zfcp_sysfs.c 28 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * zfcp device driver
  4. *
  5. * sysfs attributes.
  6. *
  7. * Copyright IBM Corp. 2008, 2020
  8. */
  9. #define KMSG_COMPONENT "zfcp"
  10. #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11. #include <linux/slab.h>
  12. #include "zfcp_diag.h"
  13. #include "zfcp_ext.h"
  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 = container_of(dev, struct _feat_def, 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. #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
  29. static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
  30. struct device_attribute *at,\
  31. char *buf) \
  32. { \
  33. return sprintf(buf, _format, _value); \
  34. } \
  35. static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
  36. zfcp_sysfs_##_feat##_##_name##_show, NULL);
  37. #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
  38. static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
  39. struct device_attribute *at,\
  40. char *buf) \
  41. { \
  42. struct ccw_device *cdev = to_ccwdev(dev); \
  43. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
  44. int i; \
  45. \
  46. if (!adapter) \
  47. return -ENODEV; \
  48. \
  49. i = sprintf(buf, _format, _value); \
  50. zfcp_ccw_adapter_put(adapter); \
  51. return i; \
  52. } \
  53. static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
  54. zfcp_sysfs_adapter_##_name##_show, NULL);
  55. ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
  56. ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
  57. (unsigned long long) adapter->peer_wwnn);
  58. ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
  59. (unsigned long long) adapter->peer_wwpn);
  60. ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
  61. ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
  62. ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
  63. ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
  64. ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
  65. ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  66. ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
  67. atomic_read(&port->status));
  68. ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
  69. (atomic_read(&port->status) &
  70. ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  71. ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
  72. ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
  73. zfcp_unit_sdev_status(unit));
  74. ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
  75. (zfcp_unit_sdev_status(unit) &
  76. ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  77. ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
  78. (zfcp_unit_sdev_status(unit) &
  79. ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  80. ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
  81. ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
  82. static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
  83. struct device_attribute *attr,
  84. char *buf)
  85. {
  86. struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  87. if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
  88. return sprintf(buf, "1\n");
  89. return sprintf(buf, "0\n");
  90. }
  91. static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
  92. struct device_attribute *attr,
  93. const char *buf, size_t count)
  94. {
  95. struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  96. unsigned long val;
  97. if (kstrtoul(buf, 0, &val) || val != 0)
  98. return -EINVAL;
  99. zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
  100. zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
  101. zfcp_erp_wait(port->adapter);
  102. return count;
  103. }
  104. static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
  105. zfcp_sysfs_port_failed_show,
  106. zfcp_sysfs_port_failed_store);
  107. static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
  108. struct device_attribute *attr,
  109. char *buf)
  110. {
  111. struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
