[PATCH v5 2/6] arch: unify ioremap prototypes and macro aliases
From: Dan Williams
Date: Mon Jun 22 2015 - 04:30:35 EST
Some archs define the first parameter to ioremap() as unsigned long,
while the balance define it as resource_size_t. Unify on
resource_size_t to enable passing ioremap function pointers. Also, some
archs use function-like macros for defining ioremap aliases, but
asm-generic/io.h expects object-like macros, unify on the latter.
Move all handling of ioremap aliasing (i.e. ioremap_wt => ioremap) to
include/linux/io.h. Add a check to include/linux/io.h to warn at
compile time if an arch violates expectations.
Kill ARCH_HAS_IOREMAP_WC and ARCH_HAS_IOREMAP_WT in favor of just
testing for ioremap_wc, and ioremap_wt being defined. This arrangement
allows drivers to know when ioremap_<foo> are being re-directed to plain
ioremap.
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
arch/alpha/include/asm/io.h | 7 +++--
arch/arc/include/asm/io.h | 6 ----
arch/arm/include/asm/io.h | 31 ++++++++++++++++----
arch/arm64/include/asm/io.h | 23 ++++++++++++---
arch/avr32/include/asm/io.h | 22 +++++++-------
arch/avr32/mm/ioremap.c | 2 +
arch/cris/include/asm/io.h | 8 +++--
arch/cris/mm/ioremap.c | 2 +
arch/frv/include/asm/io.h | 23 +++++++--------
arch/hexagon/include/asm/io.h | 5 +++
arch/ia64/include/asm/io.h | 10 +------
arch/ia64/mm/ioremap.c | 4 +--
arch/m32r/include/asm/io.h | 9 +++---
arch/m68k/include/asm/io_mm.h | 21 +++++++++-----
arch/m68k/include/asm/io_no.h | 34 ++++++++++++++--------
arch/m68k/include/asm/raw_io.h | 3 +-
arch/m68k/mm/kmap.c | 2 +
arch/metag/include/asm/io.h | 35 ++++++++++++++---------
arch/microblaze/include/asm/io.h | 6 ----
arch/microblaze/mm/pgtable.c | 2 +
arch/mips/include/asm/io.h | 42 ++++++++++------------------
arch/mn10300/include/asm/io.h | 10 ++++---
arch/nios2/include/asm/io.h | 15 +++-------
arch/openrisc/include/asm/io.h | 3 +-
arch/openrisc/mm/ioremap.c | 2 +
arch/parisc/include/asm/io.h | 6 +---
arch/parisc/mm/ioremap.c | 2 +
arch/powerpc/include/asm/io.h | 7 ++---
arch/s390/include/asm/io.h | 8 ++---
arch/sh/include/asm/io.h | 9 +++++-
arch/sparc/include/asm/io_32.h | 7 +----
arch/sparc/include/asm/io_64.h | 8 ++---
arch/sparc/kernel/ioport.c | 2 +
arch/tile/include/asm/io.h | 17 +++++++----
arch/unicore32/include/asm/io.h | 25 +++++++++++++---
arch/x86/include/asm/io.h | 9 ++++--
arch/xtensa/include/asm/io.h | 13 +++++----
drivers/net/ethernet/sfc/io.h | 2 +
include/asm-generic/iomap.h | 8 -----
include/linux/io.h | 58 ++++++++++++++++++++++++++++++++++++++
40 files changed, 300 insertions(+), 208 deletions(-)
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index f05bdb4b1cb9..6b63689c27a6 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -282,10 +282,11 @@ extern inline void ioport_unmap(void __iomem *addr)
{
}
-static inline void __iomem *ioremap(unsigned long port, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t port, unsigned long size)
{
return IO_CONCAT(__IO_PREFIX,ioremap) (port, size);
}
+#define ioremap ioremap
static inline void __iomem *__ioremap(unsigned long port, unsigned long size,
unsigned long flags)
@@ -293,16 +294,18 @@ static inline void __iomem *__ioremap(unsigned long port, unsigned long size,
return ioremap(port, size);
}
-static inline void __iomem * ioremap_nocache(unsigned long offset,
+static inline void __iomem * ioremap_nocache(resource_size_t offset,
unsigned long size)
{
return ioremap(offset, size);
}
+#define ioremap_nocache ioremap_nocache
static inline void iounmap(volatile void __iomem *addr)
{
IO_CONCAT(__IO_PREFIX,iounmap)(addr);
}
+#define iounmap iounmap
static inline int __is_ioaddr(unsigned long addr)
{
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 7cc4ced5dbf4..e6f782863026 100644
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -13,14 +13,8 @@
#include <asm/byteorder.h>
#include <asm/page.h>
-extern void __iomem *ioremap(unsigned long physaddr, unsigned long size);
extern void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
unsigned long flags);
-extern void iounmap(const void __iomem *addr);
-
-#define ioremap_nocache(phy, sz) ioremap(phy, sz)
-#define ioremap_wc(phy, sz) ioremap(phy, sz)
-#define ioremap_wt(phy, sz) ioremap(phy, sz)
/* Change struct page to physical address */
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 1b7677d1e5e1..ecd410c716d8 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -332,12 +332,31 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
* Documentation/io-mapping.txt.
