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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
[deliverable/linux.git] / drivers / s390 / scsi / zfcp_sysfs.c
CommitLineData
60221920
SS		 1/*
2 * zfcp device driver
3 *
4 * sysfs attributes.
5 *
a53c8fab 6 * Copyright IBM Corp. 2008, 2010
60221920
SS		 7 */
8
ecf39d42
CS		 9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
5a0e3ad6 12#include <linux/slab.h>
60221920
SS		 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{ \
615f59e0 23 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
60221920
SS		 24 \
25 return sprintf(buf, _format, _value); \
26} \
27static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
28 zfcp_sysfs_##_feat##_##_name##_show, NULL);
29
b5dc3c48
MP		 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
de3dc572
SS		 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);
60221920
SS		 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);
1b33ef23 76ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
60221920
SS		 77
78ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
b62a8d9b 79 zfcp_unit_sdev_status(unit));
60221920 80ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
b62a8d9b 81 (zfcp_unit_sdev_status(unit) &
60221920
SS		 82 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
83ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
b62a8d9b 84 (zfcp_unit_sdev_status(unit) &
60221920 85 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
b5dc3c48
MP		 86ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
87ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
60221920 88
e4b9857f
CS		 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);
60221920 94
e4b9857f
CS		 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
ee732ea8 108 if (kstrtoul(buf, 0, &val) || val != 0)
e4b9857f
CS		 109 return -EINVAL;
110
edaed859 111 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
ea4a3a6a 112 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
e4b9857f
CS		 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);
b62a8d9b
CS		 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 }
e4b9857f 135
b62a8d9b 136 return sprintf(buf, "%d\n", failed);
e4b9857f
CS		 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;
b62a8d9b 145 struct scsi_device *sdev;
e4b9857f 146
ee732ea8 147 if (kstrtoul(buf, 0, &val) || val != 0)
e4b9857f
CS		 148 return -EINVAL;
149
b62a8d9b
CS		 150 sdev = zfcp_unit_sdev(unit);
151 if (sdev) {
edaed859 152 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
b62a8d9b 153 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a 154 "syufai2");
b62a8d9b
CS		 155 zfcp_erp_wait(unit->port->adapter);
156 } else
157 zfcp_unit_scsi_scan(unit);
e4b9857f
CS		 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);
60221920 164
de3dc572
SS		 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
ee732ea8 197 if (kstrtoul(buf, 0, &val) || val != 0) {
de3dc572
SS		 198 retval = -EINVAL;
199 goto out;
200 }
201
edaed859 202 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
de3dc572 203 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a 204 "syafai2");
de3dc572
SS		 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
60221920
SS		 214static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
215 struct device_attribute *attr,
216 const char *buf, size_t count)
217{
de3dc572
SS		 218 struct ccw_device *cdev = to_ccwdev(dev);
219 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920 220
de3dc572
SS		 221 if (!adapter)
222 return -ENODEV;
223
18f87a67
MP		 224 /*
225 * Users wish is our command: immediately schedule and flush a
226 * worker to conduct a synchronous port scan, that is, neither
227 * a random delay nor a rate limit is applied here.
