Date: Wed, 27 Aug 2003 19:14:44 -0400 From: Anish Mistry <mistry.7@osu.edu> To: freebsd-current@freebsd.org Subject: Re: ATAng no PIO fallback? Message-ID: <200308271914.59403.mistry.7@osu.edu> In-Reply-To: <200308262227.46391.mistry.7@osu.edu> References: <200308262227.46391.mistry.7@osu.edu>
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--Boundary-02=_ztTT/nksMCUf7Ek Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Description: signed data Content-Disposition: inline On Tuesday 26 August 2003 10:27 pm, Anish Mistry wrote: > After removing atapicam from my kernel, so no panics on boot I decided to= =20 see > it DMA was fixed for my CD/DVD combo drive. I changed the > hw.ata.atapi_dma=3D"0" > to hw.ata.atapi_dma=3D"1" in my /boot/loader.conf. After a reboot I trie= d to > access my cdrom drive, and got the following error messages, which is very > similar to the messages when trying to dma before ATAng: > Aug 26 22:09:34 littleguy kernel: acd0: WARNING - READ_CD recovered from > missing interrupt > Aug 26 22:09:34 littleguy kernel: acd0: WARNING - READ_CD UDMA ICRC error > (retrying request) >=20 > The problem is that before with DMA enabled it would try dma a few times= =20 fail, > and then fall back to PIO, whcih though annoying still left the drive in a > useable condition. Where as now the drive just stays stuck and unusable. >=20 > ..... Anyone thinking about looking into this? I'll just submit a PR, in a day o= r 2=20 if there is no resposne. Thanks, =2D-=20 Anish Mistry --Boundary-02=_ztTT/nksMCUf7Ek Content-Type: application/pgp-signature Content-Description: signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (FreeBSD) iD8DBQA/TTtzxqA5ziudZT0RAqfVAJ9W7bkc0ymtKDpu6FGY6Gq1YrAskACgtIt9 12n8ddC5630nBX+QZNqZdP0= =c9IK -----END PGP SIGNATURE----- --Boundary-02=_ztTT/nksMCUf7Ek--
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