Re: MRF kernel modules not seeing hardware

["Daykin, Evan via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Han,

Thanks for your assistance. I am stuck at step (2) for udev rules - since the driver isn't showing up in /proc/devices, 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.

Going back to the problem version, running depmod -e -F <my system.map file> yields a slew of missing symbols, indicating the driver is somehow thinking vmlinux, System.map and the module's kernel target are all consistent when they are actually not.

I think the next thing I'll try is starting over with a fresh install on the next most recent minor rt kernel version, of which we have a verified working example.

-Evan

Get Outlook for Android

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From: Han Lee <jeonglee at lbl.gov>
Sent: Wednesday, January 29, 2025 4:49:01 PM
To: Jerzy Jamroz <jerzy.jamroz at ess.eu>; Timo Korhonen <Timo.Korhonen at ess.eu>
Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>; Daykin, Evan <daykin at frib.msu.edu>
Subject: Re: MRF kernel modules not seeing hardware

 

[EXTERNAL] This email originated from outside of FRIB

On Wed, Jan 29, 2025 at 1:34 PM Han Lee <jeonglee at lbl.gov> wrote:

Hi Evan,

Three steps you have to configure.

1. Kernel Driver
2. udev rules
3. dkms configuration if you want to keep the kernel driver up-to-date to any latest kernel update.
   

Please check the old repository for the further information, especially, configuration and setup

• https://github.com/icshwi/e3-mrfioc2/blob/master/configure/module/RULES_DKMS_L
• https://github.com/icshwi/e3-mrfioc2/tree/master/dkms

Your lspci returns the strange (not linux default) result from my understanding, since the standard pciids file doesn't contain " Micro-Research Finland Oy".

You probably use the similar my old repository pciid file instead of the standard Linux one.

1a3e:150c

1a3e:250c

Hi Jerzy and Timo,

Happy Lunar New Year!

My question is that the above two hardwares (150c/205c) are supported by the current mrfioc2 fully?

Evan, if they are not fully integrated into the mrfioc2, someone needs to add their support to the mrfioc2 repository.

If you can share the hardware, if ESS has them, information with me, I can update the pciids file for others.

I hope that ESS is still willing to share its local changes with the community.

Best,

Han

 

If you let me know which hardware you are using, I can add them into the old and still up-to-date repository.

https://github.com/jeonghanlee/pciids

Best,

Han

On Wed, Jan 29, 2025 at 7:17 AM Daykin, Evan via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hello,

 

On a new linux kernel 6.1.0-30-rt-amd64 installation, I am trying to install the mrfioc2 PCI kernel module by running the following:

 

sudo make KERNELDIR=/lib/modules/$(uname -r)/build modules_install

make -C /lib/modules/6.1.0-30-rt-amd64/build DRV_VERSION='3' M=/home/daykin/git/mrfioc2/mrmShared/linux modules_install

make[1]: Entering directory '/usr/src/linux-headers-6.1.0-30-rt-amd64'

  INSTALL /lib/modules/6.1.0-30-rt-amd64/extra/mrf.ko

  DEPMOD  /lib/modules/6.1.0-30-rt-amd64

Warning: modules_install: missing 'System.map' file. Skipping depmod.

make[1]: Leaving directory '/usr/src/linux-headers-6.1.0-30-rt-amd64'

 

depmod -a && modprobe: <no output>

 

lsmod|grep mrf

mrf                    24576  0

uio                    28672  1 mrf

parport                73728  1 mrf

 

cat /proc/devices

Character devices:

  1 mem

  4 /dev/vc/0

  4 tty

  4 ttyS

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

  7 vcs

10 misc

13 input

29 fb

116 alsa

128 ptm

136 pts

153 spi

180 usb

189 usb_device

226 drm

238 uio

239 aux

240 cec

241 lirc

242 ipmidev

243 watchdog

244 mei

245 nvme-generic

246 nvme

247 cxl

248 bsg

249 ptp

250 pps

251 rtc

252 dax

253 tpm

254 gpiochip

 

Block devices:

  7 loop

254 device-mapper

259 blkext

 

sudo dmesg|grep mrf

[  508.671574] mrf: loading out-of-tree module taints kernel.

[  508.671603] mrf: module verification failed: signature and/or required key missing - tainting kernel

 

 

I have also tried uninstalling the mrfioc2 version and installing Jukka’s driver (https://github.com/jpietari/mrf-linux-driver) after some small modifications for the deprecation of HAS_UNLOCKED_IOCTL and ioremap_nocache, the module builds successfully but the module_load script also indicates it doesn’t see any EVGs/EVRs.

 

In both cases, the device files /dev/uio* or /dev/era* are not installed, and the output of lspci is as follows:

 

sudo lspci -vv -nn -s 07:0f.0

07:0f.0 Signal processing controller [1180]: Micro-Research Finland Oy Device [1a3e:150c] (rev 01)

     Subsystem: Micro-Research Finland Oy Device [1a3e:150c]

     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-

     Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort+ <TAbort- <MAbort- >SERR- <PERR- INTx-

     Interrupt: pin A routed to IRQ 255

     IOMMU group: 15

     Region 0: Memory at a1000000 (32-bit, non-prefetchable) [disabled] [size=1M]

     Capabilities: [40] Null

 

 

sudo lspci -vv -nn -s 07:0e.0

07:0e.0 Signal processing controller [1180]: Micro-Research Finland Oy Device [1a3e:250c] (rev 01)

     Subsystem: Micro-Research Finland Oy Device [1a3e:250c]

     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-

     Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort+ <TAbort- <MAbort- >SERR- <PERR- INTx-

     Interrupt: pin A routed to IRQ 255

     IOMMU group: 15

     Region 0: Memory at a1100000 (32-bit, non-prefetchable) [disabled] [size=1M]

     Capabilities: [40] Null

 

 

I’ve tried with multiple cards, including some known to be working on older installations and hardware. Is there something I’m missing?

 

Thanks,

Evan

 

--

Jeong Han Lee, Dr.rer.nat.

Lawrence Berkeley National Laboratory

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

--

Jeong Han Lee, Dr.rer.nat.

Lawrence Berkeley National Laboratory

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