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> 95202bbb4SLawrence Tang #include <json.h> 10*f8fc7052SJohn Chung #include "libbase64.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. 16*f8fc7052SJohn Chung json_object *cper_section_dmar_iommu_to_ir(void *section) 17db1b7ce2SLawrence Tang { 18e407b4c8SLawrence Tang EFI_IOMMU_DMAR_ERROR_DATA *iommu_error = 19e407b4c8SLawrence Tang (EFI_IOMMU_DMAR_ERROR_DATA *)section; 20db1b7ce2SLawrence Tang json_object *section_ir = json_object_new_object(); 21db1b7ce2SLawrence Tang 22db1b7ce2SLawrence Tang //Revision. 23e407b4c8SLawrence Tang json_object_object_add(section_ir, "revision", 24e407b4c8SLawrence Tang json_object_new_int(iommu_error->Revision)); 25db1b7ce2SLawrence Tang 26db1b7ce2SLawrence Tang //IOMMU registers. 27e407b4c8SLawrence Tang json_object_object_add(section_ir, "controlRegister", 28e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->Control)); 29e407b4c8SLawrence Tang json_object_object_add(section_ir, "statusRegister", 30e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->Status)); 31db1b7ce2SLawrence Tang 32db1b7ce2SLawrence Tang //IOMMU event log entry. 33ce0f82bfSLawrence Tang //The format of these entries differ widely by the type of error. 34*f8fc7052SJohn Chung char *encoded = malloc(2 * 16); 35*f8fc7052SJohn Chung size_t encoded_len = 0; 36*f8fc7052SJohn Chung if (!encoded) { 37*f8fc7052SJohn Chung printf("Failed to allocate encode output buffer. \n"); 38*f8fc7052SJohn Chung } else { 39*f8fc7052SJohn Chung base64_encode((const char *)iommu_error->EventLogEntry, 16, 40*f8fc7052SJohn Chung encoded, &encoded_len, 0); 41e407b4c8SLawrence Tang json_object_object_add(section_ir, "eventLogEntry", 42*f8fc7052SJohn Chung json_object_new_string_len(encoded, 43*f8fc7052SJohn Chung encoded_len)); 44ce0f82bfSLawrence Tang free(encoded); 45*f8fc7052SJohn Chung } 46db1b7ce2SLawrence Tang 47d7e8ca34SLawrence Tang //Device table entry (as base64). 48*f8fc7052SJohn Chung encoded = malloc(2 * 32); 49*f8fc7052SJohn Chung encoded_len = 0; 50*f8fc7052SJohn Chung if (!encoded) { 51*f8fc7052SJohn Chung printf("Failed to allocate encode output buffer. \n"); 52*f8fc7052SJohn Chung } else { 53*f8fc7052SJohn Chung base64_encode((const char *)iommu_error->DeviceTableEntry, 32, 54*f8fc7052SJohn Chung encoded, &encoded_len, 0); 55e407b4c8SLawrence Tang json_object_object_add(section_ir, "deviceTableEntry", 56*f8fc7052SJohn Chung json_object_new_string_len(encoded, 57*f8fc7052SJohn Chung encoded_len)); 58d7e8ca34SLawrence Tang free(encoded); 59*f8fc7052SJohn Chung } 60db1b7ce2SLawrence Tang 61db1b7ce2SLawrence Tang //Page table entries. 62e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level6", 63e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL6)); 64e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level5", 65e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL5)); 66e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level4", 67e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL4)); 68e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level3", 69e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL3)); 70e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level2", 71e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL2)); 72e407b4c8SLawrence Tang json_object_object_add(section_ir, "pageTableEntry_Level1", 73e407b4c8SLawrence Tang json_object_new_uint64(iommu_error->PteL1)); 74db1b7ce2SLawrence Tang 75db1b7ce2SLawrence Tang return section_ir; 76db1b7ce2SLawrence Tang } 77205dd1d7SLawrence Tang 78205dd1d7SLawrence Tang //Converts a single DMAR IOMMU CPER-JSON section into CPER binary, outputting to the given stream. 