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10#define KMSG_COMPONENT "zfcp"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13#include <linux/slab.h>
14#include "zfcp_diag.h"
15#include "zfcp_ext.h"
16
17#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
18struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
19 _show, _store)
20#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
21static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
22 struct device_attribute *at,\
23 char *buf) \
24{ \
25 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
26 \
27 return sprintf(buf, _format, _value); \
28} \
29static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
30 zfcp_sysfs_##_feat##_##_name##_show, NULL);
31
32#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
33static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
34 struct device_attribute *at,\
35 char *buf) \
36{ \
37 return sprintf(buf, _format, _value); \
38} \
39static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
40 zfcp_sysfs_##_feat##_##_name##_show, NULL);
41
42#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
43static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
44 struct device_attribute *at,\
45 char *buf) \
46{ \
47 struct ccw_device *cdev = to_ccwdev(dev); \
48 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
49 int i; \
50 \
51 if (!adapter) \
52 return -ENODEV; \
53 \
54 i = sprintf(buf, _format, _value); \
55 zfcp_ccw_adapter_put(adapter); \
56 return i; \
57} \
58static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
59 zfcp_sysfs_adapter_##_name##_show, NULL);
60
61ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
62ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
63 (unsigned long long) adapter->peer_wwnn);
64ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
65 (unsigned long long) adapter->peer_wwpn);
66ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
67ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
68ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
69ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
70ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
71 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
72
73ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
74 atomic_read(&port->status));
75ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
76 (atomic_read(&port->status) &
77 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
78ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
79
80ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
81 zfcp_unit_sdev_status(unit));
82ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
83 (zfcp_unit_sdev_status(unit) &
84 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
85ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
86 (zfcp_unit_sdev_status(unit) &
87 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
88ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
89ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
90
91static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
92 struct device_attribute *attr,
93 char *buf)
94{
95 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
96
97 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
98 return sprintf(buf, "1\n");
99
100 return sprintf(buf, "0\n");
101}
102
103static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
104 struct device_attribute *attr,
105 const char *buf, size_t count)
106{
107 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
108 unsigned long val;
109
110 if (kstrtoul(buf, 0, &val) || val != 0)
111 return -EINVAL;
112
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);
116
117 return count;
118}
119static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
120 zfcp_sysfs_port_failed_show,
121 zfcp_sysfs_port_failed_store);
122
123static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
124 struct device_attribute *attr,
125 char *buf)
126{
127 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
128 struct scsi_device *sdev;
129 unsigned int status, failed = 1;
130
131 sdev = zfcp_unit_sdev(unit);
132 if (sdev) {
133 status = atomic_read(&sdev_to_zfcp(sdev)->status);
134 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
135 scsi_device_put(sdev);
136 }
137
138 return sprintf(buf, "%d\n", failed);
139}
140
141static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
142 struct device_attribute *attr,
143 const char *buf, size_t count)
144{
145 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
146 unsigned long val;
147 struct scsi_device *sdev;
148
149 if (kstrtoul(buf, 0, &val) || val != 0)
