[RFC v3 1/5] PCI: initial commit

[Clément Léger]

> +int
> +pci_read_config_byte(struct pci_dev *dev, u8 where, u8 *val)
> +{
> +	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
> +}
> +
> +int
> +pci_read_config_word(struct pci_dev *dev, u8 where, u16 *val)
> +{
> +	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
> +}
> +
> +int
> +pci_read_config_dword(struct pci_dev *dev, u8 where, u32 *val)
> +{
> +	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
> +}
> +
> +int
> +pci_write_config_byte(struct pci_dev *dev, u8 where, u8 val)
> +{
> +	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
> +}
> +
> +int
> +pci_write_config_word(struct pci_dev *dev, u8 where, u16 val)
> +{
> +	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
> +}
> +
> +int
> +pci_write_config_dword(struct pci_dev *dev, u8 where, u32 val)
> +{
> +	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
> +}
>
I would suggest replacing the "u8 where" (in pci_read/write_config and 
others) by "int where" to allow future access to PCIe extended 
configuration space (up to offset 0x1000).