From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
Paul Walmsley <pwalmsley-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Rhyland Klein <rklein-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>,
Dave Martin <Dave.Martin-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Grant Grundler <grundler-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Allen Martin <amartin-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Cho KyongHo <pullip.cho-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Subject: Re: [RFC 01/10] iommu: Add IOMMU device registry
Date: Fri, 4 Jul 2014 13:05:30 +0200 [thread overview]
Message-ID: <20140704110529.GF13434@8bytes.org> (raw)
In-Reply-To: <1403815790-8548-2-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On Thu, Jun 26, 2014 at 10:49:41PM +0200, Thierry Reding wrote:
> Add an IOMMU device registry for drivers to register with and implement
> a method for users of the IOMMU API to attach to an IOMMU device. This
> allows to support deferred probing and gives the IOMMU API a convenient
> hook to perform early initialization of a device if necessary.
Can you elaborate on why exactly you need this? The IOMMU-API is
designed to hide any details from the user about the available IOMMUs in
the system and which IOMMU handles which device. This looks like it is
going in a completly different direction from that.
Joerg
next prev parent reply other threads:[~2014-07-04 11:05 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-26 20:49 [RFC 00/10] Add NVIDIA Tegra124 IOMMU support Thierry Reding
[not found] ` <1403815790-8548-1-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-26 20:49 ` [RFC 01/10] iommu: Add IOMMU device registry Thierry Reding
[not found] ` <1403815790-8548-2-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-27 6:58 ` Thierry Reding
2014-07-03 10:37 ` Varun Sethi
2014-07-04 11:05 ` Joerg Roedel [this message]
[not found] ` <20140704110529.GF13434-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2014-07-04 13:47 ` Thierry Reding
2014-07-04 13:49 ` Will Deacon
[not found] ` <20140704134928.GA25714-5wv7dgnIgG8@public.gmane.org>
2014-07-06 18:17 ` Arnd Bergmann
[not found] ` <201407062017.23049.arnd-r2nGTMty4D4@public.gmane.org>
2014-07-07 11:42 ` Thierry Reding
2014-06-26 20:49 ` [PATCH v3 02/10] devicetree: Add generic IOMMU device tree bindings Thierry Reding
[not found] ` <1403815790-8548-3-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-27 13:55 ` Will Deacon
2014-06-30 22:24 ` Stephen Warren
2014-07-04 6:42 ` Varun Sethi
[not found] ` <9ffe3c3871ef4b60a955259bfa0bed6c-AZ66ij2kwaacCcN9WK45f+O6mTEJWrR4XA4E9RH9d+qIuWR1G4zioA@public.gmane.org>
2014-07-04 9:05 ` Arnd Bergmann
2014-06-26 20:49 ` [RFC 03/10] of: Add NVIDIA Tegra124 memory controller binding Thierry Reding
2014-06-26 20:49 ` [RFC 04/10] memory: Add Tegra124 memory controller support Thierry Reding
[not found] ` <1403815790-8548-5-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-27 7:41 ` Joseph Lo
[not found] ` <53AD2020.1050802-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-06-27 8:17 ` Thierry Reding
2014-06-27 8:24 ` Hiroshi Doyu
2014-06-27 9:46 ` Hiroshi DOyu
[not found] ` <20140627124638.7ec150cca163c89727b8953f-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-06-27 11:08 ` Thierry Reding
2014-06-27 21:33 ` Stephen Warren
2014-06-27 11:07 ` Arnd Bergmann
2014-06-27 11:15 ` Thierry Reding
2014-06-27 21:37 ` Stephen Warren
2014-06-30 22:43 ` Stephen Warren
2014-07-01 12:14 ` Hiroshi Doyu
2014-06-27 13:29 ` Mikko Perttunen
2014-06-26 20:49 ` [RFC 05/10] ARM: tegra: Add memory controller on Tegra124 Thierry Reding
2014-06-26 20:49 ` [RFC 06/10] ARM: tegra: tegra124: Enable IOMMU for display controllers Thierry Reding
2014-06-26 20:49 ` [RFC 07/10] ARM: tegra: tegra124: Enable IOMMU for SDMMC controllers Thierry Reding
2014-06-26 20:49 ` [RFC 08/10] ARM: tegra: Select ARM_DMA_USE_IOMMU Thierry Reding
2014-06-26 20:49 ` [RFC 09/10] drm/tegra: Add IOMMU support Thierry Reding
[not found] ` <1403815790-8548-10-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-27 9:46 ` Hiroshi DOyu
[not found] ` <20140627124614.050be2e406a4b9a02d9fe97c-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-06-27 10:54 ` Arnd Bergmann
2014-06-27 11:03 ` Hiroshi Doyu
2014-06-27 10:58 ` Thierry Reding
2014-09-30 18:48 ` Sean Paul
[not found] ` <CAOw6vbJy6oy7cibH4f332UM=kS56KUMcnYdUTG0pEYXyQkFDoQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-01 15:54 ` Sean Paul
[not found] ` <CAOw6vbLFLrqWYB-4N50G7oucgMD+xd+QtdcMSzX4z7xRiU-vPQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-02 8:39 ` Thierry Reding
2014-11-05 9:50 ` Thierry Reding
2014-11-05 10:26 ` Thierry Reding
2014-06-26 20:49 ` [RFC 10/10] mmc: sdhci-tegra: " Thierry Reding
[not found] ` <1403815790-8548-11-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-27 9:46 ` Hiroshi DOyu
[not found] ` <20140627124602.53d046dae5d7e269815e56a0-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-06-27 11:01 ` Thierry Reding
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