From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
Cc: Mike Turquette
<mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
David Riley <davidriley-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Alexandre Courbot
<gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Peter De Schrijver
<pdeschrijver-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH v6 05/12] memory: Add NVIDIA Tegra memory controller support
Date: Wed, 12 Nov 2014 15:47:16 +0100 [thread overview]
Message-ID: <20141112144715.GD26488@ulmo> (raw)
In-Reply-To: <20141112142150.GV10744-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 773 bytes --]
On Wed, Nov 12, 2014 at 03:21:50PM +0100, Joerg Roedel wrote:
> On Fri, Nov 07, 2014 at 05:00:56PM +0100, Thierry Reding wrote:
> > drivers/iommu/tegra-smmu.c | 1295 ------------------------------
> > drivers/memory/tegra/smmu.c | 716 +++++++++++++++++
>
> This new smmu.c is an IOMMU driver, why do you put it in drivers/memory
> and not in drivers/iommu?
The SMMU is part of a larger IP block that's also a memory controller.
Having it in drivers/iommu would mean that we need to provide a
mechanism to synchronize between the two drivers. They also share a
number of data tables, so that would need to be shared somehow as well.
By keeping both in the same directory we don't have to expose any of
this publicly.
Thierry
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next prev parent reply other threads:[~2014-11-12 14:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-07 16:00 [PATCH v6 00/12] NVIDIA Tegra memory controller and IOMMU support Thierry Reding
[not found] ` <1415376063-17205-1-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-11-07 16:00 ` [PATCH v6 01/12] clk: tegra: Implement memory-controller clock Thierry Reding
2014-11-07 16:00 ` [PATCH v6 02/12] amba: Add Kconfig file Thierry Reding
2014-11-07 16:00 ` [PATCH v6 03/12] ARM: tegra: Move AHB Kconfig to drivers/amba Thierry Reding
2014-11-07 16:00 ` [PATCH v6 04/12] of: Add NVIDIA Tegra memory controller binding Thierry Reding
2014-11-07 16:00 ` [PATCH v6 05/12] memory: Add NVIDIA Tegra memory controller support Thierry Reding
[not found] ` <1415376063-17205-6-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-11-12 14:21 ` Joerg Roedel
[not found] ` <20141112142150.GV10744-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-11-12 14:47 ` Thierry Reding [this message]
2014-11-12 15:02 ` Joerg Roedel
[not found] ` <20141112150233.GW10744-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-11-12 15:09 ` Thierry Reding
2014-11-07 16:00 ` [PATCH v6 06/12] ARM: tegra: Add memory controller support for Tegra30 Thierry Reding
2014-11-07 16:00 ` [PATCH v6 07/12] ARM: tegra: Add memory controller support for Tegra114 Thierry Reding
2014-11-07 16:00 ` [PATCH v6 08/12] ARM: tegra: Add memory controller support for Tegra124 Thierry Reding
2014-11-07 16:01 ` [PATCH v6 09/12] ARM: tegra: Enable IOMMU for display controllers on Tegra30 Thierry Reding
2014-11-07 16:01 ` [PATCH v6 10/12] ARM: tegra: Enable IOMMU for display controllers on Tegra114 Thierry Reding
2014-11-07 16:01 ` [PATCH v6 11/12] ARM: tegra: Enable IOMMU for display controllers on Tegra124 Thierry Reding
2014-11-07 16:01 ` [PATCH v6 12/12] memory: tegra: Add Tegra132 support Thierry Reding
2014-11-10 9:53 ` [PATCH v6 00/12] NVIDIA Tegra memory controller and IOMMU support Alexandre Courbot
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