drivers/s390/scsi/zfcp_sysfs.c

   1 /*
   2  * zfcp device driver
   3  *
   4  * sysfs attributes.
   5  *
   6  * Copyright IBM Corporation 2008, 2010
   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, 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 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value)                           \
  30 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,         \
  31                                                  struct device_attribute *at,\
  32                                                  char *buf)                  \
  33 {                                                                            \
  34         struct ccw_device *cdev = to_ccwdev(dev);                            \
  35         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);       \
  36         int i;                                                               \
  37                                                                              \
  38         if (!adapter)                                                        \
  39                 return -ENODEV;                                              \
  40                                                                              \
  41         i = sprintf(buf, _format, _value);                                   \
  42         zfcp_ccw_adapter_put(adapter);                                       \
  43         return i;                                                            \
  44 }                                                                            \
  45 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO,                                \
  46                      zfcp_sysfs_adapter_##_name##_show, NULL);
  47
  48 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
  49 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
  50                    (unsigned long long) adapter->peer_wwnn);
  51 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
  52                    (unsigned long long) adapter->peer_wwpn);
  53 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
  54 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
  55 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
  56 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
  57 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
  58                                          ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  59
  60 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
  61                  atomic_read(&port->status));
  62 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
  63                  (atomic_read(&port->status) &
  64                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  65 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
  66                  (atomic_read(&port->status) &
  67                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  68
  69 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
  70                  atomic_read(&unit->status));
  71 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
  72                  (atomic_read(&unit->status) &
  73                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  74 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
  75                  (atomic_read(&unit->status) &
  76                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  77 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
  78                  (atomic_read(&unit->status) &
  79                   ZFCP_STATUS_UNIT_SHARED) != 0);
  80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
  81                  (atomic_read(&unit->status) &
  82                   ZFCP_STATUS_UNIT_READONLY) != 0);
  83
  84 #define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id)     \
  85 static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev,            \
  86                                                 struct device_attribute *attr, \
  87                                                 char *buf)                     \
  88 {                                                                              \
  89         struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
  90                                                                                \
  91         if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED)       \
  92                 return sprintf(buf, "1\n");                                    \
  93         else                                                                   \
  94                 return sprintf(buf, "0\n");                                    \
  95 }                                                                              \
  96 static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev,           \
  97                                                  struct device_attribute *attr,\
  98                                                  const char *buf, size_t count)\
  99 {                                                                              \
 100         struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
 101         unsigned long val;                                                     \
 102         int retval = 0;                                                        \
 103                                                                                \
 104         if (!(_feat && get_device(&_feat->dev)))                               \
 105                 return -EBUSY;                                                 \
 106                                                                                \
 107         if (strict_strtoul(buf, 0, &val) || val != 0) {                        \
 108                 retval = -EINVAL;                                              \
 109                 goto out;                                                      \
 110         }                                                                      \
 111                                                                                \
 112         zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL,                 \
 113                                          ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
 114         zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED,        \
 115                                   _reopen_id, NULL);                           \
 116         zfcp_erp_wait(_adapter);                                               \
