1 /* 2 * zfcp device driver 3 * 4 * sysfs attributes. 5 * 6 * Copyright IBM Corp. 2008, 2010 7 */ 8 9 #define KMSG_COMPONENT "zfcp" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/slab.h> 13 #include "zfcp_ext.h" 14 15 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 16 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 17 _show, _store) 18 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 19 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 20 struct device_attribute *at,\ 21 char *buf) \ 22 { \ 23 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ 24 \ 25 return sprintf(buf, _format, _value); \ 26 } \ 27 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 28 zfcp_sysfs_##_feat##_##_name##_show, NULL); 29 30 #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ 31 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 32 struct device_attribute *at,\ 33 char *buf) \ 34 { \ 35 return sprintf(buf, _format, _value); \ 36 } \ 37 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 38 zfcp_sysfs_##_feat##_##_name##_show, NULL); 39 40 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ 41 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 42 struct device_attribute *at,\ 43 char *buf) \ 44 { \ 45 struct ccw_device *cdev = to_ccwdev(dev); \ 46 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ 47 int i; \ 48 \ 49 if (!adapter) \ 50 return -ENODEV; \ 51 \ 52 i = sprintf(buf, _format, _value); \ 53 zfcp_ccw_adapter_put(adapter); \ 54 return i; \ 55 } \ 56 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ 57 zfcp_sysfs_adapter_##_name##_show, NULL); 58 59 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); 60 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", 61 (unsigned long long) adapter->peer_wwnn); 62 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", 63 (unsigned long long) adapter->peer_wwpn); 64 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); 65 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); 66 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); 67 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); 68 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & 69 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 70 71 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 72 atomic_read(&port->status)); 73 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 74 (atomic_read(&port->status) & 75 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 76 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n", 77 (atomic_read(&port->status) & 78 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 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 (strict_strtoul(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 (strict_strtoul(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 (strict_strtoul(buf, 0, &val) || val != 0) { 200 retval = -EINVAL; 201 goto out; 202 } 203 204 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING); 205 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 206 "syafai2"); 207 zfcp_erp_wait(adapter); 208 out: 209 zfcp_ccw_adapter_put(adapter); 210 return retval ? retval : (ssize_t) count; 211 } 212 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 213 zfcp_sysfs_adapter_failed_show, 214 zfcp_sysfs_adapter_failed_store); 215 216 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 217 struct device_attribute *attr, 218 const char *buf, size_t count) 219 { 220 struct ccw_device *cdev = to_ccwdev(dev); 221 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 222 223 if (!adapter) 224 return -ENODEV; 225 226 /* sync the user-space- with the kernel-invocation of scan_work */ 227 queue_work(adapter->work_queue, &adapter->scan_work); 228 flush_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 ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 239 struct device_attribute *attr, 240 const char *buf, size_t count) 241 { 242 struct ccw_device *cdev = to_ccwdev(dev); 243 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 244 struct zfcp_port *port; 245 u64 wwpn; 246 int retval = -EINVAL; 247 248 if (!adapter) 249 return -ENODEV; 250 251 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) 252 goto out; 253 254 port = zfcp_get_port_by_wwpn(adapter, wwpn); 255 if (!port) 256 goto out; 257 else 258 retval = 0; 259 260 mutex_lock(&zfcp_sysfs_port_units_mutex); 261 if (atomic_read(&port->units) > 0) { 262 retval = -EBUSY; 263 mutex_unlock(&zfcp_sysfs_port_units_mutex); 264 goto out; 265 } 266 /* port is about to be removed, so no more unit_add */ 267 atomic_set(&port->units, -1); 268 mutex_unlock(&zfcp_sysfs_port_units_mutex); 269 270 write_lock_irq(&adapter->port_list_lock); 271 list_del(&port->list); 272 