2 * Copyright (c) 2004 The Regents of The University of Michigan
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.
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.
30 * A single PCI device configuration space entry.
38 #include "base/inifile.hh"
39 #include "base/misc.hh"
40 #include "base/str.hh" // for to_number
41 #include "base/trace.hh"
42 #include "dev/pciareg.h"
43 #include "dev/pcidev.hh"
44 #include "dev/pciconfigall.hh"
45 #include "mem/functional_mem/memory_control.hh"
46 #include "sim/builder.hh"
47 #include "sim/param.hh"
48 #include "sim/universe.hh"
49 #include "dev/tsunamireg.h"
53 PciDev::PciDev(const string
&name
, MemoryController
*mmu
, PciConfigAll
*cf
,
54 PciConfigData
*cd
, uint32_t bus
, uint32_t dev
, uint32_t func
)
55 : DmaDevice(name
), mmu(mmu
), configSpace(cf
), configData(cd
), busNum(bus
),
56 deviceNum(dev
), functionNum(func
)
58 // copy the config data from the PciConfigData object
60 memcpy(config
.data
, cd
->config
.data
, sizeof(config
.data
));
61 memcpy(BARSize
, cd
->BARSize
, sizeof(BARSize
));
62 memcpy(BARAddrs
, cd
->BARAddrs
, sizeof(BARAddrs
));
64 panic("NULL pointer to configuration data");
66 // Setup pointer in config space to point to this entry
67 if (cf
->deviceExists(dev
,func
))
68 panic("Two PCI devices occuping same dev: %#x func: %#x", dev
, func
);
70 cf
->registerDevice(dev
, func
, this);
74 PciDev::ReadConfig(int offset
, int size
, uint8_t *data
)
77 case sizeof(uint32_t):
78 memcpy((uint8_t*)data
, config
.data
+ offset
, sizeof(uint32_t));
79 *(uint32_t*)data
= htoa(*(uint32_t*)data
);
81 "read device: %#x function: %#x register: %#x %d bytes: data: %#x\n",
82 deviceNum
, functionNum
, offset
, size
,
83 *(uint32_t*)(config
.data
+ offset
));
86 case sizeof(uint16_t):
87 memcpy((uint8_t*)data
, config
.data
+ offset
, sizeof(uint16_t));
88 *(uint16_t*)data
= htoa(*(uint16_t*)data
);
90 "read device: %#x function: %#x register: %#x %d bytes: data: %#x\n",
91 deviceNum
, functionNum
, offset
, size
,
92 *(uint16_t*)(config
.data
+ offset
));
96 memcpy((uint8_t*)data
, config
.data
+ offset
, sizeof(uint8_t));
98 "read device: %#x function: %#x register: %#x %d bytes: data: %#x\n",
99 deviceNum
, functionNum
, offset
, size
,
100 (uint16_t)(*(uint8_t*)(config
.data
+ offset
)));
104 panic("Invalid Read Size");
109 PciDev::WriteConfig(int offset
, int size
, uint32_t data
)
121 "write device: %#x function: %#x reg: %#x size: %d data: %#x\n",
122 deviceNum
, functionNum
, offset
, size
, word_value
);
124 barnum
= (offset
- PCI0_BASE_ADDR0
) >> 2;
127 case sizeof(uint8_t): // 1-byte access
129 case PCI0_INTERRUPT_LINE
:
130 case PCI_CACHE_LINE_SIZE
:
131 case PCI_LATENCY_TIMER
:
132 *(uint8_t *)&config
.data
[offset
] = htoa(byte_value
);
