Re: [Linux-gpib-general] Documentation

[frank m. h. <fm...@st...>]

On Thu, 27 Jun 2002, Major A wrote:

>
> Hi,
>
> I just downloaded linux-gpib-3.1.4 and failed to get anything
> working. This may be due to the card not being supported, or due to my
> stupidity, or both. Unfortunately, the documentation shipped with the
> package seems to be outdated, I couldn't find ibchk and the other
> utilities mentioned, and no such modules as gpib0.o etc. are built.

Yes, the documentation is quite outdated.

>
> I did a modprobe on the driver I believe I need (cec-gpib), which then
> printed an initialization message in the system log. Now there's some
> confusion as to what device files I need -- I tried various
> major/minor combinations (c 31 0, c 31 17, c 160 0, c 160 17), with no
> success: only c 160 0 seems to have a kernel driver behind it, but it
> says "invalid argument" to anything I do. I'd like to use the VFS
> interface, so I didn't bother setting up a config file etc.
>

The VFS interface doesn't exist at present.

> Another potential problem is the card: it's an HP PCI card and has two
> chips on it: a PLX9050 (which is also used by cards supported by
> cec-gpib and ines-gpib, apparently), and a Xilinx FPGA. I only hope
> that it's compatible to one of the other PCI cards... This is the
> output of lspci -v:
>
> 01:0a.0 Communication controller: PLX Technology, Inc. PCI <-> IOBus Bridge (rev 01)
>         Subsystem: Hewlett-Packard Company: Unknown device 10b0
>         Flags: medium devsel, IRQ 11
>         Memory at ff8fec00 (32-bit, non-prefetchable) [size=128]
>         I/O ports at dc00 [size=128]
>         Memory at ff8fe800 (32-bit, non-prefetchable) [size=32]
>         Memory at f6af8000 (32-bit, prefetchable) [size=32K]
>         Memory at ff8fe400 (32-bit, non-prefetchable) [size=16]
>
> Anyone recognize this?

Sorry, you are probably SOL as far as HP cards go, as far as I know
Agilent doesn't release register-level info on their cards.  It's too bad,
because 90% of the code required for a basic driver already exists.


>
> Before I forget: I use devfs, is there any support for it in
> linux-gpib? It would be nice to have it, so I wouldn't have to create
> device files "by hand".
>

No, but it should get put in eventually...

Frank