root / hw / usb-wacom.c @ 658788c5
History | View | Annotate | Download (11.7 kB)
1 |
/*
|
---|---|
2 |
* Wacom PenPartner USB tablet emulation.
|
3 |
*
|
4 |
* Copyright (c) 2006 Openedhand Ltd.
|
5 |
* Author: Andrzej Zaborowski <balrog@zabor.org>
|
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 "hw.h" |
29 |
#include "console.h" |
30 |
#include "usb.h" |
31 |
|
32 |
/* Interface requests */
|
33 |
#define WACOM_GET_REPORT 0x2101 |
34 |
#define WACOM_SET_REPORT 0x2109 |
35 |
|
36 |
/* HID interface requests */
|
37 |
#define HID_GET_REPORT 0xa101 |
38 |
#define HID_GET_IDLE 0xa102 |
39 |
#define HID_GET_PROTOCOL 0xa103 |
40 |
#define HID_SET_IDLE 0x210a |
41 |
#define HID_SET_PROTOCOL 0x210b |
42 |
|
43 |
typedef struct USBWacomState { |
44 |
USBDevice dev; |
45 |
QEMUPutMouseEntry *eh_entry; |
46 |
int dx, dy, dz, buttons_state;
|
47 |
int x, y;
|
48 |
int mouse_grabbed;
|
49 |
enum {
|
50 |
WACOM_MODE_HID = 1,
|
51 |
WACOM_MODE_WACOM = 2,
|
52 |
} mode; |
53 |
uint8_t idle; |
54 |
int changed;
|
55 |
} USBWacomState; |
56 |
|
57 |
static const uint8_t qemu_wacom_dev_descriptor[] = { |
58 |
0x12, /* u8 bLength; */ |
59 |
0x01, /* u8 bDescriptorType; Device */ |
60 |
0x10, 0x10, /* u16 bcdUSB; v1.10 */ |
61 |
|
62 |
0x00, /* u8 bDeviceClass; */ |
63 |
0x00, /* u8 bDeviceSubClass; */ |
64 |
0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
65 |
0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
66 |
|
67 |
0x6a, 0x05, /* u16 idVendor; */ |
68 |
0x00, 0x00, /* u16 idProduct; */ |
69 |
0x10, 0x42, /* u16 bcdDevice */ |
70 |
|
71 |
0x01, /* u8 iManufacturer; */ |
72 |
0x02, /* u8 iProduct; */ |
73 |
0x00, /* u8 iSerialNumber; */ |
74 |
0x01, /* u8 bNumConfigurations; */ |
75 |
}; |
76 |
|
77 |
static const uint8_t qemu_wacom_config_descriptor[] = { |
78 |
/* one configuration */
|
79 |
0x09, /* u8 bLength; */ |
80 |
0x02, /* u8 bDescriptorType; Configuration */ |
81 |
0x22, 0x00, /* u16 wTotalLength; */ |
82 |
0x01, /* u8 bNumInterfaces; (1) */ |
83 |
0x01, /* u8 bConfigurationValue; */ |
84 |
0x00, /* u8 iConfiguration; */ |
85 |
0x80, /* u8 bmAttributes; |
86 |
Bit 7: must be set,
|
87 |
6: Self-powered,
|
88 |
5: Remote wakeup,
|
89 |
4..0: resvd */
|
90 |
40, /* u8 MaxPower; */ |
91 |
|
92 |
/* one interface */
|
93 |
0x09, /* u8 if_bLength; */ |
94 |
0x04, /* u8 if_bDescriptorType; Interface */ |
95 |
0x00, /* u8 if_bInterfaceNumber; */ |
96 |
0x00, /* u8 if_bAlternateSetting; */ |
97 |
0x01, /* u8 if_bNumEndpoints; */ |
98 |
0x03, /* u8 if_bInterfaceClass; HID */ |
99 |
0x01, /* u8 if_bInterfaceSubClass; Boot */ |
100 |
0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
101 |
0x00, /* u8 if_iInterface; */ |
102 |
|
103 |
/* HID descriptor */
|
104 |
0x09, /* u8 bLength; */ |
105 |
0x21, /* u8 bDescriptorType; */ |
106 |
0x01, 0x10, /* u16 HID_class */ |
107 |
0x00, /* u8 country_code */ |
108 |
0x01, /* u8 num_descriptors */ |
109 |
0x22, /* u8 type; Report */ |
110 |
