1 files changed, 81 insertions, 0 deletions

diff --git a/arch/mips/sgi-ip27/ip27-reset.c b/arch/mips/sgi-ip27/ip27-reset.c
new file mode 100644
index 000000000000..2e16be94c78b
--- /dev/null
+++ b/arch/mips/sgi-ip27/ip27-reset.c
@@ -0,0 +1,81 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Reset an IP27.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2000 by Ralf Baechle
+ * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/smp.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+#include <asm/sgialib.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/arch.h>
+#include <asm/sn/gda.h>
+#include <asm/sn/sn0/hub.h>
+
+void machine_restart(char *command) __attribute__((noreturn));
+void machine_halt(void) __attribute__((noreturn));
+void machine_power_off(void) __attribute__((noreturn));
+
+#define noreturn while(1);                              /* Silence gcc.  */
+
+/* XXX How to pass the reboot command to the firmware??? */
+static void ip27_machine_restart(char *command)
+{
+#if 0
+        int i;
+#endif
+
+        printk("Reboot started from CPU %d\n", smp_processor_id());
+#ifdef CONFIG_SMP
+        smp_send_stop();
+#endif
+#if 0
+        for_each_online_node(i)
+                REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG,
+                                                        PROMOP_REBOOT);
+#else
+        LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
+#endif
+        noreturn;
+}
+
+static void ip27_machine_halt(void)
+{
+        int i;
+
+#ifdef CONFIG_SMP
+        smp_send_stop();
+#endif
+        for_each_online_node(i)
+                REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG,
+                                                        PROMOP_RESTART);
+        LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
+        noreturn;
+}
+
+static void ip27_machine_power_off(void)
+{
+        /* To do ...  */
+        noreturn;
+}
+
+void ip27_reboot_setup(void)
+{
+        _machine_restart = ip27_machine_restart;
+        _machine_halt = ip27_machine_halt;
+        _machine_power_off = ip27_machine_power_off;
+}