Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-fixes-2.6

[linux-2.6] / include / asm-ppc / io.h

diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
index 39caf067a31bd401e22dc2e0114b5224fce28939..2bfdf9c98459e9ee28d98ccb90c3e638f0bc69be 100644 (file)
--- a/include/asm-ppc/io.h
+++ b/include/asm-ppc/io.h
@@ -57,7 +57,7 @@ extern unsigned long pci_dram_offset;
  * is actually performed (i.e. the data has come back) before we start
  * executing any following instructions.
  */
-extern inline int in_8(volatile unsigned char __iomem *addr)
+extern inline int in_8(const volatile unsigned char __iomem *addr)
 {
        int ret;
 
@@ -73,7 +73,7 @@ extern inline void out_8(volatile unsigned char __iomem *addr, int val)
        __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
 }
 
-extern inline int in_le16(volatile unsigned short __iomem *addr)
+extern inline int in_le16(const volatile unsigned short __iomem *addr)
 {
        int ret;
 
@@ -84,7 +84,7 @@ extern inline int in_le16(volatile unsigned short __iomem *addr)
        return ret;
 }
 
-extern inline int in_be16(volatile unsigned short __iomem *addr)
+extern inline int in_be16(const volatile unsigned short __iomem *addr)
 {
        int ret;
 
@@ -105,7 +105,7 @@ extern inline void out_be16(volatile unsigned short __iomem *addr, int val)
        __asm__ __volatile__("sth%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
 }
 
-extern inline unsigned in_le32(volatile unsigned __iomem *addr)
+extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
 {
        unsigned ret;
 
@@ -116,7 +116,7 @@ extern inline unsigned in_le32(volatile unsigned __iomem *addr)
        return ret;
 }
 
-extern inline unsigned in_be32(volatile unsigned __iomem *addr)
+extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
 {
        unsigned ret;
 
@@ -140,7 +140,7 @@ extern inline void out_be32(volatile unsigned __iomem *addr, int val)
 #define readb(addr) in_8((volatile u8 *)(addr))
 #define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
 #else
-static inline __u8 readb(volatile void __iomem *addr)
+static inline __u8 readb(const volatile void __iomem *addr)
 {
        return in_8(addr);
 }
@@ -151,11 +151,11 @@ static inline void writeb(__u8 b, volatile void __iomem *addr)
 #endif
 
 #if defined(CONFIG_APUS)
-static inline __u16 readw(volatile void __iomem *addr)
+static inline __u16 readw(const volatile void __iomem *addr)
 {
        return *(__force volatile __u16 *)(addr);
 }
-static inline __u32 readl(volatile void __iomem *addr)
+static inline __u32 readl(const volatile void __iomem *addr)
 {
        return *(__force volatile __u32 *)(addr);
 }
@@ -174,11 +174,11 @@ static inline void writel(__u32 b, volatile void __iomem *addr)
 #define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
 #define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
 #else
-static inline __u16 readw(volatile void __iomem *addr)
+static inline __u16 readw(const volatile void __iomem *addr)
 {
        return in_le16(addr);
 }
-static inline __u32 readl(volatile void __iomem *addr)
+static inline __u32 readl(const volatile void __iomem *addr)
 {
        return in_le32(addr);
 }
@@ -237,9 +237,9 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
 #define outsl(port, buf, nl)   _outsl_ns((port)+___IO_BASE, (buf), (nl))
 
 /*
- * On powermacs, we will get a machine check exception if we
- * try to read data from a non-existent I/O port.  Because the
- * machine check is an asynchronous exception, it isn't
+ * On powermacs and 8xx we will get a machine check exception 
+ * if we try to read data from a non-existent I/O port. Because
+ * the machine check is an asynchronous exception, it isn't
  * well-defined which instruction SRR0 will point to when the
  * exception occurs.
  * With the sequence below (twi; isync; nop), we have found that
@@ -258,7 +258,7 @@ extern __inline__ unsigned int name(unsigned int port)      \
 {                                                      \
        unsigned int x;                                 \
        __asm__ __volatile__(                           \
-                       op "    %0,0,%1\n"              \
+               "0:"    op "    %0,0,%1\n"              \
                "1:     twi     0,%0,0\n"               \
                "2:     isync\n"                        \
                "3:     nop\n"                          \
@@ -269,6 +269,7 @@ extern __inline__ unsigned int name(unsigned int port)      \
                ".previous\n"                           \
                ".section __ex_table,\"a\"\n"           \
                "       .align  2\n"                    \
+               "       .long   0b,5b\n"                \
                "       .long   1b,5b\n"                \
                "       .long   2b,5b\n"                \
                "       .long   3b,5b\n"                \
@@ -282,11 +283,12 @@ extern __inline__ unsigned int name(unsigned int port)    \
 extern __inline__ void name(unsigned int val, unsigned int port) \
 {                                                      \
        __asm__ __volatile__(                           \
-               op " %0,0,%1\n"                         \
+               "0:" op " %0,0,%1\n"                    \
                "1:     sync\n"                         \
                "2:\n"                                  \
                ".section __ex_table,\"a\"\n"           \
                "       .align  2\n"                    \
+               "       .long   0b,2b\n"                \
                "       .long   1b,2b\n"                \
                ".previous"                             \
                : : "r" (val), "r" (port + ___IO_BASE));        \