2020-05-09 08:42:18

by chao hao

Subject: [PATCH v3 4/7] iommu/mediatek: Move inv_sel_reg into the plat_data

For mt6779, MMU_INVLDT_SEL register's offset is changed from
0x38 to 0x2c, so we can put inv_sel_reg in the plat_data to
use it.
In addition, we renamed it to REG_MMU_INV_SEL_GEN1 and use it
before mt6779.

Signed-off-by: Chao Hao <[email protected]>
---
drivers/iommu/mtk_iommu.c | 9 ++++++---
drivers/iommu/mtk_iommu.h | 1 +
2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 9ede327a418d..d73de987f8be 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -37,7 +37,7 @@
#define REG_MMU_INVLD_START_A 0x024
#define REG_MMU_INVLD_END_A 0x028

-#define REG_MMU_INV_SEL 0x038
+#define REG_MMU_INV_SEL_GEN1 0x038
#define F_INVLD_EN0 BIT(0)
#define F_INVLD_EN1 BIT(1)

@@ -167,7 +167,7 @@ static void mtk_iommu_tlb_flush_all(void *cookie)

for_each_m4u(data) {
writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0,
- data->base + REG_MMU_INV_SEL);
+ data->base + data->plat_data->inv_sel_reg);
writel_relaxed(F_ALL_INVLD, data->base + REG_MMU_INVALIDATE);
wmb(); /* Make sure the tlb flush all done */
}
@@ -184,7 +184,7 @@ static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size,
for_each_m4u(data) {
spin_lock_irqsave(&data->tlb_lock, flags);
writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0,
- data->base + REG_MMU_INV_SEL);
+ data->base + data->plat_data->inv_sel_reg);

writel_relaxed(iova, data->base + REG_MMU_INVLD_START_A);
writel_relaxed(iova + size - 1,
@@ -784,6 +784,7 @@ static const struct mtk_iommu_plat_data mt2712_data = {
.has_4gb_mode = true,
.has_bclk = true,
.has_vld_pa_rng = true,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN1,
.larbid_remap = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
};

@@ -792,12 +793,14 @@ static const struct mtk_iommu_plat_data mt8173_data = {
.has_4gb_mode = true,
.has_bclk = true,
.reset_axi = true,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN1,
.larbid_remap = {0, 1, 2, 3, 4, 5}, /* Linear mapping. */
};

static const struct mtk_iommu_plat_data mt8183_data = {
.m4u_plat = M4U_MT8183,
.reset_axi = true,
+ .inv_sel_reg = REG_MMU_INV_SEL_GEN1,
.larbid_remap = {0, 4, 5, 6, 7, 2, 3, 1},
};

diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index d711ac630037..afd7a2de5c1e 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -43,6 +43,7 @@ struct mtk_iommu_plat_data {
bool has_misc_ctrl;
bool has_vld_pa_rng;
bool reset_axi;
+ u32 inv_sel_reg;
unsigned char larbid_remap[MTK_LARB_NR_MAX];
};

--
2.18.0

2020-05-25 16:30:33

by Yong Wu (吴勇)

Subject: Re: [PATCH v3 4/7] iommu/mediatek: Move inv_sel_reg into the plat_data

On Sat, 2020-05-09 at 16:36 +0800, Chao Hao wrote:
> For mt6779, MMU_INVLDT_SEL register's offset is changed from

At this patch, the register is still called by "MMU_INV_SEL".

> 0x38 to 0x2c, so we can put inv_sel_reg in the plat_data to
> use it.
> In addition, we renamed it to REG_MMU_INV_SEL_GEN1 and use it
> before mt6779.
>
> Signed-off-by: Chao Hao <[email protected]>
> ---
> drivers/iommu/mtk_iommu.c | 9 ++++++---
> drivers/iommu/mtk_iommu.h | 1 +
> 2 files changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> index 9ede327a418d..d73de987f8be 100644
> --- a/drivers/iommu/mtk_iommu.c
> +++ b/drivers/iommu/mtk_iommu.c
> @@ -37,7 +37,7 @@
> #define REG_MMU_INVLD_START_A 0x024
> #define REG_MMU_INVLD_END_A 0x028
>
> -#define REG_MMU_INV_SEL 0x038
> +#define REG_MMU_INV_SEL_GEN1 0x038
> #define F_INVLD_EN0 BIT(0)
> #define F_INVLD_EN1 BIT(1)
>
> @@ -167,7 +167,7 @@ static void mtk_iommu_tlb_flush_all(void *cookie)
>
> for_each_m4u(data) {
> writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0,
> - data->base + REG_MMU_INV_SEL);
> + data->base + data->plat_data->inv_sel_reg);
> writel_relaxed(F_ALL_INVLD, data->base + REG_MMU_INVALIDATE);
> wmb(); /* Make sure the tlb flush all done */
> }
> @@ -184,7 +184,7 @@ static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size,
> for_each_m4u(data) {
> spin_lock_irqsave(&data->tlb_lock, flags);
> writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0,
> - data->base + REG_MMU_INV_SEL);
> + data->base + data->plat_data->inv_sel_reg);
>
> writel_relaxed(iova, data->base + REG_MMU_INVLD_START_A);
> writel_relaxed(iova + size - 1,
> @@ -784,6 +784,7 @@ static const struct mtk_iommu_plat_data mt2712_data = {
> .has_4gb_mode = true,
> .has_bclk = true,
> .has_vld_pa_rng = true,
> + .inv_sel_reg = REG_MMU_INV_SEL_GEN1,

nitpick: align '=' with the next line.

> .larbid_remap = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
> };
>
> @@ -792,12 +793,14 @@ static const struct mtk_iommu_plat_data mt8173_data = {
> .has_4gb_mode = true,
> .has_bclk = true,
> .reset_axi = true,
> + .inv_sel_reg = REG_MMU_INV_SEL_GEN1,

align '='

> .larbid_remap = {0, 1, 2, 3, 4, 5}, /* Linear mapping. */
> };
>
> static const struct mtk_iommu_plat_data mt8183_data = {
> .m4u_plat = M4U_MT8183,
> .reset_axi = true,
> + .inv_sel_reg = REG_MMU_INV_SEL_GEN1,
> .larbid_remap = {0, 4, 5, 6, 7, 2, 3, 1},
> };
>
> diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
> index d711ac630037..afd7a2de5c1e 100644
> --- a/drivers/iommu/mtk_iommu.h
> +++ b/drivers/iommu/mtk_iommu.h
> @@ -43,6 +43,7 @@ struct mtk_iommu_plat_data {
> bool has_misc_ctrl;
> bool has_vld_pa_rng;
> bool reset_axi;
> + u32 inv_sel_reg;
> unsigned char larbid_remap[MTK_LARB_NR_MAX];
> };
>