Virtual bus for virtual devices on sun4v.

1 files changed, 94 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/vbus.c b/sys/arch/sparc64/dev/vbus.c
new file mode 100644
index 00000000000..7b3a6273753
--- /dev/null
+++ b/sys/arch/sparc64/dev/vbus.c
@@ -0,0 +1,94 @@
+/*	$OpenBSD: vbus.c,v 1.1 2008/03/08 19:18:27 kettenis Exp $	*/
+/*
+ * Copyright (c) 2008 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <machine/autoconf.h>
+#include <machine/openfirm.h>
+
+#include <sparc64/dev/vbusvar.h>
+
+#include <dev/clock_subr.h>
+extern todr_chip_handle_t todr_handle;
+
+int	vbus_match(struct device *, void *, void *);
+void	vbus_attach(struct device *, struct device *, void *);
+int	vbus_print(void *, const char *);
+
+struct cfattach vbus_ca = {
+	sizeof(struct device), vbus_match, vbus_attach
+};
+
+struct cfdriver vbus_cd = {
+	NULL, "vbus", DV_DULL
+};
+
+int
+vbus_match(struct device *parent, void *match, void *aux)
+{
+	struct mainbus_attach_args *ma = aux;
+
+	if (strcmp(ma->ma_name, "virtual-devices") == 0)
+		return (1);
+
+	return (0);
+}
+
+void
+vbus_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct mainbus_attach_args *ma = aux;
+	int node;
+
+	printf("\n");
+
+	for (node = OF_child(ma->ma_node); node; node = OF_peer(node)) {
+		struct vbus_attach_args va;
+		char buf[32];
+
+		bzero(&va, sizeof(va));
+		va.va_node = node;
+		if (OF_getprop(node, "name", buf, sizeof(buf)) <= 0)
+			continue;
+		va.va_name = buf;
+		getprop(node, "reg", sizeof(*va.va_reg),
+		    &va.va_nreg, (void **)&va.va_reg);
+		getprop(node, "interrupts", sizeof(*va.va_intr),
+		    &va.va_nintr, (void **)&va.va_intr);
+		config_found(self, &va, vbus_print);
+	}
+
+	if (todr_handle == NULL) {
+		struct vbus_attach_args va;
+
+		bzero(&va, sizeof(va));
+		va.va_name = "rtc";
+		config_found(self, &va, vbus_print);
+	}
+}
+
+int
+vbus_print(void *aux, const char *name)
+{
+	struct vbus_attach_args *va = aux;
+
+	if (name)
+		printf("\"%s\" at %s", va->va_name, name);
+	return (UNCONF);
+}