Intel 82801GB/GR/GH (ICH7 Family) SATA AHCI Controller driver for linux-2.6.9

Hi;
Due to my clearcase linux thin client version which comes with
mvfs module that is built against linux-2.6.9 kernel headers, I have to
use this version of linux kernel on my workstation which uses Intel
82801GBM SATA AHCI Controller for harddisks. Linux-2.6.9 does not have
the driver for the chipset. I have searched packages.debian.org and
googled for it but I can't find it. Can anyone here give me some
pointers where I could download the driver source/module for this intel
sata chipset?

0000:00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE
Controller (rev 01) (prog-if 8a [Master SecP PriP])
Subsystem: Dell: Unknown device 01ad
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
SERR-
Region 1: I/O ports at
Region 2: I/O ports at
Region 3: I/O ports at
Region 4: I/O ports at ffa0 [=16]

0000:00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7
Family) Serial ATA Storage Controllers cc=IDE (rev 01) (prog-if 8f
[Master SecP SecO PriP PriO])
Subsystem: Dell: Unknown device 01ad
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
SERR-

Any insight is appreciated. Thanks.

Regards,
Kok How