mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/* $Id: mcclock_isa.c,v 1.1 1998/07/15 19:21:31 dfr Exp $ */
|
|
/* $NetBSD: mcclock_tlsb.c,v 1.8 1998/05/13 02:50:29 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 by Matthew Jacob
|
|
* NASA AMES Research Center.
|
|
* 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 immediately at the beginning of the file, without modification,
|
|
* 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. 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 AND CONTRIBUTORS ``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 AUTHOR 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/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <isa/isavar.h>
|
|
#include <machine/clockvar.h>
|
|
#include <dev/dec/mcclockvar.h>
|
|
|
|
#include <dev/dec/mc146818reg.h>
|
|
|
|
static int mcclock_isa_probe(device_t dev);
|
|
static int mcclock_isa_attach(device_t dev);
|
|
static void mcclock_isa_write(device_t, u_int, u_int);
|
|
static u_int mcclock_isa_read(device_t, u_int);
|
|
|
|
static device_method_t mcclock_isa_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, mcclock_isa_probe),
|
|
DEVMETHOD(device_attach, mcclock_isa_attach),
|
|
|
|
/* mcclock interface */
|
|
DEVMETHOD(mcclock_write, mcclock_isa_write),
|
|
DEVMETHOD(mcclock_read, mcclock_isa_read),
|
|
|
|
/* clock interface */
|
|
DEVMETHOD(clock_init, mcclock_init),
|
|
DEVMETHOD(clock_get, mcclock_get),
|
|
DEVMETHOD(clock_set, mcclock_set),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t mcclock_isa_driver = {
|
|
"mcclock",
|
|
mcclock_isa_methods,
|
|
DRIVER_TYPE_MISC,
|
|
1, /* XXX no softc */
|
|
};
|
|
|
|
static devclass_t mcclock_devclass;
|
|
|
|
int
|
|
mcclock_isa_probe(device_t dev)
|
|
{
|
|
isa_set_portsize(dev, 2);
|
|
device_set_desc(dev, "MC146818A real time clock");
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
mcclock_isa_attach(device_t dev)
|
|
{
|
|
mcclock_attach(dev);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
mcclock_isa_write(device_t dev, u_int reg, u_int val)
|
|
{
|
|
u_int port = isa_get_port(dev);
|
|
outb(port, reg);
|
|
outb(port+1, val);
|
|
}
|
|
|
|
static u_int
|
|
mcclock_isa_read(device_t dev, u_int reg)
|
|
{
|
|
u_int port = isa_get_port(dev);
|
|
outb(port, reg);
|
|
return inb(port+1);
|
|
}
|
|
|
|
DRIVER_MODULE(mcclock_isa, isa, mcclock_isa_driver, mcclock_devclass, 0, 0);
|