1 /*

     2  *  Machine specific NMI handling for generic.

     3  *  Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp>

     4  */

     5 #ifndef _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H

     6 #define _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H

     7 

     8 #include <asm/mc146818rtc.h>

     9 

    10 static inline unsigned char get_nmi_reason(void)

    11 {

    12 	return inb(0x61);

    13 }

    14 

    15 static inline void reassert_nmi(void)

    16 {

    17 	int old_reg = -1;

    18 

    19 	if (do_i_have_lock_cmos())

    20 		old_reg = current_lock_cmos_reg();

    21 	else

    22 		lock_cmos(0); /* register doesn't matter here */

    23 	outb(0x8f, 0x70);

    24 	inb(0x71);		/* dummy */

    25 	outb(0x0f, 0x70);

    26 	inb(0x71);		/* dummy */

    27 	if (old_reg >= 0)

    28 		outb(old_reg, 0x70);

    29 	else

    30 		unlock_cmos();

    31 }

    32 

    33 #endif /* _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H */