Experimental Physics and
Industrial Control System

Jeong Han Lee <[email protected]> · Tue, 7 Aug 2018 20:24:37 +0200

Hi,

 There are are two versions of mrfioc2, one is

http://epics.sourceforge.net/mrfioc2/ and the other is the PSI one. At

the some level, Michael merged from PSI changes into the community

master branch.

 Last year, ESS supported Michael in order to integrate all MTCA EVR

300 and PCIe EVR 300DC, because MTCA EVR 300 and PCIe EVR 300DC are the

main EVRs which are used at ESS.

 The recent version of mrfioc2 is 2.2.0, and based on that version,

ESS has the local customized one in github [1]. The most files which

we've changed are DB and template files, and few configuration related

files.

 The kernel driver and other configuration files can be done manually

according to Michael's explanation. In addition, you might get the

glimpse how ESS does in README [2]. Note that one shouldn't delete the

cloned repository after the installation, because it uses the symbolic

link instead of a hard copied path.

 In addition, two directories (template, cmds) in e3-mrfioc have

useful information about hardware orientated substitution files and ESS

EPICS startup scripts, which one can ignore the beginning few lines

started with "require". In the template directory, you can find the ESS

PCIe-EVR-300DC substitutions file. We are planing to merge our changes

to the main community one after this summer before next year.

  HTH,
  Han

[1] https://github.com/javicereijo/mrfioc2
[2] https://github.com/icshwi/e3-mrfioc2

[3]

https://raw.githubusercontent.com/icshwi/e3-mrfioc2/master/template/evr-pcie-300dc-ess.substitutions

On 08/07/2018 06:15 PM, Michael Davidsaver wrote:

mrfioc2 3-0-0

The latest version of the mrfioc2 modules is 2.2.0 released in October 2017.  Are you my chance using the PSI forked version?

http://epics.sourceforge.net/mrfioc2/

Please note the Supported Hardware section.  This includes the PCIe-EVR-300dc

Section 4 of my manual covers the setup you're trying to do.

http://epics.sourceforge.net/mrfioc2/evr-usage.pdf

There is also a example UDEV rule in mrmShared/linux/README

If you're able to try 2.2.0, and still have difficulty getting the kernel module loaded,
please reply with the output of:

lsmod |grep mrf

dmesg|grep mrf

On 08/07/2018 08:40 AM, Steve Kinder - UKRI STFC wrote:

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