rup.h
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上传日期:2013-02-24
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- /****************************************************************************
- ******* *******
- ******* R U P S T R U C T U R E
- ******* *******
- ****************************************************************************
- Author : Ian Nandhra
- Date :
- *
- * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
- *
- * 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 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the 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.
- Version : 0.01
- Mods
- ----------------------------------------------------------------------------
- Date By Description
- ----------------------------------------------------------------------------
- ***************************************************************************/
- #ifndef _rup_h
- #define _rup_h 1
- #ifdef SCCS_LABELS
- #ifndef lint
- /* static char *_rio_rup_h_sccs = "@(#)rup.h 1.5"; */
- #endif
- #endif
- #if defined( HOST ) || defined( INKERNEL )
- #define MAX_RUP ((short) 16)
- #endif
- #ifdef RTA
- #define MAX_RUP ((short) 1)
- #endif
- #define PKTS_PER_RUP ((short) 2) /* They are always used in pairs */
- /*************************************************
- * Define all the packet request stuff
- ************************************************/
- #define TX_RUP_INACTIVE 0 /* Nothing to transmit */
- #define TX_PACKET_READY 1 /* Transmit packet ready */
- #define TX_LOCK_RUP 2 /* Transmit side locked */
- #define RX_RUP_INACTIVE 0 /* Nothing received */
- #define RX_PACKET_READY 1 /* Packet received */
- #define RUP_NO_OWNER 0xff /* RUP not owned by any process */
- struct RUP {
- PKT_ptr txpkt; /* Outgoing packet */
- PKT_ptr rxpkt; /* Incoming packet */
- WORD link; /* Which link to send down? */
- BYTE rup_dest_unit[2]; /* Destination unit */
- WORD handshake; /* For handshaking */
- WORD timeout; /* Timeout */
- WORD status; /* Status */
- WORD txcontrol; /* Transmit control */
- WORD rxcontrol; /* Receive control */
- };
-
- #endif
- /*********** end of file ***********/