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/*
* 3C589 and 3C562.
* To do:
* check xcvr10Base2 still works (is GlobalReset necessary?).
*/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/error.h"
#include "../port/netif.h"
#include "../port/etherif.h"
enum { /* all windows */
CommandR = 0x000E,
IntStatusR = 0x000E,
};
enum { /* Commands */
GlobalReset = 0x0000,
SelectRegisterWindow = 0x0001,
RxReset = 0x0005,
TxReset = 0x000B,
AcknowledgeInterrupt = 0x000D,
};
enum { /* IntStatus bits */
commandInProgress = 0x1000,
};
#define COMMAND(port, cmd, a) outs((port)+CommandR, ((cmd)<<11)|(a))
#define STATUS(port) ins((port)+IntStatusR)
enum { /* Window 0 - setup */
Wsetup = 0x0000,
/* registers */
ManufacturerID = 0x0000, /* 3C5[08]*, 3C59[27] */
ProductID = 0x0002, /* 3C5[08]*, 3C59[27] */
ConfigControl = 0x0004, /* 3C5[08]*, 3C59[27] */
AddressConfig = 0x0006, /* 3C5[08]*, 3C59[27] */
ResourceConfig = 0x0008, /* 3C5[08]*, 3C59[27] */
EepromCommand = 0x000A,
EepromData = 0x000C,
/* AddressConfig Bits */
autoSelect9 = 0x0080,
xcvrMask9 = 0xC000,
/* ConfigControl bits */
Ena = 0x0001,
base10TAvailable9 = 0x0200,
coaxAvailable9 = 0x1000,
auiAvailable9 = 0x2000,
/* EepromCommand bits */
EepromReadRegister = 0x0080,
EepromBusy = 0x8000,
};
enum { /* Window 1 - operating set */
Wop = 0x0001,
};
enum { /* Window 3 - FIFO management */
Wfifo = 0x0003,
/* registers */
InternalConfig = 0x0000, /* 3C509B, 3C589, 3C59[0257] */
/* InternalConfig bits */
xcvr10BaseT = 0x00000000,
xcvr10Base2 = 0x00300000,
};
enum { /* Window 4 - diagnostic */
Wdiagnostic = 0x0004,
/* registers */
MediaStatus = 0x000A,
/* MediaStatus bits */
linkBeatDetect = 0x0800,
};
extern int etherelnk3reset(Ether*);
static char *tcmpcmcia[] = {
"3C589", /* 3COM 589[ABCD] */
"3C562", /* 3COM 562 */
"589E", /* 3COM Megahertz 589E */
nil,
};
static int
configASIC(Ether* ether, int port, int xcvr)
{
int x;
/* set Window 0 configuration registers */
COMMAND(port, SelectRegisterWindow, Wsetup);
outs(port+ConfigControl, Ena);
/* IRQ must be 3 on 3C589/3C562 */
outs(port + ResourceConfig, 0x3F00);
x = ins(port+AddressConfig) & ~xcvrMask9;
x |= (xcvr>>20)<<14;
outs(port+AddressConfig, x);
COMMAND(port, TxReset, 0);
while(STATUS(port) & commandInProgress)
;
COMMAND(port, RxReset, 0);
while(STATUS(port) & commandInProgress)
;
return etherelnk3reset(ether);
}
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;
}
ether->type = type; /* must be set before calling configASIC */
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 */
}
void
ether589link(void)
{
addethercard("3C589", reset);
addethercard("3C562", reset);
addethercard("589E", reset);
}
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