Message-ID: <5891f0d5-8d51-9da5-7663-718f301490b1@molgen.mpg.de>
Date:   Thu, 13 Jan 2022 23:20:05 +0100
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Subject: How to pass through USB Bluetooth wireless interface to QEMU?
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From:   Paul Menzel <pmenzel@molgen.mpg.de>
To:     linux-bluetooth@vger.kernel.org
References: <331ae35c-7d48-46fc-c4ae-1e60cb0f3378@molgen.mpg.de>
In-Reply-To: <331ae35c-7d48-46fc-c4ae-1e60cb0f3378@molgen.mpg.de>
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[Fixed references]


Am 13.01.22 um 23:18 schrieb Paul Menzel:
> Dear Linux folks,
> 
> 
> To debug the issue with file transfers to the Nokia N9 [1], I would like 
> to pass through the USB Bluetooth wireless to QEMU.
> 
>      $ lsusb
>      Bus 001 Device 004: ID 1bcf:28ae Sunplus Innovation Technology Inc. 
> Laptop Integrated Webcam HD
>      Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bluetooth wireless 
> interface
>      Bus 001 Device 002: ID 8087:8001 Intel Corp. Integrated Hub
>      Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>      Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>      Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>      $ ls -ld /dev/bus/usb/001/003
>      crw-rw-rw- 1 root root 189, 2 13. Jan 23:05 /dev/bus/usb/001/003
> 
> Then following Leif’s article *QEMU USB host device pass-through* [2], I 
> run
> 
>      $ qemu-system-x86_64 -version
>      QEMU emulator version 6.2.0 (Debian 1:6.2+dfsg-1)
>      Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project 
> developers
>      $ sudo qemu-system-x86_64 -cpu host -m 2G -enable-kvm -usb -device 
> usb-host,vendorid=0x8087,productid=0x0a2a -hda /dev/shm/debian-64.img 
> -net nic -net user,hostfwd=tcp::22223-:22
> 
> (`-device usb-host,hostbus=1,hostport=3` did *not* work for me.)
> 
> In QEMU with *linux-image-5.15.0-2-amd64* 5.15.5-2 and *bluez* 5.62-2 
> the device is now detected, but bluetoothctl does not detect the 
> controller. (Starting QEMU as root does not make a difference.)
> 
>      # lsusb
>      Bus 001 Device 002: ID 8087:0a2a Intel Corp. Bluetooth wireless 
> interface
>      Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>      # lsusb -t
>      /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
>          |__ Port 1: Dev 2, If 0, Class=Wireless, Driver=btusb, 12M
>          |__ Port 1: Dev 2, If 1, Class=Wireless, Driver=btusb, 12M
> 
>      # bluetoothctl
>      Agent registered
>      [bluetooth]# list
>      [bluetooth]#
> 
>      # systemctl status bluetooth
>      ● bluetooth.service - Bluetooth service
>           Loaded: loaded (/lib/systemd/system/bluetooth.service; 
> enabled; vendor preset: enabled)
>           Active: active (running) since Thu 2022-01-13 23:05:25 CET; 
> 6min ago
>             Docs: man:bluetoothd(8)
>         Main PID: 400 (bluetoothd)
>           Status: "Running"
>            Tasks: 1 (limit: 2326)
>           Memory: 4.4M
>              CPU: 24ms
>           CGroup: /system.slice/bluetooth.service
>                   └─400 /usr/libexec/bluetooth/bluetoothd
> 
>      Jan 13 23:05:25 qemu systemd[1]: Starting Bluetooth service...
>      Jan 13 23:05:25 qemu bluetoothd[400]: Bluetooth daemon 5.62
>      Jan 13 23:05:25 qemu systemd[1]: Started Bluetooth service.
>      Jan 13 23:05:25 qemu bluetoothd[400]: Starting SDP server
>      Jan 13 23:05:25 qemu bluetoothd[400]: Bluetooth management 
> interface 1.21 initialized
> 
> Linux in QEMU logs:
> 
> 
>      # dmesg | grep -e Bluetooth -e hci0
>      [    4.385414] Bluetooth: Core ver 2.22
>      [    4.385453] Bluetooth: HCI device and connection manager 
> initialized
>      [    4.385741] Bluetooth: HCI socket layer initialized
>      [    4.385744] Bluetooth: L2CAP socket layer initialized
>      [    4.385751] Bluetooth: SCO socket layer initialized
>      [    4.593802] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
>      [    4.593806] Bluetooth: BNEP filters: protocol multicast
>      [    4.593809] Bluetooth: BNEP socket layer initialized
>      [    6.544261] Bluetooth: hci0: Reading Intel version command 
> failed (-110)
>      [    6.544310] Bluetooth: hci0: command tx timeout
> 
> The firmware is installed:
> 
>      # ls /lib/firmware/intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
>      /lib/firmware/intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
> 
> Do you have an idea, how to get it working?
> 
> 
> Kind regards,
> 
> Paul


[1]: 
https://lore.kernel.org/linux-bluetooth/a93c0fa7-7b84-6aea-265b-c913e0c84678@molgen.mpg.de/
[2]: https://station.eciton.net/qemu-usb-host-device-pass-through.html