/*++
Copyright (c) 1997-2000 Microsoft Corporation
Module Name:
registry.c
Abstract:
This module contains the code that manipulates the ARC firmware
tree and other elements in the registry.
Author:
Bob Rinne
Ravisankar Pudipeddi (ravisp) 1 Dec 1996
Neil Sandlin (neilsa) June 1 1999
Environment:
Kernel mode
Revision History :
--*/
#include "pch.h"
//
// Internal References
//
VOID
PcmciaGetRegistryContextRange(
IN HANDLE instanceHandle,
IN PCWSTR Name,
IN OPTIONAL const PCMCIA_CONTEXT_RANGE IncludeRange[],
IN OPTIONAL const PCMCIA_CONTEXT_RANGE ExcludeRange[],
OUT PPCMCIA_CONTEXT pContext
);
ULONG
PcmciaGetDetectedFdoIrqMask(
IN PFDO_EXTENSION FdoExtension
);
NTSTATUS
PcmciaScanHardwareDescription(
VOID
);
NTSTATUS
PcmciaGetHardwareDetectedIrqMask(
IN HANDLE handlePcCard
);
//
//
// Registry related definitions
//
#define PCMCIA_REGISTRY_PARAMETERS_KEY L"Pcmcia\\Parameters"
#define PCMCIA_REGISTRY_DETECTED_DEVICE_KEY L"ControllerProperties"
//
// Per controller values (in control\class)
//
#define PCMCIA_REGISTRY_PCI_CONTEXT_VALUE L"CBSSCSContextRanges"
#define PCMCIA_REGISTRY_CB_CONTEXT_VALUE L"CBSSCBContextRanges"
#define PCMCIA_REGISTRY_EXCA_CONTEXT_VALUE L"CBSSEXCAContextRanges"
#define PCMCIA_REGISTRY_CACHED_IRQMASK L"CachedIrqMask"
#define PCMCIA_REGISTRY_COMPATIBLE_TYPE L"CompatibleControllerType"
#define PCMCIA_REGISTRY_VOLTAGE_PREFERENCE L"VoltagePreference"
//
// Irq detection values (in hardware\description)
//
#define PCMCIA_REGISTRY_CONTROLLER_TYPE L"OtherController"
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT,PcmciaLoadGlobalRegistryValues)
#pragma alloc_text(INIT,PcmciaScanHardwareDescription)
#pragma alloc_text(INIT,PcmciaGetHardwareDetectedIrqMask)
#pragma alloc_text(PAGE,PcmciaGetControllerRegistrySettings)
#pragma alloc_text(PAGE,PcmciaGetRegistryFdoIrqMask)
#pragma alloc_text(PAGE,PcmciaGetDetectedFdoIrqMask)
#pragma alloc_text(PAGE,PcmciaGetLegacyDetectedControllerType)
#pragma alloc_text(PAGE,PcmciaSetLegacyDetectedControllerType)
#pragma alloc_text(PAGE,PcmciaGetRegistryContextRange)
#endif
NTSTATUS
PcmciaGetHardwareDetectedIrqMask(
HANDLE handlePcCard
)
/*++
Routine Description:
This routine looks through the OtherController key for pccard entries
created by NTDETECT. For each entry, the IRQ scan data is read in and
saved for later.
Arguments:
handlePcCard - open handle to "OtherController" key in registry at
HARDWARE\Description\System\MultifunctionAdapter\<ISA>
Return value:
status
--*/
{
#define VALUE2_BUFFER_SIZE sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(CM_PCCARD_DEVICE_DATA) + sizeof(CM_FULL_RESOURCE_DESCRIPTOR)
UCHAR valueBuffer[VALUE2_BUFFER_SIZE];
PKEY_VALUE_PARTIAL_INFORMATION valueInfo = (PKEY_VALUE_PARTIAL_INFORMATION) valueBuffer;
NTSTATUS status;
KEY_FULL_INFORMATION KeyFullInfo;
PKEY_BASIC_INFORMATION subKeyInfo = NULL;
OBJECT_ATTRIBUTES attributes;
UNICODE_STRING strSubKey = {0};
UNICODE_STRING strIdentifier;
UNICODE_STRING strConfigData;
HANDLE handleSubKey = NULL;
ULONG subKeyInfoSize;
ULONG index;
ULONG resultLength;
RtlInitUnicodeString(&strIdentifier, L"Identifier");
