nForce 790i/MCP55: sata-nv or ahci ?

["J.A. Magallón" <jamagallon@ono.com>]

Hi all...

I have read that modern nVidia SATA's are AHCI. But several distros I have
tried use the sata-nv module for that chipset controller (MCP55).
Is this correct or should I use standard ahci ? Anyways, it looks that the
kernel/modprobe settings use this, can I change it via kernel cmdline
or modprobe.conf, and force the system to try ahci module ?
By BIOS has no kind of setting to put the controlled in AHCI vs SATA mode...
Playing with alias pci:v000010DEd0000037Fsv*sd*bc*sc*i* ?

wargo:~> lspci -s 00:0e
00:0e.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:0e.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:0e.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
wargo:~> lspci -ns 00:0e
00:0e.0 0101: 10de:037f (rev a3)
00:0e.1 0101: 10de:037f (rev a3)
00:0e.2 0101: 10de:037f (rev a3)

TIA

-- 
J.A. Magallon <jamagallon()ono!com>     \               Software is like sex:
                                         \         It's better when it's free
Mandriva Linux release 2009.1 (Cooker) for x86_64
Linux 2.6.27.5-desktop-1mnb (gcc 4.3.2 (GCC) #1 Sun Nov