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/compiler.h> |
12 | #include <linux/kernel.h> |
13 | #include <linux/sched.h> |
14 | #include <linux/timer.h> |
15 | #include <linux/smp.h> |
16 | #include <linux/mmzone.h> |
17 | #include <linux/nodemask.h> |
18 | #include <linux/pm.h> |
19 | |
20 | #include <asm/io.h> |
21 | #include <asm/irq.h> |
22 | #include <asm/reboot.h> |
23 | #include <asm/sgialib.h> |
24 | #include <asm/sn/addrs.h> |
25 | #include <asm/sn/agent.h> |
26 | #include <asm/sn/arch.h> |
27 | #include <asm/sn/gda.h> |
28 | |
29 | #include "ip27-common.h" |
30 | |
31 | void machine_restart(char *command) __noreturn; |
32 | void machine_halt(void) __noreturn; |
33 | void machine_power_off(void) __noreturn; |
34 | |
35 | #define noreturn while(1); /* Silence gcc. */ |
36 | |
37 | /* XXX How to pass the reboot command to the firmware??? */ |
38 | static void ip27_machine_restart(char *command) |
39 | { |
40 | #if 0 |
41 | int i; |
42 | #endif |
43 | |
44 | printk("Reboot started from CPU %d\n" , smp_processor_id()); |
45 | #ifdef CONFIG_SMP |
46 | smp_send_stop(); |
47 | #endif |
48 | #if 0 |
49 | for_each_online_node(i) |
50 | REMOTE_HUB_S(i, PROMOP_REG, PROMOP_REBOOT); |
51 | #else |
52 | LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET); |
53 | #endif |
54 | noreturn; |
55 | } |
56 | |
57 | static void ip27_machine_halt(void) |
58 | { |
59 | int i; |
60 | |
61 | #ifdef CONFIG_SMP |
62 | smp_send_stop(); |
63 | #endif |
64 | for_each_online_node(i) |
65 | REMOTE_HUB_S(i, PROMOP_REG, 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; |
80 | pm_power_off = ip27_machine_power_off; |
81 | } |
82 | |