linux-kernel - [QUESTION] outl and writel endianity

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Date:	Thu, 08 Mar 2007 17:38:22 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: [QUESTION] outl and writel endianity

Hi.

If I use outl everything seems to be OK. Is there any difference in endianity 
between outl and writel (or iowrite32, which calls writel, I guess).

When I do
outl(val, p->ibase + 4*off);
everyhting is OK, but when I do
writel(val, p->iaddr + off);
bad value is written unless I use cpu_to_be32(val) (or swap32).

this is what p struct contains:
         u32 __iomem *iaddr;
         unsigned long ibase;
and this, how it is initialized:
         p->ibase = pci_resource_start(pdev, 2);
         p->iaddr = pci_iomap(pdev, 2, 0);

What's the proper use of this? iowrite32be seems to work too.

thanks,
-- 
http://www.fi.muni.cz/~xslaby/            Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8  22A0 32CC 55C3 39D4 7A7E
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