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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / s390 / scsi / zfcp_sysfs.c
blob8d9662e8b71795bd0c2597aedfcfeeb3048bada3
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * zfcp device driver
4 *
5 * sysfs attributes.
6 *
7 * Copyright IBM Corp. 2008, 2020
8 */
9
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) \
18 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
19 _show, _store)
20 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
21 static 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 } \
29 static 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) \
33 static 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 } \
39 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
40 zfcp_sysfs_##_feat##_##_name##_show, NULL);
41
42 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
43 static 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 } \
58 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
59 zfcp_sysfs_adapter_##_name##_show, NULL);
60
61 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
62 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
63 (unsigned long long) adapter->peer_wwnn);
64 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
65 (unsigned long long) adapter->peer_wwpn);
66 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
67 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
68 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
69 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
70 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
71 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
72
73 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
74 atomic_read(&port->status));
75 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
76 (atomic_read(&port->status) &
77 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
78 ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
79
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);
90
91 static 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
103 static 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 }
119 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
120 zfcp_sysfs_port_failed_show,
121 zfcp_sysfs_port_failed_store);
122
123 static 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
141 static 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 }
163 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
164 zfcp_sysfs_unit_failed_show,
165 zfcp_sysfs_unit_failed_store);
166
167 static 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
187 static 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");
205 out:
206 zfcp_ccw_adapter_put(adapter);
207 return retval ? retval : (ssize_t) count;
208 }
209 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
210 zfcp_sysfs_adapter_failed_show,
211 zfcp_sysfs_adapter_failed_store);
212
213 static 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 * If `scsi_host` is missing, we can't schedule `scan_work`, as it
226 * makes use of the corresponding fc_host object. But this state is
227 * only possible if xconfig/xport data has never completed yet,
228 * and we couldn't successfully scan for ports anyway.
229 */
230 if (adapter->scsi_host == NULL) {
231 retval = -ENODEV;
232 goto out;
233 }
234
235 /*
236 * Users wish is our command: immediately schedule and flush a
237 * worker to conduct a synchronous port scan, that is, neither
238 * a random delay nor a rate limit is applied here.
239 */
240 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
241 flush_delayed_work(&adapter->scan_work);
242 out:
243 zfcp_ccw_adapter_put(adapter);
244 return retval ? retval : (ssize_t) count;
245 }
246 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
247 zfcp_sysfs_port_rescan_store);
248
249 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
250
251 static 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
257 bool 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
263 static 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; /* zfcp_unit(s) under port */
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 /* alive scsi_device under port of interest */
284 goto unlock_host_lock;
285 }
286
287 /* port is about to be removed, so no more unit_add or slave_alloc */
288 zfcp_sysfs_port_set_removing(port);
289 in_use = false;
290
291 unlock_host_lock:
292 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
293 unlock_port_units_mutex:
294 mutex_unlock(&zfcp_sysfs_port_units_mutex);
295 return in_use;
296 }
297
298 static 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); /* undo zfcp_get_port_by_wwpn() */
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 put_device(&port->dev);
331
332 zfcp_erp_port_shutdown(port, 0, "syprs_1");
333 device_unregister(&port->dev);
334 out:
335 zfcp_ccw_adapter_put(adapter);
336 return retval ? retval : (ssize_t) count;
337 }
338 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
339 zfcp_sysfs_port_remove_store);
340
341 static ssize_t
342 zfcp_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 /* ceil(log(2^64 - 1) / log(10)) = 20 */
352 rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age);
353
354 zfcp_ccw_adapter_put(adapter);
355 return rc;
356 }
357
358 static ssize_t
359 zfcp_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;
377 out:
378 zfcp_ccw_adapter_put(adapter);
379 return rc;
380 }
381 static 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
385 static 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 * Adapter status COMMON_OPEN implies xconf data and xport data
398 * was done. Adapter FC Endpoint Security capability remains
399 * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link
400 * down).
