[gem5-dev] Change in gem5/gem5[develop]: cpu: Add a sendFunctional function to the ThreadContext.

[Gabe Black (Gerrit) via gem5-dev]

Gabe Black has uploaded this change for review. (  
https://gem5-review.googlesource.com/c/public/gem5/+/45861 )

Change subject: cpu: Add a sendFunctional function to the ThreadContext.
......................................................................

cpu: Add a sendFunctional function to the ThreadContext.

This can be used to send a functional packet from the perspective of a
thread context. Currently this will not consider targets within the CPU
like the local APIC on x86. The default implementation sends a packet
using the port on the way out of the CPU.

Change-Id: Idb311e156a416ad51b585794c1e9fa75711d61f1
---
M src/cpu/thread_context.cc
M src/cpu/thread_context.hh
2 files changed, 14 insertions(+), 0 deletions(-)



diff --git a/src/cpu/thread_context.cc b/src/cpu/thread_context.cc
index 1a78693..00afe7c 100644
--- a/src/cpu/thread_context.cc
+++ b/src/cpu/thread_context.cc
@@ -48,6 +48,7 @@
 #include "cpu/base.hh"
 #include "debug/Context.hh"
 #include "debug/Quiesce.hh"
+#include "mem/port.hh"
 #include "params/BaseCPU.hh"
 #include "sim/full_system.hh"

@@ -128,6 +129,15 @@
 }

 void
+ThreadContext::sendFunctional(PacketPtr pkt)
+{
+    const auto *port =
+        dynamic_cast<const RequestPort *>(&getCpuPtr()->getDataPort());
+    assert(port);
+    port->sendFunctional(pkt);
+}
+
+void
 ThreadContext::quiesce()
 {
     getSystemPtr()->threads.quiesce(contextId());
diff --git a/src/cpu/thread_context.hh b/src/cpu/thread_context.hh
index 145be58..921135c 100644
--- a/src/cpu/thread_context.hh
+++ b/src/cpu/thread_context.hh
@@ -68,6 +68,8 @@
 class PortProxy;
 class Process;
 class System;
+class Packet;
+using PacketPtr = Packet *;

 /**
  * ThreadContext is the external interface to all thread state for
@@ -146,6 +148,8 @@

     virtual PortProxy &getVirtProxy() = 0;

+    virtual void sendFunctional(PacketPtr pkt);
+
     /**
      * Initialise the physical and virtual port proxies and tie them to
      * the data port of the CPU.

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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Idb311e156a416ad51b585794c1e9fa75711d61f1
Gerrit-Change-Number: 45861
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <gabe.bl...@gmail.com>
Gerrit-MessageType: newchange
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