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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
pnpmap.c
Abstract:
This module contains the code that translates the device info returned from the PnP BIOS into root enumerated devices.
Author:
Robert B. Nelson (RobertN) 22-Sep-1997
Environment:
Kernel mode
Revision History :
--*/
#include "pnpmgrp.h"
#pragma hdrstop
#include "pnpcvrt.h"
#include "pbios.h"
#if defined(_X86_)
#ifdef POOL_TAGGING
#undef ExAllocatePool
#define ExAllocatePool(a,b) ExAllocatePoolWithTag(a,b,'PpaM')
#endif
#define DECODE_FLAGS ( CM_RESOURCE_PORT_10_BIT_DECODE | \
CM_RESOURCE_PORT_12_BIT_DECODE | \ CM_RESOURCE_PORT_16_BIT_DECODE | \ CM_RESOURCE_PORT_POSITIVE_DECODE )
#if UMODETEST
#define MULTIFUNCTION_KEY_NAME L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\TestSystem\\MultifunctionAdapter"
#define ENUMROOT_KEY_NAME L"\\Registry\\Machine\\System\\TestControlSet\\Enum\\Root"
#else
#define MULTIFUNCTION_KEY_NAME L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter"
#define ENUMROOT_KEY_NAME L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\Root"
#endif
#define BIOSINFO_KEY_NAME L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Biosinfo\\PNPBios"
#define DISABLENODES_VALUE_NAME L"DisableNodes"
#define DECODEINFO_VALUE_NAME L"FullDecodeChipsetOverride"
#define INSTANCE_ID_PREFIX L"PnPBIOS_"
#define DEFAULT_STRING_SIZE 80
#define DEFAULT_VALUE_SIZE 80
#define DEFAULT_DEVICE_DESCRIPTION L"Unknown device class"
#define EXCLUSION_ENTRY(a) { a, sizeof(a) - sizeof(UNICODE_NULL) }
typedef struct _EXCLUDED_PNPNODE { PWCHAR Id; ULONG IdLength;} EXCLUDED_PNPNODE, *PEXCLUDED_PNPNODE;
#ifdef ALLOC_DATA_PRAGMA
#pragma const_seg("INITCONST")
#endif
const EXCLUDED_PNPNODE ExcludedDevices[] = { EXCLUSION_ENTRY(L"*PNP03"), // Keyboards
EXCLUSION_ENTRY(L"*PNP0A"), // PCI Busses
EXCLUSION_ENTRY(L"*PNP0E"), // PCMCIA Busses
EXCLUSION_ENTRY(L"*PNP0F"), // Mice
EXCLUSION_ENTRY(L"*IBM3780"), // IBM Trackpoint Mouse
EXCLUSION_ENTRY(L"*IBM3781") // IBM Trackpoint Mouse
};
#define EXCLUDED_DEVICES_COUNT (sizeof(ExcludedDevices) / sizeof(ExcludedDevices[0]))
const EXCLUDED_PNPNODE ExcludeIfDisabled[] = { EXCLUSION_ENTRY(L"*PNP0C01"), // Motherboard resources
EXCLUSION_ENTRY(L"*PNP0C02") // Motherboard resources
};
#define EXCLUDE_DISABLED_COUNT (sizeof(ExcludeIfDisabled) / sizeof(ExcludeIfDisabled[0]))
typedef struct _CLASSDATA { ULONG Value; PWCHAR Description;} CLASSDATA;
const CLASSDATA Class1Descriptions[] = { { 0x0000, L"SCSI Controller" }, { 0x0100, L"IDE Controller" }, { 0x0200, L"Floppy Controller" }, { 0x0300, L"IPI Controller" }, { 0x0400, L"RAID Controller" }, { 0x8000, L"Other Mass Storage" }};
const CLASSDATA Class2Descriptions[] = { { 0x0000, L"Ethernet" }, { 0x0100, L"Token ring" }, { 0x0200, L"FDDI" }, { 0x0300, L"ATM" }, { 0x8000, L"Other network" }};
const CLASSDATA Class3Descriptions[] = { { 0x0000, L"VGA" }, { 0x0001, L"SVGA" }, { 0x0100, L"XGA" }, { 0x8000, L"Other display" }};
const CLASSDATA Class4Descriptions[] = { { 0x0000, L"Video device" }, { 0x0100, L"Audio device" }, { 0x8000, L"Other multimedia" }};
const CLASSDATA Class5Descriptions[] = { { 0x0000, L"RAM memory" }, { 0x0100, L"Flash memory" }, { 0x8000, L"Other memory" }};
const CLASSDATA Class6Descriptions[] = { { 0x0000, L"HOST / PCI" }, { 0x0100, L"PCI / ISA" }, { 0x0200, L"PCI / EISA" }, { 0x0300, L"PCI / MCA" }, { 0x0400, L"PCI / PCI" }, { 0x0500, L"PCI / PCMCIA" }, { 0x0600, L"NuBus" }, { 0x0700, L"Cardbus" }, { 0x8000, L"Other bridge" }};
const CLASSDATA Class7Descriptions[] = { { 0x0000, L"XT Serial" }, { 0x0001, L"16450" }, { 0x0002, L"16550" }, { 0x0100, L"Parallel output only" }, { 0x0101, L"BiDi Parallel" }, { 0x0102, L"ECP 1.x parallel" }, { 0x8000, L"Other comm" }};
const CLASSDATA Class8Descriptions[] = { { 0x0000, L"Generic 8259" }, { 0x0001, L"ISA PIC" }, { 0x0002, L"EISA PIC" }, { 0x0100, L"Generic 8237" }, { 0x0101, L"ISA DMA" }, { 0x0102, L"EISA DMA" }, { 0x0200, L"Generic 8254" }, { 0x0201, L"ISA timer" }, { 0x0202, L"EISA timer" }, { 0x0300, L"Generic RTC" }, { 0x0301, L"ISA RTC" }, { 0x8000, L"Other system device" }};
const CLASSDATA Class9Descriptions[] = { { 0x0000, L"Keyboard" }, { 0x0100, L"Digitizer" }, { 0x0200, L"Mouse" }, { 0x8000, L"Other input" }};
const CLASSDATA Class10Descriptions[] = { { 0x0000, L"Generic dock" }, { 0x8000, L"Other dock" },};
const CLASSDATA Class11Descriptions[] = { { 0x0000, L"386" }, { 0x0100, L"486" }, { 0x0200, L"Pentium" }, { 0x1000, L"Alpha" }, { 0x4000, L"Co-processor" }};
const CLASSDATA Class12Descriptions[] = { { 0x0000, L"Firewire" }, { 0x0100, L"Access bus" }, { 0x0200, L"SSA" }, { 0x8000, L"Other serial bus" }};
#define CLASSLIST_ENTRY(a) { a, sizeof(a) / sizeof(a[0]) }
struct _CLASS_DESCRIPTIONS_LIST {
CLASSDATA const*Descriptions; ULONG Count;
} const ClassDescriptionsList[] = { { NULL, 0 }, CLASSLIST_ENTRY( Class1Descriptions ), CLASSLIST_ENTRY( Class2Descriptions ), CLASSLIST_ENTRY( Class3Descriptions ), CLASSLIST_ENTRY( Class4Descriptions ), CLASSLIST_ENTRY( Class5Descriptions ), CLASSLIST_ENTRY( Class6Descriptions ), CLASSLIST_ENTRY( Class7Descriptions ), CLASSLIST_ENTRY( Class8Descriptions ), CLASSLIST_ENTRY( Class9Descriptions ), CLASSLIST_ENTRY( Class10Descriptions ), CLASSLIST_ENTRY( Class11Descriptions ), CLASSLIST_ENTRY( Class12Descriptions )
};
#define CLASSLIST_COUNT ( sizeof(ClassDescriptionsList) / sizeof(ClassDescriptionsList[0]) )
typedef struct _BIOS_DEVNODE_INFO { WCHAR ProductId[10]; // '*' + 7 char ID + NUL + NUL for REG_MULTI_SZ
UCHAR Handle; // BIOS Node # / Handle
UCHAR TypeCode[3]; USHORT Attributes; PWSTR Replaces; // Instance ID of Root enumerated device being replaced
PCM_RESOURCE_LIST BootConfig; ULONG BootConfigLength; PIO_RESOURCE_REQUIREMENTS_LIST BasicConfig; ULONG BasicConfigLength; PWSTR CompatibleIDs; // REG_MULTI_SZ list of compatible IDs (including ProductId)
ULONG CompatibleIDsLength; BOOLEAN FirmwareDisabled; // determined that it's disabled by firmware
} BIOS_DEVNODE_INFO, *PBIOS_DEVNODE_INFO;
NTSTATUSPbBiosResourcesToNtResources ( IN ULONG BusNumber, IN ULONG SlotNumber, IN OUT PUCHAR *BiosData, OUT PIO_RESOURCE_REQUIREMENTS_LIST *ReturnedList, OUT PULONG ReturnedLength );
VOIDPnPBiosExpandProductId( PUCHAR CompressedId, PWCHAR ProductIDStr );
NTSTATUSPnPBiosIoResourceListToCmResourceList( IN PIO_RESOURCE_REQUIREMENTS_LIST IoResourceList, OUT PCM_RESOURCE_LIST *CmResourceList, OUT ULONG *CmResourceListSize );
NTSTATUSPnPBiosExtractCompatibleIDs( IN PUCHAR *DevNodeData, IN ULONG DevNodeDataLength, OUT PWSTR *CompatibleIDs, OUT ULONG *CompatibleIDsLength );
NTSTATUSPnPBiosTranslateInfo( IN VOID *BiosInfo, IN ULONG BiosInfoLength, OUT PBIOS_DEVNODE_INFO *DevNodeInfoList, OUT ULONG *NumberNodes );
LONGPnPBiosFindMatchingDevNode( IN PWCHAR MapperName, IN PCM_RESOURCE_LIST ResourceList, IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes );
NTSTATUSPnPBiosEliminateDupes( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes );
PWCHARPnPBiosGetDescription( IN PBIOS_DEVNODE_INFO DevNodeInfoEntry );
NTSTATUSPnPBiosWriteInfo( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes );
VOIDPnPBiosCopyIoDecode( IN HANDLE EnumRootKey, IN PBIOS_DEVNODE_INFO DevNodeInfo );
NTSTATUSPnPBiosFreeDevNodeInfo( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes );
NTSTATUSPnPBiosCheckForHardwareDisabled( IN PIO_RESOURCE_REQUIREMENTS_LIST IoResourceList, IN OUT PBOOLEAN Disabled );
BOOLEANPnPBiosCheckForExclusion( IN EXCLUDED_PNPNODE const* ExclusionArray, IN ULONG ExclusionCount, IN PWCHAR PnpDeviceName, IN PWCHAR PnpCompatIds );
VOIDPpFilterNtResource ( IN PWCHAR PnpDeviceName, PIO_RESOURCE_REQUIREMENTS_LIST ResReqList );
NTSTATUSComPortDBAdd( IN HANDLE DeviceParamKey, IN PWSTR PortName );
BOOLEANPnPBiosIgnoreNode ( PWCHAR PnpID, PWCHAR excludeNodes );PKEY_VALUE_FULL_INFORMATIONPnPGetBiosInfoValue( PWCHAR ValueName );NTSTATUSPnPBiosCopyDeviceParamKey( IN HANDLE EnumRootKey, IN PWCHAR SourcePath, IN PWCHAR DestinationPath );
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, PnPBiosExpandProductId)
#pragma alloc_text(INIT, PnPBiosIgnoreNode)
#pragma alloc_text(INIT, PnPGetBiosInfoValue)
#pragma alloc_text(INIT, PnPBiosIoResourceListToCmResourceList)
#pragma alloc_text(INIT, PnPBiosExtractCompatibleIDs)
#pragma alloc_text(INIT, PnPBiosTranslateInfo)
#pragma alloc_text(INIT, PnPBiosFindMatchingDevNode)
#pragma alloc_text(INIT, PnPBiosEliminateDupes)
#pragma alloc_text(INIT, PnPBiosGetDescription)
#pragma alloc_text(INIT, PnPBiosCopyDeviceParamKey)
#pragma alloc_text(INIT, PnPBiosWriteInfo)
#pragma alloc_text(INIT, PnPBiosCopyIoDecode)
#pragma alloc_text(INIT, PnPBiosFreeDevNodeInfo)
#pragma alloc_text(INIT, PnPBiosCheckForHardwareDisabled)
#pragma alloc_text(INIT, PnPBiosCheckForExclusion)
#pragma alloc_text(INIT, PnPBiosMapper)
#pragma alloc_text(INIT, PpFilterNtResource)
#pragma alloc_text(PAGE, PnPBiosGetBiosInfo)
#endif
NTSTATUSPnPBiosGetBiosInfo( OUT PVOID *BiosInfo, OUT ULONG *BiosInfoLength )/*++
Routine Description:
This function retrieves the PnP BIOS info accumulated by NTDETECT.COM and placed in the registry.
