Advanced Configuration and Power Interface Specification Hewlett-Packard Corporation
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Contents1 Introduction 21 1.1 Principal Goals 21 1.2 Power Management Rationale 22 1.3 Legacy Support 23 1.4 OEM Implementation Strategy 23 1.5 Power and Sleep Buttons 23 1.6 ACPI Specification and the Structure Of ACPI 23 1.7 OS and Platform Compliance 25 1.7.1 Platform Implementations of ACPI-defined Interfaces 25 1.7.2 OSPM Implementations 28 1.7.3 OS Requirements 29 1.8 Target Audience 29 1.9 Document Organization 29 1.9.1 ACPI Introduction and Overview 30 1.9.2 Programming Models 30 1.9.3 Implementation Details 30 2 Technical Reference 31
4.2.1 Power Button 47 4.2.2 Platform Power Management Characteristics 47
4.3.1 Power Management Standards 48 4.3.2 Device Power States 48 4.3.3 Device Power State Definitions 49 4.4 Controlling Device Power 49 4.4.1 Getting Device Power Capabilities 49 4.4.2 Setting Device Power States 50 4.4.3 Getting Device Power Status 50 4.4.4 Waking the Computer 50 4.4.5 Example: Modem Device Power Management 52 4.5 Processor Power Management 54 4.6 Device and Processor Performance States 55 4.7 Configuration and “Plug and Play” 55 4.7.1 Device Configuration Example: Configuring the Modem 56 4.7.2 NUMA Nodes 56
4.9.1 Battery Communications 57 4.9.2 Battery Capacity 57 4.9.3 Battery Gas Gauge 58 4.9.4 Low Battery Levels 58 4.9.5 Battery Calibration 60 4.10 Thermal Management 61 4.10.1 Active and Passive Cooling Modes 62 4.10.2 Performance vs. Energy Conservation 62 4.10.3 Acoustics (Noise) 62 4.10.4 Multiple Thermal Zones 62
5.1.1 Functional Fixed Hardware 63 5.2 Generic Hardware Programming Model 64 5.3 Diagram Legends 66 5.4 Register Bit Notation 67 5.5 The ACPI Hardware Model 67 5.5.1 Hardware Reserved Bits 70 5.5.2 Hardware Ignored Bits 71 5.5.3 Hardware Write-Only Bits 71 5.5.4 Cross Device Dependencies 71
5.7.1 ACPI Register Summary 76 5.7.2 Fixed Hardware Features 78 5.7.3 Fixed Hardware Registers 87 5.7.4 Generic Hardware Registers 94
6.1.1 Address Space Translation 105 6.2 ACPI System Description Tables 106 6.2.1 Reserved Bits and Fields 106 6.2.2 Compatibility 107 6.2.3 Address Format 107 6.2.4 Universal Uniform Identifiers (UUID) 108 6.2.5 Root System Description Pointer (RSDP) 108 6.2.6 System Description Table Header 110 6.2.7 Root System Description Table (RSDT) 113 6.2.8 Extended System Description Table (XSDT) 113 6.2.9 Fixed ACPI Description Table (FADT) 114 6.2.10 Firmware ACPI Control Structure (FACS) 125 6.2.11 Definition Blocks 131 6.2.12 Multiple APIC Description Table (MADT) 134 6.2.13 Global System Interrupts 145 6.2.14 Smart Battery Table (SBST) 146 6.2.15 Embedded Controller Boot Resources Table (ECDT) 146 6.2.16 System Resource Affinity Table (SRAT) 148 6.2.17 System Locality Distance Information Table (SLIT) 151 6.2.18 Corrected Platform Error Polling Table (CPEP) 153 6.2.19 Maximum System Characteristics Table (MSCT) 154 6.3 ACPI Namespace 157 Except for names preceded with a ‘\’, the current namespace determines where in the namespace hierarchy a name being created goes and where a name being referenced is found. A name is located by finding the matching name in the current namespace, and then in the parent namespace. If the parent namespace does not contain the name, the search continues recursively upwards until either the name is found or the namespace does not have a parent (the root of the namespace). This indicates that the name is not found. 157 An attempt to access names in the parent of the root will result in the name not being found. 157 6.3.1 Predefined Root Namespaces 158 6.3.2 Objects 159
