1db1b7ce2SLawrence Tang /** 2db1b7ce2SLawrence Tang * Describes functions for converting IOMMU specific DMAr CPER sections from binary and JSON format 3db1b7ce2SLawrence Tang * into an intermediate format. 4db1b7ce2SLawrence Tang * 5db1b7ce2SLawrence Tang * Author: Lawrence.Tang@arm.com 6db1b7ce2SLawrence Tang **/ 7db1b7ce2SLawrence Tang #include <stdio.h> 8205dd1d7SLawrence Tang #include <string.h> 9*5202bbb4SLawrence Tang #include <json.h> 10d7e8ca34SLawrence Tang #include "b64.h" 11db1b7ce2SLawrence Tang #include "../edk/Cper.h" 12db1b7ce2SLawrence Tang #include "../cper-utils.h" 13db1b7ce2SLawrence Tang #include "cper-section-dmar-iommu.h" 14db1b7ce2SLawrence Tang 15db1b7ce2SLawrence Tang //Converts a single IOMMU specific DMAr CPER section into JSON IR. 16e407b4c8SLawrence Tang json_object * 17e407b4c8SLawrence Tang cper_section_dmar_iommu_to_ir(void *section, 18e407b4c8SLawrence Tang EFI_ERROR_SECTION_DESCRIPTOR *descriptor) 19db1b7ce2SLawrence Tang { 20e407b4c8SLawrence Tang EFI_IOMMU_DMAR_ERROR_DATA *iommu_error = 21e407b4c8SLawrence Tang (EFI_IOMMU_DMAR_ERROR_DATA *)section; 22db1b7ce2SLawrence Tang json_object *section_ir = json_object_new_object(); 23db1b7ce2SLawrence Tang 24db1b7ce2SLawrence Tang //Revision. 25e407b4c8SLawrence Tang json_object_object_add(section_ir, "revision", 26e407b4c8SLawrence Tang json_object_new_int(iommu_error->Revision)); 27db1b7ce2SLawrence Tang 28db1b7ce2SLawrence Tang //IOMMU registers. 29e407b4c8SLawrence Tang json_object_object_add(section_ir, "controlRegister", 30e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->Control)); 31e407b4c8SLawrence Tang json_object_object_add(section_ir, "statusRegister", 32e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->Status)); 33db1b7ce2SLawrence Tang 34db1b7ce2SLawrence Tang //IOMMU event log entry. 35ce0f82bfSLawrence Tang //The format of these entries differ widely by the type of error. 36e407b4c8SLawrence Tang char *encoded = 37e407b4c8SLawrence Tang b64_encode((unsigned char *)iommu_error->EventLogEntry, 16); 38e407b4c8SLawrence Tang json_object_object_add(section_ir, "eventLogEntry", 39e407b4c8SLawrence Tang json_object_new_string(encoded)); 40ce0f82bfSLawrence Tang free(encoded); 41db1b7ce2SLawrence Tang 42d7e8ca34SLawrence Tang //Device table entry (as base64). 43e407b4c8SLawrence Tang encoded = 44e407b4c8SLawrence Tang b64_encode((unsigned char *)iommu_error->DeviceTableEntry, 32); 45e407b4c8SLawrence Tang json_object_object_add(section_ir, "deviceTableEntry", 46e407b4c8SLawrence Tang json_object_new_string(encoded)); 47d7e8ca34SLawrence Tang free(encoded); 48db1b7ce2SLawrence Tang 49db1b7ce2SLawrence Tang //Page table entries. 50e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level6", 51e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL6)); 52e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level5", 53e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL5)); 54e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level4", 55e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL4)); 56e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level3", 57e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL3)); 58e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level2", 59e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL2)); 60e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level1", 61e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL1)); 62db1b7ce2SLawrence Tang 63db1b7ce2SLawrence Tang return section_ir; 64db1b7ce2SLawrence Tang } 65205dd1d7SLawrence Tang 66205dd1d7SLawrence Tang //Converts a single DMAR IOMMU CPER-JSON section into CPER binary, outputting to the given stream. 67205dd1d7SLawrence Tang void ir_section_dmar_iommu_to_cper(json_object *section, FILE *out) 68205dd1d7SLawrence Tang { 69205dd1d7SLawrence Tang EFI_IOMMU_DMAR_ERROR_DATA *section_cper = 70e407b4c8SLawrence Tang (EFI_IOMMU_DMAR_ERROR_DATA *)calloc( 71e407b4c8SLawrence Tang 1, sizeof(EFI_IOMMU_DMAR_ERROR_DATA)); 72205dd1d7SLawrence Tang 73205dd1d7SLawrence Tang //Revision, registers. 74e407b4c8SLawrence Tang section_cper->Revision = (UINT8)json_object_get_int( 75e407b4c8SLawrence Tang json_object_object_get(section, "revision")); 76e407b4c8SLawrence Tang section_cper->Control = json_object_get_uint64( 77e407b4c8SLawrence Tang json_object_object_get(section, "controlRegister")); 78e407b4c8SLawrence Tang section_cper->Status = json_object_get_uint64( 79e407b4c8SLawrence Tang json_object_object_get(section, "statusRegister")); 80205dd1d7SLawrence Tang 81205dd1d7SLawrence Tang //IOMMU event log entry. 82205dd1d7SLawrence Tang json_object *encoded = json_object_object_get(section, "eventLogEntry"); 83e407b4c8SLawrence Tang UINT8 *decoded = b64_decode(json_object_get_string(encoded), 84e407b4c8SLawrence Tang json_object_get_string_len(encoded)); 85205dd1d7SLawrence Tang memcpy(section_cper->EventLogEntry, decoded, 16); 86205dd1d7SLawrence Tang free(decoded); 87205dd1d7SLawrence Tang 88205dd1d7SLawrence Tang //Device table entry. 89205dd1d7SLawrence Tang encoded = json_object_object_get(section, "deviceTableEntry"); 90e407b4c8SLawrence Tang decoded = b64_decode(json_object_get_string(encoded), 91e407b4c8SLawrence Tang json_object_get_string_len(encoded)); 92205dd1d7SLawrence Tang memcpy(section_cper->DeviceTableEntry, decoded, 32); 93205dd1d7SLawrence Tang free(decoded); 94205dd1d7SLawrence Tang 95205dd1d7SLawrence Tang //Page table entries. 96e407b4c8SLawrence Tang section_cper->PteL1 = json_object_get_uint64( 97e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level1")); 98e407b4c8SLawrence Tang section_cper->PteL2 = json_object_get_uint64( 99e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level2")); 100e407b4c8SLawrence Tang section_cper->PteL3 = json_object_get_uint64( 101e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level3")); 102e407b4c8SLawrence Tang section_cper->PteL4 = json_object_get_uint64( 103e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level4")); 104e407b4c8SLawrence Tang section_cper->PteL5 = json_object_get_uint64( 105e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level5")); 106e407b4c8SLawrence Tang section_cper->PteL6 = json_object_get_uint64( 107e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level6")); 108205dd1d7SLawrence Tang 109205dd1d7SLawrence Tang //Write to stream, free resources. 1103ab351feSLawrence Tang fwrite(section_cper, sizeof(EFI_IOMMU_DMAR_ERROR_DATA), 1, out); 111205dd1d7SLawrence Tang fflush(out); 112205dd1d7SLawrence Tang free(section_cper); 113205dd1d7SLawrence Tang }