1 /****************************************************************************** 2 * nmi.h 3 * 4 * NMI callback registration and reason codes. 5 * 6 * Copyright (c) 2005, Keir Fraser <keir@xensource.com> 7 */ 8 9 #ifndef __XEN_PUBLIC_NMI_H__ 10 #define __XEN_PUBLIC_NMI_H__ 11 12 #include <xen/interface/xen.h> 13 14 /* 15 * NMI reason codes: 16 * Currently these are x86-specific, stored in arch_shared_info.nmi_reason. 17 */ 18 /* I/O-check error reported via ISA port 0x61, bit 6. */ 19 #define _XEN_NMIREASON_io_error 0 20 #define XEN_NMIREASON_io_error (1UL << _XEN_NMIREASON_io_error) 21 /* PCI SERR reported via ISA port 0x61, bit 7. */ 22 #define _XEN_NMIREASON_pci_serr 1 23 #define XEN_NMIREASON_pci_serr (1UL << _XEN_NMIREASON_pci_serr) 24 /* Unknown hardware-generated NMI. */ 25 #define _XEN_NMIREASON_unknown 2 26 #define XEN_NMIREASON_unknown (1UL << _XEN_NMIREASON_unknown) 27 28 /* 29 * long nmi_op(unsigned int cmd, void *arg) 30 * NB. All ops return zero on success, else a negative error code. 31 */ 32 33 /* 34 * Register NMI callback for this (calling) VCPU. Currently this only makes 35 * sense for domain 0, vcpu 0. All other callers will be returned EINVAL. 36 * arg == pointer to xennmi_callback structure. 37 */ 38 #define XENNMI_register_callback 0 39 struct xennmi_callback { 40 unsigned long handler_address; 41 unsigned long pad; 42 }; 43 DEFINE_GUEST_HANDLE_STRUCT(xennmi_callback); 44 45 /* 46 * Deregister NMI callback for this (calling) VCPU. 47 * arg == NULL. 48 */ 49 #define XENNMI_unregister_callback 1 50 51 #endif /* __XEN_PUBLIC_NMI_H__ */ 52