/* * 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 "hw.h" #include "console.h" #include "usb.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)); 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; }