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freebsd/sys/pc98/boot/netboot/ns8390.c
KATO Takenori 3744016942 Sync with sys/i386/boot/netboot/Makefile, bootmenu.c, main.c and 
ns8390.c revisions 1.18, 1.15, 1.22 and 1.13, respectiely.
1998-07-02 12:37:36 +00:00

763 lines
23 KiB
C
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/**************************************************************************
NETBOOT - BOOTP/TFTP Bootstrap Program
Author: Martin Renters
Date: May/94
This code is based heavily on David Greenman's if_ed.c driver
Copyright (C) 1993-1994, David Greenman, Martin Renters.
This software may be used, modified, copied, distributed, and sold, in
both source and binary form provided that the above copyright and these
terms are retained. Under no circumstances are the authors responsible for
the proper functioning of this software, nor do the authors assume any
responsibility for damages incurred with its use.
3c503 support added by Bill Paul (wpaul@ctr.columbia.edu) on 11/15/94
SMC8416 support added by Bill Paul (wpaul@ctr.columbia.edu) on 12/25/94
**************************************************************************/
DELAY(int x)
{ volatile long a, b, l;
for (x; x>0; x--) b=a;
}
#include "netboot.h"
#include "ns8390.h"
#ifdef _3COM_USE_AUI
short aui=1;
#else
short aui=0;
#endif
unsigned short eth_nic_base;
unsigned short eth_asic_base;
unsigned char eth_tx_start;
unsigned char eth_laar;
unsigned char eth_flags;
unsigned char eth_vendor;
unsigned char eth_memsize;
unsigned char *eth_bmem;
unsigned char *eth_rmem;
unsigned char *eth_node_addr;
#ifdef PC98
int twiddle_max = 1;
int twiddle_counter = 0;
#endif
/**************************************************************************
The following two variables are used externally
**************************************************************************/
char eth_driver[] = "ed0";
char packet[ETHER_MAX_LEN];
int packetlen;
#ifdef PC98
#ifdef INCLUDE_LGY
int type98 = TYPE98_LGY;
#endif
#ifdef INCLUDE_EGY
int type98 = TYPE98_EGY;
#endif
#endif
#if defined(INCLUDE_NE) || defined(INCLUDE_LGY) || defined(INCLUDE_EGY)
static unsigned short ne_base_list[]= {
#ifdef NE_BASE
NE_BASE,
#endif
0xff80, 0xff40, 0xff00, 0xfec0,
0x280, 0x300, 0
};
#endif
/**************************************************************************
ETH_PROBE - Look for an adapter
**************************************************************************/
eth_probe()
{
int i;
struct wd_board *brd;
char *name;
unsigned short chksum;
unsigned char c;
eth_vendor = VENDOR_NONE;
#ifdef INCLUDE_WD
/******************************************************************
Search for WD/SMC cards
******************************************************************/
for (eth_asic_base = WD_LOW_BASE; eth_asic_base <= WD_HIGH_BASE;
