ATA APM and NCQ support in FreeBSD atacontrol

[Andrey V. Elsukov]

Jeremy Chadwick wrote:
> I believe NCQ is supported, assuming that your controller is operating
> in AHCI mode and your disk supports NCQ.  This mainly applies to Intel
> ICHx controllers, but there are others which support it as well.
> There's also NCQ support in non-AHCI drivers like hptmv(4), rr232x(4),
> hptrr(4), and mpt(4) with SATA disks.

No. ata(4) driver currently doesn't support/use NCQ.

-- 
WBR, Andrey V. Elsukov