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