… FreeBSD on your one and only laptop...
Three controllers here, it seems:
Code:
% pciconf -lv | grep -E -e '(u|e|x)hci'
xhci0@pci0:0:20:0: class=0x0c0330 rev=0x04 hdr=0x00 vendor=0x8086 device=0x8c31 subvendor=0x103c subdevice=0x2255
ehci0@pci0:0:26:0: class=0x0c0320 rev=0x04 hdr=0x00 vendor=0x8086 device=0x8c2d subvendor=0x103c subdevice=0x2255
ehci1@pci0:0:29:0: class=0x0c0320 rev=0x04 hdr=0x00 vendor=0x8086 device=0x8c26 subvendor=0x103c subdevice=0x2255
%
I assume that one of the three could be passed through, although I don't use bhyve.