-/*
- * function: zfcp_qdio_cleanup
- *
- * purpose: cleans up QDIO operation for the specified adapter
- *
- * returns: 0 - successful cleanup
- * !0 - failed cleanup
- */
-int
-zfcp_erp_adapter_strategy_close_qdio(struct zfcp_erp_action *erp_action)
-{
- int retval = ZFCP_ERP_SUCCEEDED;
- int first_used;
- int used_count;
- struct zfcp_adapter *adapter = erp_action->adapter;
-
- if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
- ZFCP_LOG_DEBUG("error: attempt to shut down inactive QDIO "
- "queues on adapter %s\n",
- zfcp_get_busid_by_adapter(adapter));
- retval = ZFCP_ERP_FAILED;
- goto out;
- }
-
- /*
- * Get queue_lock and clear QDIOUP flag. Thus it's guaranteed that
- * do_QDIO won't be called while qdio_shutdown is in progress.
- */
-
- write_lock_irq(&adapter->request_queue.queue_lock);
- atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
- write_unlock_irq(&adapter->request_queue.queue_lock);
-
- debug_text_event(adapter->erp_dbf, 3, "qdio_down2a");
- while (qdio_shutdown(adapter->ccw_device,
- QDIO_FLAG_CLEANUP_USING_CLEAR) == -EINPROGRESS)
- msleep(1000);
- debug_text_event(adapter->erp_dbf, 3, "qdio_down2b");
-
- /*
- * First we had to stop QDIO operation.
- * Now it is safe to take the following actions.
- */
-
- /* Cleanup only necessary when there are unacknowledged buffers */
- if (atomic_read(&adapter->request_queue.free_count)
- < QDIO_MAX_BUFFERS_PER_Q) {
- first_used = (adapter->request_queue.free_index +
- atomic_read(&adapter->request_queue.free_count))
- % QDIO_MAX_BUFFERS_PER_Q;
- used_count = QDIO_MAX_BUFFERS_PER_Q -
- atomic_read(&adapter->request_queue.free_count);
- zfcp_qdio_zero_sbals(adapter->request_queue.buffer,
- first_used, used_count);
- }
- adapter->response_queue.free_index = 0;
- atomic_set(&adapter->response_queue.free_count, 0);
- adapter->request_queue.free_index = 0;
- atomic_set(&adapter->request_queue.free_count, 0);
- adapter->request_queue.distance_from_int = 0;
- out:
- return retval;
-}