Merge tag 'pull-loongarch-20241016' of https://gitlab.com/gaosong/qemu into staging
[qemu/armbru.git] / hw / intc / m68k_irqc.c
blobb4471e185a0fbe4c320534cff64ca43f95d91523
1 /*
2 * SPDX-License-Identifier: GPL-2.0-or-later
4 * QEMU Motorola 680x0 IRQ Controller
6 * (c) 2020 Laurent Vivier <laurent@vivier.eu>
8 */
10 #include "qemu/osdep.h"
11 #include "cpu.h"
12 #include "migration/vmstate.h"
13 #include "hw/qdev-properties.h"
14 #include "hw/nmi.h"
15 #include "hw/intc/intc.h"
16 #include "hw/intc/m68k_irqc.h"
19 static bool m68k_irqc_get_statistics(InterruptStatsProvider *obj,
20 uint64_t **irq_counts, unsigned int *nb_irqs)
22 M68KIRQCState *s = M68K_IRQC(obj);
24 *irq_counts = s->stats_irq_count;
25 *nb_irqs = ARRAY_SIZE(s->stats_irq_count);
26 return true;
29 static void m68k_irqc_print_info(InterruptStatsProvider *obj, GString *buf)
31 M68KIRQCState *s = M68K_IRQC(obj);
32 g_string_append_printf(buf, "m68k-irqc: ipr=0x%x\n", s->ipr);
35 static void m68k_set_irq(void *opaque, int irq, int level)
37 M68KIRQCState *s = opaque;
38 M68kCPU *cpu = M68K_CPU(s->cpu);
39 int i;
41 if (level) {
42 s->ipr |= 1 << irq;
43 s->stats_irq_count[irq]++;
44 } else {
45 s->ipr &= ~(1 << irq);
48 for (i = M68K_IRQC_LEVEL_7; i >= M68K_IRQC_LEVEL_1; i--) {
49 if ((s->ipr >> i) & 1) {
50 m68k_set_irq_level(cpu, i + 1, i + M68K_IRQC_AUTOVECTOR_BASE);
51 return;
54 m68k_set_irq_level(cpu, 0, 0);
57 static void m68k_irqc_reset(DeviceState *d)
59 M68KIRQCState *s = M68K_IRQC(d);
60 int i;
62 s->ipr = 0;
63 for (i = 0; i < ARRAY_SIZE(s->stats_irq_count); i++) {
64 s->stats_irq_count[i] = 0;
68 static void m68k_irqc_instance_init(Object *obj)
70 qdev_init_gpio_in(DEVICE(obj), m68k_set_irq, M68K_IRQC_LEVEL_NUM);
73 static void m68k_nmi(NMIState *n, int cpu_index, Error **errp)
75 m68k_set_irq(n, M68K_IRQC_LEVEL_7, 1);
78 static const VMStateDescription vmstate_m68k_irqc = {
79 .name = "m68k-irqc",
80 .version_id = 1,
81 .minimum_version_id = 1,
82 .fields = (const VMStateField[]) {
83 VMSTATE_UINT8(ipr, M68KIRQCState),
84 VMSTATE_END_OF_LIST()
88 static Property m68k_irqc_properties[] = {
89 DEFINE_PROP_LINK("m68k-cpu", M68KIRQCState, cpu,
90 TYPE_M68K_CPU, ArchCPU *),
91 DEFINE_PROP_END_OF_LIST(),
94 static void m68k_irqc_class_init(ObjectClass *oc, void *data)
96 DeviceClass *dc = DEVICE_CLASS(oc);
97 NMIClass *nc = NMI_CLASS(oc);
98 InterruptStatsProviderClass *ic = INTERRUPT_STATS_PROVIDER_CLASS(oc);
100 device_class_set_props(dc, m68k_irqc_properties);
101 nc->nmi_monitor_handler = m68k_nmi;
102 device_class_set_legacy_reset(dc, m68k_irqc_reset);
103 dc->vmsd = &vmstate_m68k_irqc;
104 ic->get_statistics = m68k_irqc_get_statistics;
105 ic->print_info = m68k_irqc_print_info;
108 static const TypeInfo m68k_irqc_type_info = {
109 .name = TYPE_M68K_IRQC,
110 .parent = TYPE_SYS_BUS_DEVICE,
111 .instance_size = sizeof(M68KIRQCState),
112 .instance_init = m68k_irqc_instance_init,
113 .class_init = m68k_irqc_class_init,
114 .interfaces = (InterfaceInfo[]) {
115 { TYPE_NMI },
116 { TYPE_INTERRUPT_STATS_PROVIDER },
121 static void q800_irq_register_types(void)
123 type_register_static(&m68k_irqc_type_info);
126 type_init(q800_irq_register_types);