| #!/usr/bin/python3 |
| |
| # SPDX-License-Identifier: Apache-2.0 |
| # Copyright 2020 IBM Corp. |
| |
| import csv |
| import sys |
| from collections import namedtuple |
| from pprint import pprint |
| from datetime import time, timedelta |
| import argparse |
| import enum |
| import crc8 |
| |
| class UCD90320Command(bytes, enum.Enum): |
| def __new__(cls, value, width): |
| obj = bytes.__new__(cls, [value]) |
| obj._value_ = value |
| obj.width = width |
| return obj |
| |
| MONITOR_CONFIG = (0xd5, -1) |
| NUM_PAGES = (0xd6, 1) |
| GPIO_SELECT = (0xfa, 1) |
| GPIO_CONFIG = (0xfb, 1) |
| DEVICE_ID = (0xfd, -1) |
| |
| class PMBusCommand(bytes, enum.Enum): |
| def __new__(cls, value, width): |
| obj = bytes.__new__(cls, [value]) |
| obj._value_ = value |
| obj.width = width |
| return obj |
| |
| PAGE = (0x00, 1) |
| OPERATION = (0x01, 1) |
| ON_OFF_CONFIG = (0x02, 1) |
| CLEAR_FAULTS = (0x03, 0) |
| PHASE = (0x04, 1) |
| PAGE_PLUS_WRITE = (0x05, -1) |
| PAGE_PLUS_READ = (0x06, -1) |
| WRITE_PROTECT = (0x10, 1) |
| STORE_DEFAULT_ALL = (0x11, 0) |
| RESTORE_DEFAULT_ALL = (0x12, 0) |
| STORE_DEFAULT_CODE = (0x13, 1) |
| RESTORE_DEFAULT_CODE = (0x14, 1) |
| STORE_USER_ALL = (0x15, 0) |
| RESTORE_USER_ALL = (0x16, 0) |
| STORE_USER_CODE = (0x17, 1) |
| RESTORE_USER_CODE = (0x18, 1) |
| CAPABILITY = (0x19, 1) |
| QUERY = (0x1a, 1) |
| SMBALERT_MASK = (0x1b, 2) |
| VOUT_MODE = (0x20, 1) |
| VOUT_COMMAND = (0x21, 2) |
| VOUT_CAL_OFFSET = (0x23, 2) |
| POUT_MAX = (0x31, 2) |
| FREQUENCY_SWITCH = (0x33, 2) |
| VIN_OFF = (0x36, 2) |
| FAN_COMMAND_1 = (0x3b, 2) |
| FAN_COMMAND_4 = (0x3f, 2) |
| VOUT_OV_FAULT_LIMIT = (0x40, 2) |
| VOUT_OV_WARN_LIMIT = (0x42, 2) |
| VOUT_UV_WARN_LIMIT = (0x43, 2) |
| VOUT_UV_FAULT_LIMIT = (0x44, 2) |
| IOUT_OC_LV_FAULT_LIMIT = (0x48, 2) |
| IOUT_OC_LV_FAULT_RESPONSE = (0x49, 1) |
| IOUT_UC_FAULT_RESPONSE = (0x4c, 1) |
| OT_FAULT_LIMIT = (0x4f, 2) |
| OT_WARN_LIMIT = (0x51, 2) |
| UT_WARN_LIMIT = (0x52, 2) |
| UT_FAULT_LIMIT = (0x53, 2) |
| VIN_UV_FAULT_LIMIT = (0x59, 2) |
| IIN_OC_FAULT_RESPONSE = (0x5c, 1) |
| TOFF_MAX_WARN_LIMIT = (0x66, 2) |
| STATUS_WORD = (0x79, 2) |
| STATUS_CML = (0x7e, 1) |
| STATUS_OTHER = (0x7f, 1) |
| STATUS_MFR_SPECIFIC = (0x80, 1) |
| READ_TEMPERATURE_3 = (0x8f, 2) |
| PMBUS_REVISION = (0x98, 1) |
| MFR_MODEL = (0x9a, -1) |
| IC_DEVICE_REV = (0xae, -1) |
| USER_DATA_00 = (0xb0, -1) |
| USER_DATA_08 = (0xb8, -1) |
| MFR_SPECIFIC_05 = (0xd5, None) |
| MFR_SPECIFIC_06 = (0xd6, None) |
| MFR_SPECIFIC_42 = (0xfa, None) |
| MFR_SPECIFIC_43 = (0xfb, None) |
| MFR_SPECIFIC_45 = (0xfd, None) |
| |
| |
| class I2CCondition(enum.Enum): |
| START = 0 |
| STOP = 1 |
| |
| class I2CRecord(enum.Enum): |
| WRITE = 0 |
| READ = 1 |
| |
| class I2CResponse(enum.Enum): |
| ACK = 0 |
| NACK = 1 |
| |
| # Level,Index,m:s.ms.us,Dur,Len,Err,S/P,Addr,Record,Data |
| # 0,1,0:29.722.525,210.600 us,1 B,,S,32,Write Transaction,0E |
