From: "Deven Balani" <devenbalani@gmail.com>
To: "Jeff Garzik" <jgarzik@pobox.com>
Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org,
Linux-arm-kernel@lists.arm.linux.org.uk
Subject: Re: non-PCI based libata-SATA driver
Date: Thu, 23 Feb 2006 16:30:57 +0530 [thread overview]
Message-ID: <7a37e95e0602230300r2b78f2d6ya4726e5d69342c98@mail.gmail.com> (raw)
In-Reply-To: <43FD87A9.1010406@pobox.com>
> non-PCI works quite easily under 2.6.x, because libata core uses the
> generic DMA mapping lib. It's already confirmed to work on at least one
> other ARM embedded chipset (sorry can't give more detail).
Thanks a lot for the valuable info.
> 2.4.x is a lot of work to do non-PCI, largely because you have to deal
> with the lack of a generic DMA interface. 2.4.x libata is hardcoded to
> use PCI DMA mapping.
At the back of my mind, i'm still exploring on how much work will be
required to do non-PCI libata-SATA in 2.4.x.
{I mean the changes that need to be done in kernel-2.4.23 onwards to
support non-PCI libATA-SATA. By some means, I have access to
physically contiguous memory blocks which can be used to do
DMA-ScatterGather.}
A pointer from your side will help me in hitting the nail right,
otherwise I'll be hurting myself a lot later on :)
Thanks a lot once again.
Deven
prev parent reply other threads:[~2006-02-23 11:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-22 12:04 non-PCI based libata-SATA driver Deven Balani
2006-02-23 0:23 ` Alan Cox
2006-02-23 6:08 ` Deven Balani
2006-02-23 10:00 ` Jeff Garzik
2006-02-23 11:00 ` Deven Balani [this message]
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