1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Reset an IP27.
7 *
8 * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle
9 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
10 */
11#include <linux/kernel.h>
12#include <linux/sched.h>
13#include <linux/timer.h>
14#include <linux/smp.h>
15#include <linux/mmzone.h>
16#include <linux/nodemask.h>
17#include <linux/pm.h>
18
19#include <asm/io.h>
20#include <asm/irq.h>
21#include <asm/reboot.h>
22#include <asm/system.h>
23#include <asm/sgialib.h>
24#include <asm/sn/addrs.h>
25#include <asm/sn/arch.h>
26#include <asm/sn/gda.h>
27#include <asm/sn/sn0/hub.h>
28
29void machine_restart(char *command) __attribute__((noreturn));
30void machine_halt(void) __attribute__((noreturn));
31void machine_power_off(void) __attribute__((noreturn));
32
33#define noreturn while(1);				/* Silence gcc.  */
34
35static void ip27_machine_restart(char *command)
36{
37
38	printk("Reboot started from CPU %d\n", smp_processor_id());
39#ifdef CONFIG_SMP
40	smp_send_stop();
41#endif
42	LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
43	noreturn;
44}
45
46static void ip27_machine_halt(void)
47{
48	int i;
49
50#ifdef CONFIG_SMP
51	smp_send_stop();
52#endif
53	for_each_online_node(i)
54		REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG,
55							PROMOP_RESTART);
56	LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
57	noreturn;
58}
59
60static void ip27_machine_power_off(void)
61{
62	/* To do ...  */
63	noreturn;
64}
65
66void ip27_reboot_setup(void)
67{
68	_machine_restart = ip27_machine_restart;
69	_machine_halt = ip27_machine_halt;
70	pm_power_off = ip27_machine_power_off;
71}
72