Commit 55a1d80a authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

virtio-input: emulated devices [device] 



This patch adds the virtio-input-hid base class and
virtio-{keyboard,mouse,tablet} subclasses building on the base class.
They are hooked up to the qemu input core and deliver input events
to the guest like all other hid devices (ps/2 kbd, usb tablet, ...).

Using them is as simple as adding "-device virtio-tablet-device" to
your command line, for use all transports except pci.  virtio-pci
support comes as separate patch, once virtio-pci got virtio 1.0
support.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent f73ddbad

hw/input/Makefile.objs

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ common-obj-$(CONFIG_VMMOUSE) += vmmouse.o 


ifeq ($(CONFIG_LINUX),y)

common-obj-$(CONFIG_VIRTIO) += virtio-input.o

common-obj-$(CONFIG_VIRTIO) += virtio-input-hid.o

endif



obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o

hw/input/virtio-input-hid.c

0 → 100644
+502 −0
Original line number Diff line number Diff line 
/*

 * This work is licensed under the terms of the GNU GPL, version 2 or

 * (at your option) any later version.  See the COPYING file in the

 * top-level directory.

 */



#include "qemu/iov.h"



#include "hw/qdev.h"

#include "hw/virtio/virtio.h"

#include "hw/virtio/virtio-input.h"



#undef CONFIG_CURSES

#include "ui/console.h"



#include "standard-headers/linux/input.h"



#define VIRTIO_ID_NAME_KEYBOARD "QEMU Virtio Keyboard"

#define VIRTIO_ID_NAME_MOUSE    "QEMU Virtio Mouse"

#define VIRTIO_ID_NAME_TABLET   "QEMU Virtio Tablet"



