[POWERPC] Merge iSeries i/o operations with the rest

This patch changes the io operations so that they are out of line if
CONFIG_PPC_ISERIES is set and includes a firmware feature check in
that case.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

4 files changed, 319 insertions, 183 deletions

diff --git a/arch/powerpc/kernel/io.c b/arch/powerpc/kernel/io.c
index 80a3209acef4..e98180686b35 100644
--- a/arch/powerpc/kernel/io.c
+++ b/arch/powerpc/kernel/io.c
@@ -22,12 +22,16 @@
 #include <linux/module.h>
 
 #include <asm/io.h>
+#include <asm/firmware.h>
+#include <asm/bug.h>
 
 void _insb(volatile u8 __iomem *port, void *buf, long count)
 {
         u8 *tbuf = buf;
         u8 tmp;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
@@ -44,6 +48,8 @@ void _outsb(volatile u8 __iomem *port, const void *buf, long count)
 {
         const u8 *tbuf = buf;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
@@ -59,6 +65,8 @@ void _insw_ns(volatile u16 __iomem *port, void *buf, long count)
         u16 *tbuf = buf;
         u16 tmp;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
@@ -75,6 +83,8 @@ void _outsw_ns(volatile u16 __iomem *port, const void *buf, long count)
 {
         const u16 *tbuf = buf;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
@@ -90,6 +100,8 @@ void _insl_ns(volatile u32 __iomem *port, void *buf, long count)
         u32 *tbuf = buf;
         u32 tmp;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
@@ -106,6 +118,8 @@ void _outsl_ns(volatile u32 __iomem *port, const void *buf, long count)
 {
         const u32 *tbuf = buf;
 
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
         if (unlikely(count <= 0))
                 return;
         asm volatile("sync");
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index f4d427a7bb2d..3eb12065df23 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -34,6 +34,7 @@
 #include <asm/pci-bridge.h>
 #include <asm/iommu.h>
 #include <asm/abs_addr.h>
+#include <asm/firmware.h>
 
 #include <asm/iseries/hv_call_xm.h>
 #include <asm/iseries/mf.h>
@@ -270,46 +271,6 @@ void pcibios_fixup_resources(struct pci_dev *pdev)
 }
 
 /*
- * I/0 Memory copy MUST use mmio commands on iSeries
- * To do; For performance, include the hv call directly
- */
-void iSeries_memset_io(volatile void __iomem *dest, char c, size_t Count)
-{
-        u8 ByteValue = c;
-        long NumberOfBytes = Count;
-
-        while (NumberOfBytes > 0) {
-                iSeries_Write_Byte(ByteValue, dest++);
-                -- NumberOfBytes;
-        }
-}
-EXPORT_SYMBOL(iSeries_memset_io);
-
-void iSeries_memcpy_toio(volatile void __iomem *dest, void *source, size_t count)
-{
-        char *src = source;
-        long NumberOfBytes = count;
-
-        while (NumberOfBytes > 0) {
-                iSeries_Write_Byte(*src++, dest++);
-                -- NumberOfBytes;
-        }
-}
-EXPORT_SYMBOL(iSeries_memcpy_toio);
-
-void iSeries_memcpy_fromio(void *dest, const volatile void __iomem *src, size_t count)
-{
-        char *dst = dest;
-        long NumberOfBytes = count;
-
-        while (NumberOfBytes > 0) {
-                *dst++ = iSeries_Read_Byte(src++);
-                -- NumberOfBytes;
-        }
-}
-EXPORT_SYMBOL(iSeries_memcpy_fromio);
-
-/*
  * Look down the chain to find the matching Device Device
  */
 static struct device_node *find_Device_Node(int bus, int devfn)
@@ -491,7 +452,7 @@ static inline struct device_node *xlate_iomm_address(
  * iSeries_Read_Word = Read Word  (16 bit)
  * iSeries_Read_Long = Read Long  (32 bit)
  */
-u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
+static u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -518,9 +479,8 @@ u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
 
         return (u8)ret.value;
 }
-EXPORT_SYMBOL(iSeries_Read_Byte);
 
-u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
+static u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -548,9 +508,8 @@ u16 iSeries_Read_Word(const volatile void __iomem *IoAddress)
 
         return swab16((u16)ret.value);
 }
-EXPORT_SYMBOL(iSeries_Read_Word);
 
-u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
+static u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -578,7 +537,6 @@ u32 iSeries_Read_Long(const volatile void __iomem *IoAddress)
 
         return swab32((u32)ret.value);
 }
-EXPORT_SYMBOL(iSeries_Read_Long);
 
