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(zfcp_port, port, access_denied, "%d\n",
77 (atomic_read(&port->status) &
78 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
80 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
81 zfcp_unit_sdev_status(unit));
82 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
83 (zfcp_unit_sdev_status(unit) &
84 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
85 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
86 (zfcp_unit_sdev_status(unit) &
87 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
88 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
89 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
91 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
92 struct device_attribute *attr,
95 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
97 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
98 return sprintf(buf, "1\n");
100 return sprintf(buf, "0\n");
103 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
104 struct device_attribute *attr,
105 const char *buf, size_t count)
107 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
110 if (kstrtoul(buf, 0, &val) || val != 0)
113 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
114 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
115 zfcp_erp_wait(port->adapter);
119 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
120 zfcp_sysfs_port_failed_show,
121 zfcp_sysfs_port_failed_store);
123 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
124 struct device_attribute *attr,
127 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
128 struct scsi_device *sdev;
129 unsigned int status, failed = 1;
131 sdev = zfcp_unit_sdev(unit);
133 status = atomic_read(&sdev_to_zfcp(sdev)->status);
134 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
135 scsi_device_put(sdev);
138 return sprintf(buf, "%d\n", failed);
141 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
142 struct device_attribute *attr,
143 const char *buf, size_t count)
145 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
147 struct scsi_device *sdev;
149 if (kstrtoul(buf, 0, &val) || val != 0)
152 sdev = zfcp_unit_sdev(unit);
154 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
155 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
157 zfcp_erp_wait(unit->port->adapter);
159 zfcp_unit_scsi_scan(unit);
163 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
164 zfcp_sysfs_unit_failed_show,
165 zfcp_sysfs_unit_failed_store);
167 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
168 struct device_attribute *attr,
171 struct ccw_device *cdev = to_ccwdev(dev);
172 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
178 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
179 i = sprintf(buf, "1\n");
181 i = sprintf(buf, "0\n");
183 zfcp_ccw_adapter_put(adapter);
187 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
191 struct ccw_device *cdev = to_ccwdev(dev);
192 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
199 if (kstrtoul(buf, 0, &val) || val != 0) {
204 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
205 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
207 zfcp_erp_wait(adapter);
209 zfcp_ccw_adapter_put(adapter);
210 return retval ? retval : (ssize_t) count;
212 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
213 zfcp_sysfs_adapter_failed_show,
214 zfcp_sysfs_adapter_failed_store);
216 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
217 struct device_attribute *attr,
218 const char *buf, size_t count)
220 struct ccw_device *cdev = to_ccwdev(dev);
221 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
226 /* sync the user-space- with the kernel-invocation of scan_work */
227 queue_work(adapter->work_queue, &adapter->scan_work);
228 flush_work(&adapter->scan_work);
229 zfcp_ccw_adapter_put(adapter);
231 return (ssize_t) count;
233 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
234 zfcp_sysfs_port_rescan_store);
236 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
238 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
239 struct device_attribute *attr,
240 const char *buf, size_t count)
242 struct ccw_device *cdev = to_ccwdev(dev);
243 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
244 struct zfcp_port *port;
246 int retval = -EINVAL;
251 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
254 port = zfcp_get_port_by_wwpn(adapter, wwpn);
260 mutex_lock(&zfcp_sysfs_port_units_mutex);
261 if (atomic_read(&port->units) > 0) {
263 mutex_unlock(&zfcp_sysfs_port_units_mutex);
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);
270 write_lock_irq(&adapter->port_list_lock);
271 list_del(&port->list);
272 write_unlock_irq(&adapter->port_list_lock);
274 put_device(&port->dev);
276 zfcp_erp_port_shutdown(port, 0, "syprs_1");
277 device_unregister(&port->dev);
279 zfcp_ccw_adapter_put(adapter);
280 return retval ? retval : (ssize_t) count;
282 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
283 zfcp_sysfs_port_remove_store);
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,
300 struct attribute_group zfcp_sysfs_adapter_attrs = {
301 .attrs = zfcp_adapter_attrs,
304 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
305 struct device_attribute *attr,
306 const char *buf, size_t count)
308 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
312 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
