tsunami_pchip.hh revision 4762
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 "base/range.hh" 39#include "dev/alpha/tsunami.hh" 40#include "dev/io_device.hh" 41#include "params/TsunamiPChip.hh" 42 43/** 44 * A very simple implementation of the Tsunami PCI interface chips. 45 */ 46class TsunamiPChip : public BasicPioDevice 47{ 48 protected: 49 50 static const Addr TsunamiPciBus0Config = ULL(0x801fe000000); 51 52 /** Pchip control register */ 53 uint64_t pctl; 54 55 /** Window Base addresses */ 56 uint64_t wsba[4]; 57 58 /** Window masks */ 59 uint64_t wsm[4]; 60 61 /** Translated Base Addresses */ 62 uint64_t tba[4]; 63 64 public: 65 typedef TsunamiPChipParams Params; 66 /** 67 * Register the PChip with the mmu and init all wsba, wsm, and tba to 0 68 * @param p pointer to the parameters struct 69 */ 70 TsunamiPChip(const Params *p); 71 72 const Params * 73 params() const 74 { 75 return dynamic_cast<const Params *>(_params); 76 } 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(PacketPtr pkt); 89 virtual Tick write(PacketPtr 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