From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Promise 20319 chipset specs opened Date: Thu, 02 Nov 2006 00:12:26 -0500 Message-ID: <45497E3A.6060103@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:31909 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S1750888AbWKBFMa (ORCPT ); Thu, 2 Nov 2006 00:12:30 -0500 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: "linux-ide@vger.kernel.org" Cc: Linux Kernel , Alan Cox 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