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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/sound/pci/asihpi/hpi6205.h
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/*****************************************************************************

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    AudioScience HPI driver

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    Copyright (C) 1997-2010  AudioScience Inc. <[email protected]>

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    This program is free software; you can redistribute it and/or modify

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    it under the terms of version 2 of the GNU General Public License as

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    published by the Free Software Foundation;

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    This program is distributed in the hope that it will be useful,

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    but WITHOUT ANY WARRANTY; without even the implied warranty of

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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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    GNU General Public License for more details.

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    You should have received a copy of the GNU General Public License

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    along with this program; if not, write to the Free Software

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

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Host Interface module for an ASI6205 based

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bus mastering PCI adapter.

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Copyright AudioScience, Inc., 2003

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

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#ifndef _HPI6205_H_

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#define _HPI6205_H_

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#include "hpi_internal.h"

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

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	Defines used for basic messaging

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

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#define H620_HIF_RESET          0

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#define H620_HIF_IDLE           1

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#define H620_HIF_GET_RESP       2

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#define H620_HIF_DATA_DONE      3

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#define H620_HIF_DATA_MASK      0x10

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#define H620_HIF_SEND_DATA      0x14

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#define H620_HIF_GET_DATA       0x15

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#define H620_HIF_UNKNOWN                0x0000ffff

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

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	Types used for mixer control caching

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

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#define H620_MAX_ISTREAMS 32

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#define H620_MAX_OSTREAMS 32

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#define HPI_NMIXER_CONTROLS 2048

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

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This is used for dynamic control cache allocation

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

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struct controlcache_6205 {

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	u32 number_of_controls;

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	u32 physical_address32;

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	u32 size_in_bytes;

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};

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

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This is used for dynamic allocation of async event array

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

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struct async_event_buffer_6205 {

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	u32 physical_address32;

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	u32 spare;

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	struct hpi_fifo_buffer b;

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};

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

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The Host located memory buffer that the 6205 will bus master

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in and out of.

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

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#define HPI6205_SIZEOF_DATA (16*1024)

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struct bus_master_interface {

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	u32 host_cmd;

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	u32 dsp_ack;

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	u32 transfer_size_in_bytes;

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	union {

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		struct hpi_message_header message_buffer;

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		struct hpi_response_header response_buffer;

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		u8 b_data[HPI6205_SIZEOF_DATA];

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	} u;

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	struct controlcache_6205 control_cache;

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	struct async_event_buffer_6205 async_buffer;

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	struct hpi_hostbuffer_status

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	 instream_host_buffer_status[H620_MAX_ISTREAMS];

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	struct hpi_hostbuffer_status

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	 outstream_host_buffer_status[H620_MAX_OSTREAMS];

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};

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#endif

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