2 * Rockchip - System MMU support
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 #ifndef _ARM_MACH_RK_SYSMMU_H_
10 #define _ARM_MACH_RK_SYSMMU_H_
12 #include <linux/list.h>
13 #include <linux/atomic.h>
14 #include <linux/spinlock.h>
15 #include <linux/device.h>
17 #define IEP_SYSMMU_COMPATIBLE_NAME "iommu,iep_mmu"
18 #define VIP_SYSMMU_COMPATIBLE_NAME "iommu,vip_mmu"
20 #define ISP_SYSMMU_COMPATIBLE_NAME "iommu,isp_mmu"
22 #define VOPB_SYSMMU_COMPATIBLE_NAME "iommu,vopb_mmu"
23 #define VOPL_SYSMMU_COMPATIBLE_NAME "iommu,vopl_mmu"
25 #define VOP_SYSMMU_COMPATIBLE_NAME "iommu,vop_mmu"
27 #define HEVC_SYSMMU_COMPATIBLE_NAME "iommu,hevc_mmu"
28 #define VPU_SYSMMU_COMPATIBLE_NAME "iommu,vpu_mmu"
31 enum rk_sysmmu_inttype {
38 struct sysmmu_drvdata;
40 * @itype: type of fault.
41 * @pgtable_base: the physical address of page table base. This is 0 if @itype
43 * @fault_addr: the device (virtual) address that the System MMU tried to
44 * translated. This is 0 if @itype is SYSMMU_BUSERROR.
46 typedef int (*sysmmu_fault_handler_t)(struct device *dev,
47 enum rk_sysmmu_inttype itype,
48 unsigned long pgtable_base,
49 unsigned long fault_addr,
53 #ifdef CONFIG_ROCKCHIP_IOMMU
55 * rockchip_sysmmu_enable() - enable system mmu
56 * @owner: The device whose System MMU is about to be enabled.
57 * @pgd: Base physical address of the 1st level page table
59 * This function enable system mmu to transfer address
60 * from virtual address to physical address.
61 * Return non-zero if it fails to enable System MMU.
63 int rockchip_sysmmu_enable(struct device *owner, unsigned long pgd);
66 * rockchip_sysmmu_disable() - disable sysmmu mmu of ip
67 * @owner: The device whose System MMU is about to be disabled.
69 * This function disable system mmu to transfer address
70 * from virtual address to physical address
72 bool rockchip_sysmmu_disable(struct device *owner);
75 * rockchip_sysmmu_tlb_invalidate() - flush all TLB entry in system mmu
76 * @owner: The device whose System MMU.
78 * This function flush all TLB entry in system mmu
80 void rockchip_sysmmu_tlb_invalidate(struct device *owner);
82 /** rockchip_sysmmu_set_fault_handler() - Fault handler for System MMUs
83 * Called when interrupt occurred by the System MMUs
84 * The device drivers of peripheral devices that has a System MMU can implement
85 * a fault handler to resolve address translation fault by System MMU.
86 * The meanings of return value and parameters are described below.
88 * return value: non-zero if the fault is correctly resolved.
89 * zero if the fault is not handled.
91 void rockchip_sysmmu_set_fault_handler(struct device *dev,sysmmu_fault_handler_t handler);
93 #else /* CONFIG_ROCKCHIP_IOMMU */
94 static inline int rockchip_sysmmu_enable(struct device *owner, unsigned long pgd)
98 static inline bool rockchip_sysmmu_disable(struct device *owner)
102 static inline void rockchip_sysmmu_tlb_invalidate(struct device *owner)
105 static inline void rockchip_sysmmu_set_fault_handler(struct device *dev,sysmmu_fault_handler_t handler)
108 static inline void rockchip_sysmmu_set_prefbuf(struct device *owner,
109 unsigned long base0, unsigned long size0,
110 unsigned long base1, unsigned long size1)
115 #ifdef CONFIG_IOMMU_API
116 static inline void platform_set_sysmmu(struct device *sysmmu, struct device *dev)
118 dev->archdata.iommu = sysmmu;
121 static inline void platform_set_sysmmu(struct device *sysmmu, struct device *dev)
126 #endif /* _ARM_MACH_RK_SYSMMU_H_ */