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ofbus.c revision 1.18 
      1 /*	$NetBSD: ofbus.c,v 1.18 2004/04/22 00:17:12 itojun Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: ofbus.c,v 1.18 2004/04/22 00:17:12 itojun Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <dev/ofw/openfirm.h>
     42 
     43 int ofbus_match __P((struct device *, struct cfdata *, void *));
     44 void ofbus_attach __P((struct device *, struct device *, void *));
     45 static int ofbus_print __P((void *, const char *));
     46 
     47 CFATTACH_DECL(ofbus, sizeof(struct device),
     48     ofbus_match, ofbus_attach, NULL, NULL);
     49 
     50 static int
     51 ofbus_print(aux, pnp)
     52 	void *aux;
     53 	const char *pnp;
     54 {
     55 	struct ofbus_attach_args *oba = aux;
     56 
     57 	if (pnp)
     58 		aprint_normal("%s at %s", oba->oba_ofname, pnp);
     59 	else
     60 		aprint_normal(" (%s)", oba->oba_ofname);
     61 	return UNCONF;
     62 }
     63 
     64 int
     65 ofbus_match(parent, cf, aux)
     66 	struct device *parent;
     67 	struct cfdata *cf;
     68 	void *aux;
     69 {
     70 	struct ofbus_attach_args *oba = aux;
     71 
     72 	if (strcmp(oba->oba_busname, "ofw"))
     73 		return (0);
     74 	if (!OF_child(oba->oba_phandle))
     75 		return (0);
     76 	return (1);
     77 }
     78 
     79 void
     80 ofbus_attach(parent, dev, aux)
     81 	struct device *parent, *dev;
     82 	void *aux;
     83 {
     84 	struct ofbus_attach_args *oba = aux;
     85 	struct ofbus_attach_args oba2;
     86 	char name[64];
     87 	int child, units;
     88 
     89 	printf("\n");
     90 
     91 	/*
     92 	 * This is a hack to make the probe work on the scsi (and ide) bus.
     93 	 * YES, I THINK IT IS A BUG IN THE OPENFIRMWARE TO NOT PROBE ALL
     94 	 * DEVICES ON THESE BUSSES.
     95 	 */
     96 	units = 1;
     97 	name[0] = 0;
     98 	if (OF_getprop(oba->oba_phandle, "name", name, sizeof name) > 0) {
     99 		if (!strcmp(name, "scsi"))
    100 			units = 7; /* What about wide or hostid != 7?	XXX */
    101 		else if (!strcmp(name, "ide"))
    102 			units = 2;
    103 	}
    104 
    105 	for (child = OF_child(oba->oba_phandle); child != 0;
    106 	     child = OF_peer(child)) {
    107 		oba2.oba_busname = "ofw";
    108 		of_packagename(child, name, sizeof name);
    109 		oba2.oba_phandle = child;
    110 		for (oba2.oba_unit = 0; oba2.oba_unit < units;
    111 		     oba2.oba_unit++) {
    112 			if (units > 1) {
    113 				snprintf(oba2.oba_ofname,
    114 				    sizeof(oba2.oba_ofname), "%s@%d", name,
    115 				    oba2.oba_unit);
    116 			} else {
    117 				strlcpy(oba2.oba_ofname, name,
    118 				    sizeof(oba2.oba_ofname));
    119 			}
    120 			config_found(dev, &oba2, ofbus_print);
    121 		}
    122 	}
    123 }
    124