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From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	 Robin Murphy <robin.murphy@arm.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: youlin.pei@mediatek.com, devicetree@vger.kernel.org,
	Nicolas Boichat <drinkcat@chromium.org>,
	srv_heupstream@mediatek.com, Will Deacon <will.deacon@arm.com>,
	linux-kernel@vger.kernel.org, Evan Green <evgreen@chromium.org>,
	Tomasz Figa <tfiga@google.com>,
	iommu@lists.linux-foundation.org,
	Matthias Kaehlcke <mka@chromium.org>,
	linux-mediatek@lists.infradead.org, yingjoe.chen@mediatek.com,
	anan.sun@mediatek.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 02/21] iommu/mediatek: Use a struct as the platform data
Date: Mon, 10 Jun 2019 20:17:41 +0800
Message-ID: <1560169080-27134-3-git-send-email-yong.wu@mediatek.com> (raw)
In-Reply-To: <1560169080-27134-1-git-send-email-yong.wu@mediatek.com>

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>
---
 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 b66d11b..1ddb2b7 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -54,7 +54,7 @@
 #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))
@@ -520,7 +520,7 @@ 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);
 
@@ -541,14 +541,14 @@ 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].
@@ -559,7 +559,7 @@ 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,
@@ -592,7 +592,7 @@ 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);
@@ -740,9 +740,17 @@ 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 62c2c3e..483d210 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -40,6 +40,10 @@ 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 {
@@ -56,7 +60,7 @@ 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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  parent reply index

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-10 12:17 [PATCH v7 00/21] MT8183 IOMMU SUPPORT Yong Wu
2019-06-10 12:17 ` [PATCH v7 01/21] dt-bindings: mediatek: Add binding for mt8183 IOMMU and SMI Yong Wu
2019-06-10 12:17 ` Yong Wu [this message]
2019-06-10 12:17 ` [PATCH v7 03/21] memory: mtk-smi: Use a general config_port interface Yong Wu
2019-06-10 12:17 ` [PATCH v7 04/21] memory: mtk-smi: Use a struct for the platform data for smi-common Yong Wu
2019-06-10 12:17 ` [PATCH v7 05/21] iommu/io-pgtable-arm-v7s: Add paddr_to_iopte and iopte_to_paddr helpers Yong Wu
2019-06-10 12:17 ` [PATCH v7 06/21] iommu/io-pgtable-arm-v7s: Extend MediaTek 4GB Mode Yong Wu
2019-06-10 12:17 ` [PATCH v7 07/21] iommu/mediatek: Add bclk can be supported optionally Yong Wu
2019-06-15 19:18   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 08/21] iommu/mediatek: Add larb-id remapped support Yong Wu
2019-06-17  9:25   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 09/21] iommu/mediatek: Refine protect memory definition Yong Wu
2019-06-17  9:59   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 10/21] iommu/mediatek: Move reset_axi into plat_data Yong Wu
2019-06-17 10:19   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 11/21] iommu/mediatek: Move vld_pa_rng " Yong Wu
2019-06-17 10:27   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 12/21] memory: mtk-smi: Add gals support Yong Wu
2019-06-17 15:43   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 13/21] iommu/mediatek: Add mt8183 IOMMU support Yong Wu
2019-06-17 15:51   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 14/21] iommu/mediatek: Add mmu1 support Yong Wu
2019-06-17 15:58   ` Matthias Brugger
2019-06-18  6:19   ` Tomasz Figa via iommu
2019-06-18 12:09     ` Yong Wu
2019-06-18 14:05       ` Tomasz Figa via iommu
2019-06-10 12:17 ` [PATCH v7 15/21] memory: mtk-smi: Invoke pm runtime_callback to enable clocks Yong Wu
2019-06-17 16:13   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 16/21] memory: mtk-smi: Add bus_sel for mt8183 Yong Wu
2019-06-13  8:14   ` Pi-Hsun Shih
2019-06-20  9:35     ` Matthias Brugger
2019-06-20 11:38       ` Matthias Brugger
2019-06-21  3:57         ` Pi-Hsun Shih
2019-06-13  8:20   ` Pi-Hsun Shih
2019-06-17 16:28     ` Matthias Brugger
2019-06-17 16:23   ` Matthias Brugger
2019-06-18 12:10     ` Yong Wu
2019-06-18 21:07       ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 17/21] memory: mtk-smi: Get rid of need_larbid Yong Wu
2019-06-18 13:45   ` Matthias Brugger
2019-06-20 13:59     ` Yong Wu
2019-06-10 12:17 ` [PATCH v7 18/21] iommu/mediatek: Fix VLD_PA_RNG register backup when suspend Yong Wu
2019-06-17 16:30   ` Matthias Brugger
2019-06-10 12:17 ` [PATCH v7 19/21] iommu/mediatek: Rename enable_4GB to dram_is_4gb Yong Wu
2019-06-18 16:06   ` Matthias Brugger
2019-06-20 13:59     ` Yong Wu
2019-06-21 10:10       ` Matthias Brugger
2019-06-22  2:42         ` Yong Wu
2019-06-10 12:17 ` [PATCH v7 20/21] iommu/mediatek: Fix iova_to_phys PA start for 4GB mode Yong Wu
2019-06-18 16:35   ` Matthias Brugger
2019-06-20 14:00     ` Yong Wu
2019-06-10 12:18 ` [PATCH v7 21/21] iommu/mediatek: Switch to SPDX license identifier Yong Wu
2019-06-17 16:33   ` Matthias Brugger

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