Subversion Repositories openrisc

#ifndef CYGONCE_USBS_AT91_BITOPS_H
#define CYGONCE_USBS_AT91_BITOPS_H
 
//==========================================================================
//
//      bitops.h
//
//      Hardware Bit manipulation macros for the AT91 USB device
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
// Software Foundation; either version 2 or (at your option) any later      
// version.                                                                 
//
// eCos is distributed in the hope that it will be useful, but WITHOUT      
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
// You should have received a copy of the GNU General Public License        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    Oliver Munz
// Contributors: bartv
// Date:         2006-02-22
//
//####DESCRIPTIONEND####
//==========================================================================
 
// Set the given bits in a device register
#define SET_BITS(_register_, _bits_)          \
    CYG_MACRO_START                           \
    cyg_uint32 _value_;                       \
    HAL_READ_UINT32(_register_, _value_);     \
    _value_ |= _bits_;                        \
    HAL_WRITE_UINT32(_register_, _value_);    \
    CYG_MACRO_END
 
// Clear the given bits in a device register
#define CLEAR_BITS(_register_, _bits_)        \
    CYG_MACRO_START                           \
    cyg_uint32 _value_;                       \
    HAL_READ_UINT32(_register_, _value_);     \
    _value_ &= ~_bits_;                       \
    HAL_WRITE_UINT32(_register_, _value_);    \
    CYG_MACRO_END
 
#define BITS_ARE_SET(_register_, _bits)       \
    bits_are_set(_register_, _bits)
 
#define BITS_ARE_CLEARED(_register_, _bits)   \
    bits_are_cleared(_register_, _bits)
 
static inline cyg_bool
bits_are_set (cyg_addrword_t addr, cyg_uint32 bits)
{
  cyg_uint32 read;
 
  HAL_READ_UINT32 (addr, read);
 
  return (read & bits) == bits;
}
 
static inline cyg_bool
bits_are_cleared (cyg_addrword_t addr, cyg_uint32 bits)
{
  cyg_uint32 read;
 
  HAL_READ_UINT32 (addr, read);
 
  return (read | ~bits) == ~bits;
}
 
 
#endif // CYGONCE_USBS_AT91_BITOPS_H