[ARM] 4341/1: iop13xx: fix i/o address translation

PCI devices were being programmed with an incorrect base address value.
This patch moves I/O space into a 16-bit addressable region and corrects
the i/o offset.

Much thanks to Martin Michlmayr for tracking this issue and testing
debug patches.

Cc: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 89ec70ea3187..d907a2aadfe6 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -1023,7 +1023,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
                                   << IOP13XX_ATUX_PCIXSR_FUNC_NUM;
                 __raw_writel(pcixsr, IOP13XX_ATUX_PCIXSR);
 
-                res[0].start = IOP13XX_PCIX_LOWER_IO_PA;
+                res[0].start = IOP13XX_PCIX_LOWER_IO_PA + IOP13XX_PCIX_IO_BUS_OFFSET;
                 res[0].end   = IOP13XX_PCIX_UPPER_IO_PA;
                 res[0].name  = "IQ81340 ATUX PCI I/O Space";
                 res[0].flags = IORESOURCE_IO;
@@ -1033,7 +1033,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
                 res[1].name  = "IQ81340 ATUX PCI Memory Space";
                 res[1].flags = IORESOURCE_MEM;
                 sys->mem_offset = IOP13XX_PCIX_MEM_OFFSET;
-                sys->io_offset = IOP13XX_PCIX_IO_OFFSET;
+                sys->io_offset = IOP13XX_PCIX_LOWER_IO_PA;
                 break;
         case IOP13XX_INIT_ATU_ATUE:
                 /* Note: the function number field in the PCSR is ro */
@@ -1044,7 +1044,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
 
                 __raw_writel(pcsr, IOP13XX_ATUE_PCSR);
 
-                res[0].start = IOP13XX_PCIE_LOWER_IO_PA;
+                res[0].start = IOP13XX_PCIE_LOWER_IO_PA + IOP13XX_PCIE_IO_BUS_OFFSET;
                 res[0].end   = IOP13XX_PCIE_UPPER_IO_PA;
                 res[0].name  = "IQ81340 ATUE PCI I/O Space";
                 res[0].flags = IORESOURCE_IO;
@@ -1054,7 +1054,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
                 res[1].name  = "IQ81340 ATUE PCI Memory Space";
                 res[1].flags = IORESOURCE_MEM;
                 sys->mem_offset = IOP13XX_PCIE_MEM_OFFSET;
-                sys->io_offset = IOP13XX_PCIE_IO_OFFSET;
+                sys->io_offset = IOP13XX_PCIE_LOWER_IO_PA;
                 sys->map_irq = iop13xx_pcie_map_irq;
                 break;
         default: