Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752302AbZCHOR3 (ORCPT ); Sun, 8 Mar 2009 10:17:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752045AbZCHORS (ORCPT ); Sun, 8 Mar 2009 10:17:18 -0400 Received: from 82-117-125-11.tcdsl.calypso.net ([82.117.125.11]:57000 "EHLO smtp.drzeus.cx" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751930AbZCHORR (ORCPT ); Sun, 8 Mar 2009 10:17:17 -0400 Date: Sun, 8 Mar 2009 15:17:10 +0100 From: Pierre Ossman To: avorontsov@ru.mvista.com Cc: Ben Dooks , Arnd Bergmann , Kumar Gala , Liu Dave , sdhci-devel@list.drzeus.cx, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: Re: [PATCH 07/13] sdhci: Add support for hosts with strict 32 bit addressing Message-ID: <20090308151710.637fe280@mjolnir.ossman.eu> In-Reply-To: <20090304174845.GC7477@oksana.dev.rtsoft.ru> References: <20090213144630.GA13436@oksana.dev.rtsoft.ru> <20090213144722.GG23889@oksana.dev.rtsoft.ru> <20090221165833.6dec220a@mjolnir.ossman.eu> <20090304174845.GC7477@oksana.dev.rtsoft.ru> X-Mailer: Claws Mail 3.7.0 (GTK+ 2.15.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; protocol="application/pgp-signature"; boundary="=_freyr.drzeus.cx-21860-1236521833-0001-2" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1936 Lines: 54 This is a MIME-formatted message. If you see this text it means that your E-mail software does not support MIME-formatted messages. --=_freyr.drzeus.cx-21860-1236521833-0001-2 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 4 Mar 2009 20:48:45 +0300 Anton Vorontsov wrote: > But I see the point of confusion... Instead of teaching > "SDHCI core" to work with 32 bits hosts, we'd better handle this > in the eSDHC part, in the accessors. >=20 > This is relatively trivial and should not cause much overhead > (at least when using DMA), just a small state machine with > the xfer mode register shadowed in software (plus, notice that > this also handles BLOCK_SIZE, as I promised in another email): >=20 Me like. Keeps my life a lot saner. :) Just be aware that there is a remote risk of breakage as people hacking on sdhci-core won't be aware of esdhc's, let's call it unique, behaviour. Some testing now and then on your part would be prudent. :) Rgds --=20 -- Pierre Ossman WARNING: This correspondence is being monitored by the Swedish government. Make sure your server uses encryption for SMTP traffic and consider using PGP for end-to-end encryption. --=_freyr.drzeus.cx-21860-1236521833-0001-2 Content-Type: application/pgp-signature; name="signature.asc" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (GNU/Linux) iEYEARECAAYFAkmz02kACgkQ7b8eESbyJLi+9ACfTPELBvqvxvpyZrSpgjCBL32t ARYAn1KnDdIMAk/ONTs4epEqRHmMx+Ej =drI/ -----END PGP SIGNATURE----- --=_freyr.drzeus.cx-21860-1236521833-0001-2-- -- 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/