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https://github.com/reactos/reactos.git
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[ISAPNP] Disable bus scan on unsupported platforms
This speeds up boot a bit and also decreases binary size. - Introduce a new CMake define ISAPNP_ENABLE that defined only in x86 platform when ISA PnP is supported.
This commit is contained in:
Dmitry Borisov
parent
e318d22940
commit
8939abf113
@ -1,11 +1,18 @@
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list(APPEND SOURCE
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isapnp.c
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pdo.c
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fdo.c
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hardware.c
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interface.c
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isapnp.h)
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if(ISAPNP_ENABLE)
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list(APPEND SOURCE
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fdo.c
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hardware.c
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interface.c
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isapnp.c
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isapnp.h
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pdo.c)
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else()
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list(APPEND SOURCE
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interface.c
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isapnp.h
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stub.c)
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endif()
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add_library(isapnp MODULE ${SOURCE} isapnp.rc)
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set_module_type(isapnp kernelmodedriver)
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284
drivers/bus/isapnp/stub.c
Normal file
284
drivers/bus/isapnp/stub.c
Normal file
@ -0,0 +1,284 @@
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/*
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* PROJECT: ReactOS ISA PnP Bus driver
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: Stub driver
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* COPYRIGHT: Copyright 2021 Dmitry Borisov <di.sean@protonmail.com>
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*/
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/*
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* This driver does nothing, and only used if a platform has no ISA PnP support.
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* We need to keep FDO because ACPI driver depends on it. The ACPI bus filter
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* attaches legacy ISA/LPC devices to this FDO.
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*/
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/* INCLUDES *******************************************************************/
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#include "isapnp.h"
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ******************************************************************/
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_Dispatch_type_(IRP_MJ_CREATE)
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_Dispatch_type_(IRP_MJ_CLOSE)
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static CODE_SEG("PAGE") DRIVER_DISPATCH_PAGED IsaStubCreateClose;
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static
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CODE_SEG("PAGE")
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NTSTATUS
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NTAPI
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IsaStubCreateClose(
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_In_ PDEVICE_OBJECT DeviceObject,
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_Inout_ PIRP Irp)
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{
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UNREFERENCED_PARAMETER(DeviceObject);
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PAGED_CODE();
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return STATUS_SUCCESS;
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}
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_Dispatch_type_(IRP_MJ_DEVICE_CONTROL)
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_Dispatch_type_(IRP_MJ_SYSTEM_CONTROL)
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static CODE_SEG("PAGE") DRIVER_DISPATCH_PAGED IsaStubForward;
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static
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CODE_SEG("PAGE")
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NTSTATUS
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NTAPI
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IsaStubForward(
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_In_ PDEVICE_OBJECT DeviceObject,
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_Inout_ PIRP Irp)
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{
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PISAPNP_FDO_EXTENSION FdoExt = DeviceObject->DeviceExtension;
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PAGED_CODE();
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IoSkipCurrentIrpStackLocation(Irp);
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return IoCallDriver(FdoExt->Ldo, Irp);
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}
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_Dispatch_type_(IRP_MJ_PNP)
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static CODE_SEG("PAGE") DRIVER_DISPATCH_PAGED IsaStubPnp;
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static
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CODE_SEG("PAGE")
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NTSTATUS
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NTAPI
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IsaStubPnp(
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_In_ PDEVICE_OBJECT DeviceObject,
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_Inout_ PIRP Irp)
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{
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PISAPNP_FDO_EXTENSION FdoExt = DeviceObject->DeviceExtension;
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PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
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NTSTATUS Status;
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PAGED_CODE();
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DPRINT("%s(%p, %p) Minor - %X\n",
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__FUNCTION__,
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FdoExt,
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Irp,
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IrpSp->MinorFunction);
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switch (IrpSp->MinorFunction)
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{
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case IRP_MN_START_DEVICE:
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{
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if (IoForwardIrpSynchronously(FdoExt->Ldo, Irp))
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Status = Irp->IoStatus.Status;
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else
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Status = STATUS_UNSUCCESSFUL;
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goto CompleteIrp;
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}
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case IRP_MN_QUERY_DEVICE_RELATIONS:
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{
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PDEVICE_RELATIONS DeviceRelations;
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if (IrpSp->Parameters.QueryDeviceRelations.Type != BusRelations)
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break;
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DeviceRelations = ExAllocatePoolWithTag(PagedPool,
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FIELD_OFFSET(DEVICE_RELATIONS, Objects),
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TAG_ISAPNP);
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if (!DeviceRelations)
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{
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Status = STATUS_NO_MEMORY;
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goto CompleteIrp;
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}
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DeviceRelations->Count = 0;
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Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
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Irp->IoStatus.Status = STATUS_SUCCESS;
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break;
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}
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case IRP_MN_REMOVE_DEVICE:
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{
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoSkipCurrentIrpStackLocation(Irp);
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Status = IoCallDriver(FdoExt->Ldo, Irp);
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IoDetachDevice(FdoExt->Ldo);
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IoDeleteDevice(FdoExt->Common.Self);
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return Status;