RtlInitUnicodeString(&strConfigData, L"Configuration Data");
status = ZwQueryKey(handlePcCard,
KeyFullInformation,
&KeyFullInfo,
sizeof(KeyFullInfo),
&resultLength);
if ((!NT_SUCCESS(status) && (status != STATUS_BUFFER_OVERFLOW))) {
goto cleanup;
}
strSubKey.MaximumLength = (USHORT) KeyFullInfo.MaxNameLen;
subKeyInfoSize = sizeof(KEY_BASIC_INFORMATION) + KeyFullInfo.MaxNameLen;
subKeyInfo = ExAllocatePool(PagedPool, subKeyInfoSize);
if (!subKeyInfo) {
goto cleanup;
}
for (index=0;;index++) {
//
// Loop through the children of the PcCardController key
//
status = ZwEnumerateKey(handlePcCard,
index,
KeyBasicInformation,
subKeyInfo,
subKeyInfoSize,
&resultLength);
if (!NT_SUCCESS(status)) {
goto cleanup;
}
//
// Init the name
//
if (subKeyInfo->NameLength > strSubKey.MaximumLength) {
continue;
}
strSubKey.Length = (USHORT) subKeyInfo->NameLength;
strSubKey.Buffer = subKeyInfo->Name;
//
// Get a handle to a child of PcCardController
//
InitializeObjectAttributes(&attributes,
&strSubKey,
0, //Attributes
handlePcCard,
NULL //SecurityDescriptor
);
if (handleSubKey) {
// close handle from previous iteration
ZwClose(handleSubKey);
handleSubKey = NULL;
}
status = ZwOpenKey(&handleSubKey, MAXIMUM_ALLOWED, &attributes);
if (!NT_SUCCESS(status)) {
goto cleanup;
}
//
// Get the value of "Identifier"
//
status = ZwQueryValueKey(handleSubKey,
&strIdentifier,
KeyValuePartialInformation,
valueInfo,
VALUE2_BUFFER_SIZE,
&resultLength);
if (NT_SUCCESS(status) || (status == STATUS_BUFFER_OVERFLOW)) {
PWCHAR pData = (PWCHAR)valueInfo->Data;
if ((valueInfo->DataLength == 17*sizeof(WCHAR)) &&
(pData[0] == (WCHAR)'P') &&
(pData[1] == (WCHAR)'c') &&
(pData[2] == (WCHAR)'C') &&
(pData[3] == (WCHAR)'a') &&
(pData[4] == (WCHAR)'r') &&
(pData[5] == (WCHAR)'d')) {
//
// Get the IRQ detection data
//
status = ZwQueryValueKey(handleSubKey,
&strConfigData,
KeyValuePartialInformation,
valueInfo,
VALUE2_BUFFER_SIZE,
&resultLength);
if (NT_SUCCESS(status)) {
PCM_FULL_RESOURCE_DESCRIPTOR pFullDesc = (PCM_FULL_RESOURCE_DESCRIPTOR) valueInfo->Data;
PCM_PARTIAL_RESOURCE_DESCRIPTOR pPartialDesc = (PCM_PARTIAL_RESOURCE_DESCRIPTOR) pFullDesc->PartialResourceList.PartialDescriptors;
if ((pPartialDesc->Type == CmResourceTypeDeviceSpecific) &&
(pPartialDesc->u.DeviceSpecificData.DataSize == sizeof(CM_PCCARD_DEVICE_DATA))) {
PCM_PCCARD_DEVICE_DATA pData = (PCM_PCCARD_DEVICE_DATA) ((ULONG_PTR)&pPartialDesc->u.DeviceSpecificData + 3*sizeof(ULONG));
PPCMCIA_NTDETECT_DATA pNewData;
pNewData = ExAllocatePool(PagedPool, sizeof(PCMCIA_NTDETECT_DATA));
if (pNewData == NULL) {
goto cleanup;
}
pNewData->PcCardData = *pData;
pNewData->Next = pNtDetectDataList;
pNtDetectDataList = pNewData;
}
}
}
}
}
cleanup:
if (handleSubKey) {
ZwClose(handleSubKey);
}
if (subKeyInfo) {
ExFreePool(subKeyInfo);
}
return STATUS_SUCCESS;
}
ULONG
PcmciaGetDetectedFdoIrqMask(
IN PFDO_EXTENSION FdoExtension
)
/*++
Routine Description:
This routine looks through the cached PCMCIA_NTDETECT_DATA entries
to see if there was an entry for this controller. It then returns the
detected irq mask for that controller.
