-/*
- * Sane hardware offers swapping of PCI/ISA I/O space accesses in hardware;
- * less sane hardware forces software to fiddle with this...
- *
- * Regardless, if the host bus endianness mismatches that of PCI/ISA, then
- * you can't have the numerical value of data and byte addresses within
- * multibyte quantities both preserved at the same time. Hence two
- * variations of functions: non-prefixed ones that preserve the value
- * and prefixed ones that preserve byte addresses. The latters are
- * typically used for moving raw data between a peripheral and memory (cf.
- * string I/O functions), hence the "__mem_" prefix.
- */
-#if defined(CONFIG_SWAP_IO_SPACE)
-
-# define ioswabb(x) (x)
-# define __mem_ioswabb(x) (x)
-# ifdef CONFIG_SGI_IP22
-/*
- * IP22 seems braindead enough to swap 16bits values in hardware, but
- * not 32bits. Go figure... Can't tell without documentation.
- */
-# define ioswabw(x) (x)
-# define __mem_ioswabw(x) le16_to_cpu(x)
-# else
-# define ioswabw(x) le16_to_cpu(x)
-# define __mem_ioswabw(x) (x)
-# endif
-# define ioswabl(x) le32_to_cpu(x)
-# define __mem_ioswabl(x) (x)
-# define ioswabq(x) le64_to_cpu(x)
-# define __mem_ioswabq(x) (x)
-
-#else
-
-# define ioswabb(x) (x)
-# define __mem_ioswabb(x) (x)
-# define ioswabw(x) (x)
-# define __mem_ioswabw(x) cpu_to_le16(x)
-# define ioswabl(x) (x)
-# define __mem_ioswabl(x) cpu_to_le32(x)
-# define ioswabq(x) (x)
-# define __mem_ioswabq(x) cpu_to_le32(x)
-
-#endif