revert changes to io access functions done in madwifi trunk (they seem wrong to me, and they break xscale) fixes #2591

SVN-Revision: 9433

package/madwifi/patches/128-revert_ioaccess.patch

@@ -0,0 +1,59 @@
+Index: madwifi-ng-r2756-20071018/ath_hal/ah_os.h
+===================================================================
+--- madwifi-ng-r2756-20071018.orig/ath_hal/ah_os.h	2007-10-24 19:56:29.632449329 +0200
++++ madwifi-ng-r2756-20071018/ath_hal/ah_os.h	2007-10-24 19:56:39.192994154 +0200
+@@ -172,44 +172,25 @@
+  * never byte-swapped by PCI chipsets or bridges, but always 
+  * written directly (i.e. the format defined by the manufacturer).
+  */
+-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+-# if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
++#if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
+ #define _OS_REG_WRITE(_ah, _reg, _val) do {			\
+ 	(0x4000 <= (_reg) && (_reg) < 0x5000) ?			\
+-	 iowrite32((_val), (_ah)->ah_sh + (_reg)) :		\
+-	 iowrite32be((_val), (_ah)->ah_sh + (_reg));		\
+-	} while (0)
+-#define _OS_REG_READ(_ah, _reg)					\
+-	((0x4000 <= (_reg) && (_reg) < 0x5000) ?		\
+-	 ioread32((_ah)->ah_sh + (_reg)) :			\
+-	 ioread32be((_ah)->ah_sh + (_reg)));
+-# else /* AH_LITTLE_ENDIAN */
+-#define _OS_REG_WRITE(_ah, _reg, _val) do {			\
+-	iowrite32(_val, (_ah)->ah_sh + (_reg));			\
+-	} while (0)
+-#define _OS_REG_READ(_ah, _reg)					\
+-	ioread32((_ah)->ah_sh + (_reg))
+-	
+-# endif /* AH_BYTE_ORDER */
+-#else
+-# if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
+-#define _OS_REG_WRITE(_ah, _reg, _val) do {			\
+-	 writel((0x4000 <= (_reg) && (_reg) < 0x5000) ? 	\
+-	 	(_val) : cpu_to_le32(_val), 			\
+-		(_ah)->ah_sh + (_reg));				\
+-	} while (0)
++	 writel((_val), (_ah)->ah_sh + (_reg)) :		\
++	 ({__raw_writel((_val), (_ah)->ah_sh + (_reg)); 	\
++	   mb(); });						\
++} while (0)
+ #define _OS_REG_READ(_ah, _reg)					\
+ 	((0x4000 <= (_reg) && (_reg) < 0x5000) ?		\
+ 	 readl((_ah)->ah_sh + (_reg)) :				\
+-	 cpu_to_le32(readl((_ah)->ah_sh + (_reg))))
+-# else /* AH_LITTLE_ENDIAN */
++	 ({unsigned long __v = __raw_readl((_ah)->ah_sh + 	\
++	  (_reg)); mb(); __v; }))
++#else /* AH_LITTLE_ENDIAN */
+ #define _OS_REG_WRITE(_ah, _reg, _val) do {			\
+ 	writel(_val, (_ah)->ah_sh + (_reg));			\
+-	} while (0)
++} while (0)
+ #define _OS_REG_READ(_ah, _reg)					\
+ 	readl((_ah)->ah_sh + (_reg))
+-# endif /* AH_BYTE_ORDER */
+-#endif /* KERNEL_VERSON(2,6,12) */
++#endif /* AH_BYTE_ORDER */
+ 
+ /* 
+ The functions in this section are not intended to be invoked by MadWifi driver