X86: Make APICs communicate through the memory system.

1 files changed, 84 insertions, 0 deletions

diff --git a/src/arch/x86/intmessage.hh b/src/arch/x86/intmessage.hh
new file mode 100644
index 000000000..64e821a41
--- /dev/null
+++ b/src/arch/x86/intmessage.hh
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2008 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef __ARCH_X86_INTMESSAGE_HH__
+#define __ARCH_X86_INTMESSAGE_HH__
+
+#include "arch/x86/x86_traits.hh"
+#include "base/bitunion.hh"
+#include "mem/packet.hh"
+#include "mem/request.hh"
+#include "sim/host.hh"
+
+namespace X86ISA
+{
+    BitUnion32(TriggerIntMessage)
+        Bitfield<7, 0> destination;
+        Bitfield<15, 8> vector;
+        Bitfield<18, 16> deliveryMode;
+        Bitfield<19> destMode;
+    EndBitUnion(TriggerIntMessage)
+
+    static const Addr TriggerIntOffset = 0;
+
+    static inline PacketPtr
+    prepIntRequest(const uint8_t id, Addr offset, Addr size)
+    {
+        RequestPtr req = new Request(x86InterruptAddress(id, offset),
+                                     size, UNCACHEABLE);
+        PacketPtr pkt = new Packet(req, MemCmd::MessageReq, Packet::Broadcast);
+        pkt->allocate();
+        return pkt;
+    }
+
+    template<class T>
+    PacketPtr
+    buildIntRequest(const uint8_t id, T payload, Addr offset, Addr size)
+    {
+        PacketPtr pkt = prepIntRequest(id, offset, size);
+        pkt->set<T>(payload);
+        return pkt;
+    }
+
+    static inline PacketPtr
+    buildIntRequest(const uint8_t id, TriggerIntMessage payload)
+    {
+        return buildIntRequest(id, payload, TriggerIntOffset,
+                sizeof(TriggerIntMessage));
+    }
+
+    static inline PacketPtr
+    buildIntResponse()
+    {
+        panic("buildIntResponse not implemented.\n");
+    }
+}
+
+#endif