drivers/s390/scsi/zfcp_sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * zfcp device driver
   4  *
   5  * sysfs attributes.
   6  *
   7  * Copyright IBM Corp. 2008, 2010
   8  */
   9
  10 #define KMSG_COMPONENT "zfcp"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/slab.h>
  14 #include "zfcp_ext.h"
  15
  16 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
  17 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
  18                                                             _show, _store)
  19 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value)             \
  20 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,         \
  21                                                    struct device_attribute *at,\
  22                                                    char *buf)                  \
  23 {                                                                              \
  24         struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
  25                                                                                \
  26         return sprintf(buf, _format, _value);                                  \
  27 }                                                                              \
  28 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,                                    \
  29                      zfcp_sysfs_##_feat##_##_name##_show, NULL);
  30
  31 #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value)                  \
  32 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,         \
  33                                                    struct device_attribute *at,\
  34                                                    char *buf)                  \
  35 {                                                                              \
  36         return sprintf(buf, _format, _value);                                  \
  37 }                                                                              \
  38 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,                                    \
  39                      zfcp_sysfs_##_feat##_##_name##_show, NULL);
  40
  41 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value)                           \
  42 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,         \
  43                                                  struct device_attribute *at,\
  44                                                  char *buf)                  \
  45 {                                                                            \
  46         struct ccw_device *cdev = to_ccwdev(dev);                            \
  47         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);       \
  48         int i;                                                               \
  49                                                                              \
  50         if (!adapter)                                                        \
  51                 return -ENODEV;                                              \
  52                                                                              \
  53         i = sprintf(buf, _format, _value);                                   \
  54         zfcp_ccw_adapter_put(adapter);                                       \
  55         return i;                                                            \
  56 }                                                                            \
  57 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO,                                \
  58                      zfcp_sysfs_adapter_##_name##_show, NULL);
  59
  60 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
  61 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
  62                    (unsigned long long) adapter->peer_wwnn);
  63 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
  64                    (unsigned long long) adapter->peer_wwpn);
  65 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
  66 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
  67 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
  68 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
  69 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
  70                                          ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  71
  72 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
  73                  atomic_read(&port->status));
  74 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
  75                  (atomic_read(&port->status) &
  76                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  77 ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
  78
  79 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
  80                  zfcp_unit_sdev_status(unit));
  81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
  82                  (zfcp_unit_sdev_status(unit) &
  83                   ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  84 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
  85                  (zfcp_unit_sdev_status(unit) &
  86                   ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  87 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
  88 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
  89
  90 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
  91                                            struct device_attribute *attr,
  92                                            char *buf)
  93 {
  94         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  95
  96         if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
  97                 return sprintf(buf, "1\n");
  98
  99         return sprintf(buf, "0\n");
 100 }
 101
 102 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
