2001/0719/pc/uarti8250.c (diff list | history)

2001/0710/sys/src/9/pc/uarti8250.c:445,451 – 2001/0719/sys/src/9/pc/uarti8250.c:445,451 (short | long | prev | next)
2001/0527		{ Ctlr *ctlr; Uart *uart; int iir, old, r;
2001/0719		int iir, lsr, old, r;
2001/0527		uart = arg;
2001/0710/sys/src/9/pc/uarti8250.c:480,496 – 2001/0719/sys/src/9/pc/uarti8250.c:480,504
2001/0527		break; case Irda: /* Received Data Available */ case Ictoi: /* Character Time-out Indication */ uartrecv(uart, csr8r(ctlr, Rbr));
2001/0719		/* * Consume any received data. * If the received byte came in with a break, * parity or framing error, throw it away; * overrun is an indication that something has * already been tossed. */ while((lsr = csr8r(ctlr, Lsr)) & Dr){ if(lsr & Oe) uart->oerr++; if(lsr & Pe) uart->perr++; if(lsr & Fe) uart->ferr++; r = csr8r(ctlr, Rbr); if(!(lsr & (Bi|Fe|Pe))) uartrecv(uart, r); }
2001/0527		break; case Irls: /* Receiver Line Status */ r = csr8r(ctlr, Lsr); if(r & Oe) uart->oerr++; if(r & Pe) uart->perr++; if(r & Fe) uart->ferr++; break; default: iprint("weird uart interrupt 0x%2.2uX\n", iir); break;
2001/0710/sys/src/9/pc/uarti8250.c:532,538 – 2001/0719/sys/src/9/pc/uarti8250.c:540,546
2001/0527		intrenable(ctlr->irq, i8250interrupt, uart, ctlr->tbdf, uart->name); ctlr->iena = 1; } ctlr->sticky[Ier] = Erls|Ethre|Erda;
2001/0719		ctlr->sticky[Ier] = Ethre|Erda;
2001/0527		ctlr->sticky[Mcr] |= Ie; } else{