Arguments:
FdoExtension - The fdo extension corresponding to the PCMCIA controller
Return value:
status
--*/
{
PPCMCIA_NTDETECT_DATA pData;
PCM_PCCARD_DEVICE_DATA pPcCardData;
ULONG detectedIrqMask = 0;
if (FdoExtension->SocketList == NULL) {
return 0;
}
for (pData = pNtDetectDataList; pData != NULL; pData = pData->Next) {
pPcCardData = &pData->PcCardData;
if (CardBusExtension(FdoExtension)) {
if (!(pPcCardData->Flags & PCCARD_DEVICE_PCI) || ((pPcCardData->BusData) == 0) ||
((pPcCardData->BusData & 0xff) != FdoExtension->PciBusNumber) ||
(((pPcCardData->BusData >> 8) & 0xff) != FdoExtension->PciDeviceNumber)) {
continue;
}
SetFdoFlag(FdoExtension, PCMCIA_FDO_IRQ_DETECT_DEVICE_FOUND);
if (!(pPcCardData->Flags & PCCARD_MAP_ERROR)) {
//
// we found the device, and the map looks good
//
break;
}
} else {
if ((pPcCardData->Flags & PCCARD_DEVICE_PCI) ||
(pPcCardData->LegacyBaseAddress != (ULONG_PTR)FdoExtension->SocketList->AddressPort)) {
continue;
}
SetFdoFlag(FdoExtension, PCMCIA_FDO_IRQ_DETECT_DEVICE_FOUND);
if (!(pPcCardData->Flags & PCCARD_MAP_ERROR)) {
//
// we found the device, and the map looks good
//
break;
}
}
}
if (pData) {
ULONG i;
//
// Found the entry
//
// Since we don't currently handle "rewired" irqs, we can compact
// it down to a bit mask, throwing away irqs that are wired, say
// IRQ12 on the controller to IRQ15 on the isa bus.
//
for (i = 1; i < 16; i++) {
if (pPcCardData->IRQMap[i] == i) {
detectedIrqMask |= (1<<i);
}
}
SetFdoFlag(FdoExtension, PCMCIA_FDO_IRQ_DETECT_COMPLETED);
}
return detectedIrqMask;
}
NTSTATUS
PcmciaScanHardwareDescription(
VOID
)
/*++
Routine Description:
This routine finds the "OtherController" entry in
HARDWARE\Description\System\MultifunctionAdapter\<ISA>. This is
where NTDETECT stores irq scan results.
It also looks for machines that aren't supported, for example MCA
bus.
Arguments:
Return value:
status
--*/
{
#define VALUE_BUFFER_SIZE sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 3*sizeof(WCHAR)
UCHAR valueBuffer[VALUE_BUFFER_SIZE];
PKEY_VALUE_PARTIAL_INFORMATION valueInfo = (PKEY_VALUE_PARTIAL_INFORMATION) valueBuffer;
PKEY_BASIC_INFORMATION subKeyInfo = NULL;
KEY_FULL_INFORMATION KeyFullInfo;
HANDLE handleRoot = NULL;
HANDLE handleSubKey = NULL;
HANDLE handlePcCard = NULL;
UNICODE_STRING strRoot, strIdentifier;
UNICODE_STRING strSubKey = {0};
UNICODE_STRING strPcCard = {0};
NTSTATUS status;
OBJECT_ATTRIBUTES attributes;
ULONG subKeyInfoSize;
ULONG resultLength;
ULONG index;
PAGED_CODE();
//
// Get a handle to the MultifunctionAdapter key
//
RtlInitUnicodeString(&strRoot, L"\\Registry\\MACHINE\\HARDWARE\\DESCRIPTION\\System\\MultiFunctionAdapter");
RtlInitUnicodeString(&strIdentifier, L"Identifier");
RtlInitUnicodeString(&strPcCard, PCMCIA_REGISTRY_CONTROLLER_TYPE);
InitializeObjectAttributes(&attributes,
&strRoot,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
status = ZwOpenKey(&handleRoot, MAXIMUM_ALLOWED, &attributes);
if (!NT_SUCCESS(status)) {
goto cleanup;
}
status = ZwQueryKey(handleRoot,
KeyFullInformation,
&KeyFullInfo,
sizeof(KeyFullInfo),
&resultLength);
if ((!NT_SUCCESS(status) && (status != STATUS_BUFFER_OVERFLOW))) {
goto cleanup;
}
strSubKey.MaximumLength = (USHORT) KeyFullInfo.MaxNameLen;
subKeyInfoSize = sizeof(KEY_BASIC_INFORMATION) + KeyFullInfo.MaxNameLen;
subKeyInfo = ExAllocatePool(PagedPool, subKeyInfoSize);
if (!subKeyInfo) {
goto cleanup;
}
for (index=0;;index++) {
//
// Loop through the children of "MultifunctionAdapter"
//
status = ZwEnumerateKey(handleRoot,
index,
KeyBasicInformation,
subKeyInfo,
subKeyInfoSize,
&resultLength);
if (!NT_SUCCESS(status)) {
goto cleanup;
}
//
// Init the name
//
if (subKeyInfo->NameLength > strSubKey.MaximumLength) {
