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 #if defined(RTA)
 106 #define LED_OFF            ((ushort) 0)    /* LED off */
 107 #define LED_RED            ((ushort) 1)    /* LED Red */
 108 #define LED_GREEN          ((ushort) 2)    /* LED Green */
 109 #define LED_ORANGE         ((ushort) 4)    /* LED Orange */
 110 #define LED_1TO8_OPEN      ((ushort) 1)    /* Port 1->8 LED on */
 111 #define LED_9TO16_OPEN     ((ushort) 2)    /* Port 9->16 LED on */
 112 #define LED_SET_COLOUR(colour)  (link->led = (colour))
 113 #define LED_OR_COLOUR(colour)   (link->led |= (colour))
 114 #define LED_TIMEOUT(time)    (link->led_timeout = RioTimePlus(RioTime(),(time)))
 115 #else
 116 #define LED_SET_COLOUR(colour)
 117 #define LED_OR_COLOUR(colour)
 118 #define LED_TIMEOUT(time)
 119 #endif /* RTA */
 120
 121 struct LPB {
 122                WORD          link_number ;       /* Link Number */
 123                Channel_ptr   in_ch ;             /* Link In Channel */
 124                Channel_ptr   out_ch ;            /* Link Out Channel */
 125 #ifdef RTA
 126                uchar        stat_led ;          /* Port open leds */
 127                uchar        led ;               /* True, light led! */
 128 #endif
 129                BYTE attached_serial[4]; /* Attached serial number */
 130                BYTE attached_host_serial[4];
 131                                                  /* Serial number of Host who
 132                                                     booted the other end */
 133                WORD          descheduled ;       /* Currently Descheduled */
 134                WORD          state;              /* Current state */
 135                WORD          send_poll ;         /* Send a Poll Packet */
 136                Process_ptr   ltt_p ;             /* Process Descriptor */
 137                Process_ptr   lrt_p ;             /* Process Descriptor */
 138                WORD          lrt_status ;        /* Current lrt status */
 139                WORD          ltt_status ;        /* Current ltt status */
 140                WORD          timeout ;           /* Timeout value */
 141                WORD          topology;           /* Topology bits */
 142                WORD          mon_ltt ;
 143                WORD          mon_lrt ;
 144                WORD          WaitNoBoot ;        /* Secs to hold off booting */
 145                PKT_ptr       add_packet_list;    /* Add packets to here */
 146                PKT_ptr       remove_packet_list; /* Send packets from here */
 147 #ifdef RTA
 148 #ifdef DCIRRUS
 149 #define    QBUFS_PER_REDIRECT (4 / PKTS_PER_BUFFER + 1)
 150 #else
 151 #define    QBUFS_PER_REDIRECT (8 / PKTS_PER_BUFFER + 1)
 152 #endif
 153                PKT_ptr_ptr   rd_add ;            /* Add a new Packet here */
 154                Q_BUF_ptr     rd_add_qb;          /* Pointer to the add Q buf */
 155                PKT_ptr_ptr   rd_add_st_qbb ;     /* Pointer to start of the Q's buf */
 156                PKT_ptr_ptr   rd_add_end_qbb ;    /* Pointer to the end of the Q's buf */
 157                PKT_ptr_ptr   rd_remove ;         /* Remove a Packet here */
 158                Q_BUF_ptr     rd_remove_qb ;      /* Pointer to the remove Q buf */
 159                PKT_ptr_ptr   rd_remove_st_qbb ;  /* Pointer to the start of the Q buf */
 160                PKT_ptr_ptr   rd_remove_end_qbb ; /* Pointer to the end of the Q buf */
 161                ushort        pkts_in_q ;         /* Packets in queue */
 162 #endif
 163
 164                Channel_ptr   lrt_fail_chan ;     /* Lrt's failure channel */
 165                Channel_ptr   ltt_fail_chan ;     /* Ltt's failure channel */
 166
 167 #if defined (HOST) || defined (INKERNEL)
 168  /* RUP structure for HOST to driver communications */
 169                struct RUP           rup ;
 170 #endif
 171                struct RUP           link_rup;           /* RUP for the link (POLL,
 172                                                     topology etc.) */
 173                WORD          attached_link ;     /* Number of attached link */
 174                WORD          csum_errors ;       /* csum errors */
 175                WORD          num_disconnects ;   /* number of disconnects */
 176                WORD          num_sync_rcvd ;     /* # sync's received */
 177                WORD          num_sync_rqst ;     /* # sync requests */
 178                WORD          num_tx ;            /* Num pkts sent */
 179                WORD          num_rx ;            /* Num pkts received */
 180                WORD          module_attached;    /* Module tpyes of attached */
 181                WORD          led_timeout;        /* LED timeout */
 182                WORD          first_port;         /* First port to service */
 183                WORD          last_port;          /* Last port to service */
 184            } ;
 185
 186 #endif
 187
 188 /*********** end of file ***********/