148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/* $NetBSD: lm_isa.c,v 1.16 2007/03/07 17:32:47 xtraeme Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Bill Squier.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.16 2007/03/07 17:32:47 xtraeme Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <dev/ic/nslm7xvar.h>
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#if defined(LMDEBUG)
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#define DPRINTF(x) do { printf x; } while (0)
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#else
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#define DPRINTF(x)
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#endif
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int lm_isa_match(struct device *, struct cfdata *, void *);
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void lm_isa_attach(struct device *, struct device *, void *);
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uint8_t lm_isa_readreg(struct lm_softc *, int);
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void lm_isa_writereg(struct lm_softc *, int, int);
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CFATTACH_DECL(lm_isa, sizeof(struct lm_softc),
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lm_isa_match, lm_isa_attach, NULL, NULL);
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int
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lm_isa_match(struct device *parent, struct cfdata *match, void *aux)
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{
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bus_space_handle_t ioh;
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struct isa_attach_args *ia = aux;
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int rv;
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/* Must supply an address */
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if (ia->ia_nio < 1)
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return 0;
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if (ISA_DIRECT_CONFIG(ia))
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return 0;
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return 0;
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh))
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return 0;
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/* Bus independent probe */
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rv = lm_probe(ia->ia_iot, ioh);
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bus_space_unmap(ia->ia_iot, ioh, 8);
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if (rv) {
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = 8;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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}
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return rv;
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}
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void
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lm_isa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct lm_softc *lmsc = (void *)self;
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struct isa_attach_args *ia = aux;
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lmsc->lm_iot = ia->ia_iot;
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0,
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&lmsc->lm_ioh)) {
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aprint_error(": can't map i/o space\n");
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return;
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}
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/* Bus-independent attachment */
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lmsc->lm_writereg = lm_isa_writereg;
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lmsc->lm_readreg = lm_isa_readreg;
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lm_attach(lmsc);
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}
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uint8_t
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lm_isa_readreg(struct lm_softc *sc, int reg)
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{
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
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return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA);
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}
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void
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lm_isa_writereg(struct lm_softc *sc, int reg, int val)
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{
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
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bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
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}
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