--- /dev/null
+/*
+ * 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 "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;
+}
projects / mirror_qemu.git / commitdiff