/** * Describes functions for converting PCIe CPER sections from binary and JSON format * into an intermediate format. * * Author: Lawrence.Tang@arm.com **/ #include #include #include #include #include #include #include //Converts a single PCIe CPER section into JSON IR. json_object *cper_section_pcie_to_ir(void *section) { EFI_PCIE_ERROR_DATA *pcie_error = (EFI_PCIE_ERROR_DATA *)section; json_object *section_ir = json_object_new_object(); //Validation bits. json_object *validation = bitfield_to_ir( pcie_error->ValidFields, 8, PCIE_ERROR_VALID_BITFIELD_NAMES); json_object_object_add(section_ir, "validationBits", validation); //Port type. json_object *port_type = integer_to_readable_pair( pcie_error->PortType, 9, PCIE_ERROR_PORT_TYPES_KEYS, PCIE_ERROR_PORT_TYPES_VALUES, "Unknown"); json_object_object_add(section_ir, "portType", port_type); //Version, provided each half in BCD. json_object *version = json_object_new_object(); json_object_object_add( version, "minor", json_object_new_int(bcd_to_int(pcie_error->Version & 0xFF))); json_object_object_add( version, "major", json_object_new_int(bcd_to_int(pcie_error->Version >> 8))); json_object_object_add(section_ir, "version", version); //Command & status. json_object *command_status = json_object_new_object(); json_object_object_add( command_status, "commandRegister", json_object_new_uint64(pcie_error->CommandStatus & 0xFFFF)); json_object_object_add( command_status, "statusRegister", json_object_new_uint64(pcie_error->CommandStatus >> 16)); json_object_object_add(section_ir, "commandStatus", command_status); //PCIe Device ID. json_object *device_id = json_object_new_object(); UINT64 class_id = (pcie_error->DevBridge.ClassCode[0] << 16) + (pcie_error->DevBridge.ClassCode[1] << 8) + pcie_error->DevBridge.ClassCode[2]; json_object_object_add( device_id, "vendorID", json_object_new_uint64(pcie_error->DevBridge.VendorId)); json_object_object_add( device_id, "deviceID", json_object_new_uint64(pcie_error->DevBridge.DeviceId)); json_object_object_add(device_id, "classCode", json_object_new_uint64(class_id)); json_object_object_add( device_id, "functionNumber", json_object_new_uint64(pcie_error->DevBridge.Function)); json_object_object_add( device_id, "deviceNumber", json_object_new_uint64(pcie_error->DevBridge.Device)); json_object_object_add( device_id, "segmentNumber", json_object_new_uint64(pcie_error->DevBridge.Segment)); json_object_object_add( device_id, "primaryOrDeviceBusNumber", json_object_new_uint64( pcie_error->DevBridge.PrimaryOrDeviceBus)); json_object_object_add( device_id, "secondaryBusNumber", json_object_new_uint64(pcie_error->DevBridge.SecondaryBus)); json_object_object_add( device_id, "slotNumber", json_object_new_uint64(pcie_error->DevBridge.Slot.Number)); json_object_object_add(section_ir, "deviceID", device_id); //Device serial number. json_object_object_add(section_ir, "deviceSerialNumber", json_object_new_uint64(pcie_error->SerialNo)); //Bridge control status. json_object *bridge_control_status = json_object_new_object(); json_object_object_add( bridge_control_status, "secondaryStatusRegister", json_object_new_uint64(pcie_error->BridgeControlStatus & 0xFFFF)); json_object_object_add( bridge_control_status, "controlRegister", json_object_new_uint64(pcie_error->BridgeControlStatus >> 16)); json_object_object_add(section_ir, "bridgeControlStatus", bridge_control_status); //Capability structure. //The PCIe capability structure provided here could either be PCIe 1.1 Capability Structure //(36-byte, padded to 60 bytes) or PCIe 2.0 Capability Structure (60-byte). There does not seem //to be a way to differentiate these, so this is left as a b64 dump. int32_t encoded_len = 0; char *encoded = base64_encode((UINT8 *)pcie_error->Capability.PcieCap, 60, &encoded_len); if (encoded == NULL) { printf("Failed to allocate encode output buffer. \n"); } else { json_object *capability = json_object_new_object(); json_object_object_add(capability, "data", json_object_new_string_len(encoded, encoded_len)); free(encoded); json_object_object_add(section_ir, "capabilityStructure", capability); } //AER information. json_object *aer_capability_ir = json_object_new_object(); encoded_len = 0; encoded = base64_encode((UINT8 *)pcie_error->AerInfo.PcieAer, 96, &encoded_len); if (encoded == NULL) { printf("Failed to allocate encode output