blob: 76631128e11cfb467649c02b5bbe4dba488eaf92 [file] [log] [blame]
Russell Kinga09e64f2008-08-05 16:14:15 +01001/*
2 * arch/arm/mach-ns9xxx/include/mach/hardware.h
3 *
4 * Copyright (C) 2006 by Digi International Inc.
5 * All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10 */
11#ifndef __ASM_ARCH_HARDWARE_H
12#define __ASM_ARCH_HARDWARE_H
13
Russell Kinga09e64f2008-08-05 16:14:15 +010014/*
15 * NetSilicon NS9xxx internal mapping:
16 *
17 * physical <--> virtual
18 * 0x90000000 - 0x906fffff <--> 0xf9000000 - 0xf96fffff
19 * 0xa0100000 - 0xa0afffff <--> 0xfa100000 - 0xfaafffff
20 */
21#define io_p2v(x) (0xf0000000 \
22 + (((x) & 0xf0000000) >> 4) \
23 + ((x) & 0x00ffffff))
24
25#define io_v2p(x) ((((x) & 0x0f000000) << 4) \
26 + ((x) & 0x00ffffff))
27
28#define __REGSHIFT(mask) ((mask) & (-(mask)))
29
30#define __REGBIT(bit) ((u32)1 << (bit))
31#define __REGBITS(hbit, lbit) ((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit))
32#define __REGVAL(mask, value) (((value) * __REGSHIFT(mask)) & (mask))
33
34#ifndef __ASSEMBLY__
35
36# define __REG(x) ((void __iomem __force *)io_p2v((x)))
37# define __REG2(x, y) ((void __iomem __force *)(io_p2v((x)) + 4 * (y)))
38
39# define __REGSET(var, field, value) \
40 ((var) = (((var) & ~((field) & ~(value))) | (value)))
41
42# define REGSET(var, reg, field, value) \
43 __REGSET(var, reg ## _ ## field, reg ## _ ## field ## _ ## value)
44
45# define REGSET_IDX(var, reg, field, idx, value) \
46 __REGSET(var, reg ## _ ## field((idx)), reg ## _ ## field ## _ ## value((idx)))
47
48# define REGSETIM(var, reg, field, value) \
49 __REGSET(var, reg ## _ ## field, __REGVAL(reg ## _ ## field, (value)))
50
51# define REGSETIM_IDX(var, reg, field, idx, value) \
52 __REGSET(var, reg ## _ ## field((idx)), __REGVAL(reg ## _ ## field((idx)), (value)))
53
54# define __REGGET(var, field) \
55 (((var) & (field)))
56
57# define REGGET(var, reg, field) \
58 __REGGET(var, reg ## _ ## field)
59
60# define REGGET_IDX(var, reg, field, idx) \
61 __REGGET(var, reg ## _ ## field((idx)))
62
63# define REGGETIM(var, reg, field) \
64 __REGGET(var, reg ## _ ## field) / __REGSHIFT(reg ## _ ## field)
65
66# define REGGETIM_IDX(var, reg, field, idx) \
67 __REGGET(var, reg ## _ ## field((idx))) / \
68 __REGSHIFT(reg ## _ ## field((idx)))
69
70#else
71
72# define __REG(x) io_p2v(x)
73# define __REG2(x, y) io_p2v((x) + 4 * (y))
74
75#endif
76
77#endif /* ifndef __ASM_ARCH_HARDWARE_H */