 /*
  * Write MM I/O Instructions for the iSeries
@@ -587,7 +545,7 @@ EXPORT_SYMBOL(iSeries_Read_Long);
  * iSeries_Write_Word = Write Word(16 bit)
  * iSeries_Write_Long = Write Long(32 bit)
  */
-void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -612,9 +570,8 @@ void iSeries_Write_Byte(u8 data, volatile void __iomem *IoAddress)
                 rc = HvCall4(HvCallPciBarStore8, dsa, BarOffset, data, 0);
         } while (CheckReturnCode("WWB", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Byte);
 
-void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -639,9 +596,8 @@ void iSeries_Write_Word(u16 data, volatile void __iomem *IoAddress)
                 rc = HvCall4(HvCallPciBarStore16, dsa, BarOffset, swab16(data), 0);
         } while (CheckReturnCode("WWW", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Word);
 
-void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
+static void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
 {
         u64 BarOffset;
         u64 dsa;
@@ -666,4 +622,224 @@ void iSeries_Write_Long(u32 data, volatile void __iomem *IoAddress)
                 rc = HvCall4(HvCallPciBarStore32, dsa, BarOffset, swab32(data), 0);
         } while (CheckReturnCode("WWL", DevNode, &retry, rc) != 0);
 }
-EXPORT_SYMBOL(iSeries_Write_Long);
+
+extern unsigned char __raw_readb(const volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return *(volatile unsigned char __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readb);
+
+extern unsigned short __raw_readw(const volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return *(volatile unsigned short __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readw);
+
+extern unsigned int __raw_readl(const volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return *(volatile unsigned int __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readl);
+
+extern unsigned long __raw_readq(const volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return *(volatile unsigned long __force *)addr;
+}
+EXPORT_SYMBOL(__raw_readq);
+
+extern void __raw_writeb(unsigned char v, volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        *(volatile unsigned char __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writeb);
+
+extern void __raw_writew(unsigned short v, volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        *(volatile unsigned short __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writew);
+
+extern void __raw_writel(unsigned int v, volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        *(volatile unsigned int __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writel);
+
+extern void __raw_writeq(unsigned long v, volatile void __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        *(volatile unsigned long __force *)addr = v;
+}
+EXPORT_SYMBOL(__raw_writeq);
+
+int in_8(const volatile unsigned char __iomem *addr)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                return iSeries_Read_Byte(addr);
+        return __in_8(addr);
+}
+EXPORT_SYMBOL(in_8);
+
+void out_8(volatile unsigned char __iomem *addr, int val)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                iSeries_Write_Byte(val, addr);
+        else
+                __out_8(addr, val);
+}
+EXPORT_SYMBOL(out_8);
+
+int in_le16(const volatile unsigned short __iomem *addr)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                return iSeries_Read_Word(addr);
+        return __in_le16(addr);
+}
+EXPORT_SYMBOL(in_le16);
+
+int in_be16(const volatile unsigned short __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return __in_be16(addr);
+}
+EXPORT_SYMBOL(in_be16);
+
+void out_le16(volatile unsigned short __iomem *addr, int val)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                iSeries_Write_Word(val, addr);
+        else
+                __out_le16(addr, val);
+}
+EXPORT_SYMBOL(out_le16);
+
+void out_be16(volatile unsigned short __iomem *addr, int val)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        __out_be16(addr, val);
+}
+EXPORT_SYMBOL(out_be16);
+
+unsigned in_le32(const volatile unsigned __iomem *addr)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                return iSeries_Read_Long(addr);
+        return __in_le32(addr);
+}
+EXPORT_SYMBOL(in_le32);
+
+unsigned in_be32(const volatile unsigned __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return __in_be32(addr);
+}
+EXPORT_SYMBOL(in_be32);
+
+void out_le32(volatile unsigned __iomem *addr, int val)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                iSeries_Write_Long(val, addr);
+        else
+                __out_le32(addr, val);
+}
+EXPORT_SYMBOL(out_le32);
+
+void out_be32(volatile unsigned __iomem *addr, int val)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        __out_be32(addr, val);
+}
+EXPORT_SYMBOL(out_be32);
+
+unsigned long in_le64(const volatile unsigned long __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return __in_le64(addr);
+}
+EXPORT_SYMBOL(in_le64);
+
+unsigned long in_be64(const volatile unsigned long __iomem *addr)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        return __in_be64(addr);
+}
+EXPORT_SYMBOL(in_be64);
+
+void out_le64(volatile unsigned long __iomem *addr, unsigned long val)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        __out_le64(addr, val);
+}
+EXPORT_SYMBOL(out_le64);
+
+void out_be64(volatile unsigned long __iomem *addr, unsigned long val)
+{
+        BUG_ON(firmware_has_feature(FW_FEATURE_ISERIES));
+
+        __out_be64(addr, val);
+}
+EXPORT_SYMBOL(out_be64);
+
+void memset_io(volatile void __iomem *addr, int c, unsigned long n)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+                volatile char __iomem *d = addr;
+
+                while (n-- > 0) {
+                        iSeries_Write_Byte(c, d++);
+                }
+        } else
+                eeh_memset_io(addr, c, n);
+}
+EXPORT_SYMBOL(memset_io);
+
+void memcpy_fromio(void *dest, const volatile void __iomem *src,
+                                 unsigned long n)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+                char *d = dest;
+                const volatile char __iomem *s = src;
+
+                while (n-- > 0) {
+                        *d++ = iSeries_Read_Byte(s++);
+                }
+        } else
+                eeh_memcpy_fromio(dest, src, n);
+}
+EXPORT_SYMBOL(memcpy_fromio);
+
+void memcpy_toio(volatile void __iomem *dest, const void *src, unsigned long n)
+{
+        if (firmware_has_feature(FW_FEATURE_ISERIES)) {
+                const char *s = src;
+                volatile char __iomem *d = dest;
+
+                while (n-- > 0) {
+                        iSeries_Write_Byte(*s++, d++);
+                }
+        } else
+                eeh_memcpy_toio(dest, src, n);
+}
+EXPORT_SYMBOL(memcpy_toio);
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 174fb89d5eda..46bae1cf385b 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -20,9 +20,6 @@ extern int check_legacy_ioport(unsigned long base_port);
 #include <asm/page.h>
 #include <asm/byteorder.h>
 #include <asm/paca.h>
-#ifdef CONFIG_PPC_ISERIES 
-#include <asm/iseries/iseries_io.h>
-#endif  
 #include <asm/synch.h>
 #include <asm/delay.h>
 
