[PATCH 04/10] iommu/mediatek: mt8195: Add larb_region_msk

Yong Wu
2023-01-13T06:04:39Z

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