From: Jeff Garzik <jgarzik@pobox.com>
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.
Date: Tue, 25 Oct 2005 13:37:25 -0400 [thread overview]
Message-ID: <435E6D55.7090903@pobox.com> (raw)
In-Reply-To: <1130254633.25191.33.camel@localhost.localdomain>
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
next prev parent reply other threads:[~2005-10-25 17:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-25 12:11 reference code for non-PCI libata complaint SATA for ARM boards Deven Balani
2005-10-25 15:37 ` Alan Cox
2005-10-25 17:37 ` Jeff Garzik [this message]
2005-10-26 5:58 ` Deven Balani
2005-10-26 13:16 ` Erik Mouw
2005-11-14 8:22 ` Deven Balani
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