1/* 2 * Amiga Linux/m68k Ariadne Ethernet Driver 3 * 4 * © Copyright 1995 by Geert Uytterhoeven (geert@linux-m68k.org) 5 * Peter De Schrijver 6 * (Peter.DeSchrijver@linux.cc.kuleuven.ac.be) 7 * 8 * ---------------------------------------------------------------------------------- 9 * 10 * This program is based on 11 * 12 * lance.c: An AMD LANCE ethernet driver for linux. 13 * Written 1993-94 by Donald Becker. 14 * 15 * Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller 16 * Advanced Micro Devices 17 * Publication #16907, Rev. B, Amendment/0, May 1994 18 * 19 * MC68230: Parallel Interface/Timer (PI/T) 20 * Motorola Semiconductors, December, 1983 21 * 22 * ---------------------------------------------------------------------------------- 23 * 24 * This file is subject to the terms and conditions of the GNU General Public 25 * License. See the file COPYING in the main directory of the Linux 26 * distribution for more details. 27 * 28 * ---------------------------------------------------------------------------------- 29 * 30 * The Ariadne is a Zorro-II board made by Village Tronic. It contains: 31 * 32 * - an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both 33 * 10BASE-2 (thin coax) and 10BASE-T (UTP) connectors 34 * 35 * - an MC68230 Parallel Interface/Timer configured as 2 parallel ports 36 */ 37 38 39 /* 40 * Am79C960 PCnet-ISA 41 */ 42 43struct Am79C960 { 44 volatile u_short AddressPROM[8]; 45 /* IEEE Address PROM (Unused in the Ariadne) */ 46 volatile u_short RDP; /* Register Data Port */ 47 volatile u_short RAP; /* Register Address Port */ 48 volatile u_short Reset; /* Reset Chip on Read Access */ 49 volatile u_short IDP; /* ISACSR Data Port */ 50}; 51 52 53 /* 54 * Am79C960 Control and Status Registers 55 * 56 * These values are already swap()ed!! 57 * 58 * Only registers marked with a `-' are intended for network software 59 * access 60 */ 61 62#define CSR0 0x0000 /* - PCnet-ISA Controller Status */ 63#define CSR1 0x0100 /* - IADR[15:0] */ 64#define CSR2 0x0200 /* - IADR[23:16] */ 65#define CSR3 0x0300 /* - Interrupt Masks and Deferral Control */ 66#define CSR4 0x0400 /* - Test and Features Control */ 67#define CSR6 0x0600 /* RCV/XMT Descriptor Table Length */ 68#define CSR8 0x0800 /* - Logical Address Filter, LADRF[15:0] */ 69#define CSR9 0x0900 /* - Logical Address Filter, LADRF[31:16] */ 70#define CSR10 0x0a00 /* - Logical Address Filter, LADRF[47:32] */ 71#define CSR11 0x0b00 /* - Logical Address Filter, LADRF[63:48] */ 72#define CSR12 0x0c00 /* - Physical Address Register, PADR[15:0] */ 73#define CSR13 0x0d00 /* - Physical Address Register, PADR[31:16] */ 74#define CSR14 0x0e00 /* - Physical Address Register, PADR[47:32] */ 75#define CSR15 0x0f00 /* - Mode Register */ 76#define CSR16 0x1000 /* Initialization Block Address Lower */ 77#define CSR17 0x1100 /* Initialization Block Address Upper */ 78#define CSR18 0x1200 /* Current Receive Buffer Address */ 79#define CSR19 0x1300 /* Current Receive Buffer Address */ 80#define CSR20 0x1400 /* Current Transmit Buffer Address */ 81#define CSR21 0x1500 /* Current Transmit Buffer Address */ 82#define CSR22 0x1600 /* Next Receive Buffer Address */ 83#define CSR23 