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gio.c revision 1.2 
      1 /*	$NetBSD: gio.c,v 1.2 2002/03/13 13:12:27 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Soren S. Jorvang
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *          This product includes software developed for the
     18  *          NetBSD Project.  See http://www.netbsd.org/ for
     19  *          information about NetBSD.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include "opt_ddb.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <sgimips/gio/gioreg.h>
     42 #include <sgimips/gio/giovar.h>
     43 
     44 #include "locators.h"
     45 
     46 struct gio_softc {
     47 	struct	device sc_dev;
     48 };
     49 
     50 static int	gio_match(struct device *, struct cfdata *, void *);
     51 static void	gio_attach(struct device *, struct device *, void *);
     52 static int	gio_print(void *, const char *);
     53 static int	gio_search(struct device *, struct cfdata *, void *);
     54 
     55 struct cfattach gio_ca = {
     56 	sizeof(struct gio_softc), gio_match, gio_attach
     57 };
     58 
     59 static int
     60 gio_match(parent, match, aux)
     61 	struct device *parent;
     62 	struct cfdata *match;
     63 	void *aux;
     64 {
     65 	struct giobus_attach_args *gba = aux;
     66 
     67 	if (strcmp(gba->gba_busname, match->cf_driver->cd_name) != 0)
     68 		return 0;
     69 
     70 	return 1;
     71 }
     72 
     73 static void
     74 gio_attach(parent, self, aux)
     75 	struct device *parent;
     76 	struct device *self;
     77 	void *aux;
     78 {
     79 	struct gio_attach_args ga;
     80 
     81 	printf("\n");
     82 
     83 	config_search(gio_search, self, &ga);
     84 }
     85 
     86 static int
     87 gio_print(aux, pnp)
     88 	void *aux;
     89 	const char *pnp;
     90 {
     91 	struct gio_attach_args *ga = aux;
     92 
     93 	if (pnp != 0)
     94 		return QUIET;
     95 
     96 	if (ga->ga_slot != GIOCF_SLOT_DEFAULT)
     97 		printf(" slot %d", ga->ga_slot);
     98 	if (ga->ga_addr != GIOCF_ADDR_DEFAULT)
     99 		printf(" addr 0x%x", ga->ga_addr);
    100 
    101 	return UNCONF;
    102 }
    103 
    104 static int
    105 gio_search(parent, cf, aux)
    106 	struct device *parent;
    107 	struct cfdata *cf;
    108 	void *aux;
    109 {
    110 	struct gio_attach_args *ga = aux;
    111 
    112 	do {
    113 		ga->ga_slot = cf->cf_loc[GIOCF_SLOT];
    114 		ga->ga_addr = cf->cf_loc[GIOCF_ADDR];
    115 		ga->ga_iot = 0;
    116 		ga->ga_ioh = MIPS_PHYS_TO_KSEG1(ga->ga_addr);
    117 		if ((*cf->cf_attach->ca_match)(parent, cf, ga) > 0)
    118 			config_attach(parent, cf, ga, gio_print);
    119 	} while (cf->cf_fstate == FSTATE_STAR);
    120 
    121 	return 0;
    122 }
    123