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Fix UpConverter reversed write mask 

Signed-off-by: Andrew Butt <andrewb1999@gmail.com>
This commit is contained in:
Andrew Butt 2021-04-27 02:08:31 -04:00
parent 886f60d32c
commit b4a2b7f9b0
1 changed files with 11 additions and 4 deletions
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7
litedram/frontend/adapter.py
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@ -309,10 +309,17 @@ class LiteDRAMNativePortUpConverter(Module):
# Replicate `sel` bits to match the width of port_to.wdata.we. # Replicate `sel` bits to match the width of port_to.wdata.we.
wdata_sel = Signal.like(port_to.wdata.we) wdata_sel = Signal.like(port_to.wdata.we)
if reverse:
wdata_sel_parts = [
Replicate(cmd_buffer.source.sel[i], port_to.wdata.we.nbits // sel.nbits)
for i in reverse(range(ratio))
]
else:
wdata_sel_parts = [ wdata_sel_parts = [
Replicate(cmd_buffer.source.sel[i], port_to.wdata.we.nbits // sel.nbits) Replicate(cmd_buffer.source.sel[i], port_to.wdata.we.nbits // sel.nbits)
for i in range(ratio) for i in range(ratio)
] ]
self.sync += \ self.sync += \
If(cmd_buffer.source.valid & cmd_buffer.source.we & wdata_chunk[ratio - 1], If(cmd_buffer.source.valid & cmd_buffer.source.we & wdata_chunk[ratio - 1],
wdata_sel.eq(Cat(wdata_sel_parts)) wdata_sel.eq(Cat(wdata_sel_parts))