def trace(self, queue, follow):
while True:
trace_idx = firmware_to_host_addr(self.trace_hdr.trace_idx)
trace_offset = trace_idx - self.trace_buf_offset
if self.last_trace_idx is None:
last_trace_offset = trace_offset
elif trace_idx != self.last_trace_idx:
last_trace_offset = self.last_trace_idx - self.trace_buf_offset
else:
sleep(.1)
continue
buffer = ""
if trace_offset > last_trace_offset:
trace_buf = self.get_trace_buf(
last_trace_offset, trace_offset - last_trace_offset)
for byte in trace_buf:
buffer += chr(byte)
else:
# Circular buffer has rolled over
trace_buf = self.get_trace_buf(
last_trace_offset, self.trace_buf_size - last_trace_offset)
for byte in trace_buf:
buffer += chr(byte)
trace_buf = self.get_trace_buf(0, trace_offset)
for byte in trace_buf:
buffer += chr(byte)
try:
queue.put(buffer)
except EOFError:
# Not sure why, but sometimes get an EOFError exception. Doesn't seem to cause any harm, so ignoring.
pass
if not follow:
break
self.last_trace_idx = trace_idx
def get_history(self, queue, follow):
while True:
hwrm_history_list = self.hwrm_history_list
ptr_addr = firmware_to_host_addr(hwrm_history_list.ptr_addr)
max_entries = hwrm_history_list.max_entries
bytes = self.grc.read_bytes(
ptr_addr,
sizeof(HwrmHistEntryStruct) * max_entries)
newest_index = self.get_newest_index(bytes, max_entries)
if newest_index < 0:
sleep(.1)
continue
elif self.last_index is None:
self.last_index = newest_index
elif not follow:
break
elif newest_index == self.last_index:
sleep(.1)
continue
buffer = []
if newest_index > self.last_index:
for i in range(self.last_index + 1, newest_index + 1):
hwrm_entry = HwrmHistEntryStruct.from_buffer(
bytes,
sizeof(HwrmHistEntryStruct) * i)
buffer.append(compact(i, max_entries, hwrm_entry))
else:
# Circular buffer has rolled over
if self.last_index + 1 < max_entries:
for i in range(self.last_index + 1, max_entries):
hwrm_entry = HwrmHistEntryStruct.from_buffer(
bytes,
sizeof(HwrmHistEntryStruct) * i)
buffer.append(compact(i, max_entries, hwrm_entry))
for i in range(0, newest_index + 1):
hwrm_entry = HwrmHistEntryStruct.from_buffer(
bytes,
sizeof(HwrmHistEntryStruct) * i)
buffer.append(compact(i, max_entries, hwrm_entry))
queue.put(buffer)
self.last_index = newest_index
def hwrm_history_offset(self):
return firmware_to_host_addr(self.shmem.hwrm_history_offset)
def shmem_ptr(self):
if not self._shmem_ptr:
self._shmem_ptr = firmware_to_host_addr(
self.grc.read_word(self.shmem_ptr_ptr))
log.debug(f"shmem ptr = 0x{self._shmem_ptr:08x}.")
return self._shmem_ptr
def shmem_ptr_ptr(self):
addr = firmware_to_host_addr(PRIMATE_SHMEM_OFFSET_LOCATION)
log.debug(f"does this work?")
log.debug(f"shmem ptr addr = 0x{addr:08x}.")
return addr
def trace_hdr_offset(self):
return firmware_to_host_addr(self.shmem.trace_buf_offset)