From: Marcelo Penna Guerra <eu@marcelopenna.org>
To: linux-kernel@vger.kernel.org
Subject: Re: SII SATA request size limit
Date: Fri, 12 Sep 2003 18:00:24 -0300
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Alan Cox escreveu:

> It will depend what disks you have.
A friend from a forum found out this on NetBSD:

/* 
 ? ? * Rev. <= 0x01 of the 3112 have a bug that can cause data 
 ? ? * corruption if DMA transfers cross an 8K boundary.? This is 
 ? ? * apparently hard to tickle, but we'll go ahead and play it 
 ? ? * safe. 
 ? ? */ 
 ? ?if (PCI_REVISION(pa->pa_class) <= 0x01) { 
 ? ?? ?sc->sc_dma_maxsegsz = 8192; 
 ? ?? ?sc->sc_dma_boundary = 8192; 
 ? ?}

It seems to be a bug only in the first revisions of the chip. Can anyone 
confirm this? My chip is revision 2 and it doesn't have this bug.

> You can up it again at runtime.

How do I set the rqsize on 2.6.x?

Marcelo Penna Guerra
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