Il 25/01/22 09:56, Yong Wu ha scritto:
We preassign some ports in a special bank via the new defined
banks_portmsk. Put it in the plat_data means it is not expected to be
adjusted dynamically.
If the iommu id in the iommu consumer's dtsi node is inside this
banks_portmsk, then we switch it to this special iommu bank, and
initialise the IOMMU bank HW.
Each a bank has the independent pgtable(4GB iova range). Each a bank
is a independent iommu domain/group. Currently we don't separate different
iova ranges inside a bank.
Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
---
drivers/iommu/mtk_iommu.c | 39 ++++++++++++++++++++++++++++++++++++---
1 file changed, 36 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 22586d1aed72..c6de9304bbc6 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -191,6 +191,7 @@ struct mtk_iommu_plat_data {
u8 banks_num;
bool banks_enable[MTK_IOMMU_BANK_MAX];
+ unsigned int banks_portmsk[MTK_IOMMU_BANK_MAX];
I would prefer to see u32 here instead... but maybe that's just a
personal preference, it doesn't really matter.
In any case:
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