Arguments:
BiosInfo - Set to a dynamically allocated block of information retrieved from the PnP BIOS by NTDETECT. This block should be freed using ExFreePool. The contents of the block are the PnP BIOS Installation Check Structure followed by the DevNode Structures reported by the BIOS. The detailed format is documented in the PnP BIOS spec.
BiosInfoLength - Length of the block whose address is stored in BiosInfo.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ UNICODE_STRING multifunctionKeyName, biosKeyName, valueName; HANDLE multifunctionKey = NULL, biosKey = NULL; PKEY_BASIC_INFORMATION keyBasicInfo = NULL; ULONG keyBasicInfoLength; PKEY_VALUE_PARTIAL_INFORMATION valueInfo = NULL; ULONG valueInfoLength; ULONG returnedLength; PCM_FULL_RESOURCE_DESCRIPTOR biosValue; ULONG index; NTSTATUS status = STATUS_UNSUCCESSFUL;
PAGED_CODE();
//
// The PnP BIOS info is written to one of the subkeys under
// MULTIFUNCTION_KEY_NAME. The appropriate key is determined by
// enumerating the subkeys and using the first one which has a value named
// "Identifier" that is "PNP BIOS".
//
PiWstrToUnicodeString(&multifunctionKeyName, MULTIFUNCTION_KEY_NAME); status = IopOpenRegistryKeyEx( &multifunctionKey, NULL, &multifunctionKeyName, KEY_READ ); if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open %S, status = %8.8X\n", MULTIFUNCTION_KEY_NAME, status) );
return STATUS_UNSUCCESSFUL; } //
// Allocate memory for key names returned from ZwEnumerateKey and values
// returned from ZwQueryValueKey.
//
keyBasicInfoLength = sizeof(KEY_BASIC_INFORMATION) + DEFAULT_STRING_SIZE; keyBasicInfo = ExAllocatePool(PagedPool, keyBasicInfoLength + sizeof(UNICODE_NULL));
if (keyBasicInfo == NULL) {
ZwClose( multifunctionKey );
return STATUS_NO_MEMORY; }
valueInfoLength = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + DEFAULT_STRING_SIZE; valueInfo = ExAllocatePool(PagedPool, valueInfoLength);
if (valueInfo == NULL) {
ExFreePool( keyBasicInfo );
ZwClose( multifunctionKey );
return STATUS_NO_MEMORY; } //
// Enumerate each key under HKLM\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter
// to locate the one representing the PnP BIOS information.
//
for (index = 0; ; index++) {
status = ZwEnumerateKey( multifunctionKey, // handle of key to enumerate
index, // index of subkey to enumerate
KeyBasicInformation, keyBasicInfo, keyBasicInfoLength, &returnedLength);
if (!NT_SUCCESS(status)) {
if (status != STATUS_NO_MORE_ENTRIES) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not enumerate under key %S, status = %8.8X\n", MULTIFUNCTION_KEY_NAME, status) ); }
break; }
//
// We found a subkey, NUL terminate the name and open the subkey.
//
keyBasicInfo->Name[ keyBasicInfo->NameLength / 2 ] = L'\0';
RtlInitUnicodeString(&biosKeyName, keyBasicInfo->Name); status = IopOpenRegistryKeyEx( &biosKey, multifunctionKey, &biosKeyName, KEY_READ );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S, status = %8.8X\n", MULTIFUNCTION_KEY_NAME, keyBasicInfo->Name, status) ); break; }
//
// Now we need to check the Identifier value in the subkey to see if
// it is PNP BIOS.
//
PiWstrToUnicodeString(&valueName, L"Identifier"); status = ZwQueryValueKey( biosKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength);
// lets see if its the PNP BIOS identifier
if (NT_SUCCESS(status)) {
if (wcscmp((PWSTR)valueInfo->Data, L"PNP BIOS") == 0) {
//
// We found the PnP BIOS subkey, retrieve the BIOS info which
// is stored in the "Configuration Data" value.
//
// We'll start off with our default value buffer and increase
// its size if necessary.
//
PiWstrToUnicodeString(&valueName, L"Configuration Data");
status = ZwQueryValueKey( biosKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength);
if (!NT_SUCCESS(status)) {
if (status == STATUS_BUFFER_TOO_SMALL || status == STATUS_BUFFER_OVERFLOW) {
//
// The default buffer was too small, free it and reallocate
// it to the required size.
//
ExFreePool( valueInfo );
valueInfoLength = returnedLength; valueInfo = ExAllocatePool( PagedPool, valueInfoLength );
if (valueInfo != NULL) {
status = ZwQueryValueKey( biosKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength ); } else {
status = STATUS_NO_MEMORY; } } }
if (NT_SUCCESS(status)) {
//
// We now have the PnP BIOS data but it is buried inside
// the resource structures. Do some consistency checks and
// then extract it into its own buffer.
//
ASSERT(valueInfo->Type == REG_FULL_RESOURCE_DESCRIPTOR);
biosValue = (PCM_FULL_RESOURCE_DESCRIPTOR)valueInfo->Data;
//
// The WMI folks added another list so we should search for
// the PnPBIOS one, but for now the BIOS one is always
// first.
//
*BiosInfoLength = biosValue->PartialResourceList.PartialDescriptors[0].u.DeviceSpecificData.DataSize; *BiosInfo = ExAllocatePool(PagedPool, *BiosInfoLength);
if (*BiosInfo != NULL) {
RtlCopyMemory( *BiosInfo, &biosValue->PartialResourceList.PartialDescriptors[1], *BiosInfoLength );
status = STATUS_SUCCESS;
} else {
*BiosInfoLength = 0;
status = STATUS_NO_MEMORY; }
} else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error retrieving %S\\%S\\Configuration Data, status = %8.8X\n", MULTIFUNCTION_KEY_NAME, keyBasicInfo->Name, status) ); }
//
// We found the PnP BIOS entry, so close the key handle and
// return.
//
ZwClose(biosKey);
break; } }
//
// That wasn't it so close this handle and try the next subkey.
//
ZwClose(biosKey); }
//
// Cleanup the dynamically allocated temporary buffers.
//
if (valueInfo != NULL) {
ExFreePool(valueInfo); }
if (keyBasicInfo != NULL) {
ExFreePool(keyBasicInfo); }
ZwClose(multifunctionKey);
return status;}
VOIDPnPBiosExpandProductId( PUCHAR CompressedId, PWCHAR ProductIDStr )/*++
Routine Description:
This function expands a PnP Device ID from the 4 byte compressed form into an 7 character unicode string. The string is then NUL terminated.
Arguments:
CompressedId - Pointer to the 4 byte compressed Device ID as defined in the PnP Specification.
ProductIDStr - Pointer to the 16 byte buffer in which the unicode string version of the ID is placed.
Return Value:
NONE.
--*/{ static const CHAR HexDigits[] = "0123456789ABCDEF";
ProductIDStr[0] = (CompressedId[0] >> 2) + 0x40; ProductIDStr[1] = (((CompressedId[0] & 0x03) << 3) | (CompressedId[1] >> 5)) + 0x40; ProductIDStr[2] = (CompressedId[1] & 0x1f) + 0x40; ProductIDStr[3] = HexDigits[CompressedId[2] >> 4]; ProductIDStr[4] = HexDigits[CompressedId[2] & 0x0F]; ProductIDStr[5] = HexDigits[CompressedId[3] >> 4]; ProductIDStr[6] = HexDigits[CompressedId[3] & 0x0F]; ProductIDStr[7] = 0x00;}
BOOLEANPnPBiosIgnoreNode ( PWCHAR PnpID, PWCHAR excludeNodes ){ BOOLEAN bRet=FALSE; ULONG keyLen; PWCHAR pTmp;
ASSERT(excludeNodes);
//
//excludeNodes is multi-sz, so walk through each one and check it.
