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qemu/hw/usb/dev-wacom.c
Crístian Viana 93bfef4c6e Allow machines to configure the QEMU_VERSION that's exposed via hardware 
QEMU exposes its version to the guest's hardware and in some cases that is wrong
(e.g. Windows prints messages about driver updates when you switch
the QEMU version).
There is a new field now on the struct QEmuMachine, hw_version, which may
contain the version that the specific machine should report. If that field is
set, then that machine will report that version to the guest.

Signed-off-by: Crístian Viana <vianac@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-19 13:36:56 -05:00

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/*
* Wacom PenPartner USB tablet emulation.
*
* Copyright (c) 2006 Openedhand Ltd.
* Author: Andrzej Zaborowski <balrog@zabor.org>
*
* Based on hw/usb-hid.c:
* Copyright (c) 2005 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/hw.h"
#include "console.h"
#include "hw/usb.h"
#include "hw/usb/desc.h"
/* Interface requests */
#define WACOM_GET_REPORT 0x2101
#define WACOM_SET_REPORT 0x2109
/* HID interface requests */
#define HID_GET_REPORT 0xa101
#define HID_GET_IDLE 0xa102
#define HID_GET_PROTOCOL 0xa103
#define HID_SET_IDLE 0x210a
#define HID_SET_PROTOCOL 0x210b
typedef struct USBWacomState {
USBDevice dev;
QEMUPutMouseEntry *eh_entry;
int dx, dy, dz, buttons_state;
int x, y;
int mouse_grabbed;
enum {
WACOM_MODE_HID = 1,
WACOM_MODE_WACOM = 2,
} mode;
uint8_t idle;
int changed;
} USBWacomState;
enum {
STR_MANUFACTURER = 1,
STR_PRODUCT,
STR_SERIALNUMBER,
};
static const USBDescStrings desc_strings = {
[STR_MANUFACTURER] = "QEMU",
[STR_PRODUCT] = "Wacom PenPartner",
[STR_SERIALNUMBER] = "1",
};
static const USBDescIface desc_iface_wacom = {
.bInterfaceNumber = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0x01, /* boot */
.bInterfaceProtocol = 0x02,
.ndesc = 1,
.descs = (USBDescOther[]) {
{
/* HID descriptor */
.data = (uint8_t[]) {
0x09, /* u8 bLength */
0x21, /* u8 bDescriptorType */
0x01, 0x10, /* u16 HID_class */
0x00, /* u8 country_code */
0x01, /* u8 num_descriptors */
0x22, /* u8 type: Report */
0x6e, 0, /* u16 len */
},
},
},
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 8,
.bInterval = 0x0a,
},
},
};
static const USBDescDevice desc_device_wacom = {
.bcdUSB = 0x0110,
.bMaxPacketSize0 = 8,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.bmAttributes = 0x80,
.bMaxPower = 40,
.nif = 1,
.ifs = &desc_iface_wacom,
},
},
};
static const USBDesc desc_wacom = {
.id = {
.idVendor = 0x056a,
.idProduct = 0x0000,
.bcdDevice = 0x4210,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT,
.iSerialNumber = STR_SERIALNUMBER,
},
.full = &desc_device_wacom,
.str = desc_strings,
};
static void usb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
USBWacomState *s = opaque;
s->dx += dx1;
s->dy += dy1;
s->dz += dz1;
s->buttons_state = buttons_state;
s->changed = 1;
}
static void usb_wacom_event(void *opaque,
int x, int y, int dz, int buttons_state)
{
USBWacomState *s = opaque;
/* scale to Penpartner resolution */
s->x = (x * 5040 / 0x7FFF);
s->y = (y * 3780 / 0x7FFF);
s->dz += dz;
s->buttons_state = buttons_state;
s->changed = 1;
}
static inline int int_clamp(int val, int vmin, int vmax)
{
if (val < vmin)
return vmin;
else if (val > vmax)
return vmax;
else
return val;
}
static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
{
int dx, dy, dz, b, l;
if (!s->mouse_grabbed) {
s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
"QEMU PenPartner tablet");
qemu_activate_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 1;
}
dx = int_clamp(s->dx, -128, 127);
dy = int_clamp(s->dy, -128, 127);
dz = int_clamp(s->dz, -128, 127);
s->dx -= dx;
s->dy -= dy;
s->dz -= dz;
b = 0;
if (s->buttons_state & MOUSE_EVENT_LBUTTON)
b |= 0x01;
