linux-kernel - [PATCH 00/10] Adjust the dma-ranges for MTK IOMMU

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Message-ID: <20230113060133.9394-1-yong.wu@mediatek.com>
Date:   Fri, 13 Jan 2023 14:01:23 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Joerg Roedel <joro@...tes.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Hans Verkuil <hverkuil@...all.nl>, <nfraprado@...labora.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <iommu@...ts.linux.dev>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        <mingyuan.ma@...iatek.com>, <yf.wang@...iatek.com>,
        <libo.kang@...iatek.com>, Yunfei Dong <yunfei.dong@...iatek.com>,
        kyrie wu <kyrie.wu@...iatek.corp-partner.google.com>,
        <chengci.xu@...iatek.com>, <youlin.pei@...iatek.com>,
        <anan.sun@...iatek.com>
Subject: [PATCH 00/10] Adjust the dma-ranges for MTK IOMMU

After commit f1ad5338a4d5 ("of: Fix "dma-ranges" handling for bus
controllers"), the dma-ranges is not allowed for dts leaf node.
but we still would like to separate the different masters into
different iova regions. Thus we adjust the internal flow, separate
the 16GB iova range by the master HW larbid/portid and add the
dma-ranges property in the parent "soc" node. This also could avoid
the users forget/abuse the iova regions.

The commit f1ad5338a4d5 doesn't introduce the regression for us in
upstream, currently mt8195 vcodec/jpeg use the parent/child node.
thus I don't add "Fixes:" tag.

In this series, I add functions for mt8192/mt8195/mt8186, mt8188 will
be in its special patchset. and the previous mt8173/mt8183...support
0-4GB only, no need this function.

Base on v6.2-rc3.

Yong Wu (10):
  dt-bindings: media: mediatek,vcodec: Remove dma-ranges property
  dt-bindings: media: mediatek,jpeg: Remove dma-ranges property
  iommu/mediatek: Get regionid from larb/port id
  iommu/mediatek: mt8195: Add larb_region_msk
  iommu/mediatek: mt8186: add larb_region_msk
  iommu/mediatek: mt8192: add larb_region_msk
  iommu/mediatek: Add a gap for the iova regions
  arm64: dts: mt8195: Add dma-ranges for the parent "soc" node
  arm64: dts: mt8195: Remove the unnecessary dma-ranges
  arm64: dts: mt8186: Add dma-ranges for the parent "soc" node

 .../media/mediatek,mt8195-jpegdec.yaml        |  7 --
 .../media/mediatek,mt8195-jpegenc.yaml        |  7 --
 .../media/mediatek,vcodec-decoder.yaml        |  5 -
 .../media/mediatek,vcodec-encoder.yaml        |  5 -
 .../media/mediatek,vcodec-subdev-decoder.yaml |  7 --
 .../bindings/media/mediatek-jpeg-encoder.yaml |  5 -
 arch/arm64/boot/dts/mediatek/mt8186.dtsi      |  1 +
 arch/arm64/boot/dts/mediatek/mt8195.dtsi      |  2 +-
 drivers/iommu/mtk_iommu.c                     | 95 ++++++++++++++-----
 9 files changed, 72 insertions(+), 62 deletions(-)

-- 
2.18.0