 103                                             struct device_attribute *attr,
 104                                             const char *buf, size_t count)
 105 {
 106         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 107         unsigned long val;
 108
 109         if (kstrtoul(buf, 0, &val) || val != 0)
 110                 return -EINVAL;
 111
 112         zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
 113         zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
 114         zfcp_erp_wait(port->adapter);
 115
 116         return count;
 117 }
 118 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
 119                      zfcp_sysfs_port_failed_show,
 120                      zfcp_sysfs_port_failed_store);
 121
 122 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
 123                                            struct device_attribute *attr,
 124                                            char *buf)
 125 {
 126         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 127         struct scsi_device *sdev;
 128         unsigned int status, failed = 1;
 129
 130         sdev = zfcp_unit_sdev(unit);
 131         if (sdev) {
 132                 status = atomic_read(&sdev_to_zfcp(sdev)->status);
 133                 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
 134                 scsi_device_put(sdev);
 135         }
 136
 137         return sprintf(buf, "%d\n", failed);
 138 }
 139
 140 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
 141                                             struct device_attribute *attr,
 142                                             const char *buf, size_t count)
 143 {
 144         struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
 145         unsigned long val;
 146         struct scsi_device *sdev;
 147
 148         if (kstrtoul(buf, 0, &val) || val != 0)
 149                 return -EINVAL;
 150
 151         sdev = zfcp_unit_sdev(unit);
 152         if (sdev) {
 153                 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
 154                 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
 155                                     "syufai2");
 156                 zfcp_erp_wait(unit->port->adapter);
 157         } else
 158                 zfcp_unit_scsi_scan(unit);
 159
 160         return count;
 161 }
 162 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
 163                      zfcp_sysfs_unit_failed_show,
 164                      zfcp_sysfs_unit_failed_store);
 165
 166 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
 167                                               struct device_attribute *attr,
 168                                               char *buf)
 169 {
 170         struct ccw_device *cdev = to_ccwdev(dev);
 171         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 172         int i;
 173
 174         if (!adapter)
 175                 return -ENODEV;
 176
 177         if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
 178                 i = sprintf(buf, "1\n");
 179         else
 180                 i = sprintf(buf, "0\n");
 181
 182         zfcp_ccw_adapter_put(adapter);
 183         return i;
 184 }
 185
 186 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
 187                                                struct device_attribute *attr,
 188                                                const char *buf, size_t count)
 189 {
 190         struct ccw_device *cdev = to_ccwdev(dev);
 191         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 192         unsigned long val;
 193         int retval = 0;
 194
 195         if (!adapter)
 196                 return -ENODEV;
 197
 198         if (kstrtoul(buf, 0, &val) || val != 0) {
 199                 retval = -EINVAL;
 200                 goto out;
 201         }
 202
 203         zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
 204         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
 205                                 "syafai2");
 206         zfcp_erp_wait(adapter);
 207 out:
 208         zfcp_ccw_adapter_put(adapter);
 209         return retval ? retval : (ssize_t) count;
 210 }
 211 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 212                      zfcp_sysfs_adapter_failed_show,
 213                      zfcp_sysfs_adapter_failed_store);
 214
 215 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
 216                                             struct device_attribute *attr,
 217                                             const char *buf, size_t count)
 218 {
 219         struct ccw_device *cdev = to_ccwdev(dev);
 220         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 221
 222         if (!adapter)
 223                 return -ENODEV;
 224
 225         /*
 226          * Users wish is our command: immediately schedule and flush a
 227          * worker to conduct a synchronous port scan, that is, neither
 228          * a random delay nor a rate limit is applied here.
 229          */
 230         queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
 231         flush_delayed_work(&adapter->scan_work);
 232         zfcp_ccw_adapter_put(adapter);
 233
 234         return (ssize_t) count;
 235 }
 236 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
 237                      zfcp_sysfs_port_rescan_store);
 238
 239 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
 240
 241 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
 242                                             struct device_attribute *attr,
 243                                             const char *buf, size_t count)
 244 {
 245         struct ccw_device *cdev = to_ccwdev(dev);
 246         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 247         struct zfcp_port *port;
 248         u64 wwpn;
 249         int retval = -EINVAL;
