Update phase dispatcher

cpp/shared_initiator/phase_executor.cpp

@@ -107,7 +107,8 @@ bool PhaseExecutor::Dispatch(scsi_command cmd, span<uint8_t> cdb, span<uint8_t>
         break;
 
     default:
-        throw phase_exception(string("Ignoring ") + Bus::GetPhaseName(phase) + " phase");
+        spdlog::error(string("Ignoring ") + Bus::GetPhaseName(phase) + " phase");
+        return false;
     }
 
     return true;
@@ -198,24 +199,25 @@ void PhaseExecutor::Status()
     array<uint8_t, 1> buf;
 
     if (bus.ReceiveHandShake(buf.data(), 1) != static_cast<int>(buf.size())) {
-        throw phase_exception("STATUS phase failed");
+        spdlog::error("STATUS phase failed");
+    }
+    else {
+        status = buf[0];
     }
-
-    status = buf[0];
 }
 
 void PhaseExecutor::DataIn(span<uint8_t> buffer, int length)
 {
     byte_count = bus.ReceiveHandShake(buffer.data(), length);
     if (!byte_count) {
-        throw phase_exception("DATA IN phase failed");
+        spdlog::error("DATA IN phase failed");
     }
 }
 
 void PhaseExecutor::DataOut(span<uint8_t> buffer, int length)
 {
     if (bus.SendHandShake(buffer.data(), length) != length) {
-        throw phase_exception("DATA OUT phase failed");
+        spdlog::error("DATA OUT phase failed");
     }
 }
 
@@ -224,10 +226,9 @@ void PhaseExecutor::MsgIn()
     array<uint8_t, 1> buf = { };
 
     if (bus.ReceiveHandShake(buf.data(), buf.size()) != buf.size()) {
-        throw phase_exception("MESSAGE IN phase failed");
+        spdlog::error("MESSAGE IN phase failed");
     }
-
-    if (buf[0]) {
+    else if (buf[0]) {
         spdlog::warn(
             fmt::format("MESSAGE IN did not report COMMAND COMPLETE, rejecting unsupported message ${:02x}", buf[0]));
 
@@ -249,7 +250,7 @@ void PhaseExecutor::MsgOut()
     reject = false;
 
     if (bus.SendHandShake(buf.data(), buf.size()) != buf.size()) {
-        throw phase_exception("MESSAGE OUT phase for IDENTIFY failed");
+        spdlog::error("MESSAGE OUT phase for IDENTIFY failed");
     }
 }