Re: Legacy IDE to be removed
On 3/22/21 3:31 AM, Michael Schmitz wrote:
> note that the libata driver for Falcon does not utilize interrupts due to the
> interaction between IDE, SCSI and floppy hardware, the latter two also making
> use of the ST-DMA chip which cannot be transparently checked for DMA completion.
> Instead, the libata driver polls for IDE command completion. This may add a little
> latency, but that's probably offset by the lack of contention between IDE and SCSI
> drivers in mixed IDE / SCSI operation. In my tests, I haven't found any substantial
> impact from the driver change (and I was quite sceptical of the libata driver performance).
Is this a fundamental limitation of libata that interrupts are not supported or just
a limitation of pata_falcon?
.''`. John Paul Adrian Glaubitz
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`. `' Freie Universitaet Berlin - email@example.com
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