buffer. \n"); } else { json_object_object_add(aer_capability_ir, "data", json_object_new_string_len(encoded, encoded_len)); free(encoded); } json_object_object_add(section_ir, "aerInfo", aer_capability_ir); return section_ir; } //Converts a single CPER-JSON PCIe section into CPER binary, outputting to the given stream. void ir_section_pcie_to_cper(json_object *section, FILE *out) { EFI_PCIE_ERROR_DATA *section_cper = (EFI_PCIE_ERROR_DATA *)calloc(1, sizeof(EFI_PCIE_ERROR_DATA)); //Validation bits. section_cper->ValidFields = ir_to_bitfield( json_object_object_get(section, "validationBits"), 8, PCIE_ERROR_VALID_BITFIELD_NAMES); //Version. json_object *version = json_object_object_get(section, "version"); UINT32 minor = int_to_bcd( json_object_get_int(json_object_object_get(version, "minor"))); UINT32 major = int_to_bcd( json_object_get_int(json_object_object_get(version, "major"))); section_cper->Version = minor + (major << 8); //Command/status registers. json_object *command_status = json_object_object_get(section, "commandStatus"); UINT32 command = (UINT16)json_object_get_uint64( json_object_object_get(command_status, "commandRegister")); UINT32 status = (UINT16)json_object_get_uint64( json_object_object_get(command_status, "statusRegister")); section_cper->CommandStatus = command + (status << 16); //Device ID. json_object *device_id = json_object_object_get(section, "deviceID"); UINT64 class_id = json_object_get_uint64( json_object_object_get(device_id, "classCode")); section_cper->DevBridge.VendorId = (UINT16)json_object_get_uint64( json_object_object_get(device_id, "vendorID")); section_cper->DevBridge.DeviceId = (UINT16)json_object_get_uint64( json_object_object_get(device_id, "deviceID")); section_cper->DevBridge.ClassCode[0] = class_id >> 16; section_cper->DevBridge.ClassCode[1] = (class_id >> 8) & 0xFF; section_cper->DevBridge.ClassCode[2] = class_id & 0xFF; section_cper->DevBridge.Function = (UINT8)json_object_get_uint64( json_object_object_get(device_id, "functionNumber")); section_cper->DevBridge.Device = (UINT8)json_object_get_uint64( json_object_object_get(device_id, "deviceNumber")); section_cper->DevBridge.Segment = (UINT16)json_object_get_uint64( json_object_object_get(device_id, "segmentNumber")); section_cper->DevBridge.PrimaryOrDeviceBus = (UINT8)json_object_get_uint64(json_object_object_get( device_id, "primaryOrDeviceBusNumber")); section_cper->DevBridge.SecondaryBus = (UINT8)json_object_get_uint64( json_object_object_get(device_id, "secondaryBusNumber")); section_cper->DevBridge.Slot.Number = (UINT16)json_object_get_uint64( json_object_object_get(device_id, "slotNumber")); //Bridge/control status. json_object *bridge_control = json_object_object_get(section, "bridgeControlStatus"); UINT32 bridge_status = (UINT16)json_object_get_uint64( json_object_object_get(bridge_control, "secondaryStatusRegister")); UINT32 control_status = (UINT16)json_object_get_uint64( json_object_object_get(bridge_control, "controlRegister")); section_cper->BridgeControlStatus = bridge_status + (control_status << 16); //Capability structure. json_object *capability = json_object_object_get(section, "capabilityStructure"); json_object *encoded = json_object_object_get(capability, "data"); int32_t decoded_len = 0; UINT8 *decoded = base64_decode(json_object_get_string(encoded), json_object_get_string_len(encoded), &decoded_len); if (decoded == NULL) { printf("Failed to allocate decode output buffer. \n"); } else { memcpy(section_cper->Capability.PcieCap, decoded, decoded_len); free(decoded); } //AER capability structure. json_object *aer_info = json_object_object_get(section, "aerInfo"); encoded = json_object_object_get(aer_info, "data"); decoded_len = 0; decoded = base64_decode(json_object_get_string(encoded), json_object_get_string_len(encoded), &decoded_len); if (decoded == NULL) { printf("Failed to allocate decode output buffer. \n"); } else { memcpy(section_cper->AerInfo.PcieAer, decoded, decoded_len); free(decoded); } //Miscellaneous value fields. section_cper->PortType = (UINT32)readable_pair_to_integer( json_object_object_get(section, "portType")); section_cper->SerialNo = json_object_get_uint64( json_object_object_get(section, "deviceSerialNumber")); //Write out to stream, free resources. fwrite(section_cper, sizeof(EFI_PCIE_ERROR_DATA), 1, out); fflush(out); free(section_cper); }