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authorAli Saidi <Ali.Saidi@ARM.com>2011-05-04 20:38:27 -0500
committerAli Saidi <Ali.Saidi@ARM.com>2011-05-04 20:38:27 -0500
commit5f73d4ac9741f58fd00ccd03eac92c0c60817658 (patch)
treee9cf90cd9f490b38090a85e0628ff79d51b971eb /src/dev/arm/a9scu.hh
parentafd08879d726dbbefa3ff6018088cd6d89b53bbb (diff)
downloadgem5-5f73d4ac9741f58fd00ccd03eac92c0c60817658.tar.xz
ARM: Add snoop control unit device.
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+/*
+ * Copyright (c) 2010 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * 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: Ali Saidi
+ */
+
+#ifndef __DEV_ARM_A9SCU_HH__
+#define __DEV_ARM_A9SCU_HH__
+
+#include "base/range.hh"
+#include "dev/io_device.hh"
+#include "params/A9SCU.hh"
+
+/** @file
+ * This defines the snoop control unit register on an A9
+ */
+
+class A9SCU : public BasicPioDevice
+{
+ protected:
+ enum {
+ Control = 0x00,
+ Config = 0x04,
+ };
+
+ public:
+ typedef A9SCUParams Params;
+
+ /**
+ * The constructor for RealView just registers itself with the MMU.
+ * @param p params structure
+ */
+ A9SCU(Params *p);
+
+ /**
+ * Handle a read to the device
+ * @param pkt The memory request.
+ * @param data Where to put the data.
+ */
+ virtual Tick read(PacketPtr pkt);
+
+ /**
+ * All writes are panic.
+ * @param pkt The memory request.
+ * @param data the data
+ */
+ virtual Tick write(PacketPtr pkt);
+};
+
+
+#endif // __DEV_ARM_A9SCU_HH__
+