/* * 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 |