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_A_ATTR(_name, _format, _value) \ 31 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 32 struct device_attribute *at,\ 33 char *buf) \ 34 { \ 35 struct ccw_device *cdev = to_ccwdev(dev); \ 36 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ 37 int i; \ 38 \ 39 if (!adapter) \ 40 return -ENODEV; \ 41 \ 42 i = sprintf(buf, _format, _value); \ 43 zfcp_ccw_adapter_put(adapter); \ 44 return i; \ 45 } \ 46 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ 47 zfcp_sysfs_adapter_##_name##_show, NULL); 48 49 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); 50 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", 51 (unsigned long long) adapter->peer_wwnn); 52 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", 53 (unsigned long long) adapter->peer_wwpn); 54 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); 55 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); 56 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); 57 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); 58 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & 59 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 60 61 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 62 atomic_read(&port->status)); 63 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 64 (atomic_read(&port->status) & 65 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 66 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n", 67 (atomic_read(&port->status) & 68 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 69 70 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 71 zfcp_unit_sdev_status(unit)); 72 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 73 (zfcp_unit_sdev_status(unit) & 74 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 75 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 76 (zfcp_unit_sdev_status(unit) & 77 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 78 79 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, 80 struct device_attribute *attr, 81 char *buf) 82 { 83 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 84 85 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 86 return sprintf(buf, "1\n"); 87 88 return sprintf(buf, "0\n"); 89 } 90 91 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, 92 struct device_attribute *attr, 93 const char *buf, size_t count) 94 { 95 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 96 unsigned long val; 97 98 if (strict_strtoul(buf, 0, &val) || val != 0) 99 return -EINVAL; 100 101 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); 102 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); 103 zfcp_erp_wait(port->adapter); 104 105 return count; 106 } 107 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 108 zfcp_sysfs_port_failed_show, 109 zfcp_sysfs_port_failed_store); 110 111 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, 112 struct device_attribute *attr, 113 char *buf) 114 { 115 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 116 struct scsi_device *sdev; 117 unsigned int status, failed = 1; 118 119 sdev = zfcp_unit_sdev(unit); 120 if (sdev) { 121 status = atomic_read(&sdev_to_zfcp(sdev)->status); 122 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 123 scsi_device_put(sdev); 124 } 125 126 return sprintf(buf, "%d\n", failed); 127 } 128 129 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, 130 struct device_attribute *attr, 131 const char *buf, size_t count) 132 { 133 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 134 unsigned long val; 135 struct scsi_device *sdev; 136 137 if (strict_strtoul(buf, 0, &val) || val != 0) 138 return -EINVAL; 139 140 sdev = zfcp_unit_sdev(unit); 141 if (sdev) { 142 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 143 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 144 "syufai2"); 145 zfcp_erp_wait(unit->port->adapter); 146 } else 147 zfcp_unit_scsi_scan(unit); 148 149 return count; 150 } 151 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 152 zfcp_sysfs_unit_failed_show, 153 zfcp_sysfs_unit_failed_store); 154 155 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, 156 struct device_attribute *attr, 157 char *buf) 158 { 159 struct ccw_device *cdev = to_ccwdev(dev); 160 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 161 int i; 162 163 if (!adapter) 164 return -ENODEV; 165 166 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 167 i = sprintf(buf, "1\n"); 168 else 169 i = sprintf(buf, "0\n"); 170 171 zfcp_ccw_adapter_put(adapter); 172 return i; 173 } 174 175 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, 176 struct device_attribute *attr, 177 const char *buf, size_t count) 178 { 179 struct ccw_device *cdev = to_ccwdev(dev); 180 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 181 unsigned long val; 182 int retval = 0; 183 184 if (!adapter) 185 return -ENODEV; 186 187 if (strict_strtoul(buf, 0, &val) || val != 0) { 188 retval = -EINVAL; 189 goto out; 190 } 191 192 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING); 193 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 194 "syafai2"); 195 zfcp_erp_wait(adapter); 196 out: 197 zfcp_ccw_adapter_put(adapter); 198 return retval ? retval : (ssize_t) count; 199 } 200 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 201 zfcp_sysfs_adapter_failed_show, 202 zfcp_sysfs_adapter_failed_store); 203 204 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 205 struct