From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 3 Dec 2021 17:38:26 +0000 (+0000)
Subject: in loadstore.py, when an exception is done or if the FSM
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dc09fcb833af181e0d7c8139ff068e48e7890c23;p=soc.git

in loadstore.py, when an exception is done or if the FSM
is done, reset back to idle and indicate "not busy"
---

diff --git a/src/soc/fu/ldst/loadstore.py b/src/soc/fu/ldst/loadstore.py
index 47f34105..f7fedc2c 100644
--- a/src/soc/fu/ldst/loadstore.py
+++ b/src/soc/fu/ldst/loadstore.py
@@ -278,6 +278,11 @@ class LoadStore1(PortInterfaceBase):
             sync += Display("alignment error: store addr in DAR %x", self.addr)
             comb += self.pi.dar_o.eq(self.addr)
 
+        # when done or exception, return to idle state
+        with m.If(self.done | exception):
+            sync += self.state.eq(State.IDLE)
+            comb += self.busy.eq(0)
+
         # happened, alignment, instr_fault, invalid.
         # note that all of these flow through - eventually to the TRAP
         # pipeline, via PowerDecoder2.