drivers/s390/scsi/zfcp_sysfs.c

   1 /*
   2  * zfcp device driver
   3  *
   4  * sysfs attributes.
   5  *
   6  * Copyright IBM Corporation 2008, 2009
   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 = container_of(dev, struct _feat_def,          \
  23                                                sysfs_device);                  \
  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                  atomic_read(&unit->status));
  72 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
  73                  (atomic_read(&unit->status) &
  74                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  75 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
  76                  (atomic_read(&unit->status) &
  77                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  78 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
  79                  (atomic_read(&unit->status) &
  80                   ZFCP_STATUS_UNIT_SHARED) != 0);
  81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
  82                  (atomic_read(&unit->status) &
  83                   ZFCP_STATUS_UNIT_READONLY) != 0);
  84
  85 #define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id)     \
  86 static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev,            \
  87                                                 struct device_attribute *attr, \
  88                                                 char *buf)                     \
  89 {                                                                              \
  90         struct _feat_def *_feat = container_of(dev, struct _feat_def,          \
  91                                                sysfs_device);                  \
  92                                                                                \
  93         if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED)       \
  94                 return sprintf(buf, "1\n");                                    \
  95         else                                                                   \
  96                 return sprintf(buf, "0\n");                                    \
  97 }                                                                              \
  98 static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev,           \
  99                                                  struct device_attribute *attr,\
 100                                                  const char *buf, size_t count)\
 101 {                                                                              \
 102         struct _feat_def *_feat = container_of(dev, struct _feat_def,          \
 103                                                sysfs_device);                  \
 104         unsigned long val;                                                     \
 105         int retval = 0;                                                        \
 106                                                                                \
 107         if (!(_feat && get_device(&_feat->sysfs_device)))                      \
 108                 return -EBUSY;                                                 \
 109                                                                                \
 110         if (strict_strtoul(buf, 0, &val) || val != 0) {                        \
 111                 retval = -EINVAL;                                              \
 112                 goto out;                                                      \
 113         }                                                                      \
 114                                                                                \
 115         zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL,                 \
 116                                          ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
 117         zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED,        \
 118                                   _reopen_id, NULL);                           \
 119         zfcp_erp_wait(_adapter);                                               \
 120 out:                                                                           \
 121         put_device(&_feat->sysfs_device);                                      \
 122         return retval ? retval : (ssize_t) count;                              \
 123 }                                                                              \
 124 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO,                         \
 125                      zfcp_sysfs_##_feat##_failed_show,                         \
 126                      zfcp_sysfs_##_feat##_failed_store);
 127
 128 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2");
 129 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2");
 130
 131 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
 132                                               struct device_attribute *attr,
 133                                               char *buf)
 134 {
 135         struct ccw_device *cdev = to_ccwdev(dev);
 136         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 137         int i;
 138
 139         if (!adapter)
 140                 return -ENODEV;
 141
 142         if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 143                 i = sprintf(buf, "1\n");
 144         else
 145                 i = sprintf(buf, "0\n");
 146
 147         zfcp_ccw_adapter_put(adapter);
 148         return i;
 149 }
 150
 151 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
 152                                                struct device_attribute *attr,
 153                                                const char *buf, size_t count)
 154 {
 155         struct ccw_device *cdev = to_ccwdev(dev);
 156         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 157         unsigned long val;
 158         int retval = 0;
 159
