Počasen disk v Gentoo -> nedelujoč DMA

Na Gentoo sistemu imam na secondary kanal priklopljen IDE disk, ki pa je izjemno počasen. Rezultati hdparm:

jade ~ # hdparm -t /dev/hdd

/dev/hdd:
Timing buffered disk reads: 8 MB in 3.05 seconds = 2.62 MB/sec


jade ~ # hdparm -i /dev/hdd

/dev/hdd:

Model=Maxtor 7Y250P0, FwRev=YAR41BW0, SerialNo=Y63AQ6XE
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7

* signifies the current active mode


jade ~ # hdparm /dev/hdd

/dev/hdd:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 30515/255/63, sectors = 490234752, start = 0


jade ~ # hdparm -d 1 /dev/hdd

/dev/hdd:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)


Kaže, da ne morem vklopiti DMA. Tukaj piše, da bi bilo potrebno vključiti chipset podporo v kernel, ne pa kot modul. Lspci mi izpiše ta ide konroler: 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)


Ko v genkernel poskušam vključiti Intel 440LX/BX/GX, I8xx and E7x05 chipset support (če je to pravi), mi ne pusti "This feature depends on another which has been configured as a module. As a result, this feature will be built as a module."

Kakršnakoli pomoč bi bila dobrodošla.