diff options
Diffstat (limited to 'sys/arch/i386/stand/libsa/bioscons.c')
| -rw-r--r-- | sys/arch/i386/stand/libsa/bioscons.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/sys/arch/i386/stand/libsa/bioscons.c b/sys/arch/i386/stand/libsa/bioscons.c new file mode 100644 index 00000000000..a365453bc74 --- /dev/null +++ b/sys/arch/i386/stand/libsa/bioscons.c @@ -0,0 +1,145 @@ +/* $OpenBSD: bioscons.c,v 1.1 1997/08/12 21:39:01 mickey Exp $ */ + +/* + * Copyright (c) 1997 Michael Shalayeff + * All rights reserved. + * + * 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 by Michael Shalayeff. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE REGENTS OR CONTRIBUTORS 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. + * + */ + +#include <sys/types.h> +#include <machine/biosvar.h> +#include <machine/pio.h> +#include <dev/isa/isareg.h> +#include <dev/ic/mc146818reg.h> +#include <i386/isa/nvram.h> +#include <dev/cons.h> + +#define PRESENT_MASK (NVRAM_EQUIPMENT_KBD|NVRAM_EQUIPMENT_DISPLAY) + +void +kbd_probe(cn) + struct consdev *cn; +{ + outb(IO_RTC, NVRAM_EQUIPMENT); + if ((inb(IO_RTC+1) & PRESENT_MASK) == PRESENT_MASK) { + cn->cn_pri = CN_INTERNAL; + /* XXX from i386/conf.c */ + cn->cn_dev = makedev(12, 0); + } +} + +void +kbd_init(cn) + struct consdev *cn; +{ + /* nothing */ +} + +int +kbd_getc(dev) + dev_t dev; +{ + u_int8_t rv; + __asm volatile("movb $1, %%ah\n\t" + DOINT(0x16) "\n\t" + "setz %%al" + : "=a" (rv) :: "%ecx", "%edx", "cc" ); + if (rv) + return 0; + + if (minor(dev) & 0x80) + return 1; + + __asm volatile("xorl %%eax, %%eax\n\t" + DOINT(0x16) "\n\t" + : "=a" (rv) :: "%ecx", "edx", "cc" ); + return rv; +} + +void +kbd_putc(dev, c) + dev_t dev; + int c; +{ + __asm volatile("movb $0x0e, %%ah\n\t" + "movl $0, %%ebx\n\t" + DOINT(0x10) + :: "a" (c) : "%ecx", "%edx", "cc" ); +} + +void +com_probe(cn) + struct consdev *cn; +{ + register int i, n; + __asm volatile(DOINT(0x11) "\n\t" /* get equipment (9-11 # of coms) */ + : "=a" (n) :: "%ecx", "%edx", "cc"); + n >>= 9; + n &= 7; + for (i = 0; i < n; i++) + ; +} + +void +com_init(cn) + struct consdev *cn; +{ + __asm volatile("movb $0xe2, %%al\n\t" + DOINT(0x14) "\n\t" + :: "d" (minor(cn->cn_dev)) : "%ecx", "cc" ); +} + +int +com_getc(dev) + dev_t dev; +{ + register int rv; + __asm volatile("movl $2, %%al\n\t" + DOINT(0x14) "\n\t" + : "=a" (rv): "d" (minor(dev)) : "%ecx", "cc" ); + + if (!(rv & 0x8000)) + return 0; + + if (minor(dev) & 0x80) + return 1; + + return (rv & 0xff); +} + +void +com_putc(dev, c) + dev_t dev; + int c; +{ + int rv; + __asm volatile("movb $1, %%ah\n\t" + DOINT(0x14) "\n\t" + : "=a" (rv): "d" (minor(dev)), "a" (c) : "%ecx", "cc" ); +} |