So, there doesn't appear to be a driver for the 20378 in the kernel...
though google showed a few people using some proprietary drivers with
varying luck. Ew.

I noticed there are a lot of other Promise drivers in the kernel for the
same general line, which leads me to believe there may be some interest
in getting a 20378 driver in the kernel.

So, since I now own a machine with one, I thought I'd drop this list a
line and say "I can test stuff and provide info on the chipset"...

Specifically, I have a:

0000:02:04.0 RAID bus controller: Promise Technology, Inc. PDC20378
(FastTrak 378/SATA 378) (rev 02)
        Subsystem: Asustek Computer, Inc. PC-DL Deluxe motherboard
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
ParErr- Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 96 (1000ns min, 4500ns max), Cache Line Size: 0x91 (580
bytes)
        Interrupt: pin A routed to IRQ 11
        Region 0: I/O ports at df00 [size=64]
        Region 1: I/O ports at dfa0 [size=16]
        Region 2: I/O ports at d880 [size=128]
        Region 3: Memory at feafe000 (32-bit, non-prefetchable) [size=4K]
        Region 4: Memory at feac0000 (32-bit, non-prefetchable) [size=128K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-


Anyway, I don't know if that's any help, or if there is any interest,
but I thought I'd throw it out there.

PS, I'm not on the list, so please CC me on replies.

Thanks,
-- 
Phil Dibowitz                             phil@ipom.com
Freeware and Technical Pages              Insanity Palace of Metallica
http://www.phildev.net/                   http://www.ipom.com/

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
 - Benjamin Franklin, 1759