1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * zfcp device driver
4 *
5 * sysfs attributes.
6 *
7 * Copyright IBM Corp. 2008, 2010
8 */
9
10 #define KMSG_COMPONENT "zfcp"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/slab.h>
14 #include "zfcp_ext.h"
15
16 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
17 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
18 _show, _store)
19 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
20 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
21 struct device_attribute *at,\
22 char *buf) \
23 { \
24 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
25 \
26 return sprintf(buf, _format, _value); \
27 } \
28 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
29 zfcp_sysfs_##_feat##_##_name##_show, NULL);
30
31 #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
32 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
33 struct device_attribute *at,\
34 char *buf) \
35 { \
36 return sprintf(buf, _format, _value); \
37 } \
38 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
39 zfcp_sysfs_##_feat##_##_name##_show, NULL);
40
41 #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
42 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
43 struct device_attribute *at,\
44 char *buf) \
45 { \
46 struct ccw_device *cdev = to_ccwdev(dev); \
47 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
48 int i; \
49 \
50 if (!adapter) \
51 return -ENODEV; \
52 \
53 i = sprintf(buf, _format, _value); \
54 zfcp_ccw_adapter_put(adapter); \
55 return i; \
56 } \
57 static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
58 zfcp_sysfs_adapter_##_name##_show, NULL);
59
60 ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
61 ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
62 (unsigned long long) adapter->peer_wwnn);
63 ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
64 (unsigned long long) adapter->peer_wwpn);
65 ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
66 ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
67 ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
68 ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
69 ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
70 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
71
72 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
73 atomic_read(&port->status));
74 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
75 (atomic_read(&port->status) &
76 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
77 ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
78
79 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
80 zfcp_unit_sdev_status(unit));
81 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
82 (zfcp_unit_sdev_status(unit) &
83 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
84 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
85 (zfcp_unit_sdev_status(unit) &
86 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
87 ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
88 ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
89
zfcp_sysfs_port_failed_show(struct device * dev,struct device_attribute * attr,char * buf)90 static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
91 struct device_attribute *attr,
92 char *buf)
93 {
94 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
95
96 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
97 return sprintf(buf, "1\n");
98
99 return sprintf(buf, "0\n");
100 }
101
zfcp_sysfs_port_failed_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)102 static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
103 struct device_attribute *attr,
104 const char *buf, size_t count)
105 {
106 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
107 unsigned long val;
108
109 if (kstrtoul(buf, 0, &val) || val != 0)
110 return -EINVAL;
111
112 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
113 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
114 zfcp_erp_wait(port->adapter);
115
116 return count;
117 }
118 static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
119 zfcp_sysfs_port_failed_show,
120 zfcp_sysfs_port_failed_store);
121
zfcp_sysfs_unit_failed_show(struct device * dev,struct device_attribute * attr,char * buf)122 static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
123 struct device_attribute *attr,
124 char *buf)
125 {
126 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
127 struct scsi_device *sdev;
128 unsigned int status, failed = 1;
129
130 sdev = zfcp_unit_sdev(unit);
131 if (sdev) {
132 status = atomic_read(&sdev_to_zfcp(sdev)->status);
133 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
134 scsi_device_put(sdev);
135 }
136
137 return sprintf(buf, "%d\n", failed);
138 }
139
zfcp_sysfs_unit_failed_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)140 static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
141 struct device_attribute *attr,
142 const char *buf, size_t count)
143 {
144 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
145 unsigned long val;
146 struct scsi_device *sdev;
147
148 if (kstrtoul(buf, 0, &val) || val != 0)
149 return -EINVAL;
150
151 sdev = zfcp_unit_sdev(unit);
152 if (sdev) {
153 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
154 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
155 "syufai2");
156 zfcp_erp_wait(unit->port->adapter);
157 } else
158 zfcp_unit_scsi_scan(unit);
159
160 return count;
161 }
162 static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
163 zfcp_sysfs_unit_failed_show,
164 zfcp_sysfs_unit_failed_store);
165
zfcp_sysfs_adapter_failed_show(struct device * dev,struct device_attribute * attr,char * buf)166 static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
167 struct device_attribute *attr,
168 char *buf)
169 {
170 struct ccw_device *cdev = to_ccwdev(dev);
171 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
172 int i;
173
174 if (!adapter)
175 return -ENODEV;
176
177 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
178 i = sprintf(buf, "1\n");
179 else
180 i = sprintf(buf, "0\n");
181
182 zfcp_ccw_adapter_put(adapter);
183 return i;
184 }
185
zfcp_sysfs_adapter_failed_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)186 static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
187 struct device_attribute *attr,
188 const char *buf, size_t count)
189 {
190 struct ccw_device *cdev = to_ccwdev(dev);
191 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
192 unsigned long val;
193 int retval = 0;
194
195 if (!adapter)
196 return -ENODEV;
197
198 if (kstrtoul(buf, 0, &val) || val != 0) {
199 retval = -EINVAL;
200 goto out;
201 }
202
203 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
204 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
205 "syafai2");
206 zfcp_erp_wait(adapter);
207 out:
208 zfcp_ccw_adapter_put(adapter);
209 return retval ? retval : (ssize_t) count;
210 }
211 static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
212 zfcp_sysfs_adapter_failed_show,
213 zfcp_sysfs_adapter_failed_store);
214
zfcp_sysfs_port_rescan_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)215 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
216 struct device_attribute *attr,
217 const char *buf, size_t count)
218 {
219 struct ccw_device *cdev = to_ccwdev(dev);
220 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
221
222 if (!adapter)
223 return -ENODEV;
224
225 /*
226 * Users wish is our command: immediately schedule and flush a
227 * worker to conduct a synchronous port scan, that is, neither
228 * a random delay nor a rate limit is applied here.
