projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * IDT Winchip specific Machine Check Exception Reporting | |
| 87c6fe26 | 3 | * (C) Copyright 2002 Alan Cox <alan@lxorguk.ukuu.org.uk> |
| 1da177e4 LT |
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 | } |