6 * Copyright IBM Corp. 2008, 2010
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/slab.h>
15 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
16 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
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,\
23 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
25 return sprintf(buf, _format, _value); \
27 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
28 zfcp_sysfs_##_feat##_##_name##_show, NULL);
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,\
35 return sprintf(buf, _format, _value); \
37 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
38 zfcp_sysfs_##_feat##_##_name##_show, NULL);
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,\
45 struct ccw_device *cdev = to_ccwdev(dev); \
46 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
52 i = sprintf(buf, _format, _value); \
53 zfcp_ccw_adapter_put(adapter); \
56 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
57 zfcp_sysfs_adapter_##_name##_show, NULL);
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);
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_CONST(port, access_denied, "%d\n", 0);
78 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
79 zfcp_unit_sdev_status(unit));
80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
81 (zfcp_unit_sdev_status(unit) &
82 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
83 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
84 (zfcp_unit_sdev_status(unit) &
85 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
86 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
87 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
89 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
90 struct device_attribute *attr,
93 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
95 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
96 return sprintf(buf, "1\n");
98 return sprintf(buf, "0\n");
101 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
102 struct device_attribute *attr,
103 const char *buf, size_t count)
105 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
108 if (kstrtoul(buf, 0, &val) || val != 0)
111 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
112 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
113 zfcp_erp_wait(port->adapter);
117 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
118 zfcp_sysfs_port_failed_show,
119 zfcp_sysfs_port_failed_store);
121 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
122 struct device_attribute *attr,
125 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
126 struct scsi_device *sdev;
127 unsigned int status, failed = 1;
129 sdev = zfcp_unit_sdev(unit);
131 status = atomic_read(&sdev_to_zfcp(sdev)->status);
132 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
133 scsi_device_put(sdev);
136 return sprintf(buf, "%d\n", failed);
139 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
140 struct device_attribute *attr,
141 const char *buf, size_t count)
143 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
145 struct scsi_device *sdev;
147 if (kstrtoul(buf, 0, &val) || val != 0)
150 sdev = zfcp_unit_sdev(unit);
152 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
153 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
155 zfcp_erp_wait(unit->port->adapter);
157 zfcp_unit_scsi_scan(unit);
161 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
162 zfcp_sysfs_unit_failed_show,
163 zfcp_sysfs_unit_failed_store);
165 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
166 struct device_attribute *attr,
169 struct ccw_device *cdev = to_ccwdev(dev);
170 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
176 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
177 i = sprintf(buf, "1\n");
179 i = sprintf(buf, "0\n");
181 zfcp_ccw_adapter_put(adapter);
185 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
186 struct device_attribute *attr,
187 const char *buf, size_t count)
189 struct ccw_device *cdev = to_ccwdev(dev);
190 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
197 if (kstrtoul(buf, 0, &val) || val != 0) {
202 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
203 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
205 zfcp_erp_wait(adapter);
207 zfcp_ccw_adapter_put(adapter);
208 return retval ? retval : (ssize_t) count;
210 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
211 zfcp_sysfs_adapter_failed_show,
212 zfcp_sysfs_adapter_failed_store);
214 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
215 struct device_attribute *attr,
216 const char *buf, size_t count)
218 struct ccw_device *cdev = to_ccwdev(dev);
219 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
225 * Users wish is our command: immediately schedule and flush a
226 * worker to conduct a synchronous port scan, that is, neither
227 * a random delay nor a rate limit is applied here.
