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_A_ATTR(_name, _format, _value) \
31 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
32 struct device_attribute *at,\
35 struct ccw_device *cdev = to_ccwdev(dev); \
36 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
42 i = sprintf(buf, _format, _value); \
43 zfcp_ccw_adapter_put(adapter); \
46 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
47 zfcp_sysfs_adapter_##_name##_show, NULL);
49 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
50 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
51 (unsigned long long) adapter->peer_wwnn);
52 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
53 (unsigned long long) adapter->peer_wwpn);
54 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
55 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
56 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
57 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
58 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
59 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
61 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
62 atomic_read(&port->status));
63 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
64 (atomic_read(&port->status) &
65 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
66 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
67 (atomic_read(&port->status) &
68 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
70 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
71 zfcp_unit_sdev_status(unit));
72 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
73 (zfcp_unit_sdev_status(unit) &
74 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
75 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
76 (zfcp_unit_sdev_status(unit) &
77 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
79 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
80 struct device_attribute *attr,
83 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
85 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
86 return sprintf(buf, "1\n");
88 return sprintf(buf, "0\n");
91 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
92 struct device_attribute *attr,
93 const char *buf, size_t count)
95 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
98 if (strict_strtoul(buf, 0, &val) || val != 0)
101 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
102 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
103 zfcp_erp_wait(port->adapter);
107 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
108 zfcp_sysfs_port_failed_show,
109 zfcp_sysfs_port_failed_store);
111 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
112 struct device_attribute *attr,
115 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
116 struct scsi_device *sdev;
117 unsigned int status, failed = 1;
119 sdev = zfcp_unit_sdev(unit);
121 status = atomic_read(&sdev_to_zfcp(sdev)->status);
122 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
123 scsi_device_put(sdev);
126 return sprintf(buf, "%d\n", failed);
129 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
130 struct device_attribute *attr,
131 const char *buf, size_t count)
133 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
135 struct scsi_device *sdev;
137 if (strict_strtoul(buf, 0, &val) || val != 0)
140 sdev = zfcp_unit_sdev(unit);
142 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
143 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
145 zfcp_erp_wait(unit->port->adapter);
147 zfcp_unit_scsi_scan(unit);
151 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
152 zfcp_sysfs_unit_failed_show,
153 zfcp_sysfs_unit_failed_store);
155 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
156 struct device_attribute *attr,
159 struct ccw_device *cdev = to_ccwdev(dev);
160 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
166 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
167 i = sprintf(buf, "1\n");
169 i = sprintf(buf, "0\n");
171 zfcp_ccw_adapter_put(adapter);
175 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
176 struct device_attribute *attr,
177 const char *buf, size_t count)
179 struct ccw_device *cdev = to_ccwdev(dev);
180 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
187 if (strict_strtoul(buf, 0, &val) || val != 0) {
192 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
193 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
195 zfcp_erp_wait(adapter);
197 zfcp_ccw_adapter_put(adapter);
198 return retval ? retval : (ssize_t) count;
200 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
201 zfcp_sysfs_adapter_failed_show,
202 zfcp_sysfs_adapter_failed_store);
204 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
205 struct device_attribute *attr,
206 const char *buf, size_t count)
208 struct ccw_device *cdev = to_ccwdev(dev);
209 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
214 /* sync the user-space- with the kernel-invocation of scan_work */
215 queue_work(adapter->work_queue, &adapter->scan_work);
216 flush_work(&adapter->scan_work);
217 zfcp_ccw_adapter_put(adapter);
219 return (ssize_t) count;
221 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
222 zfcp_sysfs_port_rescan_store);
224 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
226 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
227 struct device_attribute *attr,
228 const char *buf, size_t count)
230 struct ccw_device *cdev = to_ccwdev(dev);
231 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
232 struct zfcp_port *port;
234 int retval = -EINVAL;
239 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn))
242 port = zfcp_get_port_by_wwpn(adapter, wwpn);
248 mutex_lock(&zfcp_sysfs_port_units_mutex);
249 if (atomic_read(&port->units) > 0) {
251 mutex_unlock(&zfcp_sysfs_port_units_mutex);
254 /* port is about to be removed, so no more unit_add */
255 atomic_set(&port->units, -1);
256 mutex_unlock(&zfcp_sysfs_port_units_mutex);
258 write_lock_irq(&adapter->port_list_lock);
259 list_del(&port->list);
260 write_unlock_irq(&adapter->port_list_lock);
262 put_device(&port->dev);
264 zfcp_erp_port_shutdown(port, 0, "syprs_1");
265 device_unregister(&port->dev);
267 zfcp_ccw_adapter_put(adapter);
268 return retval ? retval : (ssize_t) count;
270 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
271 zfcp_sysfs_port_remove_store);
273 static struct attribute *zfcp_adapter_attrs[] = {
274 &dev_attr_adapter_failed.attr,
275 &dev_attr_adapter_in_recovery.attr,
276 &dev_attr_adapter_port_remove.attr,
277 &dev_attr_adapter_port_rescan.attr,
278 &dev_attr_adapter_peer_wwnn.attr,
279 &dev_attr_adapter_peer_wwpn.attr,
280 &dev_attr_adapter_peer_d_id.attr,
281 &dev_attr_adapter_card_version.attr,
282 &dev_attr_adapter_lic_version.attr,
283 &dev_attr_adapter_status.attr,
284 &dev_attr_adapter_hardware_version.attr,
288 struct attribute_group zfcp_sysfs_adapter_attrs = {
289 .attrs = zfcp_adapter_attrs,
292 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
293 struct device_attribute *attr,
294 const char *buf, size_t count)
