[PATCH v3 06/33] iommu/mediatek: Add 12G~16G support for multi domains

From: Yong Wu
Date: Thu Sep 23 2021 - 08:00:01 EST


In mt8192, we preassign 0-4G; 4G-8G; 8G-12G for different multimedia
engines. This depends on the "dma-ranges=" in the iommu consumer's dtsi
node.

Adds 12G-16G region here. and reword the previous comment. we don't limit
which master locate in which region.

CCU still is 8G-12G. Don't change it here.

Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
---
drivers/iommu/mtk_iommu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index ee10c56e8f96..00d9ae3dc88a 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -178,10 +178,12 @@ static const struct mtk_iommu_iova_region single_domain[] = {
};

static const struct mtk_iommu_iova_region mt8192_multi_dom[] = {
- { .iova_base = 0x0, .size = SZ_4G}, /* disp: 0 ~ 4G */
+ { .iova_base = 0x0, .size = SZ_4G}, /* 0 ~ 4G */
#if IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)
- { .iova_base = SZ_4G, .size = SZ_4G}, /* vdec: 4G ~ 8G */
- { .iova_base = SZ_4G * 2, .size = SZ_4G}, /* CAM/MDP: 8G ~ 12G */
+ { .iova_base = SZ_4G, .size = SZ_4G}, /* 4G ~ 8G */
+ { .iova_base = SZ_4G * 2, .size = SZ_4G}, /* 8G ~ 12G */
+ { .iova_base = SZ_4G * 3, .size = SZ_4G}, /* 12G ~ 16G */
+
{ .iova_base = 0x240000000ULL, .size = 0x4000000}, /* CCU0 */
{ .iova_base = 0x244000000ULL, .size = 0x4000000}, /* CCU1 */
#endif
--
2.18.0