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isa.c revision 1.89 
      1 /*	$NetBSD: isa.c,v 1.89 1996/10/21 22:41:09 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 
     44 int isamatch __P((struct device *, void *, void *));
     45 void isaattach __P((struct device *, struct device *, void *));
     46 int isaprint __P((void *, const char *));
     47 
     48 struct cfattach isa_ca = {
     49 	sizeof(struct isa_softc), isamatch, isaattach
     50 };
     51 
     52 struct cfdriver isa_cd = {
     53 	NULL, "isa", DV_DULL, 1
     54 };
     55 
     56 int
     57 isamatch(parent, match, aux)
     58 	struct device *parent;
     59 	void *match, *aux;
     60 {
     61 	struct cfdata *cf = match;
     62 	struct isabus_attach_args *iba = aux;
     63 
     64 	if (strcmp(iba->iba_busname, cf->cf_driver->cd_name))
     65 		return (0);
     66 
     67 	/* XXX check other indicators */
     68 
     69         return (1);
     70 }
     71 
     72 void
     73 isaattach(parent, self, aux)
     74 	struct device *parent, *self;
     75 	void *aux;
     76 {
     77 	struct isa_softc *sc = (struct isa_softc *)self;
     78 	struct isabus_attach_args *iba = aux;
     79 
     80 	isa_attach_hook(parent, self, iba);
     81 	printf("\n");
     82 
     83 	sc->sc_iot = iba->iba_iot;
     84 	sc->sc_memt = iba->iba_memt;
     85 	sc->sc_ic = iba->iba_ic;
     86 
     87 	/*
     88 	 * Map port 0x84, which causes a 1.25us delay when read.
     89 	 * We do this now, since several drivers need it.
     90 	 */
     91 	if (bus_space_map(sc->sc_iot, 0x84, 1, 0, &sc->sc_delaybah))
     92 		panic("isaattach: can't map `delay port'");	/* XXX */
     93 
     94 	TAILQ_INIT(&sc->sc_subdevs);
     95 	config_scan(isascan, self);
     96 }
     97 
     98 int
     99 isaprint(aux, isa)
    100 	void *aux;
    101 	const char *isa;
    102 {
    103 	struct isa_attach_args *ia = aux;
    104 
    105 	if (ia->ia_iosize)
    106 		printf(" port 0x%x", ia->ia_iobase);
    107 	if (ia->ia_iosize > 1)
    108 		printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
    109 	if (ia->ia_msize)
    110 		printf(" iomem 0x%x", ia->ia_maddr);
    111 	if (ia->ia_msize > 1)
    112 		printf("-0x%x", ia->ia_maddr + ia->ia_msize - 1);
    113 	if (ia->ia_irq != IRQUNK)
    114 		printf(" irq %d", ia->ia_irq);
    115 	if (ia->ia_drq != DRQUNK)
    116 		printf(" drq %d", ia->ia_drq);
    117 	return (UNCONF);
    118 }
    119 
    120 void
    121 isascan(parent, match)
    122 	struct device *parent;
    123 	void *match;
    124 {
    125 	struct isa_softc *sc = (struct isa_softc *)parent;
    126 	struct device *dev = match;
    127 	struct cfdata *cf = dev->dv_cfdata;
    128 	struct isa_attach_args ia;
    129 
    130 	if (cf->cf_fstate == FSTATE_STAR)
    131 		panic("clone devices not supported on ISA bus");
    132 
    133 	ia.ia_iot = sc->sc_iot;
    134 	ia.ia_memt = sc->sc_memt;
    135 	ia.ia_ic = sc->sc_ic;
    136 	ia.ia_iobase = cf->cf_loc[0];
    137 	ia.ia_iosize = 0x666;
    138 	ia.ia_maddr = cf->cf_loc[2];
    139 	ia.ia_msize = cf->cf_loc[3];
    140 	ia.ia_irq = cf->cf_loc[4] == 2 ? 9 : cf->cf_loc[4];
    141 	ia.ia_drq = cf->cf_loc[5];
    142 	ia.ia_delaybah = sc->sc_delaybah;
    143 
    144 	if ((*cf->cf_attach->ca_match)(parent, dev, &ia) > 0)
    145 		config_attach(parent, dev, &ia, isaprint);
    146 	else
    147 		free(dev, M_DEVBUF);
    148 }
    149 
    150 char *
    151 isa_intr_typename(type)
    152 	int type;
    153 {
    154 
    155 	switch (type) {
    156         case IST_NONE :
    157 		return ("none");
    158         case IST_PULSE:
    159 		return ("pulsed");
    160         case IST_EDGE:
    161 		return ("edge-triggered");
    162         case IST_LEVEL:
    163 		return ("level-triggered");
    164 	default:
    165 		panic("isa_intr_typename: invalid type %d", type);
    166 	}
    167 }
    168