dummy driver to represent the uni-n node in OF and attach its children

sys/arch/macppc/dev/uni-n.c

@@ -0,0 +1,134 @@
+/*	$NetBSD: uni-n.c,v 1.1 2005/08/10 14:30:15 macallan Exp $	*/
+
+/*-
+ * Copyright (C) 2005 Michael Lorenz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * a driver to match the uni_n node in OF's device tree and attach its children 
+ */
+ 
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: uni-n.c,v 1.1 2005/08/10 14:30:15 macallan Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include <machine/autoconf.h>
+
+static void uni_n_attach(struct device *, struct device *, void *);
+static int uni_n_match(struct device *, struct cfdata *, void *);
+static int uni_n_print(void *, const char *);
+
+struct uni_n_softc {
+	struct device sc_dev;
+	int sc_node;
+};
+
+CFATTACH_DECL(uni_n, sizeof(struct uni_n_softc),
+    uni_n_match, uni_n_attach, NULL, NULL);
+
+int
+uni_n_match(parent, cf, aux)
+	struct device *parent;
+	struct cfdata *cf;
+	void *aux;
+{
+	struct confargs *ca = aux;
+	char compat[32];
+	if (strcmp(ca->ca_name, "uni-n") != 0)
+		return 0;
+
+	memset(compat, 0, sizeof(compat));
+	OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
+	if (strcmp(compat, "uni-north") != 0)
+		return 0;
+
+	return 1;
+}
+
+/*
+ * Attach all the sub-devices we can find
+ */
+void
+uni_n_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct uni_n_softc *sc = (struct uni_n_softc *)self;
+	struct confargs *our_ca = aux;
+	struct confargs ca;
+	int node, child, namelen;
+	u_int reg[20];
+	int intr[6];
+	char name[32];
+
+	node = OF_finddevice("/uni-n");
+	sc->sc_node = node;
+	printf(" address 0x%08x\n",our_ca->ca_reg[0]);
+	
+	for (child = OF_child(node); child; child = OF_peer(child)) {
+		namelen = OF_getprop(child, "name", name, sizeof(name));
+		if (namelen < 0)
+			continue;
+		if (namelen >= sizeof(name))
+			continue;
+
+		name[namelen] = 0;
+		ca.ca_name = name;
+		ca.ca_node = child;
+
+		ca.ca_nreg  = OF_getprop(child, "reg", reg, sizeof(reg));
+		ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
+				sizeof(intr));
+		if (ca.ca_nintr == -1)
+			ca.ca_nintr = OF_getprop(child, "interrupts", intr,
+					sizeof(intr));
+
+		ca.ca_reg = reg;
+		ca.ca_intr = intr;
+
+		config_found(self, &ca, uni_n_print);
+	}
+}
+
+int
+uni_n_print(aux, uni_n)
+	void *aux;
+	const char *uni_n;
+{
+	struct confargs *ca = aux;
+	if (uni_n)
+		aprint_normal("%s at %s", ca->ca_name, uni_n);
+
+	if (ca->ca_nreg > 0)
+		aprint_normal(" address 0x%x", ca->ca_reg[0]);
+
+	return UNCONF;
+}