From: Brad Campbell <brad@wasp.net.au>
To: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>, linux-ide@vger.kernel.org
Subject: Re: Is the SIL 3112 capable of PMP support?
Date: Tue, 14 Nov 2006 16:29:19 +0400 [thread overview]
Message-ID: <4559B69F.7080207@wasp.net.au> (raw)
In-Reply-To: <45587B3C.3080303@gmail.com>
Tejun Heo wrote:
> Jeff Garzik wrote:
>> Brad Campbell wrote:
>>> I've been planning on doing some testing with PMP's and noticed that
>>> sata_sil does not support PMP. Is that a hardware limitation or just
>>> that nobody has implemented it in the driver yet ?
>>
>> Well, it doesn't support hardware context switching. It probably
>> supports PMP "the slow way" (one PMP-attached device at a time)
>
> I doubt 3112 can do pmp even "the slow way". It doesn't expose FIS
> interface nor does it have PMP field in its SControl register. It just
> can't generate PMP-aware FIS.
>
That answers the question nicely then. Time to upgrade to some 3124's I guess.
Brad
--
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to learn from the experience of others, are also remarkable
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prev parent reply other threads:[~2006-11-14 12:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-13 6:29 Is the SIL 3112 capable of PMP support? Brad Campbell
2006-11-13 13:38 ` Jeff Garzik
2006-11-13 14:03 ` Tejun Heo
2006-11-14 12:29 ` Brad Campbell [this message]
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