litex/migen/bus/transactions.py

from migen.fhdl.std import *


class Transaction:
    def __init__(self, address, data=0, sel=None, busname=None):
        self.address = address
        self.data = data
        if sel is None:
            bytes = (bits_for(data) + 7)//8
            sel = 2**bytes - 1
        self.sel = sel
        self.busname = busname
        self.latency = 0

    def __str__(self):
        return "<" + self.__class__.__name__ + " adr:" + hex(self.address) + " dat:" + hex(self.data) + ">"


class TRead(Transaction):
    pass


class TWrite(Transaction):
    pass