 250
 251         if (!adapter)
 252                 return -ENODEV;
 253
 254         if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
 255                 goto out;
 256
 257         port = zfcp_get_port_by_wwpn(adapter, wwpn);
 258         if (!port)
 259                 goto out;
 260         else
 261                 retval = 0;
 262
 263         mutex_lock(&zfcp_sysfs_port_units_mutex);
 264         if (atomic_read(&port->units) > 0) {
 265                 retval = -EBUSY;
 266                 mutex_unlock(&zfcp_sysfs_port_units_mutex);
 267                 goto out;
 268         }
 269         /* port is about to be removed, so no more unit_add */
 270         atomic_set(&port->units, -1);
 271         mutex_unlock(&zfcp_sysfs_port_units_mutex);
 272
 273         write_lock_irq(&adapter->port_list_lock);
 274         list_del(&port->list);
 275         write_unlock_irq(&adapter->port_list_lock);
 276
 277         put_device(&port->dev);
 278
 279         zfcp_erp_port_shutdown(port, 0, "syprs_1");
 280         device_unregister(&port->dev);
 281  out:
 282         zfcp_ccw_adapter_put(adapter);
 283         return retval ? retval : (ssize_t) count;
 284 }
 285 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
 286                      zfcp_sysfs_port_remove_store);
 287
 288 static struct attribute *zfcp_adapter_attrs[] = {
 289         &dev_attr_adapter_failed.attr,
 290         &dev_attr_adapter_in_recovery.attr,
 291         &dev_attr_adapter_port_remove.attr,
 292         &dev_attr_adapter_port_rescan.attr,
 293         &dev_attr_adapter_peer_wwnn.attr,
 294         &dev_attr_adapter_peer_wwpn.attr,
 295         &dev_attr_adapter_peer_d_id.attr,
 296         &dev_attr_adapter_card_version.attr,
 297         &dev_attr_adapter_lic_version.attr,
 298         &dev_attr_adapter_status.attr,
 299         &dev_attr_adapter_hardware_version.attr,
 300         NULL
 301 };
 302
 303 struct attribute_group zfcp_sysfs_adapter_attrs = {
 304         .attrs = zfcp_adapter_attrs,
 305 };
 306
 307 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
 308                                          struct device_attribute *attr,
 309                                          const char *buf, size_t count)
 310 {
 311         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 312         u64 fcp_lun;
 313         int retval;
 314
 315         if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
 316                 return -EINVAL;
 317
 318         retval = zfcp_unit_add(port, fcp_lun);
 319         if (retval)
 320                 return retval;
 321
 322         return count;
 323 }
 324 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
 325
 326 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
 327                                             struct device_attribute *attr,
 328                                             const char *buf, size_t count)
 329 {
 330         struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
 331         u64 fcp_lun;
 332
 333         if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
 334                 return -EINVAL;
 335
 336         if (zfcp_unit_remove(port, fcp_lun))
 337                 return -EINVAL;
 338
 339         return count;
 340 }
 341 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
 342
 343 static struct attribute *zfcp_port_attrs[] = {
 344         &dev_attr_unit_add.attr,
 345         &dev_attr_unit_remove.attr,
 346         &dev_attr_port_failed.attr,
 347         &dev_attr_port_in_recovery.attr,
 348         &dev_attr_port_status.attr,
 349         &dev_attr_port_access_denied.attr,
 350         NULL
 351 };
 352 static struct attribute_group zfcp_port_attr_group = {
 353         .attrs = zfcp_port_attrs,
 354 };
 355 const struct attribute_group *zfcp_port_attr_groups[] = {
 356         &zfcp_port_attr_group,
 357         NULL,
 358 };
 359
 360 static struct attribute *zfcp_unit_attrs[] = {
 361         &dev_attr_unit_failed.attr,
 362         &dev_attr_unit_in_recovery.attr,
 363         &dev_attr_unit_status.attr,
 364         &dev_attr_unit_access_denied.attr,
 365         &dev_attr_unit_access_shared.attr,
 366         &dev_attr_unit_access_readonly.attr,
 367         NULL
 368 };
 369 static struct attribute_group zfcp_unit_attr_group = {
 370         .attrs = zfcp_unit_attrs,
 371 };
 372 const struct attribute_group *zfcp_unit_attr_groups[] = {
 373         &zfcp_unit_attr_group,
 374         NULL,
 375 };
 376
 377 #define ZFCP_DEFINE_LATENCY_ATTR(_name)                                 \
 378 static ssize_t                                                          \
 379 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,              \
 380                                        struct device_attribute *attr,   \
 381                                        char *buf) {                     \
 382         struct scsi_device *sdev = to_scsi_device(dev);                 \
 383         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 384         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 385         struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;        \
 386         unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;      \
 387                                                                         \
 388         spin_lock_bh(&lat->lock);                                       \
 389         fsum = lat->_name.fabric.sum * adapter->timer_ticks;            \
 390         fmin = lat->_name.fabric.min * adapter->timer_ticks;            \
 391         fmax = lat->_name.fabric.max * adapter->timer_ticks;            \
 392         csum = lat->_name.channel.sum * adapter->timer_ticks;           \
 393         cmin = lat->_name.channel.min * adapter->timer_ticks;           \
 394         cmax = lat->_name.channel.max * adapter->timer_ticks;           \
