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iommu/mediatek: Use a struct as the platform data

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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@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yong Wu 2019-08-24 11:01:47 +08:00 committed by Joerg Roedel
parent 29746d0125
commit cecdce9d7e
2 changed files with 21 additions and 9 deletions
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24
drivers/iommu/mtk_iommu.c
View File

@ -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 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_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},
{}
};

6
drivers/iommu/mtk_iommu.h
View File

@ -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;
};