isa_fake.cc revision 4986:b7c82ad6b3ef
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 * Isa Fake Device implementation 33 */ 34 35#include "base/trace.hh" 36#include "dev/isa_fake.hh" 37#include "mem/packet.hh" 38#include "mem/packet_access.hh" 39#include "sim/system.hh" 40 41using namespace std; 42 43IsaFake::IsaFake(Params *p) 44 : BasicPioDevice(p) 45{ 46 if (!p->ret_bad_addr) 47 pioSize = p->pio_size; 48 49 retData8 = p->ret_data8; 50 retData16 = p->ret_data16; 51 retData32 = p->ret_data32; 52 retData64 = p->ret_data64; 53} 54 55Tick 56IsaFake::read(PacketPtr pkt) 57{ 58 59 pkt->makeAtomicResponse(); 60 if (params()->warn_access != "") 61 warn("Device %s accessed by read to address %#x size=%d\n", 62 name(), pkt->getAddr(), pkt->getSize()); 63 if (params()->ret_bad_addr) { 64 DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n", 65 pkt->getAddr(), pkt->getSize()); 66 pkt->setBadAddress(); 67 } else { 68 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 69 DPRINTF(Tsunami, "read va=%#x size=%d\n", 70 pkt->getAddr(), pkt->getSize()); 71 switch (pkt->getSize()) { 72 case sizeof(uint64_t): 73 pkt->set(retData64); 74 break; 75 case sizeof(uint32_t): 76 pkt->set(retData32); 77 break; 78 case sizeof(uint16_t): 79 pkt->set(retData16); 80 break; 81 case sizeof(uint8_t): 82 pkt->set(retData8); 83 break; 84 default: 85 panic("invalid access size!\n"); 86 } 87 } 88 return pioDelay; 89} 90 91Tick 92IsaFake::write(PacketPtr pkt) 93{ 94 pkt->makeAtomicResponse(); 95 if (params()->warn_access != "") { 96 uint64_t data; 97 switch (pkt->getSize()) { 98 case sizeof(uint64_t): 99 data = pkt->get<uint64_t>(); 100 break; 101 case sizeof(uint32_t): 102 data = pkt->get<uint32_t>(); 103 break; 104 case sizeof(uint16_t): 105 data = pkt->get<uint16_t>(); 106 break; 107 case sizeof(uint8_t): 108 data = pkt->get<uint8_t>(); 109 break; 110 default: 111 panic("invalid access size!\n"); 112 } 113 warn("Device %s accessed by write to address %#x size=%d data=%#x\n", 114 name(), pkt->getAddr(), pkt->getSize(), data); 115 } 116 if (params()->ret_bad_addr) { 117 DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n", 118 pkt->getAddr(), pkt->getSize()); 119 pkt->setBadAddress(); 120 } else { 121 DPRINTF(Tsunami, "write - va=%#x size=%d \n", 122 pkt->getAddr(), pkt->getSize()); 123 124 if (params()->update_data) { 125 switch (pkt->getSize()) { 126 case sizeof(uint64_t): 127 retData64 = pkt->get<uint64_t>(); 128 break; 129 case sizeof(uint32_t): 130 retData32 = pkt->get<uint32_t>(); 131 break; 132 case sizeof(uint16_t): 133 retData16 = pkt->get<uint16_t>(); 134 break; 135 case sizeof(uint8_t): 136 retData8 = pkt->get<uint8_t>(); 137 break; 138 default: 139 panic("invalid access size!\n"); 140 } 141 } 142 } 143 return pioDelay; 144} 145 146IsaFake * 147IsaFakeParams::create() 148{ 149 return new IsaFake(this); 150} 151