[qemu.git] / hw / usb-wacom.c

/*
 * Wacom PenPartner USB tablet emulation.
 *
 * Copyright (c) 2006 Openedhand Ltd.
 * Author: Andrzej Zaborowski <[email protected]>
 *
 * 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 "vl.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;
} USBWacomState;

static const uint8_t qemu_wacom_dev_descriptor[] = {
    0x12,	/*  u8 bLength; */
    0x01,	/*  u8 bDescriptorType; Device */
    0x10, 0x10,	/*  u16 bcdUSB; v1.10 */

    0x00,	/*  u8  bDeviceClass; */
    0x00,	/*  u8  bDeviceSubClass; */
    0x00,	/*  u8  bDeviceProtocol; [ low/full speeds only ] */
    0x08,	/*  u8  bMaxPacketSize0; 8 Bytes */

    0x6a, 0x05,	/*  u16 idVendor; */
    0x00, 0x00,	/*  u16 idProduct; */
    0x10, 0x42,	/*  u16 bcdDevice */

    0x01,	/*  u8  iManufacturer; */
    0x02,	/*  u8  iProduct; */
    0x00,	/*  u8  iSerialNumber; */
    0x01,	/*  u8  bNumConfigurations; */
};

static const uint8_t qemu_wacom_config_descriptor[] = {
    /* one configuration */
    0x09,	/*  u8  bLength; */
    0x02,	/*  u8  bDescriptorType; Configuration */
    0x22, 0x00,	/*  u16 wTotalLength; */
    0x01,	/*  u8  bNumInterfaces; (1) */
    0x01,	/*  u8  bConfigurationValue; */
    0x00,	/*  u8  iConfiguration; */
    0x80,	/*  u8  bmAttributes; 
				 Bit 7: must be set,
				     6: Self-powered,
				     5: Remote wakeup,
				     4..0: resvd */
    40,		/*  u8  MaxPower; */

    /* one interface */
    0x09,	/*  u8  if_bLength; */
    0x04,	/*  u8  if_bDescriptorType; Interface */
    0x00,	/*  u8  if_bInterfaceNumber; */
    0x00,	/*  u8  if_bAlternateSetting; */
    0x01,	/*  u8  if_bNumEndpoints; */
    0x03,	/*  u8  if_bInterfaceClass; HID */
    0x01,	/*  u8  if_bInterfaceSubClass; Boot */
    0x02,	/*  u8  if_bInterfaceProtocol; [usb1.1 or single tt] */
    0x00,	/*  u8  if_iInterface; */

    /* HID descriptor */
    0x09,	/*  u8  bLength; */
    0x21,	/*  u8  bDescriptorType; */
    0x01, 0x10,	/*  u16 HID_class */
    0x00,	/*  u8  country_code */
    0x01,	/*  u8  num_descriptors */
    0x22,	/*  u8  type; Report */
    0x6e, 0x00,	/*  u16 len */

    /* one endpoint (status change endpoint) */
    0x07,	/*  u8  ep_bLength; */
    0x05,	/*  u8  ep_bDescriptorType; Endpoint */
    0x81,	/*  u8  ep_bEndpointAddress; IN Endpoint 1 */
    0x03,	/*  u8  ep_bmAttributes; Interrupt */
    0x08, 0x00,	/*  u16 ep_wMaxPacketSize; */
    0x0a,	/*  u8  ep_bInterval; */
};

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;
}

static void usb_wacom_event(void *opaque,
                            int x, int y, int dz, int buttons_state)
{
    USBWacomState *s = opaque;

    s->x = x;
    s->y = y;
    s->dz += dz;
    s->buttons_state = buttons_state;
}

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");
        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");
        s->mouse_grabbed = 1;
    }

