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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 "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;
- }
- 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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