diff --git a/hw/usb-hub.c b/hw/usb-hub.c
new file mode 100644
index 0000000..97c3d05
--- /dev/null
+++ b/hw/usb-hub.c
@@ -0,0 +1,554 @@
+/*
+ * 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 "qemu-common.h"
+#include "usb.h"
+
+//#define DEBUG
+
+#define MAX_PORTS 8
+
+typedef 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[] =
+{
+	0x00,			/*  u8  bLength; patched in later */
+	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;
+        /* send the attach message */
+        usb_send_msg(dev, USB_MSG_ATTACH);
+    } 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;
+            }
+            /* send the detach message */
+            usb_send_msg(dev, USB_MSG_DETACH);
+            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:
+                /* vendor description */
+                ret = set_usb_string(data, "QEMU " QEMU_VERSION);
+                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;
+        /* usb specific requests */
+    case GetHubStatus:
+        data[0] = 0;
+        data[1] = 0;
+        data[2] = 0;
+        data[3] = 0;
+        ret = 4;
+        break;
+    case GetPortStatus:
+        {
+            unsigned int n = index - 1;
+            USBHubPort *port;
+            if (n >= s->nb_ports)
+                goto fail;
+            port = &s->ports[n];
+            data[0] = port->wPortStatus;
+            data[1] = port->wPortStatus >> 8;
+            data[2] = port->wPortChange;
+            data[3] = port->wPortChange >> 8;
+            ret = 4;
+        }
+        break;
+    case SetHubFeature:
+    case ClearHubFeature:
+        if (value == 0 || value == 1) {
+        } else {
+            goto fail;
+        }
+        ret = 0;
+        break;
+    case SetPortFeature:
+        {
+            unsigned int n = index - 1;
+            USBHubPort *port;
+            USBDevice *dev;
+            if (n >= s->nb_ports)
+                goto fail;
+            port = &s->ports[n];
+            dev = port->port.dev;
+            switch(value) {
+            case PORT_SUSPEND:
+                port->wPortStatus |= PORT_STAT_SUSPEND;
+                break;
+            case PORT_RESET:
+                if (dev) {
+                    usb_send_msg(dev, USB_MSG_RESET);
+                    port->wPortChange |= PORT_STAT_C_RESET;
+                    /* set enable bit */
+                    port->wPortStatus |= PORT_STAT_ENABLE;
+                }
+                break;
+            case PORT_POWER:
+                break;
+            default:
+                goto fail;
+            }
+            ret = 0;
+        }
+        break;
+    case ClearPortFeature:
+        {
+            unsigned int n = index - 1;
+            USBHubPort *port;
+            USBDevice *dev;
+            if (n >= s->nb_ports)
+                goto fail;
+            port = &s->ports[n];
+            dev = port->port.dev;
+            switch(value) {
+            case PORT_ENABLE:
+                port->wPortStatus &= ~PORT_STAT_ENABLE;
+                break;
+            case PORT_C_ENABLE:
+                port->wPortChange &= ~PORT_STAT_C_ENABLE;
+                break;
+            case PORT_SUSPEND:
+                port->wPortStatus &= ~PORT_STAT_SUSPEND;
+                break;
+            case PORT_C_SUSPEND:
+                port->wPortChange &= ~PORT_STAT_C_SUSPEND;
+                break;
+            case PORT_C_CONNECTION:
+                port->wPortChange &= ~PORT_STAT_C_CONNECTION;
+                break;
+            case PORT_C_OVERCURRENT:
+                port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
+                break;
+            case PORT_C_RESET:
+                port->wPortChange &= ~PORT_STAT_C_RESET;
+                break;
+            default:
+                goto fail;
+            }
+            ret = 0;
+        }
+        break;
+    case GetHubDescriptor:
+        {
+            unsigned int n, limit, var_hub_size = 0;
+            memcpy(data, qemu_hub_hub_descriptor,
