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1da177e4 LT |
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 | * | |
fcdb27ad | 8 | * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle |
1da177e4 LT |
9 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
10 | */ | |
1da177e4 LT |
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> | |
fcdb27ad | 17 | #include <linux/pm.h> |
1da177e4 LT |
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 | ||
29 | void machine_restart(char *command) __attribute__((noreturn)); | |
30 | void machine_halt(void) __attribute__((noreturn)); | |
31 | void machine_power_off(void) __attribute__((noreturn)); | |
32 | ||
33 | #define noreturn while(1); /* Silence gcc. */ | |
34 | ||
35 | /* XXX How to pass the reboot command to the firmware??? */ | |
36 | static void ip27_machine_restart(char *command) | |
37 | { | |
38 | #if 0 | |
39 | int i; | |
40 | #endif | |
41 | ||
42 | printk("Reboot started from CPU %d\n", smp_processor_id()); | |
43 | #ifdef CONFIG_SMP | |
44 | smp_send_stop(); | |
45 | #endif | |
46 | #if 0 | |
47 | for_each_online_node(i) | |
48 | REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, | |
49 | PROMOP_REBOOT); | |
50 | #else | |
51 | LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); | |
52 | #endif | |
53 | noreturn; | |
54 | } | |
55 | ||
56 | static void ip27_machine_halt(void) | |
57 | { | |
58 | int i; | |
59 | ||
60 | #ifdef CONFIG_SMP | |
61 | smp_send_stop(); | |
62 | #endif | |
63 | for_each_online_node(i) | |
64 | REMOTE_HUB_S(COMPACT_TO_NASID_NODEID(i), PROMOP_REG, | |
65 | PROMOP_RESTART); | |
66 | LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); | |
67 | noreturn; | |
68 | } | |
69 | ||
70 | static void ip27_machine_power_off(void) | |
71 | { | |
72 | /* To do ... */ | |
73 | noreturn; | |
74 | } | |
75 | ||
76 | void ip27_reboot_setup(void) | |
77 | { | |
78 | _machine_restart = ip27_machine_restart; | |
79 | _machine_halt = ip27_machine_halt; | |
fcdb27ad | 80 | pm_power_off = ip27_machine_power_off; |
1da177e4 | 81 | } |