Home | History | Annotate | Line # | Download | only in isa
lm_isa.c revision 1.16 
      1 /*	$NetBSD: lm_isa.c,v 1.16 2007/03/07 17:32:47 xtraeme 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 1.16 2007/03/07 17:32:47 xtraeme Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/device.h>
     46 #include <sys/conf.h>
     47 
     48 #include <machine/bus.h>
     49 
     50 #include <dev/isa/isareg.h>
     51 #include <dev/isa/isavar.h>
     52 
     53 #include <dev/sysmon/sysmonvar.h>
     54 
     55 #include <dev/ic/nslm7xvar.h>
     56 
     57 #if defined(LMDEBUG)
     58 #define DPRINTF(x)		do { printf x; } while (0)
     59 #else
     60 #define DPRINTF(x)
     61 #endif
     62 
     63 
     64 int lm_isa_match(struct device *, struct cfdata *, void *);
     65 void lm_isa_attach(struct device *, struct device *, void *);
     66 uint8_t lm_isa_readreg(struct lm_softc *, int);
     67 void lm_isa_writereg(struct lm_softc *, int, int);
     68 
     69 CFATTACH_DECL(lm_isa, sizeof(struct lm_softc),
     70     lm_isa_match, lm_isa_attach, NULL, NULL);
     71 
     72 
     73 int
     74 lm_isa_match(struct device *parent, struct cfdata *match, void *aux)
     75 {
     76 	bus_space_handle_t ioh;
     77 	struct isa_attach_args *ia = aux;
     78 	int rv;
     79 
     80 	/* Must supply an address */
     81 	if (ia->ia_nio < 1)
     82 		return 0;
     83 
     84 	if (ISA_DIRECT_CONFIG(ia))
     85 		return 0;
     86 
     87 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     88 		return 0;
     89 
     90 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh))
     91 		return 0;
     92 
     93 
     94 	/* Bus independent probe */
     95 	rv = lm_probe(ia->ia_iot, ioh);
     96 
     97 	bus_space_unmap(ia->ia_iot, ioh, 8);
     98 
     99 	if (rv) {
    100 		ia->ia_nio = 1;
    101 		ia->ia_io[0].ir_size = 8;
    102 
    103 		ia->ia_niomem = 0;
    104 		ia->ia_nirq = 0;
    105 		ia->ia_ndrq = 0;
    106 	}
    107 
    108 	return rv;
    109 }
    110 
    111 
    112 void
    113 lm_isa_attach(struct device *parent, struct device *self, void *aux)
    114 {
    115 	struct lm_softc *lmsc = (void *)self;
    116 	struct isa_attach_args *ia = aux;
    117 
    118 	lmsc->lm_iot = ia->ia_iot;
    119 
    120 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0,
    121 	    &lmsc->lm_ioh)) {
    122 		aprint_error(": can't map i/o space\n");
    123 		return;
    124 	}
    125 
    126 	/* Bus-independent attachment */
    127 	lmsc->lm_writereg = lm_isa_writereg;
    128 	lmsc->lm_readreg = lm_isa_readreg;
    129 
    130 	lm_attach(lmsc);
    131 }
    132 
    133 
    134 uint8_t
    135 lm_isa_readreg(struct lm_softc *sc, int reg)
    136 {
    137 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    138 	return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA);
    139 }
    140 
    141 
    142 void
    143 lm_isa_writereg(struct lm_softc *sc, int reg, int val)
    144 {
    145 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    146 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
    147 }
    148