From: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
To: "Chalamarla,
Tirumalesh"
<Tirumalesh.Chalamarla-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
Cc: Mark Rutland <Mark.Rutland-5wv7dgnIgG8@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"arnd-r2nGTMty4D4@public.gmane.org"
<arnd-r2nGTMty4D4@public.gmane.org>,
Marc Zyngier <Marc.Zyngier-5wv7dgnIgG8@public.gmane.org>,
"joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org"
<joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>,
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<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org"
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
"olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org"
<olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>,
"Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org"
<Varun.Sethi-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
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<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org"
<hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: Re: Master-aware devices and sideband ID data
Date: Fri, 5 Jun 2015 10:05:34 +0100 [thread overview]
Message-ID: <20150605090534.GC1198@arm.com> (raw)
In-Reply-To: <158EFC9F-FCAF-44D3-AD40-804EDFE0CE25-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
On Thu, Jun 04, 2015 at 11:19:30PM +0100, Chalamarla, Tirumalesh wrote:
> > On Jun 1, 2015, at 3:22 AM, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org> wrote:
> > It's possible to specify that the paths exist. I expect that software
> > would select which to use at runtime.
> >
> My worry is how to define any priorities/preferences between masters.
> in general the proposal looks reasonable.
I agree that the proposal looks reasonable (in terms of the ability to
describe the sort of topologies that we will face) but I still don't
understand what I need to do in e.g. my IOMMU driver to support this
binding whilst continuing to support the existing iommus binding, which
is relied upon to configure dma-mapping.
Mark: how do you see this co-existing/merging with the current bindings?
I don't think it's practical to throw away what we have and move over to
something totally different all in one go, but there clearly *is* benefit
in your proposal over the existing scheme.
Will
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next prev parent reply other threads:[~2015-06-05 9:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 15:50 Master-aware devices and sideband ID data Mark Rutland
2015-05-07 17:49 ` Stuart Yoder
[not found] ` <CALRxmdAE_=SubN7dY-W1K44cjVVRhKLKknpgG9af_g64+GHPtw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-08 15:49 ` Will Deacon
[not found] ` <20150508154903.GH25587-5wv7dgnIgG8@public.gmane.org>
2015-05-08 19:30 ` Stuart Yoder
[not found] ` <CALRxmdAEvQPGN_xvwU5Xb4eNfKegPfTyM-GKXg4jRD7JyRxHJA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-11 9:52 ` Will Deacon
2015-05-26 22:20 ` Chalamarla, Tirumalesh
[not found] ` <26BE36EF-2C5B-4DA6-8950-8FEBB031ED1B-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2015-05-27 17:39 ` Mark Rutland
2015-05-29 17:46 ` Chalamarla, Tirumalesh
[not found] ` <E342D737-5DD5-48C7-BB01-B83C29CB6E31-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2015-06-01 10:22 ` Mark Rutland
2015-06-04 22:19 ` Chalamarla, Tirumalesh
[not found] ` <158EFC9F-FCAF-44D3-AD40-804EDFE0CE25-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
2015-06-05 9:05 ` Will Deacon [this message]
[not found] ` <20150605090534.GC1198-5wv7dgnIgG8@public.gmane.org>
2015-06-09 10:17 ` Mark Rutland
2015-06-10 8:11 ` Will Deacon
[not found] ` <20150610081120.GA22973-5wv7dgnIgG8@public.gmane.org>
2015-07-02 20:26 ` Chalamarla, Tirumalesh
2015-07-08 13:30 ` Mark Rutland
2015-07-08 16:02 ` Will Deacon
[not found] ` <20150708160227.GJ9283-5wv7dgnIgG8@public.gmane.org>
2015-07-16 13:34 ` Mark Rutland
2015-07-17 10:36 ` Will Deacon
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