src/soc/memory_pipe_experiment/config.py

   1 class MemoryPipeConfig:
   2     def __init__(self, *,
   3                  bytes_per_cache_line=32,
   4                  l1_way_count=8,
   5                  l1_set_count=64,
   6                  fu_op_id_shape=range(32),
   7                  fu_op_id_nop_value=0,
   8                  physical_address_bits=48,
   9                  memory_queue_chunk_size=4,
  10                  memory_queue_entry_count=8):
  11         self.bytes_per_cache_line = bytes_per_cache_line
  12         self.l1_way_count = l1_way_count
  13         self.l1_set_count = l1_set_count
  14         self.fu_op_id_shape = fu_op_id_shape
  15         self.fu_op_id_nop_value = fu_op_id_nop_value
  16         self.physical_address_bits = physical_address_bits
  17         self.memory_queue_chunk_size = memory_queue_chunk_size
  18         self.memory_queue_entry_count = memory_queue_entry_count
  19
  20     def memory_queue_chunk_entries_start_index(self, chunk_index):
  21         """ entry index of the first memory queue entry in the chunk `chunk_index`. """
  22         return self.memory_queue_chunk_size * chunk_index
  23
  24     def memory_queue_entry_index(self, chunk_index, index_in_chunk):
  25         return self.memory_queue_chunk_size * chunk_index + index_in_chunk
  26
  27     def memory_queue_chunk_entries_end_index(self, chunk_index):
  28         """ one past the end entry index for in the chunk `chunk_index`. """
  29         v = self.memory_queue_chunk_size * (chunk_index + 1)
  30         return min(v, self.memory_queue_entry_count)
  31
  32     @property
  33     def l1_line_count(self):
  34         return self.l1_way_count * self.l1_set_count
  35
  36     @property
  37     def l1_byte_count(self):
  38         return self.l1_line_count * self.bytes_per_cache_line
  39
  40     @property
  41     def bits_per_cache_line(self):
  42         return 8 * self.bytes_per_cache_line
  43
  44     @property
  45     def memory_queue_chunk_count(self):
  46         return self.memory_queue_entry_count // self.memory_queue_chunk_size