//
pTmp=excludeNodes;
while (*pTmp != '\0') {
keyLen = (ULONG)wcslen(pTmp);
if (RtlCompareMemory(PnpID,pTmp,keyLen*sizeof (WCHAR)) == keyLen*sizeof (WCHAR)) {
bRet=TRUE; break; } pTmp = pTmp + keyLen + 1;
}
return bRet;}
PKEY_VALUE_FULL_INFORMATIONPnPGetBiosInfoValue( PWCHAR ValueName ){ UNICODE_STRING biosKeyName; HANDLE biosKey; NTSTATUS status; PKEY_VALUE_FULL_INFORMATION info;
info = NULL; PiWstrToUnicodeString(&biosKeyName, BIOSINFO_KEY_NAME); status = IopOpenRegistryKeyEx( &biosKey, NULL, &biosKeyName, KEY_READ );
if (NT_SUCCESS(status)) {
IopGetRegistryValue (biosKey, ValueName, &info); ZwClose (biosKey); }
return info;}
BOOLEANPnPBiosCheckForExclusion( IN EXCLUDED_PNPNODE const*Exclusions, IN ULONG ExclusionCount, IN PWCHAR PnpDeviceName, IN PWCHAR PnpCompatIds ){ PWCHAR idPtr; ULONG exclusionIndex;
for (exclusionIndex = 0; exclusionIndex < ExclusionCount; exclusionIndex++) {
idPtr = PnpDeviceName;
if (RtlCompareMemory( idPtr, Exclusions[ exclusionIndex ].Id, Exclusions[ exclusionIndex ].IdLength) != Exclusions[ exclusionIndex ].IdLength ) {
idPtr = PnpCompatIds;
if (idPtr != NULL) {
while (*idPtr != '\0') {
if (RtlCompareMemory( idPtr, Exclusions[ exclusionIndex ].Id, Exclusions[ exclusionIndex ].IdLength) == Exclusions[ exclusionIndex ].IdLength ) {
break; }
idPtr += 9; }
if (*idPtr == '\0') {
idPtr = NULL; } } }
if (idPtr != NULL) {
break; } }
if (exclusionIndex < ExclusionCount) {
return TRUE; }
return FALSE;}
NTSTATUSPnPBiosIoResourceListToCmResourceList( IN PIO_RESOURCE_REQUIREMENTS_LIST IoResourceList, OUT PCM_RESOURCE_LIST *CmResourceList, OUT ULONG *CmResourceListSize )/*++
Routine Description:
Converts an IO_RESOURCE_REQUIREMENTS_LIST into a CM_RESOURCE_LIST. This routine is used to convert the list of resources currently being used by a device into a form suitable for writing to the BootConfig registry value.
Arguments:
IoResourceList - Pointer to the input list.
CmResourceList - Pointer to a PCM_RESOURCE_LIST which is set to the dynamically allocated and filled in using the data from IoResourceList.
CmResourceListSize - Pointer to a variable which is set to the size in bytes of the dynamically allocated *CmResourceList.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ PCM_PARTIAL_RESOURCE_LIST partialList; PCM_PARTIAL_RESOURCE_DESCRIPTOR partialDescriptor; PIO_RESOURCE_DESCRIPTOR ioDescriptor; ULONG descIndex;
//
// Since this routine is only used to translate the allocated resources
// returned by the PnP BIOS, we can assume that there is only 1 alternative
// list
//
ASSERT(IoResourceList->AlternativeLists == 1);
//
// Calculate the size of the translated list and allocate memory for it.
//
*CmResourceListSize = sizeof(CM_RESOURCE_LIST) + (IoResourceList->AlternativeLists - 1) * sizeof(CM_FULL_RESOURCE_DESCRIPTOR) + (IoResourceList->List[0].Count - 1) * sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
*CmResourceList = ExAllocatePool( PagedPool, *CmResourceListSize );
if (*CmResourceList == NULL) {
*CmResourceListSize = 0;
return STATUS_NO_MEMORY; }
//
// Copy the header info from the requirements list to the resource list.
//
(*CmResourceList)->Count = 1;
(*CmResourceList)->List[ 0 ].InterfaceType = IoResourceList->InterfaceType; (*CmResourceList)->List[ 0 ].BusNumber = IoResourceList->BusNumber;
partialList = &(*CmResourceList)->List[ 0 ].PartialResourceList;
partialList->Version = IoResourceList->List[ 0 ].Version; partialList->Revision = IoResourceList->List[ 0 ].Revision; partialList->Count = 0;
//
// Translate each resource descriptor, currently we only handle ports,
// memory, interrupts, and dma. The current implementation of the routine
// which converts from ISA PnP Resource data to IO_RESOURCE_REQUIREMENTS
// won't generate any other descriptor types given the data returned from
// the BIOS.
//
partialDescriptor = &partialList->PartialDescriptors[ 0 ]; for (descIndex = 0; descIndex < IoResourceList->List[ 0 ].Count; descIndex++) {
ioDescriptor = &IoResourceList->List[ 0 ].Descriptors[ descIndex ];
switch (ioDescriptor->Type) {
case CmResourceTypePort: partialDescriptor->u.Port.Start = ioDescriptor->u.Port.MinimumAddress; partialDescriptor->u.Port.Length = ioDescriptor->u.Port.Length; break;
case CmResourceTypeInterrupt: if (ioDescriptor->u.Interrupt.MinimumVector == (ULONG)2 ) { *CmResourceListSize -= sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR); continue; } partialDescriptor->u.Interrupt.Level = ioDescriptor->u.Interrupt.MinimumVector; partialDescriptor->u.Interrupt.Vector = ioDescriptor->u.Interrupt.MinimumVector; partialDescriptor->u.Interrupt.Affinity = ~0ul; break;
case CmResourceTypeMemory: partialDescriptor->u.Memory.Start = ioDescriptor->u.Memory.MinimumAddress; partialDescriptor->u.Memory.Length = ioDescriptor->u.Memory.Length; break;
case CmResourceTypeDma: partialDescriptor->u.Dma.Channel = ioDescriptor->u.Dma.MinimumChannel; partialDescriptor->u.Dma.Port = 0; partialDescriptor->u.Dma.Reserved1 = 0; break;
default: IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Unexpected ResourceType (%d) in I/O Descriptor\n", ioDescriptor->Type) ); break; }
partialDescriptor->Type = ioDescriptor->Type; partialDescriptor->ShareDisposition = ioDescriptor->ShareDisposition; partialDescriptor->Flags = ioDescriptor->Flags; partialDescriptor++;
partialList->Count++; }
return STATUS_SUCCESS;}
NTSTATUSPnPBiosExtractCompatibleIDs( IN PUCHAR *DevNodeData, IN ULONG DevNodeDataLength, OUT PWSTR *CompatibleIDs, OUT ULONG *CompatibleIDsLength ){ PWCHAR idPtr; PUCHAR currentPtr, endPtr; UCHAR tagName; ULONG increment; ULONG compatibleCount;
endPtr = &(*DevNodeData)[DevNodeDataLength];
compatibleCount = 0;
for (currentPtr = *DevNodeData; currentPtr < endPtr; currentPtr += increment) {
tagName = *currentPtr;
if (tagName == TAG_COMPLETE_END) {
break; }
//
// Determine the size of the BIOS resource descriptor
//
if (!(tagName & LARGE_RESOURCE_TAG)) { increment = (USHORT)(tagName & SMALL_TAG_SIZE_MASK); increment++; // length of small tag
tagName &= SMALL_TAG_MASK; } else { increment = *(USHORT UNALIGNED *)(¤tPtr[1]); increment += 3; // length of large tag
}
if (tagName == TAG_COMPATIBLE_ID) {
compatibleCount++; } }
if (compatibleCount == 0) { *CompatibleIDs = NULL; *CompatibleIDsLength = 0;
return STATUS_SUCCESS; }
*CompatibleIDsLength = (compatibleCount * 9 + 1) * sizeof(WCHAR); *CompatibleIDs = ExAllocatePool(PagedPool, *CompatibleIDsLength);
if (*CompatibleIDs == NULL) {
*CompatibleIDsLength = 0; return STATUS_NO_MEMORY; }
idPtr = *CompatibleIDs;
for (currentPtr = *DevNodeData; currentPtr < endPtr; currentPtr += increment) {
tagName = *currentPtr;
if (tagName == TAG_COMPLETE_END) {
break; }
//
// Determine the size of the BIOS resource descriptor
//
if (!(tagName & LARGE_RESOURCE_TAG)) { increment = (USHORT)(tagName & SMALL_TAG_SIZE_MASK); increment++; // length of small tag
tagName &= SMALL_TAG_MASK; } else { increment = *(USHORT UNALIGNED *)(¤tPtr[1]); increment += 3; // length of large tag
}
if (tagName == TAG_COMPATIBLE_ID) {
*idPtr = '*'; PnPBiosExpandProductId(¤tPtr[1], &idPtr[1]); idPtr += 9; } }
*idPtr++ = '\0'; // Extra NUL for REG_MULTI_SZ
*CompatibleIDsLength = (ULONG)(idPtr - *CompatibleIDs) * sizeof(WCHAR);
return STATUS_SUCCESS;}
NTSTATUSPnPBiosTranslateInfo( IN VOID *BiosInfo, IN ULONG BiosInfoLength, OUT PBIOS_DEVNODE_INFO *DevNodeInfoList, OUT ULONG *NumberNodes )/*++
Routine Description:
Translates the devnode info retrieved from the BIOS.
Arguments:
BiosInfo - The PnP BIOS Installation Check Structure followed by the DevNode Structures reported by the BIOS. The detailed format is documented in the PnP BIOS spec.
BiosInfoLength - Length in bytes of the block whose address is stored in BiosInfo.
DevNodeInfoList - Dynamically allocated array of BIOS_DEVNODE_INFO structures, one for each device reported by the BIOS. The information supplied by the BIOS: device ID, type, current resources, and supported configurations is converted into a more useful format. For example the current resource allocation is converted from ISA PnP descriptors into an IO_RESOURCE_REQUIREMENTS_LIST and then into a CM_RESOURCE_LIST for storing into the BootConfig registry value.
NumberNodes - Number of BIOS_DEVNODE_INFO elements pointed to by DevNodeInfoList.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ PCM_PNP_BIOS_INSTALLATION_CHECK biosInstallCheck; PCM_PNP_BIOS_DEVICE_NODE devNodeHeader; PBIOS_DEVNODE_INFO devNodeInfo;
PIO_RESOURCE_REQUIREMENTS_LIST tempResReqList;
PUCHAR currentPtr; LONG lengthRemaining;
LONG remainingNodeLength;
ULONG numNodes; ULONG nodeIndex; PUCHAR configPtr; ULONG configListLength; NTSTATUS status; ULONG convertFlags = 0; PKEY_VALUE_FULL_INFORMATION fullValueInfo;
//
// Make sure the data is at least large enough to hold the BIOS Installation
// Check structure and check that the PnP signature is correct.