136 panic("writing to a read only register");
140 case sizeof(uint16_t): // 2-byte access
144 case PCI_CACHE_LINE_SIZE
:
145 *(uint16_t *)&config
.data
[offset
] = htoa(half_value
);
149 panic("writing to a read only register");
153 case sizeof(uint16_t)+1: // 3-byte access
154 panic("invalid access size");
156 case sizeof(uint32_t): // 4-byte access
158 case PCI0_BASE_ADDR0
:
159 case PCI0_BASE_ADDR1
:
160 case PCI0_BASE_ADDR2
:
161 case PCI0_BASE_ADDR3
:
162 case PCI0_BASE_ADDR4
:
163 case PCI0_BASE_ADDR5
:
164 // Writing 0xffffffff to a BAR tells the card to set the
166 // to size of memory it needs
167 if (word_value
== 0xffffffff) {
168 // This is I/O Space, bottom two bits are read only
169 if (htoa(config
.data
[offset
]) & 0x1) {
170 *(uint32_t *)&config
.data
[offset
] = htoa(
171 ~(BARSize
[barnum
] - 1) |
172 (htoa(config
.data
[offset
]) & 0x3));
174 // This is memory space, bottom four bits are read only
175 *(uint32_t *)&config
.data
[offset
] = htoa(
176 ~(BARSize
[barnum
] - 1) |
177 (htoa(config
.data
[offset
]) & 0xF));
180 // This is I/O Space, bottom two bits are read only
181 if(htoa(config
.data
[offset
]) & 0x1) {
182 *(uint32_t *)&config
.data
[offset
] = htoa((word_value
& ~0x3) |
183 (htoa(config
.data
[offset
]) & 0x3));
185 if (word_value
& ~0x1) {
186 Addr base_addr
= (word_value
& ~0x1) + TSUNAMI_PCI0_IO
;
187 Addr base_size
= BARSize
[barnum
];
189 // It's never been set
190 if (BARAddrs
[barnum
] == 0)
191 mmu
->add_child((FunctionalMemory
*)this,
192 RangeSize(base_addr
, base_size
));
194 mmu
->update_child((FunctionalMemory
*)this,
195 RangeSize(BARAddrs
[barnum
],
197 RangeSize(base_addr
, base_size
));
199 BARAddrs
[barnum
] = base_addr
;
203 // This is memory space, bottom four bits are read only
204 *(uint32_t *)&config
.data
[offset
] = htoa((word_value
& ~0xF) |
205 (htoa(config
.data
[offset
]) & 0xF));
207 if (word_value
& ~0x3) {
208 Addr base_addr
= (word_value
& ~0x3) +
211 Addr base_size
= BARSize
[barnum
];
213 // It's never been set
214 if (BARAddrs
[barnum
] == 0)
215 mmu
->add_child((FunctionalMemory
*)this,
216 RangeSize(base_addr
, base_size
));
218 mmu
->update_child((FunctionalMemory
*)this,
219 RangeSize(BARAddrs
[barnum
],
221 RangeSize(base_addr
, base_size
));
223 BARAddrs
[barnum
] = base_addr
;
229 case PCI0_ROM_BASE_ADDR
:
230 if (word_value
== 0xfffffffe)
231 *(uint32_t *)&config
.data
[offset
] = 0xffffffff;
233 *(uint32_t *)&config
.data
[offset
] = htoa(word_value
);
237 // This could also clear some of the error bits in the Status
238 // register. However they should never get set, so lets ignore
240 *(uint16_t *)&config
.data
[offset
] = htoa(half_value
);
244 DPRINTF(PCIDEV
, "Writing to a read only register");
251 PciDev::serialize(ostream
&os
)
253 SERIALIZE_ARRAY(BARSize
