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+/*
+ * Copyright (c) 2004-2005 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: Ali Saidi
+ */
+
+/** @file
+ * Emulation of the Tsunami CChip CSRs
+ */
+
+#ifndef __TSUNAMI_CCHIP_HH__
+#define __TSUNAMI_CCHIP_HH__
+
+#include "dev/alpha/tsunami.hh"
+#include "base/range.hh"
+#include "dev/io_device.hh"
+
+
+/**
+ * Tsunami CChip CSR Emulation. This device includes all the interrupt
+ * handling code for the chipset.
+ */
+class TsunamiCChip : public BasicPioDevice
+{
+ protected:
+ /**
+ * pointer to the tsunami object.
+ * This is our access to all the other tsunami
+ * devices.
+ */
+ Tsunami *tsunami;
+
+ /**
+ * The dims are device interrupt mask registers.
+ * One exists for each CPU, the DRIR X DIM = DIR
+ */
+ uint64_t dim[Tsunami::Max_CPUs];
+
+ /**
+ * The dirs are device interrupt registers.
+ * One exists for each CPU, the DRIR X DIM = DIR
+ */
+ uint64_t dir[Tsunami::Max_CPUs];
+
+ /**
+ * This register contains bits for each PCI interrupt
+ * that can occur.
+ */
+ uint64_t drir;
+
+ /** Indicator of which CPUs have an IPI interrupt */
+ uint64_t ipint;
+
+ /** Indicator of which CPUs have an RTC interrupt */
+ uint64_t itint;
+
+ public:
+ struct Params : public BasicPioDevice::Params
+ {
+ Tsunami *tsunami;
+ };
+ protected:
+ const Params *params() const {return (const Params *)_params; }
+
+ public:
+ /**
+ * Initialize the Tsunami CChip by setting all of the
+ * device register to 0.
+ * @param p params struct
+ */
+ TsunamiCChip(Params *p);
+
+ virtual Tick read(PacketPtr pkt);
+
+ virtual Tick write(PacketPtr pkt);
+
+ /**
+ * post an RTC interrupt to the CPU
+ */
+ void postRTC();
+
+ /**
+ * post an interrupt to the CPU.
+ * @param interrupt the interrupt number to post (0-64)
+ */
+ void postDRIR(uint32_t interrupt);
+
+ /**
+ * clear an interrupt previously posted to the CPU.
+ * @param interrupt the interrupt number to post (0-64)
+ */
+ void clearDRIR(uint32_t interrupt);
+
+ /**
+ * post an ipi interrupt to the CPU.
+ * @param ipintr the cpu number to clear(bitvector)
+ */
+ void clearIPI(uint64_t ipintr);
+
+ /**
+ * clear a timer interrupt previously posted to the CPU.
+ * @param itintr the cpu number to clear(bitvector)
+ */
+ void clearITI(uint64_t itintr);
+
+ /**
+ * request an interrupt be posted to the CPU.
+ * @param ipreq the cpu number to interrupt(bitvector)
+ */
+ void reqIPI(uint64_t ipreq);
+
+
+ /**
+ * Serialize this object to the given output stream.
+ * @param os The stream to serialize to.
+ */
+ virtual void serialize(std::ostream &os);
+
+ /**
+ * Reconstruct the state of this object from a checkpoint.
+ * @param cp The checkpoint use.
+ * @param section The section name of this object
+ */
+ virtual void unserialize(Checkpoint *cp, const std::string &section);
+
+};
+
+#endif // __TSUNAMI_CCHIP_HH__