1 files changed, 104 insertions, 0 deletions
diff --git a/hw/ioapic_common.c b/hw/ioapic_common.c
new file mode 100644
index 0000000..3aa9a1c
--- /dev/null
+++ b/hw/ioapic_common.c
@@ -0,0 +1,104 @@
+/*
+ *  IOAPIC emulation logic - common bits of emulated and KVM kernel model
+ *
+ *  Copyright (c) 2004-2005 Fabrice Bellard
+ *  Copyright (c) 2009      Xiantao Zhang, Intel
+ *  Copyright (c) 2011      Jan Kiszka, Siemens AG
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ioapic.h"
+#include "ioapic_internal.h"
+#include "sysbus.h"
+
+void ioapic_reset_common(DeviceState *dev)
+{
+    IOAPICCommonState *s = DO_UPCAST(IOAPICCommonState, busdev.qdev, dev);
+    int i;
+
+    s->id = 0;
+    s->ioregsel = 0;
+    s->irr = 0;
+    for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+        s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
+    }
+}
+
+static void ioapic_dispatch_pre_save(void *opaque)
+{
+    IOAPICCommonState *s = opaque;
+    IOAPICCommonInfo *info =
+        DO_UPCAST(IOAPICCommonInfo, busdev.qdev, s->busdev.qdev.info);
+
+    if (info->pre_save) {
+        info->pre_save(s);
+    }
+}
+
+static int ioapic_dispatch_post_load(void *opaque, int version_id)
+{
+    IOAPICCommonState *s = opaque;
+    IOAPICCommonInfo *info =
+        DO_UPCAST(IOAPICCommonInfo, busdev.qdev, s->busdev.qdev.info);
+
+    if (info->post_load) {
+        info->post_load(s);
+    }
+    return 0;
+}
+
+static int ioapic_init_common(SysBusDevice *dev)
+{
+    IOAPICCommonState *s = FROM_SYSBUS(IOAPICCommonState, dev);
+    IOAPICCommonInfo *info;
+    static int ioapic_no;
+
+    if (ioapic_no >= MAX_IOAPICS) {
+        return -1;
+    }
+
+    info = DO_UPCAST(IOAPICCommonInfo, busdev.qdev, s->busdev.qdev.info);
+    info->init(s, ioapic_no);
+
+    sysbus_init_mmio(&s->busdev, &s->io_memory);
+    ioapic_no++;
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_ioapic_common = {
+    .name = "ioapic",
+    .version_id = 3,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .pre_save = ioapic_dispatch_pre_save,
+    .post_load = ioapic_dispatch_post_load,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT8(id, IOAPICCommonState),
+        VMSTATE_UINT8(ioregsel, IOAPICCommonState),
+        VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */
+        VMSTATE_UINT32_V(irr, IOAPICCommonState, 2),
+        VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICCommonState, IOAPIC_NUM_PINS),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+void ioapic_qdev_register(IOAPICCommonInfo *info)
+{
+    info->busdev.init = ioapic_init_common;
+    info->busdev.qdev.vmsd = &vmstate_ioapic_common;
+    info->busdev.qdev.no_user = 1;
+    sysbus_register_withprop(&info->busdev);
+}