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[ISAPNP] Make Read Data Port PDO unique
This PDO is created only once during start of first FDO. Other buses will remain in an inactive state until the first FDO receives a remove request. CORE-17034
This commit is contained in:
Dmitry Borisov
parent
c92bec609b
commit
21514e473f
1 changed files with 128 additions and 95 deletions
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@ -11,6 +11,8 @@
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#define NDEBUG
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#include <debug.h>
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BOOLEAN ReadPortCreated = FALSE;
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static
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CODE_SEG("PAGE")
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NTSTATUS
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@ -299,94 +301,6 @@ IsaPnpCreateLogicalDeviceResources(
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return STATUS_SUCCESS;
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}
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CODE_SEG("PAGE")
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NTSTATUS
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IsaPnpFillDeviceRelations(
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_In_ PISAPNP_FDO_EXTENSION FdoExt,
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_Inout_ PIRP Irp,
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_In_ BOOLEAN IncludeDataPort)
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{
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PISAPNP_PDO_EXTENSION PdoExt;
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NTSTATUS Status = STATUS_SUCCESS;
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PLIST_ENTRY CurrentEntry;
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PISAPNP_LOGICAL_DEVICE IsaDevice;
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PDEVICE_RELATIONS DeviceRelations;
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ULONG i = 0;
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PAGED_CODE();
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DeviceRelations = ExAllocatePool(NonPagedPool,
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sizeof(DEVICE_RELATIONS) + sizeof(DEVICE_OBJECT) * FdoExt->DeviceCount);
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if (!DeviceRelations)
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{
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return STATUS_NO_MEMORY;
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}
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if (IncludeDataPort)
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{
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DeviceRelations->Objects[i++] = FdoExt->ReadPortPdo;
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ObReferenceObject(FdoExt->ReadPortPdo);
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}
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CurrentEntry = FdoExt->DeviceListHead.Flink;
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while (CurrentEntry != &FdoExt->DeviceListHead)
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{
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IsaDevice = CONTAINING_RECORD(CurrentEntry, ISAPNP_LOGICAL_DEVICE, DeviceLink);
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if (!IsaDevice->Pdo)
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{
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Status = IoCreateDevice(FdoExt->DriverObject,
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sizeof(ISAPNP_PDO_EXTENSION),
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NULL,
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FILE_DEVICE_CONTROLLER,
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FILE_DEVICE_SECURE_OPEN | FILE_AUTOGENERATED_DEVICE_NAME,
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FALSE,
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&IsaDevice->Pdo);
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if (!NT_SUCCESS(Status))
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{
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break;
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}
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IsaDevice->Pdo->Flags &= ~DO_DEVICE_INITIALIZING;
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//Device->Pdo->Flags |= DO_POWER_PAGABLE;
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PdoExt = IsaDevice->Pdo->DeviceExtension;
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RtlZeroMemory(PdoExt, sizeof(ISAPNP_PDO_EXTENSION));
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PdoExt->Common.IsFdo = FALSE;
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PdoExt->Common.Self = IsaDevice->Pdo;
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PdoExt->Common.State = dsStopped;
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PdoExt->IsaPnpDevice = IsaDevice;
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PdoExt->FdoExt = FdoExt;
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Status = IsaPnpCreateLogicalDeviceRequirements(PdoExt);
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if (NT_SUCCESS(Status))
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Status = IsaPnpCreateLogicalDeviceResources(PdoExt);
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if (!NT_SUCCESS(Status))
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{
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IoDeleteDevice(IsaDevice->Pdo);
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IsaDevice->Pdo = NULL;
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break;
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}
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}
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DeviceRelations->Objects[i++] = IsaDevice->Pdo;
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ObReferenceObject(IsaDevice->Pdo);
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CurrentEntry = CurrentEntry->Flink;
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}
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DeviceRelations->Count = i;
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Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
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return Status;
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}
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static IO_COMPLETION_ROUTINE ForwardIrpCompletion;
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static
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@ -603,6 +517,9 @@ IsaPnpCreateReadPortDO(
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NTSTATUS Status;
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PAGED_CODE();
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ASSERT(ReadPortCreated == FALSE);
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DPRINT("Creating Read Port\n");
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Status = IoCreateDevice(FdoExt->DriverObject,
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sizeof(ISAPNP_PDO_EXTENSION),
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@ -623,12 +540,133 @@ IsaPnpCreateReadPortDO(
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Status = IsaPnpCreateReadPortDORequirements(PdoExt);
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if (!NT_SUCCESS(Status))
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return Status;
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goto Failure;
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Status = IsaPnpCreateReadPortDOResources(PdoExt);
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if (!NT_SUCCESS(Status))
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goto Failure;
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FdoExt->ReadPortPdo->Flags &= ~DO_DEVICE_INITIALIZING;
