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#!/usr/bin/env python3
#
# Copyright © 2020 Google LLC
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
import argparse
import queue
import re
from serial_buffer import SerialBuffer
import sys
import threading
class CrosServoRun:
def __init__(self, cpu, ec):
# Merged FIFO for the two serial buffers, fed by threads.
self.serial_queue = queue.Queue()
self.sentinel = object()
self.threads_done = 0
self.ec_ser = SerialBuffer(
ec, "results/serial-ec.txt", "R SERIAL-EC> ")
self.cpu_ser = SerialBuffer(
cpu, "results/serial.txt", "R SERIAL-CPU> ")
self.iter_feed_ec = threading.Thread(
target=self.iter_feed_queue, daemon=True, args=(self.ec_ser.lines(),))
self.iter_feed_ec.start()
self.iter_feed_cpu = threading.Thread(
target=self.iter_feed_queue, daemon=True, args=(self.cpu_ser.lines(),))
self.iter_feed_cpu.start()
# Feed lines from our serial queues into the merged queue, marking when our
# input is done.
def iter_feed_queue(self, it):
for i in it:
self.serial_queue.put(i)
self.serial_queue.put(sentinel)
# Return the next line from the queue, counting how many threads have
# terminated and joining when done
def get_serial_queue_line(self):
line = self.serial_queue.get()
if line == self.sentinel:
self.threads_done = self.threads_done + 1
if self.threads_done == 2:
self.iter_feed_cpu.join()
self.iter_feed_ec.join()
return line
# Returns an iterator for getting the next line.
def serial_queue_lines(self):
return iter(self.get_serial_queue_line, self.sentinel)
def ec_write(self, s):
print("W SERIAL-EC> %s" % s)
self.ec_ser.serial.write(s.encode())
def cpu_write(self, s):
print("W SERIAL-CPU> %s" % s)
self.cpu_ser.serial.write(s.encode())
def print_error(self, message):
RED = '\033[0;31m'
NO_COLOR = '\033[0m'
print(RED + message + NO_COLOR)
def run(self):
# Flush any partial commands in the EC's prompt, then ask for a reboot.
self.ec_write("\n")
self.ec_write("reboot\n")
# This is emitted right when the bootloader pauses to check for input.
# Emit a ^N character to request network boot, because we don't have a
# direct-to-netboot firmware on cheza.
for line in self.serial_queue_lines():
if re.search("load_archive: loading locale_en.bin", line):
self.cpu_write("\016")
break
# The Cheza boards have issues with failing to bring up power to
# the system sometimes, possibly dependent on ambient temperature
# in the farm.
if re.search("POWER_GOOD not seen in time", line):
self.print_error("Detected intermittent poweron failure, restarting run...")
return 2
tftp_failures = 0
for line in self.serial_queue_lines():
if re.search("---. end Kernel panic", line):
return 1
# The Cheza firmware seems to occasionally get stuck looping in
# this error state during TFTP booting, possibly based on amount of
# network traffic around it, but it'll usually recover after a
# reboot.
if re.search("R8152: Bulk read error 0xffffffbf", line):
tftp_failures += 1
if tftp_failures >= 100:
self.print_error("Detected intermittent tftp failure, restarting run...")
return 2
# There are very infrequent bus errors during power management transitions
# on cheza, which we don't expect to be the case on future boards.
if re.search("Kernel panic - not syncing: Asynchronous SError Interrupt", line):
self.print_error("Detected cheza power management bus error, restarting run...")
return 2
# These HFI response errors started appearing with the introduction
# of piglit runs. CosmicPenguin says:
#
# "message ID 106 isn't a thing, so likely what happened is that we
# got confused when parsing the HFI queue. If it happened on only
# one run, then memory corruption could be a possible clue"
#
# Given that it seems to trigger randomly near a GPU fault and then
# break many tests after that, just restart the whole run.
if re.search("a6xx_hfi_send_msg.*Unexpected message id .* on the response queue", line):
self.print_error("Detected cheza power management bus error, restarting run...")
return 2
result = re.search("bare-metal result: (\S*)", line)
if result:
if result.group(1) == "pass":
return 0
else:
return 1
self.print_error("Reached the end of the CPU serial log without finding a result")
return 1
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--cpu', type=str,
help='CPU Serial device', required=True)
parser.add_argument(
'--ec', type=str, help='EC Serial device', required=True)
args = parser.parse_args()
servo = CrosServoRun(args.cpu, args.ec)
while True:
retval = servo.run()
if retval != 2:
break
# power down the CPU on the device
servo.ec_write("power off\n")
sys.exit(retval)
if __name__ == '__main__':
main()
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