From: "jroedel-l3A5Bk7waGM@public.gmane.org" <jroedel-l3A5Bk7waGM@public.gmane.org>
To: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Cc: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
Thierry Reding
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org"
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
"Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org"
<Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
"dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org"
<dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
Subject: Re: [RFC PATCH 4/7] iommu: provide helper function to configure an IOMMU for an of master
Date: Tue, 2 Sep 2014 22:59:41 +0200 [thread overview]
Message-ID: <20140902205941.GA26123@suse.de> (raw)
In-Reply-To: <5897964.3ztXLVfPDF@wuerfel>
On Tue, Sep 02, 2014 at 04:01:32PM +0200, Arnd Bergmann wrote:
> This is an artifact of the API being single-instance at the moment.
> We might not in fact need it, I was just trying to think of things
> that naturally fit in there and that are probably already linked
> together in the individual iommu drivers.
I am not sure what you mean by single-instance. Is it that currently the
API only supports one type of iommu_ops per bus? That should be fine as
long as there is only one type of IOMMU on the bus.
Besides that, it is a feature of the IOMMU-API to hide the details about
all the hardware IOMMUs in the system from its users.
Joerg
WARNING: multiple messages have this Message-ID (diff)
From: jroedel@suse.de (jroedel at suse.de)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 4/7] iommu: provide helper function to configure an IOMMU for an of master
Date: Tue, 2 Sep 2014 22:59:41 +0200 [thread overview]
Message-ID: <20140902205941.GA26123@suse.de> (raw)
In-Reply-To: <5897964.3ztXLVfPDF@wuerfel>
On Tue, Sep 02, 2014 at 04:01:32PM +0200, Arnd Bergmann wrote:
> This is an artifact of the API being single-instance at the moment.
> We might not in fact need it, I was just trying to think of things
> that naturally fit in there and that are probably already linked
> together in the individual iommu drivers.
I am not sure what you mean by single-instance. Is it that currently the
API only supports one type of iommu_ops per bus? That should be fine as
long as there is only one type of IOMMU on the bus.
Besides that, it is a feature of the IOMMU-API to hide the details about
all the hardware IOMMUs in the system from its users.
Joerg
next prev parent reply other threads:[~2014-09-02 20:59 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-29 15:54 [RFC PATCH 0/7] Introduce automatic DMA configuration for IOMMU masters Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-1-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-08-29 15:54 ` [RFC PATCH 1/7] iommu: provide early initialisation hook for IOMMU drivers Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-2-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-01 7:52 ` Thierry Reding
2014-09-01 7:52 ` Thierry Reding
2014-09-01 14:31 ` Arnd Bergmann
2014-09-01 14:31 ` Arnd Bergmann
2014-09-01 16:36 ` Will Deacon
2014-09-01 16:36 ` Will Deacon
2014-09-02 6:56 ` Laurent Pinchart
2014-09-02 6:56 ` Laurent Pinchart
2014-09-02 14:47 ` Varun Sethi
2014-09-02 14:47 ` Varun Sethi
2014-09-02 15:04 ` Arnd Bergmann
2014-09-02 15:04 ` Arnd Bergmann
2014-08-29 15:54 ` [RFC PATCH 2/7] dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-3-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-01 14:27 ` Arnd Bergmann
2014-09-01 14:27 ` Arnd Bergmann
2014-09-01 16:20 ` Will Deacon
2014-09-01 16:20 ` Will Deacon
2014-08-29 15:54 ` [RFC PATCH 3/7] iommu: add new iommu_ops callback for adding a device with a set of IDs Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-4-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-01 8:13 ` Thierry Reding
2014-09-01 8:13 ` Thierry Reding
2014-09-01 14:39 ` Arnd Bergmann
2014-09-01 14:39 ` Arnd Bergmann
2014-09-01 16:34 ` Will Deacon
