dev/pciconfigall.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 /*
  30  * @todo
  31  * Should derive Tsunami from common platform class so PCI will work with
  32  * multiple platforms
  33  *
  34  * @file
  35  * PCI Config space implementation.
  36  */
  37
  38 #ifndef __PCICONFIGALL_HH__
  39 #define __PCICONFIGALL_HH__
  40
  41 #include "mem/functional_mem/functional_memory.hh"
  42 #include "dev/tsunami.hh"
  43 #include "dev/pcireg.h"
  44
  45 #define MAX_PCI_DEV     32
  46 #define MAX_PCI_FUNC    8
  47
  48 class PciDev;
  49
  50 /**
  51  * PCI Config Space
  52  * All of PCI config space needs to return -1 on Tsunami, except
  53  * the devices that exist. This device maps the entire bus config
  54  * space and passes the requests on to TsunamiPCIDev devices as
  55  * appropriate.
  56  */
  57 class PciConfigAll : public FunctionalMemory
  58 {
  59   private:
  60     Addr addr;
  61     static const Addr size = 0xffffff;
  62
  63   protected:
  64
  65     /**
  66       * Pointer to the Tsunmi Object so we can communicate
  67       * to other Tsunami devices in need be.
  68       * @todo Make this more generic for multiple platforms
  69       */
  70     Tsunami *tsunami;
  71
  72   public:
  73     /**
  74       * Pointers to all the devices that are registered with this
  75       * particular config space.
  76       */
  77     PciDev* devices[MAX_PCI_DEV][MAX_PCI_FUNC];
  78
  79     /**
  80       * The default constructor.
  81       */
  82     PciConfigAll(const std::string &name, Tsunami *t, Addr a,
  83                  MemoryController *mmu);
  84
  85     virtual Fault read(MemReqPtr &req, uint8_t *data);
  86     virtual Fault write(MemReqPtr &req, const uint8_t *data);
  87
  88     virtual void serialize(std::ostream &os);
  89     virtual void unserialize(Checkpoint *cp, const std::string &section);
  90
  91 };
  92
  93 #endif // __PCICONFIGALL_HH__