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 "qapi/qmp/qerror.h" 26 #include "qemu/module.h" 27 #include "monitor/monitor.h" 28 29 struct do_nmi_s { 30 int cpu_index; 31 Error *err; 32 bool handled; 33 }; 34 35 static void nmi_children(Object *o, struct do_nmi_s *ns); 36 37 static int do_nmi(Object *o, void *opaque) 38 { 39 struct do_nmi_s *ns = opaque; 40 NMIState *n = (NMIState *) object_dynamic_cast(o, TYPE_NMI); 41 42 if (n) { 43 NMIClass *nc = NMI_GET_CLASS(n); 44 45 ns->handled = true; 46 nc->nmi_monitor_handler(n, ns->cpu_index, &ns->err); 47 if (ns->err) { 48 return -1; 49 } 50 } 51 nmi_children(o, ns); 52 53 return 0; 54 } 55 56 static void nmi_children(Object *o, struct do_nmi_s *ns) 57 { 58 object_child_foreach(o, do_nmi, ns); 59 } 60 61 void nmi_monitor_handle(int cpu_index, Error **errp) 62 { 63 struct do_nmi_s ns = { 64 .cpu_index = cpu_index, 65 .err = NULL, 66 .handled = false 67 }; 68 69 nmi_children(object_get_root(), &ns); 70 if (ns.handled) { 71 error_propagate(errp, ns.err); 72 } else { 73 error_setg(errp, QERR_UNSUPPORTED); 74 } 75 } 76 77 static const TypeInfo nmi_info = { 78 .name = TYPE_NMI, 79 .parent = TYPE_INTERFACE, 80 .class_size = sizeof(NMIClass), 81 }; 82 83 static void nmi_register_types(void) 84 { 85 type_register_static(&nmi_info); 86 } 87 88 type_init(nmi_register_types) 89