//
if (BiosInfoLength < sizeof(CM_PNP_BIOS_INSTALLATION_CHECK)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "BiosInfoLength (%d) is smaller than sizeof(PNPBIOS_INSTALLATION_CHECK) (%d)\n", BiosInfoLength, sizeof(CM_PNP_BIOS_INSTALLATION_CHECK)) );
return STATUS_UNSUCCESSFUL; }
biosInstallCheck = (PCM_PNP_BIOS_INSTALLATION_CHECK)BiosInfo;
if (biosInstallCheck->Signature[0] != '$' || biosInstallCheck->Signature[1] != 'P' || biosInstallCheck->Signature[2] != 'n' || biosInstallCheck->Signature[3] != 'P') {
return STATUS_UNSUCCESSFUL; } //
// First scan the data and count the devnodes to determine the size of our
// allocated data structures.
//
currentPtr = (PUCHAR)BiosInfo + biosInstallCheck->Length; lengthRemaining = BiosInfoLength - biosInstallCheck->Length;
for (numNodes = 0; lengthRemaining > sizeof(CM_PNP_BIOS_DEVICE_NODE); numNodes++) {
devNodeHeader = (PCM_PNP_BIOS_DEVICE_NODE)currentPtr;
if (devNodeHeader->Size > lengthRemaining) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Node # %d, invalid size (%d), length remaining (%d)\n", devNodeHeader->Node, devNodeHeader->Size, lengthRemaining) );
return STATUS_UNSUCCESSFUL; }
currentPtr += devNodeHeader->Size; lengthRemaining -= devNodeHeader->Size; }
//
// Allocate the list of translated devnodes.
//
devNodeInfo = ExAllocatePool( PagedPool, numNodes * sizeof(BIOS_DEVNODE_INFO) );
if (devNodeInfo == NULL) {
return STATUS_NO_MEMORY; }
//
// Should we force all fixed IO decodes to 16bit?
//
fullValueInfo = PnPGetBiosInfoValue(DECODEINFO_VALUE_NAME); if (fullValueInfo) {
if (fullValueInfo->Type == REG_DWORD && fullValueInfo->DataLength == sizeof(ULONG) && *(PULONG)((PUCHAR)fullValueInfo + fullValueInfo->DataOffset)) {
convertFlags |= PPCONVERTFLAG_FORCE_FIXED_IO_16BIT_DECODE; } ExFreePool(fullValueInfo); } //
// Now scan the data translating the info for each devnode into an entry in
// our devNodeInfo array.
//
currentPtr = (PUCHAR)BiosInfo + biosInstallCheck->Length; lengthRemaining = BiosInfoLength - biosInstallCheck->Length;
for (nodeIndex = 0; nodeIndex < numNodes; nodeIndex++) {
devNodeHeader = (PCM_PNP_BIOS_DEVICE_NODE)currentPtr;
if (devNodeHeader->Size > lengthRemaining) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Node # %d, invalid size (%d), length remaining (%d)\n", devNodeHeader->Node, devNodeHeader->Size, lengthRemaining) );
break; }
//
// We use the Product ID field as the DeviceID key name. So we insert
// an initial asterisk so we don't have to copy and mangle it later.
//
devNodeInfo[nodeIndex].ProductId[0] = '*';
PnPBiosExpandProductId((PUCHAR)&devNodeHeader->ProductId, &devNodeInfo[nodeIndex].ProductId[1]);
devNodeInfo[nodeIndex].ProductId[9] = '\0'; // Extra NUL for REG_MULTI_SZ
//
// The handle is used as part of the Instance ID
devNodeInfo[nodeIndex].Handle = devNodeHeader->Node;
//
// The type code and attributes aren't currently used but are copied
// for completeness.
//
RtlCopyMemory( &devNodeInfo[nodeIndex].TypeCode, devNodeHeader->DeviceType, sizeof(devNodeInfo[nodeIndex].TypeCode) );
devNodeInfo[nodeIndex].Attributes = devNodeHeader->DeviceAttributes;
//
// Replaces will eventually be set to the path of the Firmware
// Enumerated devnode which duplicates this one (if a duplicate exists).
//
devNodeInfo[nodeIndex].Replaces = NULL;
//
// CompatibleIDs will be set to the list of compatible IDs.
//
devNodeInfo[nodeIndex].CompatibleIDs = NULL;
//
// Convert the allocated resources from ISA PnP resource descriptor
// format to an IO_RESOURCE_REQUIREMENTS_LIST.
//
configPtr = currentPtr + sizeof(*devNodeHeader); remainingNodeLength = devNodeHeader->Size - sizeof(*devNodeHeader);
devNodeInfo[nodeIndex].BootConfig = NULL; devNodeInfo[nodeIndex].FirmwareDisabled = FALSE;
status = PpBiosResourcesToNtResources( 0, /* BusNumber */ 0, /* SlotNumber */ &configPtr, /* BiosData */ convertFlags, /* ConvertFlags */ &tempResReqList, /* ReturnedList */ &configListLength); /* ReturnedLength */
remainingNodeLength = devNodeHeader->Size - (LONG)(configPtr - (PUCHAR)devNodeHeader);
if (NT_SUCCESS( status )) {
if (tempResReqList != NULL) {
PpFilterNtResource ( devNodeInfo[nodeIndex].ProductId, tempResReqList );
//
// Now we need to convert from a IO_RESOURCE_REQUIREMENTS_LIST to a
// CM_RESOURCE_LIST.
//
status = PnPBiosIoResourceListToCmResourceList( tempResReqList, &devNodeInfo[nodeIndex].BootConfig, &devNodeInfo[nodeIndex].BootConfigLength);
status = PnPBiosCheckForHardwareDisabled(tempResReqList,&devNodeInfo[nodeIndex].FirmwareDisabled); ExFreePool( tempResReqList ); }
} else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error converting allocated resources for devnode # %d, status = %8.8X\n", devNodeInfo[nodeIndex].Handle, status) ); }
//
// Convert the supported resource configurations from ISA PnP resource
// descriptor format to an IO_RESOURCE_REQUIREMENTS_LIST.
//
status = PpBiosResourcesToNtResources( 0, /* BusNumber */ 0, /* SlotNumber */ &configPtr, /* BiosData */ convertFlags | PPCONVERTFLAG_SET_RESTART_LCPRI, /* ConvertFlags */ &devNodeInfo[nodeIndex].BasicConfig, /* ReturnedList */ &devNodeInfo[nodeIndex].BasicConfigLength ); /* ReturnedLength */
remainingNodeLength = devNodeHeader->Size - (LONG)(configPtr - (PUCHAR)devNodeHeader);
if (!NT_SUCCESS( status )) {
devNodeInfo[nodeIndex].BasicConfig = NULL;
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error converting allowed resources for devnode # %d, status = %8.8X\n", devNodeInfo[nodeIndex].Handle, status) ); } else {
PpFilterNtResource ( devNodeInfo[nodeIndex].ProductId, devNodeInfo[nodeIndex].BasicConfig ); }
//
// Convert the list of compatible IDs if present
//
ASSERT(remainingNodeLength >= 0);
status = PnPBiosExtractCompatibleIDs( &configPtr, // BiosData
(ULONG)remainingNodeLength, &devNodeInfo[nodeIndex].CompatibleIDs, &devNodeInfo[nodeIndex].CompatibleIDsLength );
currentPtr += devNodeHeader->Size; lengthRemaining -= devNodeHeader->Size;
}
*DevNodeInfoList = devNodeInfo; *NumberNodes = numNodes; return STATUS_SUCCESS;}
LONGPnPBiosFindMatchingDevNode( IN PWCHAR MapperName, IN PCM_RESOURCE_LIST ResourceList, IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes )/*++
Routine Description:
Given a list of resources this routine finds an entry in the DevNodeInfoList whose BootConfig resources match. A match is defined as having at least overlapping I/O Ports or Memory Ranges. If ResourceList doesn't include any I/O Ports or Memory Ranges then a match is defined as exactly the same interrupts and/or DMA channels.
This routine is used to find PnP BIOS reported devices which match devices created by the Firmware Mapper.
Arguments:
ResourceList - Pointer to CM_RESOURCE_LIST describing the resources currently used by the device for which a match is being searched.
DevNodeInfoList - Array of BIOS_DEVNODE_INFO structures, one for each device reported by the BIOS.
NumberNodes - Number of BIOS_DEVNODE_INFO elements pointed to by DevNodeInfoList.
Return Value:
Index of the entry in DevNodeInfoList whose BootConfig matches the resources listed in ResourceList. If no matching entry is found then -1 is returned.
--*/{ PCM_PARTIAL_RESOURCE_LIST sourceList; PCM_PARTIAL_RESOURCE_LIST targetList; PCM_PARTIAL_RESOURCE_DESCRIPTOR sourceDescriptor; PCM_PARTIAL_RESOURCE_DESCRIPTOR targetDescriptor; ULONG nodeIndex, sourceIndex, targetIndex; LONG firstMatch = -1; LONG bestMatch = -1; ULONG numResourcesMatch; ULONG score, possibleScore = 0, bestScore = 0; PWCHAR idPtr; BOOLEAN idsMatch; BOOLEAN bestIdsMatch = FALSE;
#if DEBUG_DUP_MATCH
CHAR sourceMapping[256]; CHAR targetMapping[256];#endif
//
// In order to simplify the problem we assume there is only one list. This
// assumption holds true in the BootConfig structures generated by the
// current firmware mapper.
//
ASSERT( ResourceList->Count == 1 );
sourceList = &ResourceList->List[0].PartialResourceList;
#if DEBUG_DUP_MATCH
//
// For debugging purposes we keep track of which resource entries map to
// each other. These relationships are stored in a fixed CHAR array, thus
// the restriction on the number of descriptors.
//
ASSERT( sourceList->Count < 255 );#endif
//
// Loop through each devnode and try and match it to the source resource
// list.
//
for (nodeIndex = 0; nodeIndex < NumberNodes; nodeIndex++) {
if (DevNodeInfoList[ nodeIndex ].BootConfig == NULL) {
continue; }
//
// We found at least one potential match. Let's double check if
// the PNP ids also match. We use a lack of ID match to disqualify
// entries which don't match at least I/O ports or memory.
