1 /* 2 * zfcp device driver 3 * 4 * sysfs attributes. 5 * 6 * Copyright IBM Corporation 2008 7 */ 8 9 #include "zfcp_ext.h" 10 11 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 12 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 13 _show, _store) 14 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 15 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 16 struct device_attribute *at,\ 17 char *buf) \ 18 { \ 19 struct _feat_def *_feat = dev_get_drvdata(dev); \ 20 \ 21 return sprintf(buf, _format, _value); \ 22 } \ 23 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 24 zfcp_sysfs_##_feat##_##_name##_show, NULL); 25 26 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n", 27 atomic_read(&adapter->status)); 28 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n", 29 adapter->peer_wwnn); 30 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n", 31 adapter->peer_wwpn); 32 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n", 33 adapter->peer_d_id); 34 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n", 35 adapter->hydra_version); 36 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n", 37 adapter->fsf_lic_version); 38 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n", 39 adapter->hardware_version); 40 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n", 41 (atomic_read(&adapter->status) & 42 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 43 44 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 45 atomic_read(&port->status)); 46 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 47 (atomic_read(&port->status) & 48 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 49 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n", 50 (atomic_read(&port->status) & 51 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 52 53 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 54 atomic_read(&unit->status)); 55 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 56 (atomic_read(&unit->status) & 57 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 58 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 59 (atomic_read(&unit->status) & 60 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 61 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n", 62 (atomic_read(&unit->status) & 63 ZFCP_STATUS_UNIT_SHARED) != 0); 64 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n", 65 (atomic_read(&unit->status) & 66 ZFCP_STATUS_UNIT_READONLY) != 0); 67 68 #define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \ 69 static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \ 70 struct device_attribute *attr, \ 71 char *buf) \ 72 { \ 73 struct _feat_def *_feat = dev_get_drvdata(dev); \ 74 \ 75 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \ 76 return sprintf(buf, "1\n"); \ 77 else \ 78 return sprintf(buf, "0\n"); \ 79 } \ 80 static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \ 81 struct device_attribute *attr,\ 82 const char *buf, size_t count)\ 83 { \ 84 struct _feat_def *_feat = dev_get_drvdata(dev); \ 85 unsigned long val; \ 86 int retval = 0; \ 87 \ 88 down(&zfcp_data.config_sema); \ 89 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \ 90 retval = -EBUSY; \ 91 goto out; \ 92 } \ 93 \ 94 if (strict_strtoul(buf, 0, &val) || val != 0) { \ 95 retval = -EINVAL; \ 96 goto out; \ 97 } \ 98 \ 99 zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \ 100 ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\ 101 zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \ 102 _reopen_id, NULL); \ 103 zfcp_erp_wait(_adapter); \ 104 out: \ 105 up(&zfcp_data.config_sema); \ 106 return retval ? retval : (ssize_t) count; \ 107 } \ 108 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \ 109 zfcp_sysfs_##_feat##_failed_show, \ 110 zfcp_sysfs_##_feat##_failed_store); 111 112 ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, 44, 93); 113 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96); 114 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97); 115 116 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 117 struct device_attribute *attr, 118 const char *buf, size_t count) 119 { 120 struct zfcp_adapter *adapter = dev_get_drvdata(dev); 121 int ret; 122 123 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) 124 return -EBUSY; 125 126 ret = zfcp_scan_ports(adapter); 127 return ret ? ret : (ssize_t) count; 128 } 129 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 130 zfcp_sysfs_port_rescan_store); 131 132 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 133 struct device_attribute *attr, 134 const char *buf, size_t count) 135 { 136 struct zfcp_adapter *adapter = dev_get_drvdata(dev); 137 struct zfcp_port *port; 138 wwn_t wwpn; 139 int retval = 0; 140 141 down(&zfcp_data.config_sema); 142 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { 143 retval = -EBUSY; 144 goto out; 145 } 146 147 if (strict_strtoull(buf, 0, &wwpn)) { 148 retval = -EINVAL; 149 goto out; 150 } 151 152 write_lock_irq(&zfcp_data.config_lock); 153 port = zfcp_get_port_by_wwpn(adapter, wwpn); 154 if (port && (atomic_read(&port->refcount) == 0)) { 155 