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_ext.h" 15 16 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 17 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 18 _show, _store) 19 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 20 static 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 sprintf(buf, _format, _value); \ 27 } \ 28 static 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) \ 32 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 33 struct device_attribute *at,\ 34 char *buf) \ 35 { \ 36 return sprintf(buf, _format, _value); \ 37 } \ 38 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 39 zfcp_sysfs_##_feat##_##_name##_show, NULL); 40 41 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ 42 static 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 = sprintf(buf, _format, _value); \ 54 zfcp_ccw_adapter_put(adapter); \ 55 return i; \ 56 } \ 57 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ 58 zfcp_sysfs_adapter_##_name##_show, NULL); 59 60 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); 61 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", 62 (unsigned long long) adapter->peer_wwnn); 63 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", 64 (unsigned long long) adapter->peer_wwpn); 65 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); 66 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); 67 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); 68 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); 69 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & 70 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 71 72 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 73 atomic_read(&port->status)); 74 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 75 (atomic_read(&port->status) & 76 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 77 ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0); 78 79 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 80 zfcp_unit_sdev_status(unit)); 81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 82 (zfcp_unit_sdev_status(unit) & 83 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 84 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 85 (zfcp_unit_sdev_status(unit) & 86 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 87 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); 88 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); 89 90 static 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 sprintf(buf, "1\n"); 98 99 return sprintf(buf, "0\n"); 100 } 101 102 static 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 } 118 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 119 zfcp_sysfs_port_failed_show, 120 zfcp_sysfs_port_failed_store); 121 122 static 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 sprintf(buf, "%d\n", failed); 138 } 139 140 static 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 } 162 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 163 zfcp_sysfs_unit_failed_show, 164 zfcp_sysfs_unit_failed_store); 165 166 static 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 = sprintf(buf, "1\n"); 179 else 180 i = sprintf(buf, "0\n"); 181 182 zfcp_ccw_adapter_put(adapter); 183 return i; 184 } 185 186 static 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"); 204 out: 205 zfcp_ccw_adapter_put(adapter); 206 return retval ? retval : (ssize_t) count; 207 } 208 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 209 zfcp_sysfs_adapter_failed_show, 210 zfcp_sysfs_adapter_failed_store); 211 212 static 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); 218 219 if (!adapter) 220 return -ENODEV; 221 222 /* 223 * Users wish is our command: immediately schedule and flush a 224 * worker to conduct a synchronous port scan, that is, neither 225 * a random delay nor a rate limit is applied here. 226 */ 227 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); 228 flush_delayed_work(&adapter->scan_work); 229 zfcp_ccw_adapter_put(adapter); 230 231 return (ssize_t) count; 232 } 233 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 234 zfcp_sysfs_port_rescan_store); 235 236 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 237 238 static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port) 239 { 240 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 241 atomic_set(&port->units, -1); 242 } 243 244 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port) 245 { 246 lockdep_assert_held(&zfcp_sysfs_port_units_mutex); 247 return atomic_read(&port->units) == -1; 248 } 249 250 static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port) 251 { 252 struct zfcp_adapter *const adapter = port->adapter; 253 unsigned long flags; 254 struct scsi_device *sdev; 255 bool in_use = true; 256 257 mutex_lock(&zfcp_sysfs_port_units_mutex); 258 if (atomic_read(&port->units) > 0) 259 goto unlock_port_units_mutex; /* zfcp_unit(s) under port */ 260 261 spin_lock_irqsave(adapter->scsi_host->host_lock, flags); 262 __shost_for_each_device(sdev, adapter->scsi_host) { 263 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev); 264 265 if (sdev->sdev_state == SDEV_DEL || 266 sdev->sdev_state == SDEV_CANCEL) 267 continue; 268 if (zsdev->port != port) 269 continue; 270 /* alive scsi_device under port of interest */ 271 goto unlock_host_lock; 272 } 273 274 /* port is about to be removed, so no more unit_add or slave_alloc */ 275 zfcp_sysfs_port_set_removing(port); 276 in_use = false; 277 278 unlock_host_lock: 279 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags); 280 unlock_port_units_mutex: 281 mutex_unlock(&zfcp_sysfs_port_units_mutex); 282 return in_use; 283 } 284 285 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 286 struct device_attribute *attr, 287 const char *buf, size_t count) 