MIPS: RC32434: Define io_map_base for PCI controller

The code is rather based on trial-and-error than knowledge. Verified Via
Rhine functionality in PIO as well as MMIO mode.

[Looks sane -- Ralf]

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c
index 1c2821e2f494..71f7d27b0d4c 100644
--- a/arch/mips/pci/pci-rc32434.c
+++ b/arch/mips/pci/pci-rc32434.c
@@ -205,6 +205,8 @@ static int __init rc32434_pcibridge_init(void)
 
 static int __init rc32434_pci_init(void)
 {
+        void __iomem *io_map_base;
+
         pr_info("PCI: Initializing PCI\n");
 
         ioport_resource.start = rc32434_res_pci_io1.start;
@@ -212,6 +214,15 @@ static int __init rc32434_pci_init(void)
 
         rc32434_pcibridge_init();
 
+        io_map_base = ioremap(rc32434_res_pci_io1.start,
+                rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1);
+
+        if (!io_map_base)
+                return -ENOMEM;
+
+        rc32434_controller.io_map_base =
+                (unsigned long)io_map_base - rc32434_res_pci_io1.start;
+
         register_pci_controller(&rc32434_controller);
         rc32434_sync();