/* SPDX-License-Identifier: GPL-2.0 * * SH version cribbed from the MIPS copy: * * Copyright (C) 2003, 2004 Ralf Baechle */ #ifndef __MACH_COMMON_MANGLE_PORT_H #define __MACH_COMMON_MANGLE_PORT_H /* * 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) # define ioswabw(x) le16_to_cpu(x) # define __mem_ioswabw(x) (x) # 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 #endif /* __MACH_COMMON_MANGLE_PORT_H */