/* GLOBALS ********************************************************************/
+BOOLEAN PciRunningDatacenter;
+PDRIVER_OBJECT PciDriverObject;
+KEVENT PciGlobalLock;
+KEVENT PciBusLock;
+KEVENT PciLegacyDescriptionLock;
+BOOLEAN PciLockDeviceResources;
+BOOLEAN PciEnableNativeModeATA;
+ULONG PciSystemWideHackFlags;
+PPCI_IRQ_ROUTING_TABLE PciIrqRoutingTable;
+PWATCHDOG_TABLE WdTable;
+PPCI_HACK_ENTRY PciHackTable;
+
/* FUNCTIONS ******************************************************************/
+NTSTATUS
+NTAPI
+PciAcpiFindRsdt(OUT PACPI_BIOS_MULTI_NODE *AcpiMultiNode)
+{
+ BOOLEAN Result;
+ NTSTATUS Status;
+ HANDLE KeyHandle, SubKey;
+ ULONG NumberOfBytes, i, Length;
+ PKEY_FULL_INFORMATION FullInfo;
+ PKEY_BASIC_INFORMATION KeyInfo;
+ PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
+ PACPI_BIOS_MULTI_NODE NodeData;
+ UNICODE_STRING ValueName;
+ struct
+ {
+ CM_FULL_RESOURCE_DESCRIPTOR Descriptor;
+ ACPI_BIOS_MULTI_NODE Node;
+ } *Package;
+
+ /* So we know what to free at the end of the body */
+ ValueInfo = NULL;
+ KeyInfo = NULL;
+ KeyHandle = NULL;
+ FullInfo = NULL;
+ Package = NULL;
+ do
+ {
+ /* Open the ACPI BIOS key */
+ Result = PciOpenKey(L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\"
+ L"System\\MultiFunctionAdapter",
+ NULL,
+ KEY_QUERY_VALUE,
+ &KeyHandle,
+ &Status);
+ if (!Result) break;
+
+ /* Query how much space should be allocated for the key information */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ NULL,
+ sizeof(ULONG),
+ &NumberOfBytes);
+ if (Status != STATUS_BUFFER_TOO_SMALL) break;
+
+ /* Allocate the space required */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ FullInfo = ExAllocatePoolWithTag(PagedPool, NumberOfBytes, PCI_POOL_TAG);
+ if ( !FullInfo ) break;
+
+ /* Now query the key information that's needed */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ FullInfo,
+ NumberOfBytes,
+ &NumberOfBytes);
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Allocate enough space to hold the value information plus the name */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ Length = FullInfo->MaxNameLen + 26;
+ KeyInfo = ExAllocatePoolWithTag(PagedPool, Length, PCI_POOL_TAG);
+ if ( !KeyInfo ) break;
+
+ /* Allocate the value information and name we expect to find */
+ ValueInfo = ExAllocatePoolWithTag(PagedPool,
+ sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
+ sizeof(L"ACPI BIOS"),
+ PCI_POOL_TAG);
+ if (!ValueInfo) break;
+
+ /* Loop each sub-key */
+ i = 0;
+ while (TRUE)
+ {
+ /* Query each sub-key */
+ Status = ZwEnumerateKey(KeyHandle,
+ i++,
+ KeyBasicInformation,
+ KeyInfo,
+ Length,
+ &NumberOfBytes);
+ if (Status == STATUS_NO_MORE_ENTRIES) break;
+
+ /* Null-terminate the keyname, because the kernel does not */
+ KeyInfo->Name[KeyInfo->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
+
+ /* Open this subkey */
+ Result = PciOpenKey(KeyInfo->Name,
+ KeyHandle,
+ KEY_QUERY_VALUE,
+ &SubKey,
+ &Status);
+ if (Result)
+ {
