From: Jeff Garzik <jgarzik@pobox.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Jerome Vuarand <jerome.vuarand@ubisoft.com>,
linux-ide@vger.kernel.org, jerome.vuarand@gmail.com
Subject: Re: Promise TX4 + SiI 3726 : only one disk visible
Date: Mon, 15 May 2006 19:40:34 -0400 [thread overview]
Message-ID: <44691172.8040402@pobox.com> (raw)
In-Reply-To: <44690D90.2030208@gmail.com>
Tejun Heo wrote:
> PMP support requires support from low-level drivers (sata_sil24,
> sata_promise,...) and sata_promise doesn't have it yet. As noted above,
> the only supported card is SiI3124/32 and I'm working on AHCI. As for
> sata_promise, I don't know. I don't have the card nor the document, so
> it won't come out of me. Jeff is planning to work on sata_promise and
> he might also do PM stuff, I guess.
FWIW, for sata_promise (PDC205xx):
I just looked in the docs, for Port Multiplier stuff. There is a single
vendor-proprietary 4-bit "PM port" MMIO register for each channel (aka
each SATA port).
You may program this register only when the port is idle, no active
commands nor DMA.
Jeff
next prev parent reply other threads:[~2006-05-15 23:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <6EB652BF05BEE44FA2A29B23F3A71528045B3857@UBIMAIL1.ubisoft.org>
2006-05-15 23:24 ` Promise TX4 + SiI 3726 : only one disk visible Tejun Heo
2006-05-15 23:40 ` Jeff Garzik [this message]
2006-05-15 23:58 ` Jeff Garzik
[not found] ` <89d273ba0605151712q7d6ab748q52ab321d45848a53@mail.gmail.com>
2006-05-16 0:18 ` Tejun Heo
[not found] ` <89d273ba0605151924o5ce25807qe01ca3b9e2715b6@mail.gmail.com>
2006-05-16 2:27 ` Jeff Garzik
2006-05-16 2:34 ` Tejun Heo
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