6.5.1 ASL Statements 161 6.5.2 Control Method Execution 161 The object \XYZ.BAR is a static object created when the table that contains the above ASL is loaded. The object \XYZ.FOO.BAR is a dynamic object that is created when the Name (BAR, 7) statement in the FOO method is executed. The object \XYZ.FOOB is a dynamic object created by the \XYZ.FOO method when the Name (\XYZ.FOOB, 3) statement is executed. Notice that the \XYZ.FOOB object is destroyed after the \XYZ.FOO method exits. 163 6.6 ACPI Event Programming Model 169 6.6.1 ACPI Event Programming Model Components 169 6.6.2 Types of ACPI Events 170 6.6.3 Fixed Event Handling 171 6.6.5 General-Purpose Event Handling 172 6.6.6 Device Object Notifications 175 6.6.7 Device Class-Specific Objects 180 6.6.8 Predefined ACPI Names for Objects, Methods, and Resources 183 6.7 Predefined Objects 191 6.7.1 \_GL (Global Lock Mutex) 191 6.7.2 \_OSI (Operating System Interfaces) 191 6.7.3 \_OS (OS Name Object) 194 6.7.4 \_REV (Revision Data Object) 195
6.8.1 _PIC Method 195 7 Device Configuration 196 7.1 Device Identification Objects 196 7.1.1 _ADR (Address) 197 7.1.2 _CID (Compatible ID) 198 7.1.3 _DDN (DOS Device Name) 198 7.1.4 _HID (Hardware ID) 199 7.1.5 _MLS (Multiple Language String) 199 7.1.6 _PLD (Physical Device Location) 200 7.1.7 _STR (String) 206 7.1.8 _SUN (Slot User Number) 207 7.1.9 _UID (Unique ID) 207 7.2 Device Configuration Objects 207 7.2.1 _CDM (Clock Domain) 208 7.2.2 _CRS (Current Resource Settings) 209 7.2.3 _DIS (Disable) 209 7.2.4 _DMA (Direct Memory Access) 209 7.2.5 _FIX (Fixed Register Resource Provider) 212 7.2.6 _GSB (Global System Interrupt Base) 213 7.2.7 _HPP (Hot Plug Parameters) 214 7.2.8 _HPX (Hot Plug Parameter Extensions) 216 7.2.9 _MAT (Multiple APIC Table Entry) 221 7.2.10 _OSC (Operating System Capabilities) 222 7.2.11 _PRS (Possible Resource Settings) 232 7.2.12 _PRT (PCI Routing Table) 232 7.2.13 _PXM (Proximity) 234 7.2.14 _SLI (System Locality Information) 235 7.2.15 _SRS (Set Resource Settings) 239 7.3 Device Insertion, Removal, and Status Objects 239 7.3.1 _EDL (Eject Device List) 241 7.3.2 _EJD (Ejection Dependent Device) 241 7.3.3 _EJx (Eject) 243 7.3.4 _LCK (Lock) 243 7.3.5 _OST (OSPM Status Indication) 244 7.3.6 _RMV (Remove) 248 7.3.7 _STA (Status) 248 7.4 Resource Data Types for ACPI 249 7.4.1 ASL Macros for Resource Descriptors 249 7.4.2 Small Resource Data Type 249 7.4.3 Large Resource Data Type 254 7.5 Other Objects and Control Methods 276 7.5.1 _INI (Init) 276 7.5.2 _DCK (Dock) 277 7.5.3 _BDN (BIOS Dock Name) 277 7.5.4 _REG (Region) 277 7.5.5 _BBN (Base Bus Number) 279 7.5.6 _SEG (Segment) 279 7.5.7 _GLK (Global Lock) 281 8 Power and Performance Management 283 8.1 Declaring a Power Resource Object 283 8.1.1 Defined Child Objects for a Power Resource 284 8.1.2 _OFF 284 8.1.3 _ON 284 8.1.4 _STA (Status) 285
8.2.1 _DSW (Device Sleep Wake) 287 8.2.2 _PS0 (Power State 0) 287 8.2.3 _PS1 (Power State 1) 287 8.2.4 _PS2 (Power State 2) 288 8.2.5 _PS3 (Power State 3) 288 8.2.6 _PSC (Power State Current) 288 8.2.7 _PR0 (Power Resources for D0) 288 8.2.8 _PR1 (Power Resources for D1) 289 8.2.9 _PR2 (Power Resources for D2) 289 8.2.10 _PR3 (Power Resources for D3hot) 290 8.2.11 _PRW (Power Resources for Wake) 290 8.2.12 _PSW (Power State Wake) 291 8.2.13 _IRC (In Rush Current) 291 8.2.14 _S1D (S1 Device State) 292 8.2.15 _S2D (S2 Device State) 292 8.2.16 _S3D (S3 Device State) 293 8.2.17 _S4D (S4 Device State) 294 8.2.18 _S0W (S0 Device Wake State) 294 8.2.19 _S1W (S1 Device Wake State) 294 8.2.20 _S2W (S2 Device Wake State) 295 8.2.21 _S3W (S3 Device Wake State) 295 8.2.22 _S4W (S4 Device Wake State) 295
8.3.1 \_BFS (Back From Sleep) 296 8.3.2 \_PTS (Prepare To Sleep) 296 8.3.3 \_GTS (Going To Sleep) 297 8.3.4 System \_Sx states 297 8.3.5 _SWS (System Wake Source) 301 8.3.6 \_TTS (Transition To State) 302 8.3.7 \_WAK (System Wake) 302 8.4 OSPM usage of _GTS, _PTS, _TTS, _WAK, and _BFS 303 9 Processor Configuration and Control 306 9.1 Processor Power States 306 9.1.1 Processor Power State C0 308 9.1.2 Processor Power State C1 310 9.1.3 Processor Power State C2 310 9.1.4 Processor Power State C3 310 9.1.5 Additional Processor Power States 311 9.2 Flushing Caches 311 9.3 Power, Performance, and Throttling State Dependencies 312 9.4 Declaring Processors 312 9.4.1 _PDC (Processor Driver Capabilities) 313 9.4.2 Processor Power State Control 314 9.4.3 Processor Throttling Controls 319 9.4.4 Processor Performance Control 325 9.4.5 _PPE (Polling for Platform Errors) 332 9.5 Processor Aggregator Device 332 9.5.1 Logical Processor Idling 332 10 ACPI-Defined Devices and Device Specific Objects 334 10.1 \_SI System Indicators 334 10.1.1 _SST (System Status) 334 10.1.2 _MSG (Message) 334 10.1.3 _BLT (Battery Level Threshold) 334 10.2 Ambient Light Sensor Device 335 10.2.1 Overview 335 10.2.2 _ALI (Ambient Light Illuminance) 336 10.2.3 _ALT (Ambient Light Temperature) 336 10.2.4 _ALC (Ambient Light Color Chromaticity) 337 10.2.5 _ALR (Ambient Light Response) 337 10.2.6 _ALP (Ambient Light Polling) 341 10.2.7 Ambient Light Sensor Events 341 10.2.8 Relationship to Backlight Control Methods 341
10.4.1 _LID 342 10.5 Control Method Power and Sleep Button Devices 342 10.6 Embedded Controller Device 343 10.7 Generic Container Device 343 10.8 ATA Controller Devices 343 10.8.1 Objects for Both ATA and SATA Controllers 344 10.8.2 IDE Controller Device 345 10.8.3 Serial ATA (SATA) Controller Device 347 10.9 Floppy Controller Device Objects 349 10.9.1 _FDE (Floppy Disk Enumerate) 349 10.9.2 _FDI (Floppy Disk Information) 350 10.9.3 _FDM (Floppy Disk Drive Mode) 351 10.10 GPE Block Device 351 10.10.1 Matching Control Methods for General-Purpose Events in a GPE Block Device 352 10.11 Module Device 352 10.11.1 Describing PCI Bus and Segment Group Numbers under Module Devices 354 10.12 Memory Devices 356 10.12.1 Address Decoding 357 10.12.2 Memory Bandwidth Monitoring and Reporting 357 10.12.3 _OSC Definition for Memory Device 359 10.12.4 Example: Memory Device 359
10.13.1 USB 2.0 Host Controllers and _UPC and _PLD 364 10.14 Device Object Name Collision 365 10.14.1 _DSM (Device Specific Method) 365 10.15 PC/AT RTC/CMOS Devices 368 10.15.1 PC/AT-compatible RTC/CMOS Devices (PNP0B00) 368 10.15.2 Intel PIIX4-compatible RTC/CMOS Devices (PNP0B01) 369 10.15.3 Dallas Semiconductor-compatible RTC/CMOS Devices (PNP0B02) 370 10.16 User Presence Detection Device 370 10.16.1 _UPD (User Presence Detect) 371 10.16.2 _UPP (User Presence Polling) 371 10.16.3 User Presence Sensor Events 371 10.17 I/O APIC Device 371 10.18 Wake Alarm Device 372 10.18.1 Overview 372 10.18.2 _STP (Set Expired Timer Wake Policy) 374 10.18.3 _STV (Set Timer Value) 375 10.18.4 _TIP (Expired Timer Wake Policy) 375 10.18.5 _TIV (Timer Values) 375 10.18.6 ACPI Wakeup Alarm Events 375 10.18.7 Relationship to Real Time Clock Alarm 375 10.18.8 Example ASL code 376
