From: Tejun Heo <htejun@gmail.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: Brad Campbell <brad@wasp.net.au>, linux-ide@vger.kernel.org
Subject: Re: Is the SIL 3112 capable of PMP support?
Date: Mon, 13 Nov 2006 23:03:40 +0900 [thread overview]
Message-ID: <45587B3C.3080303@gmail.com> (raw)
In-Reply-To: <45587548.7020808@garzik.org>
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.
--
tejun
next prev parent reply other threads:[~2006-11-13 14:03 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 [this message]
2006-11-14 12:29 ` Brad Campbell
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