53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/******************************************************************************
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* nmi.h
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*
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* NMI callback registration and reason codes.
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*
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* Copyright (c) 2005, Keir Fraser <keir@xensource.com>
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*/
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#ifndef __XEN_PUBLIC_NMI_H__
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#define __XEN_PUBLIC_NMI_H__
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#include <xen/interface/xen.h>
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/*
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* NMI reason codes:
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* Currently these are x86-specific, stored in arch_shared_info.nmi_reason.
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*/
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/* I/O-check error reported via ISA port 0x61, bit 6. */
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#define _XEN_NMIREASON_io_error 0
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#define XEN_NMIREASON_io_error (1UL << _XEN_NMIREASON_io_error)
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/* PCI SERR reported via ISA port 0x61, bit 7. */
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#define _XEN_NMIREASON_pci_serr 1
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#define XEN_NMIREASON_pci_serr (1UL << _XEN_NMIREASON_pci_serr)
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/* Unknown hardware-generated NMI. */
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#define _XEN_NMIREASON_unknown 2
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#define XEN_NMIREASON_unknown (1UL << _XEN_NMIREASON_unknown)
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/*
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* long nmi_op(unsigned int cmd, void *arg)
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* NB. All ops return zero on success, else a negative error code.
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*/
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/*
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* Register NMI callback for this (calling) VCPU. Currently this only makes
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* sense for domain 0, vcpu 0. All other callers will be returned EINVAL.
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* arg == pointer to xennmi_callback structure.
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*/
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#define XENNMI_register_callback 0
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struct xennmi_callback {
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unsigned long handler_address;
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unsigned long pad;
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};
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DEFINE_GUEST_HANDLE_STRUCT(xennmi_callback);
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/*
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* Deregister NMI callback for this (calling) VCPU.
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* arg == NULL.
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*/
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#define XENNMI_unregister_callback 1
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#endif /* __XEN_PUBLIC_NMI_H__ */
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