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From: Don Burn on 28 Dec 2005 13:11
StartDevice is just a common name for the code to handle IRP_MN_START_DEVICE
which is a sub-code of IRP_MJ_PNP. It can have anyname you want or be part
of a more general routine handling IRP_MJ_PNP. Look for IRP_MN_START_DEVICE
in samples and you will get the gist of it.


--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
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"krby_xtrm" <kerby.martino(a)gmail.com> wrote in message
news:1135791066.365035.193170(a)g47g2000cwa.googlegroups.com...
>i see.
> but how does a StartDevice() is called?coz i cant find in many driver
> samples that the routine is assigned or called?
>
> -krby_xtrm-
>


From: Ali on 28 Dec 2005 13:32
Isn't StartDevice wdm version of CreateDispatch or DisatchIO? in good
nt days without IRP_MJ_PNP.

From: Don Burn on 28 Dec 2005 13:36
You are thinking of StartIo something totally different, and only used by
slow devices.


--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
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"Ali" <abdulrazaq(a)gmail.com> wrote in message
news:1135794771.114669.113930(a)g43g2000cwa.googlegroups.com...
> Isn't StartDevice wdm version of CreateDispatch or DisatchIO? in good
> nt days without IRP_MJ_PNP.
>


From: krby_xtrm on 29 Dec 2005 00:42
Yes. I think I know that, I have minor function IRP_MN_START_DEVICE in
my Pnp Dispatch routine.

NTSTATUS PciWDMPnp (IN PDEVICE_OBJECT fdo, IN PIRP Irp)
{
....
ULONG MinorFunction = IrpStack->MinorFunction;
....
switch(MinorFunction)
{
case IRP_MN_START_DEVICE:
// we should check the allocated resource...
KdPrint((DRIVERNAME " - IRP_MN_START_DEVICE"));
//
break;
case IRP_MN_REMOVE_DEVICE:
KdPrint((DRIVERNAME " - IRP_MN_REMOVE_DEVICE"));
if(pdx->LowerDeviceObject)
IoDetachDevice(pdx->LowerDeviceObject);
IoDeleteDevice(fdo); // delete fdo
break;
}
....
}

and my start device:

NTSTATUS StartDevice(PDEVICE_OBJECT fdo, PCM_PARTIAL_RESOURCE_LIST raw,
PCM_PARTIAL_RESOURCE_LIST translated)
{
....
PHYSICAL_ADDRESS portbase;// base address of range
BOOLEAN gotport = FALSE;

PCM_PARTIAL_RESOURCE_DESCRIPTOR resource =
translated->PartialDescriptors;
ULONG nres = translated->Count;

for (ULONG i = 0; i < nres; ++i, ++resource)
{ // for each resource
switch (resource->Type)
{ // switch on resource type
case CmResourceTypePort:
portbase = resource->u.Port.Start;
pdx->nports = resource->u.Port.Length;
pdx->mappedport = (resource->Flags & CM_RESOURCE_PORT_IO) == 0;
gotport = TRUE;
break;
default:
KdPrint((DRIVERNAME " - Unexpected I/O resource type %d\n",
resource->Type));
break;
}
}
.....
}

From: Pavel A. on 29 Dec 2005 09:46
Well it's your driver, you decide how to call your internal function from
PciWDMPnp.
Or just copy what the DDK samples do. To look up function
names in the sources - From Visual Studio:
Edit -> Find and replace -> Find in files

--PA

"krby_xtrm" wrote:
> Yes. I think I know that, I have minor function IRP_MN_START_DEVICE in
> my Pnp Dispatch routine.
>
> NTSTATUS PciWDMPnp (IN PDEVICE_OBJECT fdo, IN PIRP Irp)
> {
> ....
> ULONG MinorFunction = IrpStack->MinorFunction;
> ....
> switch(MinorFunction)
> {
> case IRP_MN_START_DEVICE:
> // we should check the allocated resource...
> KdPrint((DRIVERNAME " - IRP_MN_START_DEVICE"));
> //
> break;
> case IRP_MN_REMOVE_DEVICE:
> KdPrint((DRIVERNAME " - IRP_MN_REMOVE_DEVICE"));
> if(pdx->LowerDeviceObject)
> IoDetachDevice(pdx->LowerDeviceObject);
> IoDeleteDevice(fdo); // delete fdo
> break;
> }
> ....
> }
>
> and my start device:
>
> NTSTATUS StartDevice(PDEVICE_OBJECT fdo, PCM_PARTIAL_RESOURCE_LIST raw,
> PCM_PARTIAL_RESOURCE_LIST translated)
> {
> ....
> PHYSICAL_ADDRESS portbase;// base address of range
> BOOLEAN gotport = FALSE;
>
> PCM_PARTIAL_RESOURCE_DESCRIPTOR resource =
> translated->PartialDescriptors;
> ULONG nres = translated->Count;
>
> for (ULONG i = 0; i < nres; ++i, ++resource)
> { // for each resource
> switch (resource->Type)
> { // switch on resource type
> case CmResourceTypePort:
> portbase = resource->u.Port.Start;
> pdx->nports = resource->u.Port.Length;
> pdx->mappedport = (resource->Flags & CM_RESOURCE_PORT_IO) == 0;
> gotport = TRUE;
> break;
> default:
> KdPrint((DRIVERNAME " - Unexpected I/O resource type %d\n",
> resource->Type));
> break;
> }
> }
> .....
> }
>
>
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