linux-user: stack_base is now mandatory on all targets
[qemu.git] / hw / hid.h
1 #ifndef QEMU_HID_H
2 #define QEMU_HID_H
3
4 #include "vmstate.h"
5
6 #define HID_MOUSE 1
7 #define HID_TABLET 2
8 #define HID_KEYBOARD 3
9
10 typedef struct HIDPointerEvent {
11 int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */
12 int32_t dz, buttons_state;
13 } HIDPointerEvent;
14
15 #define QUEUE_LENGTH 16 /* should be enough for a triple-click */
16 #define QUEUE_MASK (QUEUE_LENGTH-1u)
17 #define QUEUE_INCR(v) ((v)++, (v) &= QUEUE_MASK)
18
19 typedef struct HIDState HIDState;
20 typedef void (*HIDEventFunc)(HIDState *s);
21
22 typedef struct HIDMouseState {
23 HIDPointerEvent queue[QUEUE_LENGTH];
24 int mouse_grabbed;
25 QEMUPutMouseEntry *eh_entry;
26 } HIDMouseState;
27
28 typedef struct HIDKeyboardState {
29 uint32_t keycodes[QUEUE_LENGTH];
30 uint16_t modifiers;
31 uint8_t leds;
32 uint8_t key[16];
33 int32_t keys;
34 } HIDKeyboardState;
35
36 struct HIDState {
37 union {
38 HIDMouseState ptr;
39 HIDKeyboardState kbd;
40 };
41 uint32_t head; /* index into circular queue */
42 uint32_t n;
43 int kind;
44 int32_t protocol;
45 uint8_t idle;
46 int64_t next_idle_clock;
47 HIDEventFunc event;
48 };
49
50 void hid_init(HIDState *hs, int kind, HIDEventFunc event);
51 void hid_reset(HIDState *hs);
52 void hid_free(HIDState *hs);
53
54 bool hid_has_events(HIDState *hs);
55 void hid_set_next_idle(HIDState *hs, int64_t curtime);
56 void hid_pointer_activate(HIDState *hs);
57 int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
58 int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);
59 int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);
60
61 extern const VMStateDescription vmstate_hid_keyboard_device;
62
63 #define VMSTATE_HID_KEYBOARD_DEVICE(_field, _state) { \
64 .name = (stringify(_field)), \
65 .size = sizeof(HIDState), \
66 .vmsd = &vmstate_hid_keyboard_device, \
67 .flags = VMS_STRUCT, \
68 .offset = vmstate_offset_value(_state, _field, HIDState), \
69 }
70
71 extern const VMStateDescription vmstate_hid_ptr_device;
72
73 #define VMSTATE_HID_POINTER_DEVICE(_field, _state) { \
74 .name = (stringify(_field)), \
75 .size = sizeof(HIDState), \
76 .vmsd = &vmstate_hid_ptr_device, \
77 .flags = VMS_STRUCT, \
78 .offset = vmstate_offset_value(_state, _field, HIDState), \
79 }
80
81
82 #endif /* QEMU_HID_H */