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_ATTR_CONST(_feat, _name, _format, _value)                  \
  31 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,         \
  32                                                    struct device_attribute *at,\
  33                                                    char *buf)                  \
  34 {                                                                              \
  35         return sprintf(buf, _format, _value);                                  \
  36 }                                                                              \
  37 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,                                    \
  38                      zfcp_sysfs_##_feat##_##_name##_show, NULL);
  39
  40 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value)                           \
  41 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,         \
  42                                                  struct device_attribute *at,\
  43                                                  char *buf)                  \
  44 {                                                                            \
  45         struct ccw_device *cdev = to_ccwdev(dev);                            \
  46         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);       \
  47         int i;                                                               \
  48                                                                              \
  49         if (!adapter)                                                        \
  50                 return -ENODEV;                                              \
  51                                                                              \
  52         i = sprintf(buf, _format, _value);                                   \
  53         zfcp_ccw_adapter_put(adapter);                                       \
  54         return i;                                                            \
  55 }                                                                            \
  56 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO,                                \
  57                      zfcp_sysfs_adapter_##_name##_show, NULL);
  58
  59 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
  60 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
  61                    (unsigned long long) adapter->peer_wwnn);
  62 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
  63                    (unsigned long long) adapter->peer_wwpn);
  64 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
  65 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
  66 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
  67 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
  68 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
  69                                          ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  70
  71 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
  72                  atomic_read(&port->status));
  73 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
  74                  (atomic_read(&port->status) &
  75                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  76 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
  77                  (atomic_read(&port->status) &
  78                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  79
  80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
  81                  zfcp_unit_sdev_status(unit));
  82 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
  83                  (zfcp_unit_sdev_status(unit) &
  84                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  85 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
  86                  (zfcp_unit_sdev_status(unit) &
  87                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  88 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
  89 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
  90
  91 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
  92                                            struct device_attribute *attr,
  93                                            char *buf)
  94 {
  95         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  96
  97         if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
  98                 return sprintf(buf, "1\n");
  99
 100         return sprintf(buf, "0\n");
 101 }
 102
 103 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
 104                                             struct device_attribute *attr,
 105                                             const char *buf, size_t count)
 106 {
 107         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 108         unsigned long val;
 109
 110         if (kstrtoul(buf, 0, &val) || val != 0)
 111                 return -EINVAL;
 112
 113         zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
 114         zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
 115         zfcp_erp_wait(port->adapter);
 116
 117         return count;
 118 }
 119 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
 120                      zfcp_sysfs_port_failed_show,
 121                      zfcp_sysfs_port_failed_store);
 122
 123 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
 124                                            struct device_attribute *attr,
 125                                            char *buf)
 126 {
 127         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 128         struct scsi_device *sdev;
 129         unsigned int status, failed = 1;
 130
 131         sdev = zfcp_unit_sdev(unit);
 132         if (sdev) {
 133                 status = atomic_read(&sdev_to_zfcp(sdev)->status);
 134                 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
 135                 scsi_device_put(sdev);
 136         }
 137
 138         return sprintf(buf, "%d\n", failed);
 139 }
 140
 141 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
 142                                             struct device_attribute *attr,
 143                                             const char *buf, size_t count)
 144 {
 145         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 146         unsigned long val;
 147         struct scsi_device *sdev;