 395         cc  = lat->_name.counter;                                       \
 396         spin_unlock_bh(&lat->lock);                                     \
 397                                                                         \
 398         do_div(fsum, 1000);                                             \
 399         do_div(fmin, 1000);                                             \
 400         do_div(fmax, 1000);                                             \
 401         do_div(csum, 1000);                                             \
 402         do_div(cmin, 1000);                                             \
 403         do_div(cmax, 1000);                                             \
 404                                                                         \
 405         return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",     \
 406                        fmin, fmax, fsum, cmin, cmax, csum, cc);         \
 407 }                                                                       \
 408 static ssize_t                                                          \
 409 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,             \
 410                                         struct device_attribute *attr,  \
 411                                         const char *buf, size_t count)  \
 412 {                                                                       \
 413         struct scsi_device *sdev = to_scsi_device(dev);                 \
 414         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);           \
 415         struct zfcp_latencies *lat = &zfcp_sdev->latencies;             \
 416         unsigned long flags;                                            \
 417                                                                         \
 418         spin_lock_irqsave(&lat->lock, flags);                           \
 419         lat->_name.fabric.sum = 0;                                      \
 420         lat->_name.fabric.min = 0xFFFFFFFF;                             \
 421         lat->_name.fabric.max = 0;                                      \
 422         lat->_name.channel.sum = 0;                                     \
 423         lat->_name.channel.min = 0xFFFFFFFF;                            \
 424         lat->_name.channel.max = 0;                                     \
 425         lat->_name.counter = 0;                                         \
 426         spin_unlock_irqrestore(&lat->lock, flags);                      \
 427                                                                         \
 428         return (ssize_t) count;                                         \
 429 }                                                                       \
 430 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,                  \
 431                    zfcp_sysfs_unit_##_name##_latency_show,              \
 432                    zfcp_sysfs_unit_##_name##_latency_store);
 433
 434 ZFCP_DEFINE_LATENCY_ATTR(read);
 435 ZFCP_DEFINE_LATENCY_ATTR(write);
 436 ZFCP_DEFINE_LATENCY_ATTR(cmd);
 437
 438 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)                   \
 439 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,       \
 440                                               struct device_attribute *attr,\
 441                                               char *buf)                 \
 442 {                                                                        \
 443         struct scsi_device *sdev = to_scsi_device(dev);                  \
 444         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);            \
 445                                                                          \
 446         return sprintf(buf, _format, _value);                            \
 447 }                                                                        \
 448 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 449
 450 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 451                       dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
 452 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 453                       (unsigned long long) zfcp_sdev->port->wwpn);
 454
 455 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
 456                                             struct device_attribute *attr,
 457                                             char *buf)
 458 {
 459         struct scsi_device *sdev = to_scsi_device(dev);
 460
 461         return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
 462 }
 463 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
 464
 465 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
 466                       (atomic_read(&zfcp_sdev->status) &
 467                        ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
 468
 469 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
 470                                            struct device_attribute *attr,
 471                                            char *buf)
 472 {
 473         struct scsi_device *sdev = to_scsi_device(dev);
 474         unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
 475         unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
 476
 477         return sprintf(buf, "%d\n", failed);
 478 }
 479
 480 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
 481                                             struct device_attribute *attr,
 482                                             const char *buf, size_t count)
 483 {
 484         struct scsi_device *sdev = to_scsi_device(dev);
 485         unsigned long val;
 486
 487         if (kstrtoul(buf, 0, &val) || val != 0)
 488                 return -EINVAL;
 489
 490         zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