 117 out:                                                                           \
 118         put_device(&_feat->dev);                                               \
 119         return retval ? retval : (ssize_t) count;                              \
 120 }                                                                              \
 121 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO,                         \
 122                      zfcp_sysfs_##_feat##_failed_show,                         \
 123                      zfcp_sysfs_##_feat##_failed_store);
 124
 125 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2");
 126 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2");
 127
 128 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
 129                                               struct device_attribute *attr,
 130                                               char *buf)
 131 {
 132         struct ccw_device *cdev = to_ccwdev(dev);
 133         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 134         int i;
 135
 136         if (!adapter)
 137                 return -ENODEV;
 138
 139         if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 140                 i = sprintf(buf, "1\n");
 141         else
 142                 i = sprintf(buf, "0\n");
 143
 144         zfcp_ccw_adapter_put(adapter);
 145         return i;
 146 }
 147
 148 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
 149                                                struct device_attribute *attr,
 150                                                const char *buf, size_t count)
 151 {
 152         struct ccw_device *cdev = to_ccwdev(dev);
 153         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 154         unsigned long val;
 155         int retval = 0;
 156
 157         if (!adapter)
 158                 return -ENODEV;
 159
 160         if (strict_strtoul(buf, 0, &val) || val != 0) {
 161                 retval = -EINVAL;
 162                 goto out;
 163         }
 164
 165         zfcp_erp_modify_adapter_status(adapter, "syafai1", NULL,
 166                                        ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
 167         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
 168                                 "syafai2", NULL);
 169         zfcp_erp_wait(adapter);
 170 out:
 171         zfcp_ccw_adapter_put(adapter);
 172         return retval ? retval : (ssize_t) count;
 173 }
 174 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 175                      zfcp_sysfs_adapter_failed_show,
 176                      zfcp_sysfs_adapter_failed_store);
 177
 178 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
 179                                             struct device_attribute *attr,
 180                                             const char *buf, size_t count)
 181 {
 182         struct ccw_device *cdev = to_ccwdev(dev);
 183         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 184
 185         if (!adapter)
 186                 return -ENODEV;
 187
 188         /* sync the user-space- with the kernel-invocation of scan_work */
 189         queue_work(adapter->work_queue, &adapter->scan_work);
 190         flush_work(&adapter->scan_work);
 191         zfcp_ccw_adapter_put(adapter);
 192
 193         return (ssize_t) count;
 194 }
 195 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
 196                      zfcp_sysfs_port_rescan_store);
 197
 198 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
 199                                             struct device_attribute *attr,
 200                                             const char *buf, size_t count)
 201 {
 202         struct ccw_device *cdev = to_ccwdev(dev);
 203         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 204         struct zfcp_port *port;
 205         u64 wwpn;
 206         int retval = -EINVAL;
 207
 208         if (!adapter)
 209                 return -ENODEV;
 210
 211         if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn))
 212                 goto out;
 213
 214         port = zfcp_get_port_by_wwpn(adapter, wwpn);
 215         if (!port)
 216                 goto out;
 217         else
 218                 retval = 0;
 219
 220         write_lock_irq(&adapter->port_list_lock);
 221         list_del(&port->list);
 222         write_unlock_irq(&adapter->port_list_lock);
 223
 224         put_device(&port->dev);
 225
 226         zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL);
 227         zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
 228  out:
 229         zfcp_ccw_adapter_put(adapter);
 230         return retval ? retval : (ssize_t) count;
 231 }
 232 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
 233                      zfcp_sysfs_port_remove_store);
 234
 235 static struct attribute *zfcp_adapter_attrs[] = {
 236         &dev_attr_adapter_failed.attr,
 237         &dev_attr_adapter_in_recovery.attr,
 238         &dev_attr_adapter_port_remove.attr,
 239         &dev_attr_adapter_port_rescan.attr,
 240         &dev_attr_adapter_peer_wwnn.attr,
 241         &dev_attr_adapter_peer_wwpn.attr,
 242         &dev_attr_adapter_peer_d_id.attr,
 243         &dev_attr_adapter_card_version.attr,
 244         &dev_attr_adapter_lic_version.attr,
 245         &dev_attr_adapter_status.attr,
 246         &dev_attr_adapter_hardware_version.attr,
 247         NULL
 248 };
 249
 250 struct attribute_group zfcp_sysfs_adapter_attrs = {
 251         .attrs = zfcp_adapter_attrs,
 252 };
 253
 254 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
 255                                          struct device_attribute *attr,
 256                                          const char *buf, size_t count)
 257 {
 258         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 259         struct zfcp_unit *unit;
 260         u64 fcp_lun;
 261         int retval = -EINVAL;
 262
 263         if (!(port && get_device(&port->dev)))
 264                 return -EBUSY;
 265
 266         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 267                 goto out;
 268
 269         unit = zfcp_unit_enqueue(port, fcp_lun);
 270         if (IS_ERR(unit))
 271                 goto out;
 272         else
 273                 retval = 0;
 274
 275         zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
 276         zfcp_erp_wait(unit->port->adapter);
 277         flush_work(&unit->scsi_work);
 278 out:
 279         put_device(&port->dev);
 280         return retval ? retval : (ssize_t) count;
 281 }
