From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kallol Biswas Subject: Enabling MSI on SATAII150 Date: 26 Jun 2005 18:11:50 -0700 Message-ID: <1119834710.13331.654.camel@driver> References: <20050611021814.riaatwh8ztskw4g4@www.nucleodyne.com> <42AC6310.7030809@rtr.ca> <1118598197.25250.20.camel@driver> <42ACFFED.9050701@pobox.com> Reply-To: kallol@nucleodyne.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from rwcrmhc12.comcast.net ([216.148.227.85]:1687 "EHLO rwcrmhc12.comcast.net") by vger.kernel.org with ESMTP id S261697AbVF0BNC (ORCPT ); Sun, 26 Jun 2005 21:13:02 -0400 In-Reply-To: <42ACFFED.9050701@pobox.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: Mark Lord , linux-ide@vger.kernel.org Hello Jeff, We have been using the sx8 driver on a MIPS based custom platform. It seems the line based interrupt mechanism is broken on the system. SATA1150 controller supports MSI interrupt like other PCI-X devices. Unfortunately we do not have access to the controller's technical specification yet. Would it be possible to send us a reply detailing how to enable MSI interrupt on the adapter? BTW, with CARM_MAX_Q == 30 and a workaround to fix lost interrupt we have got good performance with the driver. Thanks for good work. MSI will help improve performance more, as there won't be any delay associated with handling lost interrupt. Kallol