Re: MRF kernel modules not seeing hardware

[Han Lee via Tech-talk <tech-talk at aps.anl.gov>]

Hi Di,

On Wed, Jan 29, 2025 at 5:55 PM Di Wang <di.wang at kek.jp> wrote:

Hi Evan,

> I can't create a /dev node via udev or otherwise. The bizarre thing is that when I replace the problem CPU card/installation with a known "working" installation, the device ids are the typical,  supported "Signal processing controller: Device 1a3e:152c/252c, everything corresponding to your pciids repo.

According to this information, it seems that the PCI ID is not correct.
The PCI ID for your cPCI EVG/EVR 300 (0x250c/0x150c) are wrong. Correct
value should be 0x252c/0x152c. Perhaps a bit-reversal occurred?

I also encountered similar problem several years before when I failed to
use one of my PXI EVR. Later I found that its PCI ID (0x10e6) was
wrongly set to a PMC EVR's (0x11e6).

I suggest you to first re-flash the firmware and verify this error is
caused by MRF firmware or CPU card.

You can download firmware here or contact Jukka.
https://github.com/jpietari/mrf-firmware/tree/main/dc

FYI, The supported PCI IDs
https://github.com/epics-modules/mrfioc2/blob/master/mrmShared/linux/uio_mrf.c#L41-L74

Thank you for that information, I will update the pciids (my own repo) to use the latest information.

Best,

Han

 

Cheers
Di Wang
KEK

--

Jeong Han Lee, Dr.rer.nat.

Lawrence Berkeley National Laboratory

https://orcid.org/0000-0002-1699-2660