  112. struct scsi_device *sdev;
  113. unsigned int status, failed = 1;
  114. sdev = zfcp_unit_sdev(unit);
  115. if (sdev) {
  116. status = atomic_read(&sdev_to_zfcp(sdev)->status);
  117. failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
  118. scsi_device_put(sdev);
  119. }
  120. return sprintf(buf, "%d\n", failed);
  121. }
  122. static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
  123. struct device_attribute *attr,
  124. const char *buf, size_t count)
  125. {
  126. struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
  127. unsigned long val;
  128. struct scsi_device *sdev;
  129. if (kstrtoul(buf, 0, &val) || val != 0)
  130. return -EINVAL;
  131. sdev = zfcp_unit_sdev(unit);
  132. if (sdev) {
  133. zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
  134. zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
  135. "syufai2");
  136. zfcp_erp_wait(unit->port->adapter);
  137. } else
  138. zfcp_unit_scsi_scan(unit);
  139. return count;
  140. }
  141. static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
  142. zfcp_sysfs_unit_failed_show,
  143. zfcp_sysfs_unit_failed_store);
  144. static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
  145. struct device_attribute *attr,
  146. char *buf)
  147. {
  148. struct ccw_device *cdev = to_ccwdev(dev);
  149. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
  150. int i;
  151. if (!adapter)
  152. return -ENODEV;
  153. if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
  154. i = sprintf(buf, "1\n");
  155. else
  156. i = sprintf(buf, "0\n");
  157. zfcp_ccw_adapter_put(adapter);
  158. return i;
  159. }
  160. static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
  161. struct device_attribute *attr,
  162. const char *buf, size_t count)
  163. {
  164. struct ccw_device *cdev = to_ccwdev(dev);
  165. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
  166. unsigned long val;
  167. int retval = 0;
  168. if (!adapter)
  169. return -ENODEV;
  170. if (kstrtoul(buf, 0, &val) || val != 0) {
  171. retval = -EINVAL;
  172. goto out;
  173. }
  174. zfcp_erp_adapter_reset_sync(adapter, "syafai2");
  175. out:
  176. zfcp_ccw_adapter_put(adapter);
  177. return retval ? retval : (ssize_t) count;
  178. }
  179. static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
  180. zfcp_sysfs_adapter_failed_show,
  181. zfcp_sysfs_adapter_failed_store);
  182. static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
  183. struct device_attribute *attr,
  184. const char *buf, size_t count)
  185. {
  186. struct ccw_device *cdev = to_ccwdev(dev);
  187. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
  188. int retval = 0;
  189. if (!adapter)
  190. return -ENODEV;
  191. /*
  192. * If `scsi_host` is missing, we can't schedule `scan_work`, as it
  193. * makes use of the corresponding fc_host object. But this state is
  194. * only possible if xconfig/xport data has never completed yet,
  195. * and we couldn't successfully scan for ports anyway.
  196. */
  197. if (adapter->scsi_host == NULL) {
  198. retval = -ENODEV;
  199. goto out;
  200. }
  201. /*
  202. * Users wish is our command: immediately schedule and flush a
  203. * worker to conduct a synchronous port scan, that is, neither
  204. * a random delay nor a rate limit is applied here.
  205. */
  206. queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
  207. flush_delayed_work(&adapter->scan_work);
  208. out:
  209. zfcp_ccw_adapter_put(adapter);
  210. return retval ? retval : (ssize_t) count;
  211. }
  212. static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
  213. zfcp_sysfs_port_rescan_store);
  214. DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
  215. static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port)
  216. {
  217. lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
  218. atomic_set(&port->units, -1);
  219. }
  220. bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port)
  221. {
  222. lockdep_assert_held(&zfcp_sysfs_port_units_mutex);
  223. return atomic_read(&port->units) == -1;