228 */
229 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
230 flush_delayed_work(&adapter->scan_work);
de3dc572 231 zfcp_ccw_adapter_put(adapter);
6b183334 232
9eae07ef 233 return (ssize_t) count;
60221920
SS		 234}
235static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
236 zfcp_sysfs_port_rescan_store);
237
d99b601b
SM		 238DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
239
60221920
SS		 240static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
241 struct device_attribute *attr,
242 const char *buf, size_t count)
243{
de3dc572
SS		 244 struct ccw_device *cdev = to_ccwdev(dev);
245 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920 246 struct zfcp_port *port;
7ba58c9c 247 u64 wwpn;
6b183334 248 int retval = -EINVAL;
60221920 249
de3dc572
SS		 250 if (!adapter)
251 return -ENODEV;
252
ee732ea8 253 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
60221920 254 goto out;
60221920 255
60221920 256 port = zfcp_get_port_by_wwpn(adapter, wwpn);
6b183334 257 if (!port)
60221920 258 goto out;
6b183334
SS		 259 else
260 retval = 0;
f3450c7b 261
d99b601b
SM		 262 mutex_lock(&zfcp_sysfs_port_units_mutex);
263 if (atomic_read(&port->units) > 0) {
264 retval = -EBUSY;
265 mutex_unlock(&zfcp_sysfs_port_units_mutex);
266 goto out;
267 }
268 /* port is about to be removed, so no more unit_add */
269 atomic_set(&port->units, -1);
270 mutex_unlock(&zfcp_sysfs_port_units_mutex);
271
f3450c7b
SS		 272 write_lock_irq(&adapter->port_list_lock);
273 list_del(&port->list);
274 write_unlock_irq(&adapter->port_list_lock);
275
615f59e0 276 put_device(&port->dev);
f3450c7b 277
ea4a3a6a 278 zfcp_erp_port_shutdown(port, 0, "syprs_1");
83d4e1c3 279 device_unregister(&port->dev);
60221920 280 out:
de3dc572 281 zfcp_ccw_adapter_put(adapter);
60221920
SS		 282 return retval ? retval : (ssize_t) count;
283}
284static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
285 zfcp_sysfs_port_remove_store);
286
287static struct attribute *zfcp_adapter_attrs[] = {
288 &dev_attr_adapter_failed.attr,
289 &dev_attr_adapter_in_recovery.attr,
290 &dev_attr_adapter_port_remove.attr,
291 &dev_attr_adapter_port_rescan.attr,
292 &dev_attr_adapter_peer_wwnn.attr,
293 &dev_attr_adapter_peer_wwpn.attr,
294 &dev_attr_adapter_peer_d_id.attr,
295 &dev_attr_adapter_card_version.attr,
296 &dev_attr_adapter_lic_version.attr,
297 &dev_attr_adapter_status.attr,
298 &dev_attr_adapter_hardware_version.attr,
299 NULL
300};
301
302struct attribute_group zfcp_sysfs_adapter_attrs = {
303 .attrs = zfcp_adapter_attrs,
304};
305
306static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
307 struct device_attribute *attr,
308 const char *buf, size_t count)
309{
615f59e0 310 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c 311 u64 fcp_lun;
d99b601b 312 int retval;
60221920 313
ee732ea8 314 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5 315 return -EINVAL;
60221920 316
d99b601b
SM		 317 retval = zfcp_unit_add(port, fcp_lun);
318 if (retval)
319 return retval;
60221920 320
1daa4eb5 321 return count;
60221920
SS		 322}
323static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
324
325static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
326 struct device_attribute *attr,
327 const char *buf, size_t count)
328{
615f59e0 329 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c 330 u64 fcp_lun;
60221920 331
ee732ea8 332 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5 333 return -EINVAL;
60221920 334
1daa4eb5
CS		 335 if (zfcp_unit_remove(port, fcp_lun))
336 return -EINVAL;
ecf0c772 337
1daa4eb5 338 return count;
60221920
SS		 339}
340static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
341
5ab944f9 342static struct attribute *zfcp_port_attrs[] = {
60221920
SS		 343 &dev_attr_unit_add.attr,
344 &dev_attr_unit_remove.attr,
345 &dev_attr_port_failed.attr,
346 &dev_attr_port_in_recovery.attr,
347 &dev_attr_port_status.attr,
348 &dev_attr_port_access_denied.attr,
349 NULL
350};
83d4e1c3 351static struct attribute_group zfcp_port_attr_group = {
5ab944f9 352 .attrs = zfcp_port_attrs,
60221920 353};
83d4e1c3
SO		 354const struct attribute_group *zfcp_port_attr_groups[] = {
355 &zfcp_port_attr_group,
356 NULL,
357};
60221920
SS		 358
359static struct attribute *zfcp_unit_attrs[] = {
360 &dev_attr_unit_failed.attr,
361 &dev_attr_unit_in_recovery.attr,
362 &dev_attr_unit_status.attr,
363 &dev_attr_unit_access_denied.attr,
b5dc3c48
MP		 364 &dev_attr_unit_access_shared.attr,
365 &dev_attr_unit_access_readonly.attr,
