[SOLVED] hdd dma is off

[mixs]

Hello,
I install Gentoo on my P4 box, but now i have one problem. I have 2 IDE disks, but for both dma is off. How can i get DMA on?

# hdparm /dev/hdc

/dev/hdc:
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 = 19457/255/63, sectors = 312581808, start = 0


# lspci
00:00.0 Host bridge: Intel Corporation 82845 845 (Brookdale) Chipset Host Bridge (rev 04)
00:01.0 PCI bridge: Intel Corporation 82845 845 (Brookdale) Chipset AGP Bridge (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 05)
00:1f.0 ISA bridge: Intel Corporation 82801BA ISA Bridge (LPC) (rev 05)
00:1f.1 IDE interface: Intel Corporation 82801BA IDE U100 Controller (rev 05)
00:1f.2 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 05)
00:1f.3 SMBus: Intel Corporation 82801BA/BAM SMBus Controller (rev 05)
00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 05)
01:00.0 VGA compatible controller: nVidia Corporation NV28 [GeForce4 Ti 4200 AGP 8x] (rev a1)
02:09.0 Network controller: Compaq Computer Corporation Netelligent 10/100 TX PCI UTP (rev 10)
02:0a.0 Multimedia audio controller: Creative Labs SB Audigy (rev 03)
02:0a.1 Input device controller: Creative Labs SB Audigy Game Port (rev 03)
02:0a.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port

# hdparm -tT /dev/hda

/dev/hda:
Timing cached reads: 718 MB in 2.00 seconds = 358.58 MB/sec
Timing buffered disk reads: 12 MB in 3.56 seconds = 3.37 MB/sec



I use kernel 2.6.24-gentoo-r3

I think mybe it is kernel configuration problem, but i cannot find good configuration to solve this problem.

[barbar]

Check if your kernel has:

[mixs]

hdparm -i /dev/hdc

/dev/hdc:

Model=WDC WD1600JB-00EVA0, FwRev=15.05R15, SerialNo=WD-WMAEH1964366
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=74
BuffType=DualPortCache, BuffSize=8192kB, 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
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6

* signifies the current active mode

~ # hdparm -d1 -X udma2 /dev/hdc

/dev/hdc:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 66 (UltraDMA mode2)
using_dma = 0 (off)

~ # hdparm /dev/hdc

/dev/hdc:
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 = 19457/255/63, sectors = 312581808, start = 0

[mixs]

Thanks
Now i have dma on.

I need to compile kernel with this option:

<*> Intel PIIXn chipsets support


Now it is much better:

/dev/hdc:
Timing cached reads: 784 MB in 2.00 seconds = 391.64 MB/sec
Timing buffered disk reads: 82 MB in 3.02 seconds = 27.18 MB/sec

[d2_racing]

Nice, know you have some power to compile your Gentoo

[Skuromis]

Hi,

for me it doesn't work that easy.
I have both options in my kernel, but still no dma for my HDD.

[barbar]

Do you have the same chipset? Check with lspci.

[d2_racing]

Yeah can you post your lspci plz ?

[Skuromis]

Hi again,

back to my PC and here my lspci:

[d2_racing]

no, you have a ICH8, so you need to have it inside the SATA-PATA section.

You need theses options :

[Skuromis]

Thank you, unfortunately it didn't work either... or did I do something else wrong.

What about this option?