| /* | |
| * Machine specific NMI handling for generic. | |
| * Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp> | |
| */ | |
| #ifndef _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H | |
| #define _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H | |
| #include <asm/mc146818rtc.h> | |
| #define NMI_REASON_PORT 0x61 | |
| #define NMI_REASON_SERR 0x80 | |
| #define NMI_REASON_IOCHK 0x40 | |
| #define NMI_REASON_MASK (NMI_REASON_SERR | NMI_REASON_IOCHK) | |
| #define NMI_REASON_CLEAR_SERR 0x04 | |
| #define NMI_REASON_CLEAR_IOCHK 0x08 | |
| #define NMI_REASON_CLEAR_MASK 0x0f | |
| static inline unsigned char default_get_nmi_reason(void) | |
| { | |
| return inb(NMI_REASON_PORT); | |
| } | |
| static inline void reassert_nmi(void) | |
| { | |
| int old_reg = -1; | |
| if (do_i_have_lock_cmos()) | |
| old_reg = current_lock_cmos_reg(); | |
| else | |
| lock_cmos(0); /* register doesn't matter here */ | |
| outb(0x8f, 0x70); | |
| inb(0x71); /* dummy */ | |
| outb(0x0f, 0x70); | |
| inb(0x71); /* dummy */ | |
| if (old_reg >= 0) | |
| outb(old_reg, 0x70); | |
| else | |
| unlock_cmos(); | |
| } | |
| #endif /* _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H */ |