drivers/s390/scsi/zfcp_sysfs.c

   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 };