DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0/#1 ... x86_64
cc 8.3 [DragonFly] Release/2019-02-22
QEMU: qemu-system-x86_64 -enable-kvm, -device qemu-xhci,id=xhci0,p2=8,p3=8 (chip 0x000d1b36 rev 0x01)
xhci0 BAR: mem 0xfebd0000-0xfebd3fff (16KB, io_size=0x4000)
real register offsets: oper_off=0x40 runt_off=0x1000 door_off=0x2000
hw.usb.xhci.streams=0 (default), hw.usb.xhci.use_polling=0
ugen/* device nodes: 0600 root:operator (unpriv users cannot drive USB stack)