288 { 289 struct ccw_device *cdev = to_ccwdev(dev); 290 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 291 struct zfcp_port *port; 292 u64 wwpn; 293 int retval = -EINVAL; 294 295 if (!adapter) 296 return -ENODEV; 297 298 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) 299 goto out; 300 301 port = zfcp_get_port_by_wwpn(adapter, wwpn); 302 if (!port) 303 goto out; 304 else 305 retval = 0; 306 307 if (zfcp_sysfs_port_in_use(port)) { 308 retval = -EBUSY; 309 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ 310 goto out; 311 } 312 313 write_lock_irq(&adapter->port_list_lock); 314 list_del(&port->list); 315 write_unlock_irq(&adapter->port_list_lock); 316 317 put_device(&port->dev); 318 319 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 320 device_unregister(&port->dev); 321 out: 322 zfcp_ccw_adapter_put(adapter); 323 return retval ? retval : (ssize_t) count; 324 } 325 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 326 zfcp_sysfs_port_remove_store); 327 328 static struct attribute *zfcp_adapter_attrs[] = { 329 &dev_attr_adapter_failed.attr, 330 &dev_attr_adapter_in_recovery.attr, 331 &dev_attr_adapter_port_remove.attr, 332 &dev_attr_adapter_port_rescan.attr, 333 &dev_attr_adapter_peer_wwnn.attr, 334 &dev_attr_adapter_peer_wwpn.attr, 335 &dev_attr_adapter_peer_d_id.attr, 336 &dev_attr_adapter_card_version.attr, 337 &dev_attr_adapter_lic_version.attr, 338 &dev_attr_adapter_status.attr, 339 &dev_attr_adapter_hardware_version.attr, 340 NULL 341 }; 342 343 struct attribute_group zfcp_sysfs_adapter_attrs = { 344 .attrs = zfcp_adapter_attrs, 345 }; 346 347 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 348 struct device_attribute *attr, 349 const char *buf, size_t count) 350 { 351 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 352 u64 fcp_lun; 353 int retval; 354 355 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 356 return -EINVAL; 357 358 retval = zfcp_unit_add(port, fcp_lun); 359 if (retval) 360 return retval; 361 362 return count; 363 } 364 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 365 366 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 367 struct device_attribute *attr, 368 const char *buf, size_t count) 369 { 370 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 371 u64 fcp_lun; 372 373 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 374 return -EINVAL; 375 376 if (zfcp_unit_remove(port, fcp_lun)) 377 return -EINVAL; 378 379 return count; 380 } 381 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 382 383 static struct attribute *zfcp_port_attrs[] = { 384 &dev_attr_unit_add.attr, 385 &dev_attr_unit_remove.attr, 386 &dev_attr_port_failed.attr, 387 &dev_attr_port_in_recovery.attr, 388 &dev_attr_port_status.attr, 389 &dev_attr_port_access_denied.attr, 390 NULL 391 }; 392 static struct attribute_group zfcp_port_attr_group = { 393 .attrs = zfcp_port_attrs, 394 }; 395 const struct attribute_group *zfcp_port_attr_groups[] = { 396 &zfcp_port_attr_group, 397 NULL, 398 }; 399 400 static struct attribute *zfcp_unit_attrs[] = { 401 &dev_attr_unit_failed.attr, 402 &dev_attr_unit_in_recovery.attr, 403 &dev_attr_unit_status.attr, 404 &dev_attr_unit_access_denied.attr, 405 &dev_attr_unit_access_shared.attr, 406 &dev_attr_unit_access_readonly.attr, 407 NULL 408 }; 409 static struct attribute_group zfcp_unit_attr_group = { 410 .attrs = zfcp_unit_attrs, 411 }; 412 const struct attribute_group *zfcp_unit_attr_groups[] = { 413 &zfcp_unit_attr_group, 414 NULL, 415 }; 416 417 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 418 static ssize_t \ 419 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 420 struct device_attribute *attr, \ 421 char *buf) { \ 422 struct scsi_device *sdev = to_scsi_device(dev); \ 423 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 424 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 425 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 426 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 427 \ 428 spin_lock_bh(&lat->lock); \ 429 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 430 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 431 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 432 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 433 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 434 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 435 cc = lat->_name.counter; \ 436 spin_unlock_bh(&lat->lock); \ 437 \ 438 do_div(fsum, 1000); \ 439 do_div(fmin, 1000); \ 440 do_div(fmax, 1000); \ 441 do_div(csum, 1000); \ 442 do_div(cmin, 1000); \ 443 do_div(cmax, 1000); \ 444 \ 445 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 446 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 447 } \ 448 static ssize_t \ 449 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 450 struct device_attribute *attr, \ 451 const char *buf, size_t count) \ 452 { \ 453 struct scsi_device *sdev = to_scsi_device(dev); \ 454 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 455 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 456 unsigned long flags; \ 457 \ 458 spin_lock_irqsave(&lat->lock, flags); \ 459 lat->_name.fabric.sum = 0; \ 460 lat->_name.fabric.min = 0xFFFFFFFF; \ 461 lat->_name.fabric.max = 0; \ 462 lat->_name.channel.sum = 0; \ 463 lat->_name.channel.min = 0xFFFFFFFF; \ 464 lat->_name.channel.max = 0; \ 465 lat->_name.counter = 0; \ 466 spin_unlock_irqrestore(&lat->lock, flags); \ 467 \ 468 return (ssize_t) count; \ 469 } \ 470 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 471 zfcp_sysfs_unit_##_name##_latency_show, \ 472 zfcp_sysfs_unit_##_name##_latency_store); 473 474 ZFCP_DEFINE_LATENCY_ATTR(read); 475 ZFCP_DEFINE_LATENCY_ATTR(write); 476 ZFCP_DEFINE_LATENCY_ATTR(cmd); 477 478 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 