how to force ucom driver to create /dev/cuaU? for some device?

[Vasil Dimov]

Hi all,

I have a device (GPS) that connects to the PC via the USB interface
and I have a software (comms/garmin-utils) that wishes to talk to the
device.

The problem is that the software expects a serial port device, not a USB
one.

The question is how can I make the ucom(4) create a cuaU? entry for my
device?

When I plug the device I get:

ehci_pcd: change=0x20
uhub_explore: status change hub=1 port=5
ehci after reset, status=0x00001801
ehci_disown: index=5 lowspeed=0
uhub_explore: status change hub=1 port=1
ehci_pcd: change=0x20
uhub_explore: status change hub=1 port=5
usbd_new_device bus=0xffffffff80ad7000 port=1 depth=1 speed=2
usbd_new_device: adding unit addr=2, rev=110, class=255, subclass=255, protocol=255, maxpacket=8, len=18, speed=2
usbd_new_device: new dev (addr 2), dev=0xffffff0000b06b00, parent=0xffffff0000aff400
usbd_probe_and_attach: trying device specific drivers
usbd_probe_and_attach: no device specific driver found
usbd_probe_and_attach: looping over 1 configurations
usbd_set_config_index: status=0x0001, error=NORMAL_COMPLETION
usbd_set_config_index: (addr 1) cno=2 attr=0xc0, selfpowered=1, power=0
usbd_set_config_index: set config 1
usbd_probe_and_attach: no interface drivers found
ugen0: vendor 0x091e product 0x0003, rev 1.10/0.01, addr 2
usbd_set_config_index: free old config
usbd_set_config_index: status=0x0001, error=NORMAL_COMPLETION
usbd_set_config_index: (addr 1) cno=2 attr=0xc0, selfpowered=1, power=0
usbd_set_config_index: set config 1

This (ofcourse) does not work:
# gardump -p /dev/ugen0
gardump: TIOCGETA: Invalid argument

ucom is loaded:
# kldstat -v |grep ucom
                85 ucom

-- 
Vasil Dimov