device_attribute *attr, 206 const char *buf, size_t count) 207 { 208 struct ccw_device *cdev = to_ccwdev(dev); 209 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 210 211 if (!adapter) 212 return -ENODEV; 213 214 /* sync the user-space- with the kernel-invocation of scan_work */ 215 queue_work(adapter->work_queue, &adapter->scan_work); 216 flush_work(&adapter->scan_work); 217 zfcp_ccw_adapter_put(adapter); 218 219 return (ssize_t) count; 220 } 221 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 222 zfcp_sysfs_port_rescan_store); 223 224 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); 225 226 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 227 struct device_attribute *attr, 228 const char *buf, size_t count) 229 { 230 struct ccw_device *cdev = to_ccwdev(dev); 231 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 232 struct zfcp_port *port; 233 u64 wwpn; 234 int retval = -EINVAL; 235 236 if (!adapter) 237 return -ENODEV; 238 239 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) 240 goto out; 241 242 port = zfcp_get_port_by_wwpn(adapter, wwpn); 243 if (!port) 244 goto out; 245 else 246 retval = 0; 247 248 mutex_lock(&zfcp_sysfs_port_units_mutex); 249 if (atomic_read(&port->units) > 0) { 250 retval = -EBUSY; 251 mutex_unlock(&zfcp_sysfs_port_units_mutex); 252 goto out; 253 } 254 /* port is about to be removed, so no more unit_add */ 255 atomic_set(&port->units, -1); 256 mutex_unlock(&zfcp_sysfs_port_units_mutex); 257 258 write_lock_irq(&adapter->port_list_lock); 259 list_del(&port->list); 260 write_unlock_irq(&adapter->port_list_lock); 261 262 put_device(&port->dev); 263 264 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 265 device_unregister(&port->dev); 266 out: 267 zfcp_ccw_adapter_put(adapter); 268 return retval ? retval : (ssize_t) count; 269 } 270 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 271 zfcp_sysfs_port_remove_store); 272 273 static struct attribute *zfcp_adapter_attrs[] = { 274 &dev_attr_adapter_failed.attr, 275 &dev_attr_adapter_in_recovery.attr, 276 &dev_attr_adapter_port_remove.attr, 277 &dev_attr_adapter_port_rescan.attr, 278 &dev_attr_adapter_peer_wwnn.attr, 279 &dev_attr_adapter_peer_wwpn.attr, 280 &dev_attr_adapter_peer_d_id.attr, 281 &dev_attr_adapter_card_version.attr, 282 &dev_attr_adapter_lic_version.attr, 283 &dev_attr_adapter_status.attr, 284 &dev_attr_adapter_hardware_version.attr, 285 NULL 286 }; 287 288 struct attribute_group zfcp_sysfs_adapter_attrs = { 289 .attrs = zfcp_adapter_attrs, 290 }; 291 292 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 293 struct device_attribute *attr, 294 const char *buf, size_t count) 295 { 296 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 297 u64 fcp_lun; 298 int retval; 299 300 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 301 return -EINVAL; 302 303 retval = zfcp_unit_add(port, fcp_lun); 304 if (retval) 305 return retval; 306 307 return count; 308 } 309 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 310 311 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 312 struct device_attribute *attr, 313 const char *buf, size_t count) 314 { 315 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 316 u64 fcp_lun; 317 318 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 319 return -EINVAL; 320 321 if (zfcp_unit_remove(port, fcp_lun)) 322 return -EINVAL; 323 324 return count; 325 } 326 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 327 328 static struct attribute *zfcp_port_attrs[] = { 329 &dev_attr_unit_add.attr, 330 &dev_attr_unit_remove.attr, 331 &dev_attr_port_failed.attr, 332 &dev_attr_port_in_recovery.attr, 333 &dev_attr_port_status.attr, 334 &dev_attr_port_access_denied.attr, 335 NULL 336 }; 337 static struct attribute_group zfcp_port_attr_group = { 338 .attrs = zfcp_port_attrs, 339 }; 340 const struct attribute_group *zfcp_port_attr_groups[] = { 341 &zfcp_port_attr_group, 342 NULL, 343 }; 344 345 static struct attribute *zfcp_unit_attrs[] = { 346 &dev_attr_unit_failed.attr, 347 &dev_attr_unit_in_recovery.attr, 348 &dev_attr_unit_status.attr, 349 &dev_attr_unit_access_denied.attr, 350 NULL 351 }; 352 static struct attribute_group zfcp_unit_attr_group = { 353 .attrs = zfcp_unit_attrs, 354 }; 355 const struct attribute_group *zfcp_unit_attr_groups[] = { 356 &zfcp_unit_attr_group, 357 NULL, 358 }; 359 360 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 361 static ssize_t \ 362 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 363 struct device_attribute *attr, \ 364 char *buf) { \ 365 struct scsi_device *sdev = to_scsi_device(dev); \ 366 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 367 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 368 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 369 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 370 \ 371 spin_lock_bh(&lat->lock); \ 372 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 373 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 374 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 375 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 376 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 377 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 378 cc = lat->_name.counter; \ 379 spin_unlock_bh(&lat->lock); \ 380 \ 381 do_div(fsum, 1000); \ 382 do_div(fmin, 1000); \ 383 do_div(fmax, 1000); \ 384 do_div(csum, 1000); \ 385 do_div(cmin, 1000); \ 386 do_div(cmax, 1000); \ 387 \ 388 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 