[Qemu-devel] [PATCH 3/6] hid: introduce hid vmstate macros

[Gerd Hoffmann <kraxel@redhat.com>]

From: Michael Walle <michael@walle.cc>

Add VMSTATE macros to describe a HIDState. Based on usb-hid.c descriptions.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/hid.c |   58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 hw/hw.h  |   20 ++++++++++++++++++++
 2 files changed, 78 insertions(+), 0 deletions(-)

diff --git a/hw/hid.c b/hw/hid.c
index 3dc4246..ec066cf 100644
--- a/hw/hid.c
+++ b/hw/hid.c
@@ -407,3 +407,61 @@ void hid_init(HIDState *hs, int kind, HIDEventFunc event)
                                                         1, "QEMU HID Tablet");
     }
 }
+
+static int hid_post_load(void *opaque, int version_id)
+{
+    HIDState *s = opaque;
+
+    if (s->idle) {
+        hid_set_next_idle(s, qemu_get_clock_ns(vm_clock));
+    }
+    return 0;
+}
+
+static const VMStateDescription vmstate_hid_ptr_queue = {
+    .name = "HIDPointerEventQueue",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_INT32(xdx, HIDPointerEvent),
+        VMSTATE_INT32(ydy, HIDPointerEvent),
+        VMSTATE_INT32(dz, HIDPointerEvent),
+        VMSTATE_INT32(buttons_state, HIDPointerEvent),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+const VMStateDescription vmstate_hid_ptr_device = {
+    .name = "HIDPointerDevice",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .post_load = hid_post_load,
+    .fields = (VMStateField[]) {
+        VMSTATE_STRUCT_ARRAY(ptr.queue, HIDState, QUEUE_LENGTH, 0,
+                             vmstate_hid_ptr_queue, HIDPointerEvent),
+        VMSTATE_UINT32(head, HIDState),
+        VMSTATE_UINT32(n, HIDState),
+        VMSTATE_INT32(protocol, HIDState),
+        VMSTATE_UINT8(idle, HIDState),
+        VMSTATE_END_OF_LIST(),
+    }
+};
+
+const VMStateDescription vmstate_hid_keyboard_device = {
+    .name = "HIDKeyboardDevice",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .post_load = hid_post_load,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(kbd.keycodes, HIDState, QUEUE_LENGTH),
+        VMSTATE_UINT32(head, HIDState),
+        VMSTATE_UINT32(n, HIDState),
+        VMSTATE_UINT16(kbd.modifiers, HIDState),
+        VMSTATE_UINT8(kbd.leds, HIDState),
+        VMSTATE_UINT8_ARRAY(kbd.key, HIDState, 16),
+        VMSTATE_INT32(kbd.keys, HIDState),
+        VMSTATE_INT32(protocol, HIDState),
+        VMSTATE_UINT8(idle, HIDState),
+        VMSTATE_END_OF_LIST(),
+    }
+};
diff --git a/hw/hw.h b/hw/hw.h
index df6ca65..a124da9 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -701,6 +701,26 @@ extern const VMStateDescription vmstate_ptimer;
     .offset     = vmstate_offset_pointer(_state, _field, ptimer_state), \
 }
 
+extern const VMStateDescription vmstate_hid_keyboard_device;
+
+#define VMSTATE_HID_KEYBOARD_DEVICE(_field, _state) {                \
+    .name       = (stringify(_field)),                               \
+    .size       = sizeof(HIDState),                                  \
+    .vmsd       = &vmstate_hid_keyboard_device,                      \
+    .flags      = VMS_STRUCT,                                        \
+    .offset     = vmstate_offset_value(_state, _field, HIDState),    \
+}
+
+extern const VMStateDescription vmstate_hid_ptr_device;
+
+#define VMSTATE_HID_POINTER_DEVICE(_field, _state) {                 \
+    .name       = (stringify(_field)),                               \
+    .size       = sizeof(HIDState),                                  \
+    .vmsd       = &vmstate_hid_ptr_device,                           \
+    .flags      = VMS_STRUCT,                                        \
+    .offset     = vmstate_offset_value(_state, _field, HIDState),    \
+}
+
 /* _f : field name
    _f_n : num of elements field_name
    _n : num of elements
-- 
1.7.1