eth_asic_base += 0x20) {
chksum = 0;
/* Check for WD/SMC card by checking ethernet address */
if (inb(eth_asic_base+8) != 0) continue;
if (inb(eth_asic_base+9) != 0xE0) {
if (inb(eth_asic_base+9) != 0) continue;
if (inb(eth_asic_base+10) != 0xC0) continue;
}
for (i=8; i<16; i++)
chksum += inb(i+eth_asic_base);
if ((chksum & 0x00FF) == 0x00FF)
break;
}
if (eth_asic_base <= WD_HIGH_BASE) { /* We've found a board */
eth_vendor = VENDOR_WD;
eth_nic_base = eth_asic_base + WD_NIC_ADDR;
c = inb(eth_asic_base+WD_BID); /* Get board id */
for (brd = wd_boards; brd->name; brd++)
if (brd->id == c) break;
if (!brd->name) {
printf("\nUnknown Ethernet type %x\n", c);
return(0); /* Unknown type */
}
eth_flags = brd->flags;
eth_memsize = brd->memsize;
eth_tx_start = 0;
if ((c == TYPE_WD8013EP) &&
(inb(eth_asic_base + WD_ICR) & WD_ICR_16BIT)) {
eth_flags = FLAG_16BIT;
eth_memsize = MEM_16384;
}
if ((c & WD_SOFTCONFIG) && (!(eth_flags & FLAG_790))) {
eth_bmem = (char *)(0x80000 |
((inb(eth_asic_base + WD_MSR) & 0x3F) << 13));
} else
eth_bmem = (char *)WD_DEFAULT_MEM;
if (brd->id == TYPE_SMC8216T || brd->id == TYPE_SMC8216C) {
(unsigned int) *(eth_bmem + 8192) = (unsigned int)0;
if ((unsigned int) *(eth_bmem + 8192)) {
brd += 2;
eth_memsize = brd->memsize;
}
}
outb(eth_asic_base + WD_MSR, 0x80); /* Reset */
printf("\n%s base 0x%x, memory 0x%X, addr ",
brd->name, eth_asic_base, eth_bmem);
for (i=0; i<6; i++) {
printf("%b",(int)(arptable[ARP_CLIENT].node[i] =
inb(i+eth_asic_base+WD_LAR)));
if (i < 5) printf (":");
}
if (eth_flags & FLAG_790) {
outb(eth_asic_base+WD_MSR, WD_MSR_MENB);
outb(eth_asic_base+0x04, (inb(eth_asic_base+0x04) |
0x80));
outb(eth_asic_base+0x0B,
(((unsigned)eth_bmem >> 13) & 0x0F) |
(((unsigned)eth_bmem >> 11) & 0x40) |
(inb(eth_asic_base+0x0B) & 0xB0));
outb(eth_asic_base+0x04, (inb(eth_asic_base+0x04) &
~0x80));
} else {
outb(eth_asic_base+WD_MSR,
(((unsigned)eth_bmem >> 13) & 0x3F) | 0x40);
}
if (eth_flags & FLAG_16BIT) {
if (eth_flags & FLAG_790) {
eth_laar = inb(eth_asic_base + WD_LAAR);
outb(eth_asic_base + WD_LAAR, WD_LAAR_M16EN);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
} else {
outb(eth_asic_base + WD_LAAR, (eth_laar =
WD_LAAR_M16EN | WD_LAAR_L16EN | 1));
}
}
goto found_board;
}
#endif
#ifdef INCLUDE_3COM
/******************************************************************
Search for 3Com 3c503 if no WD/SMC cards
******************************************************************/
if (eth_vendor == VENDOR_NONE) {
eth_asic_base = _3COM_BASE + _3COM_ASIC_OFFSET;
eth_nic_base = _3COM_BASE;
eth_vendor = VENDOR_3COM;
/*
* Note that we use the same settings for both 8 and 16 bit cards:
* both have an 8K bank of memory at page 1 while only the 16 bit
* cards have a bank at page 0.
*/
eth_memsize = MEM_16384;
eth_tx_start = 32;
/* Check our base address */
switch(inb(eth_asic_base + _3COM_BCFR)) {
case _3COM_BCFR_300:
if ((int)eth_nic_base != 0x300)
return(0);
break;
case _3COM_BCFR_310:
if ((int)eth_nic_base != 0x310)
return(0);
break;
case _3COM_BCFR_330:
if ((int)eth_nic_base != 0x330)
return(0);
break;
case _3COM_BCFR_350:
if ((int)eth_nic_base != 0x350)
return(0);
break;
case _3COM_BCFR_250:
if ((int)eth_nic_base != 0x250)
return(0);
break;
case _3COM_BCFR_280:
if ((int)eth_nic_base != 0x280)
return(0);
break;
case _3COM_BCFR_2A0:
if ((int)eth_nic_base != 0x2a0)
return(0);
break;
case _3COM_BCFR_2E0:
if ((int)eth_nic_base != 0x2e0)
return(0);
break;
default:
return (0);
}
/* Now get the shared memory address */
switch (inb(eth_asic_base + _3COM_PCFR)) {
case _3COM_PCFR_DC000:
eth_bmem = (char *)0xdc000;
break;
case _3COM_PCFR_D8000:
eth_bmem = (char *)0xd8000;
break;
case _3COM_PCFR_CC000:
eth_bmem = (char *)0xcc000;
break;
case _3COM_PCFR_C8000:
eth_bmem = (char *)0xc8000;
break;
default:
return (0);
}
/* Need this to make eth_poll() happy. */
eth_rmem = eth_bmem - 0x2000;
/* Reset NIC and ASIC */
outb (eth_asic_base + _3COM_CR , _3COM_CR_RST | _3COM_CR_XSEL);
outb (eth_asic_base + _3COM_CR , _3COM_CR_XSEL);
/* Get our ethernet address */
outb(eth_asic_base + _3COM_CR, _3COM_CR_EALO | _3COM_CR_XSEL);
printf("\n3Com 3c503 base 0x%x, memory 0x%X addr ",
eth_nic_base, eth_bmem);
for (i=0; i<6; i++) {
printf("%b",(int)(arptable[ARP_CLIENT].node[i] =
inb(eth_nic_base+i)));
if (i < 5) printf (":");
}
outb(eth_asic_base + _3COM_CR, _3COM_CR_XSEL);
/*
* Initialize GA configuration register. Set bank and enable shared
* mem. We always use bank 1.
*/
outb(eth_asic_base + _3COM_GACFR, _3COM_GACFR_RSEL |
_3COM_GACFR_MBS0);
outb(eth_asic_base + _3COM_VPTR2, 0xff);
outb(eth_asic_base + _3COM_VPTR1, 0xff);
outb(eth_asic_base + _3COM_VPTR0, 0x00);
/*
* Clear memory and verify that it worked (we use only 8K)
*/
bzero(eth_bmem, 0x2000);
for(i = 0; i < 0x2000; ++i)
if (*((eth_bmem)+i)) {
printf ("Failed to clear 3c503 shared mem.\n");
return (0);
}
/*
* Initialize GA page/start/stop registers.
*/
outb(eth_asic_base + _3COM_PSTR, eth_tx_start);
outb(eth_asic_base + _3COM_PSPR, eth_memsize);
goto found_board;
}
#endif
#if defined(INCLUDE_NE) || defined(INCLUDE_LGY) || defined(INCLUDE_EGY)
/******************************************************************
Search for NE1000/2000 if no WD/SMC or 3com cards
******************************************************************/
if (eth_vendor == VENDOR_NONE) {
char romdata[16], testbuf[32];
char test[] = "NE1000/2000 memory";
unsigned short *tent_base=ne_base_list;
eth_bmem = (char *)0; /* No shared memory */
ne_again:
eth_asic_base = *tent_base + NE_ASIC_OFFSET;
eth_nic_base = *tent_base;
#ifdef PC98
printf("Looking for LGY/EGY at 0x%x\n", eth_nic_base);
#else
printf("Looking for NE1000/NE2000 at 0x%x\n", eth_nic_base);
#endif
eth_vendor = VENDOR_NOVELL;
