/*
* Amiga Linux/m68k Ariadne Ethernet Driver
*
* © Copyright 1995 by Geert Uytterhoeven (geert@linux-m68k.org)
* Peter De Schrijver
* (Peter.DeSchrijver@linux.cc.kuleuven.ac.be)
*
* ----------------------------------------------------------------------------------
*
* This program is based on
*
* 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
*
* MC68230: Parallel Interface/Timer (PI/T)
* Motorola Semiconductors, December, 1983
*
* ----------------------------------------------------------------------------------
*
* 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 Ariadne is a Zorro-II board made by Village Tronic. It contains:
*
* - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both
* 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors
*
* - an MC68230 Parallel Interface/Timer configured as 2 parallel ports
*/
/*
* Am79C960 PCnet-ISA
*/
struct Am79C960 {
volatile u_short AddressPROM[8];
/* IEEE Address PROM (Unused in the Ariadne) */
volatile u_short RDP; /* Register Data Port */
volatile u_short RAP; /* Register Address Port */
volatile u_short Reset; /* Reset Chip on Read Access */
volatile u_short IDP; /* ISACSR Data Port */
};
/*
* Am79C960 Control and Status Registers
*
* These values are already swap()ed!!
*
* Only registers marked with a `-' are intended for network software
* access
*/
#define CSR0 0x0000 /* - PCnet-ISA Controller Status */
#define CSR1 0x0100 /* - IADR[15:0] */
#define CSR2 0x0200 /* - IADR[23:16] */
#define CSR3 0x0300 /* - Interrupt Masks and Deferral Control */
#define CSR4 0x0400 /* - Test and Features Control */
#define CSR6 0x0600 /* RCV/XMT Descriptor Table Length */
#define CSR8 0x0800 /* - Logical Address Filter, LADRF[15:0] */
#define CSR9 0x0900 /* - Logical Address Filter, LADRF[31:16] */
#define CSR10 0x0a00 /* - Logical Address Filter, LADRF[47:32] */
#define CSR11 0x0b00 /* - Logical Address Filter, LADRF[63:48] */
#define CSR12 0x0c00 /* - Physical Address Register, PADR[15:0] */
#define CSR13 0x0d00 /* - Physical Address Register, PADR[31:16] */
#define CSR14 0x0e00 /* - Physical Address Register, PADR[47:32] */
#define CSR15 0x0f00 /* - Mode Register */
#define CSR16 0x1000 /* Initialization Block Address Lower */
#define CSR17 0x1100 /* Initialization Block Address Upper */
#define CSR18 0x1200 /* Current Receive Buffer Address */
#define CSR19 0x1300 /* Current Receive Buffer Address */
#define CSR20 0x1400 /* Current Transmit Buffer Address */
#define CSR21 0x1500 /* Current Transmit Buffer Address */
#define CSR22 0x1600 /* Next Receive Buffer Address */
#define CSR23 0x1700 /* Next Receive Buffer Address */
#define CSR24 0x1800 /* - Base Address of Receive Ring */
#define CSR25 0x1900 /* - Base Address of Receive Ring */
#define CSR26 0x1a00 /* Next Receive Descriptor Address */
#define CSR27 0x1b00 /* Next Receive Descriptor Address */
#define CSR28 0x1c00 /* Current Receive Descriptor Address */
#define CSR29 0x1d00 /* Current Receive Descriptor Address */
#define CSR30 0x1e00 /* - Base Address of Transmit Ring */
#define CSR31 0x1f00 /* - Base Address of transmit Ring */
#define CSR32 0x2000 /* Next Transmit Descriptor Address */
#define CSR33 0x2100 /* Next Transmit Descriptor Address */
#define CSR34 0x2200 /* Current Transmit Descriptor Address */
#define CSR35 0x2300 /* Current Transmit Descriptor Address */
#define CSR36 0x2400 /* Next Next Receive Descriptor Address */
#define CSR37 0x2500 /* Next Next Receive Descriptor Address */
#define CSR38 0x2600 /* Next Next Transmit Descriptor Address */
