RE: devfs + PCI serial card = no extra serial ports

Ed Vance
2003-03-07T23:30:03Z

Sure, go ahead and try the second patch that adds the Netmos cards to the
serial driver's device tables. It is for a somewhat newer rev, but you might
just get offsets with no failed hunks. It's worth a try.

The serial driver will only detect cards that are in the table. It does not
mean that there is anything wrong with the card.

Good luck,
Ed

-----Original Message-----
From: Bryan Whitehead [mailto:driver@jpl.nasa.gov]
Sent: Friday, March 07, 2003 3:28 PM
To: Bryan Whitehead
Cc: linux-kernel@vger.kernel.org; linux-newbie@vger.kernel.org;
marekm@amelek.gda.pl
Subject: Re: devfs + PCI serial card = no extra serial ports

I just found this:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0212.2/0845.html

Has this patch been accepted into the new kernel series? Or should I
just toss this card (the NetMos PCI I/O card)?

Bryan Whitehead wrote:
> It seems devfsd has an annoying "feature". I bought a PCI card to get a
> couple (2) more serial ports. The kernel doesn't seem to set up the
> serial ports at boot, so devfs never creates an entry. However, post
> boot, since there is no entries, I cannot configure the serial ports
> with setserial. So basically devfsd = no PCI based serial add on?
>
> 03:05.0 Serial controller: NetMos Technology 222N-2 I/O Card (2S+1P)
> (rev 01) (prog-if 02 [16550])
> Subsystem: LSI Logic / Symbios Logic (formerly NCR): Unknown device
> 0002
> Flags: medium devsel, IRQ 17
> I/O ports at ecf8 [size=8]
> I/O ports at ece8 [size=8]
> I/O ports at ecd8 [size=8]
> I/O ports at ecc8 [size=8]
> I/O ports at ecb8 [size=8]
> I/O ports at eca0 [size=16]
>
>
> mknod ttyS2 c 4 66
> mknod ttyS3 c 4 67
> setserial ttyS2 port 0xecf8 UART 16550A irq 17 Baud_base 9600
> setserial ttyS3 port 0xece8 UART 16550A irq 17 Baud_base 9600
>
> I hoped after "setting up" the serial ports with setserial some magic
> would happen and they would apear in /dev/tts... but I was wrong.
>
> gets me working serial ports... but it's not in /dev... :O
>
> Am I just screwed?
>
> If so, what would be a good add on PCI based solution for more serial
> ports that WORKS with devfsd? (I don't want to disable devfs as this
> opens up a different set of problems)
>
> Thanks for any replay!
>

--
Bryan Whitehead
SysAdmin - JPL - Interferometry Systems and Technology
Phone: 818 354 2903
driver@jpl.nasa.gov

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