1 // SPDX-License-Identifier: GPL-2.0
44 MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
78 	flush_work(&port->rport_work);  in zfcp_init_device_configure()
81 	put_device(&port->dev);  in zfcp_init_device_configure()
86 	put_device(&cdev->dev);  in zfcp_init_device_configure()
127 	int retval = -ENOMEM;  in zfcp_module_init()
183  * zfcp_get_port_by_wwpn - find port in port list of adapter by wwpn
195 	read_lock_irqsave(&adapter->port_list_lock, flags);  in zfcp_get_port_by_wwpn()
196 	list_for_each_entry(port, &adapter->port_list, list)  in zfcp_get_port_by_wwpn()
197 		if (port->wwpn == wwpn) {  in zfcp_get_port_by_wwpn()
198 			if (!get_device(&port->dev))  in zfcp_get_port_by_wwpn()
200 			read_unlock_irqrestore(&adapter->port_list_lock, flags);  in zfcp_get_port_by_wwpn()
203 	read_unlock_irqrestore(&adapter->port_list_lock, flags);  in zfcp_get_port_by_wwpn()
209 	adapter->pool.erp_req =  in zfcp_allocate_low_mem_buffers()
211 	if (!adapter->pool.erp_req)  in zfcp_allocate_low_mem_buffers()
212 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
214 	adapter->pool.gid_pn_req =  in zfcp_allocate_low_mem_buffers()
216 	if (!adapter->pool.gid_pn_req)  in zfcp_allocate_low_mem_buffers()
217 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
219 	adapter->pool.scsi_req =  in zfcp_allocate_low_mem_buffers()
221 	if (!adapter->pool.scsi_req)  in zfcp_allocate_low_mem_buffers()
222 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
224 	adapter->pool.scsi_abort =  in zfcp_allocate_low_mem_buffers()
226 	if (!adapter->pool.scsi_abort)  in zfcp_allocate_low_mem_buffers()
227 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
229 	adapter->pool.status_read_req =  in zfcp_allocate_low_mem_buffers()
232 	if (!adapter->pool.status_read_req)  in zfcp_allocate_low_mem_buffers()
233 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
235 	adapter->pool.qtcb_pool =  in zfcp_allocate_low_mem_buffers()
237 	if (!adapter->pool.qtcb_pool)  in zfcp_allocate_low_mem_buffers()
238 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
241 	adapter->pool.sr_data =  in zfcp_allocate_low_mem_buffers()
243 	if (!adapter->pool.sr_data)  in zfcp_allocate_low_mem_buffers()
244 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
246 	adapter->pool.gid_pn =  in zfcp_allocate_low_mem_buffers()
248 	if (!adapter->pool.gid_pn)  in zfcp_allocate_low_mem_buffers()
249 		return -ENOMEM;  in zfcp_allocate_low_mem_buffers()
256 	mempool_destroy(adapter->pool.erp_req);  in zfcp_free_low_mem_buffers()
257 	mempool_destroy(adapter->pool.scsi_req);  in zfcp_free_low_mem_buffers()
258 	mempool_destroy(adapter->pool.scsi_abort);  in zfcp_free_low_mem_buffers()
259 	mempool_destroy(adapter->pool.qtcb_pool);  in zfcp_free_low_mem_buffers()
260 	mempool_destroy(adapter->pool.status_read_req);  in zfcp_free_low_mem_buffers()
261 	mempool_destroy(adapter->pool.sr_data);  in zfcp_free_low_mem_buffers()
262 	mempool_destroy(adapter->pool.gid_pn);  in zfcp_free_low_mem_buffers()
266  * zfcp_status_read_refill - refill the long running status_read_requests
276 	while (atomic_add_unless(&adapter->stat_miss, -1, 0))  in zfcp_status_read_refill()
277 		if (zfcp_fsf_status_read(adapter->qdio)) {  in zfcp_status_read_refill()
278 			atomic_inc(&adapter->stat_miss); /* undo add -1 */  in zfcp_status_read_refill()
279 			if (atomic_read(&adapter->stat_miss) >=  in zfcp_status_read_refill()
280 			    adapter->stat_read_buf_num) {  in zfcp_status_read_refill()
300 	zfcp_fsf_exchange_config_data_sync(adapter->qdio, NULL);  in zfcp_version_change_lost_work()
309 		   dev_name(&adapter->ccw_device->dev),  in zfcp_print_sl()
310 		   adapter->fsf_lic_version);  in zfcp_print_sl()
318 		 dev_name(&adapter->ccw_device->dev));  in zfcp_setup_adapter_work_queue()
319 	adapter->work_queue = alloc_ordered_workqueue(name, WQ_MEM_RECLAIM);  in zfcp_setup_adapter_work_queue()
321 	if (adapter->work_queue)  in zfcp_setup_adapter_work_queue()
323 	return -ENOMEM;  in zfcp_setup_adapter_work_queue()
328 	if (adapter->work_queue)  in zfcp_destroy_adapter_work_queue()
329 		destroy_workqueue(adapter->work_queue);  in zfcp_destroy_adapter_work_queue()
330 	adapter->work_queue = NULL;  in zfcp_destroy_adapter_work_queue()
335  * zfcp_adapter_enqueue - enqueue a new adapter to the list
341  * Proc-fs entries are also created.
