From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/6] ARM: bcm476x: Add infrastructure
Date: Fri, 12 Oct 2012 10:48:24 +0000 [thread overview]
Message-ID: <201210121048.24998.arnd@arndb.de> (raw)
In-Reply-To: <20121012101252.6c3b7dce@skate>
On Friday 12 October 2012, Thomas Petazzoni wrote:
> On Fri, 12 Oct 2012 08:03:54 +0000, Arnd Bergmann wrote:
>
> > I would certainly like to see this, yes. I had a patch for it ages
> > ago, but would start over again if I did this now.
> >
> > I don't have time to do the conversion at the moment, but I would
> > certainly welcome a patch that does it. I can give some details about
> > the problems with that and how I think they should be solved.
>
> I did start working on such a patch a few weeks ago, but converting all
> the platforms to use IOMEM() was really boring. But now you did that, I
> can try to revive my patch, see if it works, and post it if you're
> interested.
Ok, cool!
The main thing to watch out for are mappings that are not for MMIO,
such as the call to create_mapping() in map_lowmem() or in
devicemaps_init().
I would suggest making struct map_desc specific to callers of
iotable_init() and changing the prototype for create_mapping() to
void __init create_mapping(unsigned long virtual, unsigned long pfn,
size_t length, unsigned int type);
That means we still need to add one type cast in iotable_init(), but
everything else should become simpler. There are a few instances in
platform code that use MT_MEMORY rather MT_DEVICE. At least the TCM
one should not really be __iomem, but I'm not sure about the various
TI SRAM locations. Probably doesn't matter all that much for those.
Arnd
next prev parent reply other threads:[~2012-10-12 10:48 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-07 1:53 [PATCH 0/6] ARM: Add support for Broadcom BCM476x SoCs Domenico Andreoli
2012-10-07 1:53 ` [PATCH 1/6] ARM: bcm476x: Add infrastructure Domenico Andreoli
2012-10-07 19:57 ` Jean-Christophe PLAGNIOL-VILLARD
2012-10-07 22:54 ` Domenico Andreoli
2012-10-08 13:13 ` Jean-Christophe PLAGNIOL-VILLARD
2012-10-09 2:37 ` Stephen Warren
2012-10-09 11:50 ` Domenico Andreoli
2012-10-08 11:50 ` Florian Fainelli
2012-10-09 2:41 ` Stephen Warren
2012-10-08 12:14 ` Thomas Petazzoni
2012-10-09 11:52 ` Domenico Andreoli
2012-10-09 2:48 ` Stephen Warren
2012-10-09 11:54 ` Domenico Andreoli
2012-10-09 3:08 ` Stephen Warren
2012-10-09 11:55 ` Domenico Andreoli
2012-10-09 9:18 ` Arnd Bergmann
2012-10-09 22:58 ` Domenico Andreoli
2012-10-10 6:29 ` Arnd Bergmann
2012-10-12 7:06 ` Domenico Andreoli
2012-10-12 7:26 ` Thomas Petazzoni
2012-10-12 8:03 ` Arnd Bergmann
2012-10-12 8:12 ` Thomas Petazzoni
2012-10-12 10:48 ` Arnd Bergmann [this message]
2012-10-12 11:01 ` Thomas Petazzoni
2012-10-12 11:17 ` Arnd Bergmann
2012-10-07 1:53 ` [PATCH 2/6] ARM: bcm476x: Add system timer Domenico Andreoli
2012-10-08 11:50 ` Florian Fainelli
2012-10-09 2:43 ` Stephen Warren
2012-10-09 23:04 ` Domenico Andreoli
2012-10-07 1:53 ` [PATCH 3/6] ARM: bcm476x: Add sched clock Domenico Andreoli
2012-10-09 2:54 ` Stephen Warren
2012-10-07 1:53 ` [PATCH 4/6] ARM: bcm476x: Add stub clock driver Domenico Andreoli
2012-10-09 3:00 ` Stephen Warren
2012-10-12 14:52 ` Mike Turquette
2012-10-12 15:28 ` Domenico Andreoli
2012-10-07 1:53 ` [PATCH 5/6] ARM: bcm476x: Add restart hook Domenico Andreoli
2012-10-07 1:53 ` [PATCH 6/6] ARM: bcm476x: Instantiate console UART Domenico Andreoli
2012-10-07 20:03 ` Jean-Christophe PLAGNIOL-VILLARD
2012-10-07 23:14 ` Domenico Andreoli
2012-10-09 3:06 ` Stephen Warren
2012-10-09 23:37 ` Domenico Andreoli
2012-10-07 5:22 ` [PATCH 0/6] ARM: Add support for Broadcom BCM476x SoCs Stephen Warren
2012-10-07 10:14 ` Domenico Andreoli
2012-10-09 2:44 ` Stephen Warren
2012-10-09 23:57 ` Domenico Andreoli
2012-10-07 19:47 ` Olof Johansson
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