ucom doesn't work in 6.1-PRERELEASE?

Alexander Kabaev kabaev at gmail.com
Sat Mar 11 16:59:33 UTC 2006


On Sat, 11 Mar 2006 17:46:24 +0100
Torfinn Ingolfsen <torfinn.ingolfsen at broadpark.no> wrote:

> Hello,
> 
> When I attatch my usb-to-serial based AVR programmer (an avrusb500)
> to a machine running FreeBSD 6.1-prerelease, it shows up
> in /var/log/messages as:
> Mar 11 17:25:03 kg-fil kernel: ucom0: FTDI USB <-> Serial, rev
> 1.10/4.00, addr 2
> 
> However, there is no /dev/ucom0 entry.
> Details:
> 
> root at kg-fil# uname -a
> FreeBSD kg-fil.kg4.no 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #5: Sat
> Mar 11 15:05:47 CET 2006
> root at kg-fil.kg4.no:/usr/obj/usr/src/sys/FIL60  amd64
> 
> root at kg-fil# kldstat
> Id Refs Address            Size     Name
>  1    9 0xffffffff80100000 8b6820   kernel
>  2    1 0xffffffff809b7000 67e0     snd_ich.ko
>  3    2 0xffffffff809be000 346a8    sound.ko
>  4    1 0xffffffffa7c19000 1cd      blank_saver.ko
>  5    1 0xffffffffa7cb0000 10b6     uftdi.ko
>  6    1 0xffffffffa7cb2000 112f     ucom.ko
> 
> (as you can see, both utfdi and ucom is loaded).
> 
> root at kg-fil# usbdevs -v
> Controller /dev/usb0:
> addr 1: full speed, self powered, config 1, OHCI root hub(0x0000),
> nVidia(0x0000), rev 1.00 port 1 powered
>  port 2 powered
>  port 3 powered
>  port 4 addr 2: full speed, power 90 mA, config 1, USB <->
> Serial(0x6001), FTDI(0x0403), rev 4.00 port 5 powered
>  port 6 powered
>  port 7 powered
>  port 8 powered
>  port 9 powered
>  port 10 powered
> 
> But, no /dev/ucom* :
> root at kg-fil# ls -l /dev/ucom*
> ls: /dev/ucom*: No such file or directory
> root at kg-fil# ls -l /dev/usb*
> crw-rw----  1 root  operator    0,  30 Mar 11 15:50 /dev/usb
> crw-rw----  1 root  operator    0,  29 Mar 11 15:50 /dev/usb0
> crw-rw----  1 root  operator    0,  31 Mar 11 15:50 /dev/usb1
> 
> even if the usb entries are there.
> root at kg-fil# ps ax | grep usbd
>   405  ??  Is     0:00.00 /usr/sbin/usbd
> 
> For comparison, the device works fine under 5.4-stable:
> 
> root at kg-work# uname -a
> FreeBSD kg-work.kg4.no 5.4-STABLE FreeBSD 5.4-STABLE #5: Sat Dec 31
> 16:54:14 CET 2005     root at kg-work.kg4.no:/usr/obj/usr/src/sys/SS51G
> i386
> 
> Mar 11 17:44:17 kg-work kernel: ucom0: FTDI USB <-> Serial, rev
> 1.10/4.00, addr 2
> 
> root at kg-work# ls -l /dev/ucom*
> crw-rw----  1 uucp  dialer  220, 128 Jan  4 17:10 /dev/ucom0
> root at kg-work# ls -l /dev/usb*
> crw-rw----  1 root  operator  239, 255 Jan  4 17:10 /dev/usb
> crw-rw----  1 root  operator  239,   0 Jan  4 17:10 /dev/usb0
> crw-rw----  1 root  operator  239,   1 Jan  4 17:10 /dev/usb1
> crw-rw----  1 root  operator  239,   2 Jan  4 17:10 /dev/usb2
> crw-rw----  1 root  operator  239,   3 Jan  4 17:10 /dev/usb3
> 
> What's wrong, and how do I fix it?
> -- 
> Regards, 
> Torfinn Ingolfsen,
> Norway
> 
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/dev/ucomX devices became /dev/ttyUX devices quite some time ago.

-- 
Alexander Kabaev
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