continue;
}
strSubKey.Length = (USHORT) subKeyInfo->NameLength;
strSubKey.Buffer = subKeyInfo->Name;
//
// Get a handle to a child of MultifunctionAdapter
//
InitializeObjectAttributes(&attributes,
&strSubKey,
0, //Attributes
handleRoot,
NULL //SecurityDescriptor
);
if (handleSubKey) {
// close handle from previous iteration
ZwClose(handleSubKey);
handleSubKey = NULL;
}
status = ZwOpenKey(&handleSubKey, MAXIMUM_ALLOWED, &attributes);
if (!NT_SUCCESS(status)) {
goto cleanup;
}
//
// Get the value of "Identifier"
//
status = ZwQueryValueKey(handleSubKey,
&strIdentifier,
KeyValuePartialInformation,
valueInfo,
VALUE_BUFFER_SIZE,
&resultLength);
if (NT_SUCCESS(status)) {
PWCHAR pData = (PWCHAR)valueInfo->Data;
if ((valueInfo->DataLength == 4*sizeof(WCHAR)) &&
(pData[0] == (WCHAR)'M') &&
(pData[1] == (WCHAR)'C') &&
(pData[2] == (WCHAR)'A') &&
(pData[3] == UNICODE_NULL)) {
status = STATUS_NO_SUCH_DEVICE;
goto cleanup;
}
if ((valueInfo->DataLength == 4*sizeof(WCHAR)) &&
(pData[0] == (WCHAR)'I') &&
(pData[1] == (WCHAR)'S') &&
(pData[2] == (WCHAR)'A') &&
(pData[3] == UNICODE_NULL)) {
InitializeObjectAttributes(&attributes,
&strPcCard,
0, //Attributes
handleSubKey,
NULL //SecurityDescriptor
);
status = ZwOpenKey(&handlePcCard, MAXIMUM_ALLOWED, &attributes);
if (NT_SUCCESS(status)) {
status = PcmciaGetHardwareDetectedIrqMask(handlePcCard);
ZwClose(handlePcCard);
}
}
}
}
cleanup:
if (handleRoot) {
ZwClose(handleRoot);
}
if (handleSubKey) {
ZwClose(handleSubKey);
}
if (subKeyInfo) {
ExFreePool(subKeyInfo);
}
if (status == STATUS_NO_SUCH_DEVICE) {
//
// Must be an MCA machine
//
return status;
}
return STATUS_SUCCESS;
}
NTSTATUS
PcmciaLoadGlobalRegistryValues(
VOID
)
/*++
Routine Description:
This routine is called at driver init time to load in various global
options from the registry.
These are read in from SYSTEM\CurrentControlSet\Services\Pcmcia\Parameters.
Arguments:
none
Return value:
none
--*/
{
PRTL_QUERY_REGISTRY_TABLE parms;
NTSTATUS status;
ULONG parmsSize;
ULONG i;
status = PcmciaScanHardwareDescription();
if (!NT_SUCCESS(status)) {
return status;
}
//
// Needs a null entry to terminate the list
//
parmsSize = sizeof(RTL_QUERY_REGISTRY_TABLE) * (GlobalInfoCount+1);
parms = ExAllocatePool(PagedPool, parmsSize);
if (!parms) {
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory(parms, parmsSize);
//
// Fill in the query table from our table
//
for (i = 0; i < GlobalInfoCount; i++) {
parms[i].Flags = RTL_QUERY_REGISTRY_DIRECT;
parms[i].Name = GlobalRegistryInfo[i].Name;
parms[i].EntryContext = GlobalRegistryInfo[i].pValue;
parms[i].DefaultType = REG_DWORD;
parms[i].DefaultData = &GlobalRegistryInfo[i].Default;
parms[i].DefaultLength = sizeof(ULONG);
}
//
// Perform the query
//
status = RtlQueryRegistryValues(RTL_REGISTRY_SERVICES | RTL_REGISTRY_OPTIONAL,
PCMCIA_REGISTRY_PARAMETERS_KEY,
parms,
NULL,
NULL);
if (!NT_SUCCESS(status)) {
//
// This is possible during text mode setup
//
for (i = 0; i < GlobalInfoCount; i++) {
*GlobalRegistryInfo[i].pValue = GlobalRegistryInfo[i].Default;
}
}
if (initSoundsEnabled) {
PcmciaGlobalFlags |= PCMCIA_GLOBAL_SOUNDS_ENABLED;
}
if (initUsePolledCsc) {
PcmciaGlobalFlags |= PCMCIA_GLOBAL_FORCE_POLL_MODE;
}
if (initDisableAcpiNameSpaceCheck) {
PcmciaGlobalFlags |= PCMCIA_DISABLE_ACPI_NAMESPACE_CHECK;
}
if (initDefaultRouteR2ToIsa) {
PcmciaGlobalFlags |= PCMCIA_DEFAULT_ROUTE_R2_TO_ISA;
}
if (!pcmciaIsaIrqRescanComplete) {
UNICODE_STRING unicodeKey, unicodeValue;
OBJECT_ATTRIBUTES objectAttributes;
HANDLE handle;
ULONG value;
//
// This mechanism is used to throw away the cached ISA irq map values. To do this
// only once, we make sure a value in the registry is zero (or non-existant), and
// here we set it to one.
//
RtlInitUnicodeString(&unicodeKey,
L"\\Registry\\MACHINE\\SYSTEM\\CurrentControlSet\\Services\\Pcmcia\\Parameters");
RtlZeroMemory(&objectAttributes, sizeof(OBJECT_ATTRIBUTES));
InitializeObjectAttributes(&objectAttributes,
&unicodeKey,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
if (NT_SUCCESS(ZwOpenKey(&handle, KEY_READ | KEY_WRITE, &objectAttributes))) {
RtlInitUnicodeString(&unicodeValue, PCMCIA_REGISTRY_ISA_IRQ_RESCAN_COMPLETE);
value = 1;
ZwSetValueKey(handle,
&unicodeValue,
0,
REG_DWORD,
&value,
sizeof(value));
ZwClose(handle);
}
}
ExFreePool(parms);
return STATUS_SUCCESS;
}
NTSTATUS
PcmciaGetControllerRegistrySettings(
IN OUT PFDO_EXTENSION FdoExtension
)
/*++
Routine Description:
This routine looks in the registry to see if a compatible controller type
was specified in the INF.
Arguments:
FdoExtension - The fdo extension corresponding to the PCMCIA controller
Return value:
--*/
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
UNICODE_STRING KeyName;
HANDLE instanceHandle;
UCHAR buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(ULONG)];
PKEY_VALUE_PARTIAL_INFORMATION value = (PKEY_VALUE_PARTIAL_INFORMATION) buffer;
ULONG length;
BOOLEAN UseLegacyIrqMask = TRUE;
ULONG detectedIrqMask;
if (FdoExtension->Pdo) {
status = IoOpenDeviceRegistryKey(FdoExtension->Pdo,
PLUGPLAY_REGKEY_DRIVER,
KEY_READ,
&instanceHandle
);
}
if (!NT_SUCCESS(status)) {
instanceHandle = NULL;
}
if (instanceHandle) {
//
// Look to see if a controller ID was specified
//
RtlInitUnicodeString(&KeyName, PCMCIA_REGISTRY_COMPATIBLE_TYPE);
status = ZwQueryValueKey(instanceHandle,
&KeyName,
KeyValuePartialInformation,
value,
sizeof(buffer),
&length);
if (NT_SUCCESS(status)) {
PcmciaSetControllerType(FdoExtension, *(PPCMCIA_CONTROLLER_TYPE)(value->Data));
}
//
// Check for voltage preference
// When an 3v R2 card is plugged in, and the controller
// sets both 5v and 3.3v, this allows 3.3v to be preferred.
//
RtlInitUnicodeString(&KeyName, PCMCIA_REGISTRY_VOLTAGE_PREFERENCE);
status = ZwQueryValueKey(instanceHandle,
&KeyName,
KeyValuePartialInformation,
value,
sizeof(buffer),
&length);
if (NT_SUCCESS(status) && (*(PULONG)(value->Data) == 33)) {
SetDeviceFlag(FdoExtension, PCMCIA_FDO_PREFER_3V);
}
}
//
// Retrieve context ranges
//
PcmciaGetRegistryContextRange(instanceHandle,
PCMCIA_REGISTRY_PCI_CONTEXT_VALUE,
DefaultPciContextSave,
NULL,
&FdoExtension->PciContext
);
PcmciaGetRegistryContextRange(instanceHandle,
PCMCIA_REGISTRY_CB_CONTEXT_VALUE,
DefaultCardbusContextSave,
ExcludeCardbusContextRange,
&FdoExtension->CardbusContext
);
PcmciaGetRegistryContextRange(instanceHandle,
PCMCIA_REGISTRY_EXCA_CONTEXT_VALUE,
NULL,
NULL,
&FdoExtension->ExcaContext);
if (instanceHandle) {
ZwClose(instanceHandle);
}
FdoExtension->IoLow = globalIoLow;
FdoExtension->IoHigh = globalIoHigh;
FdoExtension->ReadyDelayIter = globalReadyDelayIter;
FdoExtension->ReadyStall = globalReadyStall;
FdoExtension->AttributeMemoryLow = globalAttributeMemoryLow;
FdoExtension->AttributeMemoryHigh = globalAttributeMemoryHigh;
if (FdoExtension->ControllerType == PcmciaDatabook) {
FdoExtension->AttributeMemoryAlignment = TCIC_WINDOW_ALIGNMENT;
} else {
FdoExtension->AttributeMemoryAlignment = PCIC_WINDOW_ALIGNMENT;
}
//
// Assign default attribute memory window size
//
if (globalAttributeMemorySize == 0) {
switch (FdoExtension->ControllerType) {
case PcmciaDatabook:
FdoExtension->AttributeMemorySize = TCIC_WINDOW_SIZE;
break;
default:
FdoExtension->AttributeMemorySize = PCIC_WINDOW_SIZE;
break;
}
} else {
FdoExtension->AttributeMemorySize = globalAttributeMemorySize;
}
//
// See if the user asked for some special IRQ routing considerations based
// on controller type
//
if (CardBusExtension(FdoExtension)) {
//
// route to PCI based on controller type
//
if (pcmciaIrqRouteToPciController) {
ULONG ctlr = pcmciaIrqRouteToPciController;
//
