Re: MRF kernel modules not seeing hardware

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

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

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