linux-kernel - Re: [PATCH v4 29/35] iommu/mediatek: Add mtk_iommu_bank

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Message-ID: <fd39758a-b5a7-c6d9-3d29-0c6221d0c533@collabora.com>
Date:   Thu, 27 Jan 2022 12:17:12 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Will Deacon <will@...nel.org>
Cc:     Robin Murphy <robin.murphy@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Tomasz Figa <tfiga@...omium.org>,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org,
        Hsin-Yi Wang <hsinyi@...omium.org>, youlin.pei@...iatek.com,
        anan.sun@...iatek.com, xueqi.zhang@...iatek.com,
        yen-chang.chen@...iatek.com, mingyuan.ma@...iatek.com,
        yf.wang@...iatek.com, libo.kang@...iatek.com,
        chengci.xu@...iatek.com
Subject: Re: [PATCH v4 29/35] iommu/mediatek: Add mtk_iommu_bank_data
 structure

Il 25/01/22 09:56, Yong Wu ha scritto:
> Prepare for supporting multi-banks for the IOMMU HW, No functional change.
> 
> Add a new structure(mtk_iommu_bank_data) for each a bank. Each a bank have
> the independent HW base/IRQ/tlb-range ops, and each a bank has its special
> iommu-domain(independent pgtable), thus, also move the domain information
> into it.
> 
> In previous SoC, we have only one bank which could be treated as bank0(
> bankid always is 0 for the previous SoC).
> 
> After adding this structure, the tlb operations and irq could use
> bank_data as parameter.
> 
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>