zfcp_port_get(port); 156 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); 157 list_move(&port->list, &adapter->port_remove_lh); 158 } else 159 port = NULL; 160 write_unlock_irq(&zfcp_data.config_lock); 161 162 if (!port) { 163 retval = -ENXIO; 164 goto out; 165 } 166 167 zfcp_erp_port_shutdown(port, 0, 92, NULL); 168 zfcp_erp_wait(adapter); 169 zfcp_port_put(port); 170 zfcp_port_dequeue(port); 171 out: 172 up(&zfcp_data.config_sema); 173 return retval ? retval : (ssize_t) count; 174 } 175 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 176 zfcp_sysfs_port_remove_store); 177 178 static struct attribute *zfcp_adapter_attrs[] = { 179 &dev_attr_adapter_failed.attr, 180 &dev_attr_adapter_in_recovery.attr, 181 &dev_attr_adapter_port_remove.attr, 182 &dev_attr_adapter_port_rescan.attr, 183 &dev_attr_adapter_peer_wwnn.attr, 184 &dev_attr_adapter_peer_wwpn.attr, 185 &dev_attr_adapter_peer_d_id.attr, 186 &dev_attr_adapter_card_version.attr, 187 &dev_attr_adapter_lic_version.attr, 188 &dev_attr_adapter_status.attr, 189 &dev_attr_adapter_hardware_version.attr, 190 NULL 191 }; 192 193 struct attribute_group zfcp_sysfs_adapter_attrs = { 194 .attrs = zfcp_adapter_attrs, 195 }; 196 197 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 198 struct device_attribute *attr, 199 const char *buf, size_t count) 200 { 201 struct zfcp_port *port = dev_get_drvdata(dev); 202 struct zfcp_unit *unit; 203 fcp_lun_t fcp_lun; 204 int retval = -EINVAL; 205 206 down(&zfcp_data.config_sema); 207 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 208 retval = -EBUSY; 209 goto out; 210 } 211 212 if (strict_strtoull(buf, 0, &fcp_lun)) 213 goto out; 214 215 unit = zfcp_unit_enqueue(port, fcp_lun); 216 if (IS_ERR(unit)) 217 goto out; 218 219 retval = 0; 220 221 zfcp_erp_unit_reopen(unit, 0, 94, NULL); 222 zfcp_erp_wait(unit->port->adapter); 223 zfcp_unit_put(unit); 224 out: 225 up(&zfcp_data.config_sema); 226 return retval ? retval : (ssize_t) count; 227 } 228 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 229 230 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 231 struct device_attribute *attr, 232 const char *buf, size_t count) 233 { 234 struct zfcp_port *port = dev_get_drvdata(dev); 235 struct zfcp_unit *unit; 236 fcp_lun_t fcp_lun; 237 int retval = 0; 238 239 down(&zfcp_data.config_sema); 240 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 241 retval = -EBUSY; 242 goto out; 243 } 244 245 if (strict_strtoull(buf, 0, &fcp_lun)) { 246 retval = -EINVAL; 247 goto out; 248 } 249 250 write_lock_irq(&zfcp_data.config_lock); 251 unit = zfcp_get_unit_by_lun(port, fcp_lun); 252 if (unit && (atomic_read(&unit->refcount) == 0)) { 253 zfcp_unit_get(unit); 254 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); 255 list_move(&unit->list, &port->unit_remove_lh); 256 } else 257 unit = NULL; 258 259 write_unlock_irq(&zfcp_data.config_lock); 260 261 if (!unit) { 262 retval = -ENXIO; 263 goto out; 264 } 265 266 zfcp_erp_unit_shutdown(unit, 0, 95, NULL); 267 zfcp_erp_wait(unit->port->adapter); 268 zfcp_unit_put(unit); 269 zfcp_unit_dequeue(unit); 270 out: 271 up(&zfcp_data.config_sema); 272 return retval ? retval : (ssize_t) count; 273 } 274 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 275 276 static struct attribute *zfcp_port_ns_attrs[] = { 277 &dev_attr_port_failed.attr, 278 &dev_attr_port_in_recovery.attr, 279 &dev_attr_port_status.attr, 280 &dev_attr_port_access_denied.attr, 281 NULL 282 }; 283 284 /** 285 * zfcp_sysfs_ns_port_attrs - sysfs attributes for nameserver 286 */ 287 struct attribute_group zfcp_sysfs_ns_port_attrs = { 288 .attrs = zfcp_port_ns_attrs, 289 }; 290 291 static struct attribute *zfcp_port_no_ns_attrs[] = { 292 &dev_attr_unit_add.attr, 293 &dev_attr_unit_remove.attr, 294 &dev_attr_port_failed.attr, 295 &dev_attr_port_in_recovery.attr, 296 &dev_attr_port_status.attr, 297 &dev_attr_port_access_denied.attr, 298 NULL 299 }; 300 301 /** 302 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports 303 */ 304 struct attribute_group zfcp_sysfs_port_attrs = { 305 .attrs = zfcp_port_no_ns_attrs, 306 }; 307 308 static struct attribute *zfcp_unit_attrs[] = { 309 &dev_attr_unit_failed.attr, 310 &dev_attr_unit_in_recovery.attr, 311 &dev_attr_unit_status.attr, 312 &dev_attr_unit_access_denied.attr, 313 &dev_attr_unit_access_shared.attr, 314 &dev_attr_unit_access_readonly.attr, 315 NULL 316 }; 317 318 struct attribute_group zfcp_sysfs_unit_attrs = { 319 .attrs = zfcp_unit_attrs, 320 }; 321 322 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 323 static ssize_t \ 324 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 325 struct device_attribute *attr, \ 326 char *buf) { \ 327 struct scsi_device *sdev = to_scsi_device(dev); \ 328 struct zfcp_unit *unit = sdev->hostdata; \ 329 struct zfcp_latencies *lat = &unit->latencies; \ 330 struct zfcp_adapter *adapter = unit->port->adapter; \ 331 unsigned long flags; \ 332 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 333 \ 334 spin_lock_irqsave(&lat->lock, flags); \ 335 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 336 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 