From: Tejun Heo <tj@kernel.org>
To: Harry Zhang <harry.zhang@amd.com>
Cc: jgarzik@pobox.com, linux-ide@vger.kernel.org, shane.huang@amd.com
Subject: Re: [PATCH 2/2 v5] ahci: add "em_buffer" attribute for AHCI hosts
Date: Fri, 23 Apr 2010 11:52:16 +0200 [thread overview]
Message-ID: <4BD16DD0.2090900@kernel.org> (raw)
In-Reply-To: <1272014918.3594.43.camel@zm-desktop>
On 04/23/2010 11:28 AM, Harry Zhang wrote:
> Add "em_buffer" attribute for SATA AHCI hosts to provide a way for
> userland to access AHCI EM (enclosure management) buffer directly if the
> host supports EM.
>
> AHCI driver should support SGPIO EM messages. However the SATA/AHCI
> specs did not define the SGPIO message format filled in EM buffer.
> Different HW vendors may have different definitions. The mainly purpose
> of this attribute is to solve this issue by allowing HW vendors to
> provide userland drivers and tools for their SGPIO initiators.
>
> Signed-off-by: Harry Zhang <harry.zhang@amd.com>
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
--
tejun
prev parent reply other threads:[~2010-04-23 9:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-23 9:28 [PATCH 2/2 v5] ahci: add "em_buffer" attribute for AHCI hosts Harry Zhang
2010-04-23 9:52 ` Tejun Heo [this message]
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