target/linux/rb532/patches-2.6.27/002-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 diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c
  11 index 1c2821e..71f7d27 100644
  12 --- a/arch/mips/pci/pci-rc32434.c
  13 +++ b/arch/mips/pci/pci-rc32434.c
  14 @@ -205,6 +205,8 @@ static int __init rc32434_pcibridge_init(void)
  15
  16  static int __init rc32434_pci_init(void)
  17  {
  18 +       void __iomem *io_map_base;
  19 +
  20         pr_info("PCI: Initializing PCI\n");
  21
  22         ioport_resource.start = rc32434_res_pci_io1.start;
  23 @@ -212,6 +214,15 @@ static int __init rc32434_pci_init(void)
  24
  25         rc32434_pcibridge_init();
  26
  27 +       io_map_base = ioremap(rc32434_res_pci_io1.start,
  28 +               rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1);
  29 +
  30 +       if (!io_map_base)
  31 +               return -ENOMEM;
  32 +
  33 +       rc32434_controller.io_map_base =
  34 +               (unsigned long)io_map_base - rc32434_res_pci_io1.start;
  35 +
  36         register_pci_controller(&rc32434_controller);
  37         rc32434_sync();
  38
  39 --
  40 1.5.6.4
  41
  42