eth_flags = FLAG_PIO;
eth_memsize = MEM_16384;
eth_tx_start = 32;
#ifdef GWETHER
outb(eth_asic_base + NE_RESET, 0);
DELAY(200);
#endif
c = inb(eth_asic_base + NE_RESET);
outb(eth_asic_base + NE_RESET, c);
DELAY(5000);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
outb(eth_nic_base + D8390_P0_COMMAND, D8390_COMMAND_STP |
D8390_COMMAND_RD2);
outb(eth_nic_base + D8390_P0_RCR, D8390_RCR_MON);
outb(eth_nic_base + D8390_P0_DCR, D8390_DCR_FT1 | D8390_DCR_LS);
outb(eth_nic_base + D8390_P0_PSTART, MEM_8192);
outb(eth_nic_base + D8390_P0_PSTOP, MEM_16384);
eth_pio_write(test, 8192, sizeof(test));
eth_pio_read(8192, testbuf, sizeof(test));
if (!bcompare(test, testbuf, sizeof(test))) {
eth_flags |= FLAG_16BIT;
eth_memsize = MEM_32768;
eth_tx_start = 64;
outb(eth_nic_base + D8390_P0_DCR, D8390_DCR_WTS |
D8390_DCR_FT1 | D8390_DCR_LS);
outb(eth_nic_base + D8390_P0_PSTART, MEM_16384);
outb(eth_nic_base + D8390_P0_PSTOP, MEM_32768);
eth_pio_write(test, 16384, sizeof(test));
eth_pio_read(16384, testbuf, sizeof(test));
if (!bcompare(testbuf, test, sizeof(test)))
if (*++tent_base)
goto ne_again;
else
return (0);
}
eth_pio_read(0, romdata, 16);
#ifdef PC98
printf("\n%s base 0x%x, addr ",
type98 == TYPE98_LGY ? "Ethernet adapter LGY-98" :
(type98 == TYPE98_EGY ? "Ethernet adapter EGY-98" :
(type98 == TYPE98_ICM ? "Ethernet adapter ICM" :
"Unknown")),
eth_nic_base);
#else
printf("\nNE1000/NE2000 (%d bit) base 0x%x, addr ",
eth_flags & FLAG_16BIT ? 16:8, eth_nic_base);
#endif
for (i=0; i<6; i++) {
printf("%b",(int)(arptable[ARP_CLIENT].node[i] = romdata[i
+ ((eth_flags & FLAG_16BIT) ? i : 0)]));
if (i < 5) printf (":");
}
goto found_board;
}
#endif
found_board:
printf("\n");
if (eth_vendor == VENDOR_NONE) return(0);
if (eth_vendor != VENDOR_3COM) eth_rmem = eth_bmem;
eth_node_addr = arptable[ARP_CLIENT].node;
eth_reset();
return(eth_vendor);
}
/**************************************************************************
ETH_RESET - Reset adapter
**************************************************************************/
eth_reset()
{
int i;
if (eth_flags & FLAG_790)
outb(eth_nic_base+D8390_P0_COMMAND,
D8390_COMMAND_PS0 | D8390_COMMAND_STP);
else
outb(eth_nic_base+D8390_P0_COMMAND,
D8390_COMMAND_PS0 | D8390_COMMAND_RD2 |
D8390_COMMAND_STP);
if (eth_flags & FLAG_16BIT)
outb(eth_nic_base+D8390_P0_DCR, 0x49);
else
outb(eth_nic_base+D8390_P0_DCR, 0x48);
outb(eth_nic_base+D8390_P0_RBCR0, 0);
outb(eth_nic_base+D8390_P0_RBCR1, 0);
outb(eth_nic_base+D8390_P0_RCR, 4); /* allow broadcast frames */
outb(eth_nic_base+D8390_P0_TCR, 2);
outb(eth_nic_base+D8390_P0_TPSR, eth_tx_start);
outb(eth_nic_base+D8390_P0_PSTART, eth_tx_start + D8390_TXBUF_SIZE);
if (eth_flags & FLAG_790) outb(eth_nic_base + 0x09, 0);
outb(eth_nic_base+D8390_P0_PSTOP, eth_memsize);
outb(eth_nic_base+D8390_P0_BOUND, eth_tx_start + D8390_TXBUF_SIZE);
outb(eth_nic_base+D8390_P0_ISR, 0xFF);
outb(eth_nic_base+D8390_P0_IMR, 0);
if (eth_flags & FLAG_790)