0x6e, 0x00, /* u16 len */ |
111 |
|
112 |
/* one endpoint (status change endpoint) */
|
113 |
0x07, /* u8 ep_bLength; */ |
114 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
115 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
116 |
0x03, /* u8 ep_bmAttributes; Interrupt */ |
117 |
0x08, 0x00, /* u16 ep_wMaxPacketSize; */ |
118 |
0x0a, /* u8 ep_bInterval; */ |
119 |
}; |
120 |
|
121 |
static void usb_mouse_event(void *opaque, |
122 |
int dx1, int dy1, int dz1, int buttons_state) |
123 |
{ |
124 |
USBWacomState *s = opaque; |
125 |
|
126 |
s->dx += dx1; |
127 |
s->dy += dy1; |
128 |
s->dz += dz1; |
129 |
s->buttons_state = buttons_state; |
130 |
s->changed = 1;
|
131 |
} |
132 |
|
133 |
static void usb_wacom_event(void *opaque, |
134 |
int x, int y, int dz, int buttons_state) |
135 |
{ |
136 |
USBWacomState *s = opaque; |
137 |
|
138 |
/* scale to Penpartner resolution */
|
139 |
s->x = (x * 5040 / 0x7FFF); |
140 |
s->y = (y * 3780 / 0x7FFF); |
141 |
s->dz += dz; |
142 |
s->buttons_state = buttons_state; |
143 |
s->changed = 1;
|
144 |
} |
145 |
|
146 |
static inline int int_clamp(int val, int vmin, int vmax) |
147 |
{ |
148 |
if (val < vmin)
|
149 |
return vmin;
|
150 |
else if (val > vmax) |
151 |
return vmax;
|
152 |
else
|
153 |
return val;
|
154 |
} |
155 |
|
156 |
static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len) |
157 |
{ |
158 |
int dx, dy, dz, b, l;
|
159 |
|
160 |
if (!s->mouse_grabbed) {
|
161 |
s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
|
162 |
"QEMU PenPartner tablet");
|
163 |
s->mouse_grabbed = 1;
|
164 |
} |
165 |
|
166 |
dx = int_clamp(s->dx, -128, 127); |
167 |
dy = int_clamp(s->dy, -128, 127); |
168 |
dz = int_clamp(s->dz, -128, 127); |
169 |
|
170 |
s->dx -= dx; |
171 |
s->dy -= dy; |
172 |
s->dz -= dz; |
173 |
|
174 |
b = 0;
|
175 |
if (s->buttons_state & MOUSE_EVENT_LBUTTON)
|
176 |
b |= 0x01;
|
177 |
if (s->buttons_state & MOUSE_EVENT_RBUTTON)
|
178 |
b |= 0x02;
|
179 |
if (s->buttons_state & MOUSE_EVENT_MBUTTON)
|
180 |
b |= 0x04;
|
181 |
|
182 |
buf[0] = b;
|
183 |
buf[1] = dx;
|
184 |
buf[2] = dy;
|
185 |
l = 3;
|
186 |
if (len >= 4) { |
187 |
buf[3] = dz;
|
188 |
l = 4;
|
189 |
} |
190 |
return l;
|
191 |
} |
192 |
|
193 |
static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len) |
194 |
{ |
195 |
int b;
|
196 |
|
197 |
if (!s->mouse_grabbed) {
|
198 |
s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
|
199 |
"QEMU PenPartner tablet");
|
200 |
s->mouse_grabbed = 1;
|
201 |
} |
202 |
|
203 |
b = 0;
|
204 |
if (s->buttons_state & MOUSE_EVENT_LBUTTON)
|
205 |
b |= 0x01;
|
206 |
if (s->buttons_state & MOUSE_EVENT_RBUTTON)
|
207 |
b |= 0x40;
|
208 |
if (s->buttons_state & MOUSE_EVENT_MBUTTON)
|
209 |
b |= 0x20; /* eraser */ |
210 |
|
211 |
if (len < 7) |
212 |
return 0; |
213 |
|
214 |
buf[0] = s->mode;
|
215 |
buf[5] = 0x00 | (b & 0xf0); |
216 |
buf[1] = s->x & 0xff; |
217 |
buf[2] = s->x >> 8; |
218 |
buf[3] = s->y & 0xff; |
219 |