60221920
SS		 366 NULL
367};
86bdf218 368static struct attribute_group zfcp_unit_attr_group = {
60221920
SS		 369 .attrs = zfcp_unit_attrs,
370};
86bdf218
SO		 371const struct attribute_group *zfcp_unit_attr_groups[] = {
372 &zfcp_unit_attr_group,
373 NULL,
374};
60221920
SS		 375
376#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
377static ssize_t \
378zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
379 struct device_attribute *attr, \
380 char *buf) { \
381 struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b
CS		 382 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
383 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
384 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
60221920
SS		 385 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
386 \
49f0f01c 387 spin_lock_bh(&lat->lock); \
60221920
SS		 388 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
389 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
390 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
391 csum = lat->_name.channel.sum * adapter->timer_ticks; \
392 cmin = lat->_name.channel.min * adapter->timer_ticks; \
393 cmax = lat->_name.channel.max * adapter->timer_ticks; \
394 cc = lat->_name.counter; \
49f0f01c 395 spin_unlock_bh(&lat->lock); \
60221920
SS		 396 \
397 do_div(fsum, 1000); \
398 do_div(fmin, 1000); \
399 do_div(fmax, 1000); \
400 do_div(csum, 1000); \
401 do_div(cmin, 1000); \
402 do_div(cmax, 1000); \
403 \
404 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
405 fmin, fmax, fsum, cmin, cmax, csum, cc); \
406} \
407static ssize_t \
408zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
409 struct device_attribute *attr, \
410 const char *buf, size_t count) \
411{ \
412 struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b
CS		 413 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
414 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
60221920
SS		 415 unsigned long flags; \
416 \
417 spin_lock_irqsave(&lat->lock, flags); \
418 lat->_name.fabric.sum = 0; \
419 lat->_name.fabric.min = 0xFFFFFFFF; \
420 lat->_name.fabric.max = 0; \
421 lat->_name.channel.sum = 0; \
422 lat->_name.channel.min = 0xFFFFFFFF; \
423 lat->_name.channel.max = 0; \
424 lat->_name.counter = 0; \
425 spin_unlock_irqrestore(&lat->lock, flags); \
426 \
427 return (ssize_t) count; \
428} \
429static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
430 zfcp_sysfs_unit_##_name##_latency_show, \
431 zfcp_sysfs_unit_##_name##_latency_store);
432
433ZFCP_DEFINE_LATENCY_ATTR(read);
434ZFCP_DEFINE_LATENCY_ATTR(write);
435ZFCP_DEFINE_LATENCY_ATTR(cmd);
436
437#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
438static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
439 struct device_attribute *attr,\
440 char *buf) \
441{ \
b62a8d9b
CS		 442 struct scsi_device *sdev = to_scsi_device(dev); \
443 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
60221920
SS		 444 \
445 return sprintf(buf, _format, _value); \
446} \
447static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
448
449ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
c8bba144 450 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
7ba58c9c 451ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
c8bba144 452 (unsigned long long) zfcp_sdev->port->wwpn);
e4b9857f
CS		 453
454static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
455 struct device_attribute *attr,
456 char *buf)
457{
458 struct scsi_device *sdev = to_scsi_device(dev);
e4b9857f 459
b62a8d9b 460 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
e4b9857f
CS		 461}
462static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
60221920 463
c8bba144
SM		 464ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
465 (atomic_read(&zfcp_sdev->status) &
466 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
467
468static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
469 struct device_attribute *attr,
470 char *buf)
471{
472 struct scsi_device *sdev = to_scsi_device(dev);
473 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
474 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
475
476 return sprintf(buf, "%d\n", failed);
477}
478
479static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
480 struct device_attribute *attr,
481 const char *buf, size_t count)
482{
483 struct scsi_device *sdev = to_scsi_device(dev);
484 unsigned long val;
485
486 if (kstrtoul(buf, 0, &val) || val != 0)
487 return -EINVAL;
488