+ /* Query the identifier value for this subkey */
+ RtlInitUnicodeString(&ValueName, L"Identifier");
+ Status = ZwQueryValueKey(SubKey,
+ &ValueName,
+ KeyValuePartialInformation,
+ ValueInfo,
+ sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
+ sizeof(L"ACPI BIOS"),
+ &NumberOfBytes);
+ if (NT_SUCCESS(Status))
+ {
+ /* Check if this is the PCI BIOS subkey */
+ if (!wcsncmp((PWCHAR)ValueInfo->Data,
+ L"ACPI BIOS",
+ ValueInfo->DataLength))
+ {
+ /* It is, proceed to query the PCI IRQ routing table */
+ Status = PciGetRegistryValue(L"Configuration Data",
+ KeyInfo->Name,
+ KeyHandle,
+ REG_FULL_RESOURCE_DESCRIPTOR,
+ (PVOID*)&Package,
+ &NumberOfBytes);
+ ZwClose(SubKey);
+ break;
+ }
+ }
+
+ /* Close the subkey and try the next one */
+ ZwClose(SubKey);
+ }
+ }
+
+ /* Check if we got here because the routing table was found */
+ if (!NT_SUCCESS(Status))
+ {
+ /* This should only fail if we're out of entries */
+ ASSERT(Status == STATUS_NO_MORE_ENTRIES);
+ break;
+ }
+
+ /* Check if a descriptor was found */
+ if (!Package) break;
+
+ /* The configuration data is a resource list, and the BIOS node follows */
+ NodeData = &Package->Node;
+
+ /* How many E820 memory entries are there? */
+ Length = sizeof(ACPI_BIOS_MULTI_NODE) +
+ (NodeData->Count - 1) * sizeof(ACPI_E820_ENTRY);
+
+ /* Allocate the buffer needed to copy the information */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ *AcpiMultiNode = ExAllocatePoolWithTag(NonPagedPool, Length, PCI_POOL_TAG);
+ if (!*AcpiMultiNode) break;
+
+ /* Copy the data */
+ RtlCopyMemory(*AcpiMultiNode, NodeData, Length);
+ Status = STATUS_SUCCESS;
+ } while (FALSE);
+
+ /* Close any opened keys, free temporary allocations, and return status */
+ if (Package) ExFreePoolWithTag(Package, 0);
+ if (ValueInfo) ExFreePoolWithTag(ValueInfo, 0);
+ if (KeyInfo) ExFreePoolWithTag(KeyInfo, 0);
+ if (FullInfo) ExFreePoolWithTag(FullInfo, 0);
+ if (KeyHandle) ZwClose(KeyHandle);
+ return Status;
+}
+
+PVOID
+NTAPI
+PciGetAcpiTable(IN ULONG TableCode)
+{
+ PDESCRIPTION_HEADER Header;
+ PACPI_BIOS_MULTI_NODE AcpiMultiNode;
+ PRSDT Rsdt;
+ PXSDT Xsdt;
+ ULONG EntryCount, TableLength, Offset, CurrentEntry;
+ PVOID TableBuffer, MappedAddress;
+ PHYSICAL_ADDRESS PhysicalAddress;
+ NTSTATUS Status;
+
+ /* Try to find the RSDT or XSDT */
+ Status = PciAcpiFindRsdt(&AcpiMultiNode);
+ if (!NT_SUCCESS(Status))
+ {
+ /* No ACPI on the machine */
+ DPRINT1("AcpiFindRsdt() Failed!\n");
+ return NULL;
+ }
+
+ /* Map the RSDT with the minimum size allowed */
+ MappedAddress = MmMapIoSpace(AcpiMultiNode->RsdtAddress,
+ sizeof(DESCRIPTION_HEADER),
+ MmNonCached);
+ Header = MappedAddress;
+ if (!Header) return NULL;
+
+ /* Check how big the table really is and get rid of the temporary header */
+ TableLength = Header->Length;
+ MmUnmapIoSpace(Header, sizeof(DESCRIPTION_HEADER));
+ Header = NULL;
+
+ /* Map its true size */
+ MappedAddress = MmMapIoSpace(AcpiMultiNode->RsdtAddress,
+ TableLength,
+ MmNonCached);
