From: Zhengnan Chen Date: Sat, 18 Oct 2025 13:26:14 +0000 (+0800) Subject: iommu/mediatek: mt8189: Add MM IOMMUs support X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5a70826910c37190a1857e1b66d49753c9225ef0;p=thirdparty%2Fkernel%2Flinux.git iommu/mediatek: mt8189: Add MM IOMMUs support Add support for mt8189 MM IOMMUs. Signed-off-by: Zhengnan Chen Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Yong Wu Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index e71acaa292cc6..989e075991936 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1771,6 +1771,33 @@ static const struct mtk_iommu_plat_data mt8189_data_infra = { .iova_region_nr = ARRAY_SIZE(single_domain), }; +static const u32 mt8189_larb_region_msk[MT8192_MULTI_REGION_NR_MAX][MTK_LARB_NR_MAX] = { + [0] = {~0, ~0, ~0, [22] = BIT(0)}, /* Region0: all ports for larb0/1/2 */ + [1] = {[3] = ~0, [4] = ~0}, /* Region1: all ports for larb4(3)/7(4) */ + [2] = {[5] = ~0, [6] = ~0, /* Region2: all ports for larb9(5)/11(6) */ + [7] = ~0, [8] = ~0, /* Region2: all ports for larb13(7)/14(8) */ + [9] = ~0, [10] = ~0, /* Region2: all ports for larb16(9)/17(10) */ + [11] = ~0, [12] = ~0, /* Region2: all ports for larb19(11)/20(12) */ + [21] = ~0}, /* Region2: larb21 fake GCE larb */ +}; + +static const struct mtk_iommu_plat_data mt8189_data_mm = { + .m4u_plat = M4U_MT8189, + .flags = HAS_BCLK | HAS_SUB_COMM_3BITS | OUT_ORDER_WR_EN | + WR_THROT_EN | IOVA_34_EN | MTK_IOMMU_TYPE_MM | + PGTABLE_PA_35_EN | DL_WITH_MULTI_LARB, + .hw_list = &m4ulist, + .inv_sel_reg = REG_MMU_INV_SEL_GEN2, + .banks_num = 5, + .banks_enable = {true, false, false, false, false}, + .iova_region = mt8192_multi_dom, + .iova_region_nr = ARRAY_SIZE(mt8192_multi_dom), + .iova_region_larb_msk = mt8189_larb_region_msk, + .larbid_remap = {{0}, {1}, {21/* GCE_D */, 21/* GCE_M */, 2}, + {19, 20, 9, 11}, {7}, {4}, + {13, 17}, {14, 16}}, +}; + static const struct mtk_iommu_plat_data mt8192_data = { .m4u_plat = M4U_MT8192, .flags = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN | @@ -1874,6 +1901,7 @@ static const struct of_device_id mtk_iommu_of_ids[] = { { .compatible = "mediatek,mt8188-iommu-vpp", .data = &mt8188_data_vpp}, { .compatible = "mediatek,mt8189-iommu-apu", .data = &mt8189_data_apu}, { .compatible = "mediatek,mt8189-iommu-infra", .data = &mt8189_data_infra}, + { .compatible = "mediatek,mt8189-iommu-mm", .data = &mt8189_data_mm}, { .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data}, { .compatible = "mediatek,mt8195-iommu-infra", .data = &mt8195_data_infra}, { .compatible = "mediatek,mt8195-iommu-vdo", .data = &mt8195_data_vdo},