1 /* 2 * zfcp device driver 3 * 4 * sysfs attributes. 5 * 6 * Copyright IBM Corporation 2008 7 */ 8 9 #define KMSG_COMPONENT "zfcp" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include "zfcp_ext.h" 13 14 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ 15 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ 16 _show, _store) 17 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ 18 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ 19 struct device_attribute *at,\ 20 char *buf) \ 21 { \ 22 struct _feat_def *_feat = dev_get_drvdata(dev); \ 23 \ 24 return sprintf(buf, _format, _value); \ 25 } \ 26 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ 27 zfcp_sysfs_##_feat##_##_name##_show, NULL); 28 29 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n", 30 atomic_read(&adapter->status)); 31 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n", 32 (unsigned long long) adapter->peer_wwnn); 33 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n", 34 (unsigned long long) adapter->peer_wwpn); 35 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n", 36 adapter->peer_d_id); 37 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n", 38 adapter->hydra_version); 39 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n", 40 adapter->fsf_lic_version); 41 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n", 42 adapter->hardware_version); 43 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n", 44 (atomic_read(&adapter->status) & 45 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 46 47 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", 48 atomic_read(&port->status)); 49 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", 50 (atomic_read(&port->status) & 51 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 52 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n", 53 (atomic_read(&port->status) & 54 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 55 56 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", 57 atomic_read(&unit->status)); 58 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", 59 (atomic_read(&unit->status) & 60 ZFCP_STATUS_COMMON_ERP_INUSE) != 0); 61 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", 62 (atomic_read(&unit->status) & 63 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); 64 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n", 65 (atomic_read(&unit->status) & 66 ZFCP_STATUS_UNIT_SHARED) != 0); 67 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n", 68 (atomic_read(&unit->status) & 69 ZFCP_STATUS_UNIT_READONLY) != 0); 70 71 #define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \ 72 static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \ 73 struct device_attribute *attr, \ 74 char *buf) \ 75 { \ 76 struct _feat_def *_feat = dev_get_drvdata(dev); \ 77 \ 78 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \ 79 return sprintf(buf, "1\n"); \ 80 else \ 81 return sprintf(buf, "0\n"); \ 82 } \ 83 static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \ 84 struct device_attribute *attr,\ 85 const char *buf, size_t count)\ 86 { \ 87 struct _feat_def *_feat = dev_get_drvdata(dev); \ 88 unsigned long val; \ 89 int retval = 0; \ 90 \ 91 down(&zfcp_data.config_sema); \ 92 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \ 93 retval = -EBUSY; \ 94 goto out; \ 95 } \ 96 \ 97 if (strict_strtoul(buf, 0, &val) || val != 0) { \ 98 retval = -EINVAL; \ 99 goto out; \ 100 } \ 101 \ 102 zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \ 103 ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\ 104 zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \ 105 _reopen_id, NULL); \ 106 zfcp_erp_wait(_adapter); \ 107 out: \ 108 up(&zfcp_data.config_sema); \ 109 return retval ? retval : (ssize_t) count; \ 110 } \ 111 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \ 112 zfcp_sysfs_##_feat##_failed_show, \ 113 zfcp_sysfs_##_feat##_failed_store); 114 115 ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, "syafai1", "syafai2"); 116 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2"); 117 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2"); 118 119 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, 120 struct device_attribute *attr, 121 const char *buf, size_t count) 122 { 123 struct zfcp_adapter *adapter = dev_get_drvdata(dev); 124 int ret; 125 126 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) 127 return -EBUSY; 128 129 