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V4L/DVB (8866): Add dummy FE to the Kconfig-file and fix it
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / s390 / scsi / zfcp_sysfs.c
blobca9293ba1766681c7bcc24721a29b4ac37a4f5bc
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) \
12 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
13 _show, _store)
14 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
15 static 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 } \
23 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
24 zfcp_sysfs_##_feat##_##_name##_show, NULL);
25
26 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
27 atomic_read(&adapter->status));
28 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
29 (unsigned long long) adapter->peer_wwnn);
30 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
31 (unsigned long long) adapter->peer_wwpn);
32 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
33 adapter->peer_d_id);
34 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
35 adapter->hydra_version);
36 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
37 adapter->fsf_lic_version);
38 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
39 adapter->hardware_version);
40 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n",
41 (atomic_read(&adapter->status) &
42 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
43
44 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
45 atomic_read(&port->status));
46 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
47 (atomic_read(&port->status) &
48 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
49 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
50 (atomic_read(&port->status) &
51 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
52
53 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
54 atomic_read(&unit->status));
55 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
56 (atomic_read(&unit->status) &
57 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
58 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
59 (atomic_read(&unit->status) &
60 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
61 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
62 (atomic_read(&unit->status) &
63 ZFCP_STATUS_UNIT_SHARED) != 0);
64 ZFCP_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) \
69 static 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 } \
80 static 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); \
104 out: \
105 up(&zfcp_data.config_sema); \
106 return retval ? retval : (ssize_t) count; \
107 } \
108 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \
109 zfcp_sysfs_##_feat##_failed_show, \
110 zfcp_sysfs_##_feat##_failed_store);
111
112 ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, 44, 93);
113 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96);
114 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97);
115
116 static 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 }
129 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
130 zfcp_sysfs_port_rescan_store);
131
132 static 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 u64 wwpn;
139 int retval = 0;
140 LIST_HEAD(port_remove_lh);
141
142 down(&zfcp_data.config_sema);
143 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
144 retval = -EBUSY;
145 goto out;
146 }
147
148 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) {
149 retval = -EINVAL;
150 goto out;
151 }
152
153 write_lock_irq(&zfcp_data.config_lock);
154 port = zfcp_get_port_by_wwpn(adapter, wwpn);
155 if (port && (atomic_read(&port->refcount) == 0)) {
156 zfcp_port_get(port);
157 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
158 list_move(&port->list, &port_remove_lh);
159 } else
160 port = NULL;
161 write_unlock_irq(&zfcp_data.config_lock);
162
163 if (!port) {
164 retval = -ENXIO;
165 goto out;
166 }
167
168 zfcp_erp_port_shutdown(port, 0, 92, NULL);
169 zfcp_erp_wait(adapter);
170 zfcp_port_put(port);
171 zfcp_port_dequeue(port);
172 out:
173 up(&zfcp_data.config_sema);
174 return retval ? retval : (ssize_t) count;
175 }
176 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
177 zfcp_sysfs_port_remove_store);
178
179 static struct attribute *zfcp_adapter_attrs[] = {
180 &dev_attr_adapter_failed.attr,
181 &dev_attr_adapter_in_recovery.attr,
182 &dev_attr_adapter_port_remove.attr,
183 &dev_attr_adapter_port_rescan.attr,
184 &dev_attr_adapter_peer_wwnn.attr,
185 &dev_attr_adapter_peer_wwpn.attr,
186 &dev_attr_adapter_peer_d_id.attr,
187 &dev_attr_adapter_card_version.attr,
188 &dev_attr_adapter_lic_version.attr,
189 &dev_attr_adapter_status.attr,
190 &dev_attr_adapter_hardware_version.attr,