347 	if (!get_device(&ccw_device->dev))  in zfcp_adapter_enqueue()
348 		return ERR_PTR(-ENODEV);  in zfcp_adapter_enqueue()
352 		put_device(&ccw_device->dev);  in zfcp_adapter_enqueue()
353 		return ERR_PTR(-ENOMEM);  in zfcp_adapter_enqueue()
356 	kref_init(&adapter->ref);  in zfcp_adapter_enqueue()
358 	ccw_device->handler = NULL;  in zfcp_adapter_enqueue()
359 	adapter->ccw_device = ccw_device;  in zfcp_adapter_enqueue()
361 	INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);  in zfcp_adapter_enqueue()
362 	INIT_DELAYED_WORK(&adapter->scan_work, zfcp_fc_scan_ports);  in zfcp_adapter_enqueue()
363 	INIT_WORK(&adapter->ns_up_work, zfcp_fc_sym_name_update);  in zfcp_adapter_enqueue()
364 	INIT_WORK(&adapter->version_change_lost_work,  in zfcp_adapter_enqueue()
367 	adapter->next_port_scan = jiffies;  in zfcp_adapter_enqueue()
369 	adapter->erp_action.adapter = adapter;  in zfcp_adapter_enqueue()
380 	adapter->req_list = zfcp_reqlist_alloc();  in zfcp_adapter_enqueue()
381 	if (!adapter->req_list)  in zfcp_adapter_enqueue()
393 	rwlock_init(&adapter->port_list_lock);  in zfcp_adapter_enqueue()
394 	INIT_LIST_HEAD(&adapter->port_list);  in zfcp_adapter_enqueue()
396 	INIT_LIST_HEAD(&adapter->events.list);  in zfcp_adapter_enqueue()
397 	INIT_WORK(&adapter->events.work, zfcp_fc_post_event);  in zfcp_adapter_enqueue()
398 	spin_lock_init(&adapter->events.list_lock);  in zfcp_adapter_enqueue()
400 	init_waitqueue_head(&adapter->erp_ready_wq);  in zfcp_adapter_enqueue()
401 	init_waitqueue_head(&adapter->erp_done_wqh);  in zfcp_adapter_enqueue()
403 	INIT_LIST_HEAD(&adapter->erp_ready_head);  in zfcp_adapter_enqueue()
404 	INIT_LIST_HEAD(&adapter->erp_running_head);  in zfcp_adapter_enqueue()
406 	rwlock_init(&adapter->erp_lock);  in zfcp_adapter_enqueue()
407 	rwlock_init(&adapter->abort_lock);  in zfcp_adapter_enqueue()
412 	adapter->service_level.seq_print = zfcp_print_sl;  in zfcp_adapter_enqueue()
414 	dev_set_drvdata(&ccw_device->dev, adapter);  in zfcp_adapter_enqueue()
416 	if (device_add_groups(&ccw_device->dev, zfcp_sysfs_adapter_attr_groups))  in zfcp_adapter_enqueue()
419 	/* report size limit per scatter-gather segment */  in zfcp_adapter_enqueue()
420 	adapter->ccw_device->dev.dma_parms = &adapter->dma_parms;  in zfcp_adapter_enqueue()
422 	adapter->stat_read_buf_num = FSF_STATUS_READS_RECOM;  in zfcp_adapter_enqueue()
428 	/* TODO: make this more fine-granular */  in zfcp_adapter_enqueue()
429 	cancel_delayed_work_sync(&adapter->scan_work);  in zfcp_adapter_enqueue()
430 	cancel_work_sync(&adapter->stat_work);  in zfcp_adapter_enqueue()
431 	cancel_work_sync(&adapter->ns_up_work);  in zfcp_adapter_enqueue()
432 	cancel_work_sync(&adapter->version_change_lost_work);  in zfcp_adapter_enqueue()
435 	zfcp_fc_wka_ports_force_offline(adapter->gs);  in zfcp_adapter_enqueue()
440 	zfcp_qdio_destroy(adapter->qdio);  in zfcp_adapter_enqueue()
443 	return ERR_PTR(-ENOMEM);  in zfcp_adapter_enqueue()
