86 oct16550_clrint (struct uart_bas *bas)  in oct16550_clrint()  argument
90 	iir = uart_getreg(bas, REG_IIR);  in oct16550_clrint()
94 			(void)uart_getreg(bas, REG_LSR);  in oct16550_clrint()
96 			(void)uart_getreg(bas, REG_DATA);  in oct16550_clrint()
98 			(void)uart_getreg(bas, REG_MSR);  in oct16550_clrint()
100                     	(void) uart_getreg(bas, REG_USR);  in oct16550_clrint()
101 		uart_barrier(bas);  in oct16550_clrint()
102 		iir = uart_getreg(bas, REG_IIR);  in oct16550_clrint()
109 oct16550_delay (struct uart_bas *bas)  in oct16550_delay()  argument
117 	lcr = uart_getreg(bas, REG_LCR);  in oct16550_delay()
118 	uart_setreg(bas, REG_LCR, lcr | LCR_DLAB);  in oct16550_delay()
119 	uart_barrier(bas);  in oct16550_delay()
120 	divisor = uart_getreg(bas, REG_DLL) | (uart_getreg(bas, REG_DLH) << 8);  in oct16550_delay()
121 	uart_barrier(bas);  in oct16550_delay()
122 	uart_setreg(bas, REG_LCR, lcr);  in oct16550_delay()
123 	uart_barrier(bas);  in oct16550_delay()
125 	if(!bas->rclk)  in oct16550_delay()
130 		return (16000000 * divisor / bas->rclk);  in oct16550_delay()
131 	return (16000 * divisor / (bas->rclk / 1000));  in oct16550_delay()
160 oct16550_drain (struct uart_bas *bas, int what)  in oct16550_drain()  argument
164 	delay = oct16550_delay(bas);  in oct16550_drain()
173 		while ((uart_getreg(bas, REG_LSR) & LSR_TEMT) == 0 && --limit)  in oct16550_drain()
191 		while ((uart_getreg(bas, REG_LSR) & LSR_RXRDY) && --limit) {  in oct16550_drain()
192 			(void)uart_getreg(bas, REG_DATA);  in oct16550_drain()
193 			uart_barrier(bas);  in oct16550_drain()
210 oct16550_flush (struct uart_bas *bas, int what)  in oct16550_flush()  argument
219 	uart_setreg(bas, REG_FCR, fcr);  in oct16550_flush()
220 	uart_barrier(bas);  in oct16550_flush()
224 oct16550_param (struct uart_bas *bas, int baudrate, int databits, int stopbits,  in oct16550_param()  argument
245 		divisor = oct16550_divisor(bas->rclk, baudrate);  in oct16550_param()
248 		uart_setreg(bas, REG_LCR, lcr | LCR_DLAB);  in oct16550_param()
249 		uart_barrier(bas);  in oct16550_param()
250 		uart_setreg(bas, REG_DLL, divisor & 0xff);  in oct16550_param()
251 		uart_setreg(bas, REG_DLH, (divisor >> 8) & 0xff);  in oct16550_param()
252 		uart_barrier(bas);  in oct16550_param()
257 	uart_setreg(bas, REG_LCR, lcr);  in oct16550_param()
258 	uart_barrier(bas);  in oct16550_param()
265 static int oct16550_probe(struct uart_bas *bas);
266 static void oct16550_init(struct uart_bas *bas, int, int, int, int);
267 static void oct16550_term(struct uart_bas *bas);
268 static void oct16550_putc(struct uart_bas *bas, int);
269 static int oct16550_rxready(struct uart_bas *bas);
270 static int oct16550_getc(struct uart_bas *bas, struct mtx *);
