1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2015-2016 MediaTek Inc.
 4 * Author: Honghui Zhang <honghui.zhang@mediatek.com>
 5 */
 6
 7#ifndef _MTK_IOMMU_H_
 8#define _MTK_IOMMU_H_
 9
10#include <linux/clk.h>
11#include <linux/component.h>
12#include <linux/device.h>
13#include <linux/io.h>
14#include <linux/io-pgtable.h>
15#include <linux/iommu.h>
16#include <linux/list.h>
17#include <linux/spinlock.h>
18#include <soc/mediatek/smi.h>
19
20struct mtk_iommu_suspend_reg {
21	u32				standard_axi_mode;
22	u32				dcm_dis;
23	u32				ctrl_reg;
24	u32				int_control0;
25	u32				int_main_control;
26	u32				ivrp_paddr;
27	u32				vld_pa_rng;
28};
29
30enum mtk_iommu_plat {
31	M4U_MT2701,
32	M4U_MT2712,
33	M4U_MT8173,
34	M4U_MT8183,
35};
36
37struct mtk_iommu_plat_data {
38	enum mtk_iommu_plat m4u_plat;
39	bool                has_4gb_mode;
40
41	/* HW will use the EMI clock if there isn't the "bclk". */
42	bool                has_bclk;
43	bool                has_vld_pa_rng;
44	bool                reset_axi;
45	unsigned char       larbid_remap[MTK_LARB_NR_MAX];
46};
47
48struct mtk_iommu_domain;
49
50struct mtk_iommu_data {
51	void __iomem			*base;
52	int				irq;
53	struct device			*dev;
54	struct clk			*bclk;
55	phys_addr_t			protect_base; /* protect memory base */
56	struct mtk_iommu_suspend_reg	reg;
57	struct mtk_iommu_domain		*m4u_dom;
58	struct iommu_group		*m4u_group;
59	bool                            enable_4GB;
60	bool				tlb_flush_active;
61
62	struct iommu_device		iommu;
63	const struct mtk_iommu_plat_data *plat_data;
64
65	struct list_head		list;
66	struct mtk_smi_larb_iommu	larb_imu[MTK_LARB_NR_MAX];
67};
68
69static inline int compare_of(struct device *dev, void *data)
70{
71	return dev->of_node == data;
72}
73
74static inline void release_of(struct device *dev, void *data)
75{
76	of_node_put(data);
77}
78
79static inline int mtk_iommu_bind(struct device *dev)
80{
81	struct mtk_iommu_data *data = dev_get_drvdata(dev);
82
83	return component_bind_all(dev, &data->larb_imu);
84}
85
86static inline void mtk_iommu_unbind(struct device *dev)
87{
88	struct mtk_iommu_data *data = dev_get_drvdata(dev);
89
90	component_unbind_all(dev, &data->larb_imu);
91}
92
93#endif