diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/common.c')
| -rw-r--r-- | arch/arm/mach-ixp4xx/common.c | 33 |
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 |