229 */
230 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
231 flush_delayed_work(&adapter->scan_work);
232 zfcp_ccw_adapter_put(adapter);
233
234 return (ssize_t) count;
235 }
236 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
237 zfcp_sysfs_port_rescan_store);
238
239 DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
240
zfcp_sysfs_port_set_removing(struct zfcp_port * const port)241 static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port)
242 {
243 lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
244 atomic_set(&port->units, -1);
245 }
246
zfcp_sysfs_port_is_removing(const struct zfcp_port * const port)247 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port)
248 {
249 lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
250 return atomic_read(&port->units) == -1;
251 }
252
zfcp_sysfs_port_in_use(struct zfcp_port * const port)253 static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port)
254 {
255 struct zfcp_adapter *const adapter = port->adapter;
256 unsigned long flags;
257 struct scsi_device *sdev;
258 bool in_use = true;
259
260 mutex_lock(&zfcp_sysfs_port_units_mutex);
261 if (atomic_read(&port->units) > 0)
262 goto unlock_port_units_mutex; /* zfcp_unit(s) under port */
263
264 spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
265 __shost_for_each_device(sdev, adapter->scsi_host) {
266 const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
267
268 if (sdev->sdev_state == SDEV_DEL ||
269 sdev->sdev_state == SDEV_CANCEL)
270 continue;
271 if (zsdev->port != port)
272 continue;
273 /* alive scsi_device under port of interest */
274 goto unlock_host_lock;
275 }
276
277 /* port is about to be removed, so no more unit_add or slave_alloc */
278 zfcp_sysfs_port_set_removing(port);
279 in_use = false;
280
281 unlock_host_lock:
282 spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
283 unlock_port_units_mutex:
284 mutex_unlock(&zfcp_sysfs_port_units_mutex);
285 return in_use;
286 }
287
zfcp_sysfs_port_remove_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)288 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
289 struct device_attribute *attr,
290 const char *buf, size_t count)
291 {
292 struct ccw_device *cdev = to_ccwdev(dev);
293 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
294 struct zfcp_port *port;
295 u64 wwpn;
296 int retval = -EINVAL;
297
298 if (!adapter)
299 return -ENODEV;
300
301 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
302 goto out;
303
304 port = zfcp_get_port_by_wwpn(adapter, wwpn);
305 if (!port)
306 goto out;
307 else
308 retval = 0;
309
310 if (zfcp_sysfs_port_in_use(port)) {
311 retval = -EBUSY;
312 put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
313 goto out;
314 }
315
316 write_lock_irq(&adapter->port_list_lock);
317 list_del(&port->list);
318 write_unlock_irq(&adapter->port_list_lock);
319
320 put_device(&port->dev);
321
322 zfcp_erp_port_shutdown(port, 0, "syprs_1");
323 device_unregister(&port->dev);
324 out:
325 zfcp_ccw_adapter_put(adapter);
326 return retval ? retval : (ssize_t) count;
327 }
328 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
329 zfcp_sysfs_port_remove_store);
330
331 static struct attribute *zfcp_adapter_attrs[] = {
332 &dev_attr_adapter_failed.attr,
333 &dev_attr_adapter_in_recovery.attr,
334 &dev_attr_adapter_port_remove.attr,
335 &dev_attr_adapter_port_rescan.attr,
336 &dev_attr_adapter_peer_wwnn.attr,
337 &dev_attr_adapter_peer_wwpn.attr,
338 &dev_attr_adapter_peer_d_id.attr,
339 &dev_attr_adapter_card_version.attr,
340 &dev_attr_adapter_lic_version.attr,
341 &dev_attr_adapter_status.attr,
342 &dev_attr_adapter_hardware_version.attr,
343 NULL
344 };
345
346 struct attribute_group zfcp_sysfs_adapter_attrs = {
347 .attrs = zfcp_adapter_attrs,
348 };
349
zfcp_sysfs_unit_add_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)350 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
351 struct device_attribute *attr,
352 const char *buf, size_t count)
353 {
354 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
355 u64 fcp_lun;
356 int retval;
357
358 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
359 return -EINVAL;
360
361 retval = zfcp_unit_add(port, fcp_lun);
362 if (retval)
363 return retval;
364
365 return count;
366 }
367 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
368
zfcp_sysfs_unit_remove_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)369 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
370 struct device_attribute *attr,
371 const char *buf, size_t count)
372 {
373 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
374 u64 fcp_lun;
375
376 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
377 return -EINVAL;
378
379 if (zfcp_unit_remove(port, fcp_lun))
380 return -EINVAL;
381
382 return count;
383 }
384 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
