powerpc/pci: Add a platform hook after probe and before resource survey

Some platforms need to perform resource allocation using a custom algorithm
due to HW constraints, or may want to tweak things globally below a host
bridge. For example OPAL support for IODA will need to perform a
resource allocation pass that applies IODA specific segmentation
constraints to MMIO which cannot be done simply using the kernel generic
resource management code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index b540d6fcedd6..bf37931d1ad6 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -213,6 +213,9 @@ struct machdep_calls {
          * allow assignment/enabling of the device. */
         int  (*pcibios_enable_device_hook)(struct pci_dev *);
 
+        /* Called after scan and before resource survey */
+        void (*pcibios_fixup_phb)(struct pci_controller *hose);
+
         /* Called to shutdown machine specific hardware not already controlled
          * by other drivers.
          */