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得到节点Device (P2P0)的子节点Device (S1F0)的PCI地址

news 2026/3/26 22:24:55

第0部分：

dsdt.dsl:6096: Device (P2P0)
dsdt.dsl:6306: Device (S1F0)

Device (S1F0)
{
Name (_ADR, Zero) // _ADR: Address
Name (_SUN, 0x20) // _SUN: Slot User Number
OperationRegion (REGS, PCI_Config, 0x00, 0x04)
Field (REGS, DWordAcc, NoLock, Preserve)
{
ID, 32
}

Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (BSTA (ID))
}

Device (S2F0)
{
Name (_ADR, 0x00010000) // _ADR: Address
Name (_SUN, 0x21) // _SUN: Slot User Number

第一部分：

NTSTATUS
EXPORT
PciConfigSpaceHandlerWorker(
IN PNSOBJ AcpiObject,
IN NTSTATUS CompletionStatus,
IN POBJDATA Result,
IN PVOID Context
)
{

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> kc
#
00 ACPI!GetPciAddress
01 ACPI!PciConfigSpaceHandlerWorker
02 ACPI!GetOpRegionScopeWorker
03 ACPI!IsPciDeviceWorker
04 ACPI!IsPciDeviceWorker
05 ACPI!IsPciDeviceWorker
06 ACPI!ACPIGetWorkerForString
07 ACPI!AsyncCallBack
08 ACPI!RunContext
09 ACPI!DispatchCtxtQueue
0a ACPI!StartTimeSlicePassive
0b ACPI!ACPIWorker
0c nt!PspSystemThreadStartup
0d nt!KiThreadStartup
1: kd> dv
PciObj = 0x8996d45c
CompletionRoutine = 0xf740d62c
Context = 0x898a8a10
Bus = 0x898a8a48 ""
Slot = 0x898a8a44
1: kd> dx -r1 ((ACPI!_NSObj *)0x8996d45c)
((ACPI!_NSObj *)0x8996d45c) : 0x8996d45c [Type: _NSObj *]
[+0x000] list [Type: _List]
[+0x008] pnsParent : 0x8996cd78 [Type: _NSObj *]
[+0x00c] pnsFirstChild : 0x8996d4d4 [Type: _NSObj *]
[+0x010] dwNameSeg : 0x30463153 [Type: unsigned long]
[+0x014] hOwner : 0x899af330 [Type: void *]
[+0x018] pnsOwnedNext : 0x8996d298 [Type: _NSObj *]
[+0x01c] ObjData [Type: _ObjData]
[+0x030] Context : 0x89968c88 [Type: void *]
[+0x034] dwRefCount : 0x0 [Type: unsigned long]
1: kd> db 0x8996cd78
8996cd78 38 cc 96 89 88 4f 97 89-ac ff 9a 89 f0 cd 96 89 8....O..........
8996cd88 50 32 50 30 30 f3 9a 89-38 cc 96 89 00 00 06 00 P2P00...8.......
8996cd98 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
8996cda8 a0 8e 96 89 00 00 00 00-48 4f 52 47 34 00 00 00 ........HORG4...
8996cdb8 00 90 96 89 00 00 00 00-04 00 00 00 02 00 00 00 ................
8996cdc8 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
8996cdd8 00 00 00 00 00 00 00 00-00 00 00 00 48 4e 53 4f ............HNSO
8996cde8 44 00 00 00 00 90 96 89-b0 4b 97 89 b4 ce 96 89 D........K......

