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hw/intc/loongarch_pch: Add reset support

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Add reset support with LoongArch pci irqchip, and register reset
callback support with new API resettable_class_set_parent_phases().
Clear internal HW registers and SW state when virt machine resets.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao 2025-03-07 11:57:31 +08:00
parent bba709ff69
commit 5101435e6d
2 changed files with 26 additions and 0 deletions
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25
hw/intc/loongarch_pic_common.c
View file

@ -44,6 +44,27 @@ static void loongarch_pic_common_realize(DeviceState *dev, Error **errp)
}
}
static void loongarch_pic_common_reset_hold(Object *obj, ResetType type)
{
LoongArchPICCommonState *s = LOONGARCH_PIC_COMMON(obj);
int i;
s->int_mask = UINT64_MAX;
s->htmsi_en = 0x0;
s->intedge = 0x0;
s->intclr = 0x0;
s->auto_crtl0 = 0x0;
s->auto_crtl1 = 0x0;
for (i = 0; i < 64; i++) {
s->route_entry[i] = 0x1;
s->htmsi_vector[i] = 0x0;
}
s->intirr = 0x0;
s->intisr = 0x0;
s->last_intirr = 0x0;
s->int_polarity = 0x0;
}
static const Property loongarch_pic_common_properties[] = {
DEFINE_PROP_UINT32("pch_pic_irq_num", LoongArchPICCommonState, irq_num, 0),
};
@ -76,9 +97,13 @@ static void loongarch_pic_common_class_init(ObjectClass *klass,
{
DeviceClass *dc = DEVICE_CLASS(klass);
LoongArchPICCommonClass *lpcc = LOONGARCH_PIC_COMMON_CLASS(klass);
ResettableClass *rc = RESETTABLE_CLASS(klass);
device_class_set_parent_realize(dc, loongarch_pic_common_realize,
&lpcc->parent_realize);
resettable_class_set_parent_phases(rc, NULL,
loongarch_pic_common_reset_hold,
NULL, &lpcc->parent_phases);
device_class_set_props(dc, loongarch_pic_common_properties);
dc->vmsd = &vmstate_loongarch_pic_common;
}

1
include/hw/intc/loongarch_pic_common.h
View file

@ -76,6 +76,7 @@ struct LoongArchPICCommonClass {
SysBusDeviceClass parent_class;
DeviceRealize parent_realize;
ResettablePhases parent_phases;
int (*pre_save)(LoongArchPICCommonState *s);
int (*post_load)(LoongArchPICCommonState *s, int version_id);
};