1 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index a6329a0a8ec4..c60e7b86192c 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -31,6 +31,7 @@
 
 #include <mach/udc.h>
 #include <mach/hardware.h>
+#include <mach/io.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
@@ -517,3 +518,35 @@ void ixp4xx_restart(char mode, const char *cmd)
                 *IXP4XX_OSWE = IXP4XX_WDT_RESET_ENABLE | IXP4XX_WDT_COUNT_ENABLE;
         }
 }
+
+#ifdef CONFIG_IXP4XX_INDIRECT_PCI
+/*
+ * In the case of using indirect PCI, we simply return the actual PCI
+ * address and our read/write implementation use that to drive the
+ * access registers. If something outside of PCI is ioremap'd, we
+ * fallback to the default.
+ */
+
+static void __iomem *ixp4xx_ioremap_caller(unsigned long addr, size_t size,
+                                           unsigned int mtype, void *caller)
+{
+        if (!is_pci_memory(addr))
+                return __arm_ioremap_caller(addr, size, mtype, caller);
+
+        return (void __iomem *)addr;
+}
+
+static void ixp4xx_iounmap(void __iomem *addr)
+{
+        if (!is_pci_memory((__force u32)addr))
+                __iounmap(addr);
+}
+
+void __init ixp4xx_init_early(void)
+{
+        arch_ioremap_caller = ixp4xx_ioremap_caller;
+        arch_iounmap = ixp4xx_iounmap;
+}
+#else
+void __init ixp4xx_init_early(void) {}
+#endif