From: Pierre Ossman <drzeus-list@drzeus.cx>
To: linux-kernel@vger.kernel.org
Subject: ISA DMA
Date: Wed, 08 Sep 2004 23:28:00 +0200 [thread overview]
Message-ID: <413F7960.8070500@drzeus.cx> (raw)
I'm trying to figure out how to do ISA DMA transfers. I can't figure out
how to satisfy all the requirements the ISA DMA controller sets. I've
set a DMA mask of 0x00ffffff but mappings end up above the 16MB limit
nonetheless. And I have no idea how to keep transfers within the same
64k boundary.
I've been trying to figure out how other drivers do it but I can't see
what I'm missing. And the documentation doesn't cover ISA DMA.
I'm basically stuck now so I'd appreciate any tips you can give me.
Rgds
Pierre Ossman
next reply other threads:[~2004-09-08 21:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-08 21:28 Pierre Ossman [this message]
2004-09-08 22:27 ` ISA DMA Alan Cox
2004-09-09 15:14 ` Pierre Ossman
2004-09-08 22:54 ` Tommy Reynolds
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