315 retval = zfcp_unit_add(port, fcp_lun);
321 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
323 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
324 struct device_attribute *attr,
325 const char *buf, size_t count)
327 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
330 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
333 if (zfcp_unit_remove(port, fcp_lun))
338 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
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,
349 static struct attribute_group zfcp_port_attr_group = {
350 .attrs = zfcp_port_attrs,
352 const struct attribute_group *zfcp_port_attr_groups[] = {
353 &zfcp_port_attr_group,
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,
366 static struct attribute_group zfcp_unit_attr_group = {
367 .attrs = zfcp_unit_attrs,
369 const struct attribute_group *zfcp_unit_attr_groups[] = {
370 &zfcp_unit_attr_group,
374 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
376 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
377 struct device_attribute *attr, \
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; \
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); \
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); \
402 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
403 fmin, fmax, fsum, cmin, cmax, csum, cc); \
406 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
407 struct device_attribute *attr, \
408 const char *buf, size_t count) \
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; \
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); \
425 return (ssize_t) count; \
427 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
428 zfcp_sysfs_unit_##_name##_latency_show, \
429 zfcp_sysfs_unit_##_name##_latency_store);
431 ZFCP_DEFINE_LATENCY_ATTR(read);
432 ZFCP_DEFINE_LATENCY_ATTR(write);
433 ZFCP_DEFINE_LATENCY_ATTR(cmd);
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,\
440 struct scsi_device *sdev = to_scsi_device(dev); \
441 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
442 struct zfcp_port *port = zfcp_sdev->port; \
444 return sprintf(buf, _format, _value); \
446 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
448 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
449 dev_name(&port->adapter->ccw_device->dev));
450 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
451 (unsigned long long) port->wwpn);
453 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
454 struct device_attribute *attr,
457 struct scsi_device *sdev = to_scsi_device(dev);
459 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
461 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
463 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
467 &dev_attr_read_latency,
468 &dev_attr_write_latency,
469 &dev_attr_cmd_latency,
473 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
474 struct device_attribute *attr,
477 struct Scsi_Host *scsi_host = dev_to_shost(dev);
478 struct fsf_qtcb_bottom_port *qtcb_port;
479 struct zfcp_adapter *adapter;
482 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
483 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
486 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
490 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
492 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
493 qtcb_port->cb_util, qtcb_port->a_util);
497 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
499 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
500 struct fsf_statistics_info *stat_inf)
502 struct Scsi_Host *scsi_host = dev_to_shost(dev);
503 struct fsf_qtcb_bottom_config *qtcb_config;
504 struct zfcp_adapter *adapter;
507 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
508 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
511 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
516 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
518 *stat_inf = qtcb_config->stat_info;
524 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
525 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
526 struct device_attribute *attr,\
529 struct fsf_statistics_info stat_info; \
532 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
536 return sprintf(buf, _format, ## _arg); \
538 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
540 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
541 (unsigned long long) stat_info.input_req,
542 (unsigned long long) stat_info.output_req,
543 (unsigned long long) stat_info.control_req);
545 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
546 (unsigned long long) stat_info.input_mb,
547 (unsigned long long) stat_info.output_mb);
549 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
550 (unsigned long long) stat_info.seconds_act);
552 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
553 struct device_attribute *attr,
556 struct Scsi_Host *scsi_host = class_to_shost(dev);
557 struct zfcp_qdio *qdio =
558 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
561 spin_lock_bh(&qdio->stat_lock);
562 util = qdio->req_q_util;
563 spin_unlock_bh(&qdio->stat_lock);
565 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
566 (unsigned long long)util);
568 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
570 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
571 &dev_attr_utilization,
574 &dev_attr_seconds_active,
575 &dev_attr_queue_full,