385
386 static struct attribute *zfcp_port_attrs[] = {
387 &dev_attr_unit_add.attr,
388 &dev_attr_unit_remove.attr,
389 &dev_attr_port_failed.attr,
390 &dev_attr_port_in_recovery.attr,
391 &dev_attr_port_status.attr,
392 &dev_attr_port_access_denied.attr,
393 NULL
394 };
395 static struct attribute_group zfcp_port_attr_group = {
396 .attrs = zfcp_port_attrs,
397 };
398 const struct attribute_group *zfcp_port_attr_groups[] = {
399 &zfcp_port_attr_group,
400 NULL,
401 };
402
403 static struct attribute *zfcp_unit_attrs[] = {
404 &dev_attr_unit_failed.attr,
405 &dev_attr_unit_in_recovery.attr,
406 &dev_attr_unit_status.attr,
407 &dev_attr_unit_access_denied.attr,
408 &dev_attr_unit_access_shared.attr,
409 &dev_attr_unit_access_readonly.attr,
410 NULL
411 };
412 static struct attribute_group zfcp_unit_attr_group = {
413 .attrs = zfcp_unit_attrs,
414 };
415 const struct attribute_group *zfcp_unit_attr_groups[] = {
416 &zfcp_unit_attr_group,
417 NULL,
418 };
419
420 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
421 static ssize_t \
422 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
423 struct device_attribute *attr, \
424 char *buf) { \
425 struct scsi_device *sdev = to_scsi_device(dev); \
426 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
427 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
428 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
429 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
430 \
431 spin_lock_bh(&lat->lock); \
432 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
433 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
434 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
435 csum = lat->_name.channel.sum * adapter->timer_ticks; \
436 cmin = lat->_name.channel.min * adapter->timer_ticks; \
437 cmax = lat->_name.channel.max * adapter->timer_ticks; \
438 cc = lat->_name.counter; \
439 spin_unlock_bh(&lat->lock); \
440 \
441 do_div(fsum, 1000); \
442 do_div(fmin, 1000); \
443 do_div(fmax, 1000); \
444 do_div(csum, 1000); \
445 do_div(cmin, 1000); \
446 do_div(cmax, 1000); \
447 \
448 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
449 fmin, fmax, fsum, cmin, cmax, csum, cc); \
450 } \
451 static ssize_t \
452 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
453 struct device_attribute *attr, \
454 const char *buf, size_t count) \
455 { \
456 struct scsi_device *sdev = to_scsi_device(dev); \
457 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
458 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
459 unsigned long flags; \
460 \
461 spin_lock_irqsave(&lat->lock, flags); \
462 lat->_name.fabric.sum = 0; \
463 lat->_name.fabric.min = 0xFFFFFFFF; \
464 lat->_name.fabric.max = 0; \
465 lat->_name.channel.sum = 0; \
466 lat->_name.channel.min = 0xFFFFFFFF; \
467 lat->_name.channel.max = 0; \
468 lat->_name.counter = 0; \
469 spin_unlock_irqrestore(&lat->lock, flags); \
470 \
471 return (ssize_t) count; \
472 } \
473 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
474 zfcp_sysfs_unit_##_name##_latency_show, \
475 zfcp_sysfs_unit_##_name##_latency_store);
476
477 ZFCP_DEFINE_LATENCY_ATTR(read);
478 ZFCP_DEFINE_LATENCY_ATTR(write);
479 ZFCP_DEFINE_LATENCY_ATTR(cmd);
480
481 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
482 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
483 struct device_attribute *attr,\
484 char *buf) \
485 { \
486 struct scsi_device *sdev = to_scsi_device(dev); \
487 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
488 \
489 return sprintf(buf, _format, _value); \
490 } \
491 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
492
493 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
494 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
495 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
496 (unsigned long long) zfcp_sdev->port->wwpn);
497
zfcp_sysfs_scsi_fcp_lun_show(struct device * dev,struct device_attribute * attr,char * buf)498 static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
499 struct device_attribute *attr,
500 char *buf)
501 {
502 struct scsi_device *sdev = to_scsi_device(dev);
503
504 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
505 }
506 static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
507
508 ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
509 (atomic_read(&zfcp_sdev->status) &
510 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
511
zfcp_sysfs_scsi_zfcp_failed_show(struct device * dev,struct device_attribute * attr,char * buf)512 static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
513 struct device_attribute *attr,
514 char *buf)
515 {
516 struct scsi_device *sdev = to_scsi_device(dev);
517 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
518 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
519
