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License cleanup: add SPDX GPL-2.0 license identifier to files with no license
[linux-block.git] / drivers / s390 / scsi / zfcp_sysfs.c
CommitLineData
b2441318 1// SPDX-License-Identifier: GPL-2.0
60221920
SS		 2/*
3 * zfcp device driver
4 *
5 * sysfs attributes.
6 *
a53c8fab 7 * Copyright IBM Corp. 2008, 2010
60221920
SS		 8 */
9
ecf39d42
CS		 10#define KMSG_COMPONENT "zfcp"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
5a0e3ad6 13#include <linux/slab.h>
60221920
SS		 14#include "zfcp_ext.h"
15
16#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
17struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
18 _show, _store)
19#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
20static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
21 struct device_attribute *at,\
22 char *buf) \
23{ \
615f59e0 24 struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
60221920
SS		 25 \
26 return sprintf(buf, _format, _value); \
27} \
28static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
29 zfcp_sysfs_##_feat##_##_name##_show, NULL);
30
b5dc3c48
MP		 31#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
32static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
33 struct device_attribute *at,\
34 char *buf) \
35{ \
36 return sprintf(buf, _format, _value); \
37} \
38static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
39 zfcp_sysfs_##_feat##_##_name##_show, NULL);
40
de3dc572
SS		 41#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
42static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
43 struct device_attribute *at,\
44 char *buf) \
45{ \
46 struct ccw_device *cdev = to_ccwdev(dev); \
47 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
48 int i; \
49 \
50 if (!adapter) \
51 return -ENODEV; \
52 \
53 i = sprintf(buf, _format, _value); \
54 zfcp_ccw_adapter_put(adapter); \
55 return i; \
56} \
57static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
58 zfcp_sysfs_adapter_##_name##_show, NULL);
59
60ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
61ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
62 (unsigned long long) adapter->peer_wwnn);
63ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
64 (unsigned long long) adapter->peer_wwpn);
65ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
66ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
67ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
68ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
69ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
70 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
60221920
SS		 71
72ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
73 atomic_read(&port->status));
74ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
75 (atomic_read(&port->status) &
76 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
1b33ef23 77ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
60221920
SS		 78
79ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
b62a8d9b 80 zfcp_unit_sdev_status(unit));
60221920 81ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
b62a8d9b 82 (zfcp_unit_sdev_status(unit) &
60221920
SS		 83 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
84ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
b62a8d9b 85 (zfcp_unit_sdev_status(unit) &
60221920 86 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
b5dc3c48
MP		 87ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
88ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
60221920 89
e4b9857f
CS		 90static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
91 struct device_attribute *attr,
92 char *buf)
93{
94 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
60221920 95
e4b9857f
CS		 96 if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
97 return sprintf(buf, "1\n");
98
99 return sprintf(buf, "0\n");
100}
101
102static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
103 struct device_attribute *attr,
104 const char *buf, size_t count)
105{
106 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
107 unsigned long val;
108
ee732ea8 109 if (kstrtoul(buf, 0, &val) || val != 0)
e4b9857f
CS		 110 return -EINVAL;
111
edaed859 112 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
