1
/**************************************************************************
2
Etherboot - BOOTP/TFTP Bootstrap Program
3
i82586 NIC driver for Etherboot
5
***************************************************************************/
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.
14
#include "etherboot.h"
19
#define udelay(n) waiton_timer2(((n)*TICKS_PER_MS)/1000)
21
/* Sources of information:
23
Donald Becker's excellent 3c507 driver in Linux
24
Intel 82596 data sheet (yes, 82596; it has a 586 compatibility mode)
27
/* Code below mostly stolen wholesale from 3c507.c driver in Linux */
30
Details of the i82586.
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:
39
Tx/Command block addr.
41
The command word accepts the following controls for the Tx and Rx units:
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
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.
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).
61
Some definitions related to the Command Word are:
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. */
68
CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
69
CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7};
72
Details of the EtherLink16 Implementation
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.
81
/* Offsets from the base I/O address. */
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. */
92
#define EL16_IO_EXTENT 16
94
/* The ID port is used at boot-time to locate the ethercard. */
101
#define NI52_RESET 0 /* writing to this address, resets the i82586 */
102
#define I82586_ATTN 1 /* channel attention, kick the 586 */
106
#ifdef INCLUDE_EXOS205
108
#define EXOS205_RESET 0 /* writing to this address, resets the i82586 */
109
#define I82586_ATTN 1 /* channel attention, kick the 586 */
113
/* Offsets to registers in the mailbox (SCB). */
114
#define iSCB_STATUS 0x8
116
#define iSCB_CBL 0xC /* Command BLock offset. */
117
#define iSCB_RFA 0xE /* Rx Frame Area offset. */
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
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.
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
139
The databook is particularly useless for the first two structures, I had
140
to use the Crynwr driver as an example.
142
The memory setup is as follows:
145
#define CONFIG_CMD 0x18
146
#define SET_SA_CMD 0x24
147
#define SA_OFFSET 0x2A
148
#define IDLELOOP 0x30
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. */
156
#define TX_BUF_START 0x0100
157
#define TX_BUF_SIZE (1518+14+20+16) /* packet+header+TBD */
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)
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
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.
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,
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.
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
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.
196
static unsigned short init_words[] = {
197
/* System Configuration Pointer (SCP). */
198
#if defined(INCLUDE_3C507)
199
0x0000, /* Set bus size to 16 bits. */
201
0x0001, /* Set bus size to 8 bits */
203
0,0, /* pad words. */
204
0x0000,0x0000, /* ISCP phys addr, set in init_82586_mem(). */
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) */
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. */
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. */
223
/* 0x0024: Setup station address command. */
225
SET_MC_CMD, /* Next command. */
226
0xaa00,0xb000,0x0bad, /* Station address (to be filled in) */
228
/* 0x0030: NOP, looping back to itself. Point to first Tx buffer to Tx. */
229
0, CmdNOp, IDLELOOP, 0 /* pad */,
231
/* 0x0038: A unused Time-Domain Reflectometer command. */
232
0, CmdTDR, IDLELOOP, 0,
234
/* 0x0040: An unused Dump State command. */
235
0, CmdDump, IDLELOOP, DUMP_DATA,
237
/* 0x0048: An unused Diagnose command. */
238
0, CmdDiagnose, IDLELOOP,
240
/* 0x004E: An empty set-multicast-list command. */
241
0, CmdMulticastList, IDLELOOP, 0,
244
/* NIC specific static variables go here */
246
static unsigned short ioaddr, irq, scb_base;
247
static Address mem_start, mem_end;
248
static unsigned short rx_head, rx_tail;
250
#define read_mem(m,s) fmemcpy((char *)s, m, sizeof(s))
252
static void setup_rx_buffers(struct nic *nic)