| I2CTransfer = namedtuple("I2CTransfer", ("level", "index", "timestamp", "duration", "length", "error", "conditions", "address", "record", "data")) |
| Timestamp = namedtuple("Timestamp", ["minutes", "seconds", "milliseconds", "microseconds"]) |
| I2CData = namedtuple("I2CData", ["response", "data"]) |
| |
| SMBusTransfer = namedtuple("SMBusTransfer", ["command", "response"]) |
| |
| def to_duration(field): |
| if field.endswith("us"): |
| if "." in field: |
| ms, us, _ = 0, *field.split(".") |
| else: |
| ms, us = 0, int(field.rstrip("us")) |
| elif field.endswith("ms"): |
| if "." in field: |
| ms, us, _ = field.split(".") |
| else: |
| ms, us = int(field.rstrip("ms")), 0 |
| else: |
| raise ValueError |
| return timedelta(milliseconds=int(ms), microseconds=int(us)) |
| |
| def to_timestamp(field): |
| ts = Timestamp(*list(int(v) for v in field.replace(":", ".").split("."))) |
| return time(0, ts.minutes, ts.seconds, ts.milliseconds * 1000 + ts.microseconds) |
| |
| def to_i2cdata(field): |
| resp = I2CResponse.NACK if field.endswith("*") else I2CResponse.ACK |
| return I2CData(resp, bytes(int(v, 16) for v in field.rstrip("*").split())) |
| |
| def to_address(field): |
| return int(field, 16) |
| |
| def to_i2cconditions(field): |
| if "S" == field: |
| return { I2CCondition.START } |
| elif "SP" == field: |
| return { I2CCondition.START, I2CCondition.STOP } |
| raise ValueError |
| |
| def to_i2crecord(field): |
| if "Write Transaction" == field: |
| return I2CRecord.WRITE |
| if "Read Transaction" == field: |
| return I2CRecord.READ |
| raise ValueError |
| |
| def to_i2ctransfer(line): |
| return I2CTransfer(*line[:2], |
| to_timestamp(line[2]), |
| to_duration(line[3]), |
| *line[4:6], |
| to_i2cconditions(line[6]), |
| to_address(line[7]), |
| to_i2crecord(line[8]), |
| to_i2cdata(line[9])) |
| |
| def pmbuscommand_style(xfer): |
| return PMBusCommand(xfer.data.data[0]) |
| |
| def ucd90320command_style(xfer): |
| try: |
| return UCD90320Command(xfer.data.data[0]) |
| except: |
| return pmbuscommand_style(xfer) |
| |
| def as_smbustransfers(i2cxfers, style): |
| command = None |
| for i2cxfer in i2cxfers: |
| if i2cxfer.conditions == { I2CCondition.START }: |
| assert not command |
| command = i2cxfer |
| if i2cxfer.conditions == { I2CCondition.START, I2CCondition.STOP }: |
| if command: |
| yield PMBusRead(style(command), command, i2cxfer) |
| command = None |
| else: |
| yield PMBusWrite(style(i2cxfer), i2cxfer) |
| |
| def smbus_pec(data): |
| hash = crc8.crc8() |
| hash.update(data) |
| return hash.digest()[0] |
| |
| def smbus_pec_pack_address(address, record): |
| return (address << 1) | record.value |
| |
| class PMBusTransfer(object): |
| def calculate_pec(self): |
| raise NotImplemented |
| |
| def validate_pec(self): |
| if self.pec is None: |
| return True |
| derived = self.calculate_pec() |
| provided = self.pec |
| return provided == derived |
| |
| def validate_xfer(self): |
| raise NotImplemented |
