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Diffstat (limited to 'arch/x86/include/asm/mach_traps.h')
-rw-r--r--arch/x86/include/asm/mach_traps.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mach_traps.h b/arch/x86/include/asm/mach_traps.h
new file mode 100644
index 000000000000..f7920601e472
--- /dev/null
+++ b/arch/x86/include/asm/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 */