| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * 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 */ |
