x86-64: Use BUILDIO in io_64.h

Copied from io_32.h.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1265380629-3212-5-git-send-email-brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/x86/include/asm/io_64.h b/arch/x86/include/asm/io_64.h
index 040bf74..4a94aef 100644 (file)
--- a/arch/x86/include/asm/io_64.h
+++ b/arch/x86/include/asm/io_64.h
@@ -104,86 +104,48 @@ static inline void slow_down_io(void)
 
 #endif
 
-/*
- * Talk about misusing macros..
- */
-#define __OUT1(s, x)                                                   \
-static inline void out##s(unsigned x value, unsigned short port) {
-
-#define __OUT2(s, s1, s2)                              \
-asm volatile ("out" #s " %" s1 "0,%" s2 "1"
-
-#ifndef REALLY_SLOW_IO
-#define REALLY_SLOW_IO
-#define UNSET_REALLY_SLOW_IO
-#endif
-
-#define __OUT(s, s1, x)                                                        \
-       __OUT1(s, x) __OUT2(s, s1, "w") : : "a" (value), "Nd" (port));  \
-       }                                                               \
-       __OUT1(s##_p, x) __OUT2(s, s1, "w") : : "a" (value), "Nd" (port)); \
+#define BUILDIO(bwl, bw, type)                                         \
+static inline void out##bwl(unsigned type value, int port)             \
+{                                                                      \
+       asm volatile("out" #bwl " %" #bw "0, %w1"                       \
+                    : : "a"(value), "Nd"(port));                       \
+}                                                                      \
+                                                                       \
+static inline unsigned type in##bwl(int port)                          \
+{                                                                      \
+       unsigned type value;                                            \
+       asm volatile("in" #bwl " %w1, %" #bw "0"                        \
+                    : "=a"(value) : "Nd"(port));                       \
+       return value;                                                   \
+}                                                                      \
+                                                                       \
+static inline void out##bwl##_p(unsigned type value, int port)         \
+{                                                                      \
+       out##bwl(value, port);                                          \
        slow_down_io();                                                 \
-}
-
-#define __IN1(s)                                                       \
-static inline RETURN_TYPE in##s(unsigned short port)                   \
+}                                                                      \
+                                                                       \
+static inline unsigned type in##bwl##_p(int port)                      \
 {                                                                      \
-       RETURN_TYPE _v;
-
-#define __IN2(s, s1, s2)                                               \
-       asm volatile ("in" #s " %" s2 "1,%" s1 "0"
-
-#define __IN(s, s1, i...)                                              \
-       __IN1(s) __IN2(s, s1, "w") : "=a" (_v) : "Nd" (port), ##i);     \
-       return _v;                                                      \
-       }                                                               \
-       __IN1(s##_p) __IN2(s, s1, "w") : "=a" (_v) : "Nd" (port), ##i); \
-       slow_down_io(); \
-       return _v; }
-
-#ifdef UNSET_REALLY_SLOW_IO
-#undef REALLY_SLOW_IO
-#endif
-
-#define __INS(s)                                                       \
-static inline void ins##s(unsigned short port, void *addr,             \
-                         unsigned long count)                          \
+       unsigned type value = in##bwl(port);                            \
+       slow_down_io();                                                 \
+       return value;                                                   \
+}                                                                      \
+                                                                       \
+static inline void outs##bwl(int port, const void *addr, unsigned long count) \
 {                                                                      \
-       asm volatile ("rep ; ins" #s                                    \
-                     : "=D" (addr), "=c" (count)                       \
-                     : "d" (port), "0" (addr), "1" (count));           \
-}
-
-#define __OUTS(s)                                                      \
-static inline void outs##s(unsigned short port, const void *addr,      \
-                          unsigned long count)                         \
+       asm volatile("rep; outs" #bwl                                   \
+                    : "+S"(addr), "+c"(count) : "d"(port));            \
+}                                                                      \
+                                                                       \
+static inline void ins##bwl(int port, void *addr, unsigned long count) \
 {                                                                      \
-       asm volatile ("rep ; outs" #s                                   \
-                     : "=S" (addr), "=c" (count)                       \
-                     : "d" (port), "0" (addr), "1" (count));           \
+       asm volatile("rep; ins" #bwl                                    \
+                    : "+D"(addr), "+c"(count) : "d"(port));            \
 }
 
-#define RETURN_TYPE unsigned char
-__IN(b, "")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned short
-__IN(w, "")
-#undef RETURN_TYPE
-#define RETURN_TYPE unsigned int
-__IN(l, "")
-#undef RETURN_TYPE
-
-__OUT(b, "b", char)
-__OUT(w, "w", short)
-__OUT(l, , int)
-
-__INS(b)
-__INS(w)
-__INS(l)
-
-__OUTS(b)
-__OUTS(w)
-__OUTS(l)
-
+BUILDIO(b, b, char)
+BUILDIO(w, w, short)
+BUILDIO(l, , int)
 
 #endif /* _ASM_X86_IO_64_H */