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/*
*
Copyright (c) Eicon Networks, 2002.
*
This source file is supplied for the use with
Eicon Networks range of DIVA Server Adapters.
*
Eicon File Revision : 2.1
*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
*
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef __DIVA_IDI_DFIFO_INC__
#define __DIVA_IDI_DFIFO_INC__
#define DIVA_DFIFO_CACHE_SZ 64 /* Used to isolate pipe from
rest of the world
should be divisible by 4
*/
#define DIVA_DFIFO_RAW_SZ (2512 * 8)
#define DIVA_DFIFO_DATA_SZ 68
#define DIVA_DFIFO_HDR_SZ 4
#define DIVA_DFIFO_SEGMENT_SZ (DIVA_DFIFO_DATA_SZ + DIVA_DFIFO_HDR_SZ)
#define DIVA_DFIFO_SEGMENTS ((DIVA_DFIFO_RAW_SZ) / (DIVA_DFIFO_SEGMENT_SZ) + 1)
#define DIVA_DFIFO_MEM_SZ ( \
(DIVA_DFIFO_SEGMENT_SZ) * (DIVA_DFIFO_SEGMENTS) + \
(DIVA_DFIFO_CACHE_SZ) * 2 \
)
#define DIVA_DFIFO_STEP DIVA_DFIFO_SEGMENT_SZ
/* -------------------------------------------------------------------------
Block header layout is:
byte[0] -> flags
byte[1] -> length of data in block
byte[2] -> reserved
byte[4] -> reserved
------------------------------------------------------------------------- */
#define DIVA_DFIFO_WRAP 0x80 /* This is the last block in fifo */
#define DIVA_DFIFO_READY 0x40 /* This block is ready for processing */
#define DIVA_DFIFO_LAST 0x20 /* This block is last in message */
#define DIVA_DFIFO_AUTO 0x10 /* Don't look for 'ready', don't ack */
int diva_dfifo_create(void *start, int length);
#endif
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