diff options
Diffstat (limited to 'sys/arch/armish/stand/boot/ns16550.c')
| -rw-r--r-- | sys/arch/armish/stand/boot/ns16550.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/sys/arch/armish/stand/boot/ns16550.c b/sys/arch/armish/stand/boot/ns16550.c deleted file mode 100644 index 36ba5602da9..00000000000 --- a/sys/arch/armish/stand/boot/ns16550.c +++ /dev/null @@ -1,137 +0,0 @@ -/* $OpenBSD: ns16550.c,v 1.3 2008/01/23 16:37:57 jsing Exp $ */ -/* $NetBSD: ns16550.c,v 1.3 2005/12/24 20:07:03 perry Exp $ */ - -/* - * Copyright (c) 2002 Wasabi Systems, Inc. - * All rights reserved. - * - * Written by Jason R. Thorpe for Wasabi Systems, Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed for the NetBSD Project by - * Wasabi Systems, Inc. - * 4. The name of Wasabi Systems, Inc. may not be used to endorse - * or promote products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * This file provides console I/O routines for boards that use - * 16550-compatible UARTs. - */ - -#include <sys/types.h> - -#include <dev/cons.h> -#include <dev/ic/comreg.h> - -#include "libsa.h" - -#define INB(x) *((volatile uint8_t *) (CONADDR + (x))) -#define OUTB(x, v) *((volatile uint8_t *) (CONADDR + (x))) = (v) - -#define ISSET(t,f) ((t) & (f)) - -#ifndef NS16550_FREQ -#define NS16550_FREQ COM_FREQ -#endif - -static int -comspeed(int speed) -{ -#define divrnd(n, q) (((n)*2/(q)+1)/2) /* divide and round off */ - - int x, err; - - if (speed <= 0) - return (-1); - x = divrnd((NS16550_FREQ / 16), speed); - if (x <= 0) - return (-1); - err = divrnd((((quad_t)NS16550_FREQ) / 16) * 1000, speed * x) - 1000; - if (err < 0) - err = -err; - if (err > COM_TOLERANCE) - return (-1); - return (x); -#undef divrnd -} - -void -com_probe(struct consdev *cn) -{ - cn->cn_pri = CN_LOWPRI; - cn->cn_dev = makedev(12, 0); -} - -void -com_init(struct consdev *cn) -{ - int rate; - - OUTB(com_cfcr, LCR_DLAB); - rate = comspeed(CONSPEED); - OUTB(com_dlbl, rate); - OUTB(com_dlbh, rate >> 8); - OUTB(com_cfcr, LCR_8BITS); - OUTB(com_mcr, MCR_DTR | MCR_RTS); - OUTB(com_fifo, - FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1); - OUTB(com_ier, 0); -} - -int -com_getc(dev_t dev) -{ - uint8_t stat; - - if (dev & 0x80) - return ISSET(stat = INB(com_lsr), LSR_RXRDY); - - while (!ISSET(stat = INB(com_lsr), LSR_RXRDY)) - /* spin */ ; - return (INB(com_data)); -} - -void -com_putc(dev_t dev, int c) -{ - uint8_t stat; - int timo; - - /* Wait for any pending transmission to finish. */ - timo = 50000; - while (!ISSET(stat = INB(com_lsr), LSR_TXRDY) && --timo) - /* spin */ ; - - OUTB(com_data, c); - - /* Wait for this transmission to complete. */ - timo = 1500000; - while (!ISSET(stat = INB(com_lsr), LSR_TXRDY) && --timo) - /* spin */ ; - - /* Clear any interrupts generated by this transmission. */ - (void) INB(com_iir); -} |