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Subject[PATCH v2 19/19] iommu/mediatek: Add multiple mtk_iommu_domain support for mt6779
Date
For mt6779, it need to support three mtk_iommu_domains, every
mtk_iommu_domain's iova space is different.
Three mtk_iommu_domains is as below:
1. Normal mtk_iommu_domain exclude 0x4000_0000~0x47ff_ffff and
0x7da0_0000~7fbf_ffff.
2. CCU mtk_iommu_domain include 0x4000_0000~0x47ff_ffff.
3. VPU mtk_iommu_domain 0x7da0_0000~0x7fbf_ffff.

Signed-off-by: Chao Hao <chao.hao@mediatek.com>
---
drivers/iommu/mtk_iommu.c | 45 +++++++++++++++++++++++++++++++++++++--
1 file changed, 43 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index ab09f435d437..d56254883541 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -134,6 +134,30 @@ const struct mtk_domain_data single_dom = {
.max_iova = DMA_BIT_MASK(32)
};

+/*
+ * related file: mt6779-larb-port.h
+ */
+const struct mtk_domain_data mt6779_multi_dom[] = {
+ /* normal domain */
+ {
+ .min_iova = 0x0,
+ .max_iova = DMA_BIT_MASK(32),
+ },
+ /* ccu domain */
+ {
+ .min_iova = 0x40000000,
+ .max_iova = 0x48000000 - 1,
+ .port_mask = {MTK_M4U_ID(9, 21), MTK_M4U_ID(9, 22),
+ MTK_M4U_ID(12, 0), MTK_M4U_ID(12, 1)}
+ },
+ /* vpu domain */
+ {
+ .min_iova = 0x7da00000,
+ .max_iova = 0x7fc00000 - 1,
+ .port_mask = {MTK_M4U_ID(13, 0)}
+ }
+};
+
static struct mtk_iommu_pgtable *share_pgtable;
static const struct iommu_ops mtk_iommu_ops;

@@ -1050,6 +1074,21 @@ static const struct dev_pm_ops mtk_iommu_pm_ops = {
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mtk_iommu_suspend, mtk_iommu_resume)
};

+static const struct mtk_iommu_resv_iova_region mt6779_iommu_rsv_list[] = {
+ {
+ .dom_id = 0,
+ .iova_base = 0x40000000, /* CCU */
+ .iova_size = 0x8000000,
+ .type = IOMMU_RESV_RESERVED,
+ },
+ {
+ .dom_id = 0,
+ .iova_base = 0x7da00000, /* VPU/MDLA */
+ .iova_size = 0x2700000,
+ .type = IOMMU_RESV_RESERVED,
+ },
+};
+
static const struct mtk_iommu_plat_data mt2712_data = {
.m4u_plat = M4U_MT2712,
.has_4gb_mode = true,
@@ -1063,8 +1102,10 @@ static const struct mtk_iommu_plat_data mt2712_data = {

static const struct mtk_iommu_plat_data mt6779_data = {
.m4u_plat = M4U_MT6779,
- .dom_cnt = 1,
- .dom_data = &single_dom,
+ .resv_cnt = ARRAY_SIZE(mt6779_iommu_rsv_list),
+ .resv_region = mt6779_iommu_rsv_list,
+ .dom_cnt = ARRAY_SIZE(mt6779_multi_dom),
+ .dom_data = mt6779_multi_dom,
.larbid_remap[0] = {0, 1, 2, 3, 5, 7, 10, 9},
/* vp6a, vp6b, mdla/core2, mdla/edmc*/
.larbid_remap[1] = {2, 0, 3, 1},
--
2.18.0
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