5a37532d08
Add a linked list of keyboard handlers. Added handlers will go to the head of the list. Removed handlers will be zapped from the list. The head of the list will be used for events. This fixes the keyboard-dead-after-usb-kbd-unplug issue, key events will be re-routed to the ps/2 kbd instead of being discarded. [ v2: fix cut+paste bug found my Markus ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 1366798118-3248-3-git-send-email-kraxel@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
#ifndef QEMU_HID_H
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#define QEMU_HID_H
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#include "migration/vmstate.h"
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#define HID_MOUSE 1
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#define HID_TABLET 2
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#define HID_KEYBOARD 3
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typedef struct HIDPointerEvent {
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int32_t xdx, ydy; /* relative iff it's a mouse, otherwise absolute */
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int32_t dz, buttons_state;
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} HIDPointerEvent;
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#define QUEUE_LENGTH 16 /* should be enough for a triple-click */
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#define QUEUE_MASK (QUEUE_LENGTH-1u)
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#define QUEUE_INCR(v) ((v)++, (v) &= QUEUE_MASK)
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typedef struct HIDState HIDState;
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typedef void (*HIDEventFunc)(HIDState *s);
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typedef struct HIDMouseState {
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HIDPointerEvent queue[QUEUE_LENGTH];
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int mouse_grabbed;
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QEMUPutMouseEntry *eh_entry;
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} HIDMouseState;
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typedef struct HIDKeyboardState {
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uint32_t keycodes[QUEUE_LENGTH];
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uint16_t modifiers;
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uint8_t leds;
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uint8_t key[16];
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int32_t keys;
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QEMUPutKbdEntry *eh_entry;
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} HIDKeyboardState;
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struct HIDState {
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union {
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HIDMouseState ptr;
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HIDKeyboardState kbd;
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};
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uint32_t head; /* index into circular queue */
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uint32_t n;
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int kind;
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int32_t protocol;
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uint8_t idle;
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bool idle_pending;
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QEMUTimer *idle_timer;
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HIDEventFunc event;
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};
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void hid_init(HIDState *hs, int kind, HIDEventFunc event);
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void hid_reset(HIDState *hs);
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void hid_free(HIDState *hs);
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bool hid_has_events(HIDState *hs);
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void hid_set_next_idle(HIDState *hs);
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void hid_pointer_activate(HIDState *hs);
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int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len);
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int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len);
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int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len);
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extern const VMStateDescription vmstate_hid_keyboard_device;
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#define VMSTATE_HID_KEYBOARD_DEVICE(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(HIDState), \
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.vmsd = &vmstate_hid_keyboard_device, \
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.flags = VMS_STRUCT, \
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.offset = vmstate_offset_value(_state, _field, HIDState), \
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}
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extern const VMStateDescription vmstate_hid_ptr_device;
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#define VMSTATE_HID_POINTER_DEVICE(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(HIDState), \
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.vmsd = &vmstate_hid_ptr_device, \
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.flags = VMS_STRUCT, \
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.offset = vmstate_offset_value(_state, _field, HIDState), \
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}
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#endif /* QEMU_HID_H */
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