nt!IopInitializeBootDrivers和ACPI!ACPIInitialize和pci!PciScanBus先后关系

kd> g
Breakpoint 1 hit
nt!IopInitializeBootDrivers:
80e68fc6 55 push ebp
1: kd> kc
#
00 nt!IopInitializeBootDrivers
01 nt!IoInitSystem
02 nt!Phase1Initialization
03 nt!PspSystemThreadStartup
04 nt!KiThreadStartup
1: kd> bl
0 e Disable Clear f73e2c3e [d:\srv03rtm\base\busdrv\pci\enum.c @ 2179] 0001 (0001) pci!PciScanBus
1 e Disable Clear 80e68fc6 [d:\srv03rtm\base\ntos\io\pnpmgr\pnpinit.c @ 1152] 0001 (0001) nt!IopInitializeBootDrivers
2 e Disable Clear f74541c8 [d:\srv03rtm\base\busdrv\acpi\driver\shared\acpiinit.c @ 82] 0001 (0001) ACPI!ACPIInitialize

1: kd> g
Breakpoint 2 hit
ACPI!ACPIInitialize:
f74541c8 55 push ebp
1: kd> kc
#
00 ACPI!ACPIInitialize
01 ACPI!ACPIInitStartACPI
02 ACPI!ACPIRootIrpStartDevice
03 ACPI!ACPIDispatchIrp
04 nt!IofCallDriver
05 nt!IopSynchronousCall
06 nt!IopStartDevice
07 nt!PipProcessStartPhase1
08 nt!PipProcessDevNodeTree
09 nt!PipDeviceActionWorker
0a nt!PipRequestDeviceAction
0b nt!IopInitializeBootDrivers
0c nt!IoInitSystem
0d nt!Phase1Initialization
0e nt!PspSystemThreadStartup
0f nt!KiThreadStartup
1: kd> g
Breakpoint 0 hit
pci!PciScanBus:
f73e2c3e 55 push ebp
0: kd> kc
#
00 pci!PciScanBus
01 pci!PciQueryDeviceRelations
02 pci!PciFdoIrpQueryDeviceRelations
03 pci!PciDispatchIrp
04 nt!IofCallDriver
05 nt!IopSynchronousCall
06 nt!IopQueryDeviceRelations
07 nt!PipEnumerateDevice
08 nt!PipProcessDevNodeTree
09 nt!PipDeviceActionWorker
0a nt!PipRequestDeviceAction
0b nt!IopInitializeBootDrivers
0c nt!IoInitSystem
0d nt!Phase1Initialization
0e nt!PspSystemThreadStartup
0f nt!KiThreadStartup
0: kd> dv
FdoExtension = 0x89df3ca8
secondary = 0x89 ''
slot = struct _PCI_SLOT_NUMBER
commonHeader = struct PCI_COMMON_HEADER [2]
newDevices = 0x00 ''
physicalDeviceObject = 0xffffffff
functionNumber = 0xf73e2c3f
hackFlags = 0xf789a2ac
deviceNumber = 0x804edc6c
maximumDevices = 0xf789adcc
isRoot = 0x00 ''
nshort = 0x30
capOffset = 0xa8 ''
cap = union _cap_buffer
0: kd> dx -r1 ((pci!_PCI_FDO_EXTENSION *)0x89df3ca8)
((pci!_PCI_FDO_EXTENSION *)0x89df3ca8) : 0x89df3ca8 [Type: _PCI_FDO_EXTENSION *]
[+0x000] List [Type: _SINGLE_LIST_ENTRY]
[+0x004] ExtensionType : PciFdoExtensionType (1768116273) [Type: PCI_SIGNATURE]
[+0x008] IrpDispatchTable : 0xf73d9398 [Type: _PCI_MJ_DISPATCH_TABLE *]
[+0x00c] DeviceState : 0x1 [Type: unsigned char]
[+0x00d] TentativeNextState : 0x5 [Type: unsigned char]
[+0x010] SecondaryExtMutex [Type: _FAST_MUTEX]
[+0x030] PhysicalDeviceObject : 0x89d37230 : Device for "\Driver\ACPI" [Type: _DEVICE_OBJECT *]
[+0x034] FunctionalDeviceObject : 0x89df3bf0 : Device for "\Driver\PCI" [Type: _DEVICE_OBJECT *]
[+0x038] AttachedDeviceObject : 0x89d37230 : Device for "\Driver\ACPI" [Type: _DEVICE_OBJECT *]
[+0x03c] ChildListMutex [Type: _FAST_MUTEX]
[+0x05c] ChildPdoList : 0x0 [Type: _PCI_PDO_EXTENSION *]
[+0x060] BusRootFdoExtension : 0x89df3ca8 [Type: _PCI_FDO_EXTENSION *]
[+0x064] ParentFdoExtension : 0x0 [Type: _PCI_FDO_EXTENSION *]
[+0x068] ChildBridgePdoList : 0x0 [Type: _PCI_PDO_EXTENSION *]
[+0x06c] PciBusInterface : 0x89d38600 [Type: _PCI_BUS_INTERFACE_STANDARD *]
[+0x070] MaxSubordinateBus : 0x7f [Type: unsigned char]
[+0x074] BusHandler : 0x0 [Type: _BUS_HANDLER *]
[+0x078] BaseBus : 0x0 [Type: unsigned char]
[+0x079] Fake : 0x0 [Type: unsigned char]
[+0x07a] Scanned : 0x0 [Type: unsigned char]
[+0x07b] ArbitersInitialized : 0x1 [Type: unsigned char]
[+0x07c] BrokenVideoHackApplied : 0x0 [Type: unsigned char]
[+0x07d] Hibernated : 0x0 [Type: unsigned char]
[+0x080] PowerState [Type: PCI_POWER_STATE]
[+0x0c0] SecondaryExtension [Type: _SINGLE_LIST_ENTRY]
[+0x0c4] ChildWaitWakeCount : 0x0 [Type: unsigned long]
[+0x0c8] IchHackConfig : 0x0 [Type: _PCI_COMMON_CONFIG *]
[+0x0cc] Lock [Type: _PCI_LOCK]
[+0x0dc] HotPlugParameters [Type: __unnamed]
[+0x0e4] BusHackFlags : 0x0 [Type: unsigned long]
0: kd> !devobj 0x89d37230
Device object (89d37230) is for:
0000002e \Driver\ACPI DriverObject 89db5f38
Current Irp 00000000 RefCount 0 Type 00000032 Flags 00001040
SecurityDescriptor e129bf70 DevExt 89db4008 DevObjExt 89d372e8 DevNode 89df32f0
ExtensionFlags (0000000000)
Characteristics (0x00000080) FILE_AUTOGENERATED_DEVICE_NAME
AttachedDevice (Upper) 89df3bf0 \Driver\PCI
Device queue is not busy.
0: kd> !drvobj 89db5f38
Driver object (89db5f38) is for:
\Driver\ACPI

