diff options
| -rw-r--r-- | arch/ia64/mm/Makefile | 2 | ||||
| -rw-r--r-- | arch/ia64/mm/ioremap.c | 43 | ||||
| -rw-r--r-- | include/asm-ia64/io.h | 15 |
3 files changed, 46 insertions, 14 deletions
diff --git a/arch/ia64/mm/Makefile b/arch/ia64/mm/Makefile index d78d20f0a0f..bb0a01a8187 100644 --- a/arch/ia64/mm/Makefile +++ b/arch/ia64/mm/Makefile @@ -2,7 +2,7 @@ # Makefile for the ia64-specific parts of the memory manager. # -obj-y := init.o fault.o tlb.o extable.o +obj-y := init.o fault.o tlb.o extable.o ioremap.o obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o obj-$(CONFIG_NUMA) += numa.o diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c new file mode 100644 index 00000000000..62328621f99 --- /dev/null +++ b/arch/ia64/mm/ioremap.c @@ -0,0 +1,43 @@ +/* + * (c) Copyright 2006 Hewlett-Packard Development Company, L.P. + * Bjorn Helgaas <bjorn.helgaas@hp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/compiler.h> +#include <linux/module.h> +#include <linux/efi.h> +#include <asm/io.h> + +static inline void __iomem * +__ioremap (unsigned long offset, unsigned long size) +{ + return (void __iomem *) (__IA64_UNCACHED_OFFSET | offset); +} + +void __iomem * +ioremap (unsigned long offset, unsigned long size) +{ + if (efi_mem_attribute_range(offset, size, EFI_MEMORY_UC)) + return __ioremap(offset, size); + + if (efi_mem_attribute_range(offset, size, EFI_MEMORY_WB)) + return phys_to_virt(offset); + + /* + * Someday this should check ACPI resources so we + * can do the right thing for hot-plugged regions. + */ + return __ioremap(offset, size); +} +EXPORT_SYMBOL(ioremap); + +void __iomem * +ioremap_nocache (unsigned long offset, unsigned long size) +{ + return __ioremap(offset, size); +} +EXPORT_SYMBOL(ioremap_nocache); diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h index acba019b08e..c2e3742108b 100644 --- a/include/asm-ia64/io.h +++ b/include/asm-ia64/io.h @@ -416,25 +416,14 @@ __writeq (unsigned long val, volatile void __iomem *addr) # define outl_p outl #endif -/* - * An "address" in IO memory space is not clearly either an integer or a pointer. We will - * accept both, thus the casts. - * - * On ia-64, we access the physical I/O memory space through the uncached kernel region. - */ -static inline void __iomem * -ioremap (unsigned long offset, unsigned long size) -{ - return (void __iomem *) (__IA64_UNCACHED_OFFSET | (offset)); -} +extern void __iomem * ioremap(unsigned long offset, unsigned long size); +extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size); static inline void iounmap (volatile void __iomem *addr) { } -#define ioremap_nocache(o,s) ioremap(o,s) - /* Use normal IO mappings for DMI */ #define dmi_ioremap ioremap #define dmi_iounmap(x,l) iounmap(x) |