1992/0501/pc/devether.c (diff list | history)

1992/0425/sys/src/9/pc/devether.c:14,21 – 1992/0501/sys/src/9/pc/devether.c:14,24 (short | long | prev | next)
1992/0403
1992/0424		struct Hw { int addr; /* interface address */ void *ram; /* interface shared memory address */ int ramsz; /* interface shared memory size */
1992/0501		uchar *ram; /* interface shared memory address */ int size; uchar tstart; uchar pstart; uchar pstop;
1992/0424		void (*reset)(Ctlr*); void (*init)(Ctlr*); void (*mode)(Ctlr*, int);
1992/0425/sys/src/9/pc/devether.c:43,49 – 1992/0501/sys/src/9/pc/devether.c:46,52
1992/0424		uchar owner; uchar busy; ushort len; Etherpkt pkt;
1992/0501		uchar pkt[sizeof(Etherpkt)];
1992/0404		};
1992/0403
1992/0404		enum {
1992/0425/sys/src/9/pc/devether.c:250,256 – 1992/0501/sys/src/9/pc/devether.c:253,258
1992/0424		sleep(&cp->tr, isobuf, cp);
1992/0403
1992/0424		tb = &cp->tb[cp->th]; p = &tb->pkt;
1992/0403		/* * copy message into buffer
1992/0425/sys/src/9/pc/devether.c:258,264 – 1992/0501/sys/src/9/pc/devether.c:260,266
1992/0403		len = 0; for(nbp = bp; nbp; nbp = nbp->next){ if(sizeof(Etherpkt) - len >= (n = BLEN(nbp))){ memmove(((uchar *)p)+len, nbp->rptr, n);
1992/0501		memmove(tb->pkt+len, nbp->rptr, n);
1992/0403		len += n; } else print("no room damn it\n");
1992/0425/sys/src/9/pc/devether.c:270,285 – 1992/0501/sys/src/9/pc/devether.c:272,282
1992/0407		* pad the packet (zero the pad)
1992/0403		*/ if(len < ETHERMINTU){ memset(((char*)p)+len, 0, ETHERMINTU-len);
1992/0501		memset(tb->pkt+len, 0, ETHERMINTU-len);
1992/0403		len = ETHERMINTU; } /*
1992/0407		* give packet a local address
1992/0403		*/
1992/0407		memmove(p->s, cp->ea, sizeof(cp->ea));
1992/0403		/*
1992/0424		* set up the transmit buffer and
1992/0407		* start the transmission
1992/0403		*/
1992/0425/sys/src/9/pc/devether.c:392,403 – 1992/0501/sys/src/9/pc/devether.c:389,402
1992/0403		} static void
1992/0424		etherup(Ctlr *cp, Etherpkt *p, int len)
1992/0501		etherup(Ctlr *cp, void *data, int len)
1992/0403		{
1992/0404		Block *bp;
1992/0410		Type *tp;
1992/0501		Etherpkt *p;
1992/0404		int t;
1992/0501		Type *tp; Block *bp;
1992/0404
1992/0501		p = data;
1992/0410		t = (p->type[0]<<8)|p->type[1]; for(tp = &cp->type[0]; tp < &cp->type[NType]; tp++){
1992/0404		/*
1992/0425/sys/src/9/pc/devether.c:464,470 – 1992/0501/sys/src/9/pc/devether.c:463,469
1992/0406		*/
1992/0424		while(bp = getq(&cp->lbq)){
1992/0404		cp->inpackets++;
1992/0424		etherup(cp, (Etherpkt*)bp->rptr, BLEN(bp));
1992/0501		etherup(cp, bp->rptr, BLEN(bp));
1992/0404		freeb(bp); }
1992/0408
1992/0425/sys/src/9/pc/devether.c:474,480 – 1992/0501/sys/src/9/pc/devether.c:473,479
1992/0424		while(cp->rb[cp->rh].owner == Host){
1992/0406		cp->inpackets++;
1992/0424		rb = &cp->rb[cp->rh]; etherup(cp, &rb->pkt, rb->len);
1992/0501		etherup(cp, rb->pkt, rb->len);
1992/0424		rb->owner = Interface; cp->rh = NEXT(cp->rh, Nrb); }
1992/0425/sys/src/9/pc/devether.c:528,535 – 1992/0501/sys/src/9/pc/devether.c:527,533
1992/0403		/* * put the receiver online * and start the kproc */