buf[4] = s->y >> 8; |
220 |
if (b & 0x3f) { |
221 |
buf[6] = 0; |
222 |
} else {
|
223 |
buf[6] = (unsigned char) -127; |
224 |
} |
225 |
|
226 |
return 7; |
227 |
} |
228 |
|
229 |
static void usb_wacom_handle_reset(USBDevice *dev) |
230 |
{ |
231 |
USBWacomState *s = (USBWacomState *) dev; |
232 |
|
233 |
s->dx = 0;
|
234 |
s->dy = 0;
|
235 |
s->dz = 0;
|
236 |
s->x = 0;
|
237 |
s->y = 0;
|
238 |
s->buttons_state = 0;
|
239 |
s->mode = WACOM_MODE_HID; |
240 |
} |
241 |
|
242 |
static int usb_wacom_handle_control(USBDevice *dev, int request, int value, |
243 |
int index, int length, uint8_t *data) |
244 |
{ |
245 |
USBWacomState *s = (USBWacomState *) dev; |
246 |
int ret = 0; |
247 |
|
248 |
switch (request) {
|
249 |
case DeviceRequest | USB_REQ_GET_STATUS:
|
250 |
data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
251 |
(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
252 |
data[1] = 0x00; |
253 |
ret = 2;
|
254 |
break;
|
255 |
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
256 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
257 |
dev->remote_wakeup = 0;
|
258 |
} else {
|
259 |
goto fail;
|
260 |
} |
261 |
ret = 0;
|
262 |
break;
|
263 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
264 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
265 |
dev->remote_wakeup = 1;
|
266 |
} else {
|
267 |
goto fail;
|
268 |
} |
269 |
ret = 0;
|
270 |
break;
|
271 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
272 |
dev->addr = value; |
273 |
ret = 0;
|
274 |
break;
|
275 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
276 |
switch (value >> 8) { |
277 |
case USB_DT_DEVICE:
|
278 |
memcpy(data, qemu_wacom_dev_descriptor, |
279 |
sizeof(qemu_wacom_dev_descriptor));
|
280 |
ret = sizeof(qemu_wacom_dev_descriptor);
|
281 |
break;
|
282 |
case USB_DT_CONFIG:
|
283 |
memcpy(data, qemu_wacom_config_descriptor, |
284 |
sizeof(qemu_wacom_config_descriptor));
|
285 |
ret = sizeof(qemu_wacom_config_descriptor);
|
286 |
break;
|
287 |
case USB_DT_STRING:
|
288 |
switch (value & 0xff) { |
289 |
case 0: |
290 |
/* language ids */
|
291 |
data[0] = 4; |
292 |
data[1] = 3; |
293 |
data[2] = 0x09; |
294 |
data[3] = 0x04; |
295 |
ret = 4;
|
296 |
break;
|
297 |
case 1: |
298 |
/* serial number */
|
299 |
ret = set_usb_string(data, "1");
|
300 |
break;
|
301 |
case 2: |
302 |
ret = set_usb_string(data, "Wacom PenPartner");
|
303 |
break;
|
304 |
case 3: |
305 |
/* vendor description */
|
306 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
307 |
break;
|
308 |
case 4: |
309 |
ret = set_usb_string(data, "Wacom Tablet");
|
310 |
break;
|
311 |
case 5: |
312 |
ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
|
313 |
break;
|
314 |
default:
|
315 |
goto fail;
|
316 |
} |
317 |
break;
|
318 |
default:
|
319 |
goto fail;
|
320 |
} |
321 |
break;
|
322 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
323 |
data[0] = 1; |
324 |
ret = 1;
|
325 |
break;
|
