1/*
2 * Copyright (c) 2006 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 * This device acts as a disk similar to the memory mapped disk device
33 * in legion. Any access is translated to an offset in the disk image.
34 */
35
36#include <cstring>
37
38#include "base/trace.hh"
39#include "debug/IdeDisk.hh"
40#include "dev/sparc/mm_disk.hh"
41#include "dev/platform.hh"
42#include "mem/packet_access.hh"
43#include "mem/port.hh"
44#include "sim/byteswap.hh"
45#include "sim/system.hh"
46
47MmDisk::MmDisk(const Params *p)
| 1/*
2 * Copyright (c) 2006 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 * This device acts as a disk similar to the memory mapped disk device
33 * in legion. Any access is translated to an offset in the disk image.
34 */
35
36#include <cstring>
37
38#include "base/trace.hh"
39#include "debug/IdeDisk.hh"
40#include "dev/sparc/mm_disk.hh"
41#include "dev/platform.hh"
42#include "mem/packet_access.hh"
43#include "mem/port.hh"
44#include "sim/byteswap.hh"
45#include "sim/system.hh"
46
47MmDisk::MmDisk(const Params *p)
|
52}
53
54Tick
55MmDisk::read(PacketPtr pkt)
56{
57 Addr accessAddr;
58 off_t sector;
59 uint16_t d16;
60 uint32_t d32;
61 uint64_t d64;
62
63 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
64 accessAddr = pkt->getAddr() - pioAddr;
65
66 sector = accessAddr / SectorSize;
67
68 if (sector != curSector) {
69 if (dirty) {
70#ifndef NDEBUG
71 off_t bytes_written =
72#endif
73 image->write(diskData, curSector);
74 assert(bytes_written == SectorSize);
75 }
76#ifndef NDEBUG
77 off_t bytes_read =
78#endif
79 image->read(diskData, sector);
80 assert(bytes_read == SectorSize);
81 curSector = sector;
82 }
83 switch (pkt->getSize()) {
84 case sizeof(uint8_t):
85 pkt->set(diskData[accessAddr % SectorSize]);
86 DPRINTF(IdeDisk, "reading byte %#x value= %#x\n", accessAddr, diskData[accessAddr %
87 SectorSize]);
88 break;
89 case sizeof(uint16_t):
90 memcpy(&d16, diskData + (accessAddr % SectorSize), 2);
91 pkt->set(htobe(d16));
92 DPRINTF(IdeDisk, "reading word %#x value= %#x\n", accessAddr, d16);
93 break;
94 case sizeof(uint32_t):
95 memcpy(&d32, diskData + (accessAddr % SectorSize), 4);
96 pkt->set(htobe(d32));
97 DPRINTF(IdeDisk, "reading dword %#x value= %#x\n", accessAddr, d32);
98 break;
99 case sizeof(uint64_t):
100 memcpy(&d64, diskData + (accessAddr % SectorSize), 8);
101 pkt->set(htobe(d64));
102 DPRINTF(IdeDisk, "reading qword %#x value= %#x\n", accessAddr, d64);
103 break;
104 default:
105 panic("Invalid access size\n");
106 }
107
108 pkt->makeAtomicResponse();
109 return pioDelay;
110}
111
112Tick
113MmDisk::write(PacketPtr pkt)
114{
115 Addr accessAddr;
116 off_t sector;
117 uint16_t d16;
118 uint32_t d32;
119 uint64_t d64;
120
121 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
122 accessAddr = pkt->getAddr() - pioAddr;
123
124 sector = accessAddr / SectorSize;
125
126 if (sector != curSector) {
127 if (dirty) {
128#ifndef NDEBUG
129 off_t bytes_written =
130#endif
131 image->write(diskData, curSector);
132 assert(bytes_written == SectorSize);
133 }
134#ifndef NDEBUG
135 off_t bytes_read =
136#endif
137 image->read(diskData, sector);
138 assert(bytes_read == SectorSize);
139 curSector = sector;
140 }
141 dirty = true;
142
143 switch (pkt->getSize()) {
144 case sizeof(uint8_t):
145 diskData[accessAddr % SectorSize] = htobe(pkt->get<uint8_t>());
146 DPRINTF(IdeDisk, "writing byte %#x value= %#x\n", accessAddr, diskData[accessAddr %
147 SectorSize]);
148 break;
149 case sizeof(uint16_t):
150 d16 = htobe(pkt->get<uint16_t>());
151 memcpy(diskData + (accessAddr % SectorSize), &d16, 2);
152 DPRINTF(IdeDisk, "writing word %#x value= %#x\n", accessAddr, d16);
153 break;
154 case sizeof(uint32_t):
155 d32 = htobe(pkt->get<uint32_t>());
156 memcpy(diskData + (accessAddr % SectorSize), &d32, 4);
157 DPRINTF(IdeDisk, "writing dword %#x value= %#x\n", accessAddr, d32);
158 break;
159 case sizeof(uint64_t):
160 d64 = htobe(pkt->get<uint64_t>());
161 memcpy(diskData + (accessAddr % SectorSize), &d64, 8);
162 DPRINTF(IdeDisk, "writing qword %#x value= %#x\n", accessAddr, d64);
