From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4047B907.5070902@embeddededge.com>
Date: Thu, 04 Mar 2004 18:17:27 -0500
From: Dan Malek <dan@embeddededge.com>
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To: Richard Williams <richard_williams@stratexnet.com>
Cc: Steven Scholz <steven.scholz@imc-berlin.de>,
	LinuxPPC <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: uncached user space mapping with mmap() ???
References: <A3240F62EF3C2749B1A25D3BC9548F4103EED2@ExchWENZ02.wenz.global.vpn>
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Richard Williams wrote:

> I just tried this using pread....

No, no.

Open /dev/mem and use mmap() to map your physical address:

   mmap(NULL, <page_size_bytes>, (PROT_READ|PROT_WRITE), MAP_SHARED, mem_fd, phys_addr);


Then, use the pointer returned from mmap() as the base of your
registers.


	-- Dan


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