Home | History | Annotate | Line # | Download | only in dev
uni-n.c revision 1.1 
      1 /*	$NetBSD: uni-n.c,v 1.1 2005/08/10 14:30:15 macallan Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 2005 Michael Lorenz.
      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. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 /*
     30  * a driver to match the uni_n node in OF's device tree and attach its children
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.1 2005/08/10 14:30:15 macallan Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/kernel.h>
     39 #include <sys/device.h>
     40 
     41 #include <dev/ofw/openfirm.h>
     42 
     43 #include <machine/autoconf.h>
     44 
     45 static void uni_n_attach(struct device *, struct device *, void *);
     46 static int uni_n_match(struct device *, struct cfdata *, void *);
     47 static int uni_n_print(void *, const char *);
     48 
     49 struct uni_n_softc {
     50 	struct device sc_dev;
     51 	int sc_node;
     52 };
     53 
     54 CFATTACH_DECL(uni_n, sizeof(struct uni_n_softc),
     55     uni_n_match, uni_n_attach, NULL, NULL);
     56 
     57 int
     58 uni_n_match(parent, cf, aux)
     59 	struct device *parent;
     60 	struct cfdata *cf;
     61 	void *aux;
     62 {
     63 	struct confargs *ca = aux;
     64 	char compat[32];
     65 	if (strcmp(ca->ca_name, "uni-n") != 0)
     66 		return 0;
     67 
     68 	memset(compat, 0, sizeof(compat));
     69 	OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
     70 	if (strcmp(compat, "uni-north") != 0)
     71 		return 0;
     72 
     73 	return 1;
     74 }
     75 
     76 /*
     77  * Attach all the sub-devices we can find
     78  */
     79 void
     80 uni_n_attach(parent, self, aux)
     81 	struct device *parent, *self;
     82 	void *aux;
     83 {
     84 	struct uni_n_softc *sc = (struct uni_n_softc *)self;
     85 	struct confargs *our_ca = aux;
     86 	struct confargs ca;
     87 	int node, child, namelen;
     88 	u_int reg[20];
     89 	int intr[6];
     90 	char name[32];
     91 
     92 	node = OF_finddevice("/uni-n");
     93 	sc->sc_node = node;
     94 	printf(" address 0x%08x\n",our_ca->ca_reg[0]);
     95 
     96 	for (child = OF_child(node); child; child = OF_peer(child)) {
     97 		namelen = OF_getprop(child, "name", name, sizeof(name));
     98 		if (namelen < 0)
     99 			continue;
    100 		if (namelen >= sizeof(name))
    101 			continue;
    102 
    103 		name[namelen] = 0;
    104 		ca.ca_name = name;
    105 		ca.ca_node = child;
    106 
    107 		ca.ca_nreg  = OF_getprop(child, "reg", reg, sizeof(reg));
    108 		ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
    109 				sizeof(intr));
    110 		if (ca.ca_nintr == -1)
    111 			ca.ca_nintr = OF_getprop(child, "interrupts", intr,
    112 					sizeof(intr));
    113 
    114 		ca.ca_reg = reg;
    115 		ca.ca_intr = intr;
    116 
    117 		config_found(self, &ca, uni_n_print);
    118 	}
    119 }
    120 
    121 int
    122 uni_n_print(aux, uni_n)
    123 	void *aux;
    124 	const char *uni_n;
    125 {
    126 	struct confargs *ca = aux;
    127 	if (uni_n)
    128 		aprint_normal("%s at %s", ca->ca_name, uni_n);
    129 
    130 	if (ca->ca_nreg > 0)
    131 		aprint_normal(" address 0x%x", ca->ca_reg[0]);
    132 
    133 	return UNCONF;
    134 }
    135