intel D865PERL and DMA for disks (IDE)?

intel D865PERL and DMA for disks (IDE)?

[Erik Steffl]

   I am trying to set the DMA for ide disks but get the following error:

   jojda:/home/erik# hdparm -d 1 /dev/hda

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

   is it because it's not supported on given chipset or is there 
something I can do?

   debian unstable
   2.4.21-ac4 (+ libata5 patches from Jeff Garzik)
   Intel D865PERL motherboard

   there are only two kernel options that I can see are relevant to 
chipset I use:

CONFIG_BLK_DEV_PIIX=m
CONFIG_SCSI_ATA_PIIX=y

   TIA

	erik

Re: intel D865PERL and DMA for disks (IDE)?

[Bartlomiej Zolnierkiewicz]

On Saturday 13 of September 2003 02:19, Erik Steffl wrote:
>    I am trying to set the DMA for ide disks but get the following error:
>
>    jojda:/home/erik# hdparm -d 1 /dev/hda
>
> /dev/hda:
>   setting using_dma to 1 (on)
>   HDIO_SET_DMA failed: Operation not permitted
>   using_dma    =  0 (off)
>
>    is it because it's not supported on given chipset or is there
> something I can do?
>
>    debian unstable
>    2.4.21-ac4 (+ libata5 patches from Jeff Garzik)
>    Intel D865PERL motherboard
>
>    there are only two kernel options that I can see are relevant to
> chipset I use:
>
> CONFIG_BLK_DEV_PIIX=m
> CONFIG_SCSI_ATA_PIIX=y

You should use CONFIG_BLK_DEV_PIIX=y
or load piix module (may not be reliable).

>    TIA
>
> 	erik

Re: intel D865PERL and DMA for disks (IDE)?

[Erik Steffl]

Bartlomiej Zolnierkiewicz wrote:
> On Saturday 13 of September 2003 02:19, Erik Steffl wrote:
... Intel D965PERL and hdparm -d 1 ...
>>CONFIG_BLK_DEV_PIIX=m
>>CONFIG_SCSI_ATA_PIIX=y
> 
> 
> You should use CONFIG_BLK_DEV_PIIX=y
> or load piix module (may not be reliable).

   wow:

jojda:/home/erik# modprobe piix
Segmentation fault

   lsmod | grep piix

piix                    7976   1  (initializing)

   rmmod piix

piix: Device or resource busy

   I guess I'll try to compile it in. thanks,

	erik

SOLVED Re: intel D865PERL and DMA for disks (IDE)?

[Erik Steffl]

Erik Steffl wrote:
> Bartlomiej Zolnierkiewicz wrote:
> 
>> On Saturday 13 of September 2003 02:19, Erik Steffl wrote:
> 
> ... Intel D965PERL and hdparm -d 1 ...
> 
>>> CONFIG_BLK_DEV_PIIX=m
>>> CONFIG_SCSI_ATA_PIIX=y
>>
>> You should use CONFIG_BLK_DEV_PIIX=y
>> or load piix module (may not be reliable).
> 
>   wow:
> 
> jojda:/home/erik# modprobe piix
> Segmentation fault
> 
>   lsmod | grep piix
> 
> piix                    7976   1  (initializing)
> 
>   rmmod piix
> 
> piix: Device or resource busy
> 
>   I guess I'll try to compile it in. thanks,

   in addition to the above it _seems_ that trying to modprobe piix 
caused netstat -ni to freeze (and so e.g. mozilla and evolution stopped 
working, but not konqueror, pan ...)

   I changed CONFIG_BLK_DEV_PIIX to y and it's working fine, so far (ide 
disks use dma).

	erik