From 9cb805fd2674f474d058fee6d7aa9e83fcd3d336 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Wed, 20 Aug 2014 22:16:33 +1000 Subject: cpus: Define callback for QEMU "nmi" command This introduces an NMI (Non Maskable Interrupt) interface with a single nmi_monitor_handler() method. A machine or a device can implement it. This searches for an QOM object with this interface and if it is implemented, calls it. The callback implements an action required to cause debug crash dump on in-kernel debugger invocation. The callback returns Error**. This adds a nmi_monitor_handle() helper which walks through all objects to find the interface. The interface method is called for all found instances. This adds support for it in qmp_inject_nmi(). Since no architecture supports it at the moment, there is no change in behaviour. This changes inject-nmi command description for HMP and QMP. Signed-off-by: Alexey Kardashevskiy Reviewed-by: Alexander Graf Signed-off-by: Paolo Bonzini --- include/hw/nmi.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 include/hw/nmi.h (limited to 'include') diff --git a/include/hw/nmi.h b/include/hw/nmi.h new file mode 100644 index 0000000000..b541772e1d --- /dev/null +++ b/include/hw/nmi.h @@ -0,0 +1,49 @@ +/* + * NMI monitor handler class and helpers definitions. + * + * Copyright IBM Corp., 2014 + * + * Author: Alexey Kardashevskiy + * + * 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 . + */ + +#ifndef NMI_H +#define NMI_H 1 + +#include "qemu-common.h" +#include "qom/object.h" + +#define TYPE_NMI "nmi" + +#define NMI_CLASS(klass) \ + OBJECT_CLASS_CHECK(NMIClass, (klass), TYPE_NMI) +#define NMI_GET_CLASS(obj) \ + OBJECT_GET_CLASS(NMIClass, (obj), TYPE_NMI) +#define NMI(obj) \ + INTERFACE_CHECK(NMI, (obj), TYPE_NMI) + +typedef struct NMIState { + Object parent_obj; +} NMIState; + +typedef struct NMIClass { + InterfaceClass parent_class; + + void (*nmi_monitor_handler)(NMIState *n, int cpu_index, Error **errp); +} NMIClass; + +void nmi_monitor_handle(int cpu_index, Error **errp); + +#endif /* NMI_H */ -- cgit v1.2.3-55-g7522