| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Machine specific NMI handling for generic. |
| 3 | * Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp> |
| 4 | */ |
| 5 | #ifndef _MACH_TRAPS_H |
| 6 | #define _MACH_TRAPS_H |
| 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 | |
| 39 | #endif /* !_MACH_TRAPS_H */ |