svn commit: r203845 - in head/sys: conf sparc64/sparc64

[Marius Strobl]

Author: marius
Date: Sat Feb 13 19:05:34 2010
New Revision: 203845
URL: http://svn.freebsd.org/changeset/base/203845

Log:
  Add ssm(4), which serves as a glue device allowing devices beneath the
  scalable shared memory node, which is used in large UltraSPARC III based
  machines to group snooping-coherency domains together, like schizo(4) to
  be treated like nexus(4) children.

Added:
  head/sys/sparc64/sparc64/ssm.c   (contents, props changed)
Modified:
  head/sys/conf/files.sparc64

Modified: head/sys/conf/files.sparc64
==============================================================================
--- head/sys/conf/files.sparc64	Sat Feb 13 18:51:49 2010	(r203844)
+++ head/sys/conf/files.sparc64	Sat Feb 13 19:05:34 2010	(r203845)
@@ -124,6 +124,7 @@ sparc64/sparc64/rwindow.c	standard
 sparc64/sparc64/sc_machdep.c	optional	sc
 sparc64/sparc64/schppm.c	standard
 sparc64/sparc64/spitfire.c	standard
+sparc64/sparc64/ssm.c		standard
 sparc64/sparc64/stack_machdep.c	optional	ddb | stack
 sparc64/sparc64/support.S	standard				\
 	compile-with "${NORMAL_S} -mcpu=ultrasparc"

Added: head/sys/sparc64/sparc64/ssm.c
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/sys/sparc64/sparc64/ssm.c	Sat Feb 13 19:05:34 2010	(r203845)
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 2010 Marius Strobl <marius at FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Glue allowing devices beneath the scalable shared memory node to be
+ * treated like nexus(4) children
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+
+#include <dev/ofw/ofw_bus.h>
+
+#include <machine/nexusvar.h>
+
+static device_probe_t ssm_probe;
+
+static device_method_t ssm_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		ssm_probe),
+
+	/* Bus interface */
+
+	/* ofw_bus interface */
+
+	KOBJMETHOD_END
+};
+
+static devclass_t ssm_devclass;
+
+DEFINE_CLASS_1(ssm, ssm_driver, ssm_methods, 1 /* no softc */, nexus_driver);
+EARLY_DRIVER_MODULE(ssm, nexus, ssm_driver, ssm_devclass, 0, 0, BUS_PASS_BUS);
+MODULE_DEPEND(ssm, nexus, 1, 1, 1);
+MODULE_VERSION(ssm, 1);
+
+static int
+ssm_probe(device_t dev)
+{
+
+	if (strcmp(ofw_bus_get_name(dev), "ssm") == 0) {
+		device_set_desc(dev, "Scalable Shared Memory");
+		return (BUS_PROBE_DEFAULT);
+	}
+	return (ENXIO);
+}