@@ -37,41 +34,53 @@ extern unsigned long isa_io_base;
 extern unsigned long pci_io_base;
 
 #ifdef CONFIG_PPC_ISERIES
-/* __raw_* accessors aren't supported on iSeries */
-#define __raw_readb(addr)       { BUG(); 0; }
-#define __raw_readw(addr)       { BUG(); 0; }
-#define __raw_readl(addr)       { BUG(); 0; }
-#define __raw_readq(addr)       { BUG(); 0; }
-#define __raw_writeb(v, addr)   { BUG(); 0; }
-#define __raw_writew(v, addr)   { BUG(); 0; }
-#define __raw_writel(v, addr)   { BUG(); 0; }
-#define __raw_writeq(v, addr)   { BUG(); 0; }
-#define readb(addr)             iSeries_Read_Byte(addr)
-#define readw(addr)             iSeries_Read_Word(addr)
-#define readl(addr)             iSeries_Read_Long(addr)
-#define writeb(data, addr)      iSeries_Write_Byte((data),(addr))
-#define writew(data, addr)      iSeries_Write_Word((data),(addr))
-#define writel(data, addr)      iSeries_Write_Long((data),(addr))
-#define memset_io(a,b,c)        iSeries_memset_io((a),(b),(c))
-#define memcpy_fromio(a,b,c)    iSeries_memcpy_fromio((a), (b), (c))
-#define memcpy_toio(a,b,c)      iSeries_memcpy_toio((a), (b), (c))
-
-#define inb(addr)               readb(((void __iomem *)(long)(addr)))
-#define inw(addr)               readw(((void __iomem *)(long)(addr)))
-#define inl(addr)               readl(((void __iomem *)(long)(addr)))
-#define outb(data,addr)         writeb(data,((void __iomem *)(long)(addr)))
-#define outw(data,addr)         writew(data,((void __iomem *)(long)(addr)))
-#define outl(data,addr)         writel(data,((void __iomem *)(long)(addr)))
-/*
- * The *_ns versions below don't do byte-swapping.
- * Neither do the standard versions now, these are just here
- * for older code.
- */
-#define insb(port, buf, ns)     _insb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
-#define insw(port, buf, ns)     _insw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
-#define insl(port, buf, nl)     _insl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
 
