linux-kernel - [PATCH v3 33/33] iommu/mediatek: mt8195: Enable multi banks for infra iommu

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Date:   Thu, 23 Sep 2021 19:58:40 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Joerg Roedel <joro@...tes.org>, Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>
CC:     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>, <yong.wu@...iatek.com>,
        <youlin.pei@...iatek.com>, <anan.sun@...iatek.com>,
        <chao.hao@...iatek.com>, <yen-chang.chen@...iatek.com>
Subject: [PATCH v3 33/33] iommu/mediatek: mt8195: Enable multi banks for infra iommu

Enable the multi-bank functions for infra-iommu. We put PCIE in bank0
and USB in the last bank(bank4). and we don't use the other banks
currently, disable them.

Signed-off-by: Yong Wu <yong.wu@...iatek.com>
---
 drivers/iommu/mtk_iommu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 3cb18ed28132..90be8ebbc98a 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1273,8 +1273,11 @@ static const struct mtk_iommu_plat_data mt8195_data_infra = {
 	.flags            = WR_THROT_EN | DCM_DISABLE |
 			    MTK_IOMMU_TYPE_INFRA | IFA_IOMMU_PCIe_SUPPORT,
 	.pericfg_comp_str = "mediatek,mt8195-pericfg_ao",
-	.bank_nr	  = 1,
-	.bank_enable      = {true},
+	.bank_nr	  = 5,
+	.bank_enable      = {true, false, false, false, true},
+	.bank_portmsk     = {[0] = GENMASK(19, 16),     /* PCIe */
+			     [4] = GENMASK(31, 20),     /* USB */
+			    },
 	.inv_sel_reg      = REG_MMU_INV_SEL_GEN2,
 	.iova_region      = single_domain,
 	.iova_region_nr   = ARRAY_SIZE(single_domain),
-- 
2.18.0