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x86/amd-iommu: Add function to complete a tlb flush
[linux/fpc-iii.git] / drivers / s390 / scsi / zfcp_sysfs.c
blobd31000886ca8fcf357dc53786ed248161161a647
1 /*
2 * zfcp device driver
3 *
4 * sysfs attributes.
5 *
6 * Copyright IBM Corporation 2008
7 */
8
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12 #include "zfcp_ext.h"
13
14 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
15 struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
16 _show, _store)
17 #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
18 static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
19 struct device_attribute *at,\
20 char *buf) \
21 { \
22 struct _feat_def *_feat = dev_get_drvdata(dev); \
23 \
24 return sprintf(buf, _format, _value); \
25 } \
26 static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
27 zfcp_sysfs_##_feat##_##_name##_show, NULL);
28
29 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
30 atomic_read(&adapter->status));
31 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
32 (unsigned long long) adapter->peer_wwnn);
33 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
34 (unsigned long long) adapter->peer_wwpn);
35 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
36 adapter->peer_d_id);
37 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
38 adapter->hydra_version);
39 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
40 adapter->fsf_lic_version);
41 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
42 adapter->hardware_version);
43 ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n",
44 (atomic_read(&adapter->status) &
45 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
46
47 ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
48 atomic_read(&port->status));
49 ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
50 (atomic_read(&port->status) &
51 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
52 ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
53 (atomic_read(&port->status) &
54 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
55
56 ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
57 atomic_read(&unit->status));
58 ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
59 (atomic_read(&unit->status) &
60 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
61 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
62 (atomic_read(&unit->status) &
63 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
64 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
65 (atomic_read(&unit->status) &
66 ZFCP_STATUS_UNIT_SHARED) != 0);
67 ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
68 (atomic_read(&unit->status) &
69 ZFCP_STATUS_UNIT_READONLY) != 0);
70
71 #define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \
72 static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \
73 struct device_attribute *attr, \
74 char *buf) \
75 { \
76 struct _feat_def *_feat = dev_get_drvdata(dev); \
77 \
78 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
79 return sprintf(buf, "1\n"); \
80 else \
81 return sprintf(buf, "0\n"); \
82 } \
83 static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
84 struct device_attribute *attr,\
85 const char *buf, size_t count)\
86 { \
87 struct _feat_def *_feat = dev_get_drvdata(dev); \
88 unsigned long val; \
89 int retval = 0; \
90 \
91 mutex_lock(&zfcp_data.config_mutex); \
92 if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \
93 retval = -EBUSY; \
94 goto out; \
95 } \
96 \
97 if (strict_strtoul(buf, 0, &val) || val != 0) { \
98 retval = -EINVAL; \
99 goto out; \
100 } \
101 \
102 zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \
103 ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
104 zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \
105 _reopen_id, NULL); \
106 zfcp_erp_wait(_adapter); \
107 out: \
108 mutex_unlock(&zfcp_data.config_mutex); \
109 return retval ? retval : (ssize_t) count; \
110 } \
111 static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \
112 zfcp_sysfs_##_feat##_failed_show, \
113 zfcp_sysfs_##_feat##_failed_store);
114
115 ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, "syafai1", "syafai2");
116 ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2");
117 ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2");
118
119 static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
120 struct device_attribute *attr,
121 const char *buf, size_t count)
122 {
123 struct zfcp_adapter *adapter = dev_get_drvdata(dev);
124 int ret;
125
126 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE)
127 return -EBUSY;
128
129 ret = zfcp_fc_scan_ports(adapter);
130 return ret ? ret : (ssize_t) count;
131 }
132 static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
133 zfcp_sysfs_port_rescan_store);
134
135 static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
136 struct device_attribute *attr,
137 const char *buf, size_t count)
138 {
139 struct zfcp_adapter *adapter = dev_get_drvdata(dev);
140 struct zfcp_port *port;
141 u64 wwpn;
142 int retval = 0;
143 LIST_HEAD(port_remove_lh);
144
145 mutex_lock(&zfcp_data.config_mutex);
146 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
