1994/0107/carrera/devether.c (diff list | history)

1993/1231/sys/src/9/carrera/devether.c:271,276 – 1994/0107/sys/src/9/carrera/devether.c:271,277 (short | long | prev | next)
1993/0904		*/ WR(cr, Rst);
1993/0905		WR(dcr, 0x2423); /* 5-19 Carrera manual */
1994/0107		WR(cr, 0);
1993/0903
1993/0904		/* * Initialise the receive resource area (RRA) and
1993/1231/sys/src/9/carrera/devether.c:379,389 – 1994/0107/sys/src/9/carrera/devether.c:380,387
1993/0904		WR(cdc, 1);
1993/0906		/* * End the reset * Load the Resource Descriptors and Cam contents */ WR(cr, 0);                  WR(cr, Rrra); while(RD(cr) & Rrra) ;
1993/1231/sys/src/9/carrera/devether.c:397,403 – 1994/0107/sys/src/9/carrera/devether.c:395,401
1993/0904		* and interrupt-mask registers. * The SONIC is now initialised, but not enabled. */ WR(rcr, Err|Rnt|Brd);
1994/0107		WR(rcr, Brd);
1993/0904		WR(tcr, 0); WR(imr, AllIntr);
1993/0903		}
1993/1231/sys/src/9/carrera/devether.c:437,442 – 1994/0107/sys/src/9/carrera/devether.c:435,441
1993/0903		etherintr(void) {
1993/0906		Ether *c;
1994/0107		ushort *s;
1993/0904		ulong status; TXpkt *txpkt; RXpkt *rxpkt;
1993/1231/sys/src/9/carrera/devether.c:448,455 – 1994/0107/sys/src/9/carrera/devether.c:447,466
1993/0904		if(status == 0) break;
1993/1219		/* Clear the interrupt cause */
1993/0904		WR(isr, status);
1994/0107		/* * Warnings that something is atoe. */ if(status & Hbl){ WR(isr, Hbl); status &= ~Hbl; print("sonic: cd heartbeat lost\n"); } if(status & Br){ WR(cr, Rst); print("sonic: bus retry occurred\n"); (*(void(*)(void))0xA001C020)(); status &= ~Br; }
1993/0904		/* * Transmission complete, for good or bad.
1993/1231/sys/src/9/carrera/devether.c:470,475 – 1994/0107/sys/src/9/carrera/devether.c:481,487
1993/0906		c->ti = NEXT(c->ti, Ntb); txpkt = &c->tda[c->ti];
1993/0904		}
1994/0107		WR(isr, status & (Txdn|Txer));
1993/0904		status &= ~(Txdn|Txer);
1993/1212		if(isoutbuf(c)) wakeup(&c->tr);
1993/1231/sys/src/9/carrera/devether.c:500,505 – 1994/0107/sys/src/9/carrera/devether.c:512,518
1993/0904		else
1993/0906		c->buffs++;
1993/0904
1994/0107		rxpkt->status = 0;
1993/0904		/* * Finished with this packet, it becomes the * last free packet in the ring, so give it Eol,
1993/1231/sys/src/9/carrera/devether.c:506,518 – 1994/0107/sys/src/9/carrera/devether.c:519,533
1993/0904		* and take the Eol bit off the previous packet. * Move the ring index on. */ rxpkt->link |= Eol;
1994/0107		wus(&rxpkt->link, rxpkt->link|Eol);
1993/0904		rxpkt->owner = Interface;
1993/0906		c->rda[PREV(c->rh, Nrb)].link &= ~Eol;
1994/0107		s = &c->rda[PREV(c->rh, Nrb)].link; wus(s, *s & ~Eol);
1993/0906		c->rh = NEXT(c->rh, Nrb);
1993/0904
1993/0906		rxpkt = &c->rda[c->rh];
1993/0903		}
1994/0107		WR(isr, status & (Pktrx|Rde));
1993/0904		status &= ~(Pktrx|Rde);
1993/0903
1993/0904		noinput:
1993/1231/sys/src/9/carrera/devether.c:520,542 – 1994/0107/sys/src/9/carrera/devether.c:535,549
1993/0904		* We get a 'load CAM done' interrupt * after initialisation. Ignore it.
1993/0903		*/
1993/0904		if(status & Lcd)
1994/0107		if(status & Lcd) { WR(isr, Lcd);
1993/0904		status &= ~Lcd;                  /*
1993/1212		* Warnings that something is atoe.
1993/0904		*/ if(status & Hbl){
1993/0906		print("sonic: cd heartbeat lost\n");
1993/0904		status &= ~Hbl;
1993/0903		}
1993/0904		if(status & Br){
1993/1218		print("sonic: bus retry occurred\n");
1993/0904		status &= ~Br; } if(status & AllIntr)
1994/0107		if(status & AllIntr) { WR(isr, status);
1993/0906		print("sonic #%lux\n", status);
1994/0107		}
1993/0903		} }
1993/1231/sys/src/9/carrera/devether.c:716,721 – 1994/0107/sys/src/9/carrera/devether.c:723,729
1993/0903		etherwrite(Chan *c, void *buf, long n, ulong offset) {
1993/0906		Pbuf *p;
1994/0107		ushort *s;
1993/0904		TXpkt *txpkt; Ether *ctlr = ether[0];
1993/0903
1993/1231/sys/src/9/carrera/devether.c:733,738 – 1994/0107/sys/src/9/carrera/devether.c:741,747
1993/1202		return n;
1993/0904		qlock(&ctlr->tlock);
1994/0107		ctlr->outpackets++;
1993/0918		if(waserror()) { qunlock(&ctlr->tlock); nexterror();
1993/1231/sys/src/9/carrera/devether.c:755,763 – 1994/0107/sys/src/9/carrera/devether.c:764,773
1993/0904		txpkt = &ctlr->tda[ctlr->th]; txpkt->size = n; txpkt->fsize = n; txpkt->link |= Eol;
1994/0107		wus(&txpkt->link, txpkt->link|Eol);
1993/0904		txpkt->status = Interface; ctlr->tda[PREV(ctlr->th, Ntb)].link &= ~Eol;
1994/0107		s = &ctlr->tda[PREV(ctlr->th, Ntb)].link; wus(s, *s & ~Eol);
1993/0904		ctlr->th = NEXT(ctlr->th, Ntb); WR(cr, Txp);