// Check for exact match, or class if only a class was specified
//
if ((ctlr == FdoExtension->ControllerType) ||
((PcmciaClassFromControllerType(ctlr) == ctlr) && (ctlr == PcmciaClassFromControllerType(FdoExtension->ControllerType)))) {
SetFdoFlag(FdoExtension, PCMCIA_FDO_PREFER_PCI_ROUTING);
}
}
//
// route to ISA based on controller type
//
if (pcmciaIrqRouteToIsaController) {
ULONG ctlr = pcmciaIrqRouteToIsaController;
//
// Check for exact match, or class if only a class was specified
//
if ((ctlr == FdoExtension->ControllerType) ||
((PcmciaClassFromControllerType(ctlr) == ctlr) && (ctlr == PcmciaClassFromControllerType(FdoExtension->ControllerType)))) {
SetFdoFlag(FdoExtension, PCMCIA_FDO_PREFER_ISA_ROUTING);
}
}
//
// route to PCI based on controller location
//
if (pcmciaIrqRouteToPciLocation) {
ULONG loc = pcmciaIrqRouteToPciLocation;
if ( ((loc & 0xff) == FdoExtension->PciBusNumber) &&
(((loc >> 8) & 0xff) == FdoExtension->PciDeviceNumber)) {
SetFdoFlag(FdoExtension, PCMCIA_FDO_FORCE_PCI_ROUTING);
}
}
//
// route to ISA based on controller location
//
if (pcmciaIrqRouteToIsaLocation) {
ULONG loc = pcmciaIrqRouteToIsaLocation;
if ( ((loc & 0xff) == FdoExtension->PciBusNumber) &&
(((loc >> 8) & 0xff) == FdoExtension->PciDeviceNumber)) {
SetFdoFlag(FdoExtension, PCMCIA_FDO_FORCE_ISA_ROUTING);
}
}
}
return status;
}
VOID
PcmciaGetRegistryFdoIrqMask(
IN OUT PFDO_EXTENSION FdoExtension
)
/*++
Routine Description:
This routine fills in the field "AllocatedIrqMask" in the specified
fdo extension.
Arguments:
instanceHandle - open registry key for this controller
pIrqMask - pointer to variable to receive irq mask
Return value:
none
--*/
{
ULONG irqMask, cachedIrqMask = 0;
UNICODE_STRING KeyName;
NTSTATUS status;
UCHAR buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) + sizeof(ULONG)];
PKEY_VALUE_PARTIAL_INFORMATION value = (PKEY_VALUE_PARTIAL_INFORMATION) buffer;
ULONG length;
HANDLE instanceHandle;
ULONG detectedIrqMask;
PAGED_CODE();
if (globalOverrideIrqMask) {
irqMask = globalOverrideIrqMask;
} else {
detectedIrqMask = PcmciaGetDetectedFdoIrqMask(FdoExtension);
status = STATUS_UNSUCCESSFUL;
if (FdoExtension->Pdo) {
status = IoOpenDeviceRegistryKey(FdoExtension->Pdo,
PLUGPLAY_REGKEY_DRIVER,
KEY_READ,
&instanceHandle
);
}
if (NT_SUCCESS(status)) {
//
// Here we cache the value, and accumulate bits so that
// our mask improves with time.
//
RtlInitUnicodeString(&KeyName, PCMCIA_REGISTRY_CACHED_IRQMASK);
if (pcmciaIsaIrqRescanComplete) {
status = ZwQueryValueKey(instanceHandle,
&KeyName,
KeyValuePartialInformation,
value,
sizeof(buffer),
&length);
if (NT_SUCCESS(status)) {
cachedIrqMask = *(PULONG)(value->Data);
}
}
irqMask = detectedIrqMask | cachedIrqMask;
if ((cachedIrqMask != irqMask) || !pcmciaIsaIrqRescanComplete) {
//
// something changed, update the cached value
//
ZwSetValueKey(instanceHandle, &KeyName, 0, REG_DWORD, &irqMask, sizeof(irqMask));
}
ZwClose(instanceHandle);
} else {
//
// Hmmm, no key. Can't cache the value
//
irqMask = detectedIrqMask;
}
if (pcmciaDisableIsaPciRouting && (PcmciaCountOnes(irqMask) < 2)) {
//
// Perhaps irq detection is broken... fall back on old NT4 behavior
//
irqMask = 0;
}
}
irqMask &= ~globalFilterIrqMask;
DebugPrint((PCMCIA_DEBUG_INFO, "IrqMask %08x (ovr %08x, flt %08x, det %08x, cache %08x)\n",
irqMask, globalOverrideIrqMask, globalFilterIrqMask, detectedIrqMask, cachedIrqMask));
FdoExtension->DetectedIrqMask = (USHORT)irqMask;
}
VOID
PcmciaGetRegistryContextRange(
IN HANDLE instanceHandle,
IN PCWSTR Name,
IN OPTIONAL const PCMCIA_CONTEXT_RANGE IncludeRange[],
IN OPTIONAL const PCMCIA_CONTEXT_RANGE ExcludeRange[],
OUT PPCMCIA_CONTEXT pContext
)
/*++
Routine Description:
This routine returns a buffer containing the contents of the
data which set by the controller's inf definition (AddReg). The value
is in CurrentControlSet\Control\Class\{GUID}\{Instance}.
