isa_fake.cc revision 4870:fcc39d001154
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/builder.hh" 40#include "sim/system.hh" 41 42using namespace std; 43 44IsaFake::IsaFake(Params *p) 45 : BasicPioDevice(p) 46{ 47 if (!params()->retBadAddr) 48 pioSize = p->pio_size; 49 50 retData8 = params()->retData8; 51 retData16 = params()->retData16; 52 retData32 = params()->retData32; 53 retData64 = params()->retData64; 54} 55 56Tick 57IsaFake::read(PacketPtr pkt) 58{ 59 60 if (params()->warnAccess != "") 61 warn("Device %s accessed by read to address %#x size=%d\n", 62 name(), pkt->getAddr(), pkt->getSize()); 63 if (params()->retBadAddr) { 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 pkt->makeAtomicResponse(); 88 } 89 return pioDelay; 90} 91 92Tick 93IsaFake::write(PacketPtr pkt) 94{ 95 if (params()->warnAccess != "") { 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()->retBadAddr) { 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()->updateData) { 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 pkt->makeAtomicResponse(); 143 } 144 return pioDelay; 145} 146 147BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake) 148 149 Param<Addr> pio_addr; 150 Param<Tick> pio_latency; 151 Param<Addr> pio_size; 152 Param<bool> ret_bad_addr; 153 Param<bool> update_data; 154 Param<std::string> warn_access; 155 Param<uint8_t> ret_data8; 156 Param<uint16_t> ret_data16; 157 Param<uint32_t> ret_data32; 158 Param<uint64_t> ret_data64; 159 SimObjectParam<Platform *> platform; 160 SimObjectParam<System *> system; 161 162END_DECLARE_SIM_OBJECT_PARAMS(IsaFake) 163 164BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake) 165 166 INIT_PARAM(pio_addr, "Device Address"), 167 INIT_PARAM(pio_latency, "Programmed IO latency"), 168 INIT_PARAM(pio_size, "Size of address range"), 169 INIT_PARAM(ret_bad_addr, "Return pkt status BadAddr"), 170 INIT_PARAM(update_data, "Update returned data"), 171 INIT_PARAM(warn_access, "Warn if this device is touched"), 172 INIT_PARAM(ret_data8, "Data to return if not bad addr"), 173 INIT_PARAM(ret_data16, "Data to return if not bad addr"), 174 INIT_PARAM(ret_data32, "Data to return if not bad addr"), 175 INIT_PARAM(ret_data64, "Data to return if not bad addr"), 176 INIT_PARAM(platform, "platform"), 177 INIT_PARAM(system, "system object") 178 179END_INIT_SIM_OBJECT_PARAMS(IsaFake) 180 181CREATE_SIM_OBJECT(IsaFake) 182{ 183 IsaFake::Params *p = new IsaFake::Params; 184 p->name = getInstanceName(); 185 p->pio_addr = pio_addr; 186 p->pio_delay = pio_latency; 187 p->pio_size = pio_size; 188 p->retBadAddr = ret_bad_addr; 189 p->updateData = update_data; 190 p->warnAccess = warn_access; 191 p->retData8= ret_data8; 192 p->retData16 = ret_data16; 193 p->retData32 = ret_data32; 194 p->retData64 = ret_data64; 195 p->platform = platform; 196 p->system = system; 197 return new IsaFake(p); 198} 199 200REGISTER_SIM_OBJECT("IsaFake", IsaFake) 201