  224. }
  225. static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port)
  226. {
  227. struct zfcp_adapter *const adapter = port->adapter;
  228. unsigned long flags;
  229. struct scsi_device *sdev;
  230. bool in_use = true;
  231. mutex_lock(&zfcp_sysfs_port_units_mutex);
  232. if (atomic_read(&port->units) > 0)
  233. goto unlock_port_units_mutex; /* zfcp_unit(s) under port */
  234. spin_lock_irqsave(adapter->scsi_host->host_lock, flags);
  235. __shost_for_each_device(sdev, adapter->scsi_host) {
  236. const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
  237. if (sdev->sdev_state == SDEV_DEL ||
  238. sdev->sdev_state == SDEV_CANCEL)
  239. continue;
  240. if (zsdev->port != port)
  241. continue;
  242. /* alive scsi_device under port of interest */
  243. goto unlock_host_lock;
  244. }
  245. /* port is about to be removed, so no more unit_add or slave_alloc */
  246. zfcp_sysfs_port_set_removing(port);
  247. in_use = false;
  248. unlock_host_lock:
  249. spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags);
  250. unlock_port_units_mutex:
  251. mutex_unlock(&zfcp_sysfs_port_units_mutex);
  252. return in_use;
  253. }
  254. static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
  255. struct device_attribute *attr,
  256. const char *buf, size_t count)
  257. {
  258. struct ccw_device *cdev = to_ccwdev(dev);
  259. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
  260. struct zfcp_port *port;
  261. u64 wwpn;
  262. int retval = -EINVAL;
  263. if (!adapter)
  264. return -ENODEV;
  265. if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
  266. goto out;
  267. port = zfcp_get_port_by_wwpn(adapter, wwpn);
  268. if (!port)
  269. goto out;
  270. else
  271. retval = 0;
  272. if (zfcp_sysfs_port_in_use(port)) {
  273. retval = -EBUSY;
  274. put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */
  275. goto out;
  276. }
  277. write_lock_irq(&adapter->port_list_lock);
  278. list_del(&port->list);
  279. write_unlock_irq(&adapter->port_list_lock);
  280. put_device(&port->dev);
  281. zfcp_erp_port_shutdown(port, 0, "syprs_1");
  282. device_unregister(&port->dev);
  283. out:
  284. zfcp_ccw_adapter_put(adapter);
  285. return retval ? retval : (ssize_t) count;
  286. }
  287. static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
  288. zfcp_sysfs_port_remove_store);
  289. static ssize_t
  290. zfcp_sysfs_adapter_diag_max_age_show(struct device *dev,
  291. struct device_attribute *attr, char *buf)
  292. {
  293. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
  294. ssize_t rc;
  295. if (!adapter)
  296. return -ENODEV;
  297. /* ceil(log(2^64 - 1) / log(10)) = 20 */
  298. rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age);
  299. zfcp_ccw_adapter_put(adapter);
  300. return rc;
  301. }
  302. static ssize_t
  303. zfcp_sysfs_adapter_diag_max_age_store(struct device *dev,
  304. struct device_attribute *attr,
  305. const char *buf, size_t count)
  306. {
  307. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
  308. unsigned long max_age;
  309. ssize_t rc;
  310. if (!adapter)
  311. return -ENODEV;
  312. rc = kstrtoul(buf, 10, &max_age);
  313. if (rc != 0)
  314. goto out;
  315. adapter->diagnostics->max_age = max_age;
  316. rc = count;
  317. out:
  318. zfcp_ccw_adapter_put(adapter);
  319. return rc;
  320. }
  321. static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644,
  322. zfcp_sysfs_adapter_diag_max_age_show,
  323. zfcp_sysfs_adapter_diag_max_age_store);
  324. static ssize_t zfcp_sysfs_adapter_fc_security_show(
  325. struct device *dev, struct device_attribute *attr, char *buf)
  326. {
  327. struct ccw_device *cdev = to_ccwdev(dev);
  328. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
  329. unsigned int status;
  330. int i;
  331. if (!adapter)
  332. return -ENODEV;
  333. /*
  334. * Adapter status COMMON_OPEN implies xconf data and xport data
  335. * was done. Adapter FC Endpoint Security capability remains
  336. * unchanged in case of COMMON_ERP_FAILED (e.g. due to local link
  337. * down).
