1 /************************************************************************** 2 Etherboot - BOOTP/TFTP Bootstrap Program 3 i82586 NIC driver for Etherboot 4 Ken Yap, January 1998 5 ***************************************************************************/ 6 7 /* 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2, or (at 11 * your option) any later version. 12 */ 13 14 #include "etherboot.h" 15 #include "nic.h" 16 #include "cards.h" 17 #include "timer.h" 18 19 #define udelay(n) waiton_timer2(((n)*TICKS_PER_MS)/1000) 20 21 /* Sources of information: 22 23 Donald Becker's excellent 3c507 driver in Linux 24 Intel 82596 data sheet (yes, 82596; it has a 586 compatibility mode) 25 */ 26 27 /* Code below mostly stolen wholesale from 3c507.c driver in Linux */ 28 29 /* 30 Details of the i82586. 31 32 You'll really need the databook to understand the details of this part, 33 but the outline is that the i82586 has two separate processing units. 34 Both are started from a list of three configuration tables, of which only 35 the last, the System Control Block (SCB), is used after reset-time. The SCB 36 has the following fields: 37 Status word 38 Command word 39 Tx/Command block addr. 40 Rx block addr. 41 The command word accepts the following controls for the Tx and Rx units: 42 */ 43 44 #define CUC_START 0x0100 45 #define CUC_RESUME 0x0200 46 #define CUC_SUSPEND 0x0300 47 #define RX_START 0x0010 48 #define RX_RESUME 0x0020 49 #define RX_SUSPEND 0x0030 50 51 /* The Rx unit uses a list of frame descriptors and a list of data buffer 52 descriptors. We use full-sized (1518 byte) data buffers, so there is 53 a one-to-one pairing of frame descriptors to buffer descriptors. 54 55 The Tx ("command") unit executes a list of commands that look like: 56 Status word Written by the 82586 when the command is done. 57 Command word Command in lower 3 bits, post-command action in upper 3 58 Link word The address of the next command. 59 Parameters (as needed). 60 61 Some definitions related to the Command Word are: 62 */ 63 #define CMD_EOL 0x8000 /* The last command of the list, stop. */ 64 #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */ 65 #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */ 66 67 enum commands { 68 CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3, 69 CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7}; 70 71 /* 72 Details of the EtherLink16 Implementation 73 74 The 3c507 and NI5210 are generic shared-memory i82586 implementations. 75 3c507: The host can map 16K, 32K, 48K, or 64K of the 64K memory into 76 0x0[CD][08]0000, or all 64K into 0xF[02468]0000. 77 NI5210: The host can map 8k or 16k at 0x[CDE][048C]000 but we 78 assume 8k because to have 16k you cannot put a ROM on the NIC. 79 */ 80 81 /* Offsets from the base I/O address. */ 82 83 #ifdef INCLUDE_3C507 84 85 #define SA_DATA 0 /* Station address data, or 3Com signature. */ 86 #define MISC_CTRL 6 /* Switch the SA_DATA banks, and bus config bits. */ 87 #define RESET_IRQ 10 /* Reset the latched IRQ line. */ 88 #define I82586_ATTN 11 /* Frob the 82586 Channel Attention line. */ 89 #define ROM_CONFIG 13 90 #define MEM_CONFIG 14 91 #define IRQ_CONFIG 15 92 #define EL16_IO_EXTENT 16 93 94 /* The ID port is used at boot-time to locate the ethercard. */ 95 #define ID_PORT 0x100 96 97 #endif 98 99 #ifdef INCLUDE_NI5210 100 101 #define NI52_RESET 0 /* writing to this address, resets the i82586 */ 102 #define I82586_ATTN 1 /* channel