diff options
Diffstat (limited to 'arch/x86/include/asm/mach-default/mach_traps.h')
| -rw-r--r-- | arch/x86/include/asm/mach-default/mach_traps.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mach-default/mach_traps.h b/arch/x86/include/asm/mach-default/mach_traps.h new file mode 100644 index 000000000000..ff8778f26b84 --- /dev/null +++ b/arch/x86/include/asm/mach-default/mach_traps.h @@ -0,0 +1,33 @@ +/* + * 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> + +static inline unsigned char get_nmi_reason(void) +{ + return inb(0x61); +} + +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 */ |