LXR linux/arch/arm/mach-ns9xxx/include/mach/hardware.h

   1/*
   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
  14/*
  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 */
  78