11.1.1 ACPI Smart Battery Status Change Notification Requirements 381 11.1.2 Smart Battery Objects 382 11.1.3 _SBS (Smart Battery Subsystem) 382 11.2 Control Method Batteries 385 11.2.1 Battery Events 385 11.2.2 Battery Control Methods 386
11.3.1 _PSR (Power Source) 398 11.3.2 _PCL (Power Consumer List) 399 11.3.3 _PIF (Power Source Information) 399 11.3.4 _PRL (Power Source Redundancy List) 400
11.4.1 _PMC (Power Meter Capabilities) 400 11.4.2 _PTP (Power Trip Points) 402 11.4.3 _PMM (Power Meter Measurement) 403 11.4.4 _PAI (Power Averaging Interval) 403 11.4.5 _GAI (Get Averaging Interval) 403 11.4.6 _SHL (Set Hardware Limit) 404 11.4.7 _GHL (Get Hardware Limit) 404 11.4.8 _PMD (Power Metered Devices) 404
13.1.1 Active, Passive, and Critical Policies 408 13.1.2 Dynamically Changing Cooling Temperature Trip Points 409 13.1.3 Detecting Temperature Changes 410 13.1.4 Active Cooling 412 13.1.5 Passive Cooling 412 13.1.6 Critical Shutdown 414
13.2.1 Evaluating Thermal Device Lists 416 13.2.2 Evaluating Device Thermal Relationship Information 416 13.2.3 Fan Device Notifications 417 13.3 Fan Device 417 13.3.1 Fan Objects 417 13.4 Thermal Objects 420 13.4.1 _ACx (Active Cooling) 421 13.4.2 _ALx (Active List) 422 13.4.3 _ART (Active Cooling Relationship Table) 422 13.4.4 _CRT (Critical Temperature) 425 13.4.5 _DTI (Device Temperature Indication) 425 13.4.6 _HOT (Hot Temperature) 425 13.4.7 _NTT (Notification Temperature Threshold) 425 13.4.8 _PSL (Passive List) 426 13.4.9 _PSV (Passive) 426 13.4.10 _RTV (Relative Temperature Values) 426 13.4.11 _SCP (Set Cooling Policy) 427 13.4.12 _TC1 (Thermal Constant 1) 429 13.4.13 _TC2 (Thermal Constant 2) 429 13.4.14 _TMP (Temperature) 430 13.4.15 _TPT (Trip Point Temperature) 430 13.4.16 _TRT (Thermal Relationship Table) 430 13.4.17 _TSP (Thermal Sampling Period) 431 13.4.18 _TST (Temperature Sensor Threshold) 431 13.4.19 _TZD (Thermal Zone Devices) 432 13.4.20 _TZM (Thermal Zone Member) 432 13.4.21 _TZP (Thermal Zone Polling) 432 13.5 Native OS Device Driver Thermal Interfaces 433 13.6 Thermal Zone Interface Requirements 433 13.7 Thermal Zone Examples 434 13.7.1 Example: The Basic Thermal Zone 434 13.7.2 Example: Multiple-Speed Fans 435 13.7.3 Example: Thermal Zone with Multiple Devices 436 14 ACPI Embedded Controller Interface Specification 442 14.1 Embedded Controller Interface Description 442 14.2 Embedded Controller Register Descriptions 445 14.2.1 Embedded Controller Status, EC_SC (R) 445 14.2.2 Embedded Controller Command, EC_SC (W) 446 14.2.3 Embedded Controller Data, EC_DATA (R/W) 446 14.3 Embedded Controller Command Set 446 14.3.1 Read Embedded Controller, RD_EC (0x80) 447 14.3.2 Write Embedded Controller, WR_EC (0x81) 447 14.3.3 Burst Enable Embedded Controller, BE_EC (0x82) 447 14.3.4 Burst Disable Embedded Controller, BD_EC (0x83) 448 14.3.5 Query Embedded Controller, QR_EC (0x84) 448 14.4 SMBus Host Controller Notification Header (Optional), OS_SMB_EVT 448 14.5 Embedded Controller Firmware 448 14.6 Interrupt Model 449 14.6.1 Event Interrupt Model 449 14.6.2 Command Interrupt Model 450
