From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Mark Nelson" Subject: Re: [RFC][PATCH] ahci: Add support for Promise PDC42819 Date: Tue, 2 Sep 2008 21:55:49 +1000 Message-ID: <65a6ef750809020455q7b7ee6a8jc404b4970f660c50@mail.gmail.com> References: <65a6ef750809020403i52228319u9e3197e4062941bc@mail.gmail.com> <48BD2136.1020101@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <48BD2136.1020101@garzik.org> Content-Disposition: inline Sender: linux-scsi-owner@vger.kernel.org To: Jeff Garzik Cc: linux-ide@vger.kernel.org, Mikael Pettersson , linux-scsi List-Id: linux-ide@vger.kernel.org On Tue, Sep 2, 2008 at 9:19 PM, Jeff Garzik wrote: > Mark Nelson wrote: >> >> Add an appropriate entry for the Promise PDC42819 controller. It has an >> AHCI mode and seems to work correctly with board_ahci. >> >> This chip is found on Promise's FastTrak TX2650 (2 port) and TX4650 (4 >> port) >> software-based RAID cards (for which there is a binary driver, t3sas) and >> can be found on some motherboards, for example the MSI K9A2 Platinum, >> which calls the chip a Promise T3 controller. >> >> Signed-off-by: Mark Nelson >> --- >> Apparently this chip also supports SAS disks, will these work with the >> ahci driver (I've only tested with normal desktop SATA disks)? > > ahci is definitely SATA-only, so I wonder how they modified AHCI to support > SAS transport... That is a good question. From my understanding the controller is a SAS controller that can drive SATA disks (as I guess all SAS controllers can do...). Could it be that the controller can be setup to act as an AHCI SATA controller or if the right registers are poked a SAS controller? Thanks! Mark > > Jeff > > > >