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1.1 root 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 "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;
1.1.1.3 ! root 53: uint8_t idle;
! 54: int changed;
1.1 root 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;
1.1.1.3 ! root 130: s->changed = 1;
1.1 root 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:
1.1.1.3 ! root 138: /* scale to Penpartner resolution */
! 139: s->x = (x * 5040 / 0x7FFF);
! 140: s->y = (y * 3780 / 0x7FFF);
1.1 root 141: s->dz += dz;
142: s->buttons_state = buttons_state;
1.1.1.3 ! root 143: s->changed = 1;
1.1 root 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)
1.1.1.3 ! root 207: b |= 0x40;
1.1 root 208: if (s->buttons_state & MOUSE_EVENT_MBUTTON)
1.1.1.3 ! root 209: b |= 0x20; /* eraser */
1.1 root 210:
211: if (len < 7)
212: return 0;
213:
214: buf[0] = s->mode;
1.1.1.3 ! root 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) {
1.1 root 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;
1.1.1.3 ! root 354: case HID_GET_IDLE:
! 355: ret = 1;
! 356: data[0] = s->idle;
! 357: break;
1.1 root 358: case HID_SET_IDLE:
1.1.1.3 ! root 359: s->idle = (uint8_t) (value >> 8);
1.1 root 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) {
1.1.1.3 ! root 378: if (!(s->changed || s->idle))
! 379: return USB_RET_NAK;
! 380: s->changed = 0;
1.1 root 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:
1.1.1.3 ! root 403: static int usb_wacom_initfn(USBDevice *dev)
1.1 root 404: {
1.1.1.3 ! root 405: USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
1.1 root 406: s->dev.speed = USB_SPEED_FULL;
1.1.1.3 ! root 407: s->changed = 1;
! 408: return 0;
! 409: }
1.1 root 410:
1.1.1.3 ! root 411: static struct USBDeviceInfo wacom_info = {
! 412: .product_desc = "QEMU PenPartner Tablet",
! 413: .qdev.name = "usb-wacom-tablet",
! 414: .qdev.desc = "QEMU PenPartner Tablet",
! 415: .usbdevice_name = "wacom-tablet",
! 416: .qdev.size = sizeof(USBWacomState),
! 417: .init = usb_wacom_initfn,
! 418: .handle_packet = usb_generic_handle_packet,
! 419: .handle_reset = usb_wacom_handle_reset,
! 420: .handle_control = usb_wacom_handle_control,
! 421: .handle_data = usb_wacom_handle_data,
! 422: .handle_destroy = usb_wacom_handle_destroy,
! 423: };
1.1 root 424:
1.1.1.3 ! root 425: static void usb_wacom_register_devices(void)
! 426: {
! 427: usb_qdev_register(&wacom_info);
1.1 root 428: }
1.1.1.3 ! root 429: device_init(usb_wacom_register_devices)
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