489 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
490 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
491 "syufai3");
492 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
493
494 return count;
495}
496static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
497 zfcp_sysfs_scsi_zfcp_failed_show,
498 zfcp_sysfs_scsi_zfcp_failed_store);
499
500ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
501 (atomic_read(&zfcp_sdev->status) &
502 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
503
504ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
505 atomic_read(&zfcp_sdev->status));
506
60221920
SS		 507struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
508 &dev_attr_fcp_lun,
509 &dev_attr_wwpn,
510 &dev_attr_hba_id,
511 &dev_attr_read_latency,
512 &dev_attr_write_latency,
513 &dev_attr_cmd_latency,
c8bba144
SM		 514 &dev_attr_zfcp_access_denied,
515 &dev_attr_zfcp_failed,
516 &dev_attr_zfcp_in_recovery,
517 &dev_attr_zfcp_status,
60221920
SS		 518 NULL
519};
520
521static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
522 struct device_attribute *attr,
523 char *buf)
524{
525 struct Scsi_Host *scsi_host = dev_to_shost(dev);
526 struct fsf_qtcb_bottom_port *qtcb_port;
527 struct zfcp_adapter *adapter;
528 int retval;
529
530 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
531 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
532 return -EOPNOTSUPP;
533
534 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
535 if (!qtcb_port)
536 return -ENOMEM;
537
564e1c86 538 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
60221920
SS		 539 if (!retval)
540 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
541 qtcb_port->cb_util, qtcb_port->a_util);
542 kfree(qtcb_port);
543 return retval;
544}
545static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
546
547static int zfcp_sysfs_adapter_ex_config(struct device *dev,
548 struct fsf_statistics_info *stat_inf)
549{
550 struct Scsi_Host *scsi_host = dev_to_shost(dev);
551 struct fsf_qtcb_bottom_config *qtcb_config;
552 struct zfcp_adapter *adapter;
553 int retval;
554
555 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
556 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
557 return -EOPNOTSUPP;
558
559 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
560 GFP_KERNEL);
561 if (!qtcb_config)
562 return -ENOMEM;
563
564e1c86 564 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
60221920
SS		 565 if (!retval)
566 *stat_inf = qtcb_config->stat_info;
567
568 kfree(qtcb_config);
569 return retval;
570}
571
572#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
573static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
574 struct device_attribute *attr,\
575 char *buf) \
576{ \
577 struct fsf_statistics_info stat_info; \
578 int retval; \
579 \
580 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
581 if (retval) \
582 return retval; \
583 \
584 return sprintf(buf, _format, ## _arg); \
585} \
586static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
587
588ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
589 (unsigned long long) stat_info.input_req,
590 (unsigned long long) stat_info.output_req,
591 (unsigned long long) stat_info.control_req);
592
593ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
594 (unsigned long long) stat_info.input_mb,
595 (unsigned long long) stat_info.output_mb);
596
597ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
598 (unsigned long long) stat_info.seconds_act);
599
2450d3e7
SR		 600static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
601 struct device_attribute *attr,
602 char *buf)
603{
604 struct Scsi_Host *scsi_host = class_to_shost(dev);
564e1c86
SS		 605 struct zfcp_qdio *qdio =
606 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
acf7b861
CS		 607 u64 util;
608
564e1c86
SS		 609 spin_lock_bh(&qdio->stat_lock);
610 util = qdio->req_q_util;
611 spin_unlock_bh(&qdio->stat_lock);
2450d3e7 612
564e1c86 613 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
acf7b861 614 (unsigned long long)util);
2450d3e7
SR		 615}
616static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
617
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SS		 618struct device_attribute *zfcp_sysfs_shost_attrs[] = {
619 &dev_attr_utilization,
620 &dev_attr_requests,
621 &dev_attr_megabytes,
622 &dev_attr_seconds_active,
2450d3e7 623 &dev_attr_queue_full,
60221920
SS		 624 NULL
625};
Linux kernel - Deliverables
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