From owner-freebsd-hackers  Wed Sep  2 18:59:43 1998
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From: Kevin Day <toasty@home.dragondata.com>
Message-Id: <199809030158.UAA16855@home.dragondata.com>
Subject: Memory Mapped IO
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Date: Wed, 2 Sep 1998 20:58:37 -0500 (CDT)
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Suppose from userland I want to access a chunk of physical ram directly.....
I have a device that maps some ram at 0x40000000 through 0x40010000. I know
I can talk to it directly through /dev/mem, but is there an easier way?

(i.e. I'd like to be able to directly access that piece of ram, somehow)

Can this be done? If so, what am I missing?


(as a side note, would mmap'ing the appropriate section of /dev/mem even
work?)

Kevin

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