/* * QEMU USB HUB emulation * * 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"//#define DEBUG#define MAX_PORTS 8typedef struct USBHubPort {    USBPort port;    uint16_t wPortStatus;    uint16_t wPortChange;} USBHubPort;typedef struct USBHubState {    USBDevice dev;    int nb_ports;    USBHubPort ports[MAX_PORTS];} USBHubState;#define ClearHubFeature		(0x2000 | USB_REQ_CLEAR_FEATURE)#define ClearPortFeature	(0x2300 | USB_REQ_CLEAR_FEATURE)#define GetHubDescriptor	(0xa000 | USB_REQ_GET_DESCRIPTOR)#define GetHubStatus		(0xa000 | USB_REQ_GET_STATUS)#define GetPortStatus		(0xa300 | USB_REQ_GET_STATUS)#define SetHubFeature		(0x2000 | USB_REQ_SET_FEATURE)#define SetPortFeature		(0x2300 | USB_REQ_SET_FEATURE)#define PORT_STAT_CONNECTION	0x0001#define PORT_STAT_ENABLE	0x0002#define PORT_STAT_SUSPEND	0x0004#define PORT_STAT_OVERCURRENT	0x0008#define PORT_STAT_RESET		0x0010#define PORT_STAT_POWER		0x0100#define PORT_STAT_LOW_SPEED	0x0200#define PORT_STAT_HIGH_SPEED    0x0400#define PORT_STAT_TEST          0x0800#define PORT_STAT_INDICATOR     0x1000#define PORT_STAT_C_CONNECTION	0x0001#define PORT_STAT_C_ENABLE	0x0002#define PORT_STAT_C_SUSPEND	0x0004#define PORT_STAT_C_OVERCURRENT	0x0008#define PORT_STAT_C_RESET	0x0010#define PORT_CONNECTION	        0#define PORT_ENABLE		1#define PORT_SUSPEND		2#define PORT_OVERCURRENT	3#define PORT_RESET		4#define PORT_POWER		8#define PORT_LOWSPEED		9#define PORT_HIGHSPEED		10#define PORT_C_CONNECTION	16#define PORT_C_ENABLE		17#define PORT_C_SUSPEND		18#define PORT_C_OVERCURRENT	19#define PORT_C_RESET		20#define PORT_TEST               21#define PORT_INDICATOR          22/* same as Linux kernel root hubs */static const uint8_t qemu_hub_dev_descriptor[] = {	0x12,       /*  u8 bLength; */	0x01,       /*  u8 bDescriptorType; Device */	0x10, 0x01, /*  u16 bcdUSB; v1.1 */	0x09,	    /*  u8  bDeviceClass; HUB_CLASSCODE */	0x00,	    /*  u8  bDeviceSubClass; */	0x00,       /*  u8  bDeviceProtocol; [ low/full speeds only ] */	0x08,       /*  u8  bMaxPacketSize0; 8 Bytes */	0x00, 0x00, /*  u16 idVendor; */ 	0x00, 0x00, /*  u16 idProduct; */	0x01, 0x01, /*  u16 bcdDevice */	0x03,       /*  u8  iManufacturer; */	0x02,       /*  u8  iProduct; */	0x01,       /*  u8  iSerialNumber; */	0x01        /*  u8  bNumConfigurations; */};/* XXX: patch interrupt size */static const uint8_t qemu_hub_config_descriptor[] = {	/* one configuration */	0x09,       /*  u8  bLength; */	0x02,       /*  u8  bDescriptorType; Configuration */	0x19, 0x00, /*  u16 wTotalLength; */	0x01,       /*  u8  bNumInterfaces; (1) */	0x01,       /*  u8  bConfigurationValue; */	0x00,       /*  u8  iConfiguration; */	0xc0,       /*  u8  bmAttributes; 				 Bit 7: must be set,				     6: Self-powered,				     5: Remote wakeup,				     4..0: resvd */	0x00,       /*  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; */	0x09,       /*  u8  if_bInterfaceClass; HUB_CLASSCODE */	0x00,       /*  u8  if_bInterfaceSubClass; */	0x00,       /*  u8  if_bInterfaceProtocol; [usb1.1 or single tt] */	0x00,       /*  u8  if_iInterface; */     	/* 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 */ 	0x02, 0x00, /*  u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */	0xff        /*  u8  ep_bInterval; (255ms -- usb 2.0 spec) */};static const uint8_t qemu_hub_hub_descriptor[] ={	0x09,			/*  u8  bLength; */	0x29,			/*  u8  bDescriptorType; Hub-descriptor */	0x00,			/*  u8  bNbrPorts; (patched later) */	0x0a,			/* u16  wHubCharacteristics; */	0x00,			/*   (per-port OC, no power switching) */	0x01,			/*  u8  bPwrOn2pwrGood; 2ms */	0x00			/*  u8  bHubContrCurrent; 0 mA */        /* DeviceRemovable and PortPwrCtrlMask patched in later */};static void usb_hub_attach(USBPort *port1, USBDevice *dev){    USBHubState *s = port1->opaque;    USBHubPort *port = &s->ports[port1->index];        if (dev) {        if (port->port.dev)            usb_attach(port1, NULL);                port->wPortStatus |= PORT_STAT_CONNECTION;        port->wPortChange |= PORT_STAT_C_CONNECTION;        if (dev->speed == USB_SPEED_LOW)            port->wPortStatus |= PORT_STAT_LOW_SPEED;        else            port->wPortStatus &= ~PORT_STAT_LOW_SPEED;        port->port.dev = dev;    } else {        dev = port->port.dev;        if (dev) {            port->wPortStatus &= ~PORT_STAT_CONNECTION;            port->wPortChange |= PORT_STAT_C_CONNECTION;            if (port->wPortStatus & PORT_STAT_ENABLE) {                port->wPortStatus &= ~PORT_STAT_ENABLE;                port->wPortChange |= PORT_STAT_C_ENABLE;            }            port->port.dev = NULL;        }    }}static void usb_hub_handle_reset(USBDevice *dev){    /* XXX: do it */}static int usb_hub_handle_control(USBDevice *dev, int request, int value,                                  int index, int length, uint8_t *data){    USBHubState *s = (USBHubState *)dev;    int ret;    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 EndpointOutRequest | USB_REQ_CLEAR_FEATURE:        if (value == 0 && index != 0x81) { /* clear ep halt */            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_hub_dev_descriptor,                    sizeof(qemu_hub_dev_descriptor));            ret = sizeof(qemu_hub_dev_descriptor);            break;        case USB_DT_CONFIG:            memcpy(data, qemu_hub_config_descriptor,                    sizeof(qemu_hub_config_descriptor));            /* status change endpoint size based on number             * of ports */            data[22] = (s->nb_ports + 1 + 7) / 8;            ret = sizeof(qemu_hub_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, "314159");                break;            case 2:                /* product description */                ret = set_usb_string(data, "QEMU USB Hub");                break;            case 3: