From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: "Terje Bergström" <tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Alexandre Courbot
<acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Alexandre Courbot
<gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH v4 05/12] memory: Add NVIDIA Tegra memory controller support
Date: Thu, 30 Oct 2014 15:56:56 +0100 [thread overview]
Message-ID: <20141030145654.GD20072@ulmo.nvidia.com> (raw)
In-Reply-To: <5452418F.8080005-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 896 bytes --]
On Thu, Oct 30, 2014 at 03:47:59PM +0200, Terje Bergström wrote:
> On 30.10.2014 15:35, Alexandre Courbot wrote:
> > Great, thanks for confirming!
> >
> > Thierry, how do you want to address this? We could change the register
> > for the GPU group, or (maybe preferable if we want to reflect the actual
> > hardware state) add the GPUB group. I don't know if that would be easy
> > though since we would have the problem of the gpusrd and gpuswr clients
> > ownership (seems like they would belong to both groups?)
>
> gpusrd and gpuswr are client IDs for GPU reads and writes on MC. GPU and
> GPUB are SW group IDs for SMMU. There's no 1:1 or hierarchical mapping.
Since the GPU client ID is effectively useless for purposes of IOMMU
translation I'd lean towards just keeping the existing TEGRA_SWGROUP_GPU
and update the register to point to MC_SMMU_GPUB_ASID_0.
Thierry
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next prev parent reply other threads:[~2014-10-30 14:56 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-13 10:33 [PATCH v3 01/12] clk: tegra: Implement memory-controller clock Thierry Reding
[not found] ` <1413196434-5292-1-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-10-13 10:33 ` [PATCH 02/12] amba: Add Kconfig file Thierry Reding
2014-10-13 10:33 ` [PATCH v4 03/12] ARM: tegra: Move AHB Kconfig to drivers/amba Thierry Reding
2014-10-13 10:33 ` [PATCH 04/12] of: Add NVIDIA Tegra memory controller binding Thierry Reding
2014-10-13 10:33 ` [PATCH v4 05/12] memory: Add NVIDIA Tegra memory controller support Thierry Reding
[not found] ` <1413196434-5292-5-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-10-15 22:05 ` Olof Johansson
[not found] ` <CAOesGMjMcqa_wE7rfA42QyvF7yxAkgjEN+-0UVMuErnjHr4zkA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-30 15:32 ` Thierry Reding
2014-10-15 22:09 ` Olof Johansson
[not found] ` <CAOesGMgDE_PZHrrEhntnce2AMsdtAb9+i5XuxP-Q7j--432zpw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-30 15:08 ` Thierry Reding
[not found] ` <20141030150839.GG20072-AwZRO8vwLAwmlAP/+Wk3EA@public.gmane.org>
2014-10-31 13:27 ` Thierry Reding
[not found] ` <20141031132740.GA9371-AwZRO8vwLAwmlAP/+Wk3EA@public.gmane.org>
2014-11-01 5:38 ` Alexandre Courbot
[not found] ` <CAAVeFuKgMAF4LML5G=2k00No4AKDj7MTHB6ByXEvPzaSsAPUXg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-03 8:22 ` Thierry Reding
[not found] ` <20141103082201.GC21002-AwZRO8vwLAwmlAP/+Wk3EA@public.gmane.org>
2014-11-03 8:40 ` Alexandre Courbot
2014-10-30 10:03 ` Alexandre Courbot
[not found] ` <54520CFE.9060907-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 10:18 ` Terje Bergström
[not found] ` <5452107D.8080207-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 10:22 ` Alexandre Courbot
[not found] ` <54521181.8080005-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 11:04 ` Terje Bergström
[not found] ` <54521B22.6070708-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 13:35 ` Alexandre Courbot
[not found] ` <54523E8B.7000900-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 13:47 ` Terje Bergström
[not found] ` <5452418F.8080005-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2014-10-30 14:56 ` Thierry Reding [this message]
2014-10-13 10:33 ` [PATCH 06/12] ARM: tegra: Add memory controller support for Tegra20 Thierry Reding
[not found] ` <1413196434-5292-6-git-send-email-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-10-17 17:43 ` David Riley
[not found] ` <CAASgrz3Z2vW0L+u5kju9bAh-R4PnreMnhoGaKY_UwSTGFcBshA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-30 14:45 ` Thierry Reding
2014-10-13 10:33 ` [PATCH 07/12] ARM: tegra: Add memory controller support for Tegra30 Thierry Reding
2014-10-13 10:33 ` [PATCH 08/12] ARM: tegra: Add memory controller support for Tegra114 Thierry Reding
2014-10-13 10:33 ` [PATCH 09/12] ARM: tegra: Add memory controller support for Tegra124 Thierry Reding
2014-10-13 10:33 ` [PATCH 10/12] ARM: tegra: Enable IOMMU for display controllers on Tegra30 Thierry Reding
2014-10-13 10:33 ` [PATCH 11/12] ARM: tegra: Enable IOMMU for display controllers on Tegra114 Thierry Reding
2014-10-13 10:33 ` [PATCH 12/12] ARM: tegra: Enable IOMMU for display controllers on Tegra124 Thierry Reding
2014-10-20 11:02 ` [PATCH v3 01/12] clk: tegra: Implement memory-controller clock Tomeu Vizoso
[not found] ` <CAAObsKB0ozbOy8ZzgbEyf-SrqF5jpfHUXCJdAMiqgS78DAyaVA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-10-30 14:57 ` Thierry Reding
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