Driver Extension List: (id , addr)

Device Object list:
89dc7a68 89db9f18 89d38658 89d37d28
89d37230 89df37d8

0: kd> bl
0 e Disable Clear f73e2c3e [d:\srv03rtm\base\busdrv\pci\enum.c @ 2179] 0001 (0001) pci!PciScanBus
1 e Disable Clear 80e68fc6 [d:\srv03rtm\base\ntos\io\pnpmgr\pnpinit.c @ 1152] 0001 (0001) nt!IopInitializeBootDrivers
2 e Disable Clear f74541c8 [d:\srv03rtm\base\busdrv\acpi\driver\shared\acpiinit.c @ 82] 0001 (0001) ACPI!ACPIInitialize

0: kd> !devnode 0 1
Dumping IopRootDeviceNode (= 0x89db9ac0)
DevNode 0x89db9ac0 for PDO 0x89db9c00
InstancePath is "HTREE\ROOT\0"
State = DeviceNodeStarted (0x308)
Previous State = DeviceNodeEnumerateCompletion (0x30d)
DevNode 0x89df8008 for PDO 0x89db98a0
InstancePath is "Root\ACPI_HAL\0000"
State = DeviceNodeStarted (0x308)
Previous State = DeviceNodeEnumerateCompletion (0x30d)
DevNode 0x89db5008 for PDO 0x89df5278
InstancePath is "ACPI_HAL\PNP0C08\0"
ServiceName is "ACPI"
State = DeviceNodeStarted (0x308)
Previous State = DeviceNodeEnumerateCompletion (0x30d)
DevNode 0x89df32f0 for PDO 0x89d37230
InstancePath is "ACPI\PNP0A03\2&daba3ff&0"
ServiceName is "pci"
State = DeviceNodeStarted (0x308)
Previous State = DeviceNodeStartPostWork (0x307)
DevNode 0x89df9530 for PDO 0x89d37d28
InstancePath is "ACPI\ACPI0003\1"
ServiceName is "CmBatt"
State = DeviceNodeInitialized (0x302)
Previous State = DeviceNodeUninitialized (0x301)
DevNode 0x89db3008 for PDO 0x89d38658
InstancePath is "ACPI\GenuineIntel_-_x86_Family_6_Model_14\_0"
ServiceName is "Processor"
State = DeviceNodeInitialized (0x302)
Previous State = DeviceNodeUninitialized (0x301)
DevNode 0x89d393f8 for PDO 0x89db9f18
InstancePath is "ACPI\GenuineIntel_-_x86_Family_6_Model_14\_1"
ServiceName is "Processor"
State = DeviceNodeInitialized (0x302)
Previous State = DeviceNodeUninitialized (0x301)
DevNode 0x89d37ee0 for PDO 0x89dc7a68
InstancePath is "ACPI\FixedButton\2&daba3ff&0"
State = DeviceNodeStarted (0x308)
Previous State = DeviceNodeEnumerateCompletion (0x30d)
DevNode 0x89df8c98 for PDO 0x89df8df0
InstancePath is "Root\COMPOSITE_BATTERY\0000"
ServiceName is "Compbatt"
State = DeviceNodeInitialized (0x302)
Previous State = DeviceNodeUninitialized (0x301)
DevNode 0x89df8a48 for PDO 0x89df8ba0
InstancePath is "Root\dmio\0000"
ServiceName is "dmio"
State = DeviceNodeInitialized (0x302)
Previous State = DeviceNodeUninitialized (0x301)