From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: qla2xxx and feral ISP updates in their respective BK trees Date: 20 Jun 2003 13:17:46 -0500 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1056133068.1804.22.camel@mulgrave> References: <1055971780.2075.484.camel@mulgrave> <20030620101224.B305@wonky.in0.lcl> <1056129548.2102.19.camel@mulgrave> <20030620102448.O305@wonky.in0.lcl> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from [65.114.3.137] ([65.114.3.137]:17925 "EHLO hancock.sc.steeleye.com") by vger.kernel.org with ESMTP id S263897AbTFTSEY (ORCPT ); Fri, 20 Jun 2003 14:04:24 -0400 In-Reply-To: <20030620102448.O305@wonky.in0.lcl> List-Id: linux-scsi@vger.kernel.org To: mjacob@feral.com Cc: SCSI Mailing List , Andrew Vasquez , Andrew Morton On Fri, 2003-06-20 at 12:25, Matthew Jacob wrote: > Oh- is parisc like PPC and doesn't really support io space? That is, > prefers memory mapped registers? Well, it does, for PCI (since it's required to by the spec). However, the cost of generating an I/O cycle is very high (you essentially go via some memory mapped registers in the bus controller). Parisc certainly prefers memory mapped registers. James