Distinguish between device objects

NTDEV
1

Hi All,

My WDM driver controls 2 boards(PCI and ISA) which is
having an AddDevice() routine for creating device
objects.

I would like to know a mechanism to distiguish between
the device objects that were created.what I mean is
for ex, DeviceObject1 -> created for PCI board
DeviceObject2 -> created for ISA board.

Can some body provide some inputs?

Regards,
Murthy.

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http://fifaworldcup.yahoo.com

2

Try using IoGetDeviceProperty with property type
DevicePropertyEnumeratorName in your AddDevice routine. Once you have
that information you can either:

  1. store it in your device object extension and test it ad nauseum
  2. use a c++ class based design and never have to test it again :slight_smile:

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Murthy Vinjamuri
Sent: Thursday, June 06, 2002 9:59 PM
To: NT Developers Interest List
Subject: [ntdev] Distinguish between device objects

Hi All,

My WDM driver controls 2 boards(PCI and ISA) which is
having an AddDevice() routine for creating device
objects.

I would like to know a mechanism to distiguish between
the device objects that were created.what I mean is
for ex, DeviceObject1 -> created for PCI board
DeviceObject2 -> created for ISA board.

Can some body provide some inputs?

Regards,
Murthy.

Do You Yahoo!?
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com

You are currently subscribed to ntdev as: xxxxx@hollistech.com To
unsubscribe send a blank email to %%email.unsub%%

3

You can query a bus type and bus type GUID by sending the PnP IRP down
the stack or IIRC IoGetDeviceProperty.

Max

----- Original Message -----
From: “Murthy Vinjamuri”
To: “NT Developers Interest List”
Sent: Friday, June 07, 2002 5:59 AM
Subject: [ntdev] Distinguish between device objects

> Hi All,
>
> My WDM driver controls 2 boards(PCI and ISA) which is
> having an AddDevice() routine for creating device
> objects.
>
> I would like to know a mechanism to distiguish between
> the device objects that were created.what I mean is
> for ex, DeviceObject1 -> created for PCI board
> DeviceObject2 -> created for ISA board.
>
> Can some body provide some inputs?
>
> Regards,
> Murthy.
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
>
> —
> You are currently subscribed to ntdev as: xxxxx@storagecraft.com
> To unsubscribe send a blank email to %%email.unsub%%
>

4

Hi Mark,

I am just getting ‘P’ instead of ‘PCI’ as a return
value for this function.Any inputs?

thanks.

— Mark Roddy wrote:
> Try using IoGetDeviceProperty with property type
> DevicePropertyEnumeratorName in your AddDevice
> routine. Once you have
> that information you can either:
>
> 1) store it in your device object extension and test
> it ad nauseum
> 2) use a c++ class based design and never have to
> test it again :slight_smile:
>
> > -----Original Message-----
> > From: xxxxx@lists.osr.com
> > [mailto:xxxxx@lists.osr.com] On Behalf
> Of Murthy Vinjamuri
> > Sent: Thursday, June 06, 2002 9:59 PM
> > To: NT Developers Interest List
> > Subject: [ntdev] Distinguish between device
> objects
> >
> >
> > Hi All,
> >
> > My WDM driver controls 2 boards(PCI and ISA) which
> is
> > having an AddDevice() routine for creating device
> > objects.
> >
> > I would like to know a mechanism to distiguish
> between
> > the device objects that were created.what I mean
> is
> > for ex, DeviceObject1 -> created for PCI board
> > DeviceObject2 -> created for ISA board.
> >
> > Can some body provide some inputs?
> >
> > Regards,
> > Murthy.
> >
> >
> > Do You Yahoo!?
> > Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@hollistech.com To
> unsubscribe send a blank email to %%email.unsub%%
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
%%email.unsub%%
Do You Yahoo!?
LAUNCH - Your Yahoo! Music Experience
http://launch.yahoo.com

5

>I am just getting ‘P’ instead of ‘PCI’ as a return

value for this function.Any inputs?

