hal!HalGetBusDataByOffset函数分析之hal!HalpReadPCIConfig中hal!HalpPCIReadUlongType1函数的IO访问--特别重要
1: kd> dt GET_ADDRESS_CONTEXT 895901f8
ACPI!GET_ADDRESS_CONTEXT
+0x000 PciObject : 0x8996e010 _NSObj
+0x004 Bus : 0x89986fc0 "???"
+0x008 Slot : 0x89986fbc _PCI_SLOT_NUMBER
+0x00c ParentBus : 0 ''
+0x010 ParentSlot : _PCI_SLOT_NUMBER
+0x014 Flags : 0x128
+0x018 Address : 0x30000
+0x01c BaseBusNumber : 0
+0x020 RunCompletion : 0n2
+0x024 CompletionRoutine : 0xf740d62c void ACPI!PciConfigSpaceHandlerWorker+0
+0x028 CompletionContext : 0x89986f88 Void
1: kd> dx -id 0,0,899a2278 -r1 (*((ACPI!_PCI_SLOT_NUMBER *)0x89590208))
(*((ACPI!_PCI_SLOT_NUMBER *)0x89590208)) [Type: _PCI_SLOT_NUMBER]
[+0x000] u [Type: __unnamed]
1: kd> dt _PCI_SLOT_NUMBER 0x89590208
hal!_PCI_SLOT_NUMBER
+0x000 u : __unnamed
1: kd> dt _PCI_SLOT_NUMBER 0x89590208 -r
hal!_PCI_SLOT_NUMBER
+0x000 u : __unnamed
+0x000 bits : __unnamed
+0x000 DeviceNumber : 0y10001 (0x11)
+0x000 FunctionNumber : 0y000
+0x000 Reserved : 0y000000000000000000000000 (0)
+0x000 AsULONG : 0x11
1: kd> dt _PCI_SLOT_NUMBER 0x89986fbc -r
hal!_PCI_SLOT_NUMBER
+0x000 u : __unnamed
+0x000 bits : __unnamed
+0x000 DeviceNumber : 0y00011 (0x3)
+0x000 FunctionNumber : 0y000
+0x000 Reserved : 0y000000000000000000000000 (0)
+0x000 AsULONG : 3
0010 0001 1000 0000 0000
0100 0000 40
1: kd> kc
#
00 ACPI!PciConfigSpaceHandlerWorker
01 ACPI!GetPciAddressWorker
02 ACPI!GetPciAddressWorker
03 ACPI!ACPIGetWorkerForInteger
04 ACPI!AsyncCallBack
05 ACPI!RunContext
06 ACPI!DispatchCtxtQueue
07 ACPI!StartTimeSlicePassive
08 ACPI!ACPIWorker
09 nt!PspSystemThreadStartup
0a nt!KiThreadStartup
1: kd> dv
AcpiObject = 0x899b00ac
CompletionStatus = 0n0
Result = 0x00000000
Context = 0x89986f88
1: kd> dt PCI_CONFIG_STATE 0x89986f88
ACPI!PCI_CONFIG_STATE
+0x000 AccessType : 0
+0x004 OpRegion : 0x89986fc4 _NSObj
+0x008 Address : 0
+0x00c Size : 0x40
+0x010 Data : 0x899c5240 -> 0
+0x014 Context : 0
+0x018 CompletionHandler : 0xf740dab2 Void
+0x01c CompletionContext : 0x899c5218 Void
+0x020 PciObj : 0x8996e010 _NSObj
+0x024 ParentObj : (null)
+0x028 CompletionHandlerType : 1
+0x02c Flags : 0x100
+0x030 RunCompletion : 0n0
+0x034 Slot : _PCI_SLOT_NUMBER
+0x038 Bus : 0x2 ''
+0x039 IsPciDeviceResult : 0 ''
1: kd> dx -id 0,0,899a2278 -r1 ((ACPI!_NSObj *)0x89986fc4)
((ACPI!_NSObj *)0x89986fc4) : 0x89986fc4 [Type: _NSObj *]
[+0x000] list [Type: _List]
[+0x008] pnsParent : 0x0 [Type: _NSObj *]
[+0x00c] pnsFirstChild : 0x0 [Type: _NSObj *]
[+0x010] dwNameSeg : 0x0 [Type: unsigned long]
[+0x014] hOwner : 0x0 [Type: void *]
[+0x018] pnsOwnedNext : 0x0 [Type: _NSObj *]
[+0x01c] ObjData [Type: _ObjData]
