Re: PCI DEVICE DRIVERS

NTDEV
1

Hai Arun,

If u want to read the configuration space of your device from your device driver, the simplest way is to use IRP_MN_READ_CONFIG. The 98 DDK and 2K ddk contains the documentation about this. If u are using windows 98 or 2000, I am sure this will help u.
bye,
regards,
prasanth

------------- Original Message --------------
Arun Kumar wrote:
To:xxxxx@rediffmail.com
From:Arun Kumar
Date:Fri, 6 Apr 2001 04:02:42 -0700 (PDT)
Subject: PCI DEVICE DRIVERS

hai,

i just saw your question in www.ntdev.org,

even i have the same problem,
i am writing a driver for a pci device driver ,
i have to read the configuration space,
now you would have known to read the configuration
space,
please help me out.

arun


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2

hai,

thanks for replying,

i am using the minor function as described but the
value what i read is getting cccccccc ,so what could
be the problem,

even in my pci card we are using 4 BAR regs and all
memory mapped so, how could i configure the
startdevice function ,so that the baseaddress of all
the BARs can be got.
if any one has examples of wdm pci drivers , please
mail me.

arun

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3

> even in my pci card we are using 4 BAR regs and all

memory mapped so, how could i configure the
startdevice function ,so that the baseaddress of all
the BARs can be got.
if any one has examples of wdm pci drivers , please
mail me.

Use AllocatedResourcesTranslated from the START IRP, and call MmMapIoSpace
on them.

Max

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4

I see this when I compile in debug mode and forget to initialize a structure
after allocating it.

Greg

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com]On Behalf Of Arun Kumar
Sent: Wednesday, April 11, 2001 2:44 AM
To: NT Developers Interest List
Subject: [ntdev] Re: PCI DEVICE DRIVERS

hai,

thanks for replying,

i am using the minor function as described but the
value what i read is getting cccccccc ,so what could
be the problem,

even in my pci card we are using 4 BAR regs and all
memory mapped so, how could i configure the
startdevice function ,so that the baseaddress of all
the BARs can be got.
if any one has examples of wdm pci drivers , please
mail me.

arun

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