479 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 480 struct device_attribute *attr,\ 481 char *buf) \ 482 { \ 483 struct scsi_device *sdev = to_scsi_device(dev); \ 484 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 485 \ 486 return sprintf(buf, _format, _value); \ 487 } \ 488 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 489 490 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 491 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 492 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 493 (unsigned long long) zfcp_sdev->port->wwpn); 494 495 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 496 struct device_attribute *attr, 497 char *buf) 498 { 499 struct scsi_device *sdev = to_scsi_device(dev); 500 501 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 502 } 503 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 504 505 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 506 (atomic_read(&zfcp_sdev->status) & 507 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 508 509 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 510 struct device_attribute *attr, 511 char *buf) 512 { 513 struct scsi_device *sdev = to_scsi_device(dev); 514 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 515 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 516 517 return sprintf(buf, "%d\n", failed); 518 } 519 520 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 521 struct device_attribute *attr, 522 const char *buf, size_t count) 523 { 524 struct scsi_device *sdev = to_scsi_device(dev); 525 unsigned long val; 526 527 if (kstrtoul(buf, 0, &val) || val != 0) 528 return -EINVAL; 529 530 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 531 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 532 "syufai3"); 533 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 534 535 return count; 536 } 537 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 538 zfcp_sysfs_scsi_zfcp_failed_show, 539 zfcp_sysfs_scsi_zfcp_failed_store); 540 541 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 542 (atomic_read(&zfcp_sdev->status) & 543 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 544 545 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 546 atomic_read(&zfcp_sdev->status)); 547 548 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 549 &dev_attr_fcp_lun, 550 &dev_attr_wwpn, 551 &dev_attr_hba_id, 552 &dev_attr_read_latency, 553 &dev_attr_write_latency, 554 &dev_attr_cmd_latency, 555 &dev_attr_zfcp_access_denied, 556 &dev_attr_zfcp_failed, 557 &dev_attr_zfcp_in_recovery, 558 &dev_attr_zfcp_status, 559 NULL 560 }; 561 562 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 563 struct device_attribute *attr, 564 char *buf) 565 { 566 struct Scsi_Host *scsi_host = dev_to_shost(dev); 567 struct fsf_qtcb_bottom_port *qtcb_port; 568 struct zfcp_adapter *adapter; 569 int retval; 570 571 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 572 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 573 return -EOPNOTSUPP; 574 575 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 576 if (!qtcb_port) 577 return -ENOMEM; 578 579 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 580 if (!retval) 581 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 582 qtcb_port->cb_util, qtcb_port->a_util); 583 kfree(qtcb_port); 584 return retval; 585 } 586 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 587 588 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 589 struct fsf_statistics_info *stat_inf) 590 { 591 struct Scsi_Host *scsi_host = dev_to_shost(dev); 592 struct fsf_qtcb_bottom_config *qtcb_config; 593 struct zfcp_adapter *adapter; 594 int retval; 595 596 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 597 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 598 return -EOPNOTSUPP; 599 600 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 601 GFP_KERNEL); 602 if (!qtcb_config) 603 return -ENOMEM; 604 605 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 606 if (!retval) 607 *stat_inf = qtcb_config->stat_info; 608 609 kfree(qtcb_config); 610 return retval; 611 } 612 613 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 614 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 615 struct device_attribute *attr,\ 616 char *buf) \ 617 { \ 618 struct fsf_statistics_info stat_info; \ 619 int retval; \ 620 \ 621 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 622 if (retval) \ 623 return retval; \ 624 \ 625 return sprintf(buf, _format, ## _arg); \ 626 } \ 627 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 628 629 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 630 (unsigned long long) stat_info.input_req, 631 (unsigned long long) stat_info.output_req, 632 (unsigned long long) stat_info.control_req); 633 634 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 635 (unsigned long long) stat_info.input_mb, 636 (unsigned long long) stat_info.output_mb); 637 638 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 639 (unsigned long long) stat_info.seconds_act); 640 641 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 642 struct device_attribute *attr, 643 char *buf) 644 { 645 struct Scsi_Host *scsi_host = class_to_shost(dev); 646 struct zfcp_qdio *qdio = 647 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 648 u64 util; 649 650 spin_lock_bh(&qdio->stat_lock); 651 util = qdio->req_q_util; 652 spin_unlock_bh(&qdio->stat_lock); 653 654 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 655 (unsigned long long)util); 656 } 657 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 658 659 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 660 &dev_attr_utilization, 661 &dev_attr_requests, 662 &dev_attr_megabytes, 663 &dev_attr_seconds_active, 664 &dev_attr_queue_full, 665 NULL 666 }; 667