hpi6205.h
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/*****************************************************************************
AudioScience HPI driver
Copyright (C) 1997-2011 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_internal.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 0x0000ffff
/***********************************************************
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 dynamic control cache allocation
**********************************************************************/
struct controlcache_6205 {
u32 number_of_controls;
u32 physical_address32;
u32 size_in_bytes;
};
/*********************************************************************
This is used for dynamic allocation of async event array
**********************************************************************/
struct async_event_buffer_6205 {
u32 physical_address32;
u32 spare;
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 message_buffer_6205 {
struct hpi_message message;
char data[256];
};
struct response_buffer_6205 {
struct hpi_response response;
char data[256];
};
union buffer_6205 {
struct message_buffer_6205 message_buffer;
struct response_buffer_6205 response_buffer;
u8 b_data[HPI6205_SIZEOF_DATA];
};
struct bus_master_interface {
u32 host_cmd;
u32 dsp_ack;
u32 transfer_size_in_bytes;
union buffer_6205 u;
struct controlcache_6205 control_cache;
struct async_event_buffer_6205 async_buffer;
struct hpi_hostbuffer_status
instream_host_buffer_status[H620_MAX_ISTREAMS];
struct hpi_hostbuffer_status
outstream_host_buffer_status[H620_MAX_OSTREAMS];
};
#endif