| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /****************************************************************************** | |
| * 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 0 | |
| struct 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__ */ |