From: Jeff Garzik <jeff@garzik.org>
To: "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Promise 20319 chipset specs opened
Date: Thu, 02 Nov 2006 00:12:26 -0500 [thread overview]
Message-ID: <45497E3A.6060103@garzik.org> (raw)
Promise has given me permission to post hardware programming info for
one of their chips (Linux driver: sata_promise), PDC20319. This also
marks the first open chipset for Promise (AFAIK), so let's give them a
round of applause.
The PDC20319 is a reasonably representative example of the hardware
programming interface covered by sata_promise. Kernel developers
wishing to work on sata_promise can study this doc, and deduce how the
two-port PDC2037x chips work.
In addition to describing the "packet" format for ATA and ATAPI
commands, this doc also describes how to use the chip's XOR RAID-assist
features. I think it would be cool if someone so motivated found a way
to use this efficiently under Linux.
The doc:
http://gkernel.sourceforge.net/specs/promise/pdc20319.pdf.bz2
I have also updated the list open chipsets and developer resources on
linux-ata.org:
http://linux-ata.org/driver-status.html#open_chipsets
http://linux-ata.org/devel.html
Have fun!
Jeff
next reply other threads:[~2006-11-02 5:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-02 5:12 Jeff Garzik [this message]
2006-11-02 5:46 ` More Promise chipset specs opened Jeff Garzik
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