| /* |
| * 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; |
| } |
