diff mbox series

[v3,16/33] iommu/mediatek: Add IOMMU_TYPE flag

Message ID 20210923115840.17813-17-yong.wu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series MT8195 IOMMU SUPPORT | expand

Commit Message

Yong Wu (吴勇) Sept. 23, 2021, 11:58 a.m. UTC 
Add IOMMU_TYPE definition. In the mt8195, we have another IOMMU_TYPE:
infra iommu, also there will be another APU_IOMMU, thus, use 2bits for the
IOMMU_TYPE.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
 drivers/iommu/mtk_iommu.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

Comments

AngeloGioacchino Del Regno Jan. 4, 2022, 3:54 p.m. UTC | #1 
Il 23/09/21 13:58, Yong Wu ha scritto:
> Add IOMMU_TYPE definition. In the mt8195, we have another IOMMU_TYPE:
> infra iommu, also there will be another APU_IOMMU, thus, use 2bits for the
> IOMMU_TYPE.
> 
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>



Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff mbox series

Patch

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index d557c3437d67..2665b0707f13 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -126,9 +126,17 @@ 
 #define SHARE_PGTABLE			BIT(10) /* 2 HW share pgtable */
 #define DCM_DISABLE			BIT(11)
 #define NOT_STD_AXI_MODE		BIT(12)
+/* 2 bits: iommu type */
+#define MTK_IOMMU_TYPE_MM		(0x0 << 13)
+#define MTK_IOMMU_TYPE_INFRA		(0x1 << 13)
+#define MTK_IOMMU_TYPE_MASK		(0x3 << 13)
 
-#define MTK_IOMMU_HAS_FLAG(pdata, _x) \
-		((((pdata)->flags) & (_x)) == (_x))
+#define MTK_IOMMU_HAS_FLAG(pdata, _x)	(!!(((pdata)->flags) & (_x)))
+
+#define MTK_IOMMU_HAS_FLAG_MASK(pdata, _x, mask)	\
+				((((pdata)->flags) & (mask)) == (_x))
+#define MTK_IOMMU_IS_TYPE(pdata, _x)	MTK_IOMMU_HAS_FLAG_MASK(pdata, _x,\
+							MTK_IOMMU_TYPE_MASK)
 
 struct mtk_iommu_domain {
 	struct io_pgtable_cfg		cfg;