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 #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 __REGSHIFT(mask)        ((mask) & (-(mask)))
  31
  32 #define __REGBIT(bit)           ((u32)1 << (bit))
  33 #define __REGBITS(hbit, lbit)   ((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit))
  34 #define __REGVAL(mask, value)   (((value) * __REGSHIFT(mask)) & (mask))
  35
  36 #ifndef __ASSEMBLY__
  37
  38 #  define __REG(x)      ((void __iomem __force *)io_p2v((x)))
  39 #  define __REG2(x, y)  ((void __iomem __force *)(io_p2v((x)) + 4 * (y)))
  40
  41 #  define __REGSET(var, field, value)                                   \
  42         ((var) = (((var) & ~((field) & ~(value))) | (value)))
  43
  44 #  define REGSET(var, reg, field, value)                                \
  45         __REGSET(var, reg ## _ ## field, reg ## _ ## field ## _ ## value)
  46
  47 #  define REGSET_IDX(var, reg, field, idx, value)                       \
  48         __REGSET(var, reg ## _ ## field((idx)), reg ## _ ## field ## _ ## value((idx)))
  49
  50 #  define REGSETIM(var, reg, field, value)                              \
  51         __REGSET(var, reg ## _ ## field, __REGVAL(reg ## _ ## field, (value)))
  52
  53 #  define REGSETIM_IDX(var, reg, field, idx, value)                     \
  54         __REGSET(var, reg ## _ ## field((idx)), __REGVAL(reg ## _ ## field((idx)), (value)))
  55
  56 #  define __REGGET(var, field)                                          \
  57         (((var) & (field)))
  58
  59 #  define REGGET(var, reg, field)                                       \
  60          __REGGET(var, reg ## _ ## field)
  61
  62 #  define REGGET_IDX(var, reg, field, idx)                              \
  63          __REGGET(var, reg ## _ ## field((idx)))
  64
  65 #  define REGGETIM(var, reg, field)                                     \
  66          __REGGET(var, reg ## _ ## field) / __REGSHIFT(reg ## _ ## field)
  67
  68 #  define REGGETIM_IDX(var, reg, field, idx)                            \
  69          __REGGET(var, reg ## _ ## field((idx))) /                      \
  70          __REGSHIFT(reg ## _ ## field((idx)))
  71
  72 #else
  73
  74 #  define __REG(x)      io_p2v(x)
  75 #  define __REG2(x, y)  io_p2v((x) + 4 * (y))
  76
  77 #endif
  78
  79 #endif /* ifndef __ASM_ARCH_HARDWARE_H */