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_CONST(port, access_denied, "%d\n", 0); 77 78 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 79 zfcp_unit_sdev_status(unit)); 80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 81 (zfcp_unit_sdev_status(unit) & 82 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 83 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 84 (zfcp_unit_sdev_status(unit) & 85 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 86 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); 87 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); 88 89 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, 90 struct device_attribute *attr, 91 char *buf) 92 { 93 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 94 95 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 96 return sprintf(buf, "1\n"); 97 98 return sprintf(buf, "0\n"); 99 } 100 101 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, 102 struct device_attribute *attr, 103 const char *buf, size_t count) 104 { 105 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 106 unsigned long val; 107 108 if (kstrtoul(buf, 0, &val) || val != 0) 109 return -EINVAL; 110 111 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); 112 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); 113 zfcp_erp_wait(port->adapter); 114 115 return count; 116 } 117 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 118 zfcp_sysfs_port_failed_show, 119 zfcp_sysfs_port_failed_store); 120 121 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, 122 struct device_attribute *attr, 123 char *buf) 124 { 125 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 126 struct scsi_device *sdev; 127 unsigned int status, failed = 1; 128 129 sdev = zfcp_unit_sdev(unit); 130 if (sdev) { 131 status = atomic_read(&sdev_to_zfcp(sdev)->status); 132 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 133 scsi_device_put(sdev); 134 } 135 136 return sprintf(buf, "%d\n", failed); 137 } 138 139 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, 140 struct device_attribute *attr, 141 const char *buf, size_t count) 142 { 143 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 144 unsigned long val; 145 struct scsi_device *sdev; 146 147 if (kstrtoul(buf, 0, &val) || val != 0) 148 return -EINVAL; 149 150 sdev = zfcp_unit_sdev(unit); 151 if (sdev) { 152 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 153 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 154 "syufai2"); 155 zfcp_erp_wait(unit->port->adapter); 156 } else 157 zfcp_unit_scsi_scan(unit); 158 159 return count; 160 } 161 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 162 zfcp_sysfs_unit_failed_show, 163 zfcp_sysfs_unit_failed_store); 164 165 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, 166 struct device_attribute *attr, 167 char *buf) 168 { 169 struct ccw_device *cdev = to_ccwdev(dev); 170 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 171 int i; 172 173 if (!adapter) 174 return -ENODEV; 175 176 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 177 i = sprintf(buf, "1\n"); 178 else 179 i = sprintf(buf, "0\n"); 180 181 zfcp_ccw_adapter_put(adapter); 182 return i; 183 } 184 185 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, 186 struct device_attribute *attr, 187 const char *buf, size_t count) 188 { 189 struct ccw_device *cdev = to_ccwdev(dev); 190 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 191 unsigned long val; 192 int retval = 0; 193 194 if (!adapter) 195 return -ENODEV; 196 197 if (kstrtoul(buf, 0, &val) || val != 0) { 198 retval = -EINVAL; 199 goto out; 200 } 201 202 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING); 203 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 204 "syafai2"); 205 zfcp_erp_wait(adapter); 206 out: 207 zfcp_ccw_adapter_put(adapter); 208 return retval ? retval : (ssize_t) count; 209 } 210 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 211 zfcp_sysfs_adapter_failed_show, 212 zfcp_sysfs_adapter_failed_store); 213 214 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 215 struct device_attribute *attr, 216 const char *buf, size_t count) 217 { 218 struct ccw_device *cdev = to_ccwdev(dev); 219 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 220 221 if (!adapter) 222 return -ENODEV; 223 224 /* 225 * Users wish is our command: immediately schedule and flush a 226 * worker to conduct a synchronous port scan, that is, neither 227 * a random delay nor a rate limit is applied here. 228 */ 229 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); 230 flush_delayed_work(&adapter->scan_work); 231 zfcp_ccw_adapter_put(adapter); 232 233 return (ssize_t) count; 234 } 235 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 236 zfcp_sysfs_port_rescan_store); 237 238 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 239 240 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 241 struct device_attribute *attr, 242 const char *buf, size_t count) 243 { 244 struct ccw_device *cdev = to_ccwdev(dev); 245 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 246 struct zfcp_port *port; 247 u64 wwpn; 248 int retval = -EINVAL; 249 250 if (!adapter) 251 return -ENODEV; 252 253 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) 254 goto out; 255 256 port = zfcp_get_port_by_wwpn(adapter, wwpn); 257 if (!port) 258 goto out; 259 else 260 retval = 0; 261 262 mutex_lock(&zfcp_sysfs_port_units_mutex); 263 if (atomic_read(&port->units) > 0) { 264 retval = -EBUSY; 265 mutex_unlock(&zfcp_sysfs_port_units_mutex); 266 goto out; 267 } 268 /* port is about to be