SerialLink.py revision 11185 
1# Copyright (c) 2012-2013 ARM Limited
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13# Copyright (c) 2006-2007 The Regents of The University of Michigan
14# Copyright (c) 2015 The University of Bologna
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39#
40# Authors: Ali Saidi
41#          Andreas Hansson
42#          Erfan Azarkhish
43
44from m5.params import *
45from MemObject import MemObject
46
47# SerialLink is a simple variation of the Bridge class, with the ability to
48# account for the latency of packet serialization.
49
50class SerialLink(MemObject):
51    type = 'SerialLink'
52    cxx_header = "mem/serial_link.hh"
53    slave = SlavePort('Slave port')
54    master = MasterPort('Master port')
55    req_size = Param.Unsigned(16, "The number of requests to buffer")
56    resp_size = Param.Unsigned(16, "The number of responses to buffer")
57    delay = Param.Latency('0ns', "The latency of this serial_link")
58    ranges = VectorParam.AddrRange([AllMemory],
59                            "Address ranges to pass through the serial_link")
60    # Bandwidth of the serial link is determined by the clock domain which the
61    #  link belongs to and the number of lanes:
62    num_lanes = Param.Unsigned(1, "Number of parallel lanes inside the serial"
63        "link. (aka. lane width)")
64