Re: Again... DMA speed too slow

[Tejun Heo]

Andrew Morton wrote:
> On Sun, 30 Mar 2008 23:53:57 +0200 "J.A. Magallón" <jamagallon@xxxxxxx> wrote:
>
> > Hi all...
> >
> > I have tried to burn some data from the commandline with wodim (since time
> > ago I just used beasero...), and I have noticed this (media is CD, not DVD):
> >
> > Vendor_info    : 'HL-DT-ST'
> > Identification : 'DVDRAM GSA-H10N '
> > Revision       : 'JL12'
> > Device seems to be: Generic mmc2 DVD-R/DVD-RW.
> > Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
> > Driver flags   : MMC-3 SWABAUDIO BURNFREE
> > Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
> > Speed set to 8467 KB/s
> > wodim: DMA speed too slow (OK for 5x). Cannot write at speed 48x.
> > Starting to write CD/DVD at speed  48.0 in real TAO mode for single session.
> >
> > I just can burn CDs at 5x ??
> > But then the program tries to write at 48x.
> > It the DMA message really true ?

Which controller are you on?  I bet the recording itself will work fine 
on 48x.  It's probably that READ/WRITE BUFFERs are executed using PIO 
for compatibility reasons.

--
tejun
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