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 (unsigned long long) adapter->peer_wwnn); 30 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n", 31 (unsigned long long) 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 u64 wwpn; 139 int retval = 0; 140 LIST_HEAD(port_remove_lh); 141 142 down(&zfcp_data.config_sema); 143 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { 144 retval = -EBUSY; 145 goto out; 146 } 147 148 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) { 149 retval = -EINVAL; 150 goto out; 151 } 152 153 write_lock_irq(&zfcp_data.config_lock); 154 port = zfcp_get_port_by_wwpn(adapter, wwpn); 155 if (port && (atomic_read(&port->refcount) == 0)) { 156 zfcp_port_get(port); 157 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); 158 list_move(&port->list, &port_remove_lh); 159 } else 160 port = NULL; 161 write_unlock_irq(&zfcp_data.config_lock); 162 163 if (!port) { 164 retval = -ENXIO; 165 goto out; 166 } 167 168 zfcp_erp_port_shutdown(port, 0, 92, NULL); 169 zfcp_erp_wait(adapter); 170 zfcp_port_put(port); 171 zfcp_port_dequeue(port); 172 out: 173 up(&zfcp_data.config_sema); 174 return retval ? retval : (ssize_t) count; 175 } 176 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 177 zfcp_sysfs_port_remove_store); 178 179 static struct attribute *zfcp_adapter_attrs[] = { 180 &dev_attr_adapter_failed.attr, 181 &dev_attr_adapter_in_recovery.attr, 182 &dev_attr_adapter_port_remove.attr, 183 &dev_attr_adapter_port_rescan.attr, 184 &dev_attr_adapter_peer_wwnn.attr, 185 &dev_attr_adapter_peer_wwpn.attr, 186 &dev_attr_adapter_peer_d_id.attr, 187 &dev_attr_adapter_card_version.attr, 188 &dev_attr_adapter_lic_version.attr, 189 &dev_attr_adapter_status.attr, 190 &dev_attr_adapter_hardware_version.attr, 191 NULL 192 }; 193 194 struct attribute_group zfcp_sysfs_adapter_attrs = { 195 .attrs = zfcp_adapter_attrs, 196 }; 197 198 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 199 struct device_attribute *attr, 200 const char *buf, size_t count) 201 { 202 struct zfcp_port *port = dev_get_drvdata(dev); 203 struct zfcp_unit *unit; 204 u64 fcp_lun; 205 int retval = -EINVAL; 206 207 down(&zfcp_data.config_sema); 208 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 209 retval = -EBUSY; 210 goto out; 211 } 212 213 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 214 goto out; 215 216 unit = zfcp_unit_enqueue(port, fcp_lun); 217 if (IS_ERR(unit)) 218 goto out; 219 220 retval = 0; 221 222 zfcp_erp_unit_reopen(unit, 0, 94, NULL); 223 zfcp_erp_wait(unit->port->adapter); 224 zfcp_unit_put(unit); 225 out: 226 up(&zfcp_data.config_sema); 227 return retval ? retval : (ssize_t) count; 228 } 229 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 230 231 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 232 struct device_attribute *attr, 233 const char *buf, size_t count) 234 { 235 struct zfcp_port *port = dev_get_drvdata(dev); 236 struct zfcp_unit *unit; 237 u64 fcp_lun; 238 int retval = 0; 239 LIST_HEAD(unit_remove_lh); 240 241 down(&zfcp_data.config_sema); 242 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 243 retval = -EBUSY; 244 goto out; 245 } 246 247 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) { 248 retval = -EINVAL; 249 goto out; 250 } 251 252 write_lock_irq(&zfcp_data.config_lock); 253 unit = zfcp_get_unit_by_lun(port, fcp_lun); 254 if (unit && (atomic_read(&unit->refcount) == 0)) { 255 zfcp_unit_get(unit); 256 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); 257 list_move(&unit->list, &unit_remove_lh); 258 } else 259 unit = NULL; 260 261 write_unlock_irq(&zfcp_data.config_lock); 262 263 if (!unit) { 264 retval = -ENXIO; 265 goto out; 266 } 267 268 zfcp_erp_unit_shutdown(unit, 0, 95, NULL); 269 zfcp_erp_wait(unit->port->adapter); 270 zfcp_unit_put(unit); 271 zfcp_unit_dequeue(unit); 272 out: 273 up(&zfcp_data.config_sema); 274 return retval ? retval : (ssize_t) count; 275 } 276 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 277 278 static struct attribute *zfcp_port_attrs[] = { 279 &dev_attr_unit_add.attr, 280 &dev_attr_unit_remove.attr, 281 &dev_attr_port_failed.attr, 282 &dev_attr_port_in_recovery.attr, 283 &dev_attr_port_status.attr, 284 &dev_attr_port_access_denied.attr, 285 NULL 286 }; 287 288 /** 289 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports 290 */ 291 struct attribute_group zfcp_sysfs_port_attrs = { 292 .attrs = zfcp_port_attrs, 293 }; 294 295 static struct attribute *zfcp_unit_attrs[] = { 296 &dev_attr_unit_failed.attr, 297 &dev_attr_unit_in_recovery.attr, 298 &dev_attr_unit_status.attr, 299 &dev_attr_unit_access_denied.attr, 300 &dev_attr_unit_access_shared.attr, 301 &dev_attr_unit_access_readonly.attr, 302 NULL 303 }; 304 305 struct attribute_group zfcp_sysfs_unit_attrs = { 306 .attrs = zfcp_unit_attrs, 307 }; 308 309 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 310 static ssize_t \ 311 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 312 struct device_attribute *attr, \ 313 char *buf) { \ 314 struct scsi_device *sdev = to_scsi_device(dev); \ 315 struct zfcp_unit *unit = sdev->hostdata; \ 316 struct zfcp_latencies *lat = &unit->latencies; \ 317 struct zfcp_adapter *adapter = unit->port->adapter; \ 318 unsigned long flags; \ 319 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 320 \ 321 spin_lock_irqsave(&lat->lock, flags); \ 322 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 323 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 324 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 325 