*
*/
-#define ioremap(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_nocache(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_cache(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE_CACHED)
-#define ioremap_wc(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE_WC)
-#define ioremap_wt(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define iounmap __arm_iounmap
+static inline void __iomem *ioremap(resource_size_t cookie, unsigned long size)
+{
+ return __arm_ioremap(cookie, size, MT_DEVICE);
+}
+#define ioremap ioremap
+
+static inline void __iomem *ioremap_cache(resource_size_t cookie,
+ unsigned long size)
+{
+ return __arm_ioremap(cookie, size, MT_DEVICE_CACHED);
+}
+#define ioremap_cache ioremap_cache
+
+static inline void __iomem *ioremap_wc(resource_size_t cookie,
+ unsigned long size)
+{
+ return __arm_ioremap(cookie, size, MT_DEVICE_WC);
+}
+#define ioremap_wc ioremap_wc
+
+static inline void iounmap(volatile void __iomem *addr)
+{
+ __arm_iounmap(addr);
+}
+#define iounmap iounmap
/*
* io{read,write}{16,32}be() macros
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 7116d3973058..56782487bf3c 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -166,12 +166,25 @@ extern void __memset_io(volatile void __iomem *, int, size_t);
extern void __iomem *__ioremap(phys_addr_t phys_addr, size_t size, pgprot_t prot);
extern void __iounmap(volatile void __iomem *addr);
extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
+#define ioremap_cache ioremap_cache
-#define ioremap(addr, size) __ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
-#define ioremap_nocache(addr, size) __ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
-#define ioremap_wc(addr, size) __ioremap((addr), (size), __pgprot(PROT_NORMAL_NC))
-#define ioremap_wt(addr, size) __ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
-#define iounmap __iounmap
+static inline void __iomem *ioremap(resource_size_t addr, unsigned long size)
+{
+ return __ioremap(addr, size, __pgprot(PROT_DEVICE_nGnRE));
+}
+#define ioremap ioremap
+
+static inline void __iomem *ioremap_wc(resource_size_t addr, unsigned long size)
+{
+ return __ioremap(addr, size, __pgprot(PROT_NORMAL_NC));
+}
+#define ioremap_wc ioremap_wc
+
+static inline void iounmap(volatile void __iomem *addr)
+{
+ return __iounmap(addr);
+}
+#define iounmap iounmap
/*
* io{read,write}{16,32}be() macros
diff --git a/arch/avr32/include/asm/io.h b/arch/avr32/include/asm/io.h
index e998ff5d8e1a..80af4cb6c5b6 100644
--- a/arch/avr32/include/asm/io.h
+++ b/arch/avr32/include/asm/io.h
@@ -274,7 +274,7 @@ static inline void memset_io(volatile void __iomem *addr, unsigned char val,
extern void __iomem *__ioremap(unsigned long offset, size_t size,
unsigned long flags);
-extern void __iounmap(void __iomem *addr);
+extern void __iounmap(volatile void __iomem *addr);
/*
* ioremap - map bus memory into CPU space
@@ -286,17 +286,17 @@ extern void __iounmap(void __iomem *addr);
* the other mmio helpers. The returned address is not guaranteed to
* be usable directly as a virtual address.
*/
-#define ioremap(offset, size) \
- __ioremap((offset), (size), 0)
-
-#define ioremap_nocache(offset, size) \
- __ioremap((offset), (size), 0)
-
-#define iounmap(addr) \
- __iounmap(addr)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
+{
+ return __ioremap(offset, size, 0);
+}
+#define ioremap ioremap
-#define ioremap_wc ioremap_nocache
-#define ioremap_wt ioremap_nocache
+static inline void iounmap(volatile void __iomem *addr)
+{
+ return __iounmap(addr);
+}
+#define iounmap iounmap
#define cached(addr) P1SEGADDR(addr)
#define uncached(addr) P2SEGADDR(addr)
diff --git a/arch/avr32/mm/ioremap.c b/arch/avr32/mm/ioremap.c
index 7def0d84cec6..f3eacbe5dff6 100644
--- a/arch/avr32/mm/ioremap.c
+++ b/arch/avr32/mm/ioremap.c
@@ -73,7 +73,7 @@ void __iomem *__ioremap(unsigned long phys_addr, size_t size,
}
EXPORT_SYMBOL(__ioremap);
-void __iounmap(void __iomem *addr)
+void __iounmap(volatile void __iomem *addr)
{
struct vm_struct *p;
diff --git a/arch/cris/include/asm/io.h b/arch/cris/include/asm/io.h
index 752a3f45df60..cd55a5709433 100644
--- a/arch/cris/include/asm/io.h
+++ b/arch/cris/include/asm/io.h
@@ -37,14 +37,14 @@ static inline void * phys_to_virt(unsigned long address)
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
extern void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgprot_t prot);
-static inline void __iomem * ioremap (unsigned long offset, unsigned long size)
+static inline void __iomem * ioremap(resource_size_t offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
+#define ioremap ioremap
-extern void iounmap(volatile void * __iomem addr);
-
-extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size);
+extern void __iomem * ioremap_nocache(resource_size_t offset, unsigned long size);
+#define ioremap_nocache ioremap_nocache
/*
* IO bus memory addresses are also 1:1 with the physical address
diff --git a/arch/cris/mm/ioremap.c b/arch/cris/mm/ioremap.c
index 80fdb995a8ce..13cef92df503 100644
--- a/arch/cris/mm/ioremap.c
+++ b/arch/cris/mm/ioremap.c
@@ -76,7 +76,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
* Must be freed with iounmap.
