Re: [PATCH v2 13/31] arm64: Device specific operations

On Friday 14 September 2012, Catalin Marinas wrote:

(revisiting unanswered emails :))

On Wed, Aug 15, 2012 at 01:33:55AM +0100, Olof Johansson wrote:

quoted

On Tue, Aug 14, 2012 at 06:52:14PM +0100, Catalin Marinas wrote:

quoted

+/*
+ *  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.

	Arnd