drivers/scsi/isci/core/scic_sds_stp_pio_request.h

/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Intel Corporation nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
#define _SCIC_SDS_SATA_PIO_REQUEST_H_

#include "sci_base_state.h"
#include "scic_sds_request.h"
#include "scu_task_context.h"

/**
 * This file contains the structures and constants for SATA PIO requests.
 *
 *
 */


/**
 *
 *
 * This is the enumeration of the SATA PIO DATA IN started substate machine.
 */
enum _SCIC_SDS_STP_REQUEST_STARTED_PIO_SUBSTATES {
	/**
	 * While in this state the IO request object is waiting for the TC completion
	 * notification for the H2D Register FIS
	 */
	SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_H2D_COMPLETION_SUBSTATE,

	/**
	 * While in this state the IO request object is waiting for either a PIO Setup
	 * FIS or a D2H register FIS.  The type of frame received is based on the
	 * result of the prior frame and line conditions.
	 */
	SCIC_SDS_STP_REQUEST_STARTED_PIO_AWAIT_FRAME_SUBSTATE,

	/**
	 * While in this state the IO request object is waiting for a DATA frame from
	 * the device.
	 */
	SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_IN_AWAIT_DATA_SUBSTATE,

	/**
	 * While in this state the IO request object is waiting to transmit the next data
	 * frame to the device.
	 */
	SCIC_SDS_STP_REQUEST_STARTED_PIO_DATA_OUT_TRANSMIT_DATA_SUBSTATE,
};


/* --------------------------------------------------------------------------- */

extern const struct scic_sds_io_request_state_handler scic_sds_stp_request_started_pio_substate_handler_table[];

extern const struct sci_base_state scic_sds_stp_request_started_pio_substate_table[];

/* --------------------------------------------------------------------------- */

struct scic_sds_stp_request;

struct scu_sgl_element *scic_sds_stp_request_pio_get_next_sgl(
	struct scic_sds_stp_request *this_request);

#endif   /* _SCIC_SDS_SATA_PIO_REQUEST_H_ */