write_unlock_irq(&adapter->port_list_lock); 273 274 put_device(&port->dev); 275 276 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 277 device_unregister(&port->dev); 278 out: 279 zfcp_ccw_adapter_put(adapter); 280 return retval ? retval : (ssize_t) count; 281 } 282 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 283 zfcp_sysfs_port_remove_store); 284 285 static struct attribute *zfcp_adapter_attrs[] = { 286 &dev_attr_adapter_failed.attr, 287 &dev_attr_adapter_in_recovery.attr, 288 &dev_attr_adapter_port_remove.attr, 289 &dev_attr_adapter_port_rescan.attr, 290 &dev_attr_adapter_peer_wwnn.attr, 291 &dev_attr_adapter_peer_wwpn.attr, 292 &dev_attr_adapter_peer_d_id.attr, 293 &dev_attr_adapter_card_version.attr, 294 &dev_attr_adapter_lic_version.attr, 295 &dev_attr_adapter_status.attr, 296 &dev_attr_adapter_hardware_version.attr, 297 NULL 298 }; 299 300 struct attribute_group zfcp_sysfs_adapter_attrs = { 301 .attrs = zfcp_adapter_attrs, 302 }; 303 304 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 305 struct device_attribute *attr, 306 const char *buf, size_t count) 307 { 308 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 309 u64 fcp_lun; 310 int retval; 311 312 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 313 return -EINVAL; 314 315 retval = zfcp_unit_add(port, fcp_lun); 316 if (retval) 317 return retval; 318 319 return count; 320 } 321 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 322 323 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 324 struct device_attribute *attr, 325 const char *buf, size_t count) 326 { 327 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 328 u64 fcp_lun; 329 330 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 331 return -EINVAL; 332 333 if (zfcp_unit_remove(port, fcp_lun)) 334 return -EINVAL; 335 336 return count; 337 } 338 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 339 340 static struct attribute *zfcp_port_attrs[] = { 341 &dev_attr_unit_add.attr, 342 &dev_attr_unit_remove.attr, 343 &dev_attr_port_failed.attr, 344 &dev_attr_port_in_recovery.attr, 345 &dev_attr_port_status.attr, 346 &dev_attr_port_access_denied.attr, 347 NULL 348 }; 349 static struct attribute_group zfcp_port_attr_group = { 350 .attrs = zfcp_port_attrs, 351 }; 352 const struct attribute_group *zfcp_port_attr_groups[] = { 353 &zfcp_port_attr_group, 354 NULL, 355 }; 356 357 static struct attribute *zfcp_unit_attrs[] = { 358 &dev_attr_unit_failed.attr, 359 &dev_attr_unit_in_recovery.attr, 360 &dev_attr_unit_status.attr, 361 &dev_attr_unit_access_denied.attr, 362 &dev_attr_unit_access_shared.attr, 363 &dev_attr_unit_access_readonly.attr, 364 NULL 365 }; 366 static struct attribute_group zfcp_unit_attr_group = { 367 .attrs = zfcp_unit_attrs, 368 }; 369 const struct attribute_group *zfcp_unit_attr_groups[] = { 370 &zfcp_unit_attr_group, 371 NULL, 372 }; 373 374 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 375 static ssize_t \ 376 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 377 struct device_attribute *attr, \ 378 char *buf) { \ 379 struct scsi_device *sdev = to_scsi_device(dev); \ 380 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 381 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 382 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 383 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 384 \ 385 spin_lock_bh(&lat->lock); \ 386 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 387 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 388 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 389 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 390 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 391 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 392 cc = lat->_name.counter; \ 393 spin_unlock_bh(&lat->lock); \ 394 \ 395 do_div(fsum, 1000); \ 396 do_div(fmin, 1000); \ 397 do_div(fmax, 1000); \ 398 do_div(csum, 1000); \ 399 do_div(cmin, 1000); \ 400 do_div(cmax, 1000); \ 401 \ 402 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 403 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 404 } \ 405 static ssize_t \ 406 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 407 struct device_attribute *attr, \ 408 const char *buf, size_t count) \ 409 { \ 410 struct scsi_device *sdev = to_scsi_device(dev); \ 411 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 412 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 413 unsigned long flags; \ 414 \ 415 spin_lock_irqsave(&lat->lock, flags); \ 416 lat->_name.fabric.sum = 0; \ 417 lat->_name.fabric.min = 0xFFFFFFFF; \ 418 lat->_name.fabric.max = 0; \ 419 lat->_name.channel.sum = 0; \ 420 lat->_name.channel.min = 0xFFFFFFFF; \ 421 lat->_name.channel.max = 0; \ 422 lat->_name.counter = 