Hi,
With digging into the code...
I think the ht6560b controller supports DMA. At least it did so in 2.2
(where hdparm could still turn it on). DMA in 2.2 would improve the HD
from about 1M/s to 4M/s. So that's quite interesting.
Also the datasheet claims that there is full ANSI ATA-4a
I think the ht6560b controller supports DMA.
The data sheet doesn't. It's a PIO controller capable of PIO4 with 32bit
host to cpu transfers are best.
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Alan Cox wrote:
I think the ht6560b controller supports DMA.
The data sheet doesn't. It's a PIO controller capable of PIO4 with 32bit
host to cpu transfers are best.
Hmm. But what do you then think that 2.2 did?
I mean it now does 1.15M/s and in 2.2 it would do ~4M/s with DMA
Hmm. But what do you then think that 2.2 did?
PIO4
I mean it now does 1.15M/s and in 2.2 it would do ~4M/s with DMA on.
It's never done DMA.
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