ACPI!PciConfigSpaceHandler到ACPI!PciConfigSpaceHandlerWorker到ACPI!GetPciAddress
ACPI!GetPciAddress函数较复杂，可以单独研究。
ACPI!PciConfigSpaceHandlerWorker+0xcf
ACPI!PciConfigSpaceHandlerWorker+0xd4
1: kd> kc
#
00 ACPI!PciConfigSpaceHandler
01 ACPI!InternalOpRegionHandler
02 ACPI!WriteCookAccess
03 ACPI!RunContext
04 ACPI!InsertReadyQueue
05 ACPI!RestartCtxtPassive
06 ACPI!ACPIWorker
07 nt!PspSystemThreadStartup
08 nt!KiThreadStartup
1: kd> dv
AccessType = 1
OpRegion = 0x899b0b50
Address = 0xd8
Size = 4
Data = 0x8997dc28
Context = 0
CompletionHandler = 0xf7420914
CompletionContext = 0x8997c0ac
1: kd> t
Breakpoint 48 hit
eax=899affac ebx=00008000 ecx=8997c0ac edx=89987378 esi=899affac edi=899873b4
eip=f740d62c esp=f791ac74 ebp=f791ac8c iopl=0 nv up ei ng nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000286
ACPI!PciConfigSpaceHandlerWorker:
f740d62c 55 push ebp
1: kd> kc
#
00 ACPI!PciConfigSpaceHandlerWorker
01 ACPI!PciConfigSpaceHandler
02 ACPI!InternalOpRegionHandler
03 ACPI!WriteCookAccess
04 ACPI!RunContext
05 ACPI!InsertReadyQueue
06 ACPI!RestartCtxtPassive
07 ACPI!ACPIWorker
08 nt!PspSystemThreadStartup
09 nt!KiThreadStartup
1: kd> dv
AcpiObject = 0x899affac
CompletionStatus = 0n0
Result = 0x00000000
Context = 0x89987378
1: kd> dt PCI_CONFIG_STATE 0x89987378
ACPI!PCI_CONFIG_STATE
+0x000 AccessType : 1
+0x004 OpRegion : 0x899b0b50 _NSObj
+0x008 Address : 0xd8
+0x00c Size : 4
+0x010 Data : 0x8997dc28 -> 0x40e98102
+0x014 Context : 0
+0x018 CompletionHandler : 0xf7420914 Void
+0x01c CompletionContext : 0x8997c0ac Void
+0x020 PciObj : 0x899affac _NSObj
+0x024 ParentObj : (null)
+0x028 CompletionHandlerType : 0
+0x02c Flags : 0
+0x030 RunCompletion : 0n-1
+0x034 Slot : _PCI_SLOT_NUMBER
+0x038 Bus : 0 ''
+0x039 IsPciDeviceResult : 0 ''
1: kd> u 0xf7420914
ACPI!RestartCtxtCallback [d:\srv03rtm\base\busdrv\acpi\driver\amlinew\sched.c @ 401]:
f7420914 55 push ebp
f7420915 8bec mov ebp,esp
f7420917 56 push esi
f7420918 8b7508 mov esi,dword ptr [ebp+8]
f742091b 57 push edi
f742091c 6a01 push 1
f742091e bf603f43f7 mov edi,offset ACPI!`string' (f7433f60)
f7420923 57 push edi
1: kd> dt _ctxt 0x8997c0ac-ac
ACPI!_ctxt
+0x000 dwSig : 0x54585443
+0x004 pbCtxtEnd : 0x8997e000 "TSER"
+0x008 listCtxt : _List
+0x010 listQueue : _List
+0x018 pplistCtxtQueue : (null)
+0x01c plistResources : 0x8997c198 _List
+0x020 dwfCtxt : 0x130
+0x024 pnsObj : 0x899b4938 _NSObj
+0x028 pnsScope : 0x899b40ac _NSObj
+0x02c powner : 0x8997c1ac _objowner
+0x030 pcall : 0x8997dd18 _call
+0x034 pnctxt : (null)
+0x038 dwSyncLevel : 0xf
+0x03c pbOp : 0x899b4122 ""
+0x040 Result : _ObjData
+0x054 pfnAsyncCallBack : 0xf7407364 void ACPI!ACPIGetWorkerForInteger+0
+0x058 pdataCallBack : 0x899c634c _ObjData
+0x05c pvContext : 0x899c6320 Void
+0x060 Timer : _KTIMER
+0x088 Dpc : _KDPC
+0x0a8 pheapCurrent : 0x8997c0bc _heap
+0x0ac CtxtData : _ctxtdata
+0x0bc LocalHeap : _heap
if (!state->OpRegion->Context) { 不符合条件
state->PciObj = (PNSOBJ)state->OpRegion->Context;
pciDeviceFilter = (PDEVICE_EXTENSION)state->PciObj->Context;
if (pciDeviceFilter == NULL) { 不符合条件 eax=899c0d58
1: kd> p
eax=899c0d58 ebx=89987378 ecx=899873a8 edx=899b0b50 esi=00000103 edi=899b0b80
eip=f740d6a1 esp=f791ac20 ebp=f791ac70 iopl=0 nv up ei ng nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000286
ACPI!PciConfigSpaceHandlerWorker+0x75:
f740d6a1 85c0 test eax,eax
//
// If interface is non-zero, we have enumerated this PCI
// device. So use the PCI driver to do config ops.
