linux-kernel - Re: [PATCH] New IDE/block driver for OCTEON SOC Compact Flash interface.

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Message-ID: <491CC0B6.8020400@ru.mvista.com>
Date:	Fri, 14 Nov 2008 03:05:10 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	David Daney <ddaney@...iumnetworks.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-mips <linux-mips@...ux-mips.org>
Subject: Re: [PATCH] New IDE/block driver for OCTEON SOC Compact Flash interface.

Hello.

David Daney wrote:

> As part of our efforts to get the Cavium OCTEON processor support
> merged (see: http://marc.info/?l=linux-mips&m=122600487218824), we
> have this CF driver for your consideration.
>
> Most OCTEON variants have *no* DMA or interrupt support on the CF
> interface so a simple bit-banging approach is taken.  Although if DMA is
> available, we do take advantage of it.
>
> The register definitions are part of the chip support patch set
> mentioned above, and are not included here.
>
> At this point I would like to get feedback as to whether this is a
> good approach for the CF driver, or perhaps generate ideas about other
> possible approaches.

   It's totally unacceptable for drivers/ide/ as this is self-containeed 
driver no using IDE core for anything, so this can only fit well to 
drivers/block/.
OTOH, CF support via self-contained driver is certainly a waste of code 
since IDE core and (libata) are here to drive the CF devices as well. 
What we need is a "normal" IDE or libata (at your option) driver.

WBR, Sergei


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