| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (c) 2015-2016 MediaTek Inc. |
| * Author: Honghui Zhang <honghui.zhang@mediatek.com> |
| */ |
| |
| #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/io-pgtable.h> |
| #include <linux/iommu.h> |
| #include <linux/list.h> |
| #include <linux/spinlock.h> |
| #include <soc/mediatek/smi.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_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; |
| spinlock_t tlb_lock; /* lock for tlb range flush */ |
| |
| 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 |