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SubjectRe: 440FX and DMA on 2.2.18pre18
On Sun, Nov 05, 2000 at 09:27:36AM -0800, you [Andre Hedrick] said:          
>
> On Sun, 5 Nov 2000, Ville Herva wrote:
>
> > You mean that if I apply the IDE-patch, I can get some DMA mode working?
>
> YES!!! in a word ;-)

Okay, I can confirm that:

hdparm -c1 -d1 /dev/hda

/dev/hda:
setting 32-bit I/O support flag to 1
setting using_dma to 1 (on)
I/O support = 1 (32-bit)
using_dma = 1 (on)


hdparm /dev/hda

/dev/hda:
multcount = 0 (off)
I/O support = 1 (32-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 1 (on)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 3737/255/63, sectors = 60036480, start = 0

DMA modes: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 udma5

hdparm -tT /dev/hda

/dev/hda:
Timing buffer-cache reads: 128 MB in 2.55 seconds = 50.20 MB/sec
Timing buffered disk reads: 64 MB in 5.73 seconds = 11.17 MB/sec


Not a top-notch result, but I guess 440FX just isn't capable of better. In
any case, that's heck of a lot better that the <3MB/s I was getting in
PIO mode without the IDE-patch.


-- v --

v@iki.fi
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