/* ----------------------------------------------------------------- */



static const unsigned int keymap_qcode[Q_KEY_CODE_MAX] = {

    [Q_KEY_CODE_ESC]                 = KEY_ESC,

    [Q_KEY_CODE_1]                   = KEY_1,

    [Q_KEY_CODE_2]                   = KEY_2,

    [Q_KEY_CODE_3]                   = KEY_3,

    [Q_KEY_CODE_4]                   = KEY_4,

    [Q_KEY_CODE_5]                   = KEY_5,

    [Q_KEY_CODE_6]                   = KEY_6,

    [Q_KEY_CODE_7]                   = KEY_7,

    [Q_KEY_CODE_8]                   = KEY_8,

    [Q_KEY_CODE_9]                   = KEY_9,

    [Q_KEY_CODE_0]                   = KEY_0,

    [Q_KEY_CODE_MINUS]               = KEY_MINUS,

    [Q_KEY_CODE_EQUAL]               = KEY_EQUAL,

    [Q_KEY_CODE_BACKSPACE]           = KEY_BACKSPACE,



    [Q_KEY_CODE_TAB]                 = KEY_TAB,

    [Q_KEY_CODE_Q]                   = KEY_Q,

    [Q_KEY_CODE_W]                   = KEY_W,

    [Q_KEY_CODE_E]                   = KEY_E,

    [Q_KEY_CODE_R]                   = KEY_R,

    [Q_KEY_CODE_T]                   = KEY_T,

    [Q_KEY_CODE_Y]                   = KEY_Y,

    [Q_KEY_CODE_U]                   = KEY_U,

    [Q_KEY_CODE_I]                   = KEY_I,

    [Q_KEY_CODE_O]                   = KEY_O,

    [Q_KEY_CODE_P]                   = KEY_P,

    [Q_KEY_CODE_BRACKET_LEFT]        = KEY_LEFTBRACE,

    [Q_KEY_CODE_BRACKET_RIGHT]       = KEY_RIGHTBRACE,

    [Q_KEY_CODE_RET]                 = KEY_ENTER,



    [Q_KEY_CODE_CTRL]                = KEY_LEFTCTRL,

    [Q_KEY_CODE_A]                   = KEY_A,

    [Q_KEY_CODE_S]                   = KEY_S,

    [Q_KEY_CODE_D]                   = KEY_D,

    [Q_KEY_CODE_F]                   = KEY_F,

    [Q_KEY_CODE_G]                   = KEY_G,

    [Q_KEY_CODE_H]                   = KEY_H,

    [Q_KEY_CODE_J]                   = KEY_J,

    [Q_KEY_CODE_K]                   = KEY_K,

    [Q_KEY_CODE_L]                   = KEY_L,

    [Q_KEY_CODE_SEMICOLON]           = KEY_SEMICOLON,

    [Q_KEY_CODE_APOSTROPHE]          = KEY_APOSTROPHE,

    [Q_KEY_CODE_GRAVE_ACCENT]        = KEY_GRAVE,



    [Q_KEY_CODE_SHIFT]               = KEY_LEFTSHIFT,

    [Q_KEY_CODE_BACKSLASH]           = KEY_BACKSLASH,

    [Q_KEY_CODE_LESS]                = KEY_102ND,

    [Q_KEY_CODE_Z]                   = KEY_Z,

    [Q_KEY_CODE_X]                   = KEY_X,

    [Q_KEY_CODE_C]                   = KEY_C,

    [Q_KEY_CODE_V]                   = KEY_V,

    [Q_KEY_CODE_B]                   = KEY_B,

    [Q_KEY_CODE_N]                   = KEY_N,

    [Q_KEY_CODE_M]                   = KEY_M,

    [Q_KEY_CODE_COMMA]               = KEY_COMMA,

    [Q_KEY_CODE_DOT]                 = KEY_DOT,

    [Q_KEY_CODE_SLASH]               = KEY_SLASH,

    [Q_KEY_CODE_SHIFT_R]             = KEY_RIGHTSHIFT,



    [Q_KEY_CODE_ALT]                 = KEY_LEFTALT,

    [Q_KEY_CODE_SPC]                 = KEY_SPACE,

    [Q_KEY_CODE_CAPS_LOCK]           = KEY_CAPSLOCK,



    [Q_KEY_CODE_F1]                  = KEY_F1,

    [Q_KEY_CODE_F2]                  = KEY_F2,

    [Q_KEY_CODE_F3]                  = KEY_F3,

    [Q_KEY_CODE_F4]                  = KEY_F4,

    [Q_KEY_CODE_F5]                  = KEY_F5,

    [Q_KEY_CODE_F6]                  = KEY_F6,

    [Q_KEY_CODE_F7]                  = KEY_F7,

    [Q_KEY_CODE_F8]                  = KEY_F8,

    [Q_KEY_CODE_F9]                  = KEY_F9,

    [Q_KEY_CODE_F10]                 = KEY_F10,

    [Q_KEY_CODE_NUM_LOCK]            = KEY_NUMLOCK,

    [Q_KEY_CODE_SCROLL_LOCK]         = KEY_SCROLLLOCK,



    [Q_KEY_CODE_KP_0]                = KEY_KP0,

    [Q_KEY_CODE_KP_1]                = KEY_KP1,

    [Q_KEY_CODE_KP_2]                = KEY_KP2,

    [Q_KEY_CODE_KP_3]                = KEY_KP3,

