From: David Woodhouse <dwmw2@infradead.org>
To: akc <akc@pel.dk>
Cc: mtd@infradead.org
Subject: Re: Problem accessing physical memory...
Date: Thu, 29 Jun 2000 15:16:06 +0100 [thread overview]
Message-ID: <29551.962288166@cygnus.co.uk> (raw)
In-Reply-To: <395B574E.CD20E7C2@pel.dk>
akc@pel.dk said:
> I've tried mtdram and it works, but I am going to make a flash driver
> and need access to physical memory.
Ignore slram which I haven't even looked at for months, and look at nora.c
Once we've coded up support for the various kinds of flash chips, all
you'll need to do is provide the mmap access functions defined in
linux/mtd/map.h
ISTR something about PPC falling over if you try a large ioremap() because
it doesn't have a lot of spare VM space. Try smaller dynamic mappings
rather than mapping the whole lot all at once.
--
dwmw2
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prev parent reply other threads:[~2000-06-29 14:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-29 14:03 Problem accessing physical memory akc
2000-06-29 14:16 ` David Woodhouse [this message]
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