1 # Copyright 2019 Google, Inc.
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4 # modification, are permitted provided that the following conditions are
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12 # this software without specific prior written permission.
14 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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24 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 from m5
.params
import Port
, VectorPort
28 INT_SOURCE_ROLE
= 'Int Source Pin'
29 INT_SINK_ROLE
= 'Int Sink Pin'
30 Port
.compat(INT_SOURCE_ROLE
, INT_SINK_ROLE
)
32 # A source pin generally represents a single pin which might connect to
34 class IntSourcePin(VectorPort
):
35 def __init__(self
, desc
):
36 super(IntSourcePin
, self
).__init
__(
37 INT_SOURCE_ROLE
, desc
, is_source
=True)
39 # Each "physical" pin can be driven by a single source pin since there are no
40 # provisions for resolving competing signals running to the same pin.
41 class IntSinkPin(Port
):
42 def __init__(self
, desc
):
43 super(IntSinkPin
, self
).__init
__(INT_SINK_ROLE
, desc
)
45 # A vector of sink pins represents a bank of physical pins. For instance, an
46 # interrupt controller with many numbered input interrupts could represent them
47 # as a VectorIntSinkPin.
48 class VectorIntSinkPin(VectorPort
):
49 def __init__(self
, desc
):
50 super(VectorIntSinkPin
, self
).__init
__(INT_SINK_ROLE
, desc
)