    [Q_KEY_CODE_KP_4]                = KEY_KP4,

    [Q_KEY_CODE_KP_5]                = KEY_KP5,

    [Q_KEY_CODE_KP_6]                = KEY_KP6,

    [Q_KEY_CODE_KP_7]                = KEY_KP7,

    [Q_KEY_CODE_KP_8]                = KEY_KP8,

    [Q_KEY_CODE_KP_9]                = KEY_KP9,

    [Q_KEY_CODE_KP_SUBTRACT]         = KEY_KPMINUS,

    [Q_KEY_CODE_KP_ADD]              = KEY_KPPLUS,

    [Q_KEY_CODE_KP_DECIMAL]          = KEY_KPDOT,

    [Q_KEY_CODE_KP_ENTER]            = KEY_KPENTER,

    [Q_KEY_CODE_KP_DIVIDE]           = KEY_KPSLASH,

    [Q_KEY_CODE_KP_MULTIPLY]         = KEY_KPASTERISK,



    [Q_KEY_CODE_F11]                 = KEY_F11,

    [Q_KEY_CODE_F12]                 = KEY_F12,



    [Q_KEY_CODE_CTRL_R]              = KEY_RIGHTCTRL,

    [Q_KEY_CODE_SYSRQ]               = KEY_SYSRQ,

    [Q_KEY_CODE_ALT_R]               = KEY_RIGHTALT,



    [Q_KEY_CODE_HOME]                = KEY_HOME,

    [Q_KEY_CODE_UP]                  = KEY_UP,

    [Q_KEY_CODE_PGUP]                = KEY_PAGEUP,

    [Q_KEY_CODE_LEFT]                = KEY_LEFT,

    [Q_KEY_CODE_RIGHT]               = KEY_RIGHT,

    [Q_KEY_CODE_END]                 = KEY_END,

    [Q_KEY_CODE_DOWN]                = KEY_DOWN,

    [Q_KEY_CODE_PGDN]                = KEY_PAGEDOWN,

    [Q_KEY_CODE_INSERT]              = KEY_INSERT,

    [Q_KEY_CODE_DELETE]              = KEY_DELETE,



    [Q_KEY_CODE_META_L]              = KEY_LEFTMETA,

    [Q_KEY_CODE_META_R]              = KEY_RIGHTMETA,

    [Q_KEY_CODE_MENU]                = KEY_MENU,

};



static const unsigned int keymap_button[INPUT_BUTTON_MAX] = {

    [INPUT_BUTTON_LEFT]              = BTN_LEFT,

    [INPUT_BUTTON_RIGHT]             = BTN_RIGHT,

    [INPUT_BUTTON_MIDDLE]            = BTN_MIDDLE,

    [INPUT_BUTTON_WHEEL_UP]          = BTN_GEAR_UP,

    [INPUT_BUTTON_WHEEL_DOWN]        = BTN_GEAR_DOWN,

};



static const unsigned int axismap_rel[INPUT_AXIS_MAX] = {

    [INPUT_AXIS_X]                   = REL_X,

    [INPUT_AXIS_Y]                   = REL_Y,

};



static const unsigned int axismap_abs[INPUT_AXIS_MAX] = {

    [INPUT_AXIS_X]                   = ABS_X,

    [INPUT_AXIS_Y]                   = ABS_Y,

};



/* ----------------------------------------------------------------- */



static void virtio_input_key_config(VirtIOInput *vinput,

                                    const unsigned int *keymap,

                                    size_t mapsize)

{

    virtio_input_config keys;

    int i, bit, byte, bmax = 0;



    memset(&keys, 0, sizeof(keys));

    for (i = 0; i < mapsize; i++) {

        bit = keymap[i];

        if (!bit) {

            continue;

        }

        byte = bit / 8;

        bit  = bit % 8;

        keys.u.bitmap[byte] |= (1 << bit);

        if (bmax < byte+1) {

            bmax = byte+1;

        }

    }

    keys.select = VIRTIO_INPUT_CFG_EV_BITS;

    keys.subsel = EV_KEY;

    keys.size   = bmax;

    virtio_input_add_config(vinput, &keys);

}



static void virtio_input_handle_event(DeviceState *dev, QemuConsole *src,

                                      InputEvent *evt)

{

    VirtIOInput *vinput = VIRTIO_INPUT(dev);

    virtio_input_event event;

    int qcode;



    switch (evt->kind) {

    case INPUT_EVENT_KIND_KEY:

        qcode = qemu_input_key_value_to_qcode(evt->key->key);

        if (qcode && keymap_qcode[qcode]) {

            event.type  = cpu_to_le16(EV_KEY);

            event.code  = cpu_to_le16(keymap_qcode[qcode]);

            event.value = cpu_to_le32(evt->key->down ? 1 : 0);

            virtio_input_send(vinput, &event);

        } else {

            if (evt->key->down) {

                fprintf(stderr, "%s: unmapped key: %d [%s]\n", __func__,

                        qcode, QKeyCode_lookup[qcode]);

