freebsd-dev/sys/dev/isci/scil/scic_sds_stp_pio_request.h

/*-
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 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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 * You should have received a copy of the GNU General Public License
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#ifndef _SCIC_SDS_SATA_PIO_REQUEST_H_
#define _SCIC_SDS_SATA_PIO_REQUEST_H_

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus

#include <dev/isci/scil/sci_base_state.h>
#include <dev/isci/scil/scic_sds_request.h>
#include <dev/isci/scil/scu_task_context.h>

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


/**
 * @enum
 *
 * 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,

   SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES
};




// ---------------------------------------------------------------------------

extern SCIC_SDS_IO_REQUEST_STATE_HANDLER_T
   scic_sds_stp_request_started_pio_substate_handler_table[
      SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];

extern SCI_BASE_STATE_T
   scic_sds_stp_request_started_pio_substate_table[
      SCIC_SDS_STP_REQUEST_STARTED_PIO_MAX_SUBSTATES];

// ---------------------------------------------------------------------------

SCU_SGL_ELEMENT_T * scic_sds_stp_request_pio_get_next_sgl(
   SCIC_SDS_STP_REQUEST_T * this_request
);

#ifdef __cplusplus
}
#endif // __cplusplus

#endif   // _SCIC_SDS_SATA_PIO_REQUEST_H_