  338. */
  339. status = atomic_read(&adapter->status);
  340. if (0 == (status & ZFCP_STATUS_COMMON_OPEN))
  341. i = sprintf(buf, "unknown\n");
  342. else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
  343. i = sprintf(buf, "unsupported\n");
  344. else {
  345. i = zfcp_fsf_scnprint_fc_security(
  346. buf, PAGE_SIZE - 1, adapter->fc_security_algorithms,
  347. ZFCP_FSF_PRINT_FMT_LIST);
  348. i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
  349. }
  350. zfcp_ccw_adapter_put(adapter);
  351. return i;
  352. }
  353. static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO,
  354. zfcp_sysfs_adapter_fc_security_show,
  355. NULL);
  356. static struct attribute *zfcp_adapter_attrs[] = {
  357. &dev_attr_adapter_failed.attr,
  358. &dev_attr_adapter_in_recovery.attr,
  359. &dev_attr_adapter_port_remove.attr,
  360. &dev_attr_adapter_port_rescan.attr,
  361. &dev_attr_adapter_peer_wwnn.attr,
  362. &dev_attr_adapter_peer_wwpn.attr,
  363. &dev_attr_adapter_peer_d_id.attr,
  364. &dev_attr_adapter_card_version.attr,
  365. &dev_attr_adapter_lic_version.attr,
  366. &dev_attr_adapter_status.attr,
  367. &dev_attr_adapter_hardware_version.attr,
  368. &dev_attr_adapter_diag_max_age.attr,
  369. &dev_attr_adapter_fc_security.attr,
  370. NULL
  371. };
  372. struct attribute_group zfcp_sysfs_adapter_attrs = {
  373. .attrs = zfcp_adapter_attrs,
  374. };
  375. static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
  376. struct device_attribute *attr,
  377. const char *buf, size_t count)
  378. {
  379. struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  380. u64 fcp_lun;
  381. int retval;
  382. if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
  383. return -EINVAL;
  384. retval = zfcp_unit_add(port, fcp_lun);
  385. if (retval)
  386. return retval;
  387. return count;
  388. }
  389. static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
  390. static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
  391. struct device_attribute *attr,
  392. const char *buf, size_t count)
  393. {
  394. struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  395. u64 fcp_lun;
  396. if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
  397. return -EINVAL;
  398. if (zfcp_unit_remove(port, fcp_lun))
  399. return -EINVAL;
  400. return count;
  401. }
  402. static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
  403. static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev,
  404. struct device_attribute *attr,
  405. char *buf)
  406. {
  407. struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
  408. struct zfcp_adapter *adapter = port->adapter;
  409. unsigned int status = atomic_read(&port->status);
  410. int i;
  411. if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
  412. 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
  413. 0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) ||
  414. 0 != (status & ZFCP_STATUS_PORT_LINK_TEST) ||
  415. 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
  416. 0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
  417. i = sprintf(buf, "unknown\n");
  418. else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY))
  419. i = sprintf(buf, "unsupported\n");
  420. else {
  421. i = zfcp_fsf_scnprint_fc_security(
  422. buf, PAGE_SIZE - 1, port->connection_info,
  423. ZFCP_FSF_PRINT_FMT_SINGLEITEM);
  424. i += scnprintf(buf + i, PAGE_SIZE - i, "\n");
  425. }
  426. return i;
  427. }
  428. static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO,
  429. zfcp_sysfs_port_fc_security_show,
  430. NULL);
  431. static struct attribute *zfcp_port_attrs[] = {
  432. &dev_attr_unit_add.attr,
  433. &dev_attr_unit_remove.attr,
  434. &dev_attr_port_failed.attr,
  435. &dev_attr_port_in_recovery.attr,
  436. &dev_attr_port_status.attr,
  437. &dev_attr_port_access_denied.attr,
  438. &dev_attr_port_fc_security.attr,
  439. NULL
  440. };
  441. static struct attribute_group zfcp_port_attr_group = {
  442. .attrs = zfcp_port_attrs,
  443. };
  444. const struct attribute_group *zfcp_port_attr_groups[] = {
  445. &zfcp_port_attr_group,
  446. NULL,
  447. };
  448. static struct attribute *zfcp_unit_attrs[] = {
  449. &dev_attr_unit_failed.attr,
  450. &dev_attr_unit_in_recovery.attr,
  451. &dev_attr_unit_status.attr,
  452. &dev_attr_unit_access_denied.attr,
  453. &dev_attr_unit_access_shared.attr,
  454. &dev_attr_unit_access_readonly.attr,
  455. NULL
  456. };
  457. static struct attribute_group zfcp_unit_attr_group = {
