Experimental Physics and
Industrial Control System

Steve Kinder - UKRI STFC <[email protected]> · Tue, 7 Aug 2018 15:40:53 +0000

Hello all

I am trying to get an MRF PCIe-EVR-300DC configured and working on Linux using mrfioc2. I think I have an IOC built. I think I have some understanding of the parameters to mrmEvrSetupPCI(EVR-01, 1, 0, 0, 0). I could well be wrong on those but that isn't the source of my immediate problem. Executing the previous call gives:

Can't open /sys/module/mrf/parameters/interfaceversion in order to read kernel module interface version. Is kernel module loaded?

I found some documentation that indicates an MRF kernel driver is also required:

$ make -C /location/of/mrmShared/linux \

KERNELDIR=/lib/modules/`uname -r`/build modules_install

$ sudo depmod -a

$ sudo modprobe mrf

I seem to need to execute the first line as root or I get permissions problems. However then I get:

# make -C /home/controls/work/R3.14.12.5/support/mrfioc2/3-0-0/mrmShared/linux KERNELDIR=/lib/modules/`uname -r`/build modules_install
make: Entering directory `/home/controls/work/R3.14.12.5/support/mrfioc2/3-0-0/mrmShared/linux'
make -C /lib/modules/3.10.0-514.6.1.el7.x86_64/build M=/home/controls/work/R3.14.12.5/support/mrfioc2/3-0-0/mrmShared/linux modules_install
make[1]: Entering directory `/usr/src/kernels/3.10.0-514.6.1.el7.x86_64'
Makefile:641: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong not supported by compiler
  DEPMOD  3.10.0-514.6.1.el7.x86_64
make[1]: Leaving directory `/usr/src/kernels/3.10.0-514.6.1.el7.x86_64'
make: Leaving directory `/home/controls/work/R3.14.12.5/support/mrfioc2/3-0-0/mrmShared/linux'

The documentation dates back to 2015, Rev 7, so may be out of date?

Any advice/help would be much appreciated. Further documentation?

My kernel is 3.10.0-514.6.1.el7.x86_64, mrfioc2 3-0-0

Thanks

Steve

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System