); \ 556 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 557 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 558 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 559 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 560 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 561 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 562 cc = lat->_name.counter; \ 563 spin_unlock_bh(&lat->lock); \ 564 \ 565 do_div(fsum, 1000); \ 566 do_div(fmin, 1000); \ 567 do_div(fmax, 1000); \ 568 do_div(csum, 1000); \ 569 do_div(cmin, 1000); \ 570 do_div(cmax, 1000); \ 571 \ 572 return sysfs_emit(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 573 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 574} \ 575static ssize_t \ 576zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 577 struct device_attribute *attr, \ 578 const char *buf, size_t count) \ 579{ \ 580 struct scsi_device *sdev = to_scsi_device(dev); \ 581 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 582 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 583 unsigned long flags; \ 584 \ 585 spin_lock_irqsave(&lat->lock, flags); \ 586 lat->_name.fabric.sum = 0; \ 587 lat->_name.fabric.min = 0xFFFFFFFF; \ 588 lat->_name.fabric.max = 0; \ 589 lat->_name.channel.sum = 0; \ 590 lat->_name.channel.min = 0xFFFFFFFF; \ 591 lat->_name.channel.max = 0; \ 592 lat->_name.counter = 0; \ 593 spin_unlock_irqrestore(&lat->lock, flags); \ 594 \ 595 return (ssize_t) count; \ 596} \ 597static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 598 zfcp_sysfs_unit_##_name##_latency_show, \ 599 zfcp_sysfs_unit_##_name##_latency_store); 600 601ZFCP_DEFINE_LATENCY_ATTR(read); 602ZFCP_DEFINE_LATENCY_ATTR(write); 603ZFCP_DEFINE_LATENCY_ATTR(cmd); 604 605#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 606static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 607 struct device_attribute *attr,\ 608 char *buf) \ 609{ \ 610 struct scsi_device *sdev = to_scsi_device(dev); \ 611 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 612 \ 613 return sysfs_emit(buf, _format, _value); \ 614} \ 615static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 616 617ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 618 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 619ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 620 (unsigned long long) zfcp_sdev->port->wwpn); 621 622static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 623 struct device_attribute *attr, 624 char *buf) 625{ 626 struct scsi_device *sdev = to_scsi_device(dev); 627 628 return sysfs_emit(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 629} 630static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 631 632ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 633 (atomic_read(&zfcp_sdev->status) & 634 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 635 636static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 637 struct device_attribute *attr, 638 char *buf) 639{ 640 struct scsi_device *sdev = to_scsi_device(dev); 641 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 642 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 643 644 return sysfs_emit(buf, "%d\n", failed); 645} 646 647static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 648 struct device_attribute *attr, 649 const char *buf, size_t count) 650{ 651 struct scsi_device *sdev = to_scsi_device(dev); 652 unsigned long val; 653 654 if (kstrtoul(buf, 0, &val) || val != 0) 655 return -EINVAL; 656 657 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 658 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 659 "syufai3"); 660 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 661 662 return count; 663} 664static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 665 zfcp_sysfs_scsi_zfcp_failed_show, 666 zfcp_sysfs_scsi_zfcp_failed_store); 667 668ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 669 (atomic_read(&zfcp_sdev->status) & 670 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 671 672ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 673 atomic_read(&zfcp_sdev->status)); 674 675static struct attribute *zfcp_sdev_attrs[] = { 676 &dev_attr_fcp_lun.attr, 677 &dev_attr_wwpn.attr, 678 &dev_attr_hba_id.attr, 679 &dev_attr_read_latency.attr, 680 &dev_attr_write_latency.attr, 681 &dev_attr_cmd_latency.attr, 682 &dev_attr_zfcp_access_denied.attr, 683 &dev_attr_zfcp_failed.attr, 684 &dev_attr_zfcp_in_recovery.attr, 685 &dev_attr_zfcp_status.attr, 686 NULL 687}; 688 689static const struct attribute_group zfcp_sysfs_sdev_attr_group = { 690 .attrs = zfcp_sdev_attrs 691}; 692 693const struct attribute_group *zfcp_sysfs_sdev_attr_groups[] = { 694 &zfcp_sysfs_sdev_attr_group, 695 NULL 696}; 697 698static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 699 struct device_attribute *attr, 700 char *buf) 701{ 702 struct Scsi_Host *scsi_host = dev_to_shost(dev); 703 struct fsf_qtcb_bottom_port *qtcb_port; 704 struct zfcp_adapter *adapter; 705 int retval; 706 707 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 708 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 709 return -EOPNOTSUPP; 710 711 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 712 if (!qtcb_port) 713 return -ENOMEM; 714 715 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 716 if (retval == 0 || retval == -EAGAIN) 717 retval = sysfs_emit(buf, "%u %u %u\n", qtcb_port->cp_util, 718 qtcb_port->cb_util, qtcb_port->a_util); 719 kfree(qtcb_port); 720 return retval; 721} 722static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 723 724static int zfcp_sysfs_adapter_ex_config(struct device *dev, 725 struct fsf_statistics_info *stat_inf) 726{ 727 struct Scsi_Host *scsi_host = dev_to_shost(dev); 728 struct fsf_qtcb_bottom_config *qtcb_config; 729 struct zfcp_adapter *adapter; 730 int retval; 731 732 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 733 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 734 return -EOPNOTSUPP; 735 736 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 737 GFP_KERNEL); 738 if (!qtcb_config) 739 return -ENOMEM; 740 741 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 742 if (retval == 0 || retval == -EAGAIN) 743 *stat_inf = qtcb_config->stat_info; 744 745 kfree(qtcb_config); 746 return retval; 747} 748 749#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 750static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 751 struct device_attribute *attr,\ 752 char *buf) \ 753{ \ 754 struct fsf_statistics_info stat_info; \ 755 int retval; \ 756 \ 757 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 758 if (retval) \ 759 return retval; \ 760 \ 761 return sysfs_emit(buf, _format, ## _arg); \ 762} \ 763static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 764 765ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 766 (unsigned long long) stat_info.input_req, 767 (unsigned long long) stat_info.output_req, 768 (unsigned long long) stat_info.control_req); 769 770ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 771 (unsigned long long) stat_info.input_mb, 772 (unsigned long long) stat_info.output_mb); 773 774ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 775 (unsigned long long) stat_info.seconds_act); 776 777static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 778 struct device_attribute *attr, 779 char *buf) 780{ 781 struct Scsi_Host *scsi_host = class_to_shost(dev); 782 struct zfcp_qdio *qdio = 783 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 784 u64 util; 785 786 spin_lock_bh(&qdio->stat_lock); 787 util = qdio->req_q_util; 788 spin_unlock_bh(&qdio->stat_lock); 789 790 return sysfs_emit(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 791 (unsigned long long)util); 792} 793static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 794 795static struct attribute *zfcp_sysfs_shost_attrs[] = { 796 &dev_attr_utilization.attr, 797 &dev_attr_requests.attr, 798 &dev_attr_megabytes.attr, 799 &dev_attr_seconds_active.attr, 800 &dev_attr_queue_full.attr, 801 NULL 802}; 803 804static const struct attribute_group zfcp_sysfs_shost_attr_group = { 805 .attrs = zfcp_sysfs_shost_attrs 806}; 807 808const struct attribute_group *zfcp_sysfs_shost_attr_groups[] = { 809 &zfcp_sysfs_shost_attr_group, 810 NULL 811}; 812 813static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show( 814 struct device *dev, struct device_attribute *attr, char *buf) 815{ 816 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); 817 struct zfcp_diag_header *diag_hdr; 