From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hs-out-2122.google.com (hs-out-0708.google.com [64.233.178.250]) by ozlabs.org (Postfix) with ESMTP id A805CDDE2A for ; Mon, 31 Dec 2007 22:57:13 +1100 (EST) Received: by hs-out-2122.google.com with SMTP id x43so3798172hsb.9 for ; Mon, 31 Dec 2007 03:57:12 -0800 (PST) Message-ID: Date: Mon, 31 Dec 2007 19:57:12 +0800 From: "Jeyner Gil Caga" To: "Misbah khan" , linuxppc-embedded@ozlabs.org Subject: Re: How to do IO mapped Implimentation ??? In-Reply-To: <14555864.post@talk.nabble.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_3425_18323825.1199102232343" References: <14522349.post@talk.nabble.com> <14555864.post@talk.nabble.com> List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , ------=_Part_3425_18323825.1199102232343 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hmmm, I have not touched ppc8248 before, but I guess it will work since it is only 1 byte, not 2 or 4 byte access. I have used it in ppc 440epx, and that eval board is big endian as well. On 12/31/07, Misbah khan wrote: > > > I have used in_be32() and out_be32() for ppc8248 in one of my driver for > FPGA > in which the fpga memory is mapped here it is Io mapped thats the only > difference ....remapping and using in_8() and out_8() will it work for > BigEndian arch ???? > > -----Misbah <>< > > > Misbah khan wrote: > > > > Hi all... > > > > I am writing a driver in which device port is mapped to CPLD and 8 bit > > data bus is directly connected from processor to CPLD. Read write on > CPLD > > memory mapped (buffer/register) is required to control the device. This > is > > now IO mapped to processor. > > > > I need to know whether i am right if i impliment like this :- > > addr=ioremap(base_addr); // Remap to Mem mapped > address > > outb(addr) and inb(addr); > > > > Please suggest me if i am wrong or there could be better solution to > this > > . > > > > -----Misbah <>< > > > > > > -- > View this message in context: > http://www.nabble.com/How-to-do-IO-mapped-Implimentation-----tp14522349p14555864.html > Sent from the linuxppc-embedded mailing list archive at Nabble.com. > > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > ------=_Part_3425_18323825.1199102232343 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hmmm, I have not touched ppc8248 before, but I guess it will work since it is only 1 byte, not 2 or 4 byte access. I have used it in ppc 440epx, and that eval board is big endian as well.

On 12/31/07, Misbah khan <misbah_khan@engineer.com> wrote:

I have used in_be32() and out_be32() for ppc8248 in one of my driver for FPGA
in which the fpga memory is mapped here it is Io mapped thats the only
difference ....remapping and using in_8() and out_8() will it work for
BigEndian arch ????

-----Misbah <><

Misbah khan wrote:
>
> Hi all...
>
> I am writing a driver in which device port is mapped to CPLD and 8 bit
> data bus is directly connected from processor to CPLD. Read write on CPLD
> memory mapped (buffer/register) is required to control the device. This is
> now IO mapped to processor.
>
> I need to know whether i am right if i impliment like this :-
> addr=ioremap(base_addr); // Remap to Mem mapped address
> outb(addr) and inb(addr);
>
> Please suggest me if i am wrong or there could be better solution to this
> .
>
> -----Misbah <><
>
>

--
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