//
idPtr = DevNodeInfoList[ nodeIndex ].ProductId;
if (RtlCompareMemory( idPtr, MapperName, 12 ) != 12) {
idPtr = DevNodeInfoList[ nodeIndex ].CompatibleIDs;
if (idPtr != NULL) {
while (*idPtr != '\0') {
if (RtlCompareMemory( idPtr, MapperName, 12 ) == 12) {
break; }
idPtr += 9; }
if (*idPtr == '\0') {
idPtr = NULL; } } }
idsMatch = (BOOLEAN)(idPtr != NULL);
ASSERT( DevNodeInfoList[ nodeIndex ].BootConfig->Count == 1 );
targetList = &DevNodeInfoList[ nodeIndex ].BootConfig->List[0].PartialResourceList;
#if DEBUG_DUP_MATCH
RtlFillMemory( sourceMapping, sizeof(sourceMapping), -1 ); RtlFillMemory( targetMapping, sizeof(targetMapping), -1 );#endif
numResourcesMatch = 0; possibleScore = 0; score = 0;
//
// Loop through each source descriptor (resource) and try and match it
// to one of this devnode's descriptors.
//
for (sourceIndex = 0; sourceIndex < sourceList->Count; sourceIndex++) {
sourceDescriptor = &sourceList->PartialDescriptors[sourceIndex];
//
// We are recalculating the possible score unnecessarily each time
// we process a devnode. We might save a small amount of time by
// looping through the source descriptors once at the beginning but
// its not clear it would make all that much difference given the
// few devices reported by the BIOS.
//
switch (sourceDescriptor->Type) {
case CmResourceTypePort: possibleScore += 0x1100; break;
case CmResourceTypeInterrupt: possibleScore += 0x0001; break;
case CmResourceTypeMemory: possibleScore += 0x1100; break;
case CmResourceTypeDma: possibleScore += 0x0010; break;
default: continue; }
//
// Try to find a resource in the target devnode which matches the
// current source resource.
//
for (targetIndex = 0; targetIndex < targetList->Count; targetIndex++) {
targetDescriptor = &targetList->PartialDescriptors[targetIndex];
if (sourceDescriptor->Type == targetDescriptor->Type) { switch (sourceDescriptor->Type) { case CmResourceTypePort: if ((sourceDescriptor->u.Port.Start.LowPart + sourceDescriptor->u.Port.Length) <= targetDescriptor->u.Port.Start.LowPart || (targetDescriptor->u.Port.Start.LowPart + targetDescriptor->u.Port.Length) <= sourceDescriptor->u.Port.Start.LowPart) { continue; } if (sourceDescriptor->u.Port.Start.LowPart == targetDescriptor->u.Port.Start.LowPart && sourceDescriptor->u.Port.Length == targetDescriptor->u.Port.Length) {
score += 0x1100;
} else {
IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "Overlapping port resources, source = %4.4X-%4.4X, target = %4.4X-%4.4X\n", sourceDescriptor->u.Port.Start.LowPart, sourceDescriptor->u.Port.Start.LowPart + sourceDescriptor->u.Port.Length - 1, targetDescriptor->u.Port.Start.LowPart, targetDescriptor->u.Port.Start.LowPart + targetDescriptor->u.Port.Length - 1) );
score += 0x1000;
} break;
case CmResourceTypeInterrupt: if (sourceDescriptor->u.Interrupt.Level != targetDescriptor->u.Interrupt.Level) { continue; } score += 0x0001; break;
case CmResourceTypeMemory: if ((sourceDescriptor->u.Memory.Start.LowPart + sourceDescriptor->u.Memory.Length) <= targetDescriptor->u.Memory.Start.LowPart || (targetDescriptor->u.Memory.Start.LowPart + targetDescriptor->u.Memory.Length) <= sourceDescriptor->u.Memory.Start.LowPart) {
continue; } if (sourceDescriptor->u.Memory.Start.LowPart == targetDescriptor->u.Memory.Start.LowPart && sourceDescriptor->u.Memory.Length == targetDescriptor->u.Memory.Length) {
score += 0x1100;
} else {
score += 0x1000;
} break;
case CmResourceTypeDma: if (sourceDescriptor->u.Dma.Channel != targetDescriptor->u.Dma.Channel) {
continue; } score += 0x0010; break;
} break; } }
if (targetIndex < targetList->Count) {#if DEBUG_DUP_MATCH
sourceMapping[sourceIndex] = (CHAR)targetIndex; targetMapping[targetIndex] = (CHAR)sourceIndex;#endif
numResourcesMatch++; } }
if (numResourcesMatch != 0) { if (firstMatch == -1) { firstMatch = nodeIndex; }
if ((score > bestScore) || (score == bestScore && !bestIdsMatch && idsMatch)) { bestScore = score; bestMatch = nodeIndex; bestIdsMatch = idsMatch; } } }
if (bestMatch != -1) {
if (bestScore == possibleScore) {
IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "Perfect match, score = %4.4X, possible = %4.4X, index = %d\n", bestScore, possibleScore, bestMatch) );
if (possibleScore < 0x1000 && !bestIdsMatch) {
bestMatch = -1;
}
} else if (possibleScore > 0x1000 && bestScore >= 0x1000) {
IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "Best match is close enough, score = %4.4X, possible = %4.4X, index = %d\n", bestScore, possibleScore, bestMatch) );
} else {
IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "Best match is less than threshold, score = %4.4X, possible = %4.4X, index = %d\n", bestScore, possibleScore, bestMatch) );
bestMatch = -1;
} }
return bestMatch;}
NTSTATUSPnPBiosEliminateDupes( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes )/*++
Routine Description:
This routine enumerates the Firmware Mapper generated devices under Enum\Root. Those that match entries in DevNodeInfoList have their registry key name stored in the DevNodeInfoList entry so that the Firmare Mapper instance may be removed later.
Arguments:
DevNodeInfoList - Array of BIOS_DEVNODE_INFO structures, one for each device reported by the BIOS.
NumberNodes - Number of BIOS_DEVNODE_INFO elements pointed to by DevNodeInfoList.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ UNICODE_STRING enumRootKeyName, valueName; HANDLE enumRootKey; PKEY_BASIC_INFORMATION deviceBasicInfo = NULL; ULONG deviceBasicInfoLength; UNICODE_STRING deviceKeyName; HANDLE deviceKey = NULL; PKEY_BASIC_INFORMATION instanceBasicInfo = NULL; ULONG instanceBasicInfoLength; WCHAR logConfStr[DEFAULT_STRING_SIZE]; UNICODE_STRING logConfKeyName; HANDLE logConfKey = NULL;
PKEY_VALUE_PARTIAL_INFORMATION valueInfo = NULL; ULONG valueInfoLength; ULONG returnedLength;
ULONG deviceIndex, instanceIndex; NTSTATUS status = STATUS_UNSUCCESSFUL;
PiWstrToUnicodeString(&enumRootKeyName, ENUMROOT_KEY_NAME);
status = IopOpenRegistryKeyEx( &enumRootKey, NULL, &enumRootKeyName, KEY_READ );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S, status = %8.8X\n", ENUMROOT_KEY_NAME, status) );
return STATUS_UNSUCCESSFUL; }
deviceBasicInfoLength = sizeof(KEY_BASIC_INFORMATION) + DEFAULT_STRING_SIZE; deviceBasicInfo = ExAllocatePool(PagedPool, deviceBasicInfoLength);
instanceBasicInfoLength = sizeof(KEY_BASIC_INFORMATION) + DEFAULT_STRING_SIZE; instanceBasicInfo = ExAllocatePool(PagedPool, instanceBasicInfoLength);
valueInfoLength = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + DEFAULT_STRING_SIZE; valueInfo = ExAllocatePool(PagedPool, valueInfoLength);
if (deviceBasicInfo != NULL && instanceBasicInfo != NULL && valueInfo != NULL) {
for (deviceIndex = 0; ; deviceIndex++) {
status = ZwEnumerateKey( enumRootKey, deviceIndex, KeyBasicInformation, deviceBasicInfo, deviceBasicInfoLength, &returnedLength);
if (!NT_SUCCESS(status)) {
if (status == STATUS_BUFFER_TOO_SMALL || status == STATUS_BUFFER_OVERFLOW) {
continue;
} else if (status != STATUS_NO_MORE_ENTRIES) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not enumerate under key %S, status = %8.8X\n", ENUMROOT_KEY_NAME, status) ); } else { status = STATUS_SUCCESS; } break; }
if (deviceBasicInfo->Name[0] != '*') { continue; }
deviceBasicInfo->Name[ deviceBasicInfo->NameLength / 2 ] = L'\0'; RtlInitUnicodeString(&deviceKeyName, deviceBasicInfo->Name);
status = IopOpenRegistryKeyEx( &deviceKey, enumRootKey, &deviceKeyName, KEY_READ );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S, status = %8.8X\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name, status) ); break; }
for (instanceIndex = 0; ; instanceIndex++) {
status = ZwEnumerateKey( deviceKey, instanceIndex, KeyBasicInformation, instanceBasicInfo, instanceBasicInfoLength, &returnedLength);
if (!NT_SUCCESS(status)) {
if (status == STATUS_BUFFER_TOO_SMALL || status == STATUS_BUFFER_OVERFLOW) {
continue;
} else if (status != STATUS_NO_MORE_ENTRIES) { IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not enumerate under key %S\\%S, status = %8.8X\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name, status) ); } else { status = STATUS_SUCCESS; } break; }
if (RtlCompareMemory( instanceBasicInfo->Name, INSTANCE_ID_PREFIX, sizeof(INSTANCE_ID_PREFIX) - sizeof(UNICODE_NULL) ) == (sizeof(INSTANCE_ID_PREFIX) - sizeof(UNICODE_NULL))) {
continue; }
instanceBasicInfo->Name[ instanceBasicInfo->NameLength / 2 ] = L'\0';
RtlCopyMemory( logConfStr, instanceBasicInfo->Name, instanceBasicInfo->NameLength );
logConfStr[ instanceBasicInfo->NameLength / 2 ] = L'\\';
RtlCopyMemory( &logConfStr[ instanceBasicInfo->NameLength / 2 + 1 ], REGSTR_KEY_LOGCONF, sizeof(REGSTR_KEY_LOGCONF) );
RtlInitUnicodeString( &logConfKeyName, logConfStr );
status = IopOpenRegistryKeyEx( &logConfKey, deviceKey, &logConfKeyName, KEY_READ );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S\\%S, status = %8.8X\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name, logConfStr, status) ); continue; }
