Messages in this thread | | | Date | Tue, 2 Dec 2003 10:46:48 -0800 | From | Mike Fedyk <> | Subject | Re: libata in 2.4.24? |
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On Tue, Dec 02, 2003 at 01:04:58PM -0500, Jeff Garzik wrote: > On Tue, Dec 02, 2003 at 09:40:48AM -0800, Mike Fedyk wrote: > > There are PATA drives that do TCQ too, but you have to look for that feature > > specifically. IDE TCQ is in 2.6, but is still experemental. I think Jens > > Axboe was the one working on it IIRC. He would have more details. > > Let us distinguish three types of TCQ: > 1) PATA drive-side TCQ (now called "legacy TCQ") > 2) Controller-side TCQ > 3) SATA drive/controller-side TCQ ("first party DMA") > > libata will never support #1, which is what 2.6 supports in experimental > option.
An experemental option with the ide layer, not libata, right?
> > libata will support #2 very soon, and will support #3 when hardware is > available. >
If you have Controller-side TCQ, then will it work with any IDE PATA/SATA drive?
> > > Do the new SATA drives and controllers provide a solution to this? > > > > It's not SATA specific, and I'm not sure if any ide controller can support > > TCQ or if only a specific list are compatible. > > The TCQ you are thinking of has been deprecated by the people who make > IDE drives ;-)
Ahh, it's good to know that our TCQ support isn't lagging. We're even supporting TCQ standards that were only in place for 1 or 2 years. :) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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