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}
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case IRP_MN_QUERY_PNP_DEVICE_STATE:
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{
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Irp->IoStatus.Information |= PNP_DEVICE_NOT_DISABLEABLE;
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Irp->IoStatus.Status = STATUS_SUCCESS;
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break;
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}
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case IRP_MN_QUERY_INTERFACE:
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{
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Status = IsaFdoQueryInterface(FdoExt, IrpSp);
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if (Status == STATUS_NOT_SUPPORTED)
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{
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break;
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}
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else if (!NT_SUCCESS(Status))
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{
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goto CompleteIrp;
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}
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Irp->IoStatus.Status = Status;
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break;
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}
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case IRP_MN_QUERY_REMOVE_DEVICE:
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case IRP_MN_CANCEL_REMOVE_DEVICE:
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case IRP_MN_QUERY_STOP_DEVICE:
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case IRP_MN_CANCEL_STOP_DEVICE:
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case IRP_MN_STOP_DEVICE:
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case IRP_MN_SURPRISE_REMOVAL:
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{
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Irp->IoStatus.Status = STATUS_SUCCESS;
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break;
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}
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default:
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break;
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}
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IoSkipCurrentIrpStackLocation(Irp);
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return IoCallDriver(FdoExt->Ldo, Irp);
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CompleteIrp:
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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_Dispatch_type_(IRP_MJ_POWER)
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static DRIVER_DISPATCH_RAISED IsaStubPower;
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static
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NTSTATUS
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NTAPI
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IsaStubPower(
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_In_ PDEVICE_OBJECT DeviceObject,
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_Inout_ PIRP Irp)
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{
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PISAPNP_FDO_EXTENSION FdoExt = DeviceObject->DeviceExtension;
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PoStartNextPowerIrp(Irp);
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IoSkipCurrentIrpStackLocation(Irp);
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return PoCallDriver(FdoExt->Ldo, Irp);
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}
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static CODE_SEG("PAGE") DRIVER_ADD_DEVICE IsaStubAddDevice;
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static
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CODE_SEG("PAGE")
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NTSTATUS
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NTAPI
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IsaStubAddDevice(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PDEVICE_OBJECT PhysicalDeviceObject)
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{
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PDEVICE_OBJECT Fdo;
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PISAPNP_FDO_EXTENSION FdoExt;
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NTSTATUS Status;
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PAGED_CODE();
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DPRINT("%s(%p, %p)\n", __FUNCTION__, DriverObject, PhysicalDeviceObject);
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Status = IoCreateDevice(DriverObject,
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sizeof(ISAPNP_FDO_EXTENSION),
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NULL,
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FILE_DEVICE_BUS_EXTENDER,
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FILE_DEVICE_SECURE_OPEN,
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FALSE,
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&Fdo);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Failed to create FDO (0x%08lx)\n", Status);
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return Status;
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}
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FdoExt = Fdo->DeviceExtension;
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RtlZeroMemory(FdoExt, sizeof(ISAPNP_FDO_EXTENSION));
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FdoExt->Common.Self = Fdo;
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FdoExt->Common.Signature = IsaPnpBus;
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FdoExt->DriverObject = DriverObject;
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FdoExt->Pdo = PhysicalDeviceObject;
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FdoExt->Ldo = IoAttachDeviceToDeviceStack(Fdo, PhysicalDeviceObject);
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if (!FdoExt->Ldo)
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{
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IoDeleteDevice(Fdo);
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return STATUS_DEVICE_REMOVED;
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}
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Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
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return STATUS_SUCCESS;
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}
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static CODE_SEG("PAGE") DRIVER_UNLOAD IsaStubUnload;
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static
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CODE_SEG("PAGE")
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VOID
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NTAPI
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IsaStubUnload(
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_In_ PDRIVER_OBJECT DriverObject)
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{
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UNREFERENCED_PARAMETER(DriverObject);
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PAGED_CODE();
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NOTHING;
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}
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CODE_SEG("INIT")
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NTSTATUS
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NTAPI
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DriverEntry(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PUNICODE_STRING RegistryPath)
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{
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DPRINT("%s(%p, %wZ)\n", __FUNCTION__, DriverObject, RegistryPath);
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DriverObject->MajorFunction[IRP_MJ_CREATE] = IsaStubCreateClose;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = IsaStubCreateClose;
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = IsaStubForward;
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DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = IsaStubForward;
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DriverObject->MajorFunction[IRP_MJ_PNP] = IsaStubPnp;
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DriverObject->MajorFunction[IRP_MJ_POWER] = IsaStubPower;
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DriverObject->DriverExtension->AddDevice = IsaStubAddDevice;
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DriverObject->DriverUnload = IsaStubUnload;
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return STATUS_SUCCESS;
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}
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@ -100,6 +100,9 @@ endif()
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cmake_dependent_option(BUILD_MP "Whether to build the multiprocessor versions of NTOSKRNL and HAL." ON
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"ARCH STREQUAL i386" OFF)
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cmake_dependent_option(ISAPNP_ENABLE "Whether to enable the ISA PnP support." ON
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"ARCH STREQUAL i386 AND NOT SARCH STREQUAL xbox" OFF)
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set(GENERATE_DEPENDENCY_GRAPH FALSE CACHE BOOL
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"Whether to create a GraphML dependency graph of DLLs.")
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