qemu-system-arm and USB

lakis70 · 07-07-2022, 11:31 PM

Hello
I want to ask how i can make the guest shown from host as USB peripheral (not to use the hosts usb devices). I want to virtual plug my guest and lsusb on host to list it. Also i want to run adbd on guest and adb on host.
QEMU is 6.2 and OS is Slackware 15. I try with versatilepb and virtio machines.

smallpond · 07-09-2022, 01:32 PM

QEMU already has host emulation, so should be able to support connecting your virtual device. Making it look like its an actual device to your host may require a driver on the host to create a virtual controller. When I looked around for such a beast I found https://sourceforge.net/projects/usb-vhci/ which seems to be an active project. I don't know what it would take to get it to talk to QEMU, though.

lakis70 · 07-11-2022, 06:27 PM

Quote:

Originally Posted by smallpond

I don't know what it would take to get it to talk to QEMU, though.

me too

lakis70 · 07-12-2022, 10:25 PM

I think one part of the problem is that the device tree doesn't mention the otg423 controller that why if i load the g_ether module dmesg says <<couldn't find an available UDC - added [g_ether] to list of pending drivers>>. Someone with more knowledge about? I will try the vexpress dts.