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Date: Thu, 28 Apr 2022 16:17:58 +0200 From: Matthias Brugger <matthias.bgg@...il.com> To: Yong Wu <yong.wu@...iatek.com>, Joerg Roedel <joro@...tes.org>, Rob Herring <robh+dt@...nel.org>, 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, AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, mingyuan.ma@...iatek.com, yf.wang@...iatek.com, libo.kang@...iatek.com, chengci.xu@...iatek.com Subject: Re: [PATCH v6 15/34] iommu/mediatek: Add IOMMU_TYPE flag On 07/04/2022 09:57, Yong Wu wrote: > Add IOMMU_TYPE definition. In the mt8195, we have another IOMMU_TYPE: > infra iommu, also there will be another APU_IOMMU, thus, use 2bits for the > IOMMU_TYPE. > > Signed-off-by: Yong Wu <yong.wu@...iatek.com> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> > --- > drivers/iommu/mtk_iommu.c | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > index 84d661e0b371..642949aad47e 100644 > --- a/drivers/iommu/mtk_iommu.c > +++ b/drivers/iommu/mtk_iommu.c > @@ -126,9 +126,17 @@ > #define SHARE_PGTABLE BIT(10) /* 2 HW share pgtable */ > #define DCM_DISABLE BIT(11) > #define NOT_STD_AXI_MODE BIT(12) > +/* 2 bits: iommu type */ > +#define MTK_IOMMU_TYPE_MM (0x0 << 13) > +#define MTK_IOMMU_TYPE_INFRA (0x1 << 13) > +#define MTK_IOMMU_TYPE_MASK (0x3 << 13) > > -#define MTK_IOMMU_HAS_FLAG(pdata, _x) \ > - ((((pdata)->flags) & (_x)) == (_x)) > +#define MTK_IOMMU_HAS_FLAG(pdata, _x) (!!(((pdata)->flags) & (_x))) That could be: MTK_IOMMU_HAS_FLAG(pdata, _x) \ MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, _x) > + > +#define MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, mask) \ > + ((((pdata)->flags) & (mask)) == (_x)) > +#define MTK_IOMMU_IS_TYPE(pdata, _x) MTK_IOMMU_HAS_FLAG_MASK(pdata, _x,\ > + MTK_IOMMU_TYPE_MASK) > > struct mtk_iommu_domain { > struct io_pgtable_cfg cfg;
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