+                   sizeof(qemu_hub_hub_descriptor));
+            data[2] = s->nb_ports;
+
+            /* fill DeviceRemovable bits */
+            limit = ((s->nb_ports + 1 + 7) / 8) + 7;
+            for (n = 7; n < limit; n++) {
+                data[n] = 0x00;
+                var_hub_size++;
+            }
+
+            /* fill PortPwrCtrlMask bits */
+            limit = limit + ((s->nb_ports + 7) / 8);
+            for (;n < limit; n++) {
+                data[n] = 0xff;
+                var_hub_size++;
+            }
+
+            ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
+            data[0] = ret;
+            break;
+        }
+    default:
+    fail:
+        ret = USB_RET_STALL;
+        break;
+    }
+    return ret;
+}
+
+static int usb_hub_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBHubState *s = (USBHubState *)dev;
+    int ret;
+
+    switch(p->pid) {
+    case USB_TOKEN_IN:
+        if (p->devep == 1) {
+            USBHubPort *port;
+            unsigned int status;
+            int i, n;
+            n = (s->nb_ports + 1 + 7) / 8;
+            if (p->len == 1) { /* FreeBSD workaround */
+                n = 1;
+            } else if (n > p->len) {
+                return USB_RET_BABBLE;
+            }
+            status = 0;
+            for(i = 0; i < s->nb_ports; i++) {
+                port = &s->ports[i];
+                if (port->wPortChange)
+                    status |= (1 << (i + 1));
+            }
+            if (status != 0) {
+                for(i = 0; i < n; i++) {
+                    p->data[i] = status >> (8 * i);
+                }
+                ret = n;
+            } else {
+                ret = USB_RET_NAK; /* usb11 11.13.1 */
+            }
+        } else {
+            goto fail;
+        }
+        break;
+    case USB_TOKEN_OUT:
+    default:
+    fail:
+        ret = USB_RET_STALL;
+        break;
+    }
+    return ret;
+}
+
+static int usb_hub_broadcast_packet(USBHubState *s, USBPacket *p)
+{
+    USBHubPort *port;
+    USBDevice *dev;
+    int i, ret;
+
+    for(i = 0; i < s->nb_ports; i++) {
+        port = &s->ports[i];
+        dev = port->port.dev;
+        if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
+            ret = dev->handle_packet(dev, p);
+            if (ret != USB_RET_NODEV) {
+                return ret;
+            }
+        }
+    }
+    return USB_RET_NODEV;
+}
+
+static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p)
+{
+    USBHubState *s = (USBHubState *)dev;
+
+#if defined(DEBUG) && 0
+    printf("usb_hub: pid=0x%x\n", pid);
+#endif
+    if (dev->state == USB_STATE_DEFAULT &&
+        dev->addr != 0 &&
+        p->devaddr != dev->addr &&
+        (p->pid == USB_TOKEN_SETUP ||
+         p->pid == USB_TOKEN_OUT ||
+         p->pid == USB_TOKEN_IN)) {
+        /* broadcast the packet to the devices */
+        return usb_hub_broadcast_packet(s, p);
+    }
+    return usb_generic_handle_packet(dev, p);
+}
+
+static void usb_hub_handle_destroy(USBDevice *dev)
+{
+    USBHubState *s = (USBHubState *)dev;
+
+    qemu_free(s);
+}
+
+USBDevice *usb_hub_init(int nb_ports)
+{
+    USBHubState *s;
+    USBHubPort *port;
+    int i;
+
+    if (nb_ports > MAX_PORTS)
+        return NULL;
+    s = qemu_mallocz(sizeof(USBHubState));
+    if (!s)
+        return NULL;
+    s->dev.speed = USB_SPEED_FULL;
+    s->dev.handle_packet = usb_hub_handle_packet;
+
+    /* generic USB device init */
+    s->dev.handle_reset = usb_hub_handle_reset;
+    s->dev.handle_control = usb_hub_handle_control;
+    s->dev.handle_data = usb_hub_handle_data;
+    s->dev.handle_destroy = usb_hub_handle_destroy;
+
+    pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Hub");
+
+    s->nb_ports = nb_ports;
+    for(i = 0; i < s->nb_ports; i++) {
+        port = &s->ports[i];
+        qemu_register_usb_port(&port->port, s, i, usb_hub_attach);
+        port->wPortStatus = PORT_STAT_POWER;
+        port->wPortChange = 0;
+    }
+    return (USBDevice *)s;
+}