Experimental Physics and
Industrial Control System

김지화(빔라인장치팀) <[email protected]> · Fri, 11 Mar 2016 21:03:18 +0000

Hi Michael,

When boot time automatically loaded SLAC MRF "pci_mrfevr".
 [root@amc725 ~]# lsmod | grep mrf
 mrf                    13648  0
 uio                    19175  1 mrf
 parport                40636  1 mrf
 pci_mrfevr             53687  0

 I manually removed.
 [root@amc725 opt]# /sbin/rmmod pci_mrfevr

[root@amc725 opt]# lsmod | grep mrf
 mrf                    13648  0
 uio                    19175  1 mrf
 parport                40636  1 mrf

 Restarted mrfioc2 but same error.

mrmEvrSetupPCI("PMCEVR",0xe,1,0)
 Device PMCEVR  14:1.0
 Using IRQ 16
 Failed to open uio device for PCI device 0000:0e:01.0: No such file or directory
 Failed to enable interrupt

 How do I disable/remove this "pci_mrfevr" ?

-Jihwa
________________________________________
보낸 사람: Michael Davidsaver <[email protected]>
보낸 날짜: 2016년 3월 11일 금요일 오후 11:18
받는 사람: 김지화(빔라인장치팀); [email protected]; [email protected]
제목: Re: mrfioc2 error at uTCA platform

On 03/10/2016 11:58 PM, 김지화(빔라인장치팀) wrote:
> Hi Michael,
> I've attached system information.

> [root@amc725 ~]# lsmod
>  Module                  Size  Used by
> ...
>  mrf                    13648  0
>  uio                    19175  1 mrf
>  parport                40636  1 mrf
> ...
>  pci_mrfevr             53687  0

This shows that both kernel modules are loaded.  To simplify
troubleshooting please ensure that only the 'mrf' module is loaded and
not 'pci_mrfevr'.

Only one linux driver can be attached to a particular PCI device.  This
will typically be the first one loaded, in this case 'pci_mrfevr'.  I
should also note that, with modern Linux drivers, having to manually
create a file in /dev/ is a sure sign that something is wrong.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System