, 6);
254 SERIALIZE_ARRAY(BARAddrs
, 6);
255 SERIALIZE_ARRAY(config
.data
, 64);
259 PciDev::unserialize(Checkpoint
*cp
, const std::string
§ion
)
261 UNSERIALIZE_ARRAY(BARSize
, 6);
262 UNSERIALIZE_ARRAY(BARAddrs
, 6);
263 UNSERIALIZE_ARRAY(config
.data
, 64);
265 // Add the MMU mappings for the BARs
266 for (int i
=0; i
< 6; i
++) {
267 if (BARAddrs
[i
] != 0)
268 mmu
->add_child(this, RangeSize(BARAddrs
[i
], BARSize
[i
]));
272 #ifndef DOXYGEN_SHOULD_SKIP_THIS
274 BEGIN_DECLARE_SIM_OBJECT_PARAMS(PciConfigData
)
276 Param
<uint16_t> VendorID
;
277 Param
<uint16_t> DeviceID
;
278 Param
<uint16_t> Command
;
279 Param
<uint16_t> Status
;
280 Param
<uint8_t> Revision
;
281 Param
<uint8_t> ProgIF
;
282 Param
<uint8_t> SubClassCode
;
283 Param
<uint8_t> ClassCode
;
284 Param
<uint8_t> CacheLineSize
;
285 Param
<uint8_t> LatencyTimer
;
286 Param
<uint8_t> HeaderType
;
288 Param
<uint32_t> BAR0
;
289 Param
<uint32_t> BAR1
;
290 Param
<uint32_t> BAR2
;
291 Param
<uint32_t> BAR3
;
292 Param
<uint32_t> BAR4
;
293 Param
<uint32_t> BAR5
;
294 Param
<uint32_t> CardbusCIS
;
295 Param
<uint16_t> SubsystemVendorID
;
296 Param
<uint16_t> SubsystemID
;
297 Param
<uint32_t> ExpansionROM
;
298 Param
<uint8_t> InterruptLine
;
299 Param
<uint8_t> InterruptPin
;
300 Param
<uint8_t> MinimumGrant
;
301 Param
<uint8_t> MaximumLatency
;
302 Param
<uint32_t> BAR0Size
;
303 Param
<uint32_t> BAR1Size
;
304 Param
<uint32_t> BAR2Size
;
305 Param
<uint32_t> BAR3Size
;
306 Param
<uint32_t> BAR4Size
;
307 Param
<uint32_t> BAR5Size
;
309 END_DECLARE_SIM_OBJECT_PARAMS(PciConfigData
)
311 BEGIN_INIT_SIM_OBJECT_PARAMS(PciConfigData
)
313 INIT_PARAM(VendorID
, "Vendor ID"),
314 INIT_PARAM(DeviceID
, "Device ID"),
315 INIT_PARAM_DFLT(Command
, "Command Register", 0x00),
316 INIT_PARAM_DFLT(Status
, "Status Register", 0x00),
317 INIT_PARAM_DFLT(Revision
, "Device Revision", 0x00),
318 INIT_PARAM_DFLT(ProgIF
, "Programming Interface", 0x00),
319 INIT_PARAM(SubClassCode
, "Sub-Class Code"),
320 INIT_PARAM(ClassCode
, "Class Code"),
321 INIT_PARAM_DFLT(CacheLineSize
, "System Cacheline Size", 0x00),
322 INIT_PARAM_DFLT(LatencyTimer
, "PCI Latency Timer", 0x00),
323 INIT_PARAM_DFLT(HeaderType
, "PCI Header Type", 0x00),
324 INIT_PARAM_DFLT(BIST
, "Built In Self Test", 0x00),
325 INIT_PARAM_DFLT(BAR0
, "Base Address Register 0", 0x00),
326 INIT_PARAM_DFLT(BAR1
, "Base Address Register 1", 0x00),
327 INIT_PARAM_DFLT(BAR2
, "Base Address Register 2", 0x00),
328 INIT_PARAM_DFLT(BAR3
, "Base Address Register 3", 0x00),
329 INIT_PARAM_DFLT(BAR4
, "Base Address Register 4", 0x00),
330 INIT_PARAM_DFLT(BAR5
, "Base Address Register 5", 0x00),
331 INIT_PARAM_DFLT(CardbusCIS
, "Cardbus Card Information Structure", 0x00),
332 INIT_PARAM_DFLT(SubsystemVendorID
, "Subsystem Vendor ID", 0x00),