147 retval = -EBUSY;
148 goto out;
149 }
150
151 if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) {
152 retval = -EINVAL;
153 goto out;
154 }
155
156 write_lock_irq(&zfcp_data.config_lock);
157 port = zfcp_get_port_by_wwpn(adapter, wwpn);
158 if (port && (atomic_read(&port->refcount) == 0)) {
159 zfcp_port_get(port);
160 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
161 list_move(&port->list, &port_remove_lh);
162 } else
163 port = NULL;
164 write_unlock_irq(&zfcp_data.config_lock);
165
166 if (!port) {
167 retval = -ENXIO;
168 goto out;
169 }
170
171 zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL);
172 zfcp_erp_wait(adapter);
173 zfcp_port_put(port);
174 zfcp_port_dequeue(port);
175 out:
176 mutex_unlock(&zfcp_data.config_mutex);
177 return retval ? retval : (ssize_t) count;
178 }
179 static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
180 zfcp_sysfs_port_remove_store);
181
182 static struct attribute *zfcp_adapter_attrs[] = {
183 &dev_attr_adapter_failed.attr,
184 &dev_attr_adapter_in_recovery.attr,
185 &dev_attr_adapter_port_remove.attr,
186 &dev_attr_adapter_port_rescan.attr,
187 &dev_attr_adapter_peer_wwnn.attr,
188 &dev_attr_adapter_peer_wwpn.attr,
189 &dev_attr_adapter_peer_d_id.attr,
190 &dev_attr_adapter_card_version.attr,
191 &dev_attr_adapter_lic_version.attr,
192 &dev_attr_adapter_status.attr,
193 &dev_attr_adapter_hardware_version.attr,
194 NULL
195 };
196
197 struct attribute_group zfcp_sysfs_adapter_attrs = {
198 .attrs = zfcp_adapter_attrs,
199 };
200
201 static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
202 struct device_attribute *attr,
203 const char *buf, size_t count)
204 {
205 struct zfcp_port *port = dev_get_drvdata(dev);
206 struct zfcp_unit *unit;
207 u64 fcp_lun;
208 int retval = -EINVAL;
209
210 mutex_lock(&zfcp_data.config_mutex);
211 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
212 retval = -EBUSY;
213 goto out;
214 }
215
216 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
217 goto out;
218
219 unit = zfcp_unit_enqueue(port, fcp_lun);
220 if (IS_ERR(unit))
221 goto out;
222
223 retval = 0;
224
225 zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
226 zfcp_erp_wait(unit->port->adapter);
227 flush_work(&unit->scsi_work);
228 zfcp_unit_put(unit);
229 out:
230 mutex_unlock(&zfcp_data.config_mutex);
231 return retval ? retval : (ssize_t) count;
232 }
233 static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
234
235 static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
236 struct device_attribute *attr,
237 const char *buf, size_t count)
238 {
239 struct zfcp_port *port = dev_get_drvdata(dev);
240 struct zfcp_unit *unit;
241 u64 fcp_lun;
242 int retval = 0;
243 LIST_HEAD(unit_remove_lh);
244
245 mutex_lock(&zfcp_data.config_mutex);
246 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
247 retval = -EBUSY;
248 goto out;
249 }
250
251 if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) {
252 retval = -EINVAL;
253 goto out;
254 }
255
256 write_lock_irq(&zfcp_data.config_lock);
257 unit = zfcp_get_unit_by_lun(port, fcp_lun);
258 if (unit) {
259 write_unlock_irq(&zfcp_data.config_lock);
260 /* wait for possible timeout during SCSI probe */
261 flush_work(&unit->scsi_work);
262 write_lock_irq(&zfcp_data.config_lock);
263
264 if (atomic_read(&unit->refcount) == 0) {
265 zfcp_unit_get(unit);
266 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE,
267 &unit->status);
268 list_move(&unit->list, &unit_remove_lh);
269 } else {
270 unit = NULL;
271 }
272 }
273
274 write_unlock_irq(&zfcp_data.config_lock);
275
276 if (!unit) {
277 retval = -ENXIO;
278 goto out;
279 }
280
281 zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
282 zfcp_erp_wait(unit->port->adapter);
283 zfcp_unit_put(unit);
284 zfcp_unit_dequeue(unit);
285 out:
286 mutex_unlock(&zfcp_data.config_mutex);
287 return retval ? retval : (ssize_t) count;
288 }
289 static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
290
291 static struct attribute *zfcp_port_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 */
304 struct attribute_group zfcp_sysfs_port_attrs = {
305 .attrs = zfcp_port_attrs,
306 };
307
308 static 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
318 struct attribute_group zfcp_sysfs_unit_attrs = {
319 .attrs = zfcp_unit_attrs,
320 };
321
322 #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
323 static ssize_t \
324 zfcp_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 long fsum, fmin, fmax, csum, cmin, cmax, cc; \
332 \
333 spin_lock_bh(&lat->lock); \
334 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
335 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
336 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
337 csum = lat->_name.channel.sum * adapter->timer_ticks; \
338 cmin = lat->_name.channel.min * adapter->timer_ticks; \
339 cmax = lat->_name.channel.max * adapter->timer_ticks; \
340 cc = lat->_name.counter; \
341 spin_unlock_bh(&lat->lock); \
342 \
343 do_div(fsum, 1000); \
344 do_div(fmin, 1000); \
345 do_div(fmax, 1000); \
346 do_div(csum, 1000); \
347 do_div(cmin, 1000); \
348 do_div(cmax, 1000); \
349 \
350 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
351 fmin, fmax, fsum, cmin, cmax, csum, cc); \
