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From:   Yong Wu <yong.wu@mediatek.com>
To:     Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>
CC:     Matthias Brugger <matthias.bgg@gmail.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        Tomasz Figa <tfiga@google.com>,
        <linux-mediatek@lists.infradead.org>,
        <srv_heupstream@mediatek.com>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <iommu@lists.linux-foundation.org>, <yong.wu@mediatek.com>,
        <youlin.pei@mediatek.com>, Nicolas Boichat <drinkcat@chromium.org>,
        <anan.sun@mediatek.com>, <chao.hao@mediatek.com>,
        <jun.wen@mediatek.com>
Subject: [PATCH v2 5/6] iommu/mediatek: Enable granule_ignore for unmap
Date:   Thu, 19 Nov 2020 14:18:35 +0800
Message-ID: <20201119061836.15238-6-yong.wu@mediatek.com>
In-Reply-To: <20201119061836.15238-1-yong.wu@mediatek.com>
References: <20201119061836.15238-1-yong.wu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

MediaTek IOMMU HW don't care about granule when it flush tlb.
In order to flush tlb once when unmap, Enable this flag to gather all
the iova chunk of unmap.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 8c2d4a225666..94786860bd84 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -432,6 +432,7 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain,
 {
 	struct mtk_iommu_domain *dom = to_mtk_domain(domain);
 
+	gather->granule_ignore = true;
 	return dom->iop->unmap(dom->iop, iova, size, gather);
 }
 
-- 
2.18.0