150 return -EINVAL;
151
152 sdev = zfcp_unit_sdev(unit);
153 if (sdev) {
154 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
155 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
156 "syufai2");
157 zfcp_erp_wait(unit->port->adapter);
158 } else
159 zfcp_unit_scsi_scan(unit);
160
161 return count;
162}
163static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
164 zfcp_sysfs_unit_failed_show,
165 zfcp_sysfs_unit_failed_store);
166
167static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
168 struct device_attribute *attr,
169 char *buf)
170{
171 struct ccw_device *cdev = to_ccwdev(dev);
172 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
173 int i;
174
175 if (!adapter)
176 return -ENODEV;
177
178 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
179 i = sprintf(buf, "1\n");
180 else
181 i = sprintf(buf, "0\n");
182
183 zfcp_ccw_adapter_put(adapter);
184 return i;
185}
186
187static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
188 struct device_attribute *attr,
189 const char *buf, size_t count)
190{
191 struct ccw_device *cdev = to_ccwdev(dev);
192 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
193 unsigned long val;
194 int retval = 0;
195
196 if (!adapter)
197 return -ENODEV;
198
199 if (kstrtoul(buf, 0, &val) || val != 0) {
200 retval = -EINVAL;
201 goto out;
202 }
203
204 zfcp_erp_adapter_reset_sync(adapter, "syafai2");
205out:
206 zfcp_ccw_adapter_put(adapter);
207 return retval ? retval : (ssize_t) count;
208}
209static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
210 zfcp_sysfs_adapter_failed_show,
211 zfcp_sysfs_adapter_failed_store);
212
213static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
214 struct device_attribute *attr,
215 const char *buf, size_t count)
216{
217 struct ccw_device *cdev = to_ccwdev(dev);
218 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
219 int retval = 0;
220
221 if (!adapter)
222 return -ENODEV;
223
224
225
226
227
228
229
230 if (adapter->scsi_host == NULL) {
231 retval = -ENODEV;
232 goto out;
233 }
234
235
236
237
238
239
240 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
241 flush_delayed_work(&adapter->scan_work);
242out:
243 zfcp_ccw_adapter_put(adapter);
244 return retval ? retval : (ssize_t) count;
245}
246static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
247 zfcp_sysfs_port_rescan_store);
248
249DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
250
251static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port)
252{
253 lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
254 atomic_set(&port->units, -1);
255}
256
257bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port)
258{
259 lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
260 return atomic_read(&port->units) == -1;
261}
262
263static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port)
264{
265 struct zfcp_adapter *const adapter = port->adapter;
266 unsigned long flags;
267 struct scsi_device *sdev;
268 bool in_use = true;
269
270 mutex_lock(&zfcp_sysfs_port_units_mutex);
271 if (atomic_read(&port->units) > 0)
272 goto unlock_port_units_mutex;
273
274 spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
275 __shost_for_each_device(sdev, adapter->scsi_host) {
276 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
277
278 if (sdev->sdev_state == SDEV_DEL ||
279 sdev->sdev_state == SDEV_CANCEL)
280 continue;
281 if (zsdev->port != port)
282 continue;
283
284 goto unlock_host_lock;
285 }
286
287
288 zfcp_sysfs_port_set_removing(port);
289 in_use = false;
290
291unlock_host_lock:
292 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
293unlock_port_units_mutex:
294 mutex_unlock(&zfcp_sysfs_port_units_mutex);
295 return in_use;
296}
297
298static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
299 struct device_attribute *attr,
300 const char *buf, size_t count)
301{
302 struct ccw_device *cdev = to_ccwdev(dev);
303 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
304 struct zfcp_port *port;
305 u64 wwpn;
306 int retval = -EINVAL;
307
308 if (!adapter)
309 return -ENODEV;
310
311 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
312 goto out;
313
314 port = zfcp_get_port_by_wwpn(adapter, wwpn);
315 if (!port)
316 goto out;
317 else
318 retval = 0;
319
320 if (zfcp_sysfs_port_in_use(port)) {
321 retval = -EBUSY;
322 put_device(&port->dev);
323 goto out;
324 }
325
326 write_lock_irq(&adapter->port_list_lock);
327 list_del(&port->list);
328 write_unlock_irq(&adapter->port_list_lock);
329
330 zfcp_erp_port_shutdown(port, 0, "syprs_1");
331 device_unregister(&port->dev);
332
333 put_device(&port->dev);
