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-rw-r--r--arch/x86/mach-voyager/voyager_thread.c128
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 15464a20fb3..00000000000
--- 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
31struct task_struct *voyager_thread;
32static __u8 set_timeout;
33
34static 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
59static 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
74static 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
92static 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
111static 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
122static void __exit voyager_thread_stop(void)
123{
124 kthread_stop(voyager_thread);
125}
126
127module_init(voyager_thread_start);
128module_exit(voyager_thread_stop);