FSL P5020/P5040: DPAA Ethernet issue with the latest Git kernel

[Christian Zigotzky]

On 24 June 2020, at 10:23 am, Alexander Gordeev wrote:
> On Sun, Jun 21, 2020 at 08:40:14AM +0200, Christian Zigotzky wrote:
>> Hello Alexander,
>>
>> The DPAA Ethernet doesn’t work anymore on our FSL P5020/P5040 boards [1] since the RC1 of kernel 5.8 [2].
>> We bisected last days [3] and found the problematic commit [4]. I was able to revert it [5]. After that the DPAA Ethernet works again. I created a patch for reverting the commit [5]. This patch works and I will use it for the RC2.
>> Could you please check your commit? [4]
> Hi Christian,
>
> Could you please check if the kernel passes CONFIG_TEST_BITMAP self-test?
>
> Thanks!
>
>> Thanks,
>> Christian
>>
>> [1] http://wiki.amiga.org/index.php?title=X5000
>> [2] https://forum.hyperion-entertainment.com/viewtopic.php?p=50885#p50885
>> [3] https://forum.hyperion-entertainment.com/viewtopic.php?p=50892#p50892
>> [4] lib: fix bitmap_parse() on 64-bit big endian archs: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=81c4f4d924d5d009b5ed785a3e22b18d0f7b831f
>> [5] https://forum.hyperion-entertainment.com/viewtopic.php?p=50982#p50982
>>
>>
Hi Alexander,

Thanks for your reply!

I compiled a test kernel with the option "CONFIG_TEST_BITMAP=y" 
yesterday. After that Skateman and I booted it and looked for the bitmap 
tests with "dmesg | grep -i bitmap".

Results:

FSL P5020:

[    0.297756] test_bitmap: loaded.
[    0.298113] test_bitmap: parselist: 14: input is '0-2047:128/256' OK, 
Time: 562
[    0.298142] test_bitmap: parselist_user: 14: input is 
'0-2047:128/256' OK, Time: 761
[    0.301553] test_bitmap: all 1663 tests passed

FSL P5040:

[    0.296563] test_bitmap: loaded.
[    0.296894] test_bitmap: parselist: 14: input is '0-2047:128/256' OK, 
Time: 540
[    0.296920] test_bitmap: parselist_user: 14: input is 
'0-2047:128/256' OK, Time: 680
[    0.299994] test_bitmap: all 1663 tests passed

Thanks,
Christian