| /* |
| * IDT Winchip specific Machine Check Exception Reporting |
| * (C) Copyright 2002 Alan Cox <alan@redhat.com> |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/kernel.h> |
| #include <linux/irq.h> |
| #include <linux/interrupt.h> |
| |
| #include <asm/processor.h> |
| #include <asm/system.h> |
| #include <asm/msr.h> |
| |
| #include "mce.h" |
| |
| /* Machine check handler for WinChip C6 */ |
| static fastcall void winchip_machine_check(struct pt_regs * regs, long error_code) |
| { |
| printk(KERN_EMERG "CPU0: Machine Check Exception.\n"); |
| add_taint(TAINT_MACHINE_CHECK); |
| } |
| |
| /* Set up machine check reporting on the Winchip C6 series */ |
| void __init winchip_mcheck_init(struct cpuinfo_x86 *c) |
| { |
| u32 lo, hi; |
| machine_check_vector = winchip_machine_check; |
| wmb(); |
| rdmsr(MSR_IDT_FCR1, lo, hi); |
| lo|= (1<<2); /* Enable EIERRINT (int 18 MCE) */ |
| lo&= ~(1<<4); /* Enable MCE */ |
| wrmsr(MSR_IDT_FCR1, lo, hi); |
| set_in_cr4(X86_CR4_MCE); |
| printk(KERN_INFO "Winchip machine check reporting enabled on CPU#0.\n"); |
| } |
