HEADS UP: major CAM ATA MFC

[Alexander Motin]

Eugene Grosbein wrote:
> Jeremy Chadwick wrote:
>> I didn't have this problem.  System has AHCI in use, and the kernel is
>> built to make use of modular atacore.  Specifically:
>>
>> # Modular ATA
>> device          atacore         # Core ATA functionality
>> device          ataisa          # ISA bus support
>> device          atapci          # PCI bus support; only generic chipset support
>> device          ataahci         # AHCI SATA
>> device          ataintel        # Intel
> 
> How should STABLE user (not tracking freebsd-current@) learn about CAM ATA configuration?
> There is ahci(4) manual page in 8.0-PRERELEASE but no ada(4) that is linked here.
> 
> I've just tried "Modular ATA" configuration of Intel ICH7-based system plus "device ahci"
> minus all traditional ata(4) kernel configuration, the kernel builds fine
> but boot messages do not show any attempt to detect my SATA HDD,
> so root mount just fails (I use GEOM UFS labels in my /etc/fstab).
> Typing ? at "mounroot" prompt I see only daX devices standing for my USB cardreader
> and no device for HDD.

Read ahci(4) carefully. It has all possible references. If you think it
is not enough, propose patches.

> It seems I miss ada(4) device and I cannot find it in 8.0 - not ada.ko nor "device ada".

ada, same as da goes as part of cam module. It is not possible to load
them separately now. But for kernel configuration it is separate option.

-- 
Alexander Motin