389 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 390 } \ 391 static ssize_t \ 392 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 393 struct device_attribute *attr, \ 394 const char *buf, size_t count) \ 395 { \ 396 struct scsi_device *sdev = to_scsi_device(dev); \ 397 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 398 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 399 unsigned long flags; \ 400 \ 401 spin_lock_irqsave(&lat->lock, flags); \ 402 lat->_name.fabric.sum = 0; \ 403 lat->_name.fabric.min = 0xFFFFFFFF; \ 404 lat->_name.fabric.max = 0; \ 405 lat->_name.channel.sum = 0; \ 406 lat->_name.channel.min = 0xFFFFFFFF; \ 407 lat->_name.channel.max = 0; \ 408 lat->_name.counter = 0; \ 409 spin_unlock_irqrestore(&lat->lock, flags); \ 410 \ 411 return (ssize_t) count; \ 412 } \ 413 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 414 zfcp_sysfs_unit_##_name##_latency_show, \ 415 zfcp_sysfs_unit_##_name##_latency_store); 416 417 ZFCP_DEFINE_LATENCY_ATTR(read); 418 ZFCP_DEFINE_LATENCY_ATTR(write); 419 ZFCP_DEFINE_LATENCY_ATTR(cmd); 420 421 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 422 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 423 struct device_attribute *attr,\ 424 char *buf) \ 425 { \ 426 struct scsi_device *sdev = to_scsi_device(dev); \ 427 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 428 struct zfcp_port *port = zfcp_sdev->port; \ 429 \ 430 return sprintf(buf, _format, _value); \ 431 } \ 432 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 433 434 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 435 dev_name(&port->adapter->ccw_device->dev)); 436 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 437 (unsigned long long) port->wwpn); 438 439 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 440 struct device_attribute *attr, 441 char *buf) 442 { 443 struct scsi_device *sdev = to_scsi_device(dev); 444 445 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 446 } 447 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 448 449 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 450 &dev_attr_fcp_lun, 451 &dev_attr_wwpn, 452 &dev_attr_hba_id, 453 &dev_attr_read_latency, 454 &dev_attr_write_latency, 455 &dev_attr_cmd_latency, 456 NULL 457 }; 458 459 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 460 struct device_attribute *attr, 461 char *buf) 462 { 463 struct Scsi_Host *scsi_host = dev_to_shost(dev); 464 struct fsf_qtcb_bottom_port *qtcb_port; 465 struct zfcp_adapter *adapter; 466 int retval; 467 468 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 469 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 470 return -EOPNOTSUPP; 471 472 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 473 if (!qtcb_port) 474 return -ENOMEM; 475 476 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 477 if (!retval) 478 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 479 qtcb_port->cb_util, qtcb_port->a_util); 480 kfree(qtcb_port); 481 return retval; 482 } 483 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 484 485 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 486 struct fsf_statistics_info *stat_inf) 487 { 488 struct Scsi_Host *scsi_host = dev_to_shost(dev); 489 struct fsf_qtcb_bottom_config *qtcb_config; 490 struct zfcp_adapter *adapter; 491 int retval; 492 493 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 494 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 495 return -EOPNOTSUPP; 496 497 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 498 GFP_KERNEL); 499 if (!qtcb_config) 500 return -ENOMEM; 501 502 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 503 if (!retval) 504 *stat_inf = qtcb_config->stat_info; 505 506 kfree(qtcb_config); 507 return retval; 508 } 509 510 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 511 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 512 struct device_attribute *attr,\ 513 char *buf) \ 514 { \ 515 struct fsf_statistics_info stat_info; \ 516 int retval; \ 517 \ 518 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 519 if (retval) \ 520 return retval; \ 521 \ 522 return sprintf(buf, _format, ## _arg); \ 523 } \ 524 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 525 526 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 527 (unsigned long long) stat_info.input_req, 528 (unsigned long long) stat_info.output_req, 529 (unsigned long long) stat_info.control_req); 530 531 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 532 (unsigned long long) stat_info.input_mb, 533 (unsigned long long) stat_info.output_mb); 534 535 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 536 (unsigned long long) stat_info.seconds_act); 537 538 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 539 struct device_attribute *attr, 540 char *buf) 541 { 542 struct Scsi_Host *scsi_host = class_to_shost(dev); 543 struct zfcp_qdio *qdio = 544 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 545 u64 util; 546 547 spin_lock_bh(&qdio->stat_lock); 548 util = qdio->req_q_util; 549 spin_unlock_bh(&qdio->stat_lock); 550 551 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 552 (unsigned long long)util); 553 } 554 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 555 556 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 557 &dev_attr_utilization, 558 &dev_attr_requests, 559 &dev_attr_megabytes, 560 &dev_attr_seconds_active, 561 &dev_attr_queue_full, 562 NULL 563 }; 564