drivers/char/rio/link.h

   1 /****************************************************************************
   2  *******                                                              *******
   3  *******                      L I N K
   4  *******                                                              *******
   5  ****************************************************************************
   6
   7  Author  : Ian Nandhra / Jeremy Rolls
   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 _link_h
  38 #define _link_h 1
  39
  40 #ifndef lint
  41 #ifdef SCCS_LABELS
  42 /* static char *_rio_link_h_sccs = "@(#)link.h  1.15"; */
  43 #endif
  44 #endif
  45
  46
  47
  48 /*************************************************
  49  * Define the Link Status stuff
  50  ************************************************/
  51 #define LRT_ACTIVE         ((ushort) 0x01)
  52 #define LRT_SPARE1         ((ushort) 0x02)
  53 #define INTRO_RCVD         ((ushort) 0x04)
  54 #define FORCED_DISCONNECT  ((ushort) 0x08)
  55 #define LRT_SPARE2         ((ushort) 0x80)
  56
  57 #define TOP_OF_RTA_RAM     ((ushort) 0x7000)
  58 #define HOST_SERIAL_POINTER (unsigned char **) (TOP_OF_RTA_RAM - 2 * sizeof (ushort))
  59
  60 /* Flags for ltt_status */
  61 #define  WAITING_ACK            (ushort) 0x0001
  62 #define  DATA_SENT              (ushort) 0x0002
  63 #define  WAITING_RUP            (ushort) 0x0004
  64 #define  WAITING_RETRY          (ushort) 0x0008
  65 #define  WAITING_TOPOLOGY       (ushort) 0x0010
  66 #define  SEND_SYNC              (ushort) 0x0020
  67 #define  FOAD_THIS_LINK         (ushort) 0x0040
  68 #define  REQUEST_SYNC           (ushort) 0x0080
  69 #define  REMOTE_DYING           (ushort) 0x0100
  70 #define  DIE_NOW                (ushort) 0x0200
  71
  72 /* Boot request stuff */
  73 #define BOOT_REQUEST       ((ushort) 0) /* Request for a boot */
  74 #define BOOT_ABORT         ((ushort) 1) /* Abort a boot */
  75 #define BOOT_SEQUENCE      ((ushort) 2) /* Packet with the number of packets
  76                                            and load address */
  77 #define BOOT_COMPLETED     ((ushort) 3) /* Boot completed */
  78
  79 /* States that a link can be in */
  80 #define LINK_DISCONNECTED  ((ushort) 0) /* Disconnected */
  81 #define LINK_BOOT1         ((ushort) 1) /* Trying to send 1st stage boot */
  82 #define LINK_BOOT2         ((ushort) 2) /* Trying to send 2nd stage boot */
  83 #define LINK_BOOT2WAIT     ((ushort) 3) /* Waiting for selftest results */
  84 #define LINK_BOOT3         ((ushort) 4) /* Trying to send 3rd stage boots */
  85 #define LINK_SYNC          ((ushort) 5) /* Syncing */
  86
  87 #define LINK_INTRO         ((ushort) 10)        /* Introductory packet */
  88 #define LINK_SUPPLYID      ((ushort) 11)        /* Trying to supply an ID */
  89 #define LINK_TOPOLOGY      ((ushort) 12)        /* Send a topology update */
  90 #define LINK_REQUESTID     ((ushort) 13)        /* Waiting for an ID */
  91 #define LINK_CONNECTED     ((ushort) 14)        /* Connected */
  92
  93 #define LINK_INTERCONNECT  ((ushort) 20)        /* Subnets interconnected */
  94
  95 #define LINK_SPARE         ((ushort) 40)
  96
  97 /*
  98 ** Set the default timeout for link communications.
  99 */
 100 #define LINKTIMEOUT             (400 * MILLISECOND)
 101
 102 /*
 103 ** LED stuff
 104 */
 105 #define LED_SET_COLOUR(colour)
 106 #define LED_OR_COLOUR(colour)
 107 #define LED_TIMEOUT(time)
 108
 109 struct LPB {
 110         WORD link_number;       /* Link Number */
 111         Channel_ptr in_ch;      /* Link In Channel */
 112         Channel_ptr out_ch;     /* Link Out Channel */
 113         BYTE attached_serial[4];        /* Attached serial number */
 114         BYTE attached_host_serial[4];
 115         /* Serial number of Host who
 116            booted the other end */
 117         WORD descheduled;       /* Currently Descheduled */
 118         WORD state;             /* Current state */
 119         WORD send_poll;         /* Send a Poll Packet */
 120         Process_ptr ltt_p;      /* Process Descriptor */
 121         Process_ptr lrt_p;      /* Process Descriptor */
 122         WORD lrt_status;        /* Current lrt status */
 123         WORD ltt_status;        /* Current ltt status */
 124         WORD timeout;           /* Timeout value */
 125         WORD topology;          /* Topology bits */
 126         WORD mon_ltt;
 127         WORD mon_lrt;
 128         WORD WaitNoBoot;        /* Secs to hold off booting */
 129         PKT_ptr add_packet_list;        /* Add packets to here */
 130         PKT_ptr remove_packet_list;     /* Send packets from here */
 131
 132         Channel_ptr lrt_fail_chan;      /* Lrt's failure channel */
 133         Channel_ptr ltt_fail_chan;      /* Ltt's failure channel */
 134
 135         /* RUP structure for HOST to driver communications */
 136         struct RUP rup;
 137         struct RUP link_rup;    /* RUP for the link (POLL,
 138                                    topology etc.) */
 139         WORD attached_link;     /* Number of attached link */
 140         WORD csum_errors;       /* csum errors */
 141         WORD num_disconnects;   /* number of disconnects */
 142         WORD num_sync_rcvd;     /* # sync's received */
 143         WORD num_sync_rqst;     /* # sync requests */
 144         WORD num_tx;            /* Num pkts sent */
 145         WORD num_rx;            /* Num pkts received */
 146         WORD module_attached;   /* Module tpyes of attached */
 147         WORD led_timeout;       /* LED timeout */
 148         WORD first_port;        /* First port to service */
 149         WORD last_port;         /* Last port to service */
 150 };
 151
 152 #endif
 153
 154 /*********** end of file ***********/