1: kd> kc
#
00 ACPI!GetPciAddressWorker
01 ACPI!GetPciAddress
02 ACPI!PciConfigSpaceHandlerWorker
03 ACPI!GetOpRegionScopeWorker
04 ACPI!IsPciDeviceWorker
05 ACPI!IsPciDeviceWorker
06 ACPI!IsPciDeviceWorker
07 ACPI!ACPIGetWorkerForString
08 ACPI!AsyncCallBack
09 ACPI!RunContext
0a ACPI!DispatchCtxtQueue
0b ACPI!StartTimeSlicePassive
0c ACPI!ACPIWorker
0d nt!PspSystemThreadStartup
0e nt!KiThreadStartup
1: kd> dv
AcpiObject = 0x8996d45c
Status = 0n0
Result = 0x00000000
Context = 0x899c1460
buffer = unsigned char [64] ""
1: kd> dt GET_ADDRESS_CONTEXT 0x899c1460
ACPI!GET_ADDRESS_CONTEXT
+0x000 PciObject : 0x8996d45c _NSObj
+0x004 Bus : 0x898a8a48 ""
+0x008 Slot : 0x898a8a44 _PCI_SLOT_NUMBER
+0x00c ParentBus : 0 ''
+0x010 ParentSlot : _PCI_SLOT_NUMBER
+0x014 Flags : 0
+0x018 Address : 0
+0x01c BaseBusNumber : 0
+0x020 RunCompletion : 0n-1
+0x024 CompletionRoutine : 0xf740d62c void ACPI!PciConfigSpaceHandlerWorker+0
+0x028 CompletionContext : 0x898a8a10 Void

//
// First, determine the slot number.
//
if (!(state->Flags & PCISUPP_CHECKED_ADR)) {

//
// Get the _ADR.
//
state->Flags |= PCISUPP_CHECKED_ADR;
status = ACPIGetNSAddressAsync(
state->PciObject,
GetPciAddressWorker,
(PVOID)state,
&(state->Address),
NULL
);

1: kd> kc
#
00 ACPI!ACPIGet
01 ACPI!GetPciAddressWorker
02 ACPI!GetPciAddress
03 ACPI!PciConfigSpaceHandlerWorker
04 ACPI!GetOpRegionScopeWorker
05 ACPI!IsPciDeviceWorker
06 ACPI!IsPciDeviceWorker
07 ACPI!IsPciDeviceWorker
08 ACPI!ACPIGetWorkerForString
09 ACPI!AsyncCallBack
0a ACPI!RunContext
0b ACPI!DispatchCtxtQueue
0c ACPI!StartTimeSlicePassive
0d ACPI!ACPIWorker
0e nt!PspSystemThreadStartup
0f nt!KiThreadStartup
1: kd> dv
Target = 0x8996d45c
ObjectID = 0x5244415f
Flags = 0x48040402
SimpleArgument = 0x00000000
SimpleArgumentSize = 0

1: kd> db 0x8996d45c
8996d45c 98 d2 96 89 60 d8 96 89-78 cd 96 89 d4 d4 96 89 ....`...x.......
8996d46c 53 31 46 30 30 f3 9a 89-98 d2 96 89 00 00 06 00 S1F00...........

1: kd> db 0x8996d45c
8996d45c 98 d2 96 89 60 d8 96 89-78 cd 96 89 d4 d4 96 89 ....`...x.......
8996d46c 53 31 46 30 30 f3 9a 89-98 d2 96 89 00 00 06 00 S1F00...........
8996d47c 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
8996d48c 88 8c 96 89 00 00 00 00-48 4f 52 47 34 00 00 00 ........HORG4...
8996d49c 00 90 96 89 00 00 00 00-04 00 00 00 02 00 00 00 ................
8996d4ac 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
8996d4bc 00 00 00 00 00 00 00 00-00 00 00 00 48 4e 53 4f ............HNSO
8996d4cc 44 00 00 00 00 90 96 89-1c d8 96 89 18 d5 96 89 D...............
1: kd> dt nsobj 0x8996d45c
ACPI!NSOBJ
+0x000 list : _List
+0x008 pnsParent : 0x8996cd78 _NSObj
+0x00c pnsFirstChild : 0x8996d4d4 _NSObj
+0x010 dwNameSeg : 0x30463153
+0x014 hOwner : 0x899af330 Void
+0x018 pnsOwnedNext : 0x8996d298 _NSObj
+0x01c ObjData : _ObjData
+0x030 Context : 0x89968c88 Void
+0x034 dwRefCount : 0
1: kd> db 0x8996cd78
8996cd78 38 cc 96 89 88 4f 97 89-ac ff 9a 89 f0 cd 96 89 8....O..........
8996cd88 50 32 50 30 30 f3 9a 89-38 cc 96 89 00 00 06 00 P2P00...8.......
8996cd98 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................