282 oct16550_probe (struct uart_bas *bas)  in oct16550_probe()  argument
287 	val = uart_getreg(bas, REG_IIR);  in oct16550_probe()
290 	val = uart_getreg(bas, REG_MCR);  in oct16550_probe()
293 	val = uart_getreg(bas, REG_USR);  in oct16550_probe()
300 oct16550_init (struct uart_bas *bas, int baudrate, int databits, int stopbits,  in oct16550_init()  argument
305 	oct16550_param(bas, baudrate, databits, stopbits, parity);  in oct16550_init()
308 	ier = uart_getreg(bas, REG_IER) & 0x0;  in oct16550_init()
309 	uart_setreg(bas, REG_IER, ier);  in oct16550_init()
310 	uart_barrier(bas);  in oct16550_init()
314 	uart_barrier(bas);  in oct16550_init()
317 	uart_setreg(bas, REG_MCR, MCR_RTS | MCR_DTR);  in oct16550_init()
318 	uart_barrier(bas);  in oct16550_init()
320 	oct16550_clrint(bas);  in oct16550_init()
324 oct16550_term (struct uart_bas *bas)  in oct16550_term()  argument
328 	uart_setreg(bas, REG_MCR, 0);  in oct16550_term()
329 	uart_barrier(bas);  in oct16550_term()
332 static inline void oct16550_wait_txhr_empty (struct uart_bas *bas, int limit, int delay)  in oct16550_wait_txhr_empty()  argument
334     while (((uart_getreg(bas, REG_LSR) & LSR_THRE) == 0) &&  in oct16550_wait_txhr_empty()
335            ((uart_getreg(bas, REG_USR) & USR_TXFIFO_NOTFULL) == 0))  in oct16550_wait_txhr_empty()
340 oct16550_putc (struct uart_bas *bas, int c)  in oct16550_putc()  argument
345 	delay = oct16550_delay(bas);  in oct16550_putc()
346         oct16550_wait_txhr_empty(bas, 100, delay);  in oct16550_putc()
347 	uart_setreg(bas, REG_DATA, c);  in oct16550_putc()
348 	uart_barrier(bas);  in oct16550_putc()
349         oct16550_wait_txhr_empty(bas, 100, delay);  in oct16550_putc()
353 oct16550_rxready (struct uart_bas *bas)  in oct16550_rxready()  argument
356 	return ((uart_getreg(bas, REG_LSR) & LSR_RXRDY) != 0 ? 1 : 0);  in oct16550_rxready()
360 oct16550_getc (struct uart_bas *bas, struct mtx *hwmtx)  in oct16550_getc()  argument
367 	delay = oct16550_delay(bas);  in oct16550_getc()
369 	while ((uart_getreg(bas, REG_LSR) & LSR_RXRDY) == 0) {  in oct16550_getc()
375 	c = uart_getreg(bas, REG_DATA);  in oct16550_getc()
444 	struct uart_bas *bas;  in oct16550_bus_attach()  local
448 	bas = &sc->sc_bas;  in oct16550_bus_attach()
450         oct16550_drain(bas, UART_DRAIN_TRANSMITTER);  in oct16550_bus_attach()
451 	oct16550->mcr = uart_getreg(bas, REG_MCR);  in oct16550_bus_attach()
453 	uart_setreg(bas, REG_FCR, oct16550->fcr);  in oct16550_bus_attach()
454 	uart_barrier(bas);  in oct16550_bus_attach()
463 	oct16550_clrint(bas);  in oct16550_bus_attach()
464 	oct16550->ier = uart_getreg(bas, REG_IER) & 0xf0;  in oct16550_bus_attach()
466 	uart_setreg(bas, REG_IER, oct16550->ier);  in oct16550_bus_attach()
467 	uart_barrier(bas);  in oct16550_bus_attach()
