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authorMichael Ellerman <michael@ellerman.id.au>2006-12-05 17:52:36 +1100
committerPaul Mackerras <paulus@samba.org>2006-12-08 15:55:54 +1100
commit0332c2d447a7a20a4d744ba3814a349d0c1c6405 (patch)
tree5929c942c011f8a978788a9dd1d02c265cd06148 /arch/powerpc/platforms/pseries/hotplug-cpu.c
parenta081e126e12f78651499ba0f9944a7df1e9b06b6 (diff)
downloadlinaro-lsk-0332c2d447a7a20a4d744ba3814a349d0c1c6405.tar.gz
[POWERPC] Move rtas_stop_self() into platforms/pseries/hotplug-cpu.c
As the first step in consolidating the pseries hotplug cpu code, create platforms/pseries/hotplug-cpu.c and move rtas_stop_self() into it. Do the rtas token initialisation in a new initcall, rather than rtas_initialize(). Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/hotplug-cpu.c')
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
new file mode 100644
index 00000000000..6e21ebdfcef
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -0,0 +1,58 @@
+/*
+ * pseries CPU Hotplug infrastructure.
+ *
+ * Split out from arch/powerpc/kernel/rtas.c
+ *
+ * Peter Bergner, IBM March 2001.
+ * Copyright (C) 2001 IBM.
+ *
+ * Copyright (C) 2006 Michael Ellerman, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/cpu.h>
+#include <asm/system.h>
+#include <asm/prom.h>
+#include <asm/rtas.h>
+#include <asm/firmware.h>
+#include <asm/machdep.h>
+#include <asm/vdso_datapage.h>
+#include <asm/pSeries_reconfig.h>
+#include "xics.h"
+
+/* This version can't take the spinlock, because it never returns */
+static struct rtas_args rtas_stop_self_args = {
+ .token = RTAS_UNKNOWN_SERVICE,
+ .nargs = 0,
+ .nret = 1,
+ .rets = &rtas_stop_self_args.args[0],
+};
+
+void rtas_stop_self(void)
+{
+ struct rtas_args *args = &rtas_stop_self_args;
+
+ local_irq_disable();
+
+ BUG_ON(args->token == RTAS_UNKNOWN_SERVICE);
+
+ printk("cpu %u (hwid %u) Ready to die...\n",
+ smp_processor_id(), hard_smp_processor_id());
+ enter_rtas(__pa(args));
+
+ panic("Alas, I survived.\n");
+}
+
+static int __init pseries_cpu_hotplug_init(void)
+{
+ rtas_stop_self_args.token = rtas_token("stop-self");
+
+ return 0;
+}
+arch_initcall(pseries_cpu_hotplug_init);