1 /* 2 * zfcp device driver 3 * 4 * sysfs attributes. 5 * 6 * Copyright IBM Corporation 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 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n", 79 (zfcp_unit_sdev_status(unit) & 80 ZFCP_STATUS_LUN_SHARED) != 0); 81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n", 82 (zfcp_unit_sdev_status(unit) & 83 ZFCP_STATUS_LUN_READONLY) != 0); 84 85 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, 86 struct device_attribute *attr, 87 char *buf) 88 { 89 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 90 91 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 92 return sprintf(buf, "1\n"); 93 94 return sprintf(buf, "0\n"); 95 } 96 97 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, 98 struct device_attribute *attr, 99 const char *buf, size_t count) 100 { 101 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 102 unsigned long val; 103 104 if (strict_strtoul(buf, 0, &val) || val != 0) 105 return -EINVAL; 106 107 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); 108 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); 109 zfcp_erp_wait(port->adapter); 110 111 return count; 112 } 113 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, 114 zfcp_sysfs_port_failed_show, 115 zfcp_sysfs_port_failed_store); 116 117 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, 118 struct device_attribute *attr, 119 char *buf) 120 { 121 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 122 struct scsi_device *sdev; 123 unsigned int status, failed = 1; 124 125 sdev = zfcp_unit_sdev(unit); 126 if (sdev) { 127 status = atomic_read(&sdev_to_zfcp(sdev)->status); 128 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; 129 scsi_device_put(sdev); 130 } 131 132 return sprintf(buf, "%d\n", failed); 133 } 134 135 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, 136 struct device_attribute *attr, 137 const char *buf, size_t count) 138 { 139 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); 140 unsigned long val; 141 struct scsi_device *sdev; 142 143 if (strict_strtoul(buf, 0, &val) || val != 0) 144 return -EINVAL; 145 146 sdev = zfcp_unit_sdev(unit); 147 if (sdev) { 148 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); 149 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, 150 "syufai2"); 151 zfcp_erp_wait(unit->port->adapter); 152 } else 153 zfcp_unit_scsi_scan(unit); 154 155 return count; 156 } 157 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, 158 zfcp_sysfs_unit_failed_show, 159 zfcp_sysfs_unit_failed_store); 160 161 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, 162 struct device_attribute *attr, 163 char *buf) 164 { 165 struct ccw_device *cdev = to_ccwdev(dev); 166 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 167 int i; 168 169 if (!adapter) 170 return -ENODEV; 171 172 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) 173 i = sprintf(buf, "1\n"); 174 else 175 i = sprintf(buf, "0\n"); 176 177 zfcp_ccw_adapter_put(adapter); 178 return i; 179 } 180 181 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, 182 struct device_attribute *attr, 183 const char *buf, size_t count) 184 { 185 struct ccw_device *cdev = to_ccwdev(dev); 186 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 187 unsigned long val; 188 int retval = 0; 189 190 if (!adapter) 191 return -ENODEV; 192 193 if (strict_strtoul(buf, 0, &val) || val != 0) { 194 retval = -EINVAL; 195 goto out; 196 } 197 198 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING); 199 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 200 "syafai2"); 201 zfcp_erp_wait(adapter); 202 out: 203 zfcp_ccw_adapter_put(adapter); 204 return retval ? retval : (ssize_t) count; 205 } 206 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, 207 zfcp_sysfs_adapter_failed_show, 208 zfcp_sysfs_adapter_failed_store); 209 210 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 211 struct device_attribute *attr, 212 const char *buf, size_t count) 213 { 214 struct ccw_device *cdev = to_ccwdev(dev); 215 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 216 217 if (!adapter) 218 return -ENODEV; 219 220 /* sync the user-space- with the kernel-invocation of scan_work */ 221 queue_work(adapter->work_queue, &adapter->scan_work); 222 flush_work(&adapter->scan_work); 223 zfcp_ccw_adapter_put(adapter); 224 225 return (ssize_t) count; 226 } 227 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 228 zfcp_sysfs_port_rescan_store); 229 230 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 231 struct device_attribute *attr, 232 const char *buf, size_t count) 233 { 234 struct ccw_device *cdev = to_ccwdev(dev); 235 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); 236 struct zfcp_port *port; 237 u64 wwpn; 238 int retval = -EINVAL; 239 240 if (!adapter) 241 return -ENODEV; 242 243 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) 244 goto out; 245 246 port = zfcp_get_port_by_wwpn(adapter, wwpn); 247 if (!port) 248 goto out; 249 else 250 retval = 0; 251 252 write_lock_irq(&adapter->port_list_lock); 253 list_del(&port->list); 254 write_unlock_irq(&adapter->port_list_lock); 255 256 put_device(&port->dev); 257 258 zfcp_erp_port_shutdown(port, 0, "syprs_1"); 259 zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs); 260 out: 261 zfcp_ccw_adapter_put(adapter); 262 return retval ? retval : (ssize_t) count; 263 } 264 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 265 zfcp_sysfs_port_remove_store); 266 267 static struct attribute *zfcp_adapter_attrs[] = { 268 &dev_attr_adapter_failed.attr, 269 &dev_attr_adapter_in_recovery.attr, 270 &dev_attr_adapter_port_remove.attr, 271 &dev_attr_adapter_port_rescan.attr, 272 &dev_attr_adapter_peer_wwnn.attr, 273 &dev_attr_adapter_peer_wwpn.attr, 274 &dev_attr_adapter_peer_d_id.attr, 275 &dev_attr_adapter_card_version.attr, 276 &dev_attr_adapter_lic_version.attr, 277 &dev_attr_adapter_status.attr, 278 &dev_attr_adapter_hardware_version.attr, 279 NULL 280 }; 281 282 struct attribute_group zfcp_sysfs_adapter_attrs = { 283 .attrs = zfcp_adapter_attrs, 284 }; 285 286 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 287 struct device_attribute *attr, 288 const char *buf, size_t count) 289 { 290 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 291 u64 fcp_lun; 292 293 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 294 return -EINVAL; 295 296 if (zfcp_unit_add(port, fcp_lun)) 297 return -EINVAL; 298 299 return count; 300 } 301 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 302 303 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 304 struct device_attribute *attr, 305 const char *buf, size_t count) 306 { 307 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); 308 u64 fcp_lun; 309 310 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 311 return -EINVAL; 312 313 if (zfcp_unit_remove(port, fcp_lun)) 314 return -EINVAL; 315 316 return count; 317 } 318 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 319 320 static struct attribute *zfcp_port_attrs[] = { 321 &dev_attr_unit_add.attr, 322 &dev_attr_unit_remove.attr, 323 &dev_attr_port_failed.attr, 324 &dev_attr_port_in_recovery.attr, 325 &dev_attr_port_status.attr, 326 &dev_attr_port_access_denied.attr, 327 NULL 328 }; 329 330 /** 331 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports 332 */ 333 struct attribute_group zfcp_sysfs_port_attrs = { 334 .attrs = zfcp_port_attrs, 335 }; 336 337 static struct attribute *zfcp_unit_attrs[] = { 338 &dev_attr_unit_failed.attr, 339 &dev_attr_unit_in_recovery.attr, 340 &dev_attr_unit_status.attr, 341 &dev_attr_unit_access_denied.attr, 342 &dev_attr_unit_access_shared.attr, 343 &dev_attr_unit_access_readonly.attr, 344 NULL 345 }; 346 347 struct attribute_group zfcp_sysfs_unit_attrs = { 348 .attrs = zfcp_unit_attrs, 349 }; 350 351 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 352 static ssize_t \ 353 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 354 struct device_attribute *attr, \ 355 char *buf) { \ 356 struct scsi_device *sdev = to_scsi_device(dev); \ 357 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 358 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 359 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ 360 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 361 \ 362 spin_lock_bh(&lat->lock); \ 363 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 364 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 365 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 366 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 367 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 368 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 369 cc = lat->_name.counter; \ 370 spin_unlock_bh(&lat->lock); \ 371 \ 372 do_div(fsum, 1000); \ 373 do_div(fmin, 1000); \ 374 do_div(fmax, 1000); \ 375 do_div(csum, 1000); \ 376 do_div(cmin, 1000); \ 377 do_div(cmax, 1000); \ 378 \ 379 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 380 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 381 } \ 382 static ssize_t \ 383 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 384 struct device_attribute *attr, \ 385 const char *buf, size_t count) \ 386 { \ 387 struct scsi_device *sdev = to_scsi_device(dev); \ 388 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 389 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ 390 unsigned long flags; \ 391 \ 392 spin_lock_irqsave(&lat->lock, flags); \ 393 lat->_name.fabric.sum = 0; \ 394 lat->_name.fabric.min = 0xFFFFFFFF; \ 395 lat->_name.fabric.max = 0; \ 396 lat->_name.channel.sum = 0; \ 397 lat->_name.channel.min = 0xFFFFFFFF; \ 