  458. .attrs = zfcp_unit_attrs,
  459. };
  460. const struct attribute_group *zfcp_unit_attr_groups[] = {
  461. &zfcp_unit_attr_group,
  462. NULL,
  463. };
  464. #define ZFCP_DEFINE_LATENCY_ATTR(_name) \
  465. static ssize_t \
  466. zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
  467. struct device_attribute *attr, \
  468. char *buf) { \
  469. struct scsi_device *sdev = to_scsi_device(dev); \
  470. struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
  471. struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
  472. struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
  473. unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
  474. \
  475. spin_lock_bh(&lat->lock); \
  476. fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
  477. fmin = lat->_name.fabric.min * adapter->timer_ticks; \
  478. fmax = lat->_name.fabric.max * adapter->timer_ticks; \
  479. csum = lat->_name.channel.sum * adapter->timer_ticks; \
  480. cmin = lat->_name.channel.min * adapter->timer_ticks; \
  481. cmax = lat->_name.channel.max * adapter->timer_ticks; \
  482. cc = lat->_name.counter; \
  483. spin_unlock_bh(&lat->lock); \
  484. \
  485. do_div(fsum, 1000); \
  486. do_div(fmin, 1000); \
  487. do_div(fmax, 1000); \
  488. do_div(csum, 1000); \
  489. do_div(cmin, 1000); \
  490. do_div(cmax, 1000); \
  491. \
  492. return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
  493. fmin, fmax, fsum, cmin, cmax, csum, cc); \
  494. } \
  495. static ssize_t \
  496. zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
  497. struct device_attribute *attr, \
  498. const char *buf, size_t count) \
  499. { \
  500. struct scsi_device *sdev = to_scsi_device(dev); \
  501. struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
  502. struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
  503. unsigned long flags; \
  504. \
  505. spin_lock_irqsave(&lat->lock, flags); \
  506. lat->_name.fabric.sum = 0; \
  507. lat->_name.fabric.min = 0xFFFFFFFF; \
  508. lat->_name.fabric.max = 0; \
  509. lat->_name.channel.sum = 0; \
  510. lat->_name.channel.min = 0xFFFFFFFF; \
  511. lat->_name.channel.max = 0; \
  512. lat->_name.counter = 0; \
  513. spin_unlock_irqrestore(&lat->lock, flags); \
  514. \
  515. return (ssize_t) count; \
  516. } \
  517. static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
  518. zfcp_sysfs_unit_##_name##_latency_show, \
  519. zfcp_sysfs_unit_##_name##_latency_store);
  520. ZFCP_DEFINE_LATENCY_ATTR(read);
  521. ZFCP_DEFINE_LATENCY_ATTR(write);
  522. ZFCP_DEFINE_LATENCY_ATTR(cmd);
  523. #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
  524. static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
  525. struct device_attribute *attr,\
  526. char *buf) \
  527. { \
  528. struct scsi_device *sdev = to_scsi_device(dev); \
  529. struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
  530. \
  531. return sprintf(buf, _format, _value); \
  532. } \
  533. static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
  534. ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
  535. dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
  536. ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
  537. (unsigned long long) zfcp_sdev->port->wwpn);
  538. static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
  539. struct device_attribute *attr,
  540. char *buf)
  541. {
  542. struct scsi_device *sdev = to_scsi_device(dev);
  543. return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
  544. }
  545. static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
  546. ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
  547. (atomic_read(&zfcp_sdev->status) &
  548. ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
  549. static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
  550. struct device_attribute *attr,
  551. char *buf)
  552. {
  553. struct scsi_device *sdev = to_scsi_device(dev);
  554. unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
  555. unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
  556. return sprintf(buf, "%d\n", failed);
  557. }
  558. static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
  559. struct device_attribute *attr,
  560. const char *buf, size_t count)
  561. {
  562. struct scsi_device *sdev = to_scsi_device(dev);
  563. unsigned long val;
  564. if (kstrtoul(buf, 0, &val) || val != 0)
  565. return -EINVAL;
  566. zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