334 out:
335 zfcp_ccw_adapter_put(adapter);
336 return retval ? retval : (ssize_t) count;
337}
338static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
339 zfcp_sysfs_port_remove_store);
340
341static ssize_t
342zfcp_sysfs_adapter_diag_max_age_show(struct device *dev,
343 struct device_attribute *attr, char *buf)
344{
345 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
346 ssize_t rc;
347
348 if (!adapter)
349 return -ENODEV;
350
351
352 rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age);
353
354 zfcp_ccw_adapter_put(adapter);
355 return rc;
356}
357
358static ssize_t
359zfcp_sysfs_adapter_diag_max_age_store(struct device *dev,
360 struct device_attribute *attr,
361 const char *buf, size_t count)
362{
363 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
364 unsigned long max_age;
365 ssize_t rc;
366
367 if (!adapter)
368 return -ENODEV;
369
370 rc = kstrtoul(buf, 10, &max_age);
371 if (rc != 0)
372 goto out;
373
374 adapter->diagnostics->max_age = max_age;
375
376 rc = count;
377out:
378 zfcp_ccw_adapter_put(adapter);
379 return rc;
380}
381static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644,
382 zfcp_sysfs_adapter_diag_max_age_show,
383 zfcp_sysfs_adapter_diag_max_age_store);
384
385static ssize_t zfcp_sysfs_adapter_fc_security_show(
386 struct device *dev, struct device_attribute *attr, char *buf)
387{
388 struct ccw_device *cdev = to_ccwdev(dev);
389 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
390 unsigned int status;
391 int i;
392
393 if (!adapter)
394 return -ENODEV;
395
396
397
398
399
400
401
402 status = atomic_read(&adapter->status);
403 if (0 == (status & ZFCP_STATUS_COMMON_OPEN))
404 i = sprintf(buf, "unknown\n");
405 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
406 i = sprintf(buf, "unsupported\n");
407 else {
408 i = zfcp_fsf_scnprint_fc_security(
409 buf, PAGE_SIZE - 1, adapter->fc_security_algorithms,
410 ZFCP_FSF_PRINT_FMT_LIST);
411 i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
412 }
413
414 zfcp_ccw_adapter_put(adapter);
415 return i;
416}
417static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO,
418 zfcp_sysfs_adapter_fc_security_show,
419 NULL);
420
421static struct attribute *zfcp_adapter_attrs[] = {
422 &dev_attr_adapter_failed.attr,
423 &dev_attr_adapter_in_recovery.attr,
424 &dev_attr_adapter_port_remove.attr,
425 &dev_attr_adapter_port_rescan.attr,
426 &dev_attr_adapter_peer_wwnn.attr,
427 &dev_attr_adapter_peer_wwpn.attr,
428 &dev_attr_adapter_peer_d_id.attr,
429 &dev_attr_adapter_card_version.attr,
430 &dev_attr_adapter_lic_version.attr,
431 &dev_attr_adapter_status.attr,
432 &dev_attr_adapter_hardware_version.attr,
433 &dev_attr_adapter_diag_max_age.attr,
434 &dev_attr_adapter_fc_security.attr,
435 NULL
436};
437
438static const struct attribute_group zfcp_sysfs_adapter_attr_group = {
439 .attrs = zfcp_adapter_attrs,
440};
441
442static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
443 struct device_attribute *attr,
444 const char *buf, size_t count)
445{
446 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
447 u64 fcp_lun;
448 int retval;
449
450 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
451 return -EINVAL;
452
453 retval = zfcp_unit_add(port, fcp_lun);
454 if (retval)
455 return retval;
456
457 return count;
458}
459static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
460
461static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
462 struct device_attribute *attr,
463 const char *buf, size_t count)
464{
465 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
466 u64 fcp_lun;
467
468 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
469 return -EINVAL;
470
471 if (zfcp_unit_remove(port, fcp_lun))
472 return -EINVAL;
473
474 return count;
475}
476static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
477
478static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev,
479 struct device_attribute *attr,
480 char *buf)
481{
482 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
483 struct zfcp_adapter *adapter = port->adapter;
484 unsigned int status = atomic_read(&port->status);
485 int i;
486
487 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
488 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
489 0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) ||
490 0 != (status & ZFCP_STATUS_PORT_LINK_TEST) ||
491 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
492 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
493 i = sprintf(buf, "unknown\n");
494 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
495 i = sprintf(buf, "unsupported\n");
496 else {
