1 /****************************************************************************
3 ******* R U P S T R U C T U R E
5 ****************************************************************************
11 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 ----------------------------------------------------------------------------
33 ----------------------------------------------------------------------------
35 ***************************************************************************/
40 #define MAX_RUP ((short) 16)
41 #define PKTS_PER_RUP ((short) 2) /* They are always used in pairs */
43 /*************************************************
44 * Define all the packet request stuff
45 ************************************************/
46 #define TX_RUP_INACTIVE 0 /* Nothing to transmit */
47 #define TX_PACKET_READY 1 /* Transmit packet ready */
48 #define TX_LOCK_RUP 2 /* Transmit side locked */
50 #define RX_RUP_INACTIVE 0 /* Nothing received */
51 #define RX_PACKET_READY 1 /* Packet received */
53 #define RUP_NO_OWNER 0xff /* RUP not owned by any process */
56 u16 txpkt; /* Outgoing packet */
57 u16 rxpkt; /* Incoming packet */
58 u16 link; /* Which link to send down? */
59 u8 rup_dest_unit[2]; /* Destination unit */
60 u16 handshake; /* For handshaking */
61 u16 timeout; /* Timeout */
62 u16 status; /* Status */
63 u16 txcontrol; /* Transmit control */
64 u16 rxcontrol; /* Receive control */
69 /*********** end of file ***********/