-#else
+extern int in_8(const volatile unsigned char __iomem *addr);
+extern void out_8(volatile unsigned char __iomem *addr, int val);
+extern int in_le16(const volatile unsigned short __iomem *addr);
+extern int in_be16(const volatile unsigned short __iomem *addr);
+extern void out_le16(volatile unsigned short __iomem *addr, int val);
+extern void out_be16(volatile unsigned short __iomem *addr, int val);
+extern unsigned in_le32(const volatile unsigned __iomem *addr);
+extern unsigned in_be32(const volatile unsigned __iomem *addr);
+extern void out_le32(volatile unsigned __iomem *addr, int val);
+extern void out_be32(volatile unsigned __iomem *addr, int val);
+extern unsigned long in_le64(const volatile unsigned long __iomem *addr);
+extern unsigned long in_be64(const volatile unsigned long __iomem *addr);
+extern void out_le64(volatile unsigned long __iomem *addr, unsigned long val);
+extern void out_be64(volatile unsigned long __iomem *addr, unsigned long val);
+
+extern unsigned char __raw_readb(const volatile void __iomem *addr);
+extern unsigned short __raw_readw(const volatile void __iomem *addr);
+extern unsigned int __raw_readl(const volatile void __iomem *addr);
+extern unsigned long __raw_readq(const volatile void __iomem *addr);
+extern void __raw_writeb(unsigned char v, volatile void __iomem *addr);
+extern void __raw_writew(unsigned short v, volatile void __iomem *addr);
+extern void __raw_writel(unsigned int v, volatile void __iomem *addr);
+extern void __raw_writeq(unsigned long v, volatile void __iomem *addr);
+
+extern void memset_io(volatile void __iomem *addr, int c, unsigned long n);
+extern void memcpy_fromio(void *dest, const volatile void __iomem *src,
+                                 unsigned long n);
+extern void memcpy_toio(volatile void __iomem *dest, const void *src,
+                                 unsigned long n);
+
+#else /* CONFIG_PPC_ISERIES */
+
+#define in_8(addr)              __in_8((addr))
+#define out_8(addr, val)        __out_8((addr), (val))
+#define in_le16(addr)           __in_le16((addr))
+#define in_be16(addr)           __in_be16((addr))
+#define out_le16(addr, val)     __out_le16((addr), (val))
+#define out_be16(addr, val)     __out_be16((addr), (val))
+#define in_le32(addr)           __in_le32((addr))
+#define in_be32(addr)           __in_be32((addr))
+#define out_le32(addr, val)     __out_le32((addr), (val))
+#define out_be32(addr, val)     __out_be32((addr), (val))
+#define in_le64(addr)           __in_le64((addr))
+#define in_be64(addr)           __in_be64((addr))
+#define out_le64(addr, val)     __out_le64((addr), (val))
+#define out_be64(addr, val)     __out_be64((addr), (val))
 
 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
 {
@@ -105,23 +114,11 @@ static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
 {
         *(volatile unsigned long __force *)addr = v;
 }
-#define readb(addr)             eeh_readb(addr)
-#define readw(addr)             eeh_readw(addr)
-#define readl(addr)             eeh_readl(addr)
-#define readq(addr)             eeh_readq(addr)
-#define writeb(data, addr)      eeh_writeb((data), (addr))
-#define writew(data, addr)      eeh_writew((data), (addr))
-#define writel(data, addr)      eeh_writel((data), (addr))
-#define writeq(data, addr)      eeh_writeq((data), (addr))
 #define memset_io(a,b,c)        eeh_memset_io((a),(b),(c))
 #define memcpy_fromio(a,b,c)    eeh_memcpy_fromio((a),(b),(c))
 #define memcpy_toio(a,b,c)      eeh_memcpy_toio((a),(b),(c))
-#define inb(port)               eeh_inb((unsigned long)port)
-#define outb(val, port)         eeh_outb(val, (unsigned long)port)
-#define inw(port)               eeh_inw((unsigned long)port)
-#define outw(val, port)         eeh_outw(val, (unsigned long)port)
-#define inl(port)               eeh_inl((unsigned long)port)
-#define outl(val, port)         eeh_outl(val, (unsigned long)port)
+
+#endif /* CONFIG_PPC_ISERIES */
 
 /*
  * The insw/outsw/insl/outsl macros don't do byte-swapping.
@@ -132,12 +129,25 @@ static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
 #define insw(port, buf, ns)     eeh_insw_ns((port), (buf), (ns))
 #define insl(port, buf, nl)     eeh_insl_ns((port), (buf), (nl))
 