*/
-void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size)
+void __iomem *ioremap_nocache(resource_size_t phys_addr, unsigned long size)
{
return __ioremap(phys_addr | MEM_NON_CACHEABLE, size, 0);
}
diff --git a/arch/frv/include/asm/io.h b/arch/frv/include/asm/io.h
index a31b63ec4930..bde570d29c89 100644
--- a/arch/frv/include/asm/io.h
+++ b/arch/frv/include/asm/io.h
@@ -17,8 +17,6 @@
#ifdef __KERNEL__
-#define ARCH_HAS_IOREMAP_WT
-
#include <linux/types.h>
#include <asm/virtconvert.h>
#include <asm/string.h>
@@ -257,29 +255,28 @@ static inline void writel(uint32_t datum, volatile void __iomem *addr)
extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag);
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-
-static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
+#define ioremap ioremap
-static inline void __iomem *ioremap_wt(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap_wt(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}
+#define ioremap_wt ioremap_wt
-static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap_fullcache(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}
-#define ioremap_wc ioremap_nocache
-
-extern void iounmap(void volatile __iomem *addr);
+static inline void __iomem *ioremap_cache(resource_size_t physaddr, unsigned long size)
+{
+ return ioremap_fullcache(physaddr, size);
+}
+#define ioremap_cache ioremap_cache
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h
index 66f5e9a61efc..e5ecc08b7627 100644
--- a/arch/hexagon/include/asm/io.h
+++ b/arch/hexagon/include/asm/io.h
@@ -191,16 +191,19 @@ static inline void writel(u32 data, volatile void __iomem *addr)
* This is probably too long for an inline.
*/
void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size);
+#define ioremap_nocache ioremap_nocache
-static inline void __iomem *ioremap(unsigned long phys_addr, unsigned long size)
+static inline void __iomem *ioremap(resouce_size_t phys_addr, unsigned long size)
{
return ioremap_nocache(phys_addr, size);
}
+#define ioremap ioremap
static inline void iounmap(volatile void __iomem *addr)
{
__iounmap(addr);
}
+#define iounmap iounmap
#define __raw_writel writel
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index 80a7e34be009..ea4c7a243973 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -424,18 +424,12 @@ __writeq (unsigned long val, volatile void __iomem *addr)
# ifdef __KERNEL__
-extern void __iomem * ioremap(unsigned long offset, unsigned long size);
-extern void __iomem * ioremap_nocache (unsigned long offset, unsigned long size);
-extern void iounmap (volatile void __iomem *addr);
+extern void __iomem * ioremap_nocache (resource_size_t offset, unsigned long size);
+#define ioremap_nocache ioremap_nocache
extern void __iomem * early_ioremap (unsigned long phys_addr, unsigned long size);
#define early_memremap(phys_addr, size) early_ioremap(phys_addr, size)
extern void early_iounmap (volatile void __iomem *addr, unsigned long size);
#define early_memunmap(addr, size) early_iounmap(addr, size)
-static inline void __iomem * ioremap_cache (unsigned long phys_addr, unsigned long size)
-{
- return ioremap(phys_addr, size);
-}
-
/*
* String version of IO memory access ops:
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 43964cde6214..205d71445f06 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -32,7 +32,7 @@ early_ioremap (unsigned long phys_addr, unsigned long size)
}
void __iomem *
-ioremap (unsigned long phys_addr, unsigned long size)
+ioremap (resource_size_t phys_addr, unsigned long size)
{
void __iomem *addr;
struct vm_struct *area;
@@ -102,7 +102,7 @@ ioremap (unsigned long phys_addr, unsigned long size)
EXPORT_SYMBOL(ioremap);
void __iomem *
-ioremap_nocache (unsigned long phys_addr, unsigned long size)
+ioremap_nocache (resource_size_t phys_addr, unsigned long size)
{
if (kern_mem_attribute(phys_addr, size) & EFI_MEMORY_WB)
return NULL;
diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
index 0c3f25ee3381..d7f96a542816 100644
--- a/arch/m32r/include/asm/io.h
+++ b/arch/m32r/include/asm/io.h
@@ -60,15 +60,14 @@ __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
* address.