[+0x030] Context : 0x8996e010 [Type: void *]
[+0x034] dwRefCount : 0x0 [Type: unsigned long]
1: kd> dx -id 0,0,899a2278 -r1 ((ACPI!_NSObj *)0x8996e010)
((ACPI!_NSObj *)0x8996e010) : 0x8996e010 [Type: _NSObj *]
[+0x000] list [Type: _List]
[+0x008] pnsParent : 0x8996cd78 [Type: _NSObj *]
[+0x00c] pnsFirstChild : 0x8996e054 [Type: _NSObj *]
[+0x010] dwNameSeg : 0x30463453 [Type: unsigned long]
[+0x014] hOwner : 0x899af330 [Type: void *]
[+0x018] pnsOwnedNext : 0x8996dfcc [Type: _NSObj *]
[+0x01c] ObjData [Type: _ObjData]
[+0x030] Context : 0x89968688 [Type: void *]
[+0x034] dwRefCount : 0x0 [Type: unsigned long]
1: kd> dt acpi!_DEVICE_EXTENSION 0x89968688
+0x000 Flags : 0x00401000`00010008
+0x000 UFlags : __unnamed
+0x008 Signature : 0x5f534750
+0x00c DebugFlags : 0
+0x010 DispatchTable : (null)
+0x014 WorkContext : WORK_QUEUE_CONTEXT
+0x014 Fdo : _FDO_DEVICE_EXTENSION
+0x014 Filter : _FILTER_DEVICE_EXTENSION
+0x014 Pdo : _PDO_DEVICE_EXTENSION
+0x058 WorkQueue : EXTENSION_WORKER
+0x058 Button : BUTTON_EXTENSION
+0x058 Thermal : THERMAL_EXTENSION
+0x058 LinkNode : LINK_NODE_EXTENSION
+0x058 Dock : DOCK_EXTENSION
+0x058 Processor : _PROCESSOR_DEVICE_EXTENSION
+0x088 DeviceState : 0 ( Stopped )
+0x08c PreviousState : 0 ( Stopped )
+0x090 PowerInfo : _ACPI_POWER_INFO
+0x10c DeviceID : 0x00030000 ""
+0x10c Address : 0x30000
+0x110 InstanceID : (null)
+0x114 ResourceList : (null)
+0x118 PnpResourceList : (null)
+0x11c OutstandingIrpCount : 0n1
+0x120 ReferenceCount : 0n3
+0x124 HibernatePathCount : 0n0
+0x128 RemoveEvent : (null)
+0x12c AcpiObject : 0x8996e010 _NSObj
+0x130 DeviceObject : (null)
+0x134 TargetDeviceObject : (null)
+0x138 PhysicalDeviceObject : (null)
+0x13c ParentExtension : 0x89968ea0 _DEVICE_EXTENSION
+0x140 ChildDeviceList : _LIST_ENTRY [ 0x899687c8 - 0x899687c8 ]
+0x148 SiblingDeviceList : _LIST_ENTRY [ 0x899685d0 - 0x899689d0 ]
+0x150 EjectDeviceHead : _LIST_ENTRY [ 0x899687d8 - 0x899687d8 ]
+0x158 EjectDeviceList : _LIST_ENTRY [ 0x899687e0 - 0x899687e0 ]
1: kd> dx -id 0,0,899a2278 -r1 (*((ACPI!_FILTER_DEVICE_EXTENSION *)0x8996869c))
(*((ACPI!_FILTER_DEVICE_EXTENSION *)0x8996869c)) [Type: _FILTER_DEVICE_EXTENSION]
[+0x000] WorkContext [Type: WORK_QUEUE_CONTEXT]
[+0x018] Interface : 0x0 [Type: _BUS_INTERFACE_STANDARD *]
interface = pciDeviceFilter->Filter.Interface; =0
#define PCISUPP_GOT_SLOT_INFO 0x100
1: kd> dt PCI_CONFIG_STATE 0x89986f88
ACPI!PCI_CONFIG_STATE
+0x000 AccessType : 0
+0x004 OpRegion : 0x89986fc4 _NSObj
+0x008 Address : 0
+0x00c Size : 0x40
+0x010 Data : 0x899c5240 -> 0
+0x014 Context : 0
+0x018 CompletionHandler : 0xf740dab2 Void
