components_library/boards/test_board.py

# Copyright (c) 2021 The Regents of the University of California
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from m5.objects import SrcClockDomain, ClockDomain, VoltageDomain, Port, IOXBar

from .mem_mode import MemMode, mem_mode_to_string
from ..utils.override import overrides
from .abstract_board import AbstractBoard
from ..processors.abstract_processor import AbstractProcessor
from ..memory.abstract_memory_system import AbstractMemorySystem
from ..cachehierarchies.abstract_cache_hierarchy import AbstractCacheHierarchy


from typing import List


class TestBoard(AbstractBoard):

    """This is a Testing Board used to run traffic generators on a simple
    architecture.

    To work as a traffic generator board, pass a generator as a processor.
    """

    def __init__(
        self,
        clk_freq: str,
        processor: AbstractProcessor,
        memory: AbstractMemorySystem,
        cache_hierarchy: AbstractCacheHierarchy,
    ):
        super(TestBoard, self).__init__(
            processor=processor,
            memory=memory,
            cache_hierarchy=cache_hierarchy,
        )
        self.clk_domain = SrcClockDomain(
            clock=clk_freq, voltage_domain=VoltageDomain()
        )

        self.mem_ranges = memory.get_memory_ranges()

    def connect_system_port(self, port: Port) -> None:
        self.system_port = port

    def connect_things(self) -> None:
        self.get_cache_hierarchy().incorporate_cache(self)

        self.get_processor().incorporate_processor(self)

        self.get_memory().incorporate_memory(self)

    def get_clock_domain(self) -> ClockDomain:
        return self.clk_domain

    @overrides(AbstractBoard)
    def has_io_bus(self) -> bool:
        return False

    @overrides(AbstractBoard)
    def get_io_bus(self) -> IOXBar:
        raise NotImplementedError(
            "The TestBoard does not have an IO Bus. "
            "Use `has_io_bus()` to check this."
        )

    @overrides(AbstractBoard)
    def get_dma_ports(self) -> List[Port]:
        return False

    @overrides(AbstractBoard)
    def get_dma_ports(self) -> List[Port]:
        raise NotImplementedError(
            "The TestBoard does not have DMA Ports. "
            "Use `has_dma_ports()` to check this."
        )

    @overrides(AbstractBoard)
    def set_mem_mode(self, mem_mode: MemMode) -> None:
        self.mem_mode = mem_mode_to_string(mem_mode=mem_mode)