149 	Uart *uart;  in oxinterrupt()  local
165 		uart = port;	/* "Come Clarity" */  in oxinterrupt()
175 					uart->oerr++;  in oxinterrupt()
177 					uart->perr++;  in oxinterrupt()
179 					uart->ferr++;  in oxinterrupt()
182 					uartrecv(uart, ch);  in oxinterrupt()
186 			uartkick(uart);  in oxinterrupt()
191 				ilock(&uart->tlock);  in oxinterrupt()
192 				old = uart->cts;  in oxinterrupt()
193 				uart->cts = val & 1<<4;	/* CTS */  in oxinterrupt()
194 				if(!old && uart->cts)  in oxinterrupt()
195 					uart->ctsbackoff = 2;  in oxinterrupt()
196 				iunlock(&uart->tlock);  in oxinterrupt()
200 				if(!old && uart->dsr && uart->hup_dsr)  in oxinterrupt()
201 					uart->dohup = 1;  in oxinterrupt()
202 				uart->dsr = old;  in oxinterrupt()
207 				if(!old && uart->dcd && uart->hup_dcd)  in oxinterrupt()
208 					uart->dohup = 1;  in oxinterrupt()
209 				uart->dcd = old;  in oxinterrupt()
220 oxenable(Uart *uart, int)  in oxenable()  argument
225 	port = uart->regs;  in oxenable()
242 	(*uart->phys->dtr)(uart, 1);  in oxenable()
243 	(*uart->phys->rts)(uart, 1);  in oxenable()
246 	(*uart->phys->fifo)(uart, ~0);  in oxenable()
250 oxdisable(Uart *uart)  in oxdisable()  argument
255 	port = uart->regs;  in oxdisable()
258 	(*uart->phys->dtr)(uart, 0);  in oxdisable()
259 	(*uart->phys->rts)(uart, 0);  in oxdisable()
260 	(*uart->phys->fifo)(uart, 0);  in oxdisable()
273 oxkick(Uart *uart)  in oxkick()  argument
277 	if(uart->cts == 0 || uart->blocked)  in oxkick()
280 	port = uart->regs;  in oxkick()
285 		if(uart->op >= uart->oe && uartstageoutput(uart) == 0)  in oxkick()
287 		port->mem[Thr] = *(uart->op++);  in oxkick()
292 oxdobreak(Uart *uart, int ms)  in oxdobreak()  argument
299 	port = uart->regs;  in oxdobreak()
310 oxbaud(Uart *uart, int baud)  in oxbaud()  argument
318 	port = uart->regs;  in oxbaud()
357 	uart->baud = baud;  in oxbaud()
362 oxbits(Uart *uart, int bits)  in oxbits()  argument
367 	port = uart->regs;  in oxbits()
386 	uart->bits = bits;  in oxbits()
391 oxstop(Uart *uart, int stop)  in oxstop()  argument
396 	port = uart->regs;  in oxstop()
409 	uart->stop = stop;  in oxstop()
414 oxparity(Uart *uart, int parity)  in oxparity()  argument
419 	port = uart->regs;  in oxparity()
434 	uart->parity = parity;  in oxparity()
439 oxmodemctl(Uart *uart, int on)  in oxmodemctl()  argument
444 	port = uart->regs;  in oxmodemctl()
448 	ilock(&uart->tlock);  in oxmodemctl()
451 		uart->cts = port->mem[Msr] & 1<<4;	/* CTS */  in oxmodemctl()
454 		uart->cts = 1;  in oxmodemctl()
456 	uart->modem = on;  in oxmodemctl()
457 	iunlock(&uart->tlock);  in oxmodemctl()
462 oxrts(Uart *uart, int on)  in oxrts()  argument
466 	port = uart->regs;  in oxrts()
476 oxdtr(Uart *uart, int on)  in oxdtr()  argument
480 	port = uart->regs;  in oxdtr()
490 oxstatus(Uart *uart, void *buf, long n, long offset)  in oxstatus()  argument
497 	port = uart->regs;  in oxstatus()
504 	    uart->baud,  in oxstatus()
505 	    uart->hup_dcd,  in oxstatus()
507 	    uart->hup_dsr,  in oxstatus()
508 	    uart->bits,  in oxstatus()
509 	    uart->modem,  in oxstatus()
510 	    uart->parity,  in oxstatus()
512 	    uart->stop,  in oxstatus()
515 	    uart->dev,  in oxstatus()
516 	    uart->type,  in oxstatus()
517 	    uart->ferr,  in oxstatus()
518 	    uart->oerr,  in oxstatus()
519 	    uart->berr,  in oxstatus()
520 	    uart->serr,  in oxstatus()
521 	    uart->cts ? " cts": "",  in oxstatus()
522 	    uart->dsr ? " dsr": "",  in oxstatus()
524 	    uart->dcd ? " dcd": ""  in oxstatus()
529 oxfifo(Uart *uart, int level)  in oxfifo()  argument
534 	port = uart->regs;  in oxfifo()