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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | /* * Amiga Linux/68k A2065 Ethernet Driver * * (C) Copyright 1995 by Geert Uytterhoeven * (Geert.Uytterhoeven@cs.kuleuven.ac.be) * * --------------------------------------------------------------------------- * * This program is based on * * ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver * (C) Copyright 1995 by Geert Uytterhoeven, * Peter De Schrijver * * lance.c: An AMD LANCE ethernet driver for linux. * Written 1993-94 by Donald Becker. * * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller * Advanced Micro Devices * Publication #16907, Rev. B, Amendment/0, May 1994 * * --------------------------------------------------------------------------- * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of the Linux * distribution for more details. * * --------------------------------------------------------------------------- * * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: * * - an Am7990 Local Area Network Controller for Ethernet (LANCE) with * both 10BASE-2 (thin coax) and AUI (DB-15) connectors */ /* * Am7990 Local Area Network Controller for Ethernet (LANCE) */ struct lance_regs { unsigned short rdp; /* Register Data Port */ unsigned short rap; /* Register Address Port */ }; #define CRC_POLYNOMIAL_BE 0x04c11db7UL /* Ethernet CRC, big endian */ #define CRC_POLYNOMIAL_LE 0xedb88320UL /* Ethernet CRC, little endian */ /* * Am7990 Control and Status Registers */ #define LE_CSR0 0x0000 /* LANCE Controller Status */ #define LE_CSR1 0x0001 /* IADR[15:0] */ #define LE_CSR2 0x0002 /* IADR[23:16] */ #define LE_CSR3 0x0003 /* Misc */ /* * Bit definitions for CSR0 (LANCE Controller Status) */ #define LE_C0_ERR 0x8000 /* Error */ #define LE_C0_BABL 0x4000 /* Babble: Transmitted too many bits */ #define LE_C0_CERR 0x2000 /* No Heartbeat (10BASE-T) */ #define LE_C0_MISS 0x1000 /* Missed Frame */ #define LE_C0_MERR 0x0800 /* Memory Error */ #define LE_C0_RINT 0x0400 /* Receive Interrupt */ #define LE_C0_TINT 0x0200 /* Transmit Interrupt */ #define LE_C0_IDON 0x0100 /* Initialization Done */ #define LE_C0_INTR 0x0080 /* Interrupt Flag */ #define LE_C0_INEA 0x0040 /* Interrupt Enable */ #define LE_C0_RXON 0x0020 /* Receive On */ #define LE_C0_TXON 0x0010 /* Transmit On */ #define LE_C0_TDMD 0x0008 /* Transmit Demand */ #define LE_C0_STOP 0x0004 /* Stop */ #define LE_C0_STRT 0x0002 /* Start */ #define LE_C0_INIT 0x0001 /* Initialize */ /* * Bit definitions for CSR3 */ #define LE_C3_BSWP 0x0004 /* Byte Swap (on for big endian byte order) */ #define LE_C3_ACON 0x0002 /* ALE Control (on for active low ALE) */ #define LE_C3_BCON 0x0001 /* Byte Control */ /* * Mode Flags */ #define LE_MO_PROM 0x8000 /* Promiscuous Mode */ #define LE_MO_INTL 0x0040 /* Internal Loopback */ #define LE_MO_DRTY 0x0020 /* Disable Retry */ #define LE_MO_FCOLL 0x0010 /* Force Collision */ #define LE_MO_DXMTFCS 0x0008 /* Disable Transmit CRC */ #define LE_MO_LOOP 0x0004 /* Loopback Enable */ #define LE_MO_DTX 0x0002 /* Disable Transmitter */ #define LE_MO_DRX 0x0001 /* Disable Receiver */ struct lance_rx_desc { unsigned short rmd0; /* low address of packet */ unsigned char rmd1_bits; /* descriptor bits */ unsigned char rmd1_hadr; /* high address of packet */ short length; /* This length is 2s complement (negative)! * Buffer length */ unsigned short mblength; /* Aactual number of bytes received */ }; struct lance_tx_desc { unsigned short tmd0; /* low address of packet */ unsigned char tmd1_bits; /* descriptor bits */ unsigned char tmd1_hadr; /* high address of packet */ short length; /* Length is 2s complement (negative)! */ unsigned short misc; }; /* * Receive Flags */ #define LE_R1_OWN 0x80 /* LANCE owns the descriptor */ #define LE_R1_ERR 0x40 /* Error */ #define LE_R1_FRA 0x20 /* Framing Error */ #define LE_R1_OFL 0x10 /* Overflow Error */ #define LE_R1_CRC 0x08 /* CRC Error */ #define LE_R1_BUF 0x04 /* Buffer Error */ #define LE_R1_SOP 0x02 /* Start of Packet */ #define LE_R1_EOP 0x01 /* End of Packet */ #define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ /* * Transmit Flags */ #define LE_T1_OWN 0x80 /* LANCE owns the descriptor */ #define LE_T1_ERR 0x40 /* Error */ #define LE_T1_RES 0x20 /* Reserved, LANCE writes this with a zero */ #define LE_T1_EMORE 0x10 /* More than one retry needed */ #define LE_T1_EONE 0x08 /* One retry needed */ #define LE_T1_EDEF 0x04 /* Deferred */ #define LE_T1_SOP 0x02 /* Start of Packet */ #define LE_T1_EOP 0x01 /* End of Packet */ #define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ /* * Error Flags */ #define LE_T3_BUF 0x8000 /* Buffer Error */ #define LE_T3_UFL 0x4000 /* Underflow Error */ #define LE_T3_LCOL 0x1000 /* Late Collision */ #define LE_T3_CLOS 0x0800 /* Loss of Carrier */ #define LE_T3_RTY 0x0400 /* Retry Error */ #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry */ /* * A2065 Expansion Board Structure */ struct A2065Board { u_char Pad1[0x4000]; volatile struct lance_regs Lance; u_char Pad2[0x3ffc]; volatile u_char RAM[0x8000]; }; |