1 /** 2 * Describes functions for converting VT-d specific DMAr CPER sections from binary and JSON format 3 * into an intermediate format. 4 * 5 * Author: Lawrence.Tang@arm.com 6 **/ 7 #include <stdio.h> 8 #include <string.h> 9 #include "json.h" 10 #include "b64.h" 11 #include "../edk/Cper.h" 12 #include "../cper-utils.h" 13 #include "cper-section-dmar-vtd.h" 14 15 //Converts a single VT-d specific DMAr CPER section into JSON IR. 16 json_object* cper_section_dmar_vtd_to_ir(void* section, EFI_ERROR_SECTION_DESCRIPTOR* descriptor) 17 { 18 EFI_DIRECTED_IO_DMAR_ERROR_DATA* vtd_error = (EFI_DIRECTED_IO_DMAR_ERROR_DATA*)section; 19 json_object* section_ir = json_object_new_object(); 20 21 //Version, revision and OEM ID, as defined in the VT-d architecture. 22 UINT64 oem_id = 0; 23 for (int i=0; i<6; i++) 24 oem_id |= (UINT64)vtd_error->OemId[i] << (i * 8); 25 json_object_object_add(section_ir, "version", json_object_new_int(vtd_error->Version)); 26 json_object_object_add(section_ir, "revision", json_object_new_int(vtd_error->Revision)); 27 json_object_object_add(section_ir, "oemID", json_object_new_uint64(oem_id)); 28 29 //Registers. 30 json_object_object_add(section_ir, "capabilityRegister", json_object_new_uint64(vtd_error->Capability)); 31 json_object_object_add(section_ir, "extendedCapabilityRegister", json_object_new_uint64(vtd_error->CapabilityEx)); 32 json_object_object_add(section_ir, "globalCommandRegister", json_object_new_uint64(vtd_error->GlobalCommand)); 33 json_object_object_add(section_ir, "globalStatusRegister", json_object_new_uint64(vtd_error->GlobalStatus)); 34 json_object_object_add(section_ir, "faultStatusRegister", json_object_new_uint64(vtd_error->FaultStatus)); 35 36 //Fault record basic fields. 37 json_object* fault_record_ir = json_object_new_object(); 38 EFI_VTD_FAULT_RECORD* fault_record = (EFI_VTD_FAULT_RECORD*)vtd_error->FaultRecord; 39 json_object_object_add(fault_record_ir, "faultInformation", json_object_new_uint64(fault_record->FaultInformation)); 40 json_object_object_add(fault_record_ir, "sourceIdentifier", json_object_new_uint64(fault_record->SourceIdentifier)); 41 json_object_object_add(fault_record_ir, "privelegeModeRequested", 42 json_object_new_boolean(fault_record->PrivelegeModeRequested)); 43 json_object_object_add(fault_record_ir, "executePermissionRequested", 44 json_object_new_boolean(fault_record->ExecutePermissionRequested)); 45 json_object_object_add(fault_record_ir, "pasidPresent", json_object_new_boolean(fault_record->PasidPresent)); 46 json_object_object_add(fault_record_ir, "faultReason", json_object_new_uint64(fault_record->FaultReason)); 47 json_object_object_add(fault_record_ir, "pasidValue", json_object_new_uint64(fault_record->PasidValue)); 48 json_object_object_add(fault_record_ir, "addressType", json_object_new_uint64(fault_record->AddressType)); 49 50 //Fault record type. 51 json_object* fault_record_type = integer_to_readable_pair(fault_record->Type, 2, 52 VTD_FAULT_RECORD_TYPES_KEYS, 53 VTD_FAULT_RECORD_TYPES_VALUES, 54 "Unknown"); 55 json_object_object_add(fault_record_ir, "type", fault_record_type); 56 json_object_object_add(section_ir, "faultRecord", fault_record_ir); 57 58 //Root entry. 59 char* encoded = b64_encode((unsigned char*)vtd_error->RootEntry, 16); 60 json_object_object_add(section_ir, "rootEntry", json_object_new_string(encoded)); 61 free(encoded); 62 63 //Context entry. 64 encoded = b64_encode((unsigned char*)vtd_error->ContextEntry, 16); 65 json_object_object_add(section_ir, "contextEntry", json_object_new_string(encoded)); 66 free(encoded); 67 68 //PTE entry for all page levels. 69 json_object_object_add(section_ir, "pageTableEntry_Level6", json_object_new_uint64(vtd_error->PteL6)); 70 json_object_object_add(section_ir, "pageTableEntry_Level5", json_object_new_uint64(vtd_error->PteL5)); 71 json_object_object_add(section_ir, "pageTableEntry_Level4", json_object_new_uint64(vtd_error->PteL4)); 72 json_object_object_add(section_ir, "pageTableEntry_Level3", json_object_new_uint64(vtd_error->PteL3)); 73 json_object_object_add(section_ir, "pageTableEntry_Level2", json_object_new_uint64(vtd_error->PteL2)); 74 json_object_object_add(section_ir, "pageTableEntry_Level1", json_object_new_uint64(vtd_error->PteL1)); 75 76 return section_ir; 77 } 78 79 //Converts a single VT-d DMAR CPER-JSON segment into CPER binary, outputting to the given stream. 