    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;

    if (len < 7)
        return 0;

    buf[0] = s->mode;
    buf[5] = 0x00;
    if (b) {
        buf[1] = s->x & 0xff;
        buf[2] = s->x >> 8;
        buf[3] = s->y & 0xff;
        buf[4] = s->y >> 8;
        buf[6] = 0;
    } else {
        buf[1] = 0;
        buf[2] = 0;
        buf[3] = 0;
        buf[4] = 0;
        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, int request, int value,
                                    int index, int length, uint8_t *data)
{
    USBWacomState *s = (USBWacomState *) dev;
    int ret = 0;

    switch (request) {
    case DeviceRequest | USB_REQ_GET_STATUS:
        data[0] = (1 << USB_DEVICE_SELF_POWERED) |
            (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
        data[1] = 0x00;
        ret = 2;
        break;
    case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
        if (value == USB_DEVICE_REMOTE_WAKEUP) {
            dev->remote_wakeup = 0;
        } else {
            goto fail;
        }
        ret = 0;
        break;
    case DeviceOutRequest | USB_REQ_SET_FEATURE:
        if (value == USB_DEVICE_REMOTE_WAKEUP) {
            dev->remote_wakeup = 1;
        } else {
            goto fail;
        }
        ret = 0;
        break;
    case DeviceOutRequest | USB_REQ_SET_ADDRESS:
        dev->addr = value;
        ret = 0;
        break;
    case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
        switch (value >> 8) {
        case USB_DT_DEVICE:
            memcpy(data, qemu_wacom_dev_descriptor, 
                   sizeof(qemu_wacom_dev_descriptor));
            ret = sizeof(qemu_wacom_dev_descriptor);
            break;
        case USB_DT_CONFIG:
       	    memcpy(data, qemu_wacom_config_descriptor, 
                   sizeof(qemu_wacom_config_descriptor));
            ret = sizeof(qemu_wacom_config_descriptor);
            break;
        case USB_DT_STRING:
            switch (value & 0xff) {
            case 0:
                /* language ids */
                data[0] = 4;
                data[1] = 3;
                data[2] = 0x09;
                data[3] = 0x04;
                ret = 4;
                break;
            case 1:
                /* serial number */
                ret = set_usb_string(data, "1");
                break;
            case 2:
		ret = set_usb_string(data, "Wacom PenPartner");
                break;
            case 3:
                /* vendor description */
                ret = set_usb_string(data, "QEMU " QEMU_VERSION);
                break;
            case 4:
                ret = set_usb_string(data, "Wacom Tablet");
                break;
            case 5:
                ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
                break;
            default:
                goto fail;
            }
            break;
        default:
            goto fail;
        }
        break;
    case DeviceRequest | USB_REQ_GET_CONFIGURATION:
        data[0] = 1;
        ret = 1;
        break;
    case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
        ret = 0;
        break;
    case DeviceRequest | USB_REQ_GET_INTERFACE:
        data[0] = 0;
        ret = 1;
        break;
    case DeviceOutRequest | USB_REQ_SET_INTERFACE:
        ret = 0;
        break;
    case WACOM_SET_REPORT:
        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_SET_IDLE:
        ret = 0;
        break;
    default:
    fail:
        ret = USB_RET_STALL;
        break;
    }
    return ret;
}

static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
{
    USBWacomState *s = (USBWacomState *) dev;
    int ret = 0;

    switch (p->pid) {
    case USB_TOKEN_IN:
        if (p->devep == 1) {
            if (s->mode == WACOM_MODE_HID)
                ret = usb_mouse_poll(s, p->data, p->len);
            else if (s->mode == WACOM_MODE_WACOM)
                ret = usb_wacom_poll(s, p->data, p->len);
            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;

    qemu_remove_mouse_event_handler(s->eh_entry);
    qemu_free(s);
}

USBDevice *usb_wacom_init(void)
{
    USBWacomState *s;

    s = qemu_mallocz(sizeof(USBWacomState));
    if (!s)
        return NULL;
    s->dev.speed = USB_SPEED_FULL;
    s->dev.handle_packet = usb_generic_handle_packet;

    s->dev.handle_reset = usb_wacom_handle_reset;
    s->dev.handle_control = usb_wacom_handle_control;
    s->dev.handle_data = usb_wacom_handle_data;
    s->dev.handle_destroy = usb_wacom_handle_destroy;

    pstrcpy(s->dev.devname, sizeof(s->dev.devname),
            "QEMU PenPartner Tablet");

