159 lines
5.6 KiB
C
159 lines
5.6 KiB
C
/* $NetBSD: if_eco.h,v 1.5 2005/02/26 22:45:09 perry Exp $ */
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/*-
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* Copyright (c) 2001 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NET_IF_ECO_H_
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#define _NET_IF_ECO_H_
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#include <sys/callout.h>
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#include <sys/mbuf.h>
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#include <sys/queue.h>
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#include <net/if.h>
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/*
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* Econet headers come in two forms. The initial frame of an exchange
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* has source and destination addresses, a control byte and a port.
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* Later frames just have source and destination addresses.
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*
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* Complete packets are generally passed around with the full header on,
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* even if this means assembling them from two separate frames.
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*/
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#define ECO_ADDR_LEN 2 /* Length of an Econet address */
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#define ECO_HDR_LEN 6 /* Two addresses, a port and a control byte */
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#define ECO_SHDR_LEN 4 /* "Short" Econet header: just two addresses */
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/* #define ECO_MTU 8192 * Default MTU */
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#define ECO_IPMTU 1280 /* MTU for IP used by RISC iX */
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#define ECO_MTU ECO_IPMTU
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struct eco_header {
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u_int8_t eco_dhost[ECO_ADDR_LEN];
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u_int8_t eco_shost[ECO_ADDR_LEN];
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u_int8_t eco_control;
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u_int8_t eco_port;
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} __attribute__((__packed__));
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#define ECO_PORT_IMMEDIATE 0x00
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#define ECO_PORT_DSTAPE 0x54 /* DigitalServicesTapeStore */
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#define ECO_PORT_FS 0x99 /* FileServerCommand */
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#define ECO_PORT_BRIDGE 0x9C /* Bridge */
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#define ECO_PORT_PSINQREP 0x9E /* PrinterServerInquiryReply */
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#define ECO_PORT_PSINQ 0x9F /* PrinterServerInquiry */
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#define ECO_PORT_FAST 0xA0 /* SJ *FAST protocol */
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#define ECO_PORT_NEXNETFIND 0xA1 /* SJ Nexus net find reply port */
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#define ECO_PORT_FINDSRV 0xB0 /* FindServer */
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#define ECO_PORT_FINDSRVREP 0xB1 /* FindServerReply */
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#define ECO_PORT_TTXTCMD 0xB2 /* TeletextServerCommand */
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#define ECO_PORT_TTXTPAGE 0xB3 /* TeletextServerPage */
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#define ECO_PORT_OLDPSDATA 0xD0 /* OldPrinterServer */
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#define ECO_PORT_PSDATA 0xD1 /* PrinterServer */
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#define ECO_PORT_IP 0xD2 /* TCPIPProtocolSuite */
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#define ECO_PORT_SIDSLAVE 0xD3 /* SIDFrameSlave */
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#define ECO_PORT_SCROLLARAMA 0xD4 /* Scrollarama */
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#define ECO_PORT_PHONE 0xD5 /* Phone */
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#define ECO_PORT_BCASTCTL 0xD6 /* BroadcastControl */
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#define ECO_PORT_BCASTDATA 0xD7 /* BroadcastData */
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#define ECO_PORT_IMPLICENCE 0xD8 /* ImpressionLicenceChecker */
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#define ECO_PORT_SQUIRREL 0xD9 /* DigitalServicesSquirrel */
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#define ECO_PORT_SID2NDARY 0xDA /* SIDSecondary */
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#define ECO_PORT_SQUIRREL2 0xDB /* DigitalServicesSquirrel2 */
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#define ECO_PORT_DDCTL 0xDC /* DataDistributionControl */
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#define ECO_PORT_DDDATA 0xDD /* DataDistributionData */
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#define ECO_PORT_CLASSROM 0xDE /* ClassROM */
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#define ECO_PORT_PSCMD 0xDF /* PrinterSpoolerCommand */
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/* Control bytes for immediate operations. */
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#define ECO_CTL_PEEK 0x81
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#define ECO_CTL_POKE 0x82
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#define ECO_CTL_JSR 0x83
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#define ECO_CTL_USERPROC 0x84
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#define ECO_CTL_OSPROC 0x85
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#define ECO_CTL_HALT 0x86
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#define ECO_CTL_CONTINUE 0x87
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#define ECO_CTL_MACHINEPEEK 0x88
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#define ECO_CTL_GETREGISTERS 0x89
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/* Control bytes for IP */
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#define ECO_CTL_IP 0x81
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#define ECO_CTL_IPBCAST_REPLY 0x8E
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#define ECO_CTL_IPBCAST_REQUEST 0x8F
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#define ECO_CTL_ARP_REQUEST 0xA1
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#define ECO_CTL_ARP_REPLY 0xA2
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struct eco_arp {
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u_int8_t ecar_spa[4];
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u_int8_t ecar_tpa[4];
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};
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enum eco_state {
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ECO_UNKNOWN, ECO_IDLE, ECO_SCOUT_RCVD,
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ECO_SCOUT_SENT, ECO_DATA_SENT, ECO_IMMED_SENT,
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ECO_DONE
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};
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/*
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* This structure contains a packet that might need retransmitting,
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* together with a callout to trigger retransmission. They're kept on
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* a per-interface list so they can be freed when an interface is
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* downed.
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*/
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struct eco_retry {
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LIST_ENTRY(eco_retry) er_link;
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struct callout er_callout;
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struct mbuf *er_packet;
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struct ifnet *er_ifp;
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};
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/*
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* Common structure used to store state about an Econet interface.
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*/
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struct ecocom {
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struct ifnet ec_if;
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int (*ec_claimwire)(struct ifnet *);
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void (*ec_txframe)(struct ifnet *, struct mbuf *);
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enum eco_state ec_state;
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struct mbuf *ec_scout;
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struct mbuf *ec_packet;
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LIST_HEAD(, eco_retry) ec_retries;
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};
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#ifdef _KERNEL
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void eco_ifattach(struct ifnet *, const u_int8_t *);
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void eco_ifdetach(struct ifnet *);
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int eco_init(struct ifnet *);
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void eco_stop(struct ifnet *, int);
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char *eco_sprintf(const u_int8_t *);
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struct mbuf * eco_inputframe(struct ifnet *, struct mbuf *);
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void eco_inputidle(struct ifnet *);
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#endif
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#endif
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