From 0f6d9fea875fcf2772a0baba070dedfa4b2cc057 Mon Sep 17 00:00:00 2001
From: foreman <dl.constructicon@amd.com>
Date: Tue, 27 Mar 2018 15:17:14 -0400
Subject: [PATCH] P4 to Git Change 1533139 by todli@todli-win-opencl-kv1 on
 2018/03/27 15:01:15

	SWDEV-147368 - Choose proper engine for markerWrite to SDI ExternalPhysical Memory according to last copy engine

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/pal/palvirtual.cpp#80 edit
---
 rocclr/runtime/device/pal/palvirtual.cpp | 33 ++++++++++++++++--------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/rocclr/runtime/device/pal/palvirtual.cpp b/rocclr/runtime/device/pal/palvirtual.cpp
index fd4e3fa67b..dbfa84e012 100644
--- a/rocclr/runtime/device/pal/palvirtual.cpp
+++ b/rocclr/runtime/device/pal/palvirtual.cpp
@@ -2542,29 +2542,40 @@ void VirtualGPU::submitSignal(amd::SignalCommand& vcmd) {
   pal::Memory* pGpuMemory = dev().getGpuMemory(&vcmd.memory());
 
   GpuEvent gpuEvent;
-  eventBegin(MainEngine);
-
   uint32_t value = vcmd.markerValue();
 
-  addVmMemory(pGpuMemory);
   if (vcmd.type() == CL_COMMAND_WAIT_SIGNAL_AMD) {
+    eventBegin(MainEngine);
+    addVmMemory(pGpuMemory);
+
     iCmd()->CmdWaitBusAddressableMemoryMarker(*(pGpuMemory->iMem()), value, 0xFFFFFFFF,
                                               Pal::CompareFunc::GreaterEqual);
+    eventEnd(MainEngine, gpuEvent);
+
   } else if (vcmd.type() == CL_COMMAND_WRITE_SIGNAL_AMD) {
+
+    EngineType activeEngineID = engineID_;
+    engineID_ = static_cast<EngineType>(pGpuMemory->getGpuEvent(*this)->engineId_);
+
     // Make sure GPU finished operation and data reached memory before the marker write
     static constexpr bool FlushL2 = true;
     addBarrier(FlushL2);
-    // \todo: Implement the right changes in PAL
-    // Workarounds: for CP overfetch issues and the lack of SDMA sync
+    // Workarounds: We had systems where an extra delay was necessary.
     {
-      // Flush CB associated with the DGMA buffer
-      isDone(pGpuMemory->getGpuEvent(*this));
-      // Make sure SDMA is done on the DGMA buffer
-      pGpuMemory->wait(*this, true);
+        // Flush CB associated with the DGMA buffer
+        isDone(pGpuMemory->getGpuEvent(*this));
     }
-    iCmd()->CmdUpdateBusAddressableMemoryMarker(*(pGpuMemory->iMem()), value);
+
+    eventBegin(engineID_);
+    queues_[engineID_]->addCmdMemRef(pGpuMemory->memRef());
+
+    queues_[engineID_]->iCmd()->
+        CmdUpdateBusAddressableMemoryMarker(*(pGpuMemory->iMem()), value);
+    eventEnd(engineID_, gpuEvent);
+
+    // Restore the original engine
+    engineID_ = activeEngineID;
   }
-  eventEnd(MainEngine, gpuEvent);
 
   // Update the global GPU event
   setGpuEvent(gpuEvent);