#define CSR39 0x2700 /* Next Next Transmit Descriptor Address */
#define CSR40 0x2800 /* Current Receive Status and Byte Count */
#define CSR41 0x2900 /* Current Receive Status and Byte Count */
#define CSR42 0x2a00 /* Current Transmit Status and Byte Count */
#define CSR43 0x2b00 /* Current Transmit Status and Byte Count */
#define CSR44 0x2c00 /* Next Receive Status and Byte Count */
#define CSR45 0x2d00 /* Next Receive Status and Byte Count */
#define CSR46 0x2e00 /* Poll Time Counter */
#define CSR47 0x2f00 /* Polling Interval */
#define CSR48 0x3000 /* Temporary Storage */
#define CSR49 0x3100 /* Temporary Storage */
#define CSR50 0x3200 /* Temporary Storage */
#define CSR51 0x3300 /* Temporary Storage */
#define CSR52 0x3400 /* Temporary Storage */
#define CSR53 0x3500 /* Temporary Storage */
#define CSR54 0x3600 /* Temporary Storage */
#define CSR55 0x3700 /* Temporary Storage */
#define CSR56 0x3800 /* Temporary Storage */
#define CSR57 0x3900 /* Temporary Storage */
#define CSR58 0x3a00 /* Temporary Storage */
#define CSR59 0x3b00 /* Temporary Storage */
#define CSR60 0x3c00 /* Previous Transmit Descriptor Address */
#define CSR61 0x3d00 /* Previous Transmit Descriptor Address */
#define CSR62 0x3e00 /* Previous Transmit Status and Byte Count */
#define CSR63 0x3f00 /* Previous Transmit Status and Byte Count */
#define CSR64 0x4000 /* Next Transmit Buffer Address */
#define CSR65 0x4100 /* Next Transmit Buffer Address */
#define CSR66 0x4200 /* Next Transmit Status and Byte Count */
#define CSR67 0x4300 /* Next Transmit Status and Byte Count */
#define CSR68 0x4400 /* Transmit Status Temporary Storage */
#define CSR69 0x4500 /* Transmit Status Temporary Storage */
#define CSR70 0x4600 /* Temporary Storage */
#define CSR71 0x4700 /* Temporary Storage */
#define CSR72 0x4800 /* Receive Ring Counter */
#define CSR74 0x4a00 /* Transmit Ring Counter */
#define CSR76 0x4c00 /* - Receive Ring Length */
#define CSR78 0x4e00 /* - Transmit Ring Length */
#define CSR80 0x5000 /* - Burst and FIFO Threshold Control */
#define CSR82 0x5200 /* - Bus Activity Timer */
#define CSR84 0x5400 /* DMA Address */
#define CSR85 0x5500 /* DMA Address */
#define CSR86 0x5600 /* Buffer Byte Counter */
#define CSR88 0x5800 /* - Chip ID */
#define CSR89 0x5900 /* - Chip ID */
#define CSR92 0x5c00 /* Ring Length Conversion */
#define CSR94 0x5e00 /* Transmit Time Domain Reflectometry Count */
#define CSR96 0x6000 /* Bus Interface Scratch Register 0 */
#define CSR97 0x6100 /* Bus Interface Scratch Register 0 */
#define CSR98 0x6200 /* Bus Interface Scratch Register 1 */
#define CSR99 0x6300 /* Bus Interface Scratch Register 1 */
#define CSR104 0x6800 /* SWAP */
#define CSR105 0x6900 /* SWAP */
#define CSR108 0x6c00 /* Buffer Management Scratch */
#define CSR109 0x6d00 /* Buffer Management Scratch */
#define CSR112 0x7000 /* - Missed Frame Count */
#define CSR114 0x7200 /* - Receive Collision Count */
#define CSR124 0x7c00 /* - Buffer Management Unit Test */
/*
* Am79C960 ISA Control and Status Registers
*
* These values are already swap()ed!!
*/
#define ISACSR0 0x0000 /* Master Mode Read Active */
#define ISACSR1 0x0100 /* Master Mode Write Active */
#define ISACSR2 0x0200 /* Miscellaneous Configuration */
#define ISACSR4 0x0400 /* LED0 Status (Link Integrity) */
#define ISACSR5 0x0500 /* LED1 Status */
#define ISACSR6 0x0600 /* LED2 Status */
#define ISACSR7 0x0700 /* LED3 Status */
/*
* Bit definitions for CSR0 (PCnet-ISA Controller Status)
*
* These values are already swap()ed!!