PiWstrToUnicodeString( &valueName, REGSTR_VAL_BOOTCONFIG );
status = ZwQueryValueKey( logConfKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength );
if (!NT_SUCCESS(status)) {
if (status == STATUS_BUFFER_TOO_SMALL || status == STATUS_BUFFER_OVERFLOW) {
ExFreePool( valueInfo );
valueInfoLength = returnedLength; valueInfo = ExAllocatePool( PagedPool, valueInfoLength );
if (valueInfo != NULL) {
status = ZwQueryValueKey( logConfKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength ); } else { IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error allocating memory for %S\\%S\\LogConf\\BootConfig value\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name) ); valueInfoLength = 0; status = STATUS_NO_MEMORY;
break; }
} else { IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error retrieving %S\\%S\\LogConf\\BootConfig size, status = %8.8X\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name, status) );
status = STATUS_UNSUCCESSFUL; } }
if (NT_SUCCESS( status )) { PCM_RESOURCE_LIST resourceList; LONG matchingIndex;
resourceList = (PCM_RESOURCE_LIST)valueInfo->Data;
matchingIndex = PnPBiosFindMatchingDevNode( deviceBasicInfo->Name, resourceList, DevNodeInfoList, NumberNodes );
if (matchingIndex != -1) {
DevNodeInfoList[ matchingIndex ].Replaces = ExAllocatePool( PagedPool, deviceBasicInfo->NameLength + instanceBasicInfo->NameLength + 2 * sizeof(UNICODE_NULL));
if (DevNodeInfoList[ matchingIndex ].Replaces != NULL) {
RtlCopyMemory( DevNodeInfoList[ matchingIndex ].Replaces, deviceBasicInfo->Name, deviceBasicInfo->NameLength );
DevNodeInfoList[ matchingIndex ].Replaces[ deviceBasicInfo->NameLength / 2 ] = '\\';
RtlCopyMemory( &DevNodeInfoList[ matchingIndex ].Replaces[ deviceBasicInfo->NameLength / 2 + 1 ], instanceBasicInfo->Name, instanceBasicInfo->NameLength );
DevNodeInfoList[ matchingIndex ].Replaces[ (deviceBasicInfo->NameLength + instanceBasicInfo->NameLength) / 2 + 1 ] = '\0';
IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "Match found: %S\\%S%d replaces %S\n", DevNodeInfoList[ matchingIndex ].ProductId, INSTANCE_ID_PREFIX, DevNodeInfoList[ matchingIndex ].Handle, DevNodeInfoList[ matchingIndex ].Replaces) ); } else { IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error allocating memory for %S\\%S%d\\Replaces\n", DevNodeInfoList[ matchingIndex ].ProductId, INSTANCE_ID_PREFIX, DevNodeInfoList[ matchingIndex ].Handle) ); } } else { IopDbgPrint( (IOP_MAPPER_INFO_LEVEL, "No matching PnP Bios DevNode found for FW Enumerated device %S\\%S\n", deviceBasicInfo->Name, instanceBasicInfo->Name) ); } } else { IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Error retrieving %S\\%S\\%S\\BootConfig, status = %8.8X\n", ENUMROOT_KEY_NAME, deviceBasicInfo->Name, logConfStr, status) ); }
ZwClose(logConfKey);
logConfKey = NULL; }
ZwClose(deviceKey);
deviceKey = NULL; } } else { status = STATUS_NO_MEMORY; }
if (valueInfo != NULL) { ExFreePool(valueInfo); }
if (instanceBasicInfo != NULL) { ExFreePool(instanceBasicInfo); }
if (deviceBasicInfo != NULL) { ExFreePool(deviceBasicInfo); }
if (logConfKey != NULL) { ZwClose(logConfKey); }
if (deviceKey != NULL) { ZwClose(deviceKey); }
ZwClose(enumRootKey);
return status;}
PWCHARPnPBiosGetDescription( IN PBIOS_DEVNODE_INFO DevNodeInfoEntry ){ ULONG class, subClass; LONG index; CLASSDATA const*classDescriptions; LONG descriptionCount;
class = DevNodeInfoEntry->TypeCode[0]; subClass = (DevNodeInfoEntry->TypeCode[1] << 8) | DevNodeInfoEntry->TypeCode[2];
if (class > 0 && class < CLASSLIST_COUNT) {
classDescriptions = ClassDescriptionsList[ class ].Descriptions; descriptionCount = ClassDescriptionsList[ class ].Count;
//
// The last description entry is the default so there is no use
// comparing it, if we get that far just use it.
//
for (index = 0; index < (descriptionCount - 1); index++) {
if (subClass == classDescriptions[ index ].Value) {
break; } }
return classDescriptions[ index ].Description; }
return DEFAULT_DEVICE_DESCRIPTION;}
NTSTATUSPnPBiosCopyDeviceParamKey( IN HANDLE EnumRootKey, IN PWCHAR SourcePath, IN PWCHAR DestinationPath )/*++
Routine Description:
Copy the Device Parameters key from the firmware mapper node in DevNodeInfo->Replaces to the BIOS mapper node represented by DevNodeInfo.
Arguments:
EnumRootKey - Handle to Enum\Root.
SourcePath - Instance path of FW Mapper node relative to Enum\Root.
DestinationKey - Handle to destination instance key.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ NTSTATUS status; UNICODE_STRING sourceInstanceKeyName; HANDLE sourceInstanceKey = NULL; UNICODE_STRING deviceParamKeyName; HANDLE sourceDeviceParamKey = NULL; HANDLE destinationDeviceParamKey = NULL; UNICODE_STRING destinationInstanceKeyName; PKEY_VALUE_FULL_INFORMATION valueFullInfo = NULL; ULONG valueFullInfoLength; ULONG resultLength; UNICODE_STRING valueName; ULONG index;
RtlInitUnicodeString( &sourceInstanceKeyName, SourcePath ); status = IopOpenRegistryKeyEx( &sourceInstanceKey, EnumRootKey, &sourceInstanceKeyName, KEY_ALL_ACCESS ); if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "PnPBiosCopyDeviceParamKey() - Could not open source instance key %S, status = %8.8X\n", SourcePath, status) );
return status; }
PiWstrToUnicodeString(&deviceParamKeyName, REGSTR_KEY_DEVICEPARAMETERS); status = IopOpenRegistryKeyEx( &sourceDeviceParamKey, sourceInstanceKey, &deviceParamKeyName, KEY_ALL_ACCESS ); if (!NT_SUCCESS(status)) {
if (status != STATUS_OBJECT_NAME_NOT_FOUND) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "PnPBiosCopyDeviceParamKey() - Could not open source device parameter key %S\\%S, status = %8.8X\n", SourcePath, deviceParamKeyName.Buffer, status) ); }
goto Cleanup; }
RtlInitUnicodeString(&destinationInstanceKeyName, DestinationPath); status = IopOpenDeviceParametersSubkey( &destinationDeviceParamKey, EnumRootKey, &destinationInstanceKeyName, KEY_ALL_ACCESS ); if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "PnPBiosCopyDeviceParamKey() - Could not open destination device parameter key %S\\%S, status = %8.8X\n", DestinationPath, REGSTR_KEY_DEVICEPARAMETERS, status) );
goto Cleanup; }
valueFullInfoLength = sizeof(KEY_VALUE_FULL_INFORMATION) + DEFAULT_STRING_SIZE + DEFAULT_VALUE_SIZE; valueFullInfo = ExAllocatePool(PagedPool, valueFullInfoLength);
if (valueFullInfo == NULL) {
goto Cleanup; }
for (index = 0; ; index++) {
status = ZwEnumerateValueKey( sourceDeviceParamKey, index, KeyValueFullInformation, valueFullInfo, valueFullInfoLength, &resultLength ); if (NT_SUCCESS(status)) {
UNICODE_STRING sourcePathString; UNICODE_STRING serialPrefixString; UNICODE_STRING portNameString;
valueName.Length = (USHORT)valueFullInfo->NameLength; valueName.MaximumLength = valueName.Length; valueName.Buffer = valueFullInfo->Name;
RtlInitUnicodeString(&sourcePathString, SourcePath); PiWstrToUnicodeString(&serialPrefixString, L"*PNP0501");
if (sourcePathString.Length > serialPrefixString.Length) {
sourcePathString.Length = serialPrefixString.Length; }
if (RtlCompareUnicodeString(&sourcePathString, &serialPrefixString, TRUE) == 0) {
PiWstrToUnicodeString(&portNameString, L"DosDeviceName");
if ( valueName.Length == 16 && RtlCompareUnicodeString(&valueName, &portNameString, TRUE) == 0) { //
// ComPortDBRemove(SourcePath, &unicodeValue);
//
ComPortDBAdd(destinationDeviceParamKey, (PWSTR)((PUCHAR)valueFullInfo + valueFullInfo->DataOffset)); continue; } } status = ZwSetValueKey( destinationDeviceParamKey, &valueName, valueFullInfo->TitleIndex, valueFullInfo->Type, (PUCHAR)valueFullInfo + valueFullInfo->DataOffset, valueFullInfo->DataLength ); } else {
if (status == STATUS_BUFFER_OVERFLOW) {
ExFreePool(valueFullInfo);
valueFullInfoLength = resultLength; valueFullInfo = ExAllocatePool(PagedPool, valueFullInfoLength);
if (valueFullInfo == NULL) {
status = STATUS_NO_MEMORY; } else {
index--; continue; } } else if (status != STATUS_NO_MORE_ENTRIES) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not enumerate under key %S\\%S, status = %8.8X\n", SourcePath, deviceParamKeyName.Buffer, status) ); } else {
status = STATUS_SUCCESS; }
break; } }
Cleanup:
if (sourceInstanceKey != NULL) {
ZwClose(sourceInstanceKey); }
if (sourceDeviceParamKey != NULL) {
ZwClose(sourceDeviceParamKey); }
if (destinationDeviceParamKey != NULL) {
ZwClose(destinationDeviceParamKey); }
if (valueFullInfo != NULL) {
ExFreePool(valueFullInfo); }
return status;}
NTSTATUSPnPBiosWriteInfo( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes )/*++
Routine Description:
Creates an entry under Enum\Root for each DevNodeInfoList element. Also removes any duplicate entries which were created by the Firmware Mapper.
Note: Currently entries for the Keyboard, Mouse, and PCI bus are ignored.
Arguments:
DevNodeInfoList - Array of BIOS_DEVNODE_INFO structures, one for each device reported by the BIOS.
