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hpi6205.h

/*****************************************************************************

    AudioScience HPI driver
    Copyright (C) 1997-2003  AudioScience Inc. <support@audioscience.com>

    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Host Interface module for an ASI6205 based
bus mastering PCI adapter.

Copyright AudioScience, Inc., 2003
******************************************************************************/

#ifndef _HPI6205_H_
#define _HPI6205_H_

#include "hpi.h"

/***********************************************************
      Defines used for basic messaging
************************************************************/
#define H620_HIF_RESET          0
#define H620_HIF_IDLE           1
#define H620_HIF_GET_RESP       2
#define H620_HIF_DATA_DONE      3
#define H620_HIF_DATA_MASK      0x10
#define H620_HIF_SEND_DATA      0x14
#define H620_HIF_GET_DATA       0x15
#define H620_HIF_UNKNOWN                0xffff

/***********************************************************
      Types used for mixer control caching
************************************************************/

#define H620_MAX_ISTREAMS 32
#define H620_MAX_OSTREAMS 32
#define HPI_NMIXER_CONTROLS 2048

/*********************************************************************
This is used for background buffer bus mastering stream buffers.
**********************************************************************/
struct hostbuffer_status_6205 {
      u32 dwSamplesProcessed;
      u32 dwAuxiliaryDataAvailable;
      u32 dwStreamState;
      /* DSP index in to the host bus master buffer. */
      u32 dwDSPIndex;
      /* Host index in to the host bus master buffer. */
      u32 dwHostIndex;
      u32 dwSizeInBytes;
};

/*********************************************************************
This is used for dynamic control cache allocation
**********************************************************************/
struct controlcache_6205 {
      u32 dwNumberOfControls;
      u32 dwPhysicalPCI32address;
      u32 dwSizeInBytes;
};

/*********************************************************************
This is used for dynamic allocation of async event array
**********************************************************************/
struct async_event_buffer_6205 {
      u32 dwPhysicalPCI32address;
      u32 dwSpare;
      struct hpi_fifo_buffer b;
};

/***********************************************************
The Host located memory buffer that the 6205 will bus master
in and out of.
************************************************************/
#define HPI6205_SIZEOF_DATA (16*1024)
struct bus_master_interface {
      u32 dwHostCmd;
      u32 dwDspAck;
      u32 dwTransferSizeInBytes;
      union {
            struct hpi_message MessageBuffer;
            struct hpi_response ResponseBuffer;
            u8 bData[HPI6205_SIZEOF_DATA];
      } u;
      struct controlcache_6205 aControlCache;
      struct async_event_buffer_6205 aAsyncBuffer;
      struct hostbuffer_status_6205
       aInStreamHostBufferStatus[H620_MAX_ISTREAMS];
      struct hostbuffer_status_6205
       aOutStreamHostBufferStatus[H620_MAX_OSTREAMS];
};

#endif

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