attention, kick the 586 */ 103 104 #endif 105 106 #ifdef INCLUDE_EXOS205 107 108 #define EXOS205_RESET 0 /* writing to this address, resets the i82586 */ 109 #define I82586_ATTN 1 /* channel attention, kick the 586 */ 110 111 #endif 112 113 /* Offsets to registers in the mailbox (SCB). */ 114 #define iSCB_STATUS 0x8 115 #define iSCB_CMD 0xA 116 #define iSCB_CBL 0xC /* Command BLock offset. */ 117 #define iSCB_RFA 0xE /* Rx Frame Area offset. */ 118 119 /* Since the 3c507 maps the shared memory window so that the last byte is 120 at 82586 address FFFF, the first byte is at 82586 address 0, 16K, 32K, or 121 48K corresponding to window sizes of 64K, 48K, 32K and 16K respectively. 122 We can account for this be setting the 'SBC Base' entry in the ISCP table 123 below for all the 16 bit offset addresses, and also adding the 'SCB Base' 124 value to all 24 bit physical addresses (in the SCP table and the TX and RX 125 Buffer Descriptors). 126 -Mark 127 */ 128 129 /* 130 What follows in 'init_words[]' is the "program" that is downloaded to the 131 82586 memory. It's mostly tables and command blocks, and starts at the 132 reset address 0xfffff6. This is designed to be similar to the EtherExpress, 133 thus the unusual location of the SCB at 0x0008. 134 135 Even with the additional "don't care" values, doing it this way takes less 136 program space than initializing the individual tables, and I feel it's much 137 cleaner. 138 139 The databook is particularly useless for the first two structures, I had 140 to use the Crynwr driver as an example. 141 142 The memory setup is as follows: 143 */ 144 145 #define CONFIG_CMD 0x18 146 #define SET_SA_CMD 0x24 147 #define SA_OFFSET 0x2A 148 #define IDLELOOP 0x30 149 #define TDR_CMD 0x38 150 #define TDR_TIME 0x3C 151 #define DUMP_CMD 0x40 152 #define DIAG_CMD 0x48 153 #define SET_MC_CMD 0x4E 154 #define DUMP_DATA 0x56 /* A 170 byte buffer for dump and Set-MC into. */ 155 156 #define TX_BUF_START 0x0100 157 #define TX_BUF_SIZE (1518+14+20+16) /* packet+header+TBD */ 158 159 #define RX_BUF_START 0x1000 160 #define RX_BUF_SIZE (1518+14+18) /* packet+header+RBD */ 161 #define RX_BUF_END (mem_end - mem_start - 20) 162 163 /* 164 That's it: only 86 bytes to set up the beast, including every extra 165 command available. The 170 byte buffer at DUMP_DATA is shared between the 166 Dump command (called only by the diagnostic program) and the SetMulticastList 167 command. 168 169 To complete the memory setup you only have to write the station address at 170 SA_OFFSET and create the Tx & Rx buffer lists. 171 172 The Tx command chain and buffer list is setup as follows: 173 A Tx command table, with the data buffer pointing to... 174 A Tx data buffer descriptor. The packet is in a single buffer, rather than 175 chaining together several smaller buffers. 176 A NoOp command, which initially points to itself, 177 And the packet data. 178 179 A transmit is done by filling in the Tx command table and data buffer, 180 re-writing the NoOp command, and finally changing the offset of the last 181 command to point to the current Tx command. When the Tx command is finished, 182 it jumps to the NoOp, when it loops until the next Tx command changes the 183 "link offset" in the NoOp. This way the 82586 never has to go through the 184 slow restart sequence. 185 186 The Rx buffer list is set up in the obvious ring structure. We have enough 187 memory (and low enough interrupt latency) that we can avoid the complicated 188 Rx buffer linked lists by alway associating a full-size Rx data buffer with 189 each Rx data frame. 