- /*
- * Amiga Linux/68k A2065 Ethernet Driver
- *
- * (C) Copyright 1995 by Geert Uytterhoeven <geert@linux-m68k.org>
- *
- * ---------------------------------------------------------------------------
- *
- * 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
- */
- #define A2065_LANCE 0x4000
- #define A2065_RAM 0x8000
- #define A2065_RAM_SIZE 0x8000