Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * IDT Winchip specific Machine Check Exception Reporting | |
3 | * (C) Copyright 2002 Alan Cox <alan@redhat.com> | |
4 | */ | |
5 | ||
6 | #include <linux/init.h> | |
7 | #include <linux/types.h> | |
8 | #include <linux/kernel.h> | |
1da177e4 LT |
9 | #include <linux/interrupt.h> |
10 | ||
4de81629 | 11 | #include <asm/processor.h> |
1da177e4 LT |
12 | #include <asm/system.h> |
13 | #include <asm/msr.h> | |
14 | ||
15 | #include "mce.h" | |
16 | ||
17 | /* Machine check handler for WinChip C6 */ | |
4de81629 | 18 | static void winchip_machine_check(struct pt_regs *regs, long error_code) |
1da177e4 LT |
19 | { |
20 | printk(KERN_EMERG "CPU0: Machine Check Exception.\n"); | |
21 | add_taint(TAINT_MACHINE_CHECK); | |
22 | } | |
23 | ||
24 | /* Set up machine check reporting on the Winchip C6 series */ | |
31ab269a | 25 | void winchip_mcheck_init(struct cpuinfo_x86 *c) |
1da177e4 LT |
26 | { |
27 | u32 lo, hi; | |
28 | machine_check_vector = winchip_machine_check; | |
29 | wmb(); | |
30 | rdmsr(MSR_IDT_FCR1, lo, hi); | |
4de81629 PC |
31 | lo |= (1<<2); /* Enable EIERRINT (int 18 MCE) */ |
32 | lo &= ~(1<<4); /* Enable MCE */ | |
1da177e4 LT |
33 | wrmsr(MSR_IDT_FCR1, lo, hi); |
34 | set_in_cr4(X86_CR4_MCE); | |
35 | printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n"); | |
36 | } |