0x1700 /* Next Receive Buffer Address */ 84#define CSR24 0x1800 /* - Base Address of Receive Ring */ 85#define CSR25 0x1900 /* - Base Address of Receive Ring */ 86#define CSR26 0x1a00 /* Next Receive Descriptor Address */ 87#define CSR27 0x1b00 /* Next Receive Descriptor Address */ 88#define CSR28 0x1c00 /* Current Receive Descriptor Address */ 89#define CSR29 0x1d00 /* Current Receive Descriptor Address */ 90#define CSR30 0x1e00 /* - Base Address of Transmit Ring */ 91#define CSR31 0x1f00 /* - Base Address of transmit Ring */ 92#define CSR32 0x2000 /* Next Transmit Descriptor Address */ 93#define CSR33 0x2100 /* Next Transmit Descriptor Address */ 94#define CSR34 0x2200 /* Current Transmit Descriptor Address */ 95#define CSR35 0x2300 /* Current Transmit Descriptor Address */ 96#define CSR36 0x2400 /* Next Next Receive Descriptor Address */ 97#define CSR37 0x2500 /* Next Next Receive Descriptor Address */ 98#define CSR38 0x2600 /* Next Next Transmit Descriptor Address */ 99#define CSR39 0x2700 /* Next Next Transmit Descriptor Address */ 100#define CSR40 0x2800 /* Current Receive Status and Byte Count */ 101#define CSR41 0x2900 /* Current Receive Status and Byte Count */ 102#define CSR42 0x2a00 /* Current Transmit Status and Byte Count */ 103#define CSR43 0x2b00 /* Current Transmit Status and Byte Count */ 104#define CSR44 0x2c00 /* Next Receive Status and Byte Count */ 105#define CSR45 0x2d00 /* Next Receive Status and Byte Count */ 106#define CSR46 0x2e00 /* Poll Time Counter */ 107#define CSR47 0x2f00 /* Polling Interval */ 108#define CSR48 0x3000 /* Temporary Storage */ 109#define CSR49 0x3100 /* Temporary Storage */ 110#define CSR50 0x3200 /* Temporary Storage */ 111#define CSR51 0x3300 /* Temporary Storage */ 112#define CSR52 0x3400 /* Temporary Storage */ 113#define CSR53 0x3500 /* Temporary Storage */ 114#define CSR54 0x3600 /* Temporary Storage */ 115#define CSR55 0x3700 /* Temporary Storage */ 116#define CSR56 0x3800 /* Temporary Storage */ 117#define CSR57 0x3900 /* Temporary Storage */ 118#define CSR58 0x3a00 /* Temporary Storage */ 119#define CSR59 0x3b00 /* Temporary Storage */ 120#define CSR60 0x3c00 /* Previous Transmit Descriptor Address */ 121#define CSR61 0x3d00 /* Previous Transmit Descriptor Address */ 122#define CSR62 0x3e00 /* Previous Transmit Status and Byte Count */ 123#define CSR63 0x3f00 /* Previous Transmit Status and Byte Count */ 124#define CSR64 0x4000 /* Next Transmit Buffer Address */ 125#define CSR65 0x4100 /* Next Transmit Buffer Address */ 126#define CSR66 0x4200 /* Next Transmit Status and Byte Count */ 127#define CSR67 0x4300 /* Next Transmit Status and Byte Count */ 128#define CSR68 0x4400 /* Transmit Status Temporary Storage */ 129#define CSR69 0x4500 /* Transmit Status Temporary Storage */ 130#define CSR70 0x4600 /* Temporary Storage */ 131#define CSR71 0x4700 /* Temporary Storage */ 132#define CSR72 0x4800 /* Receive Ring Counter */ 133#define CSR74 0x4a00 /* Transmit Ring Counter */ 134#define CSR76 0x4c00 /* - Receive Ring Length */ 135#define CSR78 0x4e00 /* - Transmit Ring Length */ 136#define CSR80 0x5000 /* - Burst and FIFO Threshold Control */ 137#define CSR82 0x5200 /* - Bus