src/dev/pciconfigall.hh

   1 /*
   2  * Copyright (c) 2004-2005 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  * Authors: Andrew Schultz
  29  *          Ali Saidi
  30  */
  31
  32 /*
  33  * @file
  34  * PCI Config space implementation.
  35  */
  36
  37 #ifndef __PCICONFIGALL_HH__
  38 #define __PCICONFIGALL_HH__
  39
  40 #include "base/range.hh"
  41 #include "dev/io_device.hh"
  42 #include "dev/pcireg.h"
  43 #include "params/PciConfigAll.hh"
  44
  45 /**
  46  * PCI Config Space
  47  * All of PCI config space needs to return -1 on Tsunami, except
  48  * the devices that exist. This device maps the entire bus config
  49  * space and passes the requests on to TsunamiPCIDev devices as
  50  * appropriate.
  51  */
  52 class PciConfigAll : public PioDevice
  53 {
  54   public:
  55     typedef PciConfigAllParams Params;
  56     const Params *params() const { return (const Params *)_params; }
  57
  58     /**
  59      * Constructor for PCIConfigAll
  60      * @param p parameters structure
  61      */
  62     PciConfigAll(const Params *p);
  63
  64     /**
  65      * Read something in PCI config space. If the device does not exist
  66      * -1 is returned, if the device does exist its PciDev::ReadConfig (or the
  67      * virtual function that overrides) it is called.
  68      * @param pkt Contains information about the read operation
  69      * @return Amount of time to do the read
  70      */
  71     virtual Tick read(PacketPtr pkt);
  72
  73     /**
  74      * Write to PCI config spcae. If the device does not exit the simulator
  75      * panics. If it does it is passed on the PciDev::WriteConfig (or the virtual
  76      * function that overrides it).
  77      * @param pkt Contains information about the write operation
  78      * @return Amount of time to do the read
  79      */
  80
  81     virtual Tick write(PacketPtr pkt);
  82
  83     AddrRangeList getAddrRanges() const;
  84
  85   private:
  86     Addr pioAddr;
  87
  88 };
  89
  90 #endif // __PCICONFIGALL_HH__