 491         zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
 492                             "syufai3");
 493         zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
 494
 495         return count;
 496 }
 497 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
 498                    zfcp_sysfs_scsi_zfcp_failed_show,
 499                    zfcp_sysfs_scsi_zfcp_failed_store);
 500
 501 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
 502                       (atomic_read(&zfcp_sdev->status) &
 503                        ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
 504
 505 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
 506                       atomic_read(&zfcp_sdev->status));
 507
 508 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 509         &dev_attr_fcp_lun,
 510         &dev_attr_wwpn,
 511         &dev_attr_hba_id,
 512         &dev_attr_read_latency,
 513         &dev_attr_write_latency,
 514         &dev_attr_cmd_latency,
 515         &dev_attr_zfcp_access_denied,
 516         &dev_attr_zfcp_failed,
 517         &dev_attr_zfcp_in_recovery,
 518         &dev_attr_zfcp_status,
 519         NULL
 520 };
 521
 522 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 523                                             struct device_attribute *attr,
 524                                             char *buf)
 525 {
 526         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 527         struct fsf_qtcb_bottom_port *qtcb_port;
 528         struct zfcp_adapter *adapter;
 529         int retval;
 530
 531         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 532         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 533                 return -EOPNOTSUPP;
 534
 535         qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 536         if (!qtcb_port)
 537                 return -ENOMEM;
 538
 539         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 540         if (!retval)
 541                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 542                                  qtcb_port->cb_util, qtcb_port->a_util);
 543         kfree(qtcb_port);
 544         return retval;
 545 }
 546 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 547
 548 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 549                                         struct fsf_statistics_info *stat_inf)
 550 {
 551         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 552         struct fsf_qtcb_bottom_config *qtcb_config;
 553         struct zfcp_adapter *adapter;
 554         int retval;
 555
 556         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 557         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 558                 return -EOPNOTSUPP;
 559
 560         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 561                               GFP_KERNEL);
 562         if (!qtcb_config)
 563                 return -ENOMEM;
 564
 565         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 566         if (!retval)
 567                 *stat_inf = qtcb_config->stat_info;
 568
 569         kfree(qtcb_config);
 570         return retval;
 571 }
 572
 573 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 574 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 575                                                  struct device_attribute *attr,\
 576                                                  char *buf)             \
 577 {                                                                       \
 578         struct fsf_statistics_info stat_info;                           \
 579         int retval;                                                     \
 580                                                                         \
 581         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 582         if (retval)                                                     \
 583                 return retval;                                          \
 584                                                                         \
 585         return sprintf(buf, _format, ## _arg);                          \
 586 }                                                                       \
 587 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 588
 589 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 590                 (unsigned long long) stat_info.input_req,
 591                 (unsigned long long) stat_info.output_req,
 592                 (unsigned long long) stat_info.control_req);
 593
 594 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 595                 (unsigned long long) stat_info.input_mb,
 596                 (unsigned long long) stat_info.output_mb);
 597
 598 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 599                 (unsigned long long) stat_info.seconds_act);
 600
 601 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 602                                               struct device_attribute *attr,
 603                                               char *buf)
 604 {
 605         struct Scsi_Host *scsi_host = class_to_shost(dev);
 606         struct zfcp_qdio *qdio =
 607                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 608         u64 util;
 609
 610         spin_lock_bh(&qdio->stat_lock);
 611         util = qdio->req_q_util;
 612         spin_unlock_bh(&qdio->stat_lock);
 613
 614         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 615                        (unsigned long long)util);
 616 }
 617 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 618
 619 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 620         &dev_attr_utilization,
 621         &dev_attr_requests,
 622         &dev_attr_megabytes,
 623         &dev_attr_seconds_active,
 624         &dev_attr_queue_full,
 625         NULL
 626 };