qemu

FORK: QEMU emulator
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nmi.c (2169B)

      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)