From 40422ee3d3c6a9bc081fd788b3a04b4817393899 Mon Sep 17 00:00:00 2001
From: "Tommaso Marinelli (imec)" <Tommaso.Marinelli@imec.be>
Date: Fri, 11 Oct 2024 16:24:27 +0200
Subject: [PATCH] Fix LPDDR5 open row incorrect detection

LPDDR5 execution hangs indefinitely (or triggers refresh watchdog)
because it does not check for the correct row state, generating
an infinite sequence of precharge commands. This commit fixes this
behavior by using the correct row index.

Fixes issue #58.
---
 src/dram/impl/LPDDR5.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/dram/impl/LPDDR5.cpp b/src/dram/impl/LPDDR5.cpp
index 78de3de..bc0d8a0 100644
--- a/src/dram/impl/LPDDR5.cpp
+++ b/src/dram/impl/LPDDR5.cpp
@@ -460,7 +460,7 @@ class LPDDR5 : public IDRAM, public Implementation {
           case m_states["Closed"]: return m_commands["ACT-1"];
           case m_states["Pre-Opened"]: return m_commands["ACT-2"];
           case m_states["Opened"]: {
-            if (node->m_row_state.find(0) != node->m_row_state.end()) {
+            if (node->m_row_state.find(addr_vec[m_levels["row"]]) != node->m_row_state.end()) {
               Node* rank = node->m_parent_node->m_parent_node;
               if (rank->m_final_synced_cycle < clk) {
                 return m_commands["CASRD"];
@@ -482,7 +482,7 @@ class LPDDR5 : public IDRAM, public Implementation {
           case m_states["Closed"]: return m_commands["ACT-1"];
           case m_states["Pre-Opened"]: return m_commands["ACT-2"];
           case m_states["Opened"]: {
-            if (node->m_row_state.find(0) != node->m_row_state.end()) {
+            if (node->m_row_state.find(addr_vec[m_levels["row"]]) != node->m_row_state.end()) {
               Node* rank = node->m_parent_node->m_parent_node;
               if (rank->m_final_synced_cycle < clk) {
                 return m_commands["CASWR"];