// If it is zero, make some attempt to figure out what
// device this request is for. The result will be
// used in calls to the HAL.
//如果接口非零，则表示我们已经枚举了此PCI设备。因此，使用PCI驱动程序进行配置操作。
//
如果值为零，请尝试确定此请求针对的是哪个设备。该结果将用于对HAL的调用。
if (!interface) {
if (!(state->Flags & PCISUPP_GOT_SLOT_INFO)) {
state->Flags |= PCISUPP_GOT_SLOT_INFO;
status = GetPciAddress(state->PciObj,
PciConfigSpaceHandlerWorker,
(PVOID)state,
&state->Bus,
&state->Slot);
1: kd> p
eax=899873b0 ebx=89987378 ecx=00000100 edx=899b0b50 esi=00000103 edi=00000000
eip=f740d6fb esp=f791ac0c ebp=f791ac70 iopl=0 nv up ei pl nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000206
ACPI!PciConfigSpaceHandlerWorker+0xcf:
f740d6fb e838fcffff call ACPI!GetPciAddress (f740d338)
1: kd> bp f740d6fb
49 e Disable Clear f740d6fb 0001 (0001) ACPI!PciConfigSpaceHandlerWorker+0xcf
这个断点下面会用到好多次
ACPI!PciConfigSpaceHandlerWorker+0xcf
1: kd> t
eax=899873b0 ebx=89987378 ecx=00000100 edx=899b0b50 esi=00000103 edi=00000000
eip=f740d338 esp=f791ac08 ebp=f791ac70 iopl=0 nv up ei pl nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000206
ACPI!GetPciAddress:
f740d338 55 push ebp
1: kd> kc
#
00 ACPI!GetPciAddress
01 ACPI!PciConfigSpaceHandlerWorker
02 ACPI!PciConfigSpaceHandler
03 ACPI!InternalOpRegionHandler
04 ACPI!WriteCookAccess
05 ACPI!RunContext
06 ACPI!InsertReadyQueue
07 ACPI!RestartCtxtPassive
08 ACPI!ACPIWorker
09 nt!PspSystemThreadStartup
0a nt!KiThreadStartup
1: kd> dv
PciObj = 0x899affac
CompletionRoutine = 0xf740d62c
Context = 0x89987378
Bus = 0x899873b0 ""
Slot = 0x899873ac
1: kd> kv
# ChildEBP RetAddr Args to Child
00 f791ac04 f740d700 899affac f740d62c 89987378 ACPI!GetPciAddress (FPO: [Non-Fpo]) (CONV: stdcall) [d:\srv03rtm\base\busdrv\acpi\driver\nt\pciopregion.c @ 951]
01 f791ac70 f740d9dd 899affac 00000000 00000000 ACPI!PciConfigSpaceHandlerWorker+0xd4 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\nt\pciopregion.c @ 654]
02 f791ac8c f742813d 00000001 899b0b50 000000d8 ACPI!PciConfigSpaceHandler+0x6d (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\nt\pciopregion.c @ 424]
03 f791acbc f7417e5f 00000001 899b0b50 000000d8 ACPI!InternalOpRegionHandler+0x67 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\shared\acpioprg.c @ 160]
04 f791acf4 f741d832 8997c000 8997dc08 00000000 ACPI!WriteCookAccess+0x242 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\amlinew\object.c @ 1437]
05 f791ad1c f7420671 00000000 4556414c 8997c000 ACPI!RunContext+0x122 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\amlinew\ctxt.c @ 588]
06 f791ad44 f742079a 8997c000 00000000 f743a948 ACPI!InsertReadyQueue+0x155 (FPO: [Non-Fpo]) (CONV: cdecl) [d:\srv03rtm\base\busdrv\acpi\driver\amlinew\sched.c @ 275]
07 f791ad64 f74133c5 899050e8 00000000 89981ca0 ACPI!RestartCtxtPassive+0x54 (FPO: [Non-Fpo]) (CONV: stdcall) [d:\srv03rtm\base\busdrv\acpi\driver\amlinew\sched.c @ 384]
08 f791adac 80d391f0 00000000 00000000 00000000 ACPI!ACPIWorker+0xbf (FPO: [Non-Fpo]) (CONV: stdcall) [d:\srv03rtm\base\busdrv\acpi\driver\nt\worker.c @ 302]
09 f791addc 80b00d52 f7413306 00000000 00000000 nt!PspSystemThreadStartup+0x2e (FPO: [Non-Fpo]) (CONV: stdcall) [d:\srv03rtm\base\ntos\ps\create.c @ 2213]
0a 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 [d:\srv03rtm\base\ntos\ke\i386\threadbg.asm @ 81]
1: kd> bp f740d700
返回地址加上断点：
50 e Disable Clear f740d700 0001 (0001) ACPI!PciConfigSpaceHandlerWorker+0xd4