818 struct fc_els_flogi *nsp; 819 ssize_t rc = -ENOLINK; 820 unsigned long flags; 821 unsigned int status; 822 823 if (!adapter) 824 return -ENODEV; 825 826 status = atomic_read(&adapter->status); 827 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || 828 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || 829 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) 830 goto out; 831 832 diag_hdr = &adapter->diagnostics->config_data.header; 833 834 rc = zfcp_diag_update_buffer_limited( 835 adapter, diag_hdr, zfcp_diag_update_config_data_buffer); 836 if (rc != 0) 837 goto out; 838 839 spin_lock_irqsave(&diag_hdr->access_lock, flags); 840 /* nport_serv_param doesn't contain the ELS_Command code */ 841 nsp = (struct fc_els_flogi *)((unsigned long) 842 adapter->diagnostics->config_data 843 .data.nport_serv_param - 844 sizeof(u32)); 845 846 rc = sysfs_emit(buf, "%hu\n", be16_to_cpu(nsp->fl_csp.sp_bb_cred)); 847 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); 848 849out: 850 zfcp_ccw_adapter_put(adapter); 851 return rc; 852} 853static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400, 854 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL); 855 856#define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtfmt) \ 857 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \ 858 struct device *dev, struct device_attribute *attr, char *buf) \ 859 { \ 860 struct zfcp_adapter *const adapter = \ 861 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \ 862 struct zfcp_diag_header *diag_hdr; \ 863 ssize_t rc = -ENOLINK; \ 864 unsigned long flags; \ 865 unsigned int status; \ 866 \ 867 if (!adapter) \ 868 return -ENODEV; \ 869 \ 870 status = atomic_read(&adapter->status); \ 871 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \ 872 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \ 873 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \ 874 goto out; \ 875 \ 876 if (!zfcp_diag_support_sfp(adapter)) { \ 877 rc = -EOPNOTSUPP; \ 878 goto out; \ 879 } \ 880 \ 881 diag_hdr = &adapter->diagnostics->port_data.header; \ 882 \ 883 rc = zfcp_diag_update_buffer_limited( \ 884 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \ 885 if (rc != 0) \ 886 goto out; \ 887 \ 888 spin_lock_irqsave(&diag_hdr->access_lock, flags); \ 889 rc = sysfs_emit( \ 890 buf, _prtfmt "\n", \ 891 adapter->diagnostics->port_data.data._qtcb_member); \ 892 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \ 893 \ 894 out: \ 895 zfcp_ccw_adapter_put(adapter); \ 896 return rc; \ 897 } \ 898 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \ 899 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL) 900 901ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, "%hd"); 902ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, "%hu"); 903ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, "%hu"); 904ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, "%hu"); 905ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, "%hu"); 906ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, "%hu"); 907ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, "%hu"); 908ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, "%hu"); 909ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, "%hu"); 910ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, "%hu"); 911 912static struct attribute *zfcp_sysfs_diag_attrs[] = { 913 &dev_attr_adapter_diag_sfp_temperature.attr, 914 &dev_attr_adapter_diag_sfp_vcc.attr, 915 &dev_attr_adapter_diag_sfp_tx_bias.attr, 916 &dev_attr_adapter_diag_sfp_tx_power.attr, 917 &dev_attr_adapter_diag_sfp_rx_power.attr, 918 &dev_attr_adapter_diag_sfp_port_tx_type.attr, 919 &dev_attr_adapter_diag_sfp_optical_port.attr, 920 &dev_attr_adapter_diag_sfp_sfp_invalid.attr, 921 &dev_attr_adapter_diag_sfp_connector_type.attr, 922 &dev_attr_adapter_diag_sfp_fec_active.attr, 923 &dev_attr_adapter_diag_b2b_credit.attr, 924 NULL, 925}; 926 927static const struct attribute_group zfcp_sysfs_diag_attr_group = { 928 .name = "diagnostics", 929 .attrs = zfcp_sysfs_diag_attrs, 930}; 931 932const struct attribute_group *zfcp_sysfs_adapter_attr_groups[] = { 933 &zfcp_sysfs_adapter_attr_group, 934 &zfcp_sysfs_diag_attr_group, 935 NULL, 936};
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