ret = zfcp_scan_ports(adapter); 130 return ret ? ret : (ssize_t) count; 131 } 132 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, 133 zfcp_sysfs_port_rescan_store); 134 135 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, 136 struct device_attribute *attr, 137 const char *buf, size_t count) 138 { 139 struct zfcp_adapter *adapter = dev_get_drvdata(dev); 140 struct zfcp_port *port; 141 u64 wwpn; 142 int retval = 0; 143 LIST_HEAD(port_remove_lh); 144 145 down(&zfcp_data.config_sema); 146 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { 147 retval = -EBUSY; 148 goto out; 149 } 150 151 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) { 152 retval = -EINVAL; 153 goto out; 154 } 155 156 write_lock_irq(&zfcp_data.config_lock); 157 port = zfcp_get_port_by_wwpn(adapter, wwpn); 158 if (port && (atomic_read(&port->refcount) == 0)) { 159 zfcp_port_get(port); 160 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); 161 list_move(&port->list, &port_remove_lh); 162 } else 163 port = NULL; 164 write_unlock_irq(&zfcp_data.config_lock); 165 166 if (!port) { 167 retval = -ENXIO; 168 goto out; 169 } 170 171 zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL); 172 zfcp_erp_wait(adapter); 173 zfcp_port_put(port); 174 zfcp_port_dequeue(port); 175 out: 176 up(&zfcp_data.config_sema); 177 return retval ? retval : (ssize_t) count; 178 } 179 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, 180 zfcp_sysfs_port_remove_store); 181 182 static struct attribute *zfcp_adapter_attrs[] = { 183 &dev_attr_adapter_failed.attr, 184 &dev_attr_adapter_in_recovery.attr, 185 &dev_attr_adapter_port_remove.attr, 186 &dev_attr_adapter_port_rescan.attr, 187 &dev_attr_adapter_peer_wwnn.attr, 188 &dev_attr_adapter_peer_wwpn.attr, 189 &dev_attr_adapter_peer_d_id.attr, 190 &dev_attr_adapter_card_version.attr, 191 &dev_attr_adapter_lic_version.attr, 192 &dev_attr_adapter_status.attr, 193 &dev_attr_adapter_hardware_version.attr, 194 NULL 195 }; 196 197 struct attribute_group zfcp_sysfs_adapter_attrs = { 198 .attrs = zfcp_adapter_attrs, 199 }; 200 201 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, 202 struct device_attribute *attr, 203 const char *buf, size_t count) 204 { 205 struct zfcp_port *port = dev_get_drvdata(dev); 206 struct zfcp_unit *unit; 207 u64 fcp_lun; 208 int retval = -EINVAL; 209 210 down(&zfcp_data.config_sema); 211 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 212 retval = -EBUSY; 213 goto out; 214 } 215 216 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) 217 goto out; 218 219 unit = zfcp_unit_enqueue(port, fcp_lun); 220 if (IS_ERR(unit)) 221 goto out; 222 223 retval = 0; 224 225 zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL); 226 zfcp_erp_wait(unit->port->adapter); 227 zfcp_unit_put(unit); 228 out: 229 up(&zfcp_data.config_sema); 230 return retval ? retval : (ssize_t) count; 231 } 232 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); 233 234 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, 235 struct device_attribute *attr, 236 const char *buf, size_t count) 237 { 238 struct zfcp_port *port = dev_get_drvdata(dev); 239 struct zfcp_unit *unit; 240 u64 fcp_lun; 241 int retval = 0; 242 LIST_HEAD(unit_remove_lh); 243 244 down(&zfcp_data.config_sema); 245 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { 246 retval = -EBUSY; 247 goto out; 248 } 249 250 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) { 251 retval = -EINVAL; 252 goto out; 253 } 254 255 write_lock_irq(&zfcp_data.config_lock); 256 unit = zfcp_get_unit_by_lun(port, fcp_lun); 257 if (unit) { 258 write_unlock_irq(&zfcp_data.config_lock); 259 /* wait for possible timeout during SCSI probe */ 260 flush_work(&unit->scsi_work); 261 write_lock_irq(&zfcp_data.config_lock); 262 263 if (atomic_read(&unit->refcount) == 0) { 264 zfcp_unit_get(unit); 265 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, 266 &unit->status); 267 list_move(&unit->list, &unit_remove_lh); 268 } else { 269 unit = NULL; 270 } 271 } 272 273 write_unlock_irq(&zfcp_data.config_lock); 274 275 if (!unit) { 276 retval = -ENXIO; 277 goto out; 278 } 279 280 zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL); 281 zfcp_erp_wait(unit->port->adapter); 282 zfcp_unit_put(unit); 283 zfcp_unit_dequeue(unit); 284 out: 285 up(&zfcp_data.config_sema); 286 return retval ? retval : (ssize_t) count; 287 } 288 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); 289 290 static struct