Date: Thu, 16 Jul 2015 21:57:58 -0600 From: Warner Losh <imp@bsdimp.com> To: Ian Lepore <ian@FreeBSD.org> Cc: Luiz Otavio O Souza <lists.br@gmail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Warner Losh <imp@freebsd.org> Subject: Re: SDHC errors during boot on RPi2 (11.0-CURRENT) Message-ID: <08A8C4D5-54A5-432B-B3D7-744287B76EF9@bsdimp.com> In-Reply-To: <1437072916.1334.364.camel@freebsd.org> References: <55A5A3F4.7040105@foxvalley.net> <D7A88FAC-C4C0-46DB-91F6-9AF51CD142B7@bsdimp.com> <20150716142329.4387b29de5d7fc9a2a9c27ab@strcmp.org> <CAB=2f8yMjZ4U3cNyCVt%2BemJQ7A5vGniuGevq0bQe36tw-RoR_Q@mail.gmail.com> <1437072916.1334.364.camel@freebsd.org>
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--Apple-Mail=_FE0D1F64-07A2-428F-BB24-8B6B025E32AF Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Jul 16, 2015, at 12:55 PM, Ian Lepore <ian@FreeBSD.org> wrote: >=20 > On Thu, 2015-07-16 at 15:17 -0300, Luiz Otavio O Souza wrote: >> On 16 July 2015 at 09:23, Andreas Schwarz wrote: >>> On Wed, 15 Jul 2015 21:17:21 -0600 >>> Warner Losh wrote: >>>=20 >>>>> On Jul 14, 2015, at 6:06 PM, Dan Raymond wrote: >>>>>=20 >>>>> Is anyone else getting these errors during every boot? I'm = running r285346. >>>>=20 >>>> I=E2=80=99ve been running on the RPi2 for some time and have never = seen this. I haven=E2=80=99t >>>> rebuild in the past few weeks though. >>>>=20 >>>> Does this happen on either SD cards? Or other versions of the = kernel? >>>=20 >>> I've the same output (using generic RPI2 kernel conf). >>=20 >> This is a side effect of r283128, if you comment that line that >> re-select the card, CMD7 won't fail. >>=20 >> This also affects the MMC controller on Allwinner SoCs. >=20 > Hmm, so some cards deselect themselves when they shouldn't, and our > workaround that reselects them fails if the card didn't deselect = itself. > Maybe it will work for all cards/controllers if we explicitly deselect > then reselect the card at that point. (This only happens once at > card-insert/boot time, so it shouldn't impact performance.) >=20 > The attached patch adds the explicit deselect; it may or may not help. > (I haven't tested this at all). >=20 > -- Ian >=20 > Index: mmc.c > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > --- mmc.c (revision 285419) > +++ mmc.c (working copy) > @@ -1392,6 +1392,7 @@ mmc_discover_cards(struct mmc_softc *sc) > * out. Others seem to handle it correctly, so = it may > * be a combination of card and controller. > */ > + mmc_select_card(sc, 0); > mmc_select_card(sc, ivar->rca); > mmc_app_sd_status(sc, ivar->rca, = ivar->raw_sd_status); > mmc_app_decode_sd_status(ivar->raw_sd_status, Yes. I like this. Update the comment though please. Warner --Apple-Mail=_FE0D1F64-07A2-428F-BB24-8B6B025E32AF Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJVqH1GAAoJEGwc0Sh9sBEAaLcQAJQbgaulP03QcpPL1+tAkvV1 9F9gAL5eIoHaxSZTe7O2fQ2uxxpEvW6fpwBR10oy664Crdb6X1ty1xH9k/jMi4JV 1o7ueRRi791mzVm76bb7S3OKN0jdsIx84ovH7PJCYUPMS6lT6Q+uUiODyXJW61Pi tWmR3et9OY6Zf20EaP5ozVNkKZYMv5Ce76LOH5DTNrSJboOhdXDkEi8+cIYB+yEL baydKUDLwx5lzSTRp5lrtFSx5adBWf2qE92zxG/R0gRGXjWpBYqSz/f8LO+JyC8U BnucUEIZq9JirWX7oohZvetESgEUX+OYT2ygGGcdrLwHNoh5BVQj924HjDHLewkJ T62x1AFPmi1QerXUYbmxZXIZn8syaqc/lSR5rCXYAh8SHUHT+v90uz6XB+Gkppqf zNOObEaDgO4z++g8FB67XBKwqeHHVOFSHvuOXHDJ3ZOoCssx8A4Nqsi3SMzk1Fal ILwOdiHD6n4gHrI/e+F8tKigUbaNK5jphh9rYg+q8Ytj74eWaWVA8l4to1/5ZmVc b+Y0JX5vdhryYjDUuida9/G8BQLwKOcBfESyNwRmQU+xmeW0kkT2JmzxlrAk+lYu NeOiXhU/ew+0d3YgQ4yzH8PvRKRpBbA8lyBHJg8KBBE5hgO/HSodKCinuz7GSMYN Tbh9N7m/2aJYiawmBG4P =/3bz -----END PGP SIGNATURE----- --Apple-Mail=_FE0D1F64-07A2-428F-BB24-8B6B025E32AF--
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