 160         if (!adapter)
 161                 return -ENODEV;
 162
 163         if (strict_strtoul(buf, 0, &val) || val != 0) {
 164                 retval = -EINVAL;
 165                 goto out;
 166         }
 167
 168         zfcp_erp_modify_adapter_status(adapter, "syafai1", NULL,
 169                                        ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
 170         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
 171                                 "syafai2", NULL);
 172         zfcp_erp_wait(adapter);
 173 out:
 174         zfcp_ccw_adapter_put(adapter);
 175         return retval ? retval : (ssize_t) count;
 176 }
 177 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 178                      zfcp_sysfs_adapter_failed_show,
 179                      zfcp_sysfs_adapter_failed_store);
 180
 181 static ssize_t zfcp_sysfs_port_rescan_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
 188         if (!adapter)
 189                 return -ENODEV;
 190
 191         /* sync the user-space- with the kernel-invocation of scan_work */
 192         queue_work(adapter->work_queue, &adapter->scan_work);
 193         flush_work(&adapter->scan_work);
 194         zfcp_ccw_adapter_put(adapter);
 195
 196         return (ssize_t) count;
 197 }
 198 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
 199                      zfcp_sysfs_port_rescan_store);
 200
 201 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
 202                                             struct device_attribute *attr,
 203                                             const char *buf, size_t count)
 204 {
 205         struct ccw_device *cdev = to_ccwdev(dev);
 206         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 207         struct zfcp_port *port;
 208         u64 wwpn;
 209         int retval = -EINVAL;
 210
 211         if (!adapter)
 212                 return -ENODEV;
 213
 214         if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn))
 215                 goto out;
 216
 217         port = zfcp_get_port_by_wwpn(adapter, wwpn);
 218         if (!port)
 219                 goto out;
 220         else
 221                 retval = 0;
 222
 223         write_lock_irq(&adapter->port_list_lock);
 224         list_del(&port->list);
 225         write_unlock_irq(&adapter->port_list_lock);
 226
 227         put_device(&port->sysfs_device);
 228
 229         zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL);
 230         zfcp_device_unregister(&port->sysfs_device, &zfcp_sysfs_port_attrs);
 231  out:
 232         zfcp_ccw_adapter_put(adapter);
 233         return retval ? retval : (ssize_t) count;
 234 }
 235 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
 236                      zfcp_sysfs_port_remove_store);
 237
 238 static struct attribute *zfcp_adapter_attrs[] = {
 239         &dev_attr_adapter_failed.attr,
 240         &dev_attr_adapter_in_recovery.attr,
 241         &dev_attr_adapter_port_remove.attr,
 242         &dev_attr_adapter_port_rescan.attr,
 243         &dev_attr_adapter_peer_wwnn.attr,
 244         &dev_attr_adapter_peer_wwpn.attr,
 245         &dev_attr_adapter_peer_d_id.attr,
 246         &dev_attr_adapter_card_version.attr,
 247         &dev_attr_adapter_lic_version.attr,
 248         &dev_attr_adapter_status.attr,
 249         &dev_attr_adapter_hardware_version.attr,
 250         NULL
 251 };
 252
 253 struct attribute_group zfcp_sysfs_adapter_attrs = {
 254         .attrs = zfcp_adapter_attrs,
 255 };
 256
 257 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
 258                                          struct device_attribute *attr,
 259                                          const char *buf, size_t count)
 260 {
 261         struct zfcp_port *port = container_of(dev, struct zfcp_port,
 262                                               sysfs_device);
 263         struct zfcp_unit *unit;
 264         u64 fcp_lun;
 265         int retval = -EINVAL;
 266
 267         if (!(port && get_device(&port->sysfs_device)))
 268                 return -EBUSY;
 269
 270         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 271                 goto out;
 272
 273         unit = zfcp_unit_enqueue(port, fcp_lun);
 274         if (IS_ERR(unit))
 275                 goto out;
 276         else
 277                 retval = 0;
 278
 279         zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
 280         zfcp_erp_wait(unit->port->adapter);
 281         flush_work(&unit->scsi_work);
 282 out:
 283         put_device(&port->sysfs_device);
 284         return retval ? retval : (ssize_t) count;
 285 }
 286 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
 287
 288 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 289                                             struct device_attribute *attr,
 290                                             const char *buf, size_t count)
 291 {
 292         struct zfcp_port *port = container_of(dev, struct zfcp_port,
 293                                               sysfs_device);
 294         struct zfcp_unit *unit;
 295         u64 fcp_lun;
 296         int retval = -EINVAL;
 297
 298         if (!(port && get_device(&port->sysfs_device)))
 299                 return -EBUSY;
 300
 301         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 302                 goto out;
 303
 304         unit = zfcp_get_unit_by_lun(port, fcp_lun);
 305         if (!unit)
 306                 goto out;
 307         else
 308                 retval = 0;
 309
 310         /* wait for possible timeout during SCSI probe */
 311         flush_work(&unit->scsi_work);
 312
 313         write_lock_irq(&port->unit_list_lock);
 314         list_del(&unit->list);
 315         write_unlock_irq(&port->unit_list_lock);
 316
 317         put_device(&unit->sysfs_device);
 318
 319         zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
 320         zfcp_device_unregister(&unit->sysfs_device, &zfcp_sysfs_unit_attrs);
