From: Ralf Baechle <ralf@linux-mips.org>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
linux-mips@linux-mips.org
Subject: Re: RFC: [MIPS] BCM1480/BCM1480HT remove io_offset
Date: Thu, 25 Feb 2010 15:05:22 +0100 [thread overview]
Message-ID: <20100225140522.GA467@linux-mips.org> (raw)
In-Reply-To: <1267069502.8811.7.camel@dc7800.home>
On Wed, Feb 24, 2010 at 08:45:02PM -0700, Bjorn Helgaas wrote:
> Actually, you should be able to make this work with CPU I/O resources of
> your choice even if you can't control the translation. It just requires
> a little more indirection, like most computer science problems :-) On
> ia64, we map multiple I/O port spaces with arbitrary translations into a
> 0xSPPPPPP scheme (S = space number, PPPPPP = port number).
>
> But my main concern is just making sure that my IORESOURCE_PCI_FIXED
> change didn't break BCM1480, and I don't think it will.
The whole IORESOURCE_PCI_FIXED thing was created for Cobalt only and is
needed due to the discontinuity of the port address space with legacy I/O
ports in the range of 0..0x1000 and the rest starting off from 0x10000000.
No other system has such a lobotomized system controller.
Ralf
prev parent reply other threads:[~2010-02-25 14:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-24 20:38 RFC: [MIPS] BCM1480/BCM1480HT remove io_offset Bjorn Helgaas
2010-02-24 22:10 ` Thomas Bogendoerfer
2010-02-24 23:30 ` Bjorn Helgaas
2010-02-25 3:45 ` Bjorn Helgaas
2010-02-25 14:05 ` Ralf Baechle [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100225140522.GA467@linux-mips.org \
--to=ralf@linux-mips.org \
--cc=bjorn.helgaas@hp.com \
--cc=linux-mips@linux-mips.org \
--cc=tsbogend@alpha.franken.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.