SiI3112 SATA controller problems - status
From: Soren Schmidt (sos_at_spider.deepcore.dk)
Date: 09/30/03
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To: current@freebsd.org Date: Tue, 30 Sep 2003 22:06:40 +0200 (CEST)
I have now found a way to reproduce the DMA problems some setups seems
to be having with the SiI3112A SATA chip.
Now, if I use real SATA drives, (and I mean real SATA drives, the
WD Raptor fx is not a real SATA device but just a PATA device
with a build in PATA->SATA converter chip) it works just fine
no matter what I try.
If however I use an older PATA drive and a certain PATA->SATA "dongle"
(in this case 1 out of 4 samples) I can reproduce the problem pretty
easily.
This suggests to me that we are looking at a timing problem of sorts
the question is where.
I'll work on the problem as time permits...
-Søren
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