+ Rsdt = MappedAddress;
+ Xsdt = MappedAddress;
+ ExFreePoolWithTag(AcpiMultiNode, 0);
+ if (!Rsdt) return NULL;
+
+ /* Validate the table's signature */
+ if ((Rsdt->Header.Signature != RSDT_SIGNATURE) &&
+ (Rsdt->Header.Signature != XSDT_SIGNATURE))
+ {
+ /* Very bad: crash */
+ HalDisplayString("RSDT table contains invalid signature\n");
+ MmUnmapIoSpace(Rsdt, TableLength);
+ return NULL;
+ }
+
+ /* Smallest RSDT/XSDT is one without table entries */
+ Offset = FIELD_OFFSET(RSDT, Tables);
+ if (Rsdt->Header.Signature == XSDT_SIGNATURE)
+ {
+ /* Figure out total size of table and the offset */
+ TableLength = Xsdt->Header.Length;
+ if (TableLength < Offset) Offset = Xsdt->Header.Length;
+
+ /* The entries are each 64-bits, so count them */
+ EntryCount = (TableLength - Offset) / sizeof(PHYSICAL_ADDRESS);
+ }
+ else
+ {
+ /* Figure out total size of table and the offset */
+ TableLength = Rsdt->Header.Length;
+ if (TableLength < Offset) Offset = Rsdt->Header.Length;
+
+ /* The entries are each 32-bits, so count them */
+ EntryCount = (TableLength - Offset) / sizeof(ULONG);
+ }
+
+ /* Start at the beginning of the array and loop it */
+ for (CurrentEntry = 0; CurrentEntry < EntryCount; CurrentEntry++)
+ {
+ /* Are we using the XSDT? */
+ if (Rsdt->Header.Signature != XSDT_SIGNATURE)
+ {
+ /* Read the 32-bit physical address */
+ PhysicalAddress.QuadPart = Rsdt->Tables[CurrentEntry];
+ }
+ else
+ {
+ /* Read the 64-bit physical address */
+ PhysicalAddress = Xsdt->Tables[CurrentEntry];
+ }
+
+ /* Map this table */
+ Header = MmMapIoSpace(PhysicalAddress,
+ sizeof(DESCRIPTION_HEADER),
+ MmNonCached);
+ if (!Header) break;
+
+ /* Check if this is the table that's being asked for */
+ if (Header->Signature == TableCode)
+ {
+ /* Allocate a buffer for it */
+ TableBuffer = ExAllocatePoolWithTag(PagedPool,
+ Header->Length,
+ PCI_POOL_TAG);
+ if (!TableBuffer) break;
+
+ /* Copy the table into the buffer */
+ RtlCopyMemory(TableBuffer, Header, Header->Length);
+ }
+
+ /* Done with this table, keep going */
+ MmUnmapIoSpace(Header, sizeof(DESCRIPTION_HEADER));
+ }
+
+ if (Header) MmUnmapIoSpace(Header, sizeof(DESCRIPTION_HEADER));
+ return NULL;
+}
+
+NTSTATUS
+NTAPI
+PciGetIrqRoutingTableFromRegistry(OUT PPCI_IRQ_ROUTING_TABLE *PciRoutingTable)
+{
+ BOOLEAN Result;
+ NTSTATUS Status;
+ HANDLE KeyHandle, SubKey;
+ ULONG NumberOfBytes, i, Length;
+ PKEY_FULL_INFORMATION FullInfo;
+ PKEY_BASIC_INFORMATION KeyInfo;
+ PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
+ UNICODE_STRING ValueName;
+ struct
+ {
+ CM_FULL_RESOURCE_DESCRIPTOR Descriptor;
+ PCI_IRQ_ROUTING_TABLE Table;
+ } *Package;
+
+ /* So we know what to free at the end of the body */
+ Package = NULL;
+ ValueInfo = NULL;
+ KeyInfo = NULL;
+ KeyHandle = NULL;
+ FullInfo = NULL;
+ do
+ {
+ /* Open the BIOS key */
+ Result = PciOpenKey(L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\"
+ L"System\\MultiFunctionAdapter",
+ NULL,
+ KEY_QUERY_VALUE,
+ &KeyHandle,
+ &Status);
