qemu/hw/hid.h
Gerd Hoffmann 21635e121a usb/hid: add hid_pointer_activate, use it
HID reorganziation broke the usb tablet in windows xp.  The reason is
that xp activates idle before it starts polling, which creates a
chicken-and-egg issue:  We don't call hid_pointer_poll because there are
no pending events.  We don't get any events because the activation code
in hid_pointer_poll is never executed and thus all pointer events are
routed to the PS/2 mouse by qemu.

Fix this by creating a hid_pointer_activate function and call it from
usb-hid when the guest sets the idle state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-10 14:14:00 +02:00

60 lines
1.5 KiB
C

#ifndef QEMU_HID_H
#define QEMU_HID_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);
#endif /* QEMU_HID_H */