drm/rockchip: vop2: Fix the windows switch between different layers
[drm/drm-misc.git] / arch / mips / include / asm / mach-generic / mangle-port.h
blob77c65c294db6a63925f64cb8f7ccc14fdd3ce57e
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
6 * Copyright (C) 2003, 2004 Ralf Baechle
7 */
8 #ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
9 #define __ASM_MACH_GENERIC_MANGLE_PORT_H
11 #define __swizzle_addr_b(port) (port)
12 #define __swizzle_addr_w(port) (port)
13 #define __swizzle_addr_l(port) (port)
14 #define __swizzle_addr_q(port) (port)
17 * Sane hardware offers swapping of PCI/ISA I/O space accesses in hardware;
18 * less sane hardware forces software to fiddle with this...
20 * Regardless, if the host bus endianness mismatches that of PCI/ISA, then
21 * you can't have the numerical value of data and byte addresses within
22 * multibyte quantities both preserved at the same time. Hence two
23 * variations of functions: non-prefixed ones that preserve the value
24 * and prefixed ones that preserve byte addresses. The latters are
25 * typically used for moving raw data between a peripheral and memory (cf.
26 * string I/O functions), hence the "__mem_" prefix.
28 #if defined(CONFIG_SWAP_IO_SPACE)
30 # define ioswabb(a, x) (x)
31 # define __mem_ioswabb(a, x) (x)
32 # define ioswabw(a, x) le16_to_cpu((__force __le16)(x))
33 # define __mem_ioswabw(a, x) (x)
34 # define ioswabl(a, x) le32_to_cpu((__force __le32)(x))
35 # define __mem_ioswabl(a, x) (x)
36 # define ioswabq(a, x) le64_to_cpu((__force __le64)(x))
37 # define __mem_ioswabq(a, x) (x)
39 #else
41 # define ioswabb(a, x) (x)
42 # define __mem_ioswabb(a, x) (x)
43 # define ioswabw(a, x) (x)
44 # define __mem_ioswabw(a, x) ((__force u16)cpu_to_le16(x))
45 # define ioswabl(a, x) (x)
46 # define __mem_ioswabl(a, x) ((__force u32)cpu_to_le32(x))
47 # define ioswabq(a, x) (x)
48 # define __mem_ioswabq(a, x) ((__force u64)cpu_to_le64(x))
50 #endif
52 #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */