From mboxrd@z Thu Jan 1 00:00:00 1970 From: pinchu Subject: External port Multiplier Support in linux Date: Fri, 10 Jul 2009 19:06:38 +0530 Message-ID: <4A5743E6.9000302@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ew0-f226.google.com ([209.85.219.226]:56795 "EHLO mail-ew0-f226.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750765AbZGJNgo (ORCPT ); Fri, 10 Jul 2009 09:36:44 -0400 Received: by ewy26 with SMTP id 26so1069706ewy.37 for ; Fri, 10 Jul 2009 06:36:43 -0700 (PDT) Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: jgarzik@pobox.com, linux-ide@vger.kernel.org Hi Jeff, We have an external RAID Disk Array which is having a port multiplier and four HDD behind the port multiplier. The RAID box is connected to host via SATA interface. The port multiplier we are using is implemented in FPGA. The linux kernel 2.6.28 is not detecting the port multiplier and devices behind it. By any chance linux kernel 2.6.28 supports external port multiplier? Does linux automatically detect port multiplier during bootup? Di i need to write driver for detecting the port multiplier? Thanks in advance. Regards, Pinchu