            }

        }

        break;

    case INPUT_EVENT_KIND_BTN:

        if (keymap_button[evt->btn->button]) {

            event.type  = cpu_to_le16(EV_KEY);

            event.code  = cpu_to_le16(keymap_button[evt->btn->button]);

            event.value = cpu_to_le32(evt->btn->down ? 1 : 0);

            virtio_input_send(vinput, &event);

        } else {

            if (evt->btn->down) {

                fprintf(stderr, "%s: unmapped button: %d [%s]\n", __func__,

                        evt->btn->button, InputButton_lookup[evt->btn->button]);

            }

        }

        break;

    case INPUT_EVENT_KIND_REL:

        event.type  = cpu_to_le16(EV_REL);

        event.code  = cpu_to_le16(axismap_rel[evt->rel->axis]);

        event.value = cpu_to_le32(evt->rel->value);

        virtio_input_send(vinput, &event);

        break;

    case INPUT_EVENT_KIND_ABS:

        event.type  = cpu_to_le16(EV_ABS);

        event.code  = cpu_to_le16(axismap_abs[evt->abs->axis]);

        event.value = cpu_to_le32(evt->abs->value);

        virtio_input_send(vinput, &event);

        break;

    default:

        /* keep gcc happy */

        break;

    }

}



static void virtio_input_handle_sync(DeviceState *dev)

{

    VirtIOInput *vinput = VIRTIO_INPUT(dev);

    virtio_input_event event = {

        .type  = cpu_to_le16(EV_SYN),

        .code  = cpu_to_le16(SYN_REPORT),

        .value = 0,

    };



    virtio_input_send(vinput, &event);

}



static void virtio_input_hid_realize(DeviceState *dev, Error **errp)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev);

    vhid->hs = qemu_input_handler_register(dev, vhid->handler);

}



static void virtio_input_hid_unrealize(DeviceState *dev, Error **errp)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev);

    qemu_input_handler_unregister(vhid->hs);

}



static void virtio_input_hid_change_active(VirtIOInput *vinput)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);



    if (vinput->active) {

        qemu_input_handler_activate(vhid->hs);

    } else {

        qemu_input_handler_deactivate(vhid->hs);

    }

}



static void virtio_input_hid_handle_status(VirtIOInput *vinput,

                                           virtio_input_event *event)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);

    int ledbit = 0;



    switch (le16_to_cpu(event->type)) {

    case EV_LED:

        if (event->code == LED_NUML) {

            ledbit = QEMU_NUM_LOCK_LED;

        } else if (event->code == LED_CAPSL) {

            ledbit = QEMU_CAPS_LOCK_LED;

        } else if (event->code == LED_SCROLLL) {

            ledbit = QEMU_SCROLL_LOCK_LED;

        }

        if (event->value) {

            vhid->ledstate |= ledbit;

        } else {

            vhid->ledstate &= ~ledbit;

        }

        kbd_put_ledstate(vhid->ledstate);

        break;

    default:

        fprintf(stderr, "%s: unknown type %d\n", __func__,

                le16_to_cpu(event->type));

        break;

    }

}



static void virtio_input_hid_class_init(ObjectClass *klass, void *data)

{

    VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass);



    vic->realize       = virtio_input_hid_realize;

    vic->unrealize     = virtio_input_hid_unrealize;

    vic->change_active = virtio_input_hid_change_active;

    vic->handle_status = virtio_input_hid_handle_status;

}



static const TypeInfo virtio_input_hid_info = {

    .name          = TYPE_VIRTIO_INPUT_HID,

    .parent        = TYPE_VIRTIO_INPUT,

    .instance_size = sizeof(VirtIOInputHID),

    .class_init    = virtio_input_hid_class_init,

    .abstract      = true,

};