    return (USBDevice *) s;
}
Commit	Line	Data
f6d2a316 AZ	1	/*
	2	* Wacom PenPartner USB tablet emulation.
	3	*
	4	* Copyright (c) 2006 Openedhand Ltd.
	5	* Author: Andrzej Zaborowski <[email protected]>
	6	*
	7	* Based on hw/usb-hid.c:
	8	* Copyright (c) 2005 Fabrice Bellard
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	24	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	26	* THE SOFTWARE.
	27	*/
	28	#include "vl.h"
	29
	30	/* Interface requests */
	31	#define WACOM_GET_REPORT 0x2101
	32	#define WACOM_SET_REPORT 0x2109
	33
	34	/* HID interface requests */
	35	#define HID_GET_REPORT 0xa101
	36	#define HID_GET_IDLE 0xa102
	37	#define HID_GET_PROTOCOL 0xa103
	38	#define HID_SET_IDLE 0x210a
	39	#define HID_SET_PROTOCOL 0x210b
	40
	41	typedef struct USBWacomState {
	42	USBDevice dev;
	43	QEMUPutMouseEntry *eh_entry;
	44	int dx, dy, dz, buttons_state;
	45	int x, y;
	46	int mouse_grabbed;
	47	enum {
	48	WACOM_MODE_HID = 1,
	49	WACOM_MODE_WACOM = 2,
	50	} mode;
	51	} USBWacomState;
	52
	53	static const uint8_t qemu_wacom_dev_descriptor[] = {
	54	0x12, /* u8 bLength; */
	55	0x01, /* u8 bDescriptorType; Device */
	56	0x10, 0x10, /* u16 bcdUSB; v1.10 */
	57
	58	0x00, /* u8 bDeviceClass; */
	59	0x00, /* u8 bDeviceSubClass; */
	60	0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */
	61	0x08, /* u8 bMaxPacketSize0; 8 Bytes */
	62
	63	0x6a, 0x05, /* u16 idVendor; */
	64	0x00, 0x00, /* u16 idProduct; */
65	0x10, 0x42, /* u16 bcdDevice */
66
67	0x01, /* u8 iManufacturer; */
68	0x02, /* u8 iProduct; */
69	0x00, /* u8 iSerialNumber; */
70	0x01, /* u8 bNumConfigurations; */
71	};
72
73	static const uint8_t qemu_wacom_config_descriptor[] = {
74	/* one configuration */
75	0x09, /* u8 bLength; */
76	0x02, /* u8 bDescriptorType; Configuration */
77	0x22, 0x00, /* u16 wTotalLength; */
78	0x01, /* u8 bNumInterfaces; (1) */
79	0x01, /* u8 bConfigurationValue; */
80	0x00, /* u8 iConfiguration; */
81	0x80, /* u8 bmAttributes;
82	Bit 7: must be set,
83	6: Self-powered,
84	5: Remote wakeup,
85	4..0: resvd */
86	40, /* u8 MaxPower; */
87
88	/* one interface */
89	0x09, /* u8 if_bLength; */
90	0x04, /* u8 if_bDescriptorType; Interface */
91	0x00, /* u8 if_bInterfaceNumber; */
92	0x00, /* u8 if_bAlternateSetting; */
93	0x01, /* u8 if_bNumEndpoints; */
94	0x03, /* u8 if_bInterfaceClass; HID */
95	0x01, /* u8 if_bInterfaceSubClass; Boot */
96	0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
97	0x00, /* u8 if_iInterface; */
98
99	/* HID descriptor */
100	0x09, /* u8 bLength; */
101	0x21, /* u8 bDescriptorType; */
102	0x01, 0x10, /* u16 HID_class */
103	0x00, /* u8 country_code */
104	0x01, /* u8 num_descriptors */
105	0x22, /* u8 type; Report */
106	0x6e, 0x00, /* u16 len */
107
108	/* one endpoint (status change endpoint) */
109	0x07, /* u8 ep_bLength; */
110	0x05, /* u8 ep_bDescriptorType; Endpoint */
111	0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */
112	0x03, /* u8 ep_bmAttributes; Interrupt */
113	0x08, 0x00, /* u16 ep_wMaxPacketSize; */
114	0x0a, /* u8 ep_bInterval; */
115	};
116
117	static void usb_mouse_event(void *opaque,
118	int dx1, int dy1, int dz1, int buttons_state)
119	{
120	USBWacomState *s = opaque;
121
122	s->dx += dx1;
123	s->dy += dy1;
124	s->dz += dz1;
125	s->buttons_state = buttons_state;