+ if (!Result) break;
+
+ /* Query how much space should be allocated for the key information */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ NULL,
+ sizeof(ULONG),
+ &NumberOfBytes);
+ if (Status != STATUS_BUFFER_TOO_SMALL) break;
+
+ /* Allocate the space required */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ FullInfo = ExAllocatePoolWithTag(PagedPool, NumberOfBytes, PCI_POOL_TAG);
+ if ( !FullInfo ) break;
+
+ /* Now query the key information that's needed */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ FullInfo,
+ NumberOfBytes,
+ &NumberOfBytes);
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Allocate enough space to hold the value information plus the name */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ Length = FullInfo->MaxNameLen + 26;
+ KeyInfo = ExAllocatePoolWithTag(PagedPool, Length, PCI_POOL_TAG);
+ if (!KeyInfo) break;
+
+ /* Allocate the value information and name we expect to find */
+ ValueInfo = ExAllocatePoolWithTag(PagedPool,
+ sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
+ sizeof(L"PCI BIOS"),
+ PCI_POOL_TAG);
+ if (!ValueInfo) break;
+
+ /* Loop each sub-key */
+ i = 0;
+ while (TRUE)
+ {
+ /* Query each sub-key */
+ Status = ZwEnumerateKey(KeyHandle,
+ i++,
+ KeyBasicInformation,
+ KeyInfo,
+ Length,
+ &NumberOfBytes);
+ if (Status == STATUS_NO_MORE_ENTRIES) break;
+
+ /* Null-terminate the keyname, because the kernel does not */
+ KeyInfo->Name[KeyInfo->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
+
+ /* Open this subkey */
+ Result = PciOpenKey(KeyInfo->Name,
+ KeyHandle,
+ KEY_QUERY_VALUE,
+ &SubKey,
+ &Status);
+ if (Result)
+ {
+ /* Query the identifier value for this subkey */
+ RtlInitUnicodeString(&ValueName, L"Identifier");
+ Status = ZwQueryValueKey(SubKey,
+ &ValueName,
+ KeyValuePartialInformation,
+ ValueInfo,
+ sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
+ sizeof(L"PCI BIOS"),
+ &NumberOfBytes);
+ if (NT_SUCCESS(Status))
+ {
+ /* Check if this is the PCI BIOS subkey */
+ if (!wcsncmp((PWCHAR)ValueInfo->Data,
+ L"PCI BIOS",
+ ValueInfo->DataLength))
+ {
+ /* It is, proceed to query the PCI IRQ routing table */
+ Status = PciGetRegistryValue(L"Configuration Data",
+ L"RealModeIrqRoutingTable"
+ L"\\0",
+ SubKey,
+ REG_FULL_RESOURCE_DESCRIPTOR,
+ (PVOID*)&Package,
+ &NumberOfBytes);
+ ZwClose(SubKey);
+ break;
+ }
+ }
+
+ /* Close the subkey and try the next one */
+ ZwClose(SubKey);
+ }
+ }
+
+ /* Check if we got here because the routing table was found */
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Check if a descriptor was found */
+ if (!Package) break;
+
+ /* Make sure the buffer is large enough to hold the table */
+ if ((NumberOfBytes < sizeof(*Package)) ||
+ (Package->Table.TableSize >
+ (NumberOfBytes - sizeof(CM_FULL_RESOURCE_DESCRIPTOR))))
+ {
+ /* Invalid package size */
+ Status = STATUS_UNSUCCESSFUL;
+ break;
+ }
+
+ /* Allocate space for the table */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ *PciRoutingTable = ExAllocatePoolWithTag(PagedPool,