520 return sprintf(buf, "%d\n", failed);
521 }
522
zfcp_sysfs_scsi_zfcp_failed_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)523 static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
524 struct device_attribute *attr,
525 const char *buf, size_t count)
526 {
527 struct scsi_device *sdev = to_scsi_device(dev);
528 unsigned long val;
529
530 if (kstrtoul(buf, 0, &val) || val != 0)
531 return -EINVAL;
532
533 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
534 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
535 "syufai3");
536 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
537
538 return count;
539 }
540 static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
541 zfcp_sysfs_scsi_zfcp_failed_show,
542 zfcp_sysfs_scsi_zfcp_failed_store);
543
544 ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
545 (atomic_read(&zfcp_sdev->status) &
546 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
547
548 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
549 atomic_read(&zfcp_sdev->status));
550
551 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
552 &dev_attr_fcp_lun,
553 &dev_attr_wwpn,
554 &dev_attr_hba_id,
555 &dev_attr_read_latency,
556 &dev_attr_write_latency,
557 &dev_attr_cmd_latency,
558 &dev_attr_zfcp_access_denied,
559 &dev_attr_zfcp_failed,
560 &dev_attr_zfcp_in_recovery,
561 &dev_attr_zfcp_status,
562 NULL
563 };
564
zfcp_sysfs_adapter_util_show(struct device * dev,struct device_attribute * attr,char * buf)565 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
566 struct device_attribute *attr,
567 char *buf)
568 {
569 struct Scsi_Host *scsi_host = dev_to_shost(dev);
570 struct fsf_qtcb_bottom_port *qtcb_port;
571 struct zfcp_adapter *adapter;
572 int retval;
573
574 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
575 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
576 return -EOPNOTSUPP;
577
578 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
579 if (!qtcb_port)
580 return -ENOMEM;
581
582 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
583 if (!retval)
584 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
585 qtcb_port->cb_util, qtcb_port->a_util);
586 kfree(qtcb_port);
587 return retval;
588 }
589 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
590
zfcp_sysfs_adapter_ex_config(struct device * dev,struct fsf_statistics_info * stat_inf)591 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
592 struct fsf_statistics_info *stat_inf)
593 {
594 struct Scsi_Host *scsi_host = dev_to_shost(dev);
595 struct fsf_qtcb_bottom_config *qtcb_config;
596 struct zfcp_adapter *adapter;
597 int retval;
598
599 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
600 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
601 return -EOPNOTSUPP;
602
603 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
604 GFP_KERNEL);
605 if (!qtcb_config)
606 return -ENOMEM;
607
608 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
609 if (!retval)
610 *stat_inf = qtcb_config->stat_info;
611
612 kfree(qtcb_config);
613 return retval;
614 }
615
616 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
617 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
618 struct device_attribute *attr,\
619 char *buf) \
620 { \
621 struct fsf_statistics_info stat_info; \
622 int retval; \
623 \
624 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
625 if (retval) \
626 return retval; \
627 \
628 return sprintf(buf, _format, ## _arg); \
629 } \
630 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
631
632 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
633 (unsigned long long) stat_info.input_req,
634 (unsigned long long) stat_info.output_req,
635 (unsigned long long) stat_info.control_req);
636
637 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
638 (unsigned long long) stat_info.input_mb,
639 (unsigned long long) stat_info.output_mb);
640
641 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
642 (unsigned long long) stat_info.seconds_act);
643
zfcp_sysfs_adapter_q_full_show(struct device * dev,struct device_attribute * attr,char * buf)644 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
645 struct device_attribute *attr,
646 char *buf)
647 {
648 struct Scsi_Host *scsi_host = class_to_shost(dev);
649 struct zfcp_qdio *qdio =
650 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
651 u64 util;
652
653 spin_lock_bh(&qdio->stat_lock);
654 util = qdio->req_q_util;
655 spin_unlock_bh(&qdio->stat_lock);
656
657 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
658 (unsigned long long)util);
659 }
660 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
661
662 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
663 &dev_attr_utilization,
664 &dev_attr_requests,
665 &dev_attr_megabytes,
666 &dev_attr_seconds_active,
667 &dev_attr_queue_full,
668 NULL
669 };
670