475 	struct uart_bas *bas;  in oct16550_bus_detach()  local
478 	bas = &sc->sc_bas;  in oct16550_bus_detach()
479 	ier = uart_getreg(bas, REG_IER) & 0xf0;  in oct16550_bus_detach()
480 	uart_setreg(bas, REG_IER, ier);  in oct16550_bus_detach()
481 	uart_barrier(bas);  in oct16550_bus_detach()
482 	oct16550_clrint(bas);  in oct16550_bus_detach()
490 	struct uart_bas *bas;  in oct16550_bus_flush()  local
493 	bas = &sc->sc_bas;  in oct16550_bus_flush()
496 		oct16550_flush(bas, what);  in oct16550_bus_flush()
497 		uart_setreg(bas, REG_FCR, oct16550->fcr);  in oct16550_bus_flush()
498 		uart_barrier(bas);  in oct16550_bus_flush()
501 		error = oct16550_drain(bas, what);  in oct16550_bus_flush()
530 	struct uart_bas *bas;  in oct16550_bus_ioctl()  local
534 	bas = &sc->sc_bas;  in oct16550_bus_ioctl()
539 		lcr = uart_getreg(bas, REG_LCR);  in oct16550_bus_ioctl()
544 		uart_setreg(bas, REG_LCR, lcr);  in oct16550_bus_ioctl()
545 		uart_barrier(bas);  in oct16550_bus_ioctl()
548 		lcr = uart_getreg(bas, REG_LCR);  in oct16550_bus_ioctl()
549 		uart_barrier(bas);  in oct16550_bus_ioctl()
550 		uart_setreg(bas, REG_LCR, 0xbf);  in oct16550_bus_ioctl()
551 		uart_barrier(bas);  in oct16550_bus_ioctl()
552 		efr = uart_getreg(bas, REG_EFR);  in oct16550_bus_ioctl()
557 		uart_setreg(bas, REG_EFR, efr);  in oct16550_bus_ioctl()
558 		uart_barrier(bas);  in oct16550_bus_ioctl()
559 		uart_setreg(bas, REG_LCR, lcr);  in oct16550_bus_ioctl()
560 		uart_barrier(bas);  in oct16550_bus_ioctl()
563 		lcr = uart_getreg(bas, REG_LCR);  in oct16550_bus_ioctl()
564 		uart_barrier(bas);  in oct16550_bus_ioctl()
565 		uart_setreg(bas, REG_LCR, 0xbf);  in oct16550_bus_ioctl()
566 		uart_barrier(bas);  in oct16550_bus_ioctl()
567 		efr = uart_getreg(bas, REG_EFR);  in oct16550_bus_ioctl()
572 		uart_setreg(bas, REG_EFR, efr);  in oct16550_bus_ioctl()
573 		uart_barrier(bas);  in oct16550_bus_ioctl()
574 		uart_setreg(bas, REG_LCR, lcr);  in oct16550_bus_ioctl()
575 		uart_barrier(bas);  in oct16550_bus_ioctl()
578 		lcr = uart_getreg(bas, REG_LCR);  in oct16550_bus_ioctl()
579 		uart_setreg(bas, REG_LCR, lcr | LCR_DLAB);  in oct16550_bus_ioctl()
580 		uart_barrier(bas);  in oct16550_bus_ioctl()
581 		divisor = uart_getreg(bas, REG_DLL) |  in oct16550_bus_ioctl()
582 		    (uart_getreg(bas, REG_DLH) << 8);  in oct16550_bus_ioctl()
583 		uart_barrier(bas);  in oct16550_bus_ioctl()
584 		uart_setreg(bas, REG_LCR, lcr);  in oct16550_bus_ioctl()
585 		uart_barrier(bas);  in oct16550_bus_ioctl()
586 		baudrate = (divisor > 0) ? bas->rclk / divisor / 16 : 0;  in oct16550_bus_ioctl()
605 	struct uart_bas *bas;  in oct16550_bus_ipend()  local
609 	bas = &sc->sc_bas;  in oct16550_bus_ipend()
612 	iir = uart_getreg(bas, REG_IIR) & IIR_IMASK;  in oct16550_bus_ipend()