*/
-static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
+#define ioremap ioremap
-extern void iounmap(volatile void __iomem *addr);
-#define ioremap_nocache(off,size) ioremap(off,size)
-#define ioremap_wc ioremap_nocache
-#define ioremap_wt ioremap_nocache
+void iounmap(volatile void __iomem *addr);
+#define iounmap iounmap
/*
* IO bus memory addresses are also 1:1 with the physical address
diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h
index 618c85d3c786..7658252c64ab 100644
--- a/arch/m68k/include/asm/io_mm.h
+++ b/arch/m68k/include/asm/io_mm.h
@@ -20,8 +20,6 @@
#ifdef __KERNEL__
-#define ARCH_HAS_IOREMAP_WT
-
#include <linux/compiler.h>
#include <asm/raw_io.h>
#include <asm/virtconvert.h>
@@ -459,25 +457,32 @@ static inline void isa_delay(void)
#define mmiowb()
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
-static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-static inline void __iomem *ioremap_wt(unsigned long physaddr,
+#define ioremap ioremap
+
+static inline void __iomem *ioremap_wt(resource_size_t physaddr,
unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}
+#define ioremap_wt ioremap_wt
+
static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}
+static inline void __iomem *ioremap_cache(resource_size_t physaddr,
+ unsigned long size)
+{
+ return ioremap_fullcache(physaddr, size);
+}
+#define ioremap_cache ioremap_cache
+
static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
{
__builtin_memset((void __force *) addr, val, count);
diff --git a/arch/m68k/include/asm/io_no.h b/arch/m68k/include/asm/io_no.h
index ad7bd40e6742..ea9b280ebc33 100644
--- a/arch/m68k/include/asm/io_no.h
+++ b/arch/m68k/include/asm/io_no.h
@@ -3,8 +3,6 @@
#ifdef __KERNEL__
-#define ARCH_HAS_IOREMAP_WT
-
#include <asm/virtconvert.h>
#include <asm-generic/iomap.h>
@@ -143,28 +141,40 @@ static inline void io_insl(unsigned int addr, void *buf, int len)
#define IOMAP_NOCACHE_NONSER 2
#define IOMAP_WRITETHROUGH 3
-static inline void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
-{
- return (void *) physaddr;
-}
-static inline void *ioremap(unsigned long physaddr, unsigned long size)
+static inline void __iomem *__ioremap(unsigned long physaddr,
+ unsigned long size, int cacheflag)
{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
+ return (void __iomem *) physaddr;
}
-static inline void *ioremap_nocache(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
-static inline void *ioremap_wt(unsigned long physaddr, unsigned long size)
+#define ioremap ioremap
+
+static inline void __iomem *ioremap_wt(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
}
-static inline void *ioremap_fullcache(unsigned long physaddr, unsigned long size)
+#define ioremap_wt ioremap_wt
+
+static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
+ unsigned long size)
{
return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
}
-#define iounmap(addr) do { } while(0)
+static inline void __iomem *ioremap_cache(resource_size_t physaddr,
+ unsigned long size)
+{
+ return ioremap_fullcache(physaddr, size);
+}
+#define ioremap_cache ioremap_cache
+
+static inline void iounmap(volatile void __iomem *addr)
+{
+}
+#define iounmap iounmap
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
diff --git a/arch/m68k/include/asm/raw_io.h b/arch/m68k/include/asm/raw_io.h
index 932faa35655b..abb7708f02ed 100644
--- a/arch/m68k/include/asm/raw_io.h
+++ b/arch/m68k/include/asm/raw_io.h
@@ -19,7 +19,8 @@
#define IOMAP_NOCACHE_NONSER 2
#define IOMAP_WRITETHROUGH 3
-extern void iounmap(void __iomem *addr);
+extern void iounmap(volatile void __iomem *addr);
+#define iounmap iounmap
extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
int cacheflag);
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
index 6e4955bc542b..f0d76d9f0643 100644
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -226,7 +226,7 @@ EXPORT_SYMBOL(__ioremap);
/*
* Unmap an ioremap()ed region again
*/
-void iounmap(void __iomem *addr)
+void iounmap(volatile void __iomem *addr)
{
#ifdef CONFIG_AMIGA
if ((!MACH_IS_AMIGA) ||
diff --git a/arch/metag/include/asm/io.h b/arch/metag/include/asm/io.h
index 9890f21eadbe..50e95ecb4bc2 100644
--- a/arch/metag/include/asm/io.h
+++ b/arch/metag/include/asm/io.h
@@ -148,22 +148,29 @@ extern void __iounmap(void __iomem *addr);
* address is not guaranteed to be usable directly as a virtual
* address.
