drivers/char/rio/map.h

   1 /*
   2 ** -----------------------------------------------------------------------------
   3 **
   4 **  Perle Specialix driver for Linux
   5 **  Ported from existing RIO Driver for SCO sources.
   6  *
   7  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  *
  14  *      This program is distributed in the hope that it will be useful,
  15  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *      GNU General Public License for more details.
  18  *
  19  *      You should have received a copy of the GNU General Public License
  20  *      along with this program; if not, write to the Free Software
  21  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 **
  23 **      Module          : map.h
  24 **      SID             : 1.2
  25 **      Last Modified   : 11/6/98 11:34:11
  26 **      Retrieved       : 11/6/98 11:34:21
  27 **
  28 **  ident @(#)map.h     1.2
  29 **
  30 ** -----------------------------------------------------------------------------
  31 */
  32
  33 #ifndef __rio_map_h__
  34 #define __rio_map_h__
  35
  36 /*
  37 ** mapping structure passed to and from the config.rio program to
  38 ** determine the current topology of the world
  39 */
  40
  41 #define MAX_MAP_ENTRY 17
  42 #define TOTAL_MAP_ENTRIES (MAX_MAP_ENTRY*RIO_SLOTS)
  43 #define MAX_NAME_LEN 32
  44
  45 struct Map {
  46         unsigned int HostUniqueNum;     /* Supporting hosts unique number */
  47         unsigned int RtaUniqueNum;      /* Unique number */
  48         /*
  49          ** The next two IDs must be swapped on big-endian architectures
  50          ** when using a v2.04 /etc/rio/config with a v3.00 driver (when
  51          ** upgrading for example).
  52          */
  53         unsigned short ID;              /* ID used in the subnet */
  54         unsigned short ID2;             /* ID of 2nd block of 8 for 16 port */
  55         unsigned long Flags;            /* Booted, ID Given, Disconnected */
  56         unsigned long SysPort;          /* First tty mapped to this port */
  57         struct Top Topology[LINKS_PER_UNIT];    /* ID connected to each link */
  58         char Name[MAX_NAME_LEN];        /* Cute name by which RTA is known */
  59 };
  60
  61 /*
  62 ** Flag values:
  63 */
  64 #define RTA_BOOTED              0x00000001
  65 #define RTA_NEWBOOT             0x00000010
  66 #define MSG_DONE                0x00000020
  67 #define RTA_INTERCONNECT        0x00000040
  68 #define RTA16_SECOND_SLOT       0x00000080
  69 #define BEEN_HERE               0x00000100
  70 #define SLOT_TENTATIVE          0x40000000
  71 #define SLOT_IN_USE             0x80000000
  72
  73 /*
  74 ** HostUniqueNum is the unique number from the host card that this RTA
  75 ** is to be connected to.
  76 ** RtaUniqueNum is the unique number of the RTA concerned. It will be ZERO
  77 ** if the slot in the table is unused. If it is the same as the HostUniqueNum
  78 ** then this slot represents a host card.
  79 ** Flags contains current boot/route state info
  80 ** SysPort is a value in the range 0-504, being the number of the first tty
  81 ** on this RTA. Each RTA supports 8 ports. The SysPort value must be modulo 8.
  82 ** SysPort 0-127 correspond to /dev/ttyr001 to /dev/ttyr128, with minor
  83 ** numbers 0-127. SysPort 128-255 correspond to /dev/ttyr129 to /dev/ttyr256,
  84 ** again with minor numbers 0-127, and so on for SysPorts 256-383 and 384-511
  85 ** ID will be in the range 0-16 for a `known' RTA. ID will be 0xFFFF for an
  86 ** unused slot/unknown ID etc.
  87 ** The Topology array contains the ID of the unit connected to each of the
  88 ** four links on this unit. The entry will be 0xFFFF if NOTHING is connected
  89 ** to the link, or will be 0xFF00 if an UNKNOWN unit is connected to the link.
  90 ** The Name field is a null-terminated string, upto 31 characters, containing
  91 ** the 'cute' name that the sysadmin/users know the RTA by. It is permissible
  92 ** for this string to contain any character in the range \040 to \176 inclusive.
  93 ** In particular, ctrl sequences and DEL (0x7F, \177) are not allowed. The
  94 ** special character '%' IS allowable, and needs no special action.
  95 **
  96 */
  97
  98 #endif