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lm_isa.c revision 1.19.4.1 
      1 /*	$NetBSD: lm_isa.c,v 1.19.4.1 2008/05/16 02:24:27 yamt 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: lm_isa.c,v 1.19.4.1 2008/05/16 02:24:27 yamt Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/systm.h>
     37 #include <sys/kernel.h>
     38 #include <sys/device.h>
     39 #include <sys/conf.h>
     40 
     41 #include <sys/bus.h>
     42 
     43 #include <dev/isa/isareg.h>
     44 #include <dev/isa/isavar.h>
     45 
     46 #include <dev/sysmon/sysmonvar.h>
     47 
     48 #include <dev/ic/nslm7xvar.h>
     49 
     50 int 	lm_isa_match(device_t, cfdata_t, void *);
     51 void 	lm_isa_attach(device_t, device_t, void *);
     52 int 	lm_isa_detach(device_t, int);
     53 
     54 uint8_t lm_isa_readreg(struct lm_softc *, int);
     55 void 	lm_isa_writereg(struct lm_softc *, int, int);
     56 
     57 CFATTACH_DECL_NEW(lm_isa, sizeof(struct lm_softc),
     58     lm_isa_match, lm_isa_attach, lm_isa_detach, NULL);
     59 
     60 int
     61 lm_isa_match(device_t parent, cfdata_t match, void *aux)
     62 {
     63 	bus_space_handle_t ioh;
     64 	struct isa_attach_args *ia = aux;
     65 	int rv;
     66 
     67 	/* Must supply an address */
     68 	if (ia->ia_nio < 1)
     69 		return 0;
     70 
     71 	if (ISA_DIRECT_CONFIG(ia))
     72 		return 0;
     73 
     74 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     75 		return 0;
     76 
     77 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0, &ioh))
     78 		return 0;
     79 
     80 
     81 	/* Bus independent probe */
     82 	rv = lm_probe(ia->ia_iot, ioh);
     83 
     84 	bus_space_unmap(ia->ia_iot, ioh, 8);
     85 
     86 	if (rv) {
     87 		ia->ia_nio = 1;
     88 		ia->ia_io[0].ir_size = 8;
     89 
     90 		ia->ia_niomem = 0;
     91 		ia->ia_nirq = 0;
     92 		ia->ia_ndrq = 0;
     93 	}
     94 
     95 	return rv;
     96 }
     97 
     98 
     99 void
    100 lm_isa_attach(device_t parent, device_t self, void *aux)
    101 {
    102 	struct lm_softc *lmsc = device_private(self);
    103 	struct isa_attach_args *ia = aux;
    104 
    105 	lmsc->lm_iot = ia->ia_iot;
    106 
    107 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8, 0,
    108 	    &lmsc->lm_ioh)) {
    109 		aprint_error(": can't map i/o space\n");
    110 		return;
    111 	}
    112 
    113 	/* Bus-independent attachment */
    114 	lmsc->sc_dev = self;
    115 	lmsc->lm_writereg = lm_isa_writereg;
    116 	lmsc->lm_readreg = lm_isa_readreg;
    117 
    118 	lm_attach(lmsc);
    119 }
    120 
    121 int
    122 lm_isa_detach(device_t self, int flags)
    123 {
    124 	struct lm_softc *lmsc = device_private(self);
    125 
    126 	lm_detach(lmsc);
    127 	bus_space_unmap(lmsc->lm_iot, lmsc->lm_ioh, 8);
    128 	return 0;
    129 }
    130 
    131 uint8_t
    132 lm_isa_readreg(struct lm_softc *sc, int reg)
    133 {
    134 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    135 	return bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA);
    136 }
    137 
    138 
    139 void
    140 lm_isa_writereg(struct lm_softc *sc, int reg, int val)
    141 {
    142 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
    143 	bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
    144 }
    145 
    146