Date: Sat, 18 May 2002 15:29:03 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: freebsd-stable@freebsd.org Cc: "Lawrence.S.Lansing" <lansil@rpi.edu>, pir-sig@pir.net, mikea@mikea.ath.cx Subject: Re2: Problem with compact flash reader under -stable Message-ID: <200205182229.g4IMT3Qu013550@apollo.backplane.com>
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(oops, reposting, I totally screwed up the CC line. Sorry for
the dup!).
I just recently purchased a SimpleTech UCF-100 flashlink... a USB
compact flash reader. It didn't work right off the bat so I did a
Google search and found a thread from December begun by
Lawrence.
In that thread it would appear that someone tried to use a quirk entry
and failed. For that reason I did not try a quirk entry right off the
bat but played with CAM debugging to try to diagnose the problem. The
unit seemed to read mode pages just fine and I couldn't imagine why
a read operation would fail so I decided to construct a Quirk entry
along the lines described in the December thread and along the lines
of other entries in the quirk table for this class of reader.
Well, it worked! On my little HP desktop adding the quirk entry
allowed me to 'dd' from the dummy scsi device and also allowed me to
'mount -t msdos /dev/da8s1 /mnt', access, and manipulate the flash files.
I'm not sure why Mike Andrews experiment back in December failed.
There could be other issues at work with his hardware, or changes/fixes
made to the USB subsystem since then. This is just a head's up to
interested parties that I was able to get this thing to work. This
is the dmesg output from my unit:
umass0: DataFab Systems Inc. USB CF , rev 1.10/3.08, addr 2
da8 at umass-sim0 bus 0 target 0 lun 0
da8: <OEI-USB CompactFlash 3.08> Removable Direct Access SCSI-0 device
da8: 650KB/s transfers
da8: 245MB (501760 512 byte sectors: 64H 32S/T 245C)
I've submitted the quirk entry to the release engineers to try to get
it into the 4.6 release.
-Matt
Matthew Dillon
<dillon@backplane.com>
Index: scsi_da.c
===================================================================
RCS file: /home/ncvs/src/sys/cam/scsi/scsi_da.c,v
retrieving revision 1.42.2.23
diff -u -r1.42.2.23 scsi_da.c
--- scsi_da.c 8 Apr 2002 08:44:16 -0000 1.42.2.23
+++ scsi_da.c 18 May 2002 20:44:43 -0000
@@ -340,6 +340,13 @@
},
{
/*
+ * SimpleTech FlashLink UCF-100
+ */
+ {T_DIRECT, SIP_MEDIA_REMOVABLE, "OEI-USB", "CompactFlash", "*"},
+ /*quirks*/ DA_Q_NO_6_BYTE
+ },
+ {
+ /*
* Minolta Dimage 2330
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DIMAGE 2330*", "*"},
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