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-rw-r--r--include/asm-arm/arch-ns9xxx/hardware.h67
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diff --git a/include/asm-arm/arch-ns9xxx/hardware.h b/include/asm-arm/arch-ns9xxx/hardware.h
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1/*
2 * include/asm-arm/arch-ns9xxx/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
14#include <asm/memory.h>
15
16/*
17 * NetSilicon NS9xxx internal mapping:
18 *
19 * physical <--> virtual
20 * 0x90000000 - 0x906fffff <--> 0xf9000000 - 0xf96fffff
21 * 0xa0100000 - 0xa0afffff <--> 0xfa100000 - 0xfaafffff
22 */
23#define io_p2v(x) (0xf0000000 \
24 + (((x) & 0xf0000000) >> 4) \
25 + ((x) & 0x00ffffff))
26
27#define io_v2p(x) ((((x) & 0x0f000000) << 4) \
28 + ((x) & 0x00ffffff))
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) * ((mask) & (-(mask))) & (mask)))
33
34#ifndef __ASSEMBLY__
35
36# define __REG(x) (*((volatile u32 *)io_p2v((x))))
37# define __REG2(x, y) (*((volatile u32 *)io_p2v((x)) + (y)))
38
39# define __REGB(x) (*((volatile u8 *)io_p2v((x))))
40# define __REGB2(x) (*((volatile u8 *)io_p2v((x)) + (y)))
41
42# define REGSET(var, reg, field, value) \
43 ((var) = (((var) \
44 & ~(reg ## _ ## field & \
45 ~ reg ## _ ## field ## _ ## value)) \
46 | (reg ## _ ## field ## _ ## value)))
47
48# define REGSETIM(var, reg, field, value) \
49 ((var) = (((var) \
50 & ~(reg ## _ ## field & \
51 ~(__REGVAL(reg ## _ ## field, value)))) \
52 | (__REGVAL(reg ## _ ## field, value))))
53
54# define REGGET(reg, field) \
55 ((reg & (reg ## _ ## field)) / (field & (-field)))
56
57#else
58
59# define __REG(x) io_p2v(x)
60# define __REG2(x, y) io_p2v((x) + (y))
61
62# define __REGB(x) __REG((x))
63# define __REGB2(x, y) __REG2((x), (y))
64
65#endif
66
67#endif /* ifndef __ASM_ARCH_HARDWARE_H */