[Bugme-new] [Bug 9168] New: via82cxx/pata_via does not detect
40-wire cable
bugme-daemon at bugzilla.kernel.org
bugme-daemon at bugzilla.kernel.org
Mon Oct 15 11:58:49 PDT 2007
http://bugzilla.kernel.org/show_bug.cgi?id=9168
Summary: via82cxx/pata_via does not detect 40-wire cable
Product: IO/Storage
Version: 2.5
KernelVersion: linux-2.6.23-rc7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Serial ATA
AssignedTo: jgarzik at pobox.com
ReportedBy: alexsaa at gmail.com
Most recent kernel where this bug did not occur: not known
Distribution: Gentoo linux; linux-2.6.23-rc7 from kernel.org.
Hardware Environment: VIA vt8233a; 3 IDE hdds and 1 cdrom plugged as following:
primary channel is 80-wired, has 2 udma-capable hdds attached;
secondary channel is 40-wired, has udma-capable hdd and cdrom attached.
AMD Athlon XP 1700+
Software Environment: linux-2.6.23-rc7 with via_pata.
Problem Description:
UDMA mode (UDMA 100/133) is set for 40-wired device. (Expected is UDMA 33,
because higher speeds would cause ata bus errors).
dmesg says:
scsi0 : pata_via
scsi1 : pata_via
ata1: PATA max UDMA/133 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001dc00 irq 14
ata2: PATA max UDMA/133 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001dc08 irq 15
and, later,
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata2.00: BMDMA stat 0x64
ata2.00: cmd c8/00:08:6a:40:1d/00:00:00:00:00/e1 tag 0 cdb 0x12 data 4096 in
res 51/84:00:71:40:1d/00:00:00:00:00/e1 Emask 0x10 (ATA bus error)
ata2: soft resetting port
ata2.00: configured for UDMA/100
ata2.01: configured for UDMA/66
ata2: EH complete
Steps to reproduce:
1. VIA vt8233a
2. 40-wired cable
3. UDMA-capable HDD
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