ea4a3a6a 113 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
e4b9857f
CS		 114 zfcp_erp_wait(port->adapter);
115
116 return count;
117}
118static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
119 zfcp_sysfs_port_failed_show,
120 zfcp_sysfs_port_failed_store);
121
122static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
123 struct device_attribute *attr,
124 char *buf)
125{
126 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
b62a8d9b
CS		 127 struct scsi_device *sdev;
128 unsigned int status, failed = 1;
129
130 sdev = zfcp_unit_sdev(unit);
131 if (sdev) {
132 status = atomic_read(&sdev_to_zfcp(sdev)->status);
133 failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
134 scsi_device_put(sdev);
135 }
e4b9857f 136
b62a8d9b 137 return sprintf(buf, "%d\n", failed);
e4b9857f
CS		 138}
139
140static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
141 struct device_attribute *attr,
142 const char *buf, size_t count)
143{
144 struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
145 unsigned long val;
b62a8d9b 146 struct scsi_device *sdev;
e4b9857f 147
ee732ea8 148 if (kstrtoul(buf, 0, &val) || val != 0)
e4b9857f
CS		 149 return -EINVAL;
150
b62a8d9b
CS		 151 sdev = zfcp_unit_sdev(unit);
152 if (sdev) {
edaed859 153 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
b62a8d9b 154 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a 155 "syufai2");
b62a8d9b
CS		 156 zfcp_erp_wait(unit->port->adapter);
157 } else
158 zfcp_unit_scsi_scan(unit);
e4b9857f
CS		 159
160 return count;
161}
162static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
163 zfcp_sysfs_unit_failed_show,
164 zfcp_sysfs_unit_failed_store);
60221920 165
de3dc572
SS		 166static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
167 struct device_attribute *attr,
168 char *buf)
169{
170 struct ccw_device *cdev = to_ccwdev(dev);
171 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
172 int i;
173
174 if (!adapter)
175 return -ENODEV;
176
177 if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
178 i = sprintf(buf, "1\n");
179 else
180 i = sprintf(buf, "0\n");
181
182 zfcp_ccw_adapter_put(adapter);
183 return i;
184}
185
186static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
187 struct device_attribute *attr,
188 const char *buf, size_t count)
189{
190 struct ccw_device *cdev = to_ccwdev(dev);
191 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
192 unsigned long val;
193 int retval = 0;
194
195 if (!adapter)
196 return -ENODEV;
197
ee732ea8 198 if (kstrtoul(buf, 0, &val) || val != 0) {
de3dc572
SS		 199 retval = -EINVAL;
200 goto out;
201 }
202
edaed859 203 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
de3dc572 204 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a 205 "syafai2");
de3dc572
SS		 206 zfcp_erp_wait(adapter);
207out:
208 zfcp_ccw_adapter_put(adapter);
209 return retval ? retval : (ssize_t) count;
210}
211static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
212 zfcp_sysfs_adapter_failed_show,
213 zfcp_sysfs_adapter_failed_store);
214
60221920
SS		 215static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
216 struct device_attribute *attr,
217 const char *buf, size_t count)
218{
de3dc572
SS		 219 struct ccw_device *cdev = to_ccwdev(dev);
220 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920 221
de3dc572
SS		 222 if (!adapter)
223 return -ENODEV;
224
18f87a67
MP		 225 /*
226 * Users wish is our command: immediately schedule and flush a
227 * worker to conduct a synchronous port scan, that is, neither
228 * a random delay nor a rate limit is applied here.
229 */
230 queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
231 flush_delayed_work(&adapter->scan_work);
de3dc572 232 zfcp_ccw_adapter_put(adapter);
6b183334 233
9eae07ef 234 return (ssize_t) count;
60221920
SS		 235}
236static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
237 zfcp_sysfs_port_rescan_store);
238
d99b601b
SM		 239DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
240
60221920
SS		 241static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
242 struct device_attribute *attr,
243 const char *buf, size_t count)
244{
de3dc572
SS		 245 struct ccw_device *cdev = to_ccwdev(dev);
246 struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920 247 struct zfcp_port *port;
7ba58c9c 248 u64 wwpn;
