Pileus Git - ~andy/linux/blob - 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 <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 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
  79                  (zfcp_unit_sdev_status(unit) &
  80                   ZFCP_STATUS_LUN_SHARED) != 0);
  81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
  82                  (zfcp_unit_sdev_status(unit) &
  83                   ZFCP_STATUS_LUN_READONLY) != 0);
  84
  85 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
  86                                            struct device_attribute *attr,
  87                                            char *buf)
  88 {
  89         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  90
  91         if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
  92                 return sprintf(buf, "1\n");
  93
  94         return sprintf(buf, "0\n");
  95 }
  96
  97 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
  98                                             struct device_attribute *attr,
  99                                             const char *buf, size_t count)
 100 {
 101         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 102         unsigned long val;
 103
 104         if (strict_strtoul(buf, 0, &val) || val != 0)
 105                 return -EINVAL;
 106
 107         zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
 108         zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
 109         zfcp_erp_wait(port->adapter);
 110
 111         return count;
 112 }
 113 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
 114                      zfcp_sysfs_port_failed_show,
 115                      zfcp_sysfs_port_failed_store);
 116
 117 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
 118                                            struct device_attribute *attr,
 119                                            char *buf)
 120 {
 121         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 122         struct scsi_device *sdev;
 123         unsigned int status, failed = 1;
 124
 125         sdev = zfcp_unit_sdev(unit);
 126         if (sdev) {
 127                 status = atomic_read(&sdev_to_zfcp(sdev)->status);
 128                 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
 129                 scsi_device_put(sdev);
 130         }
 131
 132         return sprintf(buf, "%d\n", failed);
 133 }
 134
 135 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
 136                                             struct device_attribute *attr,
 137                                             const char *buf, size_t count)
 138 {
 139         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 140         unsigned long val;
 141         struct scsi_device *sdev;
 142
 143         if (strict_strtoul(buf, 0, &val) || val != 0)
 144                 return -EINVAL;
 145
 146         sdev = zfcp_unit_sdev(unit);
 147         if (sdev) {
 148                 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
 149                 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
 150                                     "syufai2");
 151                 zfcp_erp_wait(unit->port->adapter);
 152         } else
 153                 zfcp_unit_scsi_scan(unit);
 154
 155         return count;
 156 }
 157 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
 158                      zfcp_sysfs_unit_failed_show,
 159                      zfcp_sysfs_unit_failed_store);
 160
 161 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
 162                                               struct device_attribute *attr,
 163                                               char *buf)
 164 {
 165         struct ccw_device *cdev = to_ccwdev(dev);
 166         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 167         int i;
 168
 169         if (!adapter)
 170                 return -ENODEV;
 171
 172         if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 173                 i = sprintf(buf, "1\n");
 174         else
 175                 i = sprintf(buf, "0\n");
 176
 177         zfcp_ccw_adapter_put(adapter);
 178         return i;
 179 }
 180
 181 static ssize_t zfcp_sysfs_adapter_failed_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         unsigned long val;
 188         int retval = 0;
 189
 190         if (!adapter)
 191                 return -ENODEV;
 192
 193         if (strict_strtoul(buf, 0, &val) || val != 0) {
 194                 retval = -EINVAL;
 195                 goto out;
 196         }
 197
 198         zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
 199         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
 200                                 "syafai2");
 201         zfcp_erp_wait(adapter);
 202 out:
 203         zfcp_ccw_adapter_put(adapter);
 204         return retval ? retval : (ssize_t) count;
 205 }
 206 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 207                      zfcp_sysfs_adapter_failed_show,
 208                      zfcp_sysfs_adapter_failed_store);
 209
 210 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
 211                                             struct device_attribute *attr,
 212                                             const char *buf, size_t count)
 213 {
 214         struct ccw_device *cdev = to_ccwdev(dev);
 215         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 216
 217         if (!adapter)
 218                 return -ENODEV;
 219
 220         /* sync the user-space- with the kernel-invocation of scan_work */
 221         queue_work(adapter->work_queue, &adapter->scan_work);
 222         flush_work(&adapter->scan_work);
 223         zfcp_ccw_adapter_put(adapter);
 224
 225         return (ssize_t) count;
 226 }
 227 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
 228                      zfcp_sysfs_port_rescan_store);
 229
 230 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
 231                                             struct device_attribute *attr,
 232                                             const char *buf, size_t count)
 233 {
 234         struct ccw_device *cdev = to_ccwdev(dev);
 235         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 236         struct zfcp_port *port;
 237         u64 wwpn;
 238         int retval = -EINVAL;
 239
 240         if (!adapter)
 241                 return -ENODEV;
 242
 243         if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn))
 244                 goto out;
 245
 246         port = zfcp_get_port_by_wwpn(adapter, wwpn);
 247         if (!port)
 248                 goto out;
 249         else
 250                 retval = 0;
 251
 252         write_lock_irq(&adapter->port_list_lock);
 253         list_del(&port->list);
 254         write_unlock_irq(&adapter->port_list_lock);
 255
 256         put_device(&port->dev);
 257
 258         zfcp_erp_port_shutdown(port, 0, "syprs_1");
 259         zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
 260  out:
 261         zfcp_ccw_adapter_put(adapter);
