/* * QEMU USB HID devices *  * 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"/* HID interface requests */#define GET_REPORT   0xa101#define GET_IDLE     0xa102#define GET_PROTOCOL 0xa103#define SET_IDLE     0x210a#define SET_PROTOCOL 0x210b#define USB_MOUSE  1#define USB_TABLET 2typedef struct USBMouseState {    USBDevice dev;    int dx, dy, dz, buttons_state;    int x, y;    int kind;    int mouse_grabbed;    int status_changed;    QEMUPutMouseEntry *eh_entry;} USBMouseState;/* mostly the same values as the Bochs USB Mouse device */static const uint8_t qemu_mouse_dev_descriptor[] = {	0x12,       /*  u8 bLength; */	0x01,       /*  u8 bDescriptorType; Device */	0x10, 0x00, /*  u16 bcdUSB; v1.0 */	0x00,	    /*  u8  bDeviceClass; */	0x00,	    /*  u8  bDeviceSubClass; */	0x00,       /*  u8  bDeviceProtocol; [ low/full speeds only ] */	0x08,       /*  u8  bMaxPacketSize0; 8 Bytes */	0x27, 0x06, /*  u16 idVendor; */ 	0x01, 0x00, /*  u16 idProduct; */	0x00, 0x00, /*  u16 bcdDevice */	0x03,       /*  u8  iManufacturer; */	0x02,       /*  u8  iProduct; */	0x01,       /*  u8  iSerialNumber; */	0x01        /*  u8  bNumConfigurations; */};static const uint8_t qemu_mouse_config_descriptor[] = {	/* one configuration */	0x09,       /*  u8  bLength; */	0x02,       /*  u8  bDescriptorType; Configuration */	0x22, 0x00, /*  u16 wTotalLength; */	0x01,       /*  u8  bNumInterfaces; (1) */	0x01,       /*  u8  bConfigurationValue; */	0x04,       /*  u8  iConfiguration; */	0xa0,       /*  u8  bmAttributes; 				 Bit 7: must be set,				     6: Self-powered,				     5: Remote wakeup,				     4..0: resvd */	50,         /*  u8  MaxPower; */      	/* USB 1.1:	 * USB 2.0, single TT organization (mandatory):	 *	one interface, protocol 0	 *	 * USB 2.0, multiple TT organization (optional):	 *	two interfaces, protocols 1 (like single TT)	 *	and 2 (multiple TT mode) ... config is	 *	sometimes settable	 *	NOT IMPLEMENTED	 */	/* 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; */	0x01,       /*  u8  if_bInterfaceSubClass; */	0x02,       /*  u8  if_bInterfaceProtocol; [usb1.1 or single tt] */	0x05,       /*  u8  if_iInterface; */             /* HID descriptor */        0x09,        /*  u8  bLength; */        0x21,        /*  u8 bDescriptorType; */        0x01, 0x00,  /*  u16 HID_class */        0x00,        /*  u8 country_code */        0x01,        /*  u8 num_descriptors */        0x22,        /*  u8 type; Report */        50, 0,       /*  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 */ 	0x03, 0x00, /*  u16 ep_wMaxPacketSize; */	0x0a,       /*  u8  ep_bInterval; (255ms -- usb 2.0 spec) */};static const uint8_t qemu_tablet_config_descriptor[] = {	/* one configuration */	0x09,       /*  u8  bLength; */	0x02,       /*  u8  bDescriptorType; Configuration */	0x22, 0x00, /*  u16 wTotalLength; */	0x01,       /*  u8  bNumInterfaces; (1) */	0x01,       /*  u8  bConfigurationValue; */	0x04,       /*  u8  iConfiguration; */	0xa0,       /*  u8  bmAttributes; 				 Bit 7: must be set,				     6: Self-powered,				     5: Remote wakeup,				     4..0: resvd */	50,         /*  u8  MaxPower; */      	/* USB 1.1:	 * USB 2.0, single TT organization (mandatory):	 *	one interface, protocol 0	 *	 * USB 2.0, multiple TT organization (optional):	 *	two interfaces, protocols 1 (like single TT)	 *	and 2 (multiple TT mode) ... config is	 *	sometimes settable	 *	NOT IMPLEMENTED	 */	/* 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; */	0x01,       /*  u8  if_bInterfaceSubClass; */	0x02,       /*  u8  if_bInterfaceProtocol; [usb1.1 or single tt] */	0x05,       /*  u8  if_iInterface; */        /* HID descriptor */        0x09,        /*  u8  bLength; */        0x21,        /*  u8 bDescriptorType; */        0x01, 0x00,  /*  u16 HID_class */        0x00,        /*  u8 country_code */        0x01,        /*  u8 num_descriptors */        0x22,        /*  u8 type; Report */        74, 0,       /*  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; */	