xref: /OK3568_Linux_fs/kernel/include/soc/rockchip/rockchip_iommu.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (c) 2021 Rockchip Electronics Co., Ltd
4  */
5 #ifndef __SOC_ROCKCHIP_IOMMU_H
6 #define __SOC_ROCKCHIP_IOMMU_H
7 
8 struct device;
9 
10 #if IS_REACHABLE(CONFIG_ROCKCHIP_IOMMU)
11 int rockchip_iommu_enable(struct device *dev);
12 int rockchip_iommu_disable(struct device *dev);
13 int rockchip_pagefault_done(struct device *master_dev);
14 void __iomem *rockchip_get_iommu_base(struct device *master_dev, int idx);
15 bool rockchip_iommu_is_enabled(struct device *dev);
16 void rockchip_iommu_mask_irq(struct device *dev);
17 void rockchip_iommu_unmask_irq(struct device *dev);
18 int rockchip_iommu_force_reset(struct device *dev);
19 #else
rockchip_iommu_enable(struct device * dev)20 static inline int rockchip_iommu_enable(struct device *dev)
21 {
22 	return -ENODEV;
23 }
rockchip_iommu_disable(struct device * dev)24 static inline int rockchip_iommu_disable(struct device *dev)
25 {
26 	return -ENODEV;
27 }
rockchip_pagefault_done(struct device * master_dev)28 static inline int rockchip_pagefault_done(struct device *master_dev)
29 {
30 	return 0;
31 }
rockchip_get_iommu_base(struct device * master_dev,int idx)32 static inline void __iomem *rockchip_get_iommu_base(struct device *master_dev, int idx)
33 {
34 	return NULL;
35 }
rockchip_iommu_is_enabled(struct device * dev)36 static inline bool rockchip_iommu_is_enabled(struct device *dev)
37 {
38 	return false;
39 }
rockchip_iommu_mask_irq(struct device * dev)40 static inline void rockchip_iommu_mask_irq(struct device *dev)
41 {
42 }
rockchip_iommu_unmask_irq(struct device * dev)43 static inline void rockchip_iommu_unmask_irq(struct device *dev)
44 {
45 }
rockchip_iommu_force_reset(struct device * dev)46 static inline int rockchip_iommu_force_reset(struct device *dev)
47 {
48 	return -ENODEV;
49 }
50 #endif
51 
52 #endif
53