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 43 struct 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 Treshold/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 */ 286 287 struct 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 */ 298 299 struct 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 */ 351 352 struct 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