[ipemu] align strb to 8

chipsalliance · Jul 18, 2024 · ec9d62b · ec9d62b
1 parent c602b88
commit ec9d62b
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/ipemu/src/AXI4SlaveAgent.scala b/ipemu/src/AXI4SlaveAgent.scala
@@ -26,7 +26,8 @@ class AXI4SlaveAgentInterface(parameter: AXI4SlaveAgentParameter) extends Bundle
 
 class WritePayload(length: Int, dataWidth: Int) extends Bundle {
   val data = Vec(length, UInt(dataWidth.W))
-  val strb = Vec(length, UInt((dataWidth / 8).W))
+  // For dataWidth <= 8, align strb to u8 for a simple C-API
+  val strb = Vec(length, UInt(math.max(8, dataWidth / 8).W))
 }
 
 class ReadPayload(length: Int,dataWidth: Int) extends Bundle {
@@ -98,7 +99,7 @@ class AXI4SlaveAgent(parameter: AXI4SlaveAgentParameter)
       when(channel.WVALID && channel.WREADY) {
         busy := true.B
         writePayload.data(writeIdx) := channel.WDATA
-        writePayload.strb(writeIdx) := channel.WSTRB
+        writePayload.strb(writeIdx) := channel.WSTRB.pad(writePayload.strb.getWidth)
         writeIdx := writeIdx + 1.U
         when(channel.WLAST) {
           last := true.B