+ NumberOfBytes,
+ PCI_POOL_TAG);
+ if (!*PciRoutingTable) break;
+
+ /* Copy the registry data */
+ RtlCopyMemory(*PciRoutingTable,
+ &Package->Table,
+ NumberOfBytes - sizeof(CM_FULL_RESOURCE_DESCRIPTOR));
+ Status = STATUS_SUCCESS;
+ } while (FALSE);
+
+ /* Close any opened keys, free temporary allocations, and return status */
+ if (Package) ExFreePoolWithTag(Package, 0);
+ if (ValueInfo) ExFreePoolWithTag(ValueInfo, 0);
+ if (KeyInfo) ExFreePoolWithTag(KeyInfo, 0);
+ if (FullInfo) ExFreePoolWithTag(FullInfo, 0);
+ if (KeyHandle) ZwClose(KeyHandle);
+ return Status;
+}
+
+NTSTATUS
+NTAPI
+PciBuildHackTable(IN HANDLE KeyHandle)
+{
+ PKEY_FULL_INFORMATION FullInfo;
+ ULONG i, HackCount;
+ PKEY_VALUE_FULL_INFORMATION ValueInfo;
+ PPCI_HACK_ENTRY Entry;
+ NTSTATUS Status;
+ ULONG NameLength, ResultLength;
+ ULONGLONG HackFlags;
+
+ /* So we know what to free at the end of the body */
+ FullInfo = NULL;
+ ValueInfo = NULL;
+ do
+ {
+ /* Query the size required for full key information */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ NULL,
+ 0,
+ &ResultLength);
+ if (Status != STATUS_BUFFER_TOO_SMALL) break;
+
+ /* Allocate the space required to hold the full key information */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ ASSERT(ResultLength > 0);
+ FullInfo = ExAllocatePoolWithTag(PagedPool, ResultLength, PCI_POOL_TAG);
+ if (!FullInfo) break;
+
+ /* Go ahead and query the key information */
+ Status = ZwQueryKey(KeyHandle,
+ KeyFullInformation,
+ FullInfo,
+ ResultLength,
+ &ResultLength);
+ if (!NT_SUCCESS(Status)) break;
+
+ /* The only piece of information that's needed is the count of values */
+ HackCount = FullInfo->Values;
+
+ /* Free the structure now */
+ ExFreePoolWithTag(FullInfo, 0);
+ FullInfo = NULL;
+
+ /* Allocate the hack table, now that the number of entries is known */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ ResultLength = sizeof(PCI_HACK_ENTRY) * HackCount;
+ PciHackTable = ExAllocatePoolWithTag(NonPagedPool,
+ ResultLength +
+ sizeof(PCI_HACK_ENTRY),
+ PCI_POOL_TAG);
+ if (!PciHackTable) break;
+
+ /* Allocate the space needed to hold the full value information */
+ ValueInfo = ExAllocatePoolWithTag(NonPagedPool,
+ sizeof(KEY_VALUE_FULL_INFORMATION) +
+ PCI_HACK_ENTRY_FULL_SIZE,
+ PCI_POOL_TAG);
+ if (!PciHackTable) break;
+
+ /* Loop each value in the registry */
+ Entry = &PciHackTable[0];
+ for (i = 0; i < HackCount; i++)
+ {
+ /* Get the entry for this value */
+ Entry = &PciHackTable[i];
+
+ /* Query the value in the key */
+ Status = ZwEnumerateValueKey(KeyHandle,
+ i,
+ KeyValueFullInformation,
+ ValueInfo,
+ sizeof(KEY_VALUE_FULL_INFORMATION) +
+ PCI_HACK_ENTRY_FULL_SIZE,
+ &ResultLength);
+ if (!NT_SUCCESS(Status))
+ {
+ /* Check why the call failed */
+ if ((Status != STATUS_BUFFER_OVERFLOW) &&
+ (Status != STATUS_BUFFER_TOO_SMALL))
+ {
+ /* The call failed due to an unknown error, bail out */
+ break;
+ }
+