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS1 |
D8390_COMMAND_STP);
else
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS1 |
D8390_COMMAND_RD2 | D8390_COMMAND_STP);
for (i=0; i<6; i++)
#ifdef INCLUDE_EGY
outb(eth_nic_base+D8390_P1_PAR0+i*2, eth_node_addr[i]); /* for EGY-98 XXX HN2 */
#else
outb(eth_nic_base+D8390_P1_PAR0+i, eth_node_addr[i]);
#endif
for (i=0; i<6; i++)
outb(eth_nic_base+D8390_P1_MAR0+i, 0xFF);
outb(eth_nic_base+D8390_P1_CURR, eth_tx_start + D8390_TXBUF_SIZE+1);
if (eth_flags & FLAG_790)
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_STA);
else
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_RD2 | D8390_COMMAND_STA);
outb(eth_nic_base+D8390_P0_ISR, 0xFF);
outb(eth_nic_base+D8390_P0_TCR, 0);
#ifdef INCLUDE_3COM
if (eth_vendor == VENDOR_3COM) {
/*
* No way to tell whether or not we're supposed to use
* the 3Com's transceiver unless the user tells us.
* 'aui' should have some compile time default value
* which can be changed from the command menu.
*/
if (aui)
outb(eth_asic_base + _3COM_CR, 0);
else
outb(eth_asic_base + _3COM_CR, _3COM_CR_XSEL);
}
#endif
return(1);
}
/**************************************************************************
ETH_TRANSMIT - Transmit a frame
**************************************************************************/
eth_transmit(d,t,s,p)
char *d; /* Destination */
unsigned short t; /* Type */
unsigned short s; /* size */
char *p; /* Packet */
{
unsigned char c;
#ifdef INCLUDE_3COM
if (eth_vendor == VENDOR_3COM) {
bcopy(d, eth_bmem, 6); /* dst */
bcopy(eth_node_addr, eth_bmem+6, ETHER_ADDR_LEN); /* src */
*(eth_bmem+12) = t>>8; /* type */
*(eth_bmem+13) = t;
bcopy(p, eth_bmem+14, s);
s += 14;
while (s < ETHER_MIN_LEN) *(eth_bmem+(s++)) = 0;
}
#endif
#ifdef INCLUDE_WD
if (eth_vendor == VENDOR_WD) { /* Memory interface */
if (eth_flags & FLAG_16BIT) {
outb(eth_asic_base + WD_LAAR, eth_laar | WD_LAAR_M16EN);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
if (eth_flags & FLAG_790) {
outb(eth_asic_base + WD_MSR, WD_MSR_MENB);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
bcopy(d, eth_bmem, 6); /* dst */
bcopy(eth_node_addr, eth_bmem+6, ETHER_ADDR_LEN); /* src */
*(eth_bmem+12) = t>>8; /* type */
*(eth_bmem+13) = t;
bcopy(p, eth_bmem+14, s);
s += 14;
while (s < ETHER_MIN_LEN) *(eth_bmem+(s++)) = 0;
if (eth_flags & FLAG_790) {
outb(eth_asic_base + WD_MSR, 0);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
if (eth_flags & FLAG_16BIT) {
outb(eth_asic_base + WD_LAAR, eth_laar & ~WD_LAAR_M16EN);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
}
#endif
#if defined(INCLUDE_NE) || defined(INCLUDE_LGY) || defined(INCLUDE_EGY)
if (eth_vendor == VENDOR_NOVELL) { /* Programmed I/O */
unsigned short type;
type = (t >> 8) | (t << 8);
eth_pio_write(d, eth_tx_start<<8, 6);
eth_pio_write(eth_node_addr, (eth_tx_start<<8)+6, 6);
eth_pio_write(&type, (eth_tx_start<<8)+12, 2);
eth_pio_write(p, (eth_tx_start<<8)+14, s);
s += 14;
