1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _UAPI_IOMMU_H 20 #define _UAPI_IOMMU_H 21 #include <linux/types.h> 22 #define IOMMU_FAULT_PERM_READ (1 << 0) 23 #define IOMMU_FAULT_PERM_WRITE (1 << 1) 24 #define IOMMU_FAULT_PERM_EXEC (1 << 2) 25 #define IOMMU_FAULT_PERM_PRIV (1 << 3) 26 enum iommu_fault_type { 27 IOMMU_FAULT_DMA_UNRECOV = 1, 28 IOMMU_FAULT_PAGE_REQ, 29 }; 30 enum iommu_fault_reason { 31 IOMMU_FAULT_REASON_UNKNOWN = 0, 32 IOMMU_FAULT_REASON_PASID_FETCH, 33 IOMMU_FAULT_REASON_BAD_PASID_ENTRY, 34 IOMMU_FAULT_REASON_PASID_INVALID, 35 IOMMU_FAULT_REASON_WALK_EABT, 36 IOMMU_FAULT_REASON_PTE_FETCH, 37 IOMMU_FAULT_REASON_PERMISSION, 38 IOMMU_FAULT_REASON_ACCESS, 39 IOMMU_FAULT_REASON_OOR_ADDRESS, 40 }; 41 struct iommu_fault_unrecoverable { 42 __u32 reason; 43 #define IOMMU_FAULT_UNRECOV_PASID_VALID (1 << 0) 44 #define IOMMU_FAULT_UNRECOV_ADDR_VALID (1 << 1) 45 #define IOMMU_FAULT_UNRECOV_FETCH_ADDR_VALID (1 << 2) 46 __u32 flags; 47 __u32 pasid; 48 __u32 perm; 49 __u64 addr; 50 __u64 fetch_addr; 51 }; 52 struct iommu_fault_page_request { 53 #define IOMMU_FAULT_PAGE_REQUEST_PASID_VALID (1 << 0) 54 #define IOMMU_FAULT_PAGE_REQUEST_LAST_PAGE (1 << 1) 55 #define IOMMU_FAULT_PAGE_REQUEST_PRIV_DATA (1 << 2) 56 #define IOMMU_FAULT_PAGE_RESPONSE_NEEDS_PASID (1 << 3) 57 __u32 flags; 58 __u32 pasid; 59 __u32 grpid; 60 __u32 perm; 61 __u64 addr; 62 __u64 private_data[2]; 63 }; 64 struct iommu_fault { 65 __u32 type; 66 __u32 padding; 67 union { 68 struct iommu_fault_unrecoverable event; 69 struct iommu_fault_page_request prm; 70 __u8 padding2[56]; 71 }; 72 }; 73 enum iommu_page_response_code { 74 IOMMU_PAGE_RESP_SUCCESS = 0, 75 IOMMU_PAGE_RESP_INVALID, 76 IOMMU_PAGE_RESP_FAILURE, 77 }; 78 struct iommu_page_response { 79 __u32 argsz; 80 #define IOMMU_PAGE_RESP_VERSION_1 1 81 __u32 version; 82 #define IOMMU_PAGE_RESP_PASID_VALID (1 << 0) 83 __u32 flags; 84 __u32 pasid; 85 __u32 grpid; 86 __u32 code; 87 }; 88 #endif 89