From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3BBC179A.394FFD71@esd-electronics.com>
Date: Thu, 04 Oct 2001 10:02:34 +0200
From: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
MIME-Version: 1.0
To: linuxppc-embedded <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: simple access to mem mapped peripheral
References: <B25E2E5A003CD311B61E00902778AF2A02637AB3@SERVER1>
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Subodh Nijsure wrote:
>
> Hello,
>
> May be try this?
>
>         chip_registerbase = (unsigned
> long)ioremap_nocache(CHIP_PHYSICAL_ADDRESS,
>                         CHIP_MEM_SIZE);
>         printk("Linux kernel Memory mapped base register %lX \n",
> chip_registerbase);
>
> Then you can read and write to your chip via *chip_registerbase
>

Sorry, but I forgot to say that I need a way to access the peripheral
from userspace without writing a
kernel module. I need it only for a simple test and therefore it does
not make sense to me to write a driver.

Of course, writing a driver is not htat dirty :-)

Matthias

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