+0x01c CompletionContext : 0x899c5218 Void
+0x020 PciObj : 0x8996e010 _NSObj
+0x024 ParentObj : (null)
+0x028 CompletionHandlerType : 1
+0x02c Flags : 0x100
if (!interface) {
if (!(state->Flags & PCISUPP_GOT_SLOT_INFO)) { 不符合条件。
state->Flags |= PCISUPP_GOT_SLOT_INFO;
#define RSACCESS_READ 0
#define RSACCESS_WRITE 1
} else {
//
// Do config space op through HAL
//
bytes = HalGetBusDataByOffset(PCIConfiguration,
state->Bus,
state->Slot.u.AsULONG,
state->Data,
state->Address,
state->Size);
}
第二部分：
1: kd> t
Breakpoint 6 hit
eax=00000002 ebx=89986f88 ecx=00000100 edx=89986fc4 esi=00000000 edi=00000000
eip=804f25ee esp=f791ab74 ebp=f791abe0 iopl=0 nv up ei pl zr na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000246
hal!HalGetBusDataByOffset:
804f25ee 55 push ebp
1: kd> kc
#
00 hal!HalGetBusDataByOffset
01 ACPI!PciConfigSpaceHandlerWorker
02 ACPI!GetPciAddressWorker
03 ACPI!GetPciAddressWorker
04 ACPI!ACPIGetWorkerForInteger
05 ACPI!AsyncCallBack
06 ACPI!RunContext
07 ACPI!DispatchCtxtQueue
08 ACPI!StartTimeSlicePassive
09 ACPI!ACPIWorker
0a nt!PspSystemThreadStartup
0b nt!KiThreadStartup
1: kd> dv
BusDataType = PCIConfiguration (0n4)
BusNumber = 2
SlotNumber = 3
Buffer = 0x899c5240
Offset = 0
Length = 0x40
bus = struct _BUS_HANDLER
RtlCopyMemory(&bus, &HalpFakePciBusHandler, sizeof(BUS_HANDLER));
bus.BusNumber = BusNumber; 2
slot.u.AsULONG = SlotNumber;
length = HalpGetPCIData(&bus,
&bus,
slot,
Buffer,
Offset,
Length
);
1: kd> x hal!HalpFakePciBusHandler
804fb658 hal!HalpFakePciBusHandler = struct _BUS_HANDLER
1: kd> dx -r1 (*((halmacpi!_BUS_HANDLER *)0x804fb658))
(*((halmacpi!_BUS_HANDLER *)0x804fb658)) [Type: _BUS_HANDLER]
[+0x000] Version : 0x1 [Type: unsigned long]
[+0x004] InterfaceType : PCIBus (5) [Type: _INTERFACE_TYPE]
[+0x008] ConfigurationType : PCIConfiguration (4) [Type: _BUS_DATA_TYPE]
[+0x00c] BusNumber : 0x0 [Type: unsigned long]
[+0x010] DeviceObject : 0x0 [Type: _DEVICE_OBJECT *]
[+0x014] ParentHandler : 0x0 [Type: _BUS_HANDLER *]
[+0x018] BusData : 0x804fb5e0 [Type: void *]
[+0x01c] DeviceControlExtensionSize : 0x0 [Type: unsigned long]
[+0x020] BusAddresses : 0x0 [Type: _SUPPORTED_RANGES *]
[+0x024] Reserved [Type: unsigned long [4]]
[+0x034] GetBusData : 0x804f18ec [Type: unsigned long (*)(_BUS_HANDLER *,_BUS_HANDLER *,unsigned long,void *,unsigned long,unsigned long)]
[+0x038] SetBusData : 0x804f1a24 [Type: unsigned long (*)(_BUS_HANDLER *,_BUS_HANDLER *,unsigned long,void *,unsigned long,unsigned long)]
[+0x03c] AdjustResourceList : 0x0 [Type: long (*)(_BUS_HANDLER *,_BUS_HANDLER *,_IO_RESOURCE_REQUIREMENTS_LIST * *)]
[+0x040] AssignSlo
