Hi, On Wed, Feb 23, 2011 at 2:12 PM, Adhyas Avasthi <adhyas@xxxxxxxxx> wrote: > 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@xxxxxxxxx> wrote: >> Hi, >> >> On Wed, Feb 23, 2011 at 12:10 PM, Adhyas Avasthi <adhyas@xxxxxxxxx> 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. >>> Â Â â ANSI C Standard, 3.1.2.6. >>> ******************************************************************** >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies@xxxxxxxxxxxxxxxxx >>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >>> >>> >> >> 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. > Â Â â ANSI C Standard, 3.1.2.6. > ******************************************************************** > i am suspecting the 'dummy_pci_tbl' values. How did you populate the device table? #define DUMMY_VENDOR_ID 0xFFF0 #define DUMMY_DEVICE_ID 0x8748 #define DUMMY_CLASS_ID 0x0880 // ?? these values are specific to PCI device which is already on your system? Finally please include MODULE_LICENSE("GPL"); to remove the taint errors. -- Regards, Murali N _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