*/
-#define ioremap(offset, size) \
- __ioremap((offset), (size), 0)
-
-#define ioremap_nocache(offset, size) \
- __ioremap((offset), (size), 0)
-
-#define ioremap_cached(offset, size) \
- __ioremap((offset), (size), _PAGE_CACHEABLE)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
+{
+ return __ioremap(offset, size, 0);
+}
+#define ioremap ioremap
-#define ioremap_wc(offset, size) \
- __ioremap((offset), (size), _PAGE_WR_COMBINE)
+static inline void __iomem *ioremap_cache(resource_size_t offset, unsigned long size)
+{
+ return __ioremap(offset, size, _PAGE_CACHEABLE);
+}
+#define ioremap_cache ioremap_cache
+#define ioremap_cached ioremap_cache
-#define ioremap_wt(offset, size) \
- __ioremap((offset), (size), 0)
+static inline void __iomem *ioremap_wc(resource_size_t offset, unsigned long size)
+{
+ return __ioremap(offset, size, _PAGE_WR_COMBINE);
+}
+#define ioremap_wc ioremap_wc
-#define iounmap(addr) \
- __iounmap(addr)
+static inline void iounmap(volatile void __iomem *addr)
+{
+ return __iounmap(addr);
+}
+#define iounmap iounmap
#endif /* _ASM_METAG_IO_H */
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
index 39b6315db82e..60ca27d7dd1f 100644
--- a/arch/microblaze/include/asm/io.h
+++ b/arch/microblaze/include/asm/io.h
@@ -36,13 +36,7 @@ extern resource_size_t isa_mem_base;
#ifdef CONFIG_MMU
#define page_to_bus(page) (page_to_phys(page))
-extern void iounmap(void __iomem *addr);
-
-extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
-#define ioremap_nocache(addr, size) ioremap((addr), (size))
#define ioremap_fullcache(addr, size) ioremap((addr), (size))
-#define ioremap_wc(addr, size) ioremap((addr), (size))
-#define ioremap_wt(addr, size) ioremap((addr), (size))
#endif /* CONFIG_MMU */
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 4f4520e779a5..2b47b34ff26c 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -126,7 +126,7 @@ void __iomem *ioremap(phys_addr_t addr, unsigned long size)
}
EXPORT_SYMBOL(ioremap);
-void iounmap(void __iomem *addr)
+void iounmap(volatile void __iomem *addr)
{
if ((__force void *)addr > high_memory &&
(unsigned long) addr < ioremap_bot)
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 9e777cd42b67..a907e634f914 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -232,30 +232,11 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
* address is not guaranteed to be usable directly as a virtual
* address.
*/
-#define ioremap(offset, size) \
- __ioremap_mode((offset), (size), _CACHE_UNCACHED)
-
-/*
- * ioremap_nocache - map bus memory into CPU space
- * @offset: bus address of the memory
- * @size: size of the resource to map
- *
- * ioremap_nocache performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address.
- *
- * This version of ioremap ensures that the memory is marked uncachable
- * on the CPU as well as honouring existing caching rules from things like
- * the PCI bus. Note that there are other caches and buffers on many
- * busses. In particular driver authors should read up on PCI writes
- *
- * It's useful if some control registers are in such an area and
- * write combining or read caching is not desirable:
- */
-#define ioremap_nocache(offset, size) \
- __ioremap_mode((offset), (size), _CACHE_UNCACHED)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
+{
+ return __ioremap_mode(offset, size, _CACHE_UNCACHED);
+}
+#define ioremap ioremap
/*
* ioremap_cachable - map bus memory into CPU space
@@ -272,8 +253,14 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
* the CPU. Also enables full write-combining. Useful for some
* memory-like regions on I/O busses.
*/
-#define ioremap_cachable(offset, size) \
- __ioremap_mode((offset), (size), _page_cachable_default)
+#define ioremap_cachable ioremap_cache
+extern unsigned long _page_cachable_default;
+static inline void __iomem *ioremap_cache(resource_size_t offset,
+ unsigned long size)
+{
+ return __ioremap_mode(offset, size, _page_cachable_default);
+}
+#define ioremap_cache ioremap_cache
/*
* These two are MIPS specific ioremap variant. ioremap_cacheable_cow
@@ -286,7 +273,7 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
#define ioremap_uncached_accelerated(offset, size) \
__ioremap_mode((offset), (size), _CACHE_UNCACHED_ACCELERATED)
-static inline void iounmap(const volatile void __iomem *addr)
+static inline void iounmap(volatile void __iomem *addr)
{
if (plat_iounmap(addr))
return;
@@ -301,6 +288,7 @@ static inline void iounmap(const volatile void __iomem *addr)
#undef __IS_KSEG1
}
+#define iounmap iounmap
#ifdef CONFIG_CPU_CAVIUM_OCTEON
#define war_octeon_io_reorder_wmb() wmb()
diff --git a/arch/mn10300/include/asm/io.h b/arch/mn10300/include/asm/io.h
index 07c5b4a3903b..48629631f718 100644
--- a/arch/mn10300/include/asm/io.h
+++ b/arch/mn10300/include/asm/io.h
@@ -266,27 +266,29 @@ static inline void __iomem *__ioremap(unsigned long offset, unsigned long size,
return (void __iomem *) offset;
}
-static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return (void __iomem *)(offset & ~0x20000000);
}
+#define ioremap ioremap
/*
* This one maps high address device memory and turns off caching for that
* area. it's useful if some control registers are in such an area and write
* combining or read caching is not desirable:
*/
-static inline void __iomem *ioremap_nocache(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size)
{
return (void __iomem *) (offset | 0x20000000);
}
-
+#define ioremap_nocache ioremap_nocache
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
-static inline void iounmap(void __iomem *addr)
+static inline void iounmap(volatile void __iomem *addr)
{
}
+#define iounmap iounmap
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index c5a62da22cd2..161a63265813 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -29,24 +29,17 @@ extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
