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isa.c revision 1.59 
      1 /*	$NetBSD: isa.c,v 1.59 1994/11/03 23:53:19 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 <i386/isa/isareg.h>
     40 #include <i386/isa/isavar.h>
     41 
     42 /* sorry, has to be here, no place else really suitable */
     43 #include <machine/pc/display.h>
     44 u_short *Crtat = (u_short *)MONO_BUF;
     45 
     46 int isamatch __P((struct device *, void *, void *));
     47 void isaattach __P((struct device *, struct device *, void *));
     48 
     49 int
     50 isamatch(parent, match, aux)
     51 	struct device *parent;
     52 	void *match, *aux;
     53 {
     54 
     55 	return (1);
     56 }
     57 
     58 int
     59 isaprint(aux, isa)
     60 	void *aux;
     61 	char *isa;
     62 {
     63 	struct isa_attach_args *ia = aux;
     64 
     65 	if (ia->ia_iosize)
     66 		printf(" port 0x%x", ia->ia_iobase);
     67 	if (ia->ia_iosize > 1)
     68 		printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
     69 	if (ia->ia_msize)
     70 		printf(" iomem 0x%x", ia->ia_maddr - atdevbase + 0xa0000);
     71 	if (ia->ia_msize > 1)
     72 		printf("-0x%x",
     73 		    ia->ia_maddr - atdevbase + 0xa0000 + ia->ia_msize - 1);
     74 	if (ia->ia_irq)
     75 		printf(" irq %d", ffs(ia->ia_irq) - 1);
     76 	if (ia->ia_drq != (u_short)-1)
     77 		printf(" drq %d", ia->ia_drq);
     78 	/* XXXX print flags */
     79 	return (QUIET);
     80 }
     81 
     82 int
     83 isasubmatch(parent, match, aux)
     84 	struct device *parent;
     85 	void *match, *aux;
     86 {
     87 	struct cfdata *cf = self->dv_cfdata;
     88 	struct isa_attach_args ia;
     89 
     90 	ia.ia_iobase = cf->cf_loc[0];
     91 	ia.ia_iosize = 0x666;
     92 	ia.ia_maddr = cf->cf_loc[2] - 0xa0000 + atdevbase;
     93 	ia.ia_msize = cf->cf_loc[3];
     94 	ia.ia_irq = cf->cf_loc[4];
     95 	ia.ia_drq = cf->cf_loc[5];
     96 
     97 	if ((*id->id_driver->cd_match)(parent, match, &ia) <= 0) {
     98 		/*
     99 		 * If we don't do this, isaattach() will repeatedly try to
    100 		 * probe devices that weren't found.  But we need to be careful
    101 		 * to do it only for the ISA bus, or we would cause things like
    102 		 * `com0 at ast? slave ?' to not probe on the second ast.
    103 		 */
    104 		if (parent->dv_cfdata->cf_driver == &isacd)
    105 			id->id_state = FSTATE_FOUND;
    106 		return (0);
    107 	}
    108 
    109 	config_attach(parent, match, &ia, isaprint);
    110 	return (1);
    111 }
    112 
    113 void
    114 isaattach(parent, self, aux)
    115 	struct device *parent, *self;
    116 	void *aux;
    117 {
    118 
    119 	while (config_search(isasubmatch, self, NULL));
    120 }
    121