#include "u.h"#include "lib.h"#include "mem.h"#include "dat.h"#include "fns.h"#include "io.h" #include "ether.h" static Ctlr ether[MaxEther]; static struct {	char	*type;	int	(*reset)(Ctlr*);} cards[] = {	{ "CS8900", cs8900reset, },	{ 0, }}; intetherinit(void){	Ctlr *ctlr;	int ctlrno, i, mask, n; 	mask = 0;	for(ctlrno = 0; ctlrno < MaxEther; ctlrno++){		ctlr = &ether[ctlrno];		memset(ctlr, 0, sizeof(Ctlr));		if(isaconfig("ether", ctlrno, &ctlr->card) == 0)			continue;		for(n = 0; cards[n].type; n++){			if(strcmp(cards[n].type, ctlr->card.type))				continue;			ctlr->ctlrno = ctlrno;			if((*cards[n].reset)(ctlr))				break; 			ctlr->iq = qopen(16*1024, 1, 0, 0);			ctlr->oq = qopen(16*1024, 1, 0, 0); 			ctlr->present = 1;			mask |= 1<<ctlrno; 			print("ether%d: %s: port 0x%luX irq %d",				ctlr->ctlrno, ctlr->card.type, ctlr->card.port, ctlr->card.irq);			if(ctlr->card.mem)				print(" addr 0x%luX", ctlr->card.mem & ~KZERO);			if(ctlr->card.size)				print(" size 0x%luX", ctlr->card.size);			print(":");			for(i = 0; i < sizeof(ctlr->card.ea); i++)				print(" %2.2uX", ctlr->card.ea[i]);			print("\n"); uartwait();			setvec(ctlr->card.irq, ctlr->card.intr, ctlr);			break;		}	} 	return mask;} static Ctlr*attach(int ctlrno){	Ctlr *ctlr; 	if(ctlrno >= MaxEther || ether[ctlrno].present == 0)		return 0; 	ctlr = &ether[ctlrno];	if(ctlr->present == 1){		ctlr->present = 2;		(*ctlr->card.attach)(ctlr);	} 	return ctlr;} uchar*etheraddr(int ctlrno){	Ctlr *ctlr; 	if((ctlr = attach(ctlrno)) == 0)		return 0; 	return ctlr->card.ea;} intetherrxpkt(int ctlrno, Etherpkt *pkt, int timo){	int n;	Ctlr *ctlr;	Block *b;	ulong start; 	if((ctlr = attach(ctlrno)) == 0)		return 0; 	start = m->ticks;	while((b = qget(ctlr->iq)) == 0){		if(TK2MS(m->ticks - start) >= timo){			/*			print("ether%d: rx timeout\n", ctlrno);			 */			return 0;		}		//delay(1);	} 	n = BLEN(b);	memmove(pkt, b->rp, n);	freeb(b); 	return n;} intetheriq(Ctlr *ctlr, Block *b, int freebp){	if(memcmp(((Etherpkt*)b->rp)->d, ctlr->card.ea, Eaddrlen) != 0){		if(freebp)			freeb(b);		return 0;	}	qbwrite(ctlr->iq, b);	return 1;} intethertxpkt(int ctlrno, Etherpkt *pkt, int len, int){	Ctlr *ctlr;	Block *b;	int s; 	if((ctlr = attach(ctlrno)) == 0)		return 0; 	if(qlen(ctlr->oq) > 16*1024){		print("ether%d: tx queue full\n", ctlrno);		return 0;	}	b = iallocb(sizeof(Etherpkt));	memmove(b->wp, pkt, len);	memmove(((Etherpkt*)b->wp)->s, ctlr->card.ea, Eaddrlen);	b->wp += len;	qbwrite(ctlr->oq, b);	s = splhi();	(*ctlr->card.transmit)(ctlr);	splx(s); 	return 1;}