[thirdparty/linux.git] /

/* 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 <soc/mediatek/smi.h>

struct mtk_iommu_suspend_reg {
        u32                             standard_axi_mode;
        u32                             dcm_dis;
        u32                             ctrl_reg;
        u32                             int_control0;
        u32                             int_main_control;
        u32                             ivrp_paddr;
        u32                             vld_pa_rng;
};

enum mtk_iommu_plat {
        M4U_MT2701,
        M4U_MT2712,
        M4U_MT8173,
        M4U_MT8183,
};

struct mtk_iommu_plat_data {
        enum mtk_iommu_plat m4u_plat;
        bool                has_4gb_mode;

        /* HW will use the EMI clock if there isn't the "bclk". */
        bool                has_bclk;
        bool                has_vld_pa_rng;
        bool                reset_axi;
        unsigned char       larbid_remap[MTK_LARB_NR_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;
        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 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