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;

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42using namespace std;
43
44IsaFake::IsaFake(Params *p)
45 : BasicPioDevice(p)
46{
47 if (!params()->retBadAddr)
48 pioSize = p->pio_size;
49
50 memset(&retData, p->retData, sizeof(retData));
51}
52
53Tick
54IsaFake::read(PacketPtr pkt)
55{
56 assert(pkt->result == Packet::Unknown);
57
58 if (params()->retBadAddr) {
59 DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n",
60 pkt->getAddr(), pkt->getSize());
61 pkt->result = Packet::BadAddress;
62 } else {
63 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
64 DPRINTF(Tsunami, "read va=%#x size=%d\n",
65 pkt->getAddr(), pkt->getSize());
66 switch (pkt->getSize()) {
67 case sizeof(uint64_t):
68 pkt->set(retData);
69 break;
70 case sizeof(uint32_t):
71 pkt->set((uint32_t)retData);
72 break;
73 case sizeof(uint16_t):
74 pkt->set((uint16_t)retData);
75 break;
76 case sizeof(uint8_t):
77 pkt->set((uint8_t)retData);
78 break;
79 default:
80 panic("invalid access size!\n");
81 }
82 pkt->result = Packet::Success;
83 }
84 return pioDelay;
85}
86
87Tick
88IsaFake::write(PacketPtr pkt)
89{
90 if (params()->retBadAddr) {
91 DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n",
92 pkt->getAddr(), pkt->getSize());
93 pkt->result = Packet::BadAddress;
94 } else {
95 DPRINTF(Tsunami, "write - va=%#x size=%d \n",
96 pkt->getAddr(), pkt->getSize());
97 pkt->result = Packet::Success;
98 }
99 return pioDelay;
100}
101
102BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
103
104 Param<Addr> pio_addr;
105 Param<Tick> pio_latency;
106 Param<Addr> pio_size;
107 Param<bool> ret_bad_addr;
108 Param<uint8_t> ret_data;
109 SimObjectParam<Platform *> platform;
110 SimObjectParam<System *> system;
111
112END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
113
114BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
115
116 INIT_PARAM(pio_addr, "Device Address"),
117 INIT_PARAM(pio_latency, "Programmed IO latency"),
118 INIT_PARAM(pio_size, "Size of address range"),
119 INIT_PARAM(ret_bad_addr, "Return pkt status BadAddr"),
120 INIT_PARAM(ret_data, "Data to return if not bad addr"),
121 INIT_PARAM(platform, "platform"),
122 INIT_PARAM(system, "system object")
123
124END_INIT_SIM_OBJECT_PARAMS(IsaFake)
125
126CREATE_SIM_OBJECT(IsaFake)
127{
128 IsaFake::Params *p = new IsaFake::Params;
129 p->name = getInstanceName();
130 p->pio_addr = pio_addr;
131 p->pio_delay = pio_latency;
132 p->pio_size = pio_size;
133 p->retBadAddr = ret_bad_addr;
134 p->retData = ret_data;
135 p->platform = platform;
136 p->system = system;
137 return new IsaFake(p);
138}
139
140REGISTER_SIM_OBJECT("IsaFake", IsaFake)