229 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
230 flush_delayed_work(&adapter->scan_work);
231 zfcp_ccw_adapter_put(adapter);
233 return (ssize_t) count;
235 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
236 zfcp_sysfs_port_rescan_store);
238 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
240 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
241 struct device_attribute *attr,
242 const char *buf, size_t count)
244 struct ccw_device *cdev = to_ccwdev(dev);
245 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
246 struct zfcp_port *port;
248 int retval = -EINVAL;
253 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
256 port = zfcp_get_port_by_wwpn(adapter, wwpn);
262 mutex_lock(&zfcp_sysfs_port_units_mutex);
263 if (atomic_read(&port->units) > 0) {
265 mutex_unlock(&zfcp_sysfs_port_units_mutex);
268 /* port is about to be removed, so no more unit_add */
269 atomic_set(&port->units, -1);
270 mutex_unlock(&zfcp_sysfs_port_units_mutex);
272 write_lock_irq(&adapter->port_list_lock);
273 list_del(&port->list);
274 write_unlock_irq(&adapter->port_list_lock);
276 put_device(&port->dev);
278 zfcp_erp_port_shutdown(port, 0, "syprs_1");
279 device_unregister(&port->dev);
281 zfcp_ccw_adapter_put(adapter);
282 return retval ? retval : (ssize_t) count;
284 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
285 zfcp_sysfs_port_remove_store);
287 static struct attribute *zfcp_adapter_attrs[] = {
288 &dev_attr_adapter_failed.attr,
289 &dev_attr_adapter_in_recovery.attr,
290 &dev_attr_adapter_port_remove.attr,
291 &dev_attr_adapter_port_rescan.attr,
292 &dev_attr_adapter_peer_wwnn.attr,
293 &dev_attr_adapter_peer_wwpn.attr,
294 &dev_attr_adapter_peer_d_id.attr,
295 &dev_attr_adapter_card_version.attr,
296 &dev_attr_adapter_lic_version.attr,
297 &dev_attr_adapter_status.attr,
298 &dev_attr_adapter_hardware_version.attr,
302 struct attribute_group zfcp_sysfs_adapter_attrs = {
303 .attrs = zfcp_adapter_attrs,
306 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
307 struct device_attribute *attr,
308 const char *buf, size_t count)
310 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
314 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
317 retval = zfcp_unit_add(port, fcp_lun);
323 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
325 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
326 struct device_attribute *attr,
327 const char *buf, size_t count)
329 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
332 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
335 if (zfcp_unit_remove(port, fcp_lun))
340 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
342 static struct attribute *zfcp_port_attrs[] = {
343 &dev_attr_unit_add.attr,
344 &dev_attr_unit_remove.attr,
345 &dev_attr_port_failed.attr,
346 &dev_attr_port_in_recovery.attr,
347 &dev_attr_port_status.attr,
348 &dev_attr_port_access_denied.attr,
351 static struct attribute_group zfcp_port_attr_group = {
352 .attrs = zfcp_port_attrs,
354 const struct attribute_group *zfcp_port_attr_groups[] = {
355 &zfcp_port_attr_group,
359 static struct attribute *zfcp_unit_attrs[] = {
360 &dev_attr_unit_failed.attr,
361 &dev_attr_unit_in_recovery.attr,
362 &dev_attr_unit_status.attr,
363 &dev_attr_unit_access_denied.attr,
364 &dev_attr_unit_access_shared.attr,
365 &dev_attr_unit_access_readonly.attr,
368 static struct attribute_group zfcp_unit_attr_group = {
369 .attrs = zfcp_unit_attrs,
371 const struct attribute_group *zfcp_unit_attr_groups[] = {
372 &zfcp_unit_attr_group,
376 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
378 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
379 struct device_attribute *attr, \
381 struct scsi_device *sdev = to_scsi_device(dev); \
382 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
383 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
384 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
385 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
387 spin_lock_bh(&lat->lock); \
388 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
389 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
390 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
391 csum = lat->_name.channel.sum * adapter->timer_ticks; \
392 cmin = lat->_name.channel.min * adapter->timer_ticks; \
393 cmax = lat->_name.channel.max * adapter->timer_ticks; \
394 cc = lat->_name.counter; \
395 spin_unlock_bh(&lat->lock); \
397 do_div(fsum, 1000); \
398 do_div(fmin, 1000); \
399 do_div(fmax, 1000); \
400 do_div(csum, 1000); \
401 do_div(cmin, 1000); \
402 do_div(cmax, 1000); \
404 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
405 fmin, fmax, fsum, cmin, cmax, csum, cc); \
408 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
409 struct device_attribute *attr, \
410 const char *buf, size_t count) \
412 struct scsi_device *sdev = to_scsi_device(dev); \
413 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
414 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
415 unsigned long flags; \
417 spin_lock_irqsave(&lat->lock, flags); \
418 lat->_name.fabric.sum = 0; \
419 lat->_name.fabric.min = 0xFFFFFFFF; \
420 lat->_name.fabric.max = 0; \
421 lat->_name.channel.sum = 0; \
422 lat->_name.channel.min = 0xFFFFFFFF; \
423 lat->_name.channel.max = 0; \
