Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261212AbVEBM4v (ORCPT ); Mon, 2 May 2005 08:56:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261218AbVEBM4v (ORCPT ); Mon, 2 May 2005 08:56:51 -0400 Received: from [147.145.40.20] ([147.145.40.20]:1187 "EHLO mail0.lsil.com") by vger.kernel.org with ESMTP id S261212AbVEBM4p (ORCPT ); Mon, 2 May 2005 08:56:45 -0400 Message-ID: <0E3FA95632D6D047BA649F95DAB60E5703662836@exa-atlanta> From: "Ju, Seokmann" To: "'kallol@nucleodyne.com'" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "Ju, Seokmann" Subject: RE: LSI Logic's Ultra320 320-4X RAID adapter Date: Mon, 2 May 2005 08:56:10 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: text/plain; charset="iso-8859-1" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1929 Lines: 60 On Saturday, April 30, 2005 9:02 PM, Kallol wrote: > The memory space PCI register access can not be used. I'm not sure what this means. Can you please add more details on it? > Question #1: Does 320-4X support IO Space device register access? No, the controller does not support IO mapped I/O. > Question #2: Do we have a linux driver for it that supports > IO ports also? Yes, to support LSI MegaRAID controllers (typically old controllers), driver on the 2.4 kernel supports I/O mapped I/O. Thank you. Seokmann LSI Logic Corporation. > -----Original Message----- > From: kallol@nucleodyne.com [mailto:kallol@nucleodyne.com] > Sent: Saturday, April 30, 2005 9:02 PM > To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org > Subject: LSI Logic's Ultra320 320-4X RAID adapter > > > > Hello, > We have been evaluting different IO adapters for a > storage system vendor. > > LSI logic's 320-4X RAID controller seems to be a good choice. > > There is an issue with the system on which we are measuring > performance. > The memory space PCI register access can not be used. > > Question #1: Does 320-4X support IO Space device register access? > Question #2: Do we have a linux driver for it that supports > IO ports also? > > The megaraid linux driver seems to check the BAR0, if it is > memory bar then mem > space is used otherwise IO space. > > May be the adapter supporting memory space also support IO > space access. > > > Thanks, > Kallol > - > To unsubscribe from this list: send the line "unsubscribe > linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/