| |
| /* |
| * |
| 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 |
