[Devil-Linux-discuss] FW: Devil Linux on Compacq Flash Card after upgrade from 1.3.6 to 1.4.2 ide=nodma not working anymore (solved)

[Christian H. <c.h...@en...>]

FYI

-----Original Message-----
From: Christian Höfgen 
Sent: woensdag 30 maart 2011 13:40
To: 'Serge Leschinsky'
Subject: RE: [Devil-Linux-discuss] Devil Linux on Compacq Flash Card after upgrade from 1.3.6 to 1.4.2 ide=nodma not working anymore

Hi Serge,

Thank you very much!
Although the option your suggested did not work for me, you pushed me in the right direction.

The libata.dma not working for me. But searching on libata usage, I found people have also  tried nodma=sda and ide_core.nodma=0.0 Looked it up in Kernel Documentation / ide / ide.txt And the "ide_core.nodma=0.0" worked!

	ide_core.nodma=0.0
	as is "nodma=[interface_number.device_number]" to disallow DMA for a device

Greetings,
Chris Höfgen

-----Original Message-----
From: Serge Leschinsky [mailto:ser...@gm...] On Behalf Of Serge Leschinsky
Sent: dinsdag 29 maart 2011 22:52
To: dev...@li...
Cc: Christian Höfgen
Subject: Re: [Devil-Linux-discuss] Devil Linux on Compacq Flash Card after upgrade from 1.3.6 to 1.4.2 ide=nodma not working anymore

Hi Christian,

can you please check if "libata.dma=3" works for your ( instead of "ide=nodma").
If not, you can try "libata.dma=0" - disable DMA for all pata and sata. ('=3' 
should disable it for CF only)

Docs (Documentation/kernel-parameters.txt )

	libata.dma=	[LIBATA] DMA control
			libata.dma=0	  Disable all PATA and SATA DMA
			libata.dma=1	  PATA and SATA Disk DMA only
			libata.dma=2	  ATAPI (CDROM) DMA only
			libata.dma=4	  Compact Flash DMA only

			Combinations also work, so libata.dma=3 enables DMA
			for disks and CDROMs, but not CFs.

Serge

On 03/29/2011 01:36 AM, Christian Höfgen wrote:

> I try to upgrade our Devil Linux version 1.3.6 which is installed on a 
> Compaq Flash Card  to the latest 1.4.2 version.
>
> On 1.3.6 with boot loader Grub, and parameter "ide=nodma" it workt fine.
>
> With version 1.4.2 I get DMA timeout error
>
> Getting the message "had: ide_dma_sff_timer_expired: DMA status (0x21)"
>
> Than the message "had: DMA disabled"
>
> And then the system hangs on the message "ide0: reset time-out, stutus=0x80"
>
> I am not yet so familiar with Linux.
>
> But as far as I can see it looks like Grub has not been changed. It 
> looks like the boot parameter "ide=nodma" is not picked up any more at boot time.
>
> Help would be appreciate.
>
> Greetings,
> Chris Höfgen
>
>
>
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