191 NULL
192 };
193
194 struct attribute_group zfcp_sysfs_adapter_attrs = {
195 .attrs = zfcp_adapter_attrs,
196 };
197
198 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
199 struct device_attribute *attr,
200 const char *buf, size_t count)
201 {
202 struct zfcp_port *port = dev_get_drvdata(dev);
203 struct zfcp_unit *unit;
204 u64 fcp_lun;
205 int retval = -EINVAL;
206
207 down(&zfcp_data.config_sema);
208 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
209 retval = -EBUSY;
210 goto out;
211 }
212
213 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
214 goto out;
215
216 unit = zfcp_unit_enqueue(port, fcp_lun);
217 if (IS_ERR(unit))
218 goto out;
219
220 retval = 0;
221
222 zfcp_erp_unit_reopen(unit, 0, 94, NULL);
223 zfcp_erp_wait(unit->port->adapter);
224 zfcp_unit_put(unit);
225 out:
226 up(&zfcp_data.config_sema);
227 return retval ? retval : (ssize_t) count;
228 }
229 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
230
231 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
232 struct device_attribute *attr,
233 const char *buf, size_t count)
234 {
235 struct zfcp_port *port = dev_get_drvdata(dev);
236 struct zfcp_unit *unit;
237 u64 fcp_lun;
238 int retval = 0;
239 LIST_HEAD(unit_remove_lh);
240
241 down(&zfcp_data.config_sema);
242 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
243 retval = -EBUSY;
244 goto out;
245 }
246
247 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) {
248 retval = -EINVAL;
249 goto out;
250 }
251
252 write_lock_irq(&zfcp_data.config_lock);
253 unit = zfcp_get_unit_by_lun(port, fcp_lun);
254 if (unit && (atomic_read(&unit->refcount) == 0)) {
255 zfcp_unit_get(unit);
256 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
257 list_move(&unit->list, &unit_remove_lh);
258 } else
259 unit = NULL;
260
261 write_unlock_irq(&zfcp_data.config_lock);
262
263 if (!unit) {
264 retval = -ENXIO;
265 goto out;
266 }
267
268 zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
269 zfcp_erp_wait(unit->port->adapter);
270 zfcp_unit_put(unit);
271 zfcp_unit_dequeue(unit);
272 out:
273 up(&zfcp_data.config_sema);
274 return retval ? retval : (ssize_t) count;
275 }
276 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
277
278 static struct attribute *zfcp_port_attrs[] = {
279 &dev_attr_unit_add.attr,
280 &dev_attr_unit_remove.attr,
281 &dev_attr_port_failed.attr,
282 &dev_attr_port_in_recovery.attr,
283 &dev_attr_port_status.attr,
284 &dev_attr_port_access_denied.attr,
285 NULL
286 };
287
288 /**
289 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
290 */
291 struct attribute_group zfcp_sysfs_port_attrs = {
292 .attrs = zfcp_port_attrs,
293 };
294
295 static struct attribute *zfcp_unit_attrs[] = {
296 &dev_attr_unit_failed.attr,
297 &dev_attr_unit_in_recovery.attr,
298 &dev_attr_unit_status.attr,
299 &dev_attr_unit_access_denied.attr,
300 &dev_attr_unit_access_shared.attr,
301 &dev_attr_unit_access_readonly.attr,
302 NULL
303 };
304
305 struct attribute_group zfcp_sysfs_unit_attrs = {
306 .attrs = zfcp_unit_attrs,
307 };
308
309 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
310 static ssize_t \
311 zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
312 struct device_attribute *attr, \
313 char *buf) { \
314 struct scsi_device *sdev = to_scsi_device(dev); \
315 struct zfcp_unit *unit = sdev->hostdata; \
316 struct zfcp_latencies *lat = &unit->latencies; \
317 struct zfcp_adapter *adapter = unit->port->adapter; \
318 unsigned long flags; \
319 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
320 \
321 spin_lock_irqsave(&lat->lock, flags); \
322 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
323 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
324 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
325 csum = lat->_name.channel.sum * adapter->timer_ticks; \
326 cmin = lat->_name.channel.min * adapter->timer_ticks; \
327 cmax = lat->_name.channel.max * adapter->timer_ticks; \
328 cc = lat->_name.counter; \
329 spin_unlock_irqrestore(&lat->lock, flags); \
330 \
331 do_div(fsum, 1000); \
332 do_div(fmin, 1000); \
333 do_div(fmax, 1000); \
334 do_div(csum, 1000); \
335 do_div(cmin, 1000); \
336 do_div(cmax, 1000); \
337 \
338 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
339 fmin, fmax, fsum, cmin, cmax, csum, cc); \
340 } \
341 static ssize_t \
342 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
343 struct device_attribute *attr, \
344 const char *buf, size_t count) \
345 { \
346 struct scsi_device *sdev = to_scsi_device(dev); \
347 struct zfcp_unit *unit = sdev->hostdata; \
348 struct zfcp_latencies *lat = &unit->latencies; \
349 unsigned long flags; \
350 \