352 } \
353 static ssize_t \
354 zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
355 struct device_attribute *attr, \
356 const char *buf, size_t count) \
357 { \
358 struct scsi_device *sdev = to_scsi_device(dev); \
359 struct zfcp_unit *unit = sdev->hostdata; \
360 struct zfcp_latencies *lat = &unit->latencies; \
361 unsigned long flags; \
362 \
363 spin_lock_irqsave(&lat->lock, flags); \
364 lat->_name.fabric.sum = 0; \
365 lat->_name.fabric.min = 0xFFFFFFFF; \
366 lat->_name.fabric.max = 0; \
367 lat->_name.channel.sum = 0; \
368 lat->_name.channel.min = 0xFFFFFFFF; \
369 lat->_name.channel.max = 0; \
370 lat->_name.counter = 0; \
371 spin_unlock_irqrestore(&lat->lock, flags); \
372 \
373 return (ssize_t) count; \
374 } \
375 static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
376 zfcp_sysfs_unit_##_name##_latency_show, \
377 zfcp_sysfs_unit_##_name##_latency_store);
378
379 ZFCP_DEFINE_LATENCY_ATTR(read);
380 ZFCP_DEFINE_LATENCY_ATTR(write);
381 ZFCP_DEFINE_LATENCY_ATTR(cmd);
382
383 #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
384 static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
385 struct device_attribute *attr,\
386 char *buf) \
387 { \
388 struct scsi_device *sdev = to_scsi_device(dev); \
389 struct zfcp_unit *unit = sdev->hostdata; \
390 \
391 return sprintf(buf, _format, _value); \
392 } \
393 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
394
395 ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
396 dev_name(&unit->port->adapter->ccw_device->dev));
397 ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
398 (unsigned long long) unit->port->wwpn);
399 ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
400 (unsigned long long) unit->fcp_lun);
401
402 struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
403 &dev_attr_fcp_lun,
404 &dev_attr_wwpn,
405 &dev_attr_hba_id,
406 &dev_attr_read_latency,
407 &dev_attr_write_latency,
408 &dev_attr_cmd_latency,
409 NULL
410 };
411
412 static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
413 struct device_attribute *attr,
414 char *buf)
415 {
416 struct Scsi_Host *scsi_host = dev_to_shost(dev);
417 struct fsf_qtcb_bottom_port *qtcb_port;
418 struct zfcp_adapter *adapter;
419 int retval;
420
421 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
422 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
423 return -EOPNOTSUPP;
424
425 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
426 if (!qtcb_port)
427 return -ENOMEM;
428
429 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
430 if (!retval)
431 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
432 qtcb_port->cb_util, qtcb_port->a_util);
433 kfree(qtcb_port);
434 return retval;
435 }
436 static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
437
438 static int zfcp_sysfs_adapter_ex_config(struct device *dev,
439 struct fsf_statistics_info *stat_inf)
440 {
441 struct Scsi_Host *scsi_host = dev_to_shost(dev);
442 struct fsf_qtcb_bottom_config *qtcb_config;
443 struct zfcp_adapter *adapter;
444 int retval;
445
446 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
447 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
448 return -EOPNOTSUPP;
449
450 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
451 GFP_KERNEL);
452 if (!qtcb_config)
453 return -ENOMEM;
454
455 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
456 if (!retval)
457 *stat_inf = qtcb_config->stat_info;
458
459 kfree(qtcb_config);
460 return retval;
461 }
462
463 #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
464 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
465 struct device_attribute *attr,\
466 char *buf) \
467 { \
468 struct fsf_statistics_info stat_info; \
469 int retval; \
470 \
471 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
472 if (retval) \
473 return retval; \
474 \
475 return sprintf(buf, _format, ## _arg); \
476 } \
477 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
478
479 ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
480 (unsigned long long) stat_info.input_req,
481 (unsigned long long) stat_info.output_req,
482 (unsigned long long) stat_info.control_req);
483
484 ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
485 (unsigned long long) stat_info.input_mb,
486 (unsigned long long) stat_info.output_mb);
487
488 ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
489 (unsigned long long) stat_info.seconds_act);
490
491 static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
492 struct device_attribute *attr,
493 char *buf)
494 {
495 struct Scsi_Host *scsi_host = class_to_shost(dev);
496 struct zfcp_qdio *qdio =
497 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
498 u64 util;
499
500 spin_lock_bh(&qdio->stat_lock);
501 util = qdio->req_q_util;
502 spin_unlock_bh(&qdio->stat_lock);
503
504 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
505 (unsigned long long)util);
506 }
507 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
508
509 struct device_attribute *zfcp_sysfs_shost_attrs[] = {
510 &dev_attr_utilization,
511 &dev_attr_requests,
512 &dev_attr_megabytes,
513 &dev_attr_seconds_active,
514 &dev_attr_queue_full,
515 NULL
516 };
Linux with added FPC-III support