| /* 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__ */ |