79205dd1d7SLawrence Tang void ir_section_dmar_iommu_to_cper(json_object *section, FILE *out) 80205dd1d7SLawrence Tang { 81205dd1d7SLawrence Tang EFI_IOMMU_DMAR_ERROR_DATA *section_cper = 82e407b4c8SLawrence Tang (EFI_IOMMU_DMAR_ERROR_DATA *)calloc( 83e407b4c8SLawrence Tang 1, sizeof(EFI_IOMMU_DMAR_ERROR_DATA)); 84205dd1d7SLawrence Tang 85205dd1d7SLawrence Tang //Revision, registers. 86e407b4c8SLawrence Tang section_cper->Revision = (UINT8)json_object_get_int( 87e407b4c8SLawrence Tang json_object_object_get(section, "revision")); 88e407b4c8SLawrence Tang section_cper->Control = json_object_get_uint64( 89e407b4c8SLawrence Tang json_object_object_get(section, "controlRegister")); 90e407b4c8SLawrence Tang section_cper->Status = json_object_get_uint64( 91e407b4c8SLawrence Tang json_object_object_get(section, "statusRegister")); 92205dd1d7SLawrence Tang 93205dd1d7SLawrence Tang //IOMMU event log entry. 94205dd1d7SLawrence Tang json_object *encoded = json_object_object_get(section, "eventLogEntry"); 95*f8fc7052SJohn Chung char *decoded = malloc(json_object_get_string_len(encoded)); 96*f8fc7052SJohn Chung size_t decoded_len = 0; 97*f8fc7052SJohn Chung if (!decoded) { 98*f8fc7052SJohn Chung printf("Failed to allocate decode output buffer. \n"); 99*f8fc7052SJohn Chung } else { 100*f8fc7052SJohn Chung base64_decode(json_object_get_string(encoded), 101*f8fc7052SJohn Chung json_object_get_string_len(encoded), decoded, 102*f8fc7052SJohn Chung &decoded_len, 0); 103*f8fc7052SJohn Chung memcpy(section_cper->EventLogEntry, decoded, decoded_len); 104205dd1d7SLawrence Tang free(decoded); 105*f8fc7052SJohn Chung } 106205dd1d7SLawrence Tang 107205dd1d7SLawrence Tang //Device table entry. 108205dd1d7SLawrence Tang encoded = json_object_object_get(section, "deviceTableEntry"); 109*f8fc7052SJohn Chung decoded = malloc(json_object_get_string_len(encoded)); 110*f8fc7052SJohn Chung decoded_len = 0; 111*f8fc7052SJohn Chung if (!decoded) { 112*f8fc7052SJohn Chung printf("Failed to allocate decode output buffer. \n"); 113*f8fc7052SJohn Chung } else { 114*f8fc7052SJohn Chung base64_decode(json_object_get_string(encoded), 115*f8fc7052SJohn Chung json_object_get_string_len(encoded), decoded, 116*f8fc7052SJohn Chung &decoded_len, 0); 117*f8fc7052SJohn Chung memcpy(section_cper->DeviceTableEntry, decoded, decoded_len); 118205dd1d7SLawrence Tang free(decoded); 119*f8fc7052SJohn Chung } 120205dd1d7SLawrence Tang 121205dd1d7SLawrence Tang //Page table entries. 122e407b4c8SLawrence Tang section_cper->PteL1 = json_object_get_uint64( 123e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level1")); 124e407b4c8SLawrence Tang section_cper->PteL2 = json_object_get_uint64( 125e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level2")); 126e407b4c8SLawrence Tang section_cper->PteL3 = json_object_get_uint64( 127e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level3")); 128e407b4c8SLawrence Tang section_cper->PteL4 = json_object_get_uint64( 129e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level4")); 130e407b4c8SLawrence Tang section_cper->PteL5 = json_object_get_uint64( 131e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level5")); 132e407b4c8SLawrence Tang section_cper->PteL6 = json_object_get_uint64( 133e407b4c8SLawrence Tang json_object_object_get(section, "pageTableEntry_Level6")); 134205dd1d7SLawrence Tang 135205dd1d7SLawrence Tang //Write to stream, free resources. 1363ab351feSLawrence Tang fwrite(section_cper, sizeof(EFI_IOMMU_DMAR_ERROR_DATA), 1, out); 137205dd1d7SLawrence Tang fflush(out); 138205dd1d7SLawrence Tang free(section_cper); 139205dd1d7SLawrence Tang } 140