unsigned long cacheflag);
extern void __iounmap(void __iomem *addr);
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t physaddr, unsigned long size)
{
return __ioremap(physaddr, size, 0);
}
+#define ioremap ioremap
-static inline void __iomem *ioremap_nocache(unsigned long physaddr,
- unsigned long size)
-{
- return __ioremap(physaddr, size, 0);
-}
-
-static inline void iounmap(void __iomem *addr)
+static inline void iounmap(volatile void __iomem *addr)
{
__iounmap(addr);
}
-
-#define ioremap_wc ioremap_nocache
-#define ioremap_wt ioremap_nocache
+#define iounmap iounmap
/* Pages to physical address... */
#define page_to_phys(page) virt_to_phys(page_to_virt(page))
diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
index 7c691399da3f..4f7636e7901d 100644
--- a/arch/openrisc/include/asm/io.h
+++ b/arch/openrisc/include/asm/io.h
@@ -39,6 +39,7 @@ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
{
return __ioremap(offset, size, PAGE_KERNEL);
}
+#define ioremap ioremap
/* #define _PAGE_CI 0x002 */
static inline void __iomem *ioremap_nocache(phys_addr_t offset,
@@ -47,6 +48,6 @@ static inline void __iomem *ioremap_nocache(phys_addr_t offset,
return __ioremap(offset, size,
__pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_CI));
}
+#define ioremap_nocache ioremap_nocache
-extern void iounmap(void *addr);
#endif
diff --git a/arch/openrisc/mm/ioremap.c b/arch/openrisc/mm/ioremap.c
index 62b08ef392be..2af1bbe5f80c 100644
--- a/arch/openrisc/mm/ioremap.c
+++ b/arch/openrisc/mm/ioremap.c
@@ -81,7 +81,7 @@ __ioremap(phys_addr_t addr, unsigned long size, pgprot_t prot)
return (void __iomem *)(offset + (char *)v);
}
-void iounmap(void *addr)
+void iounmap(volatile void __iomem *addr)
{
/* If the page is from the fixmap pool then we just clear out
* the fixmap mapping.
diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
index 8cd0abf28ffb..8a4ecb47f960 100644
--- a/arch/parisc/include/asm/io.h
+++ b/arch/parisc/include/asm/io.h
@@ -132,13 +132,11 @@ extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsign
/* Most machines react poorly to I/O-space being cacheable... Instead let's
* define ioremap() in terms of ioremap_nocache().
*/
-static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem * ioremap(resource_size_t offset, unsigned long size)
{
return __ioremap(offset, size, _PAGE_NO_CACHE);
}
-#define ioremap_nocache(off, sz) ioremap((off), (sz))
-
-extern void iounmap(const volatile void __iomem *addr);
+#define ioremap ioremap
static inline unsigned char __raw_readb(const volatile void __iomem *addr)
{
diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index 838d0259cd27..3830d8af80a4 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -91,7 +91,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
}
EXPORT_SYMBOL(__ioremap);
-void iounmap(const volatile void __iomem *addr)
+void iounmap(volatile void __iomem *addr)
{
if (addr > high_memory)
return vfree((void *) (PAGE_MASK & (unsigned long __force) addr));
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index a8d2ef30d473..081f7d3d8913 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -2,8 +2,6 @@
#define _ASM_POWERPC_IO_H
#ifdef __KERNEL__
-#define ARCH_HAS_IOREMAP_WC
-
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -25,7 +23,6 @@ extern struct pci_dev *isa_bridge_pcidev;
#endif
#include <linux/device.h>
-#include <linux/io.h>
#include <linux/compiler.h>
#include <asm/page.h>
@@ -717,12 +714,14 @@ static inline void iosync(void)
*
*/
extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
+#define ioremap ioremap
extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
unsigned long flags);
extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size);
-#define ioremap_nocache(addr, size) ioremap((addr), (size))
+#define ioremap_wc ioremap_wc
extern void iounmap(volatile void __iomem *addr);
+#define iounmap iounmap
extern void __iomem *__ioremap(phys_addr_t, unsigned long size,
unsigned long flags);
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index cb5fdf3a78fc..1cb32250d12b 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -27,18 +27,16 @@ void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
#ifdef CONFIG_PCI
-#define ioremap_nocache(addr, size) ioremap(addr, size)
-#define ioremap_wc ioremap_nocache
-#define ioremap_wt ioremap_nocache
-
-static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return (void __iomem *) offset;
}
+#define ioremap ioremap
static inline void iounmap(volatile void __iomem *addr)
{
}
+#define iounmap iounmap
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 728c4c571f40..5fd16fe8ecc9 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -336,12 +336,14 @@ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
{
return __ioremap_mode(offset, size, PAGE_KERNEL_NOCACHE);
}
+#define ioremap ioremap
static inline void __iomem *
ioremap_cache(phys_addr_t offset, unsigned long size)
{
return __ioremap_mode(offset, size, PAGE_KERNEL);
}
+#define ioremap_cache ioremap_cache
#ifdef CONFIG_HAVE_IOREMAP_PROT
static inline void __iomem *
@@ -367,8 +369,11 @@ static inline void ioremap_fixed_init(void) { }
static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
#endif
-#define ioremap_nocache ioremap
-#define iounmap __iounmap
+static inline void iounmap(volatile void __iomem *addr)
+{
+ __iounmap(addr);
+}
+#define iounmap iounmap
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index 57f26c398dc9..138e47e0c7d2 100644
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -126,11 +126,8 @@ static inline void sbus_memcpy_toio(volatile void __iomem *dst,
* Bus number may be embedded in the higher bits of the physical address.
