1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0 */ 223ff8633SDaniel Schwierzeck /* 323ff8633SDaniel Schwierzeck * Copyright (C) 2003, 2004 Ralf Baechle 423ff8633SDaniel Schwierzeck */ 523ff8633SDaniel Schwierzeck #ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H 623ff8633SDaniel Schwierzeck #define __ASM_MACH_GENERIC_MANGLE_PORT_H 723ff8633SDaniel Schwierzeck 823ff8633SDaniel Schwierzeck #define __swizzle_addr_b(port) (port) 923ff8633SDaniel Schwierzeck #define __swizzle_addr_w(port) (port) 1023ff8633SDaniel Schwierzeck #define __swizzle_addr_l(port) (port) 1123ff8633SDaniel Schwierzeck #define __swizzle_addr_q(port) (port) 1223ff8633SDaniel Schwierzeck 1323ff8633SDaniel Schwierzeck /* 1423ff8633SDaniel Schwierzeck * Sane hardware offers swapping of PCI/ISA I/O space accesses in hardware; 1523ff8633SDaniel Schwierzeck * less sane hardware forces software to fiddle with this... 1623ff8633SDaniel Schwierzeck * 1723ff8633SDaniel Schwierzeck * Regardless, if the host bus endianness mismatches that of PCI/ISA, then 1823ff8633SDaniel Schwierzeck * you can't have the numerical value of data and byte addresses within 1923ff8633SDaniel Schwierzeck * multibyte quantities both preserved at the same time. Hence two 2023ff8633SDaniel Schwierzeck * variations of functions: non-prefixed ones that preserve the value 2123ff8633SDaniel Schwierzeck * and prefixed ones that preserve byte addresses. The latters are 2223ff8633SDaniel Schwierzeck * typically used for moving raw data between a peripheral and memory (cf. 2323ff8633SDaniel Schwierzeck * string I/O functions), hence the "__mem_" prefix. 2423ff8633SDaniel Schwierzeck */ 2523ff8633SDaniel Schwierzeck #if defined(CONFIG_SWAP_IO_SPACE) 2623ff8633SDaniel Schwierzeck 2723ff8633SDaniel Schwierzeck # define ioswabb(a, x) (x) 2823ff8633SDaniel Schwierzeck # define __mem_ioswabb(a, x) (x) 2923ff8633SDaniel Schwierzeck # define ioswabw(a, x) le16_to_cpu(x) 3023ff8633SDaniel Schwierzeck # define __mem_ioswabw(a, x) (x) 3123ff8633SDaniel Schwierzeck # define ioswabl(a, x) le32_to_cpu(x) 3223ff8633SDaniel Schwierzeck # define __mem_ioswabl(a, x) (x) 3323ff8633SDaniel Schwierzeck # define ioswabq(a, x) le64_to_cpu(x) 3423ff8633SDaniel Schwierzeck # define __mem_ioswabq(a, x) (x) 3523ff8633SDaniel Schwierzeck 3623ff8633SDaniel Schwierzeck #else 3723ff8633SDaniel Schwierzeck 3823ff8633SDaniel Schwierzeck # define ioswabb(a, x) (x) 3923ff8633SDaniel Schwierzeck # define __mem_ioswabb(a, x) (x) 4023ff8633SDaniel Schwierzeck # define ioswabw(a, x) (x) 4123ff8633SDaniel Schwierzeck # define __mem_ioswabw(a, x) cpu_to_le16(x) 4223ff8633SDaniel Schwierzeck # define ioswabl(a, x) (x) 4323ff8633SDaniel Schwierzeck # define __mem_ioswabl(a, x) cpu_to_le32(x) 4423ff8633SDaniel Schwierzeck # define ioswabq(a, x) (x) 4523ff8633SDaniel Schwierzeck # define __mem_ioswabq(a, x) cpu_to_le32(x) 4623ff8633SDaniel Schwierzeck 4723ff8633SDaniel Schwierzeck #endif 4823ff8633SDaniel Schwierzeck 4923ff8633SDaniel Schwierzeck #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */ 50