Experimental Physics and
Industrial Control System

문건영(선형가속기팀) via Tech-talk <tech-talk at aps.anl.gov> · Thu, 5 Jan 2023 05:41:36 +0000

Dear All,

I am trying to MTCA-EVG-300 and MTCA-EVR-300U are working on Linux using mrfioc2.
But, the following error is displayed:

epics> mrmEvgSetupPCI("EVG",08,00,0)
Can't open /sys/module/mrf/parameters/interfaceversion in order to read kernel module interface version. Kernel module not loaded or too old.

I used the latest version driver provided by MRF. https://github.com/jpietari/mrf-linux-driver
Do I have to use a driver other than this one?

The mrf directory does not exist In the /sys/module directory.
Instead, pci_mrfevg, pci_mrfevr exists.

# ls /sys/module/pci_mrfev*
/sys/module/pci_mrfevg:
coresize   holders    initstate  refcnt     taint
drivers    initsize   notes      sections   uevent

/sys/module/pci_mrfevr:
coresize   holders    initstate  refcnt     taint
drivers    initsize   notes      sections   uevent

# lsmod 
Module                  Size  Used by    Tainted: G  
pci_mrfevr             57344  0 
pci_mrfevg             53248  0 
nfsv3                  28672  1 
nfs                   135168  2 nfsv3
lockd                  77824  2 nfsv3,nfs
grace                  16384  1 lockd
sunrpc                196608  6 nfsv3,nfs,lockd
x86_pkg_temp_thermal    16384  0 
igb                   184320  0

# ls /dev/e*
/dev/ega0  /dev/ega2  /dev/era0  /dev/era2  /dev/erb0  /dev/erb2
/dev/ega1  /dev/ega3  /dev/era1  /dev/era3  /dev/erb1  /dev/erb3

# dmesg | tail
Event Generator PCI/PCIe driver exiting.
Event Receiver PCI/PCIe driver exiting.
Event Generator PCI/PCIe driver init.
mrfevg:BAR0 start df000000 end df07ffff mmaped 41180000
udevd[165]: specified group 'mrf' unknown
Event Receiver PCI/PCIe driver init.
mrfevr:BAR0 start df200000 end df23ffff, mmap 40780000
mrfevr: Device Type: MTCAEVR300
mrfevr:BAR0 start df100000 end df13ffff, mmap 41040000
mrfevr: Device Type: MTCAEVR300

Best regards,
Geonyeong Mun

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System