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SubjectRe: 2.3.14 and VIA IDE controller (MPV3 boards)
This one is affecting me, I think.  hda -d1 /dev/hda shows:

setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)

lspci shows:
[root@wr5z /root]# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT82C597 [Apollo VP3] (rev
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586 ISA [Apollo VP] (rev
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev
00:08.0 Ethernet controller: Digital Equipment Corporation DECchip 21041
Pass 3] (rev 21)
00:0a.0 Ethernet controller: 3Com Corporation 3c900 10BaseT [Boomerang]
01:00.0 VGA compatible controller: ATI Technologies Inc 215GB [Mach64
GB] (rev 5c)

On Mon, 23 Aug 1999 wrote:

> 0x20 is hex -->> rev. 32 or newer.
> Your chipset is rev. 25 and is not capable of UDMA.
> Andre Hedrick
> The Linux IDE guy
> On Tue, 24 Aug 1999, Jamie Lokier wrote:
> > wrote:
> > > If the ISA-Bridge revision on any VIA chipset group is not 0x20 or
> > > greater, UDMA is questionable.

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