removed, so no more unit_add */ 269 atomic_set(&port->units, -1); 270 mutex_unlock(&zfcp_sysfs_port_units_mutex); 271 272 write_lock_irq(&adapter->port_list_lock); 273 list_del(&port->list); 274 write_unlock_irq(&adapter->port_list_lock); 275 276 put_device(&port->dev); 277 278 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 279 device_unregister(&port->dev); 280 out: 281 zfcp_ccw_adapter_put(adapter); 282 return retval ? retval : (ssize_t) count; 283 } 284 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 285 zfcp_sysfs_port_remove_store); 286 287 static struct attribute *zfcp_adapter_attrs[] = { 288 &dev_attr_adapter_failed.attr, 289 &dev_attr_adapter_in_recovery.attr, 290 &dev_attr_adapter_port_remove.attr, 291 &dev_attr_adapter_port_rescan.attr, 292 &dev_attr_adapter_peer_wwnn.attr, 293 &dev_attr_adapter_peer_wwpn.attr, 294 &dev_attr_adapter_peer_d_id.attr, 295 &dev_attr_adapter_card_version.attr, 296 &dev_attr_adapter_lic_version.attr, 297 &dev_attr_adapter_status.attr, 298 &dev_attr_adapter_hardware_version.attr, 299 NULL 300 }; 301 302 struct attribute_group zfcp_sysfs_adapter_attrs = { 303 .attrs = zfcp_adapter_attrs, 304 }; 305 306 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 307 struct device_attribute *attr, 308 const char *buf, size_t count) 309 { 310 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 311 u64 fcp_lun; 312 int retval; 313 314 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 315 return -EINVAL; 316 317 retval = zfcp_unit_add(port, fcp_lun); 318 if (retval) 319 return retval; 320 321 return count; 322 } 323 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 324 325 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 326 struct device_attribute *attr, 327 const char *buf, size_t count) 328 { 329 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 330 u64 fcp_lun; 331 332 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) 333 return -EINVAL; 334 335 if (zfcp_unit_remove(port, fcp_lun)) 336 return -EINVAL; 337 338 return count; 339 } 340 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 341 342 static struct attribute *zfcp_port_attrs[] = { 343 &dev_attr_unit_add.attr, 344 &dev_attr_unit_remove.attr, 345 &dev_attr_port_failed.attr, 346 &dev_attr_port_in_recovery.attr, 347 &dev_attr_port_status.attr, 348 &dev_attr_port_access_denied.attr, 349 NULL 350 }; 351 static struct attribute_group zfcp_port_attr_group = { 352 .attrs = zfcp_port_attrs, 353 }; 354 const struct attribute_group *zfcp_port_attr_groups[] = { 355 &zfcp_port_attr_group, 356 NULL, 357 }; 358 359 static struct attribute *zfcp_unit_attrs[] = { 360 &dev_attr_unit_failed.attr, 361 &dev_attr_unit_in_recovery.attr, 362 &dev_attr_unit_status.attr, 363 &dev_attr_unit_access_denied.attr, 364 &dev_attr_unit_access_shared.attr, 365 &dev_attr_unit_access_readonly.attr, 366 NULL 367 }; 368 static struct attribute_group zfcp_unit_attr_group = { 369 .attrs = zfcp_unit_attrs, 370 }; 371 const struct attribute_group *zfcp_unit_attr_groups[] = { 372 &zfcp_unit_attr_group, 373 NULL, 374 }; 375 376 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 377 static ssize_t \ 378 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 379 struct device_attribute *attr, \ 380 char *buf) { \ 381 struct scsi_device *sdev = to_scsi_device(dev); \ 382 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 383 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 384 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 385 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 386 \ 387 spin_lock_bh(&lat->lock); \ 388 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 389 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 390 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 391 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 392 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 393 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 394 cc = lat->_name.counter; \ 395 spin_unlock_bh(&lat->lock); \ 396 \ 397 do_div(fsum, 1000); \ 398 do_div(fmin, 1000); \ 399 do_div(fmax, 1000); \ 400 do_div(csum, 1000); \ 401 do_div(cmin, 1000); \ 402 do_div(cmax, 1000); \ 403 \ 404 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 405 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 406 } \ 407 static ssize_t \ 408 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 409 struct device_attribute *attr, \ 410 const char *buf, size_t count) \ 411 { \ 412 struct scsi_device *sdev = to_scsi_device(dev); \ 413 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 414 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 415 unsigned long flags; \ 416 \ 417 spin_lock_irqsave(&lat->lock, flags); \ 418 lat->_name.fabric.sum = 0; \ 419 lat->_name.fabric.min = 0xFFFFFFFF; \ 420 lat->_name.fabric.max = 0; \ 421 lat->_name.channel.sum = 0; \ 422 lat->_name.channel.min = 0xFFFFFFFF; \ 423 lat->_name.channel.max = 0; \ 424 lat->_name.counter = 0; \ 425 spin_unlock_irqrestore(&lat->lock, flags); \ 426 \ 427 return (ssize_t) count; \ 428 } \ 429 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 430 zfcp_sysfs_unit_##_name##_latency_show, \ 431 zfcp_sysfs_unit_##_name##_latency_store); 432 433 ZFCP_DEFINE_LATENCY_ATTR(read); 434 ZFCP_DEFINE_LATENCY_ATTR(write); 435 ZFCP_DEFINE_LATENCY_ATTR(cmd); 436 437 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 438 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 439 struct device_attribute *attr,\ 440 char *buf) \ 441 { \ 442 struct scsi_device *sdev = to_scsi_device(dev); \ 443 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 