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return Status;
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Failure:
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if (PdoExt->RequirementsList)
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ExFreePoolWithTag(PdoExt->RequirementsList, TAG_ISAPNP);
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if (PdoExt->ResourceList)
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ExFreePoolWithTag(PdoExt->ResourceList, TAG_ISAPNP);
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IoDeleteDevice(FdoExt->ReadPortPdo);
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return Status;
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}
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CODE_SEG("PAGE")
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NTSTATUS
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IsaPnpFillDeviceRelations(
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_In_ PISAPNP_FDO_EXTENSION FdoExt,
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_Inout_ PIRP Irp,
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_In_ BOOLEAN IncludeDataPort)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PLIST_ENTRY CurrentEntry;
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PISAPNP_LOGICAL_DEVICE IsaDevice;
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PDEVICE_RELATIONS DeviceRelations;
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ULONG PdoCount, i = 0;
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PAGED_CODE();
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/* Try to claim the Read Port for our FDO */
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if (!ReadPortCreated)
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{
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Status = IsaPnpCreateReadPortDO(FdoExt);
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if (!NT_SUCCESS(Status))
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return Status;
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ReadPortCreated = TRUE;
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}
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/* Inactive ISA bus */
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if (!FdoExt->ReadPortPdo)
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IncludeDataPort = FALSE;
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PdoCount = FdoExt->DeviceCount;
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if (IncludeDataPort)
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++PdoCount;
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DeviceRelations = ExAllocatePoolWithTag(PagedPool,
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FIELD_OFFSET(DEVICE_RELATIONS, Objects[PdoCount]),
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TAG_ISAPNP);
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if (!DeviceRelations)
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{
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return STATUS_NO_MEMORY;
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}
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if (IncludeDataPort)
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{
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DeviceRelations->Objects[i++] = FdoExt->ReadPortPdo;
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ObReferenceObject(FdoExt->ReadPortPdo);
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}
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CurrentEntry = FdoExt->DeviceListHead.Flink;
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while (CurrentEntry != &FdoExt->DeviceListHead)
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{
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PISAPNP_PDO_EXTENSION PdoExt;
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IsaDevice = CONTAINING_RECORD(CurrentEntry, ISAPNP_LOGICAL_DEVICE, DeviceLink);
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if (!IsaDevice->Pdo)
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{
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Status = IoCreateDevice(FdoExt->DriverObject,
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sizeof(ISAPNP_PDO_EXTENSION),
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NULL,
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FILE_DEVICE_CONTROLLER,
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FILE_DEVICE_SECURE_OPEN | FILE_AUTOGENERATED_DEVICE_NAME,
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FALSE,
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&IsaDevice->Pdo);
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if (!NT_SUCCESS(Status))
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{
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break;
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}
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IsaDevice->Pdo->Flags &= ~DO_DEVICE_INITIALIZING;
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//Device->Pdo->Flags |= DO_POWER_PAGABLE;
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PdoExt = IsaDevice->Pdo->DeviceExtension;
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RtlZeroMemory(PdoExt, sizeof(ISAPNP_PDO_EXTENSION));
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PdoExt->Common.IsFdo = FALSE;
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PdoExt->Common.Self = IsaDevice->Pdo;
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PdoExt->Common.State = dsStopped;
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PdoExt->IsaPnpDevice = IsaDevice;
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PdoExt->FdoExt = FdoExt;
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Status = IsaPnpCreateLogicalDeviceRequirements(PdoExt);
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if (NT_SUCCESS(Status))
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Status = IsaPnpCreateLogicalDeviceResources(PdoExt);
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if (!NT_SUCCESS(Status))
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{
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IoDeleteDevice(IsaDevice->Pdo);
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IsaDevice->Pdo = NULL;
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break;
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}
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}
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DeviceRelations->Objects[i++] = IsaDevice->Pdo;
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ObReferenceObject(IsaDevice->Pdo);
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CurrentEntry = CurrentEntry->Flink;
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}
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DeviceRelations->Count = i;
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Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
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return Status;
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}
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@ -677,12 +715,7 @@ IsaAddDevice(
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InitializeListHead(&FdoExt->DeviceListHead);
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KeInitializeEvent(&FdoExt->DeviceSyncEvent, SynchronizationEvent, TRUE);
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Status = IsaPnpCreateReadPortDO(FdoExt);
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if (!NT_SUCCESS(Status))
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return Status;
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Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
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FdoExt->ReadPortPdo->Flags &= ~DO_DEVICE_INITIALIZING;
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return STATUS_SUCCESS;
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}
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