NumberNodes - Number of BIOS_DEVNODE_INFO elements pointed to by DevNodeInfoList.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ PKEY_VALUE_FULL_INFORMATION excludeList = NULL; UNICODE_STRING enumRootKeyName; HANDLE enumRootKey; WCHAR instanceNameStr[DEFAULT_STRING_SIZE]; UNICODE_STRING instanceKeyName; HANDLE instanceKey; UNICODE_STRING controlKeyName; HANDLE controlKey; UNICODE_STRING logConfKeyName; HANDLE logConfKey; UNICODE_STRING valueName; ULONG dwordValue; ULONG disposition; PWCHAR descriptionStr; ULONG descriptionStrLength; ULONG nodeIndex; NTSTATUS status; BOOLEAN isNewDevice;
PiWstrToUnicodeString(&enumRootKeyName, ENUMROOT_KEY_NAME); status = IopOpenRegistryKeyEx( &enumRootKey, NULL, &enumRootKeyName, KEY_ALL_ACCESS ); if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S, status = %8.8X\n", ENUMROOT_KEY_NAME, status) );
return STATUS_UNSUCCESSFUL; } //
// Reasons why a node might be excluded (i.e not enumerated)
// * included in ExcludedDevices array (non-conditional)
// * included in CCS\Control\BiosInfo\PnpBios\DisableNodes via biosinfo.inf
// * resources are disabled and device is included in the
// ExcludeIfDisabled array
//
excludeList = PnPGetBiosInfoValue(DISABLENODES_VALUE_NAME); for (nodeIndex = 0; nodeIndex < NumberNodes; nodeIndex++) {
//
// Check if this node is in the 'ignore on this machine' list.
//
if ( excludeList && PnPBiosIgnoreNode( &DevNodeInfoList[ nodeIndex ].ProductId[1], (PWCHAR)((PUCHAR)excludeList+excludeList->DataOffset))) {
continue; }
// Checking for nodes we always exclude
if ( PnPBiosCheckForExclusion( ExcludedDevices, EXCLUDED_DEVICES_COUNT, DevNodeInfoList[ nodeIndex ].ProductId, DevNodeInfoList[ nodeIndex ].CompatibleIDs)) { //
// If we are skipping the device, we need to first copy the decode
// info that the BIOS supplied to the ntdetected device's Boot
// Config which was generated by the FW mapper.
//
PnPBiosCopyIoDecode( enumRootKey, &DevNodeInfoList[ nodeIndex ] );
//
// Skip excluded devices, ie busses, mice and keyboards for now.
//
continue; }
// Checking for nodes we exclude if disabled
if ( DevNodeInfoList[ nodeIndex ].FirmwareDisabled && PnPBiosCheckForExclusion( ExcludeIfDisabled, EXCLUDE_DISABLED_COUNT, DevNodeInfoList[ nodeIndex ].ProductId, NULL)) { continue; }
StringCbPrintfW( instanceNameStr, sizeof(instanceNameStr), L"%s\\%s%d", DevNodeInfoList[ nodeIndex ].ProductId, INSTANCE_ID_PREFIX, DevNodeInfoList[ nodeIndex ].Handle); instanceNameStr[(sizeof(instanceNameStr) / sizeof(instanceNameStr[0])) - 1] = UNICODE_NULL;
RtlInitUnicodeString(&instanceKeyName, instanceNameStr); status = IopCreateRegistryKeyEx( &instanceKey, enumRootKey, &instanceKeyName, KEY_ALL_ACCESS, REG_OPTION_NON_VOLATILE, &disposition ); if (NT_SUCCESS(status)) { //
// If the key already exists because it was explicitly migrated
// during textmode setup, we should still consider it a "new key".
//
if (disposition != REG_CREATED_NEW_KEY) {
PKEY_VALUE_FULL_INFORMATION keyValueInformation; UNICODE_STRING unicodeString;
status = IopGetRegistryValue(instanceKey, REGSTR_VALUE_MIGRATED, &keyValueInformation); if (NT_SUCCESS(status)) {
if ((keyValueInformation->Type == REG_DWORD) && (keyValueInformation->DataLength == sizeof(ULONG)) && ((*(PULONG)KEY_VALUE_DATA(keyValueInformation)) != 0)) {
disposition = REG_CREATED_NEW_KEY; } ExFreePool(keyValueInformation);
PiWstrToUnicodeString(&unicodeString, REGSTR_VALUE_MIGRATED); ZwDeleteValueKey(instanceKey, &unicodeString); } }
isNewDevice = (BOOLEAN)(disposition == REG_CREATED_NEW_KEY); if (isNewDevice) {
PiWstrToUnicodeString( &valueName, L"DeviceDesc" ); descriptionStr = PnPBiosGetDescription( &DevNodeInfoList[ nodeIndex ] ); descriptionStrLength = (ULONG)(wcslen(descriptionStr) * 2 + sizeof(UNICODE_NULL));
status = ZwSetValueKey( instanceKey, &valueName, 0, REG_SZ, descriptionStr, descriptionStrLength ); }
dwordValue = 1; PiWstrToUnicodeString(&valueName, REGSTR_VAL_FIRMWAREIDENTIFIED); status = ZwSetValueKey( instanceKey, &valueName, 0, REG_DWORD, &dwordValue, sizeof(dwordValue) );
if (isNewDevice) {
PiWstrToUnicodeString( &valueName, REGSTR_VALUE_HARDWAREID); status = ZwSetValueKey( instanceKey, &valueName, 0, REG_MULTI_SZ, DevNodeInfoList[ nodeIndex ].ProductId, sizeof(DevNodeInfoList[nodeIndex].ProductId));
if (DevNodeInfoList[ nodeIndex ].CompatibleIDs != NULL) {
PiWstrToUnicodeString( &valueName, REGSTR_VALUE_COMPATIBLEIDS); status = ZwSetValueKey( instanceKey, &valueName, 0, REG_MULTI_SZ, DevNodeInfoList[ nodeIndex ].CompatibleIDs, DevNodeInfoList[ nodeIndex ].CompatibleIDsLength); } }
PiWstrToUnicodeString( &valueName, L"Replaces" );
if (DevNodeInfoList[ nodeIndex ].Replaces != NULL) {
status = ZwSetValueKey( instanceKey, &valueName, 0, REG_SZ, DevNodeInfoList[ nodeIndex ].Replaces, (ULONG)(wcslen(DevNodeInfoList[ nodeIndex ].Replaces) * 2 + sizeof(UNICODE_NULL)) );
} else if (!isNewDevice) {
status = ZwDeleteValueKey( instanceKey, &valueName ); }
PiWstrToUnicodeString( &controlKeyName, REGSTR_KEY_DEVICECONTROL ); status = IopCreateRegistryKeyEx( &controlKey, instanceKey, &controlKeyName, KEY_ALL_ACCESS, REG_OPTION_VOLATILE, NULL ); if (NT_SUCCESS(status)) {
dwordValue = 1; PiWstrToUnicodeString( &valueName, REGSTR_VAL_FIRMWAREMEMBER ); status = ZwSetValueKey( controlKey, &valueName, 0, REG_DWORD, &dwordValue, sizeof(dwordValue) );
dwordValue = DevNodeInfoList[ nodeIndex ].Handle; PiWstrToUnicodeString(&valueName, L"PnpBiosDeviceHandle"); status = ZwSetValueKey( controlKey, &valueName, 0, REG_DWORD, &dwordValue, sizeof(dwordValue) );
dwordValue = DevNodeInfoList[ nodeIndex ].FirmwareDisabled; PiWstrToUnicodeString(&valueName, REGSTR_VAL_FIRMWAREDISABLED); status = ZwSetValueKey( controlKey, &valueName, 0, REG_DWORD, &dwordValue, sizeof(dwordValue) ); ZwClose(controlKey);
} else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S\\%S\\Control, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfoList[ nodeIndex ].ProductId, instanceNameStr, status) );
ZwClose( instanceKey ); status = STATUS_UNSUCCESSFUL;
goto Cleanup; }
PiWstrToUnicodeString(&logConfKeyName, REGSTR_KEY_LOGCONF); status = IopCreateRegistryKeyEx( &logConfKey, instanceKey, &logConfKeyName, KEY_ALL_ACCESS, REG_OPTION_NON_VOLATILE, NULL );
if (NT_SUCCESS(status)) {
if (DevNodeInfoList[nodeIndex].BootConfig != NULL) {
PiWstrToUnicodeString(&valueName, REGSTR_VAL_BOOTCONFIG); status = ZwSetValueKey( logConfKey, &valueName, 0, REG_RESOURCE_LIST, DevNodeInfoList[ nodeIndex ].BootConfig, DevNodeInfoList[ nodeIndex ].BootConfigLength ); }
if (DevNodeInfoList[nodeIndex].BasicConfig != NULL) {
PiWstrToUnicodeString(&valueName, REGSTR_VAL_BASICCONFIGVECTOR); status = ZwSetValueKey( logConfKey, &valueName, 0, REG_RESOURCE_REQUIREMENTS_LIST, DevNodeInfoList[nodeIndex].BasicConfig, DevNodeInfoList[nodeIndex].BasicConfigLength );
}
ZwClose(logConfKey);
} else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S\\%S\\LogConf, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfoList[nodeIndex].ProductId, instanceNameStr, status) );
ZwClose( instanceKey ); status = STATUS_UNSUCCESSFUL;
goto Cleanup; } //
// If we are replacing a FW Mapper devnode we need to copy the
// Device Parameters subkey.
//
if (isNewDevice && DevNodeInfoList[nodeIndex].Replaces != NULL) {
status = PnPBiosCopyDeviceParamKey( enumRootKey, DevNodeInfoList[nodeIndex].Replaces, instanceNameStr ); }
ZwClose(instanceKey);
} else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S\\%S, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfoList[ nodeIndex ].ProductId, instanceNameStr, status) );
ZwClose(instanceKey); status = STATUS_UNSUCCESSFUL;
goto Cleanup; }
//
// Now check if the entry just written duplicates one written by the
// Firmware Mapper. If it does then remove the Firmware Mapper entry.
//
if (DevNodeInfoList[nodeIndex].Replaces != NULL) {
IopDeleteKeyRecursive(enumRootKey, DevNodeInfoList[nodeIndex].Replaces);
} } status = STATUS_SUCCESS;
Cleanup:
ZwClose(enumRootKey);
if (excludeList) {
ExFreePool (excludeList); }
return status;}VOIDPnPBiosCopyIoDecode( IN HANDLE EnumRootKey, IN PBIOS_DEVNODE_INFO DevNodeInfo ){ WCHAR logConfKeyNameStr[DEFAULT_STRING_SIZE]; UNICODE_STRING logConfKeyName; HANDLE logConfKey; UNICODE_STRING valueName; PKEY_VALUE_PARTIAL_INFORMATION valueInfo = NULL; ULONG valueInfoLength; ULONG returnedLength; NTSTATUS status; PCM_PARTIAL_RESOURCE_LIST partialResourceList; PCM_PARTIAL_RESOURCE_DESCRIPTOR partialDescriptor; ULONG index; USHORT flags;
if (DevNodeInfo->Replaces == NULL || DevNodeInfo->BootConfig == NULL) { //
// If we didn't find a FW Mapper created devnode then there is nothing
// to do.