126	}
127
128	static void usb_wacom_event(void *opaque,
129	int x, int y, int dz, int buttons_state)
130	{
131	USBWacomState *s = opaque;
132
133	s->x = x;
134	s->y = y;
135	s->dz += dz;
136	s->buttons_state = buttons_state;
137	}
138
139	static inline int int_clamp(int val, int vmin, int vmax)
140	{
141	if (val < vmin)
142	return vmin;
143	else if (val > vmax)
144	return vmax;
145	else
146	return val;
147	}
148
149	static int usb_mouse_poll(USBWacomState s, uint8_t buf, int len)
150	{
151	int dx, dy, dz, b, l;
152
153	if (!s->mouse_grabbed) {
154	s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
155	"QEMU PenPartner tablet");
156	s->mouse_grabbed = 1;
157	}
158
159	dx = int_clamp(s->dx, -128, 127);
160	dy = int_clamp(s->dy, -128, 127);
161	dz = int_clamp(s->dz, -128, 127);
162
163	s->dx -= dx;
164	s->dy -= dy;
165	s->dz -= dz;
166
167	b = 0;
168	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
169	b \|= 0x01;
170	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
171	b \|= 0x02;
172	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
173	b \|= 0x04;
174
175	buf[0] = b;
176	buf[1] = dx;
177	buf[2] = dy;
178	l = 3;
179	if (len >= 4) {
180	buf[3] = dz;
181	l = 4;
182	}
183	return l;
184	}
185
186	static int usb_wacom_poll(USBWacomState s, uint8_t buf, int len)
187	{
188	int b;
189
190	if (!s->mouse_grabbed) {
191	s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
192	"QEMU PenPartner tablet");
193	s->mouse_grabbed = 1;
194	}
195
196	b = 0;
197	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
198	b \|= 0x01;
199	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
200	b \|= 0x02;
201	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
202	b \|= 0x04;
203
204	if (len < 7)
205	return 0;
206
207	buf[0] = s->mode;
208	buf[5] = 0x00;
209	if (b) {
210	buf[1] = s->x & 0xff;
211	buf[2] = s->x >> 8;
212	buf[3] = s->y & 0xff;
213	buf[4] = s->y >> 8;
214	buf[6] = 0;
215	} else {
216	buf[1] = 0;
217	buf[2] = 0;
218	buf[3] = 0;
219	buf[4] = 0;
220	buf[6] = (unsigned char) -127;
221	}
222
223	return 7;
224	}
225
226	static void usb_wacom_handle_reset(USBDevice *dev)
227	{
228	USBWacomState s = (USBWacomState ) dev;
229
230	s->dx = 0;
231	s->dy = 0;
232	s->dz = 0;
233	s->x = 0;
234	s->y = 0;
235	s->buttons_state = 0;
236	s->mode = WACOM_MODE_HID;
237	}
238
239	static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
240	int index, int length, uint8_t *data)
241	{
242	USBWacomState s = (USBWacomState ) dev;
243	int ret = 0;
244
245	switch (request) {
246	case DeviceRequest \| USB_REQ_GET_STATUS:
247	data[0] = (1 << USB_DEVICE_SELF_POWERED) \|
248	(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
249	data[1] = 0x00;
250	ret = 2;
251	break;
252	case DeviceOutRequest \| USB_REQ_CLEAR_FEATURE:
253	if (value == USB_DEVICE_REMOTE_WAKEUP) {
254	dev->remote_wakeup = 0;
255	} else {
256	goto fail;
257	}
258	ret = 0;
259	break;
260	case DeviceOutRequest \| USB_REQ_SET_FEATURE:
261	if (value == USB_DEVICE_REMOTE_WAKEUP) {
262	dev->remote_wakeup = 1;
263	} else {
264	goto fail;
265	}
266	ret = 0;
267	break;
268	case DeviceOutRequest \| USB_REQ_SET_ADDRESS:
269	dev->addr = value;
270	ret = 0;
271	break;
272	case DeviceRequest \| USB_REQ_GET_DESCRIPTOR:
273	switch (value >> 8) {
