1 files changed, 113 insertions, 0 deletions
diff --git a/hw/intc/loongarch_extioi_common.c b/hw/intc/loongarch_extioi_common.c
new file mode 100644
index 0000000000..e50431f124
--- /dev/null
+++ b/hw/intc/loongarch_extioi_common.c
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Loongson extioi interrupt controller emulation
+ * Copyright (C) 2024 Loongson Technology Corporation Limited
+ */
+#include "qemu/osdep.h"
+#include "qemu/module.h"
+#include "qapi/error.h"
+#include "hw/qdev-properties.h"
+#include "hw/intc/loongarch_extioi_common.h"
+#include "migration/vmstate.h"
+
+static void loongarch_extioi_common_realize(DeviceState *dev, Error **errp)
+{
+    LoongArchExtIOICommonState *s = (LoongArchExtIOICommonState *)dev;
+
+    if (s->num_cpu == 0) {
+        error_setg(errp, "num-cpu must be at least 1");
+        return;
+    }
+}
+
+static int loongarch_extioi_common_pre_save(void *opaque)
+{
+    LoongArchExtIOICommonState *s = (LoongArchExtIOICommonState *)opaque;
+    LoongArchExtIOICommonClass *lecc = LOONGARCH_EXTIOI_COMMON_GET_CLASS(s);
+
+    if (lecc->pre_save) {
+        return lecc->pre_save(s);
+    }
+
+    return 0;
+}
+
+static int loongarch_extioi_common_post_load(void *opaque, int version_id)
+{
+    LoongArchExtIOICommonState *s = (LoongArchExtIOICommonState *)opaque;
+    LoongArchExtIOICommonClass *lecc = LOONGARCH_EXTIOI_COMMON_GET_CLASS(s);
+
+    if (lecc->post_load) {
+        return lecc->post_load(s, version_id);
+    }
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_extioi_core = {
+    .name = "extioi-core",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (const VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(coreisr, ExtIOICore, EXTIOI_IRQS_GROUP_COUNT),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_loongarch_extioi = {
+    .name = "loongarch.extioi",
+    .version_id = 3,
+    .minimum_version_id = 3,
+    .pre_save  = loongarch_extioi_common_pre_save,
+    .post_load = loongarch_extioi_common_post_load,
+    .fields = (const VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS_GROUP_COUNT),
+        VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS_NODETYPE_COUNT / 2),
+        VMSTATE_UINT32_ARRAY(enable, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS / 32),
+        VMSTATE_UINT32_ARRAY(isr, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS / 32),
+        VMSTATE_UINT32_ARRAY(ipmap, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS_IPMAP_SIZE / 4),
+        VMSTATE_UINT32_ARRAY(coremap, LoongArchExtIOICommonState,
+                             EXTIOI_IRQS / 4),
+        VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongArchExtIOICommonState,
+                             num_cpu, vmstate_extioi_core, ExtIOICore),
+        VMSTATE_UINT32(features, LoongArchExtIOICommonState),
+        VMSTATE_UINT32(status, LoongArchExtIOICommonState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const Property extioi_properties[] = {
+    DEFINE_PROP_UINT32("num-cpu", LoongArchExtIOICommonState, num_cpu, 1),
+    DEFINE_PROP_BIT("has-virtualization-extension", LoongArchExtIOICommonState,
+                    features, EXTIOI_HAS_VIRT_EXTENSION, 0),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void loongarch_extioi_common_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    LoongArchExtIOICommonClass *lecc = LOONGARCH_EXTIOI_COMMON_CLASS(klass);
+
+    device_class_set_parent_realize(dc, loongarch_extioi_common_realize,
+                                    &lecc->parent_realize);
+    device_class_set_props(dc, extioi_properties);
+    dc->vmsd = &vmstate_loongarch_extioi;
+}
+
+static const TypeInfo loongarch_extioi_common_types[] = {
+    {
+        .name               = TYPE_LOONGARCH_EXTIOI_COMMON,
+        .parent             = TYPE_SYS_BUS_DEVICE,
+        .instance_size      = sizeof(LoongArchExtIOICommonState),
+        .class_size         = sizeof(LoongArchExtIOICommonClass),
+        .class_init         = loongarch_extioi_common_class_init,
+        .abstract           = true,
+    }
+};
+
+DEFINE_TYPES(loongarch_extioi_common_types)