//
return; } //
// Search through the Boot Config and see if the device's I/O ports are
// 16 bit decode.
//
ASSERT(DevNodeInfo->BootConfig->Count == 1);
partialResourceList = &DevNodeInfo->BootConfig->List[0].PartialResourceList; partialDescriptor = &partialResourceList->PartialDescriptors[0];
flags = (USHORT)~0; for ( index = 0; index < partialResourceList->Count; index++ ) {
if (partialDescriptor->Type == CmResourceTypePort) {
if (flags == (USHORT)~0) {
flags = partialDescriptor->Flags & DECODE_FLAGS; } else {
ASSERT(flags == (partialDescriptor->Flags & DECODE_FLAGS)); } } partialDescriptor++; }
if (!(flags & (CM_RESOURCE_PORT_16_BIT_DECODE | CM_RESOURCE_PORT_POSITIVE_DECODE))) {
return; }
StringCbPrintfW( logConfKeyNameStr, sizeof(logConfKeyNameStr), L"%s\\%s", DevNodeInfo->Replaces, REGSTR_KEY_LOGCONF); logConfKeyNameStr[(sizeof(logConfKeyNameStr) / sizeof(logConfKeyNameStr[0])) - 1] = UNICODE_NULL;
RtlInitUnicodeString(&logConfKeyName, logConfKeyNameStr); status = IopCreateRegistryKeyEx( &logConfKey, EnumRootKey, &logConfKeyName, KEY_ALL_ACCESS, REG_OPTION_NON_VOLATILE, NULL); if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not open registry key %S\\%S\\%S, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfo->Replaces, REGSTR_KEY_LOGCONF, status) ); return; }
valueInfoLength = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + DEFAULT_STRING_SIZE; valueInfo = ExAllocatePool(PagedPool, valueInfoLength);
if (valueInfo == NULL) {
ZwClose(logConfKey); return; }
PiWstrToUnicodeString(&valueName, REGSTR_VAL_BOOTCONFIG); status = ZwQueryValueKey( logConfKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength); if (!NT_SUCCESS(status)) {
if (status == STATUS_BUFFER_TOO_SMALL || status == STATUS_BUFFER_OVERFLOW) { //
// The default buffer was too small, free it and reallocate
// it to the required size.
//
ExFreePool(valueInfo);
valueInfoLength = returnedLength; valueInfo = ExAllocatePool(PagedPool, valueInfoLength); if (valueInfo != NULL) {
status = ZwQueryValueKey( logConfKey, &valueName, KeyValuePartialInformation, valueInfo, valueInfoLength, &returnedLength );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not query registry value %S\\%S\\LogConf\\BootConfig, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfo->Replaces, status) );
ExFreePool(valueInfo); ZwClose(logConfKey); return; } } else {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not allocate memory for BootConfig value\n" ) ); ZwClose(logConfKey); return; } } } partialResourceList = &((PCM_RESOURCE_LIST)valueInfo->Data)->List[0].PartialResourceList; partialDescriptor = &partialResourceList->PartialDescriptors[0]; for ( index = 0; index < partialResourceList->Count; index++ ) {
if (partialDescriptor->Type == CmResourceTypePort) {
partialDescriptor->Flags &= ~DECODE_FLAGS; partialDescriptor->Flags |= flags; } partialDescriptor++; } status = ZwSetValueKey( logConfKey, &valueName, 0, REG_RESOURCE_LIST, valueInfo->Data, valueInfo->DataLength );
if (!NT_SUCCESS(status)) {
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Could not set registry value %S\\%S\\LogConf\\BootConfig, status = %8.8X\n", ENUMROOT_KEY_NAME, DevNodeInfo->Replaces, status) ); }
ExFreePool(valueInfo); ZwClose(logConfKey);}
NTSTATUSPnPBiosCheckForHardwareDisabled( IN PIO_RESOURCE_REQUIREMENTS_LIST IoResourceList, IN OUT PBOOLEAN Disabled )/*++
Routine Description:
If this device has been assigned one or more resources, and each resource has a length of zero, then it is hardware disabled.
Arguments:
IoResourceList - Resource obtained from BIOS that we're about to map to a CmResourceList
Disabled - Set to TRUE if the device is deemed to be disabled
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ BOOLEAN parsedResource; PIO_RESOURCE_DESCRIPTOR ioDescriptor; ULONG descIndex; //
// Since this routine is only used to translate the allocated resources
// returned by the PnP BIOS, we can assume that there is only 1 alternative
// list
//
ASSERT(IoResourceList->AlternativeLists == 1); ASSERT(Disabled != NULL);
*Disabled = FALSE; parsedResource = FALSE; //
// Translate each resource descriptor, currently we only handle ports,
// memory, interrupts, and dma. The current implementation of the routine
// which converts from ISA PnP Resource data to IO_RESOURCE_REQUIREMENTS
// won't generate any other descriptor types given the data returned from
// the BIOS.
//
for (descIndex = 0; descIndex < IoResourceList->List[0].Count; descIndex++) {
ioDescriptor = &IoResourceList->List[0].Descriptors[descIndex];
switch (ioDescriptor->Type) {
case CmResourceTypePort:
if (ioDescriptor->u.Port.Length) {
return STATUS_SUCCESS; } parsedResource = TRUE; break;
case CmResourceTypeInterrupt:
if (ioDescriptor->u.Interrupt.MinimumVector != (ULONG)(-1)) {
return STATUS_SUCCESS; } parsedResource = TRUE; break;
case CmResourceTypeMemory:
if (ioDescriptor->u.Memory.Length) {
return STATUS_SUCCESS; } parsedResource = TRUE; break;
case CmResourceTypeDma:
if (ioDescriptor->u.Dma.MinimumChannel != (ULONG)(-1)) {
return STATUS_SUCCESS; } parsedResource = TRUE; break;
default:
IopDbgPrint( (IOP_MAPPER_WARNING_LEVEL, "Unexpected ResourceType (%d) in I/O Descriptor\n", ioDescriptor->Type) ); break; } }
if (parsedResource) { //
// at least one empty resource, no non-empty resources
//
*Disabled = TRUE; }
return STATUS_SUCCESS;
}
NTSTATUSPnPBiosFreeDevNodeInfo( IN PBIOS_DEVNODE_INFO DevNodeInfoList, IN ULONG NumberNodes )/*++
Routine Description:
Free the dynamically allocated DevNodeInfoList as well as any dynamically allocated dependent structures.
Arguments:
DevNodeInfoList - Array of BIOS_DEVNODE_INFO structures, one for each device reported by the BIOS.
NumberNodes - Number of BIOS_DEVNODE_INFO elements pointed to by DevNodeInfoList.
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ ULONG nodeIndex;
for (nodeIndex = 0; nodeIndex < NumberNodes; nodeIndex++) {
if (DevNodeInfoList[nodeIndex].Replaces != NULL) {
ExFreePool(DevNodeInfoList[nodeIndex].Replaces); }
if (DevNodeInfoList[nodeIndex].CompatibleIDs != NULL) {
ExFreePool(DevNodeInfoList[nodeIndex].CompatibleIDs); }
if (DevNodeInfoList[nodeIndex].BootConfig != NULL) {
ExFreePool(DevNodeInfoList[nodeIndex].BootConfig); }
if (DevNodeInfoList[nodeIndex].BasicConfig != NULL) {
ExFreePool(DevNodeInfoList[nodeIndex].BasicConfig); } }
ExFreePool(DevNodeInfoList);
return STATUS_SUCCESS;}
NTSTATUSPnPBiosMapper()/*++
Routine Description:
Map the information provided from the PnP BIOS and stored in the registry by NTDETECT into root enumerated devices.
Arguments:
NONE
Return Value:
STATUS_SUCCESS if no errors, otherwise the appropriate error.
--*/{ PCM_RESOURCE_LIST biosInfo; ULONG length; NTSTATUS status; PBIOS_DEVNODE_INFO devNodeInfoList; ULONG numberNodes;
ASSERT(!PpDisableFirmwareMapper); if (PpDisableFirmwareMapper) {
return STATUS_UNSUCCESSFUL; }
status = PnPBiosGetBiosInfo(&biosInfo, &length); if (!NT_SUCCESS(status)) {
return status; }
status = PnPBiosTranslateInfo( biosInfo, length, &devNodeInfoList, &numberNodes); ExFreePool( biosInfo ); if (!NT_SUCCESS(status)) {
return status; }
status = PnPBiosEliminateDupes(devNodeInfoList, numberNodes); if (NT_SUCCESS(status)) {
status = PnPBiosWriteInfo(devNodeInfoList, numberNodes); }
PnPBiosFreeDevNodeInfo(devNodeInfoList, numberNodes);
return status;}
VOIDPpFilterNtResource ( IN PWCHAR PnpDeviceName, PIO_RESOURCE_REQUIREMENTS_LIST ResReqList){ PIO_RESOURCE_LIST ioResourceList; PIO_RESOURCE_DESCRIPTOR ioResourceDescriptors; ULONG i, j;
if (ResReqList == NULL) {
return; }
if (RtlCompareMemory(PnpDeviceName, L"*PNP06", sizeof(L"*PNP06") - sizeof(WCHAR)) == sizeof(L"*PNP06") - sizeof(WCHAR)) {
ioResourceList = ResReqList->List; for (j = 0; j < ResReqList->AlternativeLists; j++) {
ioResourceDescriptors = ioResourceList->Descriptors;
for (i = 0; i < ioResourceList->Count; i++) {
if (ioResourceDescriptors[i].Type == CmResourceTypePort) { //
// some bios asks for 1 too many io port for ide channel
//
if ((ioResourceDescriptors[i].u.Port.Length == 2) && (ioResourceDescriptors[i].u.Port.MaximumAddress.QuadPart == (ioResourceDescriptors[i].u.Port.MinimumAddress.QuadPart + 1))) {
ioResourceDescriptors[i].u.Port.Length = 1; ioResourceDescriptors[i].u.Port.MaximumAddress = ioResourceDescriptors[i].u.Port.MinimumAddress; } } } ioResourceList = (PIO_RESOURCE_LIST) (ioResourceDescriptors + ioResourceList->Count); } }}
#ifdef ALLOC_DATA_PRAGMA
#pragma const_seg()
#endif
#endif
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