PCMCIA Filter driver.

NTDEV
1

I am new to Win2k device drivers and have a couple of questions that I hope
someone could help with.

Has anyone successfully written an Upper BUS filter for PCMCIA? I have been
trying to implement one but have found that I get a bugcheck in pcmcia.sys
whenever it gets a PnP IRP which has a minor function code of
IRP_MN_FILTER_RESOURCE_REQUIREMENTS. I have traced the bugcheck to
pcmcia.sys trying to Complete an the IRP after the IRP has been completed by
PCI.sys.

Also, I have two identical CARDBUS controllers and would like to filter on
just the second one but if I move the UpperFilters Value down to the device
level the filter driver does not get loaded. Is there a way to filter on
just one of the devices?

Jim

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2

Jim:

Check out this lists archives. I haven’t seen anything on an upper
filter specifically, but there are a few good PCMCIA tidbits and perhaps
you can find some bits on upper filter drivers.

With regards to the driver that filter’s just one slot: When you search
the archives, you will see that we have all been wondering how to
identify which slot a given card is in (presumably you want to know this
when you decide which card to work with). This seems to be quite a
challenge. Please post what you find.

Thomas McCormick
Centennial Technologies
e-mail: xxxxx@cent-tech.com

-----Original Message-----
From: xxxxx@Itronix.com [mailto:xxxxx@Itronix.com]
Sent: Friday, February 02, 2001 4:57 PM
To: NT Developers Interest List
Subject: [ntdev] PCMCIA Filter driver.

I am new to Win2k device drivers and have a couple of
questions that I hope
someone could help with.

Has anyone successfully written an Upper BUS filter for
PCMCIA? I have been
trying to implement one but have found that I get a
bugcheck in pcmcia.sys
whenever it gets a PnP IRP which has a minor function
code of
IRP_MN_FILTER_RESOURCE_REQUIREMENTS. I have traced the
bugcheck to
pcmcia.sys trying to Complete an the IRP after the IRP
has been completed by
PCI.sys.

Also, I have two identical CARDBUS controllers and would
like to filter on
just the second one but if I move the UpperFilters Value
down to the device
level the filter driver does not get loaded. Is there a
way to filter on
just one of the devices?

Jim

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3

Perhaps you need to set a completion notification callback. You might also
look at the use of STATUS_More_PROCESSING_REQUIRED.

Gary G. Little
Sr. Staff Engineer
Broadband Storage, LLC
xxxxx@broadstor.com
xxxxx@delphieng.com

-----Original Message-----
From: xxxxx@Itronix.com [mailto:xxxxx@Itronix.com]
Sent: Friday, February 02, 2001 1:57 PM
To: NT Developers Interest List
Subject: [ntdev] PCMCIA Filter driver.

I am new to Win2k device drivers and have a couple of questions that I hope
someone could help with.

Has anyone successfully written an Upper BUS filter for PCMCIA? I have been
trying to implement one but have found that I get a bugcheck in pcmcia.sys
whenever it gets a PnP IRP which has a minor function code of
IRP_MN_FILTER_RESOURCE_REQUIREMENTS. I have traced the bugcheck to
pcmcia.sys trying to Complete an the IRP after the IRP has been completed by
PCI.sys.

Also, I have two identical CARDBUS controllers and would like to filter on
just the second one but if I move the UpperFilters Value down to the device
level the filter driver does not get loaded. Is there a way to filter on
just one of the devices?

Jim

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