497 i = zfcp_fsf_scnprint_fc_security(
498 buf, PAGE_SIZE - 1, port->connection_info,
499 ZFCP_FSF_PRINT_FMT_SINGLEITEM);
500 i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
501 }
502
503 return i;
504}
505static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO,
506 zfcp_sysfs_port_fc_security_show,
507 NULL);
508
509static struct attribute *zfcp_port_attrs[] = {
510 &dev_attr_unit_add.attr,
511 &dev_attr_unit_remove.attr,
512 &dev_attr_port_failed.attr,
513 &dev_attr_port_in_recovery.attr,
514 &dev_attr_port_status.attr,
515 &dev_attr_port_access_denied.attr,
516 &dev_attr_port_fc_security.attr,
517 NULL
518};
519static struct attribute_group zfcp_port_attr_group = {
520 .attrs = zfcp_port_attrs,
521};
522const struct attribute_group *zfcp_port_attr_groups[] = {
523 &zfcp_port_attr_group,
524 NULL,
525};
526
527static struct attribute *zfcp_unit_attrs[] = {
528 &dev_attr_unit_failed.attr,
529 &dev_attr_unit_in_recovery.attr,
530 &dev_attr_unit_status.attr,
531 &dev_attr_unit_access_denied.attr,
532 &dev_attr_unit_access_shared.attr,
533 &dev_attr_unit_access_readonly.attr,
534 NULL
535};
536static struct attribute_group zfcp_unit_attr_group = {
537 .attrs = zfcp_unit_attrs,
538};
539const struct attribute_group *zfcp_unit_attr_groups[] = {
540 &zfcp_unit_attr_group,
541 NULL,
542};
543
544#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
545static ssize_t \
546zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
547 struct device_attribute *attr, \
548 char *buf) { \
549 struct scsi_device *sdev = to_scsi_device(dev); \
550 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
551 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
552 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
553 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
554 \
555 spin_lock_bh(&lat->lock); \
556 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
557 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
558 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
559 csum = lat->_name.channel.sum * adapter->timer_ticks; \
560 cmin = lat->_name.channel.min * adapter->timer_ticks; \
561 cmax = lat->_name.channel.max * adapter->timer_ticks; \
562 cc = lat->_name.counter; \
563 spin_unlock_bh(&lat->lock); \
564 \
565 do_div(fsum, 1000); \
566 do_div(fmin, 1000); \
567 do_div(fmax, 1000); \
568 do_div(csum, 1000); \
569 do_div(cmin, 1000); \
570 do_div(cmax, 1000); \
571 \
572 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
573 fmin, fmax, fsum, cmin, cmax, csum, cc); \
574} \
575static ssize_t \
576zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
577 struct device_attribute *attr, \
578 const char *buf, size_t count) \
579{ \
580 struct scsi_device *sdev = to_scsi_device(dev); \
581 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
582 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
583 unsigned long flags; \
584 \
585 spin_lock_irqsave(&lat->lock, flags); \
586 lat->_name.fabric.sum = 0; \
587 lat->_name.fabric.min = 0xFFFFFFFF; \
588 lat->_name.fabric.max = 0; \
589 lat->_name.channel.sum = 0; \
590 lat->_name.channel.min = 0xFFFFFFFF; \
591 lat->_name.channel.max = 0; \
592 lat->_name.counter = 0; \
593 spin_unlock_irqrestore(&lat->lock, flags); \
594 \
595 return (ssize_t) count; \
596} \
597static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
598 zfcp_sysfs_unit_##_name##_latency_show, \
599 zfcp_sysfs_unit_##_name##_latency_store);
600
601ZFCP_DEFINE_LATENCY_ATTR(read);
602ZFCP_DEFINE_LATENCY_ATTR(write);
603ZFCP_DEFINE_LATENCY_ATTR(cmd);
604
605#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
606static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
607 struct device_attribute *attr,\
608 char *buf) \
609{ \
610 struct scsi_device *sdev = to_scsi_device(dev); \
611 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
612 \
613 return sprintf(buf, _format, _value); \
614} \
615static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
616
617ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
618 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
619ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
620 (unsigned long long) zfcp_sdev->port->wwpn);
621
622static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
623 struct device_attribute *attr,
624 char *buf)
625{
626 struct scsi_device *sdev = to_scsi_device(dev);
627
628 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
629}
630static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
631
632ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
633 (atomic_read(&zfcp_sdev->status) &