0x03,       /*  u8  ep_bInterval; (255ms -- usb 2.0 spec) */};static const uint8_t qemu_mouse_hid_report_descriptor[] = {    0x05, 0x01, 0x09, 0x02, 0xA1, 0x01, 0x09, 0x01,     0xA1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29, 0x03,    0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01,     0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81, 0x01,    0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x15, 0x81,     0x25, 0x7F, 0x75, 0x08, 0x95, 0x02, 0x81, 0x06,    0xC0, 0xC0,};static const uint8_t qemu_tablet_hid_report_descriptor[] = {        0x05, 0x01, /* Usage Page Generic Desktop */        0x09, 0x01, /* Usage Mouse */        0xA1, 0x01, /* Collection Application */        0x09, 0x01, /* Usage Pointer */        0xA1, 0x00, /* Collection Physical */        0x05, 0x09, /* Usage Page Button */        0x19, 0x01, /* Usage Minimum Button 1 */        0x29, 0x03, /* Usage Maximum Button 3 */        0x15, 0x00, /* Logical Minimum 0 */        0x25, 0x01, /* Logical Maximum 1 */        0x95, 0x03, /* Report Count 3 */        0x75, 0x01, /* Report Size 1 */        0x81, 0x02, /* Input (Data, Var, Abs) */        0x95, 0x01, /* Report Count 1 */        0x75, 0x05, /* Report Size 5 */        0x81, 0x01, /* Input (Cnst, Var, Abs) */        0x05, 0x01, /* Usage Page Generic Desktop */        0x09, 0x30, /* Usage X */        0x09, 0x31, /* Usage Y */        0x15, 0x00, /* Logical Minimum 0 */        0x26, 0xFF, 0x7F, /* Logical Maximum 0x7fff */        0x35, 0x00, /* Physical Minimum 0 */        0x46, 0xFE, 0x7F, /* Physical Maximum 0x7fff */        0x75, 0x10, /* Report Size 16 */        0x95, 0x02, /* Report Count 2 */        0x81, 0x02, /* Input (Data, Var, Abs) */        0x05, 0x01, /* Usage Page Generic Desktop */        0x09, 0x38, /* Usage Wheel */        0x15, 0x81, /* Logical Minimum -127 */        0x25, 0x7F, /* Logical Maximum 127 */        0x35, 0x00, /* Physical Minimum 0 (same as logical) */        0x45, 0x00, /* Physical Maximum 0 (same as logical) */        0x75, 0x08, /* Report Size 8 */        0x95, 0x01, /* Report Count 1 */        0x81, 0x02, /* Input (Data, Var, Rel) */        0xC0,       /* End Collection */        0xC0,       /* End Collection */};static int currentbutton = 0;typedef struct _mouseclick {    int button_state;    struct _mouseclick *next;} mouseclick; static mouseclick mousequeue[20];static mouseclick *head = mousequeue;static mouseclick *tail = mousequeue;static void usb_mouse_event(void *opaque,                            int dx1, int dy1, int dz1, int buttons_state){    USBMouseState *s = opaque;    if (s->status_changed == 1){        //A mouse event is lost        if (buttons_state != currentbutton && tail->next != head) {            //A left click event is lost: let's add it to the queue            //counter++;            tail->button_state = buttons_state;            tail = tail->next;        }    }    else {        s->buttons_state = buttons_state;    }    s->dx += dx1;    s->dy += dy1;    s->dz += dz1;    currentbutton = buttons_state;    s->status_changed = 1;}static void usb_tablet_event(void *opaque,			     int x, int y, int dz, int buttons_state){    USBMouseState *s = opaque;        if (s->status_changed == 1){        //A mouse event is lost        if (buttons_state != currentbutton && tail->next != head) {            //A left click event is lost: let's add it to the queue            //counter++;            tail->button_state = buttons_state;            tail = tail->next;        }    }    else {        s->buttons_state = buttons_state;    }    s->x = x;    s->y = y;    s->dz += dz;    currentbutton = buttons_state;    s->status_changed = 1;}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(USBMouseState *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 USB Mouse");	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_tablet_poll(USBMouseState *s, uint8_t *buf, int len){    int dz, b, l;