text: #ifndef __ALT_CACHE_H__
  #define __ALT_CACHE_H__
  
  /******************************************************************************
  *                                                                             *
  * License Agreement                                                           *
  *                                                                             *
  * Copyright (c) 2003, 2007 Altera Corporation, San Jose, California, USA.     *
  * All rights reserved.                                                        *
  *                                                                             *
  * Permission is hereby granted, free of charge, to any person obtaining a     *
  * copy of this software and associated documentation files (the "Software"),  *
  * to deal in the Software without restriction, including without limitation   *
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
  * and/or sell copies of the Software, and to permit persons to whom the       *
  * Software is furnished to do so, subject to the following conditions:        *
  *                                                                             *
  * The above copyright notice and this permission notice shall be included in  *
  * all copies or substantial portions of the Software.                         *
  *                                                                             *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
  * DEALINGS IN THE SOFTWARE.                                                   *
  *                                                                             *
  * This agreement shall be governed in all respects by the laws of the State   *
  * of California and by the laws of the United States of America.              *
  *                                                                             *
  ******************************************************************************/
  
  #include <stdlib.h>
  
  #include "alt_types.h"
  
  /*
   * alt_cache.h defines the processor specific functions for manipulating the
   * cache.
   */
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif /* __cplusplus */
  
  /*
   * alt_icache_flush() is called to flush the instruction cache for a memory
   * region of length "len" bytes, starting at address "start".
   */
  
  extern void alt_icache_flush (void* start, alt_u32 len);
  
  /*
   * alt_dcache_flush() is called to flush the data cache for a memory
   * region of length "len" bytes, starting at address "start".
   * Any dirty lines in the data cache are written back to memory.
   */
  
  extern void alt_dcache_flush (void* start, alt_u32 len);
  
  /*
   * alt_dcache_flush() is called to flush the data cache for a memory
   * region of length "len" bytes, starting at address "start".
   * Any dirty lines in the data cache are NOT written back to memory.
   */
  
  extern void alt_dcache_flush_no_writeback (void* start, alt_u32 len);
  
  /*
   * Flush the entire instruction cache.
   */
  
  extern void alt_icache_flush_all (void);
  
  /*
   * Flush the entire data cache.
   */
  
  extern void alt_dcache_flush_all (void);
  
  /*
   * Allocate a block of uncached memory.
   */
  
  extern volatile void* alt_uncached_malloc (size_t size);
  
  /*
   * Free a block of uncached memory.
   */
  
  extern void alt_uncached_free (volatile void* ptr);
  
  /*
   * Convert a pointer to a block of cached memory, into a block of
   * uncached memory.
   */
  
  extern volatile void* alt_remap_uncached (void* ptr, alt_u32 len);
  
  /*
   * Convert a pointer to a block of uncached memory, into a block of
   * cached memory.
   */
  
  extern void* alt_remap_cached (volatile void* ptr, alt_u32 len);
  
  /*
   *
   */
  
  #ifdef __cplusplus
  }
  #endif
    
  #endif /* __ALT_CACHE_H__ */
  