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This code is unbelievably ugly, has never been fixed up to work with
relocation and (hence) presumably has not been used since Etherboot 5.0. Say bye-bye!
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Michael Brown
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/*-
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*
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* This software may be used and distributed according to the terms
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* of the GNU Public License, incorporated herein by reference.
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*
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* Module : sk_g16.h
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* Version : $Revision$
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*
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* Author : M.Hipp (mhipp@student.uni-tuebingen.de)
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* changes by : Patrick J.D. Weichmann
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*
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* Date Created : 94/05/25
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*
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* Description : In here are all necessary definitions of
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* the am7990 (LANCE) chip used for writing a
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* network device driver which uses this chip
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*
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* $Log$
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* Revision 1.1 2005/03/08 18:53:40 mcb30
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* Initial revision
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*
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* Revision 1.1 2002/12/12 02:18:20 ebiederm
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* Moved network drivers into drivers/net
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*
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-*/
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#ifndef SK_G16_H
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#define SK_G16_H
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/*
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* Control and Status Register 0 (CSR0) bit definitions
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*
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* (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write)
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*
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*/
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#define CSR0_ERR 0x8000 /* Error summary (R) */
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#define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */
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#define CSR0_CERR 0x2000 /* Collision Error (RC) */
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#define CSR0_MISS 0x1000 /* Missed packet (RC) */
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#define CSR0_MERR 0x0800 /* Memory Error (RC) */
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#define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */
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#define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */
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#define CSR0_IDON 0x0100 /* Initialization Done (RC) */
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#define CSR0_INTR 0x0080 /* Interrupt Flag (R) */
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#define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */
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#define CSR0_RXON 0x0020 /* Receiver on (R) */
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#define CSR0_TXON 0x0010 /* Transmitter on (R) */
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#define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */
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#define CSR0_STOP 0x0004 /* Stop (RS) */
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#define CSR0_STRT 0x0002 /* Start (RS) */
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#define CSR0_INIT 0x0001 /* Initialize (RS) */
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#define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */
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/*
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* Control and Status Register 3 (CSR3) bit definitions
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*
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*/
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#define CSR3_BSWAP 0x0004 /* Byte Swap (RW) */
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#define CSR3_ACON 0x0002 /* ALE Control (RW) */
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#define CSR3_BCON 0x0001 /* Byte Control (RW) */
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/*
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* Initialization Block Mode operation Bit Definitions.
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*/
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#define MODE_PROM 0x8000 /* Promiscuous Mode */
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#define MODE_INTL 0x0040 /* Internal Loopback */
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#define MODE_DRTY 0x0020 /* Disable Retry */
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#define MODE_COLL 0x0010 /* Force Collision */
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#define MODE_DTCR 0x0008 /* Disable Transmit CRC) */
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#define MODE_LOOP 0x0004 /* Loopback */
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#define MODE_DTX 0x0002 /* Disable the Transmitter */
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#define MODE_DRX 0x0001 /* Disable the Receiver */
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#define MODE_NORMAL 0x0000 /* Normal operation mode */
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/*
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* Receive message descriptor status bit definitions.
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*/
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#define RX_OWN 0x80 /* Owner bit 0 = host, 1 = lance */
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#define RX_ERR 0x40 /* Error Summary */
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#define RX_FRAM 0x20 /* Framing Error */
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#define RX_OFLO 0x10 /* Overflow Error */
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#define RX_CRC 0x08 /* CRC Error */
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#define RX_BUFF 0x04 /* Buffer Error */
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#define RX_STP 0x02 /* Start of Packet */
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#define RX_ENP 0x01 /* End of Packet */
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/*
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* Transmit message descriptor status bit definitions.
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*/
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#define TX_OWN 0x80 /* Owner bit 0 = host, 1 = lance */
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#define TX_ERR 0x40 /* Error Summary */
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#define TX_MORE 0x10 /* More the 1 retry needed to Xmit */
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#define TX_ONE 0x08 /* One retry needed to Xmit */
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#define TX_DEF 0x04 /* Deferred */
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#define TX_STP 0x02 /* Start of Packet */
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#define TX_ENP 0x01 /* End of Packet */
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/*
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* Transmit status (2) (valid if TX_ERR == 1)
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*/
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#define TX_BUFF 0x8000 /* Buffering error (no ENP) */
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#define TX_UFLO 0x4000 /* Underflow (late memory) */
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#define TX_LCOL 0x1000 /* Late collision */
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#define TX_LCAR 0x0400 /* Loss of Carrier */
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#define TX_RTRY 0x0200 /* Failed after 16 retransmissions */
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#define TX_TDR 0x003f /* Time-domain-reflectometer-value */
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/*
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* Structures used for Communication with the LANCE
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*/
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/* LANCE Initialize Block */
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struct init_block
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{
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unsigned short mode; /* Mode Register */
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unsigned char paddr[6]; /* Physical Address (MAC) */
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unsigned char laddr[8]; /* Logical Filter Address (not used) */
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unsigned int rdrp; /* Receive Descriptor Ring pointer */
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unsigned int tdrp; /* Transmit Descriptor Ring pointer */
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};
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/* Receive Message Descriptor Entry */
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struct rmd
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{
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union rmd_u
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{
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unsigned long buffer; /* Address of buffer */
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struct rmd_s
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{
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unsigned char unused[3];
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unsigned volatile char status; /* Status Bits */
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} s;
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} u;
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volatile short blen; /* Buffer Length (two's complement) */
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unsigned short mlen; /* Message Byte Count */
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};
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/* Transmit Message Descriptor Entry */
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struct tmd
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{
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union tmd_u
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{
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unsigned long buffer; /* Address of buffer */
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struct tmd_s
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{
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unsigned char unused[3];
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unsigned volatile char status; /* Status Bits */
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} s;
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} u;
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unsigned short blen; /* Buffer Length (two's complement) */
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unsigned volatile short status2; /* Error Status Bits */
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};
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#endif /* End of SK_G16_H */
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