iommu/mediatek: mt8188: Add iova_region_larb_msk

Add iova_region_larb_msk for mt8188. We separate the 16GB iova regions
by each device's larbid/portid.
Refer to include/dt-bindings/memory/mediatek,mt8188-memory-port.h

As commented in the code, larb19(21) means it's larb19 while its SW index
is 21.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20230602090227.7264-7-yong.wu@mediatek.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 33cfb226d949ed7fb9c5aa29f1c8f6fa00dc2060..640275873a271ec7806083df05003f7fe5237754 100644 (file)
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1607,6 +1607,20 @@ static const struct mtk_iommu_plat_data mt8188_data_infra = {
        .iova_region_nr   = ARRAY_SIZE(single_domain),
 };
 
+static const u32 mt8188_larb_region_msk[MT8192_MULTI_REGION_NR_MAX][MTK_LARB_NR_MAX] = {
+       [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(21)/21(22)/23 */
+       [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},
+       [3] = {0},
+       [4] = {[24] = BIT(0) | BIT(1)},       /* Only larb27(24) port0/1 */
+       [5] = {[24] = BIT(2) | BIT(3)},       /* Only larb27(24) port2/3 */
+};
+
 static const struct mtk_iommu_plat_data mt8188_data_vdo = {
        .m4u_plat       = M4U_MT8188,
        .flags          = HAS_BCLK | HAS_SUB_COMM_3BITS | OUT_ORDER_WR_EN |
@@ -1618,6 +1632,7 @@ static const struct mtk_iommu_plat_data mt8188_data_vdo = {
        .banks_enable   = {true},
        .iova_region    = mt8192_multi_dom,
        .iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
+       .iova_region_larb_msk = mt8188_larb_region_msk,
        .larbid_remap   = {{2}, {0}, {21}, {0}, {19}, {9, 10,
                           11 /* 11a */, 25 /* 11c */},
                           {13, 0, 29 /* 16b */, 30 /* 17b */, 0}, {5}},
@@ -1634,6 +1649,7 @@ static const struct mtk_iommu_plat_data mt8188_data_vpp = {
        .banks_enable   = {true},
        .iova_region    = mt8192_multi_dom,
        .iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
+       .iova_region_larb_msk = mt8188_larb_region_msk,
        .larbid_remap   = {{1}, {3}, {23}, {7}, {MTK_INVALID_LARBID},
                           {12, 15, 24 /* 11b */}, {14, MTK_INVALID_LARBID,
                           16 /* 16a */, 17 /* 17a */, MTK_INVALID_LARBID,