6b183334 249 int retval = -EINVAL;
60221920 250
de3dc572
SS		 251 if (!adapter)
252 return -ENODEV;
253
ee732ea8 254 if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
60221920 255 goto out;
60221920 256
60221920 257 port = zfcp_get_port_by_wwpn(adapter, wwpn);
6b183334 258 if (!port)
60221920 259 goto out;
6b183334
SS		 260 else
261 retval = 0;
f3450c7b 262
d99b601b
SM		 263 mutex_lock(&zfcp_sysfs_port_units_mutex);
264 if (atomic_read(&port->units) > 0) {
265 retval = -EBUSY;
266 mutex_unlock(&zfcp_sysfs_port_units_mutex);
267 goto out;
268 }
269 /* port is about to be removed, so no more unit_add */
270 atomic_set(&port->units, -1);
271 mutex_unlock(&zfcp_sysfs_port_units_mutex);
272
f3450c7b
SS		 273 write_lock_irq(&adapter->port_list_lock);
274 list_del(&port->list);
275 write_unlock_irq(&adapter->port_list_lock);
276
615f59e0 277 put_device(&port->dev);
f3450c7b 278
ea4a3a6a 279 zfcp_erp_port_shutdown(port, 0, "syprs_1");
83d4e1c3 280 device_unregister(&port->dev);
60221920 281 out:
de3dc572 282 zfcp_ccw_adapter_put(adapter);
60221920
SS		 283 return retval ? retval : (ssize_t) count;
284}
285static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
286 zfcp_sysfs_port_remove_store);
287
288static struct attribute *zfcp_adapter_attrs[] = {
289 &dev_attr_adapter_failed.attr,
290 &dev_attr_adapter_in_recovery.attr,
291 &dev_attr_adapter_port_remove.attr,
292 &dev_attr_adapter_port_rescan.attr,
293 &dev_attr_adapter_peer_wwnn.attr,
294 &dev_attr_adapter_peer_wwpn.attr,
295 &dev_attr_adapter_peer_d_id.attr,
296 &dev_attr_adapter_card_version.attr,
297 &dev_attr_adapter_lic_version.attr,
298 &dev_attr_adapter_status.attr,
299 &dev_attr_adapter_hardware_version.attr,
300 NULL
301};
302
303struct attribute_group zfcp_sysfs_adapter_attrs = {
304 .attrs = zfcp_adapter_attrs,
305};
306
307static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
308 struct device_attribute *attr,
309 const char *buf, size_t count)
310{
615f59e0 311 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c 312 u64 fcp_lun;
d99b601b 313 int retval;
60221920 314
ee732ea8 315 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5 316 return -EINVAL;
60221920 317
d99b601b
SM		 318 retval = zfcp_unit_add(port, fcp_lun);
319 if (retval)
320 return retval;
60221920 321
1daa4eb5 322 return count;
60221920
SS		 323}
324static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
325
326static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
327 struct device_attribute *attr,
328 const char *buf, size_t count)
329{
615f59e0 330 struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c 331 u64 fcp_lun;
60221920 332
ee732ea8 333 if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5 334 return -EINVAL;
60221920 335
1daa4eb5
CS		 336 if (zfcp_unit_remove(port, fcp_lun))
337 return -EINVAL;
ecf0c772 338
1daa4eb5 339 return count;
60221920
SS		 340}
341static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
342
5ab944f9 343static struct attribute *zfcp_port_attrs[] = {
60221920
SS		 344 &dev_attr_unit_add.attr,
345 &dev_attr_unit_remove.attr,
346 &dev_attr_port_failed.attr,
347 &dev_attr_port_in_recovery.attr,
348 &dev_attr_port_status.attr,
349 &dev_attr_port_access_denied.attr,
350 NULL
351};
83d4e1c3 352static struct attribute_group zfcp_port_attr_group = {
5ab944f9 353 .attrs = zfcp_port_attrs,
60221920 354};
83d4e1c3
SO		 355const struct attribute_group *zfcp_port_attr_groups[] = {
356 &zfcp_port_attr_group,
357 NULL,
358};
60221920
SS		 359
360static struct attribute *zfcp_unit_attrs[] = {
361 &dev_attr_unit_failed.attr,
362 &dev_attr_unit_in_recovery.attr,
363 &dev_attr_unit_status.attr,
364 &dev_attr_unit_access_denied.attr,
b5dc3c48
MP		 365 &dev_attr_unit_access_shared.attr,
366 &dev_attr_unit_access_readonly.attr,
60221920
SS		 367 NULL
368};
86bdf218 369static struct attribute_group zfcp_unit_attr_group = {
60221920
SS		 370 .attrs = zfcp_unit_attrs,
371};
86bdf218
SO		 372const struct attribute_group *zfcp_unit_attr_groups[] = {
373 &zfcp_unit_attr_group,
374 NULL,
375};
60221920
SS		 376
377#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
378static ssize_t \
379zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
380 struct device_attribute *attr, \
381 char *buf) { \