* This is why we have no bus number argument to ioremap().
*/
-void __iomem *ioremap(unsigned long offset, unsigned long size);
-#define ioremap_nocache(X,Y) ioremap((X),(Y))
-#define ioremap_wc(X,Y) ioremap((X),(Y))
-#define ioremap_wt(X,Y) ioremap((X),(Y))
-void iounmap(volatile void __iomem *addr);
+void __iomem *ioremap(resource_size_t offset, unsigned long size);
+#define ioremap ioremap
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr);
diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index c32fa3f752c8..47e90988b562 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -395,18 +395,16 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
/* On sparc64 we have the whole physical IO address space accessible
* using physically addressed loads and stores, so this does nothing.
*/
-static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return (void __iomem *)offset;
}
-
-#define ioremap_nocache(X,Y) ioremap((X),(Y))
-#define ioremap_wc(X,Y) ioremap((X),(Y))
-#define ioremap_wt(X,Y) ioremap((X),(Y))
+#define ioremap ioremap
static inline void iounmap(volatile void __iomem *addr)
{
}
+#define iounmap iounmap
#define ioread8 readb
#define ioread16 readw
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 28fed53b13a0..b8c999f5b821 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -121,7 +121,7 @@ static void xres_free(struct xresource *xrp) {
*
* Bus type is always zero on IIep.
*/
-void __iomem *ioremap(unsigned long offset, unsigned long size)
+void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
char name[14];
diff --git a/arch/tile/include/asm/io.h b/arch/tile/include/asm/io.h
index dc61de15c1f9..bf7f0fffb8db 100644
--- a/arch/tile/include/asm/io.h
+++ b/arch/tile/include/asm/io.h
@@ -48,14 +48,19 @@ extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size,
pgprot_t pgprot);
extern void iounmap(volatile void __iomem *addr);
#else
-#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
-#define iounmap(addr) ((void)0)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
+{
+ return (void __force __iomem *) offset;
+}
+
+static inline void iounmap(volatile void __iomem *addr)
+{
+}
#endif
+#define ioremap ioremap
+#define iounmap iounmap
-#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
-#define ioremap_wc(physaddr, size) ioremap(physaddr, size)
-#define ioremap_wt(physaddr, size) ioremap(physaddr, size)
-#define ioremap_fullcache(physaddr, size) ioremap(physaddr, size)
+#define ioremap_fullcache ioremap
#define mmiowb()
diff --git a/arch/unicore32/include/asm/io.h b/arch/unicore32/include/asm/io.h
index cb1d8fd2b16b..1088450fabfd 100644
--- a/arch/unicore32/include/asm/io.h
+++ b/arch/unicore32/include/asm/io.h
@@ -18,7 +18,6 @@
#include <asm/memory.h>
#define PCI_IOBASE PKUNITY_PCILIO_BASE
-#include <asm-generic/io.h>
/*
* __uc32_ioremap and __uc32_ioremap_cached takes CPU physical address.
@@ -34,10 +33,26 @@ extern void __uc32_iounmap(volatile void __iomem *addr);
* Documentation/io-mapping.txt.
*
*/
-#define ioremap(cookie, size) __uc32_ioremap(cookie, size)
-#define ioremap_cached(cookie, size) __uc32_ioremap_cached(cookie, size)
-#define ioremap_nocache(cookie, size) __uc32_ioremap(cookie, size)
-#define iounmap(cookie) __uc32_iounmap(cookie)
+static inline void __iomem *ioremap(resource_size_t cookie, unsigned long size)
+{
+ return __uc32_ioremap(cookie, size);
+}
+#define ioremap ioremap
+
+static inline void __iomem *ioremap_cache(resource_size_t cookie, unsigned long size)
+{
+ return __uc32_ioremap_cached(cookie, size);
+}
+#define ioremap_cache ioremap_cache
+#define ioremap_cached ioremap_cached
+
+static inline void iounmap(volatile void __iomem *addr)
+{
+ return __uc32_iounmap(addr);
+}
+#define iounmap iounmap
+
+#include <asm-generic/io.h>
#define readb_relaxed readb
#define readw_relaxed readw
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 83ec9b1d77cc..97ae3b748d9e 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -34,9 +34,6 @@
* - Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxx>
*/
-#define ARCH_HAS_IOREMAP_WC
-#define ARCH_HAS_IOREMAP_WT
-
#include <linux/string.h>
#include <linux/compiler.h>
#include <asm/page.h>
@@ -179,8 +176,10 @@ static inline unsigned int isa_virt_to_bus(volatile void *address)
* look at pci_iomap().
