Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Yong Wu <yong.wu@mediatek.com>
To:     Joerg Roedel <joro@8bytes.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Rob Herring <robh+dt@kernel.org>
CC:     Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Hans Verkuil <hverkuil@xs4all.nl>, <nfraprado@collabora.com>,
        <linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <iommu@lists.linux.dev>,
        "AngeloGioacchino Del Regno" 
        <angelogioacchino.delregno@collabora.com>,
        <mingyuan.ma@mediatek.com>, <yf.wang@mediatek.com>,
        <libo.kang@mediatek.com>, Yunfei Dong <yunfei.dong@mediatek.com>,
        kyrie wu <kyrie.wu@mediatek.corp-partner.google.com>,
        <chengci.xu@mediatek.com>, <youlin.pei@mediatek.com>,
        <anan.sun@mediatek.com>, Yong Wu <yong.wu@mediatek.com>
Subject: [PATCH 04/10] iommu/mediatek: mt8195: Add larb_region_msk
Date:   Fri, 13 Jan 2023 14:01:27 +0800
Message-ID: <20230113060133.9394-5-yong.wu@mediatek.com>
In-Reply-To: <20230113060133.9394-1-yong.wu@mediatek.com>
References: <20230113060133.9394-1-yong.wu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Add larb_region_msk for mt8195. we separate the 16GB iova regions
by each device's larbid/portid.
Refer to include/dt-bindings/memory/mt8195-memory-port.h

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index d30020d0a190..d8be7584702f 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1546,6 +1546,21 @@ static const struct mtk_iommu_plat_data mt8195_data_infra = {
 	.iova_region_nr   = ARRAY_SIZE(single_domain),
 };
 
+static const unsigned int mt8195_larb_region_msk[][32] = {
+	[0] = {~0, ~0, ~0, ~0},               /* Region0: all ports for larb0/1/2/3 */
+	[1] = {0, 0, 0, 0, 0, 0, 0, 0,
+	       0, 0, 0, 0, 0, 0, 0, 0,
+	       0, 0, 0, ~0, ~0, ~0, ~0, ~0,   /* Region1: larb19/20/21/22/23/24 */
+	       ~0},
+	[2] = {0, 0, 0, 0, ~0, ~0, ~0, ~0,    /* Region2: the other larbs. */
+	       ~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0,
+	       ~0, ~0, 0, 0, 0, 0, 0, 0,
+	       0, ~0, ~0, ~0, ~0},
+	[3] = {0},
+	[4] = {[18] = BIT(0) | BIT(1)},       /* Only larb18 port0/1 */
+	[5] = {[18] = BIT(2) | BIT(3)},       /* Only larb18 port2/3 */
+};
+
 static const struct mtk_iommu_plat_data mt8195_data_vdo = {
 	.m4u_plat	= M4U_MT8195,
 	.flags          = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
@@ -1556,6 +1571,7 @@ static const struct mtk_iommu_plat_data mt8195_data_vdo = {
 	.banks_enable   = {true},
 	.iova_region	= mt8192_multi_dom,
 	.iova_region_nr	= ARRAY_SIZE(mt8192_multi_dom),
+	.larb_region_msk = mt8195_larb_region_msk,
 	.larbid_remap   = {{2, 0}, {21}, {24}, {7}, {19}, {9, 10, 11},
 			   {13, 17, 15/* 17b */, 25}, {5}},
 };
@@ -1570,6 +1586,7 @@ static const struct mtk_iommu_plat_data mt8195_data_vpp = {
 	.banks_enable   = {true},
 	.iova_region	= mt8192_multi_dom,
 	.iova_region_nr	= ARRAY_SIZE(mt8192_multi_dom),
+	.larb_region_msk = mt8195_larb_region_msk,
 	.larbid_remap   = {{1}, {3},
 			   {22, MTK_INVALID_LARBID, MTK_INVALID_LARBID, MTK_INVALID_LARBID, 23},
 			   {8}, {20}, {12},
-- 
2.18.0