134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/* $NetBSD: mcclock_isa.c,v 1.19 2008/03/29 05:42:45 tsutsui Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: mcclock_isa.c,v 1.19 2008/03/29 05:42:45 tsutsui Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/clock_subr.h>
|
|
|
|
#include <dev/ic/mc146818reg.h>
|
|
#include <dev/ic/mc146818var.h>
|
|
#include <dev/isa/isavar.h>
|
|
|
|
#include <alpha/alpha/mcclockvar.h>
|
|
|
|
int mcclock_isa_match(device_t, cfdata_t, void *);
|
|
void mcclock_isa_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(mcclock_isa, sizeof(struct mc146818_softc),
|
|
mcclock_isa_match, mcclock_isa_attach, NULL, NULL);
|
|
|
|
void mcclock_isa_write(struct mc146818_softc *, u_int, u_int);
|
|
u_int mcclock_isa_read(struct mc146818_softc *, u_int);
|
|
|
|
int
|
|
mcclock_isa_match(device_t parent, cfdata_t cf, void *aux)
|
|
{
|
|
struct isa_attach_args *ia = aux;
|
|
bus_space_handle_t ioh;
|
|
|
|
if (ia->ia_nio < 1 ||
|
|
(ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT &&
|
|
ia->ia_io[0].ir_addr != 0x70))
|
|
return (0);
|
|
|
|
if (ia->ia_niomem > 0 &&
|
|
(ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM))
|
|
return (0);
|
|
|
|
if (ia->ia_nirq > 0 &&
|
|
(ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ))
|
|
return (0);
|
|
|
|
if (ia->ia_ndrq > 0 &&
|
|
(ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ))
|
|
return (0);
|
|
|
|
if (bus_space_map(ia->ia_iot, 0x70, 0x2, 0, &ioh))
|
|
return (0);
|
|
|
|
bus_space_unmap(ia->ia_iot, ioh, 0x2);
|
|
|
|
ia->ia_nio = 1;
|
|
ia->ia_io[0].ir_addr = 0x70;
|
|
ia->ia_io[0].ir_size = 0x02;
|
|
|
|
ia->ia_niomem = 0;
|
|
ia->ia_nirq = 0;
|
|
ia->ia_ndrq = 0;
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
mcclock_isa_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct mc146818_softc *sc = device_private(self);
|
|
struct isa_attach_args *ia = aux;
|
|
|
|
sc->sc_dev = self;
|
|
sc->sc_bst = ia->ia_iot;
|
|
if (bus_space_map(sc->sc_bst, ia->ia_io[0].ir_addr,
|
|
ia->ia_io[0].ir_size, 0, &sc->sc_bsh))
|
|
panic("mcclock_isa_attach: couldn't map clock I/O space");
|
|
|
|
sc->sc_mcread = mcclock_isa_read;
|
|
sc->sc_mcwrite = mcclock_isa_write;
|
|
|
|
mcclock_attach(sc);
|
|
}
|
|
|
|
void
|
|
mcclock_isa_write(struct mc146818_softc *sc, u_int reg, u_int datum)
|
|
{
|
|
bus_space_tag_t iot = sc->sc_bst;
|
|
bus_space_handle_t ioh = sc->sc_bsh;
|
|
|
|
bus_space_write_1(iot, ioh, 0, reg);
|
|
bus_space_write_1(iot, ioh, 1, datum);
|
|
}
|
|
|
|
u_int
|
|
mcclock_isa_read(struct mc146818_softc *sc, u_int reg)
|
|
{
|
|
bus_space_tag_t iot = sc->sc_bst;
|
|
bus_space_handle_t ioh = sc->sc_bsh;
|
|
|
|
bus_space_write_1(iot, ioh, 0, reg);
|
|
return bus_space_read_1(iot, ioh, 1);
|
|
}
|