コード例 #1
0
ファイル: tw_cl_misc.c プロジェクト: coyizumi/cs111
/*
 * Function name:	tw_cli_find_response
 * Description:		Find a particular response in the ctlr response queue.
 *
 * Input:		ctlr	-- ptr to per ctlr structure
 *			req_id	-- request id of the response to look for
 * Output:		None
 * Return value:	0	-- success
 *			non-zero-- failure
 */
TW_INT32
tw_cli_find_response(struct tw_cli_ctlr_context *ctlr, TW_INT32 req_id)
{
	TW_UINT32	resp;
	TW_INT32	resp_id;
	TW_UINT32	status_reg;

	tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");

	for (;;) {
		status_reg = TW_CLI_READ_STATUS_REGISTER(ctlr->ctlr_handle);

		if (status_reg & TWA_STATUS_RESPONSE_QUEUE_EMPTY)
			return(TW_OSL_ENOTTY); /* no more response queue entries */

		if (ctlr->device_id == TW_CL_DEVICE_ID_9K) {
			resp = TW_CLI_READ_RESPONSE_QUEUE(ctlr->ctlr_handle);
			resp_id = GET_RESP_ID(resp);
		} else {
			resp = TW_CLI_READ_LARGE_RESPONSE_QUEUE(
				ctlr->ctlr_handle);
			resp_id = GET_LARGE_RESP_ID(resp);
		}
		if (resp_id == req_id)
			return(TW_OSL_ESUCCESS); /* found the req_id */
	}
}
コード例 #2
0
/*
 * Function name:	tw_cli_process_resp_intr
 * Description:		Looks for cmd completions from fw; queues cmds completed
 *			by fw into complete queue.
 *
 * Input:		ctlr	-- ptr to CL internal ctlr context
 * Output:		None
 * Return value:	0	-- no ctlr error
 *			non-zero-- ctlr error
 */
TW_INT32
tw_cli_process_resp_intr(struct tw_cli_ctlr_context *ctlr)
{
	TW_UINT32			resp;
	struct tw_cli_req_context	*req;
	TW_INT32			error;
	TW_UINT32			status_reg;
    
	tw_cli_dbg_printf(10, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");

	for (;;) {
		status_reg = TW_CLI_READ_STATUS_REGISTER(ctlr->ctlr_handle);
		if ((error = tw_cli_check_ctlr_state(ctlr, status_reg)))
			break;
		if (status_reg & TWA_STATUS_RESPONSE_QUEUE_EMPTY) {
			tw_cli_dbg_printf(7, ctlr->ctlr_handle,
				tw_osl_cur_func(), "Response queue empty");
			break;
		}

		/* Response queue is not empty. */
		resp = TW_CLI_READ_RESPONSE_QUEUE(ctlr->ctlr_handle);
		{
			req = &(ctlr->req_ctxt_buf[GET_RESP_ID(resp)]);
		}

		if (req->state != TW_CLI_REQ_STATE_BUSY) {
			tw_cl_create_event(ctlr->ctlr_handle, TW_CL_FALSE,
				TW_CL_MESSAGE_SOURCE_COMMON_LAYER_ERROR,
				0x1201, 0x1, TW_CL_SEVERITY_ERROR_STRING,
				"Unposted command completed!!",
				"request = %p, status = %d",
				req, req->state);
#ifdef TW_OSL_DEBUG
			tw_cl_print_ctlr_stats(ctlr->ctlr_handle);
#endif /* TW_OSL_DEBUG */
			tw_cl_reset_ctlr(ctlr->ctlr_handle);
			return(TW_OSL_EIO);
		}

		/*
		 * Remove the request from the busy queue, mark it as complete,
		 * and enqueue it in the complete queue.
		 */
		tw_cli_req_q_remove_item(req, TW_CLI_BUSY_Q);
		req->state = TW_CLI_REQ_STATE_COMPLETE;
		tw_cli_req_q_insert_tail(req, TW_CLI_COMPLETE_Q);

	}

	/* Complete this, and other requests in the complete queue. */
	tw_cli_process_complete_queue(ctlr);
	
	return(error);
}
コード例 #3
0
ファイル: tw_cl_misc.c プロジェクト: coyizumi/cs111
/*
 * Function name:	tw_cli_drain_response_queue
 * Description:		Drain the controller response queue.
 *
 * Input:		ctlr	-- ptr to per ctlr structure
 * Output:		None
 * Return value:	0	-- success
 *			non-zero-- failure
 */
TW_INT32
tw_cli_drain_response_queue(struct tw_cli_ctlr_context *ctlr)
{
	TW_UINT32	resp;
	TW_UINT32	status_reg;

	tw_cli_dbg_printf(4, ctlr->ctlr_handle, tw_osl_cur_func(), "entered");

	for (;;) {
		status_reg = TW_CLI_READ_STATUS_REGISTER(ctlr->ctlr_handle);

		if (status_reg & TWA_STATUS_RESPONSE_QUEUE_EMPTY)
			return(TW_OSL_ESUCCESS); /* no more response queue entries */

		resp = TW_CLI_READ_RESPONSE_QUEUE(ctlr->ctlr_handle);
	}
}