/* ----------------------------------------------------------------- */



static QemuInputHandler virtio_keyboard_handler = {

    .name  = VIRTIO_ID_NAME_KEYBOARD,

    .mask  = INPUT_EVENT_MASK_KEY,

    .event = virtio_input_handle_event,

    .sync  = virtio_input_handle_sync,

};



static struct virtio_input_config virtio_keyboard_config[] = {

    {

        .select    = VIRTIO_INPUT_CFG_ID_NAME,

        .size      = sizeof(VIRTIO_ID_NAME_KEYBOARD),

        .u.string  = VIRTIO_ID_NAME_KEYBOARD,

    },{

        .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,

        .size      = sizeof(struct virtio_input_devids),

        .u.ids     = {

            .bustype = const_le16(BUS_VIRTUAL),

            .vendor  = const_le16(0x0627), /* same we use for usb hid devices */

            .product = const_le16(0x0001),

            .version = const_le16(0x0001),

        },

    },{

        .select    = VIRTIO_INPUT_CFG_EV_BITS,

        .subsel    = EV_REP,

        .size      = 1,

    },{

        .select    = VIRTIO_INPUT_CFG_EV_BITS,

        .subsel    = EV_LED,

        .size      = 1,

        .u.bitmap  = {

            (1 << LED_NUML) | (1 << LED_CAPSL) | (1 << LED_SCROLLL),

        },

    },

    { /* end of list */ },

};



static void virtio_keyboard_init(Object *obj)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);

    VirtIOInput *vinput = VIRTIO_INPUT(obj);



    vhid->handler = &virtio_keyboard_handler;

    virtio_input_init_config(vinput, virtio_keyboard_config);

    virtio_input_key_config(vinput, keymap_qcode,

                            ARRAY_SIZE(keymap_qcode));

}



static const TypeInfo virtio_keyboard_info = {

    .name          = TYPE_VIRTIO_KEYBOARD,

    .parent        = TYPE_VIRTIO_INPUT_HID,

    .instance_size = sizeof(VirtIOInputHID),

    .instance_init = virtio_keyboard_init,

};



/* ----------------------------------------------------------------- */



static QemuInputHandler virtio_mouse_handler = {

    .name  = VIRTIO_ID_NAME_MOUSE,

    .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,

    .event = virtio_input_handle_event,

    .sync  = virtio_input_handle_sync,

};



static struct virtio_input_config virtio_mouse_config[] = {

    {

        .select    = VIRTIO_INPUT_CFG_ID_NAME,

        .size      = sizeof(VIRTIO_ID_NAME_MOUSE),

        .u.string  = VIRTIO_ID_NAME_MOUSE,

    },{

        .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,

        .size      = sizeof(struct virtio_input_devids),

        .u.ids     = {

            .bustype = const_le16(BUS_VIRTUAL),

            .vendor  = const_le16(0x0627), /* same we use for usb hid devices */

            .product = const_le16(0x0002),

            .version = const_le16(0x0001),

        },

    },{

        .select    = VIRTIO_INPUT_CFG_EV_BITS,

        .subsel    = EV_REL,

        .size      = 1,

        .u.bitmap  = {

            (1 << REL_X) | (1 << REL_Y),

        },

    },

    { /* end of list */ },

};



static void virtio_mouse_init(Object *obj)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);

    VirtIOInput *vinput = VIRTIO_INPUT(obj);



    vhid->handler = &virtio_mouse_handler;

    virtio_input_init_config(vinput, virtio_mouse_config);

    virtio_input_key_config(vinput, keymap_button,

                            ARRAY_SIZE(keymap_button));

}



static const TypeInfo virtio_mouse_info = {

    .name          = TYPE_VIRTIO_MOUSE,

    .parent        = TYPE_VIRTIO_INPUT_HID,

    .instance_size = sizeof(VirtIOInputHID),

    .instance_init = virtio_mouse_init,

};