14.9.1 Register Description 451 This register determines the type of SMBus transaction generated on the SMBus. In addition to indicating the protocol type to the SMB-HC, a write to this register initiates the transaction on the SMBus. Notice that bit 7 of the protocol value is used to indicate whether packet error checking should be employed. A value of 1 (one) in this bit indicates that PEC format should be used for the specified protocol, and a value of 0 (zero) indicates the standard (non-PEC) format should be used. 452 14.9.2 Protocol Description 455 14.9.3 SMBus Register Set 458
14.10.1 SMBus Device Access Restrictions 460 14.10.2 SMBus Device Command Access Restriction 460
14.11.1 Example: EC Definition ASL Code 461 14.12 Defining an EC SMBus Host Controller in ACPI Namespace 461 14.12.1 Example: EC SMBus Host Controller ASL-Code 462 15 ACPI System Management Bus Interface Specification 462 15.1 SMBus Overview 463 15.1.1 SMBus Slave Addresses 463 15.1.2 SMBus Protocols 463 15.1.3 SMBus Status Codes 464 15.1.4 SMBus Command Values 464
15.2.1 Declaring SMBus Host Controller Objects 464 15.2.2 Declaring SMBus Devices 465 15.2.3 Declaring SMBus Operation Regions 465 15.2.4 Declaring SMBus Fields 466 15.2.5 Declaring and Using an SMBus Data Buffer 468 15.3 Using the SMBus Protocols 469 15.3.1 Read/Write Quick (SMBQuick) 469 15.3.2 Send/Receive Byte (SMBSendReceive) 470 15.3.3 Read/Write Byte (SMBByte) 470 15.3.4 Read/Write Word (SMBWord) 471 15.3.5 Read/Write Block (SMBBlock) 472 15.3.6 Word Process Call (SMBProcessCall) 472 15.3.7 Block Process Call (SMBBlockProcessCall) 473 16 System Address Map Interfaces 474 16.1 INT 15H, E820H - Query System Address Map 475 16.2 E820 Assumptions and Limitations 477 16.3 UEFI GetMemoryMap() Boot Services Function 477 16.4 UEFI Assumptions and Limitations 478 16.5 Example Address Map 479 16.6 Example: Operating System Usage 479 17 Waking and Sleeping 482 17.1 Sleeping States 483 17.1.1 S1 Sleeping State 485 17.1.2 S2 Sleeping State 485 17.1.3 S3 Sleeping State 486 17.1.4 S4 Sleeping State 486 17.1.5 S5 Soft Off State 487 17.1.6 Transitioning from the Working to the Sleeping State 488 17.1.7 Transitioning from the Working to the Soft Off State 488 17.2 Flushing Caches 488 17.3 Initialization 489 17.3.1 Placing the System in ACPI Mode 491 17.3.2 BIOS Initialization of Memory 492 17.3.3 OS Loading 494 17.3.4 Exiting ACPI Mode 495
18.2.1 System Resource Affinity Table Definition 496 18.3 System Locality Distance Information 497 19 ACPI Platform Error Interfaces (APEI) 499 19.1 Hardware Errors and Error Sources 499 19.2 Relationship between OSPM and System Firmware 500 19.3 Error Source Discovery 500 19.3.1 Boot Error Source 500 19.3.2 ACPI Error Source 502
19.4.1 Example: Firmware First Handling Using NMI Notification 515 19.5 Error Serialization 515 19.5.1 Serialization Action Table 516 19.5.2 Operations 522
19.6.1 Error Injection Table (EINJ) 526 19.6.2 Injection Instruction Entries 528 19.6.3 Injection Instructions 529 19.6.4 Trigger Action Table 530 19.6.5 Error Injection Operation 530 Directory: DOWNLOADS DOWNLOADS -> Northern England’s set-jetting locations DOWNLOADS -> Dynatest 3031 lwd light Weight Deflectometer DOWNLOADS -> Forth coming competitive exams DOWNLOADS -> Brush High School Morning Announcements Friday, September 05, 2014 all school DOWNLOADS -> Year 9 The Arts — Music DOWNLOADS -> Years 7 and 8 standard elaborations — Australian Curriculum: Music draft DOWNLOADS -> Chris Young sets 2016 “I’m Comin’ Over” Tour headlining dates DOWNLOADS -> Slavery and Abolition: the Plymouth Connection Introduction DOWNLOADS -> Summer Assignment Download 7.02 Mb. Share with your friends:
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