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/****************************************************************************
******* *******
******* L I N K
******* *******
****************************************************************************
Author : Ian Nandhra / Jeremy Rolls
Date :
*
* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Version : 0.01
Mods
----------------------------------------------------------------------------
Date By Description
----------------------------------------------------------------------------
***************************************************************************/
#ifndef _link_h
#define _link_h 1
#ifndef lint
#ifdef SCCS_LABELS
/* static char *_rio_link_h_sccs = "@(#)link.h 1.15"; */
#endif
#endif
/*************************************************
* Define the Link Status stuff
************************************************/
#define LRT_ACTIVE ((ushort) 0x01)
#define LRT_SPARE1 ((ushort) 0x02)
#define INTRO_RCVD ((ushort) 0x04)
#define FORCED_DISCONNECT ((ushort) 0x08)
#define LRT_SPARE2 ((ushort) 0x80)
#define TOP_OF_RTA_RAM ((ushort) 0x7000)
#define HOST_SERIAL_POINTER (unsigned char **) (TOP_OF_RTA_RAM - 2 * sizeof (ushort))
/* Flags for ltt_status */
#define WAITING_ACK (ushort) 0x0001
#define DATA_SENT (ushort) 0x0002
#define WAITING_RUP (ushort) 0x0004
#define WAITING_RETRY (ushort) 0x0008
#define WAITING_TOPOLOGY (ushort) 0x0010
#define SEND_SYNC (ushort) 0x0020
#define FOAD_THIS_LINK (ushort) 0x0040
#define REQUEST_SYNC (ushort) 0x0080
#define REMOTE_DYING (ushort) 0x0100
#define DIE_NOW (ushort) 0x0200
/* Boot request stuff */
#define BOOT_REQUEST ((ushort) 0) /* Request for a boot */
#define BOOT_ABORT ((ushort) 1) /* Abort a boot */
#define BOOT_SEQUENCE ((ushort) 2) /* Packet with the number of packets
and load address */
#define BOOT_COMPLETED ((ushort) 3) /* Boot completed */
/* States that a link can be in */
#define LINK_DISCONNECTED ((ushort) 0) /* Disconnected */
#define LINK_BOOT1 ((ushort) 1) /* Trying to send 1st stage boot */
#define LINK_BOOT2 ((ushort) 2) /* Trying to send 2nd stage boot */
#define LINK_BOOT2WAIT ((ushort) 3) /* Waiting for selftest results */
#define LINK_BOOT3 ((ushort) 4) /* Trying to send 3rd stage boots */
#define LINK_SYNC ((ushort) 5) /* Syncing */
#define LINK_INTRO ((ushort) 10) /* Introductory packet */
#define LINK_SUPPLYID ((ushort) 11) /* Trying to supply an ID */
#define LINK_TOPOLOGY ((ushort) 12) /* Send a topology update */
#define LINK_REQUESTID ((ushort) 13) /* Waiting for an ID */
#define LINK_CONNECTED ((ushort) 14) /* Connected */
#define LINK_INTERCONNECT ((ushort) 20) /* Subnets interconnected */
#define LINK_SPARE ((ushort) 40)
/*
** Set the default timeout for link communications.
*/
#define LINKTIMEOUT (400 * MILLISECOND)
/*
** LED stuff
*/
#define LED_SET_COLOUR(colour)
#define LED_OR_COLOUR(colour)
#define LED_TIMEOUT(time)
struct LPB {
WORD link_number; /* Link Number */
Channel_ptr in_ch; /* Link In Channel */
Channel_ptr out_ch; /* Link Out Channel */
BYTE attached_serial[4]; /* Attached serial number */
BYTE attached_host_serial[4];
/* Serial number of Host who
booted the other end */
WORD descheduled; /* Currently Descheduled */
WORD state; /* Current state */
WORD send_poll; /* Send a Poll Packet */
Process_ptr ltt_p; /* Process Descriptor */
Process_ptr lrt_p; /* Process Descriptor */
WORD lrt_status; /* Current lrt status */
WORD ltt_status; /* Current ltt status */
WORD timeout; /* Timeout value */
WORD topology; /* Topology bits */
WORD mon_ltt;
WORD mon_lrt;
WORD WaitNoBoot; /* Secs to hold off booting */
PKT_ptr add_packet_list; /* Add packets to here */
PKT_ptr remove_packet_list; /* Send packets from here */
Channel_ptr lrt_fail_chan; /* Lrt's failure channel */
Channel_ptr ltt_fail_chan; /* Ltt's failure channel */
/* RUP structure for HOST to driver communications */
struct RUP rup;
struct RUP link_rup; /* RUP for the link (POLL,
topology etc.) */
WORD attached_link; /* Number of attached link */
WORD csum_errors; /* csum errors */
WORD num_disconnects; /* number of disconnects */
WORD num_sync_rcvd; /* # sync's received */
WORD num_sync_rqst; /* # sync requests */
WORD num_tx; /* Num pkts sent */
WORD num_rx; /* Num pkts received */
WORD module_attached; /* Module tpyes of attached */
WORD led_timeout; /* LED timeout */
WORD first_port; /* First port to service */
WORD last_port; /* Last port to service */
};
#endif
/*********** end of file ***********/
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