+ /* The data seems to mismatch, try the next key in the list */
+ continue;
+ }
+
+ /* Check if the value data matches what's expected */
+ if ((ValueInfo->Type != REG_BINARY) ||
+ (ValueInfo->DataLength != sizeof(ULONGLONG)))
+ {
+ /* It doesn't, try the next key in the list */
+ continue;
+ }
+
+ /* Read the actual hack flags */
+ HackFlags = *(PULONGLONG)((ULONG_PTR)ValueInfo +
+ ValueInfo->DataOffset);
+
+ /* Check what kind of errata entry this is, based on the name */
+ NameLength = ValueInfo->NameLength;
+ if ((NameLength != PCI_HACK_ENTRY_SIZE) &&
+ (NameLength != PCI_HACK_ENTRY_REV_SIZE) &&
+ (NameLength != PCI_HACK_ENTRY_SUBSYS_SIZE) &&
+ (NameLength != PCI_HACK_ENTRY_FULL_SIZE))
+ {
+ /* It's an invalid entry, skip it */
+ DPRINT1("Skipping hack entry with invalid length name\n");
+ continue;
+ }
+
+ /* Initialize the entry */
+ RtlZeroMemory(Entry, sizeof(PCI_HACK_ENTRY));
+
+ /* Get the vendor and device data */
+ if (!(PciStringToUSHORT(ValueInfo->Name, &Entry->VendorID)) ||
+ !(PciStringToUSHORT(&ValueInfo->Name[4], &Entry->DeviceID)))
+ {
+ /* This failed, try the next entry */
+ continue;
+ }
+
+ /* Check if the entry contains subsystem information */
+ if ((NameLength == PCI_HACK_ENTRY_SUBSYS_SIZE) ||
+ (NameLength == PCI_HACK_ENTRY_FULL_SIZE))
+ {
+ /* Get the data */
+ if (!(PciStringToUSHORT(&ValueInfo->Name[8],
+ &Entry->SubVendorID)) ||
+ !(PciStringToUSHORT(&ValueInfo->Name[12],
+ &Entry->SubSystemID)))
+ {
+ /* This failed, try the next entry */
+ continue;
+ }
+
+ /* Save the fact this entry has finer controls */
+ Entry->Flags |= PCI_HACK_HAS_SUBSYSTEM_INFO;
+ }
+
+ /* Check if the entry contains revision information */
+ if ((NameLength == PCI_HACK_ENTRY_REV_SIZE) ||
+ (NameLength == PCI_HACK_ENTRY_FULL_SIZE))
+ {
+ /* Get the data */
+ if (!PciStringToUSHORT(&ValueInfo->Name[16],
+ &Entry->RevisionID))
+ {
+ /* This failed, try the next entry */
+ continue;
+ }
+
+ /* Save the fact this entry has finer controls */
+ Entry->Flags |= PCI_HACK_HAS_REVISION_INFO;
+ }
+
+ /* Only the last entry should have this set */
+ ASSERT(Entry->VendorID != PCI_INVALID_VENDORID);
+
+ /* Save the actual hack flags */
+ Entry->HackFlags = HackFlags;
+
+ /* Print out for the debugger's sake */
+#ifdef HACK_DEBUG
+ DPRINT1("Adding Hack entry for Vendor:0x%04x Device:0x%04x ",
+ Entry->VendorID, Entry->DeviceID);
+ if (Entry->Flags & PCI_HACK_HAS_SUBSYSTEM_INFO)
+ DbgPrint("SybSys:0x%04x SubVendor:0x%04x ",
+ Entry->SubSystemID, Entry->SubVendorID);
+ if (Entry->Flags & PCI_HACK_HAS_REVISION_INFO)
+ DbgPrint("Revision:0x%02x", Entry->RevisionID);
+ DbgPrint(" = 0x%I64x\n", Entry->HackFlags);
+#endif
+ }
+
+ /* Bail out in case of failure */
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Terminate the table with an invalid entry */
+ ASSERT(Entry < (PciHackTable + HackCount + 1));
+ Entry->VendorID = PCI_INVALID_VENDORID;
+
+ /* Success path, free the temporary registry data */
+ ExFreePoolWithTag(ValueInfo, 0);
+ return STATUS_SUCCESS;
