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