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/drivers/char/rio/rup.h

https://bitbucket.org/evzijst/gittest
C Header | 82 lines | 31 code | 11 blank | 40 comment | 1 complexity | 083efce97e297f1d02e1592a5233bf9a MD5 | raw file
 1/****************************************************************************
 2 *******                                                              *******
 3 *******               R U P   S T R U C T U R E
 4 *******                                                              *******
 5 ****************************************************************************
 6
 7 Author  : Ian Nandhra
 8 Date    :
 9
10 *
11 *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
12 *
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.
17 *
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.
22 *
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.
26
27 Version : 0.01
28
29
30                            Mods
31 ----------------------------------------------------------------------------
32  Date     By                Description
33 ----------------------------------------------------------------------------
34
35 ***************************************************************************/
36
37#ifndef _rup_h
38#define _rup_h 1
39
40#ifdef SCCS_LABELS
41#ifndef lint
42/* static char *_rio_rup_h_sccs = "@(#)rup.h	1.5"; */
43#endif
44#endif
45
46#if defined( HOST ) || defined( INKERNEL )
47#define MAX_RUP          ((short) 16) 
48#endif
49#ifdef RTA
50#define MAX_RUP          ((short) 1)
51#endif
52
53#define PKTS_PER_RUP     ((short) 2)     /* They are always used in pairs */
54
55/*************************************************
56 * Define all the  packet request stuff
57 ************************************************/
58#define TX_RUP_INACTIVE          0        /* Nothing to transmit */
59#define TX_PACKET_READY          1        /* Transmit packet ready */
60#define TX_LOCK_RUP              2        /* Transmit side locked */
61
62#define RX_RUP_INACTIVE          0        /* Nothing received */
63#define RX_PACKET_READY          1        /* Packet received */
64
65#define RUP_NO_OWNER             0xff     /* RUP not owned by any process */
66
67struct RUP {
68             PKT_ptr    txpkt;            /* Outgoing packet */
69             PKT_ptr    rxpkt;            /* Incoming packet */
70             WORD       link;             /* Which link to send down? */
71             BYTE       rup_dest_unit[2]; /* Destination unit */
72             WORD       handshake;        /* For handshaking */
73             WORD       timeout;          /* Timeout */
74             WORD       status;           /* Status */
75             WORD       txcontrol;        /* Transmit control */
76             WORD       rxcontrol;        /* Receive control */
77           };
78 
79#endif
80
81/*********** end of file ***********/
82