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)
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 */
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;
288
memcpy((char *)write_ptr, (char *)rx_cmd, sizeof(unsigned short) * 3);
291
static void ack_status(void)
293
unsigned short cmd, status;
294
unsigned short *shmem = (short *)mem_start;
296
cmd = (status = shmem[iSCB_STATUS>>1]) & 0xf000;
297
if (status & 0x100) /* CU suspended? */
299
if ((status & 0x200) == 0) /* CU not active? */
301
if (status & 0x010) /* RU suspended? */
303
else if ((status & 0x040) == 0) /* RU not active? */
305
if (cmd == 0) /* Nothing to do */
307
shmem[iSCB_CMD>>1] = cmd;
309
printf("Status %hX Command %hX\n", status, cmd);
311
outb(0, ioaddr + I82586_ATTN);
314
/**************************************************************************
315
RESET - Reset adapter
316
***************************************************************************/
318
static void i82586_reset(struct nic *nic)
321
unsigned short *shmem = (short *)mem_start;
323
/* put the card in its initial state */
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);
331
/* Fix the ISCP address and base. */
332
init_words[3] = scb_base;
333
init_words[7] = scb_base;
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);
344
/* Start the 586 by releasing the reset line, but leave loopback. */
345
outb(0xA0, ioaddr + MISC_CTRL);
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 */
353
shmem[iSCB_STATUS>>1] == 0)
355
if (currticks() > time)
357
printf("i82586 initialisation timed out with status %hX, cmd %hX\n",
358
shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]);
362
/* Issue channel-attn -- the 82586 won't start. */
363
outb(0, ioaddr + I82586_ATTN);
366
/* Disable loopback. */
367
outb(0x80, ioaddr + MISC_CTRL);
370
printf("i82586 status %hX, cmd %hX\n",
371
shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]);
375
/**************************************************************************
376
POLL - Wait for a frame
377
***************************************************************************/
378
static int i82586_poll(struct nic *nic)
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;
385
/* return true if there's an ethernet packet ready to read */
387
((frame_status = shmem[0]) & 0x8000) == 0)
388
return (0); /* nope */
390
next_rx_frame = shmem[2];
391
data_buffer_addr = shmem[3];
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");
401
/* We have a frame, copy it to our buffer */
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)
407
nic->packetlen = pkt_len;
411
/* Clear the status word and set EOL on Rx frame */
414
*(short *)(mem_start + rx_tail + 2) = 0;
416
rx_head = next_rx_frame;
421
/**************************************************************************
422
TRANSMIT - Transmit a frame
423
***************************************************************************/
424
static void i82586_transmit(
426
const char *d, /* Destination */
427
unsigned int t, /* Type */
428
unsigned int s, /* size */
429
const char *p) /* Packet */
432
unsigned short type, z;
433
static unsigned short tx_cmd[11] = {
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 */
446
unsigned short *shmem = (short *)mem_start + TX_BUF_START;
448
/* send the packet to destination */
449
/* adjust some contents */
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);
460
memcpy((char *)bptr, nic->node_addr, 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 */
469
(shmem[0] & 0x2000) == 0)
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;
478
/**************************************************************************
479
DISABLE - Turn off ethernet interface
480
***************************************************************************/
481
static void i82586_disable(struct nic *nic)
483
unsigned short *shmem = (short *)mem_start;
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);
497
static int t507_probe1(struct nic *nic, unsigned short ioaddr)
504
if (inb(ioaddr) != '*' || inb(ioaddr+1) != '3'
505
|| inb(ioaddr+2) != 'C' || inb(ioaddr+3) != 'O')
507
irq = inb(ioaddr + IRQ_CONFIG) & 0x0f;
508
mem_config = inb(ioaddr + MEM_CONFIG);
509
if (mem_config & 0x20)
512
mem_start = 0xf00000L + (mem_config & 0x08 ? 0x080000L
