projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 1da177e4 LT |
2 | * Machine specific NMI handling for generic. |
| 3 | * Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp> | |
| 4 | */ | |
| 77ef50a5 VN |
5 | #ifndef ASM_X86__MACH_DEFAULT__MACH_TRAPS_H |
| 6 | #define ASM_X86__MACH_DEFAULT__MACH_TRAPS_H | |
| 1da177e4 LT |
7 | |
| 8 | #include <asm/mc146818rtc.h> | |
| 9 | ||
| 10 | static inline void clear_mem_error(unsigned char reason) | |
| 11 | { | |
| 12 | reason = (reason & 0xf) | 4; | |
| 13 | outb(reason, 0x61); | |
| 14 | } | |
| 15 | ||
| 16 | static inline unsigned char get_nmi_reason(void) | |
| 17 | { | |
| 18 | return inb(0x61); | |
| 19 | } | |
| 20 | ||
| 21 | static inline void reassert_nmi(void) | |
| 22 | { | |
| 23 | int old_reg = -1; | |
| 24 | ||
| 25 | if (do_i_have_lock_cmos()) | |
| 26 | old_reg = current_lock_cmos_reg(); | |
| 27 | else | |
| 28 | lock_cmos(0); /* register doesn't matter here */ | |
| 29 | outb(0x8f, 0x70); | |
| 30 | inb(0x71); /* dummy */ | |
| 31 | outb(0x0f, 0x70); | |
| 32 | inb(0x71); /* dummy */ | |
| 33 | if (old_reg >= 0) | |
| 34 | outb(old_reg, 0x70); | |
| 35 | else | |
| 36 | unlock_cmos(); | |
| 37 | } | |
| 38 | ||
| 77ef50a5 | 39 | #endif /* ASM_X86__MACH_DEFAULT__MACH_TRAPS_H */ |