| |
| def valid(self): |
| return self.validate_xfer() and self.validate_pec() |
| |
| class PMBusWrite(PMBusTransfer): |
| def __init__(self, command, xfer): |
| assert xfer.record == I2CRecord.WRITE |
| self.command = command |
| self.xfer = xfer |
| |
| if command.width is None: |
| start, end = 1, len(xfer.data.data) |
| elif command.width == -1: |
| start, end = 1, xfer.data.data[0] + 1 |
| else: |
| start, end = 1, command.width + 1 |
| |
| self.data = xfer.data.data[start:end] |
| tail = self.data[end:] |
| |
| if len(tail) == 1: |
| self.pec, = tail |
| else: |
| self.pec = None |
| |
| self.response = xfer.data.response |
| |
| def calculate_pec(self): |
| data = (smbus_pec_pack_address(self.xfer.address, self.xfer.record), |
| *self.xfer.data.data[:-1]) |
| return smbus_pec(bytes(data)) |
| |
| def validate_xfer(self): |
| return self.response == I2CResponse.ACK |
| |
| def __str__(self): |
| timestamp = self.xfer.timestamp.strftime("%M:%S.%f") |
| duration = self.xfer.duration.total_seconds() |
| data = "[ " + " ".join("{:02x}".format(v) for v in self.data) + " ]" |
| |
| status = [] |
| if self.response != I2CResponse.ACK: |
| status.append(self.response.name) |
| |
| if not self.validate_pec(): |
| status.append("!PEC") |
| |
| if status: |
| status = " ".join(status) |
| fmt = "{0} {1:.6f} 0x{2.xfer.address:x} {3.name} {2.command.name} {4} {5}" |
| return fmt.format(timestamp, duration, self, I2CRecord.WRITE, data, status) |
| |
| fmt = "{0} {1:.6f} 0x{2.xfer.address:x} {3.name} {2.command.name} {4}" |
| return fmt.format(timestamp, duration, self, I2CRecord.WRITE, data) |
| |
| class PMBusRead(PMBusTransfer): |
| def __init__(self, command, start, repeat): |
| assert repeat.record == I2CRecord.READ |
| self.command = command |
| self.start = start |
| self.repeat = repeat |
| assert start.address == repeat.address |
| self.address = start.address |
| |
| if self.command.width is None: |
| start, end = 0, len(repeat.data.data) |
| elif self.command.width == -1: |
| start, end = 1, repeat.data.data[0] + 1 |
| else: |
| start, end = 0, command.width |
| |
| self.data = repeat.data.data[start:end] |
| tail = repeat.data.data[end:] |
| |
| if len(tail) == 1: |
| self.pec, = tail |
| else: |
| self.pec = None |
| |
| self.response = repeat.data.response |
| |
| def calculate_pec(self): |
| data = (smbus_pec_pack_address(self.start.address, self.start.record), |
| *self.start.data.data, |
| smbus_pec_pack_address(self.repeat.address, self.repeat.record), |
| *self.repeat.data.data[:-1]) |
| return smbus_pec(bytes(data)) |
| |
| def validate_xfer(self): |
| return (self.start.data.response == I2CResponse.ACK and |
| self.repeat.data.response == I2CResponse.NACK) |
| |
| def __str__(self): |
| timestamp = self.start.timestamp.strftime("%M:%S.%f") |
| duration = self.start.duration.total_seconds() |
| |
| status = [] |
| if self.start.data.response != I2CResponse.ACK: |
