[IA64] pcibus_to_node implementation for IA64

pcibus_to_node provides a way for the Linux kernel to identify to which
node a certain pcibus connects to. Allocations of control structures
for devices can then be made on the node where the pci bus is located
to allow local access during interrupt and other device manipulation.

This patch provides a new "node" field in the the pci_controller
structure. The node field will be set based on ACPI information (thanks
to Alex Williamson  <alex.williamson@hp.com for that piece).

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-ia64/pci.h b/include/asm-ia64/pci.h
index 0c4c5d801d3f..8b7237cc84c1 100644
--- a/include/asm-ia64/pci.h
+++ b/include/asm-ia64/pci.h
@@ -128,6 +128,7 @@ struct pci_controller {
         void *acpi_handle;
         void *iommu;
         int segment;
+        int node;               /* nearest node with memory or -1 for global allocation */
 
         unsigned int windows;
         struct pci_window *window;