if (s < ETHER_MIN_LEN) s = ETHER_MIN_LEN;
}
#endif
#ifndef PC98
twiddle();
#else
if (twiddle_counter-- <= 0) {
twiddle();
twiddle_counter = twiddle_max;
}
#endif
if (eth_flags & FLAG_790)
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_STA);
else
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_RD2 | D8390_COMMAND_STA);
outb(eth_nic_base+D8390_P0_TPSR, eth_tx_start);
outb(eth_nic_base+D8390_P0_TBCR0, s);
outb(eth_nic_base+D8390_P0_TBCR1, s>>8);
if (eth_flags & FLAG_790)
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_TXP | D8390_COMMAND_STA);
else
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0 |
D8390_COMMAND_TXP | D8390_COMMAND_RD2 |
D8390_COMMAND_STA);
return(0);
}
void
set_twiddle_max(int max)
{
twiddle_max = max;
}
/**************************************************************************
ETH_POLL - Wait for a frame
**************************************************************************/
eth_poll()
{
int ret = 0;
unsigned short type = 0;
unsigned char bound,curr,rstat;
unsigned short len, copylen;
unsigned short pktoff;
unsigned char *p;
struct ringbuffer pkthdr;
rstat = inb(eth_nic_base+D8390_P0_RSR);
if (rstat & D8390_RSTAT_OVER) {
eth_reset();
return(0);
}
if (!(rstat & D8390_RSTAT_PRX)) return(0);
bound = inb(eth_nic_base+D8390_P0_BOUND)+1;
if (bound == eth_memsize) bound = eth_tx_start + D8390_TXBUF_SIZE;
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS1);
curr = inb(eth_nic_base+D8390_P1_CURR);
outb(eth_nic_base+D8390_P0_COMMAND, D8390_COMMAND_PS0);
if (curr == eth_memsize) curr=eth_tx_start + D8390_TXBUF_SIZE;
if (curr == bound) return(0);
if (eth_vendor == VENDOR_WD) {
if (eth_flags & FLAG_16BIT) {
outb(eth_asic_base + WD_LAAR, eth_laar | WD_LAAR_M16EN);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
if (eth_flags & FLAG_790) {
outb(eth_asic_base + WD_MSR, WD_MSR_MENB);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
pktoff = (bound << 8);
if (eth_flags & FLAG_PIO)
eth_pio_read(pktoff, &pkthdr, 4);
else
bcopy(eth_rmem + pktoff, &pkthdr, 4);
len = pkthdr.len - 4; /* sub CRC */
pktoff += 4;
if (len > 1514) len = 1514;
bound = pkthdr.bound; /* New bound ptr */
if ( (pkthdr.status & D8390_RSTAT_PRX) && (len > 14) && (len < 1518)) {
p = packet;
packetlen = copylen = len;
len = (eth_memsize << 8) - pktoff;
if (packetlen > len) { /* We have a wrap-around */
if (eth_flags & FLAG_PIO)
eth_pio_read(pktoff, p, len);
else
bcopy(eth_rmem + pktoff, p, len);
pktoff = (eth_tx_start + D8390_TXBUF_SIZE) << 8;
p += len;
copylen -= len;
}
if (eth_flags & FLAG_PIO)
eth_pio_read(pktoff, p, copylen);
else
bcopy(eth_rmem + pktoff, p, copylen);
type = (packet[12]<<8) | packet[13];
ret = 1;
}
if (eth_vendor == VENDOR_WD) {
if (eth_flags & FLAG_790) {
outb(eth_asic_base + WD_MSR, 0);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
if (eth_flags & FLAG_16BIT) {
outb(eth_asic_base + WD_LAAR, eth_laar &
~WD_LAAR_M16EN);
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
