[PATCH 06/10] iommu/mediatek: mt8192: add larb_region_msk

Yong Wu
2023-01-13T06:04:36Z

Add larb_region_msk for mt8192. we separate the 16GB iova regions
by each device's larbid/portid.
Note: larb3/6/8/10/12/15 connect nothing in this SoC.
Refer to the comment in include/dt-bindings/memory/mt8192-larb-port.h

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index ffd0203f515e..e4b8c07d4dbd 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -1531,6 +1531,17 @@ static const struct mtk_iommu_plat_data mt8186_data_mm = {
.larb_region_msk = mt8186_larb_region_msk,
};

+static const unsigned int mt8192_larb_region_msk[][32] = {
+ [0] = {~0, ~0}, /* Region0: larb0/1 */
+ [1] = {0, 0, 0, 0, ~0, ~0, 0, ~0}, /* Region1: larb4/5/7 */
+ [2] = {0, 0, ~0, 0, 0, 0, 0, 0, /* Region2: larb2/9/11/13/14/16/17/18/19/20 */
+ 0, ~0, 0, ~0, 0, ~(u32)(BIT(9) | BIT(10)), ~(u32)(BIT(4) | BIT(5)), 0,
+ ~0, ~0, ~0, ~0, ~0},
+ [3] = {0},
+ [4] = {[13] = BIT(9) | BIT(10)}, /* larb13 port9/10 */
+ [5] = {[14] = BIT(4) | BIT(5)}, /* larb14 port4/5 */
+};
+
static const struct mtk_iommu_plat_data mt8192_data = {
.m4u_plat = M4U_MT8192,
.flags = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
@@ -1540,6 +1551,7 @@ static const struct mtk_iommu_plat_data mt8192_data = {
.banks_enable = {true},
.iova_region = mt8192_multi_dom,
.iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),
+ .larb_region_msk = mt8192_larb_region_msk,
.larbid_remap = {{0}, {1}, {4, 5}, {7}, {2}, {9, 11, 19, 20},
{0, 14, 16}, {0, 13, 18, 17}},
};
--
2.18.0