[janderwald] 50035: [AUDIO-BRINGUP] - Fix several bugs in SwDispatchPnp routine - Routine did not complete requests, when KsServiceBusEnumPnpRequest successfully handled the request - Software bus ...

Author: janderwald
Date: Thu Dec 16 11:10:45 2010
New Revision: 50035

URL: http://svn.reactos.org/svn/reactos?rev=50035&view=rev
Log:
[AUDIO-BRINGUP]
- Fix several bugs in SwDispatchPnp routine
- Routine did not complete requests, when KsServiceBusEnumPnpRequest successfully handled
the request
- Software bus driver did not handle resource lists irps
- Software bus driver did not support querying pnp device state
- Software bus driver leaked the irp for IOCTL_SWENUM_GET_BUS_ID requests in
SwDispatchDeviceControl
- Software bus driver is now successfully initializes in XP and audio devices are present

Modified:
    branches/audio-bringup/drivers/ksfilter/swenum/swenum.c

Modified: branches/audio-bringup/drivers/ksfilter/swenum/swenum.c
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/swenum/swenum.c [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/swenum/swenum.c [iso-8859-1] Thu Dec 16
11:10:45 2010
@@ -43,6 +43,9 @@
     PIO_STACK_LOCATION IoStack;
     PDEVICE_OBJECT PnpDeviceObject = NULL;
 
+    /* get current stack location */
+    IoStack = IoGetCurrentIrpStackLocation(Irp);
+
     /* check if the device object is a child device */
     Status = KsIsBusEnumChildDevice(DeviceObject, &ChildDevice);
 
@@ -55,10 +58,30 @@
         return Status;
     }
 
+    DPRINT1("SwDispatchPnp ChildDevice %u Request %x\n", ChildDevice,
IoStack->MinorFunction);
+
     /* let ks handle it */
     Status = KsServiceBusEnumPnpRequest(DeviceObject, Irp);
 
-    if (!NT_SUCCESS(Status))
+    /* check if the request was for a pdo */
+    if (!ChildDevice)
+    {
+        if (Status != STATUS_NOT_SUPPORTED)
+        {
+            /* store result */
+            Irp->IoStatus.Status = Status;
+        }
+
+        /* complete request */
+        IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+        /* done */
+        return Status;
+    }
+
+    DPRINT1("SwDispatchPnp KsServiceBusEnumPnpRequest Status %x\n", Status);
+
+    if (NT_SUCCESS(Status))
     {
         /* invalid request or not supported */
         Irp->IoStatus.Status = Status;
@@ -69,6 +92,8 @@
     /* get bus enum pnp object */
     Status = KsGetBusEnumPnpDeviceObject(DeviceObject, &PnpDeviceObject);
 
+    DPRINT1("SwDispatchPnp KsGetBusEnumPnpDeviceObject Status %x\n", Status);
+
     /* check for success */
     if (!NT_SUCCESS(Status))
     {
@@ -89,11 +114,49 @@
         /* delete the device */
         IoDeleteDevice(DeviceObject);
     }
-
-    /* skip current location */
-    IoSkipCurrentIrpStackLocation(Irp);
-    /* call the pnp device object */
-    return IoCallDriver(PnpDeviceObject, Irp);
+    else
+    {
+        if (IoStack->MinorFunction == IRP_MN_QUERY_RESOURCES ||
IoStack->MinorFunction == IRP_MN_QUERY_RESOURCE_REQUIREMENTS)
+        {
+            /* no resources required */
+            Irp->IoStatus.Information = 0;
+            Irp->IoStatus.Status = STATUS_SUCCESS;
+
+            /* skip current location */
+            IoSkipCurrentIrpStackLocation(Irp);
+
+            /* call the pnp device object */
+            return IoCallDriver(PnpDeviceObject, Irp);
+        }
+
+        if (IoStack->MajorFunction == IRP_MN_QUERY_PNP_DEVICE_STATE)
+        {
+            /* device cannot be disabled */
+            Irp->IoStatus.Information |= PNP_DEVICE_NOT_DISABLEABLE;
+            Irp->IoStatus.Status = STATUS_SUCCESS;
+
+            /* skip current location */
+            IoSkipCurrentIrpStackLocation(Irp);
+
+            /* call the pnp device object */
+            return IoCallDriver(PnpDeviceObject, Irp);
+        }
+
+        if (Status == STATUS_NOT_SUPPORTED)
+        {
+            /* skip current location */
+            IoSkipCurrentIrpStackLocation(Irp);
+
+            /* call the pnp device object */
+            return IoCallDriver(PnpDeviceObject, Irp);
+        }
+    }
+
+    /* complete the request */
+    Irp->IoStatus.Status = Status;
+    IoCompleteRequest(Irp, IO_NO_INCREMENT);
+
+    return Status;
 }
 