attribute *zfcp_port_attrs[] = { 291 &dev_attr_unit_add.attr, 292 &dev_attr_unit_remove.attr, 293 &dev_attr_port_failed.attr, 294 &dev_attr_port_in_recovery.attr, 295 &dev_attr_port_status.attr, 296 &dev_attr_port_access_denied.attr, 297 NULL 298 }; 299 300 /** 301 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports 302 */ 303 struct attribute_group zfcp_sysfs_port_attrs = { 304 .attrs = zfcp_port_attrs, 305 }; 306 307 static struct attribute *zfcp_unit_attrs[] = { 308 &dev_attr_unit_failed.attr, 309 &dev_attr_unit_in_recovery.attr, 310 &dev_attr_unit_status.attr, 311 &dev_attr_unit_access_denied.attr, 312 &dev_attr_unit_access_shared.attr, 313 &dev_attr_unit_access_readonly.attr, 314 NULL 315 }; 316 317 struct attribute_group zfcp_sysfs_unit_attrs = { 318 .attrs = zfcp_unit_attrs, 319 }; 320 321 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ 322 static ssize_t \ 323 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ 324 struct device_attribute *attr, \ 325 char *buf) { \ 326 struct scsi_device *sdev = to_scsi_device(dev); \ 327 struct zfcp_unit *unit = sdev->hostdata; \ 328 struct zfcp_latencies *lat = &unit->latencies; \ 329 struct zfcp_adapter *adapter = unit->port->adapter; \ 330 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ 331 \ 332 spin_lock_bh(&lat->lock); \ 333 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ 334 fmin = lat->_name.fabric.min * adapter->timer_ticks; \ 335 fmax = lat->_name.fabric.max * adapter->timer_ticks; \ 336 csum = lat->_name.channel.sum * adapter->timer_ticks; \ 337 cmin = lat->_name.channel.min * adapter->timer_ticks; \ 338 cmax = lat->_name.channel.max * adapter->timer_ticks; \ 339 cc = lat->_name.counter; \ 340 spin_unlock_bh(&lat->lock); \ 341 \ 342 do_div(fsum, 1000); \ 343 do_div(fmin, 1000); \ 344 do_div(fmax, 1000); \ 345 do_div(csum, 1000); \ 346 do_div(cmin, 1000); \ 347 do_div(cmax, 1000); \ 348 \ 349 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ 350 fmin, fmax, fsum, cmin, cmax, csum, cc); \ 351 } \ 352 static ssize_t \ 353 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ 354 struct device_attribute *attr, \ 355 const char *buf, size_t count) \ 356 { \ 357 struct scsi_device *sdev = to_scsi_device(dev); \ 358 struct zfcp_unit *unit = sdev->hostdata; \ 359 struct zfcp_latencies *lat = &unit->latencies; \ 360 unsigned long flags; \ 361 \ 362 spin_lock_irqsave(&lat->lock, flags); \ 363 lat->_name.fabric.sum = 0; \ 364 lat->_name.fabric.min = 0xFFFFFFFF; \ 365 lat->_name.fabric.max = 0; \ 366 lat->_name.channel.sum = 0; \ 367 lat->_name.channel.min = 0xFFFFFFFF; \ 368 lat->_name.channel.max = 0; \ 369 lat->_name.counter = 0; \ 370 spin_unlock_irqrestore(&lat->lock, flags); \ 371 \ 372 return (ssize_t) count; \ 373 } \ 374 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ 375 zfcp_sysfs_unit_##_name##_latency_show, \ 376 zfcp_sysfs_unit_##_name##_latency_store); 377 378 ZFCP_DEFINE_LATENCY_ATTR(read); 379 ZFCP_DEFINE_LATENCY_ATTR(write); 380 ZFCP_DEFINE_LATENCY_ATTR(cmd); 381 382 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ 383 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ 384 struct device_attribute *attr,\ 385 char *buf) \ 386 { \ 387 struct scsi_device *sdev = to_scsi_device(dev); \ 388 struct zfcp_unit *unit = sdev->hostdata; \ 389 \ 390 return sprintf(buf, _format, _value); \ 391 } \ 392 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); 393 394 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", 395 dev_name(&unit->port->adapter->ccw_device->dev)); 396 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", 397 (unsigned long long) unit->port->wwpn); 398 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", 399 (unsigned long long) 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 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, 491 struct device_attribute *attr, 492 char *buf) 493 { 494 struct Scsi_Host *scsi_host = class_to_shost(dev); 495 struct zfcp_adapter *adapter = 496 (struct zfcp_adapter *) scsi_host->hostdata[0]; 497 498 return sprintf(buf, "%d %llu\n", atomic_read(&adapter->qdio_outb_full), 499 (unsigned long long)adapter->req_q_util); 500 } 501 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); 502 503 struct device_attribute *zfcp_sysfs_shost_attrs[] = { 504 &dev_attr_utilization, 505 &dev_attr_requests, 506 &dev_attr_megabytes, 507 &dev_attr_seconds_active, 508 &dev_attr_queue_full, 509 NULL 510 }; 511