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Date: Tue, 25 Oct 2005 13:37:25 -0400
From: Jeff Garzik <jgarzik@pobox.com>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: Deven Balani <devenbalani@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: reference code for non-PCI libata complaint SATA for ARM	boards.
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Alan Cox wrote:
> On Maw, 2005-10-25 at 17:41 +0530, Deven Balani wrote:
> 
>>Hi All!
>>
>>I am currently writing a low-level driver for non-PCI SATA controller
>>in ARM platform.which uses libata-core.c for linux-2.4.25. Can any one
>>tell me any reference code available under linux.
> 
> 
> At the moment its a bit hard to do a non PCI driver because the core
> code assumes that there is a device structure (or pci_dev structure) for
> everything. Fixing that is a two line change for 2.6 (probably similar
> for 2.4) but Jeff Garzik rejected it.

In 2.6.x, libata needs no fixes to support non-PCI devices.

An out-of-tree driver for a non-PCI embedded board exists, and works 
100%.  Use of struct device and dma_xxx() means it is bus-agnostic. 
That's how the whole system was designed to work -- and work, it does.

None of this is true in 2.4.x, of course...

	Jeff