From owner-freebsd-current@FreeBSD.ORG Wed Aug 27 16:14:35 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7D67E16A4BF for ; Wed, 27 Aug 2003 16:14:35 -0700 (PDT) Received: from mta03.fuse.net (mta03.fuse.net [216.68.1.123]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6EE7243FE1 for ; Wed, 27 Aug 2003 16:14:32 -0700 (PDT) (envelope-from mistry.7@osu.edu) Received: from [192.168.1.100] ([66.42.172.210]) by mta03.fuse.net (InterMail vM.5.01.06.04 201-253-122-130-104-20030726) with ESMTP id <20030827231431.BLVD5176.mta03.fuse.net@[192.168.1.100]> for ; Wed, 27 Aug 2003 19:14:31 -0400 From: Anish Mistry To: freebsd-current@freebsd.org Date: Wed, 27 Aug 2003 19:14:44 -0400 User-Agent: KMail/1.5.2 References: <200308262227.46391.mistry.7@osu.edu> In-Reply-To: <200308262227.46391.mistry.7@osu.edu> MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="Boundary-02=_ztTT/nksMCUf7Ek"; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200308271914.59403.mistry.7@osu.edu> Subject: Re: ATAng no PIO fallback? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Aug 2003 23:14:35 -0000 --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--