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Forum Topic - devnp-ravb leading to kernal fault: (6 Items)

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Amit Walvekar(deleted)

04/05/2019 3:19 AM

post119631

devnp-ravb leading to kernal fault

Hello,

I am using QNX 7.0 on an RCar-H3 starter kit. I got the bsp from the QNX software center. I am currently exploring the 
possibilities of AVB on QNX since I was successful to have it working on the same hardware with Linux.

I noticed that a pre-built devnp-ravb driver was already part of the bsp and is functional for legacy ethernet traffic. 
I built devnp-ravb driver source code with some debug statements. I load it with io-pkt and when i try to bring up the 
interface, there is a kernel fault with the below backtrace and a reboot.

Shutdown[0,0] S/C/F=8/9/9 C/D=ffffff80600484d8/ffffff8060102680 state(1)= 1
QNX Version 7.0.0 Release 2017/02/14-16:05:38EST KSB:ffffff808304c000
$URL: http://svn.ott.qnx.com/product/branches/7.0.0/trunk/services/system/ker/timestamp.c $
[0]PID-TID=1-1? P/T FL=08019001/0c000000 "proc/boot/procnto-smp-instr"
[0]ASPACE PID=213022 PF=08401010 "proc/boot/io-pkt-v6-hc"

I am having doubts whether the delivered source code actually works or is more of a reference. Also the size of the 
prebuilt driver(68kB) is way less than the one i manually built(365kB)(Maybe because i did not strip it). Can anyone 
help me out with this? Is there also a guide which can help me with the driver's APIs?

Thanks,
Amit

Hugh Brown(deleted)

04/05/2019 7:34 AM

post119632

Re: devnp-ravb leading to kernal fault

Did you put debug statements in the ISR? AFAIK, the ravb driver is a working driver.

On 2019-04-05, 3:19 AM, "Amit Walvekar" <community-noreply@qnx.com> wrote:

Hello,

I am using QNX 7.0 on an RCar-H3 starter kit. I got the bsp from the QNX software center. I am currently exploring
the possibilities of AVB on QNX since I was successful to have it working on the same hardware with Linux.

I noticed that a pre-built devnp-ravb driver was already part of the bsp and is functional for legacy ethernet
traffic. I built devnp-ravb driver source code with some debug statements. I load it with io-pkt and when i try to bring
up the interface, there is a kernel fault with the below backtrace and a reboot.

Shutdown[0,0] S/C/F=8/9/9 C/D=ffffff80600484d8/ffffff8060102680 state(1)= 1
QNX Version 7.0.0 Release 2017/02/14-16:05:38EST KSB:ffffff808304c000
$URL: http://svn.ott.qnx.com/product/branches/7.0.0/trunk/services/system/ker/timestamp.c $
[0]PID-TID=1-1? P/T FL=08019001/0c000000 "proc/boot/procnto-smp-instr"
[0]ASPACE PID=213022 PF=08401010 "proc/boot/io-pkt-v6-hc"

I am having doubts whether the delivered source code actually works or is more of a reference. Also the size of the
prebuilt driver(68kB) is way less than the one i manually built(365kB)(Maybe because i did not strip it). Can anyone
help me out with this? Is there also a guide which can help me with the driver's APIs?

Thanks,
Amit

_______________________________________________

Networking Drivers
http://community.qnx.com/sf/go/post119631
To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com

Amit Walvekar(deleted)

04/08/2019 5:01 AM

post119634

Re: devnp-ravb leading to kernal fault

Hello,

You were right. I had slog2 statements inside the ISR. I removed them and it is working fine. Any idea why the log 
statements caused the issue?

Hugh Brown(deleted)

04/08/2019 7:34 AM

post119636

Re: devnp-ravb leading to kernal fault

If you look at the documentation for slog2, you will see that it isn't interrupt safe.


On 2019-04-08, 5:01 AM, "Amit Walvekar" <community-noreply@qnx.com> wrote:

    Hello,
    
    You were right. I had slog2 statements inside the ISR. I removed them and it is working fine. Any idea why the log 
statements caused the issue?
    
    
    
    _______________________________________________
    
    Networking Drivers
    http://community.qnx.com/sf/go/post119634
    To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com

Amit Walvekar(deleted)

04/08/2019 8:28 AM

post119637

Re: devnp-ravb leading to kernal fault

I see. Thanks for the info really helped me out. Btw, is the a PTP daemon also provided? i noticed a couple of them, "
ptpd" and "ptpd-avb". I cannot seem to get them working.

Error: can't open /var/run/kernel_clock: Bad file descriptor.

Is there any user guide?

Hugh Brown(deleted)

04/08/2019 8:35 AM

post119638

Re: devnp-ravb leading to kernal fault

There is documentation for ptpd and ptpd-avb in the SDP7 utilities documentation.


On 2019-04-08, 8:28 AM, "Amit Walvekar" <community-noreply@qnx.com> wrote:

    I see. Thanks for the info really helped me out. Btw, is the a PTP daemon also provided? i noticed a couple of them,
 "ptpd" and "ptpd-avb". I cannot seem to get them working.
    
    Error: can't open /var/run/kernel_clock: Bad file descriptor.
    
    Is there any user guide?
    
    
    
    _______________________________________________
    
    Networking Drivers
    http://community.qnx.com/sf/go/post119637
    To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com

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