274	case USB_DT_DEVICE:
275	memcpy(data, qemu_wacom_dev_descriptor,
276	sizeof(qemu_wacom_dev_descriptor));
277	ret = sizeof(qemu_wacom_dev_descriptor);
278	break;
279	case USB_DT_CONFIG:
280	memcpy(data, qemu_wacom_config_descriptor,
281	sizeof(qemu_wacom_config_descriptor));
282	ret = sizeof(qemu_wacom_config_descriptor);
283	break;
284	case USB_DT_STRING:
285	switch (value & 0xff) {
286	case 0:
287	/* language ids */
288	data[0] = 4;
289	data[1] = 3;
290	data[2] = 0x09;
291	data[3] = 0x04;
292	ret = 4;
293	break;
294	case 1:
295	/* serial number */
296	ret = set_usb_string(data, "1");
297	break;
298	case 2:
299	ret = set_usb_string(data, "Wacom PenPartner");
300	break;
301	case 3:
302	/* vendor description */
303	ret = set_usb_string(data, "QEMU " QEMU_VERSION);
304	break;
305	case 4:
306	ret = set_usb_string(data, "Wacom Tablet");
307	break;
308	case 5:
309	ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
310	break;
311	default:
312	goto fail;
313	}
314	break;
315	default:
316	goto fail;
317	}
318	break;
319	case DeviceRequest \| USB_REQ_GET_CONFIGURATION:
320	data[0] = 1;
321	ret = 1;
322	break;
323	case DeviceOutRequest \| USB_REQ_SET_CONFIGURATION:
324	ret = 0;
325	break;
326	case DeviceRequest \| USB_REQ_GET_INTERFACE:
327	data[0] = 0;
328	ret = 1;
329	break;
330	case DeviceOutRequest \| USB_REQ_SET_INTERFACE:
331	ret = 0;
332	break;
333	case WACOM_SET_REPORT:
334	qemu_remove_mouse_event_handler(s->eh_entry);
335	s->mouse_grabbed = 0;
336	s->mode = data[0];
337	ret = 0;
338	break;
339	case WACOM_GET_REPORT:
340	data[0] = 0;
341	data[1] = s->mode;
342	ret = 2;
343	break;
344	/* USB HID requests */
345	case HID_GET_REPORT:
346	if (s->mode == WACOM_MODE_HID)
347	ret = usb_mouse_poll(s, data, length);
348	else if (s->mode == WACOM_MODE_WACOM)
349	ret = usb_wacom_poll(s, data, length);
350	break;
351	case HID_SET_IDLE:
352	ret = 0;
353	break;
354	default:
355	fail:
356	ret = USB_RET_STALL;
357	break;
358	}
359	return ret;
360	}
361
362	static int usb_wacom_handle_data(USBDevice dev, USBPacket p)
363	{
364	USBWacomState s = (USBWacomState ) dev;
365	int ret = 0;
366
367	switch (p->pid) {
368	case USB_TOKEN_IN:
369	if (p->devep == 1) {
370	if (s->mode == WACOM_MODE_HID)
371	ret = usb_mouse_poll(s, p->data, p->len);
372	else if (s->mode == WACOM_MODE_WACOM)
373	ret = usb_wacom_poll(s, p->data, p->len);
374	break;
375	}
376	/* Fall through. */
377	case USB_TOKEN_OUT:
378	default:
379	ret = USB_RET_STALL;
380	break;
381	}
382	return ret;
383	}
384
385	static void usb_wacom_handle_destroy(USBDevice *dev)
386	{
387	USBWacomState s = (USBWacomState ) dev;
388
389	qemu_remove_mouse_event_handler(s->eh_entry);
390	qemu_free(s);
391	}
392
393	USBDevice *usb_wacom_init(void)
394	{
395	USBWacomState *s;
396
397	s = qemu_mallocz(sizeof(USBWacomState));
398	if (!s)
399	return NULL;
400	s->dev.speed = USB_SPEED_FULL;
401	s->dev.handle_packet = usb_generic_handle_packet;
402
403	s->dev.handle_reset = usb_wacom_handle_reset;
404	s->dev.handle_control = usb_wacom_handle_control;
405	s->dev.handle_data = usb_wacom_handle_data;
406	s->dev.handle_destroy = usb_wacom_handle_destroy;
407
408	pstrcpy(s->dev.devname, sizeof(s->dev.devname),
409	"QEMU PenPartner Tablet");
410
411	return (USBDevice *) s;
412	}