634 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
635
636static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
637 struct device_attribute *attr,
638 char *buf)
639{
640 struct scsi_device *sdev = to_scsi_device(dev);
641 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
642 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
643
644 return sprintf(buf, "%d\n", failed);
645}
646
647static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
648 struct device_attribute *attr,
649 const char *buf, size_t count)
650{
651 struct scsi_device *sdev = to_scsi_device(dev);
652 unsigned long val;
653
654 if (kstrtoul(buf, 0, &val) || val != 0)
655 return -EINVAL;
656
657 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
658 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
659 "syufai3");
660 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
661
662 return count;
663}
664static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
665 zfcp_sysfs_scsi_zfcp_failed_show,
666 zfcp_sysfs_scsi_zfcp_failed_store);
667
668ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
669 (atomic_read(&zfcp_sdev->status) &
670 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
671
672ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
673 atomic_read(&zfcp_sdev->status));
674
675struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
676 &dev_attr_fcp_lun,
677 &dev_attr_wwpn,
678 &dev_attr_hba_id,
679 &dev_attr_read_latency,
680 &dev_attr_write_latency,
681 &dev_attr_cmd_latency,
682 &dev_attr_zfcp_access_denied,
683 &dev_attr_zfcp_failed,
684 &dev_attr_zfcp_in_recovery,
685 &dev_attr_zfcp_status,
686 NULL
687};
688
689static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
690 struct device_attribute *attr,
691 char *buf)
692{
693 struct Scsi_Host *scsi_host = dev_to_shost(dev);
694 struct fsf_qtcb_bottom_port *qtcb_port;
695 struct zfcp_adapter *adapter;
696 int retval;
697
698 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
699 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
700 return -EOPNOTSUPP;
701
702 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
703 if (!qtcb_port)
704 return -ENOMEM;
705
706 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
707 if (retval == 0 || retval == -EAGAIN)
708 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
709 qtcb_port->cb_util, qtcb_port->a_util);
710 kfree(qtcb_port);
711 return retval;
712}
713static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
714
715static int zfcp_sysfs_adapter_ex_config(struct device *dev,
716 struct fsf_statistics_info *stat_inf)
717{
718 struct Scsi_Host *scsi_host = dev_to_shost(dev);
719 struct fsf_qtcb_bottom_config *qtcb_config;
720 struct zfcp_adapter *adapter;
721 int retval;
722
723 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
724 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
725 return -EOPNOTSUPP;
726
727 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
728 GFP_KERNEL);
729 if (!qtcb_config)
730 return -ENOMEM;
731
732 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
733 if (retval == 0 || retval == -EAGAIN)
734 *stat_inf = qtcb_config->stat_info;
735
736 kfree(qtcb_config);
737 return retval;
738}
739
740#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
741static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
742 struct device_attribute *attr,\
743 char *buf) \
744{ \
745 struct fsf_statistics_info stat_info; \
746 int retval; \
747 \
748 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
749 if (retval) \
750 return retval; \
751 \
752 return sprintf(buf, _format, ## _arg); \
753} \
754static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
755
756ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
757 (unsigned long long) stat_info.input_req,
758 (unsigned long long) stat_info.output_req,
759 (unsigned long long) stat_info.control_req);
760
761ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
762 (unsigned long long) stat_info.input_mb,
763 (unsigned long long) stat_info.output_mb);
764
765ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
766 (unsigned long long) stat_info.seconds_act);
767
768static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
769 struct device_attribute *attr,
770 char *buf)
771{
772 struct Scsi_Host *scsi_host = class_to_shost(dev);
773 struct zfcp_qdio *qdio =
774 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
775 u64 util;
776
777 spin_lock_bh(&qdio->stat_lock);
778 util = qdio->req_q_util;
779 spin_unlock_bh(&qdio->stat_lock);
780
781 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
782 (unsigned long long)util);
783}
