Problem with PCI Driver on Ubuntu 10.10 i386

[Adhyas Avasthi]

Hi Murali

Thanks for the response. Sorry, I should have sent dmesg output earlier.
Yes, the module is loaded in lsmod.
Here is the additional output from dmesg after I inserted the module.

- Adhyas

On Wed, Feb 23, 2011 at 11:50 AM, Murali N <nalajala.murali at gmail.com> wrote:
> Hi,
>
> On Wed, Feb 23, 2011 at 12:10 PM, Adhyas Avasthi <adhyas at gmail.com> wrote:
>> I am trying to develop a very basic PCI device driver for a dummy
>> device I have created in qemu. The device has no functionality except
>> that it sits on the PCI bus behind two bridges (bridge 0 on root bus,
>> bridge 1 only device behind bridge 0, and device behind bridge 1 as
>> the only device). It is a single function do nothing device with one
>> MMIO BAR of 0x10000 size. The BAR is initialized by the kernel at some
>> MMIO location but the device is not disabled, as there is no driver. I
>> have used one of the available vendor ids for my work.
>>
>> My driver is not loaded automatically, so I load the driver manually
>> after the boot of the VM, and then issues a rescan of the entire PCI
>> bus using "echo 1 > /sys/bus/pci/rescan", but nothing happens. The
>> probe function of my driver is never invoked, neither does the device
>> gets visible in lspci output.
>>
>> Can someone help me identify what I might be doing wrong?
>>
>> I have attached the driver code, the lspci output, the lspci -H1
>> output, the lspci -H1 -xxx -s 02:02.0 output that details the
>> registers of the device.
>>
>> --
>> Adhyas
>> ********************************************************************
>> Two types have compatible type if their types are the same.
>>     — ANSI C Standard, 3.1.2.6.
>> ********************************************************************
>>
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>>
>>
>
> Once you loaded manually, did you see any errors in dmesg while
> inserting the module?
> what is the output of 'lsmod'? is your driver present in the list?
>
> Can you please post the dmesg after you loaded the module manually.
>
> --
> Regards,
> Murali N
>



-- 
Adhyas
********************************************************************
Two types have compatible type if their types are the same.
    — ANSI C Standard, 3.1.2.6.
********************************************************************
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