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 }
417 static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO,
418 zfcp_sysfs_adapter_fc_security_show,
419 NULL);
420
421 static 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
438 struct attribute_group zfcp_sysfs_adapter_attrs = {
439 .attrs = zfcp_adapter_attrs,
440 };
441
442 static 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 }
459 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
460
461 static 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 }
476 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
477
478 static 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_COMMON_ERP_FAILED) ||
491 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
492 i = sprintf(buf, "unknown\n");
493 else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
494 i = sprintf(buf, "unsupported\n");
495 else {
496 i = zfcp_fsf_scnprint_fc_security(
497 buf, PAGE_SIZE - 1, port->connection_info,
498 ZFCP_FSF_PRINT_FMT_SINGLEITEM);
499 i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
500 }
501
502 return i;
503 }
504 static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO,
505 zfcp_sysfs_port_fc_security_show,
506 NULL);
507
508 static struct attribute *zfcp_port_attrs[] = {
509 &dev_attr_unit_add.attr,
510 &dev_attr_unit_remove.attr,
511 &dev_attr_port_failed.attr,
512 &dev_attr_port_in_recovery.attr,
513 &dev_attr_port_status.attr,
514 &dev_attr_port_access_denied.attr,
515 &dev_attr_port_fc_security.attr,
516 NULL
517 };
518 static struct attribute_group zfcp_port_attr_group = {
519 .attrs = zfcp_port_attrs,
520 };
521 const struct attribute_group *zfcp_port_attr_groups[] = {
522 &zfcp_port_attr_group,
523 NULL,
524 };
525
526 static struct attribute *zfcp_unit_attrs[] = {
527 &dev_attr_unit_failed.attr,
528 &dev_attr_unit_in_recovery.attr,
529 &dev_attr_unit_status.attr,
530 &dev_attr_unit_access_denied.attr,
531 &dev_attr_unit_access_shared.attr,
532 &dev_attr_unit_access_readonly.attr,
533 NULL
534 };
535 static struct attribute_group zfcp_unit_attr_group = {
536 .attrs = zfcp_unit_attrs,
537 };
538 const struct attribute_group *zfcp_unit_attr_groups[] = {
539 &zfcp_unit_attr_group,
540 NULL,
541 };
542
543 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
544 static ssize_t \
545 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
546 struct device_attribute *attr, \
547 char *buf) { \
548 struct scsi_device *sdev = to_scsi_device(dev); \
549 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
550 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
551 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
552 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
553 \
554 spin_lock_bh(&lat->lock); \
555 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
556 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
557 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
558 csum = lat->_name.channel.sum * adapter->timer_ticks; \
559 cmin = lat->_name.channel.min * adapter->timer_ticks; \
560 cmax = lat->_name.channel.max * adapter->timer_ticks; \
561 cc = lat->_name.counter; \
562 spin_unlock_bh(&lat->lock); \
563 \
564 do_div(fsum, 1000); \
565 do_div(fmin, 1000); \
566 do_div(fmax, 1000); \
567 do_div(csum, 1000); \
568 do_div(cmin, 1000); \
569 do_div(cmax, 1000); \
570 \
571 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
572 fmin, fmax, fsum, cmin, cmax, csum, cc); \
573 } \
574 static ssize_t \
575 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
576 struct device_attribute *attr, \
577 const char *buf, size_t count) \
578 { \
579 struct scsi_device *sdev = to_scsi_device(dev); \
580 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
581 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
582 unsigned long flags; \
583 \
584 spin_lock_irqsave(&lat->lock, flags); \
585 lat->_name.fabric.sum = 0; \
586 lat->_name.fabric.min = 0xFFFFFFFF; \
587 lat->_name.fabric.max = 0; \
588 lat->_name.channel.sum = 0; \
589 lat->_name.channel.min = 0xFFFFFFFF; \
590 lat->_name.channel.max = 0; \
591 lat->_name.counter = 0; \
592 spin_unlock_irqrestore(&lat->lock, flags); \
593 \
594 return (ssize_t) count; \
595 } \
596 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
597 zfcp_sysfs_unit_##_name##_latency_show, \
598 zfcp_sysfs_unit_##_name##_latency_store);
599
600 ZFCP_DEFINE_LATENCY_ATTR(read);
601 ZFCP_DEFINE_LATENCY_ATTR(write);
602 ZFCP_DEFINE_LATENCY_ATTR(cmd);
603
604 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
605 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
606 struct device_attribute *attr,\
607 char *buf) \
608 { \
609 struct scsi_device *sdev = to_scsi_device(dev); \
610 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
611 \
612 return sprintf(buf, _format, _value); \
613 } \
614 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
615