+ } while (TRUE);
+
+ /* Failure path, free temporary allocations and return failure code */
+ ASSERT(!NT_SUCCESS(Status));
+ if (FullInfo) ExFreePool(FullInfo);
+ if (ValueInfo) ExFreePool(ValueInfo);
+ if (PciHackTable) ExFreePool(PciHackTable);
+ return Status;
+}
+
+NTSTATUS
+NTAPI
+PciGetDebugPorts(IN HANDLE DebugKey)
+{
+ /* This function is not yet implemented */
+ UNIMPLEMENTED_DBGBREAK();
+ return STATUS_SUCCESS;
+}
+
+VOID
+NTAPI
+PciDriverUnload(IN PDRIVER_OBJECT DriverObject)
+{
+ /* This function is not yet implemented */
+ UNIMPLEMENTED_DBGBREAK("PCI: Unload\n");
+}
+
NTSTATUS
NTAPI
DriverEntry(IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath)
{
+ HANDLE KeyHandle, ParametersKey, DebugKey, ControlSetKey;
+ BOOLEAN Result;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ ULONG ResultLength;
+ PULONG Value;
+ PWCHAR StartOptions;
+ UNICODE_STRING OptionString, PciLockString;
+ NTSTATUS Status;
DPRINT1("PCI: DriverEntry!\n");
- /* FIXME: TODO */
- return STATUS_NOT_SUPPORTED;
+ /* Setup initial loop variables */
+ KeyHandle = NULL;
+ ParametersKey = NULL;
+ DebugKey = NULL;
+ ControlSetKey = NULL;
+ do
+ {
+ /* Remember our object so we can get it to it later */
+ PciDriverObject = DriverObject;
+
+ /* Setup the IRP dispatcher */
+ DriverObject->MajorFunction[IRP_MJ_POWER] = PciDispatchIrp;
+ DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = PciDispatchIrp;
+ DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = PciDispatchIrp;
+ DriverObject->MajorFunction[IRP_MJ_PNP] = PciDispatchIrp;
+ DriverObject->DriverUnload = PciDriverUnload;
+
+ /* This is how we'll detect a new PCI bus */
+ DriverObject->DriverExtension->AddDevice = PciAddDevice;
+
+ /* Open the PCI key */
+ InitializeObjectAttributes(&ObjectAttributes,
+ RegistryPath,
+ OBJ_CASE_INSENSITIVE,
+ NULL,
+ NULL);
+ Status = ZwOpenKey(&KeyHandle, KEY_QUERY_VALUE, &ObjectAttributes);
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Open the Parameters subkey */
+ Result = PciOpenKey(L"Parameters",
+ KeyHandle,
+ KEY_QUERY_VALUE,
+ &ParametersKey,
+ &Status);
+ //if (!Result) break;
+
+ /* Build the list of all known PCI erratas */
+ Status = PciBuildHackTable(ParametersKey);
+ //if (!NT_SUCCESS(Status)) break;
+
+ /* Open the debug key, if it exists */
+ Result = PciOpenKey(L"Debug",
+ KeyHandle,
+ KEY_QUERY_VALUE,
+ &DebugKey,
+ &Status);
+ if (Result)
+ {
+ /* There are PCI debug devices, go discover them */
+ Status = PciGetDebugPorts(DebugKey);
+ if (!NT_SUCCESS(Status)) break;
+ }
+
+ /* Initialize the synchronization locks */
+ KeInitializeEvent(&PciGlobalLock, SynchronizationEvent, TRUE);
+ KeInitializeEvent(&PciBusLock, SynchronizationEvent, TRUE);
+ KeInitializeEvent(&PciLegacyDescriptionLock, SynchronizationEvent, TRUE);
+
+ /* Open the control set key */
+ Result = PciOpenKey(L"\\Registry\\Machine\\System\\CurrentControlSet",
+ NULL,
+ KEY_QUERY_VALUE,
+ &ControlSetKey,
+ &Status);
+ if (!Result) break;
+
+ /* Read the command line */
