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/*
* Copyright (c) 2015-2016 MediaTek Inc.
* Author: Honghui Zhang <honghui.zhang@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#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/iommu.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <soc/mediatek/smi.h>
#include "io-pgtable.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_MT8167,
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;
bool tlb_flush_active;
struct iommu_device iommu;
const struct mtk_iommu_plat_data *plat_data;
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