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 */ 34