Re: 2.4.21 ServerWorks DMA Bugs

From: Tomas Szepe (
Date: Sun Jul 06 2003 - 04:06:56 EST

> []
> > Also, does anybody know what the status of the failure to recognize higher
> > UDMA modes on the CSB5 chipset? Is there a working patch out there?
> CSB5 UDMA works properly to all my knowledge

It doesn't all right. :)

On a G3 Compaq Proliant, all drives come up in PIO by default;
DMA needs to be enabled by "/usr/sbin/hdparm -d1 -X69 /dev/hdX".

# /sbin/lspci| grep IDE
00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 93)

# hdparm -Iv /dev/hdc| grep -ai model
        Model Number: WDC WD1200JB-00CRA1

Tomas Szepe <>
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