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 */