dev/tsunami_cchip.hh

   1 /*
   2  * Copyright (c) 2003 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /* @file
  30  * Emulation of the Tsunami CChip CSRs
  31  */
  32
  33 #ifndef __TSUNAMI_CCHIP_HH__
  34 #define __TSUNAMI_CCHIP_HH__
  35
  36 #include "mem/functional_mem/functional_memory.hh"
  37 #include "dev/tsunami.hh"
  38
  39 /*
  40  * Tsunami CChip
  41  */
  42 class TsunamiCChip : public FunctionalMemory
  43 {
  44   private:
  45     Addr addr;
  46     static const Addr size = 0xfff;
  47
  48   protected:
  49       /**
  50        * pointer to the tsunami object.
  51        * This is our access to all the other tsunami
  52        * devices.
  53        */
  54     Tsunami *tsunami;
  55
  56     /**
  57      * The dims are device interrupt mask registers.
  58      * One exists for each CPU, the DRIR X DIM = DIR
  59      */
  60     uint64_t dim[Tsunami::Max_CPUs];
  61
  62     /**
  63      * The dirs are device interrupt registers.
  64      * One exists for each CPU, the DRIR X DIM = DIR
  65      */
  66     uint64_t dir[Tsunami::Max_CPUs];
  67     bool dirInterrupting[Tsunami::Max_CPUs];
  68
  69     /**
  70      * This register contains bits for each PCI interrupt
  71      * that can occur.
  72      */
  73     uint64_t drir;
  74
  75     uint64_t misc;
  76
  77     uint64_t ipiInterrupting[Tsunami::Max_CPUs];
  78     bool RTCInterrupting[Tsunami::Max_CPUs];
  79
  80   public:
  81     TsunamiCChip(const std::string &name, Tsunami *t, Addr a,
  82                  MemoryController *mmu);
  83
  84     virtual Fault read(MemReqPtr &req, uint8_t *data);
  85     virtual Fault write(MemReqPtr &req, const uint8_t *data);
  86
  87     void postRTC();
  88     void postDRIR(uint32_t interrupt);
  89     void clearDRIR(uint32_t interrupt);
  90
  91     virtual void serialize(std::ostream &os);
  92     virtual void unserialize(Checkpoint *cp, const std::string &section);
  93 };
  94
  95 #endif // __TSUNAMI_CCHIP_HH__