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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003, 2004 Ralf Baechle
- */
- #ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
- #define __ASM_MACH_GENERIC_MANGLE_PORT_H
- #define __swizzle_addr_b(port) (port)
- #define __swizzle_addr_w(port) (port)
- #define __swizzle_addr_l(port) (port)
- #define __swizzle_addr_q(port) (port)
- /*
- * 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(a, x) (x)
- # define __mem_ioswabb(a, x) (x)
- # define ioswabw(a, x) le16_to_cpu(x)
- # define __mem_ioswabw(a, x) (x)
- # define ioswabl(a, x) le32_to_cpu(x)
- # define __mem_ioswabl(a, x) (x)
- # define ioswabq(a, x) le64_to_cpu(x)
- # define __mem_ioswabq(a, x) (x)
- #else
- # define ioswabb(a, x) (x)
- # define __mem_ioswabb(a, x) (x)
- # define ioswabw(a, x) (x)
- # define __mem_ioswabw(a, x) cpu_to_le16(x)
- # define ioswabl(a, x) (x)
- # define __mem_ioswabl(a, x) cpu_to_le32(x)
- # define ioswabq(a, x) (x)
- # define __mem_ioswabq(a, x) cpu_to_le32(x)
- #endif
- #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */
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