351 spin_lock_irqsave(&lat->lock, flags); \
352 lat->_name.fabric.sum = 0; \
353 lat->_name.fabric.min = 0xFFFFFFFF; \
354 lat->_name.fabric.max = 0; \
355 lat->_name.channel.sum = 0; \
356 lat->_name.channel.min = 0xFFFFFFFF; \
357 lat->_name.channel.max = 0; \
358 lat->_name.counter = 0; \
359 spin_unlock_irqrestore(&lat->lock, flags); \
360 \
361 return (ssize_t) count; \
362 } \
363 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
364 zfcp_sysfs_unit_##_name##_latency_show, \
365 zfcp_sysfs_unit_##_name##_latency_store);
366
367 ZFCP_DEFINE_LATENCY_ATTR(read);
368 ZFCP_DEFINE_LATENCY_ATTR(write);
369 ZFCP_DEFINE_LATENCY_ATTR(cmd);
370
371 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
372 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
373 struct device_attribute *attr,\
374 char *buf) \
375 { \
376 struct scsi_device *sdev = to_scsi_device(dev); \
377 struct zfcp_unit *unit = sdev->hostdata; \
378 \
379 return sprintf(buf, _format, _value); \
380 } \
381 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
382
383 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
384 dev_name(&unit->port->adapter->ccw_device->dev));
385 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
386 (unsigned long long) unit->port->wwpn);
387 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
388 (unsigned long long) unit->fcp_lun);
389
390 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
391 &dev_attr_fcp_lun,
392 &dev_attr_wwpn,
393 &dev_attr_hba_id,
394 &dev_attr_read_latency,
395 &dev_attr_write_latency,
396 &dev_attr_cmd_latency,
397 NULL
398 };
399
400 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
401 struct device_attribute *attr,
402 char *buf)
403 {
404 struct Scsi_Host *scsi_host = dev_to_shost(dev);
405 struct fsf_qtcb_bottom_port *qtcb_port;
406 struct zfcp_adapter *adapter;
407 int retval;
408
409 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
410 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
411 return -EOPNOTSUPP;
412
413 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
414 if (!qtcb_port)
415 return -ENOMEM;
416
417 retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port);
418 if (!retval)
419 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
420 qtcb_port->cb_util, qtcb_port->a_util);
421 kfree(qtcb_port);
422 return retval;
423 }
424 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
425
426 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
427 struct fsf_statistics_info *stat_inf)
428 {
429 struct Scsi_Host *scsi_host = dev_to_shost(dev);
430 struct fsf_qtcb_bottom_config *qtcb_config;
431 struct zfcp_adapter *adapter;
432 int retval;
433
434 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
435 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
436 return -EOPNOTSUPP;
437
438 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
439 GFP_KERNEL);
440 if (!qtcb_config)
441 return -ENOMEM;
442
443 retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
444 if (!retval)
445 *stat_inf = qtcb_config->stat_info;
446
447 kfree(qtcb_config);
448 return retval;
449 }
450
451 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
452 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
453 struct device_attribute *attr,\
454 char *buf) \
455 { \
456 struct fsf_statistics_info stat_info; \
457 int retval; \
458 \
459 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
460 if (retval) \
461 return retval; \
462 \
463 return sprintf(buf, _format, ## _arg); \
464 } \
465 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
466
467 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
468 (unsigned long long) stat_info.input_req,
469 (unsigned long long) stat_info.output_req,
470 (unsigned long long) stat_info.control_req);
471
472 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
473 (unsigned long long) stat_info.input_mb,
474 (unsigned long long) stat_info.output_mb);
475
476 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
477 (unsigned long long) stat_info.seconds_act);
478
479 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
480 struct device_attribute *attr,
481 char *buf)
482 {
483 struct Scsi_Host *scsi_host = class_to_shost(dev);
484 struct zfcp_adapter *adapter =
485 (struct zfcp_adapter *) scsi_host->hostdata[0];
486
487 return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full));
488 }
489 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
490
491 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
492 &dev_attr_utilization,
493 &dev_attr_requests,
494 &dev_attr_megabytes,
495 &dev_attr_seconds_active,
496 &dev_attr_queue_full,
497 NULL
498 };
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