40 lines
745 B
C
40 lines
745 B
C
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/*
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* Machine specific NMI handling for generic.
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* Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp>
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*/
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#ifndef _MACH_TRAPS_H
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#define _MACH_TRAPS_H
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#include <asm/mc146818rtc.h>
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static inline void clear_mem_error(unsigned char reason)
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{
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reason = (reason & 0xf) | 4;
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outb(reason, 0x61);
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}
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static inline unsigned char get_nmi_reason(void)
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{
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return inb(0x61);
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}
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static inline void reassert_nmi(void)
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{
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int old_reg = -1;
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if (do_i_have_lock_cmos())
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old_reg = current_lock_cmos_reg();
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else
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lock_cmos(0); /* register doesn't matter here */
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outb(0x8f, 0x70);
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inb(0x71); /* dummy */
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outb(0x0f, 0x70);
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inb(0x71); /* dummy */
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if (old_reg >= 0)
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outb(old_reg, 0x70);
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else
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unlock_cmos();
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}
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#endif /* !_MACH_TRAPS_H */
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