 321 out:
 322         put_device(&port->sysfs_device);
 323         return retval ? retval : (ssize_t) count;
 324 }
 325 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
 326
 327 static struct attribute *zfcp_port_attrs[] = {
 328         &dev_attr_unit_add.attr,
 329         &dev_attr_unit_remove.attr,
 330         &dev_attr_port_failed.attr,
 331         &dev_attr_port_in_recovery.attr,
 332         &dev_attr_port_status.attr,
 333         &dev_attr_port_access_denied.attr,
 334         NULL
 335 };
 336
 337 /**
 338  * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
 339  */
 340 struct attribute_group zfcp_sysfs_port_attrs = {
 341         .attrs = zfcp_port_attrs,
 342 };
 343
 344 static struct attribute *zfcp_unit_attrs[] = {
 345         &dev_attr_unit_failed.attr,
 346         &dev_attr_unit_in_recovery.attr,
 347         &dev_attr_unit_status.attr,
 348         &dev_attr_unit_access_denied.attr,
 349         &dev_attr_unit_access_shared.attr,
 350         &dev_attr_unit_access_readonly.attr,
 351         NULL
 352 };
 353
 354 struct attribute_group zfcp_sysfs_unit_attrs = {
 355         .attrs = zfcp_unit_attrs,
 356 };
 357
 358 #define ZFCP_DEFINE_LATENCY_ATTR(_name)                                 \
 359 static ssize_t                                                          \
 360 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,              \
 361                                        struct device_attribute *attr,   \
 362                                        char *buf) {                     \
 363         struct scsi_device *sdev = to_scsi_device(dev);                 \
 364         struct zfcp_unit *unit = sdev->hostdata;                        \
 365         struct zfcp_latencies *lat = &unit->latencies;                  \
 366         struct zfcp_adapter *adapter = unit->port->adapter;             \
 367         unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;      \
 368                                                                         \
 369         spin_lock_bh(&lat->lock);                                       \
 370         fsum = lat->_name.fabric.sum * adapter->timer_ticks;            \
 371         fmin = lat->_name.fabric.min * adapter->timer_ticks;            \
 372         fmax = lat->_name.fabric.max * adapter->timer_ticks;            \
 373         csum = lat->_name.channel.sum * adapter->timer_ticks;           \
 374         cmin = lat->_name.channel.min * adapter->timer_ticks;           \
 375         cmax = lat->_name.channel.max * adapter->timer_ticks;           \
 376         cc  = lat->_name.counter;                                       \
 377         spin_unlock_bh(&lat->lock);                                     \
 378                                                                         \
 379         do_div(fsum, 1000);                                             \
 380         do_div(fmin, 1000);                                             \
 381         do_div(fmax, 1000);                                             \
 382         do_div(csum, 1000);                                             \
 383         do_div(cmin, 1000);                                             \
 384         do_div(cmax, 1000);                                             \
 385                                                                         \
 386         return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",     \
 387                        fmin, fmax, fsum, cmin, cmax, csum, cc);         \
 388 }                                                                       \
 389 static ssize_t                                                          \
 390 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,             \
 391                                         struct device_attribute *attr,  \
 392                                         const char *buf, size_t count)  \
 393 {                                                                       \
 394         struct scsi_device *sdev = to_scsi_device(dev);                 \
 395         struct zfcp_unit *unit = sdev->hostdata;                        \
 396         struct zfcp_latencies *lat = &unit->latencies;                  \
 397         unsigned long flags;                                            \
 398                                                                         \
 399         spin_lock_irqsave(&lat->lock, flags);                           \
 400         lat->_name.fabric.sum = 0;                                      \
 401         lat->_name.fabric.min = 0xFFFFFFFF;                             \
 402         lat->_name.fabric.max = 0;                                      \
 403         lat->_name.channel.sum = 0;                                     \
 404         lat->_name.channel.min = 0xFFFFFFFF;                            \
 405         lat->_name.channel.max = 0;                                     \
 406         lat->_name.counter = 0;                                         \
 407         spin_unlock_irqrestore(&lat->lock, flags);                      \
 408                                                                         \
 409         return (ssize_t) count;                                         \
 410 }                                                                       \
 411 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,                  \
 412                    zfcp_sysfs_unit_##_name##_latency_show,              \
 413                    zfcp_sysfs_unit_##_name##_latency_store);
 414
 415 ZFCP_DEFINE_LATENCY_ATTR(read);
 416 ZFCP_DEFINE_LATENCY_ATTR(write);
 417 ZFCP_DEFINE_LATENCY_ATTR(cmd);
 418
 419 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)                   \
 420 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,       \
 421                                               struct device_attribute *attr,\
