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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 04-28-2009, 07:36 AM   #1
Mahmoud_eltahawy
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How I can test my PCI driver code with hardware?


ear All,

I am new for PCI driver development, I write a simple PCI driver and I need to test it, I need to do simple read/write/ioctl operations, but I have no hardware(PCI development board) for doing this, I tried to use any of the PCI cards connected to my PC, I understand that ,to invoke the Driver probe method, the VENDOR_ID and DEVICE_ID of my driver should match one of the IDs of the cards connected to PC, so I used the lspci utility to list all vendor and device IDs . and I used one of these IDs in my code to make the kernel invoke my driver probe method,
inside the probe, I tried to get the address of BAR0 and BAR1 using pci_resource_start to allocate my data structure in BAR0 of the PCI, but It fails and returns NULL from pci_resource_start.


My question:
-Does anyone know how I could fix this problem ??
-What is the suitable PCI card connected to PC should I use to test my driver?


Appreciate your help

Thanks
Regards
Mahmoud
 
Old 05-04-2009, 04:37 PM   #2
Mara
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You don't allocate using pci_resource_start. It's a simple macro that returns you a value from a table in struct pci_dev. I think you should compare you driver with one of the simple ones. For instance, if you have a PCI sound card, it may be a good thing to test your driver with.

Detection and such stuff should work with any card, so when you have something, it should be fine. I'd only check if the original driver is complicated. If so, search for something easier to understand.
 
  


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