*/
#define ERR 0x0080 /* Error */
#define BABL 0x0040 /* Babble: Transmitted too many bits */
#define CERR 0x0020 /* No Heartbeat (10BASE-T) */
#define MISS 0x0010 /* Missed Frame */
#define MERR 0x0008 /* Memory Error */
#define RINT 0x0004 /* Receive Interrupt */
#define TINT 0x0002 /* Transmit Interrupt */
#define IDON 0x0001 /* Initialization Done */
#define INTR 0x8000 /* Interrupt Flag */
#define INEA 0x4000 /* Interrupt Enable */
#define RXON 0x2000 /* Receive On */
#define TXON 0x1000 /* Transmit On */
#define TDMD 0x0800 /* Transmit Demand */
#define STOP 0x0400 /* Stop */
#define STRT 0x0200 /* Start */
#define INIT 0x0100 /* Initialize */
/*
* Bit definitions for CSR3 (Interrupt Masks and Deferral Control)
*
* These values are already swap()ed!!
*/
#define BABLM 0x0040 /* Babble Mask */
#define MISSM 0x0010 /* Missed Frame Mask */
#define MERRM 0x0008 /* Memory Error Mask */
#define RINTM 0x0004 /* Receive Interrupt Mask */
#define TINTM 0x0002 /* Transmit Interrupt Mask */
#define IDONM 0x0001 /* Initialization Done Mask */
#define DXMT2PD 0x1000 /* Disable Transmit Two Part Deferral */
#define EMBA 0x0800 /* Enable Modified Back-off Algorithm */
/*
* Bit definitions for CSR4 (Test and Features Control)
*
* These values are already swap()ed!!
*/
#define ENTST 0x0080 /* Enable Test Mode */
#define DMAPLUS 0x0040 /* Disable Burst Transaction Counter */
#define TIMER 0x0020 /* Timer Enable Register */
#define DPOLL 0x0010 /* Disable Transmit Polling */
#define APAD_XMT 0x0008 /* Auto Pad Transmit */
#define ASTRP_RCV 0x0004 /* Auto Pad Stripping */
#define MFCO 0x0002 /* Missed Frame Counter Overflow Interrupt */
#define MFCOM 0x0001 /* Missed Frame Counter Overflow Mask */
#define RCVCCO 0x2000 /* Receive Collision Counter Overflow Interrupt */
#define RCVCCOM 0x1000 /* Receive Collision Counter Overflow Mask */
#define TXSTRT 0x0800 /* Transmit Start Status */
#define TXSTRTM 0x0400 /* Transmit Start Mask */
#define JAB 0x0200 /* Jabber Error */
#define JABM 0x0100 /* Jabber Error Mask */
/*
* Bit definitions for CSR15 (Mode Register)
*
* These values are already swap()ed!!
*/
#define PROM 0x0080 /* Promiscuous Mode */
#define DRCVBC 0x0040 /* Disable Receive Broadcast */
#define DRCVPA 0x0020 /* Disable Receive Physical Address */
#define DLNKTST 0x0010 /* Disable Link Status */
#define DAPC 0x0008 /* Disable Automatic Polarity Correction */
#define MENDECL 0x0004 /* MENDEC Loopback Mode */
#define LRTTSEL 0x0002 /* Low Receive Threshold/Transmit Mode Select */
#define PORTSEL1 0x0001 /* Port Select Bits */
#define PORTSEL2 0x8000 /* Port Select Bits */
#define INTL 0x4000 /* Internal Loopback */
#define DRTY 0x2000 /* Disable Retry */
#define FCOLL 0x1000 /* Force Collision */
#define DXMTFCS 0x0800 /* Disable Transmit CRC */
#define LOOP 0x0400 /* Loopback Enable */
#define DTX 0x0200 /* Disable Transmitter */
#define DRX 0x0100 /* Disable Receiver */
/*
* Bit definitions for ISACSR2 (Miscellaneous Configuration)
*
* These values are already swap()ed!!
*/
#define ASEL 0x0200 /* Media Interface Port Auto Select */
/*
* Bit definitions for ISACSR5-7 (LED1-3 Status)
*
* These values are already swap()ed!!