1992/0424
1992/0501		*/
1992/0424		(*cp->hw->online)(cp, 1); if(cp->kproc == 0){ sprint(cp->name, "ether%dkproc", ctlrno);
1992/0425/sys/src/9/pc/devether.c:599,604 – 1992/0501/sys/src/9/pc/devether.c:597,610
1992/0424		#define IN(hw, m) inb((hw)->addr+OFFSETOF(Wd8013, m)) #define OUT(hw, m, x) outb((hw)->addr+OFFSETOF(Wd8013, m), (x))
1992/0501		typedef struct { uchar status; uchar next; uchar len0; uchar len1; uchar data[256-4]; } Ring;
1992/0424		/* */ static void
1992/0425/sys/src/9/pc/devether.c:608,631 – 1992/0501/sys/src/9/pc/devether.c:614,630
1992/0424		int i; uchar msr;
1992/0403
1992/0424		cp->rb = ialloc(sizeof(Buffer)*Nrb, 0); cp->nrb = Nrb; cp->tb = ialloc(sizeof(Buffer)*Ntb, 0);
1992/0501		cp->tb = ialloc(sizeof(Buffer)*Ntb, 1);
1992/0424		cp->ntb = Ntb;
1992/0501		cp->rb = ialloc(sizeof(Buffer)*Nrb, 1); cp->nrb = Nrb;
1992/0424		msr = IN(hw, msr); OUT(hw, msr, 0x40|msr);
1992/0403		{
1992/0424		int addr = hw->addr; for(i = 0; i < 16; i++){ print("#%2.2ux ", inb(addr)); addr++;
1992/0403		}
1992/0424		print("\n"); } for(i = 0; i < sizeof(cp->ea); i++) cp->ea[i] = IN(hw, lan[i]);
1992/0501
1992/0424		(*hw->init)(cp); setvec(Ethervec, hw->intr); }
1992/0425/sys/src/9/pc/devether.c:639,647 – 1992/0501/sys/src/9/pc/devether.c:638,644
1992/0403		{
1992/0424		Hw *hw = cp->hw; int i; uchar bnry; print("init %d %d\n", HOWMANY(sizeof(Etherpkt), 256), HOWMANY(hw->ramsz, 256)); OUT(hw, w.cr, 0x21); /* Page0|RD2|STP */ OUT(hw, w.dcr, 0x48); /* FT1|LS */ OUT(hw, w.rbcr0, 0);
1992/0425/sys/src/9/pc/devether.c:649,658 – 1992/0501/sys/src/9/pc/devether.c:646,654
1992/0424		OUT(hw, w.rcr, 0x04); /* AB */ OUT(hw, w.tcr, 0x20); /* LB0 */ bnry = HOWMANY(sizeof(Etherpkt), 256); OUT(hw, w.bnry, bnry); OUT(hw, w.pstart, bnry); OUT(hw, w.pstop, HOWMANY(hw->ramsz, 256));
1992/0501		OUT(hw, w.bnry, hw->pstart); OUT(hw, w.pstart, hw->pstart); OUT(hw, w.pstop, hw->pstop);
1992/0424		OUT(hw, w.isr, 0xFF); OUT(hw, w.imr, 0x1F); /* OVWE|TXEE|RXEE|PTXE|PRXE */
1992/0425/sys/src/9/pc/devether.c:659,665 – 1992/0501/sys/src/9/pc/devether.c:655,661
1992/0424		OUT(hw, w.cr, 0x61); /* Page1|RD2|STP */ for(i = 0; i < sizeof(cp->ea); i++) OUT(hw, par[i], cp->ea[i]); OUT(hw, curr, bnry+1);
1992/0501		OUT(hw, curr, hw->pstart+1);
1992/0424		OUT(hw, w.cr, 0x22); /* Page0|RD2|STA */ OUT(hw, w.tpsr, 0);
1992/0425/sys/src/9/pc/devether.c:688,693 – 1992/0501/sys/src/9/pc/devether.c:684,691
1992/0424		OUT(cp->hw, w.tcr, 0);
1992/0403		}
1992/0501		static ulong wraps;
1992/0424		static void wd8013receive(Ctlr *cp)
1992/0403		{
1992/0425/sys/src/9/pc/devether.c:694,713 – 1992/0501/sys/src/9/pc/devether.c:692,704
1992/0424		Hw *hw = cp->hw; Buffer *rb; uchar bnry, curr, next; typedef struct Ring { uchar status; uchar next; uchar len0; uchar len1; uchar data[256-4]; } Ring; Ring *p;
1992/0425		int len0, len1;
1992/0501		int len;
1992/0424		bnry = IN(hw, r.bnry); next = NEXT(bnry, HOWMANY(hw->ramsz, 256)); if(next == 0) next = HOWMANY(sizeof(Etherpkt), 256);
1992/0501		next = bnry+1; if(next >= hw->pstop) next = hw->pstart;
