Date: Fri, 18 Apr 2008 17:47:39 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Garrett Wollman <wollman@hergotha.csail.mit.edu> Cc: stable@freebsd.org, avg@icyb.net.ua Subject: Re: umass causes panic on 7 amd64 Message-ID: <20080418154739.GA79517@slackbox.xs4all.nl> In-Reply-To: <200804172313.m3HNDHFo006697@hergotha.csail.mit.edu> References: <1208046195.00056100.1208036121@10.7.7.3> <539c60b90804141549u6a138ad9u9c77bbfcbbad0ff3@mail.gmail.com> <20080415175347.GA29045@slackbox.xs4all.nl> <539c60b90804151134q7a25a141m1205a1b04d8ffc2c@mail.gmail.com> <20080415192028.GA31706@slackbox.xs4all.nl> <539c60b90804160910q3a242d7amb474b40065d6c9c6@mail.gmail.com> <1208373797.00057829.1208362805@10.7.7.3> <48071956.2090103@icyb.net.ua> <767FB33508C0E8E4E3CAA61A@utd65257.utdallas.edu> <200804172313.m3HNDHFo006697@hergotha.csail.mit.edu>
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--GvXjxJ+pjyke8COw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 17, 2008 at 07:13:17PM -0400, Garrett Wollman wrote: > In article <48076774.4090602@icyb.net.ua>, avg@icyb.net.ua writes: >=20 > >Eh I think I saw something like this myself. > >Do you by a chance have that new device sg in your kernel? > >I assume you do (GENERIC) - try to drop it. > >I am not sure if this is some brokenness of that driver or fighting of > >several USB drivers over the same hardware. >=20 > In my experience, umass over EHCI has never worked on any machine > ever, going back to 5.x and over multiple kinds of umass devices. (I I've had several machines with VIA chipsets where ehci never was a problem. My current machine has: usb4: <VIA VT6202 USB 2.0 controller> on ehci0 uhub4: <VIA EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb4 uhub4: 8 ports with 8 removable, self powered A 256MB usb flash drive works OK with this controller: umass0: <vendor 0x3538 USB Mass Storage Device, class 0/0, rev 2.00/1.00, a= ddr 2> on uhub4 da0 at umass-sim0 bus 0 target 0 lun 0 da0: <Generic USB Flash Disk 0.00> Removable Direct Access SCSI-2 device=20 da0: 40.000MB/s transfers da0: 250MB (512000 512 byte sectors: 64H 32S/T 250C) As does an external harddisk enclosure. umass0: <JMicron USB to ATA/ATAPI Bridge, class 0/0, rev 2.00/1.00, addr 2>= on u hub4 da0 at umass-sim0 bus 0 target 0 lun 0 da0: <WDC WD25 00JB-00REA0 0K20> Fixed Direct Access SCSI-2 device=20 da0: 40.000MB/s transfers da0: 238475MB (488397168 512 byte sectors: 255H 63S/T 30401C) I've never had read/write or data corruption problems with these.=20 Only when copying from _and_ to GELI encrypted devices has the transfer stalled occasionally. But that's probably due to my (single core) CPU running out of steam. In my experience machines with Via chipsets have always worked well and are very well supported by FreeBSD's drivers.=20 Likewise I've avoided nvidia stuff because of the lack of support. Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --GvXjxJ+pjyke8COw Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.8 (FreeBSD) iEYEARECAAYFAkgIwpsACgkQEnfvsMMhpyVoPQCfeqo6OSpxlDIBNr5mx4iy5dML eLcAn3/QPwiQBXMx8yRFaGFv5vEbGqCP =LjTB -----END PGP SIGNATURE----- --GvXjxJ+pjyke8COw--
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