1 /** 2 * Describes functions for converting PCI/PCI-X bus 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 <libcper/Cper.h> 11 #include <libcper/cper-utils.h> 12 #include <libcper/sections/cper-section-pci-bus.h> 13 14 //Converts a single PCI/PCI-X bus CPER section into JSON IR. 15 json_object *cper_section_pci_bus_to_ir(void *section) 16 { 17 EFI_PCI_PCIX_BUS_ERROR_DATA *bus_error = 18 (EFI_PCI_PCIX_BUS_ERROR_DATA *)section; 19 json_object *section_ir = json_object_new_object(); 20 21 //Validation bits. 22 json_object *validation = bitfield_to_ir( 23 bus_error->ValidFields, 9, PCI_BUS_ERROR_VALID_BITFIELD_NAMES); 24 json_object_object_add(section_ir, "validationBits", validation); 25 26 //Error status. 27 json_object *error_status = 28 cper_generic_error_status_to_ir(&bus_error->ErrorStatus); 29 json_object_object_add(section_ir, "errorStatus", error_status); 30 31 //PCI bus error type. 32 json_object *error_type = integer_to_readable_pair( 33 bus_error->Type, 8, PCI_BUS_ERROR_TYPES_KEYS, 34 PCI_BUS_ERROR_TYPES_VALUES, "Unknown (Reserved)"); 35 json_object_object_add(section_ir, "errorType", error_type); 36 37 //Bus ID. 38 json_object *bus_id = json_object_new_object(); 39 json_object_object_add(bus_id, "busNumber", 40 json_object_new_int(bus_error->BusId & 0xFF)); 41 json_object_object_add(bus_id, "segmentNumber", 42 json_object_new_int(bus_error->BusId >> 8)); 43 json_object_object_add(section_ir, "busID", bus_id); 44 45 //Miscellaneous numeric fields. 46 UINT8 command_type = (bus_error->BusCommand >> 56) & 47 0x1; //Byte 7, bit 0. 48 json_object_object_add(section_ir, "busAddress", 49 json_object_new_uint64(bus_error->BusAddress)); 50 json_object_object_add(section_ir, "busData", 51 json_object_new_uint64(bus_error->BusData)); 52 json_object_object_add( 53 section_ir, "busCommandType", 54 json_object_new_string(command_type == 0 ? "PCI" : "PCI-X")); 55 56 json_object_object_add(section_ir, "busRequestorID", 57 json_object_new_uint64(bus_error->RequestorId)); 58 59 char hexstring_buf[EFI_UINT64_HEX_STRING_LEN]; 60 snprintf(hexstring_buf, EFI_UINT64_HEX_STRING_LEN, "0x%016llX", 61 bus_error->RequestorId); 62 json_object_object_add(section_ir, "busRequestorIDHex", 63 json_object_new_string(hexstring_buf)); 64 65 json_object_object_add(section_ir, "busCompleterID", 66 json_object_new_uint64(bus_error->ResponderId)); 67 snprintf(hexstring_buf, EFI_UINT64_HEX_STRING_LEN, "0x%016llX", 68 bus_error->ResponderId); 69 json_object_object_add(section_ir, "busCompleterIDHex", 70 json_object_new_string(hexstring_buf)); 71 72 json_object_object_add(section_ir, "targetID", 73 json_object_new_uint64(bus_error->TargetId)); 74 75 return section_ir; 76 } 77 78 //Converts a single provided PCI/PCI-X bus CPER-JSON section into CPER binary, outputting to the 79 //provided stream. 80 void ir_section_pci_bus_to_cper(json_object *section, FILE *out) 81 { 82 EFI_PCI_PCIX_BUS_ERROR_DATA *section_cper = 83 (EFI_PCI_PCIX_BUS_ERROR_DATA *)calloc( 84 1, sizeof(EFI_PCI_PCIX_BUS_ERROR_DATA)); 85 86 //Validation bits. 87 section_cper->ValidFields = ir_to_bitfield( 88 json_object_object_get(section, "validationBits"), 9, 89 PCI_BUS_ERROR_VALID_BITFIELD_NAMES); 90 91 //Error status. 92 ir_generic_error_status_to_cper(json_object_object_get(section, 93 "errorStatus"), 94 §ion_cper->ErrorStatus); 95 96 //Bus ID. 97 json_object *bus_id = json_object_object_get(section, "busID"); 98 UINT16 bus_number = (UINT8)json_object_get_int( 99 json_object_object_get(bus_id, "busNumber")); 100 UINT16 segment_number = (UINT8)json_object_get_int( 101 json_object_object_get(bus_id, "segmentNumber")); 102 section_cper->BusId = bus_number + (segment_number << 8); 103 104 //Remaining fields. 105 UINT64 pcix_command = (UINT64)0x1 << 56; 106 const char *bus_command = json_object_get_string( 107 json_object_object_get(section, "busCommandType")); 108 section_cper->Type = (UINT16)readable_pair_to_integer( 109 json_object_object_get(section, "errorType")); 110 section_cper->BusAddress = json_object_get_uint64( 111 json_object_object_get(section, "busAddress")); 112 section_cper->BusData = json_object_get_uint64( 113 json_object_object_get(section, "busData")); 114 section_cper->BusCommand = 115 strcmp(bus_command, "PCI") == 0 ? 0 : pcix_command; 116 section_cper->RequestorId = json_object_get_uint64( 117 json_object_object_get(section, "busRequestorID")); 118 section_cper->ResponderId = json_object_get_uint64( 119 json_object_object_get(section, "busCompleterID")); 120 section_cper->TargetId = json_object_get_uint64( 121 json_object_object_get(section, "targetID")); 122 123 //Write to stream, free resources. 124 fwrite(section_cper, sizeof(EFI_PCI_PCIX_BUS_ERROR_DATA), 1, out); 125 fflush(out); 126 free(section_cper); 127 } 128