0; \ 423 spin_unlock_irqrestore(&lat->lock, flags); \ 424 \ 425 return (ssize_t) count; \ 426 } \ 427 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 428 zfcp_sysfs_unit_##_name##_latency_show, \ 429 zfcp_sysfs_unit_##_name##_latency_store); 430 431 ZFCP_DEFINE_LATENCY_ATTR(read); 432 ZFCP_DEFINE_LATENCY_ATTR(write); 433 ZFCP_DEFINE_LATENCY_ATTR(cmd); 434 435 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 436 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 437 struct device_attribute *attr,\ 438 char *buf) \ 439 { \ 440 struct scsi_device *sdev = to_scsi_device(dev); \ 441 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 442 struct zfcp_port *port = zfcp_sdev->port; \ 443 \ 444 return sprintf(buf, _format, _value); \ 445 } \ 446 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 447 448 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 449 dev_name(&port->adapter->ccw_device->dev)); 450 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 451 (unsigned long long) port->wwpn); 452 453 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 454 struct device_attribute *attr, 455 char *buf) 456 { 457 struct scsi_device *sdev = to_scsi_device(dev); 458 459 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 460 } 461 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 462 463 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 464 &dev_attr_fcp_lun, 465 &dev_attr_wwpn, 466 &dev_attr_hba_id, 467 &dev_attr_read_latency, 468 &dev_attr_write_latency, 469 &dev_attr_cmd_latency, 470 NULL 471 }; 472 473 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 474 struct device_attribute *attr, 475 char *buf) 476 { 477 struct Scsi_Host *scsi_host = dev_to_shost(dev); 478 struct fsf_qtcb_bottom_port *qtcb_port; 479 struct zfcp_adapter *adapter; 480 int retval; 481 482 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 483 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 484 return -EOPNOTSUPP; 485 486 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 487 if (!qtcb_port) 488 return -ENOMEM; 489 490 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 491 if (!retval) 492 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 493 qtcb_port->cb_util, qtcb_port->a_util); 494 kfree(qtcb_port); 495 return retval; 496 } 497 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 498 499 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 500 struct fsf_statistics_info *stat_inf) 501 { 502 struct Scsi_Host *scsi_host = dev_to_shost(dev); 503 struct fsf_qtcb_bottom_config *qtcb_config; 504 struct zfcp_adapter *adapter; 505 int retval; 506 507 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 508 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 509 return -EOPNOTSUPP; 510 511 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 512 GFP_KERNEL); 513 if (!qtcb_config) 514 return -ENOMEM; 515 516 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 517 if (!retval) 518 *stat_inf = qtcb_config->stat_info; 519 520 kfree(qtcb_config); 521 return retval; 522 } 523 524 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 525 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 526 struct device_attribute *attr,\ 527 char *buf) \ 528 { \ 529 struct fsf_statistics_info stat_info; \ 530 int retval; \ 531 \ 532 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 533 if (retval) \ 534 return retval; \ 535 \ 536 return sprintf(buf, _format, ## _arg); \ 537 } \ 538 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 539 540 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 541 (unsigned long long) stat_info.input_req, 542 (unsigned long long) stat_info.output_req, 543 (unsigned long long) stat_info.control_req); 544 545 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 546 (unsigned long long) stat_info.input_mb, 547 (unsigned long long) stat_info.output_mb); 548 549 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 550 (unsigned long long) stat_info.seconds_act); 551 552 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 553 struct device_attribute *attr, 554 char *buf) 555 { 556 struct Scsi_Host *scsi_host = class_to_shost(dev); 557 struct zfcp_qdio *qdio = 558 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 559 u64 util; 560 561 spin_lock_bh(&qdio->stat_lock); 562 util = qdio->req_q_util; 563 spin_unlock_bh(&qdio->stat_lock); 564 565 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 566 (unsigned long long)util); 567 } 568 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 569 570 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 571 &dev_attr_utilization, 572 &dev_attr_requests, 573 &dev_attr_megabytes, 574 &dev_attr_seconds_active, 575 &dev_attr_queue_full, 576 NULL 577 }; 578