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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * Copyright (c) 2015-2016 MediaTek Inc.
- * Author: Honghui Zhang <honghui.zhang@mediatek.com>
- */
- #ifndef _MTK_IOMMU_H_
- #define _MTK_IOMMU_H_
- #include <linux/clk.h>
- #include <linux/component.h>
- #include <linux/device.h>
- #include <linux/io.h>
- #include <linux/io-pgtable.h>
- #include <linux/iommu.h>
- #include <linux/list.h>
- #include <linux/spinlock.h>
- #include <linux/dma-mapping.h>
- #include <soc/mediatek/smi.h>
- #include <dt-bindings/memory/mtk-memory-port.h>
- #define MTK_LARB_COM_MAX 8
- #define MTK_LARB_SUBCOM_MAX 4
- #define MTK_IOMMU_GROUP_MAX 8
- struct mtk_iommu_suspend_reg {
- union {
- u32 standard_axi_mode;/* v1 */
- u32 misc_ctrl;/* v2 */
- };
- u32 dcm_dis;
- u32 ctrl_reg;
- u32 int_control0;
- u32 int_main_control;
- u32 ivrp_paddr;
- u32 vld_pa_rng;
- u32 wr_len_ctrl;
- };
- enum mtk_iommu_plat {
- M4U_MT2701,
- M4U_MT2712,
- M4U_MT6779,
- M4U_MT8167,
- M4U_MT8173,
- M4U_MT8183,
- M4U_MT8192,
- };
- struct mtk_iommu_iova_region;
- struct mtk_iommu_plat_data {
- enum mtk_iommu_plat m4u_plat;
- u32 flags;
- u32 inv_sel_reg;
- unsigned int iova_region_nr;
- const struct mtk_iommu_iova_region *iova_region;
- unsigned char larbid_remap[MTK_LARB_COM_MAX][MTK_LARB_SUBCOM_MAX];
- };
- struct mtk_iommu_domain;
- struct mtk_iommu_data {
- void __iomem *base;
- int irq;
- struct device *dev;
- struct clk *bclk;
- phys_addr_t protect_base; /* protect memory base */
- struct mtk_iommu_suspend_reg reg;
- struct mtk_iommu_domain *m4u_dom;
- struct iommu_group *m4u_group[MTK_IOMMU_GROUP_MAX];
- bool enable_4GB;
- spinlock_t tlb_lock; /* lock for tlb range flush */
- struct iommu_device iommu;
- const struct mtk_iommu_plat_data *plat_data;
- struct device *smicomm_dev;
- struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */
- struct list_head list;
- struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX];
- };
- static inline int compare_of(struct device *dev, void *data)
- {
- return dev->of_node == data;
- }
- static inline void release_of(struct device *dev, void *data)
- {
- of_node_put(data);
- }
- static inline int mtk_iommu_bind(struct device *dev)
- {
- struct mtk_iommu_data *data = dev_get_drvdata(dev);
- return component_bind_all(dev, &data->larb_imu);
- }
- static inline void mtk_iommu_unbind(struct device *dev)
- {
- struct mtk_iommu_data *data = dev_get_drvdata(dev);
- component_unbind_all(dev, &data->larb_imu);
- }
- #endif
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