Re: [PATCH] speed up SATA
From: Jeff Garzik
Date: Sun Mar 28 2004 - 15:30:37 EST
Stefan Smietanowski wrote:
Hi Jeff.
I'm about to add a raft of SATA-2 hardware, all of which are queued.
The standard depth is 32, but one board supports a whopping depth of 256.
Speaking of which .. I just read an announcement that someone (of course
the name eludes me) announced a DVD Burner that's SATA.
Found it:
http://www.plextor.com/english/news/press/712SA_pr.htm
a) Are there provisions in the SATA (1) SPEC for support of
non-disk units?
b) if (strcmp(a, "no"))
Do you know anything about it, ie is it SATA1 or 2 or what?
c) Let's ponder one gets a unit like this - is it usable with
libata yet?
d) if (strcmp(c, "no"))
Will it? :)
SATA ATAPI looks and works just like PATA ATAPI, with one notable
exception: S/ATAPI will include "asynchronous notification", a feature
that allows you to eliminate the polling of the cdrom driver that
normally occurs.
You can use ATAPI on SATA today, using a PATA->SATA bridge. In fact
that's the only way I can test SATA ATAPI at all, right now.
I hope somebody sends me one of these Plextor devices for testing ;-)
Jeff
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