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 326 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 327 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 328 cc = lat->_name.counter; \ 329 spin_unlock_irqrestore(&lat->lock, flags); \ 330 \ 331 do_div(fsum, 1000); \ 332 do_div(fmin, 1000); \ 333 do_div(fmax, 1000); \ 334 do_div(csum, 1000); \ 335 do_div(cmin, 1000); \ 336 do_div(cmax, 1000); \ 337 \ 338 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 339 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 340 } \ 341 static ssize_t \ 342 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 343 struct device_attribute *attr, \ 344 const char *buf, size_t count) \ 345 { \ 346 struct scsi_device *sdev = to_scsi_device(dev); \ 347 struct zfcp_unit *unit = sdev->hostdata; \ 348 struct zfcp_latencies *lat = &unit->latencies; \ 349 unsigned long flags; \ 350 \ 351 spin_lock_irqsave(&lat->lock, flags); \ 352 lat->_name.fabric.sum = 0; \ 353 lat->_name.fabric.min = 0xFFFFFFFF; \ 354 lat->_name.fabric.max = 0; \ 355 lat->_name.channel.sum = 0; \ 356 lat->_name.channel.min = 0xFFFFFFFF; \ 357 lat->_name.channel.max = 0; \ 358 lat->_name.counter = 0; \ 359 spin_unlock_irqrestore(&lat->lock, flags); \ 360 \ 361 return (ssize_t) count; \ 362 } \ 363 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 364 zfcp_sysfs_unit_##_name##_latency_show, \ 365 zfcp_sysfs_unit_##_name##_latency_store); 366 367 ZFCP_DEFINE_LATENCY_ATTR(read); 368 ZFCP_DEFINE_LATENCY_ATTR(write); 369 ZFCP_DEFINE_LATENCY_ATTR(cmd); 370 371 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 372 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 373 struct device_attribute *attr,\ 374 char *buf) \ 375 { \ 376 struct scsi_device *sdev = to_scsi_device(dev); \ 377 struct zfcp_unit *unit = sdev->hostdata; \ 378 \ 379 return sprintf(buf, _format, _value); \ 380 } \ 381 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 382 383 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 384 dev_name(&unit->port->adapter->ccw_device->dev)); 385 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 386 (unsigned long long) unit->port->wwpn); 387 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", 388 (unsigned long long) unit->fcp_lun); 389 390 struct device_attribute *zfcp_sysfs_sdev_attrs[] = { 391 &dev_attr_fcp_lun, 392 &dev_attr_wwpn, 393 &dev_attr_hba_id, 394 &dev_attr_read_latency, 395 &dev_attr_write_latency, 396 &dev_attr_cmd_latency, 397 NULL 398 }; 399 400 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, 401 struct device_attribute *attr, 402 char *buf) 403 { 404 struct Scsi_Host *scsi_host = dev_to_shost(dev); 405 struct fsf_qtcb_bottom_port *qtcb_port; 406 struct zfcp_adapter *adapter; 407 int retval; 408 409 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 410 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 411 return -EOPNOTSUPP; 412 413 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); 414 if (!qtcb_port) 415 return -ENOMEM; 416 417 retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port); 418 if (!retval) 419 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, 420 qtcb_port->cb_util, qtcb_port->a_util); 421 kfree(qtcb_port); 422 return retval; 423 } 424 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); 425 426 static int zfcp_sysfs_adapter_ex_config(struct device *dev, 427 struct fsf_statistics_info *stat_inf) 428 { 429 struct Scsi_Host *scsi_host = dev_to_shost(dev); 430 struct fsf_qtcb_bottom_config *qtcb_config; 431 struct zfcp_adapter *adapter; 432 int retval; 433 434 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; 435 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) 436 return -EOPNOTSUPP; 437 438 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), 439 GFP_KERNEL); 440 if (!qtcb_config) 441 return -ENOMEM; 442 443 retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config); 444 if (!retval) 445 *stat_inf = qtcb_config->stat_info; 446 447 kfree(qtcb_config); 448 return retval; 449 } 450 451 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ 452 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ 453 struct device_attribute *attr,\ 454 char *buf) \ 455 { \ 456 struct fsf_statistics_info stat_info; \ 457 int retval; \ 458 \ 459 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ 460 if (retval) \ 461 return retval; \ 462 \ 463 return sprintf(buf, _format, ## _arg); \ 464 } \ 465 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); 466 467 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", 468 (unsigned long long) stat_info.input_req, 469 (unsigned long long) stat_info.output_req, 470 (unsigned long long) stat_info.control_req); 471 472 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", 473 (unsigned long long) stat_info.input_mb, 474 (unsigned long long) stat_info.output_mb); 475 476 ZFCP_SHOST_ATTR(seconds_active, "%llu\n", 477 (unsigned long long) stat_info.seconds_act); 478 479 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 480 struct device_attribute *attr, 481 char *buf) 482 { 483 struct Scsi_Host *scsi_host = class_to_shost(dev); 484 struct zfcp_adapter *adapter = 485 (struct zfcp_adapter *) scsi_host->hostdata[0]; 486 487 return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full)); 488 } 489 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 490 491 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 492 &dev_attr_utilization, 493 &dev_attr_requests, 494 &dev_attr_megabytes, 495 &dev_attr_seconds_active, 496 &dev_attr_queue_full, 497 NULL 498 }; 499