Re: [Xen-users] Pass-through of non-USB input devices

[Jiri 'Ghormoon' Novak <ghormoon@xxxxxxxxx>]

Hi,

there is input-linux in upcoming qemu 2.6, but you don't likely have
that. The reason it was done is exactly that laptop keyboards are ps/2.
If you're OK wit compiling qemu 2.6.0-rc2, but I don't know if anyone
tried input-lionux on xen yet, I know some people on kvm (including me)

Gh.

Carl Schneider wrote:
> Hi,
>
> I am currently setting up a new laptop (x86_64) and want
> to pass the keyboard and mouse to a domU. Sadly,
> I noticed that they are attached via PS/2 (I think),
> and after searching for a while without finding a
> solution, I decided to ask here.
>
> So my question is: How do I pass devices to a domU,
> that do not have a USB-ID and are propably not attached via PCI,
> but are listed in /dev/input/ (and in the sysfs, of course).
>
> To be honest: I am not _that_ sure if the input
> devices are really attached via PS/2, as it looks like
> the LPC-Controller (speak: ISA-Bus) might be the device
> where they are attached to. But if I try to forward that
> PCI-Device, nothing happens (It normally does not even
> have a kernel module attached to), so I think this device
> does not attach the input devices to the system.
>
> I am using archlinux and compiled xen from source
> (release 4.6.1). I would not have a problem with
> applying a patch on my own.
> The device is a ThinkPad T460p with dedicated GPU. VT-d
> is working properly, as it can be seen in `xl dmesg` (Not supplied).
>
>
> One short off-topic question, as it is my first post here: Is the way of
> providing "big" outputs by pasting it in the text acceptable, or should
> these be supplied as an attachment?
>
>
> Thanks,
> Carl
>
>
>
> To supply some information about the device-structure:
>
> Relevant parts of `xl info`:
> machine                : x86_64
> hw_caps                :
> bfebfbff:2c100800:00000000:00007f00:77fafbbf:00000000:00000121:029c6fbf
> virt_caps              : hvm hvm_directio
> xen_version            : 4.6.1
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
> hvm-3.0-x86_32p hvm-3.0-x86_64
> platform_params        : virt_start=0xffff800000000000
> xen_commandline        : /xen-4.6.1.gz xsave=1 dom0_mem=4096M,max:4096M
> dom0_max_vcpus=1 dom0_vcpus_pin iommu=1
>
>
>
>
> # lspci -tv
> -[0000:00]-+-00.0  Intel Corporation Skylake Host Bridge/DRAM Registers
>            +-01.0-[01]--
>            +-01.2-[02]----00.0  NVIDIA Corporation GM108M [GeForce 940MX]
>            +-02.0  Intel Corporation Skylake Integrated Graphics
>            +-14.0  Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller
>            +-14.2  Intel Corporation Sunrise Point-H Thermal subsystem
>            +-16.0  Intel Corporation Sunrise Point-H CSME HECI #1
>            +-17.0  Intel Corporation Sunrise Point-H SATA Controller
> [AHCI mode]
>            +-1c.0-[03]----00.0  Intel Corporation Wireless 8260
>            +-1c.4-[04]----00.0  Realtek Semiconductor Co., Ltd. RTS522A
> PCI Express Card Reader
>            +-1f.0  Intel Corporation Sunrise Point-H LPC Controller
>            +-1f.2  Intel Corporation Sunrise Point-H PMC
>            +-1f.3  Intel Corporation Sunrise Point-H HD Audio
>            +-1f.4  Intel Corporation Sunrise Point-H SMBus
>            \-1f.6  Intel Corporation Ethernet Connection (2) I219-LM
>
>
> Relevant parts of /proc/bus/input/devices:
> I: Bus=0011 Vendor=0001 Product=0001 Version=ab54
> N: Name="AT Translated Set 2 keyboard"
> P: Phys=isa0060/serio0/input0
> S: Sysfs=/devices/platform/i8042/serio0/input/input0
> U: Uniq=
> H: Handlers=sysrq kbd leds event0
> B: PROP=0
> B: EV=120013
> B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
> B: MSC=10
> B: LED=7
>
> I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
> N: Name="SynPS/2 Synaptics TouchPad"
> P: Phys=isa0060/serio1/input0
> S: Sysfs=/devices/platform/i8042/serio1/input/input7
> U: Uniq=
> H: Handlers=event8 mouse0
> B: PROP=5
> B: EV=b
> B: KEY=e520 10000 0 0 0 0
> B: ABS=660800011000003
>
> I: Bus=0011 Vendor=0002 Product=000a Version=0000
> N: Name="TPPS/2 IBM TrackPoint"
> P: Phys=synaptics-pt/serio0/input0
> S: Sysfs=/devices/platform/i8042/serio1/serio2/input/input10
> U: Uniq=
> H: Handlers=event10 mouse1
> B: PROP=21
> B: EV=7
> B: KEY=70000 0 0 0 0
> B: REL=3
>
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