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File: [Development] / linux-2.6-xfs / arch / i386 / kernel / cpu / mcheck / Attic / winchip.c (download)

Revision 1.5, Fri Oct 28 16:02:11 2005 UTC (11 years, 11 months ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.4: +0 -1 lines 

Merge up to 2.6.14
Merge of 2.6.x-xfs-melb:linux:24258a by kenmcd.

/*
 * 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/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 __devinit 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");
}