 148
 149         if (kstrtoul(buf, 0, &val) || val != 0)
 150                 return -EINVAL;
 151
 152         sdev = zfcp_unit_sdev(unit);
 153         if (sdev) {
 154                 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
 155                 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
 156                                     "syufai2");
 157                 zfcp_erp_wait(unit->port->adapter);
 158         } else
 159                 zfcp_unit_scsi_scan(unit);
 160
 161         return count;
 162 }
 163 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
 164                      zfcp_sysfs_unit_failed_show,
 165                      zfcp_sysfs_unit_failed_store);
 166
 167 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
 168                                               struct device_attribute *attr,
 169                                               char *buf)
 170 {
 171         struct ccw_device *cdev = to_ccwdev(dev);
 172         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 173         int i;
 174
 175         if (!adapter)
 176                 return -ENODEV;
 177
 178         if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 179                 i = sprintf(buf, "1\n");
 180         else
 181                 i = sprintf(buf, "0\n");
 182
 183         zfcp_ccw_adapter_put(adapter);
 184         return i;
 185 }
 186
 187 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
 188                                                struct device_attribute *attr,
 189                                                const char *buf, size_t count)
 190 {
 191         struct ccw_device *cdev = to_ccwdev(dev);
 192         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 193         unsigned long val;
 194         int retval = 0;
 195
 196         if (!adapter)
 197                 return -ENODEV;
 198
 199         if (kstrtoul(buf, 0, &val) || val != 0) {
 200                 retval = -EINVAL;
 201                 goto out;
 202         }
 203
 204         zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
 205         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
 206                                 "syafai2");
 207         zfcp_erp_wait(adapter);
 208 out:
 209         zfcp_ccw_adapter_put(adapter);
 210         return retval ? retval : (ssize_t) count;
 211 }
 212 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 213                      zfcp_sysfs_adapter_failed_show,
 214                      zfcp_sysfs_adapter_failed_store);
 215
 216 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
 217                                             struct device_attribute *attr,
 218                                             const char *buf, size_t count)
 219 {
 220         struct ccw_device *cdev = to_ccwdev(dev);
 221         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 222
 223         if (!adapter)
 224                 return -ENODEV;
 225
 226         /* sync the user-space- with the kernel-invocation of scan_work */
 227         queue_work(adapter->work_queue, &adapter->scan_work);
 228         flush_work(&adapter->scan_work);
 229         zfcp_ccw_adapter_put(adapter);
 230
 231         return (ssize_t) count;
 232 }
 233 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
 234                      zfcp_sysfs_port_rescan_store);
 235
 236 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
 237
 238 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
 239                                             struct device_attribute *attr,
 240                                             const char *buf, size_t count)
 241 {
 242         struct ccw_device *cdev = to_ccwdev(dev);
 243         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 244         struct zfcp_port *port;
 245         u64 wwpn;
 246         int retval = -EINVAL;
 247
 248         if (!adapter)
 249                 return -ENODEV;
 250
 251         if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
 252                 goto out;
 253
 254         port = zfcp_get_port_by_wwpn(adapter, wwpn);
 255         if (!port)
 256                 goto out;
 257         else
 258                 retval = 0;
 259
 260         mutex_lock(&zfcp_sysfs_port_units_mutex);
 261         if (atomic_read(&port->units) > 0) {
 262                 retval = -EBUSY;
 263                 mutex_unlock(&zfcp_sysfs_port_units_mutex);
 264                 goto out;
 265         }
 266         /* port is about to be removed, so no more unit_add */
 267         atomic_set(&port->units, -1);
 268         mutex_unlock(&zfcp_sysfs_port_units_mutex);
 269
 270         write_lock_irq(&adapter->port_list_lock);
 271         list_del(&port->list);
 272         write_unlock_irq(&adapter->port_list_lock);
 273
 274         put_device(&port->dev);
 275
 276         zfcp_erp_port_shutdown(port, 0, "syprs_1");
 277         device_unregister(&port->dev);
 278  out:
 279         zfcp_ccw_adapter_put(adapter);
 280         return retval ? retval : (ssize_t) count;
 281 }
 282 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
 283                      zfcp_sysfs_port_remove_store);
 284
 285 static struct attribute *zfcp_adapter_attrs[] = {
 286         &dev_attr_adapter_failed.attr,
 287         &dev_attr_adapter_in_recovery.attr,
 288         &dev_attr_adapter_port_remove.attr,
 289         &dev_attr_adapter_port_rescan.attr,
 290         &dev_attr_adapter_peer_wwnn.attr,
 291         &dev_attr_adapter_peer_wwpn.attr,
 292         &dev_attr_adapter_peer_d_id.attr,
 293         &dev_attr_adapter_card_version.attr,
 294         &dev_attr_adapter_lic_version.attr,
 295         &dev_attr_adapter_status.attr,
 296         &dev_attr_adapter_hardware_version.attr,
 297         NULL
 298 };
 299
 300 struct attribute_group zfcp_sysfs_adapter_attrs = {
 301         .attrs = zfcp_adapter_attrs,
 302 };
 303
 304 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
 305                                          struct device_attribute *attr,
 306                                          const char *buf, size_t count)
 307 {
 308         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 309         u64 fcp_lun;
 310         int retval;
 311
 312         if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
 313                 return -EINVAL;
 314
 315         retval = zfcp_unit_add(port, fcp_lun);