/* ----------------------------------------------------------------- */



static QemuInputHandler virtio_tablet_handler = {

    .name  = VIRTIO_ID_NAME_TABLET,

    .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS,

    .event = virtio_input_handle_event,

    .sync  = virtio_input_handle_sync,

};



static struct virtio_input_config virtio_tablet_config[] = {

    {

        .select    = VIRTIO_INPUT_CFG_ID_NAME,

        .size      = sizeof(VIRTIO_ID_NAME_TABLET),

        .u.string  = VIRTIO_ID_NAME_TABLET,

    },{

        .select    = VIRTIO_INPUT_CFG_ID_DEVIDS,

        .size      = sizeof(struct virtio_input_devids),

        .u.ids     = {

            .bustype = const_le16(BUS_VIRTUAL),

            .vendor  = const_le16(0x0627), /* same we use for usb hid devices */

            .product = const_le16(0x0003),

            .version = const_le16(0x0001),

        },

    },{

        .select    = VIRTIO_INPUT_CFG_EV_BITS,

        .subsel    = EV_ABS,

        .size      = 1,

        .u.bitmap  = {

            (1 << ABS_X) | (1 << ABS_Y),

        },

    },{

        .select    = VIRTIO_INPUT_CFG_ABS_INFO,

        .subsel    = ABS_X,

        .size      = sizeof(virtio_input_absinfo),

        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),

    },{

        .select    = VIRTIO_INPUT_CFG_ABS_INFO,

        .subsel    = ABS_Y,

        .size      = sizeof(virtio_input_absinfo),

        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),

    },

    { /* end of list */ },

};



static void virtio_tablet_init(Object *obj)

{

    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);

    VirtIOInput *vinput = VIRTIO_INPUT(obj);



    vhid->handler = &virtio_tablet_handler;

    virtio_input_init_config(vinput, virtio_tablet_config);

    virtio_input_key_config(vinput, keymap_button,

                            ARRAY_SIZE(keymap_button));

}



static const TypeInfo virtio_tablet_info = {

    .name          = TYPE_VIRTIO_TABLET,

    .parent        = TYPE_VIRTIO_INPUT_HID,

    .instance_size = sizeof(VirtIOInputHID),

    .instance_init = virtio_tablet_init,

};



/* ----------------------------------------------------------------- */



static void virtio_register_types(void)

{

    type_register_static(&virtio_input_hid_info);

    type_register_static(&virtio_keyboard_info);

    type_register_static(&virtio_mouse_info);

    type_register_static(&virtio_tablet_info);

}



type_init(virtio_register_types)

include/hw/virtio/virtio-input.h

+21 −0
Original line number Diff line number Diff line
@@ -34,9 +34,23 @@ typedef struct virtio_input_event virtio_input_event; 
#define VIRTIO_INPUT_CLASS(klass) \

        OBJECT_CLASS_CHECK(VirtIOInputClass, klass, TYPE_VIRTIO_INPUT)



#define TYPE_VIRTIO_INPUT_HID "virtio-input-hid"

#define TYPE_VIRTIO_KEYBOARD  "virtio-keyboard"

#define TYPE_VIRTIO_MOUSE     "virtio-mouse"

#define TYPE_VIRTIO_TABLET    "virtio-tablet"



#define VIRTIO_INPUT_HID(obj) \

        OBJECT_CHECK(VirtIOInputHID, (obj), TYPE_VIRTIO_INPUT_HID)

#define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \

        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)



#define DEFINE_VIRTIO_INPUT_PROPERTIES(_state, _field)       \

        DEFINE_PROP_STRING("serial", _state, _field.serial)



typedef struct VirtIOInput VirtIOInput;

typedef struct VirtIOInputClass VirtIOInputClass;

typedef struct VirtIOInputConfig VirtIOInputConfig;

typedef struct VirtIOInputHID VirtIOInputHID;



struct virtio_input_conf {

    char *serial;
@@ -73,6 +87,13 @@ struct VirtIOInputClass { 
    void (*handle_status)(VirtIOInput *vinput, virtio_input_event *event);

};



struct VirtIOInputHID {

    VirtIOInput                       parent_obj;

    QemuInputHandler                  *handler;

    QemuInputHandlerState             *hs;

    int                               ledstate;

};



void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);

void virtio_input_init_config(VirtIOInput *vinput,

                              virtio_input_config *config);