Re: [Qemu-devel] Asking about USB for QEMU

[Frederic Konrad]

Hi,

If I understand right:
You want to run a zynq qemu on a centos host?

On 02/09/2017 09:25 AM, Wojciech Zebrowski wrote:
> Hi
> 
> I try connect my host linux centos USB to Qemu for Xilinx Zynq solution.
> I do following step :
> 1.Check usb vendor id , product id: lsusb
> 
> 
> 
> 
> *Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubBus 002
> Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hubBus 003 Device 001:
> ID 1d6b:0002 Linux Foundation 2.0 root hubBus 004 Device 001: ID 1d6b:0003
> Linux Foundation 3.0 root hub*
> 
> 2. I start Qemu with switch :
> 
> *-usbdevice host:<VendorID>:<ProductID>*
> 
> *-usbdevice host:1d6b:0002*
> 
>  3. On Centos Host computer where Xilinx Qemu is started , i've error as :
> 
> *No 'PCI' bus found for device 'usb-ehci'*

It is highly probable that the --usbdevice command try to create a
usb-ehci device and it doesn't find any PCI bus on the machine you
choose.

> 
> What is incorrect with my command or system configuration ?
> 
> 4. I check my motherboard bridge as following:
> 
> *qemu-system-x86_64 -device help |& grep usb.*hci*

Then here I don't get it. Why are you using qemu-system-x86_64?
It will be approximately the same for qemu-system-arm though.
Only there is probably no PCI bus where to connect them.

Can you give the complete command you are using?

Fred

> 
> *name "ich9-usb-ehci1", bus PCI name *
> 
> *"ich9-usb-ehci2", bus PCI name *
> 
> *"ich9-usb-uhci1", bus PCI name *
> 
> *"ich9-usb-uhci2", bus PCI name *
> 
> *"ich9-usb-uhci3", bus PCI name *
> 
> *"ich9-usb-uhci4", bus PCI name *
> 
> *"ich9-usb-uhci5", bus PCI name *
> 
> *"ich9-usb-uhci6", bus PCI name *
> 
> *"nec-usb-xhci", bus PCI name *
> 
> *"piix3-usb-uhci", bus PCI name *
> 
> *"piix4-usb-uhci", bus PCI name *
> 
> *"usb-ehci", bus PCI name *
> 
> *"vt82c686b-usb-uhci", bus PCI*
> 
> 
> *Any advice for check ?*
> 
> 
> Best regards :
> 
> Wojciech Zebrowski
>