*/
#define LEDOUT 0x0080 /* Current LED Status */
#define PSE 0x8000 /* Pulse Stretcher Enable */
#define XMTE 0x1000 /* Enable Transmit Status Signal */
#define RVPOLE 0x0800 /* Enable Receive Polarity Signal */
#define RCVE 0x0400 /* Enable Receive Status Signal */
#define JABE 0x0200 /* Enable Jabber Signal */
#define COLE 0x0100 /* Enable Collision Signal */
/*
* Receive Descriptor Ring Entry
*/
struct RDRE {
volatile u_short RMD0; /* LADR[15:0] */
volatile u_short RMD1; /* HADR[23:16] | Receive Flags */
volatile u_short RMD2; /* Buffer Byte Count (two's complement) */
volatile u_short RMD3; /* Message Byte Count */
};
/*
* Transmit Descriptor Ring Entry
*/
struct TDRE {
volatile u_short TMD0; /* LADR[15:0] */
volatile u_short TMD1; /* HADR[23:16] | Transmit Flags */
volatile u_short TMD2; /* Buffer Byte Count (two's complement) */
volatile u_short TMD3; /* Error Flags */
};
/*
* Receive Flags
*/
#define RF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */
#define RF_ERR 0x0040 /* Error */
#define RF_FRAM 0x0020 /* Framing Error */
#define RF_OFLO 0x0010 /* Overflow Error */
#define RF_CRC 0x0008 /* CRC Error */
#define RF_BUFF 0x0004 /* Buffer Error */
#define RF_STP 0x0002 /* Start of Packet */
#define RF_ENP 0x0001 /* End of Packet */
/*
* Transmit Flags
*/
#define TF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */
#define TF_ERR 0x0040 /* Error */
#define TF_ADD_FCS 0x0020 /* Controls FCS Generation */
#define TF_MORE 0x0010 /* More than one retry needed */
#define TF_ONE 0x0008 /* One retry needed */
#define TF_DEF 0x0004 /* Deferred */
#define TF_STP 0x0002 /* Start of Packet */
#define TF_ENP 0x0001 /* End of Packet */
/*
* Error Flags
*/
#define EF_BUFF 0x0080 /* Buffer Error */
#define EF_UFLO 0x0040 /* Underflow Error */
#define EF_LCOL 0x0010 /* Late Collision */
#define EF_LCAR 0x0008 /* Loss of Carrier */
#define EF_RTRY 0x0004 /* Retry Error */
#define EF_TDR 0xff03 /* Time Domain Reflectometry */
/*
* MC68230 Parallel Interface/Timer
*/
struct MC68230 {
volatile u_char PGCR; /* Port General Control Register */
u_char Pad1[1];
volatile u_char PSRR; /* Port Service Request Register */
u_char Pad2[1];
volatile u_char PADDR; /* Port A Data Direction Register */
u_char Pad3[1];
volatile u_char PBDDR; /* Port B Data Direction Register */
u_char Pad4[1];
volatile u_char PCDDR; /* Port C Data Direction Register */
u_char Pad5[1];
volatile u_char PIVR; /* Port Interrupt Vector Register */
u_char Pad6[1];
volatile u_char PACR; /* Port A Control Register */
u_char Pad7[1];
volatile u_char PBCR; /* Port B Control Register */
u_char Pad8[1];
volatile u_char PADR; /* Port A Data Register */
u_char Pad9[1];
volatile u_char PBDR; /* Port B Data Register */
u_char Pad10[1];
volatile u_char PAAR; /* Port A Alternate Register */
u_char Pad11[1];
volatile u_char PBAR; /* Port B Alternate Register */
u_char Pad12[1];
volatile u_char PCDR; /* Port C Data Register */
u_char Pad13[1];
volatile u_char PSR; /* Port Status Register */
u_char Pad14[5];
volatile u_char TCR; /* Timer Control Register */
u_char Pad15[1];
volatile u_char TIVR; /* Timer Interrupt Vector Register */
u_char Pad16[3];
volatile u_char CPRH; /* Counter Preload Register (High) */
u_char Pad17[1];
volatile u_char CPRM; /* Counter Preload Register (Mid) */
u_char Pad18[1];
volatile u_char CPRL; /* Counter Preload Register (Low) */
u_char Pad19[3];
volatile u_char CNTRH; /* Count Register (High) */
u_char Pad20[1];
volatile u_char CNTRM; /* Count Register (Mid) */
u_char Pad21[1];
volatile u_char CNTRL; /* Count Register (Low) */
u_char Pad22[1];
volatile u_char TSR; /* Timer Status Register */
u_char Pad23[11];
};
/*
* Ariadne Expansion Board Structure
*/
#define ARIADNE_LANCE 0x360
#define ARIADNE_PIT 0x1000
#define ARIADNE_BOOTPROM 0x4000 /* I guess it's here :-) */
#define ARIADNE_BOOTPROM_SIZE 0x4000
#define ARIADNE_RAM 0x8000 /* Always access WORDs!! */
#define ARIADNE_RAM_SIZE 0x8000