s390x/tod: factor out TOD into separate device

Let's treat this like a separate device. TCG will have to store the
actual state/time later on.

Include cpu-qom.h in kvm_s390x.h (due to S390CPU) to compile tod-kvm.c.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180627134410.4901-4-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/include/hw/s390x/tod.h b/include/hw/s390x/tod.h
new file mode 100644
index 0000000000..7096b574ae
--- /dev/null
+++ b/include/hw/s390x/tod.h
@@ -0,0 +1,46 @@
+/*
+ * TOD (Time Of Day) clock
+ *
+ * Copyright 2018 Red Hat, Inc.
+ * Author(s): David Hildenbrand <david@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef HW_S390_TOD_H
+#define HW_S390_TOD_H
+
+#include "hw/qdev.h"
+
+typedef struct S390TOD {
+    uint8_t high;
+    uint64_t low;
+} S390TOD;
+
+#define TYPE_S390_TOD "s390-tod"
+#define S390_TOD(obj) OBJECT_CHECK(S390TODState, (obj), TYPE_S390_TOD)
+#define S390_TOD_CLASS(oc) OBJECT_CLASS_CHECK(S390TODClass, (oc), \
+                                              TYPE_S390_TOD)
+#define S390_TOD_GET_CLASS(obj) OBJECT_GET_CLASS(S390TODClass, (obj), \
+                                                 TYPE_S390_TOD)
+#define TYPE_KVM_S390_TOD TYPE_S390_TOD "-kvm"
+#define TYPE_QEMU_S390_TOD TYPE_S390_TOD "-qemu"
+
+typedef struct S390TODState {
+    /* private */
+    DeviceState parent_obj;
+} S390TODState;
+
+typedef struct S390TODClass {
+    /* private */
+    DeviceClass parent_class;
+
+    /* public */
+    void (*get)(const S390TODState *td, S390TOD *tod, Error **errp);
+    void (*set)(S390TODState *td, const S390TOD *tod, Error **errp);
+} S390TODClass;
+
+void s390_init_tod(void);
+
+#endif