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isa.c revision 1.84 
      1 /*	$NetBSD: isa.c,v 1.84 1996/05/12 23:53:01 mycroft 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 <dev/isa/isareg.h>
     40 #include <dev/isa/isavar.h>
     41 
     42 int isamatch __P((struct device *, void *, void *));
     43 void isaattach __P((struct device *, struct device *, void *));
     44 int isaprint __P((void *, char *));
     45 
     46 struct cfattach isa_ca = {
     47 	sizeof(struct isa_softc), isamatch, isaattach
     48 };
     49 
     50 struct cfdriver isa_cd = {
     51 	NULL, "isa", DV_DULL, 1
     52 };
     53 
     54 int
     55 isamatch(parent, match, aux)
     56 	struct device *parent;
     57 	void *match, *aux;
     58 {
     59 	struct cfdata *cf = match;
     60 	struct isabus_attach_args *iba = aux;
     61 
     62 	if (strcmp(iba->iba_busname, cf->cf_driver->cd_name))
     63 		return (0);
     64 
     65 	/* XXX check other indicators */
     66 
     67         return (1);
     68 }
     69 
     70 void
     71 isaattach(parent, self, aux)
     72 	struct device *parent, *self;
     73 	void *aux;
     74 {
     75 	struct isa_softc *sc = (struct isa_softc *)self;
     76 	struct isabus_attach_args *iba = aux;
     77 
     78 	isa_attach_hook(parent, self, iba);
     79 	printf("\n");
     80 
     81 	sc->sc_bc = iba->iba_bc;
     82 	sc->sc_ic = iba->iba_ic;
     83 
     84 	/*
     85 	 * Map port 0x84, which causes a 1.25us delay when read.
     86 	 * We do this now, since several drivers need it.
     87 	 */
     88 	if (bus_io_map(sc->sc_bc, 0x84, 1, &sc->sc_delayioh))
     89 		panic("isaattach: can't map `delay port'");	/* XXX */
     90 
     91 	TAILQ_INIT(&sc->sc_subdevs);
     92 	config_scan(isascan, self);
     93 }
     94 
     95 int
     96 isaprint(aux, isa)
     97 	void *aux;
     98 	char *isa;
     99 {
    100 	struct isa_attach_args *ia = aux;
    101 
    102 	if (ia->ia_iosize)
    103 		printf(" port 0x%x", ia->ia_iobase);
    104 	if (ia->ia_iosize > 1)
    105 		printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
    106 	if (ia->ia_msize)
    107 		printf(" iomem 0x%x", ia->ia_maddr);
    108 	if (ia->ia_msize > 1)
    109 		printf("-0x%x", ia->ia_maddr + ia->ia_msize - 1);
    110 	if (ia->ia_irq != IRQUNK)
    111 		printf(" irq %d", ia->ia_irq);
    112 	if (ia->ia_drq != DRQUNK)
    113 		printf(" drq %d", ia->ia_drq);
    114 	return (UNCONF);
    115 }
    116 
    117 void
    118 isascan(parent, match)
    119 	struct device *parent;
    120 	void *match;
    121 {
    122 	struct isa_softc *sc = (struct isa_softc *)parent;
    123 	struct device *dev = match;
    124 	struct cfdata *cf = dev->dv_cfdata;
    125 	struct isa_attach_args ia;
    126 
    127 	if (cf->cf_fstate == FSTATE_STAR)
    128 		panic("clone devices not supported on ISA bus");
    129 
    130 	ia.ia_bc = sc->sc_bc;
    131 	ia.ia_ic = sc->sc_ic;
    132 	ia.ia_iobase = cf->cf_loc[0];
    133 	ia.ia_iosize = 0x666;
    134 	ia.ia_maddr = cf->cf_loc[2];
    135 	ia.ia_msize = cf->cf_loc[3];
    136 	ia.ia_irq = cf->cf_loc[4] == 2 ? 9 : cf->cf_loc[4];
    137 	ia.ia_drq = cf->cf_loc[5];
    138 	ia.ia_delayioh = sc->sc_delayioh;
    139 
    140 	if ((*cf->cf_attach->ca_match)(parent, dev, &ia) > 0)
    141 		config_attach(parent, dev, &ia, isaprint);
    142 	else
    143 		free(dev, M_DEVBUF);
    144 }
    145 
    146 char *
    147 isa_intr_typename(type)
    148 	int type;
    149 {
    150 
    151 	switch (type) {
    152         case IST_NONE :
    153 		return ("none");
    154         case IST_PULSE:
    155 		return ("pulsed");
    156         case IST_EDGE:
    157 		return ("edge-triggered");
    158         case IST_LEVEL:
    159 		return ("level-triggered");
    160 	default:
    161 		panic("isa_intr_typename: invalid type %d", type);
    162 	}
    163 }
    164