-#endif
-
 #define outsb(port, buf, ns)  _outsb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
 #define outsw(port, buf, ns)  _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
 #define outsl(port, buf, nl)  _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
 
+#define readb(addr)             eeh_readb(addr)
+#define readw(addr)             eeh_readw(addr)
+#define readl(addr)             eeh_readl(addr)
+#define readq(addr)             eeh_readq(addr)
+#define writeb(data, addr)      eeh_writeb((data), (addr))
+#define writew(data, addr)      eeh_writew((data), (addr))
+#define writel(data, addr)      eeh_writel((data), (addr))
+#define writeq(data, addr)      eeh_writeq((data), (addr))
+#define inb(port)               eeh_inb((unsigned long)port)
+#define outb(val, port)         eeh_outb(val, (unsigned long)port)
+#define inw(port)               eeh_inw((unsigned long)port)
+#define outw(val, port)         eeh_outw(val, (unsigned long)port)
+#define inl(port)               eeh_inl((unsigned long)port)
+#define outl(val, port)         eeh_outl(val, (unsigned long)port)
+
 #define readb_relaxed(addr) readb(addr)
 #define readw_relaxed(addr) readw(addr)
 #define readl_relaxed(addr) readl(addr)
@@ -258,7 +268,7 @@ static inline void iosync(void)
  * and should not be used directly by device drivers.  Use inb/readb
  * instead.
  */
-static inline int in_8(const volatile unsigned char __iomem *addr)
+static inline int __in_8(const volatile unsigned char __iomem *addr)
 {
         int ret;
 
@@ -267,14 +277,14 @@ static inline int in_8(const volatile unsigned char __iomem *addr)
         return ret;
 }
 
-static inline void out_8(volatile unsigned char __iomem *addr, int val)
+static inline void __out_8(volatile unsigned char __iomem *addr, int val)
 {
         __asm__ __volatile__("sync; stb%U0%X0 %1,%0"
                              : "=m" (*addr) : "r" (val));
         get_paca()->io_sync = 1;
 }
 
-static inline int in_le16(const volatile unsigned short __iomem *addr)
+static inline int __in_le16(const volatile unsigned short __iomem *addr)
 {
         int ret;
 
@@ -283,7 +293,7 @@ static inline int in_le16(const volatile unsigned short __iomem *addr)
         return ret;
 }
 
-static inline int in_be16(const volatile unsigned short __iomem *addr)
+static inline int __in_be16(const volatile unsigned short __iomem *addr)
 {
         int ret;
 
@@ -292,21 +302,21 @@ static inline int in_be16(const volatile unsigned short __iomem *addr)
         return ret;
 }
 
-static inline void out_le16(volatile unsigned short __iomem *addr, int val)
+static inline void __out_le16(volatile unsigned short __iomem *addr, int val)
 {
         __asm__ __volatile__("sync; sthbrx %1,0,%2"
                              : "=m" (*addr) : "r" (val), "r" (addr));
         get_paca()->io_sync = 1;
 }
 
-static inline void out_be16(volatile unsigned short __iomem *addr, int val)
+static inline void __out_be16(volatile unsigned short __iomem *addr, int val)
 {
         __asm__ __volatile__("sync; sth%U0%X0 %1,%0"
                              : "=m" (*addr) : "r" (val));
         get_paca()->io_sync = 1;
 }
 
-static inline unsigned in_le32(const volatile unsigned __iomem *addr)
+static inline unsigned __in_le32(const volatile unsigned __iomem *addr)
 {
         unsigned ret;
 
@@ -315,7 +325,7 @@ static inline unsigned in_le32(const volatile unsigned __iomem *addr)
         return ret;
 }
 
-static inline unsigned in_be32(const volatile unsigned __iomem *addr)
+static inline unsigned __in_be32(const volatile unsigned __iomem *addr)
 {
         unsigned ret;
 
@@ -324,21 +334,21 @@ static inline unsigned in_be32(const volatile unsigned __iomem *addr)
         return ret;
 }
 
-static inline void out_le32(volatile unsigned __iomem *addr, int val)
+static inline void __out_le32(volatile unsigned __iomem *addr, int val)
 {
         __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr)
                              : "r" (val), "r" (addr));
         get_paca()->io_sync = 1;
 }
 
