Experimental Physics and
Industrial Control System

Michael Davidsaver <[email protected]> · Fri, 10 Aug 2018 08:35:44 -0700

On 08/10/2018 06:31 AM, Steve Kinder - UKRI STFC wrote:
> # uname -a
> Linux TST-T02-IOC-CS-02.dl.ac.uk 3.10.0-514.6.1.el7.x86_64 #1 SMP Tue Jan 17 11:12:41 CST 2017 x86_64 x86_64 x86_64 GNU/Linux

So x86, I just wanted to be certain.  In the IOC shell run:

> pcidiagset 81 0 0
> pciread 32 0 0x64

The Version register is offset 0x2c.  The control register (0x4)
has a bit which enables byte order swapping for all registers
(including Control).

The sequence which sets this up is:.

https://github.com/epics-modules/mrfioc2/blob/master/evrMrmApp/src/drvemSetup.cpp#L575-L580

which I've not had problems with before.

If you want to go further you can run

> pcidiagset 81 0 0
> pciwrite 32 4 0
> pciread 32 0 0x64
> pciwrite 32 4 0x02000002
> pciread 32 0 0x64

One of these (I think the second) should show Version==0x17060207

> ________________________________
> From: Michael Davidsaver <[email protected]>
> Sent: 10 August 2018 13:14:11
> To: Kinder, Steve (STFC,DL,TECH)
> Cc: EPICS
> Subject: Re: mrfioc2 Linux driver
> 
> Steve, It looks like the value read from the Version register is backwards. 0x17 should be the MSB.  What does "uname -r" show?
> 
> On Fri, Aug 10, 2018, 4:37 AM Steve Kinder - UKRI STFC <[email protected]<mailto:[email protected]>> wrote:
> Sorry to have more questions. But I am going in the right direction.
> 
> 
> On calling the setup from the IOC I now get:
> 
> 
> epics> mrmEvrSetupPCI("EVR-01", "81:0.0")
> Device EVR-01  129:0.0 slot=6
> Using IRQ 88
> FWVersion 0x07020617
> Error: Firmware does not correspond to an EVR
> 
> Is this a symptom of using 2-2-0? Or is there some simpler explanation/solution? Sounds like the firmware isn't compatible with the support module and/or driver?
> 
> 
> Steve
> 
> 
> ________________________________
> From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> on behalf of Steve Kinder - UKRI STFC <[email protected]<mailto:[email protected]>>
> Sent: 07 August 2018 16:40:53
> To: [email protected]<mailto:[email protected]>
> Subject: mrfioc2 Linux driver
> 
> 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
> 
> 
> d
> o
> m
> o
> d
> p
> r
> o
> b
> e
> m
> r
> f
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System