[PATCH v7 06/14] iommu/mediatek: mt8195: Add iova_region_larb_msk

Yong Wu
2023-04-11T09:33:52Z

Add iova_region_larb_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>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.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 672059f9e0b7..bb3734378934 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1579,6 +1579,21 @@ 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[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: larb19/20/21/22/23/24 */
+ ~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 |
@@ -1589,6 +1604,7 @@ 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),
+ .iova_region_larb_msk = mt8195_larb_region_msk,
.larbid_remap = {{2, 0}, {21}, {24}, {7}, {19}, {9, 10, 11},
{13, 17, 15/* 17b */, 25}, {5}},
};
@@ -1603,6 +1619,7 @@ 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),
+ .iova_region_larb_msk = mt8195_larb_region_msk,
.larbid_remap = {{1}, {3},
{22, MTK_INVALID_LARBID, MTK_INVALID_LARBID, MTK_INVALID_LARBID, 23},
{8}, {20}, {12},
--
2.25.1