163 break;
164 default:
165 panic("Invalid access size\n");
166 }
167
168 pkt->makeAtomicResponse();
169 return pioDelay;
170}
171
172void
173MmDisk::serialize(std::ostream &os)
174{
175 // just write any dirty changes to the cow layer it will take care of
176 // serialization
177 if (dirty) {
178#ifndef NDEBUG
179 int bytes_read =
180#endif
181 image->write(diskData, curSector);
182 assert(bytes_read == SectorSize);
183 }
184}
185
186MmDisk *
187MmDiskParams::create()
188{
189 return new MmDisk(this);
190}
| 52}
53
54Tick
55MmDisk::read(PacketPtr pkt)
56{
57 Addr accessAddr;
58 off_t sector;
59 uint16_t d16;
60 uint32_t d32;
61 uint64_t d64;
62
63 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
64 accessAddr = pkt->getAddr() - pioAddr;
65
66 sector = accessAddr / SectorSize;
67
68 if (sector != curSector) {
69 if (dirty) {
70#ifndef NDEBUG
71 off_t bytes_written =
72#endif
73 image->write(diskData, curSector);
74 assert(bytes_written == SectorSize);
75 }
76#ifndef NDEBUG
77 off_t bytes_read =
78#endif
79 image->read(diskData, sector);
80 assert(bytes_read == SectorSize);
81 curSector = sector;
82 }
83 switch (pkt->getSize()) {
84 case sizeof(uint8_t):
85 pkt->set(diskData[accessAddr % SectorSize]);
86 DPRINTF(IdeDisk, "reading byte %#x value= %#x\n", accessAddr, diskData[accessAddr %
87 SectorSize]);
88 break;
89 case sizeof(uint16_t):
90 memcpy(&d16, diskData + (accessAddr % SectorSize), 2);
91 pkt->set(htobe(d16));
92 DPRINTF(IdeDisk, "reading word %#x value= %#x\n", accessAddr, d16);
93 break;
94 case sizeof(uint32_t):
95 memcpy(&d32, diskData + (accessAddr % SectorSize), 4);
96 pkt->set(htobe(d32));
97 DPRINTF(IdeDisk, "reading dword %#x value= %#x\n", accessAddr, d32);
98 break;
99 case sizeof(uint64_t):
100 memcpy(&d64, diskData + (accessAddr % SectorSize), 8);
101 pkt->set(htobe(d64));
102 DPRINTF(IdeDisk, "reading qword %#x value= %#x\n", accessAddr, d64);
103 break;
104 default:
105 panic("Invalid access size\n");
106 }
107
108 pkt->makeAtomicResponse();
109 return pioDelay;
110}
111
112Tick
113MmDisk::write(PacketPtr pkt)
114{
115 Addr accessAddr;
116 off_t sector;
117 uint16_t d16;
118 uint32_t d32;
119 uint64_t d64;
120
121 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
122 accessAddr = pkt->getAddr() - pioAddr;
123
124 sector = accessAddr / SectorSize;
125
126 if (sector != curSector) {
127 if (dirty) {
128#ifndef NDEBUG
129 off_t bytes_written =
130#endif
131 image->write(diskData, curSector);
132 assert(bytes_written == SectorSize);
133 }
134#ifndef NDEBUG
135 off_t bytes_read =
136#endif
137 image->read(diskData, sector);
138 assert(bytes_read == SectorSize);
139 curSector = sector;
140 }
141 dirty = true;
142
143 switch (pkt->getSize()) {
144 case sizeof(uint8_t):
145 diskData[accessAddr % SectorSize] = htobe(pkt->get<uint8_t>());
146 DPRINTF(IdeDisk, "writing byte %#x value= %#x\n", accessAddr, diskData[accessAddr %
147 SectorSize]);
148 break;
149 case sizeof(uint16_t):
150 d16 = htobe(pkt->get<uint16_t>());
151 memcpy(diskData + (accessAddr % SectorSize), &d16, 2);
152 DPRINTF(IdeDisk, "writing word %#x value= %#x\n", accessAddr, d16);
153 break;
154 case sizeof(uint32_t):
155 d32 = htobe(pkt->get<uint32_t>());
156 memcpy(diskData + (accessAddr % SectorSize), &d32, 4);
157 DPRINTF(IdeDisk, "writing dword %#x value= %#x\n", accessAddr, d32);
158 break;
159 case sizeof(uint64_t):
160 d64 = htobe(pkt->get<uint64_t>());
161 memcpy(diskData + (accessAddr % SectorSize), &d64, 8);
162 DPRINTF(IdeDisk, "writing qword %#x value= %#x\n", accessAddr, d64);
163 break;
164 default:
165 panic("Invalid access size\n");
166 }
167
168 pkt->makeAtomicResponse();
169 return pioDelay;
170}
171
172void
173MmDisk::serialize(std::ostream &os)
174{
175 // just write any dirty changes to the cow layer it will take care of
176 // serialization
177 if (dirty) {
178#ifndef NDEBUG
179 int bytes_read =
180#endif
181 image->write(diskData, curSector);
182 assert(bytes_read == SectorSize);
183 }
184}
185
186MmDisk *
187MmDiskParams::create()
188{
189 return new MmDisk(this);
190}
|