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ofbus.c revision 1.13 
      1 /*	$NetBSD: ofbus.c,v 1.13 2002/09/18 01:44:13 chs 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 1.13 2002/09/18 01:44:13 chs 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 struct cfattach ofbus_ca = {
     48 	sizeof(struct device), ofbus_match, ofbus_attach
     49 };
     50 
     51 static int
     52 ofbus_print(aux, pnp)
     53 	void *aux;
     54 	const char *pnp;
     55 {
     56 	struct ofbus_attach_args *oba = aux;
     57 
     58 	if (pnp)
     59 		printf("%s at %s", oba->oba_ofname, pnp);
     60 	else
     61 		printf(" (%s)", oba->oba_ofname);
     62 	return UNCONF;
     63 }
     64 
     65 int
     66 ofbus_match(parent, cf, aux)
     67 	struct device *parent;
     68 	struct cfdata *cf;
     69 	void *aux;
     70 {
     71 	struct ofbus_attach_args *oba = aux;
     72 
     73 	if (strcmp(oba->oba_busname, "ofw"))
     74 		return (0);
     75 	if (!OF_child(oba->oba_phandle))
     76 		return (0);
     77 	return (1);
     78 }
     79 
     80 void
     81 ofbus_attach(parent, dev, aux)
     82 	struct device *parent, *dev;
     83 	void *aux;
     84 {
     85 	struct ofbus_attach_args *oba = aux;
     86 	struct ofbus_attach_args oba2;
     87 	char name[64];
     88 	int child, units;
     89 
     90 	printf("\n");
     91 
     92 	/*
     93 	 * This is a hack to make the probe work on the scsi (and ide) bus.
     94 	 * YES, I THINK IT IS A BUG IN THE OPENFIRMWARE TO NOT PROBE ALL
     95 	 * DEVICES ON THESE BUSSES.
     96 	 */
     97 	units = 1;
     98 	name[0] = 0;
     99 	if (OF_getprop(oba->oba_phandle, "name", name, sizeof name) > 0) {
    100 		if (!strcmp(name, "scsi"))
    101 			units = 7; /* What about wide or hostid != 7?	XXX */
    102 		else if (!strcmp(name, "ide"))
    103 			units = 2;
    104 	}
    105 
    106 	for (child = OF_child(oba->oba_phandle); child != 0;
    107 	     child = OF_peer(child)) {
    108 		oba2.oba_busname = "ofw";
    109 		of_packagename(child, name, sizeof name);
    110 		oba2.oba_phandle = child;
    111 		for (oba2.oba_unit = 0; oba2.oba_unit < units;
    112 		     oba2.oba_unit++) {
    113 			if (units > 1) {
    114 				sprintf(oba2.oba_ofname, "%s@%d", name,
    115 					oba2.oba_unit);
    116 			} else {
    117 				strcpy(oba2.oba_ofname, name);
    118 			}
    119 			config_found(dev, &oba2, ofbus_print);
    120 		}
    121 	}
    122 }
    123