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_adapter_reset_sync(adapter, "syafai2");
 204 out:
 205         zfcp_ccw_adapter_put(adapter);
 206         return retval ? retval : (ssize_t) count;
 207 }
 208 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
 209                      zfcp_sysfs_adapter_failed_show,
 210                      zfcp_sysfs_adapter_failed_store);
 211
 212 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
 213                                             struct device_attribute *attr,
 214                                             const char *buf, size_t count)
 215 {
 216         struct ccw_device *cdev = to_ccwdev(dev);
 217         struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
 218
 219         if (!adapter)
 220                 return -ENODEV;
 221
 222         /*
 223          * Users wish is our command: immediately schedule and flush a
 224          * worker to conduct a synchronous port scan, that is, neither
 225          * a random delay nor a rate limit is applied here.
 226          */
 227         queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
 228         flush_delayed_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                                                                          \
 443         return sprintf(buf, _format, _value);                            \
 444 }                                                                        \
 445 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
 446
 447 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
 448                       dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
 449 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
 450                       (unsigned long long) zfcp_sdev->port->wwpn);
 451
 452 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
 453                                             struct device_attribute *attr,
 454                                             char *buf)
 455 {
 456         struct scsi_device *sdev = to_scsi_device(dev);
 457
 458         return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
 459 }
 460 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
 461
 462 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
 463                       (atomic_read(&zfcp_sdev->status) &
 464                        ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
 465
 466 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
 467                                            struct device_attribute *attr,
 468                                            char *buf)
 469 {
 470         struct scsi_device *sdev = to_scsi_device(dev);
 471         unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
 472         unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
 473
 474         return sprintf(buf, "%d\n", failed);
 475 }
 476
 477 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
 478                                             struct device_attribute *attr,
 479                                             const char *buf, size_t count)
 480 {
 481         struct scsi_device *sdev = to_scsi_device(dev);
 482         unsigned long val;
 483
 484         if (kstrtoul(buf, 0, &val) || val != 0)
 485                 return -EINVAL;
 486
 487         zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
 488         zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
 489                             "syufai3");
 490         zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
 491
 492         return count;
 493 }
 494 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
 495                    zfcp_sysfs_scsi_zfcp_failed_show,
 496                    zfcp_sysfs_scsi_zfcp_failed_store);
 497
 498 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
 499                       (atomic_read(&zfcp_sdev->status) &
 500                        ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
 501
 502 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
 503                       atomic_read(&zfcp_sdev->status));
 504
 505 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
 506         &dev_attr_fcp_lun,
 507         &dev_attr_wwpn,
 508         &dev_attr_hba_id,
 509         &dev_attr_read_latency,
 510         &dev_attr_write_latency,
 511         &dev_attr_cmd_latency,
 512         &dev_attr_zfcp_access_denied,
 513         &dev_attr_zfcp_failed,
 514         &dev_attr_zfcp_in_recovery,
 515         &dev_attr_zfcp_status,
 516         NULL
 517 };
 518
 519 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
 520                                             struct device_attribute *attr,
 521                                             char *buf)
 522 {
 523         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 524         struct fsf_qtcb_bottom_port *qtcb_port;
 525         struct zfcp_adapter *adapter;
 526         int retval;
 527
 528         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 529         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 530                 return -EOPNOTSUPP;
 531
 532         qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
 533         if (!qtcb_port)
 534                 return -ENOMEM;
 535
 536         retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
 537         if (!retval)
 538                 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
 539                                  qtcb_port->cb_util, qtcb_port->a_util);
 540         kfree(qtcb_port);
 541         return retval;
 542 }
 543 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
 544
 545 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
 546                                         struct fsf_statistics_info *stat_inf)
 547 {
 548         struct Scsi_Host *scsi_host = dev_to_shost(dev);
 549         struct fsf_qtcb_bottom_config *qtcb_config;
 550         struct zfcp_adapter *adapter;
 551         int retval;
 552
 553         adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
 554         if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
 555                 return -EOPNOTSUPP;
 556
 557         qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
 558                               GFP_KERNEL);
 559         if (!qtcb_config)
 560                 return -ENOMEM;
 561
 562         retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
 563         if (!retval)
 564                 *stat_inf = qtcb_config->stat_info;
 565
 566         kfree(qtcb_config);
 567         return retval;
 568 }
 569
 570 #define ZFCP_SHOST_ATTR(_name, _format, _arg...)                        \
 571 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,    \
 572                                                  struct device_attribute *attr,\
 573                                                  char *buf)             \
 574 {                                                                       \
 575         struct fsf_statistics_info stat_info;                           \
 576         int retval;                                                     \
 577                                                                         \
 578         retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);         \
 579         if (retval)                                                     \
 580                 return retval;                                          \
 581                                                                         \
 582         return sprintf(buf, _format, ## _arg);                          \
 583 }                                                                       \
 584 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
 585
 586 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
 587                 (unsigned long long) stat_info.input_req,
 588                 (unsigned long long) stat_info.output_req,
 589                 (unsigned long long) stat_info.control_req);
 590
 591 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
 592                 (unsigned long long) stat_info.input_mb,
 593                 (unsigned long long) stat_info.output_mb);
 594
 595 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
 596                 (unsigned long long) stat_info.seconds_act);
 597
 598 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 599                                               struct device_attribute *attr,
 600                                               char *buf)
 601 {
 602         struct Scsi_Host *scsi_host = class_to_shost(dev);
 603         struct zfcp_qdio *qdio =
 604                 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
 605         u64 util;
 606
 607         spin_lock_bh(&qdio->stat_lock);
 608         util = qdio->req_q_util;
 609         spin_unlock_bh(&qdio->stat_lock);
 610
 611         return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
 612                        (unsigned long long)util);
 613 }
 614 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 615
 616 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
 617         &dev_attr_utilization,
 618         &dev_attr_requests,
 619         &dev_attr_megabytes,
 620         &dev_attr_seconds_active,
 621         &dev_attr_queue_full,
 622         NULL
 623 };