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PCI Express Non-Transparent Bridge
Intel
®
Xeon
®
Processor C5500/C3500 Series
Datasheet, Volume 1 February 2010
188 Order Number: 323103-001
6:4 RW 000b
Multiple Message Enable
Applicable only to PCI Express ports. Software writes to this field to indicate
the number of allocated messages which is aligned to a power of two. When
MSI is enabled, the software will allocate at least one message to the device. A
value of 000 indicates 1 message. See Table 91 for discussion on how the
interrupts are distributed amongst the various sources of interrupt based on
the number of messages allocated by software for the PCI Express NTB port.
Value
Number of Messages Requested
000b = 1
001b = 2
010b = 4
011b = 8
100b = 16
101b = 32
110b = Reserved
111b = Reserved
3:1 RO 001b
Multiple Message Capable
IIO’s PCI Express port supports two messages for all internal events.
Value
Number of Messages Requested
000b = 1
001b = 2
010b = 4
011b = 8
100b = 16
101b = 32
110b = Reserved
111b = Reserved
0RW 0b
MSI Enable
The software sets this bit to select platform-specific interrupts or transmit MSI
messages.
0: Disables MSI from being generated.
1: Enables the PCI Express port to use MSI messages for RAS, provided bit 4
in Section 3.19.4.20, “MISCCTRLSTS: Misc. Control and Status Register” on
page 216 is clear and also enables the Express port to use MSI messages for
PM and HP events at the root port provided these individual events are not
enabled for ACPI handling (see Section 3.19.4.20, “MISCCTRLSTS: Misc.
Control and Status Register” on page 216) for details.
Note: Software must disable INTx and MSI-X for this device when using MSI
Register:
MSICTRL
Bus:0
Device:3
Function:0
Offset:62h
Bit Attr Default Description
- 2 Order Number: 418186-001 2
- Contents 3
- 4 Order Number: 323103-001 4
- Order Number: 323103-001 5 5
- 6 Order Number: 323103-001 6
- Order Number: 323103-001 7 7
- .......193 8
- Order Number: 323103-001 9 9
- Processor C5500/C3500 Series 10
- 10 Order Number: 323103-001 10
- Order Number: 323103-001 11 11
- 12 Order Number: 323103-001 12
- Order Number: 323103-001 13 13
- 14 Order Number: 323103-001 14
- Order Number: 323103-001 15 15
- 16 Order Number: 323103-001 16
- Order Number: 323103-001 17 17
- 18 Order Number: 323103-001 18
- Order Number: 323103-001 19 19
- 20 Order Number: 323103-001 20
- Order Number: 323103-001 21 21
- 22 Order Number: 323103-001 22
- Revision History 23
- 1.0 Features Summary 24
- Intel 3420 25
- Figure 2. Intel 26
- Configuration 26
- 1.2 Processor Feature Details 27
- 1.3 SKUs 27
- 1.4 Interfaces 28
- 1.4.3 PCI Express 29
- 1.4.6 SMBus 30
- 1.5 Power Management Support 31
- 1.7 Package 31
- 1.8 Terminology 32
- 1.9 Related Documents 33
- Table 4. PCH Documents 34
- 2.0 Interfaces 35
- 2.1.3.2 Single-Channel Mode 39
- 2.1.3.4 Spare Channel Mode 40
- 2.1.3.5 Mirrored Channel Mode 41
- 2.1.3.6 Lockstep Mode 42
- Channel 46
- Processor 47
- Fast Memory Access 48
- 2.1.5.2 Command Overlap 49
- 2.1.9 Patrol Scrub 51
- 2.1.10 Memory Address Decode 52
- 2.1.11 Address Translations 55
- 2.1.12 DDR Protocol Support 58
- 2.1.13 Refresh 58
- 2.1.14 Power Management 59
- . Since 63
- 2.1.14.8 2X Refresh 65
- 2.1.14.9 Demand Observation 66
- 2.1.14.10 Rank Sharing 67
- 2.1.14.11 Registers 67
- 2.2.1.1 Thermal Management 70
- 2.2.2.1 Ping() 71
- 2.2.2.2 GetDIB() 72
- 2.2.2.3 GetTemp() 73
- 2.2.2.4 PCIConfigRd() 74
- Reserved 75
- Bus Device Function Register 75
- 2.2.2.5 PCIConfigWr() 76
- 2.2.2.6 Mailbox 77
