/** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device * * Returns: struct zfcp_adapter* * Enqueues an adapter at the end of the adapter list in the driver data. * All adapter internal structures are set up. * Proc-fs entries are also created. */ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) { struct zfcp_adapter *adapter; if (!get_device(&ccw_device->dev)) return ERR_PTR(-ENODEV); adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL); if (!adapter) { put_device(&ccw_device->dev); return ERR_PTR(-ENOMEM); } kref_init(&adapter->ref); ccw_device->handler = NULL; adapter->ccw_device = ccw_device; INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); INIT_WORK(&adapter->scan_work, zfcp_fc_scan_ports); INIT_WORK(&adapter->ns_up_work, zfcp_fc_sym_name_update); if (zfcp_qdio_setup(adapter)) goto failed; if (zfcp_allocate_low_mem_buffers(adapter)) goto failed; adapter->req_list = zfcp_reqlist_alloc(); if (!adapter->req_list) goto failed; if (zfcp_dbf_adapter_register(adapter)) goto failed; if (zfcp_setup_adapter_work_queue(adapter)) goto failed; if (zfcp_fc_gs_setup(adapter)) goto failed; rwlock_init(&adapter->port_list_lock); INIT_LIST_HEAD(&adapter->port_list); INIT_LIST_HEAD(&adapter->events.list); INIT_WORK(&adapter->events.work, zfcp_fc_post_event); spin_lock_init(&adapter->events.list_lock); init_waitqueue_head(&adapter->erp_ready_wq); init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->erp_ready_head); INIT_LIST_HEAD(&adapter->erp_running_head); rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); if (zfcp_erp_thread_setup(adapter)) goto failed; adapter->service_level.seq_print = zfcp_print_sl; dev_set_drvdata(&ccw_device->dev, adapter); if (sysfs_create_group(&ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs)) goto failed; /* report size limit per scatter-gather segment */ adapter->dma_parms.max_segment_size = ZFCP_QDIO_SBALE_LEN; adapter->ccw_device->dev.dma_parms = &adapter->dma_parms; adapter->stat_read_buf_num = FSF_STATUS_READS_RECOM; if (!zfcp_scsi_adapter_register(adapter)) return adapter; failed: zfcp_adapter_unregister(adapter); return ERR_PTR(-ENOMEM); }
/** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device * * Returns: 0 if a new adapter was successfully enqueued * -ENOMEM if alloc failed * Enqueues an adapter at the end of the adapter list in the driver data. * All adapter internal structures are set up. * Proc-fs entries are also created. * locks: config_sema must be held to serialise changes to the adapter list */ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) { struct zfcp_adapter *adapter; /* * Note: It is safe to release the list_lock, as any list changes * are protected by the config_sema, which must be held to get here */ adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL); if (!adapter) return -ENOMEM; ccw_device->handler = NULL; adapter->ccw_device = ccw_device; atomic_set(&adapter->refcount, 0); if (zfcp_qdio_allocate(adapter)) goto qdio_allocate_failed; if (zfcp_allocate_low_mem_buffers(adapter)) goto failed_low_mem_buffers; if (zfcp_reqlist_alloc(adapter)) goto failed_low_mem_buffers; if (zfcp_adapter_debug_register(adapter)) goto debug_register_failed; init_waitqueue_head(&adapter->remove_wq); init_waitqueue_head(&adapter->erp_thread_wqh); init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->port_list_head); INIT_LIST_HEAD(&adapter->erp_ready_head); INIT_LIST_HEAD(&adapter->erp_running_head); spin_lock_init(&adapter->req_list_lock); spin_lock_init(&adapter->hba_dbf_lock); spin_lock_init(&adapter->san_dbf_lock); spin_lock_init(&adapter->scsi_dbf_lock); spin_lock_init(&adapter->rec_dbf_lock); spin_lock_init(&adapter->req_q_lock); rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); sema_init(&adapter->erp_ready_sem, 0); INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later); adapter->service_level.seq_print = zfcp_print_sl; /* mark adapter unusable as long as sysfs registration is not complete */ atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); dev_set_drvdata(&ccw_device->dev, adapter); if (sysfs_create_group(&ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs)) goto sysfs_failed; atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); zfcp_fc_nameserver_init(adapter); if (!zfcp_adapter_scsi_register(adapter)) return 0; sysfs_failed: zfcp_adapter_debug_unregister(adapter); debug_register_failed: dev_set_drvdata(&ccw_device->dev, NULL); kfree(adapter->req_list); failed_low_mem_buffers: zfcp_free_low_mem_buffers(adapter); qdio_allocate_failed: zfcp_qdio_free(adapter); kfree(adapter); return -ENOMEM; }
/** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device * * Returns: struct zfcp_adapter* * Enqueues an adapter at the end of the adapter list in the driver data. * All adapter internal structures are set up. * Proc-fs entries are also created. */ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) { struct zfcp_adapter *adapter; if (!get_device(&ccw_device->dev)) return ERR_PTR(-ENODEV); adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL); if (!adapter) { put_device(&ccw_device->dev); return ERR_PTR(-ENOMEM); } kref_init(&adapter->ref); ccw_device->handler = NULL; adapter->ccw_device = ccw_device; INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler); INIT_WORK(&adapter->scan_work, zfcp_fc_scan_ports); if (zfcp_qdio_setup(adapter)) goto failed; if (zfcp_allocate_low_mem_buffers(adapter)) goto failed; adapter->req_list = zfcp_reqlist_alloc(); if (!adapter->req_list) goto failed; if (zfcp_dbf_adapter_register(adapter)) goto failed; if (zfcp_setup_adapter_work_queue(adapter)) goto failed; if (zfcp_fc_gs_setup(adapter)) goto failed; rwlock_init(&adapter->port_list_lock); INIT_LIST_HEAD(&adapter->port_list); init_waitqueue_head(&adapter->erp_ready_wq); init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->erp_ready_head); INIT_LIST_HEAD(&adapter->erp_running_head); rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); if (zfcp_erp_thread_setup(adapter)) goto failed; adapter->service_level.seq_print = zfcp_print_sl; dev_set_drvdata(&ccw_device->dev, adapter); if (sysfs_create_group(&ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs)) goto failed; if (!zfcp_adapter_scsi_register(adapter)) return adapter; failed: zfcp_adapter_unregister(adapter); return ERR_PTR(-ENOMEM); }