isa_fake.cc revision 2641
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 29/** @file 30 * Isa Fake Device implementation 31 */ 32 33#include <deque> 34#include <string> 35#include <vector> 36 37#include "base/trace.hh" 38#include "dev/isa_fake.hh" 39#include "mem/packet.hh" 40#include "sim/builder.hh" 41#include "sim/system.hh" 42 43using namespace std; 44 45IsaFake::IsaFake(Params *p) 46 : BasicPioDevice(p) 47{ 48 pioSize = p->pio_size; 49} 50 51Tick 52IsaFake::read(Packet *pkt) 53{ 54 assert(pkt->result == Packet::Unknown); 55 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 56 57 pkt->time += pioDelay; 58 59 DPRINTF(Tsunami, "read va=%#x size=%d\n", pkt->getAddr(), pkt->getSize()); 60 61 switch (pkt->getSize()) { 62 pkt->set(0xFFFFFFFFFFFFFFFFULL); 63 break; 64 case sizeof(uint32_t): 65 pkt->set((uint32_t)0xFFFFFFFF); 66 break; 67 case sizeof(uint16_t): 68 pkt->set((uint16_t)0xFFFF); 69 break; 70 case sizeof(uint8_t): 71 pkt->set((uint8_t)0xFF); 72 break; 73 default: 74 panic("invalid access size(?) for PCI configspace!\n"); 75 } 76 pkt->result = Packet::Success; 77 return pioDelay; 78} 79 80Tick 81IsaFake::write(Packet *pkt) 82{ 83 pkt->time += pioDelay; 84 DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize()); 85 pkt->result = Packet::Success; 86 return pioDelay; 87} 88 89BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake) 90 91 Param<Addr> pio_addr; 92 Param<Tick> pio_latency; 93 Param<Addr> pio_size; 94 SimObjectParam<Platform *> platform; 95 SimObjectParam<System *> system; 96 97END_DECLARE_SIM_OBJECT_PARAMS(IsaFake) 98 99BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake) 100 101 INIT_PARAM(pio_addr, "Device Address"), 102 INIT_PARAM(pio_latency, "Programmed IO latency"), 103 INIT_PARAM(pio_size, "Size of address range"), 104 INIT_PARAM(platform, "platform"), 105 INIT_PARAM(system, "system object") 106 107END_INIT_SIM_OBJECT_PARAMS(IsaFake) 108 109CREATE_SIM_OBJECT(IsaFake) 110{ 111 IsaFake::Params *p = new IsaFake::Params; 112 p->name = getInstanceName(); 113 p->pio_addr = pio_addr; 114 p->pio_delay = pio_latency; 115 p->pio_size = pio_size; 116 p->platform = platform; 117 p->system = system; 118 return new IsaFake(p); 119} 120 121REGISTER_SIM_OBJECT("IsaFake", IsaFake) 122