[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] What is the current state of the various usb implementa
|
From: |
Gerd Hoffmann |
|
Subject: |
Re: [Qemu-devel] What is the current state of the various usb implementations? |
|
Date: |
Tue, 11 Dec 2012 11:05:04 +0100 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.11) Gecko/20121116 Thunderbird/10.0.11 |
On 12/10/12 17:38, address@hidden wrote:
> Hello,
>
> I sent this to qemu-discuss a week ago and got no responses, so I'm trying
> here.
>
> Looking at `qemu-kvm -device ?`, there seem to be multiple usb
> implementations:
> ich9-usb-uhci2
> ich9-usb-uhci3
> ich9-usb-uhci1
> piix3-usb-uhci
> piix4-usb-uhci
> vt82c686b-usb-uhci
These are all UHCI, just variants with different pci ids for the
different chipsets we are emulating. USB 1.1. Stable.
> ich9-usb-ehci1
> usb-ehci
Likewise these basially differ in the pci id only. USB 2.0. Needs
UHCI/OHCI companion controllers for USB 1.1 support (see
docs/ich9-ehci-uhci.cfg). Stable.
> nec-usb-xhci
XHCI. USB 3.0. Mostly stable. Has seen less testing that the others
though, both because it is the youngest code base and because guest
support isn't that good.
cheers,
Gerd