diff options
Diffstat (limited to 'drivers/isdn/hardware/eicon/dfifo.h')
| -rw-r--r-- | drivers/isdn/hardware/eicon/dfifo.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/eicon/dfifo.h b/drivers/isdn/hardware/eicon/dfifo.h new file mode 100644 index 000000000..6a1d3337f --- /dev/null +++ b/drivers/isdn/hardware/eicon/dfifo.h @@ -0,0 +1,54 @@ + +/* + * + 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 |