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/*
* Isolan AT 4141-0 Ethernet driver header file
* Isolink 4110
*
* By Paul Richards
*
* Copyright (C) 1993, Paul Richards. This software may be used, modified,
* copied, distributed, and sold, in both source and binary form provided
* that the above copyright and these terms are retained. Under no
* circumstances is the author responsible for the proper functioning
* of this software, nor does the author assume any responsibility
* for damages incurred with its use.
*
* $Id$
*/
/* Declarations specific to this driver */
#define NTBUF 2
#define TLEN 1
#define NRBUF 8
#define RLEN 3
#define BUFSIZE 1518
#define RAP 0xe
#define RDP 0xc
/* Control and status register 0 flags */
#define ERR 0x8000
#define BABL 0x4000
#define CERR 0x2000
#define MISS 0x1000
#define MERR 0x0800
#define RINT 0x0400
#define TINT 0x0200
#define IDON 0x0100
#define INTR 0x0080
#define INEA 0x0040
#define RXON 0x0020
#define TXON 0x0010
#define TDMD 0x0008
#define STOP 0x0004
#define STRT 0x0002
#define INIT 0x0001
/* Coontrol and status register 3 flags */
#define BSWP 0x0004
#define ACON 0x0002
#define BCON 0x0001
/* Initialisation block (must be on word boundary) */
struct init_block {
u_short mode; /* Mode register */
u_char padr[6]; /* Ethernet address */
u_char ladrf[8]; /* Logical address filter (multicast) */
u_short rdra; /* Low order pointer to receive ring */
u_short rlen; /* High order pointer and no. rings */
u_short tdra; /* Low order pointer to transmit ring */
u_short tlen; /* High order pointer and no rings */
};
/* Mode settings */
#define PROM 0x8000 /* Promiscuous */
#define INTL 0x0040 /* Internal loopback */
#define DRTY 0x0020 /* Disable retry */
#define COLL 0x0010 /* Force collision */
#define DTCR 0x0008 /* Disable transmit crc */
#define LOOP 0x0004 /* Loop back */
#define DTX 0x0002 /* Disable transmitter */
#define DRX 0x0001 /* Disable receiver */
/* Message descriptor structure */
struct mds {
u_short addr;
u_short flags;
u_short bcnt;
u_short mcnt;
};
/* Receive ring status flags */
#define OWN 0x8000 /* Owner bit, 0=host, 1=Lance */
#define MDERR 0x4000 /* Error */
#define FRAM 0x2000 /* Framing error error */
#define OFLO 0x1000 /* Silo overflow */
#define CRC 0x0800 /* CRC error */
#define RBUFF 0x0400 /* Buffer error */
#define STP 0x0200 /* Start of packet */
#define ENP 0x0100 /* End of packet */
/* Transmit ring flags */
#define MORE 0x1000 /* More than 1 retry */
#define ONE 0x0800 /* One retry */
#define DEF 0x0400 /* Deferred transmit */
/* Transmit errors */
#define TBUFF 0x8000 /* Buffer error */
#define UFLO 0x4000 /* Silo underflow */
#define LCOL 0x1000 /* Late collision */
#define LCAR 0x0800 /* Loss of carrier */
#define RTRY 0x0400 /* Tried 16 times */
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