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path: root/drivers/s390/scsi/zfcp_sysfs.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_sysfs.c')
-rw-r--r--drivers/s390/scsi/zfcp_sysfs.c496
1 files changed, 496 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c
new file mode 100644
index 000000000000..2e85c6c49e7d
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_sysfs.c
@@ -0,0 +1,496 @@
1/*
2 * zfcp device driver
3 *
4 * sysfs attributes.
5 *
6 * Copyright IBM Corporation 2008
7 */
8
9#include "zfcp_ext.h"
10
11#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
12struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
13 _show, _store)
14#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
15static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
16 struct device_attribute *at,\
17 char *buf) \
18{ \
19 struct _feat_def *_feat = dev_get_drvdata(dev); \
20 \
21 return sprintf(buf, _format, _value); \
22} \
23static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
24 zfcp_sysfs_##_feat##_##_name##_show, NULL);
25
26ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
27 atomic_read(&adapter->status));
28ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
29 adapter->peer_wwnn);
30ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
31 adapter->peer_wwpn);
32ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
33 adapter->peer_d_id);
34ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
35 adapter->hydra_version);
36ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
37 adapter->fsf_lic_version);
38ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
39 adapter->hardware_version);
40ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n",
41 (atomic_read(&adapter->status) &
42 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
43
44ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
45 atomic_read(&port->status));
46ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
47 (atomic_read(&port->status) &
48 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
49ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
50 (atomic_read(&port->status) &
51 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
52
53ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
54 atomic_read(&unit->status));
55ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
56 (atomic_read(&unit->status) &
57 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
58ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
59 (atomic_read(&unit->status) &
60 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
61ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
62 (atomic_read(&unit->status) &
63 ZFCP_STATUS_UNIT_SHARED) != 0);
64ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
65 (atomic_read(&unit->status) &
66 ZFCP_STATUS_UNIT_READONLY) != 0);
67
68#define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \
69static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \
70 struct device_attribute *attr, \
71 char *buf) \
72{ \
73 struct _feat_def *_feat = dev_get_drvdata(dev); \
74 \
75 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
76 return sprintf(buf, "1\n"); \
77 else \
78 return sprintf(buf, "0\n"); \
79} \
80static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
81 struct device_attribute *attr,\
82 const char *buf, size_t count)\
83{ \
84 struct _feat_def *_feat = dev_get_drvdata(dev); \
85 unsigned long val; \
86 int retval = 0; \
87 \
88 down(&zfcp_data.config_sema); \
89 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \
90 retval = -EBUSY; \
91 goto out; \
92 } \
93 \
94 if (strict_strtoul(buf, 0, &val) || val != 0) { \
95 retval = -EINVAL; \
96 goto out; \
97 } \
98 \
99 zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \
100 ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
101 zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \
102 _reopen_id, NULL); \
103 zfcp_erp_wait(_adapter); \
104out: \
105 up(&zfcp_data.config_sema); \
106 return retval ? retval : (ssize_t) count; \
107} \
108static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \
109 zfcp_sysfs_##_feat##_failed_show, \
110 zfcp_sysfs_##_feat##_failed_store);
111
112ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, 44, 93);
113ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96);
114ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97);
115
116static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
117 struct device_attribute *attr,
118 const char *buf, size_t count)
119{
120 struct zfcp_adapter *adapter = dev_get_drvdata(dev);
121 int ret;
122
123 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE)
124 return -EBUSY;
125
126 ret = zfcp_scan_ports(adapter);
127 return ret ? ret : (ssize_t) count;
128}
129static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
130 zfcp_sysfs_port_rescan_store);
131
132static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
133 struct device_attribute *attr,
134 const char *buf, size_t count)
135{
136 struct zfcp_adapter *adapter = dev_get_drvdata(dev);
137 struct zfcp_port *port;
138 wwn_t wwpn;
139 int retval = 0;
140
141 down(&zfcp_data.config_sema);
142 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
143 retval = -EBUSY;
144 goto out;
145 }
146