448 	struct ccw_device *cdev = adapter->ccw_device;  in zfcp_adapter_unregister()
450 	cancel_delayed_work_sync(&adapter->scan_work);  in zfcp_adapter_unregister()
451 	cancel_work_sync(&adapter->stat_work);  in zfcp_adapter_unregister()
452 	cancel_work_sync(&adapter->ns_up_work);  in zfcp_adapter_unregister()
453 	cancel_work_sync(&adapter->version_change_lost_work);  in zfcp_adapter_unregister()
456 	zfcp_fc_wka_ports_force_offline(adapter->gs);  in zfcp_adapter_unregister()
458 	device_remove_groups(&cdev->dev, zfcp_sysfs_adapter_attr_groups);  in zfcp_adapter_unregister()
462 	zfcp_qdio_destroy(adapter->qdio);  in zfcp_adapter_unregister()
468  * zfcp_adapter_release - remove the adapter from the resource list
476 	struct ccw_device *cdev = adapter->ccw_device;  in zfcp_adapter_release()
478 	dev_set_drvdata(&adapter->ccw_device->dev, NULL);  in zfcp_adapter_release()
482 	kfree(adapter->req_list);  in zfcp_adapter_release()
483 	kfree(adapter->fc_stats);  in zfcp_adapter_release()
484 	kfree(adapter->stats_reset_data);  in zfcp_adapter_release()
486 	put_device(&cdev->dev);  in zfcp_adapter_release()
493 	zfcp_ccw_adapter_put(port->adapter);  in zfcp_port_release()
498  * zfcp_port_enqueue - enqueue port to port list of adapter
513 	int retval = -ENOMEM;  in zfcp_port_enqueue()
515 	kref_get(&adapter->ref);  in zfcp_port_enqueue()
519 		put_device(&port->dev);  in zfcp_port_enqueue()
520 		retval = -EEXIST;  in zfcp_port_enqueue()
528 	rwlock_init(&port->unit_list_lock);  in zfcp_port_enqueue()
529 	INIT_LIST_HEAD(&port->unit_list);  in zfcp_port_enqueue()
530 	atomic_set(&port->units, 0);  in zfcp_port_enqueue()
532 	INIT_WORK(&port->gid_pn_work, zfcp_fc_port_did_lookup);  in zfcp_port_enqueue()
533 	INIT_WORK(&port->test_link_work, zfcp_fc_link_test_work);  in zfcp_port_enqueue()
534 	INIT_WORK(&port->rport_work, zfcp_scsi_rport_work);  in zfcp_port_enqueue()
536 	port->adapter = adapter;  in zfcp_port_enqueue()
537 	port->d_id = d_id;  in zfcp_port_enqueue()
538 	port->wwpn = wwpn;  in zfcp_port_enqueue()
539 	port->rport_task = RPORT_NONE;  in zfcp_port_enqueue()
540 	port->dev.parent = &adapter->ccw_device->dev;  in zfcp_port_enqueue()
541 	port->dev.groups = zfcp_port_attr_groups;  in zfcp_port_enqueue()
542 	port->dev.release = zfcp_port_release;  in zfcp_port_enqueue()
544 	port->erp_action.adapter = adapter;  in zfcp_port_enqueue()
545 	port->erp_action.port = port;  in zfcp_port_enqueue()
547 	if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) {  in zfcp_port_enqueue()
551 	retval = -EINVAL;  in zfcp_port_enqueue()
553 	if (device_register(&port->dev)) {  in zfcp_port_enqueue()
554 		put_device(&port->dev);  in zfcp_port_enqueue()
558 	write_lock_irq(&adapter->port_list_lock);  in zfcp_port_enqueue()
559 	list_add_tail(&port->list, &adapter->port_list);  in zfcp_port_enqueue()
560 	write_unlock_irq(&adapter->port_list_lock);  in zfcp_port_enqueue()
562 	atomic_or(status | ZFCP_STATUS_COMMON_RUNNING, &port->status);  in zfcp_port_enqueue()