#ifndef PC98
inb(0x84);
#else
(void)outb(0x5f,0);
#endif
}
if (bound == (eth_tx_start + D8390_TXBUF_SIZE))
bound = eth_memsize;
outb(eth_nic_base+D8390_P0_BOUND, bound-1);
if (ret && (type == ARP)) {
struct arprequest *arpreq;
unsigned long reqip;
arpreq = (struct arprequest *)&packet[ETHER_HDR_LEN];
convert_ipaddr(&reqip, arpreq->tipaddr);
if ((ntohs(arpreq->opcode) == ARP_REQUEST) &&
(reqip == arptable[ARP_CLIENT].ipaddr)) {
arpreq->opcode = htons(ARP_REPLY);
bcopy(arpreq->sipaddr, arpreq->tipaddr, 4);
bcopy(arpreq->shwaddr, arpreq->thwaddr, 6);
bcopy(arptable[ARP_CLIENT].node, arpreq->shwaddr, 6);
convert_ipaddr(arpreq->sipaddr, &reqip);
eth_transmit(arpreq->thwaddr, ARP, sizeof(struct arprequest),
arpreq);
return(0);
}
}
return(ret);
}
#if defined(INCLUDE_NE) || defined(INCLUDE_LGY) || defined(INCLUDE_EGY)
/**************************************************************************
ETH_PIO_READ - Read a frame via Programmed I/O
**************************************************************************/
eth_pio_read(src, dst, cnt)
unsigned short src;
unsigned char *dst;
unsigned short cnt;
{
if (cnt & 1) cnt++;
outb(eth_nic_base + D8390_P0_COMMAND, D8390_COMMAND_RD2 |
D8390_COMMAND_STA);
outb(eth_nic_base + D8390_P0_RBCR0, cnt);
outb(eth_nic_base + D8390_P0_RBCR1, cnt>>8);
outb(eth_nic_base + D8390_P0_RSAR0, src);
outb(eth_nic_base + D8390_P0_RSAR1, src>>8);
outb(eth_nic_base + D8390_P0_COMMAND, D8390_COMMAND_RD0 |
D8390_COMMAND_STA);
if (eth_flags & FLAG_16BIT) {
while (cnt) {
*((unsigned short *)dst) = inw(eth_asic_base + NE_DATA);
dst += 2;
cnt -= 2;
}
}
else {
while (cnt--)
*(dst++) = inb(eth_asic_base + NE_DATA);
}
}
/**************************************************************************
ETH_PIO_WRITE - Write a frame via Programmed I/O
**************************************************************************/
eth_pio_write(src, dst, cnt)
unsigned char *src;
unsigned short dst;
unsigned short cnt;
{
outb(eth_nic_base + D8390_P0_COMMAND, D8390_COMMAND_RD2 |
D8390_COMMAND_STA);
outb(eth_nic_base + D8390_P0_ISR, D8390_ISR_RDC);
outb(eth_nic_base + D8390_P0_RBCR0, cnt);
outb(eth_nic_base + D8390_P0_RBCR1, cnt>>8);
outb(eth_nic_base + D8390_P0_RSAR0, dst);
outb(eth_nic_base + D8390_P0_RSAR1, dst>>8);
outb(eth_nic_base + D8390_P0_COMMAND, D8390_COMMAND_RD1 |
D8390_COMMAND_STA);
if (eth_flags & FLAG_16BIT) {
if (cnt & 1) cnt++; /* Round up */
while (cnt) {
outw(eth_asic_base + NE_DATA, *((unsigned short *)src));
src += 2;
cnt -= 2;
}
}
else {
while (cnt--)
outb(eth_asic_base + NE_DATA, *(src++));
}
cnt = 200;
while((inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_RDC)
!= D8390_ISR_RDC && --cnt);
}
#else
/**************************************************************************
ETH_PIO_READ - Dummy routine when NE2000 not compiled in
**************************************************************************/
eth_pio_read() {}
#endif
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