1991/1001/pc/devuart.c (diff list | history)

1991/1001/sys/src/9/pc/devuart.c:72,78 – 1991/1113/sys/src/9/pc/devuart.c:72,77 (short | long | prev | next)
1991/0801		Rendez r; /* kproc waiting for input */ Alarm *a; /* alarm for waking the kernel process */ int kstarted; /* kproc started */ uchar delim[256/8]; /* characters that act as delimiters */
1991/0823		/* error statistics */ ulong frame;
1991/1001/sys/src/9/pc/devuart.c:239,249 – 1991/1113/sys/src/9/pc/devuart.c:238,245
1991/0810		ch = uartrdreg(up, Data) & 0xff; if(cq->putc) (*cq->putc)(cq, ch); else {
1991/1113		else
1991/0810		putc(cq, ch); if(up->delim[ch/8] & (1<<(ch&7)) ) wakeup(&cq->r); } break; case 2: /* transmitter empty */
1991/1001/sys/src/9/pc/devuart.c:281,286 – 1991/1113/sys/src/9/pc/devuart.c:277,296
1991/0810		uartintr(&uart[1]);
1991/0801		}
1991/1113		void uartclock(void) { Uart *up; IOQ *cq; for(up = uart; up < &uart[2]; up++){ cq = up->iq; if(up->wq && cangetc(cq)) wakeup(&cq->r); } }
1991/0801		/* * turn on a port's interrupts. set DTR and RTS */
1991/1001/sys/src/9/pc/devuart.c:301,311 – 1991/1113/sys/src/9/pc/devuart.c:311,316
1991/0807		}
1991/0808		/*
1991/0823		* speed up the clock to poll the uart fclockinit(); */                  /*
1991/0801		* set up i/o routines */ if(up->oq){
1991/1001/sys/src/9/pc/devuart.c:431,439 – 1991/1113/sys/src/9/pc/devuart.c:436,441
1991/0801		RD(q)->ptr = up; qunlock(up); /* start with all characters as delimiters */
1991/0808		memset(up->delim, 0xff, sizeof(up->delim));
1991/0801		if(up->kstarted == 0){ up->kstarted = 1; sprint(name, "uart%d", s->id);
1991/1001/sys/src/9/pc/devuart.c:486,503 – 1991/1113/sys/src/9/pc/devuart.c:488,493
1991/0801		case 'd': uartdtr(up, n); break;
1991/0808		case 'e': case 'E': /* * the characters in the block are the message * delimiters to use upstream */ memset(up->delim, 0, sizeof(up->delim)); while(++(bp->rptr) < bp->wptr){ m = *bp->rptr; up->delim[m/8] |= 1<<(m&7); } break;
1991/0801		case 'K': case 'k': uartbreak(up, n);
1991/1001/sys/src/9/pc/devuart.c:531,536 – 1991/1113/sys/src/9/pc/devuart.c:521,527
1991/0801		Block *bp; int n;
1991/0823		ulong frame, overrun;
1991/1113		static ulong ints;
1991/0904		frame = 0; overrun = 0;
1991/1001/sys/src/9/pc/devuart.c:540,545 – 1991/1113/sys/src/9/pc/devuart.c:531,538
1991/0808		for(;;){
1991/0801		sleep(&cq->r, cangetc, cq);
1991/1113		if((ints++ & 0x1f) == 0) owl(ints>>5);
1991/0808		qlock(up); if(up->wq == 0){ cq->out = cq->in;