From: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
To: linuxppc-embedded <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: simple access to mem mapped peripheral
Date: Thu, 04 Oct 2001 10:02:34 +0200 [thread overview]
Message-ID: <3BBC179A.394FFD71@esd-electronics.com> (raw)
In-Reply-To: B25E2E5A003CD311B61E00902778AF2A02637AB3@SERVER1
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
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-10-04 8:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-02 14:53 simple access to mem mapped peripheral Subodh Nijsure
2001-10-04 8:02 ` Matthias Fuchs [this message]
2001-10-04 8:15 ` Pierre AUBERT
2001-10-04 10:07 ` Matthias Fuchs
2001-10-04 15:34 ` Francis Litterio
-- strict thread matches above, loose matches on Subject: below --
2001-10-02 9:02 Matthias Fuchs
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