147 if (strict_strtoull(buf, 0, &wwpn)) {
148 retval = -EINVAL;
149 goto out;
150 }
151
152 write_lock_irq(&zfcp_data.config_lock);
153 port = zfcp_get_port_by_wwpn(adapter, wwpn);
154 if (port && (atomic_read(&port->refcount) == 0)) {
155 zfcp_port_get(port);
156 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
157 list_move(&port->list, &adapter->port_remove_lh);
158 } else
159 port = NULL;
160 write_unlock_irq(&zfcp_data.config_lock);
161
162 if (!port) {
163 retval = -ENXIO;
164 goto out;
165 }
166
167 zfcp_erp_port_shutdown(port, 0, 92, NULL);
168 zfcp_erp_wait(adapter);
169 zfcp_port_put(port);
170 zfcp_port_dequeue(port);
171 out:
172 up(&zfcp_data.config_sema);
173 return retval ? retval : (ssize_t) count;
174}
175static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
176 zfcp_sysfs_port_remove_store);
177
178static struct attribute *zfcp_adapter_attrs[] = {
179 &dev_attr_adapter_failed.attr,
180 &dev_attr_adapter_in_recovery.attr,
181 &dev_attr_adapter_port_remove.attr,
182 &dev_attr_adapter_port_rescan.attr,
183 &dev_attr_adapter_peer_wwnn.attr,
184 &dev_attr_adapter_peer_wwpn.attr,
185 &dev_attr_adapter_peer_d_id.attr,
186 &dev_attr_adapter_card_version.attr,
187 &dev_attr_adapter_lic_version.attr,
188 &dev_attr_adapter_status.attr,
189 &dev_attr_adapter_hardware_version.attr,
190 NULL
191};
192
193struct attribute_group zfcp_sysfs_adapter_attrs = {
194 .attrs = zfcp_adapter_attrs,
195};
196
197static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
198 struct device_attribute *attr,
199 const char *buf, size_t count)
200{
201 struct zfcp_port *port = dev_get_drvdata(dev);
202 struct zfcp_unit *unit;
203 fcp_lun_t fcp_lun;
204 int retval = -EINVAL;
205
206 down(&zfcp_data.config_sema);
207 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
208 retval = -EBUSY;
209 goto out;
210 }
211
212 if (strict_strtoull(buf, 0, &fcp_lun))
213 goto out;
214
215 unit = zfcp_unit_enqueue(port, fcp_lun);
216 if (IS_ERR(unit))
217 goto out;
218
219 retval = 0;
220
221 zfcp_erp_unit_reopen(unit, 0, 94, NULL);
222 zfcp_erp_wait(unit->port->adapter);
223 zfcp_unit_put(unit);
224out:
225 up(&zfcp_data.config_sema);
226 return retval ? retval : (ssize_t) count;
227}
228static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
229
230static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
231 struct device_attribute *attr,
232 const char *buf, size_t count)
233{
234 struct zfcp_port *port = dev_get_drvdata(dev);
235 struct zfcp_unit *unit;
236 fcp_lun_t fcp_lun;
237 int retval = 0;
238
239 down(&zfcp_data.config_sema);
240 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
241 retval = -EBUSY;
242 goto out;
243 }
244
245 if (strict_strtoull(buf, 0, &fcp_lun)) {
246 retval = -EINVAL;
247 goto out;
248 }
249
250 write_lock_irq(&zfcp_data.config_lock);
251 unit = zfcp_get_unit_by_lun(port, fcp_lun);
252 if (unit && (atomic_read(&unit->refcount) == 0)) {
253 zfcp_unit_get(unit);
254 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
255 list_move(&unit->list, &port->unit_remove_lh);
256 } else
257 unit = NULL;
258
259 write_unlock_irq(&zfcp_data.config_lock);
260
261 if (!unit) {
262 retval = -ENXIO;
263 goto out;
264 }
265
266 zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
267 zfcp_erp_wait(unit->port->adapter);
268 zfcp_unit_put(unit);
269 zfcp_unit_dequeue(unit);
270out:
271 up(&zfcp_data.config_sema);
272 return retval ? retval : (ssize_t) count;
273}
274static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
275
276static struct attribute *zfcp_port_ns_attrs[] = {
277 &dev_attr_port_failed.attr,
278 &dev_attr_port_in_recovery.attr,
279 &dev_attr_port_status.attr,
280 &dev_attr_port_access_denied.attr,
281 NULL
282};
283
284/**
285 * zfcp_sysfs_ns_port_attrs - sysfs attributes for nameserver
286 */
287struct attribute_group zfcp_sysfs_ns_port_attrs = {
288 .attrs = zfcp_port_ns_attrs,
289};
290
291static struct attribute *zfcp_port_no_ns_attrs[] = {
292 &dev_attr_unit_add.attr,
293 &dev_attr_unit_remove.attr,
294 &dev_attr_port_failed.attr,
295 &dev_attr_port_in_recovery.attr,
296 &dev_attr_port_status.attr,
297 &dev_attr_port_access_denied.attr,
298 NULL
299};
300
301/**
302 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
303 */
304struct attribute_group zfcp_sysfs_port_attrs = {
305 .attrs = zfcp_port_no_ns_attrs,
306};
307
308static struct attribute *zfcp_unit_attrs[] = {
309 &dev_attr_unit_failed.attr,
310 &dev_attr_unit_in_recovery.attr,
311 &dev_attr_unit_status.attr,
312 &dev_attr_unit_access_denied.attr,
313 &dev_attr_unit_access_shared.attr,
314 &dev_attr_unit_access_readonly.attr,
315 NULL
316};
317
318struct attribute_group zfcp_sysfs_unit_attrs = {
319 .attrs = zfcp_unit_attrs,
320};
321
322#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
323static ssize_t \
324zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
325 struct device_attribute *attr, \
326 char *buf) { \
327 struct scsi_device *sdev = to_scsi_device(dev); \
328 struct zfcp_unit *unit = sdev->hostdata; \
329 struct zfcp_latencies *lat = &unit->latencies; \
330 struct zfcp_adapter *adapter = unit->port->adapter; \
331 unsigned long flags; \
332 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
333 \
334 spin_lock_irqsave(&lat->lock, flags); \