80 void ir_section_dmar_vtd_to_cper(json_object* section, FILE* out) 81 { 82 EFI_DIRECTED_IO_DMAR_ERROR_DATA* section_cper = 83 (EFI_DIRECTED_IO_DMAR_ERROR_DATA*)calloc(1, sizeof(EFI_DIRECTED_IO_DMAR_ERROR_DATA)); 84 85 //OEM ID. 86 UINT64 oem_id = json_object_get_uint64(json_object_object_get(section, "oemID")); 87 for (int i=0; i<6; i++) 88 section_cper->OemId[i] = (oem_id >> (i * 8)) & 0xFF; 89 90 //Registers & basic numeric fields. 91 section_cper->Version = (UINT8)json_object_get_int(json_object_object_get(section, "version")); 92 section_cper->Revision = (UINT8)json_object_get_int(json_object_object_get(section, "revision")); 93 section_cper->Capability = json_object_get_uint64(json_object_object_get(section, "capabilityRegister")); 94 section_cper->CapabilityEx = json_object_get_uint64(json_object_object_get(section, "extendedCapabilityRegister")); 95 section_cper->GlobalCommand = json_object_get_uint64(json_object_object_get(section, "globalCommandRegister")); 96 section_cper->GlobalStatus = json_object_get_uint64(json_object_object_get(section, "globalStatusRegister")); 97 section_cper->FaultStatus = json_object_get_uint64(json_object_object_get(section, "faultStatusRegister")); 98 99 //Fault record. 100 json_object* fault_record = json_object_object_get(section, "faultRecord"); 101 EFI_VTD_FAULT_RECORD* fault_record_cper = (EFI_VTD_FAULT_RECORD*)section_cper->FaultRecord; 102 fault_record_cper->FaultInformation = 103 json_object_get_uint64(json_object_object_get(fault_record, "faultInformation")); 104 fault_record_cper->SourceIdentifier = 105 json_object_get_uint64(json_object_object_get(fault_record, "sourceIdentifier")); 106 fault_record_cper->PrivelegeModeRequested = 107 json_object_get_boolean(json_object_object_get(fault_record, "privelegeModeRequested")); 108 fault_record_cper->ExecutePermissionRequested = 109 json_object_get_boolean(json_object_object_get(fault_record, "executePermissionRequested")); 110 fault_record_cper->PasidPresent = 111 json_object_get_boolean(json_object_object_get(fault_record, "pasidPresent")); 112 fault_record_cper->FaultReason = 113 json_object_get_uint64(json_object_object_get(fault_record, "faultReason")); 114 fault_record_cper->PasidValue = 115 json_object_get_uint64(json_object_object_get(fault_record, "pasidValue")); 116 fault_record_cper->AddressType = 117 json_object_get_uint64(json_object_object_get(fault_record, "addressType")); 118 fault_record_cper->Type = 119 readable_pair_to_integer(json_object_object_get(fault_record, "type")); 120 121 //Root entry. 122 json_object* encoded = json_object_object_get(section, "rootEntry"); 123 UINT8* decoded = b64_decode(json_object_get_string(encoded), json_object_get_string_len(encoded)); 124 memcpy(section_cper->RootEntry, decoded, 16); 125 free(decoded); 126 127 //Context entry. 128 encoded = json_object_object_get(section, "contextEntry"); 129 decoded = b64_decode(json_object_get_string(encoded), json_object_get_string_len(encoded)); 130 memcpy(section_cper->ContextEntry, decoded, 16); 131 free(decoded); 132 133 //Page table entries. 134 section_cper->PteL1 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level1")); 135 section_cper->PteL2 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level2")); 136 section_cper->PteL3 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level3")); 137 section_cper->PteL4 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level4")); 138 section_cper->PteL5 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level5")); 139 section_cper->PteL6 = json_object_get_uint64(json_object_object_get(section, "pageTableEntry_Level6")); 140 141 //Write to stream, free resources. 142 fwrite(section_cper, sizeof(EFI_DIRECTED_IO_DMAR_ERROR_DATA), 1, out); 143 fflush(out); 144 free(section_cper); 145 }