if (s->buttons_state & MOUSE_EVENT_RBUTTON)
b |= 0x02;
if (s->buttons_state & MOUSE_EVENT_MBUTTON)
b |= 0x04;
buf[0] = b;
buf[1] = dx;
buf[2] = dy;
l = 3;
if (len >= 4) {
buf[3] = dz;
l = 4;
}
return l;
}
static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
{
int b;
if (!s->mouse_grabbed) {
s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
"QEMU PenPartner tablet");
qemu_activate_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 1;
}
b = 0;
if (s->buttons_state & MOUSE_EVENT_LBUTTON)
b |= 0x01;
if (s->buttons_state & MOUSE_EVENT_RBUTTON)
b |= 0x40;
if (s->buttons_state & MOUSE_EVENT_MBUTTON)
b |= 0x20; /* eraser */
if (len < 7)
return 0;
buf[0] = s->mode;
buf[5] = 0x00 | (b & 0xf0);
buf[1] = s->x & 0xff;
buf[2] = s->x >> 8;
buf[3] = s->y & 0xff;
buf[4] = s->y >> 8;
if (b & 0x3f) {
buf[6] = 0;
} else {
buf[6] = (unsigned char) -127;
}
return 7;
}
static void usb_wacom_handle_reset(USBDevice *dev)
{
USBWacomState *s = (USBWacomState *) dev;
s->dx = 0;
s->dy = 0;
s->dz = 0;
s->x = 0;
s->y = 0;
s->buttons_state = 0;
s->mode = WACOM_MODE_HID;
}
static int usb_wacom_handle_control(USBDevice *dev, USBPacket *p,
int request, int value, int index, int length, uint8_t *data)
{
USBWacomState *s = (USBWacomState *) dev;
int ret;
ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
if (ret >= 0) {
return ret;
}
ret = 0;
switch (request) {
case WACOM_SET_REPORT:
if (s->mouse_grabbed) {
qemu_remove_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 0;
}
s->mode = data[0];
ret = 0;
break;
case WACOM_GET_REPORT:
data[0] = 0;
data[1] = s->mode;
ret = 2;
break;
/* USB HID requests */
case HID_GET_REPORT:
if (s->mode == WACOM_MODE_HID)
ret = usb_mouse_poll(s, data, length);
else if (s->mode == WACOM_MODE_WACOM)
ret = usb_wacom_poll(s, data, length);
break;
case HID_GET_IDLE:
ret = 1;
data[0] = s->idle;
break;
case HID_SET_IDLE:
s->idle = (uint8_t) (value >> 8);
ret = 0;
break;
default:
ret = USB_RET_STALL;
break;
}
return ret;
}
static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
{
USBWacomState *s = (USBWacomState *) dev;
uint8_t buf[p->iov.size];
int ret = 0;
switch (p->pid) {
case USB_TOKEN_IN:
if (p->ep->nr == 1) {
if (!(s->changed || s->idle))
return USB_RET_NAK;
s->changed = 0;
if (s->mode == WACOM_MODE_HID)
ret = usb_mouse_poll(s, buf, p->iov.size);
else if (s->mode == WACOM_MODE_WACOM)
ret = usb_wacom_poll(s, buf, p->iov.size);
usb_packet_copy(p, buf, ret);
break;
}
/* Fall through. */
case USB_TOKEN_OUT:
default:
ret = USB_RET_STALL;
break;
}
return ret;
}
static void usb_wacom_handle_destroy(USBDevice *dev)
{
USBWacomState *s = (USBWacomState *) dev;
if (s->mouse_grabbed) {
qemu_remove_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 0;
}
}
static int usb_wacom_initfn(USBDevice *dev)
{
USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
usb_desc_create_serial(dev);
usb_desc_init(dev);
s->changed = 1;
return 0;
}
static const VMStateDescription vmstate_usb_wacom = {
.name = "usb-wacom",
.unmigratable = 1,
};
static void usb_wacom_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
uc->product_desc = "QEMU PenPartner Tablet";
uc->usb_desc = &desc_wacom;
uc->init = usb_wacom_initfn;
uc->handle_reset = usb_wacom_handle_reset;
uc->handle_control = usb_wacom_handle_control;
uc->handle_data = usb_wacom_handle_data;
uc->handle_destroy = usb_wacom_handle_destroy;
dc->desc = "QEMU PenPartner Tablet";
dc->vmsd = &vmstate_usb_wacom;
}
static TypeInfo wacom_info = {
.name = "usb-wacom-tablet",
.parent = TYPE_USB_DEVICE,
.instance_size = sizeof(USBWacomState),
.class_init = usb_wacom_class_init,
};
static void usb_wacom_register_types(void)
{
type_register_static(&wacom_info);
usb_legacy_register("usb-wacom-tablet", "wacom-tablet", NULL);
}
type_init(usb_wacom_register_types)
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