/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* * 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 intconfigASIC(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 intreset(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 */} voidether589link(void){	addethercard("3C589", reset);	addethercard("3C562", reset);	addethercard("589E", reset);}