 282 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
 283
 284 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 285                                             struct device_attribute *attr,
 286                                             const char *buf, size_t count)
 287 {
 288         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 289         struct zfcp_unit *unit;
 290         u64 fcp_lun;
 291         int retval = -EINVAL;
 292
 293         if (!(port && get_device(&port->dev)))
 294                 return -EBUSY;
 295
 296         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 297                 goto out;
 298
 299         unit = zfcp_get_unit_by_lun(port, fcp_lun);
 300         if (!unit)
 301                 goto out;
 302         else
 303                 retval = 0;
 304
 305         /* wait for possible timeout during SCSI probe */
 306         flush_work(&unit->scsi_work);
 307
 308         write_lock_irq(&port->unit_list_lock);
 309         list_del(&unit->list);
 310         write_unlock_irq(&port->unit_list_lock);
 311
 312         put_device(&unit->dev);
 313
 314         zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
 315         zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
 316 out:
 317         put_device(&port->dev);
 318         return retval ? retval : (ssize_t) count;
 319 }
 320 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
 321
 322 static struct attribute *zfcp_port_attrs[] = {
 323         &dev_attr_unit_add.attr,
 324         &dev_attr_unit_remove.attr,
 325         &dev_attr_port_failed.attr,
 326         &dev_attr_port_in_recovery.attr,
 327         &dev_attr_port_status.attr,
 328         &dev_attr_port_access_denied.attr,
 329         NULL
 330 };
 331
 332 /**
 333  * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
 334  */
 335 struct attribute_group zfcp_sysfs_port_attrs = {
 336         .attrs = zfcp_port_attrs,
 337 };
 338
 339 static struct attribute *zfcp_unit_attrs[] = {
 340         &dev_attr_unit_failed.attr,
 341         &dev_attr_unit_in_recovery.attr,
 342         &dev_attr_unit_status.attr,
 343         &dev_attr_unit_access_denied.attr,
 344         &dev_attr_unit_access_shared.attr,
 345         &dev_attr_unit_access_readonly.attr,
 346         NULL
 347 };
 348
 349 struct attribute_group zfcp_sysfs_unit_attrs = {
 350         .attrs = zfcp_unit_attrs,
 351 };
 352
 353 #define ZFCP_DEFINE_LATENCY_ATTR(_name)                                 \
 354 static ssize_t                                                          \
 355 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,              \
 356                                        struct device_attribute *attr,   \
 357                                        char *buf) {                     \
 358         struct scsi_device *sdev = to_scsi_device(dev);                 \
 359         struct zfcp_unit *unit = sdev->hostdata;                        \
 360         struct zfcp_latencies *lat = &unit->latencies;                  \
 361         struct zfcp_adapter *adapter = unit->port->adapter;             \
 362         unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;      \
 363                                                                         \
 364         spin_lock_bh(&lat->lock);                                       \
 365         fsum = lat->_name.fabric.sum * adapter->timer_ticks;            \
 366         fmin = lat->_name.fabric.min * adapter->timer_ticks;            \
 367         fmax = lat->_name.fabric.max * adapter->timer_ticks;            \
 368         csum = lat->_name.channel.sum * adapter->timer_ticks;           \
 369         cmin = lat->_name.channel.min * adapter->timer_ticks;           \
 370         cmax = lat->_name.channel.max * adapter->timer_ticks;           \
 371         cc  = lat->_name.counter;                                       \
 372         spin_unlock_bh(&lat->lock);                                     \
 373                                                                         \
 374         do_div(fsum, 1000);                                             \
 375         do_div(fmin, 1000);                                             \
 376         do_div(fmax, 1000);                                             \
 377         do_div(csum, 1000);                                             \
 378         do_div(cmin, 1000);                                             \
 379         do_div(cmax, 1000);                                             \
 380                                                                         \
 381         return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",     \
 382                        fmin, fmax, fsum, cmin, cmax, csum, cc);         \
 383 }                                                                       \
 384 static ssize_t                                                          \
 385 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,             \
 386                                         struct device_attribute *attr,  \
 387                                         const char *buf, size_t count)  \
 388 {                                                                       \
 389         struct scsi_device *sdev = to_scsi_device(dev);                 \
 390         struct zfcp_unit *unit = sdev->hostdata;                        \
 391         struct zfcp_latencies *lat = &unit->latencies;                  \
 392         unsigned long flags;                                            \
 393                                                                         \
 394         spin_lock_irqsave(&lat->lock, flags);                           \
 395         lat->_name.fabric.sum = 0;                                      \
 396         lat->_name.fabric.min = 0xFFFFFFFF;                             \
 397         lat->_name.fabric.max = 0;                                      \
 398         lat->_name.channel.sum = 0;                                     \
 399         lat->_name.channel.min = 0xFFFFFFFF;                            \
 400         lat->_name.channel.max = 0;                                     \
 401         lat->_name.counter = 0;                                         \
 402         spin_unlock_irqrestore(&lat->lock, flags);                      \
 403                                                                         \
 404         return (ssize_t) count;                                         \
 405 }                                                                       \