337 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 338 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 339 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 340 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 341 cc = lat->_name.counter; \ 342 spin_unlock_irqrestore(&lat->lock, flags); \ 343 \ 344 do_div(fsum, 1000); \ 345 do_div(fmin, 1000); \ 346 do_div(fmax, 1000); \ 347 do_div(csum, 1000); \ 348 do_div(cmin, 1000); \ 349 do_div(cmax, 1000); \ 350 \ 351 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 352 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 353 } \ 354 static ssize_t \ 355 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 356 struct device_attribute *attr, \ 357 const char *buf, size_t count) \ 358 { \ 359 struct scsi_device *sdev = to_scsi_device(dev); \ 360 struct zfcp_unit *unit = sdev->hostdata; \ 361 struct zfcp_latencies *lat = &unit->latencies; \ 362 unsigned long flags; \ 363 \ 364 spin_lock_irqsave(&lat->lock, flags); \ 365 lat->_name.fabric.sum = 0; \ 366 lat->_name.fabric.min = 0xFFFFFFFF; \ 367 lat->_name.fabric.max = 0; \ 368 lat->_name.channel.sum = 0; \ 369 lat->_name.channel.min = 0xFFFFFFFF; \ 370 lat->_name.channel.max = 0; \ 371 lat->_name.counter = 0; \ 372 spin_unlock_irqrestore(&lat->lock, flags); \ 373 \ 374 return (ssize_t) count; \ 375 } \ 376 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 377 zfcp_sysfs_unit_##_name##_latency_show, \ 378 zfcp_sysfs_unit_##_name##_latency_store); 379 380 ZFCP_DEFINE_LATENCY_ATTR(read); 381 ZFCP_DEFINE_LATENCY_ATTR(write); 382 ZFCP_DEFINE_LATENCY_ATTR(cmd); 383 384 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 385 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 386 struct device_attribute *attr,\ 387 char *buf) \ 388 { \ 389 struct scsi_device *sdev = to_scsi_device(dev); \ 390 struct zfcp_unit *unit = sdev->hostdata; \ 391 \ 392 return sprintf(buf, _format, _value); \ 393 } \ 394 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 395 396 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 397 unit->port->adapter->ccw_device->dev.bus_id); 398 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn); 399 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun); 400 401 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 402 &dev_attr_fcp_lun, 403 &dev_attr_wwpn, 404 &dev_attr_hba_id, 405 &dev_attr_read_latency, 406 &dev_attr_write_latency, 407 &dev_attr_cmd_latency, 408 NULL 409 }; 410 411 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 412 struct device_attribute *attr, 413 char *buf) 414 { 415 struct Scsi_Host *scsi_host = dev_to_shost(dev); 416 struct fsf_qtcb_bottom_port *qtcb_port; 417 struct zfcp_adapter *adapter; 418 int retval; 419 420 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 421 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 422 return -EOPNOTSUPP; 423 424 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 425 if (!qtcb_port) 426 return -ENOMEM; 427 428 retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port); 429 if (!retval) 430 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 431 qtcb_port->cb_util, qtcb_port->a_util); 432 kfree(qtcb_port); 433 return retval; 434 } 435 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 436 437 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 438 struct fsf_statistics_info *stat_inf) 439 { 440 struct Scsi_Host *scsi_host = dev_to_shost(dev); 441 struct fsf_qtcb_bottom_config *qtcb_config; 442 struct zfcp_adapter *adapter; 443 int retval; 444 445 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 446 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 447 return -EOPNOTSUPP; 448 449 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 450 GFP_KERNEL); 451 if (!qtcb_config) 452 return -ENOMEM; 453 454 retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config); 455 if (!retval) 456 *stat_inf = qtcb_config->stat_info; 457 458 kfree(qtcb_config); 459 return retval; 460 } 461 462 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 463 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 464 struct device_attribute *attr,\ 465 char *buf) \ 466 { \ 467 struct fsf_statistics_info stat_info; \ 468 int retval; \ 469 \ 470 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 471 if (retval) \ 472 return retval; \ 473 \ 474 return sprintf(buf, _format, ## _arg); \ 475 } \ 476 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 477 478 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 479 (unsigned long long) stat_info.input_req, 480 (unsigned long long) stat_info.output_req, 481 (unsigned long long) stat_info.control_req); 482 483 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 484 (unsigned long long) stat_info.input_mb, 485 (unsigned long long) stat_info.output_mb); 486 487 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 488 (unsigned long long) stat_info.seconds_act); 489 490 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 491 &dev_attr_utilization, 492 &dev_attr_requests, 493 &dev_attr_megabytes, 494 &dev_attr_seconds_active, 495 NULL 496 }; 497