 316         if (retval)
 317                 return retval;
 318
 319         return count;
 320 }
 321 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
 322
 323 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 324                                             struct device_attribute *attr,
 325                                             const char *buf, size_t count)
 326 {
 327         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 328         u64 fcp_lun;
 329
 330         if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
 331                 return -EINVAL;
 332
 333         if (zfcp_unit_remove(port, fcp_lun))
 334                 return -EINVAL;
 335
 336         return count;
 337 }
 338 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
 339
 340 static struct attribute *zfcp_port_attrs[] = {
 341         &dev_attr_unit_add.attr,
 342         &dev_attr_unit_remove.attr,
 343         &dev_attr_port_failed.attr,
 344         &dev_attr_port_in_recovery.attr,
 345         &dev_attr_port_status.attr,
 346         &dev_attr_port_access_denied.attr,
 347         NULL
 348 };
 349 static struct attribute_group zfcp_port_attr_group = {
 350         .attrs = zfcp_port_attrs,
 351 };
 352 const struct attribute_group *zfcp_port_attr_groups[] = {
 353         &zfcp_port_attr_group,
 354         NULL,
 355 };
 356
 357 static struct attribute *zfcp_unit_attrs[] = {
 358         &dev_attr_unit_failed.attr,
 359         &dev_attr_unit_in_recovery.attr,
 360         &dev_attr_unit_status.attr,
 361         &dev_attr_unit_access_denied.attr,
 362         &dev_attr_unit_access_shared.attr,
 363         &dev_attr_unit_access_readonly.attr,
 364         NULL
 365 };
 366 static struct attribute_group zfcp_unit_attr_group = {
 367         .attrs = zfcp_unit_attrs,
 368 };
 369 const struct attribute_group *zfcp_unit_attr_groups[] = {
 370         &zfcp_unit_attr_group,
 371         NULL,
 372 };
 373
 374 #define ZFCP_DEFINE_LATENCY_ATTR(_name)                                 \
 375 static ssize_t                                                          \
 376 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,              \
 377                                        struct device_attribute *attr,   \
 378                                        char *buf) {                     \
 379         struct scsi_device *sdev = to_scsi_device(dev);                 \
 380         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 381         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 382         struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;        \
 383         unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;      \
 384                                                                         \
 385         spin_lock_bh(&lat->lock);                                       \
 386         fsum = lat->_name.fabric.sum * adapter->timer_ticks;            \
 387         fmin = lat->_name.fabric.min * adapter->timer_ticks;            \
 388         fmax = lat->_name.fabric.max * adapter->timer_ticks;            \
 389         csum = lat->_name.channel.sum * adapter->timer_ticks;           \
 390         cmin = lat->_name.channel.min * adapter->timer_ticks;           \
 391         cmax = lat->_name.channel.max * adapter->timer_ticks;           \
 392         cc  = lat->_name.counter;                                       \
 393         spin_unlock_bh(&lat->lock);                                     \
 394                                                                         \
 395         do_div(fsum, 1000);                                             \
 396         do_div(fmin, 1000);                                             \
 397         do_div(fmax, 1000);                                             \
 398         do_div(csum, 1000);                                             \
 399         do_div(cmin, 1000);                                             \
 400         do_div(cmax, 1000);                                             \
 401                                                                         \
 402         return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",     \
 403                        fmin, fmax, fsum, cmin, cmax, csum, cc);         \
 404 }                                                                       \
 405 static ssize_t                                                          \
 406 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,             \
 407                                         struct device_attribute *attr,  \
 408                                         const char *buf, size_t count)  \
 409 {                                                                       \
 410         struct scsi_device *sdev = to_scsi_device(dev);                 \
 411         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 412         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 413         unsigned long flags;                                            \
 414                                                                         \
 415         spin_lock_irqsave(&lat->lock, flags);                           \
 416         lat->_name.fabric.sum = 0;                                      \
 417         lat->_name.fabric.min = 0xFFFFFFFF;                             \
 418         lat->_name.fabric.max = 0;                                      \
 419         lat->_name.channel.sum = 0;                                     \
 420         lat->_name.channel.min = 0xFFFFFFFF;                            \
 421         lat->_name.channel.max = 0;                                     \
 422         lat->_name.counter = 0;                                         \
 423         spin_unlock_irqrestore(&lat->lock, flags);                      \
 424                                                                         \
 425         return (ssize_t) count;                                         \
 426 }                                                                       \
 427 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,                  \
 428                    zfcp_sysfs_unit_##_name##_latency_show,              \
 429                    zfcp_sysfs_unit_##_name##_latency_store);
 430
 431 ZFCP_DEFINE_LATENCY_ATTR(read);
 432 ZFCP_DEFINE_LATENCY_ATTR(write);
 433 ZFCP_DEFINE_LATENCY_ATTR(cmd);
