Messages in this thread | | | From | Kumar Gala <> | Subject | proper way to assign fixed PCI resources to a "hotplug" device | Date | Fri, 3 Mar 2006 11:42:03 -0600 |
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I was wondering what the proper way to assign and setup a single PCI device that comes into existence after the system has booted. I have an FPGA that we load from user space at which time it shows up on the PCI bus.
It has a single BAR and I need to assign it at a fixed address in PCI MMIO space.
All of the exported interfaces I see have to do with having the kernel assign the BAR automatically for me.
the following looks like what I want to do:
bus = pci_find_bus(0, 3); dev = pci_scan_single_device(bus, devfn); pci_bus_alloc_resource(...); pci_update_resource(dev, dev->resource[0], 0); pci_bus_add_devices(bus);
However, pci_update_resource() is not an exported symbol, so I could replace that code with the need updates to the actual BAR.
Is this the "right" way to go about this or is there a better mechanism to do this.
thanks
- kumar
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