190 191 I currently use one transmit buffer starting at TX_BUF_START (0x0100), and 192 use the rest of memory, from RX_BUF_START to RX_BUF_END, for Rx buffers. 193 194 */ 195 196 static unsigned short init_words[] = { 197 /* System Configuration Pointer (SCP). */ 198 #if defined(INCLUDE_3C507) 199 0x0000, /* Set bus size to 16 bits. */ 200 #else 201 0x0001, /* Set bus size to 8 bits */ 202 #endif 203 0,0, /* pad words. */ 204 0x0000,0x0000, /* ISCP phys addr, set in init_82586_mem(). */ 205 206 /* Intermediate System Configuration Pointer (ISCP). */ 207 0x0001, /* Status word that's cleared when init is done. */ 208 0x0008,0,0, /* SCB offset, (skip, skip) */ 209 210 /* System Control Block (SCB). */ 211 0,0xf000|RX_START|CUC_START, /* SCB status and cmd. */ 212 CONFIG_CMD, /* Command list pointer, points to Configure. */ 213 RX_BUF_START, /* Rx block list. */ 214 0,0,0,0, /* Error count: CRC, align, buffer, overrun. */ 215 216 /* 0x0018: Configure command. Change to put MAC data with packet. */ 217 0, CmdConfigure, /* Status, command. */ 218 SET_SA_CMD, /* Next command is Set Station Addr. */ 219 0x0804, /* "4" bytes of config data, 8 byte FIFO. */ 220 0x2e40, /* Magic values, including MAC data location. */ 221 0, /* Unused pad word. */ 222 223 /* 0x0024: Setup station address command. */ 224 0, CmdSASetup, 225 SET_MC_CMD, /* Next command. */ 226 0xaa00,0xb000,0x0bad, /* Station address (to be filled in) */ 227 228 /* 0x0030: NOP, looping back to itself. Point to first Tx buffer to Tx. */ 229 0, CmdNOp, IDLELOOP, 0 /* pad */, 230 231 /* 0x0038: A unused Time-Domain Reflectometer command. */ 232 0, CmdTDR, IDLELOOP, 0, 233 234 /* 0x0040: An unused Dump State command. */ 235 0, CmdDump, IDLELOOP, DUMP_DATA, 236 237 /* 0x0048: An unused Diagnose command. */ 238 0, CmdDiagnose, IDLELOOP, 239 240 /* 0x004E: An empty set-multicast-list command. */ 241 0, CmdMulticastList, IDLELOOP, 0, 242 }; 243 244 /* NIC specific static variables go here */ 245 246 static unsigned short ioaddr, irq, scb_base; 247 static Address mem_start, mem_end; 248 static unsigned short rx_head, rx_tail; 249 250 #define read_mem(m,s) fmemcpy((char *)s, m, sizeof(s)) 251 252 static void setup_rx_buffers(struct nic *nic) 253 { 254 Address write_ptr; 255 unsigned short cur_rx_buf; 256 static unsigned short rx_cmd[16] = { 257 0x0000, /* Rx status */ 258 0x0000, /* Rx command, only and last */ 259 RX_BUF_START, /* Link (will be adjusted) */ 260 RX_BUF_START + 22, /* Buffer offset (will be adjusted) */ 261 0x0000, 0x0000, 0x0000, /* Pad for dest addr */ 262 0x0000, 0x0000, 0x0000, /* Pad for source addr */ 263 0x0000, /* Pad for protocol */ 264 0x0000, /* Buffer: Actual count */ 265 -1, /* Buffer: Next (none) */ 266 RX_BUF_START + 0x20, /* Buffer: Address low (+ scb_base) (will be adjusted) */ 267 0x0000, /* Buffer: Address high */ 268 0x8000 | (RX_BUF_SIZE - 0x20) 269 }; 270 271 cur_rx_buf = rx_head = RX_BUF_START; 272 do { /* While there is room for one more buffer */ 273 write_ptr = mem_start + cur_rx_buf; 274 /* adjust some contents */ 275 rx_cmd[1] = 0x0000; 276 rx_cmd[2] = cur_rx_buf + RX_BUF_SIZE; 277 rx_cmd[3] = cur_rx_buf + 22; 278 rx_cmd[13] = cur_rx_buf + 0x20 + scb_base; 279 memcpy((char *)write_ptr, (char *)rx_cmd, sizeof(rx_cmd)); 280 rx_tail = cur_rx_buf; 281 cur_rx_buf += RX_BUF_SIZE; 282 } while (cur_rx_buf <= RX_BUF_END - RX_BUF_SIZE); 283 /* Terminate the list by setting the EOL bit and wrap ther pointer 284 to make the list a ring. */ 285 write_ptr = mem_start + rx_tail; 286 rx_cmd[1] = 0xC000; 287 rx_cmd[2] = rx_head; 288 memcpy((char *)write_ptr, (char *)rx_cmd, sizeof(unsigned short) * 3); 289 } 290 291 static void ack_status(void) 292 { 293 unsigned short cmd, status; 294 unsigned short *shmem = (short *)mem_start; 295 296 cmd = (status = shmem[iSCB_STATUS>>1]) & 0xf000; 297 if (status & 0x100) /* CU suspended? */ 298 cmd |= CUC_RESUME; 299 if ((status & 0x200) == 0) /* CU not active? */ 300 cmd |= CUC_START; 301 if (status & 0x010) /* RU suspended? */ 302 cmd |= RX_RESUME; 303 else if ((status & 0x040) == 0) /* RU not active? */ 304 cmd |= RX_START; 305 if (cmd == 0) /* Nothing to do */ 306 return; 307 shmem[iSCB_CMD>>1] = cmd; 308 #if defined(DEBUG) 309 printf("Status %hX Command %hX\n", status, cmd); 310 #endif 311 outb(0, ioaddr + I82586_ATTN); 312 } 313 314 /************************************************************************** 315 RESET - Reset adapter 316 ***************************************************************************/ 317 318 static void i82586_reset(struct nic *nic) 319 { 320 unsigned long time; 321 unsigned short *shmem = (short *)mem_start; 322 323 /* put the card in its initial state */ 324 325 #ifdef INCLUDE_3C507 326 /* Enable loopback to protect the wire while starting up, 327 and hold the 586 in reset during the memory initialisation. */ 328 outb(0x20, ioaddr + MISC_CTRL); 329 #endif 330 331 /* Fix the ISCP address and base. */ 332 init_words[3] = scb_base; 333 init_words[7] = scb_base; 334 335 /* Write the words at 0xfff6. */ 336 /* Write the words at 0x0000. */ 337 /* Fill in the station address. */ 338 memcpy((char *)(mem_end - 10), (char *)init_words, 10); 339 memcpy((char *)mem_start, (char *)&init_words[5], sizeof(init_words) - 10); 340 memcpy((char *)mem_start + SA_OFFSET, nic->node_addr, ETH_ALEN); 341 setup_rx_buffers(nic); 342 343 #ifdef INCLUDE_3C507 344 /* Start the 586 by releasing the reset line, but leave loopback. */ 345 outb(0xA0, ioaddr + MISC_CTRL); 346 #endif 347 348 /* This was time consuming to track down; you need to give two channel 349 attention signals to reliably start up the i82586. */ 350 outb(0, ioaddr + I82586_ATTN); 351 time = currticks() + TICKS_PER_SEC; /* allow 1 second to init */ 352 while ( 353 shmem[iSCB_STATUS>>1] == 0) 354 { 355 if (currticks() > time) 356 { 357 printf("i82586 initialisation timed out with status %hX, cmd %hX\n", 358 shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]); 359 break; 360 } 361 } 362 /* Issue channel-attn -- the 82586 won't start. */ 363 outb(0, ioaddr + I82586_ATTN); 364 365 #ifdef INCLUDE_3C507 366 /* Disable loopback. */ 367 outb(0x80, ioaddr + MISC_CTRL); 368 #endif 369 #if defined(DEBUG) 370 printf("i82586 status %hX, cmd %hX\n", 371 shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]); 372 #endif 373 } 374 375 /************************************************************************** 376 POLL - Wait for a frame 377 ***************************************************************************/ 378 static int i82586_poll(struct nic *nic) 379 { 380 int status; 381 unsigned short rfd_cmd, next_rx_frame, data_buffer_addr, 382 frame_status, pkt_len; 383 unsigned short *shmem = (short *)mem_start + rx_head; 384 385 /* return true if there's an ethernet packet ready to read */ 386 if ( 387 ((frame_status = shmem[0]) & 0x8000) == 0) 388 return (0); /* nope */ 389 rfd_cmd = shmem[1]; 390 next_rx_frame = shmem[2]; 391 data_buffer_addr = shmem[3]; 392 pkt_len = shmem[11]; 393 status = 0; 394 if (rfd_cmd != 0 || data_buffer_addr != rx_head + 22 395 || (pkt_len & 0xC000) != 0xC000) 396 printf("\nRx frame corrupt, discarded"); 397 else if ((frame_status & 0x2000) == 0) 398 printf("\nRx frame had error"); 399 else 400 { 401 /* We have a frame, copy it to our buffer */ 402 pkt_len &= 0x3FFF; 403 memcpy(nic->packet, (char *)mem_start + rx_head + 0x20, pkt_len); 404 /* Only packets not from ourself */ 405 if (memcmp(nic->packet + ETH_ALEN, nic->node_addr, ETH_ALEN) != 0) 406 { 407 nic->packetlen = pkt_len; 408 status = 1; 409 } 410 } 411 /* Clear the status word and set EOL on Rx frame */ 412 shmem[0] = 0; 413 shmem[1] = 0xC000; 414 *(short *)(mem_start + rx_tail + 2) = 0; 415 rx_tail = rx_head; 416 rx_head = next_rx_frame; 417 ack_status(); 418 return (status); 419 } 420 421 /************************************************************************** 422 TRANSMIT - Transmit a frame 423 ***************************************************************************/ 424 static void i82586_transmit( 425 struct nic *nic, 426 const char *d, /* Destination */ 427 unsigned int t, /* Type */ 428 unsigned int s, /* size */ 429 const char *p) /* Packet */ 430 { 431 Address bptr; 432 unsigned short type, z; 433 static unsigned short tx_cmd[11] = { 434 0x0, /* Tx status */ 435 CmdTx, /* Tx command */ 436 TX_BUF_START+16, /* Next command is a NoOp */ 437 TX_BUF_START+8, /* Data Buffer offset */ 438 0x8000, /* | with size */ 439 0xffff, /* No next data buffer */ 440 TX_BUF_START+22, /* + scb_base */ 441 0x0, /* Buffer address high bits (always zero) */ 442 0x0, /* Nop status */ 443 CmdNOp, /* Nop command */ 444 TX_BUF_START+16 /* Next is myself */ 445 }; 446 unsigned short *shmem = (short *)mem_start + TX_BUF_START; 447 448 /* send the packet to destination */ 449 /* adjust some contents */ 450 type = htons(t); 451 if (s < ETH_ZLEN) 452 s = ETH_ZLEN; 453 tx_cmd[4] = (s + ETH_HLEN) | 0x8000; 454 tx_cmd[6] = TX_BUF_START + 22 + scb_base; 455 bptr = mem_start + TX_BUF_START; 456 memcpy((char *)bptr, (char *)tx_cmd, sizeof(tx_cmd)); 457 bptr += sizeof(tx_cmd); 458 memcpy((char *)bptr, d, ETH_ALEN); 459 bptr += ETH_ALEN; 460 memcpy((char *)bptr, nic->node_addr, ETH_ALEN); 461 bptr += ETH_ALEN; 462 memcpy((char *)bptr, (char *)&type, sizeof(type)); 463 bptr += sizeof(type); 464 memcpy((char *)bptr, p, s); 465 /* Change the offset in the IDLELOOP */ 466 *(unsigned short *)(mem_start + IDLELOOP + 4) = TX_BUF_START; 467 /* Wait for transmit completion */ 468 while ( 469 (shmem[0] & 0x2000) == 0) 470 ; 471 /* Change the offset in the IDLELOOP back and 472 change the final loop to point here */ 473 *(unsigned short *)(mem_start + IDLELOOP + 4) = IDLELOOP; 474 *(unsigned short *)(mem_start + TX_BUF_START + 20) = IDLELOOP; 475 ack_status(); 476 } 477 478 /************************************************************************** 479 DISABLE - Turn off ethernet interface 480 ***************************************************************************/ 481 static void i82586_disable(struct nic *nic) 482 { 483 unsigned short *shmem = (short *)mem_start; 484 485 #if 0 486 /* Flush the Tx and disable Rx. */ 487 shmem[iSCB_CMD>>1] = RX_SUSPEND | CUC_SUSPEND; 488 outb(0, ioaddr + I82586_ATTN); 489 #ifdef INCLUDE_NI5210 490 outb(0, ioaddr + NI52_RESET); 491 #endif 492 #endif /* 0 */ 493 } 494 495 #ifdef INCLUDE_3C507 496 497 static int t507_probe1(struct nic *nic, unsigned short ioaddr) 498 { 499 int i; 500 Address size; 501 char mem_config; 502 char if_port; 503 504 if (inb(ioaddr) != '*' || inb(ioaddr+1) != '3' 505 || inb(ioaddr+2) != 'C' || inb(ioaddr+3) != 'O') 506 return (0); 507 irq = inb(ioaddr + IRQ_CONFIG) & 0x0f; 508 mem_config = inb(ioaddr + MEM_CONFIG); 509 if (mem_config & 0x20) 510 { 511 size = 65536L; 512 mem_start = 0xf00000L + (mem_config & 0x08 ? 0x080000L 513 : (((Address)mem_config & 0x3) << 17)); 514 } 515 else 516 { 517 size = ((((Address)mem_config & 0x3) + 1) << 14); 518 mem_start = 0x0c0000L + (((Address)mem_config & 0x18) << 12); 519 } 520 mem_end = mem_start + size; 521 scb_base = 65536L - size; 522 if_port = inb(ioaddr + ROM_CONFIG) & 0x80; 523 /* Get station address */ 524 outb(0x01, ioaddr + MISC_CTRL); 525 for (i = 0; i < ETH_ALEN; ++i) 526 { 527 nic->node_addr[i] = inb(ioaddr+i); 528 } 529 printf("\n3c507 ioaddr %#hX, IRQ %d, mem [%#X-%#X], %sternal xcvr, addr %!\n", 530 ioaddr, irq, mem_start, mem_end, if_port ? "in" : "ex", nic->node_addr); 531 return (1); 532 } 533 534 /************************************************************************** 535 PROBE - Look for an adapter, this routine's visible to the outside 536 ***************************************************************************/ 537 538 struct nic *t507_probe(struct nic *nic, unsigned short *probe_addrs) 539 { 540 static unsigned char init_ID_done = 0; 541 unsigned short lrs_state = 0xff; 542 static unsigned short io_addrs[] = { 0x300, 0x320, 0x340, 0x280, 0 }; 543 unsigned short *p; 544 int i; 545 546 if (init_ID_done == 0) 547 { 548 /* Send the ID sequence to the ID_PORT to enable the board */ 549 outb(0x00, ID_PORT); 550 for (i = 0; i < 255; ++i) 551 { 552 outb(lrs_state, ID_PORT); 553 lrs_state <<= 1; 554 if (lrs_state & 0x100) 555 lrs_state ^= 0xe7; 556 } 557 outb(0x00, ID_PORT); 558 init_ID_done = 1; 559 } 560 /* if probe_addrs is 0, then routine can use a hardwired default */ 561 if (probe_addrs == 0) 562 probe_addrs = io_addrs; 563 for (p = probe_addrs; (ioaddr = *p) != 0; ++p) 564 if (t507_probe1(nic, ioaddr)) 565 break; 566 if (ioaddr != 0) 567 { 568 /* point to NIC specific routines */ 569 i82586_reset(nic); 570 nic->reset = i82586_reset; 571 nic->poll = i82586_poll; 572 nic->transmit = i82586_transmit; 573 nic->disable = i82586_disable; 574 return nic; 575 } 576 /* else */ 577 { 578 return 0; 579 } 580 } 581 582 #endif 583 584 #ifdef INCLUDE_NI5210 585 586 static int ni5210_probe2(void) 587 { 588 unsigned short i; 589 unsigned short shmem[10]; 590 591 /* Fix the ISCP address and base. */ 592 init_words[3] = scb_base; 593 init_words[7] = scb_base; 594 595 /* Write the words at 0xfff6. */ 596 /* Write the words at 0x0000. */ 597 memcpy((char *)(mem_end - 10), (char *)init_words, 10); 598 memcpy((char *)mem_start, (char *)&init_words[5], sizeof(init_words) - 10); 599 if (*(unsigned short *)mem_start != 1) 600 return (0); 601 outb(0, ioaddr + NI52_RESET); 602 outb(0, ioaddr + I82586_ATTN); 603 udelay(32); 604 i = 50; 605 while ( 606 shmem[iSCB_STATUS>>1] == 0) 607 { 608 if (--i == 0) 609 { 610 printf("i82586 initialisation timed out with status %hX, cmd %hX\n", 611 shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]); 612 break; 613 } 614 } 615 /* Issue channel-attn -- the 82586 won't start. */ 616 outb(0, ioaddr + I82586_ATTN); 617 if (*(unsigned short *)mem_start != 0) 618 return (0); 619 return (1); 620 } 621 622 static int ni5210_probe1(struct nic *nic) 623 { 624 int i; 625 static Address mem_addrs[] = { 626 0xc0000, 0xc4000, 0xc8000, 0xcc000, 627 0xd0000, 0xd4000, 0xd8000, 0xdc000, 628 0xe0000, 0xe4000, 0xe8000, 0xec000, 629 0 }; 630 Address *p; 631 632 if (inb(ioaddr + 6) != 0x0 || inb(ioaddr + 7) != 0x55) 633 return (0); 634 scb_base = -8192; /* assume 8k memory */ 635 for (p = mem_addrs; (mem_start = *p) != 0; ++p) 636 if (mem_end = mem_start + 8192, ni5210_probe2()) 637 break; 638 if (mem_start == 0) 639 return (0); 640 /* Get station address */ 641 for (i = 0; i < ETH_ALEN; ++i) 642 { 643 nic->node_addr[i] = inb(ioaddr+i); 644 } 645 printf("\nNI5210 ioaddr %#hX, mem [%#X-%#X], addr %!\n", 646 ioaddr, mem_start, mem_end, nic->node_addr); 647 return (1); 648 } 649 650 struct nic *ni5210_probe(struct nic *nic, unsigned short *probe_addrs) 651 { 652 /* missing entries are addresses usually already used */ 653 static unsigned short io_addrs[] = { 654 0x200, 0x208, 0x210, 0x218, 0x220, 0x228, 0x230, 0x238, 655 0x240, 0x248, 0x250, 0x258, 0x260, 0x268, 0x270, /*Par*/ 656 0x280, 0x288, 0x290, 0x298, 0x2A0, 0x2A8, 0x2B0, 0x2B8, 657 0x2C0, 0x2C8, 0x2D0, 0x2D8, 0x2E0, 0x2E8, 0x2F0, /*Ser*/ 658 0x300, 0x308, 0x310, 0x318, 0x320, 0x328, 0x330, 0x338, 659 0x340, 0x348, 0x350, 0x358, 0x360, 0x368, 0x370, /*Par*/ 660 0x380, 0x388, 0x390, 0x398, 0x3A0, 0x3A8, /*Vid,Par*/ 661 0x3C0, 0x3C8, 0x3D0, 0x3D8, 0x3E0, 0x3E8, /*Ser*/ 662 0x0 663 }; 664 unsigned short *p; 665 int i; 666 667 /* if probe_addrs is 0, then routine can use a hardwired default */ 668 if (probe_addrs == 0) 669 probe_addrs = io_addrs; 670 for (p = probe_addrs; (ioaddr = *p) != 0; ++p) 671 if (ni5210_probe1(nic)) 672 break; 673 if (ioaddr != 0) 674 { 675 /* point to NIC specific routines */ 676 i82586_reset(nic); 677 nic->reset = i82586_reset; 678 nic->poll = i82586_poll; 679 nic->transmit = i82586_transmit; 680 nic->disable = i82586_disable; 681 return nic; 682 } 683 /* else */ 684 { 685 return 0; 686 } 687 } 688 #endif 689 690 #ifdef INCLUDE_EXOS205 691 692 /* 693 * Code to download to I186 in EXOS205 694 */ 695 696 static unsigned char exos_i186_init[] = 697 { 698 0x08,0x00,0x14,0x00,0x00,0x00,0xaa,0xfa,0x33,0xc0,0xba,0xfe,0xff,0xef,0xb8,0xf8, 699 0xff,0xe7,0xa0,0xb8,0x7c,0x00,0xe7,0xa4,0xb8,0xbc,0x80,0xe7,0xa8,0x8c,0xc8,0x8e, 700 0xd8,0xbb,0x2f,0x0e,0xc6,0x07,0xa5,0x33,0xc9,0xeb,0x00,0xeb,0x00,0xeb,0x00,0xe2, 701 0xf8,0xbe,0x2c,0x0e,0xba,0x02,0x05,0x33,0xdb,0xb9,0x03,0x00,0xec,0x24,0x0f,0x8a, 702 0xe0,0x02,0xd8,0x42,0x42,0xec,0x02,0xd8,0xd0,0xe0,0xd0,0xe0,0xd0,0xe0,0xd0,0xe0, 703 0x0a,0xc4,0x88,0x04,0x42,0x42,0x46,0xe2,0xe3,0x8a,0xe3,0xd0,0xec,0xd0,0xec,0xd0, 704 0xec,0xd0,0xec,0x80,0xe3,0x0f,0x02,0xe3,0x80,0xf4,0x05,0xec,0x3a,0xe0,0x74,0x05, 705 0xc6,0x04,0x5a,0xeb,0xfe,0xc6,0x04,0x55,0x33,0xc0,0x8e,0xd8,0xbe,0x38,0x00,0xc7, 706 0x04,0xce,0x0e,0x46,0x46,0xc7,0x04,0x00,0xff,0xfb,0xba,0x3c,0x00,0xb8,0x03,0x00, 707 0xef,0x33,0xdb,0x33,0xc9,0xbd,0x04,0x0f,0x90,0x90,0x90,0x90,0xe2,0xfa,0x43,0x2e, 708 0x89,0x5e,0x00,0xeb,0xf3,0x52,0xba,0x00,0x06,0xef,0x50,0x53,0x55,0xbd,0xf8,0x0e, 709 0x2e,0x8b,0x5e,0x00,0x43,0x2e,0x89,0x5e,0x00,0xba,0x22,0x00,0xb8,0x00,0x80,0xef, 710 0x5d,0x5b,0x58,0x5a,0xcf,0x49,0x4e,0x54,0x52,0x20,0x63,0x6e,0x74,0x2d,0x3e,0x00, 711 0x00,0x4c,0x4f,0x4f,0x50,0x20,0x63,0x6e,0x74,0x2d,0x3e,0x00,0x00,0x00,0x00,0x00, 712 