| status.append(self.start.data.response.name) |
| |
| if status: |
| status = " ".join(status) |
| fmt = "{0} {1:.6f} 0x{2.address:x} {3.name} {2.command.name} {4}" |
| start = fmt.format(timestamp, duration, self, I2CRecord.READ, status) |
| else: |
| fmt = "{0} {1:.6f} 0x{2.address:x} {3.name} {2.command.name}" |
| start = fmt.format(timestamp, duration, self, I2CRecord.READ) |
| |
| timestamp = self.repeat.timestamp.strftime("%M:%S.%f") |
| duration = self.repeat.duration.total_seconds() |
| data = " ".join("{:02x}".format(v) for v in self.data) |
| data = "[ " + data + " ]" |
| |
| status = [] |
| if self.repeat.data.response != I2CResponse.NACK: |
| status.append(self.repeat.data.response.name) |
| |
| if not self.validate_pec(): |
| status.append("!PEC") |
| |
| status = " ".join(status) |
| fmt = "{0} {1:.6f} {2} {3}" |
| repeat = fmt.format(timestamp, duration, data, status) |
| |
| return start + " | " + repeat |
| |
| def filter_source(src): |
| for line in src: |
| if not line: |
| continue |
| if line.startswith("#"): |
| continue |
| if "Capture started" in line: |
| continue |
| if "Capture stopped" in line: |
| continue |
| yield line |
| |
| def main(): |
| parser = argparse.ArgumentParser() |
| parser.add_argument("--after", type=str) |
| parser.add_argument("--before", type=str) |
| parser.add_argument("--longer-than", type=str) |
| parser.add_argument("--address", type=lambda x: int(x, 0)) |
| parser.add_argument("--pmbus", action="store_true") |
| parser.add_argument("--ucd90320", action="store_true") |
| parser.add_argument("--bad-transfers", action="store_true") |
| parser.add_argument("file", type=str) |
| args = parser.parse_args() |
| with open(args.file, "r") as src: |
| data = (line for line in filter_source(src.readlines())) |
| xfers = (to_i2ctransfer(e) for e in csv.reader(data)) |
| if args.after: |
| after = to_timestamp(args.after) |
| xfers = (e for e in xfers if e.timestamp > after) |
| if args.before: |
| before = to_timestamp(args.before) |
| xfers = (e for e in xfers if e.timestamp < before) |
| if args.longer_than: |
| minimum = to_duration(args.longer_than) |
| xfers = (e for e in xfers if e.duration > minimum) |
| if args.address is not None: |
| xfers = (e for e in xfers if e.address == args.address) |
| if args.ucd90320 or args.pmbus: |
| if args.ucd90320: |
| style = ucd90320command_style |
| else: |
| style = pmbuscommand_style |
| for xfer in as_smbustransfers(xfers, style): |
| if args.bad_transfers and xfer.valid(): |
| continue |
| print(xfer) |
| else: |
| for xfer in xfers: |
| timestamp = xfer.timestamp.strftime("%M:%S.%f") |
| duration = xfer.duration.total_seconds() |
| data = "[ " + " ".join("{:02x}".format(v) for v in xfer.data.data) + " ]" |
| res = xfer.data.response.name |
| fmt = "{0} {1:.6f} 0x{2.address:x} {2.record.name} {3} {4}" |
| print(fmt.format(timestamp, duration, xfer, data, res)) |
| |
| if __name__ == "__main__": |
| main() |