[mirror_ubuntu-bionic-kernel.git] / drivers / iommu / mtk_iommu.h

/*
 * 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;
};

enum mtk_iommu_plat {
	M4U_MT2701,
	M4U_MT2712,
	M4U_MT8173,
};

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;
	struct mtk_smi_iommu		smi_imu;      /* SMI larb iommu info */
	bool                            enable_4GB;
	bool				tlb_flush_active;

	struct iommu_device		iommu;
	enum mtk_iommu_plat		m4u_plat;

	struct list_head		list;
};

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->smi_imu);
}

static inline void mtk_iommu_unbind(struct device *dev)
{
	struct mtk_iommu_data *data = dev_get_drvdata(dev);

	component_unbind_all(dev, &data->smi_imu);
}

#endif
Commit	Line	Data
9ca340c9 HZ	1	/*
	2	* Copyright (c) 2015-2016 MediaTek Inc.
	3	* Author: Honghui Zhang <honghui.zhang@mediatek.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*/
	14
	15	#ifndef _MTK_IOMMU_H_
	16	#define _MTK_IOMMU_H_
	17
	18	#include <linux/clk.h>
	19	#include <linux/component.h>
	20	#include <linux/device.h>
	21	#include <linux/io.h>
	22	#include <linux/iommu.h>
	23	#include <linux/list.h>
	24	#include <linux/spinlock.h>
	25	#include <soc/mediatek/smi.h>
	26
	27	#include "io-pgtable.h"
	28
	29	struct mtk_iommu_suspend_reg {
	30	u32 standard_axi_mode;
	31	u32 dcm_dis;
	32	u32 ctrl_reg;
	33	u32 int_control0;
	34	u32 int_main_control;
	35	};
	36
e6dec923 YW	37	enum mtk_iommu_plat {
	38	M4U_MT2701,
	39	M4U_MT2712,
	40	M4U_MT8173,
	41	};
	42
9ca340c9 HZ	43	struct mtk_iommu_domain;
	44
	45	struct mtk_iommu_data {
	46	void __iomem *base;
	47	int irq;
	48	struct device *dev;
	49	struct clk *bclk;
	50	phys_addr_t protect_base; /* protect memory base */
	51	struct mtk_iommu_suspend_reg reg;
	52	struct mtk_iommu_domain *m4u_dom;
	53	struct iommu_group *m4u_group;
	54	struct mtk_smi_iommu smi_imu; /* SMI larb iommu info */
	55	bool enable_4GB;
98a8f63e	56	bool tlb_flush_active;
b16c0170 JR	57
b16c0170 JR	58	struct iommu_device iommu;
e6dec923	59	enum mtk_iommu_plat m4u_plat;
7c3a2ec0 YW	60
7c3a2ec0 YW	61	struct list_head list;
9ca340c9 HZ	62	};
9ca340c9 HZ	63
9a8a5dcf	64	static inline int compare_of(struct device dev, void data)
9ca340c9 HZ	65	{
	66	return dev->of_node == data;
	67	}
	68
00c7c81f RK	69	static inline void release_of(struct device dev, void data)
	70	{
	71	of_node_put(data);
	72	}
	73
9a8a5dcf	74	static inline int mtk_iommu_bind(struct device *dev)
9ca340c9 HZ	75	{
	76	struct mtk_iommu_data *data = dev_get_drvdata(dev);
	77
	78	return component_bind_all(dev, &data->smi_imu);
	79	}
	80
9a8a5dcf	81	static inline void mtk_iommu_unbind(struct device *dev)
9ca340c9 HZ	82	{
	83	struct mtk_iommu_data *data = dev_get_drvdata(dev);
	84
	85	component_unbind_all(dev, &data->smi_imu);
	86	}
	87
	88	#endif