- 0 1 2 3 4 80
- Request Type Data[31:0] 80
- 2.2.2.7 MbxSend() 82
- 2.2.2.8 MbxGet() 84
- 2.2.3 Multi-Domain Commands 86
- 2.2.4.1 Abort FCS 87
- 2.2.4.2 Completion Codes 87
- 2.2.5 Originator Responses 88
- 2.2.6.1 Format 89
- 2.2.6.2 Interpretation 89
- 2.2.6.3 Temperature Filtering 89
- 2.2.6.4 Reserved Values 89
- 2.2.7.1 Power-up Sequencing 90
- 2.2.7.2 Device Discovery 91
- 2.2.7.3 Client Addressing 91
- 2.2.7.4 C-States 91
- 2.2.7.5 S-States 91
- 2.2.7.6 Processor Reset 92
- 2.3.2 Master SMBus 93
- 2.3.3 SMBus Physical Layer 93
- Address [15:8] 95
- Address [7:0] 95
- 2.3.7 SMBus Error Handling 97
- 2.3.8 SMBus Interface Reset 97
- 2.4 Intel 105
- 2.4.2.1 Processor’s Intel 107
- 2.4.3.1 Detect Intel 107
- Processors 107
- 2.4.5.1 Link Layer Attributes 108
- 2.4.9 Protocol Layer 109
- 2.4.7 Intel 109
- 2.4.8 Transport Layer 109
- 2.4.9.2 Intel 110
- 2.4.9.3 Intel 110
- 2.4.9.4 Interrupt Handling 110
- 2.4.9.5 Fault Handling 111
- 2.4.9.6 Reset/Initialization 111
- 2.4.9.7 Other Attributes 111
- 2.5.2.1 Link Error Protection 112
- 2.5.2.2 Message Class 112
- 2.5.2.4 Ordering 112
- 2.5.3 Protocol Layer 113
- 2.5.4 Snooping Modes 113
- 2.5.5.1 NodeID Generation 114
- 2.5.5.2 Memory Decoder 114
- 2.5.5.3 I/O Decoder 114
- 2.5.6 Special Response Status 115
- 2.5.8 Inbound Coherent 116
- 2.5.9 Inbound Non-Coherent 116
- 2.5.10 Profile Support 116
- 2.5.11.1 Write Cache Depth 117
- 2.5.11.2 Coherent Write Flow 117
- 2.5.11.3 Eviction Policy 117
- 2.5.13 Time-Out Counter 118
- 2.6 PCI Express Interface 119
- 2.6.1.1 Transaction Layer 120
- 2.6.1.2 Data Link Layer 120
- 2.6.1.3 Physical Layer 120
- 2.6.2.1 Link Training 120
- 2.6.2.2 Port Bifurcation 121
- 2.6.2.4 Degraded Mode 122
- 2.6.2.5 Lane Reversal 123
- 2.6.7 Inbound Transactions 125
- 2.6.8 Outbound Transactions 126
- 2.6.9 Lock Support 126
- 2.6.10.1 Unlock 127
- 2.6.10.2 EOI 127
- 2.6.12.1 Transaction ID 128
- 2.6.12.2 Attributes 129
- 2.6.12.3 Traffic Class 129
- 2.6.15 PCI Express RAS 130
- 2.6.16 ECRC Support 130
- 2.6.17 Completion Timeout 130
- 2.6.18 Data Poisoning 130
- 2.6.20.1 Ack/Nak 131
- 2.6.20.2 Link Level Retry 131
- 2.6.23.1 Polarity Inversion 133
- 2.7.1 DMI Error Flow 134
- 2.7.3 DMI Link Down 134
- 3.1 Introduction 135
- Processor 135
- C5500/C3500 Series 135
- Processor C5500/ 136
- C3500 Series NTB 136
- System A 139
- System B 139
- Root Complex 142
- 3.6 Architecture Overview 143
- Core Complex 144
- 3.6.3 Crosslink Configuration 146
- 3.6.6 Address Translation 152
- PCI EP captures Type 0 CFG 156
- WR Request and uses for 156
- 3.7 NTB Inbound Transactions 158
- 3.7.2.1 Error Reporting 159
- 3.8 Outbound Transactions 160
- 3.8.2 Lock Support 161
- 3.8.3.1 EOI 163
- 3.10.2 Attributes 164
- 3.11 Completer ID 165
- 3.12 Initialization 165
- 3.13 Reset Requirements 167
- 3.14 Power Management 167
- 3.16 MSI-X Vector Mapping 169
- 3.18.3 Bring Up Help 170
- PCI Header 171
- PCI Device 171
- Dependent 171
- Extended 171
- Configuration Space 171
- Bit Attr Default Description 175
- PCIE_ONLY 181
- Register default: 00003000h 193
- 3.19.4.9 HDRLOG: Header Log 211
- register exists 234
- Common Configuration Space 240
- E + 500h + Offset 241
- 1BASE + 500h + Offset 242
- Express NTB port 246
- MSICAPID 252
- MSINXTPTR 252
- MSIXCAPID 257
- MSIXNXTPTR 257
- MSIXMSGCTRL 257
- PBAOFF_BIR 259
- 3.21 NTB MMIO Space 277
- Table 94. NTB MMIO Map 278
- Table 95. NTB MMIO Map 300
- MSIXTBLn 301
- MSIXDATAn 301
- MSIXVECCNTLn 301
- Table 97. NTB MMIO Map 303
- 4.0 Technologies 306
- 4.1.2 Intel 307
- VT-x Features 307
