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Article #128Re: Thinking about NCQ support for NetBSD
From: Matt Thomas
Date: Sun, 02 Jun 2013 01:43
Date: Sun, 02 Jun 2013 01:43
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On May 21, 2013, at 11:14 PM, Brian Buhrow <buhrow@nfbcal.org> wrote: > hello. Recently I've been working on some fixes for the mpt(4) > driver. In the process of getting those fixes working, I began thinking > about how hard it would be to get NCQ tag queueing working for NetBSD. In > the process of getting my head around what is involved, I find I have > questions. If someone wants to share what they know here or privately, > I'd be interested in reading. > > 1. I read a document that discussed ahcisata and its advantages over > traditional IDE mode. One of the advantages it touted was that ahcisata > would support NCQ tag queueing. Is it a requirement in order for NCQ > tag queueing to work that the interface card support it as well? For > example, the viaide(4) driver supports SATA controllers, but says nothing > about NCQ support or the potential for it. Yes. ahci can support as can the siisata but normal wdc based controllers can't. > 2. Does anyone have any preliminary patches for NCQ support that the never > got into the system? Yes. But I'm still testing them.
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From: Matt Thomas <matt@3am-software.com>
Newsgroups: fa.netbsd.tech.kern
Subject: Re: Thinking about NCQ support for NetBSD
Date: Sun, 02 Jun 2013 01:43:05 UTC
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To: Brian Buhrow <buhrow@nfbcal.org>
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