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:

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 ;-)


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