Hi there!

I'm using slack 10.2 with 2.6.14.

I enabled DMA acc. in Device Drivers->ATA/ATAPI/MFM/RLL: [*]Generic PCI bus-master DMA Support[*]Use PCI DMA by default when available

However, by using "hdparm -d1 /dev/hda" an:
-----------------------------------------------------------
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
-----------------------------------------------------------
err message is returned...

Unfortunately, I didn't find any satisfying answer to my question out there. I got a seagate disk...

Any idea?


Thanks in advance!

Phew, it's ok now.

I had activated support for a different chipset *urg*

hey all

i've got an inspiron 9300 with hitachi 7200rpm 60gb and slackware 10.2 does not want to enable the dma on this hdd

it says

# hdparm -d1 /dev/hda

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

thanks for help

you have to recompile the kernel and compile your specific IDE chipset driver into the kernel.

I realise it must be a chipset thing now, but I have no idea what kernel options to configure it. I have the generic use PCI DMA by default option on, but I'm sure what else.

Would compiling every chipset driver into the kernel be an option?

cat /proc/ide/hda/driver returns "ide-disk version 1.18". cat /proc/ide/ide0/model returns "cat /proc/ide/ide0/model
". Should I be having another driver? Why doesn't the generic driver suffice? I *can't* seem to find one specifically for my chipset, because I'm clueless.

I have a TOSHIBA MK6021GAS.

Tryto see what chipset the ide uses

I spotted this line

"00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA Storage Controller (rev 03)"

Okay I got it now. I realised that the chipset driver wasn't specific to the disk but the controller (ICH-4), then I amended the appropriate kernel option. Thanks!

Yep. Has to be chipset for the controller.

Learned new stuff today, eh?