1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2015-2016 MediaTek Inc.
4 * Author: Honghui Zhang <honghui.zhang@mediatek.com>
10 #include <linux/clk.h>
11 #include <linux/component.h>
12 #include <linux/device.h>
14 #include <linux/io-pgtable.h>
15 #include <linux/iommu.h>
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <linux/dma-mapping.h>
19 #include <soc/mediatek/smi.h>
21 #define MTK_LARB_COM_MAX 8
22 #define MTK_LARB_SUBCOM_MAX 4
24 struct mtk_iommu_suspend_reg {
26 u32 standard_axi_mode;/* v1 */
27 u32 misc_ctrl;/* v2 */
46 struct mtk_iommu_plat_data {
47 enum mtk_iommu_plat m4u_plat;
50 unsigned char larbid_remap[MTK_LARB_COM_MAX][MTK_LARB_SUBCOM_MAX];
53 struct mtk_iommu_domain;
55 struct mtk_iommu_data {
60 phys_addr_t protect_base; /* protect memory base */
61 struct mtk_iommu_suspend_reg reg;
62 struct mtk_iommu_domain *m4u_dom;
63 struct iommu_group *m4u_group;
65 spinlock_t tlb_lock; /* lock for tlb range flush */
67 struct iommu_device iommu;
68 const struct mtk_iommu_plat_data *plat_data;
70 struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */
72 struct list_head list;
73 struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX];
76 static inline int compare_of(struct device *dev, void *data)
78 return dev->of_node == data;
81 static inline void release_of(struct device *dev, void *data)
86 static inline int mtk_iommu_bind(struct device *dev)
88 struct mtk_iommu_data *data = dev_get_drvdata(dev);
90 return component_bind_all(dev, &data->larb_imu);
93 static inline void mtk_iommu_unbind(struct device *dev)
95 struct mtk_iommu_data *data = dev_get_drvdata(dev);
97 component_unbind_all(dev, &data->larb_imu);