Sounds like Unicode “PCI” perhaps. Each character is two bytes. Unicode
buffers would need the correct size limit too.

  • Jan
6

Thanks for the reply. How do I compare once the call
made to the below function. Please let me know.

thanks.
— Mark Roddy wrote:
> Try using IoGetDeviceProperty with property type
> DevicePropertyEnumeratorName in your AddDevice
> routine. Once you have
> that information you can either:
>
> 1) store it in your device object extension and test
> it ad nauseum
> 2) use a c++ class based design and never have to
> test it again :slight_smile:
>
> > -----Original Message-----
> > From: xxxxx@lists.osr.com
> > [mailto:xxxxx@lists.osr.com] On Behalf
> Of Murthy Vinjamuri
> > Sent: Thursday, June 06, 2002 9:59 PM
> > To: NT Developers Interest List
> > Subject: [ntdev] Distinguish between device
> objects
> >
> >
> > Hi All,
> >
> > My WDM driver controls 2 boards(PCI and ISA) which
> is
> > having an AddDevice() routine for creating device
> > objects.
> >
> > I would like to know a mechanism to distiguish
> between
> > the device objects that were created.what I mean
> is
> > for ex, DeviceObject1 -> created for PCI board
> > DeviceObject2 -> created for ISA board.
> >
> > Can some body provide some inputs?
> >
> > Regards,
> > Murthy.
> >
> >
> > Do You Yahoo!?
> > Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@hollistech.com To
> unsubscribe send a blank email to %%email.unsub%%
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@yahoo.com
> To unsubscribe send a blank email to
%%email.unsub%%
Do You Yahoo!?
LAUNCH - Your Yahoo! Music Experience
http://launch.yahoo.com

7

Yeah, I suspect you are mistreating the returned value as char instead
of wchar. The enumerator of Pci devices is PCI.

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Murthy Vinjamuri
Sent: Monday, June 10, 2002 8:53 PM
To: NT Developers Interest List
Subject: [ntdev] RE: Distinguish between device objects

Hi Mark,

I am just getting ‘P’ instead of ‘PCI’ as a return
value for this function.Any inputs?

thanks.

— Mark Roddy wrote:
> > Try using IoGetDeviceProperty with property type
> > DevicePropertyEnumeratorName in your AddDevice routine.
> Once you have
> > that information you can either:
> >
> > 1) store it in your device object extension and test
> > it ad nauseum
> > 2) use a c++ class based design and never have to
> > test it again :slight_smile:
> >
> > > -----Original Message-----
> > > From: xxxxx@lists.osr.com
> > > [mailto:xxxxx@lists.osr.com] On Behalf
> > Of Murthy Vinjamuri
> > > Sent: Thursday, June 06, 2002 9:59 PM
> > > To: NT Developers Interest List
> > > Subject: [ntdev] Distinguish between device
> > objects
> > >
> > >
> > > Hi All,
> > >
> > > My WDM driver controls 2 boards(PCI and ISA) which
> > is
> > > having an AddDevice() routine for creating device
> > > objects.
> > >
> > > I would like to know a mechanism to distiguish
> > between
> > > the device objects that were created.what I mean
> > is
> > > for ex, DeviceObject1 -> created for PCI board DeviceObject2 ->
> > > created for ISA board.
> > >
> > > Can some body provide some inputs?
> > >
> > > Regards,
> > > Murthy.
> > >
> > >
> > > Do You Yahoo!?
> > > Yahoo! - Official partner of 2002 FIFA World Cup
> > http://fifaworldcup.yahoo.com
> >
> > —
> > You are currently subscribed to ntdev as: xxxxx@hollistech.com To
> > unsubscribe send a blank email to %%email.unsub%%
> >
> >
> > —
> > You are currently subscribed to ntdev as: xxxxx@yahoo.com
> > To unsubscribe send a blank email to
> %%email.unsub%%
>
>
>
> Do You Yahoo!?
> LAUNCH - Your Yahoo! Music Experience
> http://launch.yahoo.com
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@hollistech.com To unsubscribe send a blank email to
> %%email.unsub%%
>