Hi, I am working on a driver for a device using a PCI interface on some embedded hardware. Our hardware is no x86 and thus we have no BIOS to setup the PCI config registers (let's take BAR0 for instance). On our devboard, these registers are configured though values contained in a serial EEPROM that is read by the device at power-up. Now I would like to be able to modify some of these registers so that I can map other physical memory regions than the ones setup by the EEPROM. When I perform these writes (with pci_write_config_xxx), the physical registers in the PCI config space is updated (at least I read the corresponding values with pci_read_config_xxx). However, the value returned by the call to pci_resource_start for the corresponding BAR is not updated and still is the initial value written from the EEPROM. I guess that this is due to the fact that the value read by pci_resource_start is only read in hardware once, at device enumaration/discovery on the bus. How can my driver write new values so that they are the ones actually used by the kernel pci code ? Or how can I trigger a "refresh" of all these values in the corresponding structs for a given device ? Thank you for your help Valentin Longchamp -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