1992/0424		for(;;){ OUT(hw, w.cr, 0x62); /* Page1|RD2|STA */ curr = IN(hw, curr);
1992/0425/sys/src/9/pc/devether.c:716,745 – 1992/0501/sys/src/9/pc/devether.c:707,737
1992/0424		break; cp->inpackets++; p = &((Ring*)hw->ram)[next];
1992/0425		len0 = (p->len1<<8)|p->len0-4; len1 = 0;
1992/0501		len = (p->len1<<8)|p->len0-4; if(len > sizeof(Etherpkt)) print("!");
1992/0424		rb = &cp->rb[cp->ri]; if(rb->owner == Interface){
1992/0425		rb->len = len0;
1992/0501		rb->len = len;
1992/0424		/*copy in packet*/
1992/0425		if(p->data+len0 >= (uchar*)hw->ram+hw->ramsz){ len1 = p->data+len0 - (uchar*)hw->ram+hw->ramsz; len0 = (uchar*)hw->ram+hw->ramsz - p->data;
1992/0501		if(p->data+len >= hw->ram+hw->size){ wraps++; len = hw->ram+hw->size - p->data; memmove(rb->pkt+len, &((Ring*)hw->ram)[hw->pstart], p->data+rb->len - hw->ram+hw->size);
1992/0425		} memmove((uchar*)&rb->pkt, p->data, len0); if(len1) memmove((uchar*)&rb->pkt+len0, (uchar*)hw->ram+ROUNDUP(sizeof(Etherpkt), 256), len1);
1992/0501		memmove(rb->pkt, p->data, len);
1992/0424		rb->owner = Host; cp->ri = NEXT(cp->ri, Nrb); }
1992/0501		p->status = 0;
1992/0424		next = p->next; bnry = next-1; if(bnry < HOWMANY(sizeof(Etherpkt), 256)) bnry = HOWMANY(hw->ramsz, 256)-1;
1992/0501		if(bnry < hw->pstart) bnry = hw->pstop-1;
1992/0424		OUT(hw, w.bnry, bnry); }
1992/0403		}
1992/0425/sys/src/9/pc/devether.c:751,763 – 1992/0501/sys/src/9/pc/devether.c:743,754
1992/0424		Buffer *tb; int s; print("transmit\n"); s = splhi(); tb = &cp->tb[cp->ti]; if(tb->busy == 0 && tb->owner == Interface){ hw = cp->hw; print("transmit memove %lux %lux, %d\n", hw->ram, &tb->pkt, tb->len); memmove(hw->ram, &tb->pkt, tb->len);
1992/0501		tb->len = tb->len+1 & ~1; memmove(hw->ram, tb->pkt, tb->len);
1992/0424		OUT(hw, w.tbcr0, tb->len & 0xFF); OUT(hw, w.tbcr1, (tb->len>>8) & 0xFF); OUT(hw, w.cr, 0x26); /* Page0|RD2|TXP|STA */
1992/0425/sys/src/9/pc/devether.c:764,770 – 1992/0501/sys/src/9/pc/devether.c:755,760
1992/0424		tb->busy = 1; } splx(s); print("transmit done\n");
1992/0403		}
1992/0424		static void
1992/0425/sys/src/9/pc/devether.c:814,820 – 1992/0501/sys/src/9/pc/devether.c:804,813
1992/0424		static Hw wd8013 = { 0x360, /* I/O base address */ KZERO|0xC8000, /* shared memory address */ 8*1024, /* shared memory size */
1992/0501		8*1024, 0, HOWMANY(sizeof(Etherpkt), 256), HOWMANY(8*1024, 256),
1992/0424		wd8013reset, wd8013init, wd8013mode,
1992/0425/sys/src/9/pc/devether.c:827,830 – 1992/0501/sys/src/9/pc/devether.c:820,841
1992/0409		void
1992/0411		consdebug(void)
1992/0409		{
1992/0501		Ctlr *cp = &ctlr[0]; Hw *hw = cp->hw; Buffer *bp; uchar bnry, curr; print("th%d ti%d rh%d ri%d\n", cp->th, cp->ti, cp->rh, cp->ri); bp = &cp->tb[cp->ti]; print("t: owner %d busy %d len %d\n", bp->owner, bp->busy, bp->len); bnry = IN(hw, r.bnry); OUT(hw, w.cr, 0x62); curr = IN(hw, curr); OUT(hw, w.cr, 0x22); print("bnry %d, curr %d\n", bnry, curr); print("in %d out %d crcs %d oerrs %d frames %d overflows %d buffs %d wraps %d\n", cp->inpackets, cp->outpackets, cp->crcs, cp->oerrs, cp->frames, cp->overflows, cp->buffs, wraps);
1992/0403		}