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Subject[PATCH 11/24] iommu/mediatek: Add SUB_COMMON_3BITS flag
Date
In prevous SoC, the sub common id occupy 2 bits. the mt8195's sub common
id has 3bits. Add a new flag for this. and rename the prevous flag to
_2BITS. For readable, I put these two flags together, then move the
other flags. no functional change.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 26 ++++++++++++++++----------
drivers/iommu/mtk_iommu.h | 2 +-
2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 35e321ed6d3d..b770cb5893b2 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -107,6 +107,8 @@
#define REG_MMU1_INT_ID 0x154
#define F_MMU_INT_ID_COMM_ID(a) (((a) >> 9) & 0x7)
#define F_MMU_INT_ID_SUB_COMM_ID(a) (((a) >> 7) & 0x3)
+#define F_MMU_INT_ID_COMM_ID_EXT(a) (((a) >> 10) & 0x7)
+#define F_MMU_INT_ID_SUB_COMM_ID_EXT(a) (((a) >> 7) & 0x7)
#define F_MMU_INT_ID_LARB_ID(a) (((a) >> 7) & 0x7)
#define F_MMU_INT_ID_PORT_ID(a) (((a) >> 2) & 0x1f)

@@ -118,13 +120,14 @@
#define HAS_VLD_PA_RNG BIT(2)
#define RESET_AXI BIT(3)
#define OUT_ORDER_WR_EN BIT(4)
-#define HAS_SUB_COMM BIT(5)
-#define WR_THROT_EN BIT(6)
-#define HAS_LEGACY_IVRP_PADDR BIT(7)
-#define IOVA_34_EN BIT(8)
-#define SHARE_PGTABLE BIT(9) /* 2 HW share pgtable */
-#define DCM_DISABLE BIT(10)
-#define NOT_STD_AXI_MODE BIT(11)
+#define HAS_SUB_COMM_2BITS BIT(5)
+#define HAS_SUB_COMM_3BITS BIT(6)
+#define WR_THROT_EN BIT(7)
+#define HAS_LEGACY_IVRP_PADDR BIT(8)
+#define IOVA_34_EN BIT(9)
+#define SHARE_PGTABLE BIT(10) /* 2 HW share pgtable */
+#define DCM_DISABLE BIT(11)
+#define NOT_STD_AXI_MODE BIT(12)

#define MTK_IOMMU_HAS_FLAG(pdata, _x) \
((((pdata)->flags) & (_x)) == (_x))
@@ -294,9 +297,12 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
fault_pa |= (u64)pa34_32 << 32;

fault_port = F_MMU_INT_ID_PORT_ID(regval);
- if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_SUB_COMM)) {
+ if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_SUB_COMM_2BITS)) {
fault_larb = F_MMU_INT_ID_COMM_ID(regval);
sub_comm = F_MMU_INT_ID_SUB_COMM_ID(regval);
+ } else if (MTK_IOMMU_HAS_FLAG(data->plat_data, HAS_SUB_COMM_3BITS)) {
+ fault_larb = F_MMU_INT_ID_COMM_ID_EXT(regval);
+ sub_comm = F_MMU_INT_ID_SUB_COMM_ID_EXT(regval);
} else {
fault_larb = F_MMU_INT_ID_LARB_ID(regval);
}
@@ -1030,7 +1036,7 @@ static const struct mtk_iommu_plat_data mt2712_data = {

static const struct mtk_iommu_plat_data mt6779_data = {
.m4u_plat = M4U_MT6779,
- .flags = HAS_SUB_COMM | OUT_ORDER_WR_EN | WR_THROT_EN |
+ .flags = HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN | WR_THROT_EN |
NOT_STD_AXI_MODE,
.inv_sel_reg = REG_MMU_INV_SEL_GEN2,
.iova_region = single_domain,
@@ -1068,7 +1074,7 @@ static const struct mtk_iommu_plat_data mt8183_data = {

static const struct mtk_iommu_plat_data mt8192_data = {
.m4u_plat = M4U_MT8192,
- .flags = HAS_BCLK | HAS_SUB_COMM | OUT_ORDER_WR_EN |
+ .flags = HAS_BCLK | HAS_SUB_COMM_2BITS | OUT_ORDER_WR_EN |
WR_THROT_EN | IOVA_34_EN | NOT_STD_AXI_MODE,
.inv_sel_reg = REG_MMU_INV_SEL_GEN2,
.iova_region = mt8192_multi_dom,
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index a41334b12b20..ce11e260d1d7 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -20,7 +20,7 @@
#include <dt-bindings/memory/mtk-memory-port.h>

#define MTK_LARB_COM_MAX 8
-#define MTK_LARB_SUBCOM_MAX 4
+#define MTK_LARB_SUBCOM_MAX 8

#define MTK_IOMMU_GROUP_MAX 8

--
2.18.0
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