static int
reset(Ether* ether)
{
ushort buf[16];
ulong port;
Dp8390 *ctlr;
int i, slot;
uchar ea[Eaddrlen], sum, x;
Ec2t *ec2t, tmpec2t;
/*
* Set up the software configuration.
* Use defaults for port, irq, mem and size
* if not specified.
* The manual says 16KB memory, the box
* says 32KB. The manual seems to be correct.
*/
if(ether->port == 0)
ether->port = 0x300;
if(ether->irq == 0)
ether->irq = 9;
if(ether->mem == 0)
ether->mem = 0x4000;
if(ether->size == 0)
ether->size = 16*1024;
port = ether->port;
if(ioalloc(ether->port, 0x20, 0, "ec2t") < 0)
return -1;
slot = -1;
for(ec2t = ec2tpcmcia; ec2t->name != nil; ec2t++){
if((slot = pcmspecial(ec2t->name, ether)) >= 0)
break;
}
if(ec2t->name == nil){
ec2t = &tmpec2t;
ec2t->name = nil;
ec2t->iochecksum = 0;
for(i = 0; i < ether->nopt; i++){
if(cistrncmp(ether->opt[i], "id=", 3) == 0){
ec2t->name = ðer->opt[i][3];
slot = pcmspecial(ec2t->name, ether);
}
else if(cistrncmp(ether->opt[i], "iochecksum", 10) == 0)
ec2t->iochecksum = 1;
}
}
ctlr = malloc(sizeof(Dp8390));
if(ctlr == nil || slot < 0){
iofree(port);
free(ctlr);
return -1;
}
ether->ctlr = ctlr;
ctlr->width = 2;
ctlr->ram = 0;
ctlr->port = port;
ctlr->data = port+Data;
ctlr->tstart = HOWMANY(ether->mem, Dp8390BufSz);
ctlr->pstart = ctlr->tstart + HOWMANY(sizeof(Etherpkt), Dp8390BufSz);
ctlr->pstop = ctlr->tstart + HOWMANY(ether->size, Dp8390BufSz);
ctlr->dummyrr = 0;
for(i = 0; i < ether->nopt; i++){
if(cistrcmp(ether->opt[i], "nodummyrr") == 0)
ctlr->dummyrr = 0;
else if(cistrncmp(ether->opt[i], "dummyrr=", 8) == 0)
ctlr->dummyrr = strtol(ðer->opt[i][8], nil, 0);
}
/*
* Reset the board. This is done by doing a read
* followed by a write to the Reset address.
*/
buf[0] = inb(port+Reset);
delay(2);
outb(port+Reset, buf[0]);
delay(2);
/*
* Init the (possible) chip, then use the (possible)
* chip to read the (possible) PROM for ethernet address
* and a marker byte.
* Could just look at the DP8390 command register after
* initialisation has been tried, but that wouldn't be
* enough, there are other ethernet boards which could
* match.
*/
dp8390reset(ether);
sum = 0;
if(ec2t->iochecksum){
/*
* These cards have the ethernet address in I/O space.
* There's a checksum over 8 bytes which sums to 0xFF.
*/
for(i = 0; i < 8; i++){
x = inb(port+0x14+i);
sum += x;
buf[i] = (x<<8)|x;
}
}
else{
memset(buf, 0, sizeof(buf));
dp8390read(ctlr, buf, 0, sizeof(buf));
if((buf[0x0E] & 0xFF) == 0x57 && (buf[0x0F] & 0xFF) == 0x57)
sum = 0xFF;
}
if(sum != 0xFF){
pcmspecialclose(slot);
iofree(ether->port);
free(ether->ctlr);
return -1;
}
/*
* Stupid machine. Shorts were asked for,
* shorts were delivered, although the PROM is a byte array.
* Set the ethernet address.
*/
memset(ea, 0, Eaddrlen);
if(memcmp(ea, ether->ea, Eaddrlen) == 0){
for(i = 0; i < sizeof(ether->ea); i++)
ether->ea[i] = buf[i];
}
dp8390setea(ether);
return 0;
}
static int
reset(Ether* ether)
{
int i, t, slot;
char *type;
int port;
enum { WantAny, Want10BT, Want10B2 };
int want;
uchar ea[6];
char *p;
if(ether->irq == 0)
ether->irq = 10;
if(ether->port == 0)
ether->port = 0x240;
port = ether->port;
if(ioalloc(port, 0x10, 0, "3C589") < 0)
return -1;
type = nil;
slot = -1;
for(i = 0; tcmpcmcia[i] != nil; i++){
type = tcmpcmcia[i];
if((slot = pcmspecial(type, ether)) >= 0)
break;
}
if(slot < 0){
iofree(port);
return -1;
}
/*
* Read Ethernet address from card memory
* on 3C562, but only if the user has not
* overridden it.
*/
memset(ea, 0, sizeof ea);
if(memcmp(ea, ether->ea, 6) == 0 && strcmp(type, "3C562") == 0) {
if(pcmcistuple(slot, 0x88, -1, ea, 6) == 6) {
for(i = 0; i < 6; i += 2){
t = ea[i];
ea[i] = ea[i+1];
ea[i+1] = t;
}
memmove(ether->ea, ea, 6);
}
}
/*
* Allow user to specify desired media in plan9.ini
*/
want = WantAny;
for(i = 0; i < ether->nopt; i++){
if(cistrncmp(ether->opt[i], "media=", 6) != 0)
continue;
p = ether->opt[i]+6;
if(cistrcmp(p, "10base2") == 0)
want = Want10B2;
else if(cistrcmp(p, "10baseT") == 0)
want = Want10BT;
}
/* try configuring as a 10BaseT */
if(want==WantAny || want==Want10BT){
if(configASIC(ether, port, xcvr10BaseT) < 0){
pcmspecialclose(slot);
iofree(port);
return -1;
}
delay(100);
COMMAND(port, SelectRegisterWindow, Wdiagnostic);
if((ins(port+MediaStatus)&linkBeatDetect) || want==Want10BT){
COMMAND(port, SelectRegisterWindow, Wop);
print("#l%d: xcvr10BaseT %s\n", ether->ctlrno, type);
return 0;
}
}
/* try configuring as a 10base2 */
if(want==WantAny || want==Want10B2){
COMMAND(port, GlobalReset, 0);
if(configASIC(ether, port, xcvr10Base2) < 0){
pcmspecialclose(slot);
iofree(port);
return -1;
}
print("#l%d: xcvr10Base2 %s\n", ether->ctlrno, type);
return 0;
}
return -1; /* not reached */
}