-static inline void out_be32(volatile unsigned __iomem *addr, int val)
+static inline void __out_be32(volatile unsigned __iomem *addr, int val)
 {
         __asm__ __volatile__("sync; stw%U0%X0 %1,%0"
                              : "=m" (*addr) : "r" (val));
         get_paca()->io_sync = 1;
 }
 
-static inline unsigned long in_le64(const volatile unsigned long __iomem *addr)
+static inline unsigned long __in_le64(const volatile unsigned long __iomem *addr)
 {
         unsigned long tmp, ret;
 
@@ -358,7 +368,7 @@ static inline unsigned long in_le64(const volatile unsigned long __iomem *addr)
         return ret;
 }
 
-static inline unsigned long in_be64(const volatile unsigned long __iomem *addr)
+static inline unsigned long __in_be64(const volatile unsigned long __iomem *addr)
 {
         unsigned long ret;
 
@@ -367,7 +377,7 @@ static inline unsigned long in_be64(const volatile unsigned long __iomem *addr)
         return ret;
 }
 
-static inline void out_le64(volatile unsigned long __iomem *addr, unsigned long val)
+static inline void __out_le64(volatile unsigned long __iomem *addr, unsigned long val)
 {
         unsigned long tmp;
 
@@ -385,15 +395,13 @@ static inline void out_le64(volatile unsigned long __iomem *addr, unsigned long
         get_paca()->io_sync = 1;
 }
 
-static inline void out_be64(volatile unsigned long __iomem *addr, unsigned long val)
+static inline void __out_be64(volatile unsigned long __iomem *addr, unsigned long val)
 {
         __asm__ __volatile__("sync; std%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
         get_paca()->io_sync = 1;
 }
 
-#ifndef CONFIG_PPC_ISERIES 
 #include <asm/eeh.h>
-#endif
 
 /**
  *      check_signature         -       find BIOS signatures
@@ -409,7 +417,6 @@ static inline int check_signature(const volatile void __iomem * io_addr,
         const unsigned char *signature, int length)
 {
         int retval = 0;
-#ifndef CONFIG_PPC_ISERIES 
         do {
                 if (readb(io_addr) != *signature)
                         goto out;
@@ -419,7 +426,6 @@ static inline int check_signature(const volatile void __iomem * io_addr,
         } while (length);
         retval = 1;
 out:
-#endif
         return retval;
 }
 
diff --git a/include/asm-powerpc/iseries/iseries_io.h b/include/asm-powerpc/iseries/iseries_io.h
deleted file mode 100644
index f29009bd63c9..000000000000
--- a/include/asm-powerpc/iseries/iseries_io.h
+++ /dev/null
@@ -1,60 +0,0 @@
-#ifndef _ASM_POWERPC_ISERIES_ISERIES_IO_H
-#define _ASM_POWERPC_ISERIES_ISERIES_IO_H
-
-
-#ifdef CONFIG_PPC_ISERIES
-#include <linux/types.h>
-/*
- * Created by Allan Trautman on Thu Dec 28 2000.
- *
- * Remaps the io.h for the iSeries Io
- * Copyright (C) 2000  Allan H Trautman, IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the:
- * Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330,
- * Boston, MA  02111-1307  USA
- *
- * Change Activity:
- *   Created December 28, 2000
- * End Change Activity
- */
-
-#ifdef CONFIG_PCI
-extern u8   iSeries_Read_Byte(const volatile void __iomem * IoAddress);
-extern u16  iSeries_Read_Word(const volatile void __iomem * IoAddress);
-extern u32  iSeries_Read_Long(const volatile void __iomem * IoAddress);
-extern void iSeries_Write_Byte(u8  IoData, volatile void __iomem * IoAddress);
-extern void iSeries_Write_Word(u16 IoData, volatile void __iomem * IoAddress);
-extern void iSeries_Write_Long(u32 IoData, volatile void __iomem * IoAddress);
-
-extern void iSeries_memset_io(volatile void __iomem *dest, char x, size_t n);
-extern void iSeries_memcpy_toio(volatile void __iomem *dest, void *source,
-                size_t n);
-extern void iSeries_memcpy_fromio(void *dest,
-                const volatile void __iomem *source, size_t n);
-#else
-static inline u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
-{
-        return 0xff;
-}
-
-static inline void iSeries_Write_Byte(u8 IoData,
-                volatile void __iomem *IoAddress)
-{
-}
-#endif  /* CONFIG_PCI */
-
-#endif /* CONFIG_PPC_ISERIES */
-#endif /* _ASM_POWERPC_ISERIES_ISERIES_IO_H */