bslathi19/PeakRDL-BusDecoder
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fanout/fainin wip

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This commit is contained in:
Arnav Sacheti
2025-10-20 07:15:47 -07:00
parent e210167f2e
commit f956232a62
9 changed files with 147 additions and 132 deletions
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33
src/peakrdl_busdecoder/cpuif/apb3/apb3_cpuif.py
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@@ -1,5 +1,6 @@
from systemrdl.node import AddressableNode
from ...utils import get_indexed_path
from ..base_cpuif import BaseCpuif
@@ -26,20 +27,32 @@ class APB3Cpuif(BaseCpuif):
self,
signal: str,
node: AddressableNode | None = None,
idx: str | int | None = None,
) -> str:
if node is None:
# Node is none, so this is a slave signal
return f"s_apb.{signal}"
# Master signal
base = f"m_apb_{node.inst_name}"
if not node.is_array:
return f"{base}.{signal}"
if node.current_idx is not None:
# This is a specific instance of an array
return f"{base}_{'_'.join(map(str, node.current_idx))}.{signal}"
if idx is not None:
return f"{base}[{idx}].{signal}"
return f"m_apb_{node.inst_name}.{signal}"
raise ValueError("Must provide an index for arrayed interface signals")
def fanout(self, node: AddressableNode, idx: str | None = None) -> str:
fanout: dict[str, str] = {}
fanout[self.signal("PSEL", node, idx)] = (
f"cpuif_wr_sel.{get_indexed_path(self.exp.ds.top_node, node)}|cpuif_rd_sel.{get_indexed_path(self.exp.ds.top_node, node)}"
)
fanout[self.signal("PSEL", node, idx)] = self.signal("PSEL")
fanout[self.signal("PWRITE", node, idx)] = (
f"cpuif_wr_sel.{get_indexed_path(self.exp.ds.top_node, node)}"
)
fanout[self.signal("PADDR", node, idx)] = self.signal("PADDR")
fanout[self.signal("PWDATA", node, idx)] = "cpuif_wr_data"
return "\n".join(map(lambda kv: f"assign {kv[0]} = {kv[1]};", fanout.items()))
def fanin(self, node: AddressableNode, idx: str | None = None) -> str:
fanin: dict[str, str] = {}
fanin["cpuif_rd_data"] = self.signal("PRDATA", node, idx)
fanin["cpuif_rd_ack"] = self.signal("PREADY", node, idx)
fanin["cpuif_rd_err"] = self.signal("PSLVERR", node, idx)
return "\n".join(map(lambda kv: f"{kv[0]} = {kv[1]};", fanin.items()))