tsunami_pchip.hh revision 2861
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: Ali Saidi 29 */ 30 31/** @file 32 * Tsunami PCI interface CSRs 33 */ 34 35#ifndef __TSUNAMI_PCHIP_HH__ 36#define __TSUNAMI_PCHIP_HH__ 37 38#include "dev/tsunami.hh" 39#include "base/range.hh" 40#include "dev/io_device.hh" 41 42/** 43 * A very simple implementation of the Tsunami PCI interface chips. 44 */ 45class TsunamiPChip : public BasicPioDevice 46{ 47 protected: 48 49 static const Addr TsunamiPciBus0Config = ULL(0x801fe000000); 50 51 /** Pchip control register */ 52 uint64_t pctl; 53 54 /** Window Base addresses */ 55 uint64_t wsba[4]; 56 57 /** Window masks */ 58 uint64_t wsm[4]; 59 60 /** Translated Base Addresses */ 61 uint64_t tba[4]; 62 63 public: 64 struct Params : public BasicPioDevice::Params 65 { 66 Tsunami *tsunami; 67 }; 68 protected: 69 const Params *params() const { return (const Params*)_params; } 70 71 public: 72 /** 73 * Register the PChip with the mmu and init all wsba, wsm, and tba to 0 74 * @param p pointer to the parameters struct 75 */ 76 TsunamiPChip(Params *p); 77 78 /** 79 * Translate a PCI bus address to a memory address for DMA. 80 * @todo Andrew says this needs to be fixed. What's wrong with it? 81 * @param busAddr PCI address to translate. 82 * @return memory system address 83 */ 84 Addr translatePciToDma(Addr busAddr); 85 86 Addr calcConfigAddr(int bus, int dev, int func); 87 88 virtual Tick read(Packet *pkt); 89 virtual Tick write(Packet *pkt); 90 91 /** 92 * Serialize this object to the given output stream. 93 * @param os The stream to serialize to. 94 */ 95 virtual void serialize(std::ostream &os); 96 97 /** 98 * Reconstruct the state of this object from a checkpoint. 99 * @param cp The checkpoint use. 100 * @param section The section name of this object 101 */ 102 virtual void unserialize(Checkpoint *cp, const std::string §ion); 103}; 104 105#endif // __TSUNAMI_PCHIP_HH__ 106