drivers/iommu/mtk_iommu.h

   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
  20 struct 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 };
  28
  29 enum mtk_iommu_plat {
  30         M4U_MT2701,
  31         M4U_MT2712,
  32         M4U_MT8173,
  33 };
  34
  35 struct mtk_iommu_domain;
  36
  37 struct mtk_iommu_data {
  38         void __iomem                    *base;
  39         int                             irq;
  40         struct device                   *dev;
  41         struct clk                      *bclk;
  42         phys_addr_t                     protect_base; /* protect memory base */
  43         struct mtk_iommu_suspend_reg    reg;
  44         struct mtk_iommu_domain         *m4u_dom;
  45         struct iommu_group              *m4u_group;
  46         struct mtk_smi_iommu            smi_imu;      /* SMI larb iommu info */
  47         bool                            enable_4GB;
  48         bool                            tlb_flush_active;
  49
  50         struct iommu_device             iommu;
  51         enum mtk_iommu_plat             m4u_plat;
  52
  53         struct list_head                list;
  54 };
  55
  56 static inline int compare_of(struct device *dev, void *data)
  57 {
  58         return dev->of_node == data;
  59 }
  60
  61 static inline void release_of(struct device *dev, void *data)
  62 {
  63         of_node_put(data);
  64 }
  65
  66 static inline int mtk_iommu_bind(struct device *dev)
  67 {
  68         struct mtk_iommu_data *data = dev_get_drvdata(dev);
  69
  70         return component_bind_all(dev, &data->smi_imu);
  71 }
  72
  73 static inline void mtk_iommu_unbind(struct device *dev)
  74 {
  75         struct mtk_iommu_data *data = dev_get_drvdata(dev);
  76
  77         component_unbind_all(dev, &data->smi_imu);
  78 }
  79
  80 #endif