+ Status = PciGetRegistryValue(L"SystemStartOptions",
+ L"Control",
+ ControlSetKey,
+ REG_SZ,
+ (PVOID*)&StartOptions,
+ &ResultLength);
+ if (NT_SUCCESS(Status))
+ {
+ /* Initialize the command-line as a string */
+ OptionString.Buffer = StartOptions;
+ OptionString.MaximumLength = OptionString.Length = ResultLength;
+
+ /* Check if the command-line has the PCILOCK argument */
+ RtlInitUnicodeString(&PciLockString, L"PCILOCK");
+ if (PciUnicodeStringStrStr(&OptionString, &PciLockString, TRUE))
+ {
+ /* The PCI Bus driver will keep the BIOS-assigned resources */
+ PciLockDeviceResources = TRUE;
+ }
+
+ /* This data isn't needed anymore */
+ ExFreePoolWithTag(StartOptions, 0);
+ }
+
+ /* The PCILOCK feature can also be enabled per-system in the registry */
+ Status = PciGetRegistryValue(L"PCILock",
+ L"Control\\BiosInfo\\PCI",
+ ControlSetKey,
+ REG_DWORD,
+ (PVOID*)&Value,
+ &ResultLength);
+ if (NT_SUCCESS(Status))
+ {
+ /* Read the value it's been set to. This overrides /PCILOCK */
+ if (ResultLength == sizeof(ULONG)) PciLockDeviceResources = *Value;
+ ExFreePoolWithTag(Value, 0);
+ }
+
+ /* The system can have global PCI erratas in the registry */
+ Status = PciGetRegistryValue(L"HackFlags",
+ L"Control\\PnP\\PCI",
+ ControlSetKey,
+ REG_DWORD,
+ (PVOID*)&Value,
+ &ResultLength);
+ if (NT_SUCCESS(Status))
+ {
+ /* Read them in */
+ if (ResultLength == sizeof(ULONG)) PciSystemWideHackFlags = *Value;
+ ExFreePoolWithTag(Value, 0);
+ }
+
+ /* Check if the system should allow native ATA support */
+ Status = PciGetRegistryValue(L"EnableNativeModeATA",
+ L"Control\\PnP\\PCI",
+ ControlSetKey,
+ REG_DWORD,
+ (PVOID*)&Value,
+ &ResultLength);
+ if (NT_SUCCESS(Status))
+ {
+ /* This key is typically set by drivers, but users can force it */
+ if (ResultLength == sizeof(ULONG)) PciEnableNativeModeATA = *Value;
+ ExFreePoolWithTag(Value, 0);
+ }
+
+ /* Build the range lists for all the excluded resource areas */
+ Status = PciBuildDefaultExclusionLists();
+ if (!NT_SUCCESS(Status)) break;
+
+ /* Read the PCI IRQ Routing Table that the loader put in the registry */
+ PciGetIrqRoutingTableFromRegistry(&PciIrqRoutingTable);
+
+ /* Take over the HAL's default PCI Bus Handler routines */
+ PciHookHal();
+
+ /* Initialize verification of PCI BIOS and devices, if requested */
+ PciVerifierInit(DriverObject);
+
+ /* Check if this is a Datacenter SKU, which impacts IRQ alignment */
+ PciRunningDatacenter = PciIsDatacenter();
+ if (PciRunningDatacenter) DPRINT1("PCI running on datacenter build\n");
+
+ /* Check if the system has an ACPI Hardware Watchdog Timer */
+ //WdTable = PciGetAcpiTable(WDRT_SIGNATURE);
+ Status = STATUS_SUCCESS;
+ } while (FALSE);
+
+ /* Close all opened keys, return driver status to PnP Manager */
+ if (KeyHandle) ZwClose(KeyHandle);
+ if (ControlSetKey) ZwClose(ControlSetKey);
+ if (ParametersKey) ZwClose(ParametersKey);
+ if (DebugKey) ZwClose(DebugKey);
+ return Status;
}
/* EOF */
projects / reactos.git / blobdiff