 NTSTATUS
@@ -149,7 +212,7 @@
     IN PIRP Irp)
 {
     PIO_STACK_LOCATION IoStack;
-    NTSTATUS Status = STATUS_SUCCESS;
+    NTSTATUS Status;
 
     /* get current stack location */
     IoStack = IoGetCurrentIrpStackLocation(Irp);
@@ -158,16 +221,25 @@
     {
         /* install interface */
         Status = KsInstallBusEnumInterface(Irp);
+        DPRINT1("SwDispatchDeviceControl IOCTL_SWENUM_INSTALL_INTERFACE %x\n",
Status);
     }
     else if (IoStack->Parameters.DeviceIoControl.IoControlCode ==
IOCTL_SWENUM_REMOVE_INTERFACE)
     {
         /* remove interface */
         Status = KsRemoveBusEnumInterface(Irp);
+        DPRINT1("SwDispatchDeviceControl IOCTL_SWENUM_REMOVE_INTERFACE %x\n",
Status);
+
     }
     else if (IoStack->Parameters.DeviceIoControl.IoControlCode ==
IOCTL_SWENUM_GET_BUS_ID)
     {
         /* get bus id */
-        return KsGetBusEnumIdentifier(Irp);
+        Status = KsGetBusEnumIdentifier(Irp);
+        DPRINT1("SwDispatchDeviceControl IOCTL_SWENUM_GET_BUS_ID %x\n",
Status);
+    }
+    else
+    {
+        DPRINT1("SwDispatchDeviceControl Unknown IOCTL %x\n",
IoStack->Parameters.DeviceIoControl.IoControlCode);
+        Status = STATUS_INVALID_PARAMETER;
     }
 
     /* store result */
@@ -192,6 +264,8 @@
 
     /* check if the device object is a child device */
     Status = KsIsBusEnumChildDevice(DeviceObject, &ChildDevice);
+
+    DPRINT1("SwDispatchCreate %x\n", Status);
 
     /* check for success */
     if (NT_SUCCESS(Status))
@@ -205,6 +279,7 @@
         }
         /* perform the create request */
         Status = KsServiceBusEnumCreateRequest(DeviceObject, Irp);
+        DPRINT1("SwDispatchCreate %x\n", Status);
     }
 
     /* check the irp is pending */
@@ -246,7 +321,6 @@
     PDEVICE_OBJECT FunctionalDeviceObject;
 
     DPRINT1("SWENUM AddDevice\n");
-    DbgBreakPoint();
 
     /* create the device */
     Status = IoCreateDevice(DriverObject, sizeof(KSDEVICE_HEADER), NULL,
FILE_DEVICE_BUS_EXTENDER, 0, FALSE, &FunctionalDeviceObject);
@@ -307,7 +381,6 @@
     DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = SwDispatchSystemControl;
 
     DPRINT1("SWENUM loaded\n");
-    DbgBreakPoint();
     return STATUS_SUCCESS;
 }