326 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
327 |
ret = 0;
|
328 |
break;
|
329 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
330 |
data[0] = 0; |
331 |
ret = 1;
|
332 |
break;
|
333 |
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
334 |
ret = 0;
|
335 |
break;
|
336 |
case WACOM_SET_REPORT:
|
337 |
qemu_remove_mouse_event_handler(s->eh_entry); |
338 |
s->mouse_grabbed = 0;
|
339 |
s->mode = data[0];
|
340 |
ret = 0;
|
341 |
break;
|
342 |
case WACOM_GET_REPORT:
|
343 |
data[0] = 0; |
344 |
data[1] = s->mode;
|
345 |
ret = 2;
|
346 |
break;
|
347 |
/* USB HID requests */
|
348 |
case HID_GET_REPORT:
|
349 |
if (s->mode == WACOM_MODE_HID)
|
350 |
ret = usb_mouse_poll(s, data, length); |
351 |
else if (s->mode == WACOM_MODE_WACOM) |
352 |
ret = usb_wacom_poll(s, data, length); |
353 |
break;
|
354 |
case HID_GET_IDLE:
|
355 |
ret = 1;
|
356 |
data[0] = s->idle;
|
357 |
break;
|
358 |
case HID_SET_IDLE:
|
359 |
s->idle = (uint8_t) (value >> 8);
|
360 |
ret = 0;
|
361 |
break;
|
362 |
default:
|
363 |
fail:
|
364 |
ret = USB_RET_STALL; |
365 |
break;
|
366 |
} |
367 |
return ret;
|
368 |
} |
369 |
|
370 |
static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p) |
371 |
{ |
372 |
USBWacomState *s = (USBWacomState *) dev; |
373 |
int ret = 0; |
374 |
|
375 |
switch (p->pid) {
|
376 |
case USB_TOKEN_IN:
|
377 |
if (p->devep == 1) { |
378 |
if (!(s->changed || s->idle))
|
379 |
return USB_RET_NAK;
|
380 |
s->changed = 0;
|
381 |
if (s->mode == WACOM_MODE_HID)
|
382 |
ret = usb_mouse_poll(s, p->data, p->len); |
383 |
else if (s->mode == WACOM_MODE_WACOM) |
384 |
ret = usb_wacom_poll(s, p->data, p->len); |
385 |
break;
|
386 |
} |
387 |
/* Fall through. */
|
388 |
case USB_TOKEN_OUT:
|
389 |
default:
|
390 |
ret = USB_RET_STALL; |
391 |
break;
|
392 |
} |
393 |
return ret;
|
394 |
} |
395 |
|
396 |
static void usb_wacom_handle_destroy(USBDevice *dev) |
397 |
{ |
398 |
USBWacomState *s = (USBWacomState *) dev; |
399 |
|
400 |
qemu_remove_mouse_event_handler(s->eh_entry); |
401 |
} |
402 |
|
403 |
static int usb_wacom_initfn(USBDevice *dev) |
404 |
{ |
405 |
USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev); |
406 |
s->dev.speed = USB_SPEED_FULL; |
407 |
s->changed = 1;
|
408 |
return 0; |
409 |
} |
410 |
|
411 |
static struct USBDeviceInfo wacom_info = { |
412 |
.qdev.name = "QEMU PenPartner Tablet",
|
413 |
.qdev.alias = "wacom-tablet",
|
414 |
.usbdevice_name = "wacom-tablet",
|
415 |
.qdev.size = sizeof(USBWacomState),
|
416 |
.init = usb_wacom_initfn, |
417 |
.handle_packet = usb_generic_handle_packet, |
418 |
.handle_reset = usb_wacom_handle_reset, |
419 |
.handle_control = usb_wacom_handle_control, |
420 |
.handle_data = usb_wacom_handle_data, |
421 |
.handle_destroy = usb_wacom_handle_destroy, |
422 |
}; |
423 |
|
424 |
static void usb_wacom_register_devices(void) |
425 |
{ |
426 |
usb_qdev_register(&wacom_info); |
427 |
} |
428 |
device_init(usb_wacom_register_devices) |