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Date:      Mon, 14 Dec 2009 00:31:37 -0500
From:      "b. f." <bf1783@googlemail.com>
To:        dougb@freebsd.org
Cc:        freebsd-current@freebsd.org
Subject:   Re: AHCI/ATA_CAM for dummies?
Message-ID:  <d873d5be0912132131l1407e8d9te34d7ffd7d7f38a0@mail.gmail.com>
In-Reply-To: <d873d5be0912132105p6fea5f74ld0caf2cfe43cd808@mail.gmail.com>
References:  <d873d5be0912132105p6fea5f74ld0caf2cfe43cd808@mail.gmail.com>

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On 12/14/09, b. f. <bf1783@googlemail.com> wrote:
...
>>So far so good. :)  I am actually kind of curious as to why "device
>>ata" is needed, but it doesn't seem to be hurting anything.
>
> It is needed if you have AHCI hardware, and are operating in AHCI
> mode, but don't have ahci(4) in your kernel; or if you don't have AHCI
> hardware, or have AHCI hardware operating in legacy mode, and still
> want to use ATA devices.
>

I forgot to mention that ata(4) is also superfluous if you have
hardware that can use the  siis(4) driver, and that driver is in your
kernel.



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