1 /* 2 * NMI monitor handler class and helpers. 3 * 4 * Copyright IBM Corp., 2014 5 * 6 * Author: Alexey Kardashevskiy <aik@ozlabs.ru> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, 11 * or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "hw/nmi.h" 24 #include "qapi/error.h" 25 #include "qemu/module.h" 26 #include "monitor/monitor.h" 27 28 struct do_nmi_s { 29 int cpu_index; 30 Error *err; 31 bool handled; 32 }; 33 34 static void nmi_children(Object *o, struct do_nmi_s *ns); 35 36 static int do_nmi(Object *o, void *opaque) 37 { 38 struct do_nmi_s *ns = opaque; 39 NMIState *n = (NMIState *) object_dynamic_cast(o, TYPE_NMI); 40 41 if (n) { 42 NMIClass *nc = NMI_GET_CLASS(n); 43 44 ns->handled = true; 45 nc->nmi_monitor_handler(n, ns->cpu_index, &ns->err); 46 if (ns->err) { 47 return -1; 48 } 49 } 50 nmi_children(o, ns); 51 52 return 0; 53 } 54 55 static void nmi_children(Object *o, struct do_nmi_s *ns) 56 { 57 object_child_foreach(o, do_nmi, ns); 58 } 59 60 void nmi_monitor_handle(int cpu_index, Error **errp) 61 { 62 struct do_nmi_s ns = { 63 .cpu_index = cpu_index, 64 .err = NULL, 65 .handled = false 66 }; 67 68 nmi_children(object_get_root(), &ns); 69 if (ns.handled) { 70 error_propagate(errp, ns.err); 71 } else { 72 error_setg(errp, "machine does not provide NMIs"); 73 } 74 } 75 76 static const TypeInfo nmi_info = { 77 .name = TYPE_NMI, 78 .parent = TYPE_INTERFACE, 79 .class_size = sizeof(NMIClass), 80 }; 81 82 static void nmi_register_types(void) 83 { 84 type_register_static(&nmi_info); 85 } 86 87 type_init(nmi_register_types) 88