114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
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/* $NetBSD: lance.h,v 1.2 2008/12/14 18:46:33 christos Exp $ */
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/*
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* source in this file came from
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* the Mach ethernet boot written by Leendert van Doorn.
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*/
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/* RAP functions as a select for RDP */
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#define RDP_CSR0 0
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#define RDP_CSR1 1
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#define RDP_CSR2 2
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#define RDP_CSR3 3
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/* contents of csr0 */
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#define CSR_ERR 0x8000
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#define CSR_BABL 0x4000
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#define CSR_CERR 0x2000
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#define CSR_MISS 0x1000
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#define CSR_MERR 0x0800
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#define CSR_RINT 0x0400
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#define CSR_TINT 0x0200
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#define CSR_IDON 0x0100
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#define CSR_INTR 0x0080
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#define CSR_INEA 0x0040
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#define CSR_RXON 0x0020
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#define CSR_TXON 0x0010
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#define CSR_TDMD 0x0008
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#define CSR_STOP 0x0004
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#define CSR_STRT 0x0002
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#define CSR_INIT 0x0001
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/* csr1 contains low 16 bits of address of Initialization Block */
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/* csr2 contains in low byte high 8 bits of address of InitBlock */
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/* contents of csr3 */
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#define CSR3_BSWP 0x04 /* byte swap (for big endian) */
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#define CSR3_ACON 0x02 /* ALE control */
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#define CSR3_BCON 0x01 /* byte control */
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/*
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* The initialization block
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*/
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typedef struct {
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u_short ib_mode; /* modebits, see below */
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char ib_padr[6]; /* physical 48bit Ether-address */
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u_short ib_ladrf[4]; /* 64bit hashtable for "logical" addresses */
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u_short ib_rdralow; /* low 16 bits of Receiver Descr. Ring addr */
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u_char ib_rdrahigh; /* high 8 bits of Receiver Descr. Ring addr */
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u_char ib_rlen; /* upper 3 bits are 2log Rec. Ring Length */
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u_short ib_tdralow; /* low 16 bits of Transm. Descr. Ring addr */
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u_char ib_tdrahigh; /* high 8 bits of Transm. Descr. Ring addr */
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u_char ib_tlen; /* upper 3 bits are 2log Transm. Ring Length */
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} initblock_t;
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/* bits in mode */
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#define IB_PROM 0x8000
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#define IB_INTL 0x0040
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#define IB_DRTY 0x0020
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#define IB_COLL 0x0010
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#define IB_DTCR 0x0008
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#define IB_LOOP 0x0004
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#define IB_DTX 0x0002
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#define IB_DRX 0x0001
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/*
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* A receive message descriptor entry
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*/
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typedef struct {
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u_short rmd_ladr; /* low 16 bits of bufaddr */
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char rmd_hadr; /* high 8 bits of bufaddr */
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char rmd_flags; /* see below */
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short rmd_bcnt; /* two's complement of buffer byte count */
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u_short rmd_mcnt; /* message byte count */
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} rmde_t;
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/* bits in flags */
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#define RMD_OWN 0x80
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#define RMD_ERR 0x40
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#define RMD_FRAM 0x20
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#define RMD_OFLO 0x10
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#define RMD_CRC 0x08
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#define RMD_BUFF 0x04
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#define RMD_STP 0x02
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#define RMD_ENP 0x01
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/*
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* A transmit message descriptor entry
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*/
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typedef struct {
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u_short tmd_ladr; /* low 16 bits of bufaddr */
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u_char tmd_hadr; /* high 8 bits of bufaddr */
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u_char tmd_flags; /* see below */
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short tmd_bcnt; /* two's complement of buffer byte count */
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u_short tmd_err; /* more error bits + TDR */
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} tmde_t;
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/* bits in flags */
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#define TMD_OWN 0x80
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#define TMD_ERR 0x40
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#define TMD_MORE 0x10
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#define TMD_ONE 0x08
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#define TMD_DEF 0x04
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#define TMD_STP 0x02
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#define TMD_ENP 0x01
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/* bits in tmd_err */
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#define TMDE_BUFF 0x8000
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#define TMDE_UFLO 0x4000
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#define TMDE_LCOL 0x1000
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#define TMDE_LCAR 0x0800
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#define TMDE_RTRY 0x0400
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#define TMDE_TDR 0x003F /* mask for TDR */
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