26  * (CRQ), which is just a buffer of 16 byte entries in the receiver's 
38  * payload of a CRQ message.  The server DMAs the SRP IU and processes it,
41  * and sends a CRQ message back to inform the client that the request has
109 static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
116  * ibmvscsi_handle_event: - Interrupt handler for crq events
133  * ibmvscsi_release_crq_queue() - Deallocates data and unregisters CRQ
139  * the crq with the hypervisor.
165  * entried in the CRQ.
169 	struct viosrp_crq *crq;  in crq_queue_next_crq()  local
173 	crq = &queue->msgs[queue->cur];  in crq_queue_next_crq()
174 	if (crq->valid != VIOSRP_CRQ_FREE) {  in crq_queue_next_crq()
179 		 * other bits of the CRQ entry  in crq_queue_next_crq()
183 		crq = NULL;  in crq_queue_next_crq()
186 	return crq;  in crq_queue_next_crq()
190  * ibmvscsi_send_crq: - Send a CRQ
216 	struct viosrp_crq *crq;  in ibmvscsi_task()  local
220 		/* Pull all the valid messages off the CRQ */  in ibmvscsi_task()
221 		while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {  in ibmvscsi_task()
222 			ibmvscsi_handle_crq(crq, hostdata);  in ibmvscsi_task()
223 			crq->valid = VIOSRP_CRQ_FREE;  in ibmvscsi_task()
228 		crq = crq_queue_next_crq(&hostdata->queue);  in ibmvscsi_task()
229 		if (crq != NULL) {  in ibmvscsi_task()
231 			ibmvscsi_handle_crq(crq, hostdata);  in ibmvscsi_task()
232 			crq->valid = VIOSRP_CRQ_FREE;  in ibmvscsi_task()
280  * ibmvscsi_reset_crq_queue() - resets a crq after a failure
290 	/* Close the CRQ */  in ibmvscsi_reset_crq_queue()
311 		dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc);  in ibmvscsi_reset_crq_queue()
317  * ibmvscsi_init_crq_queue() - Initializes and registers CRQ with hypervisor
323  * the crq with the hypervisor.
408  * ibmvscsi_reenable_crq_queue() - reenables a crq after
420 	/* Re-enable the CRQ */  in ibmvscsi_reenable_crq_queue()
465 		memset(&evt->crq, 0x00, sizeof(evt->crq));  in initialize_event_pool()
467 		evt->crq.valid = VIOSRP_CRQ_CMD_RSP;  in initialize_event_pool()
468 		evt->crq.IU_length = cpu_to_be16(sizeof(*evt->xfer_iu));  in initialize_event_pool()
469 		evt->crq.IU_data_ptr = cpu_to_be64(pool->iu_token +  in initialize_event_pool()
580  * @timeout:    timeout value set in the CRQ
590 	evt_struct->crq.format = format;  in init_event_struct()
591 	evt_struct->crq.timeout = cpu_to_be16(timeout);  in init_event_struct()
801 		} else if (evt->done && evt->crq.format != VIOSRP_MAD_FORMAT &&  in purge_requests()
874 	__be64 *crq_as_u64 = (__be64 *)&evt_struct->crq;  in ibmvscsi_send_srp_event()
885 	if (evt_struct->crq.format == VIOSRP_SRP_FORMAT) {  in ibmvscsi_send_srp_event()
950 		 * Firmware will send a CRQ with a transport event (0xFF) to  in ibmvscsi_send_srp_event()
1089 			cpu_to_be64(be64_to_cpu(evt_struct->crq.IU_data_ptr) +  in ibmvscsi_queuecommand_lck()
1761  * ibmvscsi_handle_crq: - Handles and frees received events in the CRQ
1762  * @crq:	Command/Response queue
1766 static void ibmvscsi_handle_crq(struct viosrp_crq *crq,  in ibmvscsi_handle_crq()  argument
1773 			(__force struct srp_event_struct *)crq->IU_data_ptr;  in ibmvscsi_handle_crq()
1774 	switch (crq->valid) {  in ibmvscsi_handle_crq()
1776 		switch (crq->format) {  in ibmvscsi_handle_crq()
1796 			dev_err(hostdata->dev, "unknown crq message type: %d\n", crq->format);  in ibmvscsi_handle_crq()
1802 		if (crq->format == 0x06) {  in ibmvscsi_handle_crq()
1811 				crq->format);  in ibmvscsi_handle_crq()
1819 			crq->valid);  in ibmvscsi_handle_crq()
1839 	if (crq->format == VIOSRP_SRP_FORMAT)  in ibmvscsi_handle_crq()
1845 	if ((crq->status != VIOSRP_OK && crq->status != VIOSRP_OK2) && evt_struct->cmnd)  in ibmvscsi_handle_crq()
2266 		dev_err(&vdev->dev, "couldn't initialize crq. rc=%d\n", rc);  in ibmvscsi_probe()