On Fri, Sep 14, 2012 at 06:31:59PM +0100, Arnd Bergmann wrote: > On Friday 14 September 2012, Catalin Marinas wrote: > > (revisiting unanswered emails :)) > > > > On Wed, Aug 15, 2012 at 01:33:55AM +0100, Olof Johansson wrote: > > > On Tue, Aug 14, 2012 at 06:52:14PM +0100, Catalin Marinas wrote: > > > > +/* > > > > + * I/O port access primitives. > > > > + */ > > > > +#define IO_SPACE_LIMIT 0xffff > > > > + > > > > +/* > > > > + * We currently don't have any platform with PCI support, so just leave this > > > > + * defined to 0 until needed. > > > > + */ > > > > +#define PCI_IOBASE ((void __iomem *)0) > > > > > > You could just leave out the PCI / I/O code alltogether instead. > > > > I would leave this in as some of the first platforms to appear will have > > PCIe. At some point we'll add a fixed address where the PCI_IOBASE is > > mapped. > > > > I guess the cleanest way would be to reserve a virtual memory region right away > and document it in the file where you describe the memory layout. Then you can > fill the value in here. Yes, easy to do. Any access will fault until we add the PCI support. -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