616 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
617 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
618 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
619 (unsigned long long) zfcp_sdev->port->wwpn);
620
621 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
622 struct device_attribute *attr,
623 char *buf)
624 {
625 struct scsi_device *sdev = to_scsi_device(dev);
626
627 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
628 }
629 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
630
631 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
632 (atomic_read(&zfcp_sdev->status) &
633 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
634
635 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
636 struct device_attribute *attr,
637 char *buf)
638 {
639 struct scsi_device *sdev = to_scsi_device(dev);
640 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
641 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
642
643 return sprintf(buf, "%d\n", failed);
644 }
645
646 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
647 struct device_attribute *attr,
648 const char *buf, size_t count)
649 {
650 struct scsi_device *sdev = to_scsi_device(dev);
651 unsigned long val;
652
653 if (kstrtoul(buf, 0, &val) || val != 0)
654 return -EINVAL;
655
656 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
657 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
658 "syufai3");
659 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
660
661 return count;
662 }
663 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
664 zfcp_sysfs_scsi_zfcp_failed_show,
665 zfcp_sysfs_scsi_zfcp_failed_store);
666
667 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
668 (atomic_read(&zfcp_sdev->status) &
669 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
670
671 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
672 atomic_read(&zfcp_sdev->status));
673
674 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
675 &dev_attr_fcp_lun,
676 &dev_attr_wwpn,
677 &dev_attr_hba_id,
678 &dev_attr_read_latency,
679 &dev_attr_write_latency,
680 &dev_attr_cmd_latency,
681 &dev_attr_zfcp_access_denied,
682 &dev_attr_zfcp_failed,
683 &dev_attr_zfcp_in_recovery,
684 &dev_attr_zfcp_status,
685 NULL
686 };
687
688 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
689 struct device_attribute *attr,
690 char *buf)
691 {
692 struct Scsi_Host *scsi_host = dev_to_shost(dev);
693 struct fsf_qtcb_bottom_port *qtcb_port;
694 struct zfcp_adapter *adapter;
695 int retval;
696
697 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
698 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
699 return -EOPNOTSUPP;
700
701 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
702 if (!qtcb_port)
703 return -ENOMEM;
704
705 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
706 if (retval == 0 || retval == -EAGAIN)
707 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
708 qtcb_port->cb_util, qtcb_port->a_util);
709 kfree(qtcb_port);
710 return retval;
711 }
712 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
713
714 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
715 struct fsf_statistics_info *stat_inf)
716 {
717 struct Scsi_Host *scsi_host = dev_to_shost(dev);
718 struct fsf_qtcb_bottom_config *qtcb_config;
719 struct zfcp_adapter *adapter;
720 int retval;
721
722 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
723 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
724 return -EOPNOTSUPP;
725
726 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
727 GFP_KERNEL);
728 if (!qtcb_config)
729 return -ENOMEM;
730
731 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
732 if (retval == 0 || retval == -EAGAIN)
733 *stat_inf = qtcb_config->stat_info;
734
735 kfree(qtcb_config);
736 return retval;
737 }
738
739 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
740 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
741 struct device_attribute *attr,\
742 char *buf) \
743 { \
744 struct fsf_statistics_info stat_info; \
745 int retval; \
746 \
747 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
748 if (retval) \
749 return retval; \
750 \
751 return sprintf(buf, _format, ## _arg); \
752 } \
753 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
754
755 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
756 (unsigned long long) stat_info.input_req,
757 (unsigned long long) stat_info.output_req,
758 (unsigned long long) stat_info.control_req);
759
760 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
761 (unsigned long long) stat_info.input_mb,
762 (unsigned long long) stat_info.output_mb);
763
764 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
765 (unsigned long long) stat_info.seconds_act);
766
767 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
768 struct device_attribute *attr,
769 char *buf)
770 {
771 struct Scsi_Host *scsi_host = class_to_shost(dev);
772 struct zfcp_qdio *qdio =
773 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
774 u64 util;
775
776 spin_lock_bh(&qdio->stat_lock);
777 util = qdio->req_q_util;
778 spin_unlock_bh(&qdio->stat_lock);
779
780 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
781 (unsigned long long)util);
782 }
783 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
784
785 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
786 &dev_attr_utilization,
787 &dev_attr_requests,
788 &dev_attr_megabytes,
789 &dev_attr_seconds_active,
790 &dev_attr_queue_full,
791 NULL
792 };
793
794 static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show(
795 struct device *dev, struct device_attribute *attr, char *buf)
796 {
797 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
798 struct zfcp_diag_header *diag_hdr;
799 struct fc_els_flogi *nsp;
800 ssize_t rc = -ENOLINK;
801 unsigned long flags;
802 unsigned int status;
803
804 if (!adapter)
805 return -ENODEV;
806
807 status = atomic_read(&adapter->status);
808 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
809 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
810 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED))
811 goto out;
812
813 diag_hdr = &adapter->diagnostics->config_data.header;
814
815 rc = zfcp_diag_update_buffer_limited(
816 adapter, diag_hdr, zfcp_diag_update_config_data_buffer);
817 if (rc != 0)
818 goto out;
819
820 spin_lock_irqsave(&diag_hdr->access_lock, flags);
821 /* nport_serv_param doesn't contain the ELS_Command code */
822 nsp = (struct fc_els_flogi *)((unsigned long)
823 adapter->diagnostics->config_data
824 .data.nport_serv_param -
825 sizeof(u32));
826
827 rc = scnprintf(buf, 5 + 2, "%hu\n",
828 be16_to_cpu(nsp->fl_csp.sp_bb_cred));
829 spin_unlock_irqrestore(&diag_hdr->access_lock, flags);
830
831 out:
832 zfcp_ccw_adapter_put(adapter);
833 return rc;
834 }
835 static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400,
836 zfcp_sysfs_adapter_diag_b2b_credit_show, NULL);
837
838 #define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \
839 static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \
840 struct device *dev, struct device_attribute *attr, char *buf) \
841 { \
842 struct zfcp_adapter *const adapter = \
843 zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \
844 struct zfcp_diag_header *diag_hdr; \
845 ssize_t rc = -ENOLINK; \
846 unsigned long flags; \
847 unsigned int status; \
848 \
849 if (!adapter) \
850 return -ENODEV; \
851 \
852 status = atomic_read(&adapter->status); \
853 if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \
854 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \
855 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \
856 goto out; \
857 \
858 if (!zfcp_diag_support_sfp(adapter)) { \
859 rc = -EOPNOTSUPP; \
860 goto out; \
861 } \
862 \
863 diag_hdr = &adapter->diagnostics->port_data.header; \
864 \
865 rc = zfcp_diag_update_buffer_limited( \
866 adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \
867 if (rc != 0) \
868 goto out; \
869 \
870 spin_lock_irqsave(&diag_hdr->access_lock, flags); \
871 rc = scnprintf( \
872 buf, (_prtsize) + 2, _prtfmt "\n", \
873 adapter->diagnostics->port_data.data._qtcb_member); \
874 spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \
875 \
876 out: \
877 zfcp_ccw_adapter_put(adapter); \
878 return rc; \
879 } \
880 static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \
881 zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL)
882
883 ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd");
884 ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu");
885 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu");
886 ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu");
887 ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu");
888 ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu");
889 ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu");
890 ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu");
891 ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu");
892 ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu");
893
894 static struct attribute *zfcp_sysfs_diag_attrs[] = {
895 &dev_attr_adapter_diag_sfp_temperature.attr,
896 &dev_attr_adapter_diag_sfp_vcc.attr,
897 &dev_attr_adapter_diag_sfp_tx_bias.attr,
898 &dev_attr_adapter_diag_sfp_tx_power.attr,
899 &dev_attr_adapter_diag_sfp_rx_power.attr,
900 &dev_attr_adapter_diag_sfp_port_tx_type.attr,
901 &dev_attr_adapter_diag_sfp_optical_port.attr,
902 &dev_attr_adapter_diag_sfp_sfp_invalid.attr,
903 &dev_attr_adapter_diag_sfp_connector_type.attr,
904 &dev_attr_adapter_diag_sfp_fec_active.attr,
905 &dev_attr_adapter_diag_b2b_credit.attr,
906 NULL,
907 };
908
909 const struct attribute_group zfcp_sysfs_diag_attr_group = {
910 .name = "diagnostics",
911 .attrs = zfcp_sysfs_diag_attrs,
912 };
Linux with added FPC-III support