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