spice use usb device qemu part support

实现usb功能，在server端的具体操作：

1.安装libusb-1.0.9-rc3、usbredir-0.4.2，编译qemu时添加参数：--enable-usb-redir；

2.在server上目录/etc/qemu下编辑ich9-ehci-uhci.cfg文件：

 

  1 [device "ehci"]

  2 driver ="ich9-usb-ehci1"

  3 addr = "1d.7"

  4 multifunction = "on"

  5

  6 [device "uhci-1"]

  7 driver = "ich9-usb-uhci1"

  8 addr = "1d.0"

  9 multifunction = "on"

 10 masterbus = "ehci.0"

 11 firstport = "0"

 12

 13 [device "uhci-2"]

 14 driver = "ich9-usb-uhci2"

 15 addr = "1d.1"

 16 multifunction = "on"

 17 masterbus = "ehci.0"

 18 firstport = "2"

 19

 20 [device "uhci-3"]

 21 driver = "ich9-usb-uhci3"

 22 addr = "1d.2"

 23 multifunction = "on"

 24 masterbus = "ehci.0"

 25 firstport = "4"

 

 

3.在启动虚拟机的参数后面添加上：

  -readconfig /etc/qemu/ich9-ehci-uhci.cfg –chardev spicevmc,name=usbredir,id=usbredirchardev1 –device usb-redir,chardev=usbredirchardev1,id=usbredirdev1,debug=3

 

 

添加一个USB设备，下面是添加第二个USB设备：

-chardev spicevmc,name=usbredir,id=usbredirchardev2  -device usb-redir,chardev=usbredirchardev2,id=usbredirdev2,debug=3

如添加多个USB设备，仿照上面修改即可。

可参考文档：http://planet.spice-space.org/