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-rw-r--r--qemu/hw/core/nmi.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/qemu/hw/core/nmi.c b/qemu/hw/core/nmi.c
new file mode 100644
index 000000000..de1d1f8cb
--- /dev/null
+++ b/qemu/hw/core/nmi.c
@@ -0,0 +1,104 @@
+/*
+ * NMI monitor handler class and helpers.
+ *
+ * Copyright IBM Corp., 2014
+ *
+ * Author: Alexey Kardashevskiy <aik@ozlabs.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hw/nmi.h"
+#include "qapi/qmp/qerror.h"
+#include "monitor/monitor.h"
+
+struct do_nmi_s {
+ int cpu_index;
+ Error *errp;
+ bool handled;
+};
+
+static void nmi_children(Object *o, struct do_nmi_s *ns);
+
+static int do_nmi(Object *o, void *opaque)
+{
+ struct do_nmi_s *ns = opaque;
+ NMIState *n = (NMIState *) object_dynamic_cast(o, TYPE_NMI);
+
+ if (n) {
+ NMIClass *nc = NMI_GET_CLASS(n);
+
+ ns->handled = true;
+ nc->nmi_monitor_handler(n, ns->cpu_index, &ns->errp);
+ if (ns->errp) {
+ return -1;
+ }
+ }
+ nmi_children(o, ns);
+
+ return 0;
+}
+
+static void nmi_children(Object *o, struct do_nmi_s *ns)
+{
+ object_child_foreach(o, do_nmi, ns);
+}
+
+void nmi_monitor_handle(int cpu_index, Error **errp)
+{
+ struct do_nmi_s ns = {
+ .cpu_index = cpu_index,
+ .errp = NULL,
+ .handled = false
+ };
+
+ nmi_children(object_get_root(), &ns);
+ if (ns.handled) {
+ error_propagate(errp, ns.errp);
+ } else {
+ error_setg(errp, QERR_UNSUPPORTED);
+ }
+}
+
+void inject_nmi(void)
+{
+#if defined(TARGET_I386)
+ CPUState *cs;
+
+ CPU_FOREACH(cs) {
+ X86CPU *cpu = X86_CPU(cs);
+
+ if (!cpu->apic_state) {
+ cpu_interrupt(cs, CPU_INTERRUPT_NMI);
+ } else {
+ apic_deliver_nmi(cpu->apic_state);
+ }
+ }
+#else
+ nmi_monitor_handle(0, NULL);
+#endif
+}
+
+static const TypeInfo nmi_info = {
+ .name = TYPE_NMI,
+ .parent = TYPE_INTERFACE,
+ .class_size = sizeof(NMIClass),
+};
+
+static void nmi_register_types(void)
+{
+ type_register_static(&nmi_info);
+}
+
+type_init(nmi_register_types)