Arguments:
FdoExtension - The fdo extension corresponding to the PCMCIA controller
Name - The name of the value in the registry
IncludeRange - defines areas in the range that must be included
ExcludeRange - defines areas in the range that must be excluded
Return value:
Status
--*/
{
#define PCMCIA_MAX_CONTEXT_ENTRIES 128
#define MAX_RANGE_OFFSET 256
NTSTATUS status;
UNICODE_STRING unicodeKeyName;
UCHAR buffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
PCMCIA_MAX_CONTEXT_ENTRIES*sizeof(PCMCIA_CONTEXT_RANGE)];
PKEY_VALUE_PARTIAL_INFORMATION value = (PKEY_VALUE_PARTIAL_INFORMATION) buffer;
UCHAR rangeMap[MAX_RANGE_OFFSET] = {0};
PPCMCIA_CONTEXT_RANGE newRange;
LONG rangeCount;
ULONG rangeLength;
ULONG bufferLength;
UCHAR lastEntry;
ULONG keyLength;
USHORT i, j;
USHORT startOffset, endOffset;
PAGED_CODE();
//
// Initialize the range map with the minimum range
//
if (IncludeRange) {
for (i = 0; IncludeRange[i].wLen != 0; i++) {
startOffset = IncludeRange[i].wOffset;
endOffset = IncludeRange[i].wOffset + IncludeRange[i].wLen - 1;
if ((startOffset >= MAX_RANGE_OFFSET) ||
(endOffset >= MAX_RANGE_OFFSET)) {
continue;
}
for (j = startOffset; j <= endOffset; j++) {
rangeMap[j] = 0xff;
}
}
}
if (instanceHandle) {
RtlInitUnicodeString(&unicodeKeyName, Name);
status = ZwQueryValueKey(instanceHandle,
&unicodeKeyName,
KeyValuePartialInformation,
value,
sizeof(buffer),
&keyLength);
if (NT_SUCCESS(status)) {
//
// Merge in the range specified in the registry
//
newRange = (PPCMCIA_CONTEXT_RANGE) value->Data;
for (i = 0; i < value->DataLength/sizeof(PCMCIA_CONTEXT_RANGE); i++) {
startOffset = newRange[i].wOffset;
endOffset = newRange[i].wOffset + newRange[i].wLen - 1;
if ((startOffset >= MAX_RANGE_OFFSET) ||
(endOffset >= MAX_RANGE_OFFSET)) {
continue;
}
for (j = startOffset; j <= endOffset; j++) {
rangeMap[j] = 0xff;
}
}
}
}
//
// Filter out registers defined in the exclude range
//
if (ExcludeRange) {
for (i = 0; ExcludeRange[i].wLen != 0; i++) {
startOffset = ExcludeRange[i].wOffset;
endOffset = ExcludeRange[i].wOffset + ExcludeRange[i].wLen - 1;
if ((startOffset >= MAX_RANGE_OFFSET) ||
(endOffset >= MAX_RANGE_OFFSET)) {
continue;
}
for (j = startOffset; j <= endOffset; j++) {
rangeMap[j] = 0;
}
}
}
//
// Now build the resulting merged range in the buffer on the
// stack, and figure out how big it is.
