target/linux/rb532/patches-2.6.28/002-pci_io_map_base.patch

   1 The code is rather based on trial-and-error than knowledge. Verified Via
   2 Rhine functionality in PIO as well as MMIO mode.
   3
   4 Signed-off-by: Phil Sutter <n0-1@freewrt.org>
   5 Tested-by: Florian Fainelli <florian@openwrt.org>
   6 ---
   7  arch/mips/pci/pci-rc32434.c |   11 +++++++++++
   8  1 files changed, 11 insertions(+), 0 deletions(-)
   9
  10 --- a/arch/mips/pci/pci-rc32434.c
  11 +++ b/arch/mips/pci/pci-rc32434.c
  12 @@ -205,6 +205,8 @@ static int __init rc32434_pcibridge_init
  13
  14  static int __init rc32434_pci_init(void)
  15  {
  16 +       void __iomem *io_map_base;
  17 +
  18         pr_info("PCI: Initializing PCI\n");
  19
  20         ioport_resource.start = rc32434_res_pci_io1.start;
  21 @@ -212,6 +214,15 @@ static int __init rc32434_pci_init(void)
  22
  23         rc32434_pcibridge_init();
  24
  25 +       io_map_base = ioremap(rc32434_res_pci_io1.start,
  26 +               rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1);
  27 +
  28 +       if (!io_map_base)
  29 +               return -ENOMEM;
  30 +
  31 +       rc32434_controller.io_map_base =
  32 +               (unsigned long)io_map_base - rc32434_res_pci_io1.start;
  33 +
  34         register_pci_controller(&rc32434_controller);
  35         rc32434_sync();
  36