1 /****************************************************************************** 2 * nmi.h 3 * 4 * NMI callback registration and reason codes. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Copyright (c) 2005, Keir Fraser <keir@xensource.com> 25 */ 26 27 #ifndef __XEN_PUBLIC_NMI_H__ 28 #define __XEN_PUBLIC_NMI_H__ 29 30 #include "xen.h" 31 32 /* 33 * NMI reason codes: 34 * Currently these are x86-specific, stored in arch_shared_info.nmi_reason. 35 */ 36 /* I/O-check error reported via ISA port 0x61, bit 6. */ 37 #define _XEN_NMIREASON_io_error 0 38 #define XEN_NMIREASON_io_error (1UL << _XEN_NMIREASON_io_error) 39 /* PCI SERR reported via ISA port 0x61, bit 7. */ 40 #define _XEN_NMIREASON_pci_serr 1 41 #define XEN_NMIREASON_pci_serr (1UL << _XEN_NMIREASON_pci_serr) 42 #if __XEN_INTERFACE_VERSION__ < 0x00040300 /* legacy alias of the above */ 43 /* Parity error reported via ISA port 0x61, bit 7. */ 44 #define _XEN_NMIREASON_parity_error 1 45 #define XEN_NMIREASON_parity_error (1UL << _XEN_NMIREASON_parity_error) 46 #endif 47 /* Unknown hardware-generated NMI. */ 48 #define _XEN_NMIREASON_unknown 2 49 #define XEN_NMIREASON_unknown (1UL << _XEN_NMIREASON_unknown) 50 51 /* 52 * long nmi_op(unsigned int cmd, void *arg) 53 * NB. All ops return zero on success, else a negative error code. 54 */ 55 56 /* 57 * Register NMI callback for this (calling) VCPU. Currently this only makes 58 * sense for domain 0, vcpu 0. All other callers will be returned EINVAL. 59 * arg == pointer to xennmi_callback structure. 60 */ 61 #define XENNMI_register_callback 0 62 struct xennmi_callback { 63 unsigned long handler_address; 64 unsigned long pad; 65 }; 66 typedef struct xennmi_callback xennmi_callback_t; 67 DEFINE_XEN_GUEST_HANDLE(xennmi_callback_t); 68 69 /* 70 * Deregister NMI callback for this (calling) VCPU. 71 * arg == NULL. 72 */ 73 #define XENNMI_unregister_callback 1 74 75 #endif /* __XEN_PUBLIC_NMI_H__ */ 76 77 /* 78 * Local variables: 79 * mode: C 80 * c-file-style: "BSD" 81 * c-basic-offset: 4 82 * tab-width: 4 83 * indent-tabs-mode: nil 84 * End: 85 */ 86