include/asm-mips64/mv64340_dep.h

   1 /*
   2  * Copyright 2002 Momentum Computer Inc.
   3  * Author: Matthew Dharm <mdharm@momenco.com>
   4  *
   5  * include/asm-mips/mv64340-dep.h
   6  *     Board-dependent definitions for MV-64340 chip.
   7  *
   8  * This program is free software; you can redistribute  it and/or modify it
   9  * under  the terms of  the GNU General  Public License as published by the
  10  * Free Software Foundation;  either version 2 of the  License, or (at your
  11  * option) any later version.
  12  */
  13
  14 #ifndef __MV64340_DEP_H__
  15 #define __MV64340_DEP_H__
  16
  17 #include <asm/addrspace.h>              /* for KSEG1ADDR() */
  18 #include <asm/byteorder.h>              /* for cpu_to_le32() */
  19
  20 extern unsigned long mv64340_base;
  21
  22 #define MV64340_BASE       (mv64340_base)
  23
  24 /*
  25  * Because of an error/peculiarity in the Galileo chip, we need to swap the
  26  * bytes when running bigendian.
  27  */
  28
  29 #define MV_WRITE(ofs, data)  \
  30         *(volatile u32 *)(MV64340_BASE+(ofs)) = cpu_to_le32(data)
  31 #define MV_READ(ofs, data)   \
  32         *(data) = le32_to_cpu(*(volatile u32 *)(MV64340_BASE+(ofs)))
  33 #define MV_READ_DATA(ofs)    \
  34         le32_to_cpu(*(volatile u32 *)(MV64340_BASE+(ofs)))
  35
  36 #define MV_WRITE_16(ofs, data)  \
  37         *(volatile u16 *)(MV64340_BASE+(ofs)) = cpu_to_le16(data)
  38 #define MV_READ_16(ofs, data)   \
  39         *(data) = le16_to_cpu(*(volatile u16 *)(MV64340_BASE+(ofs)))
  40
  41 #define MV_WRITE_8(ofs, data)  \
  42         *(volatile u8 *)(MV64340_BASE+(ofs)) = data
  43 #define MV_READ_8(ofs, data)   \
  44         *(data) = *(volatile u8 *)(MV64340_BASE+(ofs))
  45
  46 #define MV_SET_REG_BITS(ofs,bits) \
  47         (*((volatile u32 *)(MV64340_BASE+(ofs)))) |= ((u32)cpu_to_le32(bits))
  48 #define MV_RESET_REG_BITS(ofs,bits) \
  49         (*((volatile u32 *)(MV64340_BASE+(ofs)))) &= ~((u32)cpu_to_le32(bits))
  50
  51 #endif