 434
 435 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)                   \
 436 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,       \
 437                                               struct device_attribute *attr,\
 438                                               char *buf)                 \
 439 {                                                                        \
 440         struct scsi_device *sdev = to_scsi_device(dev);                  \
 441         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);            \
 442         struct zfcp_port *port = zfcp_sdev->port;                        \
 443                                                                          \
 444         return sprintf(buf, _format, _value);                            \
 445 }                                                                        \
 446 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 447
 448 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 449                       dev_name(&port->adapter->ccw_device->dev));
 450 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 451                       (unsigned long long) port->wwpn);
 452
 453 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
 454                                             struct device_attribute *attr,
 455                                             char *buf)
 456 {
 457         struct scsi_device *sdev = to_scsi_device(dev);
 458
 459         return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
 460 }
 461 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
 462
 463 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 464         &dev_attr_fcp_lun,
 465         &dev_attr_wwpn,
 466         &dev_attr_hba_id,
 467         &dev_attr_read_latency,
 468         &dev_attr_write_latency,
 469         &dev_attr_cmd_latency,
 470         NULL
 471 };
 472
 473 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 474                                             struct device_attribute *attr,
 475                                             char *buf)
 476 {
 477         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 478         struct fsf_qtcb_bottom_port *qtcb_port;
 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_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 487         if (!qtcb_port)
 488                 return -ENOMEM;
 489
 490         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 491         if (!retval)
 492                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 493                                  qtcb_port->cb_util, qtcb_port->a_util);
 494         kfree(qtcb_port);
 495         return retval;
 496 }
 497 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 498
 499 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 500                                         struct fsf_statistics_info *stat_inf)
 501 {
 502         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 503         struct fsf_qtcb_bottom_config *qtcb_config;
 504         struct zfcp_adapter *adapter;
 505         int retval;
 506
 507         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 508         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 509                 return -EOPNOTSUPP;
 510
 511         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 512                               GFP_KERNEL);
 513         if (!qtcb_config)
 514                 return -ENOMEM;
 515
 516         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 517         if (!retval)
 518                 *stat_inf = qtcb_config->stat_info;
 519
 520         kfree(qtcb_config);
 521         return retval;
 522 }
 523
 524 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 525 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 526                                                  struct device_attribute *attr,\
 527                                                  char *buf)             \
 528 {                                                                       \
 529         struct fsf_statistics_info stat_info;                           \
 530         int retval;                                                     \
 531                                                                         \
 532         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 533         if (retval)                                                     \
 534                 return retval;                                          \
 535                                                                         \
 536         return sprintf(buf, _format, ## _arg);                          \
 537 }                                                                       \
 538 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 539
 540 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 541                 (unsigned long long) stat_info.input_req,
 542                 (unsigned long long) stat_info.output_req,
 543                 (unsigned long long) stat_info.control_req);
 544
 545 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 546                 (unsigned long long) stat_info.input_mb,
 547                 (unsigned long long) stat_info.output_mb);
 548
 549 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 550                 (unsigned long long) stat_info.seconds_act);
 551
 552 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 553                                               struct device_attribute *attr,
 554                                               char *buf)
 555 {
 556         struct Scsi_Host *scsi_host = class_to_shost(dev);
 557         struct zfcp_qdio *qdio =
 558                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 559         u64 util;
 560
 561         spin_lock_bh(&qdio->stat_lock);
 562         util = qdio->req_q_util;
 563         spin_unlock_bh(&qdio->stat_lock);
 564
 565         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 566                        (unsigned long long)util);
 567 }
 568 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 569
 570 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 571         &dev_attr_utilization,
 572         &dev_attr_requests,
 573         &dev_attr_megabytes,
 574         &dev_attr_seconds_active,
 575         &dev_attr_queue_full,
 576         NULL
 577 };