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[/] [ao486/] [trunk/] [syn/] [components/] [vga/] [software/] [exe_bsp/] [HAL/] [src/] [alt_uncached_malloc.c] - Blame information for rev 2

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1 2 alfik
/******************************************************************************
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*                                                                             *
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* License Agreement                                                           *
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*                                                                             *
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* Copyright (c) 2003,2007 Altera Corporation, San Jose, California, USA.      *
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* All rights reserved.                                                        *
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*                                                                             *
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* Permission is hereby granted, free of charge, to any person obtaining a     *
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* copy of this software and associated documentation files (the "Software"),  *
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* to deal in the Software without restriction, including without limitation   *
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,    *
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* and/or sell copies of the Software, and to permit persons to whom the       *
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* Software is furnished to do so, subject to the following conditions:        *
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*                                                                             *
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* The above copyright notice and this permission notice shall be included in  *
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* all copies or substantial portions of the Software.                         *
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*                                                                             *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  *
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,    *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING     *
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER         *
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* DEALINGS IN THE SOFTWARE.                                                   *
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*                                                                             *
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* This agreement shall be governed in all respects by the laws of the State   *
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* of California and by the laws of the United States of America.              *
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*                                                                             *
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******************************************************************************/
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#include "sys/alt_cache.h"
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#include "system.h"
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#ifdef NIOS2_MMU_PRESENT
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/* Convert KERNEL region address to IO region address */
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#define BYPASS_DCACHE_MASK   (0x1 << 29)
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#else
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/* Set bit 31 of address to bypass D-cache */
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#define BYPASS_DCACHE_MASK   (0x1 << 31)
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#endif
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/*
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 * Allocate a block of uncached memory.
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 */
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volatile void* alt_uncached_malloc (size_t size)
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{
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  void* ptr;
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  ptr = malloc (size);
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  alt_dcache_flush (ptr, size);
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  return ptr ? (volatile void*) (((alt_u32) ptr) | BYPASS_DCACHE_MASK) : NULL;
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}

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