gpu-compute: Read dispatch packet with timing DMA

This fixes occasional readBlob fatals caused by the functional read of
system memory, seen often with the KVM CPU.

Change-Id: Ifccee666f62faa5b2fcf0a64a9d77c8cf95b3add

src/gpu-compute/gpu_command_processor.hh

@@ -99,6 +99,8 @@ class GPUCommandProcessor : public DmaVirtDevice
                          Addr host_pkt_addr);
     void attachDriver(GPUComputeDriver *driver);
 
+    void dispatchKernelObject(AMDKernelCode *akc, void *raw_pkt,
+                              uint32_t queue_id, Addr host_pkt_addr);
     void dispatchPkt(HSAQueueEntry *task);
     void signalWakeupEvent(uint32_t event_id);
 
@@ -149,6 +151,9 @@ class GPUCommandProcessor : public DmaVirtDevice
     HSAPacketProcessor *hsaPP;
     TranslationGenPtr translate(Addr vaddr, Addr size) override;
 
+    // Running counter of dispatched tasks
+    int dynamic_task_id = 0;
+
     // Keep track of start times for task dispatches.
     std::unordered_map<Addr, Tick> dispatchStartTime;