424 lat->_name.counter = 0; \
425 spin_unlock_irqrestore(&lat->lock, flags); \
427 return (ssize_t) count; \
429 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
430 zfcp_sysfs_unit_##_name##_latency_show, \
431 zfcp_sysfs_unit_##_name##_latency_store);
433 ZFCP_DEFINE_LATENCY_ATTR(read);
434 ZFCP_DEFINE_LATENCY_ATTR(write);
435 ZFCP_DEFINE_LATENCY_ATTR(cmd);
437 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
438 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
439 struct device_attribute *attr,\
442 struct scsi_device *sdev = to_scsi_device(dev); \
443 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
445 return sprintf(buf, _format, _value); \
447 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
449 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
450 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
451 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
452 (unsigned long long) zfcp_sdev->port->wwpn);
454 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
455 struct device_attribute *attr,
458 struct scsi_device *sdev = to_scsi_device(dev);
460 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
462 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
464 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
465 (atomic_read(&zfcp_sdev->status) &
466 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
468 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
469 struct device_attribute *attr,
472 struct scsi_device *sdev = to_scsi_device(dev);
473 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
474 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
476 return sprintf(buf, "%d\n", failed);
479 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
480 struct device_attribute *attr,
481 const char *buf, size_t count)
483 struct scsi_device *sdev = to_scsi_device(dev);
486 if (kstrtoul(buf, 0, &val) || val != 0)
489 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
490 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
492 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
496 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
497 zfcp_sysfs_scsi_zfcp_failed_show,
498 zfcp_sysfs_scsi_zfcp_failed_store);
500 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
501 (atomic_read(&zfcp_sdev->status) &
502 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
504 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
505 atomic_read(&zfcp_sdev->status));
507 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
511 &dev_attr_read_latency,
512 &dev_attr_write_latency,
513 &dev_attr_cmd_latency,
514 &dev_attr_zfcp_access_denied,
515 &dev_attr_zfcp_failed,
516 &dev_attr_zfcp_in_recovery,
517 &dev_attr_zfcp_status,
521 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
522 struct device_attribute *attr,
525 struct Scsi_Host *scsi_host = dev_to_shost(dev);
526 struct fsf_qtcb_bottom_port *qtcb_port;
527 struct zfcp_adapter *adapter;
530 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
531 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
534 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
538 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
540 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
541 qtcb_port->cb_util, qtcb_port->a_util);
545 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
547 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
548 struct fsf_statistics_info *stat_inf)
550 struct Scsi_Host *scsi_host = dev_to_shost(dev);
551 struct fsf_qtcb_bottom_config *qtcb_config;
552 struct zfcp_adapter *adapter;
555 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
556 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
559 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
564 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
566 *stat_inf = qtcb_config->stat_info;
572 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
573 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
574 struct device_attribute *attr,\
577 struct fsf_statistics_info stat_info; \
580 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
584 return sprintf(buf, _format, ## _arg); \
586 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
588 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
589 (unsigned long long) stat_info.input_req,
590 (unsigned long long) stat_info.output_req,
591 (unsigned long long) stat_info.control_req);
593 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
594 (unsigned long long) stat_info.input_mb,
595 (unsigned long long) stat_info.output_mb);
597 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
598 (unsigned long long) stat_info.seconds_act);
600 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
601 struct device_attribute *attr,
604 struct Scsi_Host *scsi_host = class_to_shost(dev);
605 struct zfcp_qdio *qdio =
606 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
609 spin_lock_bh(&qdio->stat_lock);
610 util = qdio->req_q_util;
611 spin_unlock_bh(&qdio->stat_lock);
613 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
614 (unsigned long long)util);
616 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
618 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
619 &dev_attr_utilization,
622 &dev_attr_seconds_active,
623 &dev_attr_queue_full,