Re: Marvell 7042 has some problem on Marvell 6281(kirkwood) platform (Resent)

[Mark Lord <mlord@pobox.com>]

KueiHuan Chen wrote:
> Dear Mark,
> 
>   Sorry for the incorrect mail format, so i resent it again.
> 
>   Here has a problem when we put the 7042 on the kirkwood
> platform(6281). When system starting to build software raid 5,
> sometimes it would meet the unable to stop eDMA problem in all
> channels.  And then whole system is being hang ...  All the phy mode
> value are also not correctly if we read it out at that time.
..

Are you using a discrete 7042 chip on a PCIe bus
along with a 6281 chip ??  

Or are you simply using the built-in SATA controller inside the 6281 ?

In either event, Marvell did not deem to share *any* technical info
about the 6281 with me, so I really cannot help you.

Saeed Bishara from Marvell did everything to do with that chip.

>   Could you please kindly have a look at the error messages and give
> some advice for me to find out the root cause ? Thanks.
> 
> Thanks again.
> -------------
> ata4: Unable to stop eDMA
> ata4.00: exception Emask 0x52 SAct 0x1f SErr 0xffffffff action 0xe frozen
> ata4: SError: { RecovData RecovComm UnrecovData Persist Proto HostInt
> PHYRdyChg PHYInt CommWake 10B8B Dispar BadCRC Handshk LinkSeq
> TrStaTrns UnrecFIS DevExch }
> ata4.00: cmd 61/e0:00:c7:26:4f/01:00:01:00:00/40 tag 0 ncq 245760 out
>          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x56 (ATA bus error)
..

I think the messages that happened before those above are the important ones,
and you did not show those messages here.

Cheers
-- 
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com