335 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
336 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
337 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
338 csum = lat->_name.channel.sum * adapter->timer_ticks; \
339 cmin = lat->_name.channel.min * adapter->timer_ticks; \
340 cmax = lat->_name.channel.max * adapter->timer_ticks; \
341 cc = lat->_name.counter; \
342 spin_unlock_irqrestore(&lat->lock, flags); \
343 \
344 do_div(fsum, 1000); \
345 do_div(fmin, 1000); \
346 do_div(fmax, 1000); \
347 do_div(csum, 1000); \
348 do_div(cmin, 1000); \
349 do_div(cmax, 1000); \
350 \
351 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
352 fmin, fmax, fsum, cmin, cmax, csum, cc); \
353} \
354static ssize_t \
355zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
356 struct device_attribute *attr, \
357 const char *buf, size_t count) \
358{ \
359 struct scsi_device *sdev = to_scsi_device(dev); \
360 struct zfcp_unit *unit = sdev->hostdata; \
361 struct zfcp_latencies *lat = &unit->latencies; \
362 unsigned long flags; \
363 \
364 spin_lock_irqsave(&lat->lock, flags); \
365 lat->_name.fabric.sum = 0; \
366 lat->_name.fabric.min = 0xFFFFFFFF; \
367 lat->_name.fabric.max = 0; \
368 lat->_name.channel.sum = 0; \
369 lat->_name.channel.min = 0xFFFFFFFF; \
370 lat->_name.channel.max = 0; \
371 lat->_name.counter = 0; \
372 spin_unlock_irqrestore(&lat->lock, flags); \
373 \
374 return (ssize_t) count; \
375} \
376static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
377 zfcp_sysfs_unit_##_name##_latency_show, \
378 zfcp_sysfs_unit_##_name##_latency_store);
379
380ZFCP_DEFINE_LATENCY_ATTR(read);
381ZFCP_DEFINE_LATENCY_ATTR(write);
382ZFCP_DEFINE_LATENCY_ATTR(cmd);
383
384#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
385static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
386 struct device_attribute *attr,\
387 char *buf) \
388{ \
389 struct scsi_device *sdev = to_scsi_device(dev); \
390 struct zfcp_unit *unit = sdev->hostdata; \
391 \
392 return sprintf(buf, _format, _value); \
393} \
394static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
395
396ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
397 unit->port->adapter->ccw_device->dev.bus_id);
398ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn);
399ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun);
400
401struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
402 &dev_attr_fcp_lun,
403 &dev_attr_wwpn,
404 &dev_attr_hba_id,
405 &dev_attr_read_latency,
406 &dev_attr_write_latency,
407 &dev_attr_cmd_latency,
408 NULL
409};
410
411static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
412 struct device_attribute *attr,
413 char *buf)
414{
415 struct Scsi_Host *scsi_host = dev_to_shost(dev);
416 struct fsf_qtcb_bottom_port *qtcb_port;
417 struct zfcp_adapter *adapter;
418 int retval;
419
420 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
421 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
422 return -EOPNOTSUPP;
423
424 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
425 if (!qtcb_port)
426 return -ENOMEM;
427
428 retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port);
429 if (!retval)
430 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
431 qtcb_port->cb_util, qtcb_port->a_util);
432 kfree(qtcb_port);
433 return retval;
434}
435static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
436
437static int zfcp_sysfs_adapter_ex_config(struct device *dev,
438 struct fsf_statistics_info *stat_inf)
439{
440 struct Scsi_Host *scsi_host = dev_to_shost(dev);
441 struct fsf_qtcb_bottom_config *qtcb_config;
442 struct zfcp_adapter *adapter;
443 int retval;
444
445 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
446 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
447 return -EOPNOTSUPP;
448
449 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
450 GFP_KERNEL);
451 if (!qtcb_config)
452 return -ENOMEM;
453
454 retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
455 if (!retval)
456 *stat_inf = qtcb_config->stat_info;
457
458 kfree(qtcb_config);
459 return retval;
460}
461
462#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
463static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
464 struct device_attribute *attr,\
465 char *buf) \
466{ \
467 struct fsf_statistics_info stat_info; \
468 int retval; \
469 \
470 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
471 if (retval) \
472 return retval; \
473 \
474 return sprintf(buf, _format, ## _arg); \
475} \
476static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
477
478ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
479 (unsigned long long) stat_info.input_req,
480 (unsigned long long) stat_info.output_req,
481 (unsigned long long) stat_info.control_req);
482
483ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
484 (unsigned long long) stat_info.input_mb,
485 (unsigned long long) stat_info.output_mb);
486
487ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
488 (unsigned long long) stat_info.seconds_act);
489
490struct device_attribute *zfcp_sysfs_shost_attrs[] = {
491 &dev_attr_utilization,
492 &dev_attr_requests,
493 &dev_attr_megabytes,
494 &dev_attr_seconds_active,
495 NULL
496};
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 16:59:23 -0500