398 lat->_name.channel.max = 0; \ 399 lat->_name.counter = 0; \ 400 spin_unlock_irqrestore(&lat->lock, flags); \ 401 \ 402 return (ssize_t) count; \ 403 } \ 404 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 405 zfcp_sysfs_unit_##_name##_latency_show, \ 406 zfcp_sysfs_unit_##_name##_latency_store); 407 408 ZFCP_DEFINE_LATENCY_ATTR(read); 409 ZFCP_DEFINE_LATENCY_ATTR(write); 410 ZFCP_DEFINE_LATENCY_ATTR(cmd); 411 412 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 413 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 414 struct device_attribute *attr,\ 415 char *buf) \ 416 { \ 417 struct scsi_device *sdev = to_scsi_device(dev); \ 418 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ 419 struct zfcp_port *port = zfcp_sdev->port; \ 420 \ 421 return sprintf(buf, _format, _value); \ 422 } \ 423 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 424 425 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 426 dev_name(&port->adapter->ccw_device->dev)); 427 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 428 (unsigned long long) port->wwpn); 429 430 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, 431 struct device_attribute *attr, 432 char *buf) 433 { 434 struct scsi_device *sdev = to_scsi_device(dev); 435 436 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); 437 } 438 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); 439 440 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 441 &dev_attr_fcp_lun, 442 &dev_attr_wwpn, 443 &dev_attr_hba_id, 444 &dev_attr_read_latency, 445 &dev_attr_write_latency, 446 &dev_attr_cmd_latency, 447 NULL 448 }; 449 450 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 451 struct device_attribute *attr, 452 char *buf) 453 { 454 struct Scsi_Host *scsi_host = dev_to_shost(dev); 455 struct fsf_qtcb_bottom_port *qtcb_port; 456 struct zfcp_adapter *adapter; 457 int retval; 458 459 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 460 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 461 return -EOPNOTSUPP; 462 463 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 464 if (!qtcb_port) 465 return -ENOMEM; 466 467 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); 468 if (!retval) 469 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 470 qtcb_port->cb_util, qtcb_port->a_util); 471 kfree(qtcb_port); 472 return retval; 473 } 474 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 475 476 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 477 struct fsf_statistics_info *stat_inf) 478 { 479 struct Scsi_Host *scsi_host = dev_to_shost(dev); 480 struct fsf_qtcb_bottom_config *qtcb_config; 481 struct zfcp_adapter *adapter; 482 int retval; 483 484 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 485 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 486 return -EOPNOTSUPP; 487 488 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 489 GFP_KERNEL); 490 if (!qtcb_config) 491 return -ENOMEM; 492 493 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); 494 if (!retval) 495 *stat_inf = qtcb_config->stat_info; 496 497 kfree(qtcb_config); 498 return retval; 499 } 500 501 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 502 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 503 struct device_attribute *attr,\ 504 char *buf) \ 505 { \ 506 struct fsf_statistics_info stat_info; \ 507 int retval; \ 508 \ 509 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 510 if (retval) \ 511 return retval; \ 512 \ 513 return sprintf(buf, _format, ## _arg); \ 514 } \ 515 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 516 517 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 518 (unsigned long long) stat_info.input_req, 519 (unsigned long long) stat_info.output_req, 520 (unsigned long long) stat_info.control_req); 521 522 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 523 (unsigned long long) stat_info.input_mb, 524 (unsigned long long) stat_info.output_mb); 525 526 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 527 (unsigned long long) stat_info.seconds_act); 528 529 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 530 struct device_attribute *attr, 531 char *buf) 532 { 533 struct Scsi_Host *scsi_host = class_to_shost(dev); 534 struct zfcp_qdio *qdio = 535 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; 536 u64 util; 537 538 spin_lock_bh(&qdio->stat_lock); 539 util = qdio->req_q_util; 540 spin_unlock_bh(&qdio->stat_lock); 541 542 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), 543 (unsigned long long)util); 544 } 545 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 546 547 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 548 &dev_attr_utilization, 549 &dev_attr_requests, 550 &dev_attr_megabytes, 551 &dev_attr_seconds_active, 552 &dev_attr_queue_full, 553 NULL 554 }; 555