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 713 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 714 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 715 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 716 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 717 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 718 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 719 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 720 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 721 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 722 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 723 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 724 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 725 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 726 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xea,0x30,0x0e,0x00,0xff,0x00,0x00,0x00,0x00, 727 0x00,0x00,0x00,0x00,0x00,0x00,00 728 }; 729 730 /* These offsets are from the end of the i186 download code */ 731 732 #define OFFSET_SEMA 0x1D1 733 #define OFFSET_ADDR 0x1D7 734 735 static int exos205_probe2(void) 736 { 737 unsigned short i; 738 unsigned short shmem[10]; 739 740 /* Fix the ISCP address and base. */ 741 init_words[3] = scb_base; 742 init_words[7] = scb_base; 743 744 /* Write the words at 0xfff6. */ 745 /* Write the words at 0x0000. */ 746 memcpy((char *)(mem_end - 10), (char *)init_words, 10); 747 memcpy((char *)mem_start, (char *)&init_words[5], sizeof(init_words) - 10); 748 if (*(unsigned short *)mem_start != 1) 749 return (0); 750 outb(0, ioaddr + EXOS205_RESET); 751 outb(0, ioaddr + I82586_ATTN); 752 i = 50; 753 while ( 754 shmem[iSCB_STATUS>>1] == 0) 755 { 756 if (--i == 0) 757 { 758 printf("i82586 initialisation timed out with status %hX, cmd %hX\n", 759 shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]); 760 break; 761 } 762 } 763 /* Issue channel-attn -- the 82586 won't start. */ 764 outb(0, ioaddr + I82586_ATTN); 765 if (*(unsigned short *)mem_start != 0) 766 return (0); 767 return (1); 768 } 769 770 static int exos205_probe1(struct nic *nic) 771 { 772 int i; 773 /* If you know the other addresses please let me know */ 774 static Address mem_addrs[] = { 775 0xcc000, 0 }; 776 Address *p; 777 778 scb_base = -16384; /* assume 8k memory */ 779 for (p = mem_addrs; (mem_start = *p) != 0; ++p) 780 if (mem_end = mem_start + 16384, exos205_probe2()) 781 break; 782 if (mem_start == 0) 783 return (0); 784 /* Get station address */ 785 for (i = 0; i < ETH_ALEN; ++i) 786 { 787 nic->node_addr[i] = inb(ioaddr+i); 788 } 789 printf("\nEXOS205 ioaddr %#hX, mem [%#X-%#X], addr %!\n", 790 ioaddr, mem_start, mem_end, nic->node_addr); 791 return (1); 792 } 793 794 struct nic *exos205_probe(struct nic *nic, unsigned short *probe_addrs) 795 { 796 /* If you know the other addresses, please let me know */ 797 static unsigned short io_addrs[] = { 798 0x310, 0x0 799 }; 800 unsigned short *p; 801 int i; 802 803 /* if probe_addrs is 0, then routine can use a hardwired default */ 804 if (probe_addrs == 0) 805 probe_addrs = io_addrs; 806 for (p = probe_addrs; (ioaddr = *p) != 0; ++p) 807 if (exos205_probe1(nic)) 808 break; 809 if (ioaddr != 0) 810 { 811 /* point to NIC specific routines */ 812 i82586_reset(nic); 813 nic->reset = i82586_reset; 814 nic->poll = i82586_poll; 815 nic->transmit = i82586_transmit; 816 nic->disable = i82586_disable; 817 return nic; 818 } 819 /* else */ 820 { 821 return 0; 822 } 823 } 824 825 #endif 826
