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SubjectRe: PDC20268 UDMA troubles
Andre,

I swapped out the pdc20268 with a pdc20267, for a total of 2 pdc20267's.
Now all drives will do udma5, no problem. Do you know why the pdc20268's
don't play nice with other ide chipsets (AMD 7411 & pdc20267)?

thanks,

--
Sean J. Swallow
pgp (6.5.2) keyfile @ https://nurk.org/keyfile.txt


On Fri, 5 Oct 2001, Andre Hedrick wrote:

> On Fri, 5 Oct 2001, Sean Swallow wrote:
>
> > Andre,
> >
> > Thank you for the reply.
> >
> > I was wondering if both controllers (PDC20268 and PDC20267) should show up
> > when I cat /proc/ide/pdc202xx ?
> >
> > I'm not disabling the BURST_BIT, I think the driver is, but only on the
> > second card. Thus, I can't get udma5 on all 4 chains.
> >
> > This is from dmesg:
> >
> > PDC20267: IDE controller on PCI bus 00 dev 40
> > PDC20267: chipset revision 2
> > PDC20267: not 100% native mode: will probe irqs later
> > PDC20267: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
> > ide2: BM-DMA at 0x1080-0x1087, BIOS settings: hde:DMA, hdf:pio
> > ide3: BM-DMA at 0x1088-0x108f, BIOS settings: hdg:DMA, hdh:pio
> > PDC20268: IDE controller on PCI bus 00 dev 50
> > PDC20268: chipset revision 2
> > PDC20268: not 100% native mode: will probe irqs later
> > PDC20268: (U)DMA Burst Bit DISABLED Primary MASTER Mode Secondary MASTER
> > Mode.
> > ide4: BM-DMA at 0x10d0-0x10d7, BIOS settings: hdi:pio, hdj:pio
> > ide5: BM-DMA at 0x10d8-0x10df, BIOS settings: hdk:pio, hdl:pio
> >
> > Let me know if you need more information.
> >
> > cheers,
> >
> > --
> > Sean J. Swallow
> > pgp (6.5.2) keyfile @ https://nurk.org/keyfile.txt
> >
> >
> > On Thu, 4 Oct 2001 andre@linux-ide.org wrote:
> >
> > >
> > > There is nothing wrong with the procfs.
> > > The HOST performs a sense mode on the contents of the taskfile registers
> > > when loading a setfeature to change the transfer rate. Mode 5 is the
> > > same
> > > timings as Mode 4; however, the internal base clocks are different.
> > >
> > > Also why are we disabling the BUSRT BIT?
> > >
> > >
> >
>
> The procfs api does not parse several cards at this time.
>
> Cheers,
>
> Andre Hedrick
> CTO ASL, Inc.
> Linux ATA Development
> -----------------------------------------------------------------------------
> ASL, Inc. Tel: (510) 857-0055 x103
> 38875 Cherry Street Fax: (510) 857-0010
> Newark, CA 94560 Web: www.aslab.com
>
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