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 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 | |||
| 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); | ||
