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SubjectUDMA66/100 errors...
Kernel == 2.2.17 + ReiserFS + IDE patches

I'm getting the following error when I try and enable UDMA on my
new IBM Deskstar UDMA100 drive:


Model=IBM-DTLA-307030, FwRev=TX4OA50C, SerialNo=YKDYKGF1437
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=60036480
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5

1 root@asdf:/stuff# hdparm -c1m16k1d1X67 /dev/hdb

setting 32-bit I/O support flag to 1
setting multcount to 16
setting using_dma to 1 (on)
setting keep_settings to 1 (on)
setting xfermode to 67 (UltraDMA mode3)
ide0: Speed warnings UDMA 3/4/5 is not functional.
HDIO_DRIVE_CMD(setxfermode) failed: Bad address
multcount = 16 (on)
I/O support = 1 (32-bit)
using_dma = 1 (on)
keepsettings = 1 (on)

1 root@asdf:/stuff# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C596 ISA [Apollo PRO] (rev 23)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 10)
00:07.3 Host bridge: VIA Technologies, Inc.: Unknown device 3050 (rev 30)
00:11.0 Multimedia video controller: 3Dfx Interactive, Inc. Voodoo (rev 02)
00:12.0 VGA compatible controller: Cirrus Logic GD 5446
00:13.0 Ethernet controller: Winbond Electronics Corp W89C940

I'm using a standard 40pin cable measured at just less than 18 inches.
/dev/hda1 is a Quantum Fireball EL 7.6G. The setup works at UDMA66
aparently no problem, however if I try to enable UDMA mode 3/4/5 I get
the above error. Must I use the 80 conductor cable? Is it safe to use
the 80 pin cable and have both drives plugged into it? Here is the
stats on the Quantum:


Model=QUANTUM FIREBALL EL7.6A, FwRev=A08.1100, SerialNo=347816714615
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=15907/15/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=DualPortCache, BuffSize=418kB, MaxMultSect=16, MultSect=16
CurCHS=15907/15/63, CurSects=1597178085, LBA=yes, LBAsects=15032115
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 *udma2

Mike A. Harris - Linux advocate - Open source advocate
This message is copyright 2000, all rights reserved.
Views expressed are my own, not necessarily shared by my employer.

#[Mike A. Harris bash tip #1 - separate history files per virtual console]
# Put the following at the bottom of your ~/.bash_profile
[ ! -d ~/.bash_histdir ] && mkdir ~/.bash_histdir
tty |grep "^/dev/tty[0-9]" >& /dev/null && \
export HISTFILE=~/.bash_histdir/.$(tty | sed -e 's/.*\///')

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