  567. zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
  568. "syufai3");
  569. zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
  570. return count;
  571. }
  572. static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
  573. zfcp_sysfs_scsi_zfcp_failed_show,
  574. zfcp_sysfs_scsi_zfcp_failed_store);
  575. ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
  576. (atomic_read(&zfcp_sdev->status) &
  577. ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
  578. ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
  579. atomic_read(&zfcp_sdev->status));
  580. struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
  581. &dev_attr_fcp_lun,
  582. &dev_attr_wwpn,
  583. &dev_attr_hba_id,
  584. &dev_attr_read_latency,
  585. &dev_attr_write_latency,
  586. &dev_attr_cmd_latency,
  587. &dev_attr_zfcp_access_denied,
  588. &dev_attr_zfcp_failed,
  589. &dev_attr_zfcp_in_recovery,
  590. &dev_attr_zfcp_status,
  591. NULL
  592. };
  593. static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
  594. struct device_attribute *attr,
  595. char *buf)
  596. {
  597. struct Scsi_Host *scsi_host = dev_to_shost(dev);
  598. struct fsf_qtcb_bottom_port *qtcb_port;
  599. struct zfcp_adapter *adapter;
  600. int retval;
  601. adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
  602. if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
  603. return -EOPNOTSUPP;
  604. qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
  605. if (!qtcb_port)
  606. return -ENOMEM;
  607. retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
  608. if (retval == 0 || retval == -EAGAIN)
  609. retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
  610. qtcb_port->cb_util, qtcb_port->a_util);
  611. kfree(qtcb_port);
  612. return retval;
  613. }
  614. static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
  615. static int zfcp_sysfs_adapter_ex_config(struct device *dev,
  616. struct fsf_statistics_info *stat_inf)
  617. {
  618. struct Scsi_Host *scsi_host = dev_to_shost(dev);
  619. struct fsf_qtcb_bottom_config *qtcb_config;
  620. struct zfcp_adapter *adapter;
  621. int retval;
  622. adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
  623. if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
  624. return -EOPNOTSUPP;
  625. qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
  626. GFP_KERNEL);
  627. if (!qtcb_config)
  628. return -ENOMEM;
  629. retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
  630. if (retval == 0 || retval == -EAGAIN)
  631. *stat_inf = qtcb_config->stat_info;
  632. kfree(qtcb_config);
  633. return retval;
  634. }
  635. #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
  636. static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
  637. struct device_attribute *attr,\
  638. char *buf) \
  639. { \
  640. struct fsf_statistics_info stat_info; \
  641. int retval; \
  642. \
  643. retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
  644. if (retval) \
  645. return retval; \
  646. \
  647. return sprintf(buf, _format, ## _arg); \
  648. } \
  649. static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
  650. ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
  651. (unsigned long long) stat_info.input_req,
  652. (unsigned long long) stat_info.output_req,
  653. (unsigned long long) stat_info.control_req);
  654. ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
  655. (unsigned long long) stat_info.input_mb,
  656. (unsigned long long) stat_info.output_mb);
  657. ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
  658. (unsigned long long) stat_info.seconds_act);
  659. static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
  660. struct device_attribute *attr,
  661. char *buf)
  662. {
  663. struct Scsi_Host *scsi_host = class_to_shost(dev);
  664. struct zfcp_qdio *qdio =
  665. ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
  666. u64 util;
  667. spin_lock_bh(&qdio->stat_lock);
  668. util = qdio->req_q_util;
  669. spin_unlock_bh(&qdio->stat_lock);
  670. return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
  671. (unsigned long long)util);
  672. }
  673. static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
  674. struct device_attribute *zfcp_sysfs_shost_attrs[] = {
  675. &dev_attr_utilization,
  676. &dev_attr_requests,
  677. &dev_attr_megabytes,
  678. &dev_attr_seconds_active,
  679. &dev_attr_queue_full,
  680. NULL
  681. };
  682. static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show(