- 4.1.3 Intel 307
- VT-d Objectives 307
- 4.2 Intel 308
- 4.2.1 Intel 309
- QuickData Technology 309
- 4.4 Intel 311
- Turbo Boost Technology 311
- 5.0 IIO Ordering Model 312
- 5.2 Inbound Ordering Rules 313
- 5.3 Outbound Ordering Rules 315
- 5.4.1 Hinted Peer-to-Peer 317
- 5.4.2 Local Peer-to-Peer 317
- 5.5 Interrupt Ordering Rules 318
- 5.7 Intel 319
- VT-d Ordering Exceptions 319
- 6.0 System Address Map 320
- 6.1 Memory Address Space 321
- 6.1.2.1 VGA/SMM Memory Space 323
- 6.1.2.2 C/D/E/F Segments 323
- 6.1.3.1 Relocatable TSeg 324
- 6.1.6.2 MMIOL 325
- 6.1.6.3 I/OxAPIC Memory Space 325
- 6.1.6.4 HPET/Others 326
- 6.1.6.5 Local XAPIC 326
- 6.1.6.6 Firmware 326
- 6.1.7.1 High System Memory 327
- 6.1.7.2 Memory Mapped IO High 327
- 6.2 IO Address Space 328
- 6.4.1.1 General Overview 329
- 6.4.1.2 FWH Decoding 331
- 6.4.1.3 I/OxAPIC Decoding 331
- IIO Behavior 334
- 6.4.2.1 Overview 335
- Peer-to-Peer (DP System) 336
- 6.4.3 Intel 338
- 7.0 Interrupts 339
- 7.2.1 Integrated I/OxAPIC 340
- into the remapping table 343
- 7.3.1 Interrupt Remapping 344
- 7.5 Platform Interrupts 347
- 7.6 Interrupt Flow 347
- 7.6.2 MSI Interrupt 348
- 8.0 Power Management 349
- 8.1.5 PCIe Link States 351
- Technology 353
- Processor Package State 354
- Core 1 State 354
- Core 0 State 354
- C1E C6C3 355
- 8.2.4.1 Core C0 State 356
- 8.2.4.2 Core C1E State 356
- 8.2.4.3 Core C3 State 357
- 8.2.4.4 Core C6 State 357
- 8.2.4.5 C-State Auto-Demotion 357
- 8.2.5.1 Package C0 359
- 8.2.5.2 Package C1E 359
- 8.2.5.3 Package C3 State 359
- 8.2.5.4 Package C6 State 360
- 8.4.2 Support for P-States 365
- 8.4.3 S0 -> S1 Transition 365
- 8.4.4 S1 -> S0 Transition 366
- 8.5 PCIe Power Management 367
- 8.6 DMI Power Management 367
- 8.7 Intel 368
- QPI Power Management 368
- 8.8 Intel 368
- 9.0 Thermal Management 369
- 10.0 Reset 370
- 10.2 Node ID Configuration 371
- 10.3 CPU-Only Reset 372
- 10.4 Reset Timing Diagrams 373
- 11.1 IIO RAS Overview 375
- 11.2 System Level RAS 376
- 11.3 IIO Error Reporting 376
- 11.3.2 Inband Error Reporting 378
- Per PCI- E Specification 382
- IIO Global 382
- Error Registers 382
- IIO Local 382
- Intel® QPI 1 384
- Intel® QPI 1-2 Error 384
- IIO ERROR 386
- REPORTING 386
- 11.3.3.6 Error Containment 390
- 11.3.3.7 Error Counters 391
- 11.3.3.8 Stop on Error 391
- 11.5 PCI Express* RAS 392
- 11.5.3.3 Error Forwarding 393
- 11.5.3.4 Unconnected Ports 393
- 11.7 Hot Add/Remove Support 408
- 11.7.1 Hot Add/Remove Rules 409
- 11.7.2 PCIe Hot Plug 409
- (P2P bridge, HPC) 410
- Slot 3 Slot 4 410
- Slot Control 412
- Regi ster 412
- Slot Status 412
- Regi st er 412
- Slot Status Register 413
- Slot Control Register 413
- Deassert 413
- 11.7.2.4 Operation 414
- 11.7.2.5 Miscellaneous Notes 416
- 11.7.3 Intel 417
- QPI Hot Plug 417
- 12.1 Signal Descriptions 418
- 12.1.3 PCI Express* Signals 422
- 12.1.5 DMI / ESI Signals 423
- 12.1.6 Clock Signals 423
- 12.1.8 Thermal Signals 424
- Table 147. Reset Signals 426
- 12.1.12 ITP Signals 427
- 13.1 Processor Signaling 483
- 13.1.4 PCI Express/DMI 484
- 13.1.5 SMBus Interface 485
- 13.1.6 Clock Signals 486
- 13.1.8 Thermal 486
- 13.1.10 Power / Other Signals 486
- 13.1.10.3 Processor V 487
- 13.1.10.4 Processor V 494
- 13.2 Signal Group Summary 495
- QuickPath Interconnect Input 496
- 13.3 Mixing Processors 500
- Table 163. V 505
- Example Overshoot Waveform 507
- 13.6.2 Die Voltage Validation 508
- 14.0 Testability 515
- Test-Logic 516
- PROCESSOR 518
- 14.4 TAP Port Timings 520
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