On Thursday 30 April 2009 12:58:36 Hans Petter Selasky wrote: > On Thursday 30 April 2009, Milan Obuch wrote: > > Hi, > > > > I have HUAWEI 3g usb modem. It works with u3g from current. There is > > however one thing I did not get working yet. > > > > When device attaches, it is added into tree as u3gN, devd event is sent. > > It is easily matched with 'device-name "u3g[0-9]"' clause in devd.conf. I > > can start ppp automatically and it works well, given no other USB serial > > device is present. > > > > If another USB serial device such as uplcom is present, u3g serial ports > > does not have the same name. I found no way to relate serial device name > > to this event and looking in source I see no place where it is created. I > > would like to put a devctl notify call there. This way I could start ppp > > with correct device name even if there is some other USB serial device. > > > > Could someone point me in the right direction? > > USB serial devices have their own unit management. There is however a way > to override the unit number through the "usb2_com_tty_name" callback, which > requires some code changes to the u3g driver. > > All USB modems and serial adapters end up with the same naming > prefix: /dev/cuaU%d.%d, so the assigned numbers must be serialised. > > What we could do is to have a separate naming prefix for 3G modems, and use > the device_get_unit() for unit number. > > See: src/sys/dev/usb/serial and usb_serial.c >
I looked over usb2_com_attach_tty function in usb_serial.c, and somewhere after call to tty_makedev (where a DPRINT is too) I could put a devctl call. All I need for it would be device name. In /var/log/message file I see a line telling 'u3g0 : Found 2 ports' just after usb2_com_attach_tty function is called. If you could tell me how I can get 'u3g0' name via sc argument in usb2_com_attach_tty function, I can solve this with no other change. Regards, Milan _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