444 \ 445 return sprintf(buf, _format, _value); \ 446 } \ 447 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 448 449 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 450 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); 451 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 452 (unsigned long long) zfcp_sdev->port->wwpn); 453 454 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 455 struct device_attribute *attr, 456 char *buf) 457 { 458 struct scsi_device *sdev = to_scsi_device(dev); 459 460 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 461 } 462 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 463 464 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", 465 (atomic_read(&zfcp_sdev->status) & 466 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 467 468 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, 469 struct device_attribute *attr, 470 char *buf) 471 { 472 struct scsi_device *sdev = to_scsi_device(dev); 473 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); 474 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 475 476 return sprintf(buf, "%d\n", failed); 477 } 478 479 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, 480 struct device_attribute *attr, 481 const char *buf, size_t count) 482 { 483 struct scsi_device *sdev = to_scsi_device(dev); 484 unsigned long val; 485 486 if (kstrtoul(buf, 0, &val) || val != 0) 487 return -EINVAL; 488 489 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 490 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 491 "syufai3"); 492 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); 493 494 return count; 495 } 496 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, 497 zfcp_sysfs_scsi_zfcp_failed_show, 498 zfcp_sysfs_scsi_zfcp_failed_store); 499 500 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", 501 (atomic_read(&zfcp_sdev->status) & 502 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 503 504 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", 505 atomic_read(&zfcp_sdev->status)); 506 507 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 508 &dev_attr_fcp_lun, 509 &dev_attr_wwpn, 510 &dev_attr_hba_id, 511 &dev_attr_read_latency, 512 &dev_attr_write_latency, 513 &dev_attr_cmd_latency, 514 &dev_attr_zfcp_access_denied, 515 &dev_attr_zfcp_failed, 516 &dev_attr_zfcp_in_recovery, 517 &dev_attr_zfcp_status, 518 NULL 519 }; 520 521 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 522 struct device_attribute *attr, 523 char *buf) 524 { 525 struct Scsi_Host *scsi_host = dev_to_shost(dev); 526 struct fsf_qtcb_bottom_port *qtcb_port; 527 struct zfcp_adapter *adapter; 528 int retval; 529 530 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 531 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 532 return -EOPNOTSUPP; 533 534 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 535 if (!qtcb_port) 536 return -ENOMEM; 537 538 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 539 if (!retval) 540 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 541 qtcb_port->cb_util, qtcb_port->a_util); 542 kfree(qtcb_port); 543 return retval; 544 } 545 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 546 547 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 548 struct fsf_statistics_info *stat_inf) 549 { 550 struct Scsi_Host *scsi_host = dev_to_shost(dev); 551 struct fsf_qtcb_bottom_config *qtcb_config; 552 struct zfcp_adapter *adapter; 553 int retval; 554 555 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 556 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 557 return -EOPNOTSUPP; 558 559 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 560 GFP_KERNEL); 561 if (!qtcb_config) 562 return -ENOMEM; 563 564 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 565 if (!retval) 566 *stat_inf = qtcb_config->stat_info; 567 568 kfree(qtcb_config); 569 return retval; 570 } 571 572 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 573 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 574 struct device_attribute *attr,\ 575 char *buf) \ 576 { \ 577 struct fsf_statistics_info stat_info; \ 578 int retval; \ 579 \ 580 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 581 if (retval) \ 582 return retval; \ 583 \ 584 return sprintf(buf, _format, ## _arg); \ 585 } \ 586 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 587 588 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 589 (unsigned long long) stat_info.input_req, 590 (unsigned long long) stat_info.output_req, 591 (unsigned long long) stat_info.control_req); 592 593 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 594 (unsigned long long) stat_info.input_mb, 595 (unsigned long long) stat_info.output_mb); 596 597 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 598 (unsigned long long) stat_info.seconds_act); 599 600 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 601 struct device_attribute *attr, 602 char *buf) 603 { 604 struct Scsi_Host *scsi_host = class_to_shost(dev); 605 struct zfcp_qdio *qdio = 606 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 607 u64 util; 608 609 spin_lock_bh(&qdio->stat_lock); 610 util = qdio->req_q_util; 611 spin_unlock_bh(&qdio->stat_lock); 612 613 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 614 (unsigned long long)util); 615 } 616 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 617 618 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 619 &dev_attr_utilization, 620 &dev_attr_requests, 621 &dev_attr_megabytes, 622 &dev_attr_seconds_active, 623 &dev_attr_queue_full, 624 NULL 625 }; 626