From: Zachary Amsden <zach@vmware.com>
Move I/O instructions into the sub-arch layer where they can be overridden.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
include/asm-i386/io.h | 9 +++++----
include/asm-i386/mach-default/mach_io.h | 16 ++++++++++++++++
2 files changed, 21 insertions(+), 4 deletions(-)
diff -puN include/asm-i386/io.h~i386-transparent-paravirtualization-sub-arch-move-sensitive-i-o-instructions-into-the-sub-arch-layer include/asm-i386/io.h
--- devel/include/asm-i386/io.h~i386-transparent-paravirtualization-sub-arch-move-sensitive-i-o-instructions-into-the-sub-arch-layer 2005-08-06 15:01:37.000000000 -0700
+++ devel-akpm/include/asm-i386/io.h 2005-08-06 15:01:37.000000000 -0700
@@ -4,6 +4,7 @@
#include <linux/config.h>
#include <linux/string.h>
#include <linux/compiler.h>
+#include <mach_io.h>
/*
* This file contains the definitions for the x86 IO instructions
@@ -341,11 +342,11 @@ static inline unsigned type in##bwl(int
#define BUILDIO(bwl,bw,type) \
static inline void out##bwl##_local(unsigned type value, int port) { \
- __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port)); \
+ __BUILDOUTINST(bwl,bw,value,port); \
} \
static inline unsigned type in##bwl##_local(int port) { \
unsigned type value; \
- __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port)); \
+ __BUILDININST(bwl,bw,value,port); \
return value; \
} \
static inline void out##bwl##_local_p(unsigned type value, int port) { \
@@ -368,10 +369,10 @@ static inline unsigned type in##bwl##_p(
return value; \
} \
static inline void outs##bwl(int port, const void *addr, unsigned long count) { \
- __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port)); \
+ __BUILDOUTSINST(bwl,addr,count,port); \
} \
static inline void ins##bwl(int port, void *addr, unsigned long count) { \
- __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port)); \
+ __BUILDINSINST(bwl,addr,count,port); \
}
BUILDIO(b,b,char)
diff -puN include/asm-i386/mach-default/mach_io.h~i386-transparent-paravirtualization-sub-arch-move-sensitive-i-o-instructions-into-the-sub-arch-layer include/asm-i386/mach-default/mach_io.h
--- devel/include/asm-i386/mach-default/mach_io.h~i386-transparent-paravirtualization-sub-arch-move-sensitive-i-o-instructions-into-the-sub-arch-layer 2005-08-06 15:01:37.000000000 -0700
+++ devel-akpm/include/asm-i386/mach-default/mach_io.h 2005-08-06 15:01:37.000000000 -0700
@@ -0,0 +1,16 @@
+#ifndef _MACH_ASM_IO_H
+#define _MACH_ASM_IO_H
+
+#define __BUILDOUTINST(bwl,bw,value,port) \
+ __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port))
+#define __BUILDININST(bwl,bw,value,port) \
+ __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port))
+#define __BUILDOUTSINST(bwl,addr,count,port) \
+ __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port))
+#define __BUILDINSINST(bwl,addr,count,port) \
+ __asm__ __volatile__("rep; ins" #bwl \
+ : "+D"(addr), "+c"(count) \
+ : "d"(port) \
+ : "memory")
+
+#endif
_