 406 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,                  \
 407                    zfcp_sysfs_unit_##_name##_latency_show,              \
 408                    zfcp_sysfs_unit_##_name##_latency_store);
 409
 410 ZFCP_DEFINE_LATENCY_ATTR(read);
 411 ZFCP_DEFINE_LATENCY_ATTR(write);
 412 ZFCP_DEFINE_LATENCY_ATTR(cmd);
 413
 414 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)                   \
 415 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,       \
 416                                               struct device_attribute *attr,\
 417                                               char *buf)                 \
 418 {                                                                        \
 419         struct scsi_device *sdev  = to_scsi_device(dev);                 \
 420         struct zfcp_unit *unit = sdev->hostdata;                         \
 421                                                                          \
 422         return sprintf(buf, _format, _value);                            \
 423 }                                                                        \
 424 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 425
 426 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 427                       dev_name(&unit->port->adapter->ccw_device->dev));
 428 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 429                       (unsigned long long) unit->port->wwpn);
 430 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
 431                       (unsigned long long) unit->fcp_lun);
 432
 433 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 434         &dev_attr_fcp_lun,
 435         &dev_attr_wwpn,
 436         &dev_attr_hba_id,
 437         &dev_attr_read_latency,
 438         &dev_attr_write_latency,
 439         &dev_attr_cmd_latency,
 440         NULL
 441 };
 442
 443 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 444                                             struct device_attribute *attr,
 445                                             char *buf)
 446 {
 447         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 448         struct fsf_qtcb_bottom_port *qtcb_port;
 449         struct zfcp_adapter *adapter;
 450         int retval;
 451
 452         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 453         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 454                 return -EOPNOTSUPP;
 455
 456         qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 457         if (!qtcb_port)
 458                 return -ENOMEM;
 459
 460         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 461         if (!retval)
 462                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 463                                  qtcb_port->cb_util, qtcb_port->a_util);
 464         kfree(qtcb_port);
 465         return retval;
 466 }
 467 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 468
 469 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 470                                         struct fsf_statistics_info *stat_inf)
 471 {
 472         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 473         struct fsf_qtcb_bottom_config *qtcb_config;
 474         struct zfcp_adapter *adapter;
 475         int retval;
 476
 477         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 478         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 479                 return -EOPNOTSUPP;
 480
 481         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 482                               GFP_KERNEL);
 483         if (!qtcb_config)
 484                 return -ENOMEM;
 485
 486         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 487         if (!retval)
 488                 *stat_inf = qtcb_config->stat_info;
 489
 490         kfree(qtcb_config);
 491         return retval;
 492 }
 493
 494 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 495 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 496                                                  struct device_attribute *attr,\
 497                                                  char *buf)             \
 498 {                                                                       \
 499         struct fsf_statistics_info stat_info;                           \
 500         int retval;                                                     \
 501                                                                         \
 502         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 503         if (retval)                                                     \
 504                 return retval;                                          \
 505                                                                         \
 506         return sprintf(buf, _format, ## _arg);                          \
 507 }                                                                       \
 508 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 509
 510 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 511                 (unsigned long long) stat_info.input_req,
 512                 (unsigned long long) stat_info.output_req,
 513                 (unsigned long long) stat_info.control_req);
 514
 515 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 516                 (unsigned long long) stat_info.input_mb,
 517                 (unsigned long long) stat_info.output_mb);
 518
 519 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 520                 (unsigned long long) stat_info.seconds_act);
 521
 522 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 523                                               struct device_attribute *attr,
 524                                               char *buf)
 525 {
 526         struct Scsi_Host *scsi_host = class_to_shost(dev);
 527         struct zfcp_qdio *qdio =
 528                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 529         u64 util;
 530
 531         spin_lock_bh(&qdio->stat_lock);
 532         util = qdio->req_q_util;
 533         spin_unlock_bh(&qdio->stat_lock);
 534
 535         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 536                        (unsigned long long)util);
 537 }
 538 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 539
 540 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 541         &dev_attr_utilization,
 542         &dev_attr_requests,
 543         &dev_attr_megabytes,
 544         &dev_attr_seconds_active,
 545         &dev_attr_queue_full,
 546         NULL
 547 };