1c7b74d46f
Replace the NMI related magic numbers with symbol constants. Memory parity error is only valid for IBM PC-AT, newer machine use bit 7 (0x80) of 0x61 port for PCI SERR. While memory error is usually reported via MCE. So corresponding function name and kernel log string is changed. But on some machines, PCI SERR line is still used to report memory errors. This is used by EDAC, so corresponding EDAC call is reserved. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
44 lines
966 B
C
44 lines
966 B
C
/*
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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 _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H
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#define _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H
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#include <asm/mc146818rtc.h>
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#define NMI_REASON_PORT 0x61
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#define NMI_REASON_SERR 0x80
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#define NMI_REASON_IOCHK 0x40
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#define NMI_REASON_MASK (NMI_REASON_SERR | NMI_REASON_IOCHK)
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#define NMI_REASON_CLEAR_SERR 0x04
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#define NMI_REASON_CLEAR_IOCHK 0x08
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#define NMI_REASON_CLEAR_MASK 0x0f
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static inline unsigned char get_nmi_reason(void)
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{
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return inb(NMI_REASON_PORT);
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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 /* _ASM_X86_MACH_DEFAULT_MACH_TRAPS_H */
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