1993/1212/carrera/devether.c (diff list | history)

1993/1211/sys/src/9/carrera/devether.c:75,81 – 1993/1212/sys/src/9/carrera/devether.c:75,81 (short | long | prev | next)
1993/0903		enum {
1993/0904		Nrb = 16, /* receive buffers */ Ntb = 8, /* transmit buffers */
1993/1212		Ntb = 16, /* transmit buffers */
1993/0904		};
1993/0903
1993/0904		enum
1993/1211/sys/src/9/carrera/devether.c:425,430 – 1993/1212/sys/src/9/carrera/devether.c:425,438
1993/0906		}
1993/0905		}
1993/1212		static int isoutbuf(void *arg) { Ether *ctlr = arg; return ctlr->tda[ctlr->th].status == Host; }
1993/0905		void
1993/0903		etherintr(void) {
1993/1211/sys/src/9/carrera/devether.c:462,468 – 1993/1212/sys/src/9/carrera/devether.c:470,477
1993/0906		txpkt = &c->tda[c->ti];
1993/0904		} status &= ~(Txdn|Txer);
1993/0918		wakeup(&c->tr);
1993/1212		if(isoutbuf(c)) wakeup(&c->tr);
1993/0903		}
1993/0904		if((status & (Pktrx|Rde)) == 0)
1993/1211/sys/src/9/carrera/devether.c:514,520 – 1993/1212/sys/src/9/carrera/devether.c:523,529
1993/0904		status &= ~Lcd; /* * Warnings that something is afoot.
1993/1212		* Warnings that something is atoe.
1993/0904		*/ if(status & Hbl){
1993/0906		print("sonic: cd heartbeat lost\n");
1993/1211/sys/src/9/carrera/devether.c:675,688 – 1993/1212/sys/src/9/carrera/devether.c:684,689
1993/0903		} static int isoutbuf(void *arg) {
1993/0904		Ether *ctlr = arg;
1993/0903
1993/0904		return ctlr->tda[ctlr->th].status == Host;
1993/0903		}
1993/1202		static int etherloop(Etherpkt *p, long n) { int s, different;
1993/1211/sys/src/9/carrera/devether.c:722,734 – 1993/1212/sys/src/9/carrera/devether.c:723,735
1993/0903		USED(offset); if(n > ETHERMAXTU) error(Ebadarg);                  /* etherif.c handles structure */ if(NETTYPE(c->qid.path) != Ndataqid)
1993/0904		return netifwrite(ether[0], c, buf, n);
1993/0903
1993/1212		if(n > ETHERMAXTU) error(Ebadarg);
1993/0903		/* we handle data */
1993/1202		if(etherloop(buf, n)) return n;
1993/1211/sys/src/9/carrera/devether.c:739,753 – 1993/1212/sys/src/9/carrera/devether.c:740,751
1993/0918		nexterror(); }
1993/1211		tsleep(&ctlr->tr, isoutbuf, ctlr, 1000);
1993/1212		tsleep(&ctlr->tr, isoutbuf, ctlr, 10000);
1993/0905
1993/1211		if(!isoutbuf(ctlr)) {
1993/0903		print("ether transmitter jammed\n");
1993/1211		reset(ctlr); WR(cr, Rxen); }
1993/1212		if(!isoutbuf(ctlr)) print("ether transmitter jammed cr #%lux\n", RD(cr));
1993/0904		else {
1993/0906		p =(Pbuf*)ctlr->tb[ctlr->th];
1993/1212		p = (Pbuf*)ctlr->tb[ctlr->th];
1993/0903		memmove(p->d, buf, n); if(n < 60) { memset(p->d+n, 0, 60-n);