616                     	lsr = uart_getreg(bas, REG_LSR);  in oct16550_bus_ipend()
637                     	(void) uart_getreg(bas, REG_USR);  in oct16550_bus_ipend()
649 	struct uart_bas *bas;  in oct16550_bus_param()  local
652 	bas = &sc->sc_bas;  in oct16550_bus_param()
654 	error = oct16550_param(bas, baudrate, databits, stopbits, parity);  in oct16550_bus_param()
662 	struct uart_bas *bas;  in oct16550_bus_probe()  local
665 	bas = &sc->sc_bas;  in oct16550_bus_probe()
666 	bas->rclk = uart_oct16550_class.uc_rclk = cvmx_clock_get_rate(CVMX_CLOCK_SCLK);  in oct16550_bus_probe()
668 	error = oct16550_probe(bas);  in oct16550_bus_probe()
673 	uart_setreg(bas, REG_MCR, (MCR_DTR | MCR_RTS));  in oct16550_bus_probe()
680         oct16550_drain(bas, UART_DRAIN_TRANSMITTER);  in oct16550_bus_probe()
683 	uart_setreg(bas, REG_FCR, FCR_ENABLE | FCR_XMT_RST | FCR_RCV_RST);  in oct16550_bus_probe()
685 	uart_barrier(bas);  in oct16550_bus_probe()
687 	oct16550_flush(bas, UART_FLUSH_RECEIVER|UART_FLUSH_TRANSMITTER);  in oct16550_bus_probe()
723 	struct uart_bas *bas;  in oct16550_bus_receive()  local
727 	bas = &sc->sc_bas;  in oct16550_bus_receive()
729 	lsr = uart_getreg(bas, REG_LSR);  in oct16550_bus_receive()
736 		xc = uart_getreg(bas, REG_DATA);  in oct16550_bus_receive()
742 		lsr = uart_getreg(bas, REG_LSR);  in oct16550_bus_receive()
750         (void)uart_getreg(bas, REG_DATA);  in oct16550_bus_receive()
752 		(void)uart_getreg(bas, REG_DATA);  in oct16550_bus_receive()
753 		uart_barrier(bas);  in oct16550_bus_receive()
754 		lsr = uart_getreg(bas, REG_LSR);  in oct16550_bus_receive()
764 	struct uart_bas *bas;  in oct16550_bus_setsig()  local
767 	bas = &sc->sc_bas;  in oct16550_bus_setsig()
786 	uart_setreg(bas, REG_MCR, oct16550->mcr);  in oct16550_bus_setsig()
787 	uart_barrier(bas);  in oct16550_bus_setsig()
796 	struct uart_bas *bas;  in oct16550_bus_transmit()  local
799 	bas = &sc->sc_bas;  in oct16550_bus_transmit()
803             oct16550_putc(bas, sc->sc_txbuf[i]);  in oct16550_bus_transmit()
807         oct16550_wait_txhr_empty(bas, 100, oct16550_delay(bas));  in oct16550_bus_transmit()
808 	uart_setreg(bas, REG_IER, oct16550->ier | IER_ETXRDY);  in oct16550_bus_transmit()
809 	uart_barrier(bas);  in oct16550_bus_transmit()
812 		uart_setreg(bas, REG_DATA, sc->sc_txbuf[i]);  in oct16550_bus_transmit()
813 		uart_barrier(bas);  in oct16550_bus_transmit()
824 	struct uart_bas *bas = &sc->sc_bas;  in oct16550_bus_grab()  local
832 	uart_setreg(bas, REG_IER, 0);  in oct16550_bus_grab()
833 	uart_barrier(bas);  in oct16550_bus_grab()
841 	struct uart_bas *bas = &sc->sc_bas;  in oct16550_bus_ungrab()  local
847 	uart_setreg(bas, REG_IER, oct16550->ier);  in oct16550_bus_ungrab()
848 	uart_barrier(bas);  in oct16550_bus_ungrab()