 262         return retval ? retval : (ssize_t) count;
 263 }
 264 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
 265                      zfcp_sysfs_port_remove_store);
 266
 267 static struct attribute *zfcp_adapter_attrs[] = {
 268         &dev_attr_adapter_failed.attr,
 269         &dev_attr_adapter_in_recovery.attr,
 270         &dev_attr_adapter_port_remove.attr,
 271         &dev_attr_adapter_port_rescan.attr,
 272         &dev_attr_adapter_peer_wwnn.attr,
 273         &dev_attr_adapter_peer_wwpn.attr,
 274         &dev_attr_adapter_peer_d_id.attr,
 275         &dev_attr_adapter_card_version.attr,
 276         &dev_attr_adapter_lic_version.attr,
 277         &dev_attr_adapter_status.attr,
 278         &dev_attr_adapter_hardware_version.attr,
 279         NULL
 280 };
 281
 282 struct attribute_group zfcp_sysfs_adapter_attrs = {
 283         .attrs = zfcp_adapter_attrs,
 284 };
 285
 286 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
 287                                          struct device_attribute *attr,
 288                                          const char *buf, size_t count)
 289 {
 290         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 291         u64 fcp_lun;
 292
 293         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 294                 return -EINVAL;
 295
 296         if (zfcp_unit_add(port, fcp_lun))
 297                 return -EINVAL;
 298
 299         return count;
 300 }
 301 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
 302
 303 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 304                                             struct device_attribute *attr,
 305                                             const char *buf, size_t count)
 306 {
 307         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 308         u64 fcp_lun;
 309
 310         if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
 311                 return -EINVAL;
 312
 313         if (zfcp_unit_remove(port, fcp_lun))
 314                 return -EINVAL;
 315
 316         return count;
 317 }
 318 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
 319
 320 static struct attribute *zfcp_port_attrs[] = {
 321         &dev_attr_unit_add.attr,
 322         &dev_attr_unit_remove.attr,
 323         &dev_attr_port_failed.attr,
 324         &dev_attr_port_in_recovery.attr,
 325         &dev_attr_port_status.attr,
 326         &dev_attr_port_access_denied.attr,
 327         NULL
 328 };
 329
 330 /**
 331  * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
 332  */
 333 struct attribute_group zfcp_sysfs_port_attrs = {
 334         .attrs = zfcp_port_attrs,
 335 };
 336
 337 static struct attribute *zfcp_unit_attrs[] = {
 338         &dev_attr_unit_failed.attr,
 339         &dev_attr_unit_in_recovery.attr,
 340         &dev_attr_unit_status.attr,
 341         &dev_attr_unit_access_denied.attr,
 342         &dev_attr_unit_access_shared.attr,
 343         &dev_attr_unit_access_readonly.attr,
 344         NULL
 345 };
 346
 347 struct attribute_group zfcp_sysfs_unit_attrs = {
 348         .attrs = zfcp_unit_attrs,
 349 };
 350
 351 #define ZFCP_DEFINE_LATENCY_ATTR(_name)                                 \
 352 static ssize_t                                                          \
 353 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,              \
 354                                        struct device_attribute *attr,   \
 355                                        char *buf) {                     \
 356         struct scsi_device *sdev = to_scsi_device(dev);                 \
 357         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 358         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 359         struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;        \
 360         unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;      \
 361                                                                         \
 362         spin_lock_bh(&lat->lock);                                       \
 363         fsum = lat->_name.fabric.sum * adapter->timer_ticks;            \
 364         fmin = lat->_name.fabric.min * adapter->timer_ticks;            \
 365         fmax = lat->_name.fabric.max * adapter->timer_ticks;            \
 366         csum = lat->_name.channel.sum * adapter->timer_ticks;           \
 367         cmin = lat->_name.channel.min * adapter->timer_ticks;           \
 368         cmax = lat->_name.channel.max * adapter->timer_ticks;           \
 369         cc  = lat->_name.counter;                                       \
 370         spin_unlock_bh(&lat->lock);                                     \
 371                                                                         \
 372         do_div(fsum, 1000);                                             \
 373         do_div(fmin, 1000);                                             \
 374         do_div(fmax, 1000);                                             \
 375         do_div(csum, 1000);                                             \
 376         do_div(cmin, 1000);                                             \
 377         do_div(cmax, 1000);                                             \
 378                                                                         \
 379         return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",     \
 380                        fmin, fmax, fsum, cmin, cmax, csum, cc);         \
 381 }                                                                       \
 382 static ssize_t                                                          \
 383 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,             \
 384                                         struct device_attribute *attr,  \
 385                                         const char *buf, size_t count)  \
 386 {                                                                       \
 387         struct scsi_device *sdev = to_scsi_device(dev);                 \
 388         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 389         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 390         unsigned long flags;                                            \
 391                                                                         \
 392         spin_lock_irqsave(&lat->lock, flags);                           \
 393         lat->_name.fabric.sum = 0;                                      \
 394         lat->_name.fabric.min = 0xFFFFFFFF;                             \
 395         lat->_name.fabric.max = 0;                                      \
 396         lat->_name.channel.sum = 0;                                     \
 397         lat->_name.channel.min = 0xFFFFFFFF;                            \
 398         lat->_name.channel.max = 0;                                     \
 399         lat->_name.counter = 0;                                         \
 400         spin_unlock_irqrestore(&lat->lock, flags);                      \
 401                                                                         \
