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lm_isa.c revision 1.14 
      1 /*	$NetBSD: lm_isa.c,v 1.14 2006/11/24 22:04:25 wiz Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Bill Squier.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.14 2006/11/24 22:04:25 wiz Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/proc.h>
     46 #include <sys/device.h>
     47 #include <sys/malloc.h>
     48 #include <sys/errno.h>
     49 #include <sys/conf.h>
     50 
     51 #include <machine/bus.h>
     52 
     53 #include <dev/isa/isareg.h>
     54 #include <dev/isa/isavar.h>
     55 
     56 #include <machine/intr.h>
     57 #include <machine/bus.h>
     58 
     59 #include <dev/sysmon/sysmonvar.h>
     60 
     61 #include <dev/ic/nslm7xvar.h>
     62 
     63 #if defined(LMDEBUG)
     64 #define DPRINTF(x)		do { printf x; } while (0)
     65 #else
     66 #define DPRINTF(x)
     67 #endif
     68 
     69 
     70 int lm_isa_match(struct device *, struct cfdata *, void *);
     71 void lm_isa_attach(struct device *, struct device *, void *);
     72 u_int8_t lm_isa_readreg(struct lm_softc *, int);
     73 void lm_isa_writereg(struct lm_softc *, int, int);
     74 
     75 CFATTACH_DECL(lm_isa, sizeof(struct lm_softc),
     76     lm_isa_match, lm_isa_attach, NULL, NULL);
     77 
     78 
     79 int
     80 lm_isa_match(struct device *parent, struct cfdata *match,
     81     void *aux)
     82 {
     83 	bus_space_tag_t iot;
     84 	bus_space_handle_t ioh;
     85 	struct isa_attach_args *ia = aux;
     86 	int iobase;
     87 	int rv;
     88 
     89 	/* Must supply an address */
     90 	if (ia->ia_nio < 1)
     91 		return (0);
     92 
     93 	if (ISA_DIRECT_CONFIG(ia))
     94 		return (0);
     95 
     96 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     97 		return (0);
     98 
     99 	iot = ia->ia_iot;
    100 	iobase = ia->ia_io[0].ir_addr;
    101 
    102 	if (bus_space_map(iot, iobase, 8, 0, &ioh))
    103 		return (0);
    104 
    105 
    106 	/* Bus independent probe */
    107 	rv = lm_probe(iot, ioh);
    108 
    109 	bus_space_unmap(iot, ioh, 8);
    110 
    111 	if (rv) {
    112 		ia->ia_nio = 1;
    113 		ia->ia_io[0].ir_size = 8;
    114 
    115 		ia->ia_niomem = 0;
    116 		ia->ia_nirq = 0;
    117 		ia->ia_ndrq = 0;
    118 	}
    119 
    120 	return (rv);
    121 }
    122 
    123 
    124 void
    125 lm_isa_attach(struct device *parent, struct device *self, void *aux)
    126 {
    127 	struct lm_softc *lmsc = (void *)self;
    128 	int iobase;
    129 	bus_space_tag_t iot;
    130 	struct isa_attach_args *ia = aux;
    131 
    132         iobase = ia->ia_io[0].ir_addr;
    133 	iot = lmsc->lm_iot = ia->ia_iot;
    134 
    135 	if (bus_space_map(iot, iobase, 8, 0, &lmsc->lm_ioh)) {
    136 		printf(": can't map i/o space\n");
    137 		return;
    138 	}
    139 
    140 	/* Bus-independent attachment */
    141 	lmsc->lm_writereg = lm_isa_writereg;
    142 	lmsc->lm_readreg = lm_isa_readreg;
    143 
    144 	lm_attach(lmsc);
    145 }
    146 
    147 
    148 u_int8_t
    149 lm_isa_readreg(sc, reg)
    150 	struct lm_softc *sc;
    151 	int reg;
    152 {
    153 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    154 	return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
    155 }
    156 
    157 
    158 void
    159 lm_isa_writereg(sc, reg, val)
    160 	struct lm_softc *sc;
    161 	int reg;
    162 	int val;
    163 {
    164 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    165 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
    166 }
    167