* How to map addresses beyond 4GB
@ 2007-11-22 10:42 Dell Query
2007-11-23 23:23 ` Dan Malek
0 siblings, 1 reply; 3+ messages in thread
From: Dell Query @ 2007-11-22 10:42 UTC (permalink / raw)
To: linuxppc-embedded
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Hi,
I would like to ask if anyone knows how to map addresses beyond 4GB. I am trying to access the GPIO on PPC440EPx by mapping it but the address is 0x1EF600B00, which is way beyond 4GB.
May I know how to map this one?
Thanks,
dell
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to map addresses beyond 4GB
2007-11-22 10:42 How to map addresses beyond 4GB Dell Query
@ 2007-11-23 23:23 ` Dan Malek
2007-11-27 9:57 ` Dell Query
0 siblings, 1 reply; 3+ messages in thread
From: Dan Malek @ 2007-11-23 23:23 UTC (permalink / raw)
To: Dell Query; +Cc: linuxppc-embedded
On Nov 22, 2007, at 2:42 AM, Dell Query wrote:
> May I know how to map this one?
Just call ioremap() as usual. It will understand the > 4G
physical address and return a useful virtual address
to you.
-- Dan
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to map addresses beyond 4GB
2007-11-23 23:23 ` Dan Malek
@ 2007-11-27 9:57 ` Dell Query
0 siblings, 0 replies; 3+ messages in thread
From: Dell Query @ 2007-11-27 9:57 UTC (permalink / raw)
To: Dan Malek; +Cc: linuxppc-embedded
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Thanks
Dan Malek <dan@embeddedalley.com> wrote:
On Nov 22, 2007, at 2:42 AM, Dell Query wrote:
> May I know how to map this one?
Just call ioremap() as usual. It will understand the > 4G
physical address and return a useful virtual address
to you.
-- Dan
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2007-11-22 10:42 How to map addresses beyond 4GB Dell Query
2007-11-23 23:23 ` Dan Malek
2007-11-27 9:57 ` Dell Query
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