From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/mips/include/asm/mach-generic/mangle-port.h | 52 ++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 arch/mips/include/asm/mach-generic/mangle-port.h (limited to 'arch/mips/include/asm/mach-generic/mangle-port.h') diff --git a/arch/mips/include/asm/mach-generic/mangle-port.h b/arch/mips/include/asm/mach-generic/mangle-port.h new file mode 100644 index 000000000..77c65c294 --- /dev/null +++ b/arch/mips/include/asm/mach-generic/mangle-port.h @@ -0,0 +1,52 @@ +/* + * 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((__force __le16)(x)) +# define __mem_ioswabw(a, x) (x) +# define ioswabl(a, x) le32_to_cpu((__force __le32)(x)) +# define __mem_ioswabl(a, x) (x) +# define ioswabq(a, x) le64_to_cpu((__force __le64)(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) ((__force u16)cpu_to_le16(x)) +# define ioswabl(a, x) (x) +# define __mem_ioswabl(a, x) ((__force u32)cpu_to_le32(x)) +# define ioswabq(a, x) (x) +# define __mem_ioswabq(a, x) ((__force u64)cpu_to_le64(x)) + +#endif + +#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */ -- cgit v1.2.3