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From: Daan Vreeken <Daan@vehosting.nl>
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Cc: FreeBSD-Current <freebsd-current@freebsd.org>,
	Alexander Motin <mav@mavhome.dp.ua>
Subject: Re: WIP: ATA to CAM integration
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Hi,

On Friday 05 June 2009 19:28:15 Matthew Dillon wrote:
> :Latest AHCI specifications define feature named FIS Based Switching. It
> :allows controller independently track state of every device beyond port
> :multiplier. It should be quite easy to use it, but actually none of my
> :controllers have that capability.
>
>     Damn.  The FBSS capability bit is not set on my (AMD) MCP77 based AHCI
>     SATA controller.  That sucks.
>
>     ahci0: <NVidia-MCP77-SATA>...
>     ahci0: AHCI 1.2 capabilities
> 0xe3229f05<S64A,NCQ,SSNTF,SAL,SCLO,SPM,PMD>, 6 port
>
>     Do you know of any host controllers which support FBS ?  Any of the
>     Intel parts or machines per-chance?
...

According to the following link :
	http://www.siliconimage.com/products/product.aspx?pid=32

the SiI3132 supports FIS based switching. We use them in a storage server 
prototype.


Regards,
-- 
Daan Vreeken
VEHosting
http://VEHosting.nl
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