From: Sergio Ruiz <quekio@gmail.com>
To: linux-mips@linux-mips.org
Subject: How to the the physical addresses under linux (au1500)
Date: Tue, 3 May 2005 21:56:26 +0200 [thread overview]
Message-ID: <e02bc66105050312564d0dacdb@mail.gmail.com> (raw)
I am trying to program the DMA (with the ac97) in assembler using a
linux kernel module for mips teaching purposes.
The problem is that I need to get the physical address of the pointer
to the buffer to transfer to the AC97.
Looking at the kernel source code, I found that I can get the physical
address subtracting 0x8000000, but It doesnt seem to work.
Any idea?
Thanks,
Sergio
next reply other threads:[~2005-05-03 19:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-03 19:56 Sergio Ruiz [this message]
2005-05-03 20:09 ` How to the the physical addresses under linux (au1500) Dan Malek
-- strict thread matches above, loose matches on Subject: below --
2005-05-03 21:04 Sergio Ruiz
2005-05-03 21:49 ` Wolfgang Denk
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