diff options
Diffstat (limited to 'arch/x86/mach-voyager/voyager_thread.c')
-rw-r--r-- | arch/x86/mach-voyager/voyager_thread.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/arch/x86/mach-voyager/voyager_thread.c b/arch/x86/mach-voyager/voyager_thread.c deleted file mode 100644 index 15464a20fb38..000000000000 --- a/arch/x86/mach-voyager/voyager_thread.c +++ /dev/null | |||
@@ -1,128 +0,0 @@ | |||
1 | /* -*- mode: c; c-basic-offset: 8 -*- */ | ||
2 | |||
3 | /* Copyright (C) 2001 | ||
4 | * | ||
5 | * Author: J.E.J.Bottomley@HansenPartnership.com | ||
6 | * | ||
7 | * This module provides the machine status monitor thread for the | ||
8 | * voyager architecture. This allows us to monitor the machine | ||
9 | * environment (temp, voltage, fan function) and the front panel and | ||
10 | * internal UPS. If a fault is detected, this thread takes corrective | ||
11 | * action (usually just informing init) | ||
12 | * */ | ||
13 | |||
14 | #include <linux/module.h> | ||
15 | #include <linux/mm.h> | ||
16 | #include <linux/kernel_stat.h> | ||
17 | #include <linux/delay.h> | ||
18 | #include <linux/mc146818rtc.h> | ||
19 | #include <linux/init.h> | ||
20 | #include <linux/bootmem.h> | ||
21 | #include <linux/kmod.h> | ||
22 | #include <linux/completion.h> | ||
23 | #include <linux/sched.h> | ||
24 | #include <linux/kthread.h> | ||
25 | #include <asm/desc.h> | ||
26 | #include <asm/voyager.h> | ||
27 | #include <asm/vic.h> | ||
28 | #include <asm/mtrr.h> | ||
29 | #include <asm/msr.h> | ||
30 | |||
31 | struct task_struct *voyager_thread; | ||
32 | static __u8 set_timeout; | ||
33 | |||
34 | static int execute(const char *string) | ||
35 | { | ||
36 | int ret; | ||
37 | |||
38 | char *envp[] = { | ||
39 | "HOME=/", | ||
40 | "TERM=linux", | ||
41 | "PATH=/sbin:/usr/sbin:/bin:/usr/bin", | ||
42 | NULL, | ||
43 | }; | ||
44 | char *argv[] = { | ||
45 | "/bin/bash", | ||
46 | "-c", | ||
47 | (char *)string, | ||
48 | NULL, | ||
49 | }; | ||
50 | |||
51 | if ((ret = | ||
52 | call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC)) != 0) { | ||
53 | printk(KERN_ERR "Voyager failed to run \"%s\": %i\n", string, | ||
54 | ret); | ||
55 | } | ||
56 | return ret; | ||
57 | } | ||
58 | |||
59 | static void check_from_kernel(void) | ||
60 | { | ||
61 | if (voyager_status.switch_off) { | ||
62 | |||
63 | /* FIXME: This should be configurable via proc */ | ||
64 | execute("umask 600; echo 0 > /etc/initrunlvl; kill -HUP 1"); | ||
65 | } else if (voyager_status.power_fail) { | ||
66 | VDEBUG(("Voyager daemon detected AC power failure\n")); | ||
67 | |||
68 | /* FIXME: This should be configureable via proc */ | ||
69 | execute("umask 600; echo F > /etc/powerstatus; kill -PWR 1"); | ||
70 | set_timeout = 1; | ||
71 | } | ||
72 | } | ||
73 | |||
74 | static void check_continuing_condition(void) | ||
75 | { | ||
76 | if (voyager_status.power_fail) { | ||
77 | __u8 data; | ||
78 | voyager_cat_psi(VOYAGER_PSI_SUBREAD, | ||
79 | VOYAGER_PSI_AC_FAIL_REG, &data); | ||
80 | if ((data & 0x1f) == 0) { | ||
81 | /* all power restored */ | ||
82 | printk(KERN_NOTICE | ||
83 | "VOYAGER AC power restored, cancelling shutdown\n"); | ||
84 | /* FIXME: should be user configureable */ | ||
85 | execute | ||
86 | ("umask 600; echo O > /etc/powerstatus; kill -PWR 1"); | ||
87 | set_timeout = 0; | ||
88 | } | ||
89 | } | ||
90 | } | ||
91 | |||
92 | static int thread(void *unused) | ||
93 | { | ||
94 | printk(KERN_NOTICE "Voyager starting monitor thread\n"); | ||
95 | |||
96 | for (;;) { | ||
97 | set_current_state(TASK_INTERRUPTIBLE); | ||
98 | schedule_timeout(set_timeout ? HZ : MAX_SCHEDULE_TIMEOUT); | ||
99 | |||
100 | VDEBUG(("Voyager Daemon awoken\n")); | ||
101 | if (voyager_status.request_from_kernel == 0) { | ||
102 | /* probably awoken from timeout */ | ||
103 | check_continuing_condition(); | ||
104 | } else { | ||
105 | check_from_kernel(); | ||
106 | voyager_status.request_from_kernel = 0; | ||
107 | } | ||
108 | } | ||
109 | } | ||
110 | |||
111 | static int __init voyager_thread_start(void) | ||
112 | { | ||
113 | voyager_thread = kthread_run(thread, NULL, "kvoyagerd"); | ||
114 | if (IS_ERR(voyager_thread)) { | ||
115 | printk(KERN_ERR | ||
116 | "Voyager: Failed to create system monitor thread.\n"); | ||
117 | return PTR_ERR(voyager_thread); | ||
118 | } | ||
119 | return 0; | ||
120 | } | ||
121 | |||
122 | static void __exit voyager_thread_stop(void) | ||
123 | { | ||
124 | kthread_stop(voyager_thread); | ||
125 | } | ||
126 | |||
127 | module_init(voyager_thread_start); | ||
128 | module_exit(voyager_thread_stop); | ||