//
newRange = (PPCMCIA_CONTEXT_RANGE) buffer;
rangeCount = -1;
bufferLength = 0;
lastEntry = 0;
for (i = 0; i < MAX_RANGE_OFFSET; i++) {
if (rangeMap[i]) {
bufferLength++;
if (lastEntry) {
//
// This new byte belongs to the current range
//
newRange[rangeCount].wLen++;
} else {
//
// Starting a new range
//
if (rangeCount == (PCMCIA_MAX_CONTEXT_ENTRIES - 1)) {
break;
}
rangeCount++;
newRange[rangeCount].wOffset = i;
newRange[rangeCount].wLen = 1;
}
}
lastEntry = rangeMap[i];
}
rangeCount++;
pContext->Range = NULL;
pContext->RangeCount = 0;
if (rangeCount) {
//
// Length of data
//
rangeLength = rangeCount*sizeof(PCMCIA_CONTEXT_RANGE);
pContext->Range = ExAllocatePool(NonPagedPool, rangeLength);
if (pContext->Range != NULL) {
RtlCopyMemory(pContext->Range, buffer, rangeLength);
pContext->RangeCount = (ULONG)rangeCount;
pContext->BufferLength = bufferLength;
//
// Find the length of the longest individual range
//
pContext->MaxLen = 0;
for (i = 0; i < rangeCount; i++) {
if (pContext->Range[i].wLen > pContext->MaxLen) {
pContext->MaxLen = pContext->Range[i].wLen;
}
}
} else {
ASSERT(pContext->Range != NULL);
}
}
}
NTSTATUS
PcmciaGetLegacyDetectedControllerType(
IN PDEVICE_OBJECT Pdo,
IN OUT PPCMCIA_CONTROLLER_TYPE ControllerType
)
/*++
Routine Description:
This routine returns the previously remembered controller type
for the supplied pcmcia controller by poking in the registry
at the appropriate places
Arguments:
Pdo - The Physical device object corresponding to the PCMCIA controller
ControllerType - pointer to the object in which the controller type will
be returned
Return value:
Status
--*/
{
NTSTATUS status;
OBJECT_ATTRIBUTES objectAttributes;
UNICODE_STRING unicodeKeyName;
HANDLE instanceHandle=NULL;
HANDLE parametersHandle = NULL;
RTL_QUERY_REGISTRY_TABLE queryTable[3];
ULONG controllerType;
ULONG invalid = 0xffffffff;
PAGED_CODE();
try {
status = IoOpenDeviceRegistryKey(Pdo,
PLUGPLAY_REGKEY_DEVICE,
KEY_READ,
&instanceHandle
);
if (!NT_SUCCESS(status)) {
leave;
}
RtlInitUnicodeString(&unicodeKeyName, PCMCIA_REGISTRY_DETECTED_DEVICE_KEY);
InitializeObjectAttributes(
&objectAttributes,
&unicodeKeyName,
OBJ_CASE_INSENSITIVE,
instanceHandle,
NULL);
status = ZwOpenKey(¶metersHandle,
KEY_READ,
&objectAttributes);
if (!NT_SUCCESS(status)) {
leave;
}
RtlZeroMemory(queryTable, sizeof(queryTable));
queryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
queryTable[0].Name = L"ControllerType";
queryTable[0].EntryContext = &controllerType;
queryTable[0].DefaultType = REG_DWORD;
queryTable[0].DefaultData = &invalid;
queryTable[0].DefaultLength = sizeof(ULONG);
status = RtlQueryRegistryValues(RTL_REGISTRY_HANDLE,
(PWSTR) parametersHandle,
queryTable,
NULL,
NULL);
if (!NT_SUCCESS(status)) {
leave;
}
if (controllerType == invalid) {
*ControllerType = PcmciaIntelCompatible;
} else {
*ControllerType = (PCMCIA_CONTROLLER_TYPE) controllerType;
}
} finally {
if (instanceHandle != NULL) {
ZwClose(instanceHandle);
}
if (parametersHandle != NULL) {
ZwClose(parametersHandle);
}
}
return status;
}
NTSTATUS
PcmciaSetLegacyDetectedControllerType(
IN PDEVICE_OBJECT Pdo,
IN PCMCIA_CONTROLLER_TYPE ControllerType
)
/*++
Routine Description:
This routine 'remembers' - by setting a value in the registry -
the type of the pcmcia controller that has been legacy detected
to be retrieved and used in subsequent boots - if legacy re-detection
of the controller is not performed
Arguments:
Pdo - The Physical device object corresponding to the PCMCIA controller
DeviceExtension - Device extension of the fdo corresponding to the
controller
Return value:
Status
--*/
{
HANDLE instanceHandle;
NTSTATUS status;
OBJECT_ATTRIBUTES objectAttributes;
HANDLE parametersHandle;
UNICODE_STRING unicodeString;
PAGED_CODE();
//
// Get a handle to the registry devnode for this pdo
//
status = IoOpenDeviceRegistryKey(Pdo,
PLUGPLAY_REGKEY_DEVICE,
KEY_CREATE_SUB_KEY,
&instanceHandle);
if (!NT_SUCCESS(status)) {
return status;
}
//
// Open or create a sub-key for this devnode to store
// the information in
//
RtlInitUnicodeString(&unicodeString, PCMCIA_REGISTRY_DETECTED_DEVICE_KEY);
InitializeObjectAttributes(&objectAttributes,
&unicodeString,
OBJ_CASE_INSENSITIVE,
instanceHandle,
NULL);
status = ZwCreateKey(¶metersHandle,
KEY_SET_VALUE,
&objectAttributes,
0,
NULL,
REG_OPTION_NON_VOLATILE,
NULL);
if (!NT_SUCCESS(status)) {
ZwClose(instanceHandle);
return status;
}
//
// Set the controller type value in the registry
//
RtlInitUnicodeString(&unicodeString, L"ControllerType");
status = ZwSetValueKey(parametersHandle,
&unicodeString,
0,
REG_DWORD,
&ControllerType,
sizeof(ControllerType));
ZwClose(parametersHandle);
ZwClose(instanceHandle);
return status;
}