382 struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b
CS		 383 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
384 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
385 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
60221920
SS		 386 unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
387 \
49f0f01c 388 spin_lock_bh(&lat->lock); \
60221920
SS		 389 fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
390 fmin = lat->_name.fabric.min * adapter->timer_ticks; \
391 fmax = lat->_name.fabric.max * adapter->timer_ticks; \
392 csum = lat->_name.channel.sum * adapter->timer_ticks; \
393 cmin = lat->_name.channel.min * adapter->timer_ticks; \
394 cmax = lat->_name.channel.max * adapter->timer_ticks; \
395 cc = lat->_name.counter; \
49f0f01c 396 spin_unlock_bh(&lat->lock); \
60221920
SS		 397 \
398 do_div(fsum, 1000); \
399 do_div(fmin, 1000); \
400 do_div(fmax, 1000); \
401 do_div(csum, 1000); \
402 do_div(cmin, 1000); \
403 do_div(cmax, 1000); \
404 \
405 return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
406 fmin, fmax, fsum, cmin, cmax, csum, cc); \
407} \
408static ssize_t \
409zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
410 struct device_attribute *attr, \
411 const char *buf, size_t count) \
412{ \
413 struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b
CS		 414 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
415 struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
60221920
SS		 416 unsigned long flags; \
417 \
418 spin_lock_irqsave(&lat->lock, flags); \
419 lat->_name.fabric.sum = 0; \
420 lat->_name.fabric.min = 0xFFFFFFFF; \
421 lat->_name.fabric.max = 0; \
422 lat->_name.channel.sum = 0; \
423 lat->_name.channel.min = 0xFFFFFFFF; \
424 lat->_name.channel.max = 0; \
425 lat->_name.counter = 0; \
426 spin_unlock_irqrestore(&lat->lock, flags); \
427 \
428 return (ssize_t) count; \
429} \
430static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
431 zfcp_sysfs_unit_##_name##_latency_show, \
432 zfcp_sysfs_unit_##_name##_latency_store);
433
434ZFCP_DEFINE_LATENCY_ATTR(read);
435ZFCP_DEFINE_LATENCY_ATTR(write);
436ZFCP_DEFINE_LATENCY_ATTR(cmd);
437
438#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
439static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
440 struct device_attribute *attr,\
441 char *buf) \
442{ \
b62a8d9b
CS		 443 struct scsi_device *sdev = to_scsi_device(dev); \
444 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
60221920
SS		 445 \
446 return sprintf(buf, _format, _value); \
447} \
448static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
449
450ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
c8bba144 451 dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
7ba58c9c 452ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
c8bba144 453 (unsigned long long) zfcp_sdev->port->wwpn);
e4b9857f
CS		 454
455static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
456 struct device_attribute *attr,
457 char *buf)
458{
459 struct scsi_device *sdev = to_scsi_device(dev);
e4b9857f 460
b62a8d9b 461 return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
e4b9857f
CS		 462}
463static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
60221920 464
c8bba144
SM		 465ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
466 (atomic_read(&zfcp_sdev->status) &
467 ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
468
469static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
470 struct device_attribute *attr,
471 char *buf)
472{
473 struct scsi_device *sdev = to_scsi_device(dev);
474 unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
475 unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
476
477 return sprintf(buf, "%d\n", failed);
478}
479
480static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
481 struct device_attribute *attr,
482 const char *buf, size_t count)
483{
484 struct scsi_device *sdev = to_scsi_device(dev);
485 unsigned long val;
486
487 if (kstrtoul(buf, 0, &val) || val != 0)
488 return -EINVAL;
489
490 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
491 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
492 "syufai3");
493 zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
494
495 return count;
496}
497static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
