NetBSD/sys/dev/isa/lm_isa.c

171 lines
4.4 KiB
C

/* $NetBSD: lm_isa.c,v 1.10 2004/09/14 20:20:48 drochner Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bill Squier.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.10 2004/09/14 20:20:48 drochner Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/ic/nslm7xvar.h>
#if defined(LMDEBUG)
#define DPRINTF(x) do { printf x; } while (0)
#else
#define DPRINTF(x)
#endif
int lm_isa_match(struct device *, struct cfdata *, void *);
void lm_isa_attach(struct device *, struct device *, void *);
u_int8_t lm_isa_readreg(struct lm_softc *, int);
void lm_isa_writereg(struct lm_softc *, int, int);
CFATTACH_DECL(lm_isa, sizeof(struct lm_softc),
lm_isa_match, lm_isa_attach, NULL, NULL);
int
lm_isa_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct isa_attach_args *ia = aux;
int iobase;
int rv;
/* Must supply an address */
if (ia->ia_nio < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);
iot = ia->ia_iot;
iobase = ia->ia_io[0].ir_addr;
if (bus_space_map(iot, iobase, 8, 0, &ioh))
return (0);
/* Bus independent probe */
rv = lm_probe(iot, ioh);
bus_space_unmap(iot, ioh, 8);
if (rv) {
ia->ia_nio = 1;
ia->ia_io[0].ir_size = 8;
ia->ia_niomem = 0;
ia->ia_nirq = 0;
ia->ia_ndrq = 0;
}
return (rv);
}
void
lm_isa_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct lm_softc *lmsc = (void *)self;
int iobase;
bus_space_tag_t iot;
struct isa_attach_args *ia = aux;
iobase = ia->ia_io[0].ir_addr;
iot = lmsc->lm_iot = ia->ia_iot;
if (bus_space_map(iot, iobase, 8, 0, &lmsc->lm_ioh)) {
printf(": can't map i/o space\n");
return;
}
/* Bus-independant attachment */
lmsc->lm_writereg = lm_isa_writereg;
lmsc->lm_readreg = lm_isa_readreg;
lm_attach(lmsc);
}
u_int8_t
lm_isa_readreg(sc, reg)
struct lm_softc *sc;
int reg;
{
bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
}
void
lm_isa_writereg(sc, reg, val)
struct lm_softc *sc;
int reg;
int val;
{
bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
}