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Message-ID: <1565423901-17008-3-git-send-email-yong.wu@mediatek.com>
Date: Sat, 10 Aug 2019 15:58:02 +0800
From: Yong Wu <yong.wu@...iatek.com>
To: Joerg Roedel <joro@...tes.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Robin Murphy <robin.murphy@....com>,
Will Deacon <will@...nel.org>
CC: Rob Herring <robh+dt@...nel.org>,
Evan Green <evgreen@...omium.org>,
Tomasz Figa <tfiga@...gle.com>,
<linux-mediatek@...ts.infradead.org>,
<srv_heupstream@...iatek.com>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<iommu@...ts.linux-foundation.org>, <yong.wu@...iatek.com>,
<youlin.pei@...iatek.com>, Nicolas Boichat <drinkcat@...omium.org>,
<anan.sun@...iatek.com>, Matthias Kaehlcke <mka@...omium.org>,
<cui.zhang@...iatek.com>, <chao.hao@...iatek.com>,
<ming-fan.chen@...iatek.com>
Subject: [PATCH v9 02/21] iommu/mediatek: Use a struct as the platform data
Use a struct as the platform special data instead of the enumeration.
This is a prepare patch for adding mt8183 iommu support.
Signed-off-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
Reviewed-by: Evan Green <evgreen@...omium.org>
---
drivers/iommu/mtk_iommu.c | 24 ++++++++++++++++--------
drivers/iommu/mtk_iommu.h | 6 +++++-
2 files changed, 21 insertions(+), 9 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 82e4be4..c6e6dc3 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -46,7 +46,7 @@
#define REG_MMU_CTRL_REG 0x110
#define F_MMU_PREFETCH_RT_REPLACE_MOD BIT(4)
#define F_MMU_TF_PROTECT_SEL_SHIFT(data) \
- ((data)->m4u_plat == M4U_MT2712 ? 4 : 5)
+ ((data)->plat_data->m4u_plat == M4U_MT2712 ? 4 : 5)
/* It's named by F_MMU_TF_PROT_SEL in mt2712. */
#define F_MMU_TF_PROTECT_SEL(prot, data) \
(((prot) & 0x3) << F_MMU_TF_PROTECT_SEL_SHIFT(data))
@@ -512,7 +512,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
}
regval = F_MMU_TF_PROTECT_SEL(2, data);
- if (data->m4u_plat == M4U_MT8173)
+ if (data->plat_data->m4u_plat == M4U_MT8173)
regval |= F_MMU_PREFETCH_RT_REPLACE_MOD;
writel_relaxed(regval, data->base + REG_MMU_CTRL_REG);
@@ -533,14 +533,14 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
F_INT_PRETETCH_TRANSATION_FIFO_FAULT;
writel_relaxed(regval, data->base + REG_MMU_INT_MAIN_CONTROL);
- if (data->m4u_plat == M4U_MT8173)
+ if (data->plat_data->m4u_plat == M4U_MT8173)
regval = (data->protect_base >> 1) | (data->enable_4GB << 31);
else
regval = lower_32_bits(data->protect_base) |
upper_32_bits(data->protect_base);
writel_relaxed(regval, data->base + REG_MMU_IVRP_PADDR);
- if (data->enable_4GB && data->m4u_plat != M4U_MT8173) {
+ if (data->enable_4GB && data->plat_data->m4u_plat != M4U_MT8173) {
/*
* If 4GB mode is enabled, the validate PA range is from
* 0x1_0000_0000 to 0x1_ffff_ffff. here record bit[32:30].
@@ -551,7 +551,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
writel_relaxed(0, data->base + REG_MMU_DCM_DIS);
/* It's MISC control register whose default value is ok except mt8173.*/
- if (data->m4u_plat == M4U_MT8173)
+ if (data->plat_data->m4u_plat == M4U_MT8173)
writel_relaxed(0, data->base + REG_MMU_STANDARD_AXI_MODE);
if (devm_request_irq(data->dev, data->irq, mtk_iommu_isr, 0,
@@ -584,7 +584,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
if (!data)
return -ENOMEM;
data->dev = dev;
- data->m4u_plat = (enum mtk_iommu_plat)of_device_get_match_data(dev);
+ data->plat_data = of_device_get_match_data(dev);
/* Protect memory. HW will access here while translation fault.*/
protect = devm_kzalloc(dev, MTK_PROTECT_PA_ALIGN * 2, GFP_KERNEL);
@@ -732,9 +732,17 @@ static int __maybe_unused mtk_iommu_resume(struct device *dev)
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mtk_iommu_suspend, mtk_iommu_resume)
};
+static const struct mtk_iommu_plat_data mt2712_data = {
+ .m4u_plat = M4U_MT2712,
+};
+
+static const struct mtk_iommu_plat_data mt8173_data = {
+ .m4u_plat = M4U_MT8173,
+};
+
static const struct of_device_id mtk_iommu_of_ids[] = {
- { .compatible = "mediatek,mt2712-m4u", .data = (void *)M4U_MT2712},
- { .compatible = "mediatek,mt8173-m4u", .data = (void *)M4U_MT8173},
+ { .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
+ { .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
{}
};
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 59337323..9725b08 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -32,6 +32,10 @@ enum mtk_iommu_plat {
M4U_MT8173,
};
+struct mtk_iommu_plat_data {
+ enum mtk_iommu_plat m4u_plat;
+};
+
struct mtk_iommu_domain;
struct mtk_iommu_data {
@@ -48,7 +52,7 @@ struct mtk_iommu_data {
bool tlb_flush_active;
struct iommu_device iommu;
- enum mtk_iommu_plat m4u_plat;
+ const struct mtk_iommu_plat_data *plat_data;
struct list_head list;
};
--
1.9.1
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