 422                                               char *buf)                 \
 423 {                                                                        \
 424         struct scsi_device *sdev  = to_scsi_device(dev);                 \
 425         struct zfcp_unit *unit = sdev->hostdata;                         \
 426                                                                          \
 427         return sprintf(buf, _format, _value);                            \
 428 }                                                                        \
 429 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 430
 431 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 432                       dev_name(&unit->port->adapter->ccw_device->dev));
 433 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 434                       (unsigned long long) unit->port->wwpn);
 435 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
 436                       (unsigned long long) unit->fcp_lun);
 437
 438 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 439         &dev_attr_fcp_lun,
 440         &dev_attr_wwpn,
 441         &dev_attr_hba_id,
 442         &dev_attr_read_latency,
 443         &dev_attr_write_latency,
 444         &dev_attr_cmd_latency,
 445         NULL
 446 };
 447
 448 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 449                                             struct device_attribute *attr,
 450                                             char *buf)
 451 {
 452         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 453         struct fsf_qtcb_bottom_port *qtcb_port;
 454         struct zfcp_adapter *adapter;
 455         int retval;
 456
 457         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 458         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 459                 return -EOPNOTSUPP;
 460
 461         qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 462         if (!qtcb_port)
 463                 return -ENOMEM;
 464
 465         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 466         if (!retval)
 467                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 468                                  qtcb_port->cb_util, qtcb_port->a_util);
 469         kfree(qtcb_port);
 470         return retval;
 471 }
 472 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 473
 474 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 475                                         struct fsf_statistics_info *stat_inf)
 476 {
 477         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 478         struct fsf_qtcb_bottom_config *qtcb_config;
 479         struct zfcp_adapter *adapter;
 480         int retval;
 481
 482         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 483         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 484                 return -EOPNOTSUPP;
 485
 486         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 487                               GFP_KERNEL);
 488         if (!qtcb_config)
 489                 return -ENOMEM;
 490
 491         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 492         if (!retval)
 493                 *stat_inf = qtcb_config->stat_info;
 494
 495         kfree(qtcb_config);
 496         return retval;
 497 }
 498
 499 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 500 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 501                                                  struct device_attribute *attr,\
 502                                                  char *buf)             \
 503 {                                                                       \
 504         struct fsf_statistics_info stat_info;                           \
 505         int retval;                                                     \
 506                                                                         \
 507         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 508         if (retval)                                                     \
 509                 return retval;                                          \
 510                                                                         \
 511         return sprintf(buf, _format, ## _arg);                          \
 512 }                                                                       \
 513 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 514
 515 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 516                 (unsigned long long) stat_info.input_req,
 517                 (unsigned long long) stat_info.output_req,
 518                 (unsigned long long) stat_info.control_req);
 519
 520 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 521                 (unsigned long long) stat_info.input_mb,
 522                 (unsigned long long) stat_info.output_mb);
 523
 524 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 525                 (unsigned long long) stat_info.seconds_act);
 526
 527 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 528                                               struct device_attribute *attr,
 529                                               char *buf)
 530 {
 531         struct Scsi_Host *scsi_host = class_to_shost(dev);
 532         struct zfcp_qdio *qdio =
 533                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 534         u64 util;
 535
 536         spin_lock_bh(&qdio->stat_lock);
 537         util = qdio->req_q_util;
 538         spin_unlock_bh(&qdio->stat_lock);
 539
 540         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 541                        (unsigned long long)util);
 542 }
 543 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 544
 545 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 546         &dev_attr_utilization,
 547         &dev_attr_requests,
 548         &dev_attr_megabytes,
 549         &dev_attr_seconds_active,
 550         &dev_attr_queue_full,
 551         NULL
 552 };