* IDE and PCI
@ 2005-04-12 10:14 Marco Schramel
2005-04-12 10:36 ` Marcin Dawidowicz
0 siblings, 1 reply; 2+ messages in thread
From: Marco Schramel @ 2005-04-12 10:14 UTC (permalink / raw)
To: PPC_LINUX
Hi
we runs a 2.4.25 on a custum board (MPC8270). We use compact flash over UPM. All runs fine.
But if i config in the pci bus the i/o accesses on compact flash will fail. The kernel booting fails and it hangs up.
At the same time i can read out the cf registers with bdi.
It crashes on the first INB() call in ide_probe.c. "stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);". Without pci it works fine.
Any ideas?
Thanks in advance
Marco
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: IDE and PCI
2005-04-12 10:14 IDE and PCI Marco Schramel
@ 2005-04-12 10:36 ` Marcin Dawidowicz
0 siblings, 0 replies; 2+ messages in thread
From: Marcin Dawidowicz @ 2005-04-12 10:36 UTC (permalink / raw)
To: linuxppc-embedded
Hi,
On Tuesday 12 of April 2005 12:14, Marco Schramel wrote:
> Hi
>
> we runs a 2.4.25 on a custum board (MPC8270). We use compact flash over
> UPM. All runs fine. But if i config in the pci bus the i/o accesses on
> compact flash will fail. The kernel booting fails and it hangs up. At the
> same time i can read out the cf registers with bdi.
> It crashes on the first INB() call in ide_probe.c. "stat =
> hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);". Without pci it works fine.
Propably isa_io_base is set to beginning of PCI IO area when PCI is enabled.
So all io accesses are mapped in different location. In this case you may
need to add additional offset to default io port addresses for compact flash
access.
Best regards,
Marcin
^ permalink raw reply [flat|nested] 2+ messages in thread
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2005-04-12 10:14 IDE and PCI Marco Schramel
2005-04-12 10:36 ` Marcin Dawidowicz
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