513
: (((Address)mem_config & 0x3) << 17));
517
size = ((((Address)mem_config & 0x3) + 1) << 14);
518
mem_start = 0x0c0000L + (((Address)mem_config & 0x18) << 12);
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)
527
nic->node_addr[i] = inb(ioaddr+i);
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);
534
/**************************************************************************
535
PROBE - Look for an adapter, this routine's visible to the outside
536
***************************************************************************/
538
struct nic *t507_probe(struct nic *nic, unsigned short *probe_addrs)
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 };
546
if (init_ID_done == 0)
548
/* Send the ID sequence to the ID_PORT to enable the board */
550
for (i = 0; i < 255; ++i)
552
outb(lrs_state, ID_PORT);
554
if (lrs_state & 0x100)
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))
568
/* point to NIC specific routines */
570
nic->reset = i82586_reset;
571
nic->poll = i82586_poll;
572
nic->transmit = i82586_transmit;
573
nic->disable = i82586_disable;
584
#ifdef INCLUDE_NI5210
586
static int ni5210_probe2(void)
589
unsigned short shmem[10];
591
/* Fix the ISCP address and base. */
592
init_words[3] = scb_base;
593
init_words[7] = scb_base;
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)
601
outb(0, ioaddr + NI52_RESET);
602
outb(0, ioaddr + I82586_ATTN);
606
shmem[iSCB_STATUS>>1] == 0)
610
printf("i82586 initialisation timed out with status %hX, cmd %hX\n",
611
shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]);
615
/* Issue channel-attn -- the 82586 won't start. */
616
outb(0, ioaddr + I82586_ATTN);
617
if (*(unsigned short *)mem_start != 0)
622
static int ni5210_probe1(struct nic *nic)
625
static Address mem_addrs[] = {
626
0xc0000, 0xc4000, 0xc8000, 0xcc000,
627
0xd0000, 0xd4000, 0xd8000, 0xdc000,
628
0xe0000, 0xe4000, 0xe8000, 0xec000,
632
if (inb(ioaddr + 6) != 0x0 || inb(ioaddr + 7) != 0x55)
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())
640
/* Get station address */
641
for (i = 0; i < ETH_ALEN; ++i)
643
nic->node_addr[i] = inb(ioaddr+i);
645
printf("\nNI5210 ioaddr %#hX, mem [%#X-%#X], addr %!\n",
646
ioaddr, mem_start, mem_end, nic->node_addr);
650
struct nic *ni5210_probe(struct nic *nic, unsigned short *probe_addrs)
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*/
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))
675
/* point to NIC specific routines */
677
nic->reset = i82586_reset;
678
nic->poll = i82586_poll;
679
nic->transmit = i82586_transmit;
680
nic->disable = i82586_disable;
690
#ifdef INCLUDE_EXOS205
693
* Code to download to I186 in EXOS205
696
static unsigned char exos_i186_init[] =
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
730
/* These offsets are from the end of the i186 download code */
732
#define OFFSET_SEMA 0x1D1
733
#define OFFSET_ADDR 0x1D7
735
static int exos205_probe2(void)
738
unsigned short shmem[10];
740
/* Fix the ISCP address and base. */
741
init_words[3] = scb_base;
742
init_words[7] = scb_base;
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)
750
outb(0, ioaddr + EXOS205_RESET);
751
outb(0, ioaddr + I82586_ATTN);
754
shmem[iSCB_STATUS>>1] == 0)
758
printf("i82586 initialisation timed out with status %hX, cmd %hX\n",
759
shmem[iSCB_STATUS>>1], shmem[iSCB_CMD>>1]);
763
/* Issue channel-attn -- the 82586 won't start. */
764
outb(0, ioaddr + I82586_ATTN);
765
if (*(unsigned short *)mem_start != 0)
770
static int exos205_probe1(struct nic *nic)
773
/* If you know the other addresses please let me know */
774
static Address mem_addrs[] = {
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())
784
/* Get station address */
785
for (i = 0; i < ETH_ALEN; ++i)
787
nic->node_addr[i] = inb(ioaddr+i);
789
printf("\nEXOS205 ioaddr %#hX, mem [%#X-%#X], addr %!\n",
790
ioaddr, mem_start, mem_end, nic->node_addr);
794
struct nic *exos205_probe(struct nic *nic, unsigned short *probe_addrs)
796
/* If you know the other addresses, please let me know */
797
static unsigned short io_addrs[] = {
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))
811
/* point to NIC specific routines */
813
nic->reset = i82586_reset;
814
nic->poll = i82586_poll;
815
nic->transmit = i82586_transmit;
816
nic->disable = i82586_disable;