Activity Timer */ 138#define CSR84 0x5400 /* DMA Address */ 139#define CSR85 0x5500 /* DMA Address */ 140#define CSR86 0x5600 /* Buffer Byte Counter */ 141#define CSR88 0x5800 /* - Chip ID */ 142#define CSR89 0x5900 /* - Chip ID */ 143#define CSR92 0x5c00 /* Ring Length Conversion */ 144#define CSR94 0x5e00 /* Transmit Time Domain Reflectometry Count */ 145#define CSR96 0x6000 /* Bus Interface Scratch Register 0 */ 146#define CSR97 0x6100 /* Bus Interface Scratch Register 0 */ 147#define CSR98 0x6200 /* Bus Interface Scratch Register 1 */ 148#define CSR99 0x6300 /* Bus Interface Scratch Register 1 */ 149#define CSR104 0x6800 /* SWAP */ 150#define CSR105 0x6900 /* SWAP */ 151#define CSR108 0x6c00 /* Buffer Management Scratch */ 152#define CSR109 0x6d00 /* Buffer Management Scratch */ 153#define CSR112 0x7000 /* - Missed Frame Count */ 154#define CSR114 0x7200 /* - Receive Collision Count */ 155#define CSR124 0x7c00 /* - Buffer Management Unit Test */ 156 157 158 /* 159 * Am79C960 ISA Control and Status Registers 160 * 161 * These values are already swap()ed!! 162 */ 163 164#define ISACSR0 0x0000 /* Master Mode Read Active */ 165#define ISACSR1 0x0100 /* Master Mode Write Active */ 166#define ISACSR2 0x0200 /* Miscellaneous Configuration */ 167#define ISACSR4 0x0400 /* LED0 Status (Link Integrity) */ 168#define ISACSR5 0x0500 /* LED1 Status */ 169#define ISACSR6 0x0600 /* LED2 Status */ 170#define ISACSR7 0x0700 /* LED3 Status */ 171 172 173 /* 174 * Bit definitions for CSR0 (PCnet-ISA Controller Status) 175 * 176 * These values are already swap()ed!! 177 */ 178 179#define ERR 0x0080 /* Error */ 180#define BABL 0x0040 /* Babble: Transmitted too many bits */ 181#define CERR 0x0020 /* No Heartbeat (10BASE-T) */ 182#define MISS 0x0010 /* Missed Frame */ 183#define MERR 0x0008 /* Memory Error */ 184#define RINT 0x0004 /* Receive Interrupt */ 185#define TINT 0x0002 /* Transmit Interrupt */ 186#define IDON 0x0001 /* Initialization Done */ 187#define INTR 0x8000 /* Interrupt Flag */ 188#define INEA 0x4000 /* Interrupt Enable */ 189#define RXON 0x2000 /* Receive On */ 190#define TXON 0x1000 /* Transmit On */ 191#define TDMD 0x0800 /* Transmit Demand */ 192#define STOP 0x0400 /* Stop */ 193#define STRT 0x0200 /* Start */ 194#define INIT 0x0100 /* Initialize */ 195 196 197 /* 198 * Bit definitions for CSR3 (Interrupt Masks and Deferral Control) 199 * 200 * These values are already swap()ed!! 201 */ 202 203#define BABLM 0x0040 /* Babble Mask */ 204#define MISSM 0x0010 /* Missed Frame Mask */ 205#define MERRM 0x0008 /* Memory Error Mask */ 206#define RINTM 0x0004 /* Receive Interrupt Mask */ 207#define TINTM 0x0002 /* Transmit Interrupt Mask */ 208#define IDONM 0x0001 /* Initialization Done Mask */ 209#define DXMT2PD 0x1000 /* Disable Transmit Two Part Deferral */ 210#define EMBA 0x0800 /* Enable Modified Back-off Algorithm */ 211 212 213 /* 214 * Bit definitions for CSR4 (Test and Features Control) 215 * 216 * These values are already swap()ed!! 217 */ 218 219#define ENTST 0x0080 /* Enable Test Mode */ 220#define DMAPLUS 0x0040 /* Disable Burst Transaction Counter */ 221#define TIMER 0x0020 /* Timer Enable Register */ 222#define DPOLL 0x0010 /* Disable Transmit Polling */ 223#define APAD_XMT 0x0008 /* Auto Pad Transmit */ 224#define ASTRP_RCV 0x0004 /* Auto Pad Stripping */ 225#define MFCO 0x0002 /* Missed Frame Counter Overflow Interrupt */ 226#define MFCOM 0x0001 /* Missed Frame Counter Overflow Mask */ 227#define RCVCCO 0x2000 /* Receive Collision Counter Overflow Interrupt */ 228#define RCVCCOM 0x1000 /* Receive Collision Counter Overflow Mask */ 229#define TXSTRT 0x0800 /* Transmit Start Status */ 230#define TXSTRTM 0x0400 /* Transmit Start Mask */ 231#define JAB 0x0200 /* Jabber Error */ 232#define JABM 0x0100 /* Jabber Error Mask */ 233 234 235 /* 236 * Bit definitions for CSR15 (Mode Register) 237 * 238 * These values are already swap()ed!! 239 */ 240 241#define PROM 0x0080 /* Promiscuous Mode */ 242#define DRCVBC 0x0040 /* Disable Receive Broadcast */ 243#define DRCVPA 0x0020 /* Disable Receive Physical Address */ 244#define DLNKTST 0x0010 /* Disable Link Status */ 245#define DAPC 0x0008 /* Disable Automatic Polarity Correction */ 246#define MENDECL 0x0004 /* MENDEC Loopback Mode */ 247#define LRTTSEL 0x0002 /* Low Receive Threshold/Transmit Mode Select */ 248#define PORTSEL1 0x0001 /* Port Select Bits */ 249#define PORTSEL2 0x8000 /* Port Select Bits */ 250#define INTL 0x4000 /* Internal Loopback */ 251#define DRTY 0x2000 /* Disable Retry */ 252#define FCOLL 0x1000 /* Force Collision */ 253#define DXMTFCS 0x0800 /* Disable Transmit CRC */ 254#define LOOP 0x0400 /* Loopback Enable */ 255#define DTX 0x0200 /* Disable Transmitter */ 256#define DRX 0x0100 /* Disable Receiver */ 257 258 259 /* 260 * Bit definitions for ISACSR2 (Miscellaneous Configuration) 261 * 262 * These values are already swap()ed!! 263 */ 264 265#define ASEL 0x0200 /* Media Interface Port Auto Select */ 266 267 268 /* 269 * Bit definitions for ISACSR5-7 (LED1-3 Status) 270 * 271 * These values are already swap()ed!! 272 */ 273 274#define LEDOUT 0x0080 /* Current LED Status */ 275#define PSE 0x8000 /* Pulse Stretcher Enable */ 276#define XMTE 0x1000 /* Enable Transmit Status Signal */ 277#define RVPOLE 0x0800 /* Enable Receive Polarity Signal */ 278#define RCVE 0x0400 /* Enable Receive Status Signal */ 279#define JABE 0x0200 /* Enable Jabber Signal */ 280#define COLE 0x0100 /* Enable Collision Signal */ 281 282 283 /* 284 * Receive Descriptor Ring Entry 285 */ 286 287struct RDRE { 288 volatile u_short RMD0; /* LADR[15:0] */ 289 volatile u_short RMD1; /* HADR[23:16] | Receive Flags */ 290 volatile u_short RMD2; /* Buffer Byte Count (two's complement) */ 291 volatile u_short RMD3; /* Message Byte Count */ 292}; 293 294 295 /* 296 * Transmit Descriptor Ring Entry 297 */ 298 299struct TDRE { 300 volatile u_short TMD0; /* LADR[15:0] */ 301 volatile u_short TMD1; /* HADR[23:16] | Transmit Flags */ 302 volatile u_short TMD2; /* Buffer Byte Count (two's complement) */ 303 volatile u_short TMD3; /* Error Flags */ 304}; 305 306 307 /* 308 * Receive Flags 309 */ 310 311#define RF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */ 312#define RF_ERR 0x0040 /* Error */ 313#define RF_FRAM 0x0020 /* Framing Error */ 314#define RF_OFLO 0x0010 /* Overflow Error */ 315#define RF_CRC 0x0008 /* CRC Error */ 316#define RF_BUFF 0x0004 /* Buffer Error */ 317#define RF_STP 0x0002 /* Start of Packet */ 318#define RF_ENP 0x0001 /* End of Packet */ 319 320 321 /* 322 * Transmit Flags 323 */ 324 325#define TF_OWN 0x0080 /* PCnet-ISA controller owns the descriptor */ 326#define TF_ERR 0x0040 /* Error */ 327#define TF_ADD_FCS 0x0020 /* Controls FCS Generation */ 328#define TF_MORE 0x0010 /* More than one retry needed */ 329#define TF_ONE 0x0008 /* One retry needed */ 330#define TF_DEF 0x0004 /* Deferred */ 331#define TF_STP 0x0002 /* Start of Packet */ 332#define TF_ENP 0x0001 /* End of Packet */ 333 334 335 /* 336 * Error Flags 337 */ 338 339#define EF_BUFF 0x0080 /* Buffer Error */ 340#define EF_UFLO 0x0040 /* Underflow Error */ 341#define EF_LCOL 0x0010 /* Late Collision */ 342#define EF_LCAR 0x0008 /* Loss of Carrier */ 343#define EF_RTRY 0x0004 /* Retry Error */ 344#define EF_TDR 0xff03 /* Time Domain Reflectometry */ 345 346 347 348 /* 349 * MC68230 Parallel Interface/Timer 350 */ 351 352struct MC68230 { 353 volatile u_char PGCR; /* Port General Control Register */ 354 u_char Pad1[1]; 355 volatile u_char PSRR; /* Port Service Request Register */ 356 u_char Pad2[1]; 357 volatile u_char PADDR; /* Port A Data Direction Register */ 358 u_char Pad3[1]; 359 volatile u_char PBDDR; /* Port B Data Direction Register */ 360 u_char Pad4[1]; 361 volatile u_char PCDDR; /* Port C Data Direction Register */ 362 u_char Pad5[1]; 363 volatile u_char PIVR; /* Port Interrupt Vector Register */ 364 u_char Pad6[1]; 365 volatile u_char PACR; /* Port A Control Register */ 366 u_char Pad7[1]; 367 volatile u_char PBCR; /* Port B Control Register */ 368 u_char Pad8[1]; 369 volatile u_char PADR; /* Port A Data Register */ 370 u_char Pad9[1]; 371 volatile u_char PBDR; /* Port B Data Register */ 372 u_char Pad10[1]; 373 volatile u_char PAAR; /* Port A Alternate Register */ 374 u_char Pad11[1]; 375 volatile u_char PBAR; /* Port B Alternate Register */ 376 u_char Pad12[1]; 377 volatile u_char PCDR; /* Port C Data Register */ 378 u_char Pad13[1]; 379 volatile u_char PSR; /* Port Status Register */ 380 u_char Pad14[5]; 381 volatile u_char TCR; /* Timer Control Register */ 382 u_char Pad15[1]; 383 volatile u_char TIVR; /* Timer Interrupt Vector Register */ 384 u_char Pad16[3]; 385 volatile u_char CPRH; /* Counter Preload Register (High) */ 386 u_char Pad17[1]; 387 volatile u_char CPRM; /* Counter Preload Register (Mid) */ 388 u_char Pad18[1]; 389 volatile u_char CPRL; /* Counter Preload Register (Low) */ 390 u_char Pad19[3]; 391 volatile u_char CNTRH; /* Count Register (High) */ 392 u_char Pad20[1]; 393 volatile u_char CNTRM; /* Count Register (Mid) */ 394 u_char Pad21[1]; 395 volatile u_char CNTRL; /* Count Register (Low) */ 396 u_char Pad22[1]; 397 volatile u_char TSR; /* Timer Status Register */ 398 u_char Pad23[11]; 399}; 400 401 402 /* 403 * Ariadne Expansion Board Structure 404 */ 405 406#define ARIADNE_LANCE 0x360 407 408#define ARIADNE_PIT 0x1000 409 410#define ARIADNE_BOOTPROM 0x4000 /* I guess it's here :-) */ 411#define ARIADNE_BOOTPROM_SIZE 0x4000 412 413#define ARIADNE_RAM 0x8000 /* Always access WORDs!! */ 414#define ARIADNE_RAM_SIZE 0x8000 415 416