2014-09-01 16:34 ` Will Deacon
[not found] ` <20140901163400.GK24594-5wv7dgnIgG8@public.gmane.org>
2014-09-01 17:18 ` Arnd Bergmann
2014-09-01 17:18 ` Arnd Bergmann
2014-08-29 15:54 ` [RFC PATCH 4/7] iommu: provide helper function to configure an IOMMU for an of master Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-5-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-01 8:29 ` Thierry Reding
2014-09-01 8:29 ` Thierry Reding
2014-09-01 14:46 ` Arnd Bergmann
2014-09-01 14:46 ` Arnd Bergmann
2014-09-01 16:40 ` Will Deacon
2014-09-01 16:40 ` Will Deacon
[not found] ` <20140901164000.GM24594-5wv7dgnIgG8@public.gmane.org>
2014-09-01 20:18 ` Arnd Bergmann
2014-09-01 20:18 ` Arnd Bergmann
2014-09-02 10:03 ` Will Deacon
2014-09-02 10:03 ` Will Deacon
[not found] ` <20140902100342.GG25379-5wv7dgnIgG8@public.gmane.org>
2014-09-02 12:15 ` Arnd Bergmann
2014-09-02 12:15 ` Arnd Bergmann
2014-09-02 13:05 ` Will Deacon
2014-09-02 13:05 ` Will Deacon
[not found] ` <20140902130508.GK25379-5wv7dgnIgG8@public.gmane.org>
2014-09-02 14:01 ` Arnd Bergmann
2014-09-02 14:01 ` Arnd Bergmann
2014-09-02 20:59 ` jroedel-l3A5Bk7waGM [this message]
2014-09-02 20:59 ` jroedel at suse.de
[not found] ` <20140902205941.GA26123-l3A5Bk7waGM@public.gmane.org>
2014-09-03 9:45 ` Will Deacon
2014-09-03 9:45 ` Will Deacon
2014-09-02 15:03 ` Varun Sethi
2014-09-02 15:03 ` Varun Sethi
[not found] ` <b8484a1ea45846bbaa8512d4597b9e65-AZ66ij2kwaacCcN9WK45f+O6mTEJWrR4XA4E9RH9d+qIuWR1G4zioA@public.gmane.org>
2014-09-02 15:08 ` Arnd Bergmann
2014-09-02 15:08 ` Arnd Bergmann
2014-09-02 10:23 ` Laurent Pinchart
2014-09-02 10:23 ` Laurent Pinchart
2014-09-02 10:51 ` Laurent Pinchart
2014-09-02 10:51 ` Laurent Pinchart
2014-09-02 11:03 ` Will Deacon
2014-09-02 11:03 ` Will Deacon
[not found] ` <20140902110340.GI25379-5wv7dgnIgG8@public.gmane.org>
2014-09-02 19:08 ` Laurent Pinchart
2014-09-02 19:08 ` Laurent Pinchart
2014-09-02 14:55 ` Varun Sethi
2014-09-02 14:55 ` Varun Sethi
2014-08-29 15:54 ` [RFC PATCH 5/7] dma-mapping: detect and configure IOMMU in of_dma_configure Will Deacon
2014-08-29 15:54 ` Will Deacon
[not found] ` <1409327670-3495-6-git-send-email-will.deacon-5wv7dgnIgG8@public.gmane.org>
2014-09-01 14:53 ` Arnd Bergmann
2014-09-01 14:53 ` Arnd Bergmann
2014-08-29 15:54 ` [RFC PATCH 6/7] arm: call iommu_init before of_platform_populate Will Deacon
2014-08-29 15:54 ` Will Deacon
2014-08-29 15:54 ` [RFC PATCH 7/7] arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops Will Deacon
2014-08-29 15:54 ` Will Deacon
2014-09-02 6:26 ` [RFC PATCH 0/7] Introduce automatic DMA configuration for IOMMU masters Marek Szyprowski
2014-09-02 6:26 ` Marek Szyprowski
[not found] ` <540562F9.2030508-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-09-02 8:31 ` Will Deacon
2014-09-02 8:31 ` Will Deacon
[not found] ` <20140902083138.GA25379-5wv7dgnIgG8@public.gmane.org>
2014-09-02 8:48 ` Marek Szyprowski
2014-09-02 8:48 ` Marek Szyprowski
[not found] ` <54058442.2070204-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-09-02 8:56 ` Arnd Bergmann
2014-09-02 8:56 ` Arnd Bergmann
2014-09-02 10:42 ` Marek Szyprowski
2014-09-02 10:42 ` Marek Szyprowski
[not found] ` <54059F05.2090901-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-09-02 10:57 ` Will Deacon
2014-09-02 10:57 ` Will Deacon
[not found] ` <20140902105730.GH25379-5wv7dgnIgG8@public.gmane.org>
2014-09-02 12:24 ` Marek Szyprowski
2014-09-02 12:24 ` Marek Szyprowski
[not found] ` <5405B6F2.1060105-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2014-09-02 12:43 ` Arnd Bergmann
2014-09-02 12:43 ` Arnd Bergmann
2014-09-02 21:50 ` Laurent Pinchart
2014-09-02 21:50 ` Laurent Pinchart
2014-09-02 12:22 ` Arnd Bergmann
2014-09-02 12:22 ` Arnd Bergmann
2014-09-02 12:30 ` Marek Szyprowski
2014-09-02 12:30 ` Marek Szyprowski
2014-09-02 12:46 ` Arnd Bergmann
2014-09-02 12:46 ` Arnd Bergmann
2014-09-02 13:11 ` Marek Szyprowski
2014-09-02 13:11 ` Marek Szyprowski
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