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SubjectRe: Odd problem with UDMA drive and 2.2.3-pre3 and 2.2.5

There is nothing wrong with the drive or mainboard.
PIIX3 can,t do UDMA.
There is no currect code to back peddle to correct gross hardware
problem. It can be done by recompiling with CONFIG_AUTODMA disabled,
and call from your rc.local script.

hdparm -X34 -d1 /dev/hda

Only after booting.

On 6 Apr 1999, Dale E. Martin wrote:

>
> I have an IBM 10.1G UDMA drive. I'm using it with a Tyan dual PPro
> motherboard - it's an S1668, upgraded with the latest (May 1998) bios.
>
> The odd thing is that the kernel will only talk to the drive in UDMA mode
> if I have my old Western Digital 1.6G disk plugged in on the secondary
> controller. Since I'm giving that disk away, this is a small concern.
> (It's only a small concern since linux is installed primarily on SCSI disks
> attached to the same system.)
>
> Here are the relevant bits of a boot where the kernel isn't happy with the
> drive:
>
> [ snip ]
>
> PIIX3: IDE controller on PCI bus 00 dev 39
> PIIX3: not 100% native mode: will probe irqs later
> ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
> ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
> hda: IBM-DTTA-351010, ATA DISK drive
> hdd: TOSHIBA CD-ROM XM-6102B, ATAPI CDROM drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: IBM-DTTA-351010, 9671MB w/466kB Cache, CHS=1232/255/63, UDMA
> hdd: ATAPI 24X CD-ROM drive, 256kB Cache
> Uniform CDROM driver Revision: 2.54
>
> [ snip ]
>
> Partition check:
> sda: sda1 sda2 sda3 sda4
> sdb: sdb1 sdb2
> sdc: sdc1
> hda:hda: timeout waiting for DMA
> hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hda: DMA disabled
> ide0: reset: success
> hda1 hda2 hda3 < hda5 hda6 hda7 >
>
> [ snip ]
>
> Like I said - this doesn't happen if I install my Western Digital AC31600
> to the secondary controller. Then I don't het the timeout message, and
> hdparm says it's talking to the drive using UDMA.

It can't............do it. this the disable.

> Thanks for any hints.
>
> Later,
> Dale
> --
> +------------------------- pgp key available --------------------------+
> | Dale E. Martin | Clifton Labs, Inc. | Senior Computer Engineer |
> | dmartin@clifton-labs.com | http://www.clifton-labs.com |
> +----------------------------------------------------------------------+
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> Please read the FAQ at http://www.tux.org/lkml/
>

Andre Hedrick
The Linux IDE guy
http://www.dyer.vanderbilt.edu/server/udma/2.2.5.uniform-ide-6.19.patch.gz

APC UPS Daemon Support Center.
http://www.brisse.dk/site/apcupsd/
Going GPL2 source on April 7, 1999


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