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isa.c revision 1.101 
      1 /*	$NetBSD: isa.c,v 1.101 1998/06/09 00:00:21 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1993, 1994 Charles Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/kernel.h>
     35 #include <sys/conf.h>
     36 #include <sys/malloc.h>
     37 #include <sys/device.h>
     38 
     39 #include <machine/intr.h>
     40 
     41 #include <dev/isa/isareg.h>
     42 #include <dev/isa/isavar.h>
     43 #include <dev/isa/isadmareg.h>
     44 
     45 int isamatch __P((struct device *, struct cfdata *, void *));
     46 void isaattach __P((struct device *, struct device *, void *));
     47 int isaprint __P((void *, const char *));
     48 
     49 struct cfattach isa_ca = {
     50 	sizeof(struct isa_softc), isamatch, isaattach
     51 };
     52 
     53 int	isasearch __P((struct device *, struct cfdata *, void *));
     54 
     55 int
     56 isamatch(parent, cf, aux)
     57 	struct device *parent;
     58 	struct cfdata *cf;
     59 	void *aux;
     60 {
     61 	struct isabus_attach_args *iba = aux;
     62 
     63 	if (strcmp(iba->iba_busname, cf->cf_driver->cd_name))
     64 		return (0);
     65 
     66 	/* XXX check other indicators */
     67 
     68         return (1);
     69 }
     70 
     71 void
     72 isaattach(parent, self, aux)
     73 	struct device *parent, *self;
     74 	void *aux;
     75 {
     76 	struct isa_softc *sc = (struct isa_softc *)self;
     77 	struct isabus_attach_args *iba = aux;
     78 
     79 	isa_attach_hook(parent, self, iba);
     80 	printf("\n");
     81 
     82 	sc->sc_iot = iba->iba_iot;
     83 	sc->sc_memt = iba->iba_memt;
     84 	sc->sc_dmat = iba->iba_dmat;
     85 	sc->sc_ic = iba->iba_ic;
     86 
     87 	/*
     88 	 * Initialize our DMA state.
     89 	 */
     90 	isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self);
     91 
     92 	TAILQ_INIT(&sc->sc_subdevs);
     93 
     94 	config_search(isasearch, self, NULL);
     95 }
     96 
     97 int
     98 isaprint(aux, isa)
     99 	void *aux;
    100 	const char *isa;
    101 {
    102 	struct isa_attach_args *ia = aux;
    103 
    104 	if (ia->ia_iosize)
    105 		printf(" port 0x%x", ia->ia_iobase);
    106 	if (ia->ia_iosize > 1)
    107 		printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
    108 	if (ia->ia_msize)
    109 		printf(" iomem 0x%x", ia->ia_maddr);
    110 	if (ia->ia_msize > 1)
    111 		printf("-0x%x", ia->ia_maddr + ia->ia_msize - 1);
    112 	if (ia->ia_irq != IRQUNK)
    113 		printf(" irq %d", ia->ia_irq);
    114 	if (ia->ia_drq != DRQUNK)
    115 		printf(" drq %d", ia->ia_drq);
    116 	if (ia->ia_drq2 != DRQUNK)
    117 		printf(" drq2 %d", ia->ia_drq2);
    118 	return (UNCONF);
    119 }
    120 
    121 int
    122 isasearch(parent, cf, aux)
    123 	struct device *parent;
    124 	struct cfdata *cf;
    125 	void *aux;
    126 {
    127 	struct isa_softc *sc = (struct isa_softc *)parent;
    128 	struct isa_attach_args ia;
    129 	int tryagain;
    130 
    131 	do {
    132 		ia.ia_iot = sc->sc_iot;
    133 		ia.ia_memt = sc->sc_memt;
    134 		ia.ia_dmat = sc->sc_dmat;
    135 		ia.ia_ic = sc->sc_ic;
    136 		ia.ia_iobase = cf->cf_iobase;
    137 		ia.ia_iosize = 0x666; /* cf->cf_iosize; */
    138 		ia.ia_maddr = cf->cf_maddr;
    139 		ia.ia_msize = cf->cf_msize;
    140 		ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq;
    141 		ia.ia_drq = cf->cf_drq;
    142 		ia.ia_drq2 = cf->cf_drq2;
    143 
    144 		tryagain = 0;
    145 		if ((*cf->cf_attach->ca_match)(parent, cf, &ia) > 0) {
    146 			config_attach(parent, cf, &ia, isaprint);
    147 			tryagain = (cf->cf_fstate == FSTATE_STAR);
    148 		}
    149 	} while (tryagain);
    150 
    151 	return (0);
    152 }
    153 
    154 char *
    155 isa_intr_typename(type)
    156 	int type;
    157 {
    158 
    159 	switch (type) {
    160         case IST_NONE :
    161 		return ("none");
    162         case IST_PULSE:
    163 		return ("pulsed");
    164         case IST_EDGE:
    165 		return ("edge-triggered");
    166         case IST_LEVEL:
    167 		return ("level-triggered");
    168 	default:
    169 		panic("isa_intr_typename: invalid type %d", type);
    170 	}
    171 }
    172