[MIPS] Iomap implementation.

This implementation has support for the concept of one separate ioport
address space by PCI domain.  A pointer to the virtual address where
the port space of a domain has been mapped has been added to struct
pci_controller and systems should be fixed to fill in this value. For
single domain systems this will be the same value as passed to
set_io_port_base().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 5ace368657ad..697a7e48cb8d 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -79,6 +79,14 @@ void __init register_pci_controller(struct pci_controller *hose)
 {
         *hose_tail = hose;
         hose_tail = &hose->next;
+
+        /*
+         * Do not panic here but later - this might hapen before console init.
+         */
+        if (!hose->io_map_base) {
+                printk(KERN_WARNING
+                       "registering PCI controller with io_map_base unset\n");
+        }
 }
 
 /* Most MIPS systems have straight-forward swizzling needs.  */