 402         return (ssize_t) count;                                         \
 403 }                                                                       \
 404 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,                  \
 405                    zfcp_sysfs_unit_##_name##_latency_show,              \
 406                    zfcp_sysfs_unit_##_name##_latency_store);
 407
 408 ZFCP_DEFINE_LATENCY_ATTR(read);
 409 ZFCP_DEFINE_LATENCY_ATTR(write);
 410 ZFCP_DEFINE_LATENCY_ATTR(cmd);
 411
 412 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)                   \
 413 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,       \
 414                                               struct device_attribute *attr,\
 415                                               char *buf)                 \
 416 {                                                                        \
 417         struct scsi_device *sdev = to_scsi_device(dev);                  \
 418         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);            \
 419         struct zfcp_port *port = zfcp_sdev->port;                        \
 420                                                                          \
 421         return sprintf(buf, _format, _value);                            \
 422 }                                                                        \
 423 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 424
 425 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 426                       dev_name(&port->adapter->ccw_device->dev));
 427 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 428                       (unsigned long long) port->wwpn);
 429
 430 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
 431                                             struct device_attribute *attr,
 432                                             char *buf)
 433 {
 434         struct scsi_device *sdev = to_scsi_device(dev);
 435
 436         return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
 437 }
 438 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
 439
 440 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 441         &dev_attr_fcp_lun,
 442         &dev_attr_wwpn,
 443         &dev_attr_hba_id,
 444         &dev_attr_read_latency,
 445         &dev_attr_write_latency,
 446         &dev_attr_cmd_latency,
 447         NULL
 448 };
 449
 450 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 451                                             struct device_attribute *attr,
 452                                             char *buf)
 453 {
 454         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 455         struct fsf_qtcb_bottom_port *qtcb_port;
 456         struct zfcp_adapter *adapter;
 457         int retval;
 458
 459         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 460         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 461                 return -EOPNOTSUPP;
 462
 463         qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 464         if (!qtcb_port)
 465                 return -ENOMEM;
 466
 467         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 468         if (!retval)
 469                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 470                                  qtcb_port->cb_util, qtcb_port->a_util);
 471         kfree(qtcb_port);
 472         return retval;
 473 }
 474 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 475
 476 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 477                                         struct fsf_statistics_info *stat_inf)
 478 {
 479         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 480         struct fsf_qtcb_bottom_config *qtcb_config;
 481         struct zfcp_adapter *adapter;
 482         int retval;
 483
 484         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 485         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 486                 return -EOPNOTSUPP;
 487
 488         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 489                               GFP_KERNEL);
 490         if (!qtcb_config)
 491                 return -ENOMEM;
 492
 493         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 494         if (!retval)
 495                 *stat_inf = qtcb_config->stat_info;
 496
 497         kfree(qtcb_config);
 498         return retval;
 499 }
 500
 501 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 502 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 503                                                  struct device_attribute *attr,\
 504                                                  char *buf)             \
 505 {                                                                       \
 506         struct fsf_statistics_info stat_info;                           \
 507         int retval;                                                     \
 508                                                                         \
 509         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 510         if (retval)                                                     \
 511                 return retval;                                          \
 512                                                                         \
 513         return sprintf(buf, _format, ## _arg);                          \
 514 }                                                                       \
 515 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 516
 517 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 518                 (unsigned long long) stat_info.input_req,
 519                 (unsigned long long) stat_info.output_req,
 520                 (unsigned long long) stat_info.control_req);
 521
 522 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 523                 (unsigned long long) stat_info.input_mb,
 524                 (unsigned long long) stat_info.output_mb);
 525
 526 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 527                 (unsigned long long) stat_info.seconds_act);
 528
 529 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 530                                               struct device_attribute *attr,
 531                                               char *buf)
 532 {
 533         struct Scsi_Host *scsi_host = class_to_shost(dev);
 534         struct zfcp_qdio *qdio =
 535                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 536         u64 util;
 537
 538         spin_lock_bh(&qdio->stat_lock);
 539         util = qdio->req_q_util;
 540         spin_unlock_bh(&qdio->stat_lock);
 541
 542         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 543                        (unsigned long long)util);
 544 }
 545 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 546
 547 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 548         &dev_attr_utilization,
 549         &dev_attr_requests,
 550         &dev_attr_megabytes,
 551         &dev_attr_seconds_active,
 552         &dev_attr_queue_full,
 553         NULL
 554 };