*/
extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
+#define ioremap_nocache ioremap_nocache
extern void __iomem *ioremap_uc(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
+#define ioremap_cache ioremap_cache
extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size,
unsigned long prot_val);
@@ -191,8 +190,10 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return ioremap_nocache(offset, size);
}
+#define ioremap ioremap
extern void iounmap(volatile void __iomem *addr);
+#define iounmap iounmap
extern void set_iounmap_nonlazy(void);
@@ -321,7 +322,9 @@ extern void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
extern int ioremap_change_attr(unsigned long vaddr, unsigned long size,
enum page_cache_mode pcm);
extern void __iomem *ioremap_wc(resource_size_t offset, unsigned long size);
+#define ioremap_wc ioremap_wc
extern void __iomem *ioremap_wt(resource_size_t offset, unsigned long size);
+#define ioremap_wt ioremap_wt
extern bool is_early_ioremap_ptep(pte_t *ptep);
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index c39bb6e61911..ae20fc5a1b5f 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -38,7 +38,7 @@ static inline unsigned long xtensa_get_kio_paddr(void)
* Return the virtual address for the specified bus memory.
* Note that we currently don't support any address outside the KIO segment.
*/
-static inline void __iomem *ioremap_nocache(unsigned long offset,
+static inline void __iomem *ioremap_nocache(resource_size_t offset,
unsigned long size)
{
if (offset >= XCHAL_KIO_PADDR
@@ -47,8 +47,9 @@ static inline void __iomem *ioremap_nocache(unsigned long offset,
else
BUG();
}
+#define ioremap_nocache ioremap_nocache
-static inline void __iomem *ioremap_cache(unsigned long offset,
+static inline void __iomem *ioremap_cache(resource_size_t offset,
unsigned long size)
{
if (offset >= XCHAL_KIO_PADDR
@@ -57,18 +58,18 @@ static inline void __iomem *ioremap_cache(unsigned long offset,
else
BUG();
}
+#define ioremap_cache ioremap_cache
-#define ioremap_wc ioremap_nocache
-#define ioremap_wt ioremap_nocache
-
-static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
{
return ioremap_nocache(offset, size);
}
+#define ioremap ioremap
static inline void iounmap(volatile void __iomem *addr)
{
}
+#define iounmap iounmap
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
diff --git a/drivers/net/ethernet/sfc/io.h b/drivers/net/ethernet/sfc/io.h
index afb94aa2c15e..9d54dd7f4c72 100644
--- a/drivers/net/ethernet/sfc/io.h
+++ b/drivers/net/ethernet/sfc/io.h
@@ -73,7 +73,7 @@
*/
#ifdef CONFIG_X86_64
/* PIO is a win only if write-combining is possible */
-#ifdef ARCH_HAS_IOREMAP_WC
+#ifdef ioremap_wc
#define EFX_USE_PIO 1
#endif
#endif
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index d8f8622fa044..4789b1cec313 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -62,14 +62,6 @@ extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
extern void ioport_unmap(void __iomem *);
#endif
-#ifndef ARCH_HAS_IOREMAP_WC
-#define ioremap_wc ioremap_nocache
-#endif
-
-#ifndef ARCH_HAS_IOREMAP_WT
-#define ioremap_wt ioremap_nocache
-#endif
-
#ifdef CONFIG_PCI
/* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */
struct pci_dev;
diff --git a/include/linux/io.h b/include/linux/io.h
index fb5a99800e77..41e93fe14b3c 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -80,6 +80,64 @@ int check_signature(const volatile void __iomem *io_addr,
const unsigned char *signature, int length);
void devm_ioremap_release(struct device *dev, void *res);
+#ifndef ioremap
+void __iomem *ioremap(resource_size_t offset, unsigned long size);
+#endif
+
+#ifndef iounmap
+void iounmap(volatile void __iomem *addr);
+#endif
+
+#ifndef ioremap_nocache
+static inline void __iomem *ioremap_nocache(resource_size_t offset,
+ unsigned long size)
+{
+ return ioremap(offset, size);
+}
+#endif
+
+#ifndef ioremap_wc
+static inline void __iomem *ioremap_wc(resource_size_t offset,
+ unsigned long size)
+{
+ return ioremap(offset, size);
+}
+#endif
+
+#ifndef ioremap_wt
+static inline void __iomem *ioremap_wt(resource_size_t offset,
+ unsigned long size)
+{
+ return ioremap(offset, size);
+}
+#endif
+
+#ifndef ioremap_cache
+static inline void __iomem *ioremap_cache(resource_size_t offset,
+ unsigned long size)
+{
+ return ioremap(offset, size);
+}
+#endif
+
+/*
+ * Throw warnings if an arch fails to define or uses unexpected data
+ * types in its ioremap implementations.
+ */
+static inline void ioremap_test(void)
+{
+ void __iomem *(*map)(resource_size_t offset, unsigned long size)
+ __always_unused;
+ void (*unmap)(volatile void __iomem *addr) __always_unused;
+
+ map = ioremap;
+ map = ioremap_nocache;
+ map = ioremap_cache;
+ map = ioremap_wc;
+ map = ioremap_wt;
+ unmap = iounmap;
+}
+
/*
* Some systems do not have legacy ISA devices.
* /dev/port is not a valid interface on these systems.
--
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