From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aleksey Gorelov Subject: RE: Generic Disk Driver in Linux Date: Thu, 24 Aug 2006 12:40:12 -0700 (PDT) Message-ID: <20060824194012.77909.qmail@web83101.mail.mud.yahoo.com> References: <1156444573.3014.82.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: <1156444573.3014.82.camel@laptopd505.fenrus.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii" To: arjan@infradead.org Cc: jengelh@linux01.gwdg.de, daniel.rodrick@gmail.com, linux-kernel@vger.kernel.org, kernelnewbies@nl.linux.org, linux-newbie@vget.kernel.org, satinder.jeet@gmail.com --- Arjan van de Ven wrote: > On Thu, 2006-08-24 at 11:19 -0700, Aleksey Gorelov wrote: > > >From: linux-kernel-owner@vger.kernel.org > > >[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Jan Engelhardt > > >> > > >> I was curious that can we develop a generic disk driver that could > > >> handle all the kinds of hard drives - IDE, SCSI, RAID et al? > > > > > >ide_generic > > >sd_mod > > > > > >All there, what more do you want? > > > > Unfortunately, not _all_. DMRAID does not support all fake raids yet. > > Hi, > > it'll be easier and quicker to rev engineer 5 more formats than it will > be to get the bios thing working ;) And the performance of the bios probably true - I'm actually not great fan of originally proposed approach. But, unfortunately, manufactures and vendors still look more to MS. Until market situation changes, there is always a gap... > thing will be really really bad... (hint: real mode can access only 1Mb > of memory, so you will bounce buffer all IO's) This is true for non-dma case only. As I already mentioned before, most BIOSes support dma, and there is no 1Mb limit for that (at least on modern hw). Aleks. > > Greetings, > Arjan van de Ven >