498 zfcp_sysfs_scsi_zfcp_failed_show,
499 zfcp_sysfs_scsi_zfcp_failed_store);
500
501ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
502 (atomic_read(&zfcp_sdev->status) &
503 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
504
505ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
506 atomic_read(&zfcp_sdev->status));
507
60221920
SS		 508struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
509 &dev_attr_fcp_lun,
510 &dev_attr_wwpn,
511 &dev_attr_hba_id,
512 &dev_attr_read_latency,
513 &dev_attr_write_latency,
514 &dev_attr_cmd_latency,
c8bba144
SM		 515 &dev_attr_zfcp_access_denied,
516 &dev_attr_zfcp_failed,
517 &dev_attr_zfcp_in_recovery,
518 &dev_attr_zfcp_status,
60221920
SS		 519 NULL
520};
521
522static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
523 struct device_attribute *attr,
524 char *buf)
525{
526 struct Scsi_Host *scsi_host = dev_to_shost(dev);
527 struct fsf_qtcb_bottom_port *qtcb_port;
528 struct zfcp_adapter *adapter;
529 int retval;
530
531 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
532 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
533 return -EOPNOTSUPP;
534
535 qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
536 if (!qtcb_port)
537 return -ENOMEM;
538
564e1c86 539 retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
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SS		 540 if (!retval)
541 retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
542 qtcb_port->cb_util, qtcb_port->a_util);
543 kfree(qtcb_port);
544 return retval;
545}
546static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
547
548static int zfcp_sysfs_adapter_ex_config(struct device *dev,
549 struct fsf_statistics_info *stat_inf)
550{
551 struct Scsi_Host *scsi_host = dev_to_shost(dev);
552 struct fsf_qtcb_bottom_config *qtcb_config;
553 struct zfcp_adapter *adapter;
554 int retval;
555
556 adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
557 if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
558 return -EOPNOTSUPP;
559
560 qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
561 GFP_KERNEL);
562 if (!qtcb_config)
563 return -ENOMEM;
564
564e1c86 565 retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
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SS		 566 if (!retval)
567 *stat_inf = qtcb_config->stat_info;
568
569 kfree(qtcb_config);
570 return retval;
571}
572
573#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
574static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
575 struct device_attribute *attr,\
576 char *buf) \
577{ \
578 struct fsf_statistics_info stat_info; \
579 int retval; \
580 \
581 retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
582 if (retval) \
583 return retval; \
584 \
585 return sprintf(buf, _format, ## _arg); \
586} \
587static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
588
589ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
590 (unsigned long long) stat_info.input_req,
591 (unsigned long long) stat_info.output_req,
592 (unsigned long long) stat_info.control_req);
593
594ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
595 (unsigned long long) stat_info.input_mb,
596 (unsigned long long) stat_info.output_mb);
597
598ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
599 (unsigned long long) stat_info.seconds_act);
600
2450d3e7
SR		 601static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
602 struct device_attribute *attr,
603 char *buf)
604{
605 struct Scsi_Host *scsi_host = class_to_shost(dev);
564e1c86
SS		 606 struct zfcp_qdio *qdio =
607 ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
acf7b861
CS		 608 u64 util;
609
564e1c86
SS		 610 spin_lock_bh(&qdio->stat_lock);
611 util = qdio->req_q_util;
612 spin_unlock_bh(&qdio->stat_lock);
2450d3e7 613
564e1c86 614 return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
acf7b861 615 (unsigned long long)util);
2450d3e7
SR		 616}
617static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
618
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SS		 619struct device_attribute *zfcp_sysfs_shost_attrs[] = {
620 &dev_attr_utilization,
621 &dev_attr_requests,
622 &dev_attr_megabytes,
623 &dev_attr_seconds_active,
2450d3e7 624 &dev_attr_queue_full,
60221920
SS		 625 NULL
626};
Linux 6.x block layer and io_uring tree(s)