296 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
300 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
303 retval = zfcp_unit_add(port, fcp_lun);
309 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
311 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
312 struct device_attribute *attr,
313 const char *buf, size_t count)
315 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
318 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
321 if (zfcp_unit_remove(port, fcp_lun))
326 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
328 static struct attribute *zfcp_port_attrs[] = {
329 &dev_attr_unit_add.attr,
330 &dev_attr_unit_remove.attr,
331 &dev_attr_port_failed.attr,
332 &dev_attr_port_in_recovery.attr,
333 &dev_attr_port_status.attr,
334 &dev_attr_port_access_denied.attr,
337 static struct attribute_group zfcp_port_attr_group = {
338 .attrs = zfcp_port_attrs,
340 const struct attribute_group *zfcp_port_attr_groups[] = {
341 &zfcp_port_attr_group,
345 static struct attribute *zfcp_unit_attrs[] = {
346 &dev_attr_unit_failed.attr,
347 &dev_attr_unit_in_recovery.attr,
348 &dev_attr_unit_status.attr,
349 &dev_attr_unit_access_denied.attr,
352 static struct attribute_group zfcp_unit_attr_group = {
353 .attrs = zfcp_unit_attrs,
355 const struct attribute_group *zfcp_unit_attr_groups[] = {
356 &zfcp_unit_attr_group,
360 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
362 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
363 struct device_attribute *attr, \
365 struct scsi_device *sdev = to_scsi_device(dev); \
366 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
367 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
368 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
369 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
371 spin_lock_bh(&lat->lock); \
372 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
373 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
374 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
375 csum = lat->_name.channel.sum * adapter->timer_ticks; \
376 cmin = lat->_name.channel.min * adapter->timer_ticks; \
377 cmax = lat->_name.channel.max * adapter->timer_ticks; \
378 cc = lat->_name.counter; \
379 spin_unlock_bh(&lat->lock); \
381 do_div(fsum, 1000); \
382 do_div(fmin, 1000); \
383 do_div(fmax, 1000); \
384 do_div(csum, 1000); \
385 do_div(cmin, 1000); \
386 do_div(cmax, 1000); \
388 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
389 fmin, fmax, fsum, cmin, cmax, csum, cc); \
392 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
393 struct device_attribute *attr, \
394 const char *buf, size_t count) \
396 struct scsi_device *sdev = to_scsi_device(dev); \
397 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
398 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
399 unsigned long flags; \
401 spin_lock_irqsave(&lat->lock, flags); \
402 lat->_name.fabric.sum = 0; \
403 lat->_name.fabric.min = 0xFFFFFFFF; \
404 lat->_name.fabric.max = 0; \
405 lat->_name.channel.sum = 0; \
406 lat->_name.channel.min = 0xFFFFFFFF; \
407 lat->_name.channel.max = 0; \
408 lat->_name.counter = 0; \
409 spin_unlock_irqrestore(&lat->lock, flags); \
411 return (ssize_t) count; \
413 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
414 zfcp_sysfs_unit_##_name##_latency_show, \
415 zfcp_sysfs_unit_##_name##_latency_store);
417 ZFCP_DEFINE_LATENCY_ATTR(read);
418 ZFCP_DEFINE_LATENCY_ATTR(write);
419 ZFCP_DEFINE_LATENCY_ATTR(cmd);
421 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
422 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
423 struct device_attribute *attr,\
426 struct scsi_device *sdev = to_scsi_device(dev); \
427 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
428 struct zfcp_port *port = zfcp_sdev->port; \
430 return sprintf(buf, _format, _value); \
432 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
434 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
435 dev_name(&port->adapter->ccw_device->dev));
436 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
437 (unsigned long long) port->wwpn);
439 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
440 struct device_attribute *attr,
443 struct scsi_device *sdev = to_scsi_device(dev);
445 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
447 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
449 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
453 &dev_attr_read_latency,
454 &dev_attr_write_latency,
455 &dev_attr_cmd_latency,
459 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
460 struct device_attribute *attr,
463 struct Scsi_Host *scsi_host = dev_to_shost(dev);
464 struct fsf_qtcb_bottom_port *qtcb_port;
465 struct zfcp_adapter *adapter;
468 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
469 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
472 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
476 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
478 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
479 qtcb_port->cb_util, qtcb_port->a_util);
483 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
485 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
486 struct fsf_statistics_info *stat_inf)
488 struct Scsi_Host *scsi_host = dev_to_shost(dev);
489 struct fsf_qtcb_bottom_config *qtcb_config;
490 struct zfcp_adapter *adapter;
493 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
494 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
497 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
502 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
504 *stat_inf = qtcb_config->stat_info;
510 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
511 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
512 struct device_attribute *attr,\
515 struct fsf_statistics_info stat_info; \
518 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
522 return sprintf(buf, _format, ## _arg); \
524 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
526 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
527 (unsigned long long) stat_info.input_req,
528 (unsigned long long) stat_info.output_req,
529 (unsigned long long) stat_info.control_req);
531 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
532 (unsigned long long) stat_info.input_mb,
533 (unsigned long long) stat_info.output_mb);
535 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
536 (unsigned long long) stat_info.seconds_act);
538 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
539 struct device_attribute *attr,
542 struct Scsi_Host *scsi_host = class_to_shost(dev);
543 struct zfcp_qdio *qdio =
544 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
547 spin_lock_bh(&qdio->stat_lock);
548 util = qdio->req_q_util;
549 spin_unlock_bh(&qdio->stat_lock);
551 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
552 (unsigned long long)util);
554 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
556 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
557 &dev_attr_utilization,
560 &dev_attr_seconds_active,
561 &dev_attr_queue_full,