333 INIT_PARAM_DFLT(SubsystemID
, "Subsystem ID", 0x00),
334 INIT_PARAM_DFLT(ExpansionROM
, "Expansion ROM Base Address Register", 0x00),
335 INIT_PARAM(InterruptLine
, "Interrupt Line Register"),
336 INIT_PARAM(InterruptPin
, "Interrupt Pin Register"),
337 INIT_PARAM_DFLT(MinimumGrant
, "Minimum Grant", 0x00),
338 INIT_PARAM_DFLT(MaximumLatency
, "Maximum Latency", 0x00),
339 INIT_PARAM_DFLT(BAR0Size
, "Base Address Register 0 Size", 0x00),
340 INIT_PARAM_DFLT(BAR1Size
, "Base Address Register 1 Size", 0x00),
341 INIT_PARAM_DFLT(BAR2Size
, "Base Address Register 2 Size", 0x00),
342 INIT_PARAM_DFLT(BAR3Size
, "Base Address Register 3 Size", 0x00),
343 INIT_PARAM_DFLT(BAR4Size
, "Base Address Register 4 Size", 0x00),
344 INIT_PARAM_DFLT(BAR5Size
, "Base Address Register 5 Size", 0x00)
346 END_INIT_SIM_OBJECT_PARAMS(PciConfigData
)
348 CREATE_SIM_OBJECT(PciConfigData
)
350 PciConfigData
*data
= new PciConfigData(getInstanceName());
352 data
->config
.hdr
.vendor
= htoa(VendorID
);
353 data
->config
.hdr
.device
= htoa(DeviceID
);
354 data
->config
.hdr
.command
= htoa(Command
);
355 data
->config
.hdr
.status
= htoa(Status
);
356 data
->config
.hdr
.revision
= htoa(Revision
);
357 data
->config
.hdr
.progIF
= htoa(ProgIF
);
358 data
->config
.hdr
.subClassCode
= htoa(SubClassCode
);
359 data
->config
.hdr
.classCode
= htoa(ClassCode
);
360 data
->config
.hdr
.cacheLineSize
= htoa(CacheLineSize
);
361 data
->config
.hdr
.latencyTimer
= htoa(LatencyTimer
);
362 data
->config
.hdr
.headerType
= htoa(HeaderType
);
363 data
->config
.hdr
.bist
= htoa(BIST
);
365 data
->config
.hdr
.pci0
.baseAddr0
= htoa(BAR0
);
366 data
->config
.hdr
.pci0
.baseAddr1
= htoa(BAR1
);
367 data
->config
.hdr
.pci0
.baseAddr2
= htoa(BAR2
);
368 data
->config
.hdr
.pci0
.baseAddr3
= htoa(BAR3
);
369 data
->config
.hdr
.pci0
.baseAddr4
= htoa(BAR4
);
370 data
->config
.hdr
.pci0
.baseAddr5
= htoa(BAR5
);
371 data
->config
.hdr
.pci0
.cardbusCIS
= htoa(CardbusCIS
);
372 data
->config
.hdr
.pci0
.subsystemVendorID
= htoa(SubsystemVendorID
);
373 data
->config
.hdr
.pci0
.subsystemID
= htoa(SubsystemVendorID
);
374 data
->config
.hdr
.pci0
.expansionROM
= htoa(ExpansionROM
);
375 data
->config
.hdr
.pci0
.interruptLine
= htoa(InterruptLine
);
376 data
->config
.hdr
.pci0
.interruptPin
= htoa(InterruptPin
);
377 data
->config
.hdr
.pci0
.minimumGrant
= htoa(MinimumGrant
);
378 data
->config
.hdr
.pci0
.maximumLatency
= htoa(MaximumLatency
);
380 data
->BARSize
[0] = BAR0Size
;
381 data
->BARSize
[1] = BAR1Size
;
382 data
->BARSize
[2] = BAR2Size
;
383 data
->BARSize
[3] = BAR3Size
;
384 data
->BARSize
[4] = BAR4Size
;
385 data
->BARSize
[5] = BAR5Size
;
390 REGISTER_SIM_OBJECT("PciConfigData", PciConfigData
)
392 #endif // DOXYGEN_SHOULD_SKIP_THIS