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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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