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9cb805fd AK |
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 | ||
18c86e2b | 22 | #include "qemu/osdep.h" |
33c11879 | 23 | #include "qom/cpu.h" |
9cb805fd | 24 | #include "hw/nmi.h" |
da34e65c | 25 | #include "qapi/error.h" |
9cb805fd | 26 | #include "qapi/qmp/qerror.h" |
f9a535e0 | 27 | #include "monitor/monitor.h" |
9cb805fd | 28 | |
33c11879 PB |
29 | #if defined(TARGET_I386) |
30 | #include "cpu.h" | |
31 | #endif | |
32 | ||
9cb805fd AK |
33 | struct do_nmi_s { |
34 | int cpu_index; | |
533fdaed | 35 | Error *err; |
9cb805fd AK |
36 | bool handled; |
37 | }; | |
38 | ||
39 | static void nmi_children(Object *o, struct do_nmi_s *ns); | |
40 | ||
41 | static int do_nmi(Object *o, void *opaque) | |
42 | { | |
43 | struct do_nmi_s *ns = opaque; | |
44 | NMIState *n = (NMIState *) object_dynamic_cast(o, TYPE_NMI); | |
45 | ||
46 | if (n) { | |
47 | NMIClass *nc = NMI_GET_CLASS(n); | |
48 | ||
49 | ns->handled = true; | |
533fdaed MA |
50 | nc->nmi_monitor_handler(n, ns->cpu_index, &ns->err); |
51 | if (ns->err) { | |
9cb805fd AK |
52 | return -1; |
53 | } | |
54 | } | |
55 | nmi_children(o, ns); | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | static void nmi_children(Object *o, struct do_nmi_s *ns) | |
61 | { | |
62 | object_child_foreach(o, do_nmi, ns); | |
63 | } | |
64 | ||
65 | void nmi_monitor_handle(int cpu_index, Error **errp) | |
66 | { | |
67 | struct do_nmi_s ns = { | |
68 | .cpu_index = cpu_index, | |
533fdaed | 69 | .err = NULL, |
9cb805fd AK |
70 | .handled = false |
71 | }; | |
72 | ||
73 | nmi_children(object_get_root(), &ns); | |
74 | if (ns.handled) { | |
533fdaed | 75 | error_propagate(errp, ns.err); |
9cb805fd | 76 | } else { |
c6bd8c70 | 77 | error_setg(errp, QERR_UNSUPPORTED); |
9cb805fd AK |
78 | } |
79 | } | |
80 | ||
f9a535e0 XW |
81 | void inject_nmi(void) |
82 | { | |
83 | #if defined(TARGET_I386) | |
84 | CPUState *cs; | |
85 | ||
86 | CPU_FOREACH(cs) { | |
87 | X86CPU *cpu = X86_CPU(cs); | |
88 | ||
89 | if (!cpu->apic_state) { | |
90 | cpu_interrupt(cs, CPU_INTERRUPT_NMI); | |
91 | } else { | |
92 | apic_deliver_nmi(cpu->apic_state); | |
93 | } | |
94 | } | |
95 | #else | |
96 | nmi_monitor_handle(0, NULL); | |
97 | #endif | |
98 | } | |
99 | ||
9cb805fd AK |
100 | static const TypeInfo nmi_info = { |
101 | .name = TYPE_NMI, | |
102 | .parent = TYPE_INTERFACE, | |
103 | .class_size = sizeof(NMIClass), | |
104 | }; | |
105 | ||
106 | static void nmi_register_types(void) | |
107 | { | |
108 | type_register_static(&nmi_info); | |
109 | } | |
110 | ||
111 | type_init(nmi_register_types) |