784static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
785
786struct device_attribute *zfcp_sysfs_shost_attrs[] = {
787 &dev_attr_utilization,
788 &dev_attr_requests,
789 &dev_attr_megabytes,
790 &dev_attr_seconds_active,
791 &dev_attr_queue_full,
792 NULL
793};
794
795static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show(
796 struct device *dev, struct device_attribute *attr, char *buf)
797{
798 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
799 struct zfcp_diag_header *diag_hdr;
800 struct fc_els_flogi *nsp;
801 ssize_t rc = -ENOLINK;
802 unsigned long flags;
803 unsigned int status;
804
805 if (!adapter)
806 return -ENODEV;
807
808 status = atomic_read(&adapter->status);
809 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
810 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
811 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED))
812 goto out;
813
814 diag_hdr = &adapter->diagnostics->config_data.header;
815
816 rc = zfcp_diag_update_buffer_limited(
817 adapter, diag_hdr, zfcp_diag_update_config_data_buffer);
818 if (rc != 0)
819 goto out;
820
821 spin_lock_irqsave(&diag_hdr->access_lock, flags);
822
823 nsp = (struct fc_els_flogi *)((unsigned long)
824 adapter->diagnostics->config_data
825 .data.nport_serv_param -
826 sizeof(u32));
827
828 rc = scnprintf(buf, 5 + 2, "%hu\n",
829 be16_to_cpu(nsp->fl_csp.sp_bb_cred));
830 spin_unlock_irqrestore(&diag_hdr->access_lock, flags);
831
832out:
833 zfcp_ccw_adapter_put(adapter);
834 return rc;
835}
836static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400,
837 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL);
838
839#define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \
840 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \
841 struct device *dev, struct device_attribute *attr, char *buf) \
842 { \
843 struct zfcp_adapter *const adapter = \
844 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \
845 struct zfcp_diag_header *diag_hdr; \
846 ssize_t rc = -ENOLINK; \
847 unsigned long flags; \
848 unsigned int status; \
849 \
850 if (!adapter) \
851 return -ENODEV; \
852 \
853 status = atomic_read(&adapter->status); \
854 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \
855 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \
856 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \
857 goto out; \
858 \
859 if (!zfcp_diag_support_sfp(adapter)) { \
860 rc = -EOPNOTSUPP; \
861 goto out; \
862 } \
863 \
864 diag_hdr = &adapter->diagnostics->port_data.header; \
865 \
866 rc = zfcp_diag_update_buffer_limited( \
867 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \
868 if (rc != 0) \
869 goto out; \
870 \
871 spin_lock_irqsave(&diag_hdr->access_lock, flags); \
872 rc = scnprintf( \
873 buf, (_prtsize) + 2, _prtfmt "\n", \
874 adapter->diagnostics->port_data.data._qtcb_member); \
875 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \
876 \
877 out: \
878 zfcp_ccw_adapter_put(adapter); \
879 return rc; \
880 } \
881 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \
882 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL)
883
884ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd");
885ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu");
886ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu");
887ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu");
888ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu");
889ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu");
890ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu");
891ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu");
892ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu");
893ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu");
894
895static struct attribute *zfcp_sysfs_diag_attrs[] = {
896 &dev_attr_adapter_diag_sfp_temperature.attr,
897 &dev_attr_adapter_diag_sfp_vcc.attr,
898 &dev_attr_adapter_diag_sfp_tx_bias.attr,
899 &dev_attr_adapter_diag_sfp_tx_power.attr,
900 &dev_attr_adapter_diag_sfp_rx_power.attr,
901 &dev_attr_adapter_diag_sfp_port_tx_type.attr,
902 &dev_attr_adapter_diag_sfp_optical_port.attr,
903 &dev_attr_adapter_diag_sfp_sfp_invalid.attr,
904 &dev_attr_adapter_diag_sfp_connector_type.attr,
905 &dev_attr_adapter_diag_sfp_fec_active.attr,
906 &dev_attr_adapter_diag_b2b_credit.attr,
907 NULL,
908};
909
910static const struct attribute_group zfcp_sysfs_diag_attr_group = {
911 .name = "diagnostics",
912 .attrs = zfcp_sysfs_diag_attrs,
913};
914
915const struct attribute_group *zfcp_sysfs_adapter_attr_groups[] = {
916 &zfcp_sysfs_adapter_attr_group,
917 &zfcp_sysfs_diag_attr_group,
918 NULL,
919};
920