  683. struct device *dev, struct device_attribute *attr, char *buf)
  684. {
  685. struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev));
  686. struct zfcp_diag_header *diag_hdr;
  687. struct fc_els_flogi *nsp;
  688. ssize_t rc = -ENOLINK;
  689. unsigned long flags;
  690. unsigned int status;
  691. if (!adapter)
  692. return -ENODEV;
  693. status = atomic_read(&adapter->status);
  694. if (0 == (status & ZFCP_STATUS_COMMON_OPEN) ||
  695. 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) ||
  696. 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED))
  697. goto out;
  698. diag_hdr = &adapter->diagnostics->config_data.header;
  699. rc = zfcp_diag_update_buffer_limited(
  700. adapter, diag_hdr, zfcp_diag_update_config_data_buffer);
  701. if (rc != 0)
  702. goto out;
  703. spin_lock_irqsave(&diag_hdr->access_lock, flags);
  704. /* nport_serv_param doesn't contain the ELS_Command code */
  705. nsp = (struct fc_els_flogi *)((unsigned long)
  706. adapter->diagnostics->config_data
  707. .data.nport_serv_param -
  708. sizeof(u32));
  709. rc = scnprintf(buf, 5 + 2, "%hu\n",
  710. be16_to_cpu(nsp->fl_csp.sp_bb_cred));
  711. spin_unlock_irqrestore(&diag_hdr->access_lock, flags);
  712. out:
  713. zfcp_ccw_adapter_put(adapter);
  714. return rc;
  715. }
  716. static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400,
  717. zfcp_sysfs_adapter_diag_b2b_credit_show, NULL);
  718. #define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \
  719. static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \
  720. struct device *dev, struct device_attribute *attr, char *buf) \
  721. { \
  722. struct zfcp_adapter *const adapter = \
  723. zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \
  724. struct zfcp_diag_header *diag_hdr; \
  725. ssize_t rc = -ENOLINK; \
  726. unsigned long flags; \
  727. unsigned int status; \
  728. \
  729. if (!adapter) \
  730. return -ENODEV; \
  731. \
  732. status = atomic_read(&adapter->status); \
  733. if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \
  734. 0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \
  735. 0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \
  736. goto out; \
  737. \
  738. if (!zfcp_diag_support_sfp(adapter)) { \
  739. rc = -EOPNOTSUPP; \
  740. goto out; \
  741. } \
  742. \
  743. diag_hdr = &adapter->diagnostics->port_data.header; \
  744. \
  745. rc = zfcp_diag_update_buffer_limited( \
  746. adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \
  747. if (rc != 0) \
  748. goto out; \
  749. \
  750. spin_lock_irqsave(&diag_hdr->access_lock, flags); \
  751. rc = scnprintf( \
  752. buf, (_prtsize) + 2, _prtfmt "\n", \
  753. adapter->diagnostics->port_data.data._qtcb_member); \
  754. spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \
  755. \
  756. out: \
  757. zfcp_ccw_adapter_put(adapter); \
  758. return rc; \
  759. } \
  760. static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \
  761. zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL)
  762. ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd");
  763. ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu");
  764. ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu");
  765. ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu");
  766. ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu");
  767. ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu");
  768. ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu");
  769. ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu");
  770. ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu");
  771. ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu");
  772. static struct attribute *zfcp_sysfs_diag_attrs[] = {
  773. &dev_attr_adapter_diag_sfp_temperature.attr,
  774. &dev_attr_adapter_diag_sfp_vcc.attr,
  775. &dev_attr_adapter_diag_sfp_tx_bias.attr,
  776. &dev_attr_adapter_diag_sfp_tx_power.attr,
  777. &dev_attr_adapter_diag_sfp_rx_power.attr,
  778. &dev_attr_adapter_diag_sfp_port_tx_type.attr,
  779. &dev_attr_adapter_diag_sfp_optical_port.attr,
  780. &dev_attr_adapter_diag_sfp_sfp_invalid.attr,
  781. &dev_attr_adapter_diag_sfp_connector_type.attr,
  782. &dev_attr_adapter_diag_sfp_fec_active.attr,
  783. &dev_attr_adapter_diag_b2b_credit.attr,
  784. NULL,
  785. };
  786. const struct attribute_group zfcp_sysfs_diag_attr_group = {
  787. .name = "diagnostics",
  788. .attrs = zfcp_sysfs_diag_attrs,
  789. };