[POWERPC] fix iSeries PCI resource management

The way iSeries manages PCI IO and Memory resources is a bit strange
and is based on overriding the content of those resources with home
cooked ones afterward.

This changes it a bit to better integrate with the new resource handling
so that the "virtual" tokens that iSeries replaces resources with are
done from the proper per-device fixup hook, and bridge resources are
set to enclose that token space.  This fixes various things such as
the output of /proc/iomem & ioports, among others.  This also fixes up
various boot messages as well.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 16 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 794359d8686..2ec040b314d 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -359,7 +359,7 @@ void __devinit scan_phb(struct pci_controller *hose)
         int i, mode;
         struct resource *res;
 
-        DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
+        DBG("PCI: Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
 
         /* Create an empty bus for the toplevel */
         bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, node);
@@ -375,9 +375,22 @@ void __devinit scan_phb(struct pci_controller *hose)
         pcibios_map_io_space(bus);
 
         /* Wire up PHB bus resources */
-        bus->resource[0] = res = &hose->io_resource;
-        for (i = 0; i < 3; ++i)
+        if (hose->io_resource.flags) {
+                DBG("PCI: PHB IO resource    = %016lx-%016lx [%lx]\n",
+                    hose->io_resource.start, hose->io_resource.end,
+                    hose->io_resource.flags);
+                bus->resource[0] = res = &hose->io_resource;
+        }
+        for (i = 0; i < 3; ++i) {
+                DBG("PCI: PHB MEM resource %d = %016lx-%016lx [%lx]\n", i,
+                    hose->mem_resources[i].start,
+                    hose->mem_resources[i].end,
+                    hose->mem_resources[i].flags);
                 bus->resource[i+1] = &hose->mem_resources[i];
+        }
+        DBG("PCI: PHB MEM offset     = %016lx\n", hose->pci_mem_offset);
+        DBG("PCI: PHB IO  offset     = %08lx\n",
+            (unsigned long)hose->io_base_virt - _IO_BASE);
 
         /* Get probe mode and perform scan */
         mode = PCI_PROBE_NORMAL;