1 2/* 3 * 4 Copyright (c) Eicon Networks, 2002. 5 * 6 This source file is supplied for the use with 7 Eicon Networks range of DIVA Server Adapters. 8 * 9 Eicon File Revision : 2.1 10 * 11 This program is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 2, or (at your option) 14 any later version. 15 * 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY 18 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 19 See the GNU General Public License for more details. 20 * 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software 23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 */ 26#ifndef __DIVA_IDI_DFIFO_INC__ 27#define __DIVA_IDI_DFIFO_INC__ 28#define DIVA_DFIFO_CACHE_SZ 64 /* Used to isolate pipe from 29 rest of the world 30 should be divisible by 4 31 */ 32#define DIVA_DFIFO_RAW_SZ (2512 * 8) 33#define DIVA_DFIFO_DATA_SZ 68 34#define DIVA_DFIFO_HDR_SZ 4 35#define DIVA_DFIFO_SEGMENT_SZ (DIVA_DFIFO_DATA_SZ + DIVA_DFIFO_HDR_SZ) 36#define DIVA_DFIFO_SEGMENTS ((DIVA_DFIFO_RAW_SZ) / (DIVA_DFIFO_SEGMENT_SZ) + 1) 37#define DIVA_DFIFO_MEM_SZ ( \ 38 (DIVA_DFIFO_SEGMENT_SZ) * (DIVA_DFIFO_SEGMENTS) + \ 39 (DIVA_DFIFO_CACHE_SZ) * 2 \ 40 ) 41#define DIVA_DFIFO_STEP DIVA_DFIFO_SEGMENT_SZ 42/* ------------------------------------------------------------------------- 43 Block header layout is: 44 byte[0] -> flags 45 byte[1] -> length of data in block 46 byte[2] -> reserved 47 byte[4] -> reserved 48 ------------------------------------------------------------------------- */ 49#define DIVA_DFIFO_WRAP 0x80 /* This is the last block in fifo */ 50#define DIVA_DFIFO_READY 0x40 /* This block is ready for processing */ 51#define DIVA_DFIFO_LAST 0x20 /* This block is last in message */ 52#define DIVA_DFIFO_AUTO 0x10 /* Don't look for 'ready', don't ack */ 53int diva_dfifo_create(void *start, int length); 54#endif 55