svn commit: r222169 - in projects/pseries: conf powerpc/pseries
Nathan Whitehorn
nwhitehorn at FreeBSD.org
Sun May 22 02:18:18 UTC 2011
Author: nwhitehorn
Date: Sun May 22 02:18:18 2011
New Revision: 222169
URL: http://svn.freebsd.org/changeset/base/222169
Log:
Add a driver for simple RTAS services. This supports the RTAS time of day
clock interface, as well as power-off and reboot. Other potential features
that could be added here are RTAS LED annunciator support, NVRAM access,
etc.
Added:
projects/pseries/powerpc/pseries/rtas_dev.c
Modified:
projects/pseries/conf/files.powerpc
Modified: projects/pseries/conf/files.powerpc
==============================================================================
--- projects/pseries/conf/files.powerpc Sun May 22 02:13:55 2011 (r222168)
+++ projects/pseries/conf/files.powerpc Sun May 22 02:18:18 2011 (r222169)
@@ -211,7 +211,8 @@ powerpc/ps3/ps3-hvcall.S optional ps3 sc
powerpc/pseries/phyp-hvcall.S optional pseries powerpc64
powerpc/pseries/mmu_phyp.c optional pseries powerpc64
powerpc/pseries/platform_chrp.c optional pseries
-powerpc/pseries/rtas_pci.c optional pseries
+powerpc/pseries/rtas_dev.c optional pseries
+powerpc/pseries/rtas_pci.c optional pseries pci
powerpc/psim/iobus.c optional psim
powerpc/psim/ata_iobus.c optional ata psim
powerpc/psim/openpic_iobus.c optional psim
Added: projects/pseries/powerpc/pseries/rtas_dev.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ projects/pseries/powerpc/pseries/rtas_dev.c Sun May 22 02:18:18 2011 (r222169)
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 2011 Nathan Whitehorn
+ * 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: projects/pseries/powerpc/powermac/rtasdev.c 193156 2009-05-31 09:01:23Z nwhitehorn $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/clock.h>
+#include <sys/cpu.h>
+#include <sys/kernel.h>
+#include <sys/reboot.h>
+#include <sys/sysctl.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/openfirm.h>
+
+#include <machine/rtas.h>
+
+#include "clock_if.h"
+
+static int rtasdev_probe(device_t);
+static int rtasdev_attach(device_t);
+/* clock interface */
+static int rtas_gettime(device_t dev, struct timespec *ts);
+static int rtas_settime(device_t dev, struct timespec *ts);
+
+static void rtas_shutdown(void *arg, int howto);
+
+static device_method_t rtasdev_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, rtasdev_probe),
+ DEVMETHOD(device_attach, rtasdev_attach),
+
+ /* clock interface */
+ DEVMETHOD(clock_gettime, rtas_gettime),
+ DEVMETHOD(clock_settime, rtas_settime),
+
+ { 0, 0 },
+};
+
+static driver_t rtasdev_driver = {
+ "rtas",
+ rtasdev_methods,
+ 0
+};
+
+static devclass_t rtasdev_devclass;
+
+DRIVER_MODULE(rtasdev, nexus, rtasdev_driver, rtasdev_devclass, 0, 0);
+
+static int
+rtasdev_probe(device_t dev)
+{
+ const char *name = ofw_bus_get_name(dev);
+
+ if (strcmp(name, "rtas") != 0)
+ return (ENXIO);
+ if (!rtas_exists())
+ return (ENXIO);
+
+ device_set_desc(dev, "Run-Time Abstraction Services");
+ return (0);
+}
+
+static int
+rtasdev_attach(device_t dev)
+{
+ if (rtas_token_lookup("get-time-of-day") != -1)
+ clock_register(dev, 2000);
+
+ EVENTHANDLER_REGISTER(shutdown_final, rtas_shutdown, NULL,
+ SHUTDOWN_PRI_LAST);
+
+ return (0);
+}
+
+static int
+rtas_gettime(device_t dev, struct timespec *ts) {
+ struct clocktime ct;
+ cell_t tod[8];
+ cell_t token;
+ int error;
+
+ token = rtas_token_lookup("get-time-of-day");
+ if (token == -1)
+ return (ENXIO);
+ error = rtas_call_method(token, 0, 8, &tod[0], &tod[1], &tod[2],
+ &tod[3], &tod[4], &tod[5], &tod[6], &tod[7]);
+ if (error < 0)
+ return (ENXIO);
+ if (tod[0] != 0)
+ return ((tod[0] == -1) ? ENXIO : EAGAIN);
+
+ ct.year = tod[1];
+ ct.mon = tod[2];
+ ct.day = tod[3];
+ ct.hour = tod[4];
+ ct.min = tod[5];
+ ct.sec = tod[6];
+ ct.nsec = tod[7];
+
+ return (clock_ct_to_ts(&ct, ts));
+}
+
+static int
+rtas_settime(device_t dev, struct timespec *ts)
+{
+ struct clocktime ct;
+ cell_t token, status;
+ int error;
+
+ token = rtas_token_lookup("set-time-of-day");
+ if (token == -1)
+ return (ENXIO);
+
+ clock_ts_to_ct(ts, &ct);
+ error = rtas_call_method(token, 7, 1, ct.year, ct.mon, ct.day, ct.hour,
+ ct.min, ct.min, ct.sec, ct.nsec, &status);
+ if (error < 0)
+ return (ENXIO);
+ if (status != 0)
+ return (((int)status < 0) ? ENXIO : EAGAIN);
+
+ return (0);
+}
+
+static void
+rtas_shutdown(void *arg, int howto)
+{
+ cell_t token, status;
+
+ if (howto & RB_HALT) {
+ token = rtas_token_lookup("power-off");
+ if (token == -1)
+ return;
+
+ rtas_call_method(token, 2, 1, 0, 0, &status);
+ } else {
+ token = rtas_token_lookup("system-reboot");
+ if (token == -1)
+ return;
+
+ rtas_call_method(token, 0, 1, &status);
+ }
+}
+
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