[qemu.git] / hw / hid.h

#ifndef QEMU_HID_H
#define QEMU_HID_H

#include "migration/vmstate.h"

#define HID_MOUSE     1
#define HID_TABLET    2
#define HID_KEYBOARD  3

typedef struct HIDPointerEvent {
    int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */
    int32_t dz, buttons_state;
} HIDPointerEvent;

#define QUEUE_LENGTH    16 /* should be enough for a triple-click */
#define QUEUE_MASK      (QUEUE_LENGTH-1u)
#define QUEUE_INCR(v)   ((v)++, (v) &= QUEUE_MASK)

typedef struct HIDState HIDState;
typedef void (*HIDEventFunc)(HIDState *s);

typedef struct HIDMouseState {
    HIDPointerEvent queue[QUEUE_LENGTH];
    int mouse_grabbed;
    QEMUPutMouseEntry *eh_entry;
} HIDMouseState;

typedef struct HIDKeyboardState {
    uint32_t keycodes[QUEUE_LENGTH];
    uint16_t modifiers;
    uint8_t leds;
    uint8_t key[16];
    int32_t keys;
} HIDKeyboardState;

struct HIDState {
    union {
        HIDMouseState ptr;
        HIDKeyboardState kbd;
    };
    uint32_t head; /* index into circular queue */
    uint32_t n;
    int kind;
    int32_t protocol;
    uint8_t idle;
    int64_t next_idle_clock;
    HIDEventFunc event;
};

void hid_init(HIDState *hs, int kind, HIDEventFunc event);
void hid_reset(HIDState *hs);
void hid_free(HIDState *hs);

bool hid_has_events(HIDState *hs);
void hid_set_next_idle(HIDState *hs, int64_t curtime);
void hid_pointer_activate(HIDState *hs);
int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);
int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);

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),    \
}


#endif /* QEMU_HID_H */
Commit	Line	Data
dcfda673 GH	1	#ifndef QEMU_HID_H
	2	#define QEMU_HID_H
	3
caf71f86	4	#include "migration/vmstate.h"
701a8f76	5
dcfda673 GH	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;
b069d348 GH	44	int32_t protocol;
	45	uint8_t idle;
	46	int64_t next_idle_clock;
dcfda673 GH	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);
b069d348	55	void hid_set_next_idle(HIDState *hs, int64_t curtime);
21635e12	56	void hid_pointer_activate(HIDState *hs);
dcfda673 GH	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
701a8f76 PB	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
dcfda673	82	#endif /* QEMU_HID_H */